Auxiliary positioning tool for mounting auxiliary frame

Abstract

The utility model relates to an auxiliary positioning tool for auxiliary frame installation, and belongs to the technical field of auxiliary frame installation, the auxiliary positioning tool comprises a support, the four corners of the top end of the support are each provided with a positioning piece, one positioning piece has a point fixing function, and each positioning piece comprises a positioning rod, a spring and a supporting ring block; the positioning rod is detachably fixed to the support, the positioning rod is sleeved with the spring and the supporting ring block, and the supporting ring block is fixed to the top of the spring. According to the positioning tool, targeted design is conducted according to the shaft holes in the two sides of the main frame and the auxiliary frame, one positioning rod in the positioning tool is machined to be approximately rhombic, two points on the auxiliary frame are determined through two points on the main frame in the precision direction not affecting the customer requirement, the positioning precision in the other directions is reduced, and therefore rapid assembly can be achieved, and the production efficiency is improved. The processing cost and the manufacturing difficulty are reduced.

Description

Technical Field

[0001] This application relates to the technical field of subframe installation, and particularly to an auxiliary positioning tool for subframe installation. Background Art

[0002] Figure 1 As shown in the schematic connection diagram of the subframe 4 and the main frame 5, the positional accuracy requirements between the two are relatively high. During the existing assembly, manual debugging and measurement of the positional tolerance are required multiple times. The entire assembly process is rather cumbersome, with high manufacturing difficulty and low production efficiency.

[0003] Therefore, in order to improve production efficiency, our company has developed an auxiliary positioning tool that can improve the positioning accuracy and reduce the positional tolerance deviation. Utility Model Content

[0004] The purpose of this application is to provide an auxiliary positioning tool for subframe installation to solve the problems raised in the above background art.

[0005] To achieve the above purpose, this application provides an auxiliary positioning tool for subframe installation, adopting the following technical solution:

[0006] An auxiliary positioning tool for subframe installation includes a bracket. At the four corners of the top of the bracket, a positioning member is installed respectively. One of the positioning members has a fixed-point function. The positioning member includes a positioning rod, a spring, and a supporting ring block. The positioning rod is detachably fixed on the bracket. The spring and the supporting ring block are both sleeved on the positioning rod. The supporting ring block is fixed at the top of the spring, and the bottom of the spring abuts against the bracket. Vertically arranged guiding grooves are symmetrically formed on the surface of the positioning rod. Screws are threadedly connected to both sides of the supporting ring block, and the end surfaces of the screws abut against the guiding grooves.

[0007] On both sides of the positioning rod in the positioning member with the fixed-point function, there are relief portions, and the cross-section of this positioning rod is rhombic. The length of the minor axis of the rhombus is less than the length of the major axis, and the length of the major axis of the rhombus is the same as the diameter of the positioning rod. The major axis of the rhombus faces the subframe.

[0008] Preferably, to ensure the stable structure of the bracket, the bracket includes two square steels, which are cross-fixed, and the intersection point is the symmetry point.

[0009] The positioning rod is fixed at the end of the square steel through a stud.

[0010] Preferably, to facilitate the placement of the main frame and the subframe onto the positioning tool, the top end of the positioning rod is bullet-round head-shaped.

[0011] In summary, the present application includes at least one of the following beneficial technical effects: The auxiliary positioning tool for subframe installation has a simple structure and is specifically designed according to the shaft holes on both sides of the main frame and the subframe. One of the positioning rods in the positioning tool is processed into a shape close to a rhombus. Without affecting the accuracy in the direction required by the customer, two points on the subframe are determined by using two points on the main frame, reducing the positioning accuracy in other directions, so that rapid assembly can be achieved, and the processing cost and manufacturing difficulty can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the connection relationship between the subframe and the main frame.

[0013] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present application.

[0014] Figure 3 is Figure 2 an enlarged view of part A in

[0015] Figure 4 is a schematic diagram of the usage state of an embodiment of the present application.

[0016] Description of the reference numerals: 1, bracket; 2, positioning member; 21, positioning rod; 211, guiding groove; 22, spring; 23, supporting ring block; 231, screw rod; 3, relief portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the present application in detail Figures 2 - 4 with reference to the accompanying drawings.

[0018] An embodiment of the present application discloses an auxiliary positioning tool for subframe installation. Referring to Figures 2 - 3 , it includes a bracket 1. The bracket 1 includes two square steels which are cross-fixed, and the intersection point is the symmetry point. Four corners at the top of the bracket 1 are respectively provided with a positioning member 2. One of the positioning members 2 has a fixed-point function. The positioning member 2 includes a positioning rod 21, a spring 22 and a supporting ring block 23. The positioning rod 21 is detachably fixed on the bracket 1. Specifically, the positioning rod 21 is fixed at the end of the square steel through a stud. The spring 22 and the supporting ring block 23 are both sleeved on the positioning rod 21. The supporting ring block 23 is fixed at the top of the spring 22. The bottom of the spring 22 abuts against the bracket 1. Vertically arranged guiding grooves 211 are symmetrically formed on the surface of the positioning rod 21. Screw rods 231 are threadedly connected to both sides of the supporting ring block 23, and the end faces of the screw rods 231 abut against the guiding grooves 211;

[0019] The positioning rod 21 on both sides of the positioning member 2 with a fixed-point function has a relief portion 3, and the cross-section of the positioning rod 21 is rhombic. The length of the minor axis of the rhombus is less than the length of the major axis, and the length of the major axis of the rhombus is the same as the diameter of the positioning rod 21. The major axis of the rhombus is arranged towards the subframe (in actual production requirements, the positioning accuracy requirement in the minor axis direction is not very high, but the positioning accuracy requirement in the major axis direction is relatively high).

[0020] Referring to Figure 3 , in order to facilitate the placement of the main frame and the subframe onto the positioning tool, the top end of the positioning rod 21 is bullet-round head shaped.

[0021] The implementation principle of an auxiliary positioning tool for subframe installation in an embodiment of the present application is as follows:

[0022] Referring to Figure 4 , according to the shaft holes on both sides of the main frame and the subframe, a targeted design is carried out. The positioning members 2 at the four corners of the top of the bracket 1 respectively correspond to the four shaft holes. The positioning rod 21 is in clearance fit in the shaft hole, and the unilateral clearance distance between the positioning rod 21 and the shaft hole is not greater than 0.1 mm. The positioning rod 21 with a fixed-point function is correspondingly arranged on one side of the main frame;

[0023] During assembly, the subframe is installed on the main frame, and then the four positioning rods 21 in the positioning tool are respectively inserted into the four shaft holes. The positioning rod 21 with a fixed-point function is inserted into the main frame. After that, the staff pushes the subframe away from the main frame as a whole. At this time, the long axis edge of the positioning rod 21 with a fixed-point function abuts against the inner wall of the shaft hole of the main frame, and the other three positioning rods 21 can also respectively abut against the inner walls of the corresponding shaft holes. Two points on the subframe are determined according to two points on the main frame. During this process, the subframe can float its position according to the positioning tool. After the point positioning is completed, the subframe can be directly fixed to the main frame. The overall position accuracy is relatively accurate, reducing the processing cost and manufacturing difficulty, and greatly improving the production efficiency.

[0024] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An auxiliary positioning tool for sub-frame installation, characterized in that: The invention comprises a bracket (1), wherein a positioning member (2) is respectively installed at the four corners of the top end of the bracket (1), wherein one of the positioning members (2) has a fixed point function, and the positioning member (2) comprises a positioning rod (21), a spring (22) and a support ring block (23); the positioning rod (21) is detachably fixed on the bracket (1); the spring (22) and the support ring block (23) are both sleeved on the positioning rod (21); the support ring block (23) is fixed on the top of the spring (22); the bottom of the spring (22) abuts against the bracket (1); the surface of the positioning rod (21) is also symmetrically provided with vertically arranged guide grooves (211); screw rods (231) are threadedly connected on both sides of the support ring block (23); the end surface of the screw rod (231) abuts against the guide groove (211); The positioning rod (21) in the positioning member (2) having a fixed point function has a clearance portion (3) on both sides, and the cross section of the positioning rod (21) is in a rhombus shape, the short axis length of the rhombus is shorter than the long axis length, and the long axis length of the rhombus is the same as the diameter of the positioning rod (21), and the long axis of the rhombus is arranged toward the auxiliary frame.

2. The auxiliary positioning tool for sub-frame installation according to claim 1, characterized in that: The bracket (1) comprises two square steels, which are cross-fixed and the intersection point is a symmetrical point.

3. The auxiliary positioning tool for sub-frame installation according to claim 2, characterized in that: The positioning rod (21) is fixed to the end of the square steel by means of a stud.

4. The auxiliary positioning tool for sub-frame installation according to claim 1, characterized in that: The top end of the positioning rod (21) is in the shape of a bullet head.

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