A self-driven high-precision linear machining tool for plug valves

Abstract

The present invention provides a self-propelled, high-precision linear machining tool for plug valves, belonging to the field of plug valves. It solves the problem of plug valve machining tools being unable to maintain a straight path during the cutting process, resulting in substandard product precision and a high defect rate. A self-propelled, high-precision linear machining tool for plug valves includes a machining device for machining the inner and outer cones of the plug valve and a control unit for controlling the operation of the machining device. The machining tool also includes a fixed base for mounting the machining device. The machining device is further composed of a machining mechanism with a cutter body and a precision adjustment mechanism located on the machining mechanism for adjusting the machining accuracy of the machining mechanism. The present invention has the advantage of high-precision linear sliding.

Description

Technical Field

[0001] The present invention belongs to the field of plug valves and relates to a plug valve processing tool, in particular to a self-driven high-precision linear processing tool for plug valves. Background Art

[0002] The plug valve is the earliest valve adopted by people in history. Due to its simple structure, quick opening and closing, easy operation and low fluid resistance, it is still widely used today. It is currently mainly used in low pressure, small diameter, low medium temperature, and when the medium contains suspended matter and crystalline particles. The plug valve is a fast-opening straight-through valve. Since the movement between the rotary sealing surfaces has a wiping effect, it can completely prevent contact with the flowing medium when fully open, so it can usually also be used for media with suspended particles. Oil-sealed plug valves can be divided into conventional oil-lubricated plug valves and pressure-balanced plug valves. Special grease is injected from the top of the plug body between the valve body tapered hole and the plug body to form an oil film to reduce the valve opening and closing torque, thereby improving sealing and service life.

[0003] In the existing plug valves on the market, the mating surface between the plug valve core and the plug valve body is a conical surface, and the processing and mating accuracy requirements of the plug valve core and the plug valve body are very high. Ordinary CNC lathes are installed with guide rails, and there is a gap on the guide rails, which makes it impossible for the tool to maintain a straight line during the cutting process, resulting in the product precision not meeting the requirements and a high defective rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a gas self-closing valve and a manufacturing mold thereof in order to solve the above problems existing in the prior art.

[0005] The objectives of the present invention can be achieved through the following technical solutions: a self-driven high-precision linear machining tool for a plug valve, characterized in that the machining tool includes a machining device for machining the inner and outer cones of the plug valve and a control unit for controlling the operation of the machining device. The machining tool also includes a fixed base for mounting the machining device. The machining device is composed of a machining mechanism with a tool body and a precision adjustment mechanism located on the machining mechanism for adjusting the machining accuracy of the machining mechanism.

[0006] In the above-mentioned self-driven high-precision linear processing tool for a plug valve, the fixed base is provided with a guide platform for guiding the movement of the processing mechanism.

[0007] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, a fixed plate is installed at one end of the fixed machine base, and a driving device for controlling the operation of the machining mechanism is provided on the fixed plate.

[0008] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, the driving device is a servo motor.

[0009] In the above-mentioned self-driven high-precision linear processing tool for a plug valve, the processing mechanism includes a tool body mounting seat for mounting the tool body and guiding it through a guide table. The rear end of the tool body mounting seat is connected to a connecting shaft for transmission. The driving shaft of the driving device and the connecting shaft are connected through a transmission rod. The driving device controls the rotation of the transmission rod, thereby driving the connecting shaft, the tool body mounting seat and the tool body located on the tool body mounting seat to move linearly along the guide table.

[0010] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, the transmission rod is a screw rod.

[0011] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, the precision adjustment mechanism includes a fixed cover located on the guide platform, and a plurality of groups of rollers that cooperate with the tool body mounting seat are provided in the fixed cover. A roller shaft is passed through each group of the rollers, and a flat groove is provided on the top surface of the roller shaft. The fixed cover is provided with a plurality of adjustment bolts for adjusting the radial pressure of the corresponding roller shaft on the roller.

[0012] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, the precision adjustment mechanism further includes a fixing bolt for connecting the fixing cover and the guide platform.

[0013] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, the control system is a PLC control system.

[0014] In the above-mentioned self-driven high-precision linear machining tool for a plug valve, the tool body mounting seat is a triangular structure.

[0015] Compared with the prior art, the self-driven high-precision linear machining tool for the plug valve has the advantages of achieving the highest precision in the clearance between the tool body mounting seat and the guide table and satisfying high-precision linear sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the self-driven high-precision linear processing cutter for the plug valve.

[0017] Figure 2 This is a schematic diagram of the self-driven high-precision linear machining tool for the plug valve.

[0018] In the figure, 1. machining tool; 2. machining device; 3. control unit; 4. fixed base; 5. cutter body; 6. machining mechanism; 7. precision adjustment mechanism; 8. guide table; 9. fixed plate; 10. driving device; 11. cutter body mounting seat; 12. connecting shaft; 13. transmission rod; 14. fixed cover; 15. roller; 16. roller shaft; 17. flat groove; 18. adjusting bolt; 19. fixing bolt. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figure 1 、 Figure 2 As shown, the self-driven high-precision linear machining tool 1 for the plug valve includes a machining device 2 for machining the inner and outer cones of the plug valve and a control unit 3 for controlling the operation of the machining device 2. The machining tool 1 also includes a fixed base 4 for mounting the machining device 2. The machining device 2 is composed of a machining mechanism 6 with a tool body 5 and a precision adjustment mechanism 7 located on the machining mechanism 6 for adjusting the machining precision of the machining mechanism 6.

[0021] To be more specific, the fixed base 4 has a guide platform 8 for guiding the movement of the processing mechanism 6.

[0022] To be more specific, a fixing plate 9 is installed at one end of the fixed machine base, and a driving device 10 for controlling the operation of the processing mechanism 6 is provided on the fixing plate 9 .

[0023] In further detail, the driving device 10 is a servo motor.

[0024] To be more specific, the processing mechanism 6 includes a tool body mounting seat 11 for mounting the tool body and guiding it through the guide platform 8. The rear end of the tool body mounting seat 11 is connected to a connecting shaft 12 for transmission. The driving shaft of the driving device 10 and the connecting shaft 12 are connected through a transmission rod 13. The driving device 10 controls the rotation of the transmission rod 13, thereby driving the connecting shaft 12, the tool body mounting seat 11 and the tool body 5 located on the tool body mounting seat 11 to move linearly along the guide platform 8.

[0025] To be more specific, the transmission rod 13 is a screw rod.

[0026] To elaborate further, the precision adjustment mechanism 7 includes a fixed cover 14 located on the guide platform 8, and a plurality of groups of rollers 15 are provided in the fixed cover 14 and cooperate with the cutter body mounting seat 11. Each group of rollers 15 is penetrated by a roller shaft 16, and a flat groove 17 is provided on the top surface of the roller shaft 16. The fixed cover 14 is provided with a plurality of adjusting bolts 18 for adjusting the radial pressure of the corresponding roller shaft 16 on the roller 15. The cutter body mounting seat 11 is triangular in shape, and the roller 15 above can be adjusted up and down to apply a downward radial force to make the cutter body mounting seat 11 and the guide platform 8 precisely ground, so that the gap between the cutter body mounting seat 11 and the guide platform 8 reaches the highest precision and meets high-precision linear sliding.

[0027] In further detail, the precision adjustment mechanism 7 further includes fixing bolts 19 for connecting the fixing cover 14 and the guide platform 8 .

[0028] To be more specific, the control unit 3 is a PLC control system.

[0029] In further detail, the blade mounting seat 11 is a triangular structure, which improves stability and prevents movement.

[0030] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0031] Although this document frequently uses terms such as machining tool 1, machining device 2, control unit 3, fixed base 4, cutter body 5, machining mechanism 6, precision adjustment mechanism 7, guide platform 8, fixed plate 9, drive device 10, cutter body mounting seat 11, connecting shaft 12, transmission rod 13, fixed cover 14, roller 15, roller shaft 16, flat groove 17, adjusting bolt 18, and fixing bolt 19, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations would be contrary to the spirit of the present invention.

Claims

1. A self-propelled high-precision linear machining tool for plug valves, characterized in that: The machining tool (1) comprises a machining device (2) for machining the inner and outer cones of a plug valve and a control unit (3) for controlling the operation of the machining device (2). The machining tool (1) also comprises a fixed base (4) for mounting the machining device (2). The machining device (2) is further composed of a machining mechanism (6) with a cutter body (5) and a precision adjustment mechanism (7) located on the machining mechanism (6) for adjusting the machining precision of the machining mechanism (6). The fixed base (4) is provided with a guide table (8) for guiding the machining mechanism (6). A fixed plate (9) is installed at one end of the fixed base (4). A driving device (10) for controlling the operation of the machining mechanism (6) is provided on the fixed plate (9). The machining mechanism (6) comprises a cutter body mounting seat (11) for mounting the cutter body and guiding the cutter body through the guide table (8). The rear end of the cutter body mounting seat (11) is connected to a connecting shaft (12). The driving shaft of the driving device (10) is connected to the connecting shaft. (12) are connected by a transmission rod (13), and the transmission rod (13) is controlled to rotate by the driving device (10), thereby driving the connecting shaft (12), the cutter body mounting seat (11) and the cutter body (5) located on the cutter body mounting seat (11) to move in a straight line along the guide platform (8). The precision adjustment mechanism (7) includes a fixed cover (14) located on the guide platform (8), and the fixed cover (14) is provided with a plurality of groups of rollers (15) matched with the cutter body mounting seat (11). Each group of the rollers (15) is provided with a roller shaft (16), and the top surface of the roller shaft (16) is provided with a flat groove (17). The fixed cover (14) is provided with a plurality of adjusting bolts (18) for adjusting the radial pressure of the corresponding roller shaft (16) on the roller (15). The precision adjustment mechanism (7) also includes a fixing bolt (19) for connecting the fixed cover (14) and the guide platform (8). The cutter body mounting seat (11) is a triangular structure.

2. The self-driven high-precision linear machining tool for a plug valve according to claim 1, characterized in that: The driving device (10) is a servo motor.

3. The self-driven high-precision linear machining tool for a plug valve according to claim 1, characterized in that: The transmission rod (13) is a screw rod.

4. The self-driven high-precision linear machining tool for a plug valve according to claim 1, characterized in that: The control unit (3) is a PLC control system.

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