CN211439038U

CN211439038U - Combined positioning fixture for bending lever

Info

Publication number: CN211439038U
Application number: CN201922211836.7U
Authority: CN
Inventors: 付海; 刘锐; 刘波; 杨杰; 杨兴隆; 杨荣; 吴永刚; 常宁
Original assignee: Huaihai Industry Group Co ltd
Current assignee: Huaihai Industry Group Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-08
Anticipated expiration: 2029-12-11

Abstract

The utility model relates to a combined positioning clamp of a bending lever, which comprises a clamp main body (1) and 3 positioning and clamping components; 3 square table positioning blocks (6) are arranged on the convex end face of the clamp main body (1), and 3 positioning and clamping components are respectively arranged on the end faces of the 3 square table positioning blocks (6); the positioning and clamping assembly comprises an elliptical positioning block (2), a pressing plate (3), a compression screw (4) and 2V-shaped positioning blocks (5); 2V-shaped positioning blocks (5) are fixedly arranged on the convex end face of the clamp main body, and the 2V-shaped positioning blocks (5) are symmetrically arranged on two sides of the square table positioning block (6); the oval positioning blocks (2) are sleeved on the periphery of the square table positioning blocks (6), and parts to be processed are clamped on the 2V-shaped positioning blocks (5) through the compression screws (4) and the pressing plates (3). The utility model provides a special-shaped parts's location clamping difficult problem.

Description

Combined positioning fixture for bending lever

Technical Field

The utility model belongs to the technical field of the machine tool clamp, especially, relate to a combined positioning anchor clamps of lever of bending.

Background

As is known, the clamping and positioning of the bending lever is always a great difficulty in machining, and the main reason is that the bending lever is irregular in shape and difficult to select a positioning reference surface and a clamping action surface, and the machining of the bending lever needs a special clamp and is not universal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combined positioning anchor clamps of lever of bending has solved special-shaped parts's location clamping difficult problem.

The technical scheme of the utility model is that: the utility model provides a combined positioning anchor clamps of lever of bending which characterized by: the combined positioning clamp comprises a

clamp body

1 and 3 positioning and clamping components;

the clamp main body 1 is of a convex structure, a convex upper end cylinder is a chamfered edge cylinder, 3 square table positioning blocks 6 are arranged on a convex end face of the clamp main body 1, the 3 square table positioning blocks 6 are positioned on the diameter of the end face, three U-shaped positioning grooves are arranged on the side face of the convex chamfered edge cylinder, and 3 positioning and clamping assemblies are respectively arranged on the end faces of the 3 square table positioning blocks 6;

the positioning and clamping assembly comprises an elliptical positioning block 2, a pressing plate 3, a compression screw 4 and 2V-shaped positioning blocks 5; 2V-shaped positioning blocks 5 are fixedly arranged on the convex end face of the clamp main body, and the 2V-shaped positioning blocks 5 are symmetrically arranged on two sides of the square table positioning block 6;

the oval positioning block 2 is sleeved on the periphery of the square table positioning block 6, and the compression screw 4 penetrates through the central hole of the pressing plate 3 and is screwed on the square table positioning block 6, so that the machined part is clamped on the 2V-shaped positioning blocks 5.

The utility model has the advantages that the problem of combined positioning and clamping of the bending lever is effectively solved; the problem of low production efficiency of single-station operation is effectively solved; the utility model discloses a mutually supporting of various positioning element and clamping element accomplishes location and the clamping to the lever of bending, and then solves the location clamping difficult problem of various different types of special-shaped parts.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a combined positioning fixture for bending a lever according to the present invention;

fig. 2 is a schematic diagram of the two-dimensional structure of the present invention;

FIG. 3 is a right side view of FIG. 2;

fig. 4 is a cross-sectional view of fig. 2.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the drawings.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the combined positioning fixture for bending lever of the present invention comprises a

fixture body

1 and 3 positioning and clamping assemblies.

The clamp body 1 is of a convex structure, and the convex upper end cylinder is a chamfered edge cylinder, namely the excircle of the convex upper end cylinder is flat in abdication. 3 square table locating blocks 6 are arranged on the convex end face of the clamp body 1, the 3 square table locating blocks 6 are located on the diameter of the end face, three U-shaped locating grooves are formed in the side face of the convex edging cylinder, and the positions of the three U-shaped locating grooves correspond to the positions of the 3 square table locating blocks 6. 3 positioning and clamping components are respectively arranged on the end faces of the 3 square table positioning blocks 6. And a yielding groove is respectively arranged between every two adjacent U-shaped positioning grooves and is used for yielding a cutter for machining the side surface part of the bending lever.

The circular outer edge of the convex base is provided with 4U-shaped pressing grooves. The clamp body 1 is fixed on the end surface of a machine tool spindle through 4U-shaped pressing grooves and bolts.

The positioning and clamping assembly comprises an oval positioning block 2, a pressure plate 3, a compression screw 4 and 2V-shaped positioning blocks 5. The 2V-shaped positioning blocks 5 are symmetrically arranged on two sides of the square table positioning block 6, namely the 2V-shaped positioning blocks 5 are fixedly arranged on the convex end face of the clamp main body.

The oval positioning block 2 is used for positioning the bending lever inner cavity. The center of the oval positioning block 2 is provided with a positioning square hole, and the oval positioning block 2 is provided with a group of abdicating holes. The oval positioning block 2 is sleeved on the periphery of the square table positioning block 6. When the positioning device works, the positioning surface on the processed part is abutted against the V-shaped grooves of the 2V-shaped positioning blocks 5. One end (the part to be processed) of the part to be processed is placed in the three U-shaped positioning grooves of the clamp main body 1, and the elliptical hole on the part to be processed is sleeved on the periphery of the elliptical positioning block 2. The processed parts are fixed on 2V-shaped positioning blocks 5 through a pressing plate 3 and a compression screw 4, namely the compression screw 4 penetrates through a central hole of the pressing plate 3 and is screwed on a square table positioning block 6.

The clamp main body 1 and the oval positioning block 2 are made of 40Cr alloy steel, and the compression screw 4 and the pressing plate 3 are made of 45# medium carbon steel.

The flatness of each surface of the clamp body 1 and the elliptic positioning block 2 is less than 0.01mm, and the parallelism is less than 0.01 mm.

The hardness of the clamp main body 1, the oval positioning block 2, the pressing plate 3 and the compression screw 4 is 35 HRC-40 HRC.

The utility model discloses an operating principle is, oval locating piece 2 cooperates through square hole of center and square platform locating piece 6 in the anchor clamps main part to combine the U-shaped constant head tank in the anchor clamps main part to accomplish the location to the lever of bending, drive clamp plate 3 through rotatory housing screw 4 and accomplish the clamp to being processed the part tight.

The utility model discloses in realize through the square platform locating piece 6 of changing different periphery profiles the location and the clamp of different kind special-shaped parts tightly.

Claims

1. The utility model provides a combined positioning anchor clamps of lever of bending which characterized by: the combined positioning clamp comprises a clamp main body (1) and 3 positioning and clamping components;

the clamp main body (1) is of a convex structure, a convex upper end cylinder is a chamfered edge cylinder, 3 square table positioning blocks (6) are arranged on the convex end face of the clamp main body (1), the 3 square table positioning blocks (6) are located on the diameter of the end face, 3 positioning and clamping assemblies are respectively installed on the end faces of the 3 square table positioning blocks (6), and three U-shaped positioning grooves are formed in the side face of the convex chamfered edge cylinder;

the positioning and clamping assembly comprises an elliptical positioning block (2), a pressing plate (3), a compression screw (4) and 2V-shaped positioning blocks (5); 2V-shaped positioning blocks (5) are fixedly arranged on the convex end face of the clamp main body, and the 2V-shaped positioning blocks (5) are symmetrically arranged on two sides of the square table positioning block (6);

the oval positioning blocks (2) are sleeved on the periphery of the square table positioning blocks (6), and the compression screws (4) penetrate through the center holes of the pressing plates (3) and are screwed on the square table positioning blocks (6), so that the parts to be machined are clamped on the 2V-shaped positioning blocks (5).