CN219403284U

CN219403284U - Self-centering clamp for exhaust pipe blank

Info

Publication number: CN219403284U
Application number: CN202320772304.4U
Authority: CN
Inventors: 黄旭宸; 高成伟; 谈振宜; 张跃跃; 施尧云
Original assignee: YINGPU MACHINERY (YIXING) CO Ltd
Current assignee: YINGPU MACHINERY (YIXING) CO Ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-07-25
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses a self-centering fixture for an exhaust pipe blank, which comprises a bottom plate, wherein two positioning holes are vertically formed in the bottom plate, positioning sleeves are respectively arranged in the two positioning holes, sliding grooves are formed in the centers of the two positioning sleeves, a conical pin is vertically connected in one sliding groove in a sliding manner, and a diamond pin is vertically connected in the other sliding groove in a sliding manner; limiting components for limiting the conical pin or the diamond pin to slide up and down are respectively arranged on the two positioning sleeves. According to the utility model, the conical pin and the diamond pin are adopted, 6 degrees of freedom of the part blank can be limited, the conical pin and the diamond pin can be quickly popped up by the limiting assembly, and the part blank is quickly self-centered, so that the positions of the part blank hole and the unthreaded hole are ensured, and the processing quality of the part is improved.

Description

Self-centering clamp for exhaust pipe blank

Technical Field

The utility model relates to the field of clamps, in particular to a self-centering clamp for an exhaust pipe blank.

Background

When the exhaust pipe blank is processed, the six-point positioning mode is required to be used for clamping, the positioning mode is required to constantly check whether the positions of the part blank and the unthreaded hole reach phi 0.5 position degree in the process of correcting materials, longer time is required, and the risk of deviation can be caused in the process of correcting, so that the processing quality of the part is affected.

Disclosure of Invention

The utility model aims to provide a self-centering clamp for an exhaust pipe blank.

The utility model has the innovation points that the conical pin and the diamond pin are adopted, 6 degrees of freedom of the part blank can be limited, the conical pin and the diamond pin can be quickly popped out by the limiting component, and the part blank can be quickly self-centered, so that the positions of the part blank hole and the unthreaded hole are ensured, and the processing quality of the part is improved.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the self-centering clamp for the exhaust pipe blank comprises a bottom plate, wherein two positioning holes are vertically formed in the bottom plate, positioning sleeves are respectively arranged in the two positioning holes, sliding grooves are formed in the centers of the two positioning sleeves, a conical pin is vertically connected in one sliding groove in a sliding manner, and a diamond pin is vertically connected in the other sliding groove in a sliding manner; limiting components for limiting the conical pin or the diamond pin to slide up and down are respectively arranged on the two positioning sleeves. The conical pin and the diamond pin are adopted, 6 degrees of freedom of the part blank can be limited, the conical pin and the diamond pin can be quickly popped out by the limiting assembly, and self-centering of the part blank is quickly realized, so that the positions of the part blank hole and the unthreaded hole are ensured, and the processing quality of the part is improved.

Preferably, the centers of the upper end and the lower end of the taper pin and the diamond pin are respectively provided with an upper groove and a lower convex groove with outward openings, the bottom of the upper groove is provided with a through hole communicated with the lower convex groove, and the through hole and the upper groove are positioned on the same central line; the limiting assembly comprises a bolt and a spring, the head of the bolt is located in the upper groove, the screw rod of the bolt penetrates out of the upper groove, the through hole and the lower convex groove in sequence and then is in threaded connection with the locating sleeve, the spring is sleeved on the screw rod of the bolt, the upper end of the spring is in butt joint with the bottom of the lower convex groove, and the lower end of the spring is in butt joint with the bottom of the sliding groove. The bolts are adopted, so that the limiting effect on the movement of the taper pins and the diamond pins can be achieved; the conical pin and the diamond pin can be quickly ejected out by the spring, the part blank is positioned, the phi 0.5 position degree between the part blank hole and the unthreaded hole is ensured, and the process of calibrating materials in a six-point positioning mode is greatly saved.

Preferably, the two positioning sleeves are horizontally connected with limit screws in a threaded manner, limit grooves are vertically formed in the outer side walls of the taper pins and the diamond pins, and the end parts of the limit screws are abutted to the bottoms of the limit grooves. The limiting screw not only can further limit the vertical movement distance of the taper pin and the diamond pin, but also can prevent the taper pin or the diamond pin from shaking in the movement process because the end part of the limiting screw is propped against the taper pin or the diamond pin.

Preferably, the positioning hole is in interference fit with the positioning sleeve. When the locating sleeve is damaged, the locating sleeve can be directly taken out from the locating hole to be replaced, the replaced locating sleeve is not required to be centered again, the locating sleeve mounting precision is high, and the phi 0.5 position degree between the blank hole and the unthreaded hole of the part is ensured.

Preferably, the spring is a cylindrical helical compression spring.

The beneficial effects of the utility model are as follows:

1. the conical pin and the diamond pin are adopted, so that 6 degrees of freedom of the part blank can be limited; the bolt is adopted, the movement of the taper pin and the diamond pin can be limited, the spring can enable the taper pin and the diamond pin to pop up rapidly, the part blank is positioned, phi 0.5 position degree between the part blank hole and the unthreaded hole is ensured, and the process of calibrating materials in a six-point positioning mode is greatly saved.

2. The limiting screw and the limiting component act together, so that the vertical movement distance of the taper pin and the diamond pin can be further limited, and the end part of the limiting screw is tightly propped against the taper pin or the diamond pin, so that the taper pin or the diamond pin is prevented from shaking in the movement process, and the positioning precision is further improved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the taper pin and the positioning sleeve.

Fig. 3 is a schematic view of the structure of the diamond pin and the positioning sleeve.

In the figure:

1. a bottom plate; 11. positioning holes; 2. a positioning sleeve; 21. a chute; 3. a taper pin; 31. an upper groove; 32. a lower convex groove; 33. a through hole; 4. diamond pins; 5. a limit component; 51. a bolt; 52. a spring; 6. a limit screw; 7. a limit groove; 8. and (5) an exhaust pipe blank.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, an exhaust pipe blank self-centering fixture comprises a bottom plate 1, two positioning holes 11 are vertically formed in the bottom plate 1, positioning sleeves 2 are respectively in interference fit with the two positioning holes 11, sliding grooves 21 are formed in the centers of the two positioning sleeves 2, a taper pin 3 is vertically connected in one sliding groove 21 in a sliding manner, a diamond pin 4 is vertically connected in the other sliding groove 21 in a sliding manner, an upper groove 31 and a lower groove 32 with outward openings are respectively formed in the upper end and the lower end of the taper pin 3 and the lower end of the diamond pin 4, the centers of the upper groove 31 and the lower groove 32 are positioned on the same straight line with the center line of the taper pin 3, and a through hole 33 which is communicated with the lower groove 32 and is positioned on the same straight line with the lower groove 32 is formed in the bottom of the upper groove 31. The two positioning sleeves 2 are respectively provided with a limiting assembly 5, the limiting assemblies 5 comprise bolts 51 and springs 52, the heads of the bolts 51 are positioned in the upper grooves 31, and the screws of the bolts 51 sequentially penetrate through the upper grooves 31, the through holes 33 and the lower convex grooves 32 and are in threaded connection with the positioning sleeves 2; the spring 52 is a cylindrical helical compression spring 52, the spring 52 is sleeved on the screw rod of the bolt 51 and is positioned in the lower convex groove 32, the upper end of the spring 52 is abutted with the bottom of the lower convex groove 32, and the lower end of the spring 52 is abutted with the bottom of the chute 21.

As shown in fig. 2 and 3, two positioning sleeves 2 are horizontally and in threaded connection with a limit screw 6, the outer side walls of a taper pin 3 and a diamond pin 4 are vertically provided with a limit groove 7, and the end part of the limit screw 6 is abutted with the bottom of the limit groove 7 after penetrating into the limit groove 7.

In view of the above-mentioned, it is desirable,

when the self-centering clamp is used, the exhaust pipe blank 8 is pressed onto the bottom plate 1, the taper pin 3 and the diamond pin 4 respectively penetrate into corresponding holes of the exhaust pipe blank 8 under the action of the spring 52, the holes of the exhaust pipe blank 8 are self-centered, 6 degrees of freedom of the exhaust pipe blank 8 are limited, and the positions of the holes of the exhaust pipe blank 8 and the unthreaded holes are ensured.

Claims

1. A self-centering clamp for an exhaust pipe blank comprises a bottom plate, and is characterized in that,

two positioning holes are vertically formed in the bottom plate, positioning sleeves are respectively arranged in the two positioning holes, sliding grooves are formed in the centers of the two positioning sleeves, a taper pin is vertically connected in one sliding groove in a sliding manner, and a diamond pin is vertically connected in the other sliding groove in a sliding manner;

limiting components for limiting the conical pin or the diamond pin to slide up and down are respectively arranged on the two positioning sleeves.

2. The exhaust pipe blank self-centering fixture of claim 1, wherein,

the centers of the upper end and the lower end of the taper pin and the diamond pin are respectively provided with an upper groove and a lower convex groove with outward openings, the bottom of the upper groove is provided with a through hole communicated with the lower convex groove, and the through hole and the upper groove are positioned on the same central line;

the limiting assembly comprises a bolt and a spring, the head of the bolt is located in the upper groove, the screw rod of the bolt penetrates out of the upper groove, the through hole and the lower convex groove in sequence and then is in threaded connection with the locating sleeve, the spring is sleeved on the screw rod of the bolt, the upper end of the spring is in butt joint with the bottom of the lower convex groove, and the lower end of the spring is in butt joint with the bottom of the sliding groove.

3. The exhaust pipe blank self-centering fixture of claim 2,

and the two positioning sleeves are horizontally and threadedly connected with limit screws, limit grooves are vertically formed in the outer side walls of the taper pins and the diamond pins, and the end parts of the limit screws are abutted to the bottoms of the limit grooves.

4. The exhaust pipe blank self-centering fixture of claim 1, wherein,

the positioning hole is in interference fit with the positioning sleeve.

5. The exhaust pipe blank self-centering fixture of claim 2,

the spring is a cylindrical helical compression spring.