CN109759858B - Work fixture - Google Patents
Work fixture Download PDFInfo
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- CN109759858B CN109759858B CN201910114219.7A CN201910114219A CN109759858B CN 109759858 B CN109759858 B CN 109759858B CN 201910114219 A CN201910114219 A CN 201910114219A CN 109759858 B CN109759858 B CN 109759858B
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- movable shaft
- expansion sleeve
- central movable
- positioning block
- sleeved
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Abstract
本发明公开了一种工装夹具，包括工装夹具本体、中心活动轴、胀套、端面定位块、外圆夹爪及锁紧螺母；工装夹具本体的轴心设置有空腔，该空腔的内壁设置有螺纹，中心活动轴位于该空腔内，且中心活动轴通过螺纹与工装夹具本体拉杆螺纹连接；胀套套设于中心活动轴上，且胀套内侧的锥面与中心活动轴一端的锥面相贴合；端面定位块套设于胀套上，外圆夹爪套设于端面定位块上，锁紧螺母套设于外圆夹爪上，且外圆夹爪的锥面与锁紧螺母内侧的锥面相贴合。相较于现有技术而言，本发明可以实现对被加工零件的双夹紧，从而使被加工零件在加工过程中不易变形，可以有效提升加工精度。
The invention discloses a tooling fixture, comprising a tooling fixture body, a central movable shaft, an expansion sleeve, an end face positioning block, an outer circular clamping claw and a locking nut; the axis of the tooling fixture body is provided with a cavity, and the inner wall of the cavity is provided A thread is provided, the central movable shaft is located in the cavity, and the central movable shaft is threadedly connected with the tie rod of the fixture body through the thread; the expansion sleeve is sleeved on the central movable shaft, and the cone surface on the inner side of the expansion sleeve is connected with the cone at one end of the central movable shaft. The surfaces fit together; the end surface positioning block is sleeved on the expansion sleeve, the outer circular clamping claw is sleeved on the end surface positioning block, the locking nut is sleeved on the outer circular clamping claw, and the conical surface of the outer circular clamping claw and the locking nut The inner cones fit together. Compared with the prior art, the present invention can realize double clamping of the parts to be processed, so that the parts to be processed are not easily deformed during the processing, and the processing accuracy can be effectively improved.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a tool clamp.
Background
The flexible gear is generally in the form of thin-wall cup, thin-wall cylinder or flat-embedded gear.
In the production process of the flexible gear, the minimum wall thickness of the thin-wall cup-shaped and thin-wall cylindrical flexible gear is 0.1mm, the flexible gear is extremely easy to deform in the actual processing process, the size of the flexible gear is unstable due to processing deformation, the processing precision of the flexible gear is influenced, and the processing yield is low.
Disclosure of Invention
The application provides a frock clamp, can solve the lower technical problem of machining precision of flexbile gear among the prior art.
Specifically, the invention provides a tool clamp which comprises a tool clamp body, a central movable shaft, an expansion sleeve, an end face positioning block, an excircle clamping jaw and a locking nut;
the tool clamp comprises a tool clamp body, wherein a cavity is formed in the axis of the tool clamp body, threads are formed in the inner wall of the cavity, a central movable shaft is located in the cavity, and the central movable shaft is in threaded connection with a pull rod of the tool clamp body through the threads;
the expansion sleeve is sleeved on the central movable shaft, and a conical surface on the inner side of the expansion sleeve is attached to a conical surface at one end of the central movable shaft;
the end face positioning block is sleeved on the expansion sleeve, the outer circle clamping jaw is sleeved on the end face positioning block, the locking nut is sleeved on the outer circle clamping jaw, and the conical surface of the outer circle clamping jaw is attached to the conical surface of the inner side of the locking nut.
Optionally, the taper corresponding to the conical surface of the inner side of the expansion sleeve is the same as the taper corresponding to the conical surface of one end of the central movable shaft.
Optionally, the taper corresponding to the conical surface of the outer clamping jaw is the same as the taper corresponding to the conical surface of the inner side of the locking nut.
Optionally, the end face positioning block is in threaded connection with the locking nut.
Optionally, the end face positioning block is provided with a gas blowing hole.
Optionally, the outer clamping jaw is provided with transverse cutting grooves distributed at intervals and longitudinal cutting grooves distributed at intervals.
Optionally, when the tool clamp is used, the workpiece to be machined is clamped between the expansion sleeve and the outer clamping jaw.
Optionally, the workpiece to be processed is a flexible gear.
Optionally, the central movable shaft, the expansion sleeve, the end face positioning block, the outer clamping jaw and the locking nut are positioned on the same straight line with the axis of the workpiece to be processed.
The tool clamp provided by the invention comprises a tool clamp body, a central movable shaft, an expansion sleeve, an end face positioning block, an excircle clamping jaw and a locking nut; the center of the tool clamp body is provided with a cavity, the inner wall of the cavity is provided with threads, the central movable shaft is positioned in the cavity, and the central movable shaft is in threaded connection with a pull rod of the tool clamp body through the threads; the expansion sleeve is sleeved on the central movable shaft, and the conical surface at the inner side of the expansion sleeve is attached to the conical surface at one end of the central movable shaft; the end face positioning block is sleeved on the expansion sleeve, the outer circle clamping jaw is sleeved on the end face positioning block, the locking nut is sleeved on the outer circle clamping jaw, and the conical surface of the outer circle clamping jaw is attached to the conical surface of the inner side of the locking nut. Compared with the prior art, the part clamping device has the advantages that the part to be machined can be clamped for the first time through the conical surface on the inner side of the expansion sleeve and the conical surface at one end of the central movable shaft, and the part to be machined can be clamped for the second time through the conical surface of the outer circle clamping jaw and the conical surface on the inner side of the locking nut, so that the part to be machined is not easy to deform in the machining process, and the machining precision can be effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic sectional view of a work fixture according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a tool holder body 10 according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the central movable shaft 20 according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the construction of an expansion sleeve 30 in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an end positioning block 40 according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an embodiment of an outer clamping jaw 50 of the present invention;
fig. 7 is a schematic structural view of a lock nut 60 according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic sectional view of a tooling fixture according to an embodiment of the present invention, in the embodiment, the tooling fixture includes a tooling fixture body 10, a central movable shaft 20, an expansion sleeve 30, an end face positioning block 40, an outer clamping jaw 50, and a lock nut 60.
Wherein, the axle center of frock clamp body 10 is provided with the cavity, and the inner wall of this cavity is provided with the screw thread, and central loose axle 20 is located this cavity, and central loose axle 20 passes through above-mentioned screw thread and frock clamp body 10 pull rod threaded connection.
The expansion sleeve 30 is sleeved on the central movable shaft 20, and the conical surface of the inner side of the expansion sleeve 30 is attached to the conical surface of one end of the central movable shaft.
The end face positioning block 40 is sleeved on the expansion sleeve 30, the outer circle clamping jaw 50 is sleeved on the end face positioning block 40, the locking nut 60 is sleeved on the outer circle clamping jaw, and the conical surface of the outer circle clamping jaw 50 is attached to the conical surface of the inner side of the locking nut.
When the tool clamp is used, a workpiece 70 to be processed is clamped between the expansion sleeve 30 and the excircle clamping jaw 50. Wherein, by rotating the central movable shaft 20, the relative position of the conical surface at one end of the central movable shaft 20 and the conical surface at the inner side of the expansion sleeve 30 is changed, so that the radial diameter of the expansion sleeve 30 is changed. Specifically, when the central movable shaft 20 moves toward the inner side of the tool holder body 10, the radial diameter of the expansion sleeve 30 increases due to the pressure of the conical surface, and at this time, the expansion sleeve 30 can fix the inner circular contour of the workpiece 70 to be processed.
Meanwhile, by rotating the lock nut 60, the relative position of the inner side of the lock nut 60 and the outer circumferential jaw 50 changes, so that the radial diameter of the outer circumferential jaw 50 changes. Specifically, when the lock nut 60 moves toward the inside of the tool holder body 10, the radial diameter of the outer clamping jaw 50 decreases due to the pressure of the tapered surface, and at this time, the outer clamping jaw 50 can fix the outer contour of the workpiece 70 to be machined.
The axes of the central movable shaft 20, the expansion sleeve 30, the end face positioning block 40, the outer clamping jaw 50 and the locking nut 60 are positioned on the same straight line with the axis of the workpiece 70 to be processed.
For better understanding of the embodiment of the present invention, referring to fig. 2, fig. 2 is a schematic structural view of a tool clamp body 10 according to the embodiment of the present invention.
Referring to fig. 3, fig. 3 is a schematic structural diagram of the central movable shaft 20 according to an embodiment of the present invention. Wherein, one end of the central active shaft is provided with a thread, and the other end is provided with a conical surface.
Referring to fig. 4, fig. 4 is a schematic structural view of the expansion sleeve 30 in the embodiment of the present invention. Wherein, the taper corresponding to the taper of the inner side of the expansion sleeve 30 is the same as the taper corresponding to the taper of one end of the central movable shaft 20. In addition, the expansion sleeve 30 is provided with longitudinal cutting grooves which are distributed at intervals, so that the expansion sleeve 30 has better elastic deformation capacity.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an end positioning block 40 according to an embodiment of the present invention.
Referring to fig. 6, fig. 6 is a schematic structural view of the outer clamping jaw 50 in the embodiment of the present invention. Wherein, the outer clamping jaw is provided with transverse cutting grooves distributed at intervals and longitudinal cutting grooves distributed at intervals, so that the outer clamping jaw 50 has better elastic deformation capability.
Referring to fig. 7, fig. 7 is a schematic structural view of a lock nut 60 according to an embodiment of the present invention. Wherein, the inner side of the locking nut 60 is provided with a conical surface, and the corresponding taper of the conical surface is the same as the corresponding taper of the conical surface of the outer clamping jaw 50. In addition, the lock nut 60 is screwed to the end surface positioning block 40.
Further, the specific installation method of the tool clamp comprises the following steps:
firstly, the expansion sleeve 30 is installed on the central movable shaft 20, then the central movable shaft 20 is installed in the tool clamp body 10, the expansion sleeve 30 is clamped after the central movable shaft 20 is fixed with the tool clamp body 10 through threads, and the precision of the excircle of the expansion sleeve 30 is corrected by a dial indicator. Further, an end face positioning block 40 is installed, the end face positioning block 40 is connected with the tool clamp body 10 through screws, then the outer circle clamping jaw 50 is sleeved on the end face positioning block 40, and after the inner hole of the outer circle clamping jaw 50 is corrected to jump, a locking nut 60 is installed.
The specific use method of the tool clamp comprises the following steps:
charging: the part to be processed is sleeved on the expansion sleeve 30 and attached to the end face positioning block 40, the radial diameter of the expansion sleeve 30 is increased by adjusting the position of the central movable shaft 20, the inner circle of the part to be processed is clamped, and then the locking nut 60 is locked, so that the radial diameter of the outer circle clamping jaw 50 is reduced, and the outer circle edge of the part to be processed is clamped. Thereafter, the next generation machined part can be machined.
Unloading: after the machining is finished, the locking nut 60 is firstly loosened, then the central movable shaft 20 is loosened, and the air blowing holes arranged on the end face positioning blocks 40 are blown by an air gun so as to take out the parts to be machined.
The workpiece to be machined can be a flexible gear, namely the tool clamp provided by the invention can be used for machining the flexible gear.
Compared with the prior art, the tool clamp provided by the embodiment of the invention can realize primary clamping of the machined part 70 through the conical surface on the inner side of the expansion sleeve 30 and the conical surface at one end of the central movable shaft 20, and can realize secondary clamping of the machined part 70 through the conical surface of the outer clamping jaw 50 and the conical surface on the inner side of the locking nut 60, so that the machined part 70 is not easy to deform in the machining process, and the machining precision can be effectively improved.
In addition, above-mentioned frock clamp still has following advantage:
the structure is simple, and the technical difficulty does not exist in the using process.
Secondly, the processing problem is high in nature, and the phenomena of difficulty in taking and assembling or clamping cannot occur.
And thirdly, the processing time can be effectively shortened, and the efficiency is improved.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In view of the above description of the tooling fixture provided by the present invention, those skilled in the art will recognize that changes may be made in the embodiments and applications of the tooling fixture according to the concepts of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910114219.7A CN109759858B (en) | 2019-02-14 | 2019-02-14 | Work fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910114219.7A CN109759858B (en) | 2019-02-14 | 2019-02-14 | Work fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109759858A CN109759858A (en) | 2019-05-17 |
| CN109759858B true CN109759858B (en) | 2021-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910114219.7A Active CN109759858B (en) | 2019-02-14 | 2019-02-14 | Work fixture |
Country Status (1)
| Country | Link |
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| CN (1) | CN109759858B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757188B (en) * | 2019-12-10 | 2025-05-23 | 昆山光腾智能机械有限公司 | Positioning fixture for numerical control drilling and milling machining of cycloidal discs |
| CN116103729A (en) * | 2021-11-09 | 2023-05-12 | 湖南特力液压有限公司 | Tooling and connection plating structure for connecting workpieces to be electroplated |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007006526B3 (en) * | 2007-02-06 | 2008-08-14 | Technische Universität Ilmenau | Device e.g. clamping bolt, for centric deformation-poor clamping of thin-walled pipe, has bracket compensation element provided at arm, and bracket fixed against jaws for pressing and clamping pipe against jaws |
| CN203184683U (en) * | 2013-03-07 | 2013-09-11 | 连云港职业技术学院 | Lathing fixture structure of thin-wall barrel-shaped parts |
| CN203579240U (en) * | 2013-11-27 | 2014-05-07 | 九江精密测试技术研究所 | Special fixture for machining inner circles of thin-walled sleeves |
| CN104858694A (en) * | 2014-02-23 | 2015-08-26 | 张鸿来 | Self-centering clamp for thin-walled part |
| CN205008929U (en) * | 2015-09-28 | 2016-02-03 | 重庆长安汽车股份有限公司 | Anchor clamps of processing solid of revolution thin wall part |
| CN206104924U (en) * | 2016-07-20 | 2017-04-19 | 江苏腾旋科技股份有限公司 | Dabber rises outward with a plurality of support point |
| CN206009896U (en) * | 2016-08-15 | 2017-03-15 | 西安伊克赛尔汽车新技术有限公司 | A kind of fixture of processing thin-wall part |
| CN206335153U (en) * | 2016-11-28 | 2017-07-18 | 中核四0四有限公司 | A kind of Thin Stainless Steel walled workpieces turning clamp |
| CN207373358U (en) * | 2017-08-02 | 2018-05-18 | 广州市昊志机电股份有限公司 | A kind of electro spindle |
| CN208451452U (en) * | 2018-07-16 | 2019-02-01 | 西安君度自动化技术有限公司 | Single thrust double-sided clamping mechanism |
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2019
- 2019-02-14 CN CN201910114219.7A patent/CN109759858B/en active Active
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| CN109759858A (en) | 2019-05-17 |
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| PB01 | Publication | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230110 Address after: 518000 101 201 301 401, Building 36, Cuigang Industrial Zone 4, Huaide Community, Fuyong Street, Bao'an District, Shenzhen, Guangdong Province Patentee after: SHENZHEN HAN'S MOTION TECHNOLOGY CO.,LTD. Address before: 518000 No. 9988 Shennan Road, Nanshan District, Shenzhen, Guangdong Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Patentee before: SHENZHEN HAN'S MOTION TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address |
Address after: 518103 Building 36, Cuigang Industrial Zone 4, Huaide Community, Fuyong Street, Bao'an District, Shenzhen City, Guangdong Province 101201301401 Patentee after: Shenzhen Shanchuan Harmonic Transmission Technology Co.,Ltd. Country or region after: China Address before: 518000 101 201 301 401, Building 36, Cuigang Industrial Zone 4, Huaide Community, Fuyong Street, Bao'an District, Shenzhen, Guangdong Province Patentee before: SHENZHEN HAN'S MOTION TECHNOLOGY CO.,LTD. Country or region before: China |
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| CP03 | Change of name, title or address |