Centering spot facing boring clamp

Abstract

The utility model relates to the technical field of centering fixtures, in particular to a centering spot facing boring fixture which comprises a base, a positioning ring is fixedly mounted on the base, a plurality of supporting blocks are fixedly mounted on the positioning ring, rotating blocks are rotatably mounted at the upper ends of the supporting blocks through torsion springs, a support is fixedly mounted on the rotating blocks, and a plurality of boring holes are formed in the support. A T-shaped plate is arranged above the base, a strip-shaped hole is formed in the surface of the T-shaped plate, a vertical rod is vertically inserted into the strip-shaped hole, a thread is arranged at the upper end of the vertical rod, a positioning bolt is sleeved with the thread, the vertical rod is sleeved with a telescopic spring, a base plate is fixedly installed at the upper end of the telescopic spring, and a moving groove is formed in the side face of the T-shaped plate. And pressing rods are symmetrically mounted in the moving groove in a sliding manner. The support, the positioning bolt, the telescopic spring, the base plate, the T-shaped plate and the pressing plate are matched with one another, a conical or frustum-shaped workpiece can be stably clamped, and the stability of the clamp is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centering fixtures, in particular to a centering countersinking and boring fixture. Background Art

[0002] A fixture is a device used to fix the object to be processed during the mechanical manufacturing process so that it occupies the correct position for construction or inspection. A fixture is needed when the workpiece is countersunk and bored to position the workpiece. Then a boring tool is used to bore one end of the workpiece.

[0003] A Chinese patent with publication number CN220637014U discloses a centering boring fixture, which makes the workpiece more stable during boring processing. Because the dovetail slider is slidably installed inside the dovetail groove, it is convenient for the staff to properly adjust the center position of the bored workpiece. The setting of two fixed rods makes the dovetail slider more stable after adjustment.

[0004] In the above patent document, in the process of clamping the workpiece, only some workpieces with cylindrical clamping surfaces can be processed. When the workpiece to be processed is conical or frustum-shaped, the clamping plate will cause the workpiece to move up and down when clamping it. The fixture cannot effectively clamp and fix the workpiece, and the stability is poor. Utility Model Content

[0005] The purpose of the utility model is to solve the following shortcomings in the prior art: when the workpiece to be processed is conical or frustum-shaped, the clamping plate will cause the workpiece to move up and down when clamping it, and the fixture will not be able to effectively clamp and fix the workpiece, and the stability is poor. A centering countersinking and boring fixture is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A centering countersinking and boring fixture comprises a base, a positioning ring is fixedly mounted on the base, a plurality of support blocks are fixedly mounted on the positioning ring, the plurality of support blocks are arranged in a circumference on the positioning ring, a rotating groove is provided on the support block, a rotating block is rotatably mounted in the rotating groove via a torsion spring, and a U-shaped bracket is fixedly mounted on the rotating block;

[0008] A T-shaped plate is provided above the base, a strip hole is provided on the surface of the T-shaped plate, a vertical rod is vertically inserted into the strip hole, the vertical rod is vertically fixedly installed on the base, a thread is provided on the upper end of the vertical rod, a positioning bolt is threadedly sleeved on the vertical rod, a telescopic spring is sleeved on the vertical rod, a pad is fixedly installed on the upper end of the telescopic spring, and the upper surface of the pad is in contact with the lower surface of the T-shaped plate;

[0009] A movable groove is provided on the side of the T-shaped plate, and a pressure rod is symmetrically slidably installed in the movable groove through an adjusting component.

[0010] Preferably, the adjustment assembly comprises a threaded rod rotatably mounted in the movable groove with the threads on the left and right ends in opposite directions and two movable blocks symmetrically threadedly sleeved on the threaded rod, and the two pressure rods are fixedly connected to the two movable blocks respectively.

[0011] Preferably, one end of the threaded rod passes through the movable groove, and an adjustment block is fixedly mounted on one end of the threaded rod.

[0012] Preferably, a U-shaped fixed block is fixedly installed on the base, a sliding groove is provided on the upper surface of the fixed block, a sliding block is horizontally slidably installed in the sliding groove, a support rod is vertically fixedly installed on the sliding block, a circular hole is provided on the surface of the T-shaped plate, and the support rod is slidably inserted into the circular hole.

[0013] Preferably, a stopper is fixedly mounted on the upper end of the support rod, and the diameter of the stopper is larger than the diameter of the support rod.

[0014] Preferably, anti-skid pads are fixedly installed on the lower surfaces of the two pressure rods, and the anti-skid pads are made of rubber.

[0015] In the utility model, the beneficial effects are:

[0016] When processing conical or frustum-shaped workpieces, the workpieces are placed on multiple brackets, and then the T-shaped plate is driven to move vertically downward through the cooperation of positioning bolts, telescopic springs and pads. The vertical movement of the workpiece is limited by two pressure rods, so that the workpiece can be clamped and fixed stably, effectively improving the stability of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a centering countersinking and boring fixture proposed by the utility model;

[0018] Figure 2 for Figure 1 A magnified view of the structure at center;

[0019] Figure 3 for Figure 1 A magnified view of the structure at B in the middle;

[0020] Figure 4 for Figure 1 Enlarged view of the structure at point C in the middle.

[0021] In the figure: 1 base, 2 positioning ring, 3 support block, 4 rotating block, 5 bracket, 6 T-shaped plate, 7 vertical rod, 8 positioning bolt, 9 telescopic spring, 10 pad, 11 pressure rod, 12 threaded rod, 13 moving block, 14 adjusting block, 15 fixed block, 16 slider, 17 support rod, 18 stopper. DETAILED DESCRIPTION

[0022] 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.

[0023] Reference Figure 1-Figure 4 A centering countersinking and boring fixture comprises a base 1, a positioning ring 2 is fixedly mounted on the base 1, a plurality of support blocks 3 are fixedly mounted on the positioning ring 2, the plurality of support blocks 3 are arranged in a circumference on the positioning ring 2, a rotating groove is opened on the support block 3, a rotating block 4 is rotatably mounted in the rotating groove through a torsion spring, and a U-shaped bracket 5 is fixedly mounted on the rotating block 4;

[0024] A T-shaped plate 6 is provided above the base 1, and a strip hole is provided on the surface of the T-shaped plate 6, and a vertical rod 7 is vertically inserted into the strip hole. The vertical rod 7 is vertically fixedly installed on the base 1, and a thread is provided on the upper end of the vertical rod 7. A positioning bolt 8 is threadedly sleeved on the vertical rod 7, and a telescopic spring 9 is sleeved on the vertical rod 7. A pad 10 is fixedly installed on the upper end of the telescopic spring 9, and the upper surface of the pad 10 contacts the lower surface of the T-shaped plate 6;

[0025] A movable groove is provided on the side of the T-shaped plate 6, and a pressing rod 11 is symmetrically slidably installed in the movable groove through an adjusting assembly.

[0026] Under the action of the elastic force of the telescopic spring 9, the T-shaped plate 6 contacts with the positioning bolt 8. When processing the workpiece, the workpiece is first placed between the multiple support blocks 3, and the side of the workpiece contacts with the multiple brackets 5. The two ends of the bracket 5 can be rotated by the rotating block 4 to ensure that the two ends of the bracket 5 are in contact with the side of the workpiece, thereby achieving a better supporting effect. Then the T-shaped plate 6 is moved to drive the T-shaped plate 6 to move toward the workpiece, and the vertical rod 7 slides horizontally in the strip hole. Then the positioning bolt 8 is rotated by a wrench to drive the positioning bolt 8 to move vertically downward, thereby driving the T-shaped plate 6 to move vertically downward. The telescopic spring 9 is compressed, and when the T-shaped plate 6 moves vertically downward, it drives the two pressure rods 11 to contact the upper end of the workpiece, limiting the movement of the workpiece in the vertical direction, and the bracket 5 applies an oblique upward supporting force to the inclined surface of the workpiece, thereby stably clamping the workpiece on the fixture, effectively improving the stability of the fixture.

[0027] The adjustment assembly includes a threaded rod 12 with opposite thread directions at the left and right ends rotatably mounted in the moving groove and two moving blocks 13 symmetrically threadedly sleeved on the threaded rod 12. The two pressure rods 11 are fixedly connected to the two moving blocks 13 respectively. One end of the threaded rod 12 passes through the moving groove, and an adjustment block 14 is fixedly mounted on one end of the threaded rod 12.

[0028] When dealing with workpieces of different diameters, the threaded rod 12 can be driven to rotate by rotating the adjustment block 14, and then the two moving blocks 13 can be driven to move away from or closer to each other by the threaded rod 12, thereby adjusting the distance between the two pressing rods 11 to meet the requirements of pressing down workpieces of different diameters, effectively improving the practicability of the device.

[0029] A U-shaped fixed block 15 is fixedly installed on the base 1, and a slide groove is provided on the upper surface of the fixed block 15. A slider 16 is horizontally slidably installed in the slide groove, and a support rod 17 is vertically fixedly installed on the slider 16. A circular hole is provided on the surface of the T-shaped plate 6, and the support rod 17 is slidably inserted into the circular hole. A stopper 18 is fixedly installed on the upper end of the support rod 17. The diameter of the stopper 18 is larger than the diameter of the support rod 17, which can drive the slider 16 to move horizontally in the slide groove, and the T-shaped plate 6 is driven to move horizontally on the base 1 through the support rod 17 to ensure that the T-shaped plate 6 moves in a straight line direction to avoid rotation. When the T-shaped plate 6 moves vertically up and down, it will move vertically up and down on the support rod 17, and the stopper 18 can prevent the T-shaped plate 6 from detaching from the support rod 17.

[0030] The lower surfaces of the two pressure rods 11 are fixedly installed with anti-skid pads made of rubber. When the pressure rods 11 contact the workpiece, the anti-skid pads can increase the friction between the pressure rods 11 and the workpiece, and at the same time protect the upper surface of the workpiece.

[0031] In the utility model, when processing a workpiece, the workpiece is first placed between multiple support blocks 3, the side of the workpiece contacts multiple brackets 5, and then the T-shaped plate 6 is moved to drive the pressure rod 11 to move above the workpiece, and then the positioning bolt 8 is rotated by a wrench, and the T-shaped plate 6 is driven to move vertically downward through the positioning bolt 8, and then the two pressure rods 11 are driven to contact the upper end of the workpiece to limit the vertical movement of the workpiece, and the bracket 5 applies an oblique upward supporting force to the inclined surface of the workpiece, so that the workpiece is stably clamped and fixed on the fixture, effectively improving the stability of the fixture.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A centering countersinking and boring fixture, comprising a base (1), characterized in that: A positioning ring (2) is fixedly mounted on the base (1), a plurality of support blocks (3) are fixedly mounted on the positioning ring (2), the plurality of support blocks (3) are arranged in a circumference on the positioning ring (2), a rotation groove is provided on the support block (3), a rotation block (4) is rotationally mounted in the rotation groove via a torsion spring, and a U-shaped bracket (5) is fixedly mounted on the rotation block (4); A T-shaped plate (6) is provided above the base (1), a strip hole is provided on the surface of the T-shaped plate (6), a vertical rod (7) is vertically inserted into the strip hole, the vertical rod (7) is vertically fixedly installed on the base (1), a thread is provided on the upper end of the vertical rod (7), a positioning bolt (8) is threadedly sleeved on the vertical rod (7), a telescopic spring (9) is sleeved on the vertical rod (7), a pad (10) is fixedly installed on the upper end of the telescopic spring (9), and the upper surface of the pad (10) is in contact with the lower surface of the T-shaped plate (6); A movable groove is provided on the side of the T-shaped plate (6), and a pressure rod (11) is symmetrically slidably installed in the movable groove through an adjustment component.

2. A centering countersinking and boring fixture according to claim 1, characterized in that: The adjustment assembly comprises a threaded rod (12) rotatably mounted in a movable groove with threads on the left and right ends in opposite directions and two movable blocks (13) symmetrically threadedly sleeved on the threaded rod (12); the two pressure rods (11) are respectively fixedly connected to the two movable blocks (13).

3. A centering countersinking and boring fixture according to claim 2, characterized in that: One end of the threaded rod (12) passes through the movable groove, and an adjustment block (14) is fixedly mounted on one end of the threaded rod (12).

4. A centering countersinking and boring fixture according to claim 1, characterized in that: A U-shaped fixed block (15) is fixedly mounted on the base (1), a sliding groove is provided on the upper surface of the fixed block (15), a sliding block (16) is horizontally slidably mounted in the sliding groove, a support rod (17) is vertically fixedly mounted on the sliding block (16), a circular hole is provided on the surface of the T-shaped plate (6), and the support rod (17) is slidably inserted into the circular hole.

5. A centering countersinking and boring fixture according to claim 4, characterized in that: A stopper (18) is fixedly mounted on the upper end of the support rod (17), and the diameter of the stopper (18) is greater than the diameter of the support rod (17).

6. A centering countersinking and boring fixture according to claim 1, characterized in that: Anti-skid pads are fixedly mounted on the lower surfaces of the two pressure rods (11), and the anti-skid pads are made of rubber.

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