CN212577515U - End face positioning clamp for lathe - Google Patents
End face positioning clamp for lathe Download PDFInfo
- Publication number
- CN212577515U CN212577515U CN202020771821.6U CN202020771821U CN212577515U CN 212577515 U CN212577515 U CN 212577515U CN 202020771821 U CN202020771821 U CN 202020771821U CN 212577515 U CN212577515 U CN 212577515U
- Authority
- CN
- China
- Prior art keywords
- positioning
- hole
- lathe
- positioning sleeve
- centering
- 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.)
- Active
Links
Images
Landscapes
- Turning (AREA)
Abstract
The utility model discloses a terminal surface positioning fixture for lathe, include: the positioning sleeve is fixed with the lathe spindle, the outer circle of the positioning sleeve is matched with the inner hole of the lathe spindle, a sliding hole is formed in the positioning sleeve, and the sliding hole and the outer circle of the positioning sleeve are coaxially arranged; the centering center is arranged in the sliding hole in a sliding manner and is matched with the sliding hole, and one end of the centering center is provided with a positioning conical surface; the telescopic spring is arranged in the sliding hole, one end of the telescopic spring is connected with the centering centre, and the other end of the telescopic spring is connected with the positioning sleeve; the connecting flange is fixed with the positioning sleeve, a connecting hole is formed in the connecting flange, and the positioning conical surface is arranged in the connecting hole. The utility model provides a terminal surface positioning fixture for lathe adopts the mode that compresses tightly after fixing a position earlier, can guarantee the hole of processing back worm one end and the axiality of the excircle of excircle and the other end, saves subsequent abrasive machining process, and fixes a position the clamping step simple, has improved machining efficiency.
Description
Technical Field
The utility model belongs to the technical field of the lathe processing technique and specifically relates to a terminal surface positioning fixture for lathe is related to.
Background
The worm is a commonly used part, the processing of the inner hole at one end of the worm is generally carried out on a lathe, the coaxiality of the inner hole at one end and the excircle at the other end needs to be ensured during processing, the difficulty of lathe processing is that the precision requirement of a product is difficult to ensure during lathe processing, and the subsequent grinding processing needs to be carried out after the general lathe processing is finished. Aiming at the problems, the inventor designs a center hole centering end face positioning clamp, and the main purpose is to improve the machining precision of turning and meet the quality requirement of products, so that a machining method of turning instead of grinding is realized, the machining procedures are reduced, and the production cost is reduced.
Chinese patent application publication No. CN105364597A, published as 2016, 03, 02, entitled "a rapid positioning fixture for a numerically controlled lathe", discloses a rapid positioning fixture for a numerically controlled lathe, which comprises a fixture main body, a compression nut, a disk spring, a top rod, an elastic front tip, a positioning block, and a movable tailstock, wherein a taper hole part on one side of the fixture main body is matched with a main journal of a lathe, the top rod and the elastic front tip are located in the middle of the fixture main body, the compression nut and the disk spring are arranged on the upper and lower sides of the top rod, and the positioning block is connected to the upper and lower ends of one side of the fixture main body through M8 screws. However, the positioning clamp of the device is directly contacted with a part through the elastic front center, the part is stressed greatly in the machining process, and the part is easy to deviate, so that inaccurate positioning is caused.
Disclosure of Invention
The utility model discloses an overcome prior art in lathe processing hardly guarantee the required precision at worm both ends, still will carry out subsequent abrasive machining after the lathe processing is accomplished and just can satisfy the problem of machining precision, provide a terminal surface positioning fixture for lathe, adopt the mode that compresses tightly after fixing a position earlier, can guarantee the hole of processing back worm one end and the axiality of the excircle of excircle and the other end, save subsequent abrasive machining process, and the tight step of positioning clamp is simple, improved machining efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an end face positioning fixture for a lathe, comprising:
the positioning sleeve is fixed with the lathe spindle, the outer circle of the positioning sleeve is matched with the inner hole of the lathe spindle, a sliding hole is formed in the positioning sleeve, and the sliding hole and the outer circle of the positioning sleeve are coaxially arranged;
the centering center is arranged in the sliding hole in a sliding manner and is matched with the sliding hole, and one end of the centering center is provided with a positioning conical surface;
the telescopic spring is arranged in the sliding hole, one end of the telescopic spring is connected with the centering centre, and the other end of the telescopic spring is connected with the positioning sleeve;
the connecting flange is fixed with the positioning sleeve, a connecting hole is formed in the connecting flange, and the positioning conical surface is arranged in the connecting hole.
According to the technical scheme, the outer circle of the positioning sleeve is installed with the inner hole of the lathe spindle, before the worm is machined, the positioning conical surface is aligned to the central hole in one end of the worm, one end, close to the positioning sleeve, of the worm is enabled to keep coaxial with the lathe spindle, then under the action of a pressing force, the centering tip retracts, the end face of the worm is enabled to be pressed against the end face of the connecting flange, the worm is axially positioned, and the worm is enabled not to move due to the axial force when the inner hole is drilled. Then the worm is machined, the mode of positioning and compressing is adopted, the coaxiality of the inner hole and the outer circle of one end of the worm and the outer circle of the other end of the worm can be guaranteed, the subsequent grinding machining procedure is omitted, the positioning and clamping steps are simple, and the machining efficiency is improved. The positioning sleeve, the centering center and the connecting flange are made of materials with good abrasion resistance, and the connecting flanges with different specifications can be manufactured according to different models of the worm for switching.
Preferably, the positioning sleeve further comprises an adjusting screw, a threaded hole is formed in the positioning sleeve, the threaded hole is communicated with the sliding hole, and the adjusting screw is in threaded connection with the threaded hole; one end of the telescopic spring is connected with the positioning sleeve through an adjusting screw. Among the above-mentioned technical scheme, adjusting screw can adjust the position of expanding spring one end, and then can adjust expanding spring's spring force and the apical extension length of centering, makes anchor clamps satisfy the processing demand of different products, and spring force and the apical extension length of centering are unanimous basically when guaranteeing to process different products.
Preferably, the connecting flange and the positioning sleeve are fixed through bolts. The structure is convenient to detach and replace the connecting flange, so that the clamp is adaptive to different products.
Preferably, the connecting flange is provided with a positioning ring protrusion, the positioning sleeve is provided with a positioning ring groove, and the positioning ring protrusion is matched with the positioning ring groove. The structure can ensure the positioning precision when the connecting flange and the positioning sleeve are installed.
Preferably, a limiting ring is arranged in the connecting hole and is in contact with the end face of the centering tip. The limiting ring can prevent the centering center from sliding out of the connecting flange, and can also enable the telescopic spring to keep initial elasticity, so that the centering center has aligning force when contacting the worm to align the worm.
Preferably, a guide hole is formed in the adjusting screw, the guide hole and the sliding hole are coaxially arranged, a guide shaft is arranged at one end, close to the adjusting screw, of the centering center, the guide shaft and the sliding hole are coaxially arranged, one end of the guide shaft penetrates through the inside of the telescopic spring and is arranged in the guide hole, and the guide shaft is matched with the guide hole. The structure can increase the axial positioning length of the centering center, ensure the coaxiality of the centering center and the positioning sleeve, and further increase the positioning precision of the worm.
Preferably, the outer circle of the positioning sleeve is in transition fit with the inner hole of the lathe spindle. And the non-clearance connection can be realized by selecting transition fit, so that the positioning precision is improved.
Preferably, the adjusting screw is provided with a hexagon socket. The structure is convenient for screwing and loosening the adjusting screw.
The utility model has the advantages that: (1) the mode of positioning first and then pressing is adopted, the coaxiality of the inner hole and the outer circle at one end of the processed worm and the outer circle at the other end can be ensured, the subsequent grinding process is omitted, the positioning and clamping steps are simple, and the processing efficiency is improved; (2) the clamp can meet the processing requirements of different products, and the spring force and the extension length of the centering centre are basically consistent when different products are processed; (3) the axial positioning length of the centering center can be increased, the coaxiality of the centering center and the positioning sleeve is ensured, and the positioning precision of the worm is further increased.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the positioning device comprises a positioning sleeve 1, a sliding hole 1.1, a threaded hole 1.2, a positioning ring groove 1.3, a centering tip 2, a positioning conical surface 2.1, a guide shaft 2.2, an expansion spring 3, a connecting flange 4, a connecting hole 4.1, a positioning ring boss 4.2, a limiting ring 4.3, an adjusting screw 5, a guide hole 5.1, an inner hexagonal hole 5.2 and a bolt 6.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, an end face positioning fixture for a lathe comprises a positioning sleeve 1, a centering center 2, a telescopic spring 3, a connecting flange 4 and an adjusting screw 5; the positioning sleeve 1 is fixed with a lathe spindle, the excircle of the positioning sleeve 1 is in transition fit with the inner hole of the lathe spindle, a threaded hole 1.2 and a sliding hole 1.1 which are communicated with each other are arranged in the positioning sleeve 1, and the sliding hole 1.1 is coaxially arranged with the excircle of the positioning sleeve 1; a positioning ring groove 1.3 is arranged on the positioning sleeve 1;
the adjusting screw 5 is in threaded connection with the threaded hole 1.2; the adjusting screw 5 is provided with a guide hole 5.1 and an inner hexagonal hole 5.2, and the guide hole 5.1 and the sliding hole 1.1 are coaxially arranged;
the centering center 2 is arranged in the sliding hole 1.1 in a sliding mode, the centering center 2 is matched with the sliding hole 1.1, one end of the centering center 2 is provided with a positioning conical surface 2.1, the other end of the centering center 2 is provided with a guide shaft 2.2, the guide shaft 2.2 is coaxially arranged with the sliding hole 1.1, and one end of the guide shaft 2.2 is arranged in the guide hole 5.1;
the telescopic spring 3 is arranged between the centering centre 2 and the adjusting screw 5, the adjusting screw 5 is sleeved on the guide shaft 2.2, one end of the telescopic spring 3 is connected with the centering centre 2, and the other end of the telescopic spring 3 is connected with the adjusting screw 5;
the connecting flange 4 and the positioning sleeve 1 are fixed through a bolt 6, a positioning ring protrusion 4.2 is arranged on the connecting flange 4, and the positioning ring protrusion 4.2 is matched with the positioning ring groove 1.3; the connecting flange 4 is provided with a connecting hole 4.1, and the positioning conical surface 2.1 is arranged in the connecting hole 4.1; a limiting ring 4.3 is arranged in the connecting hole 4.1, and the limiting ring 4.3 is contacted with the end face of the centering centre 2.
According to the technical scheme, the outer circle of the positioning sleeve 1 is installed with the inner hole of the lathe spindle, before the worm is machined, the positioning conical surface 2.1 is aligned to the central hole of one end of the worm, one end, close to the positioning sleeve 1, of the worm is enabled to keep coaxial with the lathe spindle, then under the action of a pressing force, the centering tip 2 retracts, the end face of the worm is enabled to be pressed with the end face of the connecting flange 4, the worm is axially positioned, and the worm is enabled not to move due to the axial force when the inner hole is drilled. Then the worm is machined, the mode of positioning and compressing is adopted, the coaxiality of the inner hole and the outer circle of one end of the worm and the outer circle of the other end of the worm can be guaranteed, the subsequent grinding machining procedure is omitted, the positioning and clamping steps are simple, and the machining efficiency is improved. The position of 3 one ends of expanding spring can be adjusted to adjusting screw 5, and then can adjust the spring force of expanding spring 3 and the protruding length of centering top 2, makes anchor clamps satisfy the processing demand of different products, and spring force and centering top 2's protruding length are unanimous basically when guaranteeing to process different products. The guide shaft 2.2 can increase the axial positioning length of the centering center 2, ensure the coaxiality of the centering center 2 and the positioning sleeve 1 and further increase the positioning precision of the worm.
The utility model has the advantages that: (1) the mode of positioning first and then pressing is adopted, the coaxiality of the inner hole and the outer circle at one end of the processed worm and the outer circle at the other end can be ensured, the subsequent grinding process is omitted, the positioning and clamping steps are simple, and the processing efficiency is improved; (2) the clamp can meet the processing requirements of different products, and the spring force and the extension length of the centering centre are basically consistent when different products are processed; (3) the axial positioning length of the centering center can be increased, the coaxiality of the centering center and the positioning sleeve is ensured, and the positioning precision of the worm is further increased.
Claims (7)
1. An end face positioning jig for a lathe, characterized by comprising:
the positioning sleeve is fixed with the lathe spindle, the outer circle of the positioning sleeve is matched with the inner hole of the lathe spindle, a sliding hole is formed in the positioning sleeve, and the sliding hole and the outer circle of the positioning sleeve are coaxially arranged;
the centering center is arranged in the sliding hole in a sliding manner and is matched with the sliding hole, and one end of the centering center is provided with a positioning conical surface;
the telescopic spring is arranged in the sliding hole, one end of the telescopic spring is connected with the centering centre, and the other end of the telescopic spring is connected with the positioning sleeve;
the connecting flange is fixed with the positioning sleeve, a connecting hole is formed in the connecting flange, and the positioning conical surface is arranged in the connecting hole.
2. The end face positioning fixture for the lathe as claimed in claim 1, further comprising an adjusting screw, wherein a threaded hole is formed in the positioning sleeve, the threaded hole is communicated with the sliding hole, and the adjusting screw is in threaded connection with the threaded hole; one end of the telescopic spring is connected with the positioning sleeve through an adjusting screw.
3. The end face positioning fixture for the lathe as claimed in claim 1, wherein the connecting flange and the positioning sleeve are fixed by bolts.
4. The end face positioning fixture for the lathe as claimed in claim 3, wherein the connecting flange is provided with a positioning ring protrusion, the positioning sleeve is provided with a positioning ring groove, and the positioning ring protrusion is matched with the positioning ring groove.
5. The end face positioning fixture for the lathe as claimed in claim 1, wherein a limiting ring is arranged in the connecting hole, and the limiting ring is in contact with the end face of the centering tip.
6. An end face positioning fixture for a lathe as claimed in claim 1, 2, 3, 4 or 5, wherein the outer circle of the positioning sleeve is in transition fit with the inner hole of the lathe spindle.
7. The end face positioning fixture for a lathe as set forth in claim 2, wherein the adjusting screw is provided with a hexagonal socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020771821.6U CN212577515U (en) | 2020-05-11 | 2020-05-11 | End face positioning clamp for lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020771821.6U CN212577515U (en) | 2020-05-11 | 2020-05-11 | End face positioning clamp for lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212577515U true CN212577515U (en) | 2021-02-23 |
Family
ID=74640258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020771821.6U Active CN212577515U (en) | 2020-05-11 | 2020-05-11 | End face positioning clamp for lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212577515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644862A (en) * | 2020-05-11 | 2020-09-11 | 浙江恒星传动科技有限公司 | End face positioning clamp for lathe |
-
2020
- 2020-05-11 CN CN202020771821.6U patent/CN212577515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644862A (en) * | 2020-05-11 | 2020-09-11 | 浙江恒星传动科技有限公司 | End face positioning clamp for lathe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111644862A (en) | End face positioning clamp for lathe | |
| CN201295846Y (en) | Crank oil orifice positioning jig for drilling | |
| CN201455752U (en) | Jig for processing thin-wall sleeve type parts | |
| CN202622437U (en) | Finish turning fixture for external convex and varying ellipse of piston of diesel | |
| CN212577515U (en) | End face positioning clamp for lathe | |
| CN112246987A (en) | Self-adaptive positioning nut riveting tool and method | |
| CN2637042Y (en) | Expansion type internal centering elastic clamping device | |
| CN103350261A (en) | Gear hobbing clamp oriented by flat position of gear and installation and debugging method | |
| CN210548196U (en) | Novel engine gear ring finish turning inner hole clamp | |
| CN206588663U (en) | A kind of structural member turning clamp of band adjustment positioning | |
| CN106334962B (en) | A kind of turnery processing adjustable positioning device | |
| CN204748144U (en) | A car mill mandrel device for processing piston pin excircle | |
| CN211052628U (en) | Special clamp for drilling of swing arm shaft of tractor | |
| CN203936662U (en) | A kind of output shaft dicyclo positioning fixture | |
| CN211439546U (en) | Scalable through plane drive top mechanism | |
| CN211193466U (en) | Auxiliary device for cylindrical grinding of sleeve parts | |
| CN111804937A (en) | Lathe positioner for long shaft machining | |
| CN113369953A (en) | Clamp for machining excircle of shim | |
| CN209503149U (en) | A kind of gear teeth clamp | |
| CN203330535U (en) | Finish turning combined fixture for internal spline gear blank | |
| CN205415065U (en) | Special turning anchor clamps of eccentric wheel | |
| CN216575556U (en) | Positioning fixture for turning | |
| CN201596914U (en) | Main gear flange processing device | |
| CN111347349A (en) | Elastic fixture for internal grinding of plunger sleeve | |
| CN215510268U (en) | Device for grinding and measuring disc parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |