CN205703364U - A kind of non-standard component Flexible Fixturing device - Google Patents

Abstract

The utility model relates to a flexible clamping device for non-standard parts, which comprises a fixture main body, a pressing block, and a clamping screw. The fixture main body is composed of a regular polygon plate and a connecting rod. There is a threaded hole in the middle, and the connecting rod and several strip plates of the regular polygon plate are hinged evenly on the circumference; The tightening block is composed of bolts, nuts and cylindrical protrusions arranged at the bottom of the bolts. Both sides of the cylindrical protrusions are symmetrically milled and flattened; the through hole at the bottom of the connecting rod matches the outer diameter of the bolt; the upper part of the clamping screw is milled flat, and the diameter of the lower part is smaller than that of the clamp. The thread diameter of the holding screw matches the threaded hole provided in the middle of the strip plate of the fixture main body. The utility model has a compact structure and can clamp and fix workpieces of various specifications and sizes with non-standard shapes.

Description

A flexible clamping device for non-standard parts

technical field

The utility model relates to a special clamp, in particular to a fast positioning and clamping device for non-standard shape workpieces, in particular to a flexible clamping device for non-standard parts, which belongs to the technical field of tooling fixtures for machine tools.

Background technique

In the processing of machining centers, there are more and more types of parts and their shapes are becoming more and more irregular. When milling machine processing and milling machining centers process non-standard shape block parts, often because of the irregular shape of the parts, the standard fixture cannot be clamped well in the circumferential direction due to the error in length and dimension, resulting in incomplete clamping and processing. Complete, so that the specific production and processing can not be carried out. There is an urgent need for a flexible clamping device for non-standard parts, which can make the irregular-shaped parts be positioned and tightened. The clamping device of the parts is not seen to have low manufacturing cost, simple and practical structure.

Utility model content

The utility model aims at the deficiencies of the above-mentioned prior art, and provides a flexible clamping device for non-standard parts with reasonable and simple structure, easy manufacture and convenient use.

The utility model is achieved in this way, a flexible clamping device for non-standard parts, which is characterized in that it includes a clamp body, a compression block, and a clamping screw. The clamp body is composed of a regular polygonal plate and a connecting rod, and the regular polygonal plate It is composed of several strip-shaped plates, with threaded holes in the middle of the strip-shaped plates, and the connecting rods are evenly distributed and hinged on the circumference with several strip-shaped plates of regular polygonal plates; the connecting rods are "L"-shaped plates, and the upper part is hinged The strip-shaped plate of the polygonal plate has a through hole at the bottom;

The pressing block is composed of a bolt, a nut and a cylindrical protrusion arranged at the bottom of the bolt. The two sides of the cylindrical protrusion are symmetrically milled and flattened, and are matched with the fastening groove of the machine tool table; the through hole at the bottom of the connecting rod matches the outer surface of the bolt. diameter match;

The upper part of the clamping screw is milled flat, and the diameter of the lower part is smaller than the thread diameter of the clamping screw. The thread of the clamping screw matches the threaded hole provided in the middle of the strip plate of the clamp body, and the clamping screw is screwed on the center of the strip plate of the clamp body. in the threaded hole.

The regular polygon splint has N+2 sides.

The strip plate forms an included angle of 45° with the horizontal direction.

The utility model has a reasonable and simple structure, is easy to manufacture, and is convenient to use. Through the utility model, it is composed of a clamp main body, a pressing block, and a clamping screw; the clamp main body is composed of a regular polygon plate and a connecting rod, and the regular polygon plate is composed of a strip plate Composition, the strip plate is at an angle of 45° with the horizontal direction, there is a threaded hole in the middle of the strip plate, and the regular polygon plate is N+2 polygons (N is a natural number, this practical The new type takes the hexagon as an example), and there are 4 connecting rods perpendicular to the direction of the regular polygonal plate, which are evenly distributed and hinged on the circumference of the regular polygonal plate. There is a through hole, the compression block is made of matching bolts and nuts, the bottom of the bolt is provided with a cylindrical protrusion, the through hole matches the outer diameter of the bolt in the compression block, the two sides of the cylindrical protrusion are symmetrically milled and flattened, and the cylindrical protrusion is aligned with the machine tool The fastening groove of the workbench matches; the upper part of the clamping screw is milled and flattened, and the diameter of the lower part is smaller than the diameter of the thread, and the thread matches the threaded hole set in the middle of the bar plate of the fixture body.

The utility model aims at the deficiencies of the prior art, and provides a flexible clamping device for non-standard parts with convenient operation, small investment and strong practicability. The utility model has a compact structure and can clamp non-standard shapes of various sizes The workpiece is clamped and fixed, and the fixture is positioned and fixed quickly, ensuring quality and improving production efficiency. Improve the processing technology level of the existing processing center equipment and realize processing automation.

Description of drawings

Fig. 1 is the utility model top view schematic diagram;

Fig. 2 is a schematic sectional view of A-A of Fig. 1;

Fig. 3 is a top view schematic diagram of the pressing block;

In the figure: 1 through hole, 2 pressing block, 3 clamping screw, 4 fixture main body, 5 threaded hole, 6 regular polygonal plate, 7 connecting rod, 8 bolt, 9 nut, 10 cylindrical protrusion.

detailed description

Below in conjunction with accompanying drawing and description of drawings, the utility model is further described.

A flexible clamping device for non-standard parts, including a clamp body 4, a compression block 2, and a clamping screw 3. The clamp body 4 is composed of a regular polygonal plate 6 and a connecting rod 7. The regular polygonal plate 6 is composed of several strip plates. The strip-shaped plate forms an included angle of 45° with the horizontal direction, and there is a threaded hole 5 in the middle of the strip-shaped plate, and the connecting rod 7 and several strip-shaped plates of the regular polygonal plate 6 are evenly distributed and hinged on the circumference; the connecting rod 7 is "L" type Plate, the strip plate of the regular polygonal plate 6 hinged on the upper part, the bottom is provided with a through hole 1; the pressing block 2 is composed of a bolt 8, a nut 9 and a cylindrical protrusion 10 arranged at the bottom of the bolt 8, and the cylindrical protrusion 10 is symmetrically milled on both sides. flat, and match with the fastening groove of the machine tool workbench; the through hole 1 at the bottom of the connecting rod 7 matches the outer diameter of the bolt 8; The thread of the screw 3 matches the threaded hole 5 provided in the middle of the strip plate of the fixture main body 4 , and the clamping screw 3 is screwed in the threaded hole 5 of the strip plate of the fixture main body 4 . In the present invention, the regular polygonal plate 6 has N+2 sides.

Specifically, as shown in Figure 1 and Figure 2, the utility model is composed of a clamp body 4, a compression block 2, and a clamping screw 3; the clamp body 4 is composed of a regular polygonal plate 6 and a connecting rod 7, and the regular polygonal plate is composed of strips The strip plate is composed of a 45° angle with the horizontal direction, and there is a threaded hole 5 in the middle. The regular polygon plate is determined by the complexity of the shape of the non-standard part, and it is an N+2 polygon (N is a natural number, this specification Taking the hexagon as an example), there are four connecting rods 7 perpendicular to the direction of the regular polygonal plate, which are evenly distributed and hinged on the circumference of the regular polygonal plate. The plate has a through hole 1 at the bottom, matching the outer diameter of the bolt 8 of the compression block 2, the compression block 2 is formed by matching the bolt 8 and the nut 9, and a cylindrical protrusion 10 is provided at the bottom of the bolt 8, and the cylindrical protrusion 10 Both sides are symmetrically milled and flattened, and the cylindrical protrusion 10 is matched with the fastening groove of the machine tool table;

When in use, use the pressing block 2 to match and fasten the fastening groove of the machine tool table through the through hole 1 provided at the bottom of the connecting rod 7, that is, the cylindrical protrusion 10 provided at the bottom of the bolt 8 is placed in the fastening groove of the machine tool table , to fix the bolt 8 on the machine tool table, then pass the bolt 8 on the pressing block 2 through the through hole 1 at the bottom of the connecting rod 7, after the bolt 8 passes through the through hole 1, use the nut 9 to tighten it, so that the clamping The whole device is fixed on the machine table. Then place the parts with non-standard and irregular shape in the middle of the fixture main body 4, and by rotating the clamping screw 3 top milling flat, the clamping screw 3 passes through the threaded hole 5 in the middle of the strip plate, so that the clamping screw 3 bottom is in contact with the non-standard Surface contact fastening of parts with standard irregular shapes. Parts with non-standard and irregular shapes are fastened on the machine tool workbench through a plurality of clamping screws 3 provided on the fixture main body 4, so that the cutting process can be performed conveniently.

Claims (3)

1. a non-standard component Flexible Fixturing device, is characterized in that: include jig main body (4), compact heap (2), clamp screws (3), described jig main body (4) is made up of regular polygon plate (6) and connecting rod (7), and regular polygon plate (6) is by some bar shaped plates Composition, is provided with screwed hole (5) in the middle of bar shaped plate, some bar shaped plates of described connecting rod (7) and regular polygon plate (6) are being justified On week uniform hinged；Described connecting rod (7) is " L " template block, and the bar shaped plate of upper articulation regular polygon plate (6), bottom sets There is through hole (1)；

Described compact heap (2) by bolt (8), nut (9) and be arranged at bolt (8) bottom cylindrical projection (10) constitutes, justify Protruding (10) both sides symmetry milling of post is flat, and mates with platen binding groove；Described connecting rod (7) bottom through hole (1) with The external diameter of bolt (8) matches；

Described clamp screws (3) top milling is flat, and lower diameter is less than the diameter of thread of clamp screws (3), the spiral shell of clamp screws (3) Stricture of vagina mates with the screwed hole (5) arranged in the middle of the bar shaped plate of jig main body (4), and clamp screws (3) is threaded onto jig main body (4) In the screwed hole (5) of bar shaped plate.

A kind of non-standard component Flexible Fixturing device the most according to claim 1, is characterized in that: described regular polygon plate (6) There is N+2 bar limit.

A kind of non-standard component Flexible Fixturing device the most according to claim 1, is characterized in that: described bar shaped plate and level Direction is 45 ° of angles.