CN215432705U

CN215432705U - Clamping tool

Info

Publication number: CN215432705U
Application number: CN202121639972.7U
Authority: CN
Inventors: 方发成; 孔令坤
Original assignee: Chengdu Ruichi Precision Machinery Manufacturing Co ltd
Current assignee: Chengdu Ruichi Precision Machinery Manufacturing Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-01-07
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a clamping tool for solving the problems that the processing period of a workpiece hole is long and the hole coaxiality is difficult to control in the prior art, wherein the clamping tool is used for processing and clamping a blank hole of a workpiece, and comprises a base, a first reference part, a second reference part and a supporting part; the first reference piece is arranged on the base and provided with a first reference hole which penetrates through the first reference piece; the second reference member is mounted on the base, faces the first reference member, and has a second reference hole therethrough; the axial center of the second reference hole coincides with the axial center of the first reference hole; the supporting pieces are dispersedly arranged on the base; the height of each supporting piece is matched with the height of the base from the supporting point corresponding to the bottom surface of the workpiece blank. The utility model provides a clamping tool which simplifies the machining process of a shaft hole, shortens the machining period and improves the efficiency and the accuracy.

Description

Clamping tool

Technical Field

The utility model relates to the technical field of machining, in particular to a clamping tool for machining a rotary hole of a workpiece.

Background

I have a structure as shown in FIG. 1 for machining a workpiece having a plurality of ribs 1' arranged in parallel. Wherein, two adjacent ribbed slabs 1 ' on the left and right sides of the workpiece are provided with shaft holes 11 ', and the total number is four shaft holes 11 '. The four shaft holes 11' are required to maintain high coaxiality according to the assembly requirements of the workpiece.

However, due to the long length of the workpiece and the obstruction of the rib plate 1 'in the middle position, the four shaft holes 11' can only be processed respectively, and in the drilling process, measurement needs to be carried out at any time to ensure the coaxiality, the whole processing period is long, and the processing precision is difficult to control.

SUMMERY OF THE UTILITY MODEL

The clamping tool provided by the utility model is used for solving the problems that the workpiece hole machining period is long and the hole coaxiality is difficult to control in the prior art, and is capable of simplifying the machining process of the shaft hole, shortening the machining period and improving the efficiency and accuracy.

The technical scheme adopted by the utility model is as follows:

the utility model provides a centre gripping frock supplies work piece blank spot facing work clamping, the frock includes:

a base;

a first reference member attached to the base and having a first reference hole therethrough;

a second reference member attached to the base, opposed to the first reference member, and having a second reference hole therethrough; the axial center of the second reference hole coincides with the axial center of the first reference hole; and

the supporting pieces are dispersedly installed on the base; the height of each supporting piece is matched with the height of a supporting point corresponding to the bottom surface of the workpiece blank from the base;

after the workpiece blank is installed, the bottom surface of the workpiece blank is contacted with the top surface of the supporting piece, and two ends of the workpiece blank in the length direction are contacted with the first reference piece and the second reference piece; the first reference hole and the second reference hole respectively correspond to positions, required to be provided with shaft holes, of rib plates of adjacent workpiece blanks.

Furthermore, a plurality of threaded holes are formed in the base.

Further, at least one of the first reference member and the second reference member is detachably connected to the base.

Further, the first reference part is provided with a first supporting surface and a first abutting surface, the first supporting surface can provide support for the workpiece blank, and the first reference hole penetrates through the first abutting surface.

Further, the second reference member has a second supporting surface and a second abutting surface, the second supporting surface can provide support for the workpiece blank, and the second reference hole penetrates through the second abutting surface.

Further, the frock still includes:

the retaining member is detachably arranged on part of the top surface of the support member.

Further, the frock still includes:

the positioning piece is detachably arranged on the base and is provided with a positioning step; the positioning step can be contacted with the side wall of the workpiece blank in the width direction.

Furthermore, a locking piece is detachably arranged on the first supporting surface.

Furthermore, a locking piece is detachably arranged on the second supporting surface.

The utility model has the beneficial effects that:

in order to solve the problems that the workpiece hole machining period is long and the hole coaxiality is difficult to control in the prior art, the utility model provides a clamping tool. The tool comprises a base, a plurality of supporting pieces, a first reference piece and a second reference piece. The first reference part and the second reference part are provided with a first reference hole and a second reference hole, and the axial centers of the first reference hole and the second reference hole are overlapped. The workpiece blank is placed on a supporting limiting mechanism formed by the supporting piece, the first reference piece and the second reference piece. The first reference member and the second reference member limit the movement of the workpiece blank along the length direction of the workpiece blank. The milling cutter assembly is sleeved in the first reference hole and the second reference hole respectively, and the milling cutter travels along the axial center direction of the first reference hole and the axial center direction of the second reference hole respectively to complete the processing of the shaft hole. Because the positions of the first reference part and the second reference part and the first reference hole and the second reference hole on the first reference part and the second reference part are corrected in advance, and the correction process is free from other shielding obstacles, repeated measurement is not needed in the later-stage shaft hole machining process by the first reference hole and the second reference hole according to the machining reference, the machining process of the shaft hole is simplified, the machining period is shortened, and the efficiency and the accuracy are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a workpiece.

Fig. 2 is a first schematic structural diagram of the clamping tool in the embodiment.

Fig. 3 is a schematic structural diagram of the clamping tool in the embodiment.

Fig. 4 is a schematic working diagram of the clamping tool in the embodiment.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The general structure of a workpiece is shown in fig. 1, and the workpiece is L-shaped as a whole. The inner side of the workpiece is provided with a plurality of ribbed plates 1' arranged in parallel along the length direction. Near two sides of the workpiece in the length direction, two adjacent rib plates 1 ' are provided with shaft holes 11 ', and the total number of the two groups of the four shaft holes 11 ' is two. The four shaft holes 11' are required to maintain high coaxiality according to the assembly requirements of the workpiece.

Because the length of the workpiece is long and the rib plate 1 'in the middle is blocked, the four shaft holes 11' can only be processed respectively, and in the drilling process, the coaxiality needs to be ensured by measuring at any time, the whole processing period is long, and the processing is troublesome.

In order to solve the problems that the machining period of the workpiece hole is long and the hole coaxiality is difficult to control in the prior art, the clamping tool is provided in the embodiment and has the structure shown in the attached drawings 2 and 3. The tool comprises a base 1, a plurality of supporting pieces 2, a first reference piece 3, a second reference piece 4, a locking piece 5 and a positioning piece 6.

Wherein the base 1 provides a mounting base. The support 2 is used to support a workpiece blank. The first reference part 3 and the second reference part 4 are respectively used for providing reference for the processing of two groups of shaft holes 11'. The locking piece 5 is used for further locking the workpiece blank and preventing the workpiece blank from moving. The positioning piece 6 is used for quickly positioning and placing the workpiece blank for initial placement.

Specifically, the base 1 is provided with a plurality of threaded holes. The threaded hole is used for installing other components, and when the threaded hole is arranged to be multiple, machining requirements of workpiece blanks of different sizes can be met.

A plurality of supporting pieces 2 which are dispersedly and detachably arranged on the base 1. For example, the support member 2 is fixed by fitting a bolt and a threaded hole. The height of each supporting piece 2 is matched with the height of a supporting point corresponding to the bottom surface of the workpiece blank from the base 1. The workpiece blank is placed on the support 2 with its bottom surface in contact with the top of the support 2, forming a support.

The first reference member 3 is fixedly or detachably mounted on the base 1. The first reference member 3 has a first reference hole 31 formed therethrough. After the workpiece blank is installed, the first reference part 3 props against one end of the workpiece blank in the length direction, and the first reference hole 31 corresponds to the position, on the rib plate 1 of the adjacent workpiece blank, where the shaft hole 11' needs to be formed.

In this embodiment, the first reference member 3 has a first support surface 32 and a first abutment surface 33. As shown in fig. 3, the first supporting surface 32 and the first abutting surface 33 are two planes perpendicular to each other. The first reference hole 31 penetrates the first abutting surface 33. After the workpiece blank is placed, the bottom surface may contact the first support surface 32, and one end of the blank in the length direction may contact the first abutment surface 33. The above structure allows the first reference member 3 to also have a supporting function similar to that of the supporting member 2.

And a second reference member 4 detachably mounted on the base 1 to be opposed to the first reference member 3. The second reference member 4 has a second reference hole 41 formed therethrough. After the workpiece blank is installed, the second reference part 4 is abutted against the other end of the workpiece blank in the length direction, and the second reference hole 41 corresponds to the position of the rib plate 1 of the adjacent workpiece blank, which is required to be provided with the shaft hole 11'.

In this embodiment, the second reference member 4 has a second supporting surface 42 and a second abutting surface 43. As shown in fig. 2, the second supporting surface 42 and the second abutting surface 43 are two planes perpendicular to each other. The second reference hole 41 penetrates the second abutting surface 43. After the workpiece blank is placed, the bottom surface may contact the second support surface 42 and the other end of the blank in the length direction may contact the second abutment surface 43. The above structure allows the second reference member 4 to also have a supporting function similar to that of the supporting member 2.

Before the workpiece blank is placed, the supporting piece 2, the first reference piece 3 and the second reference piece 4 are arranged and installed according to supporting requirements, so that the axial centers of the first reference hole 31 and the second reference hole 41 are overlapped, and then the workpiece blank is placed on a supporting limiting mechanism formed by the supporting piece 2, the first reference piece 3 and the second reference piece 4. The first reference member 3 and the second reference member 4 limit the movement of the workpiece blank in the longitudinal direction thereof. The milling cutter assemblies are respectively sleeved in the first reference hole 31 and the second reference hole 41, and the milling cutter 2 'can finish the processing of the shaft hole 11' by moving along the axial center directions of the first reference hole 31 and the second reference hole 41. Because the positions of the first reference member 3, the second reference member 4 and the first reference hole 31 and the second reference hole 41 on the first reference member are corrected in advance, and no other blocking is generated in the correction process, repeated measurement is not needed in the processing process of the shaft hole 11 'by processing the processing reference of the first reference hole 31 and the second reference hole 41 in the later period, the processing process of the shaft hole 11' is simplified, the processing period is shortened, and the efficiency and the accuracy are improved.

A locking member 5 detachably mounted on the top surface of the partial support 2 and on the first support surface 32 and the second support surface 42. After the workpiece blank has been put in place, the locking element 5 is mounted on the support element 2 near the edge of the workpiece blank, with one end abutting against the workpiece blank. As shown in fig. 2, the locking member 5 is a rectangular parallelepiped block having a quadrangular frustum shape toward the end of the workpiece blank.

And the positioning piece 6 is detachably arranged on the base 1. The positioning member 6 has a positioning step 61 thereon. The positioning piece 6 is arranged on one side of the width direction of the workpiece blank, and after the positioning piece is installed, the positioning step 61 is abutted against the side wall of the width direction of the workpiece blank after the workpiece blank is placed in place, so that the area to be punched on the rib plate 1' of the workpiece blank is approximately correspondingly superposed with the first reference hole 31 and the second reference hole 41. The positioning piece 6 can roughly accurately position the workpiece blank in the early stage, and the workpiece blank can be machined after fine adjustment, so that the position adjustment time of the workpiece blank is shortened.

As shown in fig. 4, in the clamping tool in this embodiment, 3 supporting members 2 are selected, and form a supporting structure together with a first reference member 3 and a second reference member 4. The first supporting surface 32 of the first reference member 3 and the second supporting surface 42 of the second reference member 4 support two ends of two sides of the workpiece in the length direction, 1 supporting member 2 supports the middle of the bottom surface of the workpiece blank, and the two supporting members 2 support the edges of the workpiece blank in the width direction. The positioning piece 6 is arranged on the workpiece blank in the width direction for one time, and is positioned at an approximate placing position. And hoisting a workpiece blank, inserting the workpiece blank into the first reference part 3 and the second reference part 4, finely adjusting the positions, and installing the locking part 5 to process holes.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a centre gripping frock supplies work piece blank spot facing work clamping, its characterized in that, the frock includes:

a base;

2. The clamping tool according to claim 1, wherein the base is provided with a plurality of threaded holes.

3. The clamping tool of claim 1, wherein at least one of the first reference member and the second reference member is detachably connected to the base.

4. The clamping tool according to claim 1, wherein the first datum part is provided with a first supporting surface and a first abutting surface, the first supporting surface can provide support for a workpiece blank, and the first datum hole penetrates through the first abutting surface.

5. The clamping tool according to claim 1, wherein the second datum part is provided with a second supporting surface and a second abutting surface, the second supporting surface can provide support for the workpiece blank, and the second datum hole penetrates through the second abutting surface.

6. The clamping tool of claim 1, wherein the tool further comprises:

7. The clamping tool of claim 1, wherein the tool further comprises:

8. The clamping tool according to claim 4, wherein a locking member is detachably mounted on the first supporting surface.

9. The clamping tool of claim 5, wherein a locking member is detachably mounted on the second supporting surface.