CN220481488U

CN220481488U - Tool chuck

Info

Publication number: CN220481488U
Application number: CN202322019747.9U
Authority: CN
Inventors: 沈友平; 吴益华
Original assignee: Shenzhen Guochuanghuikang Medical Device Technology Co ltd
Current assignee: Shenzhen Guochuanghuikang Medical Device Technology Co ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-02-13
Anticipated expiration: 2033-07-28

Abstract

The application provides a tool chuck which comprises a clamping sleeve, an elastic clamping head, a nut and a spring; the clamping sleeve comprises a first end and a second end which deviate from each other in the axial direction, the direction of the first end towards the second end is the first direction, the first end is provided with a clamping opening which is gradually reduced along the first direction, an elastic clamping head is arranged at the clamping opening, a nut is in threaded connection with the periphery of the first end, a spring is arranged in the clamping sleeve, an inner cavity for clamping a workpiece is formed in one side of the elastic clamping head, when the elastic clamping head clamps the workpiece, one end of the elastic clamping head deviates from the second end and abuts against the nut, and the other end of the elastic clamping head faces against the spring. In this application, frock chuck is at the operation of pressing from both sides tightly and unclamping all simple and laborsaving, and the setting of spring can play limiting displacement to the stroke of elastic clamping head, avoids elastic clamping head to excessively stretch into the clamping sleeve to lead to the difficult convenience of taking out of elastic clamping head joint in the clamping sleeve, also can promote the work piece when breaking away from the frock chuck.

Description

Tool chuck

Technical Field

The application relates to the technical field of tool clamps, in particular to a tool chuck.

Background

When the workpiece is machined, a fixture is often used for clamping and fixing the workpiece, and the convenience and rationality of the fixture determine the clamping efficiency and quality. In order to maintain stable clamping with a workpiece, a large friction force is generally generated between the clamping head and the part, so that after the workpiece is machined, the clamping head is hard to reset and loosen manually, and the clamping head is easy to damage due to careless operation.

For this reason, it is necessary to provide a tooling clamp that is simple and labor-saving to operate when clamping and unclamping.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a tooling chuck which is easy to operate and labor-saving when clamping and unclamping.

According to an embodiment of the present utility model, there is provided a first aspect of: the tool chuck comprises a clamping sleeve, an elastic clamping head, a nut and a spring; the clamping sleeve comprises a first end and a second end which are deviated in the axial direction, the direction of the first end towards the second end is in a first direction, the first end is provided with a clamping opening which is gradually reduced along the first direction, an elastic clamping head is arranged at the clamping opening, a nut is in threaded connection with the periphery of the first end, a spring is arranged in the clamping sleeve, an inner cavity for clamping a workpiece is formed in one side of the elastic clamping head, and when the elastic clamping head clamps the workpiece, the elastic clamping head is deviated from one end of the second end and is propped against the nut, and the elastic clamping head is oriented towards one end of the second end and is propped against the spring.

In a preferred embodiment, the circumferential contour of the elastic clamping head is adapted to the contour of the clamping opening.

In a preferred embodiment, the elastic clamping head is provided with at least two first grooves towards one end of the second end, the first grooves extending in a direction opposite to the first direction.

In a preferred embodiment, the first grooves are uniformly distributed on the elastic clamping head in the circumferential direction.

In a preferred embodiment, the end of the elastic clamping head facing away from the second end is provided with at least two second grooves, which extend in the first direction.

In a preferred embodiment, the second grooves are uniformly distributed on the elastic clamping head in the circumferential direction.

In a preferred scheme, one end of the elastic clamping head, which is away from the second end, is provided with second grooves, the number of which corresponds to that of the first grooves, the second grooves extend along the first direction, the second grooves are uniformly distributed on the elastic clamping head along the circumferential direction, and any one of the first grooves is uniformly distributed between two adjacent second grooves.

In a preferred embodiment, the side wall of the elastic clamping head is provided with an inwardly extending portion, one axial end of the extending portion abuts against the spring, and the other axial end of the extending portion is used for abutting against a workpiece.

In a preferred scheme, the tool chuck further comprises a fixing piece located on one side, away from the elastic clamping head, of the spring, wherein the fixing piece comprises a connecting portion extending into the clamping sleeve, and the connecting portion is in threaded connection with the clamping sleeve.

In a preferred aspect, along a first direction, the nut has a first opening and a second opening in sequence, the first opening is smaller than the second opening, the elastic clamping head portion passes through the second opening, and an outer diameter of an end of the elastic clamping head, which is away from the second end, is larger than a caliber of the first opening.

The utility model has the following beneficial effects:

1. the user can rotate the nut to enable the nut to push the elastic clamping head to move along the first direction, and the elastic clamping head is gradually compressed in the clamping opening gradually shrinking along the first direction, so that a workpiece in the inner cavity is clamped; the extrusion effect to the elastic clamping head can also be reduced through reversing the nut after the workpiece processing is finished, at this moment, under the effect of the spring, the elastic clamping head can be automatically ejected out along the reverse direction of the first direction so as to carry out the next clamping, the workpiece replacement efficiency is improved, and the tool clamping head is simple and labor-saving in clamping and loosening operations.

2. The setting of spring can play limiting displacement to the stroke of elastic clamping head, avoids elastic clamping head excessively to stretch into the clamping sleeve to lead to elastic clamping head joint difficult taking out in the clamping sleeve, also can avoid clamping sleeve to need set up the dismantlement hole in the side, perhaps need come manual dismantlement with the help of other instruments when dismantling, has promoted the convenience of work piece when breaking away from the frock chuck greatly.

Drawings

FIG. 1 is a perspective view of a tool chuck according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a tool chuck according to an embodiment of the present utility model;

fig. 3 is a schematic cross-sectional view of a tool chuck according to an embodiment of the utility model.

Reference numerals: 10. a clamping sleeve; 11. a first end; 111. a clamping opening; 12. a second end; 20. an elastic clamping head; 21. a first trench; 22. a second trench; 23. an inner cavity; 24. an extension; 30. a screw cap; 31. a first opening; 32. a second opening; 40. a spring; 50. a fixing member; 51. a connection part; f1, a first direction; 60. a workpiece;

Detailed Description

In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It is noted that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "are used to refer to the terms" length "," width "," upper "," lower "," front "," rear "," left "," right "," vertical "," and "lower".

The orientation or positional relationship indicated by horizontal "," vertical "," top "," bottom "," inner "," outer ", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or components referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.

Referring to fig. 1 to 3, an embodiment of the present utility model provides a tool chuck, which includes a clamping sleeve 10, an elastic clamping head 20, a nut 30, and a spring 40. The clamping sleeve 10 includes a first end 11 and a second end 12, wherein the first end and the second end 12 deviate from each other in an axial direction of the clamping sleeve 10, a direction of the first end 11 towards the second end 12 is a first direction F1, the first end 11 is provided with a clamping opening 111, the clamping opening 111 gradually reduces along the first direction F1, an elastic clamping head 20 is mounted at the clamping opening 111, an external thread is arranged at the periphery of the first end 11 and is used for being in threaded connection with a nut 30, a spring 40 is mounted in the clamping sleeve 10, an inner cavity 23 for clamping a workpiece 60 is formed on one side of the elastic clamping head 20, which deviates from the second end 12, when the elastic clamping head 20 clamps the workpiece 60, the elastic clamping head 20 abuts against the nut 30, and an end of the elastic clamping head 20 abuts against the spring 40 towards the second end 12.

In this embodiment, the tool chuck has the following beneficial effects:

1. the user may clamp the workpiece 60 in the cavity 23 by rotating the nut 30 such that the nut 30 pushes the elastic clamping head 20 to move in the first direction F1, and the elastic clamping head 20 is gradually compressed in the clamping opening 111 gradually narrowed in the first direction F1; the extrusion action on the elastic clamping head 20 can be reduced by reversing the nut 30 after the workpiece 60 is machined, and at the moment, under the action of the spring 40, the elastic clamping head 20 can automatically pop out along the reverse direction of the first direction F1 so as to carry out the next clamping, thereby increasing the efficiency of workpiece 60 replacement, and the tool clamping head is simple and labor-saving in clamping and loosening operations.

2. The setting of spring 40 can play limiting displacement to the stroke of elastic clamping head 20, avoids elastic clamping head 20 excessively to stretch into clamping sleeve 10 to lead to elastic clamping head 20 joint difficult taking out in clamping sleeve 10, also can avoid clamping sleeve 10 to need set up the dismantlement hole in the side, perhaps need dismantle with the help of other instruments manual when dismantling, has promoted the convenience of work piece 60 when breaking away from the frock chuck greatly.

In a possible embodiment, the side profile of the elastic clamping head 20 is adapted to the shape of the clamping opening 111, wherein the outer configuration of the elastic clamping head 20 may be of the truncated cone type, of the prismatic table type, or of a combination of both. When the outer configuration of the elastic clamping head 20 is of the truncated cone type, the outer contour of the cross section of the elastic clamping head 20 is circular, the outer diameter of which is gradually reduced in the first direction F1; when the outer configuration of the elastic clamping head 20 is of a prismatic table type, the outer profile of the cross section of the elastic clamping head 20 may be rectangular or polygonal, the elastic clamping head 20 may include at least one pair of oppositely disposed shrink walls, at least one pair of shrink walls being gradually folded along the first direction F1, or the elastic clamping head 20 may include a plurality of shrink walls distributed along the circumferential direction, the plurality of shrink walls being gradually folded along the first direction F1.

In a preferred embodiment, the outer profile of the cross section of the resilient clamping head 20 is a regular polygon in order to force the workpiece 60 evenly.

In a preferred embodiment, and with reference to FIG. 2, the outer profile of the cross section of the resilient clamping head 20 is circular in order to provide more uniform force to the workpiece 60.

In a preferred embodiment, the elastic clamping head 20 is provided with at least two first grooves 21 towards the end of the second end 12, the first grooves 21 extending in the opposite direction to the first direction F1, the arrangement of the first grooves 21 being such that the elastic clamping head 20 is adapted to undergo a shrinkage deformation towards the end of the second end 12 for clamping the workpiece 60.

In a preferred embodiment, the first grooves 21 are uniformly distributed on the elastic clamping head 20 along the circumferential direction, so that the deformation of the elastic clamping head 20 is uniform, and the stress of the workpiece 60 is uniform.

In a preferred embodiment, the end of the resilient clamping head 20 facing away from the second end 12 is provided with at least two second grooves 22, the second grooves 22 extending in the first direction F1, the arrangement of the second grooves 22 being such that the end of the resilient clamping head 20 facing away from the second end 12 is adapted to be subjected to a shrinkage deformation for clamping the workpiece 60.

In a preferred embodiment, the second grooves 22 are uniformly distributed on the elastic clamping head 20 along the circumferential direction, so that the deformation of the elastic clamping head 20 is uniform and the stress of the workpiece 60 is uniform.

In a preferred embodiment, the first grooves 21 and the arrangement of the first grooves 21 in the above embodiment are combined, the first grooves 21 and the second grooves 22 are uniformly distributed on the elastic clamping head 20 along the circumferential direction, and any one of the first grooves 21 is uniformly distributed between two adjacent second grooves 22, and the first grooves 21 and the second grooves 22 are uniformly distributed on the elastic clamping head 20, so that the deformation of the elastic clamping head 20 and the stress of the workpiece 60 are more uniform.

Preferably, referring to fig. 2, the number of the first grooves 21 and the second grooves 22 is 3.

It will be appreciated that typical chucks are typically three-jaw chucks, which, due to their small bearing surfaces, tend to grip the workpiece 60, particularly those with higher requirements on the appearance, with non-negligible imperfections being externally generated. In this embodiment, the first groove 21 and the second groove 22 capable of realizing shrinkage of the elastic clamping head 20 are strip-shaped and have smaller width, the cross section of the inner cavity 23 is approximately circular, the contact surface between the inner periphery of the elastic clamping head 20 and the workpiece 60 is larger, and the surface of the workpiece 60 can be protected to the greatest extent.

In a preferred embodiment, to accommodate contraction of the elastic clamping head 20, a through hole is provided in the middle of the elastic clamping head 20, and the through hole communicates with both axial ends of the elastic clamping head 20.

In a preferred embodiment, the side wall of the resilient clamping head 20 is provided with an inwardly extending extension 24, which extension 24 may preferably be annular in cross section, with one axial end of the extension 24 abutting the spring 40 and the other axial end of the extension 24 being adapted to abut the workpiece 60.

In a preferred embodiment, the tool holder further comprises a fixing member 50, the fixing member 50 being located on the side of the spring 40 facing away from the elastic clamping head 20, the fixing member 50 comprising a connecting portion 51 extending into the clamping sleeve 10, the connecting portion 51 being provided with external threads on its peripheral side, the clamping sleeve 10 being provided with internal threads on the inner periphery of the second end 12, so that the connecting portion 51 can be mounted in the clamping sleeve 10 by means of a threaded connection, wherein the fixing portion can be fixed on a machine or a tool.

In a preferred embodiment, the nut 30 has a first opening 31 and a second opening 32 in sequence along the first direction F1, the first opening 31 being smaller than the second opening 32, so that the elastic clamping head 20 can partially penetrate the second opening 32 and extend into the nut 30, and the outer diameter of the end of the elastic clamping head 20 facing away from the second end 12 is larger than the caliber of the first opening 31, so that the elastic clamping head 20 cannot penetrate the second opening 32 and can abut against the nut 30, and thus the rotation of the nut 30 can drive the movement of the elastic clamping head 20.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The tool chuck is characterized by comprising a clamping sleeve, an elastic clamping head, a nut and a spring; the clamping sleeve comprises a first end and a second end which are deviated in the axial direction, the direction of the first end towards the second end is in a first direction, the first end is provided with a clamping opening which is gradually reduced along the first direction, an elastic clamping head is arranged at the clamping opening, a nut is in threaded connection with the periphery of the first end, a spring is arranged in the clamping sleeve, an inner cavity for clamping a workpiece is formed in one side of the elastic clamping head, and when the elastic clamping head clamps the workpiece, the elastic clamping head is deviated from one end of the second end and is propped against the nut, and the elastic clamping head is oriented towards one end of the second end and is propped against the spring.

2. The tooling clamp according to claim 1, wherein a peripheral profile of the resilient clamping head is adapted to a profile of the clamping opening.

3. The tool chuck according to claim 1, wherein the elastic clamping head is provided with at least two first grooves towards one end of the second end, the first grooves extending in a direction opposite to the first direction.

4. A tool chuck according to claim 3 in which the first grooves are circumferentially evenly distributed on the resilient clamping head.

5. The tool chuck according to any one of claims 1 to 4, wherein the end of the resilient clamping head facing away from the second end is provided with at least two second grooves extending in a first direction.

6. The tooling clamp according to claim 5, wherein the second grooves are uniformly circumferentially distributed on the resilient clamping head.

7. The tool chuck according to claim 4, wherein one end of the elastic clamping head, which is away from the second end, is provided with second grooves, the number of which corresponds to that of the first grooves, the second grooves extend along the first direction, the second grooves are uniformly distributed on the elastic clamping head along the circumferential direction, and any one of the first grooves is uniformly distributed between two adjacent second grooves.

8. A tool chuck according to any one of claims 1, 2, 3, 4 and 7 in which the side wall of the resilient clamping head is provided with an inwardly extending extension, one axial end of the extension being in abutment with the spring and the other axial end of the extension being in abutment with a workpiece.

9. The tool holder according to any one of claims 1, 2, 3, 4, 7, further comprising a securing member located on a side of the spring facing away from the resilient clamping head, the securing member comprising a connecting portion extending into the clamping sleeve, the connecting portion being threadably connected to the clamping sleeve.

10. The tool chuck according to any one of claims 1, 2, 3, 4, 7, wherein the nut has a first opening and a second opening in sequence in a first direction, the first opening being smaller than the second opening, the resilient clamping head portion passing through the second opening, and an outer diameter of an end of the resilient clamping head facing away from the second end being larger than a caliber of the first opening.