CN220718949U - Polishing and grinding power spindle of pneumatic loose broach - Google Patents
Polishing and grinding power spindle of pneumatic loose broach Download PDFInfo
- Publication number
- CN220718949U CN220718949U CN202322111994.1U CN202322111994U CN220718949U CN 220718949 U CN220718949 U CN 220718949U CN 202322111994 U CN202322111994 U CN 202322111994U CN 220718949 U CN220718949 U CN 220718949U
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- grinding head
- broach
- cylinder
- main shaft
- blind rivet
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- 238000005498 polishing Methods 0.000 title claims abstract description 35
- 241000587161 Gomphocarpus Species 0.000 claims description 2
- 244000208734 Pisonia aculeata Species 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000005457 optimization Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 210000000078 claw Anatomy 0.000 description 7
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses a polishing and grinding power spindle of a pneumatic loose broach, which comprises a motor, a unidirectional self-return cylinder, a blind rivet, a broach spring and an outer cone rear-pulling type collet chuck, wherein the motor comprises a motor stator, a motor rotor and a grinding head spindle, the grinding head spindle is hollow and fixedly connected with the motor rotor, one end of the grinding head spindle is provided with an inner cone hole matched with the outer cone rear-pulling type collet chuck, one end of the blind rivet extends into the grinding head spindle and is in threaded connection with one end of the outer cone rear-pulling type collet chuck, two ends of the precompressed broach spring are respectively connected with a blind rivet head and one end of the grinding head spindle far away from the outer cone rear-pulling type collet chuck, and the blind rivet can be pushed to move the outer cone rear-pulling type collet chuck to the outside the inner cone hole of the grinding head spindle when a piston rod of the unidirectional self-return cylinder extends. The polishing and grinding power main shaft with the pneumatic loose broach can effectively improve the tool changing speed of polishing equipment, is beneficial to full-automatic tool changing operation of the polishing equipment, and is beneficial to automatic transformation and optimization of the equipment.
Description
Technical Field
The utility model relates to the technical field of grinding and polishing devices, in particular to a polishing power spindle of a pneumatic loose broach.
Background
In the field of sanding, particularly for the polishing of small parts, the prior art generally uses standard-sized grinding wheels with fixed diameter bars (e.g., typically 2.5,3,3.175,4,6 gauge). In the polishing and grinding device, the same power main shaft is provided with standard rod grinding head grinding wheels with the same caliber, and the standard rod grinding head grinding wheels are generally connected with the main shaft of a grinding head motor by adopting a mode of tightening nuts at the front ends of clamping heads by a special spanner or a mode of manually rotating an inclined plane elastic mechanism to push jaws of the outer conical surfaces of the clamping heads to clamp or release the standard rod grinding head grinding wheels.
Because the standard rod grinding head grinding wheel is frequently consumed in polishing and grinding operations, the standard rod grinding head grinding wheel is frequently required to be disassembled, assembled and replaced, and the clamping speed of replacing the standard rod grinding head grinding wheel is low by adopting the manual clamping mode, so that the automatic grinding head grinding wheel replacing operation is not facilitated.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a polishing and grinding power main shaft of a pneumatic loose broach.
The aim of the utility model is realized by the following technical scheme:
the polishing power spindle comprises a motor, wherein the motor comprises a motor stator, a motor rotor and a grinding head spindle, the motor stator, the motor rotor and the grinding head spindle are sequentially and coaxially arranged from outside to inside, the grinding head spindle penetrates through the motor rotor and is fixedly connected with the motor rotor, the polishing power spindle further comprises a blind rivet, a broach spring and an outer cone rear pulling type collet chuck, the grinding head spindle is hollow tubular, one end of the grinding head spindle is provided with an inner cone hole matched with the outer cone rear pulling type collet chuck, one end of the blind rivet stretches into the grinding head spindle and is connected with one end of the outer cone rear pulling type collet chuck through threads, the broach spring is sleeved on the blind rivet, two ends of the broach spring are respectively connected with the pin head of the blind rivet and one end of the grinding head spindle far away from the outer cone rear pulling type collet chuck, and the blind rivet spring is in a precompressed state; the self-return self-locking grinding head comprises a grinding head main shaft, a pull nail, an outer cone back-pull type collet and a one-way self-return cylinder, wherein the pull nail can be pushed when a piston rod of the one-way self-return cylinder stretches out so as to move the outer cone back-pull type collet out of an inner cone hole of the grinding head main shaft.
Further, the unidirectional self-return cylinder comprises a cylinder barrel, a cylinder cover, a piston rod and a cylinder spring, wherein the cylinder barrel is of a hollow structure with one end being open, the open end of the cylinder barrel is fixedly connected with the cylinder cover, the piston is slidably arranged in the cylinder barrel, the piston is fixedly sleeved on one end of the piston rod, the other end of the piston rod penetrates through the cylinder cover and is right opposite to one end of the blind rivet, far away from the external cone, of the rear pull type collet chuck, the cylinder spring is sleeved on the piston rod, and two ends of the cylinder spring are respectively connected with the piston and the cylinder cover.
Further, a gap exists between the end of the piston rod and the blind rivet when the cylinder spring and the broach spring are at a maximum length.
Further, the automatic drawing device also comprises a hollow connecting sleeve, wherein the motor is connected with the unidirectional self-return cylinder through the connecting sleeve, and one end of the blind rivet, which is far away from the outer cone, of the rear drawing type collet chuck and the broach spring are both arranged in the connecting sleeve.
The beneficial effects of the utility model are as follows:
the polishing and grinding power main shaft of the pneumatic loose broach comprises a motor, a unidirectional self-return cylinder, a blind rivet, a broach spring and an outer cone rear pulling type collet chuck, wherein the motor comprises a motor stator, a motor rotor and a grinding head main shaft, the grinding head main shaft penetrates through the motor rotor and is fixedly connected with the motor rotor, the grinding head main shaft is hollow and is provided with an inner cone hole at the end part, one end of the blind rivet stretches into the grinding head main shaft and is connected with one end of the outer cone rear pulling type collet chuck through threads, the blind rivet spring is in a precompressed state and is used for tensioning the outer cone rear pulling type collet chuck backwards through the blind rivet, and the blind rivet can be pushed when a piston rod of the unidirectional self-return cylinder stretches out so as to move the outer cone rear pulling type collet chuck to the outside the inner cone hole of the grinding head main shaft. The polishing power spindle of the pneumatic loose broach adopts a hollow internally-tapered grinding head spindle to be matched with an externally-tapered collet chuck, and the internally-tapered broach spring is used for tensioning the externally-tapered collet chuck, so that the tensioning force applied to a grinding head grinding wheel rod clamped in the jaw of the externally-tapered collet chuck is kept consistent and has enough clamping force, and the grinding head grinding wheel rod can smoothly rotate along with the grinding head spindle for polishing operation; when the grinding wheel rod of the grinding head is released, the one-way self-return cylinder rapidly ejects the outer cone rear-pulling type collet chuck forwards through the blind rivet, and the outer cone of the outer cone rear-pulling type collet chuck moves towards the large diameter direction of the inner cone of the main shaft of the grinding head, so that the claw of the axial slot of the outer cone rear-pulling type collet chuck can be released so as to rapidly release or load the grinding wheel rod of the grinding head. Therefore, the polishing and grinding power main shaft of the pneumatic loose broach can effectively improve the tool changing speed of polishing equipment, is beneficial to the working operation of full-automatic tool changing of the polishing equipment, and is beneficial to the automatic transformation and optimization of the equipment.
Drawings
FIG. 1 is a schematic sectional view of a polishing power spindle of a pneumatic loose broach in a working clamping grinding head state;
FIG. 2 is a schematic sectional view of a polishing power spindle of a pneumatic loose broach in a state of changing a tool to loosen a grinding head;
FIG. 3 is an exploded view of a polishing power spindle of a pneumatic loose broach according to the present utility model;
in the figure, a 1-motor stator, a 2-motor rotor, a 3-grinding head main shaft, a 4-blind rivet, a 5-broach spring, a 6-external cone back-pulling type collet chuck, a 7-piston rod, an 8-piston, a 9-cylinder spring, a 10-cylinder barrel, an 11-cylinder cover, a 12-air inlet and a 13-connecting sleeve are arranged.
Detailed Description
The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.
As shown in fig. 1 to 3, a polishing and grinding power spindle of a pneumatic loose broach comprises a motor, wherein the motor comprises a motor stator 1, a motor rotor 2 and a grinding head spindle 3, the motor stator 1, the motor rotor 2 and the grinding head spindle 3 are sequentially and coaxially arranged from outside to inside, the grinding head spindle 3 penetrates through the motor rotor 2 and is fixedly connected with the motor rotor 2, and the grinding head spindle 3 can rotate along with the motor rotor 2 when the motor is started. In practice, the grinding head spindle 3 and the motor rotor 2 can be in expansion connection in an interference fit manner, and of course, can be fixedly connected in other connection manners. In addition, in the polishing power main shaft of the pneumatic loose broach, the grinding head main shaft 3 is considered to bear certain axial force, so that the motor shell can be properly lengthened in implementation, and a thrust bearing is additionally arranged in the motor shell on the basis of the original rolling bearing.
A blind rivet 4, a broach spring 5 and an outer cone rear pulling type collet 6 are also arranged. Wherein, one end of the outer cone back-pulling type collet chuck 6 is provided with a plurality of claws, and each claw can realize the clamping of the grinding head grinding wheel rod when tightening up towards the center, and each claw can release the grinding head grinding wheel rod when outwards opening, which is the structure of the prior art and is not excessively repeated. The grinding head main shaft 3 is arranged into a hollow tubular structure, one end of the grinding head main shaft 3 is provided with an inner taper hole matched with the outer taper rear pulling type collet chuck 6, one end of the blind rivet 4 extends into the grinding head main shaft 3 and is connected with one end of the rear pulling type collet chuck 6 through threads, the broach spring 5 is sleeved on the blind rivet 4, and two ends of the broach spring 5 are respectively connected with the nail head of the blind rivet 4 and one end of the grinding head main shaft 3, which is far away from the outer taper rear pulling type collet chuck 6. The broach spring 5 is in a precompression state, the pull nail 4 is always maintained to pull the outer cone back-pull type collet 6 leftwards under the elastic force of the broach spring 5, under the pulling force state, the inner cone hole of the grinding head spindle 3 is used for inwards bundling all the clamping jaws of the outer cone back-pull type collet 6, enough clamping force can be provided for the grinding head grinding wheel rod arranged between the clamping jaws, and the grinding head grinding wheel rod can be smoothly driven to rotate after the motor is started, so that polishing and grinding work is completed.
The device is also provided with a unidirectional self-return cylinder, when high-pressure gas is introduced into the unidirectional self-return cylinder, a piston rod 7 of the unidirectional self-return cylinder extends out, so that the blind rivet 4 can be pushed to compress the broach spring 5 and the outer cone rear-pulling type collet 6 can be moved rightwards to the outside of an inner cone hole of the grinding head main shaft 3, and at the moment, all claws of the outer cone rear-pulling type collet 6 are outwards opened, so that the grinding wheel rod of the grinding head can be smoothly disassembled and replaced; after the grinding wheel rod of the grinding head is replaced, the high-pressure gas is stopped, the piston rod 7 of the unidirectional self-return cylinder returns and retracts, at the moment, under the action of the elasticity of the broach spring 5, the broach 4 pulls the outer cone back-pull type collet 6 leftwards, and each claw of the inner cone hole inner cone outer cone back-pull type collet 6 of the grinding head spindle 3 is retracted inwards, so that the grinding wheel rod of the grinding head positioned between each claw can be clamped.
The polishing power spindle of the pneumatic loose broach adopts a hollow internally-tapered grinding head spindle 3 to be matched with an externally-tapered collet 6, and the internally-tapered broach spring 5 is used for tensioning the jaws of the externally-tapered collet 6, so that the tensioning force applied to the grinding wheel rod of the grinding head clamped in the jaws of the externally-tapered collet 6 is kept consistent and has enough clamping force, and the grinding wheel rod of the grinding head can rotate along with the grinding head spindle 3 to smoothly perform polishing operation; when the grinding wheel rod of the grinding head is released, the one-way self-return cylinder rapidly ejects the outer cone back-pull type collet chuck 6 forwards through the blind rivet 4, and the outer cone of the outer cone back-pull type collet chuck 6 moves towards the large diameter direction of the inner cone of the grinding head main shaft 3, so that the jaws of the axial slot of the outer cone back-pull type collet chuck 6 can be loosened so as to rapidly release or load the grinding wheel rod of the grinding head. Therefore, the polishing and grinding power main shaft of the pneumatic loose broach can effectively improve the tool changing speed of polishing equipment, is beneficial to the working operation of full-automatic tool changing of the polishing equipment, and is beneficial to the automatic transformation and optimization of the equipment.
The unidirectional self-return cylinder comprises a cylinder barrel 10, a cylinder cover 11, a piston 8, a piston rod 7 and a cylinder spring 9, wherein the cylinder barrel 10 is of a hollow structure with one end being open, the open end of the cylinder barrel 10 is fixedly connected with the cylinder cover 11, the piston 8 is slidably arranged in the cylinder barrel 10, the piston 8 is fixedly sleeved on one end of the piston rod 7, the other end of the piston rod 7 penetrates through the cylinder cover 11 and is opposite to the blind rivet 4 and is far away from one end of the external cone back-pull type collet chuck 6, the cylinder spring 9 is sleeved on the piston rod 7, two ends of the cylinder spring 9 are respectively connected with the piston 8 and the cylinder cover 11, and an air inlet 12 is formed in one end of the cylinder barrel 10 far away from the cylinder cover 11. When high-pressure gas is introduced from the gas inlet 12, the piston rod 7 can be pushed out and the cylinder spring 9 can be compressed; when the air inlet 12 is depressurized, the piston rod 7 can be driven to retract and return under the action of the elasticity of the air cylinder spring 9.
Further, when the air cylinder spring 9 is in a natural state, the air cylinder spring 9 and the broach spring 5 are in the maximum length, and a certain gap exists between the end of the piston rod 7 and the blind rivet 4 at the moment, so that abrasion caused by contact between the end of the piston rod 7 and the blind rivet 4 in the polishing process is prevented. In particular, the piston 8 has a positioning function, in which the outer cone pull-back collet 6 can be pushed out to open its jaws just when the right end of the piston 8 is in abutment with the cylinder head 11 by the introduction of high pressure gas, and the distance between the right end of the piston 8 and the cylinder head 11 is such that a certain gap exists between the end of the piston rod 7 and the blind rivet 4 when the cylinder spring 9 is in a natural state.
Further, a hollow connecting sleeve 13 is further arranged, the motor is connected with the unidirectional self-return cylinder through the connecting sleeve 13, one end of the blind rivet 4, which is far away from the outer cone back-pull type collet 6, and the broach spring 5 are arranged in the connecting sleeve 13, the whole device is integrated into a whole through the connecting sleeve 13, and meanwhile, the extending ends of the broach spring 5, the blind rivet 4 and the piston rod 7 are protected.
The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (4)
1. The polishing and grinding power main shaft of the pneumatic loose broach comprises a motor, wherein the motor comprises a motor stator, a motor rotor and a grinding head main shaft, the motor stator, the motor rotor and the grinding head main shaft are coaxially arranged in sequence from outside to inside,
the novel self-locking type broach is characterized in that the main shaft of the grinding head penetrates through the motor rotor and is fixedly connected with the motor rotor, the novel self-locking type broach also comprises a blind rivet, a broach spring and an outer cone rear pulling type collet chuck, the main shaft of the grinding head is hollow, one end of the main shaft of the grinding head is provided with an inner cone hole matched with the outer cone rear pulling type collet chuck, one end of the blind rivet extends into the main shaft of the grinding head and is connected with one end of the outer cone rear pulling type collet chuck through threads, the broach spring is sleeved on the blind rivet, two ends of the broach spring are respectively connected with a nail head of the blind rivet and one end of the main shaft of the grinding head, which is far away from the outer cone rear pulling type collet chuck, and the broach spring is in a precompressed state;
the self-return self-locking grinding head comprises a grinding head main shaft, a pull nail, an outer cone back-pull type collet and a one-way self-return cylinder, wherein the pull nail can be pushed when a piston rod of the one-way self-return cylinder stretches out so as to move the outer cone back-pull type collet out of an inner cone hole of the grinding head main shaft.
2. The polishing power spindle of the pneumatic loose broach according to claim 1, wherein the unidirectional self-return cylinder comprises a cylinder barrel, a cylinder cover, a piston rod and a cylinder spring, the cylinder barrel is of a hollow structure with one end open, the open end of the cylinder barrel is fixedly connected with the cylinder cover, the piston is slidably arranged in the cylinder barrel, the piston is fixedly sleeved on one end of the piston rod, the other end of the piston rod penetrates through the cylinder cover and is opposite to one end, far away from an external cone pull-back type collet, of the blind rivet, the cylinder spring is sleeved on the piston rod, and two ends of the cylinder spring are respectively connected with the piston and the cylinder cover.
3. A pneumatic loose broach polishing power spindle according to claim 2, wherein there is a gap between the end of the piston rod and the blind rivet when the cylinder and broach springs are at maximum length.
4. The polishing and grinding power spindle of a pneumatic loose broach according to claim 1, further comprising a hollow connecting sleeve, wherein the motor is connected with the unidirectional self-return cylinder through the connecting sleeve, and one end of the blind rivet, far away from the outer cone rear pulling type collet, and the broach spring are both arranged in the connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322111994.1U CN220718949U (en) | 2023-08-08 | 2023-08-08 | Polishing and grinding power spindle of pneumatic loose broach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322111994.1U CN220718949U (en) | 2023-08-08 | 2023-08-08 | Polishing and grinding power spindle of pneumatic loose broach |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220718949U true CN220718949U (en) | 2024-04-05 |
Family
ID=90495651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322111994.1U Active CN220718949U (en) | 2023-08-08 | 2023-08-08 | Polishing and grinding power spindle of pneumatic loose broach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220718949U (en) |
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2023
- 2023-08-08 CN CN202322111994.1U patent/CN220718949U/en active Active
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