Tool for machining key groove of plug valve core shaft head

Abstract

The utility model discloses a tool for processing a key groove of a valve core shaft head of a plug valve, which is characterized in that a base is provided with a sliding chute, the base is also provided with rows of first pin holes, the rows of first pin holes are positioned above the sliding chute, and paired first fixed seats are respectively and fixedly arranged on the left side and the right side of the front end of the base; second pin holes corresponding to the first pin holes are formed in the sliding seat, the paired second fixing seats are fixedly installed on the left side and the right side of the rear end of the sliding seat respectively, the sliding seat is installed in the sliding groove of the base in a sliding mode, and pin rods penetrate through the first pin holes and the second pin holes to be fixed together. The clamping mechanism has the advantages that clamping is simple, time and labor are saved, machining precision can be controlled easily, and machining efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of plug valves, and more specifically to tooling for machining the keyway of the plug valve spindle head. Background Technology

[0002] A plug valve is a rotary valve with a fan-shaped closing element. By rotating the fan-shaped valve core, the channels on the valve body are opened or closed, thus achieving opening or closing. The valve core of a plug valve consists of a plate-shaped fan-shaped sealing body and shaft ends located at both ends of the sealing body. The fan-shaped sealing body is located eccentrically between the two shaft ends. When machining the keyways on the shaft ends of the valve core, the valve core needs to be stably fixed. Currently, the commonly used method for fixing the valve core is to clamp it using complex mechanical fixtures. Using existing clamping methods is complex, costly, and labor-intensive, affecting machining efficiency. Furthermore, loosening can occur when machining the keyways at the shaft ends, affecting machining accuracy. To address these issues, we propose a tooling for machining the keyways on the shaft ends of plug valve cores. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for machining the keyway of a plug valve spindle head, thereby overcoming the aforementioned shortcomings. The clamping is simple and secure, saving time and effort, improving machining efficiency, and effectively ensuring machining accuracy.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A tooling for machining the keyway of a plug valve spindle includes a base, a first fixed seat, a slide, a second fixed seat, a clamping mechanism, a first support plate, a vertical seat, a second support plate, a column, a slide cylinder, a first pin sleeve, a support rod, a support column, a slide plate, a spring, and a first lead screw. The base has a slide groove and a row of first pin holes located above the slide groove. Pairs of the first fixed seats are fixedly installed on the left and right sides of the front end of the base. The slide has second pin holes corresponding to the first pin holes. Pairs of the second fixed seats are fixedly installed on the left and right sides of the rear end of the slide. The slide slides within the slide groove of the base and is fixed together by pins passing through the first and second pin holes. Pairs of clamping mechanisms are fixedly installed on the base and the slide. The first support plate is fixedly installed on the slide and located at the front end of the clamping mechanism on the slide. Pairs of vertical seats are fixedly installed on the first support plate. Two support plates are fixedly installed on a pair of uprights. The upright is fixedly installed on the second support plate. The upright is hollow and cylindrical. The second support plate has a through hole corresponding to the hollow part of the upright. The sliding cylinder is slidably installed inside the upright. The sliding cylinder has a pin groove. The upright has a pin hole corresponding to the pin groove. The first pin sleeve is inserted into the pin hole of the upright. The front end of the first pin sleeve is located in the pin groove. The support rod is fixedly installed on the sliding cylinder. The pair of support columns are fixedly installed at both ends of the support rod. The lower end face of the sliding cylinder has a limit hole. The sliding plate is slidably installed inside the upright, and the sliding plate is located below the sliding cylinder. The spring is placed between the sliding plate and the sliding cylinder. The lower end of the spring is fixedly connected to the sliding plate. The upper end of the spring is placed in the limit hole of the sliding cylinder and fixedly connected to the sliding cylinder. A threaded sleeve is fixedly installed on the lower end face of the sliding plate. The lower end of the first lead screw is rotatably installed on the first support plate. The upper end of the first lead screw is threadedly connected to the threaded sleeve on the sliding plate.

[0006] Preferably, the clamping mechanism includes a third support plate, a bracket, a second lead screw, a pressure plate, and fastening nuts. The bracket is fixedly mounted on the third support plate and is concave. The pair of second lead screws are respectively fixedly mounted on both sides of the bracket. The pressure plate has an opening slot corresponding to the pair of second lead screws. The pressure plate is placed on the pair of second lead screws through the opening slot. The pair of fastening nuts are respectively threaded to the second lead screws. The pair of clamping mechanisms are respectively fixedly mounted on the base and the slide through the third support plate.

[0007] Preferably, a tightening cap is fixedly installed on the first lead screw.

[0008] Preferably, the first support plate has a positioning hole, and the lower end of the first lead screw is placed in the positioning hole.

[0009] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0010] By incorporating components such as a first support plate, a second support plate, a base, a column, a support rod, and a support mechanism between paired clamping mechanisms, a simple and effective support and fixation of the sealing body in the middle section of the plug valve core is achieved. The flexible installation of the slide cylinder within the column allows for the support and fixation of valve cores of various models. The installation of a horizontal support rod on the slide cylinder ensures that the bottom of the valve core's sealing body remains horizontal during machining, facilitating control of machining accuracy. Clamping mechanisms at both ends allow for simple and quick fixation of the valve core's shaft ends, saving time and effort and effectively improving machining efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the valve core structure to be processed in this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the sliding cylinder in this utility model;

[0014] Figure 4 This is a cross-sectional structural diagram of the column in this utility model.

[0015] 1. Base; 2. First fixed seat; 3. Slide seat; 4. Second fixed seat; 5. First support plate; 6. Stand; 7. Second support plate; 8. Column; 9. Slide cylinder; 10. First pin sleeve; 11. Support rod; 12. Support column; 13. Slide plate; 14. Spring; 15. First lead screw; 16. Slide groove; 17. First pin hole; 18. Second pin hole; 19. Through hole; 20. Pin groove; 21. Limiting hole; 22. Screw sleeve; 23. Third support plate; 24. Support seat; 25. Second lead screw; 26. Pressure plate; 27. Fastening nut; 28. Tightening nut; 29. ​​Opening groove; 30. Positioning hole; 31. Sealing body; 32. Shaft head; 33. Pin rod. Detailed Implementation

[0016] Depend on Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the tooling for machining the keyway of the plug valve spindle includes a base 1, a first fixed seat 2, a slide 3, a second fixed seat 4, a clamping mechanism, a first support plate 5, a stand 6, a second support plate 7, a column 8, a slide cylinder 9, a first pin sleeve 10, a support rod 11, a support column 12, a slide plate 13, a spring 14, and a first lead screw 15. The base 1 has a sliding groove 16 and a row of first pin holes 17 located above the sliding groove 16. Pairs of first fixed seats 2 are fixedly installed on the left and right sides of the front end of the base 1. The slide 3 has second pin holes 18 corresponding to the first pin holes 17. Pairs of second fixed seats 4 are fixedly installed on the left and right sides of the rear end of the slide 3. The slide 3 is slidably mounted. The fixture is fixed to the machine tool by means of a first fixed seat 2 and a second fixed seat 4, within the groove 16 of the base 1 and by means of a pin 33 passing through the first pin hole 17 and the second pin hole 18. The clamping mechanism includes a third support plate 23, a support 24, a second lead screw 25, a pressure plate 26, and fastening nuts 27. The support 24 is fixedly installed on the third support plate 23 and is concave. The pair of second lead screws 25 are respectively fixedly installed on both sides of the support 24. The pressure plate 26 has an opening slot 29 corresponding to the pair of second lead screws 25. The pressure plate 26 is placed on the pair of second lead screws 25 through the opening slot 29. The pair of fastening nuts 27 are respectively threaded to the second lead screws 25. The pair of clamping mechanisms are respectively connected to the third support plate 23, the first fixed seat 24, the second fixed seat 25, the second fixed seat 25, the third fixed seat 26, the second fixed seat 27, the third fixed seat 26, the second fixed seat 27, the third fixed seat 26, the second fixed seat 27, the second fixed seat 27, the second fixed seat 25, the third fixed seat 26, the second fixed seat 27, the second fixed seat 25, the third fixed seat 26, the second fixed seat 27, the second fixed seat 25, the second ...5, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, the second fixed seat 25, Support plate 23 is fixedly installed on base 1 and slide 3. The valve core shaft head 32 is fixed by the paired clamping mechanism. The first support plate 5 is fixedly installed on slide 3 and is located at the front end of the clamping mechanism on slide 3. The paired uprights 6 are respectively fixedly installed on the first support plate 5. The second support plate 7 is fixedly installed on the paired uprights 6. The column 8 is fixedly installed on the second support plate 7. The column 8 is hollow cylindrical. The second support plate 7 has a through hole 19 corresponding to the hollow part of the column 8. The slide cylinder 9 is slidably installed in the column 8. The slide cylinder 9 has a pin groove 20. The column 8 has a pin hole corresponding to the pin groove 20. The first pin sleeve 10 is inserted into the pin hole of the column 8. The front end of the first pin sleeve 10 is located at... Within the pin groove 20, the first pin sleeve 10 limits the slide cylinder 9 within the column 8. The support rod 11 is fixedly installed on the slide cylinder 9, and the paired support columns 12 are respectively fixedly installed at both ends of the support rod 11. The support rod 11 effectively supports and fixes the bottom plane of the valve core sealing body 31. A limiting hole 21 is provided on the lower end face of the slide cylinder 9. The sliding plate 13 is slidably installed within the column 8, and the sliding plate 13 is located below the slide cylinder 9. The spring 14 is placed between the sliding plate 13 and the slide cylinder 9. The lower end of the spring 14 is fixedly connected to the sliding plate 13, and the upper end of the spring 14 is placed within the limiting hole 21 of the slide cylinder 9 and fixedly connected to the slide cylinder 9. A threaded sleeve 22 is fixedly installed on the lower end face of the sliding plate 13. A positioning hole 30 is provided on the first support plate 5.The lower end of the first lead screw 15 is rotatably positioned within the positioning hole 30, and the upper end of the first lead screw 15 is threadedly connected to the threaded sleeve 22 on the slide plate 13. A tightening nut 28 is fixedly mounted on the first lead screw 15. By rotating the tightening nut 28, the slide plate 13 can be moved up and down using the first lead screw 15, thus adjusting the elastic support force of the slide cylinder 9.

Claims

1. A tooling for machining the keyway on the valve core of a plug valve, characterized in that: The system includes a base (1), a first fixed seat (2), a slide (3), a second fixed seat (4), a clamping mechanism, a first support plate (5), a stand (6), a second support plate (7), a column (8), a slide cylinder (9), a first pin sleeve (10), a support rod (11), a support column (12), a slide plate (13), a spring (14), and a first lead screw (15). The base (1) has a sliding groove (16) and a row of first pin holes (17) located above the sliding groove (16). Pairs of first fixed seats (2) are fixedly installed on the left and right sides of the front end of the base (1). The slide (3) has a corresponding... The second pin hole (18) corresponds to the first pin hole (17). The pair of second fixed seats (4) are respectively fixedly installed on the left and right sides of the rear end of the slide (3). The slide (3) is slidably installed in the slide groove (16) of the base (1) and fixed together by the pin (33) passing through the first pin hole (17) and the second pin hole (18). The pair of clamping mechanisms are respectively fixedly installed on the base (1) and the slide (3). The first support plate (5) is fixedly installed on the slide (3) and located at the front end of the clamping mechanism on the slide (3). The pair of upright seats (6) are respectively fixedly installed on the first support plate (5). The second support plate (7) is fixedly installed on the pair of upright seats (6). The column (8) is fixedly installed on the second support plate (7). The column (8) is hollow cylindrical. The second support plate (7) has a through hole (19) corresponding to the hollow part of the column (8). The sliding cylinder (9) is slidably installed inside the column (8). The sliding cylinder (9) has a pin groove (20). The column (8) has a pin hole corresponding to the pin groove (20). The first pin sleeve (10) is inserted into the pin hole of the column (8). The front end of the first pin sleeve (10) is located in the pin groove (20). The support rod (11) is fixedly installed on the sliding cylinder (9). The paired support columns (12) are respectively fixedly installed at both ends of the support rod (11). The lower end face of the slide cylinder (9) is provided with a limiting hole (21). The slide plate (13) is slidably installed in the column (8) and the slide plate (13) is located below the slide cylinder (9). The spring (14) is placed between the slide plate (13) and the slide cylinder (9). The lower end of the spring (14) is fixedly connected to the slide plate (13). The upper end of the spring (14) is placed in the limiting hole (21) of the slide cylinder (9) and is fixedly connected to the slide cylinder (9). The lower end face of the slide plate (13) is fixedly installed with a screw sleeve (22). The lower end of the first lead screw (15) is rotatably installed on the first support plate (5). The upper end of the first lead screw (15) is threadedly connected to the screw sleeve (22) on the slide plate (13).

2. The tooling for machining the keyway of the plug valve spindle head according to claim 1, characterized in that: The clamping mechanism includes a third support plate (23), a bracket (24), a second lead screw (25), a pressure plate (26), and a fastening nut (27). The bracket (24) is fixedly installed on the third support plate (23). The bracket (24) is concave. The pair of second lead screws (25) are fixedly installed on both sides of the bracket (24). The pressure plate (26) has an opening slot (29) corresponding to the pair of second lead screws (25). The pressure plate (26) is placed on the pair of second lead screws (25) through the opening slot (29). The pair of fastening nuts (27) are threadedly connected to the second lead screws (25). The pair of clamping mechanisms are fixedly installed on the base (1) and the slide (3) through the third support plate (23).

3. The tooling for machining the keyway of the valve core of the plug valve according to claim 1 or 2, characterized in that: A tightening cap (28) is fixedly installed on the first lead screw (15).

4. The tooling for machining the keyway of the valve core of the plug valve according to claim 1 or 2, characterized in that: The first support plate (5) has a positioning hole (30), and the lower end of the first lead screw (15) is placed in the positioning hole (30).

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