CN113183058A

CN113183058A - Universal clamp

Info

Publication number: CN113183058A
Application number: CN202110420303.9A
Authority: CN
Inventors: 张绪国
Original assignee: Hubei Hongbo Automobile Industry Intelligent Equipment Co ltd
Current assignee: Hubei Hongbo Automobile Industry Intelligent Equipment Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-07-30
Anticipated expiration: 2041-04-19
Also published as: CN113183058B

Abstract

The application relates to a universal clamp which comprises a box body, an utricule and a thimble; the box body is hollow; the bag body is flexible and arranged in the box body, and is provided with an inlet and an outlet for the fluid to enter and exit the bag body; a plurality of thimbles are arranged in parallel; the thimble is along self axial sliding connection box body, and the one end of thimble stretches into the surface of box body and butt utricule, and the other end of thimble stretches out the surface that the box body is used for the butt work piece. When the universal fixture works, the two universal fixtures are mutually matched and clamped at two ends of a workpiece; when a workpiece is clamped, fluid (gas or liquid) is injected into the bag body through the inlet, so that the bag body is expanded to push the thimble to extend out of the box body until the end part of the thimble abuts against the surface of the workpiece; in the process of clamping workpieces, the bag body is flexible, so that the multiple ejector rods are self-adaptive to the surfaces of the workpieces, namely after clamping is completed, the end parts of the multiple ejector rods are all abutted against the surfaces of the workpieces, clamping of various workpieces can be realized, clamps do not need to be replaced, and production efficiency is improved.

Description

Universal clamp

Technical Field

The application relates to the field of tool fixtures, in particular to a universal fixture.

Background

The jig is a device for fixing a processing object (workpiece) to take a correct position to receive a construction or inspection in a machine manufacturing process.

Generally, a single clamp can hold only one or a limited number of workpieces. Such as: the four-jaw chuck can clamp a rectangular workpiece; the three-jaw chuck can clamp a regular triangle workpiece or a regular hexagon workpiece.

On the production line, if various workpieces flow, the clamps can be required to be frequently replaced, and the production efficiency is influenced.

Disclosure of Invention

In order to accomplish the work piece centre gripping fast when flowing through multiple work piece, improve production efficiency, this application provides a universal fixturing.

The application provides a universal clamp adopts following technical scheme:

a universal clamp comprises a box body, an airbag body and a thimble;

the box body is hollow inside;

the bag body is flexible and arranged in the box body, and is provided with an inlet and an outlet for fluid to enter and exit the bag body;

a plurality of thimbles are arranged in parallel; the thimble is along self axial sliding connection box body, just the one end of thimble stretches into the surface of box body and butt utricule, the other end of thimble stretches out the surface that the box body is used for the butt work piece.

By adopting the technical scheme, when the universal fixture works, the two universal fixtures are matched with each other and clamped at two ends of a workpiece; when a workpiece is clamped, fluid (gas or liquid) is injected into the bag body through the inlet, so that the bag body is expanded to push the thimble to extend out of the box body until the end part of the thimble abuts against the surface of the workpiece;

in the process of clamping workpieces, the bag body is flexible, so that the multiple ejector rods are self-adaptive to the surfaces of the workpieces, namely after clamping is completed, the end parts of the multiple ejector rods are all abutted against the surfaces of the workpieces, clamping of various workpieces can be realized, clamps do not need to be replaced, and production efficiency is improved.

Optionally, the box body comprises a main body and a box cover;

the box cover is provided with a through groove for the thimble to penetrate through, and the side wall of the through groove is parallel to the axis of the thimble;

the box cover is also provided with a plurality of limiting pins which are arranged side by side and are positioned in the through grooves; the limiting pin is vertical to the axis of the thimble;

the thimble is equipped with the spacing groove, the axial extension of spacing groove edge thimble, just the spacing groove slides and cup joints in the periphery of spacer pin.

Through adopting above-mentioned technical scheme, the periphery of the lateral wall butt spacer pin of spacing groove to the stroke and the extreme position of restriction thimble avoid the thimble to break away from the box body on the one hand, and on the other hand guarantees that the one end of thimble stretches out the box body all the time in order to be used for the butt work piece.

Optionally, a limiting surface is arranged on the periphery of the limiting pin, the limiting surface is parallel to the axis of the thimble, and the limiting surface is parallel to the axis of the limiting pin;

the limiting surface is in sliding connection with the side wall of the limiting groove.

Through adopting above-mentioned technical scheme, spacing face cooperation spacing groove's lateral wall guarantees that the axis of thimble is stable, avoids the swing of thimble axis.

Optionally, the peripheries of the adjacent thimbles are mutually attached in a sliding manner;

the limiting groove penetrates through the thimble along the axial direction of the limiting pin; and one limiting pin penetrates through the limiting grooves of the multiple thimbles.

By adopting the technical scheme, the distance between the adjacent thimbles is shortened, the density of the thimbles is increased, so that the contact area between the clamp and a workpiece is increased, and the clamping stability is improved.

Optionally, the axis of the limit pin intersects with the axis of the thimble.

Through adopting above-mentioned technical scheme, the spacing groove is corresponding to the spacer pin setting to make the ejector pin be the symmetry about self axis, be favorable to the stable removal of ejector pin.

Optionally, the box cover is provided with a limiting hole, and the limiting pin penetrates through the limiting hole;

the main part cup joints in the periphery of lid, just the inner periphery of main part covers spacing hole.

By adopting the technical scheme, the inner periphery of the main body is utilized to block the limiting pin from separating from the limiting hole, so that the stable work of the ejector pin is ensured.

Optionally, the thimble comprises an abutting rod and a guide rod which are coaxially arranged; the outer diameter of the guide rod is smaller than that of the abutting rod; the peripheries of the adjacent abutting rods are mutually attached in a sliding manner;

the box body also comprises a clapboard; the partition plate is arranged in the main body and is vertical to the axis of the thimble; the bag body is positioned on one side of the clapboard, which is far away from the box cover;

the baffle is equipped with the guiding hole, the guide bar slides to inlay and establishes to the guiding hole in, just the one end that the lid was kept away from to the guide bar runs through the baffle and the surface of butt utricule.

Through adopting above-mentioned technical scheme, the axis of thimble is guaranteed to the guide bar cooperation guiding hole stably, avoids the swing of thimble axis.

Optionally, one end of the box body, from which the thimble extends, is a ball head.

Optionally, a one-way valve or an electromagnetic valve is arranged at an inlet of the bag body, and the fluid flows into the bag body through the inlet in a one-way manner; an electromagnetic valve is arranged at the outlet of the bag body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the universal fixture works, the two universal fixtures are mutually matched and clamped at two ends of a workpiece; when a workpiece is clamped, fluid (gas or liquid) is injected into the bag body through the inlet, so that the bag body is expanded to push the ejector pin to extend out of the box body until the end part of the ejector pin abuts against the surface of the workpiece, and the workpiece is clamped;

2. in the process of clamping the workpiece, the bag body is flexible, so that the plurality of ejector rods are self-adaptive to the surface of the workpiece, namely, after clamping is completed, the end parts of the plurality of ejector rods are all abutted against the surface of the workpiece, the clamping of workpieces in various shapes can be realized, clamps do not need to be replaced, and the production efficiency is improved;

3. the peripheries of the adjacent thimbles are mutually attached in a sliding mode, the distance between the adjacent thimbles is shortened as far as possible, the density of the thimbles is increased, the contact area between the clamp and a workpiece is increased, and the clamping stability is improved.

Drawings

FIG. 1 is a schematic view showing the overall structure of a universal chuck.

FIG. 2 is a sectional view of the universal chuck in the embodiment 1.

Fig. 3 is a schematic view of the connection relationship among the box cover, the partition plate and the thimble in embodiment 1.

FIG. 4 is a sectional view of the universal chuck in accordance with embodiment 2.

Fig. 5 is a schematic view of a connection relationship between the thimble and the stopper pin in embodiment 2.

FIG. 6 is a sectional view of the universal chuck in accordance with embodiment 3.

Fig. 7 is a schematic view of the connection relationship between the capsule and the thimble in embodiment 3.

Description of reference numerals: 1. a box body; 11. a main body; 12. a partition plate; 121. a guide hole; 13. a box cover; 131. a convex edge; 132. a through groove; 133. a limiting hole; 134. a spacing pin; 135. a limiting surface; 2. a capsule body; 21. an inlet; 22. an outlet; 23. a main bag; 24. a gas column; 3. a thimble; 31. a butting rod; 311. a limiting groove; 32. a guide rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses universal clamp can realize the centre gripping to various different shape work pieces.

Example 1

Referring to fig. 1 and 2, the universal fixture comprises a box body 1, a capsule body 2 and a thimble 3.

Referring to fig. 2, the case body 1 includes a body 11, a partition 12, and a case cover 13. The partition plate 12 is arranged in the main body 11 and can be fixedly connected by means of bonding and the like; meanwhile, a chamber for installing the bag body 2 is enclosed between one side of the partition plate 12, which is far away from the box cover 13, and the inner wall of the main body 11; one end of the box cover 13 is embedded in the main body 11, and the outer periphery of the box cover 13 is attached to the inner periphery of the main body 11; meanwhile, the other end of the box cover 13 is provided with a flange 131 at its periphery, the periphery of the flange 131 is flush with the periphery of the main body 11, and the end face of the flange 131 facing the partition 12 is used for abutting against the end face of the main body 11.

Referring to fig. 2, the capsule 2 is provided with an inlet 21 and an outlet 22 for the fluid (high-pressure gas or hydraulic oil); the inlet 21 is communicated with a one-way valve or an electromagnetic valve through a pipeline and controls the fluid to flow into the capsule body 2 in one way through the inlet 21; the outlet 22 communicates with a solenoid valve through a conduit to control the discharge of fluid. Meanwhile, in the embodiment, the wear-resistant rubber layer can be arranged on the periphery of the capsule body 2 so as to improve the wear resistance of the capsule body 2 and ensure the service life.

Referring to fig. 2 and 3, the partition 12 is provided with guide holes 121 at intervals, the guide holes 121 penetrate through the partition 12 in a direction perpendicular to the partition 12, and the plurality of guide holes 121 are in a rectangular array. The thimble 3 includes a coaxially disposed abutting rod 31 and a guiding rod 32. The guide rod 32 is slidably inserted into the guide hole 121, and one end of the guide rod 32 away from the abutting rod 31 abuts against the outer surface of the capsule 2.

The box cover 13 is provided with a through groove 132 for the thimble 3 to pass through, the through groove 132 penetrates through the box cover 13 along the axial direction of the thimble 3, and the side wall of the through groove 132 is parallel to the axis of the thimble 3.

The outer diameter of the abutting rods 31 is larger than that of the guide rods 32, the peripheries of the adjacent abutting rods 31 are attached to each other, and the periphery of the abutting rod 31 located at the periphery is in sliding fit with the side wall of the through groove 132 along the axial direction of the abutting rod 31. Meanwhile, one end of the abutting rod 31, which is far away from the guide rod 32, is set as a ball head, and the outer surface of the ball head is used for abutting against the outer surface of the workpiece.

The box cover 13 is further provided with a limiting hole 133, and a limiting pin 134 penetrates through the limiting hole 133. The limiting hole 133 penetrates through the box cover 13 along a direction perpendicular to the axis of the thimble 3 and is communicated with the through groove 132. Meanwhile, when the box cover 13 is inserted into the main body 11, the inner circumference of the main body 11 covers the opening of the limiting hole 133 departing from the through groove 132 to block the limiting pin 134 from escaping from the limiting hole 133.

The abutting rod 31 is provided with a limiting groove 311, and the limiting groove 311 penetrates through the abutting rod 31 along the radial direction of the abutting rod 31 and extends along the axial direction of the abutting rod 31. The limiting groove 311 is slidably sleeved on the periphery of the limiting pin 134, so that the axis of the limiting pin 134 intersects with the axis of the spread lever, and limits the stroke and the limit position of the abutting lever 31. In this embodiment, the limit pin 134 is a round rod.

The implementation principle of the embodiment 1 is as follows: the clamp can be used in a matched mode, a workpiece is located between the two clamps, and the abutting rod 31 in any clamp faces to the other clamp. When the work piece is clamped, the outlet 22 of the capsule body 2 is closed to be communicated with the electromagnetic valve, fluid with certain pressure is injected into the capsule body 2 through the inlet 21 of the capsule body 2, the capsule body 2 expands and pushes the thimble 3 to axially extend out of the box body 1 along the guide hole 121 until the ball head is abutted to the surface of the work piece to be extruded, extrusion forces in opposite directions are applied to the work piece by the two fixtures on two sides of the work piece, and then the two fixtures complete clamping of the work piece.

Alternatively, the clamp can be used with a base plate, with the abutment rod 31 facing the base plate and the workpiece between the base plate and the clamp. When a workpiece is clamped, fluid with certain pressure is injected into the capsule body 2 through the inlet 21 of the capsule body 2, the capsule body 2 expands and pushes the thimble 3 to extend out of the box body 1, and the thimble 3 abuts against the workpiece and pushes the workpiece to abut against the bottom plate; the clamp cooperates with the bottom plate to complete clamping of the workpiece.

Example 2

Referring to fig. 4 and 5, the present embodiment is different from embodiment 1 in that the case body 1 includes a body 11 and a case cover 13.

A limiting surface 135 is arranged on the periphery of the limiting pin 134, the limiting surface 135 is parallel to the axis of the limiting pin 134, and the limiting surface 135 is parallel to the axis of the thimble 3; meanwhile, the limiting surface 135 is slidably attached to the sidewall of the limiting groove 311 to limit the swing of the thimble 3.

Example 3

Referring to fig. 6 and 7, the present embodiment is different from embodiment 1 in that the capsule body 2 includes a main capsule 23 and an air column 24 which are communicated with each other. The inlet 21 and the outlet 22 are communicated with a main bag 23, and an air column 24 is connected to one side of the main bag 23 facing the partition plate 12. And a plurality of air columns 24 are provided at intervals and correspond to each guide hole 121 one by one. Meanwhile, one end of the air column 24 far away from the capsule body 2 can be fixedly connected with the end face of the guide rod 32 through bonding and other modes.

The implementation principle of the embodiment 3 is as follows: when the clamp is in operation, the displacement of each thimble 3 may be different, and at this time, the displacement of each thimble 3 is compensated by the deformation of the air column 24. In the process, the periphery of the capsule body 2 and the end face of the thimble 3 do not move relatively, so that the abrasion of the capsule body 2 is reduced, and the service life is prolonged.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A universal clamp is characterized in that: comprises a box body (1), a bag body (2) and a thimble (3);

the box body (1) is hollow;

the bag body (2) is flexible and is arranged in the box body (1), and the bag body (2) is provided with an inlet (21) and an outlet (22) for fluid to enter and exit the bag body (2);

a plurality of thimbles (3) are arranged side by side; thimble (3) are along self axial sliding connection box body (1), just the one end of thimble (3) stretches into the surface of box body (1) and butt utricule (2), the other end of thimble (3) stretches out the surface that box body (1) is used for the butt work piece.

2. The universal fixture as claimed in claim 1, wherein: the box body (1) comprises a main body (11) and a box cover (13);

the box cover (13) is provided with a through groove (132) for the thimble (3) to penetrate through, and the side wall of the through groove (132) is parallel to the axis of the thimble (3);

the box cover (13) is also provided with a plurality of limiting pins (134), and the limiting pins (134) are arranged side by side and are all positioned in the through grooves (132); the limiting pin (134) is vertical to the axis of the thimble (3);

the thimble (3) is equipped with spacing groove (311), axial extension along thimble (3) is followed in spacing groove (311), just spacing groove (311) slip cup joint in the periphery of spacer pin (134).

3. The universal fixture as claimed in claim 2, wherein: a limiting surface (135) is arranged on the periphery of the limiting pin (134), the limiting surface (135) is parallel to the axis of the thimble (3), and the limiting surface (135) is parallel to the axis of the limiting pin (134);

the limiting surface (135) is in sliding connection with the side wall of the limiting groove (311).

4. Universal clamp according to claim 2 or 3, characterized in that: the peripheries of the adjacent thimbles (3) are mutually attached in a sliding manner;

the limiting groove (311) penetrates through the thimble (3) along the axial direction of the limiting pin (134); and one limiting pin (134) penetrates through the limiting grooves (311) of the ejector pins (3).

5. The universal fixture as claimed in claim 4, wherein: the axis of the limiting pin (134) is intersected with the axis of the thimble (3).

6. The universal fixture as claimed in claim 2, wherein: the box cover (13) is provided with a limiting hole (133), and the limiting pin (134) penetrates through the limiting hole (133);

the main body (11) is sleeved on the periphery of the box cover (13), and the inner periphery of the main body (11) covers the limiting hole (133).

7. The universal fixture as claimed in claim 2, wherein: the thimble (3) comprises a butting rod (31) and a guide rod (32) which are coaxially arranged; the outer diameter of the guide rod (32) is smaller than that of the abutting rod (31); the peripheries of the adjacent abutting rods (31) are mutually attached in a sliding manner;

the box body (1) also comprises a clapboard (12); the partition plate (12) is arranged in the main body (11), and the partition plate (12) is vertical to the axis of the thimble (3); the capsule body (2) is positioned on one side of the clapboard (12) departing from the box cover (13);

baffle (12) are equipped with guiding hole (121), guide bar (32) slip inlays to establish in guiding hole (121), just one end that lid (13) were kept away from in guide bar (32) runs through baffle (12) and the surface of butt utricule (2).

8. The universal fixture as claimed in claim 1, wherein: one end of the box body (1) extending out of the thimble (3) is a ball head.

9. The universal fixture as claimed in claim 1, wherein: a one-way valve or an electromagnetic valve is arranged at the inlet (21) of the capsule body (2), and fluid flows into the capsule body (2) in a one-way mode through the inlet (21); an electromagnetic valve is arranged at the outlet (22) of the capsule body (2).