Annular workpiece clamping jig

Abstract

The annular workpiece clamping jig comprises an arc-shaped base, a profiling block, a clamping jaw and a clamping jaw driving mechanism, the profiling block is fixed to the upper surface of the arc-shaped base, a transverse cavity and a longitudinal cavity are formed in the arc-shaped base, a center cavity used for containing an annular workpiece is formed in the profiling block, and the clamping jaw driving mechanism is arranged in the center cavity. The clamping jaw driving mechanism comprises a top block, a connecting rod and two clamping jaw driving air cylinders, a circle of clamping jaw arms are arranged on the upper portion of the clamping jaw, and a longitudinal gap is formed between every two adjacent clamping jaw arms; the interior of the upper part of the clamping jaw is a circular ring with a wide upper part and a narrow lower part; the upper part of the top block is a circular truncated cone with a wide upper part and a narrow lower part; the clamping jaw driving air cylinder drives the ejector block to descend to drive the circle of clamping jaw arms to expand outwards to tightly support and fix the annular workpiece from the interior of the annular workpiece. By means of the structural design of the clamping jaws, the clamping jaw driving mechanism and the like, the annular workpiece clamping device is simple in structure and ingenious in design, annular workpieces can be rapidly and automatically clamped and positioned, and interference cannot be caused to other mechanisms used in cooperation.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical devices, in particular to an annular workpiece clamping fixture. Background Art

[0002] A certain type of annular workpiece requires vertical cylindrical pins and inclined slant pins to be pressed downward from its upper surface, which inevitably involves the clamping and positioning of the annular workpiece. There was no special clamping fixture before. Therefore, we considered setting up a special clamping fixture that can achieve the positioning of the annular workpiece without hindering the pressing of cylindrical pins and inclined pins into the annular workpiece from above. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a clamping fixture for annular workpieces. Through the structural design of the clamping jaws and the clamping jaw driving mechanism, etc., the structure is simplified and the design is ingenious, so that the annular workpiece can be clamped and positioned quickly and automatically without interfering with other cooperating mechanisms.

[0004] The cam is fixed to the upper surface of the cam, and the cam is fixed on the upper surface of the cam, and the cam is provided with a horizontal cavity and a longitudinal cavity inside the cam, and the cam is provided with a central cavity for placing the annular workpiece. The cam driving mechanism comprises a top block, a connecting rod and two clamping cylinders, the power output ends of the two clamping cylinders are respectively fixedly connected to one end of the connecting rod, the lower end of the top block is fixed to the center position of the connecting rod, the clamping jaw is installed in the longitudinal cavity, and the upper end can be inserted into the central cavity, the top block is located at the center of the clamping jaw, the upper part of the clamping jaw is a circle of clamping jaw arms, and there is a longitudinal gap between adjacent clamping jaw arms; the inner part of the upper part of the clamping jaw is a circular ring that is wide at the top and narrow at the bottom, and the upper part of the top block is a truncated cone that is wide at the top and narrow at the bottom;

[0005] The clamping jaws drive the cylinder to drive the top block to descend and drive a circle of clamping jaw arms to expand outwards to tighten and fix the annular workpiece from the inside.

[0006] Furthermore, the clamping fixture also includes a positioning block, the lower surface of the positioning block is provided with four positioning columns, the upper surface of the profiling block is provided with two positioning holes, the annular workpiece has a straight hole for pressing in a cylindrical pin and an oblique hole for pressing in an oblique pin, and the positioning columns can be inserted into the positioning holes and the straight holes.

[0007] Furthermore, the connecting rod is located in the transverse cavity, and the ends of the push rods of the two clamping jaw driving cylinders are respectively fixedly connected to the ends of the connecting rod.

[0008] Furthermore, the upper portion of the annular workpiece is provided with a circle of hanging platforms extending outwards, and is hung at the upper opening of the central cavity through the hanging platforms.

[0009] Furthermore, the back of the arc seat is fixed on a base plate, the lower surface of the arc seat is an arc surface, a support seat is provided below the arc seat, a support pad is provided on the upper part of the support seat, and the upper surface of the support pad is also an arc surface.

[0010] The beneficial effects of the utility model are:

[0011] The utility model includes an arc-shaped seat, a profiling block, a clamping jaw and a clamping jaw driving mechanism. The clamping jaw driving mechanism includes a top block, a connecting rod and two clamping jaw driving cylinders. The clamping jaw driving cylinder drives the top block to descend and drives a circle of clamping jaw arms to expand outward to tighten and fix the annular workpiece from the inside. That is, the utility model has a streamlined structure and an ingenious design through the structural design of the clamping jaw and the clamping jaw driving mechanism, and can realize rapid and automatic clamping and positioning of the annular workpiece without interfering with other cooperating mechanisms.

[0012] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the structural diagrams of the utility model (before placing the annular workpiece);

[0014] Figure 2 This is one of the cross-sectional views of the present invention (before placing the annular workpiece)

[0015] Figure 3 This is the second structural diagram of the utility model (after placing the annular workpiece);

[0016] Figure 4 This is the second cross-sectional view of the present utility model;

[0017] Figure 5 It is a structural schematic diagram of the clamping jaw of the present utility model;

[0018] Figure 6 It is a structural schematic diagram of the arc seat of the utility model;

[0019] The parts in the accompanying drawings are marked as follows:

[0020] Clamping fixture 1, arc seat 11, transverse cavity 111, longitudinal cavity 112, profiling block 12, central cavity 121, positioning hole 122, clamping jaw 13, clamping jaw arm 131, longitudinal gap 132, top block 141, connecting rod 142, clamping jaw drive cylinder 143, positioning block 15, positioning column 151, bottom plate 16, support seat 17, support pad 171;

[0021] Annular workpiece 10, straight hole 101, oblique hole 102, cylindrical pin 20, oblique pin 30. DETAILED DESCRIPTION

[0022] The following describes the specific embodiments of the present invention through specific examples. Those skilled in the art can easily understand the advantages and effects of the present invention based on the content disclosed in this specification. The present invention can also be implemented in other different ways, that is, various modifications and changes can be made without departing from the scope of the present invention.

[0023] The position descriptions such as up, down, left, and right in this embodiment are based on the orientations in the drawings and have no special meanings and are not intended to limit the scope of protection of the present utility model.

[0024] Embodiment: A ring-shaped workpiece clamping fixture, such as Figures 1 to 6 As shown, the clamping fixture 1 includes an arc-shaped seat 11, a profiling block 12, a clamping jaw 13 and a clamping jaw driving mechanism, the profiling block is fixed to the upper surface of the arc-shaped seat, the interior of the arc-shaped seat is provided with a transverse cavity 111 and a longitudinal cavity 112, the interior of the profiling block is provided with a central cavity 121 for placing the annular workpiece 10, the clamping jaw driving mechanism includes a top block 141, a connecting rod 142 and two clamping jaw driving cylinders 143, the power output ends of the two clamping jaw driving cylinders are respectively fixedly connected to one end of the connecting rod, the lower end of the top block is fixed to the center position of the connecting rod, the clamping jaw is installed in the longitudinal cavity, and the upper end can be inserted into the central cavity, the top block is located at the center of the clamping jaw, the upper part of the clamping jaw is a circle of clamping jaw arms 131, and there is a longitudinal gap 132 between adjacent clamping jaw arms; the interior of the upper part of the clamping jaw is a circular ring that is wide at the top and narrow at the bottom, and the upper part of the top block is a frustum that is wide at the top and narrow at the bottom;

[0025] The clamping jaws drive the cylinder to drive the top block to descend and drive a circle of clamping jaw arms to expand outwards to tighten and fix the annular workpiece from the inside.

[0026] In this embodiment, Figure 1 As shown, Figure 1The bottom surface of the middle positioning block is provided with four positioning columns, only one of which is shown in the figure; the clamping fixture also includes a positioning block 15, the lower surface of which is provided with four positioning columns 151, and the upper surface of the profiling block is provided with two positioning holes 122. The annular workpiece has a straight hole 101 for pressing in the cylindrical pin 20 and an inclined hole 102 for pressing in the inclined pin 30, and the positioning columns can be inserted into the positioning holes and the straight holes.

[0027] In this embodiment, the connecting rod is located in the transverse cavity, and the ends of the push rods of the two clamping jaw driving cylinders are respectively fixedly connected to the ends of the connecting rod.

[0028] In this embodiment, the upper portion of the annular workpiece is provided with a circle of hanging platforms extending outwards, and is hung at the upper opening of the central cavity through the hanging platforms.

[0029] In this embodiment, the back of the curved seat is fixed to a base plate 16. The lower surface of the curved seat is a circular arc. A support seat 17 is located below the curved seat. A support pad 171 is located above the support seat. The upper surface of the support pad is also a circular arc. In this embodiment, the support seat is fixed to the machine platform, which is not shown in the figure. This part of the structure is used in conjunction with other equipment.

[0030] The working principle and working process of this utility model:

[0031] The annular workpiece is placed in the central cavity of the profiling block manually or through other automatic loading and unloading mechanisms. At this time, the upper part of the clamping jaws is located inside the annular workpiece. Then the positioning block is used to make the positioning column just inserted into the positioning hole and the straight hole, indicating that the annular workpiece is placed in place. If it cannot be inserted at the same time, the annular workpiece is rotated until the positioning column is just inserted into the positioning hole and the straight hole; then the two clamping jaws drive the cylinder to drive the connecting rod to descend and drive the top block to descend. Through the cooperation of the inclined outer peripheral surface of the top block and the inclined inner wall surface of the clamping jaws, the clamping jaw arms are expanded outward, and finally the annular workpiece will be tightened and the column will be fixed, so that the positioning of the annular workpiece can be achieved.

[0032] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made by using the contents of the description and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A ring-shaped workpiece clamping fixture, characterized by: The clamping fixture (1) includes an arc seat (11), a profiling block (12), a clamping jaw (13) and a clamping jaw driving mechanism, wherein the profiling block is fixed to the upper surface of the arc seat, a transverse cavity (111) and a longitudinal cavity (112) are provided inside the arc seat, a central cavity (121) for placing an annular workpiece (10) is provided inside the profiling block, and the clamping jaw driving mechanism includes a top block (141), a connecting rod (142) and two clamping jaw driving cylinders (143), and the two The power output end of the clamp driving cylinder is fixedly connected to one end of the connecting rod respectively, the lower end of the top block is fixed to the center position of the connecting rod, the clamp is installed in the longitudinal cavity, and the upper end can be inserted into the central cavity, the top block is located at the center of the clamp, the upper part of the clamp is a circle of clamp arms (131), and there is a longitudinal gap (132) between adjacent clamp arms; the interior of the upper part of the clamp is a circular ring that is wide at the top and narrow at the bottom, and the upper part of the top block is a truncated cone that is wide at the top and narrow at the bottom; The clamping jaws drive the cylinder to drive the top block to descend and drive a circle of clamping jaw arms to expand outwards to tighten and fix the annular workpiece from the inside.

2. The annular workpiece clamping fixture according to claim 1, characterized in that: The clamping fixture also includes a positioning block (15), the lower surface of the positioning block is provided with four positioning columns (151), the upper surface of the profiling block is provided with two positioning holes (122), the annular workpiece has a straight hole (101) for pressing in a cylindrical pin (20) and an inclined hole (102) for pressing in an inclined pin (30), and the positioning columns can be inserted into the positioning holes and the straight holes.

3. The annular workpiece clamping fixture according to claim 1, characterized in that: The connecting rod is located in the transverse cavity, and the ends of the push rods of the two clamping jaw driving cylinders are respectively fixedly connected to the ends of the connecting rod.

4. The annular workpiece clamping fixture according to claim 1, characterized in that: The upper part of the annular workpiece is provided with a circle of hanging platforms extending outwards, and is hung at the upper opening of the central cavity through the hanging platforms.

5. The annular workpiece clamping fixture according to claim 1, characterized in that: The back of the arc seat is fixed on a bottom plate (16), the lower surface of the arc seat is an arc surface, a support seat (17) is provided below the arc seat, and a support pad (171) is provided on the upper part of the support seat, and the upper surface of the support pad is also an arc surface.

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