Connecting frame boring and milling clamp

Abstract

The utility model discloses a connecting frame boring and milling clamp which comprises a base and a positioning core arranged in the center of the base, the positioning core is connected with a pressing cover plate through a screw rod, directional pressing supports are arranged at the four corners of the base respectively, and hanging rings are arranged on the side edges of the directional pressing supports. The fixture adopts the structural design of central positioning and pressing and multi-point clamping orientation, can be quickly positioned and mounted with processing equipment, ensures reliable clamping and positioning in the processing process of the connecting frame, makes up the processing operation space to the greatest extent, has the characteristics of simple and compact structure, high positioning precision, quick and simple operation and the like, and is suitable for popularization and application. And the processing operation efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a connecting frame boring and milling fixture. Background Art

[0002] Reference Figure 1 , is a connection frame for engineering vehicles, and is an important installation and connection component in engineering vehicles. The center is a circular hole structure with two groups of installation holes around it. It is now necessary to process the installation holes around the connection frame. Since the connection frame blank is a casting, its shape and structure size accuracy is poor. Conventional clamping is not only difficult to operate, but also has low clamping efficiency, which greatly affects the production efficiency of the product. The Chinese invention patent with publication number CN108466083B discloses an auxiliary support fixture and working method for processing the edges and holes of thin-walled parts. The fixture includes a fixture base, and open U-shaped grooves are provided at both ends of the rectangular fixture base. A circular ring chassis is provided on the fixture base, and a concave platform is provided on the inner ring of the circular ring chassis. A positioning ring is provided on the concave platform. The height of the positioning ring is higher than the height of the circular ring chassis. Two symmetrically arranged half rings are also provided on the fixture base, and the half rings are respectively arranged on the outer sides of the circular ring chassis. The fixture is aimed at thin-walled parts and is not applicable to the special structure of the connection frame. Utility Model Content

[0003] In order to solve the above problems, the utility model aims to provide a connecting frame boring and milling fixture.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a connecting frame boring and milling fixture, including a base, a positioning core arranged at the center of the base, the positioning core is connected to the clamping cover plate through a screw, and directional clamping supports are respectively arranged at the four corners of the base, and the sides of the directional clamping supports are arranged with hanging rings.

[0005] Preferably, the base is a rectangular plate with a plurality of open grooves on the side walls of the rectangular plate, a step hole at the center of the base, mounting holes on the circumference of the step hole, and a step surface on the lower bottom surface of the base.

[0006] Preferably, the positioning core is in the shape of a disc, with mounting holes provided at the center of the disc and at the circumference of the center, and a wear-resistant sleeve provided along the outer end of the positioning core.

[0007] Preferably, the step hole of the base and the mounting hole opened at the center of the positioning core are on the same axis. When the base is installed on the boring machine, the step hole cooperates with the central axis of the boring machine, and the center of the positioning core coincides with the rotation center of the boring machine.

[0008] Preferably, the mounting holes opened on the circumference of the step hole of the base coincide with the mounting holes opened on the circumference of the center of the positioning core, and the base and the positioning core are fastened together by bolts.

[0009] Preferably, the directional clamping support includes a bottom plate, a vertical plate vertically arranged on the bottom plate, and a triangular reinforcing plate connecting the bottom plate and the vertical plate, and a clamping adjustment bolt is vertically arranged on the vertical plate, and the bottom plate is connected to the base through bolts.

[0010] Preferably, the clamping adjustment bolts of the four directional clamping supports correspond to each other in pairs to fix the connecting frame.

[0011] Preferably, the clamping cover plate is a disk with a hollow hole and an open groove on its side wall. One end of the screw is installed in the mounting hole at the center of the positioning core, and the other end is connected to the clamping cover plate through a fastening nut.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model proposes a connecting frame boring and milling fixture, which adopts a center positioning and clamping, multi-point clamping and directional structure design, and can be quickly positioned and installed with the processing equipment to ensure reliable clamping and positioning during the processing of the connecting frame, and to maximize the processing operation space. At the same time, the milling fixture has the characteristics of simple and compact structure, high positioning accuracy, fast and easy operation, etc., which greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a three-dimensional schematic diagram of the engineering vehicle connecting frame in the utility model;

[0015] Figure 2 It is a three-dimensional schematic diagram of the connecting frame boring and milling fixture in the utility model;

[0016] Figure 3 for Figure 2 A top view from the bottom;

[0017] Figure 4 It is a schematic diagram of the clamping of the connecting frame in the utility model;

[0018] In the figure, 1-base; 2-positioning core; 3-directional clamping support; 4-screw; 5-clamping cover plate; 6-wear-resistant sleeve; 7-lifting ring; 8-fastening nut. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0020] Reference Figure 2 and Figure 3 A connecting frame boring and milling fixture mainly consists of a base 1, a positioning core 2, a directional clamping support 3, a screw 4, a clamping cover 5, a wear-resistant sleeve 6, a lifting ring 7, and a fastening nut 8;

[0021] The base 1 and the positioning core 2 are fastened together by bolts. The positioning core 2 is disc-shaped, and mounting holes are opened at the center of the disc and the circumference of the center. A wear-resistant sleeve 6 is sleeved along the outer end of the positioning core 2.

[0022] The directional pressing support 3 comprises four parts, which are distributed at the four corners of the base 1 and are installed on the base 1 by bolt connection. The directional pressing support 3 comprises a bottom plate, a vertical plate vertically arranged on the bottom plate, and a triangular reinforcing plate connecting the bottom plate and the vertical plate. A pressing adjusting bolt is vertically arranged on the vertical plate.

[0023] The clamping cover plate 5 is a disk with a hollow hole, and an open groove is provided on its side wall. One end of the screw rod 4 is installed in the installation hole at the center of the positioning core 2, and the other end is connected to the clamping cover plate 5 through a fastening nut 8. The open groove provided on the clamping cover plate 5 is convenient for tightening and unloading during operation;

[0024] A stepped hole is provided under the base 1, and the axis of the stepped hole coincides with the axis of the positioning core 2. When installed with the boring machine, the stepped hole cooperates with the central axis of the boring machine to ensure that the center of the positioning core 2 coincides with the rotation center of the boring machine; an open groove is provided on the base 1 to facilitate tightening and fixing when connected to the boring machine; a stepped surface is provided on the lower bottom surface of the base 1 to reduce the contact area between the boring fixture base and the boring machine worktable surface to ensure that the boring fixture is installed flat.

[0025] Reference Figure 4 Before boring, the center hole and end face of the connecting frame have been processed. The clamping process is as follows: the circular hole in the center of the connecting frame is set on the positioning core 2, and the inner diameter of the circular hole in the center of the connecting frame is slightly larger than the outer diameter of the positioning core 2 plus the thickness of the wear-resistant sleeve. The two groups of mounting holes of the connecting frame are placed between the directional pressing supports 3, and the ear plates with the mounting holes are pressed by the pressing adjustment bolts of the directional pressing supports 3, and finally the top of the connecting frame is pressed by the pressing cover plate 5.

[0026] The fixture adopts a center positioning clamping and multi-point clamping directional structure design, which can be quickly positioned and installed with the processing equipment to ensure reliable clamping and positioning during the processing of the connecting frame, and to maximize the processing operation space. At the same time, the milling fixture has the characteristics of simple and compact structure, high positioning accuracy, fast and easy operation, etc., which greatly improves the processing efficiency.

[0027] The above is a detailed introduction to a connecting frame boring and milling fixture provided by the utility model. This article uses specific examples to illustrate the structure and working principle of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A connecting frame boring and milling fixture, characterized in that: The invention comprises a base (1), a positioning core (2) arranged at the center of the base (1), the positioning core (2) being connected to a pressing cover plate (5) via a screw rod (4), and directional pressing supports (3) being arranged at the four corners of the base (1), and a hanging ring (7) being arranged on the side of the directional pressing supports (3).

2. The connecting frame boring and milling fixture according to claim 1, characterized in that: The base (1) is a rectangular plate with a plurality of opening grooves on the side wall of the rectangular plate, a step hole is provided at the center of the base (1), a mounting hole is provided around the circumference of the step hole, and a step surface is also provided on the lower bottom surface of the base (1).

3. The connecting frame boring and milling fixture according to claim 1, characterized in that: The positioning core (2) is in the shape of a disk, with mounting holes provided at the center of the disk and at the circumference of the center of the disk, and a wear-resistant sleeve (6) is provided along the outer end of the positioning core (2).

4. The connecting frame boring and milling fixture according to claim 2 or 3, characterized in that: The step hole of the base (1) and the mounting hole opened at the center of the positioning core (2) are on the same axis. When the base (1) is installed on the boring machine, the step hole matches the central axis of the boring machine, and the center of the positioning core (2) coincides with the rotation center of the boring machine.

5. The connecting frame boring and milling fixture according to claim 2 or 3, characterized in that: The mounting hole formed on the circumference of the stepped hole of the base (1) coincides with the mounting hole formed on the circumference of the center of the positioning core (2), and the base (1) and the positioning core (2) are fastened together by bolts.

6. The connecting frame boring and milling fixture according to claim 1, characterized in that: The directional clamping support (3) comprises a bottom plate, a vertical plate vertically arranged on the bottom plate, and a triangular reinforcing plate connecting the bottom plate and the vertical plate, and a clamping adjustment bolt is vertically arranged on the vertical plate, and the bottom plate is connected to the base (1) via bolts.

7. The connecting frame boring and milling fixture according to claim 6, characterized in that: The clamping adjustment bolts of the four directional clamping supports (3) correspond to each other in pairs to fix the connecting frame.

8. The connecting frame boring and milling fixture according to claim 1, characterized in that: The clamping cover plate (5) is a disk with a hollow hole and an open groove on its side wall. One end of the screw rod (4) is installed in the installation hole at the center of the positioning core (2), and the other end is connected to the clamping cover plate (5) through a fastening nut (8).

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