CN209175304U - A kind of fixture pin assembly - Google Patents

A kind of fixture pin assembly Download PDF

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Publication number
CN209175304U
CN209175304U CN201821855807.3U CN201821855807U CN209175304U CN 209175304 U CN209175304 U CN 209175304U CN 201821855807 U CN201821855807 U CN 201821855807U CN 209175304 U CN209175304 U CN 209175304U
Authority
CN
China
Prior art keywords
pin
positioning
hole
cone
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201821855807.3U
Other languages
Chinese (zh)
Inventor
路明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongyuan University of Technology
Original Assignee
Zhongyuan University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongyuan University of Technology filed Critical Zhongyuan University of Technology
Priority to CN201821855807.3U priority Critical patent/CN209175304U/en
Application granted granted Critical
Publication of CN209175304U publication Critical patent/CN209175304U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model proposes a kind of fixture pin assemblies, it include: screw, supporting pin, positioning pin, supporting pin is installed on clamp body with being interference fitted connecting mode, positioning pin is inserted in supporting pin, it is in close contact the male cone (strobilus masculinus) on the taper hole and supporting pin on positioning pin, the threaded hole in supporting pin is screwed in after screw is passed through the unthreaded hole on positioning pin, and is fastened.The beneficial effect is that: the positioning function of the utility model by the external cylindrical surface and taper hole, supporting pin on positioning pin male cone (strobilus masculinus) and small external cylindrical surface complete jointly;It realizes and conveniently replaces worn-out positioning working face while guaranteeing positioning accuracy.The utility model has the advantages of simple structure, manufacture easy to produce.

Description

A kind of fixture pin assembly
Technical field
The utility model relates to field of mechanical technique, particularly relate to a kind of fixture pin assembly.
Background technique
Fixture is an important technological equipment in machine-building, special fixture be a certain procedure for some part and The fixture of design and manufacture.When the product of production is relatively stable, the batch of production is bigger, when in order to be effectively reduced work The labor intensity of worker raises labour productivity, obtains higher machining accuracy, usually using special fixture.Positioning pin be with A kind of setting element that the inner hole of workpiece to be machined is commonly used when being positioning datum.When large quantities of mass productions, due to frequent Workpiece to be machined is loaded and unloaded, the abrasion of positioning pin is will cause, influences machining accuracy, so positioning pin must be replaced in time, and due to In order to obtain higher positioning accuracy, positioning pin is usually mounted on clamp body with interference fit, in this case, replacement The positioning pin of abrasion is unusual inconvenience.
Utility model content
The utility model be solves the problems, such as it is existing in the prior art structure is complicated, replacement difficulty, propose a kind of fixture Worn-out positioning working face is conveniently replaced in realization under conditions of guaranteeing positioning accuracy with pin assembly.
The technical solution of the utility model is achieved in that
A kind of fixture pin assembly, composition includes: screw, positioning pin, supporting pin, and the supporting pin is by upper end Cone, the second cylinder and the first cylinder of lower end composition, the positioning pin are cylindrical structure, are opened at the center of the positioning pin Equipped with unthreaded hole and taper hole, threaded hole is offered at the center of the cone upper half, the cone of the supporting pin upper end is installed to In taper hole in the positioning pin, the screw is inserted into from the unthreaded hole and screws with threaded hole cooperation, the supporting pin First cylinder of lower end is inserted into clamp body.
The external cylindrical surface and the clamp body of first cylinder are interference fitted.
Externally threaded specification is identical as the specification of the threaded hole in the supporting pin on the screw, the cone lower half Second cylinder in portion and the first cylindrical-concentric below.
The taper hole is located at the lower section of the unthreaded hole and is connected with the unthreaded hole.
The cone is identical with the taper of the taper hole.
The beneficial effects of the utility model are:
1. the present invention is realized conveniently replaces worn-out positioning working face while guaranteeing positioning accuracy;
2. the utility model has the advantages of simple structure, manufacture easy to produce;
3. the installation and removal of the utility model are convenient and efficient, the operating efficiency of installation and removal is improved.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the structural schematic diagram of positioning pin;
Fig. 3 is the structural schematic diagram of supporting pin;
Fig. 4 is the structural schematic diagram of screw.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of fixture pin assembly as shown in Fig. 1 ~ Fig. 4, composition include: screw 1, positioning pin 2, supporting pin 3, branch Support pin 3 is made of the cone 5 of upper end, the second cylinder 7 and the first cylinder 6 of lower end, the circle of cone 5, first in entire supporting pin 3 Column 6, the second cylinder 7 be all it is concentric, offer threaded hole 8 at the center of cone 5.
Positioning pin 2 is cylindrical structure, offers unthreaded hole 9 and taper hole 10 at the center of positioning pin 2, taper hole 10 is located at unthreaded hole 9 lower section is simultaneously connected with unthreaded hole 9, and the cone 5 of 3 upper end of supporting pin is installed in the taper hole 10 in positioning pin 2, cone 5 and cone The taper in hole 10 is identical, and screw 1 is inserted into from the unthreaded hole 9 of positioning pin 2 and screws with the cooperation of the threaded hole of supporting pin 38, supporting pin 3 First cylinder 6 of lower end is inserted into clamp body 4.
The external cylindrical surface and clamp body 4 of first cylinder 6 are interference fitted.
Since the external cylindrical surface and taper hole 10 of positioning pin 2 have sufficiently high concentricity, the male cone (strobilus masculinus) of cone 5 and the first cylinder 6 external cylindrical surface has sufficiently high concentricity, and the external cylindrical surface due to the first cylinder 6 in supporting pin 3 and 4 mistake of clamp body It is full of cooperation, therefore can guarantees positioning accuracy;Due to the positioning working face for being positioned to workpiece to be machined and it is used for and fixture 6 external cylindrical surface of the first cylinder of 4 interference fit joint of body is belonging respectively to different parts, therefore can be convenient efficiently replacement abrasion Position working face.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (5)

1. a kind of fixture pin assembly, composition includes: screw, positioning pin, supporting pin, it is characterised in that: the support Pin is made of the cone of upper end, the second cylinder and the first cylinder of lower end, and the positioning pin is cylindrical structure, in the positioning The center of pin offers unthreaded hole and taper hole, offers threaded hole, the cone peace of the supporting pin upper end at the center of the cone It is attached in the taper hole in the positioning pin, the screw is inserted into from the unthreaded hole and screws with threaded hole cooperation, the branch First cylinder of support pin lower end is inserted into clamp body.
2. fixture pin assembly according to claim 1, it is characterised in that: the external cylindrical surface of first cylinder with The clamp body interference fit.
3. fixture pin assembly according to claim 1, it is characterised in that: on the screw externally threaded specification with The specification of the threaded hole is identical in the supporting pin, the second cylinder of the cone lower half and first circle below Column is concentric.
4. fixture pin assembly according to claim 1, it is characterised in that: the taper hole is located under the unthreaded hole Unthreaded hole described in Fang Bingyu is connected.
5. fixture pin assembly according to claim 1, it is characterised in that: the taper of the cone and the taper hole It is identical.
CN201821855807.3U 2018-11-12 2018-11-12 A kind of fixture pin assembly Expired - Fee Related CN209175304U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821855807.3U CN209175304U (en) 2018-11-12 2018-11-12 A kind of fixture pin assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821855807.3U CN209175304U (en) 2018-11-12 2018-11-12 A kind of fixture pin assembly

Publications (1)

Publication Number Publication Date
CN209175304U true CN209175304U (en) 2019-07-30

Family

ID=67363997

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821855807.3U Expired - Fee Related CN209175304U (en) 2018-11-12 2018-11-12 A kind of fixture pin assembly

Country Status (1)

Country Link
CN (1) CN209175304U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190730

Termination date: 20201112

CF01 Termination of patent right due to non-payment of annual fee