CN108000192A - A kind of three disjunctor fixture of mould small workpiece for being applied to four axis lathes - Google Patents

Abstract

A kind of the technical scheme is that three disjunctor fixture of mould small workpiece for being applied to four axis lathes, including the base being fixed on lathe turntable, the middle of the base extends upward section grip slipper triangular in shape, two chucks are respectively connected with described three sides of grip slipper, two chucks are arranged up and down, the chuck outer surface is provided with positioning column, chuck hub is axially provided with the endoporus for blind rivet insertion, the axial middle part of the endoporus offers perforation chuck sidewall radial hole, the radial hole is along the circumferential direction equiangularly arranged and radial hole in be provided with steel ball, the steel ball can radially the activity of through hole direction without departing from radial hole, the steel ball adjusting mechanism of control steel ball movement is provided with the outside of the radial hole of the chuck.Structure of the present invention is novel, can realize quick-clamping, and once can 6 workpiece of clamping, save the loading and unloading time, improve processing efficiency.

Description

A three-piece fixture for small mold workpieces applied to four-axis machine tools

technical field

The invention relates to a clamp, in particular to a three-unit clamp for a small mold workpiece applied to a four-axis machine tool.

Background technique

The peripheral machine tool is widely used in mechanical processing, especially in the processing of small mold workpieces. It has high processing precision, can process workpieces of various shapes, and has high processing efficiency. It is very common in mold processing workshops. However, the fixtures that hold the workpiece are generally ordinary fixtures. Although they can meet the processing requirements, loading and unloading operations must be performed after each workpiece is processed, which is inefficient.

Contents of the invention

In view of the above problems, the present invention aims to provide a three-piece clamp for small mold workpieces applied to four-axis machine tools. material times, greatly improving work efficiency.

The technical solution of the present invention is a three-joint fixture for mold small workpieces applied to four-axis machine tools, which includes a base fixed on the rotary table of the machine tool, a clamping seat with a triangular cross-section extending upward from the middle of the base, and the clamp Two chucks are connected to the three sides of the holding seat, and the two chucks are arranged up and down. The outer surface of the chuck is provided with a positioning column, and the center of the chuck is axially provided with an inner hole for the pull rivet to insert. The axial middle part of the inner hole is provided with a radial through hole through the side wall of the chuck. The radial through hole is arranged at an equal angle along the circumferential direction and steel balls are arranged in the radial through hole, and the steel ball can move along the direction of the radial through hole. But it will not break away from the radial through hole, and a steel ball adjustment mechanism for controlling the movement of the steel ball is arranged outside the radial through hole of the chuck.

Preferably, a stepped hole is provided at the place where the chuck is installed on the clamping seat, the outer contour of the chuck is in the shape of a "convex", the front end of the chuck is inserted into the stepped hole, and the steel ball adjustment mechanism includes a The piston block in the piston block, the outer side of the piston block is in sealing contact with the clamping seat, and the inner side is in sealing contact with the chuck. The inner surface of the piston block is provided with an annular groove for partially embedding the steel ball. The left and right sides of the piston block are respectively provided with The air inlet and outlet passages of the air compressor, when the piston block moves to one side, the annular groove is located directly outside the radial through hole.

Preferably, a machining hole is vertically provided in the middle of the base, and the machining hole communicates with the stepped hole on the clamping seat.

Preferably, an annular groove and an elastic sealing ring are provided on the outer side of the piston block in contact with the clamping seat, and an annular groove and an elastic sealing ring are provided on the inner side of the piston block in contact with the chuck.

Preferably, threaded connection holes are provided on the surface of the chuck in the circumferential direction, and screws pass through the threaded connection holes to fix the chuck on the clamping seat.

The invention has a novel structure, can realize fast clamping, and can clamp 6 workpieces at a time. After processing 2 workpieces on one side, the base can be rotated 120 degrees through the machine tool to continue processing, saving loading and unloading time, and improving improved processing efficiency.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the top view of the present invention;

Fig. 3 is a sectional view along the A-A direction in Fig. 2;

Fig. 4 is a partial enlarged view of place B in Fig. 3;

Fig. 5 is a partial enlarged view of the state where the piston block at C in Fig. 3 presses the steel ball inward;

Fig. 6 is a partial enlarged view when the annular groove of the piston block at C in Fig. 3 is aligned with the steel ball;

Fig. 7 is the front view of the present invention;

Fig. 8 is a sectional view along the D-D direction in Fig. 7;

Fig. 9 is a partial enlarged view at E in Fig. 8;

Among them: 1—base; 2—clamping seat; 3—chuck; 4—positioning column; 5—inner hole; 6—radial through hole; 7—steel ball adjustment mechanism; 8—stepped hole; 9—piston block; 10—annular groove; 11—processing hole; 12—threaded connection hole.

Detailed ways

As shown in Figures 1 to 9, the present invention provides a three-piece clamp for small mold workpieces applied to four-axis machine tools. Triangular clamping seat 2, two chucks 3 are connected to the three sides of the clamping seat 2, the two chucks 3 are arranged up and down, the outer surface of the chuck 3 is provided with a positioning column 4, the chuck 3. An inner hole 5 for inserting a pull rivet is provided in the center axially. The inner hole 5 is provided with a radial through hole 6 through the side wall of the chuck 3 in the axial middle. The radial through hole 6 is arranged at an equal angle along the circumferential direction. And the radial through hole is provided with a steel ball, the steel ball can move along the direction of the radial through hole 6 but will not break away from the radial through hole 6, the outer side of the radial through hole 6 of the chuck 3 is provided with a mechanism to control the movement of the steel ball. Steel ball adjustment mechanism 7.

Preferably, a stepped hole 8 is provided at the place where the chuck 3 is installed on the clamping seat 2, the outer contour of the chuck 3 is in a "convex" shape, the front end of the chuck 3 is inserted into the stepped hole 8, and the steel ball adjusts The mechanism 7 includes a piston block 9 arranged in the stepped hole 8. The outer side of the piston block 9 is in sealing contact with the clamping seat 2, and the inner side is in sealing contact with the chuck 3. The inner surface of the piston block 9 is provided with a part for embedding of steel balls. The annular groove 10 and the left and right sides of the piston block 9 are respectively provided with air inlet and outlet passages communicating with the external air compressor. When the piston block 9 moves to one side, the annular groove 10 is located directly outside the radial through hole 6 .

Preferably, a processing hole 11 is vertically provided in the middle of the base 1 , and the processing hole 11 communicates with the stepped hole 8 on the clamping seat 2 .

Preferably, an annular groove and an elastic sealing ring are provided on the outside of the piston block 9 in contact with the clamping seat 2 , and an annular groove and an elastic sealing ring are provided on the inside of the piston block 9 in contact with the chuck 3 .

Preferably, a threaded connection hole 12 is provided on the surface of the chuck 3 in the circumferential direction, and a screw passes through the threaded connection hole 12 to fix the chuck 3 on the clamping seat 2 .

When in use, the workpiece to be processed is clamped on the tooling, and the tooling is connected to the inner hole 5 of the chuck 3 through a pull nail. The surface of the tooling is positioned radially through the positioning column 4, and the left and right movement of the piston block 9 is controlled pneumatically to push The steel ball in the radial through hole 6 makes the steel ball in the inwardly compressed state or the active state, that is to say, the pull rivet is in the locked state or the free disassembly state, which is specifically reflected when the surface of the piston block 9 compresses the radial through hole 6, the chute on the rivet is embedded into the steel ball, and the rivet is in a clamped state to realize the axial positioning of the rivet. When the annular groove 10 on the surface of the piston block 9 is aligned with the radial through hole 6 When the steel ball is removed, the steel ball can move outward for a short distance, so that the pull stud can be freely inserted or pulled out from the inner hole 5, the whole process is convenient and fast, and the use is safe and reliable.

The above is only a preferred embodiment of the present invention, and is not intended to limit the invention in any form. Any simple modifications, equivalent changes or modifications made to the above embodiments according to the technical principles of the present invention still belong to this invention. within the scope of the technical solution of the invention.

Claims (5)

1. A three-piece fixture for mold small workpieces applied to four-axis machine tools, characterized in that it includes a base (1) fixed on the machine tool rotary table, and the middle part of the base (1) extends upwards to form a triangular-shaped clamp. The holder (2), two chucks (3) are connected to the three sides of the holder (2), the two chucks (3) are arranged up and down, and the outer surface of the chuck (3) is set There is a positioning column (4), and the center of the chuck (3) is axially provided with an inner hole (5) for the insertion of the pull rivet, and the middle part of the inner hole (5) is provided with a radial direction through the side wall of the chuck (3). Through holes (6), the radial through holes (6) are arranged at equal angles along the circumferential direction and steel balls are arranged in the radial through holes, and the steel balls can move along the direction of the radial through holes (6) without breaking away from the radial through holes. Facing the through hole (6), a steel ball adjusting mechanism (7) for controlling the movement of the steel ball is provided outside the radial through hole (6) of the chuck (3). 2. A three-piece clamp for small mold workpieces applied to four-axis machine tools according to claim 1, characterized in that: a stepped hole ( 8), the outer shape of the chuck (3) is "convex", the front end of the chuck (3) is inserted into the stepped hole (8), and the steel ball adjustment mechanism (7) includes a In the piston block (9), the outer side of the piston block (9) is in sealing contact with the clamping seat (2), and the inner side is in sealing contact with the chuck (3). The inner surface of the piston block (9) is provided with a steel ball supply part The embedded annular groove (10), the left and right sides of the piston block (9) are respectively provided with air inlet and outlet passages connected to the external air compressor, and the annular groove (10) is located in the radial channel when the piston block (9) moves to one side. The hole (6) is facing the outside. 3. A three-piece fixture for small mold workpieces applied to four-axis machine tools according to claim 2, characterized in that: the middle part of the base (1) is vertically provided with a processing hole (11), and the processing hole (11) communicates with the stepped hole (8) on the clamping seat (2). 4. A three-unit fixture for mold small workpieces applied to four-axis machine tools according to claim 2, characterized in that: the outer side of the piston block (9) is provided with an annular groove at the contact point with the clamping seat (2) and an elastic sealing ring, an annular groove and an elastic sealing ring are provided at the inner side of the piston block (9) in contact with the chuck (3). 5. A three-piece fixture for small mold workpieces applied to four-axis machine tools according to claim 2, characterized in that: the surface of the chuck (3) is provided with threaded connection holes (12) in the circumferential direction, and the screws pass through The threaded connection hole (12) fixes the chuck (3) on the clamping seat (2).