A structure of a long-stroke CNC double-sided grinding machine for equilateral grinding with barrel-shaped grinding wheels

Abstract

This utility model discloses a structure for a long-stroke CNC double-sided grinding machine for equilateral grinding with barrel-shaped grinding wheels. It includes a frame, on which a left spindle box and a right spindle box are respectively mounted on symmetrical left and right spindle box seats. A Z1 / Z2 axis servo motor is mounted on the top of the frame, and the Z1 / Z2 axis servo motor is connected to a Z1 / Z2 axis ball screw via a Z1 / Z2 axis coupling. Z1 / Z2 axis nut seats are respectively mounted at the bottom of the left and right spindle boxes, and Z1 / Z2 axis screw nuts connected to the Z1 / Z2 axis ball screws are mounted on the Z1 / Z2 axis nut seats. The bottoms of the left and right spindle boxes are respectively connected to the frame via Z1 / Z2 axis linear guides. This utility model offers stable operation, avoids the drawbacks of inconsistent concave arc and width on the grinding surface, features a long processing stroke, significantly improves the effective utilization rate of the grinding wheel, effectively enhances product quality, and reduces production costs.

Description

Technical Field

[0001] This utility model relates to the field of knife grinding machine technology, specifically to a structure for a double-sided knife grinding machine for long-stroke CNC barrel-shaped grinding wheels with equal sides. Background Technology

[0002] Currently, symmetrical double-sided cutting edge grinding of hardware cutters and scissors is mostly carried out using external cylindrical grinding wheels in double-sided grinding machines. However, this method has the following drawbacks: 1. As the grinding wheel wears down, its outer diameter decreases, causing inconsistencies in the concave arc and width of the ground surface, making it impossible to guarantee consistent grinding surfaces for every product and affecting quality. 2. The usable range of the outer diameter of the external cylindrical grinding wheel is limited, resulting in a large amount of wheel residue and increased production costs. 3. The effective processing length is short, and the length of the processed workpiece cannot meet market demands. Therefore, to avoid the shortcomings of the existing technology, it is necessary to improve it. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies in the existing technology and provide a structure for a double-sided grinding machine for long-stroke CNC barrel-shaped grinding wheels with equal sides.

[0004] This utility model is achieved through the following technical solution:

[0005] A structure for a long-stroke CNC double-sided grinding machine for equilateral grinding of barrel-shaped grinding wheels includes a frame. A left spindle box and a right spindle box are respectively mounted on symmetrical left and right spindle box seats on the frame. A Z1 / Z2 axis servo motor is mounted on the top of the frame. The Z1 / Z2 axis servo motor is connected to a Z1 / Z2 axis ball screw via a Z1 / Z2 axis coupling. Z1 / Z2 axis nut seats are respectively mounted on the bottom of the left spindle box and the bottom of the right spindle box. The base is equipped with a Z1 / Z2 axis ball screw nut connected to the Z1 / Z2 axis ball screw. The bottom of the left spindle box and the bottom of the right spindle box are respectively connected to the frame via Z1 / Z2 axis linear guides. Spindles are installed in the left spindle box and the right spindle box respectively. A barrel-shaped grinding wheel is installed at one end of the spindle, and a spindle driven wheel is installed at the other end of the spindle. The left spindle motor is installed on the top of the left spindle box, and the right spindle motor is installed on the top of the right spindle box. The machine frame consists of an X-axis motor, with the left and right spindle motors each connected to a spindle drive pulley. The driven spindle pulley is connected to the drive pulley via a belt drive. An X-axis base is mounted on the mounting bracket on the right front side of the frame via an X-axis linear guide rail. An X-axis servo motor is mounted on the X-axis base, and the X-axis servo motor is connected to an X-axis ball screw via an X-axis coupling. An X-axis nut seat is mounted on the X-axis base, and a connector connected to the X-axis ball screw is mounted on the X-axis nut seat. The X-axis screw nut is provided. The X-axis base is mounted with a Y-axis base via a Y-axis linear guide. The Y-axis base is mounted with a Y-axis servo motor. The Y-axis servo motor is connected to a Y-axis ball screw via a Y-axis coupling. The Y-axis base is mounted with a Y-axis nut seat. The Y-axis nut seat is mounted with a Y-axis screw nut connected to the Y-axis ball screw. The Y-axis nut seat is mounted with a tool beam. The tool beam is mounted with a tool holder. The tool holder is mounted with a clamp. The clamp is mounted with a workpiece.

[0006] Furthermore, the angle between the left spindle box and the right spindle box is 90 degrees.

[0007] Furthermore, spindle bearings for mounting the spindle are respectively installed in the left spindle box and the right spindle box.

[0008] Furthermore, the left spindle box is equipped with a left grinding wheel cover, and left grinding wheel detection devices are installed on both sides of the left grinding wheel cover; the right spindle box is equipped with a right grinding wheel cover, and right grinding wheel detection devices are installed on both sides of the right grinding wheel cover.

[0009] Furthermore, a system control box is mounted on the top of the rack.

[0010] Furthermore, an electrical box is mounted on the top of the frame.

[0011] Compared to existing technologies, this utility model features a left spindle box and a right spindle box mounted on symmetrical spindle box seats on the left and right sides of the frame. A Z1 / Z2 axis servo motor is mounted on the top of the frame, and the Z1 / Z2 axis servo motor is connected to a Z1 / Z2 axis ball screw via a Z1 / Z2 axis coupling. Z1 / Z2 axis nut seats are mounted at the bottom of the left and right spindle boxes, respectively. Z1 / Z2 axis nut seats are fitted with Z1 / Z2 axis ball screw nuts that connect to the Z1 / Z2 axis ball screws. The bottom of the left spindle box... The bottom of the main body and the right spindle box are connected to the frame via Z1 / Z2 axis linear guides. Spindles are installed inside the left and right spindle boxes respectively. A barrel-shaped grinding wheel is mounted on one end of each spindle, and a driven spindle wheel is mounted on the other end. A left spindle motor is mounted on the top of the left spindle box, and a right spindle motor is mounted on the top of the right spindle box. The left and right spindle motors are connected to drive spindle wheels, and the driven spindle wheels are connected to the drive spindle wheels via belt drives. An X-axis linear guide is mounted on the mounting base on the right front side of the frame. The X-axis machine base is equipped with an X-axis servo motor, which is connected to an X-axis ball screw via an X-axis coupling. An X-axis nut holder is also mounted on the X-axis machine base, housing an X-axis ball screw nut for connection to the X-axis ball screw. A Y-axis machine base is mounted on the X-axis machine base via a Y-axis linear guide, housing a Y-axis servo motor, which is connected to a Y-axis ball screw via a Y-axis coupling. A Y-axis nut holder is also mounted on the Y-axis machine base, housing a Y-axis ball screw nut for connection to the Y-axis ball screw. The Y-axis lead screw nut is connected to the rod. A tool beam is mounted on the Y-axis nut seat, a tool holder is mounted on the tool beam, a fixture is mounted on the tool holder, and a workpiece is mounted on the fixture. During operation, Z1 / Z2 axis servo motors drive the left and right barrel-shaped grinding wheels to move horizontally at an angle to each other, respectively. The X-axis servo motor drives the workpiece to move horizontally back and forth, and the Y-axis servo motor drives the workpiece to move vertically up and down. This achieves precise workpiece machining, high automation, ease of use, comprehensive machining capabilities, standardized production quality, and high production efficiency, offering the following advantages:

[0012] 1. The X, Y, Z1, and Z2 axes of this machine are driven by absolute value servo motors, pushed by high-precision ball screws, and slid by high-precision roller linear guides, which makes the repeatability and positioning accurate, the operation stable, and the processing surface smooth and beautiful. This solves the problems of unstable processing quality, long machine setup time, and low efficiency of traditional hydraulic double-sided grinders.

[0013] 2. This machine adopts a double-barrel type grinding wheel for grinding, which greatly improves the effective utilization rate of the grinding wheel, reduces the amount of residual grinding wheel, and lowers production costs.

[0014] 3. The two-barrel grinding wheel machining is a constant diameter contact machining process, which avoids the outer diameter of the outer cylindrical grinding wheel becoming smaller due to wear, and avoids the disadvantages of inconsistent concave arc and width of the grinding surface. This can effectively improve product quality, thereby directly reducing production costs and achieving energy-saving goals.

[0015] 4. This machine has a long processing stroke (0-1000mm), which can meet the grinding needs of most products on the market. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the equilateral grinding long-stroke CNC barrel-shaped grinding wheel double-sided grinding machine of this utility model;

[0018] Figure 2 This is a front view of the structure of the equilateral grinding long-stroke CNC barrel-shaped grinding wheel double-sided grinding machine of this utility model;

[0019] Figure 3 for Figure 2 QQ cross-section diagram;

[0020] Figure 4 This is a top view of the structure of the equilateral grinding long-stroke CNC barrel-shaped grinding wheel double-sided grinding machine of this utility model;

[0021] Figure 5 for Figure 4 RR cross-section;

[0022] Figure 6 This is a left view of the structure of the equilateral grinding long-stroke CNC barrel-shaped grinding wheel double-sided grinding machine of this utility model;

[0023] Figure 7 for Figure 6 VV cross-section diagram;

[0024] Figure 8 for Figure 6 TT cross-sectional view.

[0025] In the diagram: 1-Frame; 2-X-axis base; 3-X-axis servo motor; 4-X-axis coupling; 5-X-axis ball screw; 6-X-axis screw nut; 7-X-axis nut seat; 8-X-axis linear guide; 9-Y-axis base; 10-Y-axis servo motor; 11-Y-axis coupling; 12-Y-axis ball screw; 13-Y-axis nut seat; 14-Y-axis screw nut; 15-Tool holder; 16-Tool beam; 17-Y-axis linear guide; 18-Z1 / Z2 axis linear guide; 19-Z1 / Z2 axis servo motor; 20-... - Z1 / Z2 axis coupling; 21- Z1 / Z2 axis ball screw; 22- Z1 / Z2 axis screw nut; 23- Z1 / Z2 axis nut seat; 24- Right spindle motor; 25- Left spindle motor; 26- Spindle drive wheel; 27- Spindle bearing; 28- Spindle; 29- Spindle driven wheel; 30- Left spindle box; 31- Right spindle box; 32- Barrel-shaped grinding wheel; 33- Workpiece; 34- Fixture; 35- Left grinding wheel detection device; 36- Right grinding wheel detection device; 37- Electrical box; 38- System operation box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 8The present invention discloses a structure for a long-stroke CNC double-sided grinding machine for equilateral grinding of barrel-shaped grinding wheels. It includes a frame 1, with a left spindle box 30 and a right spindle box 31 respectively mounted on the left and right symmetrical spindle box seats of the frame 1. A Z1 / Z2 axis servo motor 19 is mounted on the top of the frame 1. The Z1 / Z2 axis servo motor 19 is connected to a Z1 / Z2 axis ball screw 21 via a Z1 / Z2 axis coupling 20. Z1 / Z2 axis nut seats 23 are respectively mounted at the bottom of the left spindle box 30 and the bottom of the right spindle box 31. The 2-axis nut seat 23 is equipped with a Z1 / Z1 axis ball screw nut 22 connected to the Z1 / Z2 axis ball screw 21. The bottom of the left spindle box 30 and the bottom of the right spindle box 31 are respectively connected to the frame 1 via Z1 / Z2 axis linear guides 18. Spindles 28 are installed in the left spindle box 30 and the right spindle box 31 respectively. A barrel-shaped grinding wheel 32 is installed at one end of the spindle 28, and a spindle driven wheel 29 is installed at the other end of the spindle 28. The left spindle motor 25 is installed on the top of the left spindle box 30, and the right spindle box 31 is equipped with... There is a right spindle motor 24, a left spindle motor 25, and a right spindle motor 24, each connected to a spindle drive wheel 26. A spindle driven wheel 29 is connected to the spindle drive wheel 26 via a belt drive. An X-axis base 2 is mounted on the mounting seat on the right front side of the frame 1 via an X-axis linear guide rail 8. An X-axis servo motor 3 is mounted on the X-axis base 2. The X-axis servo motor 3 is connected to an X-axis ball screw 5 via an X-axis coupling 4. An X-axis nut seat 7 is mounted on the X-axis base 2, and an X-axis screw thread connected to the X-axis ball screw 5 is mounted on the X-axis nut seat 7. The mother 6 and X-axis base 2 are mounted with Y-axis base 9 via Y-axis linear guide 17. Y-axis base 9 is mounted with Y-axis servo motor 10. Y-axis servo motor 10 is connected to Y-axis ball screw 12 via Y-axis coupling 11. Y-axis base 9 is mounted with Y-axis nut seat 13. Y-axis nut seat 13 is mounted with Y-axis screw nut 14 connected to Y-axis ball screw 12. Y-axis nut seat 13 is mounted with tool beam 16. Tool beam 16 is mounted with tool holder 15. Tool holder 15 is mounted with clamp 34. Clamp 34 is mounted with workpiece 33. During operation, Z1 / Z2 axis servo motors 19 drive the left and right barrel grinding wheels 32 to move horizontally at an angle to each other, respectively. X-axis servo motor 3 drives workpiece 33 to move horizontally back and forth. Y-axis servo motor 10 drives workpiece 33 to move vertically up and down. This achieves precise workpiece machining, high automation, ease of use, comprehensive processing, uniform standard quality, and high production efficiency, with the following beneficial effects:

[0028] 1. The X, Y, Z1, and Z2 axes of this machine are driven by absolute value servo motors, pushed by high-precision ball screws, and slid by high-precision roller linear guides, which makes the repeatability and positioning accurate, the operation stable, and the processing surface smooth and beautiful. This solves the problems of unstable processing quality, long machine setup time, and low efficiency of traditional hydraulic double-sided grinders.

[0029] 2. This machine adopts a double-barrel type grinding wheel for grinding, which greatly improves the effective utilization rate of the grinding wheel, reduces the amount of residual grinding wheel, and lowers production costs.

[0030] 3. The two-barrel grinding wheel machining is a constant diameter contact machining process, which avoids the outer diameter of the outer cylindrical grinding wheel becoming smaller due to wear, and avoids the disadvantages of inconsistent concave arc and width of the grinding surface. This can effectively improve product quality, thereby directly reducing production costs and achieving energy-saving goals.

[0031] 4. This machine has a long processing stroke (0-1000mm), which can meet the grinding needs of most products on the market.

[0032] As a specific implementation method, the angle between the left spindle box 30 and the right spindle box 31 is 90 degrees. With the left spindle box and the right spindle box installed at a 90-degree angle, the wear of the barrel-shaped grinding wheel does not change the outer diameter of the grinding wheel, thus ensuring that the width and concave arc of the grinding surface of each workpiece are consistent. This effectively improves product quality and avoids the problem of inconsistent width and concave arc of the grinding surface caused by the change in the outer diameter due to the wear of the grinding wheel in the double-sided grinding machine with external cylindrical grinding wheel.

[0033] Spindle bearings 27 for mounting spindle 28 are installed in the left spindle box 30 and the right spindle box 31 respectively, making the installation of spindle 28 more stable and the rotation smoother.

[0034] The left spindle box 30 is equipped with a left grinding wheel cover, and left grinding wheel detection devices 35 are installed on both sides of the left grinding wheel cover. The right spindle box 31 is equipped with a right grinding wheel cover, and right grinding wheel detection devices 36 are installed on both sides of the right grinding wheel cover. After a single or multiple processing cycles are completed, the left grinding wheel detection devices 35 and the right grinding wheel detection devices 36 installed on both sides of the grinding wheel cover sequentially touch the barrel-shaped grinding wheel 32 to detect the wear amount and feed the data back to the system operation box for processing, so as to ensure that the processing amount is consistent each time.

[0035] The top of the frame 1 is equipped with a system control box 38, which facilitates the control of the barrel-type double-sided grinding machine.

[0036] An electrical box 37 is installed on the top of the frame 1 to facilitate power supply to the barrel-shaped double-sided grinding machine.

[0037] In addition to manually writing machining programs, this double-sided grinding wheel system can also generate machining programs by directly inputting simple parameters, directly read "DXF" diagrams to generate machining programs, and easily input points to automatically generate machining programs. It is easy to operate, has a robot connection function, and can realize automated machining operations.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for a double-sided grinding machine for long-stroke equilateral grinding of barrel-shaped grinding wheels by CNC, characterized in that: The system includes a frame, on which a left spindle box and a right spindle box are respectively mounted on symmetrical left and right spindle box seats. A Z1 / Z2 axis servo motor is mounted on the top of the frame, and the Z1 / Z2 axis servo motor is connected to a Z1 / Z2 axis ball screw via a Z1 / Z2 axis coupling. Z1 / Z2 axis nut seats are respectively mounted on the bottom of the left spindle box and the bottom of the right spindle box, and the Z1 / Z2 axis nut seats are fitted with Z1 / Z2 axis ball screws. The Z1 / Z1 axis lead screw nut is connected. The bottom of the left spindle box and the bottom of the right spindle box are respectively connected to the frame via Z1 / Z2 axis linear guides. Spindles are installed inside the left and right spindle boxes respectively. A barrel-shaped grinding wheel is installed at one end of each spindle, and a spindle driven wheel is installed at the other end. A left spindle motor is installed on the top of the left spindle box, and a right spindle motor is installed on the top of the right spindle box. The left spindle motor and... The right spindle motor is connected to a spindle drive wheel. The spindle driven wheel is connected to the spindle drive wheel via a belt drive. An X-axis machine base is mounted on the mounting base on the right front side of the frame via an X-axis linear guide. An X-axis servo motor is mounted on the X-axis machine base. The X-axis servo motor is connected to an X-axis ball screw via an X-axis coupling. An X-axis nut seat is mounted on the X-axis machine base. An X-axis screw nut connected to the X-axis ball screw is mounted on the X-axis nut seat. A Y-axis machine base is mounted on the X-axis machine base via a Y-axis linear guide. A Y-axis servo motor is mounted on the Y-axis machine base. The Y-axis servo motor is connected to a Y-axis ball screw via a Y-axis coupling. A Y-axis nut seat is mounted on the Y-axis machine base. A Y-axis screw nut connected to the Y-axis ball screw is mounted on the Y-axis nut seat. A tool beam is mounted on the Y-axis nut seat. A tool holder is mounted on the tool beam. A clamp is mounted on the tool holder. A workpiece is mounted on the clamp.

2. The structure of the equilateral grinding long-stroke CNC barrel-shaped double-sided grinding machine according to claim 1, characterized in that: The angle between the left and right spindle boxes is 90 degrees.

3. The structure of the equilateral grinding long-stroke CNC barrel-shaped double-sided grinding machine according to claim 1, characterized in that: Spindle bearings for mounting the spindle are respectively installed in the left spindle box and the right spindle box.

4. The structure of the equilateral grinding long-stroke CNC barrel-shaped double-sided grinding machine according to claim 1, characterized in that: The left spindle box is equipped with a left grinding wheel cover, and left grinding wheel detection devices are installed on both sides of the left grinding wheel cover. The right spindle box is equipped with a right grinding wheel cover, and right grinding wheel detection devices are installed on both sides of the right grinding wheel cover.

5. The structure of the equilateral grinding long-stroke CNC barrel-shaped double-sided grinding machine according to claim 1, characterized in that: The system control box is mounted on the top of the rack.

6. The structure of the equilateral grinding long-stroke CNC barrel-shaped double-sided grinding machine according to claim 1, characterized in that: An electrical box is mounted on top of the frame.

Images