Double-station numerical control tool grinder

Abstract

The application discloses a double-station numerical control tool grinder structure, which comprises a rack, and left and right sides of the rack are oppositely provided with adjustable-angle left spindle box seats and right spindle box seats, respectively; a left spindle box is installed on the left spindle box seat; a Z1 shaft servo motor is installed on the left spindle box seat; the Z1 shaft servo motor is connected with a Z1 shaft ball screw through a Z1 shaft coupling; a Z1 shaft nut seat is installed at the bottom of the left spindle box; the Z1 shaft nut seat is installed with a Z1 shaft screw nut connected with the Z1 shaft ball screw; the bottom of the left spindle box is connected with the left spindle box seat through a Z1 shaft linear guide rail; a left spindle is installed in the left spindle box; a left barrel-shaped grinding wheel is installed at one end of the left spindle; and a left driving device for driving the left barrel-shaped grinding wheel to rotate is installed at the top of the left spindle box. The application has the advantages of accurate repeated positioning, smooth and beautiful machined surface, greatly improved grinding wheel utilization rate and reduced production cost.

Description

Technical Field

[0001] This invention relates to the field of knife grinding machine technology, and specifically to a dual-station CNC knife grinding machine structure. Background Technology

[0002] Currently, symmetrical double-sided grinding of hardware and cutlery products is mostly performed using specialized hydraulic external cylindrical grinding wheel double-sided grinding machines and CNC external cylindrical grinding wheel double-sided grinding machines. Both types share the following drawbacks: 1. As the grinding wheel wears, its outer diameter decreases, resulting in inconsistent concave arcs and widths on the ground surface, making it impossible to guarantee consistent grinding surfaces for every product and affecting quality. 2. The applicable range of the external cylindrical grinding wheel's outer diameter is limited, leading to a large amount of wheel wear and increased production costs. Therefore, to avoid the shortcomings of existing technologies, it is necessary to improve them. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a dual-station CNC grinding machine structure with high processing accuracy and cost savings.

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

[0005] A dual-station CNC grinding machine structure includes a frame. An adjustable-angle left spindle box seat and a right spindle box seat are respectively mounted opposite each other on the left and right sides of the frame. A left spindle box is mounted on the left spindle box seat, and a Z1-axis servo motor is mounted on the left spindle box seat. The Z1-axis servo motor is connected to a Z1-axis ball screw via a Z1-axis coupling. A Z1-axis nut seat is mounted at the bottom of the left spindle box, and a Z1-axis screw nut connected to the Z1-axis ball screw is mounted on the Z1-axis nut seat. The bottom of the left spindle box is connected to the Z1-axis... A linear guide rail is connected to the left spindle box housing. A left spindle is installed inside the left spindle box, and a left barrel-shaped grinding wheel is mounted at one end of the left spindle. A left drive unit for driving the left barrel-shaped grinding wheel is mounted on the top of the left spindle box. A right spindle box is mounted on the right spindle box housing, and a Z2-axis servo motor is mounted on the right spindle box housing. The Z2-axis servo motor is connected to a Z2-axis ball screw via a Z2-axis coupling. A Z2-axis nut seat is mounted at the bottom of the right spindle box, and a Z2-axis ball screw connected to the Z2-axis ball screw is mounted on the Z2-axis nut seat. The bottom of the right spindle box is connected to the right spindle box base via a Z2 axis linear guide. A right spindle is installed inside the right spindle box, and a right barrel-shaped grinding wheel is mounted at one end of the right spindle. A right drive device for driving the right barrel-shaped grinding wheel is mounted on the top of the right spindle box. An X-axis machine base is mounted on the right front side of the frame, and 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, and a connector for the X-axis ball screw is mounted on the X-axis nut seat. An X-axis ball screw nut is connected by a ball screw. A Y-axis machine base is mounted on the X-axis linear guide rail. A Y-axis servo motor and a Y-axis linear guide rail are 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 base plate is mounted on the Y-axis machine base via the Y-axis linear guide rail. A Y-axis nut seat is mounted on the Y-axis base plate. A Y-axis ball 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 base plate. A fixture is mounted on the tool beam. A workpiece is mounted on the fixture.

[0006] Furthermore, a left spindle box adjustment block is installed on the left side of the top of the frame.

[0007] Furthermore, a right spindle box adjustment block is installed on the right side of the top of the frame.

[0008] Furthermore, the left drive device includes a left spindle motor mounted on the top of the left spindle box, a left spindle driven pulley mounted on the other end of the left spindle, the left spindle motor connected to a left spindle drive pulley, and the left spindle driven pulley and the left spindle drive pulley connected by a left belt drive.

[0009] Furthermore, the right drive device includes a right spindle motor mounted on the top of the right spindle box, a right spindle driven pulley mounted on the other end of the right spindle, the right spindle motor connected to a right spindle drive pulley, and the right spindle driven pulley and the right spindle drive pulley connected by a right belt drive.

[0010] Furthermore, a left spindle bearing for mounting the left spindle is installed inside the left spindle housing.

[0011] Furthermore, a right spindle bearing for mounting the right spindle is installed inside the right spindle housing.

[0012] Furthermore, the left barrel-shaped grinding wheel and the right barrel-shaped grinding wheel are installed at an adjustable angle, facing each other at the same horizontal plane.

[0013] Furthermore, an electrical box is mounted on the top of the frame.

[0014] Furthermore, a CNC system is installed on the top of the frame.

[0015] Compared to existing technologies, this invention features adjustable-angle left and right spindle housings mounted opposite each other on the left and right sides of the frame. A left spindle housing is mounted on the left spindle housing, and a Z1-axis servo motor is mounted thereon. The Z1-axis servo motor is connected to a Z1-axis ball screw via a Z1-axis coupling. A Z1-axis nut seat is mounted at the bottom of the left spindle housing, and a Z1-axis screw nut connected to the Z1-axis ball screw is mounted thereon. The bottom of the left spindle housing is connected to the left spindle housing via a Z1-axis linear guide rail. A left spindle is installed inside the left spindle housing, and a left barrel-shaped sand fitting is mounted at one end of the left spindle. The left spindle box has a left drive unit mounted on top of it to rotate the left barrel-shaped grinding wheel. A right spindle box is mounted on the right spindle box base, and a Z2-axis servo motor is mounted on the right spindle box base. The Z2-axis servo motor is connected to a Z2-axis ball screw via a Z2-axis coupling. A Z2-axis nut seat is mounted on the bottom of the right spindle box, and a Z2-axis screw nut connected to the Z2-axis ball screw is mounted on the Z2-axis nut seat. The bottom of the right spindle box is connected to the right spindle box base via a Z2-axis linear guide. A right spindle is installed inside the right spindle box, and a right barrel-shaped grinding wheel is mounted on one end of the right spindle. A drive unit for rotating the right barrel-shaped grinding wheel is mounted on the top of the right spindle box. The machine features a right-hand drive unit for rotating the grinding wheel. An X-axis base is mounted on the front right side of the frame, housing an X-axis servo motor. 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, housing an X-axis screw nut connected to the X-axis ball screw. A Y-axis base is mounted on the X-axis base via an X-axis linear guide, housing a Y-axis servo motor and a Y-axis linear guide. The Y-axis servo motor is connected to a Y-axis ball screw via a Y-axis coupling. A Y-axis base plate is mounted on the Y-axis base via the Y-axis linear guide, and a Y-axis nut seat is mounted on the Y-axis base. The Y-axis nut seat is equipped with a Y-axis screw nut connected to the Y-axis ball screw. A tool beam is mounted on the Y-axis base plate, and a fixture is mounted on the tool beam. The fixture holds the workpiece. During operation, the Z1-axis servo motor drives the left barrel-shaped grinding wheel to move left and right, and the Z2-axis servo motor drives the right barrel-shaped grinding wheel to move left and right. The left and right barrel-shaped grinding wheels move horizontally at an angle to each other. 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, a high degree of automation, ease of use, comprehensive machining capabilities, standardized production quality, and high production efficiency. It offers the following advantages:

[0016] 1. The X, Y, Z1, and Z2 axes of this machine are all driven by absolute servo motors, pushed by high-precision ball screws, and slid by high-precision roller linear guides, which makes adjustment convenient, repeatability accurate, operation stable, and the machined 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.

[0017] 2. This machine adopts a double-barrel type grinding wheel for grinding, which greatly improves the effective utilization rate of the grinding wheel and reduces production costs.

[0018] 3. The two spindle boxes are symmetrically installed with adjustable included angles and equipped with barrel-shaped grinding wheels. The two barrel-shaped grinding wheels are in equal-diameter contact machining, which avoids the problem of inconsistent concave arc and width of the grinding surface caused by the outer diameter of the outer cylindrical grinding wheel decreasing due to wear. During the machining process, the grinding concave surface will not be affected by the wear of the grinding wheel, effectively ensuring the consistency of each product and improving product quality. The barrel-shaped grinding wheel adjustable included angle structure has a high grinding wheel utilization rate, overcoming the disadvantage of excessive residual grinding wheel in traditional double-sided grinding machines with outer cylindrical grinding wheels. This directly reduces production costs and achieves energy-saving goals, and is suitable for adjusting the width and bevel angle of the grinding surface of more products.

[0019] 4. The system controls the coordinated operation of the "tool holder assembly" and the "left and right spindle box assemblies". With the adjustable angle installation of the left and right spindle boxes, 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 outer diameter due to grinding wheel wear in double-sided grinding machines with external cylindrical grinding wheels. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the dual-station CNC grinding machine of the present invention;

[0022] Figure 2 This is a front view of the dual-station CNC grinding machine structure of the present invention;

[0023] Figure 3 for Figure 2 Section II;

[0024] Figure 4 This is a left view of the structure of the dual-station CNC grinding machine of the present invention;

[0025] Figure 5 for Figure 4 CC cross-section;

[0026] Figure 6 for Figure 4 DD cross-section;

[0027] Figure 7 This is a right view of the structure of the dual-station CNC grinding machine of the present invention;

[0028] Figure 8 for Figure 7 EE cross-section.

[0029] 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-Y-axis base plate; 16-Tool beam; 17-Y-axis linear guide; 18-Z1-axis linear guide; 19-Z1-axis servo motor; 20-Z1-axis coupling; 21-Z1-axis ball screw; 22-Z1-axis screw nut; 23-Z1-axis nut seat; 24-Left spindle box seat; 25-Left spindle box seat adjusting block; 26 27-Left spindle motor; 28-Left spindle drive wheel; 29-Left spindle bearing; 30-Left spindle; 31-Left spindle box; 32-Z2 axis linear guide; 33-Z2 axis servo motor; 34-Z2 axis coupling; 35-Z2 axis ball screw; 36-Z2 axis screw nut; 37-Z2 axis nut seat; 38-Right spindle box seat; 39-Right spindle box seat adjusting block; 40-Right spindle motor; 41-Right spindle drive wheel; 42-Right spindle bearing; 43-Right spindle; 44-Right spindle driven wheel; 45-Right spindle box; 46-Right barrel-shaped grinding wheel; 47-Left barrel-shaped grinding wheel; 48-Workpiece; 49-Fixture; 50-Electrical box; 51-CNC system. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1 to 8The present invention discloses a dual-station CNC grinding machine structure, including a frame 1. An adjustable-angle left spindle housing 24 and a right spindle housing 38 are respectively mounted on opposite sides of the frame 1. A left spindle housing 31 is mounted on the left spindle housing 24, and a Z1-axis servo motor 19 is mounted on the left spindle housing 24. The Z1-axis servo motor 19 is connected to a Z1-axis ball screw 21 via a Z1-axis coupling 20. A Z1-axis nut seat 23 is mounted at the bottom of the left spindle housing 31, and a Z1-axis screw nut 22 connected to the Z1-axis ball screw 21 is mounted on the Z1-axis nut seat 23. The left spindle housing 31... The bottom is connected to the left spindle box 24 via a Z1 axis linear guide 18. A left spindle 29 is installed inside the left spindle box 31, and a left barrel-shaped grinding wheel 47 is mounted at one end of the left spindle 29. A left drive unit for rotating the left barrel-shaped grinding wheel 47 is installed on the top of the left spindle box 31. A right spindle box 45 is mounted on the right spindle box 38, and a Z2 axis servo motor 33 is mounted on the right spindle box 38. The Z2 axis servo motor 33 is connected to a Z2 axis ball screw 35 via a Z2 axis coupling 34. A Z2 axis nut seat 37 is installed at the bottom of the right spindle box 45, and a Z2 axis ball screw is mounted on the Z2 axis. The ball screw 35 is connected to the Z2 axis screw nut 36. The bottom of the right spindle box 45 is connected to the right spindle box base 38 via the Z2 axis linear guide 32. The right spindle 43 is installed inside the right spindle box 45. A right barrel-shaped grinding wheel 46 is installed at one end of the right spindle 43. A right drive device for driving the right barrel-shaped grinding wheel 46 is installed on the top of the right spindle box 45. An X-axis base 2 is installed on the right front side of the frame 1. An X-axis servo motor 3 is installed on the X-axis base 2. The X-axis servo motor 3 is connected to the X-axis ball screw 5 via the X-axis coupling 4. An X-axis nut seat 7 is installed on the X-axis base 2. An X-axis screw nut 6 is connected to the X-axis ball screw 5. A Y-axis machine base 2 is mounted on an X-axis linear guide 8. A Y-axis servo motor 10 is mounted on the Y-axis machine base 9. The Y-axis servo motor 10 is connected to a Y-axis ball screw 12 via a Y-axis coupling 11. A Y-axis base plate 15 is mounted on the Y-axis machine base 9 via a Y-axis linear guide 17. A Y-axis nut seat 13 is mounted on the Y-axis base plate. A Y-axis screw nut 14 connected to the Y-axis ball screw 12 is mounted on the Y-axis nut seat 13. A tool beam 16 is mounted on the Y-axis base plate 15. A fixture 49 is mounted on the tool beam 16. A workpiece 48 is mounted on the fixture 49. During operation, the Z1 axis servo motor 19 drives the left barrel-shaped grinding wheel 47 to move left and right, and the Z2 axis servo motor 33 drives the right barrel-shaped grinding wheel 46 to move left and right. The left and right barrel-shaped grinding wheels move horizontally at an angle to each other. The X-axis servo motor 3 drives the workpiece 48 to move horizontally back and forth, and the Y-axis servo motor 10 drives the workpiece 48 to move vertically up and down, achieving precise machining of the workpiece 48. This process is highly automated, easy to use, provides comprehensive machining, maintains uniform standard quality, and has high production efficiency, offering the following benefits:

[0032] 1. The X, Y, Z1, and Z2 axes of this machine are all driven by absolute servo motors, pushed by high-precision ball screws, and slid by high-precision roller linear guides, which makes adjustment convenient, repeatability accurate, operation stable, and the machined 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.

[0033] 2. This machine adopts a double-barrel type grinding wheel for grinding, which greatly improves the effective utilization rate of the grinding wheel and reduces production costs.

[0034] 3. The two spindle boxes are symmetrically installed with adjustable included angles and equipped with barrel-shaped grinding wheels. The two barrel-shaped grinding wheels are in equal-diameter contact machining, which avoids the problem of inconsistent concave arc and width of the grinding surface caused by the outer diameter of the outer cylindrical grinding wheel decreasing due to wear. During the machining process, the grinding concave surface will not be affected by the wear of the grinding wheel, effectively ensuring the consistency of each product and improving product quality. The barrel-shaped grinding wheel adjustable included angle structure has a high grinding wheel utilization rate, overcoming the disadvantage of excessive residual grinding wheel in traditional double-sided grinding machines with outer cylindrical grinding wheels. This directly reduces production costs and achieves energy-saving goals, and is suitable for adjusting the width and bevel angle of the grinding surface of more products.

[0035] 4. The system controls the coordinated operation of the "tool holder assembly" and the "left and right spindle box assemblies". With the adjustable angle installation of the left and right spindle boxes, 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 outer diameter due to grinding wheel wear in double-sided grinding machines with external cylindrical grinding wheels.

[0036] A left spindle box adjustment block 25 is installed on the left side of the top of the frame 1 to facilitate adjustment of the installation angle of the left spindle box 24.

[0037] A right spindle box adjustment block 39 is installed on the right side of the top of the frame 1 to facilitate adjustment of the installation angle of the right spindle box 38.

[0038] The left drive unit includes a left spindle motor 26 mounted on the top of the left spindle box 31, a left spindle driven wheel 30 mounted on the other end of the left spindle 29, a left spindle motor 26 connected to a left spindle drive wheel 27, and the left spindle driven wheel 30 and the left spindle drive wheel 27 are connected by a left belt drive. The left spindle motor 26 drives the left barrel-shaped grinding wheel 47 to rotate, thereby realizing the processing of the workpiece 48.

[0039] The right drive unit includes a right spindle motor 40 mounted on the top of the right spindle box 45, a right spindle driven wheel 44 mounted on the other end of the right spindle 29, a right spindle driving wheel 41 connected to the right spindle motor 40, and the right spindle driven wheel 44 and the right spindle driving wheel 41 are connected by a right belt drive. The right spindle motor 40 drives the right barrel-shaped grinding wheel 46 to rotate, thereby realizing the processing of the workpiece 48.

[0040] The left spindle housing 31 contains a left spindle bearing 28 for mounting the left spindle 29, which makes the left spindle 29 more stable and its rotation smoother.

[0041] The right spindle housing 45 contains a right spindle bearing 42 for mounting the right spindle 43, making the right spindle 43 more stable and its rotation smoother.

[0042] The left barrel-shaped grinding wheel 47 and the right barrel-shaped grinding wheel 46 are installed at an adjustable angle facing each other on the same horizontal plane. The adjustable angle structure of the barrel-shaped grinding wheel results in high grinding wheel utilization. This overcomes the disadvantage of excessive grinding wheel residue in traditional double-sided grinding machines with external cylindrical grinding wheels, thereby directly reducing production costs and achieving energy-saving goals. It is suitable for adjusting the grinding surface width and bevel angle of more products.

[0043] An electrical box 50 is installed on the top of the frame 1 to facilitate power supply for the dual-station CNC grinding machine.

[0044] The top of the frame 1 is equipped with a CNC system 51, which facilitates the control of the dual-station CNC grinding machine.

[0045] This dual-station CNC grinding machine system is a multi-functional dedicated system that can directly read "DXF" drawings to generate machining programs. It is easy to operate, has the function of connecting with robots, and realizes automated machining operations. It not only reduces the time spent on manual programming, but also produces products with more uniform, smooth, and standardized trajectories processed according to the lines of DXF graphics.

[0046] In addition to manual programming, this dual-station CNC grinding machine system also has the functions of directly reading "DXF" images to generate programs and online robot operation. The robot can load and unload materials, and the system can control the motors of each axis to perform processing according to the program generated by the DXF image.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-station CNC grinding machine structure, characterized in that: The system includes a frame, on which adjustable-angle left and right spindle box seats are respectively mounted on opposite sides. A left spindle box is mounted on the left spindle box seat, and a Z1-axis servo motor is mounted thereon. The Z1-axis servo motor is connected to a Z1-axis ball screw via a Z1-axis coupling. A Z1-axis nut seat is mounted at the bottom of the left spindle box, and a Z1-axis ball screw nut connected to the Z1-axis ball screw is mounted thereon. The bottom of the left spindle box is connected to the left spindle box via a Z1-axis linear guide rail. The left spindle box houses a left spindle, with a left barrel-shaped grinding wheel mounted at one end. A left drive unit for rotating the left barrel-shaped grinding wheel is mounted on the top of the left spindle box. A right spindle box is mounted on the right spindle box, and a Z2-axis servo motor is mounted on the right spindle box. The Z2-axis servo motor is connected to a Z2-axis ball screw via a Z2-axis coupling. A Z2-axis nut seat is mounted at the bottom of the right spindle box, and a Z2-axis ball screw nut connected to the Z2-axis ball screw is mounted on the Z2-axis nut seat. The bottom of the right spindle box is connected to the right spindle box base via a Z2 axis linear guide. A right spindle is installed inside the right spindle box, and a right barrel-shaped grinding wheel is mounted at one end of the right spindle. A right drive device for rotating the right barrel-shaped grinding wheel is installed on the top of the right spindle box. An X-axis base is mounted on the right front side of the frame, and an X-axis servo motor is mounted on the X-axis 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 base, and a connector for the X-axis ball screw is mounted on the X-axis nut seat. The X-axis is connected to a lead screw nut. The X-axis base is mounted with a Y-axis base via an X-axis linear guide. The Y-axis base is mounted with a Y-axis servo motor and a Y-axis linear guide. 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 base plate via a Y-axis linear guide. The Y-axis base plate is mounted with a Y-axis nut seat. The Y-axis nut seat is mounted with a Y-axis lead screw nut connected to the Y-axis ball screw. The Y-axis base plate is mounted with a tool beam. The tool beam is mounted with a fixture. The fixture is mounted with a workpiece.

2. The dual-station CNC grinding machine structure according to claim 1, characterized in that: A left spindle box adjustment block is installed on the left side of the top of the frame.

3. The dual-station CNC grinding machine structure according to claim 1, characterized in that: The right spindle box adjustment block is installed on the right side of the top of the frame.

4. The dual-station CNC grinding machine structure according to claim 1, characterized in that: The left drive device includes a left spindle motor mounted on the top of the left spindle box, a left spindle driven pulley mounted on the other end of the left spindle, a left spindle motor connected to a left spindle drive pulley, and the left spindle driven pulley and the left spindle drive pulley connected by a left belt drive.

5. The dual-station CNC grinding machine structure according to claim 1, characterized in that: The right drive device includes a right spindle motor mounted on the top of the right spindle box, a right spindle driven pulley mounted on the other end of the right spindle, a right spindle motor connected to a right spindle drive pulley, and the right spindle driven pulley and the right spindle drive pulley connected by a right belt drive.

6. The dual-station CNC grinding machine structure according to claim 1, characterized in that: The left spindle housing contains a left spindle bearing for mounting the left spindle.

7. The dual-station CNC grinding machine structure according to claim 1, characterized in that: The right spindle housing contains a right spindle bearing for mounting the right spindle.

8. The dual-station CNC grinding machine structure according to claim 1, characterized in that: The left barrel-shaped grinding wheel and the right barrel-shaped grinding wheel are installed at an adjustable angle, facing each other at the same horizontal level.

9. The dual-station CNC grinding machine structure according to claim 1, characterized in that: An electrical box is mounted on the top of the frame.

10. The dual-station CNC grinding machine structure according to claim 1, characterized in that: A numerical control system is installed on the top of the frame.

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