CN211029034U

CN211029034U - Positioning fixture

Info

Publication number: CN211029034U
Application number: CN201921843911.5U
Authority: CN
Inventors: 诸成光; 孙驾; 王岩
Original assignee: Shanghai Zhikewei Machinery Manufacturing Co ltd
Current assignee: Shanghai Zhikewei Machinery Manufacturing Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-17
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to a positioning fixture, which belongs to the technical field of fixture equipment and comprises a bottom plate, wherein a plurality of positioning guide rails are arranged on the bottom plate, a first row of teeth are arranged on the surface of each positioning guide rail, a T-shaped rail groove is arranged at the bottom of each positioning guide rail, at least two pairs of trapezoidal supporting blocks are further included, the supporting blocks are connected with a first slider in the rail groove through a first bolt, the first slider is tensioned through rotating a first bolt, the supporting blocks can be effectively fixed, the opposite sides of the supporting blocks are provided with inclined planes, a V-shaped supporting platform is formed through the matching of the two opposite inclined planes to support a cylindrical part, the bottom of each supporting block is provided with a second row of teeth, the distance between the two opposite supporting blocks is finely adjusted through a matching structure between the first row of teeth and the second row of teeth, the parts with different pipe diameters can be adaptively supported, the debugging is convenient, the working efficiency is improved.

Description

Positioning fixture

Technical Field

The utility model relates to a fixture equipment, in particular to positioning fixture.

Background

In the processing process of the cylindrical part, a V-shaped positioning tool for positioning the part is generally required to be arranged. At present, most V-shaped positioning tools are composed of two V-shaped blocks which are matched with each other, and after the two V-shaped blocks are debugged, all parts in the same batch can be processed.

However, once the V-shaped positioning tool is removed, when the cylindrical part is machined again, the cylindrical part needs to be debugged again, so that the debugging between the V-shaped block and the cylindrical part is performed, and the debugging of another V-shaped block needs to be performed by using one of the debugged V-shaped blocks as a reference, which is tedious in process and wastes a lot of time.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's defect, the utility model provides a positioning fixture through setting up many positioning guide on the bottom plate, sets up trapezoidal supporting shoe on the positioning guide, and the supporting shoe cooperatees through row tooth structure with the positioning guide, and every V type supporting platform to the supporting shoe cooperation formation support part as long as to treating that the part adjustment is good this positioning fixture of processing, just can direct clamping part, the debugging time has been practiced thrift in the tool setting processing.

The technical scheme for realizing the purpose is as follows:

the utility model provides a positioning clamp, which comprises a bottom plate, wherein a plurality of positioning guide rails are arranged on the upper surface of the bottom plate in parallel, inverted T-shaped rail grooves are arranged in the positioning guide rails, and first row teeth are uniformly distributed on the tops of the positioning guide rails;

the machining fixture further comprises at least two pairs of trapezoidal supporting blocks, wherein each pair of supporting blocks are positioned at the top of the same positioning guide rail and are provided with an inclined plane, and the inclined planes of each pair of supporting blocks are symmetrically matched to form a V-shaped supporting platform for supporting the cylindrical part to be machined;

the support block is provided with a first threaded through hole which is vertically arranged, a first bolt is installed in the first threaded through hole, the support block is connected with a T-shaped first sliding block through the first bolt, the first sliding block is located in the rail groove, a gap is formed between the bottom of the first sliding block and the rail groove, and the first sliding block is tensioned by rotating the first bolt, so that the support block is effectively fixed;

the bottom of supporting shoe be equipped with first row of tooth matched with second row of tooth, can finely tune the distance between two relative supporting shoes through the cooperation of arranging the tooth structure to the diameter of adaptation treating processing cylindric part.

Furthermore, two ends of the rail groove are provided with T-shaped second sliding blocks, the top of each second sliding block is connected with a pressing plate fixing block, and the pressing plate fixing block is provided with first threaded holes which are vertically arranged;

the pressing plate, the screw rods and the positioning guide rail form a rectangular frame structure, and the upper surface of the cylindrical part is pressed through the pressing plate.

Furthermore, the pressing plate fixing block is provided with at least two second threaded through holes which are vertically arranged, second bolts are installed in the second threaded through holes, the pressing plate fixing block is connected with the second sliding block through the second bolts, and a gap is formed between the bottom of the second sliding block and the rail groove;

the bottom of clamp plate fixed block be equipped with first row of tooth matched with third row tooth through the cooperation of arranging the tooth structure, strengthen the relation of connection between clamp plate fixed block and the location guide rail.

Furthermore, a nut is installed at the upper end of the screw rod and is located above the pressing plate, and the nut is used for pressing the pressing plate on the surface of the cylindrical part.

Further, all the symmetry is installed the stereoplasm apron on every inclined plane of supporting shoe for supporting cylindric part, bear and the contact friction between the part, in case the accuracy reduces or damages, convenient change practices thrift the cost.

Has the advantages that: compared with the prior art, the utility model discloses a difference lies in, the utility model provides a positioning fixture, comprising a base plate, be equipped with many positioning guide rail on the bottom plate, positioning guide rail surface is equipped with first row of tooth, positioning guide rail bottom is equipped with T type rail groove, still including at least two pairs of trapezoidal supporting shoes, the first slider of supporting shoe in through first bolted connection rail inslot, through the taut first slider of rotatory first bolt, can effectively fix the supporting shoe, one side that two supporting shoes are relative has the inclined plane, cooperation through two relative inclined planes forms V type supporting platform and supports cylindric part, the bottom of supporting shoe is equipped with the second row of tooth, through the cooperation structure between first row of tooth and the second row of tooth, finely tune the distance between two relative supporting shoes, can adapt to support the part of different pipe diameters, the debugging is convenient, reduced and debugged between location frock and the part, And the time of the relative fit relation between the positioning tools improves the working efficiency.

Drawings

Fig. 1 is a schematic structural view of a positioning fixture according to a preferred embodiment of the present invention.

Fig. 2 is a front partial sectional view of a positioning fixture according to a preferred embodiment of the present invention.

The device comprises a base plate 1, a positioning guide rail 2, a rail groove 21, a first row of teeth 22, a supporting block 3, a first pair of supporting blocks 31, a second pair of supporting blocks 32, an inclined plane 33, a first threaded through hole 34, a first sliding block 35, a pressing plate fixing block 4, a second threaded through hole 41, a screw rod 5, a nut 51, a pressing plate 6, a cover plate 7 and parts 9.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1 and 2, the utility model provides a positioning fixture, which comprises a bottom plate 1, wherein four positioning guide rails 2 are arranged on the upper surface of the bottom plate 1 in parallel, inverted T-shaped rail grooves 21 are arranged in the positioning guide rails 2, and first row teeth 22 are uniformly distributed on the top of the positioning guide rails 2;

the machining fixture is characterized by further comprising two pairs of trapezoidal supporting blocks 3 which respectively form supports at two ends of the part 9, wherein a first pair of supporting blocks 31 is positioned at the top of the first positioning guide rail 2, a second pair of supporting blocks 32 is positioned at the top of the third positioning guide rail 2, the supporting blocks 3 are provided with inclined planes 33, and the inclined planes 33 of each pair of supporting blocks 3 are symmetrically matched to form a V-shaped supporting platform for supporting the cylindrical part 9 to be machined;

obviously, according to the actual processing situation, three or five or six positioning guide rails 2 can be arranged to adapt to the processing of various cylindrical parts 9 with different lengths, and the number of the supporting blocks 3 can also be three or even four pairs to play a better supporting role;

the supporting block 3 is provided with a first threaded through hole 34 which is vertically arranged, a first bolt is installed in the first threaded through hole 34, the supporting block 3 is connected with a T-shaped first sliding block 35 through the first bolt, the first sliding block 35 is located in the rail groove 21, a gap is formed between the bottom of the first sliding block 35 and the rail groove 21, and the first sliding block 35 is tightened by rotating the first bolt, so that the supporting block 3 is effectively fixed;

the bottom of the supporting block 3 is provided with a second row of teeth matched with the first row of teeth 22, and the distance between two opposite supporting blocks 3 can be finely adjusted through the matching of the row of teeth structures so as to adapt to the diameter of the cylindrical part 9 to be processed.

As a preferred embodiment of the present invention, T-shaped second sliders 23 are disposed at both ends of the rail groove 21, a pressing plate fixing block 4 is connected to the top of the second slider 23, and the pressing plate fixing block 4 is provided with first threaded holes which are vertically disposed;

the device is characterized by further comprising two pairs of screw rods 5, wherein a first pair of screw rods 5 are arranged in first threaded holes of pressure plate fixing blocks 4 on a first positioning guide rail 2, a second pair of screw rods 5 are arranged in first threaded holes of pressure plate fixing blocks 4 on a third positioning guide rail 2, a pressure plate 6 is sleeved at the top of each pair of screw rods 5, a rectangular frame structure is formed among the pressure plate 6, the same pair of screw rods 5 and the positioning guide rails 2, the upper surfaces of cylindrical parts 9 are pressed through the pressure plate 6, and the supporting blocks 3 support the lower surfaces of the parts 9, so that the parts 9 are fixed;

preferably, the pressing plate fixing block 4 is provided with two second threaded through holes 41 which are vertically arranged and are symmetrically arranged at the end parts, respectively, a second bolt is installed in each second threaded through hole 41, the pressing plate fixing block 4 is connected with the second sliding block 23 through the second bolt, a gap is formed between the bottom of the second sliding block 23 and the rail groove 21, and the second sliding block 23 is tightened by rotating the second bolt, so that the pressing plate fixing block 4 is effectively fixed;

the bottom of the pressing plate fixing block 4 is provided with a third row of teeth matched with the first row of teeth 22, and the connection relation between the pressing plate fixing block 4 and the positioning guide rail 2 is enhanced through the matching of the row of teeth structures.

Preferably, a nut 51 is mounted on the upper end of the screw rod 5, and the nut 51 is located above the pressing plate 6 and used for pressing the pressing plate 6 on the surface of the cylindrical part 9.

Preferably, each pair of supporting blocks 3 is symmetrically provided with a hard cover plate 7 on the inclined surface 33 for supporting the cylindrical part 9 and bearing the contact friction with the part 9, so that the replacement is convenient and the cost is saved once the accuracy is reduced or damaged.

It should be noted that the terms "first and second" in the present invention are used for descriptive purposes only, do not denote any order, are not to be construed as indicating or implying any relative importance, and are to be interpreted as names.

The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.

Claims

1. A positioning fixture comprises a bottom plate and is characterized in that a plurality of positioning guide rails are arranged on the upper surface of the bottom plate in parallel, inverted T-shaped rail grooves are formed in the positioning guide rails, and first rows of teeth are uniformly distributed on the tops of the positioning guide rails;

the positioning guide rail is characterized by further comprising at least two pairs of trapezoidal supporting blocks, wherein each pair of supporting blocks is positioned at the top of the same positioning guide rail and is provided with an inclined plane, and the inclined planes of each pair of supporting blocks are symmetrically matched to form a V-shaped supporting platform;

the support block is provided with a first threaded through hole which is vertically arranged, a first bolt is installed in the first threaded through hole, the support block is connected with a T-shaped first sliding block through the first bolt, the first sliding block is located in the rail groove, and a gap is formed between the bottom of the first sliding block and the rail groove;

and a second row of teeth matched with the first row of teeth are arranged at the bottom of the supporting block.

2. The positioning jig of claim 1, wherein:

the two ends of the rail groove are provided with T-shaped second sliding blocks, the top of each second sliding block is connected with a pressing plate fixing block, and the pressing plate fixing block is provided with first threaded holes which are vertically arranged;

the positioning guide rail structure is characterized by further comprising a plurality of pairs of screw rods corresponding to the supporting blocks, the screw rods are installed in first threaded holes of pressing plate fixing blocks on the positioning guide rails where the supporting blocks are located, a pressing plate is sleeved on the top of each pair of screw rods, and the pressing plate, the screw rods and the positioning guide rails form a rectangular frame structure.

3. The positioning jig of claim 2, wherein:

the pressing plate fixing block is provided with at least two second threaded through holes which are vertically arranged, second bolts are installed in the second threaded through holes, the pressing plate fixing block is connected with the second sliding block through the second bolts, and a gap is formed between the bottom of the second sliding block and the rail groove;

the bottom of clamp plate fixed block be equipped with first row of tooth matched with third row of tooth.

4. The positioning jig of claim 2, wherein:

and a nut is installed at the upper end of the screw rod and is positioned above the pressing plate.

5. The positioning jig of claim 1, wherein:

hard cover plates are symmetrically arranged on the inclined planes of each pair of supporting blocks.