Customized special tool for machining valve body shell

Abstract

The invention provides a customized special tool for machining a valve body shell, and relates to the field of machining tools. Four first tool fixing holes are formed in the top end face of the tool base body in a rectangular array shape. A second tool fixing hole is formed in each of the four first tool fixing holes in a penetrating manner; the four second tool fixing holes are formed in the tool base body in a rectangular array shape in a penetrating mode. Two auxiliary mounting holes are symmetrically and fixedly connected to the top end face of the tool base body. The control handle is rotated out, the auxiliary connecting plate can be pushed through the rotated-out control handle, then fixing of the shell inner supporting column can be relieved through a series of transmission, at the moment, a worker can take down the shell inner supporting column to be replaced, and the problem that after the inner supporting column is abraded or deformed or locally damaged, the inner supporting column cannot be replaced is solved. And as the whole structure cannot be detached, only the whole set of tool can be abandoned and remanufactured, and the use cost of the tool is greatly increased.

Description

Technical Field

[0001] This invention relates to the field of machining tooling technology, and in particular to a custom-made special tooling for machining valve body shells. Background Technology

[0002] During the processing of the valve body shell, in order to ensure that the processing accuracy and dimensional tolerances of the valve body shell meet the standards, workers usually use customized special tooling to fix the valve body shell, so that the processing benchmark of the valve body shell is more uniform, ensuring that the positioning benchmark of each valve body is consistent in batch processing, and improving the processing efficiency of the valve body shell. The existing customized special tooling usually consists of a base and an inner support column.

[0003] For example, utility model patent application number CN202123420547.1 discloses a double-position butterfly valve butterfly plate assembly fixture, specifically including a shell, a baffle fixedly connected inside the shell, a sliding assembly slidably connected outside the baffle, a fixing assembly on the top of the sliding assembly, a fixing shell fixedly connected inside the shell, a push cylinder fixedly connected inside the fixing shell, and a push rod slidably connected outside the push cylinder. The operator places the valve body inside the frustum and the butterfly plate outside the push rod. At this time, the valve body can be fixed by the fixing rod, and the butterfly plate is driven to move by the push rod, so that the butterfly plate contacts the valve body. This avoids the butterfly valve having a certain deviation due to manual positioning installation, which would make the installation more complicated. Furthermore, the height of the valve body can be adjusted by the sliding assembly, which facilitates the use of the valve, improves processing efficiency, and reduces the labor intensity of the operator.

[0004] However, the internal support column of existing custom-made tooling is usually fixed to the base by interference fit. During long-term use, the internal support column, as a key component that directly fits with the valve body shell and the base, is prone to wear, deformation or local damage due to continuous friction during assembly and disassembly, cutting force impact and processing impurities. Since the overall structure cannot be disassembled, the entire tooling set can only be discarded and remade, which greatly increases the cost of tooling use. Moreover, discarding tooling will also cause a double waste of materials and manufacturing costs, increase the processing cost of the valve body shell, and make it inconvenient to use. Summary of the Invention

[0005] In view of this, the present invention provides a customized special tooling for processing valve body shells. It includes an auxiliary sliding column, a connecting slide, a connecting rocker arm, a control slide, and a disassembly / removal positioning pin, which facilitates the individual replacement of the internal support column. By rotating the control handle, the control handle can be rotated out of the tooling base body. The rotated control handle allows the operator to easily push the auxiliary connecting plate to move. As the auxiliary connecting plate moves, the connecting slide slides within the tooling base body. During the sliding of the connecting slide, the connecting rocker arm swings, which in turn causes the control slide to slide within the tooling base body. Through a series of transmissions, the disassembly / removal positioning pin moves, gradually disengaging from the positioning hole and releasing the internal support column from its fixation. At this point, the operator can remove the internal support column for replacement. The control handle can then be rotated out of the tooling base body.

[0006] This invention provides a customized special tooling for processing valve body shells, specifically comprising: a tooling base body; four first tooling fixing holes arranged in a rectangular array on the top surface of the tooling base body; a second tooling fixing hole penetrating through each of the four first tooling fixing holes; the four second tooling fixing holes arranged in a rectangular array penetrating within the tooling base body; two auxiliary mounting holes symmetrically arranged on the top surface of the tooling base body; both auxiliary mounting holes being located inside the four first tooling fixing holes; a shell inner support column being provided in each of the two auxiliary mounting holes; the positions of the two shell inner support columns being aligned; two control slides symmetrically slidably connected within the tooling base body; the two control slides being aligned with the positions of the two auxiliary mounting holes; an auxiliary sliding column slidably connected within the tooling base body; the auxiliary sliding column having a rectangular columnar structure; a connecting slide fixedly connected to the end of the auxiliary sliding column; the connecting slide being slidably connected within the tooling base body.

[0007] Furthermore, the bottom end face of the tooling base body is symmetrically provided with two connecting positioning pin holes; the two connecting positioning pin holes are located on the left and right sides of the bottom end face of the tooling base body; both connecting positioning pin holes are located inside the four second tooling fixing holes.

[0008] Furthermore, an auxiliary connecting plate is fixedly connected to the first end of the auxiliary sliding column; the auxiliary connecting plate is a rectangular block structure; the auxiliary connecting plate is slidably connected inside the tooling base body; two fixing springs are symmetrically fixedly connected to the outside of the connecting slide; the ends of the two fixing springs are both fixedly connected inside the tooling base body.

[0009] Furthermore, the connecting carriage is externally hinged to two connecting rods; both connecting rods are located inside the tooling base body; the ends of the two connecting rods are respectively hinged to the outside of the two control carriages.

[0010] Furthermore, each of the two auxiliary mounting holes is fixedly connected with an auxiliary positioning sleeve; the two auxiliary positioning sleeves are hollow cylindrical structures made of wear-resistant polyurethane; the two auxiliary mounting holes are respectively located on the outer side of the two inner support columns of the outer shell.

[0011] Furthermore, each of the two auxiliary positioning sleeves has a set of auxiliary guide holes symmetrically opened at its lower part; each of the two inner support columns of the outer shell has a set of positioning holes symmetrically opened at its lower part; the two sets of positioning holes are respectively aligned with the positions of the two sets of auxiliary guide holes; each of the two control slides has a set of disassembly and assembly positioning pins symmetrically fixedly connected to its inner side; the two sets of disassembly and assembly positioning pins pass through the two sets of auxiliary guide holes and are inserted into the two sets of positioning holes respectively.

[0012] Furthermore, the auxiliary connecting plate is externally fixedly connected to two mounting seats; a control handle is hinged between the two mounting seats; two control torsion springs are symmetrically fixedly connected to the external side of the control handle's rotating shaft; the ends of the two control torsion springs are respectively fixedly connected to the two mounting seats.

[0013] Furthermore, a positioning and locking hole is provided on the outside of the control handle; a positioning and locking rod is inserted into the positioning and locking hole.

[0014] Furthermore, the positioning locking rod is externally fixedly connected to a fixed sliding seat; the auxiliary connecting plate is externally fixedly connected to a mounting bracket; the fixed sliding seat is slidably connected within the mounting bracket; the fixed sliding seat is externally fixedly connected to a connecting spring; and the end of the connecting spring is fixedly connected within the mounting bracket.

[0015] Furthermore, the outer surfaces of the two inner support columns of the outer shell are provided with multiple sets of roller mounting grooves in a rectangular array; multiple sets of mounting guide rollers are rotatably connected in the multiple sets of roller mounting grooves; the multiple sets of mounting guide rollers are arranged in a linear array in the multiple sets of roller mounting grooves; the multiple sets of mounting guide rollers are all roller-shaped structures made of bearing steel. Beneficial effects

[0016] This invention locks the main body of the tooling base onto the processing equipment, such as the machine tool table, by passing bolts through the first tooling fixing hole and the second tooling fixing hole, ensuring the stability of the tooling during processing. By connecting the positioning pin hole and using the positioning pin, high-precision repeatable positioning of the base with the equipment or other components can be achieved, avoiding clamping deviations and effectively improving the practicality of customized special tooling.

[0017] The wear-resistant polyurethane material of the auxiliary positioning sleeve has excellent elasticity, which can fit tightly into the gap between the inner support column and the auxiliary mounting hole of the outer shell, buffering the impact force during assembly and disassembly. At the same time, it is wear-resistant, oil-resistant, and easy to process. It is suitable for positioning scenarios with high requirements for buffering at normal temperature, ensuring the stability of the valve body shell during the processing and effectively improving the processing efficiency of the valve body shell.

[0018] By rotating the control handle, the control handle can be turned out of the fixture base body. The turned-out control handle allows the operator to easily push the auxiliary connecting plate, causing it to slide within the fixture base body. This, in turn, causes the auxiliary sliding column to slide within the fixture base body, which in turn causes the connecting slide to swing the connecting rocker arm. As the connecting rocker arm swings, it causes the control slide to slide within the fixture base body, disengaging the disassembly and assembly positioning pin from the positioning hole and releasing the fixation of the inner support column of the outer shell. At this point, the operator can remove the inner support column of the outer shell for replacement. The operation is simple and quick, allowing for individual replacement of the inner support column without discarding the entire fixture. It is also compatible with different specifications of valve body shells; only the corresponding inner support column needs to be replaced, eliminating the need to remake the entire fixture. When switching between different processing tasks or repairing the fixture, disassembling the inner support column of the outer shell is faster, reducing equipment downtime and effectively improving the convenience of customized fixtures.

[0019] After the control handle is rotated 90 degrees, the positioning locking hole and the positioning locking rod will be aligned. At this time, the positioning locking rod will be released from the pressure of the control handle. The fixed sliding seat will slide in the mounting bracket as the connecting spring returns. As the fixed sliding seat slides, the positioning locking rod will reset and insert into the positioning locking hole, thus limiting and fixing the rotated control handle. This ensures the stability of the control handle during the pushing process and the stable sliding of the auxiliary sliding column, effectively improving the stability of the customized special tooling during use.

[0020] By installing guide rollers, the sliding friction between the valve body shell and the inner support column can be converted into rolling friction. During assembly and disassembly, there is no need to overcome large static friction forces, which greatly reduces the resistance to assembly and disassembly, improves the convenience of operation, and makes operation more effortless and smooth, avoiding jamming or jamming. It is especially suitable for tooling scenarios that require frequent disassembly and removal of the inner support column. It evenly distributes the support force, ensuring positioning accuracy and valve body integrity. The coefficient of friction of rolling friction is much lower than that of sliding friction, which can significantly reduce the wear rate of the inner support column, tooling base body and valve body shell mating surfaces, avoid positioning errors caused by the increase of mating clearance after long-term use, and effectively improve the practicality of customized special tooling. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0022] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0023] In the attached diagram: Figure 1 This is a schematic diagram of the isometric structure of the present invention.

[0024] Figure 2 This is an isometric structural schematic diagram of the present invention viewed from below.

[0025] Figure 3 This is an isometric structural diagram of the sliding roller mounting groove of the present invention.

[0026] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0027] Figure 5 This is an isometric structural diagram of the control carriage of the present invention.

[0028] Figure 6 This is an isometric structural diagram of the connecting rod of the present invention.

[0029] Figure 7 This is the present invention. Figure 6 A magnified structural diagram at point A.

[0030] Figure 8 This is an isometric structural diagram of the auxiliary sliding column of the present invention.

[0031] Figure 9 This is the present invention. Figure 8 A magnified structural diagram at point B.

[0032] List of reference numerals 1. Fixture base body; 101. First fixture fixing hole; 102. Second fixture fixing hole; 103. Connecting positioning pin hole; 104. Auxiliary mounting hole; 105. Auxiliary positioning sleeve; 106. Auxiliary guide insertion hole; 107. Inner support column of the outer shell; 108. Positioning insertion hole; 109. Slide roller mounting groove; 110. Install guide slide roller; 111. Auxiliary sliding column; 112. Connecting slide; 113. Fixing spring; 114. Connecting swing rod; 115. Control slide; 116. Disassembly and assembly positioning insertion column; 117. Auxiliary connecting plate; 118. Mounting seat; 119. Control handle; 120. Mounting bracket; 121. Fixing sliding seat; 122. Connecting spring; 123. Positioning locking insertion rod; 124. Positioning locking insertion hole; 125. Control torsion spring. Detailed Implementation Example 1

[0033] This invention provides a custom-designed tooling for machining valve body shells. Please refer to [reference needed]. Figures 1 to 9 As shown, it includes: tooling base body 1; The top surface of the fixture base body 1 has four first fixture fixing holes 101 arranged in a rectangular array; each of the four first fixture fixing holes 101 has a second fixture fixing hole 102 extending through it; the four second fixture fixing holes 102 are arranged in a rectangular array extending through the fixture base body 1; the top surface of the fixture base body 1 has two auxiliary mounting holes 104 symmetrically arranged; both auxiliary mounting holes 104 are located inside the four first fixture fixing holes 101; each of the two auxiliary mounting holes 104 has an inner support column 107; the positions of the two inner support columns 107 are aligned; two control slides 115 are symmetrically slidably connected inside the fixture base body 1; both control slides 115 are aligned with the positions of the two auxiliary mounting holes 104; an auxiliary sliding column 111 is slidably connected inside the fixture base body 1; the auxiliary sliding column 111 has a rectangular column structure; a connecting slide 112 is fixedly connected to the end of the auxiliary sliding column 111; the connecting slide 112 is slidably connected inside the fixture base body 1.

[0034] The tooling base body 1 has two symmetrically opened connecting positioning pin holes 103 on its bottom end face; the two connecting positioning pin holes 103 are located on the left and right sides of the bottom end face of the tooling base body 1; the two connecting positioning pin holes 103 are located inside the four second tooling fixing holes 102.

[0035] Among them, the first end of the auxiliary sliding column 111 is fixedly connected to the auxiliary connecting plate 117; the auxiliary connecting plate 117 is a rectangular block structure; the auxiliary connecting plate 117 is slidably connected inside the tooling base body 1; two fixing springs 113 are symmetrically fixedly connected to the outside of the connecting slide 112; the ends of the two fixing springs 113 are fixedly connected inside the tooling base body 1.

[0036] Among them, the external symmetrical hinge of the connecting slide 112 is connected to two connecting rods 114; both connecting rods 114 are set inside the tooling base body 1; the ends of the two connecting rods 114 are respectively hinged to the outside of the two control slides 115.

[0037] Each of the two auxiliary mounting holes 104 is fixedly connected to an auxiliary positioning sleeve 105; the two auxiliary positioning sleeves 105 are hollow cylindrical structures made of wear-resistant polyurethane; the two auxiliary mounting holes 104 are respectively located on the outside of the two inner support columns 107 of the outer shell.

[0038] Among them, the lower part of each of the two auxiliary positioning sleeves 105 is symmetrically provided with a set of auxiliary guide holes 106; the lower part of each of the two housing inner support columns 107 is symmetrically provided with a set of positioning holes 108; the two sets of positioning holes 108 are respectively aligned with the positions of the two sets of auxiliary guide holes 106; the inner side of each of the two control slides 115 is symmetrically fixedly connected with a set of disassembly and assembly positioning pins 116; the two sets of disassembly and assembly positioning pins 116 pass through the two sets of auxiliary guide holes 106 and are inserted into the two sets of positioning holes 108 respectively.

[0039] The auxiliary connecting plate 117 is externally fixedly connected to two mounting seats 118; a control handle 119 is hinged between the two mounting seats 118; two control torsion springs 125 are symmetrically fixedly connected to the external shaft of the control handle 119; the ends of the two control torsion springs 125 are respectively fixedly connected to the two mounting seats 118.

[0040] The control handle 119 has a positioning and locking hole 124 on its outside; a positioning and locking rod 123 is inserted into the positioning and locking hole 124.

[0041] The positioning locking rod 123 is externally fixedly connected to a fixed sliding seat 121; the auxiliary connecting plate 117 is externally fixedly connected to a mounting bracket 120; the fixed sliding seat 121 is slidably connected within the mounting bracket 120; the fixed sliding seat 121 is externally fixedly connected to a connecting spring 122; and the end of the connecting spring 122 is fixedly connected within the mounting bracket 120.

[0042] The specific usage and function of this embodiment: In this invention, by setting the first tooling fixing hole 101 and the second tooling fixing hole 102, and by passing the bolt through the first tooling fixing hole 101 and the second tooling fixing hole 102, the tooling base body 1 can be locked onto the processing equipment such as the machine tool workbench, ensuring the stability of the tooling during processing. By setting the connecting positioning pin hole 103, it can be used with the positioning pin to achieve high-precision repeatable positioning of the base with the equipment or other components, avoiding clamping deviation. By pushing the auxiliary connecting plate 117, the auxiliary connecting plate 117 will slide inside the tooling base body 1. As the auxiliary connecting plate 117 slides, it will drive the auxiliary sliding column 111 to slide inside the tooling base body 1. The movement causes the connecting slide 112 to slide within the fixture base body 1. As the connecting slide 112 slides, it stretches the fixing spring 113. During the sliding of the connecting slide 112, it causes the connecting rocker arm 114 to swing. As the connecting rocker arm 114 swings, it causes the control slide 115 to slide within the fixture base body 1. The wear-resistant polyurethane material of the auxiliary positioning sleeve 105 has excellent elasticity, which can tightly fit the gap between the inner support column 107 and the auxiliary mounting hole 104, buffering the impact force during assembly and disassembly. It is also wear-resistant, oil-resistant, and easy to process, making it suitable for positioning scenarios with high buffering requirements at room temperature. When the control slide 115 slides within the fixture base body 1, it causes the disassembly and assembly positioning pin 116 to move. The movement of the positioning pin 116 will cause it to slowly detach from the positioning hole 108. The auxiliary guide hole 106 prevents the auxiliary positioning sleeve 105 from obstructing the movement of the positioning pin 116. At the same time, the auxiliary guide hole 106 provides guidance for the positioning pin 116, ensuring the stability of its movement. After the positioning pin 116 is completely detached from the positioning hole 108, the fixation of the inner support column 107 will be released. At this time, the operator can remove the inner support column 107 for replacement. The control handle 119 can be rotated out of the fixture base body 1 by rotating the control handle 119. The rotated control handle 119 allows the operator to easily push the auxiliary support column 106. The connecting plate 117 facilitates the smooth movement of the connecting slide 112. In the initial state, the control handle 119 presses against the positioning locking rod 123. At this time, the positioning locking rod 123 causes the fixed sliding seat 121 to slide on the mounting bracket 120 and press against the connecting spring 122. The connecting spring 122 is in a compressed state. After the control handle 119 is rotated 90 degrees, the positioning locking hole 124 and the positioning locking rod 123 are aligned. At this time, the positioning locking rod 123 is no longer pressed by the control handle 119. The fixed sliding seat 121 slides within the mounting bracket 120 as the connecting spring 122 rebounds. As the fixed sliding seat 121 slides, the positioning locking rod 123 resets and inserts into the positioning locking hole 124.The control handle 119 is then limited and fixed after rotation. Example 2

[0043] Based on Example 1, please refer to Figures 1 to 3 As shown, it includes: a roller mounting groove 109 and a guide roller 110. The outer surfaces of the two inner support columns 107 of the outer shell are provided with multiple sets of roller mounting grooves 109 in a rectangular array. Multiple sets of guide rollers 110 are rotatably connected in the multiple sets of roller mounting grooves 109. The multiple sets of guide rollers 110 are arranged in a linear array in the multiple sets of roller mounting grooves 109. The multiple sets of guide rollers 110 are all roller-shaped structures made of bearing steel.

[0044] The specific usage and function of this embodiment: In this invention, by installing the guide roller 110, the sliding friction between the valve body shell and the inner support column 107 can be converted into rolling friction. During assembly and disassembly, there is no need to overcome a large static friction force, which greatly reduces the resistance to assembly and disassembly, improves the convenience of operation, evenly distributes the support force, ensures the positioning accuracy and valve body integrity, and at the same time, the rolling contact has stronger guiding properties, which can guide the inner support column 107 to accurately embed into the valve body shell, reduce the alignment time during clamping, and improve the operating efficiency.

[0045] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0046] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0047] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A custom tooling for machining a valve body housing, comprising: Tool base body (1); The top surface of the tool base body (1) is provided with four first tool fixing holes (101) in a rectangular array; One second tool fixing hole (102) is provided in each of the four first tool fixing holes (101); Four second tool fixing holes (102) are provided in the tool base body (1) in a rectangular array; The tool base body (1) is characterized in that the top surface is symmetrically provided with two auxiliary mounting holes (104); Two auxiliary mounting holes (104) are provided inside the four first tool fixing holes (101); Two housing inner support columns (107) are provided in the two auxiliary mounting holes (104); The positions of the two housing inner support columns (107) are aligned; The tool base body (1) is symmetrically connected with two control slides (115); The positions of the two control slides (115) are aligned with the two auxiliary mounting holes (104); The tool base body (1) is connected with an auxiliary sliding column (111); The auxiliary sliding column (111) is a rectangular column structure; The end of the auxiliary sliding column (111) is fixedly connected with a connecting slide (112); The connecting slide (112) is connected in the tool base body (1).

2. A custom tool for machining a valve body housing as defined in claim 1, wherein: The bottom surface of the tool base body (1) is symmetrically provided with two connecting positioning pin holes (103); Two connecting positioning pin holes (103) are provided on the left and right sides of the bottom surface of the tool base body (1); Two connecting positioning pin holes (103) are provided inside the four second tool fixing holes (102).

3. A custom tool for machining a valve body housing as defined in claim 1, wherein: The first end of the auxiliary sliding column (111) is fixedly connected with an auxiliary connecting plate (117); The auxiliary connecting plate (117) is a rectangular block structure; The auxiliary connecting plate (117) is connected in the tool base body (1); The outer part of the connecting slide (112) is fixedly connected with two fixed springs (113); The ends of the two fixed springs (113) are fixedly connected in the tool base body (1).

4. A custom tool for machining a valve body housing as defined in claim 1, wherein: The outer part of the connecting slide (112) is hingedly connected with two connecting swing rods (114); Two connecting swing rods (114) are provided in the tool base body (1); The ends of the two connecting swing rods (114) are respectively hingedly connected to the outer part of the two control slides (115).

5. A custom tool for machining a valve body housing as defined in claim 1, wherein: Two auxiliary positioning sleeves (105) are fixedly connected in the two auxiliary mounting holes (104); Two auxiliary positioning sleeves (105) are hollow cylindrical structures made of wear-resistant polyurethane; Two auxiliary mounting holes (104) are provided outside the two housing inner support columns (107).

6. A custom tool for machining a valve body housing as defined in claim 5, wherein: The lower part of each of the two auxiliary positioning sleeves (105) is symmetrically provided with a group of auxiliary guide insertion holes (106); the lower part of each of the two shell inner support columns (107) is symmetrically provided with a group of positioning insertion holes (108); the two groups of positioning insertion holes (108) are respectively aligned with the two groups of auxiliary guide insertion holes (106); the inner side of each of the two control carriages (115) is fixedly connected with a group of disassembly positioning insertion columns (116) in symmetry; the two groups of disassembly positioning insertion columns (116) are respectively inserted into the two groups of positioning insertion holes (108) through the two groups of auxiliary guide insertion holes (106).

7. A custom tool for machining a valve body housing as defined in claim 3, wherein: The outer part of the auxiliary connecting plate (117) is fixedly connected with two mounting seats (118); the two mounting seats (118) are hingedly connected with a control handle (119); the outer part of the rotating shaft of the control handle (119) is fixedly connected with two control torsional springs (125) in symmetry; the ends of the two control torsional springs (125) are respectively fixedly connected in the two mounting seats (118).

8. A custom tool for machining a valve body housing as defined in claim 7, wherein: The outer part of the control handle (119) is provided with a positioning locking insertion hole (124); the positioning locking insertion hole (124) is inserted with a positioning locking insertion rod (123).

9. A custom tool for machining a valve body housing as defined in claim 8, wherein: The outer part of the positioning locking insertion rod (123) is fixedly connected with a fixed sliding seat (121); the outer part of the auxiliary connecting plate (117) is fixedly connected with a mounting rack (120); the fixed sliding seat (121) is slidingly connected in the mounting rack (120); the outer part of the fixed sliding seat (121) is fixedly connected with a connecting spring (122); the end of the connecting spring (122) is fixedly connected in the mounting rack (120).

10. A custom tool for machining a valve body housing as defined in claim 1, wherein: The outer part of each of the two shell inner support columns (107) is provided with a plurality of groups of slide roller installation grooves (109) in a rectangular array shape; a plurality of groups of installation guide slide rollers (110) are rotatably connected in the plurality of groups of slide roller installation grooves (109); the plurality of groups of installation guide slide rollers (110) are respectively arranged in the plurality of groups of slide roller installation grooves (109) in a linear array shape; the plurality of groups of installation guide slide rollers (110) are all roller-shaped structures made of bearing steel.

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