Tool for dressing grinding wheel of broach grinding machine

Abstract

The invention relates to a tool for dressing a grinding wheel of a broach grinding machine, and relates to the technical field of grinding, the tool for dressing the grinding wheel of the broach grinding machine comprises a tool mounting rack, a tool rotating device, a traction feeding device, a cutting sensing device and a cutting energy storage device, the tool mounting rack is mounted on a broach transverse moving device, the tool rotating device is rotatably mounted on the tool mounting rack, and the traction feeding device is mounted on the tool mounting rack. The traction feeding device is installed on the tool rotating device in a sliding mode, the cutting sensing device comprises a cutting block, a friction driving piece and a friction reference piece, the friction reference piece is installed on the tool rotating device, the friction driving piece is installed on the traction feeding device in a rotating mode, and the cutting block is installed on the traction feeding device in a sliding mode. The cutting block pushes the friction driving piece to be close to the friction reference piece and generate friction with the friction reference piece, the cutting energy storage device is installed on the traction feeding device, the cutting energy storage device is in transmission connection with the traction feeding device, the cutting block is installed on the traction sliding block in a sliding mode, and grinding wheel dressing is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding, and particularly to a grinding wheel dressing tooling for a broach grinding machine. Background Art

[0002] Broach dressing is an important step in using a forming grinding wheel dressing tooling for dressing to ensure that the broach maintains a good state during the machining process, mainly including the dressing of the grinding wheel and the adjustment of the broach assembly. The dressing of the grinding wheel is a key step when grinding keyway broaches, flat broaches, and spline broaches to ensure the machining quality. After the grinding wheel has worked for a period of time, it needs to be dressed to maintain the shape of the grinding wheel and ensure the broach grinding accuracy.

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

[0004] To overcome the technical defects existing in the prior art, the present invention provides a grinding wheel dressing tooling for a broach grinding machine, which is convenient for dressing the grinding wheel.

[0005] The technical solution adopted by the present invention is as follows: A grinding wheel dressing tooling for a broach grinding machine is installed on the broach grinding machine. 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, and the broach is in transmission connection with the broach rotation motor. The grinding wheel dressing tooling for the broach grinding machine includes a tooling installation frame, a tooling rotation device, a traction feeding device, a cutting perception device, and a cutting energy storage device. The tooling installation frame is installed on the broach transverse movement device. The tooling rotation device is rotatably installed on the tooling installation frame through a pin shaft. The traction feeding device is slidably installed on the tooling rotation device. The cutting perception device includes a cutting block, a friction driving piece, and a friction reference piece. The friction reference piece is installed on the tooling rotation device. The friction driving piece is slidably installed on the traction feeding device. The cutting block is slidably installed on the traction feeding device. The cutting block is in transmission connection with the friction driving piece. The cutting block pushes the friction driving piece to approach the friction reference piece and generates friction with the friction reference piece. The cutting energy storage device is installed on the traction feeding device. The cutting energy storage device is in transmission connection with 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 rotation device. The traction gear is rotatably installed inside the tooling rotation device. The traction gear is engaged with the traction slider. The friction driving piece is slidably installed on the traction slider. The cutting block is slidably installed on the traction slider.

[0006] Preferably, the broach transverse movement device includes a broach transverse movement frame, a broach transverse movement motor, a broach transverse movement lead screw, a broach transverse movement plate and a broach transverse movement slider. The broach transverse movement slider is slidably installed on the broach transverse movement frame. The broach transverse movement motor is installed on the broach transverse movement frame. The broach transverse movement lead screw is installed at the output end of the broach transverse movement motor. The broach transverse movement lead screw is in threaded transmission connection with the broach transverse movement slider through a thread pair. The broach transverse movement plate is installed on the broach transverse movement block. The broach rotation device is installed on the broach transverse movement plate.

[0007] Preferably, a grinding wheel is installed on the grinding device. The grinding device includes a grinding sliding base, a grinding sliding frame, a grinding rotation motor, a grinding motor and a grinding lifting motor. The grinding sliding frame slides along the grinding sliding base. The sliding direction of the grinding sliding frame points to the broach transverse movement device. The grinding rotation motor is slidably installed on the grinding sliding frame through a slider and can be lifted. The grinding lifting motor is installed on the grinding sliding frame. The output end of the grinding lifting motor is in threaded transmission connection with the grinding rotation motor through a thread pair. The grinding motor is installed at the output end of the grinding rotation motor. The grinding wheel is installed at the output end of the grinding motor.

[0008] Preferably, the tooling installation frame is installed on the broach transverse movement device by screws.

[0009] Preferably, the tooling rotation device is installed on the tooling installation frame by a pin shaft.

[0010] Preferably, 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 arranged 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.

[0011] Preferably, a pushing inclined surface is provided on the cutting block. An extrusion inclined surface adapted to the pushing inclined surface is provided on the friction driving piece. The pushing inclined surface pushes the extrusion inclined surface, and then pushes the friction driving piece to approach and rub against the friction reference piece.

[0012] Preferably, centering springs are provided on both the upper and lower sides of the pushing inclined surface of the cutting block. One end of one of the centering springs away from the pushing inclined surface abuts against the traction slider. A pressing plate for pressing the other centering spring is also installed on the traction slider.

[0013] The beneficial effects of the present invention are: The broach rotating device includes a broach rotating motor and two broach rotating bearings. The broach is installed between the two broach rotating bearings and is in transmission connection with 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, so as to 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 by the pitch of adjacent cutting teeth, facilitating the continuous grinding of the next cutting tooth.

[0014] The tooling mounting frame is installed on the broach transverse movement device. The broach transverse movement device drives the tooling mounting frame to move transversely, so that the tooling mounting frame approaches the grinding device to realize the grinding of the grinding device. The tooling rotating device is rotatably installed on the tooling mounting frame through a pin shaft. When the tooling rotating device needs to be fixed to the tooling mounting frame, the preset screw on the tooling rotating device rotates and presses against the tooling mounting frame, thereby fixing the tooling rotating device and the tooling mounting frame to each other. The traction feeding device is slidably installed on the tooling rotating device. The cutting perception device includes a cutting block, a friction driving piece and a friction reference piece. The tooling rotating device is used to adjust the angle of the cutting block, so as to adjust the grinding angle of the grinding wheel. The traction feeding device drives the cutting block to move, thereby realizing the grinding of the grinding wheel on the grinding device. The friction reference piece is installed on the tooling rotating device, the friction driving piece is slidably installed on the traction feeding device, the cutting block is slidably installed on the traction feeding device, and the cutting block is in transmission connection with the friction driving piece. When the cutting block slides along the traction feeding device, the cutting block pushes the friction driving piece to slide outward along the traction feeding device, so that the cutting block pushes the friction driving piece to approach the friction reference piece and rubs against the friction reference piece, thereby preventing the feeding of the traction feeding device. That is to say, when the cutting block grinds the grinding wheel, due to the friction between the friction driving piece and the friction reference piece, the feeding of the cutting block is restricted, so that the cutting block steadily cuts the grinding wheel.

[0015] The cutting energy storage device is installed on the traction feeding device and is in transmission connection with the traction feeding device to drive the traction feeding device to feed. 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 meshes with the traction slider, the friction driving piece is slidably installed on the traction slider, and the cutting block is slidably installed on the traction slider. When the cutting block cuts, the cutting block slides along the traction slider, so that the friction driving piece approaches the friction reference piece and rubs against the friction reference piece, preventing the friction driving piece and the traction slider from sliding and preventing the cutting block from feeding too fast and damaging the grinding device. Description of the Drawings

[0016] Figure 1 This is a schematic structural diagram of the present invention.

[0017] Figure 2 This is a schematic sectional view of the principle of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation position of the present invention.

[0019] Figure 4 This is a schematic structural diagram of the traction and feeding device.

[0020] Explanation of reference numerals in the drawings: 1. Broach transverse movement device; 11. Broach transverse movement frame; 12. Broach transverse movement plate; 13. Broach transverse movement slider; 2. Grinding device; 21. Grinding wheel; 22. Grinding sliding frame; 23. Grinding rotation motor; 24. Grinding motor; 25. Grinding lifting motor; 26. Grinding sliding base; 3. Grinding wheel dressing tool for broach grinding machine; 31. Tooling installation frame; 32. Tooling rotation device; 33. Traction and feeding device; 331. Traction gear; 332. Traction slider; 333. Energy storage rod; 334. Pressure plate; 34. Cutting perception device; 341. Cutting block; 3411. Centering spring; 3412. Pushing inclined surface; 342. Friction driving piece; 3421. Extrusion inclined surface; 343. Friction reference piece; 35. Cutting energy storage device; 351. Energy storage wheel; 352. Energy storage gravity block; 353. Energy storage traction rope; 4. Broach rotation device; 41. Broach rotation motor; 42. Broach rotation bearing. Detailed implementation manners

[0021] The present invention will be further described below with reference to the accompanying drawings: As Figure 1 — Figure 4 shown, this embodiment provides a grinding wheel dressing tool for a broach grinding machine, which is installed on the broach grinding machine. The broach grinding 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, and the broach is in transmission connection with the broach rotation motor 41. 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, so as to grind each cutting tooth of the broach one by one. When grinding the broach, the broach transverse movement device 1 controls the transverse 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 by the pitch of adjacent cutting teeth, so as to facilitate the continuous grinding of the next cutting tooth.

[0022] 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 moving device 1. The broaching transverse moving 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 achieve the grinding of the grinding device 2. The tooling rotating device 32 is rotatably installed on the tooling mounting frame 31 through a pin shaft. When the mounting frame 31 is fixed, the preset screws on the tooling rotating device 32 rotate to support the tooling mounting frame 31, so that the tooling rotating device 32 and the tooling mounting frame 31 are fixed to each other, and the traction feeding device 33 is slidably installed on the tooling 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 tooling 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 with 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. Thereby, the cutting block 341 pushes the friction active plate 342 to approach 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 steadily cuts the grinding wheel 21.

[0023] 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.

[0024] The cutting energy storage device 35 is installed on the traction feeding device 33. The cutting energy storage device 35 is in transmission connection with 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 rotation device 32. The traction gear 331 is rotatably installed in the tooling rotation device 32. The traction gear 331 meshes with the traction slider 332. The friction driving 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, causing the friction driving plate 342 to approach the friction reference plate 343 and friction with the friction reference plate 343, preventing the friction driving plate 342 and the traction slider 332 from sliding, and preventing the cutting block 341 from feeding too fast and damaging the grinding device 2.

[0025] Specifically, the broach transverse movement device 1 includes a broach transverse movement frame 11, a broach transverse movement motor, a broach transverse movement lead 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 lead screw is installed at the output end of the broach transverse movement motor. The broach transverse movement lead screw is in transmission connection with the broach transverse movement slider 13 through a screw 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. The broach transverse movement motor pulls the broach transverse movement plate 12 to move transversely, thereby causing the cutting block 341 to feed.

[0026] Specifically, a grinding wheel 21 is installed on the grinding device 2. The 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 rotation motor 23, a grinding motor 24 and a grinding lifting motor 25. The grinding sliding frame 22 slides along the grinding sliding base 26. The sliding direction of the grinding sliding frame 22 points to the broach transverse movement device 1. The grinding sliding frame 22 realizes sliding on the grinding sliding base 26 through a commercially available motor lead screw mechanism, which is the prior art and will not be elaborated here. The grinding rotation motor 23 is installed on the grinding sliding frame 22 through a slider and can be lifted and lowered. The grinding lifting motor 25 is installed on the grinding sliding frame 22. The output end of the grinding lifting motor 25 is in transmission connection with the grinding rotation motor 23 through a screw pair, thereby realizing the lifting of the grinding rotation motor 23. The grinding motor 24 is installed at the output end of the grinding rotation 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 polished.

[0027] Specifically, the tooling installation rack 31 is installed on the broach transverse movement device 1 by screws, and the tooling rotation device 32 is installed on the tooling installation rack 31 through a pin shaft, so as to change the feeding movement direction of the cutting block 341, and thus adapt to the cross-sectional profile of the grinding wheel 21.

[0028] 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. An energy storage rod 333 is arranged outside the traction gear 331. The energy storage rod 333 is installed on the tooling rotation device 32 through a bushing 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. The energy storage gravity block 352 drives the energy storage wheel 351 to rotate with a constant tension under the action of gravity, so as to make the traction slider 332 move, and further make the cutting block 341 feed.

[0029] Specifically, a pushing inclined surface 3412 is provided on the cutting block 341, and an extrusion inclined surface 3421 adapted to the pushing inclined surface 3412 is provided on the friction driving piece 342. The pushing inclined surface 3412 pushes the extrusion inclined surface 3421, and then pushes the friction driving piece 342 to approach and rub against the friction reference piece 343. Centering springs 3411 are provided on both the upper and lower sides of the pushing inclined surface 3412 of the cutting block 341. One end of one centering spring 3411 away from the pushing inclined surface 3412 abuts against the traction slider 332. In order to press the other centering spring 3411, a pressing plate 334 for pressing the other centering spring 3411 is further installed on the traction slider 332, so as to realize the installation of the cutting block 341 and the two centering springs 3411. The elasticity of the two centering springs 3411 facilitates the reset of the cutting block 341. Briefly, 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 driving piece 342 approaches and rubs against the friction reference piece 343, automatically controlling the feeding speed of the cutting block 341 and preventing the grinding wheel 21 from breaking or being damaged. After the cutting block 341 approaches the end of cutting the grinding wheel 21, the pressure between the friction driving piece 342 and the friction reference piece 343 decreases, and the friction force decreases, so that the cutting block 341 continues to feed.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. The dressing tool for the grinding wheel of the broach grinding machine is installed on the broach grinding machine, and is characterized in that, 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, and the broach is in transmission connection with the broach rotation motor. The broach grinding machine dressing grinding wheel tooling includes a tooling mounting frame, a tooling rotation device, a traction feeding device, a cutting perception device, and a cutting energy storage device. The tooling mounting frame is installed on the broach transverse movement device. The tooling rotation device is rotatably installed on the tooling mounting frame through a pin shaft. The traction feeding device is slidably installed on the tooling rotation device. The cutting perception device includes a cutting block, a friction driving piece, and a friction reference piece. The friction reference piece is installed on the tooling rotation device. The friction driving piece is slidably installed on the traction feeding device. The cutting block is slidably installed on the traction feeding device. The cutting block is in transmission connection with the friction driving piece. The cutting block pushes the friction driving piece to approach the friction reference piece and generates friction with the friction reference piece. The cutting energy storage device is installed on the traction feeding device. The cutting energy storage device is in transmission connection with 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 rotation device. The traction gear is rotatably installed inside the tooling rotation device. The traction gear meshes with the traction slider. The friction driving piece is slidably installed on the traction slider. The cutting block is slidably installed on the traction slider.

2. The dressing wheel tooling for the broaching cutter grinding machine according to claim 1, wherein The broach transverse movement device includes a broach transverse movement frame, a broach transverse movement motor, a broach transverse movement lead screw, a broach transverse movement plate, and a broach transverse movement slider. The broach transverse movement slider is slidably installed on the broach transverse movement frame. The broach transverse movement motor is installed on the broach transverse movement frame. The broach transverse movement lead screw is installed at the output end of the broach transverse movement motor. The broach transverse movement lead screw is in transmission connection with the broach transverse movement slider through a thread pair. The broach transverse movement plate is installed on the broach transverse movement block. The broach rotation device is installed on the broach transverse movement plate.

3. The dressing wheel tooling for the broaching cutter grinding machine according to claim 1, wherein A grinding wheel is installed on the grinding device. The grinding device includes a grinding sliding base, a grinding sliding frame, a grinding rotation motor, a grinding motor, and a grinding lifting motor. The grinding sliding frame slides along the grinding sliding base. The sliding direction of the grinding sliding frame points to the broach transverse movement device. The grinding rotation motor is slidably installed on the grinding sliding frame through a slider and can be lifted. The grinding lifting motor is installed on the grinding sliding frame. The output end of the grinding lifting motor is in transmission connection with the grinding rotation motor through a thread pair. The grinding motor is installed at the output end of the grinding rotation motor. The grinding wheel is installed at the output end of the grinding motor.

4. The dressing wheel tooling for the broaching cutter grinding machine according to claim 1, characterized in that, The tooling mounting frame is installed on the broach transverse movement device by screws.

5. The dressing wheel tooling for the broaching cutter grinding machine according to claim 1, wherein The tooling rotation device is installed on the tooling mounting frame through a pin shaft.

6. The dressing wheel tooling for a broaching cutter grinding machine according to claim 1, wherein, 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.

7. The dressing wheel tooling for the broaching cutter grinding machine according to claim 1, wherein The cutting block is provided with a pushing inclined surface, and the friction driving piece is provided with an extrusion inclined surface adapted to the pushing inclined surface. The pushing inclined surface pushes the extrusion inclined surface to further push the friction driving piece to approach and friction with the friction reference piece.

8. The dressing wheel tooling for the broaching cutter grinding machine according to claim 7, characterized in that, Centering springs are arranged on both the upper and lower sides of the pushing inclined surface of the cutting block. One end of one of the centering springs away from the pushing inclined surface abuts against the traction slider, and a pressing plate for pressing the other centering spring is further installed on the traction slider.

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