Clamping device for arc-shaped pallet truck machining of ball valve

Abstract

The utility model relates to the technical field of ball valve turning machining, in particular to a clamping device for ball valve arc-shaped supporting plate turning machining, which comprises two fixing plates and at least two clamping plates, the two fixing plates are vertically arranged at intervals, and the clamping plates are horizontally connected between the two fixing plates. The outer surface of the clamping plate is an arc-shaped supporting plate mounting surface, and at least one positioning connecting piece is arranged on the clamping plate. When the arc surfaces of the arc-shaped supporting plates are lathed, firstly, the fixing plate on one side abuts against one end of a lathe, then, the fixing plate on the other side is clamped through a four-jaw chuck of the lathe, then, the arc-shaped supporting plates are clamped on the clamping plates, one arc-shaped supporting plate is clamped on one clamping plate, and then the arc surfaces of the arc-shaped supporting plates can be lathed in sequence. And in addition, turning of arc surfaces at the two ends can be completed, equivalently, turning of a plurality of arc-shaped supporting plates can be completed through one-time clamping, and the turning efficiency of the arc-shaped supporting plates is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of turning processing of ball valves, in particular to a clamping device for turning processing of an arc-shaped pallet of a ball valve. Background Art

[0002] As Figure 1 shown, four process holes 41 are arranged on a common arc-shaped pallet 4 of a ball valve, a cylindrical through hole 42 is arranged in the middle, and arc surfaces 43 are arranged at both ends. At present, the arc surface 43 is usually turned on a CNC boring machine or a horizontal milling machining center. During turning, after one end is processed, the other end is processed after reversing, and only one arc-shaped pallet 4 can be processed in one clamping, which seriously affects the turning efficiency of the arc-shaped pallet 4. Summary of the Utility Model

[0003] The technical problem solved by the utility model is to provide a clamping device for turning processing of an arc-shaped pallet of a ball valve, which can improve the turning efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a clamping device for turning processing of an arc-shaped pallet of a ball valve, which includes two fixed plates and at least two clamping plates. The two fixed plates are arranged vertically at intervals, and the clamping plates are horizontally connected between the two fixed plates;

[0005] The outer surface of the clamping plate is an arc-shaped pallet mounting surface, and at least one positioning connecting piece is arranged on the clamping plate. The arc-shaped pallet is detachably arranged on the arc-shaped pallet mounting surface through the positioning connecting piece.

[0006] Further, the shape of the fixed plate is cylindrical, the shape of the clamping plate is cuboid, and the clamping plates are evenly distributed on the fixed plate.

[0007] Further, the fixed plate includes a chuck fixing cylindrical part and a reference cylindrical part connected together, and the chuck fixing cylindrical part is located outside the reference cylindrical part.

[0008] Further, a process boss is arranged in the middle of the fixed plate, and a tightening groove is arranged in the middle of the process boss.

[0009] Further, at least two notches are arranged on the fixed plate, and the notches are evenly distributed on the fixed plate.

[0010] Further, the number of the positioning connecting pieces is 4, and the positions of the 4 positioning connecting pieces correspond to the positions of the 4 process holes on the arc-shaped pallet;

[0011] The positioning connecting piece includes a stud and a nut arranged on the stud.

[0012] Furthermore, welding connection holes are provided on the fixed plate, and the clamping plate is correspondingly arranged in the welding connection holes.

[0013] Furthermore, it further includes a cylindrical positioning seat which is arranged in the middle of the installation surface of the arc-shaped support plate, and the through hole of the arc-shaped support plate can be correspondingly sleeved on the cylindrical positioning seat.

[0014] Furthermore, positioning seat connection holes are provided on the clamping plate, a positioning connection column is connected below the cylindrical positioning seat, the positioning connection column is correspondingly arranged in the positioning seat connection holes, and the cylindrical positioning seat is detachably arranged on the installation surface of the arc-shaped support plate through a connection bolt.

[0015] Furthermore, at least one air vent groove is provided on the positioning connection column;

[0016] An installation groove is provided in the middle of the installation surface of the arc-shaped support plate, and the cylindrical positioning seat is arranged in the installation groove.

[0017] The beneficial effects of the present utility model are as follows: The clamping device of the present utility model for the turning processing of the arc-shaped support plate of a ball valve includes two fixed plates and at least two clamping plates. The two fixed plates are arranged vertically at intervals, and the clamping plates are horizontally connected between the two fixed plates; the outer surface of the clamping plate is the installation surface of the arc-shaped support plate, and at least one positioning connecting piece is provided on the clamping plate, and the arc-shaped support plate is detachably arranged on the installation surface of the arc-shaped support plate through the positioning connecting piece. When turning the arc surface of the arc-shaped support plate, first, one side of the fixed plate is tightened against one end of the lathe, then the other side of the fixed plate is clamped by the four-jaw chuck of the lathe, and then the arc-shaped support plate is clamped on the clamping plate. One arc-shaped support plate is clamped on one clamping plate, and then the arc surfaces of each arc-shaped support plate can be successively turned, and the turning of the arc surfaces at both ends can be completed. It is equivalent to completing the turning processing of multiple arc-shaped support plates in one clamping, significantly improving the turning processing efficiency of the arc-shaped support plate. Moreover, the clamping device of the present utility model has a simple structure, and its overall shape is an axisymmetric and centrosymmetric figure. When it is installed on the lathe, it does not need to distinguish directions, which is convenient for its installation and further improves the turning processing efficiency of the arc-shaped support plate. Description of the Drawings

[0018] Figure 1 is the structural schematic diagram of the arc-shaped support plate;

[0019] Figure 2 is the structural schematic diagram of the clamping device;

[0020] Figure 3 is the schematic diagram of the arc-shaped support plate clamped on the clamping device;

[0021] Figure 4 is the structural schematic diagram of the fixed plate;

[0022] Figure 5It is a schematic structural diagram of the clamping plate;

[0023] Figure 6 It is a schematic structural diagram of the positioning connecting piece;

[0024] Marked as: fixed plate 1, chuck fixing cylindrical part 11, reference cylindrical part 12, process boss 13, notch 14, welding connection hole 15, clamping plate 2, positioning seat connection hole 21, installation groove 22, positioning connecting piece 3, cylindrical positioning seat 5, arc-shaped supporting plate 4, process hole 41, through hole 42, arc surface 43, positioning connection column 51, air vent groove 52. Specific implementation manner

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0026] As Figures 2 to 6 shown, the clamping device of the present invention for the turning processing of the arc-shaped supporting plate of the ball valve includes two fixed plates 1 and at least two clamping plates 2. The two fixed plates 1 are arranged vertically at intervals, and the clamping plates 2 are horizontally connected between the two fixed plates 1;

[0027] The outer surface of the clamping plate 2 is an arc-shaped supporting plate installation surface. At least one positioning connecting piece 3 is arranged on the clamping plate 2, and the arc-shaped supporting plate 4 is detachably arranged on the arc-shaped supporting plate installation surface through the positioning connecting piece 3.

[0028] Again as Figure 2 shown, the two fixed plates 1 are arranged parallel to each other, the clamping plate 2 is perpendicularly connected to the fixed plate 1, and the fixed plate 1 and the clamping plate 2 form a rotary frame structure. When turning the arc surface 43 of the arc-shaped supporting plate 4, first, one side of the fixed plate 1 is tightened against one end of the lathe, and then the other side of the fixed plate 1 is clamped by the four-jaw chuck of the lathe. Then, the arc-shaped supporting plate 4 is clamped on the clamping plate 2. One arc-shaped supporting plate 4 is clamped on one clamping plate 2, and then the arc surfaces 43 of each arc-shaped supporting plate 4 can be successively turned, which is equivalent to completing the turning of multiple arc-shaped supporting plates 4 in one clamping, significantly improving the turning efficiency of the arc-shaped supporting plate.

[0029] Specifically, in order to ensure the use effect of the clamping device, again as Figure 2 shown, the shape of the fixed plate 1 is cylindrical, the shape of the clamping plate 2 is cuboid, and the clamping plates 2 are evenly distributed on the fixed plate 1. The number of the clamping plates 2 is determined according to the size of the lathe and the arc-shaped supporting plate 4. Preferably, there are 4 - 6 clamping plates 2, and the turning of 4 - 6 arc-shaped supporting plates 4 can be completed in one clamping.

[0030] The four-jaw chuck of the lathe clamps the fixed plate 1 to fix the entire clamping device. In order to ensure the use effect of the fixed plate 1, again as Figure 4As shown, the fixing plate 1 includes a chuck fixing cylindrical portion 11 and a reference cylindrical portion 12 connected together. The chuck fixing cylindrical portion 11 is located outside the reference cylindrical portion 12. The fixing plate 1 has a stepped cylindrical structure. The chuck fixing cylindrical portion 11 serves as the outer circular surface for fixing the four-jaw chuck, and the reference cylindrical portion 12 serves as the reference outer circular surface for calibrating the dial indicator. Usually, the chuck fixing cylindrical portion 11 is wider than the reference cylindrical portion 12.

[0031] To facilitate the fixing plate 1 to be tightly abutted against one end of the lathe, as shown in Figure 2 、 Figure 4 a process boss 13 is provided in the exact middle of the fixing plate 1. A tightening groove is provided in the exact middle of the process boss 13. The process boss 13 has a cylindrical shape.

[0032] To reduce the weight of the fixing plate 1, at least two notches 14 are provided on the fixing plate 1, preferably 4. The notches 14 are evenly distributed on the fixing plate 1. The notches 14 have a fan shape and serve to reduce weight and eliminate stress.

[0033] To improve the connection firmness between the fixing plate 1 and the mounting plate 2, the fixing plate 1 and the mounting plate 2 are connected together by welding. To improve the welding effect and facilitate the welding operation, as shown in Figure 4 a welding connection hole 15 is provided on the fixing plate 1. The mounting plate 2 is fitted in the welding connection hole 15, and then welded between the fixing plate 1 and the mounting plate 2.

[0034] One function of the positioning connecting member 3 is its positioning function, and the other function is to detachably clamp the arc-shaped support plate 4 on the mounting plate 2. To facilitate the use and the use effect of the positioning connecting member 3, the number of the positioning connecting members 3 is 4. The positions of the 4 positioning connecting members 3 correspond to the positions of the 4 process holes 41 on the arc-shaped support plate 4. The positioning connecting member 3 includes a stud and a nut provided on the stud. During clamping, a stud passes through a process hole 41 and is fixed by a nut.

[0035] To make it more convenient to detachably clamp the arc-shaped support plate 4 on the mounting plate 2 and improve the connection firmness, as shown in Figure 2 、 Figure 3 and Figure 6 a cylindrical positioning seat 5 is further provided in the present utility model. The cylindrical positioning seat 5 is provided in the middle of the arc-shaped support plate mounting surface. During clamping, the through hole 42 of the arc-shaped support plate 4 is fitted over the cylindrical positioning seat 5. To facilitate the removal of the arc-shaped support plate 4 from the cylindrical positioning seat 5, at least one air vent groove 52 or air vent step is provided on the positioning connection column 51. And, the width of the mounting plate 2 should be lower than the width of the arc-shaped support plate 4.

[0036] For the convenience of setting the cylindrical positioning seat 5 on the clamping plate 2, a positioning seat connection hole 21 is provided on the clamping plate 2. A positioning connection column 51 is connected below the cylindrical positioning seat 5, and the positioning connection column 51 is matchingly arranged in the positioning seat connection hole 21. The cylindrical positioning seat 5 is detachably arranged on the arc-shaped support plate mounting surface through a connecting bolt. For the installation of the cylindrical positioning seat 5, an installation groove 22 is provided in the middle of the arc-shaped support plate mounting surface, and the cylindrical positioning seat 5 is arranged in the installation groove 22. Such a setting makes the installation plane of the cylindrical positioning seat 5 lower than the installation surface of the arc-shaped support plate 4, effectively reducing the interference caused by the flatness error of the large-area contact between the arc-shaped support plate 4 and the clamping plate 2.

Claims

1. A clamping device for lathe processing of arc-shaped support plates for ball valves, characterized in that: It comprises two fixing plates (1) and at least two clamping plates (2), the two fixing plates (1) are arranged vertically and spaced apart, and the clamping plates (2) are arranged horizontally and connected between the two fixing plates (1); The outer surface of the clamping plate (2) is an arc-shaped support plate installation surface. At least one positioning connector (3) is provided on the clamping plate (2). The arc-shaped support plate (4) is detachably arranged on the arc-shaped support plate installation surface via the positioning connector (3).

2. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 1, characterized in that: The fixing plate (1) is cylindrical in shape, the clamping plates (2) are rectangular in shape, and the clamping plates (2) are evenly distributed on the fixing plate (1).

3. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 1, characterized in that: The fixing plate (1) comprises a chuck fixing cylindrical portion (11) and a reference cylindrical portion (12) which are connected together, and the chuck fixing cylindrical portion (11) is located outside the reference cylindrical portion (12).

4. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 1, characterized in that: A process boss (13) is arranged in the middle of the fixing plate (1), and a tightening groove is arranged in the middle of the process boss (13).

5. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 1, characterized in that: At least two notches (14) are provided on the fixing plate (1), and the notches (14) are evenly distributed on the fixing plate (1).

6. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 1, characterized in that: The number of the positioning connectors (3) is 4, and the positions of the 4 positioning connectors (3) correspond to the positions of the 4 process holes (41) on the arc-shaped support plate (4); The positioning connector (3) comprises a stud and a nut arranged on the stud.

7. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 1, characterized in that: A welding connection hole (15) is provided on the fixing plate (1), and the clamping plate (2) is matched and arranged in the welding connection hole (15).

8. The clamping device for lathe machining of arc-shaped support plates for ball valves according to any one of claims 1 to 7, characterized in that: It also comprises a cylindrical positioning seat (5), which is arranged in the middle of the arc-shaped supporting plate installation surface, and the through hole (42) of the arc-shaped supporting plate (4) can be matched and sleeved on the cylindrical positioning seat (5).

9. The clamping device for lathe processing of arc-shaped support plates for ball valves according to claim 8, characterized in that: A positioning seat connection hole (21) is provided on the clamping plate (2), a positioning connection column (51) is connected below the cylindrical positioning seat (5), the positioning connection column (51) is matched and arranged in the positioning seat connection hole (21), and the cylindrical positioning seat (5) is detachably arranged on the arc-shaped support plate installation surface by means of connection bolts.

10. The clamping device for lathe processing of arc-shaped support plates of ball valves according to claim 8, characterized in that: At least one air release groove (52) is provided on the positioning connection column (51); A mounting groove (22) is arranged in the middle of the arc-shaped support plate mounting surface, and a cylindrical positioning seat (5) is arranged in the mounting groove (22).

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