Why is Drake Machine Tool Better?

07, Jul. 2025

 

FAQ About Drake Machine Tool Accessories

As a leading manufacturer in precision tool components, Drake offers a comprehensive range of products including chucks, turrets, CNC tool holders, rotary cylinders, tool magazines, indexing plates, optical machines, vises, CNC lathes, collet chucks, and angle heads. Our accessories are engineered to deliver superior performance, durability, and precision for various industrial machining applications. Whether you need high clamping force, rapid tool changes, or customizable solutions, Drake ensures seamless integration with your CNC equipment. Explore common questions answered by our experts to help you make informed purchasing and operational decisions.

With competitive price and timely delivery, DRAKE sincerely hope to be your supplier and partner.

About Chucks

At Drake, we offer a full range of high-performance chucks engineered to deliver precision, stability, and durability in demanding machining environments. Our product line includes hydraulic chucks, pneumatic chucks, and manual chucks, all designed for secure clamping and optimal torque transmission. Whether you need hollow or solid types, 3-jaw or custom clamping solutions, Drake chucks are compatible with CNC lathes, turning centers, and special-purpose machines. Built with hardened steel and advanced surface treatments, our chucks ensure long service life and high concentricity. Backed by efficient delivery, global service support, and customizable options, Drake chucks are trusted by manufacturers worldwide to enhance productivity and machining accuracy.

Q: How to choose a chuck?

A: Chucks are divided into: hydraulic chucks, pneumatic chucks and manual chucks.

Q: How many inches of chucks do I need to use?

A: What is the size of your workpiece? What machine is it used on? Is it hollow or solid? How many claws are needed?

Q: Hw do I know whether it is a hollow or solid chuck?

A: It depends on whether your workpiece passes through the chuck.

Q: How do you install your chucks?

A: Our chuck installation method is the same as that of Korea, Japan, and Taiwan.

Q: What is the delivery and warranty period?

A: 4-24 inch chucks are in stock and shipped as normal. The warranty period is 12 months.

Q: Can the accessories of chuck products be sold separately?

A: Can be sold separately.

About Turret

Drake’s high-performance CNC turrets are engineered to meet the rigorous demands of modern turning applications, offering reliable indexing, high-speed rotation, and precise positioning. Our turret series includes servo-driven, hydraulic, and electric models with configurations from 4 to 12 stations, suitable for horizontal and vertical lathes. Designed for fast tool change and high repeatability, Drake turrets help manufacturers reduce cycle time and boost machining efficiency. Each unit is constructed with premium alloy steel, precision-ground components, and advanced sealing systems to ensure durability and minimal maintenance. Whether you're integrating into automated production lines or upgrading existing machines, Drake provides flexible solutions with compatible tool holders, motors, and customized mounting options. Trusted by customers worldwide, our turrets are backed by fast delivery, a 12-month warranty, and technical support tailored to your machine model and production goals.

Are the knife holder accessories sold separately?

The sending plate and knife holder can be sold separately.

What station number is your turret?

We have the 4, 6, 8, 10, and 12 station numbers.

Is your turret electric or servo driven?

Both servo motors and electric motors are available. Which one do you specifically need?

What is the center height of your turret?

Different types of knife holders have different center heights. Please refer to our catalog for selection, or tell us what center height you need.

Are your turret equipped with corresponding knife holders?

It depends on the specific type of turret you have chosen. Generally, the turret we sell is equipped with corresponding accessories.

Is your turret horizontal or vertical?

We have both vertical and horizontal turret.

How to choose a turret?

The turret is divided into: power living turret, servo hydraulic turret, electric turret.

What size tool holder do I need?

The center height of our tool holder is 63, 80, 100, 125 mm. What center height do you need?

How to know the center height of the tool holder?

Center height: the height from the bottom of the tool holder to the tip of the tool.

How many positions can you choose from on your tool holder?

Our tool holder has 4, 6, 8, 10, and 12 stations.

Are the turret accessories sold separately?

The sensor, tool holder, and motor can be sold separately.

What is the delivery and warranty period?

Servo hydraulic turret and electric turret are in stock. The power living turret needs to be customized according to your needs. The warranty period is 12 months.

Does the knife holder come with a fixed knife holder that can be used with it?

Please confirm with us based on the specific model of the tool holder.

The number and specific model of fixed tool holders provided with the tool holder

Please confirm with us based on the specific model of the tool holder.

Can the knife holder provided with the knife holder be replaced? For example, can the knife holder with two round squares be replaced with a three round one?

Please confirm with us for the specific replacement content.

About CNC Tool Holders

Drake CNC tool holders are engineered for precision, rigidity, and versatility across a wide range of turning and milling applications. Built from high-strength alloy steel and machined with strict tolerances, our tool holders deliver excellent stability and repeatability, even under high-speed or heavy-duty cutting conditions. We offer a complete lineup including axial and radial live tool holders, fixed tool holders, boring tool holders, and ER collet holders, compatible with major turret interfaces such as BMT40, BMT55, BMT65, and more. Each unit is available with internal or external coolant systems and locking options to suit diverse machining needs. Whether for high-volume production or custom solutions, Drake provides tool holders that ensure optimal cutting performance, tool life extension, and compatibility with your CNC systems. Supported by in-stock availability, custom manufacturing, and a 2-year warranty, Drake CNC tool holders are trusted by global OEMs and job shops for reliable, high-precision machining.

What is the locking method of the tool holder?

Internal and External Locking.

What are the advantages of an internal locking?

The advantage of internal locking is more stable tool clamping and higher precision.

What is the material of the tool holder?

The main body is made of forged steel in one piece.

Do you have radial and axial tool holders?

0 degree and 90 degree driven tool holder.

How to install the tool holder correctly?

Fix the tool holder according to the installation requirements of the machine tool using appropriate bolts or fixtures, ensuring that the coaxiality and perpendicularity of the tool holder with the machine tool spindle or turret components meet the requirements. During the installation process, tighten the bolts to the specified torque.

How to ensure the compatibility between the tool holder and the machine tool?

Carefully check the technical parameters of the machine and the specification manual of the tool holder, understand the type, size, and positioning method of the tool turret or spindle interface of the machine tool, and ensure that the interface of the tool holder is completely matched with the machine tool. At the same time, the installation size and space requirements of the knife holder should also be considered.

How to choose the tool holder?

The tool holder is divided into: 0+90 degree power tool holder, fixed tool holder.

What are the different types of tool holders?

Our tool holders include BMT40, BMT45, BMT55, BMT65, BMT75, and BMT85.

How is the tool holder cooled?

Our tool holders have two cooling methods, external cooling and internal cooling.

How is the tool holder locked?

Our tool holders have two locking methods, external locking and internal locking.

Is the size of your tool holder different from the size I am using now?

Which machine model is your tool holder used on?

What is the delivery and warranty period?

Standard 0+90 degree and fixed tool holders are available in stock with a 2-year warranty.

Can the ER chuck of the power tool holder be replaced?

No, the chuck of the power tool holder is fixed and cannot be replaced.

What type of tool holder can be used with different drill bits?

Boring tool holder.

How to use the boring tool holder with different drill bits?

Can be used with a reducer and an extension rod. If you want to use an ER32 chuck, you can use a D40-32 reducer and a 32 handle.

Is there only one color for the tool holder?

No, some models have yellow and black colors.

Can it be customized?

Yes, please send us the drawing for confirmation. Contact now.

About Rotary Cylinder

Drake rotary cylinders are designed to provide reliable and precise rotary motion for CNC lathes and automated clamping systems. Engineered with high-quality carbon steel barrels and quenched 40Cr alloy steel piston rods, our rotary cylinders deliver excellent wear resistance, corrosion protection, and long service life. Available in both hollow and solid shaft configurations, they support a wide range of spindle sizes and are compatible with various chuck types. Each cylinder undergoes strict quality control and surface treatments, such as precision honing and chrome plating, to ensure smooth operation under high-speed, high-pressure conditions. With optional sizes ranging from 4 to 15 inches, Drake rotary cylinders are ideal for high-efficiency machining environments requiring fast and stable clamping. In-stock models are available for immediate shipment, and custom solutions can be developed based on your machine type and workholding needs. Backed by a 12-month warranty and professional technical support, Drake rotary cylinders help manufacturers improve safety, efficiency, and machine uptime.

Q: What materials are used for the cylinder barrel and piston rod respectively? What processing techniques have been used?

A: The cylinder barrel is made of high-quality carbon steel, which has undergone quenching and tempering treatment and precision honing. The piston rod is made of 40Cr alloy steel, which has undergone quenching and chrome plating treatment, making it wear-resistant and corrosion-resistant.

Q: How is the sealing performance?

A: It has good sealing and oil resistance, no leakage risk under rated pressure, and a long service life.

Q: Do you have bulk purchase discounts?

A: Discounts can be given for bulk purchases based on the order quantity, and specific details can be negotiated.

Q: Has the product passed the relevant quality certification?

A: Our products have obtained ISO quality management system certification, CE certification, etc. to ensure that the product quality meets international standards.

Q: What are the available installation methods?

A: Supports various installation methods such as flange type and base type, adapting to different mechanical equipment requirements.

Q: How to choose a cylinder?

A: Cylinders are divided into: 1. Hydraulic cylinders and pneumatic cylinders; 2. Solid cylinders and hollow cylinders.

Q: How do you know whether you want a hollow or solid cylinder?

A: 1. Is your chuck hollow or solid? 2. Do you need to see if your workpiece passes through the cylinder?

Q: What is the delivery and warranty period?

A: 4-15 inch cylinder are in stock and shipped as normal. The warranty period is 12 months.

About Tool Magazine

Drake tool magazines are built for fast, reliable tool change in CNC machining centers. Available in carousel (umbrella-type) and chain-type designs, our magazines support 8 to 20 stations and integrate seamlessly with automatic tool changers. Designed for durability, precision, and efficient operation, they improve production speed while minimizing downtime. Custom configurations available upon request.

Q: What station number is your tool magazine?

A: Generally, we have 8 workstations, 10 workstations, 12 workstations, 16 workstations, and 20 workstations.

Q: Does your tool magazine include a bracket?

A: The bracket needs to be purchased separately and customized after the customer provides the model and plans it.

Q: Is the tool changing device of the hat type tool magazine manual or pneumatic?

A: Pneumatic.

Q: What are the notices for installing tools in the tool magazine?

A: When installing tools, ensure that the handle matches the tool holder clamp of the tool magazine, and the installation accuracy meets the requirements. Insert the tool accurately into the chuck and clamp it with the corresponding clamping device.

Q: What is the tool changing time for the tool magazine? Can it achieve quick tool change?

A: The single tool changing time of the tool magazine is about 3TC, and it adopts technologies such as dual robotic arms and high-speed transmission mechanism to achieve efficient and fast tool changing.

Q: Does the price include installation and debugging costs?

A: The quotation does not include free installation and debugging services. We provide online technical guidance to ensure the normal operation of the equipment. Contact now.

About Indexing Plate

Drake’s indexing plates are precision-engineered for accurate angular positioning in machining and inspection applications. Available in mechanical, optical, and CNC types, our indexing plates ensure high repeatability and robust performance across gear cutting, keyway milling, and circular machining tasks. Built with durable materials and high-precision components, they offer excellent torque resistance and smooth indexing. Custom sizes and configurations are available to meet your specific equipment needs.

Q: How is the indexing plate used to achieve division?

A: The indexing disc usually uses mechanisms such as gears, worm gears, and the indexing disc body to achieve indexing.

Q: What type of indexing plate do you have?

A: We have mechanical indexing plates, optical indexing plates, and CNC indexing plates.

Q: Can your indexing plate be used for gear machining or keyways?

A: Of course, our indexing plate is suitable for various workpieces that require angular indexing processing, including circular, polygonal, and parts with circular indexing requirements.

Q: Does the rotational speed of the indexing plate affect the division?

A: The rotational speed of the indexing disc has a certain impact on the indexing. Within a certain range, increasing the rotational speed appropriately can improve production efficiency, but if the rotational speed is too high, it may lead to a decrease in indexing accuracy.

Q: What are the advantages of mechanical indexing plate?

A: 1. Strong anti-interference ability   2. Good durability   3. Instant division   4. Good compatibility with traditional devices

About Optical Machine

Drake’s optical machines are precision-machined base structures designed for CNC machining centers, VMCs, and gantry-type machines. Available in both linear rail and box-way configurations, our optical machines ensure excellent rigidity, vibration damping, and alignment accuracy. Each unit is optimized for stability during high-speed and heavy-load operations, making it ideal for complex part processing. We offer customization based on machine model, size, and application requirements.

Q: Do you have optical machines that comply with VMC or repair machine frames?

A: We have wire or hard rail milling composite machines.

Q: Can you provide the corresponding accessories?

A: We can provide the relevant accessories, such as turret and tool holders.

Q: How to choose the appropriate optical machine according to your needs?

A: Firstly, it is necessary to clarify the application scenario and specific requirements. In addition, factors such as the size, weight, and interface type of the optical machine need to be considered to ensure that it can be used in conjunction with other devices.

Q: What factors affect the stability of optical machines?

A: The stability of optical machines is influenced by various factors, including the rigidity of mechanical structures, the thermal stability of materials, changes in environmental temperature and humidity, vibration, etc.

Q: What method of transportation do you use?

A: Generally by sea.

For more information, please visit CNC Collet Chuck Price.

About Vise

Drake’s precision vises are built for stable and secure clamping in milling, drilling, and CNC machining operations. Available in mechanical, hydraulic, and pneumatic types, our vises offer strong clamping force, wear resistance, and excellent repeatability. Made from high-strength alloy steel, the jaws are hardened for durability and accuracy under heavy loads. Suitable for both metal and wood applications, Drake vises are ideal for manufacturers seeking efficiency, reliability, and long service life.

Q: How do the vise work?

A: Vises work through components such as lead screws, nuts, and jaws. When the screw is rotated, the nut will move on the screw, thereby driving the movable jaw to move relative to the fixed jaw, achieving clamping and loosening of the workpiece. The thread fit of the screw and nut can provide a large clamping force, ensuring that the workpiece remains fixed during the machining process.

Q: What types of vices do you have?

A: We have mechanical vises, hydraulic vises, and pneumatic vises.

Q: What are the specifications for the width of the vise jaws?

A: The width specifications of vise jaws are diverse, commonly including 50mm, 60mm, 80mm, 100mm, 125mm, 150mm, 200mm, etc.

Q: How to install vises correctly?

A: Choose the appropriate installation location, usually on the worktable of the machine tool. Place the vise on the workbench and use fixing devices such as bolts or pressure plates to securely fix the vise on the workbench. Pay attention to making the jaws of the vise parallel or perpendicular to the coordinate axis of the machine tool.

Q: Can your vise be used for wood processing?

A: Vises are suitable for various types of workpieces, including metal parts of various shapes, plastic parts, wood, etc.

Q: What material is the vise made of?

A: 20CrMnTi, which is alloy steel.

About CNC lathe machine

Drake’s CNC lathe machines deliver high-precision turning performance for both simple and complex components. Designed with rigid cast iron beds, servo-driven spindles, and advanced control systems, our lathes ensure excellent accuracy, stability, and repeatability. Available in horizontal and vertical configurations, they support a wide range of tooling systems and automation options. Ideal for industries such as automotive, aerospace, and mold manufacturing, Drake CNC lathes help increase productivity while reducing cycle time and manual intervention.

Q: Is your lathe vertical or horizontal?

A: We both have the vertical and horizontal lathe.

Q: Is your lathe CNC or manual?

A: We both have the CNC and manual lathe.

Q: What are the advantages of CNC lathe machine?

A: 1. High Precision   2. Stable Processing Quality   3. High Degree of Automation   4. High Production Efficiency   5. Strong Capability for Complex Part Machining

Q: Are you a factory or distributor?

A: We are Industry and trade integration.

Q: What method of transportation do you use?

A: Generally by sea.

About Collet Chuck

Drake’s collet chucks offer high-precision, quick-change clamping solutions for CNC lathes and machining centers. Available in pneumatic, hydraulic, and vertical styles, our collet chucks provide strong gripping force and excellent concentricity, ideal for high-speed, high-accuracy operations. Designed to accommodate various workpiece sizes, they ensure minimal runout and improved machining efficiency. Customizable models and matching accessories, such as collets and claws, are also available to meet specific application requirements.

Q: What type of collet chuck can you provide?

A: We have hydraulic collet chucks and pneumatic collet chucks.

Q: What is the general clamping force range of the chuck?

A: The clamping force of the hydraulic chuck may be around -N. The clamping force of pneumatic chuck is usually around 500-N.

Q: How long is the service life of the chuck generally?

A: The service life of the chuck is affected by various factors, including the material, manufacturing process, frequency of use, usage environment, and maintenance status of the chuck, so it is difficult to give an exact time.

Q: Do you provide compatible collet chucks?

A: The collet chuck needs to be purchased separately.

Q: What configurations can rotary pneumatic chuck provide?

A: This chuck can be used in either internal or external clamp configurations.

Q: What is the difference between front push and rear pull collet chucks?

A: The forward push chuck achieves clamping by pushing forward, using the front push rod to tighten the clamping claw. The pull back chuck achieves clamping by pulling backwards. Pull back chucks typically offer higher positioning accuracy and repeatability, suitable for precision machining, while front push chucks are more widely used where speed and ease of clamping are prioritized over high precision.

Q: How to choose a collet chuck?

A: The collet chucks are divided into: pneumatic collet chucks, hydraulic collet chucks, and vertical collet chucks.

Q: How to choose the chuck size?

A: What is the size of your workpiece?

Q: What is the delivery and warranty period?

A: The chuck body is in stock, but the collet needs to be customized according to the size of your workpiece. The production lead time is about 10-15 days, and the warranty period is 12 months.

Q: Can the accessories of collet chuck products be sold separately?

A: Collet and claw can be sold separately.

Q: Can I clamp a 10mm workpiece, and after working for a while, replace the chuck and clamp a 16mm workpiece?

A: Yes, it is one-to-one size.

Q: Can it be customized?

A: Can be customized according to your drawings.

Q: What accessories are there?

A: Installation screws and air nozzles, as well as collet wrenches.

Q: Can the matching collet be purchased separately?

A: Yes.

Q: Can you recommend a model?

A: Yes, please tell us the speed, clamping accuracy, whether to rotate, clamping force, and processing you need.

About Angle head

Drake’s angle heads are precision accessories designed to extend the machining capabilities of CNC machines by enabling tool operation at various angles. Available in light, 90-degree right-angle, universal, and tilt series, our angle heads ensure high accuracy and smooth transmission through advanced gearing and assembly. Compatible with multiple spindle interfaces like SK, CAT, BT, and HSK, they support maximum rotational speeds up to rpm. Customizable angles and heights are available to suit diverse machining requirements, backed by reliable performance and a 12-month warranty.

Q: What is the maximum rotational speed of your angle head?

A: Generally, the maximum speed that the angle head can achieve is rpm.

Q: What input options can you provide?

A: We can provide multiple driven handle options, such as HK, HSK, CAT, KM, BT, and NT.

Q: How to ensure the accuracy of the angle head?

A: The accuracy of the angle head is mainly ensured through high-precision component manufacturing and assembly.

Q: What is the working principle of the angle head?

A: Angle head is a type of machine tool accessory, which works by transmitting the rotational motion of the machine tool spindle to the tool through internal transmission mechanisms such as gears and shafts, and changing the axis direction of the tool to form a certain angle with the machine tool spindle axis, thereby achieving machining of workpieces in different angle directions.

Q: What are the notices for installing the angle head on the machine tool?

A: Firstly, it is necessary to correctly install the machine tool spindle and angle head connecting bolts. During the installation process, specialized installation tools should be used to follow the prescribed installation steps. Attention should be paid to adjusting the position and angle of the angle head. After installation, a trial run should be conducted to check whether the rotation of the angle head is smooth, and whether there are any abnormal noises or vibrations.

Q: What is the maximum adjustable angle of your angle head?

A: The adjustable angle of our universal angle head is 360 degrees.

Q: How to choose an angle head?

A: Angle head options include: light series, 90 degree right angle series, universal series, and tilt series.

Q: What are the available drive handle models?

A: SK, CAT, BT, K, NT, HSK, etc.

Q: Can the angle of your angle head be customized?

A: The angle can be customized according to your requirements. We usually produce 30 degrees, 60 degrees, 90 degrees, and universal types.

Q: Can the height of your angle head be customized?

A: The angle head can be customized according to the height you require.

Q: What is the delivery and warranty period?

A: The standard product delivery time is 7–10 days, and the warranty period is 12 months.

Q: Can the accessories of the angle head be sold separately?

A: Can be sold separately.

Q: Can it be customized?

A: Yes, please provide the interface size.

At Drake, we understand that choosing the right machine tool accessories is critical for achieving optimal machining efficiency and product quality. Our FAQ section covers essential topics such as product specifications, compatibility, installation methods, customization options, delivery timelines, and warranty policies. Supported by industry-leading technology and professional customer service, Drake’s accessories are designed to boost your manufacturing productivity and minimize downtime. Trust Drake for reliable, high-precision components tailored to your specific needs.

Superior Grinding: Design by Drake - Gear Solutions Magazine

Sometimes a new machine is just destined to happen. Markets evolve, new technologies emerge, and an experienced machine tool builder seizes the opportunity. The result: the right machine, at the right time, at the right price.

Drake Manufacturing, which is located in Warren, Ohio, is putting the finishing touches on a highly productive 6-axis gear grinder that will be grinding quality parts after just 15-minutes of setup. The best part is — like Drake’s other gear and thread manufacturing machines — it’s priced to provide high return on investment for the job shop owner as well as the large, automotive supplier. (Figure 1)

Drake is best known for its line of CNC gear hobbers, thread and worm grinders, rack mills, and bore grinders. The GS:G2 is a machine that blends the best of Drake’s specialty grinding and gear making expertise.

As the basis of competition in the power transmission and speed reducer markets increasingly shifts toward quiet operation and efficiency, more and more manufacturers are calling for precision ground gears. The Drake GS:G2 enables manufacturers to source near net-shaped or hobbed gears from low-cost suppliers and still control the final product quality. “This is a high value-added grinder, that with minimal capital outlay, can help our customers remain globally competitive for years to come,” according to Stig Mowatt-Larssen, Drake’s manager of research and development.

A Flexible Grinder

The GS:G2 has the flexibility and capability to handle a variety of grinding roles: job shop work, manufacturing cell environments, high volume grinding, even prototype work. Fast changeovers with menu driven setup screens — no more change gears or dressing thread wheels — make it easy to switch from job to job.

Ideal customers for the Drake GS:G2 are manufacturers and suppliers of industrial, off-highway and heavy equipment power transmissions, speed reducers, and gearboxes. Actually, anyone who is producing gears and has wanted ground gears but thought an affordable gear grinder was unobtainable is a potential customer. Drake Manufacturing Services made CNC thread grinders affordable 20 years ago and is now working to do the same in gear grinding. “We want to take the mystery out of gear grinding and make that technology widely available and less intimidating,” says Michael Hughes, systems engineer at Drake. (Figure 2)

Quick Changeovers

The key to this grinder’s productivity is fast setups. A new part can be running in 15-minutes or less. Wheel changes require an additional 15-minutes of setup. There are no change gears to install or complicated wheel dressing routines. All the operator does is install the proper tooling, enter the new part’s form, dress, and grind parameters into the menu driven control and go — that’s all it takes to start up a new job. Gear job shops will appreciate the rapid changeovers from one form to another. One job shop evaluating the new grinder is analyzing the possibility of eliminating its stock of special hobs.

Those medium volume manufacturers that operate in lean, make-to-order manufacturing cell environments with families of gears to manufacture will love this machine. The G2 will make it economic for them to provide their customers with assemblies that are quiet and have the efficiency that ground gears can provide in gearboxes, transmissions, and reducers.

GearSmart Programming

Drake makes all of its machine tools very easy for the customer to operate. “Our customers do not want machine tools, they want quality parts out their door,” says John Drake, the company’s CEO. “Our menus give an operator the tools needed to make good parts. Manufacturers want their people making parts — not fighting some arcane machine control language,” he adds. Drake machines provide menu entries for the machine operator to define the part, tooth form, and dress and grind process. This GearSmartTM programming guarantees “good parts out your door from day one.” (Figure 3)

All Drake machines are designed and programmed for the customer’s specific manufacturing environment. Dressing forms, grind paths, spindle and work RPM are all pre-calculated and stored in the control’s memory. “In developing the menu entries, our systems engineers use the customer’s terminology. Drake makes it easy for the operators to enter the needed parameters into the CNC — right off their setup sheet or part print. Skilled machinists are hard to find. The machine has to be simple to set up and operate,” says Rick Sanders, manager of systems engineering at Drake.

To setup and run a given part, the operator is only required to enter specific part and process information (number of teeth, face width, blank O.D., diametrical pitch, etc.) for the part, prompted by menu-driven screens. (Figure 4)

The GearSmartTM grinding and dressing menu provides entries for infinitely variable wheel speeds and feeds, for rough and finish grinding, and for full control of wheel dressing and truing. With the Drake Smart SpindleTM option, through acoustical emissions monitoring, expensive superabrasive wheels can be precisely trued and dressed at the micron level. Effects of thermal movement do not result in wasted abrasives or poorly conditioned wheels. Additional menu entries are available to suit specific customer applications.

No programming knowledge is required on the shop floor. GearSmartTM programming lets shops hire machine operators instead of seeking increasingly hard-to-find journeymen machinists. (Figure 5)

Dual Wheel Capability

On the GS:G2, the first wheel can be used for quick removal of preformed rough stock or even to grind from a solid blank. A robust spindle and 20 hp Fanuc spindle motor allows heavy roughing cuts. The second wheel would then be used for final tooth profile grinding and surface finish. This two-in-one productive capability reduces the need to carry an expensive hobbing tool inventory, and can eliminate special hobs entirely.

Technology Highlights

Drake equips the GS:G2 with the latest Fanuc CNC controls and servos, giving it world-class positioning and grinding accuracy. The cast polymer base, wheel head, work table and work slide components provide a very stiff grinding platform to take advantage of today’s state of the art superabrasive grinding wheels. The machine will easily produce gears that exceed AGMA 12 specs, productively and cost effectively, from 1″ to 12″ diameter. (Figure 6)

Cast Polymer Base

Grinding accuracy begins with a machine’s base components. The G2 uses a mineral filled cast polymer base to dampen vibration and minimize thermal conductivity. The polymer base material provides machine stability that results in better grinding accuracy.

Precise Work Rotation and Angular Positioning

A Fanuc heavy-duty, enclosed synchronous torque motor that provides for very smooth rotation and backlash free position holding drives the worktable (C-axis). When combined with eight million-count encoder feedback, the torque motor C-axis provides tooth-to-tooth index positioning resolution of less than .2 arc seconds (.000,045ƒ). In this direct drive system, there is no coupling sloppiness, backlash or windup that can introduce positioning errors. Profile grinding of spur gears with exact tooth-to-tooth index is achievable with this technology. Of course, helical gears — up to 45ƒ helix angle — are no problem, either. Accurate C-axis spindle positioning, combined with Drake’s SmartSpindleTM acoustical emissions monitoring feature, allows fully automated gear tooth location and stock division for finding precut parts without operator intervention or dogging. (Figure 7)

SmartSpindleTM is Drake’s acoustic emission technology that detects the sound of the grinding wheel touching the part to an accuracy of one micron. The wheel touches one side of the gear tooth then the other, and centers itself before grinding an equal amount of stock from both sides. Touch dressing and automatic wheel balancing is also included on all Drake grinders equipped with the SmartSpindleTM feature.

Linear Axis Positioning

The linear axes move on preloaded recirculating roller linear ways for high stiffness, long life, and ease of repair. Precision ground preloaded ball screws provide accurate positioning. The latest Fanuc AC servomotors with high-count encoders and .000,004″ resolution linear scale feedback drive the contouring axes. While using the best available components is an absolute necessity, Drake’s ISO: registered quality system assures that all components are installed and aligned such that the dynamic accuracy of its machines are second to none on delivery day as well as after years of multiple shift operations.

SmartForm CNC Diamond Roll Dressing

The GS:G2 is equipped with Drake’s SmartFormTM 2-axis CNC contour diamond roll dresser that utilizes 115 mm diameter rolls for wheel profiling and conditioning.

Wheel forms are generated by simultaneous CNC contouring of X and W-axes or by plunging with the X-axis when using a profile (form) roll. A precision diamond roll is used to create the exact gear tooth profile on the abrasive wheel, using a continuous path movement and holding tolerances in the tens of millionths throughout the life of the wheel. Automatic dressing assures that the wheel is properly shaped and sharpened at all times. Frequency of dressing depends on such factors as the surface finish needed, wheel type and stock removal rate.

Dressing software allows for involute profile modifications for prototypes or custom gear teeth. Both left and right tooth flanks can be modified independently. Drake has applied the experience it has developed in over twenty years of CNC contour dressing on its worm and thread grinders to the dresser of the G2. “We know how to CNC contour dress a complex form in a grinding wheel over and over again,” says Hughes.

Drake had expected to show off the machine at IMTS, but — not surprisingly — the machine has been sold. However, the company will have a video presentation on the GS:G2 at its booth (B-).

What Will be at IMTS?

What visitors will see at Drake’s booth is its new Linear Motor Thread Grinder. This grinder, built on a cast polymer base, will be equipped with a host of Drake’s advanced machine design, productivity options and grinding technologies. The linear motors eliminate ballscrews, couplings, backlash, and other sources of reduced accuracy, lead error, and drunkenness. On the positive side, linear motor drives provide for rapid acceleration and motion needed for thread relieving, crowning, and other profiling moves.

Drake wants customers to be able to grind a wide range of threaded, slotted, or otherwise grooved parts on one machine. The machine will be able to grind threads, splines, key slots, rings, and other forms in one setup using the latest superabrasives with confidence. “We want to show manufacturers globally what intelligent machine design, coupled with a scientific approach to grinding can do to reduce setup times, improve part quality, and maximize productivity, ” says John Drake. “Of course, as a Drake grinder, it will be delivered fully programmed and ready to put customer parts out the door from day one.”

Drake goes on to say that “The new thread grinder will be of great interest to customers producing steering components, multi-start worms, fast lead ball screws, taps, feed and bone screws, gear boxes, transmissions and speed reducers.”