CN204486828U - A kind of end face tension clamp structure - Google Patents
A kind of end face tension clamp structure Download PDFInfo
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- CN204486828U CN204486828U CN201520019801.2U CN201520019801U CN204486828U CN 204486828 U CN204486828 U CN 204486828U CN 201520019801 U CN201520019801 U CN 201520019801U CN 204486828 U CN204486828 U CN 204486828U
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- claw
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Abstract
The utility model relates to a kind of end face tension clamp structure, solves large, that thin and thick the is little workpiece of chuck radial direction clamping external diameter and workpiece can be caused to produce distortion, affect the problem of workpiece qualification rate.This device comprises chuck, chuck front end face is provided with some claws, it is characterized in that: also comprise an annular holder, described claw supports the endoporus hole wall being clamped in annular holder outward, workpiece rear end face to be processed is resisted against the front end face of annular holder, workpiece rear end face is evenly distributed with some screwed holes, and on described annular holder, screwed hole each with workpiece is corresponding is provided with some through holes, and turnbuckle is connected with the screwed hole of workpiece is strained and fixed through the through hole of annular holder.The utility model adopts annular holder conversion, makes chuck change axial tightening into the clamping of the radial direction of workpiece, avoids the distortion of workpiece under radial nip stress effect.
Description
Technical field
The utility model relates to a kind of frock clamp, particularly a kind of end face tension clamp structure.
Background technology
When lathe process, need to grip workpiece end with chuck, then carry out revolution processing.Traditional chuck holding workpiece generally adopts and clamps to the mode of stretching to clamping or internal orifice dimension at outer circle diameter.During large for some external diameters, thin and thick is little piece-holder, no matter adopt cylindrical clamp or endoporus stretching mode clamps, there is radial chucking power in capital, Stress Release after completing processing, product will inevitably produce distortion, when deforming more than error allowed band, product also can be caused defective, and large for external diameter, that thin and thick is little workpiece, this distortion is particularly serious.Meanwhile, when adopting aforesaid way clamping, clip position can leave the clamping marking, for the part that some surface finish requirements are high, may have a strong impact on product quality.
Summary of the invention
The purpose of this utility model is that solving large, that thin and thick the is little workpiece of chuck radial direction clamping external diameter can cause workpiece to produce distortion, affects the problem of workpiece qualification rate, provides a kind of end face to strain clamp structure.
The utility model solves the technical scheme that its technical problem adopts: a kind of end face tension clamp structure, comprise chuck, chuck front end face is provided with some claws, also comprise an annular holder, described claw supports the endoporus hole wall being clamped in annular holder outward, workpiece rear end face to be processed is resisted against the front end face of annular holder, workpiece rear end face is evenly distributed with some screwed holes, on described annular holder, screwed hole each with workpiece is corresponding is provided with some through holes, and turnbuckle is connected with the screwed hole of workpiece is strained and fixed through the through hole of annular holder.Fixing by annular holder conversion between this programme claw and workpiece, first with the axial bail wire clamp of claw, adopt axial turnbuckle to be strained and fixed between annular holder and workpiece end face, make fixture not produce radial pressure to workpiece, avoid fixture to produce distortion.Meanwhile, it also avoid fixture and produce clamping vestige on the surface of workpiece.Especially the workpiece large for yielding external diameter, wall thickness is little, effectively can avoid workpiece deformation.
As preferably, stagger mutually in the described position of annular holder through hole and the position of claw.Turnbuckle position and jaw position stagger mutually, facilitate the fixing operation of turnbuckle.
As preferably, the root of described claw has the step of outwardly convex, and step surface exceeds forward the surface of chuck, and the rear end face of annular holder is resisted against on step surface.Enough operating spaces are reserved by the step of claw between annular holder and chuck surface.
As preferably, the T-shaped chute that be provided with some radial direction corresponding to claw on described chuck.
As preferably, described claw is evenly distributed with three in chuck perimeter direction, and annular holder is circumferentially evenly being provided with six through holes, the annular holder between adjacent claw is arranged two through holes.
The utility model adopts annular holder conversion, makes chuck change axial tightening into the clamping of the radial direction of workpiece, avoids the distortion of workpiece under radial nip stress effect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is the side view of the utility model Fig. 1.
Fig. 3 is the sectional structure chart at A-O-A place in the utility model Fig. 1.
In figure: 1, chuck, 2, T-shaped chute, 3, claw, 4, annular holder, 5, workpiece, 6, turnbuckle.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is further illustrated below by specific embodiment.
Embodiment: a kind of end face tension clamp structure, as shown in Figure 1.This device comprises chuck 1, and chuck front surface arranges a claw 3 around axis every 120 degree, correspondingly with claw on chuck is provided with three radial T-shaped chutes 2.Claw 3 is clamped with annular holder 4, claw clamps at the endoporus hole wall stretching of annular holder, the root of claw 3 is outwardly provided with the step of L shape, step surface exceeds forward the front surface of chuck 1, the rear end face of annular holder 4 is resisted against on the step surface of claw, utilize the height of step, between chuck 1 and annular holder 4, reserve operating space.
As shown in Figure 1, 2, 3, workpiece 5 is external diameter 840mm, the thin-wall case of wall thickness 37mm, the screwed hole of 6 axis is circumferentially evenly equipped with at the rear end face of workpiece 5, workpiece 5 is resisted against annular holder 4 front end face, correspondingly with workpiece screwed hole on annular holder 4 be provided with 6 through holes, turnbuckle 6 is connected with screwed hole through through hole, and be strained and fixed workpiece 5.
As shown in Figure 1, position and the jaw position of turnbuckle stagger mutually, and distribute between adjacent claw two turnbuckles.Indicate turnbuckle position in Fig. 1, under actual conditions, turnbuckle cannot be seen in the visual angle of Fig. 1, is only the sign of position in Fig. 1.
Employing annular holder is changed, and changes the radial direction clamping of claw to workpiece into axial tightening clamping, avoids workpiece deformation.
Claims (5)
1. an end face tension clamp structure, comprise chuck, chuck front end face is provided with some claws, it is characterized in that: also comprise an annular holder, described claw supports the endoporus hole wall being clamped in annular holder outward, and workpiece rear end face to be processed is resisted against the front end face of annular holder, and workpiece rear end face is evenly distributed with some screwed holes, on described annular holder, screwed hole each with workpiece is corresponding is provided with some through holes, and turnbuckle is connected with the screwed hole of workpiece is strained and fixed through the through hole of annular holder.
2. a kind of end face tension clamp structure according to claim 1, is characterized in that: stagger mutually in the described position of annular holder through hole and the position of claw.
3. a kind of end face tension clamp structure according to claim 1 and 2, is characterized in that: the root of described claw has the step of outwardly convex, and step surface exceeds forward the surface of chuck, and the rear end face of annular holder is resisted against on step surface.
4. a kind of end face tension clamp structure according to claim 1 and 2, is characterized in that: the T-shaped chute that be provided with some radial direction corresponding to claw on described chuck.
5. a kind of end face tension clamp structure according to claim 1 and 2, it is characterized in that: described claw is evenly distributed with three in chuck perimeter direction, annular holder is circumferentially evenly being provided with six through holes, the annular holder between adjacent claw is arranged two through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520019801.2U CN204486828U (en) | 2015-01-13 | 2015-01-13 | A kind of end face tension clamp structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520019801.2U CN204486828U (en) | 2015-01-13 | 2015-01-13 | A kind of end face tension clamp structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204486828U true CN204486828U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520019801.2U Active CN204486828U (en) | 2015-01-13 | 2015-01-13 | A kind of end face tension clamp structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204486828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262249A (en) * | 2018-12-14 | 2019-01-25 | 清华大学 | A kind of Bolt Screw Down Method, bolt screwing machine and nut runner system |
| CN112388356A (en) * | 2020-11-13 | 2021-02-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Thin-wall deep-cavity ring type part turning clamp and clamping method |
-
2015
- 2015-01-13 CN CN201520019801.2U patent/CN204486828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262249A (en) * | 2018-12-14 | 2019-01-25 | 清华大学 | A kind of Bolt Screw Down Method, bolt screwing machine and nut runner system |
| CN112388356A (en) * | 2020-11-13 | 2021-02-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Thin-wall deep-cavity ring type part turning clamp and clamping method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |