CN218592363U - A zero-point positioning base for easy replacement of fixtures - Google Patents

Abstract

The utility model relates to the technical field of machining fixtures, and discloses a zero point positioning base for easy replacement of fixtures. A quick-change mechanism is installed in the installation hole, and the clamp assembly is fixedly connected to the upper side of the fixed seat through the quick-change mechanism. The outer walls of the threads on both sides of the two-way screw are threaded with jackets, and the outer walls of the jacket are one Limiting grooves are arranged on both sides, and the upper side of the fixing seat is opposite to the matching hole, and both sides are threaded to connect the limiting bolts. The jacket clamps the connecting piece, and the top end of the connecting piece is fixedly connected to the lower surface of the fixture assembly. In the utility model, the disassembly operation of the clamp assembly can be conveniently completed only by rotating the two-way screw, which improves the efficiency of clamp replacement and saves waiting time for operation.

Description

A zero-point positioning base for easy replacement of fixtures

technical field

The utility model relates to the technical field of machining fixtures, in particular to a zero-point positioning base for easy replacement of fixtures.

Background technique

In the process of machine tool processing, it is necessary to use fixtures to fix and position the workpiece, which is convenient for the machine tool to process the workpiece. When processing different workpieces, it is necessary to select and replace different fixtures according to the processing technology of the parts. The current existing technology Most of the middle fixtures are fixed on the machine tool by fixing parts. When the fixture needs to be replaced, the fixing part needs to be disassembled to replace the fixture. The existing way of disassembling the fixture is cumbersome, and the replaced fixture needs to be zero-point positioned when it is fixed, resulting in production failure. The waiting time is prolonged, which reduces the working efficiency; therefore, a zero-point positioning base for easy replacement of fixtures is proposed.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a zero-point positioning base for easy replacement of fixtures.

In order to achieve the above object, the utility model adopts the following technical scheme: a zero-point positioning base for easy replacement of fixtures, including a fixing seat and a fixture assembly, the middle part of the fixing seat is provided with a mounting hole in the transverse direction, and the middle part of the upper surface of the fixing seat is provided with There is a matching hole, and a quick-change mechanism is installed in the installation hole, and the clamp assembly is fixedly connected to the upper side of the fixing seat through the quick-change mechanism.

As a further description of the above technical solution:

The quick-change mechanism includes a two-way screw, and the outer walls of both sides of the two-way screw are threaded with jackets, and the outer walls of the jacket are slidably connected to the inner wall of the installation hole, and one side of the outer wall of the jacket is provided with a limiting groove. The upper side of the fixing seat is opposite to the matching hole, and both sides are screwed with the limit bolts, the bottom ends of the limit bolts on both sides are respectively against the limit grooves on both sides, and the two jackets hold the connecting piece , the top end of the connector is fixedly connected to the middle part of the lower surface of the clamp assembly.

As a further description of the above technical solution:

Collets protrude from the opposite side surfaces of the jacket, and an annular groove is provided on one side of the outer wall of the connector, and the collets match the annular groove.

As a further description of the above technical solution:

The connecting piece is arranged in the matching hole.

As a further description of the above technical solution:

Two locating pins are fixed on the upper surface of the fixing seat in half relative to the matching hole, and the top ends of the locating pins are respectively inserted into the positioning holes on the lower surface of the clamp assembly base.

As a further description of the above technical solution:

Both ends of the two-way screw are provided with inner hexagons.

The utility model has the following beneficial effects:

1. In the utility model, through the provided quick-change mechanism, when disassembling the fixture assembly, the disassembly operation of the fixture assembly can be conveniently completed only by rotating the two-way screw, which improves the efficiency of fixture replacement and does not need to be repeated Carry out zero point positioning to save job waiting time.

2. In the utility model, the collet and the annular groove matched in the shape and size of the set make the clamping of the connecting piece in the quick change mechanism more stable, so that the clamp assembly will not slide up and down, and at the same time through the positioning pin and the positioning pin The hole fits together to make the clamping and fixing of the clamp assembly more stable by the quick change mechanism.

Description of drawings

Fig. 1 is a perspective view of a zero-point positioning base that is convenient for replacing fixtures proposed by the utility model;

Fig. 2 is a cross-sectional view of a zero-point positioning base for easy replacement of fixtures proposed by the utility model;

Fig. 3 is a schematic diagram of installation of a quick-change mechanism for a zero-point positioning base that facilitates replacement of fixtures proposed by the utility model;

Figure 4 is a schematic diagram of the installation of a connector for a zero-point positioning base that facilitates the replacement of fixtures proposed by the utility model;

Fig. 5 is a schematic structural diagram of a quick-change mechanism for a zero-point positioning base that is convenient for changing fixtures proposed by the utility model;

Fig. 6 is a schematic diagram of various fixtures of a zero-point positioning base for easy replacement of fixtures proposed by the utility model.

illustration:

1. Fixed seat; 101. Mounting hole; 102. Cooperating hole; 103. Locating pin; 2. Quick change mechanism; 201. Two-way screw; 202. Jacket; 203. Limiting slot; Chuck; 206, connecting piece; 207, annular groove; 208, inner hexagon; 3, fixture assembly.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to Figures 1-6, an embodiment of the utility model is provided: a zero-point positioning base for easy replacement of fixtures, including a fixing seat 1 and a fixture assembly 3, and a mounting hole 101 is arranged in the middle of the fixing seat 1 horizontally, and on the fixing seat 1 There is a matching hole 102 in the middle of the surface, and a quick-change mechanism 2 is installed in the installation hole 101. The clamp assembly 3 is fixedly connected to the upper side of the fixed seat 1 through the quick-change mechanism 2, and the clamp assembly 3 can be conveniently moved from the fixed Remove the top of seat 1.

The quick change mechanism 2 includes a two-way screw 201, the outer walls of both sides of the two-way screw 201 are screwed with a jacket 202, the outer walls of the jacket 202 are slidingly connected to the inner wall of the installation hole 101, and one side of the outer wall of the jacket 202 is provided with a limiting groove 203, The upper side of the fixing seat 1 is opposite to the matching hole 102, and both sides are threaded to connect the limit bolts 204. The bottom ends of the limit bolts 204 on both sides are respectively abutted in the limit grooves 203 on both sides, and the two-way screw rod 201 is rotated to drive both sides. The jacket 202 provided with the threaded hole is relatively close to or far away from the limit guide of the limit bolt 204 and the limit groove 203. The opposite sides of the two jackets 202 clamp the connecting piece 206, and the top end of the connecting piece 206 is fixedly connected to the The middle part of the lower surface of the clamp assembly 3 is relatively close to or far away from the jackets 202 on both sides, thereby clamping or releasing the connecting piece 206 on the opposite side of the two jackets 202, so that the clamp assembly 3 with the top end of the connecting piece 206 fixed can be Fix or detach from the holder 1.

Collets 205 protrude from the opposite side surfaces of the jacket 202, and an annular groove 207 is provided on one side of the outer wall of the connector 206. The collet 205 matches the annular groove 207, and the connector 206 is arranged in the matching hole 102. The collet 205 and the annular groove 207 matched in size make the clamping of the connecting piece 206 in the quick change mechanism 2 more stable, so that the clamp assembly 3 will not move along the axis of the matching hole 102 after being clamped and fixed by the quick change mechanism 2 . Moving up and down, two positioning pins 103 are fixed on the upper surface of the fixing base 1 relative to the matching hole 102. The top ends of the positioning pins 103 are respectively inserted into the positioning holes on the lower surface of the base of the clamp assembly 3. Under the action of the two positioning pins 103 provided Before the clamp assembly 3 is clamped and fixed, the positioning pins 103 are first inserted into the positioning holes provided on the lower surface of the base of the clamp assembly 3 respectively, so as to realize the limitation of the rotation direction of the clamp assembly 3 along the axis of the matching hole 102, and the two-way screw Both ends of the 201 are provided with inner hexagons 208 , and the inner hexagons 208 are arranged to facilitate the rotation of the two-way screw 201 .

Working principle: When using this positioning fixture for machine tool processing, first fix the fixed seat 1 at the zero point of the machine tool, and then select the matching fixture component 3 according to the processing requirements, firstly align the multiple positioning holes set on the lower surface of the fixture component 3 base with multiple The positioning pins 103 are matched respectively to realize the limitation of the clamp assembly 3 along the rotation direction of the axis of the matching hole 102. At this time, the connecting piece 206 in the middle of the lower surface of the base of the clamp assembly 3 is placed in the matching hole 102. The inner hexagon 208 at one end of the screw 201 rotates the two-way screw 201, and drives the jacket 202 provided with threaded holes on both sides to slide relatively close to the limit guide of the limit bolt 204 and the limit groove 203, so that the matching hole 102 The connecting piece 206 inside is clamped, so that the clamp assembly 3 is fixed on the fixed seat 1, and the collet 205 and the annular groove 207 with a matching shape and size are provided at the same time, so that the clamping of the connecting piece 206 in the quick change mechanism 2 The holding is more stable, so that the clamp assembly 3 will not move up and down along the axis of the matching hole 102 after being clamped and fixed by the quick-change mechanism 2, and the clamping and fixing of the clamp assembly 3 by the quick-change mechanism 2 is more stable through two-way limiting; When the clamp assembly 3 is replaced according to production requirements, the clamp assembly 3 can be conveniently disassembled only by rotating the two-way screw 201, and the zero point positioning does not need to be repeated, thereby improving the working efficiency.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (6)

1. The utility model provides a zero point location base convenient to change anchor clamps, includes fixing base (1) and anchor clamps subassembly (3), its characterized in that: the fixture is characterized in that a mounting hole (101) is transversely formed in the middle of the fixing seat (1), a matching hole (102) is formed in the middle of the upper surface of the fixing seat (1), a quick-change mechanism (2) is arranged in the mounting hole (101), and the fixture component (3) is fixedly connected to the upper side of the fixing seat (1) through the quick-change mechanism (2).

2. The zero point positioning base convenient for replacing the clamp according to claim 1, characterized in that: the quick-change mechanism (2) comprises a bidirectional screw (201), the outer walls of threads on two sides of the bidirectional screw (201) are in threaded connection with a jacket (202), the outer wall of the jacket (202) is in sliding connection with the inner wall of the mounting hole (101), one side of the outer wall of the jacket (202) is provided with a limiting groove (203), the opposite matching hole (102) on the upper side of the fixing base (1) is in threaded connection with limiting bolts (204) on two opposite sides, the bottom ends of the limiting bolts (204) on two sides are respectively arranged in the limiting grooves (203) on two sides, connecting pieces (206) are arranged on opposite sides of the two jackets (202), and the top ends of the connecting pieces (206) are fixedly connected to the middle of the lower surface of the clamp assembly (3).

3. The zero point positioning base convenient for replacing the clamp according to claim 2, characterized in that: the clamping heads (205) are arranged on the opposite side surfaces of the clamping sleeve (202), an annular groove (207) is formed in one side of the outer wall of the connecting piece (206), and the clamping heads (205) are matched with the annular groove (207).

4. The zero point positioning base convenient for replacing the clamp according to claim 2, characterized in that: the connector (206) is disposed within the mating bore (102).

5. The zero point positioning base convenient for replacing the clamp according to claim 1, characterized in that: the upper surface of the fixing seat (1) is provided with two positioning pins (103) in a bisection mode relative to the matching holes (102), and the top ends of the positioning pins (103) are respectively arranged in the positioning holes in the lower surface of the base of the clamp assembly (3).

6. The zero point positioning base convenient for replacing the clamp according to claim 2, characterized in that: and inner hexagonal heads (208) are arranged at two ends of the bidirectional screw (201).

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