CN110480043B - Clamp for machining annular workpiece - Google Patents
Clamp for machining annular workpiece Download PDFInfo
- Publication number
- CN110480043B CN110480043B CN201910766802.6A CN201910766802A CN110480043B CN 110480043 B CN110480043 B CN 110480043B CN 201910766802 A CN201910766802 A CN 201910766802A CN 110480043 B CN110480043 B CN 110480043B
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- CN
- China
- Prior art keywords
- expansion sleeve
- pressing block
- briquetting
- cover
- annular workpiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003754 machining Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
- B23B31/4053—Gripping the work or tool by jaws moving radially controlled by conical surfaces using fluid-pressure means to actuate the gripping means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention aims to provide a clamp for annular workpiece machining, which is used for clamping with high precision so as to improve workpiece machining precision. In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a clamp for annular workpiece processing, includes the cover base that rises, the cover base that rises extends to the axial side has the location arch, the cover base that rises extends to the circumference side has spacing arch, the location is protruding to be gone up to slide and is furnished with the cover that rises, it is located to rise cover circumference outward flange spacing protruding circumference is inboard, it is equipped with first briquetting to rise the cover axial side, first briquetting collocation has linear drive device, first briquetting middle part is formed with the second briquetting of the application of force to the cover that rises and the groove of stepping down to the cover that rises under linear drive device's effect, the annular workpiece that the cover was established on the cover that rises is limited between first briquetting and spacing arch, and the second briquetting is to rising cover axial face application of force so that the cover circumference outer wall that rises offsets with annular workpiece circumference inner wall.
Description
Technical Field
The invention relates to a processing clamp, in particular to a clamp for processing an annular workpiece, which is used for processing the circumferential outer wall of the annular workpiece.
Background
The machining precision of the large-aperture annular workpiece is mainly ensured by the precision of a machine tool and the precision of a clamp, and if the precision of the clamp is not achieved, the precision of the machine tool is high, and the machining of the annular workpiece cannot be improved. At present, annular workpieces such as gears and the like are tightly propped by double centers, and then the workpieces are processed by other processing equipment. But the clamping force of the double centers on the workpiece is insufficient, so that when the clamp drives the workpiece to rotate, the workpiece can rotate relative to the clamp, and the machining precision of the workpiece is difficult to ensure.
Disclosure of Invention
The invention aims to provide a clamp for annular workpiece machining, which is used for clamping with high precision so as to improve workpiece machining precision.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a clamp for annular workpiece processing, includes the cover base that rises, the cover base that rises extends to the axial side has the location arch, the cover base that rises extends to the circumference side has spacing arch, the location is protruding to be gone up to slide and is furnished with the cover that rises, it is located to rise cover circumference outward flange spacing protruding circumference is inboard, it is equipped with first briquetting to rise the cover axial side, first briquetting collocation has linear drive device, first briquetting middle part is formed with the second briquetting of the application of force to the cover that rises and the groove of stepping down to the cover that rises under linear drive device's effect, the annular workpiece that the cover was established on the cover that rises is limited between first briquetting and spacing arch, and the second briquetting is to rising cover axial face application of force so that the cover circumference outer wall that rises offsets with annular workpiece circumference inner wall.
When the clamp is used, the annular workpiece is sleeved on the expansion sleeve, then the linear driving device is started, the first pressing block and the second pressing block move towards the side of the expansion sleeve, so that the annular workpiece is clamped between the first pressing block and the limiting protrusion, and the expansion sleeve is expanded to clamp the workpiece. Wherein, can use various expansion sleeves on the existing market, can adopt various existing modes to realize the expansion of the expansion sleeve. The annular workpiece is clamped circumferentially and axially, the clamping and fixing effects of the workpiece are better, and when the rotating mechanism on the machine tool drives the clamp, the workpiece and the clamp cannot rotate relatively, so that the clamping precision is improved, and the follow-up machining precision is guaranteed.
Preferably, the inner diameter of the expansion sleeve is gradually increased from the second pressing block side to the limit protrusion side, the outer diameter of the positioning protrusion is gradually increased from the second pressing block side to the limit protrusion side, and the maximum inner diameter of the expansion sleeve is smaller than the maximum outer diameter of the positioning protrusion; when the expansion sleeve is expanded to fix the annular workpiece, a gap is reserved between the axial surface of the expansion sleeve, which is far away from the second pressing block side, and the limiting protrusion. The device is used for enabling the expansion sleeve to expand after moving for a certain distance so as to support the workpiece. The invention has a certain gap between the expansion sleeve and the limiting bulge, and leaves a margin, so that the expansion sleeve is prevented from being collided and damaged with the limiting bulge when moving to the limiting position, and the invention is also used for fixing the expansion sleeve to the workpiece when the inner hole of the workpiece is bigger.
Preferably, the first pressing block is sleeved on the second pressing block, the second pressing block is fixed at the output end of the linear driving device, a first guide groove and a first guide block which are matched with each other are arranged between the circumferential inner wall of the first pressing block and the circumferential outer wall of the second pressing block, the first pressing block extends outwards in the axial direction to form an outer boss, a first compression spring is arranged between the outer boss and the first pressing block, and the first compression spring is sleeved on the second pressing block.
The first compression spring is used for avoiding the first pressing block from excessively applying force to the annular workpiece so as to avoid damage to the workpiece. The cooperation of first guide block and first guide way is used for avoiding first briquetting to break away from first briquetting, can also play the guide effect.
Preferably, an accommodating groove axially penetrating towards the first pressing block side is formed in the middle of the positioning protrusion, a mandrel is slidably arranged in the accommodating groove, and the mandrel is fixed with the expansion sleeve. The mandrel plays an axial guiding role to avoid the inclination of the expansion sleeve and ensure the clamping precision. The mandrel can be fixed with the expansion sleeve in various modes.
Preferably, a second compression spring is arranged in the accommodating groove, and the linear driving device drives the second pressing block to abut against the core rod or the expansion sleeve so as to compress the second compression spring. The second compression spring can be used for resetting the expansion sleeve so as to facilitate the taking out of the workpiece.
Preferably, a second guide groove and a second guide block which are matched with each other are arranged between the circumferential outer wall of the mandrel and the expansion sleeve base. The setting is in order to avoid the dabber to break away from the holding tank, still plays certain guide effect, can also avoid rising the cover and rise the cover base rotation relatively.
Preferably, the mandrel is provided with an air hole penetrating axially, one end of the air hole, which is close to the second pressing block, is of an open structure, the end part of the second pressing block is tip-shaped, and the linear driving device drives the second pressing block to prop against the mandrel or the expansion sleeve so that the tip end of the second pressing block is matched in the air hole. The mandrel slides to enable gas in the accommodating groove to punch and clean the air holes and the end parts of the second pressing block.
Preferably, a sealing sleeve is arranged on one side, close to the first pressing block, of the limiting protrusion, the cross section of the sealing sleeve is annular and sleeved on the positioning protrusion, one end, far away from the first pressing block, of the expansion sleeve is always located in the sealing sleeve, and the outer wall of the expansion sleeve is arranged in a sliding fit with the inner wall of the sealing sleeve. The seal cover is used for avoiding foreign matters such as dust from entering, and prevents that the foreign matters from entering the clamp from affecting the precision of the clamp.
Preferably, the inner wall of the sealing sleeve is recessed towards the outer side in the circumferential direction so as to form an annular groove, and a sealing ring is matched in the annular groove. The above arrangement further prevents foreign matters from entering the clamp to affect the precision of the clamp
Preferably, the sealing sleeve is a ring-shaped member made of an elastic material. The arrangement ensures the axial limit of the workpiece under the condition of avoiding the damage of the workpiece.
The invention has the advantages of realizing high-precision clamping and improving the processing precision of the workpiece.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1, the clamp for processing an annular workpiece comprises an expansion sleeve base 1, wherein a positioning protrusion 11 extends towards the axial side of the expansion sleeve base 1, a limiting protrusion 12 extends towards the circumferential side of the expansion sleeve base 1, an expansion sleeve 2 is slidably arranged on the positioning protrusion 11, the circumferential outer edge of the expansion sleeve 2 is positioned at the inner side of the circumferential outer edge of the limiting protrusion 12, a first pressing block 3 is arranged on the axial side of the expansion sleeve 2, a linear driving device is matched with the first pressing block 3, a second pressing block 4 for applying force to the expansion sleeve 2 and a yielding groove 31 for yielding the expansion sleeve 2 are formed in the middle of the first pressing block 3, the annular workpiece 5 sleeved on the expansion sleeve 2 is limited between the first pressing block 3 and the limiting protrusion 12 under the action of the linear driving device, and the second pressing block 4 applies force to the axial surface of the expansion sleeve 2 so that the circumferential outer wall of the expansion sleeve is propped against the circumferential inner wall of the annular workpiece 5. The linear driving device of this embodiment is an oil cylinder.
The inner diameter of the expansion sleeve 2 is gradually increased from the second pressing block 4 side to the limit protrusion 12 side, the outer diameter of the positioning protrusion 11 is gradually increased from the second pressing block 4 side to the limit protrusion 12 side, the maximum inner diameter of the expansion sleeve 2 is smaller than the maximum outer diameter of the positioning protrusion 11, and when the expansion sleeve 2 is expanded to fix the annular workpiece 5, a gap is reserved between an axial surface of the expansion sleeve 2 away from the second pressing block 4 side and the limit protrusion 12. The expansion sleeve of the embodiment is a full-cut expansion sleeve.
The first briquetting 3 is sleeved on the second briquetting 4, the second briquetting 4 is fixed at the output end of the linear driving device, first guide grooves 41 and first guide blocks 30 which are matched with each other are arranged between the circumferential inner wall of the first briquetting 3 and the circumferential outer wall of the second briquetting 4, the first guide grooves 41 are arranged along parallel lines of the expansion sleeve axis, the first briquetting 3 extends outwards in the axial direction to form an outer boss 32, a first compression spring 33 is arranged between the outer boss 32 and the first briquetting 3, and the first compression spring 33 is sleeved on the second briquetting 4. The first guide block 30 is a bolt, and a radial hole is formed in the first pressing block and is in threaded fit with the first guide block.
The middle part of the positioning bulge 11 is provided with a containing groove 13 axially penetrating the first pressing block 3, a mandrel 21 is arranged in the containing groove 13 in a sliding manner, and the mandrel 21 is fixed with the expansion sleeve 2. The mandrel 21 may be fixed to the expansion sleeve 2 in various manners and coupled to the expansion sleeve 2 by applying a force to the mandrel 21.
The accommodating groove 13 is internally provided with a second compression spring 14, and the linear driving device drives the second pressing block 4 to prop against the core rod so as to compress the second compression spring 14. A second guide groove 22 and a second guide block 15 which are matched with each other are arranged between the peripheral outer wall of the mandrel 21 and the expansion sleeve base 1. The second guide block 15 is a bolt, and a radial hole is formed on the expansion sleeve base 1 and is in threaded fit with the second guide block. The mandrel 21 is provided with an air hole 23 which penetrates axially, one end of the air hole 23, which is close to the second pressing block 4, is of an open structure, the end part of the second pressing block 4 is of a tip shape, and the linear driving device drives the second pressing block 4 to prop against the mandrel so that the tip end of the second pressing block 4 is matched in the air hole 23.
One side of the limiting bulge 12, which is close to the first pressing block 3, is provided with a sealing sleeve 6, the cross section of the sealing sleeve 6 is annular and sleeved on the positioning bulge 11, one end of the expansion sleeve 2, which is far away from the first pressing block 3, is always positioned in the sealing sleeve 6, and the outer wall of the expansion sleeve 2 and the inner wall of the sealing sleeve 6 are arranged in a sliding fit manner. Wherein the inner wall of the sealing sleeve 6 is recessed to the outer side in the circumferential direction to form an annular groove, and a sealing ring 61 is matched in the annular groove. Wherein the sealing sleeve 6 is a ring-shaped member made of an elastic material, such as rubber.
The clamp can be used together with the existing machine tool, the clamp is driven to rotate by a device of the machine tool, and the second pressing block and the first pressing block are driven to axially move by an oil cylinder of the machine tool.
The invention has the advantages of realizing high-precision clamping and improving the processing precision of the workpiece.
Claims (8)
1. The clamp for machining the annular workpiece is characterized by comprising an expansion sleeve base, wherein a positioning protrusion extends towards the axial side of the expansion sleeve base, a limiting protrusion extends towards the circumferential side of the expansion sleeve base, an expansion sleeve is slidably arranged on the positioning protrusion, the circumferential outer edge of the expansion sleeve is positioned at the inner side of the circumferential outer edge of the limiting protrusion, a first pressing block is arranged on the axial side of the expansion sleeve, a linear driving device is matched with the first pressing block, a second pressing block for applying force to the expansion sleeve and a yielding groove for yielding the expansion sleeve are formed in the middle of the first pressing block, the annular workpiece sleeved on the expansion sleeve is limited between the first pressing block and the limiting protrusion under the action of the linear driving device, and the second pressing block applies force to the axial surface of the expansion sleeve so that the circumferential outer wall of the expansion sleeve is propped against the circumferential inner wall of the annular workpiece; the inner diameter of the expansion sleeve is gradually increased from the second pressing block side to the limiting bulge side, the outer diameter of the positioning bulge is gradually increased from the second pressing block side to the limiting bulge side, and the maximum inner diameter of the expansion sleeve is smaller than the maximum outer diameter of the positioning bulge; when the expansion sleeve is expanded to fix the annular workpiece, a gap is reserved between the axial surface of the expansion sleeve, which is far away from the second pressing block side, and the limiting protrusion; the first briquetting is sleeved on the second briquetting, the second briquetting is fixed at the output end of the linear driving device, a first guide groove and a first guide block which are matched with each other are arranged between the circumferential inner wall of the first briquetting and the circumferential outer wall of the second briquetting, the first briquetting extends outwards in the axial direction to form an outer boss, a first compression spring is arranged between the outer boss and the first briquetting, and the first compression spring is sleeved on the second briquetting.
2. The fixture for machining the annular workpiece according to claim 1, wherein a containing groove axially penetrating toward the first pressing block side is formed in the middle of the positioning protrusion, a mandrel is slidably arranged in the containing groove, and the mandrel is fixed with the expansion sleeve.
3. The fixture for machining the annular workpiece according to claim 2, wherein the accommodating groove is internally provided with a second compression spring, and the linear driving device drives the second pressing block to abut against the core rod or the expansion sleeve so as to compress the second compression spring.
4. The fixture for machining the annular workpiece according to claim 2, wherein a second guide groove and a second guide block which are matched with each other are arranged between the circumferential outer wall of the mandrel and the expansion sleeve base.
5. The fixture for machining the annular workpiece according to claim 2, wherein the mandrel is provided with an air hole penetrating axially, one end of the air hole, which is close to the second pressing block, is of an open structure, the end part of the second pressing block is of a tip shape, and the linear driving device drives the second pressing block to abut against the core rod or the expansion sleeve so that the tip end of the second pressing block is matched in the air hole.
6. The clamp for machining the annular workpiece according to claim 2, wherein a sealing sleeve is arranged on one side, close to the first pressing block, of the limiting protrusion, the cross section of the sealing sleeve is annular and sleeved on the positioning protrusion, one end, far away from the first pressing block, of the expansion sleeve is always positioned in the sealing sleeve, and the outer wall of the expansion sleeve and the inner wall of the sealing sleeve are arranged in a sliding fit manner.
7. The fixture for machining annular workpieces according to claim 6, wherein the inner wall of the sealing sleeve is recessed circumferentially outward to form an annular groove in which a seal ring is fitted.
8. The fixture for machining an annular workpiece according to claim 6, wherein the sealing sleeve is an annular member made of an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766802.6A CN110480043B (en) | 2019-08-20 | 2019-08-20 | Clamp for machining annular workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766802.6A CN110480043B (en) | 2019-08-20 | 2019-08-20 | Clamp for machining annular workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110480043A CN110480043A (en) | 2019-11-22 |
| CN110480043B true CN110480043B (en) | 2024-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910766802.6A Active CN110480043B (en) | 2019-08-20 | 2019-08-20 | Clamp for machining annular workpiece |
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| Country | Link |
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| CN (1) | CN110480043B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145811B (en) * | 2021-12-09 | 2023-03-10 | 浙江微度医疗器械有限公司 | Device for detaching transducer of ultrasonic cutting hemostatic knife system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210475591U (en) * | 2019-08-20 | 2020-05-08 | 浙江万里扬新能源驱动科技有限公司 | Clamp for processing annular workpiece |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3701539A (en) * | 1971-03-03 | 1972-10-31 | Parker Living Trust John J | Work holder for splined workpieces |
| KR100728174B1 (en) * | 2007-02-08 | 2007-06-13 | 김석주 | Clamp device for a pipe |
| JP5204992B2 (en) * | 2007-06-11 | 2013-06-05 | 帝国チャック株式会社 | Chuck device |
| JP5474608B2 (en) * | 2010-03-01 | 2014-04-16 | パスカルエンジニアリング株式会社 | Clamping device |
| CN204018769U (en) * | 2014-08-20 | 2014-12-17 | 阳山县联合铸锻有限公司 | A kind of ringfeder frock clamp |
| CN204053149U (en) * | 2014-08-26 | 2014-12-31 | 河南蒲瑞精密机械有限公司 | Workpiece centering clamping device |
| CN207358298U (en) * | 2017-10-18 | 2018-05-15 | 江苏沃得农业机械配件制造有限公司 | Fixture for Gear-shaving is positioned for gear gapless |
| CN208853754U (en) * | 2018-07-26 | 2019-05-14 | 陕西法士特汽车传动集团有限责任公司 | A kind of automatic bipyramid expander fixture |
| CN109550988B (en) * | 2018-12-07 | 2021-04-30 | 广州市昊志机电股份有限公司 | High-precision machine tool mandrel clamp and clamping method thereof |
-
2019
- 2019-08-20 CN CN201910766802.6A patent/CN110480043B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210475591U (en) * | 2019-08-20 | 2020-05-08 | 浙江万里扬新能源驱动科技有限公司 | Clamp for processing annular workpiece |
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| Publication number | Publication date |
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| CN110480043A (en) | 2019-11-22 |
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