A processing technology for a super-high pressure valve body

Abstract

The present application discloses a processing technology for a super-high pressure valve body, and the steps are as follows: S1: Prepare a blank of the super-high pressure valve body; S2: Grind the upper, lower, front and rear planes; S3: Machine the right end face, right welding groove, right straight channel, left end face, left welding groove and left straight channel; S4: Rough machine the middle threaded hole, first middle hole, second middle hole, third middle hole, seal surface surfacing groove and fourth middle hole; S5: Surfacing hard alloy on the seal surface; S6: Finish machine the middle threaded hole, first middle hole, second middle hole, third middle hole, seal surface and fourth middle hole; S7: Drill the right inclined channel and left inclined channel; S8: Machine the fixing hole; S9: Machine the threaded hole; S10: Lap the seal surface with the valve flap; S11: Inspect and laser print the identification by computer. The grinding machine includes a base, a supporting plate is lifted and lowered on the base, two connecting plates slide on the base, clamping plates are rotatably arranged on the two connecting plates, an installation plate is lifted and lowered on the base, and a grinding wheel is arranged on the installation plate. The present application helps to improve the grinding processing efficiency.

Description

Technical Field

[0001] This application relates to the field of valve body grinding, and particularly to a processing technology for a super high-pressure valve body. Background Art

[0002] In recent years, with the development of super high-pressure technology, super high-pressure valves have been widely used in fields such as polyethylene, EVA, isostatic pressing, artificial crystal, powder metallurgy, food pressure processing, water jet cutting, test devices, etc. The operating conditions of super high-pressure valves are extremely harsh, such as super high pressure, high temperature, corrosive media, cyclic load, impact load, high-frequency reciprocating motion, etc., and the performance requirements for valves are very high, such as pressure-bearing forgings with high strength and toughness, highly reliable dynamic and static seals, high-precision pressure or flow control, etc. The valve body is the pressure-bearing part of the super high-pressure valve and is directly connected to the pipeline. Super high-pressure media flow inside the super high-pressure valve body, and the high-pressure media is cut off by the closing member. Therefore, the blank and processing quality of the super high-pressure valve body determine the performance of the super high-pressure valve.

[0003] Refer to Figure 1 , there is currently a super high-pressure valve body 1, including a lower plane 101, a right welding groove 102, a right end face 103, a right straight channel 104, a right inclined channel 105, a right plane 106, a fixing hole 107, a threaded hole 108, an upper plane 109, a left plane 110, a middle threaded hole 111, a first middle hole 112, a second middle hole 113, a third middle hole 114, a sealing surface 115, a fourth middle hole 116, a left end face 117, a left welding groove 118, a left straight channel 119, a left inclined channel 120, a rear plane 121, and a front plane 122. The right welding groove 102, the right end face 103, the left end face 117, and the left welding groove 118 are butt-welded to the pipeline; the right straight channel 104, the right inclined channel 105, the third middle hole 114, the fourth middle hole 116, the left straight channel 119, and the left inclined channel 120 are used for the flow of super high-pressure media; the middle threaded hole 111 is used to connect the valve cover; the first middle hole 112 is used for the tool withdrawal of the middle threaded hole 111; the second middle hole 113 is used to set the packing; the sealing surface 115 realizes the sealing function of the valve after contacting the valve flap sealing surface; the fixing hole 107 is used to fix the super high-pressure valve body 1; the lower plane 101, the right plane 106, the upper plane 109, the left plane 110, the rear plane 121, and the front plane 122 are the outer shape surfaces.

[0004] During the machining process of the valve body, a blank of a hexahedron-shaped forged part is prepared, and then the lower plane, upper plane, rear plane, and front plane of the valve body are ground. Currently, the grinding machine usually clamps and fixes the blank of the valve body, and uses a grinding wheel to machine the machining surface. Since there are many machining surfaces, it is necessary to adjust the clamping direction of the blank to make the surface to be machined cooperate with the grinding wheel to achieve the grinding operation of each machining surface. Since there are four machining surfaces on the valve body that need to be ground, it is necessary for the staff to adjust the position of the blank of the valve body multiple times in the middle. During this process, it is necessary to release the clamping of the blank of the valve body by the tooling, and then clamp it again after adjusting the position, which is rather troublesome and the grinding processing efficiency is low. Summary of the Invention

[0005] In order to improve the grinding processing efficiency, the present application provides a processing technology for a super-high pressure valve body.

[0006] The processing technology for a super-high pressure valve body provided by the present application adopts the following technical solutions:

[0007] A processing technology for a super-high pressure valve body includes the following steps:

[0008] S1: Prepare a blank of a super-high pressure valve body, and the blank is a hexahedron-shaped forged part;

[0009] S2: Use a grinding machine to grind the lower plane, upper plane, rear plane, and front plane of the high-pressure valve body. The height of the lower plane and the upper plane is controlled within ±0.1 mm, and the thickness of the rear plane and the front plane is controlled within ±0.1 mm;

[0010] The grinding machine includes a base, a support plate for supporting the blank of the valve body is arranged on the base in a lifting manner, connecting plates are slidably arranged on both sides of the base relative to the support plate, clamping plates are rotatably arranged on one side of the two connecting plates close to each other, a mounting plate is arranged on the base in a lifting manner, and a grinding wheel is rotatably arranged on the mounting plate;

[0011] S3: Machine the right end face, right welding groove, right straight channel, left end face, left welding groove, and left straight channel on a lathe. After machining, a right plane and a left plane are formed, and the width of the right plane and the left plane is controlled within ±0.1 mm;

[0012] S4: Batch rough machine the middle threaded hole, first middle hole, second middle hole, third middle hole, sealing surface surfacing groove, and fourth middle hole on a machining center; a machining allowance of 1.5 - 2 mm is left for the middle threaded hole, first middle hole, second middle hole, third middle hole, and fourth middle hole, and the depth of the sealing surface 115 surfacing groove is 3 mm;

[0013] S5: Surfacing hard alloy on the sealing surface, preferably Stellite hard alloy;

[0014] S6: Finish machining the medium threaded hole, the first middle hole, the second middle hole, the third middle hole, the sealing surface and the fourth middle hole in batch on the machining center; after batch finish machining, the roughness of the medium threaded hole, the first middle hole, the third middle hole and the fourth middle hole is controlled within Ra1.6 - Ra3.2, and the roughness of the second middle hole and the sealing surface is controlled within Ra0.4 - Ra0.8; the coaxiality of the medium threaded hole, the second middle hole and the sealing surface is controlled within φ0.001;

[0015] S7: Drill the right inclined channel and the left inclined channel.

[0016] S8: Machine the fixing holes.

[0017] S9: Machine the threaded holes.

[0018] S10: Lap the sealing surface with the valve disc.

[0019] S11: Inspect and laser print the identification by computer.

[0020] By adopting the above technical solution, during the grinding operation, first place the valve body blank on the supporting plate, then the two connecting plates move towards each other, driving the two clamping plates to clamp the valve body, and the clamping surfaces of the two clamping plates on the valve body are the left plane and the right plane of the valve body. Then the grinding wheel descends, and the grinding operation can be carried out on the valve body blank; after grinding is completed, the supporting plate descends, the two clamping plates rotate and drive the valve body blank to rotate 90 degrees at the same time, so that another processing surface of the valve body blank is located on the upper side. Then the supporting plate rises again to support the blank, and the grinding wheel operates again. Repeating the above actions can realize the grinding operation on the upper, lower, front and rear four planes of the valve body blank. In this way, without disassembling and assembling the valve body blank, the processing of multiple planes can be realized, and the degree of automation of processing is higher, which helps to improve the processing efficiency.

[0021] Preferably, an installation seat is arranged on the base along the vertical direction. A lead screw is rotatably connected in the installation seat along the vertical direction. A slide table is threadedly connected to the lead screw. The mounting plate is fixedly connected to the slide table. A first motor for driving the lead screw to rotate is arranged at the upper end of the installation seat. A second motor is installed on the mounting plate, and the output shaft of the second motor is coaxially fixed to the grinding wheel.

[0022] By adopting the above technical solution, the first motor drives the lead screw to rotate, the slide table moves up and down on the lead screw, driving the mounting plate to move up and down, realizing the lifting of the grinding wheel. When the second motor operates, it can drive the grinding wheel to rotate at high speed for grinding operation.

[0023] Preferably, two driving cylinders are oppositely arranged on the base. The two driving cylinders correspond to the two connecting plates one by one. The piston rod of the driving cylinder is fixedly connected to the corresponding connecting plate; a rotary cylinder is installed on the connecting plate, and the output shaft of the rotary cylinder is fixedly connected to the corresponding clamping plate.

[0024] By adopting the above technical solution, after the valve body blank is placed on the supporting plate, the two driving cylinders operate to drive the two clamping plates to move towards each other and clamp the valve body blank, and then the grinding operation can be carried out. After one plane is ground, the supporting plate descends, the two rotating cylinders operate synchronously to drive the valve body blank to rotate 90 degrees, the supporting plate rises again to support the valve body blank, and then the subsequent grinding process can be carried out.

[0025] Preferably, an installation groove is formed in the base, a guiding sleeve is arranged on the lower side of the supporting plate, a guiding rod is arranged vertically in the installation groove of the base, the guiding sleeve and the guiding rod are inserted and slidably matched, a compression spring is sleeved on the periphery of the guiding rod, one end of the compression spring is connected to the bottom wall of the installation groove, and the other end of the compression spring is connected to the lower end surface of the guiding sleeve; a fixing block is integrally formed on the lower side of the supporting plate, a receiving groove is formed in the fixing block, a sliding block is slidably arranged in the receiving groove of the fixing block, the sliding block slides horizontally, first ratchet teeth are distributed vertically on the side surface of the sliding block, a vertical plate is fixedly connected to the middle position of the receiving groove of the fixing block, a plugging column is arranged on the side of the sliding block away from the first ratchet teeth, the plugging column is inserted and slidably matched with the vertical plate, a abutting spring is sleeved on the plugging column, one end of the abutting spring is connected to the vertical plate, and the other end of the abutting spring is connected to the sliding block; a one-way plate is arranged vertically in the installation groove of the base, second ratchet teeth are arranged on the side of the one-way plate close to the sliding block, and the first ratchet teeth and the second ratchet teeth are meshed and matched; a driving member for driving the sliding block to slide is arranged in the base, and a driving assembly for driving the fixing block to descend is also arranged in the base.

[0026] By adopting the above technical solution, in the initial state, under the action of the compression spring, the supporting plate is in the rising state, and due to the cooperation of the first ratchet teeth and the second ratchet teeth, the supporting plate cannot descend. After the first grinding operation on the valve body blank is completed, the driving member drives the sliding block to slide, so that the first ratchet teeth and the second ratchet teeth are disengaged. At this time, the supporting plate can descend, and the driving assembly drives the fixing block to descend, that is, drives the supporting plate to descend to avoid the rotation of the valve body blank; when the rotation of the valve body blank is completed, both the driving member and the driving assembly stop operating, and under the action of the compression spring, the supporting plate rises until it abuts against the valve body blank, and then the subsequent grinding operation can be carried out.

[0027] Preferably, the driving member is set as a sliding rod, the sliding rod is slidably arranged horizontally on the one-way plate, a universal ball is installed at one end of the sliding rod close to the sliding block, a sliding groove is formed vertically on the side of the sliding block close to the one-way plate, and the universal ball is located in the sliding groove and forms a rolling fit with the sliding groove.

[0028] By adopting the above technical solution, after the grinding operation on one of the surfaces is completed, the sliding rod slides. Under the abutment of the universal ball and the sliding block, the sliding block will be driven to slide away from the one-way plate, causing the first ratchet tooth and the second ratchet tooth to disengage. Subsequently, the driving assembly drives the fixed block to descend. At this time, the universal ball rolls in the sliding groove.

[0029] Preferably, the lower end of the screw rod extends into the installation groove. A first bevel gear is coaxially fixed at the lower end of the screw rod. A first connecting shaft is rotatably connected to the base within the installation groove. A second bevel gear is coaxially fixed on the first connecting shaft. The second bevel gear meshes with the first bevel gear. A first driving wheel is also coaxially fixed on the first connecting shaft. A driving rod is eccentrically arranged on the first driving wheel. One end of the sliding rod away from the sliding block is rotatably connected to a second driving wheel. An arc-shaped groove is formed on the second driving wheel. The center of curvature of the arc-shaped groove is located at the center of the second driving wheel. The driving rod extends into the arc-shaped groove and is slidably matched with the arc-shaped groove. The bottom surface of the arc-shaped groove is in the shape of a wedge surface. One end of the arc-shaped groove is the highest end, and the other end is the lowest end. In the initial state, the driving rod is located at the lowest end of the arc-shaped groove. When the screw rod rotates to drive the mounting plate to rise, the first driving wheel rotates, and the driving rod moves towards the highest end of the arc-shaped groove, driving the second driving wheel to move horizontally; a sliding groove is formed on the one-way plate in the horizontal direction. The sliding rod is slidably matched with the sliding groove. An abutting plate is integrally formed on the circumferential side of the sliding rod. An annular groove is formed on the inner wall of the sliding groove where the one-way plate is located. The abutting plate slides in the annular groove. A return spring is sleeved on the sliding rod. One end of the return spring is connected to the inner wall of the annular groove, and the other end of the return spring is connected to the abutting plate.

[0030] By adopting the above technical solution, after the grinding operation is completed, the screw rod rotates to drive the mounting plate to rise. At this time, the first bevel gear rotates to drive the second bevel gear to rotate. The second bevel gear drives the first driving wheel to rotate through the first connecting shaft. The driving rod of the first driving wheel moves from the lowest end to the highest end of the arc-shaped groove of the second driving wheel, and then drives the second driving wheel to rotate synchronously. When the driving rod slides in the arc-shaped groove, the second driving wheel moves horizontally, that is, drives the sliding rod to slide in the sliding groove. The sliding of the sliding rod can drive the sliding block to slide, causing the first ratchet tooth and the second ratchet tooth to disengage; when the screw rod stops rotating, under the action of the return spring, the sliding rod resets, that is, the sliding block resets, and at the same time, the driving rod resets to the lowest end of the arc-shaped groove; when the screw rod rotates to drive the mounting plate to descend, that is, when the screw rod rotates in reverse, at this time, the first driving wheel directly drives the second driving wheel to rotate through the driving rod, and the driving rod does not slide in the arc-shaped groove.

[0031] Preferably, the driving assembly includes a rack and a driving gear. The rack slides in the receiving groove of the fixed block. One end of the insertion column away from the sliding block is fixedly connected to the rack. The driving gear is rotatably arranged in the installation groove. When the sliding block slides, the sliding block drives the rack to slide through the insertion column, so that the rack meshes with the driving gear.

[0032] By adopting the above technical solution, when the sliding rod drives the sliding block to slide away from the one-way plate, the rack slides accordingly, and the rack meshes with the driving gear. The driving gear rotates, and the fixed block can be driven to descend through the rack. When the lead screw stops rotating, the sliding block drives the rack to reset, and the rack and the driving gear are disengaged.

[0033] Preferably, a second connecting shaft is rotatably connected in the installation groove of the base. A third bevel gear and a first pulley are coaxially fixed on the second connecting shaft. The third bevel gear meshes with the first bevel gear. A third connecting shaft is also rotatably connected in the installation groove of the base. A second pulley and a third pulley are coaxially fixed on the third connecting shaft. The first pulley and the second pulley are connected by a first belt. A fourth connecting shaft is also rotatably connected in the installation groove of the base. A fourth pulley and a fifth pulley are coaxially fixed on the fourth connecting shaft. The third pulley and the fourth pulley are connected by a second belt. A fifth connecting shaft is also rotatably connected in the installation groove of the base. A sixth pulley is coaxially fixed on the fifth connecting shaft. The fifth pulley and the sixth pulley are connected by a third belt. The driving gear is coaxially fixed on the fifth connecting shaft.

[0034] By adopting the above technical solution, when the lead screw drives the mounting plate to rise, the lead screw rotates and drives the first bevel gear to rotate. The first bevel gear simultaneously drives the third bevel gear to rotate. The third bevel gear drives the first pulley to rotate. The first pulley drives the second pulley to rotate through the first belt. The second pulley drives the third pulley to rotate through the third connecting shaft. The third pulley drives the fourth pulley to rotate through the second belt. The fourth pulley drives the fifth pulley to rotate through the fourth connecting shaft. The fifth pulley drives the sixth pulley to rotate through the third belt. The sixth pulley drives the driving gear to rotate through the fifth connecting shaft. While the lead screw is rotating, the sliding rod drives the rack to slide and mesh with the driving gear. The driving gear drives the rack to move, and the descent of the supporting plate can be realized. When the lead screw rotates in reverse, the driving gear will also rotate, but at this time the sliding block and the rack are in the reset state, and the driving gear and the rack are not meshed.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. When using a grinding machine for grinding operations, the two clamping plates can drive the valve body blank to rotate, so that the grinding wheel can sequentially process the four processing surfaces of the valve body blank. There is no need for manual disassembly and assembly, that is, the processing automation degree is high, and the grinding processing efficiency is higher.

[0037] 2. Since the valve body blank is cuboid-shaped, after rotation, its height from the base table will change. The supporting plate can adapt to the height of the bottom of the valve body blank through the compression spring, and with the cooperation of the first ratchet and the second ratchet, the supporting plate can be prevented from descending, that is, during the grinding process, the vertical movement of the valve body blank can be effectively prevented, the stability of the valve body blank can be improved, and the grinding effect can be guaranteed.

[0038] 3. After one grinding operation is completed, the lead screw rotates to drive the grinding wheel to rise. When the lead screw rotates, it drives the sliding rod to slide, and the sliding rod drives the sliding block to slide, causing the first ratchet and the second ratchet to disengage. At this time, the supporting plate can descend, and when the sliding block slides, it will drive the rack to slide. The rack meshes with the driving gear, and when the lead screw rotates, it will drive the driving gear to rotate. The driving gear drives the supporting plate to descend through the rack. During this process, the two clamping plates drive the valve body blank to rotate 90 degrees. When the lead screw stops rotating, the sliding rod, the sliding block and the rack reset. At this time, under the action of the compression spring, the supporting plate rises to support the valve body blank. Description of the Drawings

[0039] Figure 1 It is a schematic structural diagram of a super-high pressure valve body;

[0040] Figure 2 It is a flow block diagram of the processing technology of the super-high pressure valve body in this application;

[0041] Figure 3 It is a schematic structural diagram of the overall structure of the grinding machine in the embodiment of this application;

[0042] Figure 4 It is a schematic sectional view of the grinding machine in the embodiment of this application, mainly showing the structures of the guide sleeve and the guide rod;

[0043] Figure 5 It is a schematic sectional view of the grinding machine in the embodiment of this application;

[0044] Figure 6 It is a schematic partial structure diagram of the grinding machine in the embodiment of this application, mainly showing the structures of the first ratchet and the second ratchet;

[0045] Figure 7 It is a schematic partial structure diagram of the grinding machine in the embodiment of this application, mainly showing the structure of the sliding groove;

[0046] Figure 8 It is a schematic partial structure diagram of the grinding machine in the embodiment of this application, mainly showing the structures of the first driving wheel and the second driving wheel;

[0047] Figure 9 It is a schematic partial structure diagram of the grinding machine in the embodiment of this application, mainly showing the driving principle of the driving gear.

[0048] Reference numerals: 1, ultra-high pressure valve body; 101, lower plane; 102, right welding groove; 103, right end face; 104, right straight channel; 105, right inclined channel; 106, right plane; 107, fixing hole; 108, threaded hole; 109, upper plane; 110, left plane; 111, middle threaded hole; 112, first middle hole; 113, second middle hole; 114, third middle hole; 115, sealing surface; 116, fourth middle hole; 117, left end face; 118, left welding groove; 119, left straight channel; 120, left inclined channel; 121, rear plane; 122, front plane; 2, base; 21, connecting plate; 22, clamping plate; 23, mounting plate; 231, second motor; 24, grinding wheel; 25, mounting seat; 251, first motor; 26, lead screw; 261, first bevel gear; 27, driving cylinder; 28, rotating cylinder; 3, supporting plate; 31, guiding sleeve; 4, mounting groove; 41, guiding rod; 42, compression spring; 5, fixing block; 51, receiving groove; 52, vertical plate; 6, sliding block; 61, first ratchet tooth; 62, inserting column; 63, abutting spring; 64, sliding groove; 7, one-way plate; 71, second ratchet tooth; 72, sliding groove; 73, annular groove; 8, driving assembly; 81, rack; 82, driving gear; 9, sliding rod; 91, abutting plate; 92, reset spring; 93, universal ball; 94, second driving wheel; 941, arc groove; 20, first connecting shaft; 201, second bevel gear; 202, first driving wheel; 2021, driving rod; 30, second connecting shaft; 301, third bevel gear; 302, first belt pulley; 40, third connecting shaft; 401, second belt pulley; 402, third belt pulley; 50, fourth connecting shaft; 501, fourth belt pulley; 502, fifth belt pulley; 60, fifth connecting shaft; 601, sixth belt pulley. Detailed implementation manners

[0049] The following further elaborates on this application Figures 1-9 in detail with reference to the appended drawings.

[0050] The embodiment of this application discloses a processing technology for an ultra-high pressure valve body.

[0051] Referring to Figure 1 and Figure 2 , the processing technology for the ultra-high pressure valve body includes the following steps:

[0052] S1: Prepare the blank of the ultra-high pressure valve body 1, and the blank is a hexahedron-shaped forged part.

[0053] S2: Grind the lower plane 101, upper plane 109, rear plane 121 and front plane 122 of the ultra-high pressure valve body 1 on a grinding machine. The height of the lower plane 101 and upper plane 109 is controlled within ±0.1 mm, and the thickness of the rear plane 121 and front plane 122 is controlled within ±0.1 mm.

[0054] S3: Machine the right end face 103, right welding groove 102, right straight channel 104, left end face 117, left welding groove 118 and left straight channel 119 on a lathe. After machining, a right plane 106 and a left plane 110 are formed, and the width of the right plane 106 and left plane 110 is controlled within ±0.1 mm.

[0055] S4: Rough machine the middle threaded hole 111, first middle hole 112, second middle hole 113, third middle hole 114, surfacing groove of the sealing surface 115 and fourth middle hole 116 in batch on a machining center. A machining allowance of 1.5 - 2 mm is left for the middle threaded hole 111, first middle hole 112, second middle hole 113, third middle hole 114 and fourth middle hole 116, and the depth of the surfacing groove of the sealing surface 115 is 3 mm.

[0056] S5: Surfacing hard alloy on the sealing surface 115, preferably Stellite hard alloy.

[0057] S6: Finish machine the middle threaded hole 111, first middle hole 112, second middle hole 113, third middle hole 114, sealing surface 115 and fourth middle hole 116 in batch on a machining center. After batch finish machining, the roughness of the middle threaded hole 111, first middle hole 112, third middle hole 114 and fourth middle hole 116 is controlled within Ra1.6 - Ra3.2, and the roughness of the second middle hole 113 and sealing surface 115 is controlled within Ra0.4 - Ra0.8. The coaxiality of the middle threaded hole 111, second middle hole 113 and sealing surface 115 is controlled within φ0.001.

[0058] S7: Drill the right inclined channel 105 and left inclined channel 120.

[0059] S8: Machine the fixing hole 107.

[0060] S9: Machine the threaded hole 108.

[0061] S10: Lap the sealing surface 115 with the valve flap.

[0062] S11: Inspect and laser print the identification by computer.

[0063] Refer to Figure 3, in step S2, the grinding machine includes a base 2, on which a supporting plate 3 for supporting the valve body blank is arranged in a lifting manner. On both sides of the supporting plate 3 of the base 2, connecting plates 21 are slidably arranged. On one side of the two connecting plates 21 close to each other, clamping plates 22 are rotatably arranged. Above the supporting plate 3 of the base 2, a mounting plate 23 is arranged in a lifting manner, and a grinding wheel 24 is rotatably arranged on the mounting plate 23.

[0064] When performing grinding operations, place the valve body blank on the supporting plate 3. Then, the two connecting plates 21 move towards each other, and the two clamping plates 22 clamp and fix the valve body blank. The clamping surfaces of the two clamping plates 22 on the valve body blank are the left plane and the right plane. Then, the grinding wheel 24 descends, and the grinding operation can be realized. After grinding is completed, the supporting plate 3 descends, and the two clamping plates 22 rotate simultaneously, driving the valve body blank to rotate 90 degrees, so that another processing surface of the valve body blank is located on the upper side. Then, the supporting plate 3 ascends to support the valve body blank and prevent the valve body blank from moving vertically during the grinding process. Repeat the above actions to realize the grinding operations on the four upper, lower, front, and rear planes of the valve body blank. In this way, it is not necessary to manually disassemble and assemble the valve body blank midway, with a high degree of automation and helping to improve the efficiency of grinding processing.

[0065] On the base 2, a mounting seat 25 is installed in the vertical direction. A lead screw 26 is rotatably connected inside the mounting seat 25. The lead screw 26 is arranged vertically. A slide table is threadedly connected to the lead screw 26, and the mounting plate 23 is fixedly connected to the slide table. At the upper end of the mounting seat 25, a first motor 251 is fixedly installed, and the output shaft of the first motor 251 is fixedly connected to the upper end of the lead screw 26. A second motor 231 is installed on the mounting plate 23, and the output shaft of the second motor 231 is fixedly coaxial with the grinding wheel 24. When the first motor 251 operates, it drives the lead screw 26 to rotate. The lead screw 26 drives the slide table to move up and down, that is, drives the mounting plate 23 to move up and down, realizing the lifting of the grinding wheel 24. When the second motor 231 operates, the rotation of the grinding wheel 24 is realized.

[0066] Two driving cylinders 27 are installed on the base 2. The two driving cylinders 27 are arranged oppositely and are located on both sides of the supporting plate 3. The two connecting plates 21 and the two driving cylinders 27 correspond one by one. The connecting plate 21 is fixedly connected to the end of the piston rod of the corresponding driving cylinder 27. A rotary cylinder 28 is installed on the connecting plate 21, and the output shaft of the rotary cylinder 28 is fixedly connected to the corresponding clamping plate 22. When the two driving cylinders 27 operate, they drive the two clamping plates 22 to move towards each other, and the valve body blank can be clamped. When the two rotary cylinders 28 operate synchronously, the valve body blank can be driven to rotate.

[0067] Refer to Figure 3 and Figure 4, an installation groove 4 is formed in the base 2. A guiding sleeve 31 is fixedly connected to the lower side of the supporting plate 3. There are four guiding sleeves 31, which are distributed at the four corners of the supporting plate 3. A guiding rod 41 is fixedly connected in the installation groove 4 of the base 2. The guiding rod 41 is vertically arranged. There are four guiding rods 41, and they correspond to the guiding sleeves 31 one by one. The guiding sleeve 31 and the guiding rod 41 are inserted and slidably matched. A compression spring 42 is sleeved on the circumferential side of the guiding rod 41. The compression spring 42 is vertically arranged. One end of the compression spring 42 is connected to the bottom wall of the installation groove 4, and the other end of the compression spring 42 is connected to the lower end surface of the guiding sleeve 31. Under the cooperation of the guiding sleeve 31 and the guiding rod 41, it plays a guiding role in the lifting of the supporting plate 3 and improves stability. Under the action of the compression spring 42, the supporting plate 3 rises to abut against the valve body blank.

[0068] Refer to Figure 3 , Figure 5 and Figure 6 , a fixing block 5 is integrally formed on the lower side of the supporting plate 3. The lower side of the fixing block 5 extends into the installation groove 4. A receiving groove 51 is formed through the fixing block 5. A sliding block 6 is slidably connected in the receiving groove 51 of the fixing block 5. The sliding block 6 slides horizontally. First ratchet teeth 61 are distributed along the vertical direction on the side of the sliding block 6. The first ratchet teeth 61 are inclined downward. A vertical plate 52 is fixedly connected to the middle position of the receiving groove 51 of the fixing block 5. A plugging column 62 is fixedly connected to the side of the sliding block 6 away from the first ratchet teeth 61. The plugging column 62 is inserted and slidably matched with the vertical plate 52. A abutting spring 63 is sleeved on the plugging column 62. One end of the abutting spring 63 is connected to the vertical plate 52, and the other end of the abutting spring 63 is connected to the sliding block 6. A one-way plate 7 is fixedly connected in the installation groove 4 of the base 2. The one-way plate 7 is vertically arranged. A second ratchet tooth 71 is provided on the side of the one-way plate 7 close to the sliding block 6. The second ratchet tooth 71 is inclined upward. The first ratchet teeth 61 and the second ratchet teeth 71 are meshed and matched. A driving member for driving the sliding block 6 to slide is arranged in the base 2, and a driving assembly 8 for driving the fixing block 5 to descend is also arranged in the base 2.

[0069] In the initial state, due to the action of the compression spring 42, the supporting plate 3 is in the rising state, and due to the cooperation of the first ratchet teeth 61 and the second ratchet teeth 71, the supporting plate 3 cannot descend, which can ensure the supporting effect of the supporting plate 3 and prevent the valve body blank from vertically moving during the grinding process. When the first grinding is completed, the driving member drives the sliding block 6 to slide to the side away from the one-way plate 7, and the first ratchet teeth 61 and the second ratchet teeth 71 are disengaged. At this time, the supporting plate 3 can descend, and the driving assembly 8 drives the fixing block 5 to descend again, that is, drives the supporting plate 3 to descend to avoid the rotation of the valve body blank. When the rotation of the valve body blank is completed, the driving member and the driving assembly 8 stop working, and the sliding block 6 resets. Under the action of the compression spring 42, the supporting plate 3 rises until it abuts against the valve body blank.

[0070] Referring to Figure 5 、 Figure 6 and Figure 7 , the driving member is set as the sliding rod 9. The sliding rod 9 is a square rod. A sliding groove 72 is horizontally formed on the one-way plate 7. The sliding rod 9 is slidably matched with the sliding groove 72. An abutting plate 91 is integrally formed on the circumferential side of the sliding rod 9. An annular groove 73 is further formed on the inner wall of the one-way plate 7 where the sliding groove 72 is located. The abutting plate 91 slides in the annular groove 73. A return spring 92 is sleeved on the sliding rod 9. One end of the return spring 92 is connected to the inner wall of the annular groove 73, and the other end of the return spring 92 abuts against the abutting plate 91; A universal ball 93 is installed at one end of the sliding rod 9 close to the sliding block 6. A sliding groove 64 is vertically formed on one side of the sliding block 6 close to the one-way plate 7. The universal ball 93 is located in the sliding groove 64 and forms a rolling fit with the sliding groove 64.

[0071] Referring to Figure 3 、 Figure 5 and Figure 8 , the lower end of the lead screw 26 extends into the installation groove 4. A first bevel gear 261 is coaxially fixed at the lower end of the lead screw 26. A first connecting shaft 20 is rotatably connected in the installation groove 4 of the base 2. A second bevel gear 201 is coaxially fixed on the first connecting shaft 20. The second bevel gear 201 meshes with the first bevel gear 261. A first driving wheel 202 is also coaxially fixed on the first connecting shaft 20. A driving rod 2021 is fixedly connected to one side of the first driving wheel 202 close to the one-way plate 7. The driving rod 2021 is eccentrically arranged with the first driving wheel 202. The other end of the sliding rod 9 away from the sliding block 6 is rotatably connected with a second driving wheel 94.

[0072] An arc-shaped groove 941 is formed on the second driving wheel 94. The center of curvature of the arc-shaped groove 941 is located at the center of the second driving wheel 94. The driving rod 2021 extends into the arc-shaped groove 941 and is slidably matched with the arc-shaped groove 941. The bottom surface of the arc-shaped groove 941 is in a wedge-shaped surface shape. One end of the arc-shaped groove 941 is the highest end and the other end is the lowest end. In the initial state, the driving rod 2021 is located at the lowest end of the arc-shaped groove 941.

[0073] When the lead screw 26 rotates to drive the mounting plate 23 to rise, the first bevel gear 261 drives the second bevel gear 201 to rotate. The second bevel gear 201 drives the first driving wheel 202 to rotate. The driving rod 2021 on the first driving wheel 202 will first slide from the lowest end of the arc-shaped groove 941 to the highest end, and then drive the second driving wheel 94 to rotate synchronously. When the driving rod 2021 slides in the arc-shaped groove 941, due to the displacement difference between the lowest end and the highest end, the second driving wheel 94 will move away from the first driving wheel 202, that is, drive the sliding rod 9 to slide. The sliding rod 9 drives the sliding block 6 to slide, and the first ratchet tooth 61 and the second ratchet tooth 71 are disengaged.

[0074] Referring toFigure 5 , Figure 6 and Figure 9 , the driving assembly 8 includes a rack 81 and a driving gear 82. The rack 81 slides in the receiving groove 51, and the rack 81 is located on the side of the vertical plate 52 away from the sliding block 6. One end of the insertion column 62 away from the sliding block 6 is fixedly connected to the rack 81, and the driving gear 82 is rotatably arranged in the installation groove 4. When the sliding rod 9 drives the sliding block 6 to slide, the sliding block 6 drives the rack 81 to slide through the insertion rod. The rack 81 meshes with the driving gear 82, and the driving gear 82 rotates, so that the fixed block 5 can be driven to descend by the rack 81, realizing the descent of the supporting plate 3.

[0075] The base 2 is rotatably connected with a second connecting shaft 30 in the installation groove 4. A third bevel gear 301 and a first belt pulley 302 are coaxially fixed on the second connecting shaft 30. The third bevel gear 301 meshes with the first bevel gear 261. The rotation axes of the third bevel gear 301 and the second bevel gear 201 are perpendicular to each other. The base 2 is also rotatably connected with a third connecting shaft 40 in the installation groove 4. The third connecting shaft 40 is located below the second connecting shaft 30. A second belt pulley 401 and a third belt pulley 402 are coaxially fixed on the third connecting shaft 40. The first belt pulley 302 and the second belt pulley 401 are driven by a first belt. The base 2 is also rotatably connected with a fourth connecting shaft 50 in the installation groove 4. A fourth belt pulley 501 and a fifth belt pulley 502 are coaxially fixed on the fourth connecting shaft 50. The third belt pulley 402 and the fourth belt pulley 501 are driven by a second belt. The base 2 is also rotatably connected with a fifth connecting shaft 60 in the installation groove 4. A sixth belt pulley 601 is coaxially fixed on the fifth connecting shaft 60. The fifth belt pulley 502 and the sixth belt pulley 601 are driven by a third belt. The driving gear 82 is coaxially fixed on the fifth connecting shaft 60. When the lead screw 26 rotates to drive the mounting plate 23 to rise, the first bevel gear 261 drives the third bevel gear 301 to rotate, and then the rotation of the driving gear 82 is realized through the rotation of all belt pulleys and belts.

[0076] In practice, after a grinding operation is completed, the lead screw 26 rotates to drive the mounting plate 23 to rise. The lead screw 26 drives the first bevel gear 261 to rotate, and the first bevel gear 261 synchronously drives the second bevel gear 201 and the third bevel gear 301 to rotate. The sliding rod 9 slides to drive the sliding block 6 to slide, so that the first ratchet tooth 61 and the second ratchet tooth 71 are disengaged. At this time, the supporting plate 3 can descend. When the sliding block 6 slides, the rack 81 is driven to slide through the insertion post 62. The rack 81 meshes with the driving gear 82. At this time, the driving gear 82 drives the supporting plate 3 to descend through the rack 81. When the lead screw 26 stops rotating, under the action of the return spring 92, the sliding rod 9 returns to its original position. Under the action of the abutting spring 63, the sliding block 6 returns to its original position. The first ratchet tooth 61 and the second ratchet tooth 71 are engaged, and the rack 81 and the driving gear 82 are disengaged. Subsequently, when the lead screw 26 drives the mounting plate 23 to descend, that is, the lead screw 26 rotates in reverse, at this time, the first driving wheel 202 will directly drive the second driving wheel 94 to rotate, and the sliding rod 9 will not slide.

[0077] The implementation principle of the processing technology of the ultra-high pressure valve body in the embodiment of the present application is as follows: In the initial state, under the action of the compression spring 42, the supporting plate 3 is at the highest rising stroke. The valve body blank is placed on the supporting plate 3, so that the front plane or the rear plane of the valve body blank faces upward. Subsequently, the two clamping plates 22 clamp the valve body blank. The lead screw 26 rotates to drive the grinding wheel 24 to descend, and the grinding operation on the valve body blank can be realized; after one grinding is completed, the lead screw 26 rotates to drive the grinding wheel 24 to rise. At this time, the sliding rod 9 will drive the sliding block 6 to slide, the first ratchet tooth 61 and the second ratchet tooth 71 are disengaged, and the rack 81 and the driving gear 82 are meshed. The driving gear 82 rotates to make the supporting plate 3 descend to avoid the rotation of the valve body blank. The two clamping plates 22 rotate synchronously to drive the valve body blank to rotate 90 degrees; when the lead screw 26 stops rotating, the sliding block 6 returns to its original position, the first pawl and the second pawl are engaged, the rack 81 and the driving gear 82 are disengaged. Under the action of the compression spring 42, the supporting plate 3 rises until it abuts against the valve body blank. The lead screw 26 rotates again to drive the grinding wheel 24 to descend for grinding operation. Repeating the above actions can realize the grinding operation on the four surfaces of the valve body blank. In this way, the automation degree of the grinding operation is high, and the efficiency of grinding processing is improved.

[0078] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A processing technology for an ultra-high pressure valve body, characterized in that: The steps include: S1: preparing a blank of an ultra-high pressure valve body (1), wherein the blank is a hexahedral forging; S2: Grinding the lower plane (101), the upper plane (109), the rear plane (121) and the front plane (122) of the ultra-high pressure valve body (1) using a grinder; the height of the lower plane (101) and the upper plane (109) is controlled within ±0.1 mm, and the thickness of the rear plane (121) and the front plane (122) is controlled within ±0.1 mm; The grinding machine comprises a base (2), a supporting plate (3) for supporting a valve body blank is provided on the base (2) in a lifting manner, connecting plates (21) are slidably provided on both sides of the supporting plate (3) of the base (2), a clamping plate (22) is rotatably provided on the side where the two connecting plates (21) are close to each other, a mounting plate (23) is provided on the base (2) in a lifting manner, and a grinding wheel (24) is rotatably provided on the mounting plate (23); A mounting seat (25) is arranged on the base (2) in a vertical direction, a screw rod (26) is rotatably connected in the mounting seat (25) in a vertical direction, a slide is threadedly connected to the screw rod (26), the mounting plate (23) is fixedly connected to the slide, a first motor (251) for driving the screw rod (26) to rotate is arranged at the upper end of the mounting seat (25), a second motor (231) is installed on the mounting plate (23), and an output shaft of the second motor (231) is coaxially fixed to the grinding wheel (24); The base (2) is provided with a mounting groove (4), the lower side of the supporting plate (3) is provided with a guide sleeve (31), the base (2) is located in the mounting groove (4) and is provided with a guide rod (41) in the vertical direction, the guide sleeve (31) and the guide rod (41) are plugged and slidably matched, a compression spring (42) is sleeved on the circumference of the guide rod (41), one end of the compression spring (42) is connected to the bottom wall of the mounting groove (4), and the other end of the compression spring (42) is connected to the lower end surface of the guide sleeve (31); the lower side of the supporting plate (3) is also integrally formed with a fixed block (5), the fixed block (5) is provided with a receiving groove (51), the fixed block (5) is located in the receiving groove (51) and is slidably provided with a sliding block (6), the sliding block (6) slides in the horizontal direction, and the side surface of the sliding block (6) is distributed with a first ratchet (61) in the vertical direction, and the fixed The block (5) is located in the middle of the receiving groove (51) and is fixedly connected to a vertical plate (52); a plug-in column (62) is provided on the side of the sliding block (6) away from the first ratchet (61); the plug-in column (62) is plugged and slidably matched with the vertical plate (52); an abutment spring (63) is sleeved on the plug-in column (62); one end of the abutment spring (63) is connected to the vertical plate (52); and the other end of the abutment spring (63) is connected to the sliding block (61). The base (2) is located in the mounting groove (4) and is provided with a one-way plate (7) in the vertical direction, and a second ratchet (71) is provided on a side of the one-way plate (7) close to the sliding block (6), and the first ratchet (61) and the second ratchet (71) are meshed and matched; a driving member for driving the sliding block (6) to slide is provided in the base (2), and a driving component (8) for driving the fixed block (5) to descend is also provided in the base (2); The driving member is configured as a sliding rod (9), and the sliding rod (9) is slidably arranged on the one-way plate (7) in the horizontal direction. A universal ball (93) is installed at one end of the sliding rod (9) close to the sliding block (6). A sliding groove (64) is provided on one side of the sliding block (6) close to the one-way plate (7) in the vertical direction. The universal ball (93) is located in the sliding groove (64) and forms a rolling fit with the sliding groove (64). The lower end of the screw rod (26) extends into the mounting groove (4), and a first bevel gear (261) is coaxially fixed to the lower end of the screw rod (26). The base (2) is located in the mounting groove (4) and is rotatably connected to a first connecting shaft (20). A second bevel gear (201) is coaxially fixed to the first connecting shaft (20), and the second bevel gear (201) is meshed with the first bevel gear (261). A first driving wheel (202) is also coaxially fixed to the first connecting shaft (20), and the first driving wheel (202) is coaxially fixed to the first connecting shaft (20). A driving rod (2021) is eccentrically arranged on the moving wheel (202); one end of the sliding rod (9) away from the sliding block (6) is rotatably connected to a second driving wheel (94); an arc-shaped groove (941) is provided on the second driving wheel (94); the center of curvature of the arc-shaped groove (941) is located at the center of the circle of the second driving wheel (94); the driving rod (2021) extends into the arc-shaped groove (941) and slidably cooperates with the arc-shaped groove (941); the bottom surface of the arc-shaped groove (941) is wedge-shaped. , one end of the arc-shaped slot (941) is the highest end, and the other end is the lowest end. In the initial state, the driving rod (2021) is located at the lowest end of the arc-shaped slot (941). When the screw rod (26) rotates to drive the mounting plate (23) to rise, the first driving wheel (202) rotates, and the driving rod (2021) moves toward the highest end of the arc-shaped slot (941), and drives the second driving wheel (94) to move in the horizontal direction. The one-way plate (7) is provided with a sliding groove (72) in the horizontal direction. The sliding rod (9) is slidably matched with the sliding groove (72), and an abutment plate (91) is integrally formed on the peripheral side of the sliding rod (9). The one-way plate (7) is provided with an annular groove (73) on the inner wall of the sliding groove (72), and the abutment plate (91) slides in the annular groove (73). A return spring (92) is sleeved on the sliding rod (9), and one end of the return spring (92) is connected to the inner wall of the annular groove (73), and the other end of the return spring (92) is connected to the abutment plate (91); The driving assembly (8) comprises a rack (81) and a driving gear (82); the rack (81) slides in the receiving groove (51) of the fixed block (5); one end of the plug-in column (62) away from the sliding block (6) is fixedly connected to the rack (81); the driving gear (82) is rotatably arranged in the mounting groove (4); when the sliding block (6) slides, the sliding block (6) drives the rack (81) to slide through the plug-in column (62), so that the rack (81) and the driving gear (82) are meshed; S3: machining the right end face (103), the right welding groove (102), the right straight channel (104), the left end face (117), the left welding groove (118) and the left straight channel (119) on a lathe; after machining, a right plane (106) and a left plane (110) are formed, and the width of the right plane (106) and the left plane (110) is controlled within ±0.1 mm; S4: rough machining the threaded hole (111), the first center hole (112), the second center hole (113), the third center hole (114), the surfacing groove of the sealing surface (115) and the fourth center hole (116) in batches in a machining center; the threaded hole (111), the first center hole (112), the second center hole (113), the third center hole (114) and the fourth center hole (116) are left with a machining allowance of 1.5 to 2 mm, and the surfacing groove of the sealing surface (115) is 3 mm deep; S5: Sealing surface (115) is welded with hard alloy; S6: batch finishing of the middle threaded hole (111), the first center hole (112), the second center hole (113), the third center hole (114), the sealing surface (115) and the fourth center hole (116) in a machining center; after finishing, the roughness of the middle threaded hole (111), the first center hole (112), the third center hole (114) and the fourth center hole (116) is controlled within Ra1.6 to Ra3.2, and the roughness of the second center hole (113) and the sealing surface (115) is controlled within Ra0.4 to Ra0.8; the coaxiality of the middle threaded hole (111), the second center hole (113) and the sealing surface (115) is controlled within φ0.001; S7: Drilling the right oblique channel (105) and the left oblique channel (120); S8: Processing the fixing hole (107); S9: Processing threaded holes (108); S10: grinding the sealing surface (115) against the valve disc; S11: Inspection and computer laser printing mark.

2. The processing technology of the ultra-high pressure valve body according to claim 1 is characterized in that: Two driving cylinders (27) are arranged on the base (2) in a relative manner. The two driving cylinders (27) correspond to the two connecting plates (21) one by one. The piston rods of the driving cylinders (27) are fixedly connected to the corresponding connecting plates (21). A rotating cylinder (28) is installed on the connecting plate (21). The output shaft of the rotating cylinder (28) is fixedly connected to the corresponding clamping plate (22).

3. The processing technology of the ultra-high pressure valve body according to claim 1 is characterized in that: The base (2) is located in the mounting groove (4) and is rotatably connected to a second connecting shaft (30), a third bevel gear (301) and a first pulley (302) are coaxially fixed on the second connecting shaft (30), the third bevel gear (301) and the first bevel gear (261) are meshed, the base (2) is located in the mounting groove (4) and is also rotatably connected to a third connecting shaft (40), a second pulley (401) and a third pulley (402) are coaxially fixed on the third connecting shaft (40), the first pulley (302) and the second pulley (401) are connected via a first belt, the base (2) is located in the mounting groove (4) and is rotatably connected to a third connecting shaft (40), A fourth connecting shaft (50) is also rotatably connected in the mounting groove (4), a fourth pulley (501) and a fifth pulley (502) are coaxially fixed on the fourth connecting shaft (50), the third pulley (402) and the fourth pulley (501) are connected via a second belt, the base (2) is located in the mounting groove (4) and is also rotatably connected to a fifth connecting shaft (60), a sixth pulley (601) is coaxially fixed on the fifth connecting shaft (60), the fifth pulley (502) and the sixth pulley (601) are connected via a third belt, and the driving gear (82) is coaxially fixed on the fifth connecting shaft (60).

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