Clamping mechanism for keeping coaxiality machining of valve body

Abstract

The utility model discloses a clamping mechanism for keeping coaxiality processing of a valve body, which comprises a horizontally arranged base, and a clamping disc is arranged at one end of the base; an axial positioning assembly is arranged on the clamping disc, and a balance weight disc is arranged on the clamping disc. The axial positioning assembly comprises an axial rod arranged in the axial direction of the clamping disc, and an L-shaped sliding groove in the length direction of the axial rod is formed in the axial rod. A vertical shifting rod is arranged in the L-shaped sliding groove, and the bottom of the shifting rod is connected with a telescopic rod arranged in the axial rod in a sleeved mode. A circular ring positioning assembly is arranged at the other end of the base, and a plurality of positioning holes used in cooperation with the circular ring positioning assembly are formed in the base. The device has the advantages of being simple in structure, high in stability, convenient to use and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping, and more specifically to a clamping mechanism for maintaining the coaxiality of a valve body during machining. Background Art

[0002] The valve body is an important workpiece in the valve. At present, when drilling or threading the annular workpiece in the valve body, the outer ring is supported, which is easy to cause slipping and insufficient coaxiality; ensuring coaxiality is an important prerequisite for valve body production. If the coaxiality is unqualified, the valve body processing will not meet the processing requirements.

[0003] Therefore, there is an urgent need for a clamping mechanism that can maintain the coaxiality of the valve body. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a clamping mechanism for maintaining the coaxiality of a valve body for processing, so as to solve the problems in the background technology.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A clamping mechanism for maintaining the coaxiality of a valve body during processing, comprising a horizontally placed base, one end of which is provided with a vertically arranged clamping disk for convenient machine clamping; an axial positioning assembly is arranged on the clamping disk, and a coaxially arranged counterweight disk is arranged on the clamping disk; the axial positioning assembly comprises an axial rod arranged in the axial direction of the clamping disk and in a cylindrical shape, the axial rod is provided with an L-shaped groove along the length of the rod; a vertical lever is arranged in the L-shaped groove, and the bottom of the lever is connected to a telescopic rod sleeved in the axial rod; the other end of the base is provided with a circular ring positioning assembly for cooperating with the axial positioning assembly to position the valve body, and the base is provided with a plurality of positioning holes for cooperating with the circular ring positioning assembly.

[0007] To further optimize the technical solution, the base includes a horizontally arranged bottom plate and vertically arranged upright plates on both sides of the bottom plate.

[0008] To further optimize the technical solution, reinforcing ribs are connected between the vertical plate and the bottom plate.

[0009] To further optimize the technical solution, the ring positioning assembly includes a positioning disk horizontally arranged on the base plate and adapted to the hole on the valve body, the positioning disk is provided with a hole corresponding to the positioning hole and a clamping hole; a positioning bolt is passed through the positioning disk, and the positioning bolt passes through the positioning hole; a pressure plate larger than the hole on the valve body is arranged above the positioning disk, the pressure plate is provided with a clamping hole corresponding to the clamping hole on the positioning disk and is equipped with a clamping bolt for clamping.

[0010] To further optimize the technical solution, the clamping plate and the counterweight plate are connected via connecting bolts.

[0011] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0012] The utility model provides a clamping mechanism for maintaining the coaxiality of the valve body. The axial stability of the valve body is ensured by the axial positioning component. The valve body is ensured not to rotate around the axis by the circular ring positioning component. The circular ring positioning component is detachable and can be applied to the clamping of valve bodies of different models. The utility model has the advantages of simple structure, high stability, convenient use and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the utility model;

[0015] Among them: 1. base, 2. connecting bolts, 3. reinforcing ribs, 4. clamping plate, 5. counterweight plate, 6. axial positioning assembly, 61. axial rod, 62. telescopic rod, 63. L-shaped slide groove, 64. lever, 7. ring positioning assembly, 71. positioning disc, 72. pressure plate, 73. positioning bolts, 74. positioning holes, 75. clamping bolts, 76. clamping holes. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] A clamping mechanism for maintaining the coaxiality of the valve body, combined with Figure 1 to Figure 2 As shown, it includes a base 1, a connecting bolt 2, a reinforcing rib 3, a clamping plate 4, a counterweight plate 5, an axial positioning assembly 6, a circular ring positioning assembly 7, and a positioning hole 74. The circular ring positioning assembly 7 includes an axial rod 61, a telescopic rod 62, an L-shaped slide 63, and a lever 64; the circular ring positioning assembly 7 includes a positioning disc 71, a pressure plate 72, a positioning bolt 73, a clamping bolt 75, and a clamping hole 76.

[0018] The base 1 is placed horizontally, and includes a bottom plate arranged horizontally, a pair of vertical plates arranged opposite to each other and vertically on both sides of the bottom plate. A reinforcing rib 3 is connected between the vertical plates and the bottom plate, and the reinforcing rib is an isosceles right triangle metal sheet.

[0019] A vertically arranged clamping plate 4 is arranged at one end of the base 1, and the clamping plate 4 is convenient for clamping the machine and fixing the whole mechanism. A coaxially arranged counterweight plate 5 is arranged on the clamping plate 4, and the counterweight plate is located on the inner side of the base; and the clamping plate 4 and the counterweight plate 5 are connected by a plurality of connecting bolts 2.

[0020] The clamping disc 4 is provided with an axial positioning assembly 6, which includes an axial rod 61 arranged in the axial direction of the clamping disc 4, and the pressing hole is cylindrical. The axial rod 61 is provided with an L-shaped slide groove 63 along the length of the rod, and a vertical lever 64 is provided in the L-shaped slide groove 63, and the lever 64 can slide in the L-shaped slide groove 63. The bottom of the lever 64 is connected to the telescopic rod 62, and the telescopic rod 62 is sleeved in the axial rod 61, so as to facilitate the axial connection of the valve body.

[0021] A circular ring positioning component 7 is disposed at the other end of the base 1 , and the circular ring positioning component 7 cooperates with the axial positioning component 6 to position the valve body.

[0022] The base 1 is provided with a plurality of positioning holes 74 for use with the annular positioning assembly 7 .

[0023] The annular positioning assembly 7 includes a positioning disc 71 horizontally arranged on the bottom plate, the outer diameter of the positioning disc 71 is adapted to the inner diameter of the hole on the valve body, and the positioning disc 71 is provided with a plurality of through holes, including a hole corresponding to the positioning hole 74 and a clamping hole 76 corresponding to the pressure plate. The positioning disc 71 is provided with a positioning bolt 73, and the positioning bolt 73 passes through the positioning hole 74 to achieve a fixed connection between the base and the positioning disc. A pressure plate 72 larger than the hole on the valve body is provided above the positioning disc 71 to clamp the valve body. The pressure plate 72 is provided with a clamping hole 76 corresponding to the clamping hole 76 on the positioning disc 71, and is provided with a clamping bolt 75 to achieve clamping of the valve body through the pressure plate and the positioning disc.

[0024] When the utility model is actually used, a positioning disc matched with the valve body ring is selected and fixed on the base, and then the axial through hole of the valve body is sleeved outside the axial rod, and the valve body ring is sleeved on the positioning disc, and then a pressure plate larger than the ring on the valve body is tightened by a tightening bolt, and finally the lever is pulled out of the L-shaped slide groove to position the end of the valve body, and the valve body can be processed axially.

Claims

1. A clamping mechanism for maintaining the coaxiality of a valve body, characterized in that: The invention comprises a horizontally placed base (1), one end of which is provided with a clamping disc (4) arranged vertically for convenient machine clamping; an axial positioning assembly (6) is arranged on the clamping disc (4), and a coaxially arranged counterweight disc (5) is arranged on the clamping disc (4); the axial positioning assembly (6) comprises an axial rod (61) arranged in the axial direction of the clamping disc (4) and in a cylindrical shape, and an L-shaped slide groove (63) is provided on the axial rod (61) along the length direction of the rod; a vertical lever (64) is provided in the L-shaped slide groove (63), and the bottom of the lever (64) is connected to a telescopic rod (62) sleeved in the axial rod (61); the other end of the base (1) is provided with a circular ring positioning assembly (7) for cooperating with the axial positioning assembly (6) to position the valve body, and the base (1) is provided with a plurality of positioning holes (74) used for cooperating with the circular ring positioning assembly (7).

2. A clamping mechanism for maintaining valve body coaxiality processing according to claim 1, characterized in that: The base (1) comprises a bottom plate arranged horizontally and vertical plates arranged oppositely and vertically on both sides of the bottom plate.

3. A clamping mechanism for maintaining valve body coaxiality processing according to claim 2, characterized in that: A reinforcing rib (3) is connected between the vertical plate and the bottom plate.

4. A clamping mechanism for maintaining valve body coaxiality processing according to claim 3, characterized in that: The annular positioning assembly (7) comprises a positioning disc (71) horizontally arranged on a bottom plate and adapted to the opening on the valve body, the positioning disc (71) being provided with a hole corresponding to the positioning hole (74) and a clamping hole (76); a positioning bolt (73) is passed through the positioning disc (71), and the positioning bolt (73) passes through the positioning hole (74); a pressure plate (72) larger than the opening on the valve body is arranged above the positioning disc (71), the pressure plate (72) being provided with a clamping hole (76) corresponding to the clamping hole (76) on the positioning disc (71) and being provided with a clamping bolt (75) for clamping.

5. The clamping mechanism for maintaining the coaxiality of the valve body according to claim 1, characterized in that: The clamping plate (4) and the counterweight plate (5) are connected via connecting bolts (2).

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