CN206677460U

CN206677460U - A kind of bolt positioning fixture structure

Info

Publication number: CN206677460U
Application number: CN201720358645.1U
Authority: CN
Inventors: 杨旭乐; 崔占生; 解学敏
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2017-04-07
Filing date: 2017-04-07
Publication date: 2017-11-28
Anticipated expiration: 2027-04-07

Abstract

A kind of bolt positioning fixture structure, it includes base, template and positioning unit, wherein：The positioning unit is U-shaped and has both sides edge and base, the side edge of the edge and workpiece touches positioning, there is positioning hole on the base, the bolt phase location fit of the positioning hole and the workpiece, the clamp structure positions the smallclothes of only bolt by positioning hole and mating edge together, improves the positioning precision of this smallclothes.

Description

A kind of bolt positioning fixture structure

Technical field

The utility model is on a kind of bolt positioning fixture structure.

Background technology

Automobile using soldering cramping apparatus is a kind of frock when producing product, and it can be in the face of white body part, hole, Bian Dengte Levy and the mechanical structures such as positioning, clamping are set on element, limit feature six-freedom degree, ensure repeated position of the part on fixture Precision is put, ensures white body precision and quality stability.

The preferred hole of in general parts does not have hole as positioning primary standard above some smallclothes, can only choose other Element, such as side is as positioning datum.

For a welding assembly, prioritizing selection hole positions when its internal part positions, but does not have hole for some, The smallclothes of one bolt of projection welding, positioning are typically chosen side positioning.

Prior art due to stamping parts side when making tolerance (± 0.5mm) compared with hole (be usually 0 or ± 0.3mm) more Greatly, and the positioning of simple side can not be entirely limited the six-freedom degree of part, so positioning precision is relatively low, may influence bolt Positional precision.

Utility model content

The utility model provides a kind of bolt positioning fixture structure, and it includes base, template and positioning unit, wherein：Institute It is U-shaped and there is both sides edge and base to state positioning unit, the side edge of the edge and workpiece touches positioning, on the base With positioning hole, the bolt phase location fit of the positioning hole and the workpiece.

The clamp structure is by the hole of the Design Orientation bolt on fixture, and mating edge positions the small of only bolt together Part, improve the positioning precision of this smallclothes.

Brief description of the drawings

Fig. 1 is the utility model schematic appearance；

Fig. 2 is positioning unit and work pieces mate schematic diagram；With

Fig. 3 is positioning unit schematic diagram.

Reference：Base 1, template 2, positioning unit 3, edge 4, base 5, workpiece 6, positioning hole 7, bolt 8, boss 9, Magnet 10.

Embodiment

As shown in Figures 1 to 3, the utility model provides a kind of bolt positioning fixture structure, and it includes base 1, template 2 and calmly Bit location 3, wherein：The positioning unit 3 is U-shaped and has both sides edge 4 and base 5, the edge of the edge 4 and workpiece 6 Be in contact positioning, has positioning hole 7, the phase location fit of bolt 8 of the positioning hole 7 and the workpiece 6 on the base 5.

As a further improvement, the edge 4 has lead angle.

As a further improvement, the base 5 also has boss 9, and the boss 9 is disposed with magnet 10, the magnet 10 with the attracted connection in bottom surface of the workpiece 6.Forming face face positions and fixed.

In a preferred embodiment, the positioning hole 7 of bolt limits the shifting of the both direction of workpiece 6 in the utility model Dynamic (such as X Y-direction), edge 4 limits the rotation (as about the z axis) in a direction of workpiece 6, in addition the edge 4 in positioning unit 3 It is general nearby that magnet 10 is set, the movement (such as Z-direction) in 6 one directions of limitation workpiece and with other location elements, edge 4, positioning Hole 7 coordinates the rotation (such as around X Y-axis) in limit feature another two direction, finally plays and smallclothes are accurately positioned.

As a further improvement, the boss 9 has two and positioned at the both sides of the positioning hole 7.

As a further improvement, the positioning unit 3 is fixedly connected through the template 2 with the base 1, and the bottom Seat 1 is fixedly connected with bottom plate through bolt.

As a further improvement, the hole wall of the positioning hole 7 has hardened layer.The inside in the hole typically requires to black Processing, hardness is identical with locating surface, HRC38~45.

Plate positioning method described in preferred embodiment of the present utility model is applied to small sheet metal component, and the part does not have Hole only has a projection welding bolt, and positioning thinking is exactly to control the six-freedom degree of plate (positioning method of all parts is all control Its six-freedom degree is made, but smallclothes are sometimes limited and its shape, can not be entirely limited six-freedom degree).

It should be appreciated that the utility model scope of the claimed is not limited to non-limiting embodiments, it should be understood that non-limiting reality Scheme is applied to illustrate as just example.The desired substantive protection domain of the application is more embodied in independent claims The scope of offer, and its dependent claims.

Claims

1. a kind of bolt positioning fixture structure, it includes base, template and positioning unit, it is characterised in that：The positioning unit U-shaped and have both sides edge and base, the side edge of the edge and workpiece touches positioning, has positioning on the base Hole, the bolt phase location fit of the positioning hole and the workpiece.

A kind of 2. bolt positioning fixture structure as claimed in claim 1, it is characterised in that：The edge has lead angle.

A kind of 3. bolt positioning fixture structure as claimed in claim 2, it is characterised in that：The base also has boss, institute State boss and be disposed with magnet, the attracted connection in bottom surface of the magnet and the workpiece.

A kind of 4. bolt positioning fixture structure as claimed in claim 3, it is characterised in that：The boss has two and is located at The both sides of the positioning hole.

A kind of 5. bolt positioning fixture structure as claimed in claim 4, it is characterised in that：The positioning unit is through the template It is fixedly connected with the base, and the base is fixedly connected with bottom plate through bolt.

A kind of 6. bolt positioning fixture structure as claimed in claim 5, it is characterised in that：The hole wall of the positioning hole has hard Change top layer.