Zero point positioning jig

Abstract

The utility model discloses a zero-point positioning jig which comprises a base and a supporting plate, the base is located below the supporting plate, a plurality of air cylinders are arranged in the top end of the base, a plurality of pull rods are connected to the bottom end of the supporting plate in a threaded mode, each pull rod is embedded in the air cylinder at the corresponding position, and a fixing plate is connected to the supporting plate through a bolt. The base is fixed on the workbench, the air cylinder is fixed in the base, so that the air cylinder and the base form a whole, the pull rod is fixed at the bottom end of the supporting plate, the fixing plate is fixed on the supporting plate, and the clamps are fixed on the fixing plate. The pull rod, the supporting plate, the fixing plate and the clamp form a whole, the clamp is fixed on the workbench by clamping the pull rod through the air cylinder, and the jig enables the electrode clamp to be installed and replaced more conveniently and rapidly.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode clamp jigs, in particular to a zero-point positioning jig. Background Art

[0002] The utility model with publication number CN2767031Y discloses an electrode chuck device for a processing fixture, which includes a connecting piece, one section of the connecting piece is set as a connecting rod, and the other section is set as a screw with an external thread. There is also an integrally formed rectangular aluminum fixture, one side of the fixture is provided with an internal screw hole for locking the screw in the center, and the other side is provided with a positioning groove that can be combined with an electric discharge machining head, and a stop block is respectively provided at the four corners of the surface relative to the internal screw hole, and a connecting portion with a "ㄩ"-shaped cross-section is respectively extended between the two stop blocks, the connecting rod of the connecting piece can be penetrated and fixed to the fixed seat of the electric discharge machining machine spindle, and the fixture is locked to the screw of the connecting piece, and the connecting portion of the fixture can be embedded with the limit block of the fixed seat, so as to greatly simplify the fixture structure and facilitate combination with the connecting piece.

[0003] In actual use of this prior art, the electrode fixture needs to be fixed on the workbench by bolts. Since the countersunk holes on the electrode fixture are distributed in a circular shape and the grooves for fixing on the workbench are distributed in a straight line, the installation and replacement of the electrode fixture are inconvenient. Therefore, a zero-point positioning fixture is needed to meet people's needs. Utility Model Content

[0004] The purpose of the utility model is to provide a zero-point positioning fixture to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a zero-point positioning fixture, including a base and a support plate, the base is located below the support plate, a plurality of cylinders are arranged in the top of the base, a plurality of pull rods are threadedly connected to the bottom end of the support plate, each pull rod is respectively embedded in the cylinder at the corresponding position, the support plate is connected to a fixing plate by bolts, and a plurality of clamps are connected to the fixing plate by bolts.

[0006] Preferably, a plurality of positioning pins are provided on the plane where the cylinder and the base are in contact with each other, and the plurality of positioning pins are all inserted into the top end of the base.

[0007] Preferably, a rubber ring is provided between the outer wall of the cylinder and the annular fitting surface in the base.

[0008] Preferably, an integral sealing frame is connected to the base via bolts, a sealing ring is embedded in the top end of the integral sealing frame, and the sealing ring is in contact with the bottom of the supporting plate.

[0009] Preferably, two air inlets and two air outlets are provided on one end of the base, and the same air inlet is connected to the two cylinders on the same side, and the same air outlet is connected to the two cylinders on the same side.

[0010] Preferably, two countersunk holes are provided on the top end of the base, and the countersunk holes penetrate to the bottom end of the base.

[0011] Preferably, buckle grooves are provided on the bottom ends of the two symmetrical sides of the support plate, and the depth of the buckle grooves is less than the thickness of the support plate.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, the base is fixed on the workbench, the cylinder is fixed in the base, so that the cylinder and the base form a whole, the pull rod is fixed on the bottom end of the support plate, the fixed plate is fixed on the support plate, and the clamp is fixed on the fixed plate, so that the pull rod, the support plate, the fixed plate and the clamp form a whole, and the clamp is fixed on the workbench by clamping the pull rod through the cylinder. The fixture makes the installation and replacement of the electrode clamp more convenient and quick.

[0014] The utility model provides a detachable fixture, which facilitates installation and disassembly of the fixture and also facilitates maintenance and repair of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a zero-point positioning fixture proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of the base and cylinder connection of a zero-point positioning fixture proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the cylinder and the support plate of a zero-point positioning fixture proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the exploded structure of the connection between the support plate and the clamp of a zero-point positioning fixture proposed by the utility model;

[0019] Figure 5 The utility model is a schematic diagram of the exploded structure of the base and the support plate connection of the zero-point positioning fixture.

[0020] In the figure: 1. base; 2. support plate; 3. cylinder; 4. pull rod; 5. fixing plate; 6. clamp; 7. positioning pin; 8. rubber ring; 9. integral sealing frame; 10. sealing ring; 11. air inlet; 12. air outlet; 13. countersunk hole; 14. buckle groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A zero-point positioning fixture includes a base 1 and a support plate 2. The base 1 is located below the support plate 2. A plurality of cylinders 3 are arranged at the top of the base 1. A plurality of pull rods 4 are threadedly connected to the bottom end of the support plate 2. Each pull rod 4 is respectively embedded in the cylinder 3 at a corresponding position. A fixing plate 5 is connected to the support plate 2 by bolts, and a plurality of clamps 6 are connected to the fixing plate 5 by bolts.

[0023] When in use, the base 1 is fixed on the workbench, the cylinder 3 is fixed in the base 1, the fixing plate 5 is fixed on the support plate 2, the clamp 6 is fixed on the fixing plate 5, and the pull rod 4 is fixed on the bottom end of the support plate 2. At this time, the support plate 2 is lifted so that the pull rod 4 is inserted into the cylinder 3, and the cylinder 3 is driven so that the pull rod 4 is fixed in the cylinder 3, so that the support plate 2 is fixed on the base 1, and then the fixing plate 5 and the clamp 6 are fixed on the workbench. The fixture can be used with different types of clamps 6 or vises by adding multiple support plates 2, which is convenient to use and improves the adaptability of the fixture.

[0024] Specifically, in this embodiment, a plurality of positioning pins 7 are provided on the plane where the cylinder 3 and the base 1 are in contact with each other, and the plurality of positioning pins 7 are inserted into the top end of the base 1. The positioning pins 7 limit the rotation of the cylinder 3 in the base 1, thereby ensuring the stability of the cylinder 3 in the horizontal direction.

[0025] Specifically, in this embodiment, a rubber ring 8 is provided between the outer wall of the cylinder 3 and the annular fitting surface in the base 1 , and the rubber ring 8 increases the friction between the cylinder 3 and the base 1 , thereby ensuring the stability of the cylinder 3 in the vertical direction in the base 1 .

[0026] Specifically, in the present embodiment, an integral sealing frame 9 is connected to the base 1 by bolts, a sealing ring 10 is embedded in the top of the integral sealing frame 9, the sealing ring 10 is in contact with the bottom of the support plate 2, the cylinder 3 clamps the pull rod 4, so that the pull rod 4 has a downward pressing tendency, thereby driving the support plate 2 to descend, and the integral sealing frame 9 and the sealing ring 10 provide a buffer for the descent of the support plate 2, thereby ensuring a tighter connection between the support plate 2 and the base 1.

[0027] Specifically, in the present embodiment, two air inlets 11 and two air outlets 12 are provided on one end of the base 1, and the same air inlet 11 is connected to the two cylinders 3 on the same side, and the same air outlet 12 is connected to the two cylinders 3 on the same side, so as to facilitate simultaneous control of the clamping and releasing movements of the two cylinders 3 on the same side.

[0028] Specifically, in this embodiment, two countersunk holes 13 are provided on the top of the base 1 , and the countersunk holes 13 penetrate to the bottom of the base 1 , so as to facilitate fixing the base 1 on a workbench.

[0029] Specifically, in the present embodiment, buckle grooves 14 are provided on the bottom ends of the two symmetrical sides of the pallet 2, and the depth of the buckle grooves 14 is less than the thickness of the pallet 2, thereby reducing the thickness of the two sides of the pallet 2 and facilitating manual handling of the pallet 2.

[0030] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A zero-point positioning fixture, comprising a base (1) and a support plate (2), characterized in that: The base (1) is located below the support plate (2), a plurality of cylinders (3) are arranged in the top of the base (1), a plurality of tie rods (4) are threadedly connected to the bottom end of the support plate (2), each tie rod (4) is respectively embedded in the cylinder (3) at the corresponding position, a fixing plate (5) is connected to the support plate (2) by bolts, and a plurality of clamps (6) are connected to the fixing plate (5) by bolts.

2. A zero point positioning fixture according to claim 1, characterized in that: A plurality of positioning pins (7) are arranged on the plane where the cylinder (3) and the base (1) are in contact with each other, and the plurality of positioning pins (7) are all inserted into the top end of the base (1).

3. A zero point positioning fixture according to claim 1, characterized in that: A rubber ring (8) is provided between the outer wall of the cylinder (3) and the annular fitting surface inside the base (1).

4. The zero-point positioning fixture according to claim 1, characterized in that: An integral sealing frame (9) is connected to the base (1) via bolts, a sealing ring (10) is embedded in the top end of the integral sealing frame (9), and the sealing ring (10) is in contact with the bottom of the support plate (2).

5. The zero-point positioning fixture according to claim 1, characterized in that: Two air inlets (11) and two air outlets (12) are provided on one end of the base (1); the same air inlet (11) is connected to the two cylinders (3) on the same side; the same air outlet (12) is connected to the two cylinders (3) on the same side.

6. The zero-point positioning fixture according to claim 1, characterized in that: Two countersunk holes (13) are provided on the top end of the base (1), and the countersunk holes (13) penetrate to the bottom end of the base (1).

7. The zero-point positioning fixture according to claim 1, characterized in that: Buckle grooves (14) are provided on the bottom ends of the two symmetrical sides of the support plate (2), and the depth of the buckle grooves (14) is less than the thickness of the support plate (2).

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