Automatic centering multi-station machining valve body tooling

Abstract

An automatic centering multi-station machining valve body tool, the lower clamping block is positioned on the tool body and cooperates with the clamping body, the clamping mechanism composed of the clamping body and the clamping transmission bolt locks the lower positioning block; the indexing mechanism composed of the top piece, the indexing top rod and the indexing bolt completes the switching of the multi-station, realizing the multi-station machining; the upper clamping block driving bolt drives the upper clamping block to move up and be loaded into the valve body, the upper clamping block driving bolt drives the upper clamping block to move down and clamp the valve body, and simultaneously forces the middle port and the two end portions of the valve body to move to the center of the tool, so that the center of the tool body coincides with the center of the valve body, realizing automatic centering; the present application realizes multi-station machining through one-time clamping, improves the production efficiency and the product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to valve body machining technical field, specifically to a valve body machining tooling, which has automatic centering and multi-station machining function. BACKGROUND

[0002] For the valve with T-shaped structure, when machining different machining surfaces, the ordinary three-jaw or four-jaw chuck needs to disassemble, clamp and align the valve body for many times, which seriously affects the machining efficiency. Through understanding of the machining method and machining efficiency, comprehensive demonstration and investigation of many aspects, an automatic centering multi-station machining valve body tooling is designed, which realizes one-time clamping, automatic alignment of the machining part center of the valve body with the rotary shaft of the lathe, and multi-station machining. The problems of multiple alignment and disassembly in valve body machining are well solved. SUMMARY

[0003] The present application provides an automatic centering multi-station machining valve body tooling, which solves the problems of multiple alignment and disassembly in valve body machining.

[0004] To achieve the above object, the technical scheme adopted by the present application is as follows:

[0005] An automatic centering multi-station machining valve body tooling, comprising a tooling main body, a valve body to be machined is installed in the tooling main body through upper and lower clamping blocks and is automatically centered, the rotating shaft of the lower clamping block penetrates through the positioning hole in the tooling main body, a hole is machined in the lower part of the tooling main body parallel to the axis of the tooling main body, the axis of the hole and the axis of the positioning hole are vertically eccentric, and the eccentric distance is the radius of the hole; a plane is symmetrically machined on the rotating shaft; a clamping mechanism, a indexing transmission mechanism and a spacer ring are sequentially installed in the hole from inside to outside, and the spacer ring is limited by a side cover installed on the tooling main body; the clamping mechanism and the indexing transmission mechanism move along the axis of the hole; after the valve body to be machined is rotated to the machining station by the rotating shaft of the lower clamping block pushed by the top piece of the indexing transmission mechanism, the clamping mechanism moves to make the plane of the rotating shaft of the lower clamping block and the inclined surface on the clamping body lock together.

[0006] The clamping mechanism comprises a clamping body and a clamping transmission bolt; the clamping body is a cylindrical structure, a first through hole is opened in the center of the bottom surface, a clamping threaded hole is opened on the bottom surface on the side of the first through hole, a through slot is opened on the column above the first through hole and the clamping threaded hole, the wall of the through slot has a notch, 45° inclined surfaces are arranged on the walls on both sides of the notch, and the inclined surfaces expand outwardly from the bottom surface of the clamping body; the clamping transmission bolt is connected with the clamping threaded hole, the outer end surface of the clamping transmission bolt has a clamping internal hexagonal hole, a hexagonal wrench is inserted into the clamping internal hexagonal hole to rotate and rotate the clamping transmission bolt, the clamping body is pushed to move along the axis of the hole to lock the valve body to be machined, and the outer shaft at the clamping internal hexagonal hole has a clamping shaft shoulder, and the clamping shaft shoulder is rotationally connected with the side cover.

[0007] The indexing transmission mechanism comprises an indexing ejector rod, an indexing transmission bolt and an ejector sheet; the indexing ejector rod is composed of a disc and a cylinder body connected in the center of the disc; the disc is machined with an indexing threaded hole and a clamping through hole on both sides of the cylinder body respectively; the top end of the cylinder body has a threaded part; the threaded part is threadedly connected with the ejector sheet in the through slot of the clamping body; the clamping through hole is a through hole for the clamping transmission bolt, and the indexing transmission bolt is threadedly connected with the indexing threaded hole; a hexagonal wrench is inserted into the indexing hexagonal hole to rotate, so that the indexing transmission bolt drives the threaded part at the top of the cylinder body of the indexing ejector rod to move the ejector sheet in the slot and push the valve body to be machined to rotate; the outer shaft at the indexing hexagonal hole has an indexing shaft shoulder, and the indexing shaft shoulder is rotationally connected with the side cover.

[0008] The side cover is provided with an anti-falling mechanism, which comprises a stop block; the side cover is installed on the outside of the hole; the side cover has a stepped shaft structure, the large end of which is provided with stepped holes on both sides of the center, and the small end is a tubular structure; the stepped holes and the tubular structure are through; the indexing transmission bolt and the clamping transmission bolt pass through the stepped holes respectively, and then the stop block is used to press the indexing shaft shoulder of the indexing transmission bolt, the clamping shaft shoulder of the clamping transmission bolt, and the large hole of the stepped hole is threadedly connected after the stop block, and the indexing shaft shoulder and the clamping shaft shoulder rotate in the large hole.

[0009] The end face of the small end of the stepped shaft structure of the side cover is in contact with the spacer ring, and the other end of the spacer ring is limited by the stepped face in the hole; the upper surface of the spacer ring limits the maximum distance of the downward movement of the clamping body, and the lower surface of the spacer ring limits the maximum distance of the upward movement of the indexing ejector rod, i.e. the ejector sheet.

[0010] The mounting structure of the upper clamp block and the tool body is that the light axis end of the upper clamp block drive bolt is fixed after the upper end of the upper clamp block is fixed by the upper clamp block gland, so that the upper clamp block drive bolt is rotationally connected with the upper clamp block and the upper clamp block gland; the other end of the upper clamp block drive bolt is threadedly connected with the threaded hole of the upper cover; the upper cover is installed on the tool body; the outer end face of the connection between the upper clamp block drive bolt and the upper cover has an upper clamp block hexagonal hole; rotating the upper clamp block hexagonal hole makes the upper clamp block move towards the valve body and clamp the valve body.

[0011] The contact surfaces of the upper clamp block and the lower clamp block with the valve body to be machined are respectively adapted to the shape and size of the center port and the two end passages of the valve body to be machined and are machined into cross-shaped cylindrical surfaces.

[0012] The tool body mounting has a bottom cover below the upper cover hole of the tool body, and the bottom cover is provided with an adjusting screw in the center.

[0013] The application is directed to a kind of automatic centering multi-station machining valve body tool specially designed for common three-jaw, four-jaw chuck machining valve body to be through multiple disassembly, clamping, alignment, which seriously affects machining efficiency, realizes valve body center and lathe rotation shaft automatic alignment, multi-station machining. It well solves the alignment, multiple disassembly and other problems in valve body machining, improves product machining quality and reduces work intensity, and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the shape structure of the valve body to be machined.

[0015] Figure 2 It is a schematic view of the part machining of the valve body to be machined.

[0016] Figure 3 It is a side view of Figure 2 .

[0017] Figure 4 It is a disassembly view of the application.

[0018] Figure 5 It is a schematic view of the assembly of the application and the valve body to be machined.

[0019] Figure 6 It is a schematic view of the front view of the tool body of the application.

[0020] Figure 7 It is a schematic view of the rear view of Figure 6 .

[0021] Figure 8 It is a schematic view of the side cover of the application.

[0022] Figure 9 It is a schematic view of the structure of Figure 8 .

[0023] Figure 10 It is a schematic view of the stop block structure of the application.

[0024] Figure 11 It is a schematic view of the adjusting screw structure of the application.

[0025] Figure 12 It is a schematic view of the top piece structure of the application.

[0026] Figure 13 It is a schematic view of the indexing transmission bolt structure of the application.

[0027] Figure 14 It is a schematic view of the indexing top rod structure of the application.

[0028] Figure 15 It is a schematic view of the clamping body of the application.

[0029] Figure 16 Fig. 2 is a schematic view of the three-dimensional structure of the clamping body of the present application;

[0030] Figure 17 Fig. 4 is a schematic view of the structure of the driving bolt of the upper clamping block of the present application;

[0031] Figure 18 Fig. 5 is a schematic view of the structure of the cover of the upper clamping block of the present application;

[0032] Figure 19 Fig. 6 is a schematic view of the structure of the upper clamping block of the present application;

[0033] Figure 20 Fig. 7 is a schematic view of the structure of the upper cover of the present application;

[0034] Figure 21 Fig. 8 is a schematic view of the three-dimensional structure of the upper clamping block of the present application;

[0035] Figure 22 Fig. 9 is a schematic view of the three-dimensional structure of the upper clamping block of the present application;

[0036] Figure 23 Fig. 10 is a schematic view of the structure of the lower cover of the present application;

[0037] Figure 24 Fig. 11 is a schematic view of the structure of the spacer ring of the present application;

[0038] Figure 25 Fig. 12 is a schematic view of the three-dimensional structure of the lower clamping block of the present application;

[0039] Figure 26 Fig. 13 is a schematic view of the three-dimensional structure of the lower clamping block of the present application;

[0040] Figure 27 Fig. 14 is a schematic view of the sequence of the station conversion of the present application. DETAILED DESCRIPTION

[0041] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. The present embodiment is implemented on the basis of the technical solution of the present application, and detailed embodiments and specific operation processes are given, but the protection scope is not limited to the following embodiments.

[0042] REFERENCE Figures 1-26The utility model provides a kind of automatic centering multi-station machining valve body tool, including tool main body 1, to be processed valve body is installed in tool main body 1 by upper clamp block 14, lower clamp block 13 rotation and automatic centering, the rotation axis 13-3 of lower clamp block 13 rotates through the positioning hole 1-5 in tool main body 1, the lower part of tool main body 1 is machined with hole 1-6, which is parallel to the axis of tool main body 1, the axis of the hole 1-6 and the axis of positioning hole 1-5 is vertically eccentric, and the eccentric distance F is the radius of hole 1-6;Plane 13-4 is symmetrically machined on the rotation axis 13-3 of the lower clamp block 13;Clamping mechanism, indexing transmission mechanism, spacer ring 6 are sequentially installed from inside to outside in hole 1-6, and are limited by side cover 10 installed in tool main body 1;Clamping mechanism, indexing transmission mechanism move along the axis of hole 1-6;After the rotation axis 13-3 of lower clamp block 13 is pushed by the top sheet 4 of indexing transmission mechanism and the to-be-processed valve body is rotated to machining station, clamping mechanism moves so that the plane 13-4 of the rotation axis 13-3 of lower clamp block 13 and the inclined surface 5-1 on the clamping body 5 are locked and matched.The clamping body 5 is loosened when moving outwards along the axis of hole 1-6.

[0043] As Figure 4 、 Figure 6 、 Figure 7 、 Figures 15-17 The clamping mechanism includes clamping body 5 and clamping transmission bolt 7, as shown in the drawings;The clamping body 5 is a cylindrical structure, with a first through hole 5-2 in the center of the bottom surface, a clamping threaded hole 5-3 in the bottom surface on the side of the first through hole 5-2, a through slot 5-4 in the column above the first through hole 5-2 and the clamping threaded hole 5-3, a notch in the wall of the through slot 5-4, 45° inclined surfaces on the walls on both sides of the notch, and the inclined surfaces expanding outwardly toward the bottom surface of the clamping body 5;The clamping transmission bolt 7 is connected with the clamping threaded hole 5-3, and the outer end surface of the clamping transmission bolt 7 has a clamping internal hexagonal hole 7-1, a hexagonal wrench is inserted into the clamping internal hexagonal hole 7-1 to rotate the clamping transmission bolt 7, push the clamping body 5 to move along the axis of hole 1-6 to lock the to-be-processed valve body, and the outer shaft at the clamping internal hexagonal hole 7-1 has a clamping shaft shoulder 7-3, which is rotationally connected with the side cover 10.

[0044] As Figure 4 、 Figure 6 、 Figure 7 、 Figures 12-13The indexing transmission mechanism includes an indexing ejector rod 12, an indexing transmission bolt 11 and an ejector plate 4. The indexing ejector rod 12 is composed of a disc and a cylinder connected to the center of the disc. The disc is provided with an indexing threaded hole 12-3 and a clamping through hole 12-1 on both sides of the cylinder respectively. The top end of the cylinder is provided with a threaded part 12-2. The threaded part 12-2 is threadedly connected with the ejector plate 4 located in the through slot 5-4 of the clamping body 5. The clamping through hole 12-1 is a through hole for the clamping transmission bolt 7, and the indexing transmission bolt 11 is threadedly connected with the indexing threaded hole 12-3. The hexagonal wrench is inserted into the indexing internal hexagonal hole 11-1 to rotate, so that the indexing transmission bolt 11 drives the threaded part 12-2 at the top of the cylinder of the indexing ejector rod 12 to move the ejector plate 4 in the slot 5-4 and push the valve body to be machined to rotate. The outer shaft at the indexing internal hexagonal hole 11-1 is provided with an indexing shaft shoulder 11-3, which is rotatably connected with the side cover 10. The indexing ejector rod 12 is moved along the axis of the hole 1-6 to push the lower clamp block 13 to rotate by 45 degrees, so as to complete the switching of the work station.

[0045] As Figure 4 , Figures 8-10 , the side cover 10 is provided with an anti-extrusion mechanism, which includes a stop block 9. The side cover 10 is installed on the outside of the hole 1-6. The side cover 10 is in the shape of a stepped shaft structure. The large end is provided with a stepped hole, and the small end is in a tubular structure. The stepped hole and the tubular structure are through. The indexing transmission bolt 11 and the clamping transmission bolt 7 pass through the stepped hole respectively, and then the stop block 9 is used to press the indexing shaft shoulder 11-3 of the indexing transmission bolt 11 and the clamping shaft shoulder 7-3 of the clamping transmission bolt 7. Then the stop block 9 is threadedly connected with the large end hole 10-3 of the stepped hole. The indexing shaft shoulder 11-3 and the clamping shaft shoulder 7-3 rotate in the large end hole 10-3. The stop block 9 prevents the indexing mechanism and the clamping mechanism from being extruded out of the tool main body. The inner hole of the stop block 9 is a smooth hole 9-2, and the outer periphery is a threaded surface 9-1.

[0046] As Figure 8 , Figure 9 , Figure 24 , Figure 27 , the end face 10-4 of the small end of the stepped shaft structure of the side cover 10 is in contact with the spacer ring 6, and the other end of the spacer ring 6 is limited by the stepped face in the hole 1-6. The upper surface of the spacer ring 6 limits the maximum distance of the downward movement of the clamping body 5, and the lower surface of the spacer ring 6 limits the maximum distance of the upward movement of the indexing ejector rod 12, i.e. the ejector plate 4. The central through hole 6-1 of the spacer ring 6 is for the central cylinder of the indexing ejector rod, and the two sides are through holes 6-2 for the indexing transmission bolt 11 and the clamping transmission bolt 7.

[0047] As Figure 4 , Figures 18-22The installation structure of the upper clamp block 14 and the tool body 1 is that the upper end of the upper clamp block 14 is fixed to the light axis end of the upper clamp block driving bolt 15 through the upper clamp block gland 16, so that the upper clamp block driving bolt 15 is rotationally connected with the upper clamp block 14 and the upper clamp block gland 16, the shaft 14-3 of the upper clamp block 14 is installed and positioned in the inner hole 18-3 of the upper cover, the other end of the upper clamp block driving bolt 15 is threadedly connected with the threaded hole 18-2 of the upper cover 18, and the outer circle 18-4 of the upper cover 18 is matched with the upper cover hole 1-4 of the tool body 1, so that the upper clamp block 14 is radially positioned, and then the upper cover is connected with the threaded hole 1-3 on the tool body through eight inner hexagonal screws, so as to clamp or loosen the valve body. The outer end surface of the connection between the upper clamp block driving bolt 15 and the upper cover 18 is provided with an upper clamp block inner hexagon 15-2, and rotating the upper clamp block inner hexagon 15-2 can make the upper clamp block driving bolt move along the axis of the hole 18-3 and force the upper clamp block 14 to move towards the valve body, so as to clamp the valve body. During the clamping process, the valve body is automatically positioned, so that the center of the passage and the center of the middle port are consistent with the center of rotation of the machine tool during machining, and are kept self-locked; reversely rotating the upper clamp block driving bolt can make the upper clamp block move in the opposite direction, so as to loosen the valve body, and the valve body can be taken out from the tool.

[0048] As Figure 1 , Figure 21 , Figure 22 , Figure 25 , Figure 26 The contact surfaces of the upper clamp block 14 and the lower clamp block 13 and the valve body to be machined are respectively matched with the outer dimensions of the middle port and the passage at both ends of the valve body to be machined and are processed into cross-shaped cylindrical surfaces. The lower clamp block cylindrical surface 13-2 is matched with the outer circle dimension of the middle port of the valve body, the lower clamp block cylindrical surface 13-1 is matched with the outer circle dimension of the passage at both ends of the valve body, the upper clamp block cylindrical surface 14-3 is matched with the outer circle dimension of the middle port of the valve body to be machined, and the upper clamp block cylindrical surface 14-4 is matched with the outer circle dimension of the passage at both ends of the valve body.

[0049] As Figure 4 , Figure 6 , Figure 23 A bottom cover hole is formed on the tool body 1 below the upper cover hole 1-4 on the tool body 1, screw holes 3-1 are uniformly distributed on the outer edge of the bottom cover 3, an adjusting screw hole 3-2 is arranged in the middle, the inner hexagonal screw 2 is installed in the bottom cover hole through the screw holes 3-1, and the adjusting screw 20 is connected with the adjusting screw hole 3-2. Adjusting the adjusting screw 20 can make the center of the valve body to be machined consistent with the center of the tool.

[0050] The installation and working process of the present application is as follows:

[0051] As Figure 4 , Figure 13 , Figure 27 The tool body 1 is fixed on the lathe chuck, the shaft 14-3 of the upper clamp block and the lower clamp block cylindrical surface 13-2 are perpendicular to the front surface 1-8 of the tool body, the valve body B surface (seeFigure 2 ) outwardly into the upper and lower clamping blocks, rotate the valve body to check whether the center of the valve body is consistent with the center of the tool, if not, adjust the adjusting screw 20 to make the center consistent; rotate the valve body to the A surface parallel to the front surface 1-8 of the tool body (station ①), rotate the clamping inner hex 7-1 with the inner hex wrench, clamp the lower clamping block; rotate the upper clamping block inner hex 15-2 to clamp the valve body, process the plane of the A surface, ensure the half size of the structure length and the inner hole da, E size; after processing, keep the upper clamping block drive bolt stationary, rotate the clamping inner hex 7-1 with the inner hex wrench, make the clamping body move down to the lowest position, rotate the indexing inner hex 11-1 with the inner hex wrench, make the indexing top rod rise, push the lower clamping block through the top piece to rotate 45°, retreat the top piece to the lowest position, rotate the clamping inner hex 7-1 in the opposite direction with the inner hex wrench, make the clamping body move up, the 45° clamping body inclined surface 5-1 is in contact with the plane 13-4 of the lower clamping block, until the clamping is switched to the B surface processing station (station ②), process the end face of the plane B, db4, db1, db2, db3 size; similarly, rotate to the C surface (station ③) to process the C surface end face, dc and D size, rotate to station ④, loosen the upper clamping block by rotating the upper clamping block bolt, take out the valve body; install another valve body and start the next valve body processing cycle.

[0052] The application realizes accurate size precision and position precision of the A, B and C surfaces of the valve body to be processed, processes the A end channel da and the valve seat hole E, processes the B surface db1, db2, db3 and db4, and processes the C end channel dc and the valve seat hole, which solves the problems of alignment, multiple disassembly and assembly in valve body processing, and reduces the processing cost.

[0053] The above describes the preferred embodiments of the application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the structural idea of the application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the prior art according to the idea of the application should be within the protection scope determined by the claims.

Claims

1. An automatic centering multi-station machining valve body tooling, characterized in that, The utility model provides a valve body automatic centering and clamping device, including tool body (1), and the valve body to be processed is installed in tool body (1) through upper clamping block (14) and lower clamping block (13) rotation and automatic centering, and the pivot (13-3) of lower clamping block (13) rotates and passes through the positioning hole (1-5) in tool body (1), and the lower part of tool body (1) is processed with the hole (1-6) parallel to the axis of tool body (1), and the axis of the hole (1-6) and the axis of positioning hole (1-5) are vertically eccentric and set, and the eccentric distance (F) is the radius of hole (1-6), the pivot (13-3) is processed with plane (13-4) symmetry, the hole (1-6) is installed clamping mechanism, index transmission mechanism, spacer ring (6) from inside to outside in proper order and is limited by the side cover (10) installed in tool body (1) after, clamping mechanism, index transmission mechanism move along the axis of hole (1-6), the top sheet (4) of index transmission mechanism pushes the pivot rotation of lower clamping block (13) and makes the valve body to be processed to the processing station, and then clamping mechanism moves and makes the plane (13-4) of pivot (13-3) of lower clamping block (13) and the inclined plane (5-1) on clamping body (5) lock tightly, the clamping mechanism includes clamping body (5) and clamping transmission bolt (7), the clamping body (5) is cylindrical structure, and the bottom surface center is opened with first through hole (5-2), and the bottom surface on the side of first through hole (5-2) is opened with clamping threaded hole (5-3), and the column on the top of first through hole (5-2) and clamping threaded hole (5-3) is opened with through slot (5-4), and the wall of through slot (5-4) has notch, and the wall on both sides of the notch is equipped with 45 ° inclined plane, and the inclined plane expands to the bottom surface of clamping body (5) outward, clamping transmission bolt (7) is connected with clamping threaded hole (5-3), and the outer end surface of clamping transmission bolt (7) has clamping internal hexagon hole (7-1), and the hexagonal spanner is inserted into clamping internal hexagon hole (7-1) and rotates to make clamping transmission bolt (7) rotate, and pushes clamping body (5) and moves along the axis of hole (1-6) and locks the valve body to be processed, and the outer shaft at the place of clamping internal hexagon hole (7-1) has clamping shaft shoulder (7-3), and the clamping shaft shoulder (7-3) is rotationally connected with side cover (10), the index transmission mechanism includes index top rod (12), index transmission bolt (11) and top sheet (4), the index top rod (12) is composed of disc and the cylinder connected in the center of disc, the disc is processed with index threaded hole (12-3) and clamping through hole (12-1) on both sides of cylinder respectively, and the top end of cylinder has threaded part (12-2), the threaded part (12-2) is threadedly connected with top sheet (4) in the through slot (5-4) of clamping body (5), clamping through hole (12-1) is the through hole of clamping transmission bolt (7), and index transmission bolt (11) is threadedly connected with index threaded hole (12-3), and the hexagonal spanner is inserted into index internal hexagon hole (11-1) and rotates to make index transmission bolt (11) drive and push top sheet (4) in the movement in slot (5-4) and rotate the valve body to be processed,The outer shaft at the index internal hexagon hole (11-1) has an index shaft shoulder (11-3), which is rotationally connected with the side cover (10); the tool body (1) is provided with a bottom cover (3) below the upper cover hole (1-4) on the tool body (1), and the bottom cover (3) is provided with an adjusting screw (20) in the center.

2. The automatic centering multi-station machining valve body tooling of claim 1, wherein, The side cover (10) is provided with a anti-drop mechanism, which comprises a stop block (9); the side cover (10) is installed outside the hole (1-6); the side cover (10) is in the shape of a stepped shaft structure, the large end center is provided with a stepped hole on both sides, and the small end is in a tubular structure; the stepped hole and the tubular structure are through; the stepped hole is respectively threaded through the index transmission bolt (11) and the clamping transmission bolt (7), and then the index shaft shoulder (11-3) of the index transmission bolt (11) and the clamping shaft shoulder (7-3) of the clamping transmission bolt (7) are pressed by the stop block (9), and then the stop block (9) and the large end hole (10-3) of the stepped hole are threadedly connected; the index shaft shoulder (11-3) and the clamping shaft shoulder (7-3) rotate in the large end hole (10-3).

3. The automatic centering multi-station machining valve body tooling of claim 2, wherein, The end face (10-4) of the small end of the stepped shaft structure of the side cover (10) is in contact with the spacer ring (6), and the other end of the spacer ring (6) is limited by the stepped surface in the hole (1-6); the upper surface of the spacer ring (6) limits the maximum distance of the downward movement of the clamping body (5), and the lower surface of the spacer ring (6) limits the index top rod (12), that is, the maximum distance of the upward movement of the top sheet (4).

4. The automatic centering multi-station machining valve body tooling of claim 1, wherein, The installation structure of the upper clamp block (14) and the tool main body (1) is that: the upper end of the upper clamp block (14) is fixed to the optical axis end of the upper clamp block driving bolt (15) through the upper clamp block gland (16), so that the upper clamp block driving bolt (15) is rotatably connected with the upper clamp block (14) and the upper clamp block gland (16); the other end of the upper clamp block driving bolt (15) is threadedly connected with the threaded hole (18-2) of the upper cover (18); the upper cover (18) is installed on the tool main body (1); the outer end face of the connection between the upper clamp block driving bolt (15) and the upper cover (18) is provided with an upper clamp block internal hexagon (15-2); rotating the upper clamp block internal hexagon (15-2) moves the upper clamp block (14) towards the valve body, and clamps the valve body.

5. The automatic centering multi-station machining valve body tooling of claim 1, wherein, The contact surfaces of the upper clamp block (14) and the lower clamp block (13) and the valve body to be processed are respectively adapted to the shape and size of the center port and the two end passages of the valve body to be processed and are processed into cross-shaped cylindrical surfaces.

Images