CN219881338U - Special fixture for turning excircle of engine cylinder body - Google Patents
Special fixture for turning excircle of engine cylinder body Download PDFInfo
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- CN219881338U CN219881338U CN202320928881.8U CN202320928881U CN219881338U CN 219881338 U CN219881338 U CN 219881338U CN 202320928881 U CN202320928881 U CN 202320928881U CN 219881338 U CN219881338 U CN 219881338U
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- 238000000034 method Methods 0.000 abstract description 6
- 238000003754 machining Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a special fixture for turning an outer circle of an engine cylinder body, which comprises a fixture body, wherein an expansion core is fixedly arranged on the fixture body, an expansion sleeve is movably arranged on the expansion core, a workpiece is movably arranged on the expansion sleeve, after the expansion sleeve is tightly expanded, the inner wall of the workpiece is clamped and positioned, and a pull rod assembly for clamping and positioning the end face of the workpiece is arranged on the expansion core. In the using process, an operator sleeves the workpiece into the expansion sleeve, after the workpiece is installed in place, the electric push rod is started, at the moment, the movable block moves towards the direction close to the electric push rod, the connecting rod drives the pull ring to move, the pull ring drives the expansion sleeve to move, the expansion sleeve clamps the inner wall of the workpiece, the workpiece is axially positioned, the movable block also drives the pull rod to move when moving, and the pull rod drives the transverse rod to clamp the side wall of the workpiece, so that the radial positioning of the workpiece is realized.
Description
Technical Field
The utility model relates to the technical field of clamps, in particular to a special clamp for turning an excircle of an engine cylinder body.
Background
The fixture is a device for fixing a machining object in a machining process to enable the machining object to occupy a correct position so as to receive construction or detection, and in a broad sense, any process in the machining process, a device for quickly, conveniently and safely mounting a workpiece can be called a fixture, and the fixture is generally composed of a positioning element (determining the correct position of the workpiece in the fixture), a clamping device, a tool setting guide element (determining the relative position of a tool and the workpiece or guiding the tool direction), an indexing device (enabling the workpiece to be machined into a plurality of stations in one mounting, including a rotary indexing device and a linear movement indexing device), a connecting element, a fixture body (fixture base) and the like.
Among the prior art, a thin wall cylinder body turning excircle special fixture of publication No. "CN203610707U", including the anchor clamps body, the anchor clamps body has the outer conical surface, and special fixture still includes: a clamping driving part including a pull rod capable of completing axial movement; the clamping and fixing part comprises a tension spring, the tension spring is provided with an inner conical surface matched with the outer conical surface of the clamp body, and the outer annular surface of the tension spring is matched with the inner surface of the thin-wall cylinder body; the positioning part comprises a positioning disc, one end of the positioning disc is fixed on the clamp body, and the other end of the positioning disc is used as a positioning surface to be matched with the end face of the thin-wall cylinder body; the guide part comprises a guide nut and a pull disc which are fixed on the pull rod, and the pull disc is fixed with the guide nut. The clamp is used for tensioning the workpiece through the tension springs, and the contact area between the workpiece and the tension petals is increased due to the design of the plurality of tension petals, so that the stress and the deformation of the workpiece are more uniform; the use of the guide portion eliminates the possibility of radial runout of the fixture, so that the workpiece obtains better processing quality.
However, the prior art still has great disadvantages, such as:
in the prior art, although the side wall of the cylinder body can be clamped, the cylinder body can only be clamped and positioned radially during clamping, and the axial direction of the cylinder body cannot be clamped and positioned, so that the cylinder body is machined, and the axial force can be generated on the cylinder body by a machining tool during feeding although the cylinder body is clamped radially, if the cutting tool is large, the cylinder body can be loosened and shed along the axial direction, and harm is caused to operators and equipment.
Disclosure of Invention
The utility model aims to provide a special fixture for turning an excircle of an engine cylinder body, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a special fixture of engine cylinder block turning excircle, includes the anchor clamps body, the fixed core that rises that is provided with on the anchor clamps body, the activity is provided with the cover that rises on the core that rises, the activity is provided with the work piece on the cover that rises, the work piece includes: the end face and the inner wall are clamped and positioned by the expansion sleeve after the expansion, a shoulder is fixedly arranged on the expansion sleeve, a pull ring is movably arranged on the shoulder, a movable block is movably arranged in the clamp body, the movable block drives the pull ring to move through a plurality of connecting rods, the connecting rods are fixedly arranged on the movable block, and when the connecting rods drive the expansion sleeve to move through the pull ring, the inner wall of the workpiece is clamped by the expansion sleeve;
the tension core is provided with a pull rod assembly for clamping and positioning the end face of the workpiece.
Preferably, the pull rod assembly comprises a pull rod movably arranged on the expansion core, the pull rod is movably arranged on the axis of the expansion core, one end of the pull rod is provided with a cross rod, and the cross rod is arranged at one end close to the end face.
Preferably, one end of the pull rod is provided with a first thread, the first thread is arranged at one end close to the cross rod, a first nut is arranged on the first thread, and the cross rod is fixed on the pull rod by the first nut.
Preferably, the pull rod is fixedly provided with a step, the step is arranged between the movable block and the clamp body, one end, away from the first thread, of the pull rod is provided with a second thread, the second thread is provided with a second nut, the pull rod is provided with a spring, and the spring is arranged between the movable block and the second nut.
Preferably, a washer is movably arranged on the pull rod, and the washer is arranged between the spring and the second nut.
Preferably, two telescopic blocks are movably arranged on the cross rod, the two telescopic blocks are symmetrically arranged at two ends of the cross rod, a compression spring for resetting is fixedly arranged on the two telescopic blocks, and the compression spring is arranged between the telescopic blocks and the cross rod.
Preferably, chamfer angles are arranged on the two telescopic blocks.
Preferably, the expansion sleeve is provided with a plurality of abdication grooves, and the expansion sleeve is provided with a plurality of anti-skid grooves.
Preferably, the clamp body is fixedly provided with an electric push rod for driving the movable block to move, and the electric push rod is fixedly arranged between the movable block and the clamp body.
Compared with the prior art, the utility model has the beneficial effects that:
1. through the arrangement of the pull rod, when the pull ring drives the expansion sleeve to clamp the inner wall of the workpiece, the transverse rod clamps the end face of the workpiece, so that the workpiece is clamped and positioned in the radial direction and the axial direction, and through the arrangement of the spring, after the transverse rod compresses the workpiece, if the pull ring continues to move, the spring can be compressed, so that the end face of the workpiece can be clamped, and the end face of the workpiece cannot be damaged due to overlarge force of the pull rod;
2. through the setting of flexible piece, operating personnel only need push the work piece into the cover that rises when clamping the work piece, and the work piece is when getting into the cover that rises, and flexible piece is compressed, and when the work piece is installed in place, the flexible piece resets through the pressure of pressure spring, and flexible piece presss from both sides tightly the terminal surface of work piece, and whole process does not need extra instrument, convenient operation has shortened the time that operating personnel installed the work piece.
In the using process, an operator sleeves the workpiece into the expansion sleeve, after the workpiece is installed in place, the electric push rod is started, at the moment, the movable block moves towards the direction close to the electric push rod, the connecting rod drives the pull ring to move, the pull ring drives the expansion sleeve to move, and the expansion sleeve clamps the inner wall of the workpiece to axially position the workpiece;
when the movable block moves, the pull rod is driven to move, and the pull rod drives the transverse rod to clamp the side wall of the workpiece, so that the radial positioning of the workpiece is realized.
Drawings
FIG. 1 is a schematic perspective view of the whole device of the present utility model;
FIG. 2 is an exploded view of the overall structure of the present utility model;
FIG. 3 is a schematic perspective view of the cross bar of the present utility model disposed on a tie rod;
FIG. 4 is a schematic perspective view of the expansion sleeve of the present utility model;
fig. 5 is a cross-sectional view of the overall structure of the present utility model.
In the figure: 1. a clamp body; 2. expanding the core; 3. expanding sleeve; 4. a workpiece; 401. an end face; 402. an inner wall; 5. a shoulder; 6. a pull ring; 7. a movable block; 701. a connecting rod; 8. a pull rod; 9. a cross bar; 10. a first thread; 11. a first nut; 12. a step; 13. a second thread; 14. a second nut; 15. a spring; 16. a gasket; 17. a telescopic block; 18. a pressure spring; 19. chamfering; 20. a relief groove; 21. an anti-skid groove; 22. an electric push rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution:
embodiment one:
the special fixture for turning the excircle of the engine cylinder body comprises a fixture body 1, wherein the fixture body 1 in the embodiment is arranged on a main shaft of a lathe, an expansion core 2 is fixedly arranged on the fixture body 1, an expansion sleeve 3 is movably arranged on the expansion core 2 in the embodiment, a plurality of yielding grooves 20 are formed in the expansion sleeve 3 in the embodiment, after the expansion sleeve 3 is extruded, gaps of the yielding grooves 20 become large, so that the inner wall 402 of a workpiece 4 is clamped, a plurality of anti-skid grooves 21 are formed in the expansion sleeve 3, friction force between the workpiece 4 and the expansion sleeve 3 can be increased by the anti-skid grooves 21 in the embodiment, and loosening and sliding are not easy to generate when the workpiece 4 is subjected to axial force;
the work piece 4 is movably arranged on the expansion sleeve 3, and the work piece 4 comprises: the end face 401 and the inner wall 402, after the expansion sleeve 3 is tightly expanded, the workpiece 4 is clamped and positioned, a shoulder 5 is fixedly arranged on the expansion sleeve 3, the shoulder 5 in the embodiment is used for being matched with a pull ring 6, the shoulder 5 is movably provided with the pull ring 6, a movable block 7 is movably arranged in the clamp body 1, the movable block 7 in the embodiment is driven by an electric push rod 22, the movable block 7 drives a connecting rod 701 fixedly arranged on the movable block 7 to move when moving, the connecting rod 701 drives the pull ring 6 to move when moving, the movable block 7 drives the pull ring 6 to move through a plurality of connecting rods 701, a plurality of connecting rods 701 are fixedly arranged on the movable block 7, when the connecting rod 701 drives the expansion sleeve 3 to move through the pull ring 6, and the expansion sleeve 3 clamps the inner wall 402 of the workpiece 4;
the tension core 2 is provided with a pull rod assembly for clamping and positioning the end face 401 of the workpiece 4.
Embodiment two:
on the basis of the first embodiment, the pull rod assembly in the first embodiment is described, the pull rod assembly comprises a pull rod 8 movably arranged on the expansion core 2, the pull rod 8 is movably arranged on the axis of the expansion core 2, one end of the pull rod 8 is provided with a cross rod 9, the cross rod 9 is arranged at one end close to the end face 401, one end of the pull rod 8 is provided with a first thread 10, the first thread 10 is arranged at one end close to the cross rod 9, the first thread 10 is provided with a first nut 11, the first nut 11 fixes the cross rod 9 on the pull rod 8, and when the diameter of a workpiece changes, an operator can unscrew the first nut 11 to select the cross rod 9 with a proper length for replacement;
the step 12 is fixedly arranged on the pull rod 8, the step 12 is arranged between the movable block 7 and the clamp body 1, a second thread 13 is arranged at one end, far away from the first thread 10, of the pull rod 8, a second nut 14 is arranged on the second thread 13, a spring 15 is arranged on the pull rod 8, the spring 15 is arranged between the movable block 7 and the second nut 14, when the length of a machined part changes, an operator can unscrew the second nut 14 and select the pull rod 8 with a proper length for replacement, the pull rod 8 is tightly pressed and fixed by the spring 15 in the embodiment, the arrangement can ensure that the cross rod 9 can tightly press a workpiece 4, and can ensure that the spring 15 is compressed when the workpiece 4 is stressed too much, the end face 401 of the workpiece 4 is not damaged, the washer 16 is movably arranged on the pull rod 8, the compression area of the spring 15 can be increased, and the washer 16 is arranged between the spring 15 and the second nut 14;
the two telescopic blocks 17 are movably arranged on the cross rod 9, the chamfer angles 19 are arranged on the two telescopic blocks 17, the workpiece 4 can be smoothly sleeved into the expansion sleeve 3 by the chamfer angles 19 in the embodiment, the inner wall 402 of the workpiece 4 cannot be scratched or worn, the two telescopic blocks 17 are symmetrically arranged at two ends of the cross rod 9, the two telescopic blocks 17 are fixedly provided with the pressure springs 18 for resetting, and the pressure springs 18 are arranged between the telescopic blocks 17 and the cross rod 9.
Embodiment III:
the fixture body 1 is fixedly provided with an electric push rod 22 for driving the movable block 7 to move, the electric push rod 22 in this embodiment is a technology well known to those skilled in the art, and is a device commonly used in the art, which is not described in detail herein, an operator can select a proper electric push rod 22 according to parameters such as a stroke and power of the electric push rod 22, and the electric push rod 22 is fixedly arranged between the movable block 7 and the fixture body 1.
Working principle:
in the use process of the utility model, an operator sleeves a workpiece 4 on an expansion sleeve 3, in the sleeving process, a telescopic block 17 is compressed, after the workpiece 4 is placed in place, the telescopic block 17 is reset under the pressure of a pressure spring 18, an electric push rod 22 is started after the workpiece 4 is placed, at the moment, the electric push rod 22 drives a movable block 7 to move towards the direction close to the electric push rod 22, a connecting rod 701 on the movable block 7 drives a pull ring 6 to move, the pull ring 6 drives the expansion sleeve 3 to move through a shoulder 5, an inclined plane is arranged on an expansion core 2, an inclined plane corresponding to the expansion sleeve 3 is arranged on the expansion sleeve 3, when the expansion sleeve 3 axially approaches the expansion core 2, the expansion sleeve 3 is extruded under the action of the inclined plane, and because a yielding groove 20 is arranged on the expansion sleeve 3, the clearance of the yielding groove 20 is enlarged after the expansion sleeve 3 is extruded, so that the inner wall 402 of the workpiece 4 is clamped;
when the movable block 7 drives the expansion sleeve 3 to clamp the inner wall 402 of the workpiece 4, the pull rod 8 on the movable block 7 also moves synchronously, and the pull rod 8 drives the cross rod 9 to clamp the end face 401 of the workpiece 4.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a special fixture of engine cylinder block turning excircle, includes anchor clamps body (1), its characterized in that: the fixture is characterized in that an expanding core (2) is fixedly arranged on the fixture body (1), an expanding sleeve (3) is movably arranged on the expanding core (2), a workpiece (4) is movably arranged on the expanding sleeve (3), and the workpiece (4) comprises: the end face (401) and the inner wall (402), after the expansion sleeve (3) is tightly expanded, the workpiece (4) is clamped and positioned, a shoulder (5) is fixedly arranged on the expansion sleeve (3), a pull ring (6) is movably arranged on the shoulder (5), a movable block (7) is movably arranged in the clamp body (1), the movable block (7) drives the pull ring (6) to move through a plurality of connecting rods (701), a plurality of connecting rods (701) are fixedly arranged on the movable block (7), and when the connecting rods (701) drive the expansion sleeve (3) to move through the pull ring (6), the expansion sleeve (3) clamps the inner wall (402) of the workpiece (4);
the tension core (2) is provided with a pull rod assembly for clamping and positioning the end face (401) of the workpiece (4).
2. The fixture special for turning excircle of engine cylinder body according to claim 1, wherein: the pull rod assembly comprises a pull rod (8) movably arranged on the expansion core (2), the pull rod (8) is movably arranged on the axis of the expansion core (2), one end of the pull rod (8) is provided with a cross rod (9), and the cross rod (9) is arranged at one end close to the end face (401).
3. The fixture special for turning the outer circle of the engine cylinder block according to claim 2, wherein: one end of pull rod (8) is provided with first screw thread (10), first screw thread (10) set up the one end near horizontal pole (9), be provided with first nut (11) on first screw thread (10), first nut (11) are fixed horizontal pole (9) on pull rod (8).
4. A special fixture for turning excircle of engine cylinder body according to claim 3, wherein: the novel clamping device is characterized in that a step (12) is fixedly arranged on the pull rod (8), the step (12) is arranged between the movable block (7) and the clamp body (1), a second thread (13) is arranged at one end, far away from the first thread (10), of the pull rod (8), a second nut (14) is arranged on the second thread (13), a spring (15) is arranged on the pull rod (8), and the spring (15) is arranged between the movable block (7) and the second nut (14).
5. The fixture special for turning the outer circle of the engine cylinder block according to claim 4, wherein: a washer (16) is movably arranged on the pull rod (8), and the washer (16) is arranged between the spring (15) and the second nut (14).
6. The fixture special for turning the outer circle of the engine cylinder block according to claim 5, wherein: two telescopic blocks (17) are movably arranged on the transverse rod (9), the two telescopic blocks (17) are symmetrically arranged at two ends of the transverse rod (9), a compression spring (18) for resetting is fixedly arranged on the two telescopic blocks (17), and the compression spring (18) is arranged between the telescopic blocks (17) and the transverse rod (9).
7. The fixture special for turning the outer circle of the engine cylinder block according to claim 6, wherein: and chamfer angles (19) are arranged on the two telescopic blocks (17).
8. The fixture special for turning excircle of engine cylinder body according to claim 1, wherein: a plurality of abdication grooves (20) are formed in the expansion sleeve (3), and a plurality of anti-skid grooves (21) are formed in the expansion sleeve (3).
9. The fixture special for turning the outer circle of the engine cylinder block according to claim 8, wherein: the fixture is characterized in that an electric push rod (22) for driving the movable block (7) to move is fixedly arranged on the fixture body (1), and the electric push rod (22) is fixedly arranged between the movable block (7) and the fixture body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928881.8U CN219881338U (en) | 2023-04-23 | 2023-04-23 | Special fixture for turning excircle of engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928881.8U CN219881338U (en) | 2023-04-23 | 2023-04-23 | Special fixture for turning excircle of engine cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219881338U true CN219881338U (en) | 2023-10-24 |
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ID=88411222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320928881.8U Active CN219881338U (en) | 2023-04-23 | 2023-04-23 | Special fixture for turning excircle of engine cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219881338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681138A (en) * | 2024-02-02 | 2024-03-12 | 万向钱潮股份公司 | Star sleeve positioning device and method |
| CN117921414A (en) * | 2024-03-21 | 2024-04-26 | 常州明全机械有限公司 | Work piece fixing device is used in intelligent milling process |
-
2023
- 2023-04-23 CN CN202320928881.8U patent/CN219881338U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681138A (en) * | 2024-02-02 | 2024-03-12 | 万向钱潮股份公司 | Star sleeve positioning device and method |
| CN117681138B (en) * | 2024-02-02 | 2024-04-09 | 万向钱潮股份公司 | Star sleeve positioning device and method |
| CN117921414A (en) * | 2024-03-21 | 2024-04-26 | 常州明全机械有限公司 | Work piece fixing device is used in intelligent milling process |
| CN117921414B (en) * | 2024-03-21 | 2024-06-04 | 常州明全机械有限公司 | Work piece fixing device is used in intelligent milling process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 225000 Renmin West Road, gongdao Town, Yangzhou City, Jiangsu Province Patentee after: Yangzhou Deyu Automotive Parts Co.,Ltd. Country or region after: China Address before: 225000 Renmin West Road, gongdao Town, Yangzhou City, Jiangsu Province Patentee before: YANGZHOU YANGZI RIVER BAOYUN CYLINDER LINER CO.,LTD. Country or region before: China |