CN114888735A - Positioning device and using method thereof - Google Patents

Abstract

The invention relates to a positioning device, in particular to a device for cylinder combination positioning of half-class parts. The method comprises the following steps: the double-end stud is in clearance fit with the cylinder closing positioning hole, the customized nut is connected with the double-end stud through threads, and the positioning pin is in clearance fit with the pin hole; the invention provides a positioning device for semi-classified workpieces, and aims to design the positioning device, which can solve the problems that a positioning pin cannot be accurately inserted into a pin hole and a cylinder closing bolt is difficult to fix when semi-classified parts are closed in the prior art.

Description

Positioning device and using method thereof

Technical Field

The invention relates to a positioning device, in particular to a device for cylinder combination positioning of half-class parts.

Background

When the existing cylinder of the semi-classified parts needs to be closed, the upper half part and the lower half part need to be placed on the cylinder closing platform, then the cylinder closing positioning pin is inserted into the pin hole for positioning, and therefore the cylinder closing bolt can be screwed into the cylinder closing bolt hole correctly. However, in the process of machining such half parts, the half parts are often deformed to a certain degree, and in addition, the upper half and the lower half of a workpiece cannot be completely leveled when the cylinder is closed, so that the positioning pin cannot be accurately inserted into the pin holes of the upper half and the lower half, and even the pin holes can be damaged.

Disclosure of Invention

The invention provides a positioning device for semi-classified workpieces, and aims to design the positioning device, which can solve the problem that a positioning pin cannot be accurately inserted into a pin hole when semi-classified parts are combined in a cylinder in the prior art.

The purpose of the invention is realized as follows: the positioning device includes: stud, customization nut, stud sets up on the work piece, customization nut with stud is connected.

The use method of the positioning device comprises the following steps:

s1: the upper workpiece and the lower workpiece are both placed on a cylinder closing platform, the lower end of the stud is screwed into a cylinder closing bolt hole in the middle of the lower workpiece, and the cylinder closing bolt hole of the upper workpiece penetrates through the stud;

s2: connecting a customized nut with the upper end of the stud bolt through threads, and fastening the matching distance between an upper workpiece and a lower workpiece by means of the customized nut until a pin hole on the lower workpiece can be clearly observed through the pin hole of the upper workpiece;

s3: and inserting the positioning pin into the pin hole through the upper workpiece, screwing the cylinder closing bolt into the other vacant cylinder closing bolt hole, fastening until the matching surface gap meets the preset requirement, taking out the stud, replacing the stud with the cylinder closing bolt, and closing the cylinder.

In one embodiment, the workpiece is divided into an upper workpiece and a lower workpiece, the upper workpiece and the lower workpiece are correspondingly provided with a plurality of cylinder closing positioning holes and pin holes which are distributed at intervals, a sinking platform is arranged at an upper section of each cylinder closing positioning hole, and the positioning device includes: stud, customization nut, locating pin, stud with close jar locating hole clearance fit, customization nut with stud passes through threaded connection, the locating pin with pinhole clearance fit.

In one embodiment, the custom nut is divided into an upper portion and a lower portion, the upper portion and the lower portion having the same inner diameter.

In one embodiment, the upper portion is internally threaded and the lower portion has a smooth inner wall.

In one embodiment, the outer diameter of the upper part is larger than the diameter of the cylinder combining bolt hole, the outer diameter of the lower part is smaller than the diameter of the cylinder combining bolt hole, and a boss structure is arranged on the outer edge of the end face, matched with the lower part, of the upper part.

In one embodiment, the boss structure is matched with the counter structure.

In one embodiment, the stud is formed by an upper end and a lower end, the diameter of the upper end is smaller than that of the lower end, and an arc-shaped transition surface is arranged between the upper end and the lower end.

In one embodiment, the upper end and the lower end are externally threaded.

In one embodiment, the threaded engagement of the stud with the custom nut is at least medium grade.

The technical scheme adopted by the invention can achieve the following beneficial effects:

this device simple structure, convenient operation through providing a positioner, has solved when the part of class of minutes closes the jar that the locating pin can't accurately insert the pinhole, close the fixed difficult problem of jar double-screw bolt.

Drawings

FIG. 1 is a schematic view of a positioning apparatus;

FIG. 2 is a schematic view of a custom nut;

FIG. 3 is a schematic view of a stud;

FIG. 4 is a top view of the upper workpiece;

100-custom nut, 101-upper part, 102-lower part, 103-thread, 200-stud, 201-upper end, 202-lower end, 300-upper workpiece, 301-lower workpiece, 302-cylinder closing bolt hole and 303-pin hole.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The workpiece is divided into an upper workpiece 300 and a lower workpiece 301, a plurality of cylinder closing positioning holes 302 and pin holes 303 which are distributed at intervals are correspondingly arranged on the upper workpiece 300 and the lower workpiece 301, a sinking platform is arranged at the upper section of each cylinder closing positioning hole 302, and the positioning device comprises: stud 200, customization nut 100, locating pin, stud 200 with close jar locating hole 302 clearance fit, customization nut 100 with stud 200 passes through threaded connection, the locating pin with pinhole 303 clearance fit.

Referring to fig. 2, the custom nut 100 is composed of an upper portion 101 and a lower portion 102, the upper portion 101 and the lower portion 102 have the same inner diameter, the outer diameter of the upper portion 101 is larger than the diameter of the cylinder combining bolt hole 302, the outer diameter of the lower portion 102 is smaller than the diameter of the cylinder combining bolt hole 302, the stud bolt 200 is conveniently limited in the cylinder combining bolt hole 302 by the customized nut 100, the upper portion 101 is internally provided with threads 103, which mate with threads of the upper end 201 of the stud 200, the inner wall of the lower part 102 is smooth, so that the tightening process of the customized nut 100 and the upper end 201 is smooth, meanwhile, the smooth inner wall of the lower part 102 can ensure that the customized nut 100 can finely adjust the axial deviation angle of the stud 200 when being screwed, so that the alignment of the upper workpiece 300 and the lower workpiece 301 is ensured, and one end of the upper part 101, which is close to the lower part 102, is provided with a boss structure.

Referring to fig. 3, the stud 200 is composed of an upper end 201 and a lower end 202, the diameter of the upper end 201 is smaller than that of the lower end 202, an arc transition surface is arranged between the upper end 201 and the lower end 202, and the thread matching grade of the customized nut 100 and the upper end 201 of the stud 200 is at least medium.

Referring to fig. 1, an upper workpiece 300 and a lower workpiece 301 are both placed on a cylinder closing platform, a plurality of corresponding pin holes 303 and cylinder closing bolt holes 302 are arranged on the upper workpiece 300 and the lower workpiece 301 at intervals, the cylinder closing bolt holes of the upper workpiece 300 are through holes, the inner walls of the through holes are smooth, the cylinder closing bolt holes 302 of the lower workpiece 301 are blind holes, the blind holes are provided with threads, one end of a stud 200 is screwed into the cylinder closing bolt holes 302 arranged on the lower workpiece 301, the upper workpiece 300 is screwed into the corresponding cylinder closing bolt holes 302 of the upper workpiece 300 along with the stud 200, a custom nut 100 plays a role in connecting the stud 200 and the upper workpiece 300, a boss structure of the custom nut 100 is matched with a counter sink on the cylinder closing bolt holes of the upper workpiece 300 to play a role in coarse cylinder closing positioning, the inner walls of the cylinder closing bolt holes are smooth, and a lower end 202 of the stud 200 is connected with the cylinder closing bolt holes on the lower workpiece 301, the upper end 201 is connected with the customized nut 100, the customized nut 100 is in threaded connection with the stud 200, when the positions of corresponding pin holes 303 on the upper workpiece 300 and the lower workpiece 301 are completely communicated, cylinder closing positioning is completed, positioning pins are inserted into the pin holes 303 from the upper workpiece 300, cylinder closing bolts are screwed into other empty cylinder closing bolt holes 302, the gap between matching surfaces of the upper workpiece and the lower workpiece is fastened to meet the preset requirement of subsequent processing, the stud 200 is taken out and replaced by conventional cylinder closing bolts, and cylinder closing is completed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. The utility model provides a positioner for semi-categorised work piece, the work piece divide into work piece and lower work piece, go up the work piece and correspond on the work piece down and be provided with a plurality of interval distribution close jar locating hole and pinhole, close jar locating hole upper segment and set up heavy platform, its characterized in that, positioner includes: stud, customization nut, locating pin, stud with close jar locating hole clearance fit, customization nut with stud passes through threaded connection, the locating pin with pinhole clearance fit.

2. The positioning device of claim 1, wherein the custom nut is divided into an upper portion and a lower portion, the upper portion having the same inner diameter as the lower portion.

3. The positioning device of claim 2 wherein said upper portion is internally threaded and said lower portion is smooth on its inner wall.

4. The positioning device as set forth in claim 2, wherein the outer diameter of the upper portion is larger than the diameter of the cylinder combining bolt hole, the outer diameter of the lower portion is smaller than the diameter of the cylinder combining bolt hole, and a boss structure is provided on the outer edge of the end surface of the upper portion engaged with the lower portion.

5. The positioning device of claim 4, wherein the boss structure mates with the counter structure.

6. The positioning device as set forth in claim 1 wherein said stud is comprised of an upper end and a lower end, said upper end having a diameter less than a diameter of said lower end, an arcuate transition surface being provided between said upper end and said lower end.

7. The positioning device of claim 1, wherein the upper end and the lower end are externally threaded.

8. The positioning device as set forth in claim 1 wherein said stud has at least a medium level of thread engagement with said custom nut.

9. Use of a positioning device according to any of claims 1 to 8, characterized in that it comprises the following steps:

s1: the upper workpiece and the lower workpiece are both placed on a cylinder closing platform, the lower end of the stud is screwed into a cylinder closing bolt hole in the middle of the lower workpiece, and the cylinder closing bolt hole of the upper workpiece penetrates through the stud;

s2: connecting a customized nut with the upper end of the stud bolt through threads, and fastening the matching distance between an upper workpiece and a lower workpiece by means of the customized nut until a pin hole on the lower workpiece can be clearly observed through the pin hole of the upper workpiece;

s3: and inserting the positioning pin into the pin hole through the upper workpiece, screwing the cylinder closing bolt into the other vacant cylinder closing bolt hole, fastening until the matching surface gap meets the preset requirement, taking out the stud, replacing the stud with the cylinder closing bolt, and closing the cylinder.

Images