Self-centering fixture for rotating body

Abstract

The utility model discloses a self-centering fixture for a rotating body, which belongs to the technical field of fixtures, and includes a fixture base plate, on which a plurality of positioning bases are fixedly connected, an upper fixture is arranged directly above the positioning base, and the left sides of the positioning base and the upper fixture are both fixedly connected to a side link plate by bolts; the positioning base and the upper fixture are provided with locking grooves on the opposite sides for fitting parts to be inserted and fixed; the contact surfaces of the positioning base and the upper fixture are provided with process opening grooves, which are arranged on the left side of the locking grooves, and the contact surfaces of the positioning base and the upper fixture are both provided with slots, which are connected to the process opening grooves. In the above manner, the utility model drives the upper fixture and the positioning base to clamp the parts by moving the bolts downward, so that the parts are fixed; after the parts are fixed, the parts are processed by drilling holes, and the inner holes are processed and milled on the inner walls of the front and rear ends of the parts.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a self-centering clamp for a rotating body. Background Art

[0002] Rotating parts are mechanical parts with different shapes and sizes. During processing, they need to be clamped by a fixture before processing.

[0003] Chinese patent CN217890209U discloses a fixture for processing a rotating body, including a fixture body for being installed on a turntable, and also including a base, which is fixedly connected to the top of the fixture body; a fixed clamping block, which is fixedly connected to one side of the top of the base; a movable clamping block, which is placed on the other side of the top of the base, and the inner sides of the fixed clamping block and the movable clamping block are both provided with clamping grooves for clamping a workpiece, and both ends of the fixed clamping block and the movable clamping block are connected by fasteners;

[0004] However, the above-mentioned fixture for processing a rotating body cannot be applied to rotating body parts of other special shapes, such as cylindrical rotating body parts with front and rear openings;

[0005] Based on this, the utility model designs a rotating body self-centering fixture to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a self-centering fixture for a rotating body.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The self-centering fixture for a rotating body comprises a fixture bottom plate, a plurality of positioning bases are fixedly connected to the fixture bottom plate, an upper fixture is arranged directly above the positioning base, and the left side of the positioning base and the upper fixture are fixedly connected to the side link plate by bolts; the positioning base and the upper fixture are provided with locking grooves for inserting and fixing matching parts on the opposite sides; the contact surface of the positioning base and the upper fixture is provided with a process opening groove, the process opening groove is arranged on the left side of the locking groove, and the contact surface of the positioning base and the upper fixture is provided with a groove, and the groove is connected to the process opening groove;

[0009] The fixture bottom plate is connected with a plurality of locking components for locking parts.

[0010] Furthermore, the locking groove on the upper clamp is in the shape of a semicircular groove, and a groove protruding from a matching part is provided at the upper left corner of the semicircular groove.

[0011] Furthermore, the total overlapping height of the slots formed on the contact surfaces of the positioning base and the upper fixture is 0.1-1 mm.

[0012] Furthermore, a groove communicating with the slot is formed on the right side of the side link plate.

[0013] Furthermore, both left and right ends of the clamp bottom plate are provided with a plurality of clamp positioning pin connection holes for connecting with other devices.

[0014] Furthermore, the locking assembly includes a cylinder, a pull rod, a fixing hole and a bolt; the lower end of the clamp base plate is fixedly connected to the cylinder, the output end of the cylinder is fixedly connected to the pull rod, the pull rod is arranged in a groove at the right end of the inner part of the positioning base, and the pull rod is slidably connected to the positioning base, a fixing hole is opened at the right end of the upper clamp, the fixing hole is connected to the groove opened in the positioning base, a bolt is arranged in the fixing hole, and the lower end of the bolt is fixedly connected to the upper end of the pull rod.

[0015] Furthermore, a rear end of the upper clamp is fixedly connected with a side positioning block.

[0016] Furthermore, the left end of the side positioning block is fixedly connected with a gas detection joint for detecting whether it is clamped.

[0017] Furthermore, the upper fixture is provided with two processing holes.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. When it is necessary to clamp the part, since the contact surface of the positioning base and the upper fixture is grooved, the part can be inserted between the positioning base and the upper fixture from the locking groove on the positioning base and the upper fixture. The part is a cylindrical workpiece with front and rear openings, and there is a protrusion at the upper left corner of the part. The insertion position of the part is positioned by the side positioning block, and the part is limited by the locking groove so that the insertion position of the part is accurate and will not rotate. Then the output end of the cylinder drives the pull rod to move downward, the pull rod drives the bolt to move downward, and the bolt moves downward to drive the upper fixture and the positioning base to clamp the part, so that the part is fixed; after the part is fixed, the part is processed and drilled through the processing hole, and the inner hole is processed and milled on the inner wall of the front and rear ends of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a three-dimensional self-centering fixture for a rotating body Figure 1 ;

[0022] Figure 2 It is a front view of the self-centering fixture for rotating body of the utility model;

[0023] Figure 3 The local three-dimensional Figure 1 ;

[0024] Figure 4 The local three-dimensional Figure 1 ;

[0025] Figure 5 It is the front cross-sectional view of the fixture;

[0026] Figure 6 It is a schematic diagram of the structure of the parts.

[0027] The numbers in the figure represent:

[0028] 1. Parts; 2. Positioning base; 3. Side link plate; 4. Fixture bottom plate; 5. Process opening groove; 6. Cylinder; 7. Pull rod; 8. Fixture positioning pin link hole; 9. Side positioning block; 10. Gas inspection joint; 11. Processing hole; 12. Fixing hole; 13. Bolt; 14. Processing drill hole; 15. Milling inner hole; 16. Upper fixture. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0031] Embodiment 1

[0032] In some embodiments, please refer to the attached instructions. Figure 1-6, a self-centering fixture for a rotating body comprises a fixture base plate 4, a plurality of positioning bases 2 are fixedly connected to the fixture base plate 4, an upper fixture 16 is arranged directly above the positioning base 2, and the left sides of the positioning base 2 and the upper fixture 16 are fixedly connected to the side link plate 3 by bolts; the positioning base 2 and the upper fixture 16 are provided with a locking groove for inserting and fixing the matching part 1 on the opposite side; the contact surface of the positioning base 2 and the upper fixture 16 is provided with a process opening groove 5, and the process opening groove 5 is arranged on the left side of the locking groove, and the contact surface of the positioning base 2 and the upper fixture 16 is provided with a groove, and the groove is connected to the process opening groove 5, which is used to eliminate the stress generated by the device when clamping the part 1;

[0033] The locking groove on the upper fixture 16 is in the shape of a semicircular groove, and a groove that matches the protrusion on the part 1 is provided at the upper left corner of the semicircular groove, which is used to limit the part 1 and prevent the part 1 from rotating;

[0034] The total height of the slots formed on the contact surfaces of the positioning base 2 and the upper fixture 16 is 0.1-1 mm;

[0035] A groove connected to the slot is provided on the right side of the side link plate 3 to eliminate the stress generated by the side link plate 3 when the upper clamp 16 is pressed downward;

[0036] The left and right ends of the clamp bottom plate 4 are provided with a plurality of clamp positioning pin connection holes 8 for connecting with other devices;

[0037] The fixture bottom plate 4 is connected with a plurality of locking components for locking the part 1; the locking components include an oil cylinder 6, a pull rod 7, a fixing hole 12 and a bolt 13; the lower end of the fixture bottom plate 4 is fixedly connected to the oil cylinder 6, and the output end of the oil cylinder 6 is fixedly connected to the pull rod 7; a groove is provided at the inner right end of the positioning base 2, the pull rod 7 is arranged in the groove at the inner right end of the positioning base 2, and the pull rod 7 is slidably connected to the positioning base 2, a fixing hole 12 is provided at the right end of the upper fixture 16, the fixing hole 12 is communicated with the groove provided in the positioning base 2, a bolt 13 is arranged in the fixing hole 12, and the lower end of the bolt 13 is fixedly connected to the upper end of the pull rod 7;

[0038] The rear end of the upper fixture 16 is fixedly connected with a side positioning block 9, and the side positioning block 9 is used to position the rear end of the part 1 when the part 1 is inserted between the positioning base 2 and the upper fixture 16;

[0039] The left end of the side positioning block 9 is fixedly connected with a gas detection joint 10 for detecting whether it is clamped;

[0040] The upper fixture 16 is provided with two processing holes 11 for processing drilling holes 14 of the part 1;

[0041] When it is necessary to clamp the part 1, since the contact surfaces of the positioning base 2 and the upper clamp 16 are grooved, the part 1 can be inserted from the locking grooves on the positioning base 2 and the upper clamp 16 between the positioning base 2 and the upper clamp 16. The part 1 is a cylindrical workpiece with front and rear openings, and there is a protrusion at the upper left corner of the part 1. The insertion position of the part 1 is positioned by the side positioning block 9, and the center can be reliably aligned. The locking groove is used to limit the part 1 so that the insertion position of the part 1 is accurate and will not rotate. Then the output end of the oil cylinder 6 drives the pull rod 7 to move downward, and the pull rod 7 drives the bolt 13 to move downward. The bolt 13 moves downward to drive the upper clamp 16 and the positioning base 2 to clamp the part 1, so that the part 1 is fixed; after the part 1 is fixed, the processing drilling hole 14 of the part 1 is processed through the processing hole 11, and the milling inner hole 15 is processed on the inner wall of the front and rear ends of the part 1; fast clamping can improve processing efficiency, increase production capacity, reduce single-piece working hours, and compared with the lathe positioning, it is more stable, the outer contour is not easy to be crushed, and the force is evenly distributed.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-centering fixture for a rotating body, comprising a fixture base plate (4), characterized in that: A plurality of positioning bases (2) are fixedly connected to the fixture bottom plate (4); an upper fixture (16) is arranged directly above the positioning base (2); the left sides of the positioning base (2) and the upper fixture (16) are both fixedly connected with a side link plate (3) by bolts; the positioning base (2) and the upper fixture (16) are provided with locking grooves on the opposite sides thereof for inserting and fixing the matching parts (1); the contact surfaces of the positioning base (2) and the upper fixture (16) are provided with process opening grooves (5), the process opening grooves (5) are arranged on the left side of the locking grooves, the contact surfaces of the positioning base (2) and the upper fixture (16) are both provided with slots, and the slots are connected to the process opening grooves (5); A plurality of locking components for locking the part (1) are connected to the clamp base plate (4).

2. The self-centering fixture for rotating body according to claim 1, characterized in that: The locking groove formed on the upper clamp (16) is in the shape of a semicircular groove, and a groove protruding from the mating part (1) is formed at the upper left corner of the semicircular groove.

3. The self-centering fixture for rotating body according to claim 2, characterized in that: The total overlapping height of the slots formed on the contact surfaces of the positioning base (2) and the upper fixture (16) is 0.1-1 mm.

4. The self-centering fixture for rotating body according to claim 3, characterized in that: The right side of the side link plate (3) is provided with a groove which is connected with the slot.

5. The self-centering fixture for rotating body according to claim 4, characterized in that: The left and right ends of the clamp bottom plate (4) are both provided with a plurality of clamp positioning pin connection holes (8) for connecting with other devices.

6. The self-centering fixture for rotating body according to claim 5, characterized in that: The locking assembly comprises an oil cylinder (6), a pull rod (7), a fixing hole (12) and a bolt (13); the lower end of the clamp base plate (4) is fixedly connected to the oil cylinder (6), the output end of the oil cylinder (6) is fixedly connected to the pull rod (7), the pull rod (7) is arranged in a groove at the right end of the interior of the positioning base (2), and the pull rod (7) is slidably connected to the positioning base (2), the right end of the upper clamp (16) is provided with a fixing hole (12), the fixing hole (12) is connected to the groove provided in the positioning base (2), a bolt (13) is arranged in the fixing hole (12), and the lower end of the bolt (13) is fixedly connected to the upper end of the pull rod (7).

7. The self-centering fixture for rotating body according to claim 6, characterized in that: The rear end of the upper clamp (16) is fixedly connected to a side positioning block (9).

8. The self-centering fixture for rotating body according to claim 7, characterized in that: The left end of the side positioning block (9) is fixedly connected with a gas detection joint (10) for detecting whether it is clamped.

9. The self-centering fixture for rotating body according to claim 8, characterized in that: The upper clamp (16) is provided with two processing holes (11).

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