CN203508805U

CN203508805U - Cross-shaped positioning pin

Info

Publication number: CN203508805U
Application number: CN201320537858.2U
Authority: CN
Inventors: 吴怀青
Original assignee: TIANJIN YIQING HAOYU PRECISION MOULD Co Ltd
Current assignee: TIANJIN YIQING HAOYU PRECISION MOULD Co Ltd
Priority date: 2013-08-29
Filing date: 2013-08-29
Publication date: 2014-04-02
Anticipated expiration: 2023-08-29

Abstract

The utility model provides a cross-shaped positioning pin which is composed of a body part and inserting parts. The body part is of a regular octagon columnar structure, the inserting parts are symmetrically fixed in the middle of the upper surface and the middle of the lower surface on the body part, the inserting parts are of a cross-shaped structure, and the two sides of each edge of the cross-shaped structure are vertically provided with tooth-shaped protrusions. The cross-shaped positioning pin is simple in structure and ingenious in design, the body part and the inserting parts are in special structure design, the fixing effect of male dies and female dies is obvious, gaps formed in the machining process of the male dies and the female dies are effectively reduced, the risk that the cross-shaped positioning pin is broken in the using process is prevented, and the cross-shaped positioning pin is particularly suitable for applications on the connecting aspect of shaft universal couplings, and meets the demand for large-scale industrial production.

Description

A kind of cross alignment pin

Technical field

The utility model relates to mould manufacturing field, especially a kind of cross alignment pin.

Background technology

Alignment pin is in the mould consisting of two parts or more parts, the adjacent two parts of mould are accurately located and the pin of design, visible, alignment pin plays the role of positioning, mould must just can be made perfect product by accurate synchronization when closure, and alignment pin can allow upper and lower two molds play the effect of accurate location.

In Design of Dies and manufacture, alignment pin is one of modal part, and because it is only for the location between part, therefore, few people can give it and too much pay close attention to.

In Cold Press Working, the dimensional accuracy of blanking part depends on the size of punch-die working portion, and the dimension difference between them forms blanking die gap.Gap is the important technical parameter of Stamping Die Design, and its size has a great impact tools such as blanking part cross section quality, blanking pressure, die lifes.Excessive gap, stamping-out there will be punching burr; Gap is too small, and section can produce secondary slight crack, occurs extruding burr, all make the cross section quality after stamping-out undesirable, and reasonable clearance not only contributes to the raising of stamping-out cross section quality, also contributes to the raising of die life.

In manufacturing process, according to the different gap assured plan adopting in Design of Dies, correspondingly take different gap equipment adjustment methods, at present, normal use have equipment adjustment methods such as pad method, light transmission method, mensuration, copper facing (zinc) method, coating, technique allowance, locator location.

In general, the working part that punch, die are processed respectively, because the reasonable clearance of mould in theory forms, therefore, its assembling principle is to fix the working part of be difficult for adjusting, and guarantees that by adjusting the position that the position of another working part changes between punch-die gap is even, now, only pull tight in advance screw, not fixed locating stud.

Yet practical experience is for many years noticed those skilled in the art, if can pay close attention to targetedly alignment pin, use alignment pin, often can produce the special effect of getting twice the result with half the effort in Design of Dies or manufacture process.Therefore, for particular mold, design targetedly alignment pin, there is very important production practices meaning.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of cross alignment pin.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of cross alignment pin, by main element and insertion parts, formed, described main element is octagon column structure, described insertion parts is symmetrically fixed on described main element upper surface middle part and lower surface middle part, this insertion parts is decussate texture, in the both sides on every limit of decussate texture, is vertically installed with detent projection.

Preferably, above-mentioned cross alignment pin, described detent projection is arranged in the leading portion on every limit of decussate texture, place.

Preferably, above-mentioned cross alignment pin, the material of described main element and insertion parts is 9CrSi cutting tool steel material.

The utility model structure has following beneficial effect:

Above-mentioned cross alignment pin, simple in structure, design ingenious, the special construction design of main element and insertion parts, outstanding to the fixed effect between punch, die, effectively reduce the gap forming in process between punch, die and prevented the risk of cross alignment pin use procedure Fracture, be especially applicable to the application of Hooks coupling universal coupling connection aspect for axle, be applicable to the needs of large-scale industrial production.

Accompanying drawing explanation

Fig. 1 is the structural representation (insertion parts of opposite side is hidden) of cross alignment pin described in the utility model.

In figure: 1-main element 2-insertion parts 3-detent projection

The specific embodiment

For further illustrating the utility model, now coordinate accompanying drawing to be described in detail:

As shown in Figure 1, described cross alignment pin, by the main element 1 of 9CrSi cutting tool steel material and the insertion parts 2 of 9CrSi cutting tool steel material, formed, described main element 1 is octagon column structure, described insertion parts 2 is symmetrically fixed on described main element 1 upper surface middle part and lower surface middle part, this insertion parts 2 is decussate texture, in the both sides on every limit of decussate texture, is vertically installed with detent projection 3, and this detent projection 3 is arranged in the leading portion on every limit of decussate texture, place.

The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a cross alignment pin, by main element and insertion parts, formed, it is characterized in that: described main element is octagon column structure, described insertion parts is symmetrically fixed on described main element upper surface middle part and lower surface middle part, this insertion parts is decussate texture, in the both sides on every limit of decussate texture, is vertically installed with detent projection.

2. cross alignment pin according to claim 1, is characterized in that: described detent projection is arranged in the leading portion on every limit of decussate texture, place.

3. cross alignment pin according to claim 1, is characterized in that: the material of described main element and insertion parts is 9CrSi cutting tool steel material.