Grinding wheel dressing tooling for broaching machine

Abstract

The present invention relates to a tool for dressing grinding wheels of a grinding and broaching machine, and relates to the field of grinding technology. The tool for dressing grinding wheels of a grinding and broaching machine includes a tool mounting frame, a tool rotating device, a traction feeding device, a cutting sensing device and a cutting energy storage device. The tool mounting frame is installed on the broach transverse movement device, the tool rotating device is rotatably installed on the tool mounting frame, the traction feeding device is slidably installed on the tool rotating device, the cutting sensing device includes a cutting block, a friction active plate and a friction reference plate, the friction reference plate is installed on the tool rotating device, the friction active plate is rotatably installed on the traction feeding device, the cutting block is slidably installed on the traction feeding device, the cutting block pushes the friction active plate close to the friction reference plate and rubs against the friction reference plate, the cutting energy storage device is installed on the traction feeding device, the cutting energy storage device is transmission-connected to the traction feeding device, and the cutting block is slidably installed on the traction slider to facilitate grinding wheel dressing.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a tool for dressing a grinding wheel of a broach grinding machine. Background Art

[0002] ‌Broach dressing‌ is an important step to ensure that the broach remains in good condition during the processing by using a formed grinding wheel correction tool. It mainly includes the dressing of the grinding wheel and the adjustment of the broach assembly. Grinding wheel dressing is a key step in sharpening keyway broaches, flat broaches and spline broaches to ensure processing quality. The grinding wheel needs to be sharpened after working for a period of time to maintain the shape of the grinding wheel and ensure the grinding accuracy of the broach.

[0003] However, the existing grinding wheel is difficult to sharpen, the grinding wheel needs to be replaced frequently, and the cost is high. Summary of the Invention

[0004] In order to overcome the technical defects of the prior art, the present invention provides a grinding wheel dressing tool for a broach grinding machine, which is convenient for grinding wheel dressing.

[0005] The technical solution adopted by the present invention is:

[0006] The tooling for dressing the grinding wheel of a broaching machine is installed on the broaching machine, and the broaching machine includes a broaching transverse movement device, a broaching rotation device and a grinding device. The broaching rotation device includes a broaching rotation motor and two broaching rotation bearings. The broach is installed between the two broaching rotation bearings, and the broach is connected to the broaching rotation motor by transmission. The tooling for dressing the grinding wheel of the broaching machine includes a tooling mounting frame, a tooling rotation device, a traction feeding device, a cutting sensing device and a cutting energy storage device. The tooling mounting frame is installed on the broaching transverse movement device, and the tooling rotation device is rotatably mounted on the tooling mounting frame through a pin shaft. The traction feeding device is slidably mounted on the tooling rotation device. The cutting sensing device includes a cutting block, a friction active plate and a friction reference plate. The friction reference The plate is installed on the tooling rotating device, the friction active plate is slidably installed on the traction feeding device, the cutting block is slidably installed on the traction feeding device, the cutting block is transmission-connected to the friction active plate, the cutting block pushes the friction active plate close to the friction reference plate and rubs against the friction reference plate, the cutting energy storage device is installed on the traction feeding device, the cutting energy storage device is transmission-connected to the traction feeding device, the traction feeding device includes a traction gear and a traction slider, the traction slider is slidably installed on the tooling rotating device, the traction gear is rotatably installed in the tooling rotating device, the traction gear is meshed with the traction slider, the friction active plate is slidably installed on the traction slider, and the cutting block is slidably installed on the traction slider.

[0007] Preferably, the broach transverse movement device includes a broach transverse movement frame, a broach transverse movement motor, a broach transverse movement screw, a broach transverse movement plate and a broach transverse movement slider. The broach transverse movement slider is slidably mounted on the broach transverse movement frame, the broach transverse movement motor is mounted on the broach transverse movement frame, the broach transverse movement screw is mounted on the output end of the broach transverse movement motor, the broach transverse movement screw and the broach transverse movement slider are connected through a threaded pair, the broach transverse movement plate is mounted on the broach transverse movement block, and the broach rotation device is mounted on the broach transverse movement plate.

[0008] Preferably, a grinding wheel is installed on the grinding device, and the grinding device includes a grinding sliding base, a grinding sliding frame, a grinding rotating motor, a grinding motor and a grinding lifting motor. The grinding sliding frame slides along the grinding sliding base, and the sliding direction of the grinding sliding frame points to the broach transverse movement device. The grinding rotating motor is installed on the grinding sliding frame so as to be able to be lifted and slid by a slider. The grinding lifting motor is installed on the grinding sliding frame. The output end of the grinding lifting motor is connected to the grinding rotating motor through a threaded pair. The grinding motor is installed at the output end of the grinding rotating motor, and the grinding wheel is installed at the output end of the grinding motor.

[0009] Preferably, the tool mounting frame is mounted on the broach transverse movement device by screws.

[0010] Preferably, the tool rotating device is installed on the tool mounting frame through a pin.

[0011] Preferably, the cutting energy storage device includes an energy storage wheel, an energy storage gravity block and an energy storage traction rope, the traction gear is provided with an energy storage rod outside, the energy storage wheel is installed on the energy storage rod, the energy storage gravity block is installed at the end of the energy storage traction rope, and the energy storage traction rope is wound around the energy storage wheel.

[0012] Preferably, the cutting block is provided with a pushing bevel, and the friction active plate is provided with an extrusion bevel adapted to the pushing bevel, and the pushing bevel pushes the extrusion bevel and then pushes the friction active plate to approach and rub against the friction reference plate.

[0013] Preferably, centering springs are provided on both the upper and lower sides of the pushing inclined surface of the cutting block, wherein one end of the centering spring away from the pushing inclined surface presses against the traction slider, and a pressure plate for pressing the other centering spring is also installed on the traction slider.

[0014] The beneficial effects of the present invention are:

[0015] The broach rotating device includes a broach rotating motor and two broach rotating bearings. The broach is installed between the two broach rotating bearings. The broach is connected to the broach rotating motor. The broach rotating device is used to clamp the broach and drive the broach to rotate. The broach transverse movement device is used to drive the broach rotating device to move transversely, and then grind each cutting tooth of the broach one by one. When grinding the broach, the broach transverse movement device controls the transverse position of the broach rotating device, and the broach rotating device drives the broach to rotate, so that the grinding device grinds the annular cutting teeth on the broach. After the cutting teeth are ground, the broach transverse movement device drives the broach rotating device to move transversely the distance between adjacent cutting teeth, so as to facilitate the next grinding of the cutting tooth.

[0016] The tool mounting frame is installed on the broach transverse moving device, and the broach transverse moving device drives the tool mounting frame to move transversely, so that the tool mounting frame is close to the grinding device to realize the grinding of the grinding device. The tool rotating device is rotatably mounted on the tool mounting frame through a pin shaft. When the tool rotating device needs to be fixed to the tool mounting frame, the preset screws on the tool rotating device rotate to support the tool mounting frame, thereby fixing the tool rotating device and the tool mounting frame to each other. The traction feeding device is slidably mounted on the tool rotating device. The cutting sensing device includes a cutting block, a friction active plate and a friction reference plate. The tool rotating device is used to adjust the angle of the cutting block, thereby adjusting the grinding angle of the grinding wheel. The traction feeding device drives the cutting The cutting block moves to grind the grinding wheel on the grinding device. The friction reference plate is installed on the tooling rotating device, the friction active plate is slidably installed on the traction feed device, and the cutting block is slidably installed on the traction feed device. The cutting block is transmission-connected with the friction active plate. When the cutting block slides along the traction feed device, the cutting block pushes the friction active plate to slide outward along the traction feed device, thereby causing the cutting block to push the friction active plate close to the friction reference plate and rub against the friction reference plate, thereby preventing the traction feed device from feeding. That is to say, when the cutting block and the grinding wheel are grinding, the friction between the friction active plate and the friction reference plate limits the feed of the cutting block, so that the cutting block steadily cuts the grinding wheel.

[0017] The cutting energy storage device is installed on the traction feed device, and the cutting energy storage device is transmission-connected to the traction feed device, thereby driving the traction feed device to feed. The traction feed device includes a traction gear and a traction slider. The traction slider is slidably installed on the tooling rotating device. The traction gear is rotatably installed in the tooling rotating device. The traction gear is meshed with the traction slider. The friction active plate is slidably installed on the traction slider. The cutting block is slidably installed on the traction slider. When the cutting block is cutting, the cutting block slides along the traction slider, so that the friction active plate approaches the friction reference plate and rubs against the friction reference plate, thereby preventing the friction active plate and the traction slider from sliding, thereby preventing the cutting block from feeding too fast and causing damage to the grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic cross-sectional view of the principle of the present invention.

[0020] Figure 3 This is a schematic diagram of the installation position of the present invention.

[0021] Figure 4 It is a structural diagram of the traction feeding device.

[0022] Description of reference numerals:

[0023] 1. Broach transverse movement device; 11. Broach transverse movement frame; 12. Broach transverse movement plate; 13. Broach transverse movement slide;

[0024] 2. Grinding device; 21. Grinding wheel; 22. Grinding slide; 23. Grinding rotary motor; 24. Grinding motor; 25. Grinding lifting motor; 26. Grinding slide base;

[0025] 3. Grinding wheel dressing tool for broaching machine; 31. Tool mounting frame; 32. Tool rotation device; 33. Traction feed device; 331. Traction gear; 332. Traction slide; 333. Energy storage rod; 334. Pressure plate; 34. Cutting sensing device; 341. Cutting block; 3411. Centering spring; 3412. Pushing inclined plane; 342. Friction active plate; 3421. Extrusion inclined plane; 343. Friction reference plate; 35. Cutting energy storage device; 351. Energy storage wheel; 352. Energy storage gravity block; 353. Energy storage traction rope;

[0026] 4. Broach rotating device; 41. Broach rotating motor; 42. Broach rotating bearing. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figure 1 — Figure 4As shown, this embodiment provides a tool for dressing the grinding wheel of a broach machine, which is installed on the broach machine. The broach machine includes a broach transverse movement device 1, a broach rotation device 4 and a grinding device 2. The broach rotation device 4 includes a broach rotation motor 41 and two broach rotation bearings 42. The broach is installed between the two broach rotation bearings 42. The broach is connected to the broach rotation motor 41 by transmission. The broach rotation device 4 is used to clamp the broach and drive the broach to rotate. The broach transverse movement device 1 is used to drive the broach rotation device 4 to move transversely, and then grind each cutting tooth of the broach one by one. When grinding the broach, the broach transverse movement device 1 controls the lateral position of the broach rotation device 4, and the broach rotation device 4 drives the broach to rotate, so that the grinding device 2 grinds the annular cutting teeth on the broach. After the cutting teeth are ground, the broach transverse movement device 1 drives the broach rotation device 4 to move transversely the distance between adjacent cutting teeth, so as to continue grinding the next cutting tooth.

[0029] The tooling 3 for dressing the grinding wheel of the grinding and broaching machine includes a tooling mounting frame 31, a tooling rotating device 32, a traction feeding device 33, a cutting sensing device 34 and a cutting energy storage device 35. The tooling mounting frame 31 is installed on the broaching transverse movement device 1. The broaching transverse movement device 1 drives the tooling mounting frame 31 to move transversely, so that the tooling mounting frame 31 is close to the grinding device 2 to realize the grinding of the grinding device 2. The tooling rotating device 32 is rotatably mounted on the tooling mounting frame 31 through a pin shaft. When the tooling rotating device 32 needs to be rotated with the tooling When the mounting frame 31 is fixed, the preset screws on the tool rotating device 32 rotate to support the tool mounting frame 31, thereby fixing the tool rotating device 32 and the tool mounting frame 31 to each other. The traction feeding device 33 is slidably mounted on the tool rotating device 32. The cutting sensing device 34 includes a cutting block 341, a friction active plate 342 and a friction reference plate 343. The tool rotating device 32 is used to adjust the angle of the cutting block 341, thereby adjusting the grinding angle of the grinding wheel 21. The traction feeding device 33 is provided with The movable cutting block 341 moves to grind the grinding wheel 21 on the grinding device 2. The friction reference plate 343 is installed on the tooling rotating device 32. The friction active plate 342 is slidably installed on the traction feeding device 33. The cutting block 341 is slidably installed on the traction feeding device 33. The cutting block 341 is transmission-connected to the friction active plate 342. When the cutting block 341 slides along the traction feeding device 33, the cutting block 341 pushes the friction active plate 342 to slide outward along the traction feeding device 33. As a result, the cutting block 341 pushes the friction active plate 342 close to the friction reference plate 343 and rubs against the friction reference plate 343. The friction active plate 342 and the friction reference plate 343 are both provided with commercially available friction plates at adjacent positions, thereby preventing the feeding of the traction feeding device 33. That is to say, when the cutting block 341 is grinding with the grinding wheel 21, the friction between the friction active plate 342 and the friction reference plate 343 limits the feeding of the cutting block 341, so that the cutting block 341 can steadily cut the grinding wheel 21.

[0030] It is worth noting that if the friction active plate 342 and the friction reference plate 343 are not provided, when the cutting block 341 and the grinding wheel 21 are grinding, the feed force of the cutting block 341 will need to be completely borne by the grinding wheel 21, and the grinding wheel 21 may break. Therefore, the friction active plate 342 and the friction reference plate 343 must be designed for joint use.

[0031] The cutting energy storage device 35 is installed on the traction feeding device 33, and the cutting energy storage device 35 is transmission-connected to the traction feeding device 33, thereby driving the traction feeding device 33 to feed. The traction feeding device 33 includes a traction gear 331 and a traction slider 332. The traction slider 332 is slidably installed on the tooling rotating device 32. The traction gear 331 is rotatably installed in the tooling rotating device 32. The traction gear 331 is meshed with the traction slider 332. The friction active plate 342 is slidably installed on the traction slider 332. The cutting block 341 is slidably installed on the traction slider 332. When the cutting block 341 cuts, the cutting block 341 slides along the traction slider 332, so that the friction active plate 342 approaches the friction reference plate 343 and rubs against the friction reference plate 343, thereby preventing the friction active plate 342 and the traction slider 332 from sliding, thereby preventing the cutting block 341 from feeding too fast and causing damage to the grinding device 2.

[0032] Specifically, the broach transverse movement device 1 includes a broach transverse movement frame 11, a broach transverse movement motor, a broach transverse movement screw, a broach transverse movement plate 12 and a broach transverse movement slider 13. The broach transverse movement slider 13 is slidably installed on the broach transverse movement frame 11, the broach transverse movement motor is installed on the broach transverse movement frame 11, the broach transverse movement screw is installed on the output end of the broach transverse movement motor, the broach transverse movement screw and the broach transverse movement slider 13 are connected through a threaded pair, the broach transverse movement plate 12 is installed on the broach transverse movement slider 13, the broach rotation device 4 is installed on the broach transverse movement plate 12, and the broach transverse movement motor pulls the broach transverse movement plate 12 to move transversely, thereby feeding the cutting block 341.

[0033] Specifically, a grinding wheel 21 is mounted on the grinding device 2, and a cutting block 341 is used to grind the grinding wheel 21. Specifically, the grinding device 2 includes a grinding sliding base 26, a grinding sliding frame 22, a grinding rotary motor 23, a grinding motor 24, and a grinding lifting motor 25. The grinding sliding frame 22 slides along the grinding sliding base 26, and the sliding direction of the grinding sliding frame 22 points to the broaching transverse movement device 1. The grinding sliding frame 22 is realized by a commercially available motor screw mechanism on the grinding sliding base 26. This is a prior art and will not be described in detail here. The grinding rotary motor 23 can be raised and lowered by a slider. The sliding part is installed on the grinding slide frame 22, and the grinding lifting motor 25 is installed on the grinding slide frame 22. The output end of the grinding lifting motor 25 is connected to the grinding rotating motor 23 through a threaded pair transmission, thereby realizing the lifting and lowering of the grinding rotating motor 23. The grinding motor 24 is installed at the output end of the grinding rotating motor 23, thereby realizing the angle adjustment of the grinding motor 24. The grinding wheel 21 is installed at the output end of the grinding motor 24, thereby realizing the rotation of the grinding wheel 21. The rotation of the grinding wheel 21 realizes the broach cutting and realizes the grinding of the grinding wheel 21 on the cutting block 341 when the grinding wheel 21 needs to be ground.

[0034] Specifically, the tool mounting frame 31 is mounted on the broach transverse movement device 1 by screws, and the tool rotating device 32 is mounted on the tool mounting frame 31 by a pin shaft so that the cutting block 341 changes the feeding direction of the cutting block 341 to adapt to the cross-sectional profile of the grinding wheel 21.

[0035] Specifically, the cutting energy storage device 35 includes an energy storage wheel 351, an energy storage gravity block 352 and an energy storage traction rope 353. The traction gear 331 is provided with an energy storage rod 333. The energy storage rod 333 is installed on the tooling rotating device 32 through a sleeve or a bearing. The energy storage wheel 351 is installed on the energy storage rod 333. The energy storage gravity block 352 is installed at the end of the energy storage traction rope 353. The energy storage traction rope 353 is wound around the energy storage wheel 351. Under the action of gravity, the energy storage gravity block 352 pulls the energy storage wheel 351 to rotate with a constant tension, thereby causing the traction slider 332 to move, and thereby causing the cutting block 341 to feed.

[0036] Specifically, the cutting block 341 is provided with a pushing inclined surface 3412, and the friction active plate 342 is provided with an extrusion inclined surface 3421 adapted to the pushing inclined surface 3412. The pushing inclined surface 3412 pushes the extrusion inclined surface 3421 and then pushes the friction active plate 342 close to and rubs against the friction reference plate 343. The upper and lower sides of the pushing inclined surface 3412 of the cutting block 341 are provided with centering springs 3411. The end of one of the centering springs 3411 away from the pushing inclined surface 3412 presses against the traction slider 332. In order to press the other centering spring 3411, a spring 3411 is also installed on the traction slider 332 to press the other centering spring 3411. The pressure plate 334 is used to install the cutting block 341 and the two centering springs 3411. The elasticity of the two centering springs 3411 facilitates the resetting of the cutting block 341. Simply put, when the cutting block 341 cuts the grinding wheel 21, the grinding wheel 21 drives the cutting block 341 to move, so that the friction active plate 342 approaches and rubs against the friction reference plate 343, automatically controlling the feed speed of the cutting block 341 to prevent the grinding wheel 21 from breaking or being damaged. After the cutting block 341 cuts the grinding wheel 21 and approaches the position, the pressure between the friction active plate 342 and the friction reference plate 343 decreases, and the friction force decreases, so that the cutting block 341 continues to feed.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. The grinding wheel dressing tool for the grinding and broaching machine is installed on the grinding and broaching machine, which is characterized by: The broach grinding machine includes a broach transverse movement device, a broach rotation device and a grinding device. The broach rotation device includes a broach rotation motor and two broach rotation bearings. The broach is installed between the two broach rotation bearings. The broach is connected to the broach rotation motor by transmission. The grinding wheel dressing tool of the broach grinding machine includes a tool mounting frame, a tool rotation device, a traction feeding device, a cutting sensing device and a cutting energy storage device. The tool mounting frame is installed on the broach transverse movement device. The tool rotation device is rotatably installed on the tool mounting frame through a pin shaft. The traction feeding device is slidably installed on the tool rotation device. The cutting sensing device includes a cutting block, a friction active plate and a friction reference plate. The friction reference plate is installed on the tool rotation device The friction active plate is slidably mounted on the traction feed device, the cutting block is slidably mounted on the traction feed device, the cutting block is transmission-connected to the friction active plate, the cutting block pushes the friction active plate close to the friction reference plate and rubs against the friction reference plate, the cutting energy storage device is mounted on the traction feed device, the cutting energy storage device is transmission-connected to the traction feed device, the traction feed device includes a traction gear and a traction slider, the traction slider is slidably mounted on the tooling rotating device, the traction gear is rotatably mounted in the tooling rotating device, the traction gear is meshed with the traction slider, the friction active plate is slidably mounted on the traction slider, and the cutting block is slidably mounted on the traction slider.

2. The grinding wheel dressing tool for a broach grinding machine according to claim 1, characterized in that: The broaching device includes a broaching frame, a broaching motor, a broaching screw, a broaching plate and a broaching slider. The broaching slider is slidably mounted on the broaching frame, the broaching motor is mounted on the broaching frame, the broaching screw is mounted on the output end of the broaching motor, the broaching screw is connected to the broaching slider via a threaded pair, the broaching plate is mounted on the broaching slider, and the broaching rotating device is mounted on the broaching plate.

3. The tooling for dressing the grinding wheel of a broach grinding machine according to claim 1, characterized in that: A grinding wheel is installed on the grinding device, and the grinding device includes a grinding sliding base, a grinding sliding frame, a grinding rotating motor, a grinding motor and a grinding lifting motor. The grinding sliding frame slides along the grinding sliding base, and the sliding direction of the grinding sliding frame points to the broach transverse movement device. The grinding rotating motor is installed on the grinding sliding frame so as to be able to be lifted and slid by a slider. The grinding lifting motor is installed on the grinding sliding frame. The output end of the grinding lifting motor is connected to the grinding rotating motor through a threaded pair. The grinding motor is installed at the output end of the grinding rotating motor, and the grinding wheel is installed at the output end of the grinding motor.

4. The tooling for dressing the grinding wheel of a broach grinding machine according to claim 1, characterized in that: The tooling mounting frame is mounted on the broach transverse movement device by means of screws.

5. The tooling for dressing the grinding wheel of a broach grinding machine according to claim 1, characterized in that: The cutting energy storage device includes an energy storage wheel, an energy storage gravity block and an energy storage traction rope. An energy storage rod is provided outside the traction gear. The energy storage wheel is installed on the energy storage rod. The energy storage gravity block is installed at the end of the energy storage traction rope. The energy storage traction rope is wound around the energy storage wheel.

6. The tooling for dressing the grinding wheel of a broach grinding machine according to claim 1, characterized in that: The cutting block is provided with a pushing inclined surface, and the friction active plate is provided with an extrusion inclined surface adapted to the pushing inclined surface. The pushing inclined surface pushes the extrusion inclined surface and then pushes the friction active plate to approach and rub against the friction reference plate.

7. The tooling for dressing the grinding wheel of a broaching machine according to claim 6, characterized in that: Centering springs are provided on both sides of the upper and lower pushing slopes of the cutting block, wherein one end of the centering springs away from the pushing slopes presses against the traction slider, and a pressure plate for pressing the other centering spring is also installed on the traction slider.

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