Positioning clamp for valve sleeve machining

Abstract

The utility model relates to the field of machining, in particular to a positioning clamp for valve sleeve machining, which comprises a base, a first fixing part is mounted on one side of the upper portion of the base through a lead screw translation mechanism, a three-jaw disc is rotatably mounted on one side of the first fixing part, clamping blocks are mounted on the outer sides of the three-jaw disc, and a movable block is mounted on one side far away from the clamping blocks. According to the clamping device, the three-jaw disc achieves the moving and locking functions through the lead screw translation mechanism, meanwhile, the adjustable clamping blocks are arranged in the three-jaw disc so that different machining requirements can be met, the movable blocks are arranged in the clamping blocks, the movable blocks can abut against the inner wall of a machined part, the clamping stability is improved, and the machining efficiency is improved. And meanwhile, the movable disc can achieve the free locking function, the positioning efficiency is effectively improved, the device is suitable for workpieces of multiple sizes, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a positioning fixture for valve sleeve processing. Background Art

[0002] The valve sleeve is an important operating part of mechanical equipment, and it is a key component to ensure the stable operation of mechanical equipment.

[0003] At present, in the process of processing valve sleeves, positioning fixtures are often needed to tighten them to cooperate with the processing. Among them, traditional positioning fixtures can already meet the basic clamping and positioning functions. However, in actual use, traditional positioning fixtures are mostly clamped by a single bolt fastening method. The applicability of the fixture is relatively weak. When facing valve sleeves of different sizes, additional adjustments are required, which cannot meet the processing requirements. Therefore, there is an urgent need for a positioning fixture for valve sleeve processing. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a positioning fixture for valve sleeve processing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A positioning fixture for valve sleeve processing, comprising a base, a fixing part 1 is installed on one side of the upper part of the base through a screw translation mechanism, a three-claw disc is rotatably installed on one side of the fixing part 1, a clamping block is installed on the outer side of the three-claw disc, and a movable block is installed on the side away from the clamping block;

[0007] A movable disk is rotatably mounted on one side of the upper portion of the base through a second fixing member, one end of the movable disk is fixedly connected to a second driving rod, a locking sleeve is screwed onto the second driving rod through a threaded wall, and a locking block is arranged on a side away from the locking sleeve.

[0008] In addition, a preferred structure is that a driving rod is provided on one side of the screw translation mechanism, and a screw pair is installed on the other side for limited movement, and a fixing piece is fixedly installed on the upper part of the screw pair.

[0009] In addition, a preferred structure is that the outer side of the three-claw disk is provided with a notch, both sides of the inner wall of the notch are provided with a slide groove, and a clamping block is installed in the slide groove for limiting sliding.

[0010] In addition, a preferred structure is that a screw hole is penetrated through one side of the slide groove, a locking bolt is screwed into the screw hole, and one end of the locking bolt is in compression contact with the outer wall of the clamping block.

[0011] In addition, a preferred structure is that a limiting groove is opened at the bottom of the clamping block, a movable block is installed in the limiting groove for limiting sliding, and a spring is installed at the inner bottom end of the limiting groove, and the other side of the spring is connected to the movable block.

[0012] In addition, a preferred structure is that one end of the second driving rod passes through the second fixing member and is fixedly connected to the movable disk, and a locking block is provided on one side of the second fixing member, and a locking sleeve is provided on the side away from the locking block.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, the three-claw disc realizes the mobile locking function through the screw translation mechanism. At the same time, an adjustable clamping block is arranged in the three-claw disc to meet different processing requirements. At the same time, a movable block is arranged in the clamping block. The movable block can tighten the inner wall of the workpiece to improve the clamping stability. At the same time, the movable disc can realize the free locking function, which effectively improves the positioning efficiency, adapts to workpieces of multiple sizes, and improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a positioning fixture for valve sleeve processing proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the movable disk connection structure proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the three-claw disc clamp proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the clamping block structure proposed by the utility model;

[0019] Figure 5 This is a schematic diagram of the movable block connection structure proposed by the utility model.

[0020] In the figure: 1 base, 2 screw translation mechanism, 21 driving rod 1, 22 screw pair, 3 fixing part 1, 4 three-claw disk, 41 slide groove, 5 clamping block, 51 movable block, 6 movable disk, 7 driving rod 2, 71 threaded wall, 8 fixing part 2, 9 locking sleeve, 10 locking block, 11 locking bolt, 12 limit groove, 13 spring. 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 1-5A positioning fixture for valve sleeve processing, comprising a base 1, a fixing member 3 is installed on one side of the upper part of the base 1 through a screw translation mechanism 2, a three-claw plate 4 is rotatably installed on one side of the fixing member 3, a clamping block 5 is installed on the outer side of the three-claw plate 4, and a movable block 51 is installed on the side away from the clamping block 5;

[0023] Furthermore, a movable disk 6 is rotatably installed on one side of the upper part of the base 1 through a fixing member 8, one end of the movable disk 6 is fixedly connected to a driving rod 7, a locking sleeve 9 is screwed on the driving rod 7 through a threaded wall 71, and a locking block 10 is provided on the side away from the locking sleeve 9.

[0024] Furthermore, a driving rod 21 is provided on one side of the screw translation mechanism 2, and a screw pair 22 is installed on the other side for limited movement, and a fixing member 3 is fixedly installed on the upper part of the screw pair 22.

[0025] Furthermore, slots are provided on the outer sides of the three-claw disk 4, and slide grooves 41 are provided on both sides of the inner walls of the slots. A clamping block 5 is installed in the slide groove 41 for limited sliding. By adjusting the clamping block 5, the processing requirements of valve sleeves of different sizes can be met.

[0026] Furthermore, a screw hole is formed through one side of the slide groove 41, and a locking bolt 11 is screwed into the screw hole. One end of the locking bolt 11 is squeezed into contact with the outer wall of the clamping block 5, so that the locking bolt 11 locks the clamping block 5 to prevent the clamping block 5 from moving.

[0027] Furthermore, a limiting groove 12 is provided at the bottom of the clamping block 5 , a movable block 51 is slidably installed in the limiting groove 12 , and a spring 13 is installed at the inner bottom end of the limiting groove 12 , and the other side of the spring 13 is connected to the movable block 51 .

[0028] Furthermore, one end of the driving rod 2 7 passes through the fixing member 2 8 and is fixedly connected to the movable disk 6 , and a locking block 10 is provided on one side of the fixing member 2 8 , and a locking sleeve 9 is provided on the side away from the locking block 10 .

[0029] In this embodiment, the screw translation mechanism 2 is adjusted by the driving rod 21, so that the screw pair 22 drives the three-claw disk 4 to move toward the side of the movable disk 6, and when adjusted to the appropriate position, the valve sleeve to be processed is clamped into the clamping block 5 in the three-claw disk 4, and the movable block 51 arranged at the bottom of the clamping block 5 presses the inner wall of the valve sleeve under the action of the spring 13, and the movable block 51 presses the outer wall of the valve sleeve, and at the same time, by rotating the driving rod 21 again, the three-claw disk 4 moves horizontally and is pressed and locked with the movable disk 6 on the other side, and the positioning and locking are completed at this time.

[0030] Among them, in actual use, the locking sleeve 9 is rotated so that the locking sleeve 9 rotates on the threaded wall 71, and the horizontal movement is achieved by threaded rotation, so that the locking sleeve 9 moves toward the locking block 10 set on one side of the fixing member 2 8, and when the locking sleeve 9 is in contact with the locking block 10 and tightened, the driving rod 2 7 cannot rotate freely, thereby completing the locking function of the movable disk 6, making the processing process more stable and convenient.

[0031] Among them, in actual use, the clamping block 5 can be moved to the outside of the three-claw disk 4 by loosening the locking bolt 11, and the clamping block 5 is moved to change the clamping distance, thereby adapting to different valve sleeve sizes. At the same time, by tightening the locking bolt 11 again, the locking bolt 11 can tighten the clamping block 5 to achieve the fixing function of the clamping block 5.

[0032] It is worth noting that the movable disk 6 is provided with small disks of different sizes, and the processing requirements of valve sleeves of different sizes can be met by replacing the small disks of different sizes.

[0033] Among them, it is worth noting that the screw translation mechanism 2 is a mechanism in which the screw drives the slider (screw pair 22) to move horizontally. It has a clear general term in this field. In this device, the screw translation mechanism 2 is driven by the driving rod 21, and the horizontal movement function of the screw pair 22 is realized through the internal screw and other components. The specific components and driving principles of the screw translation mechanism 2 not described in detail above are technical common sense known to technical personnel in this field, so they are not elaborated.

[0034] In the utility model, the three-claw disk 4 realizes the mobile locking function through the screw translation mechanism 2. At the same time, an adjustable clamping block 5 is arranged in the three-claw disk 4 to meet different processing requirements. At the same time, a movable block 51 is arranged in the clamping block 5. The movable block 51 can tighten the inner wall of the workpiece to improve the clamping stability. At the same time, the movable disk 6 can realize the free locking function, which effectively improves the positioning efficiency, adapts to workpieces of multiple sizes, and improves the processing efficiency.

[0035] 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 positioning fixture for valve sleeve machining, comprising a base (1), characterized in that: A fixing part (3) is installed on one side of the upper part of the base (1) via a screw translation mechanism (2); a three-claw disc (4) is rotatably installed on one side of the fixing part (3); a clamping block (5) is installed on the outer side of the three-claw disc (4); and a movable block (51) is installed on the side away from the clamping block (5); A movable disk (6) is rotatably mounted on one side of the upper portion of the base (1) via a second fixing member (8); one end of the movable disk (6) is fixedly connected to a second driving rod (7); a locking sleeve (9) is screwed onto the second driving rod (7) via a threaded wall (71); a locking block (10) is provided on a side away from the locking sleeve (9).

2. A positioning fixture for valve sleeve processing according to claim 1, characterized in that: A driving rod (21) is provided on one side of the screw translation mechanism (2), and a screw pair (22) is installed on the other side for limited movement, and a fixing member (3) is fixedly installed on the upper part of the screw pair (22).

3. A positioning fixture for valve sleeve processing according to claim 1, characterized in that: The three-claw plate (4) is provided with a notch on the outside, and sliding grooves (41) are provided on both sides of the inner wall of the notch. A clamping block (5) is installed in the sliding groove (41) in a limited sliding manner.

4. A positioning fixture for valve sleeve processing according to claim 3, characterized in that: A screw hole is formed through one side of the slide groove (41), and a locking bolt (11) is screwed into the screw hole. One end of the locking bolt (11) is in compression contact with the outer wall of the clamping block (5).

5. A positioning fixture for valve sleeve processing according to claim 3, characterized in that: The bottom of the clamping block (5) is provided with a limiting groove (12), a movable block (51) is slidably mounted in the limiting groove (12), and a spring (13) is mounted at the bottom end of the limiting groove (12), the other side of the spring (13) being connected to the movable block (51).

6. A positioning fixture for valve sleeve processing according to claim 1, characterized in that: One end of the second driving rod (7) passes through the second fixing member (8) and is fixedly connected to the movable disk (6), and a locking block (10) is provided on one side of the second fixing member (8), and a locking sleeve (9) is provided on the side away from the locking block (10).

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