A batch precision control cubic perpendicularity tool and a use method thereof

Abstract

The present application belongs to the field of precision machining, and relates to a batch precision control cubic perpendicularity tool and a use method. The tool comprises a gasket support plate, a tight screw holder is arranged on the gasket support plate, a plurality of right-angle V-shaped grooves are arranged on the inner wall of the tight screw holder, a vertical positioning block is arranged in the tight screw holder, and a plurality of right-angle V-shaped grooves are arranged on the outer wall of the vertical positioning block. In use, the side surface tight screw of the cubic can adjust and press the cubic side wall through the cubic side surface gasket, the cubic top pressing screw in the metal pressing block can press and position the cubic top surface through the cubic top gasket, and the cubic is subjected to high-precision batch machining. The tool and the use method greatly improve the cubic batch production efficiency, have high grinding precision, can accurately control the perpendicularity precision of the ground surface, and have high product yield.

Description

Technical Field

[0001] The invention belongs to the field of precision machining and relates to a tool for precisely controlling the verticality of cubes in batches and a method for using the tool. Background Art

[0002] Polishing is a classic ultra-precision machining technique, widely used in surface finishing of parts to further ensure various precisions. Therefore, polishing is often used as the final step to ensure part accuracy. Its precision control can sometimes reach nanometer levels. While the process is simple and inexpensive, it often only processes a single part and is time-consuming, resulting in low efficiency.

[0003] Geometric accuracy is used to express the degree to which the actual geometric parameters of a part are close to the ideal geometric parameters. Perpendicularity is a geometric accuracy that evaluates the vertical accuracy of a part. It is used to describe the perpendicularity of the measured object relative to the reference. It is a commonly used method for evaluating part geometric accuracy and can be divided into surface perpendicularity and axis perpendicularity. Surface perpendicularity is the most commonly used perpendicularity and is described as the perpendicularity of a surface relative to another reference plane. Surface perpendicularity is closely related to parallelism. When describing surface perpendicularity, flatness accuracy is naturally implied in the description.

[0004] High-precision verticality often requires manual individual grinding control, but manual grinding processes a small number of parts at a time, resulting in low grinding efficiency. Therefore, a high-precision batch grinding tool for controlling cube verticality can significantly improve cube grinding efficiency. Patent [CN213004345U] provides a high-precision verticality grinding device that achieves automated verticality grinding, but the device can only process one cube at a time and the entire device can only process the front and back surfaces of a cube. Patent [CN116100457A] provides an automatic verticality grinding device for the mounting surface of a screw nut. This device uses a rotating grinding wheel to grind, solving the dead angle problem of manual scraping. However, its grinding accuracy is low, and the verticality accuracy of the ground surface cannot be accurately controlled.

[0005] High-precision cubes are commonly used in metrology, optics, and inertial navigation. They require not only high planar accuracy but also high perpendicularity between two or three adjacent sides, with this requirement reaching arcseconds. Currently, single-piece manufacturing is often done by manual polishing based on frequent measurements, resulting in low efficiency and yield rates. Summary of the Invention

[0006] In order to solve the problems of low cube production efficiency, low grinding accuracy, inability to accurately control the verticality accuracy of the ground surface, low efficiency, and low yield, a tool for batch precision control of cube verticality is provided, comprising: a gasket support plate; a set screw holder is provided on the gasket support plate; the set screw holder is a cylindrical structure with a hole in the center, and a plurality of right-angled V-shaped grooves of the set screw holder for positioning two adjacent sides of the cube are provided on its inner wall; a vertical positioning block is provided in the set screw holder; the vertical positioning block is a cylindrical structure with a hole in the center, and a plurality of right-angled V-shaped grooves of the vertical positioning block are provided on its outer wall to cooperate with the right-angled V-shaped grooves of the set screw holder to position the cube; metal pressing blocks are provided on the set screw holder and the vertical positioning block;

[0007] The two side walls of the right-angle V-shaped groove of the set screw holder are penetrated by a cube side set screw. The bottom of the cube side set screw is provided with a cube side gasket. By rotating the cube side set screw, the cube side gasket can be adjusted to press and position the cube side wall.

[0008] Several cube top pressure screws are set through the top surface of the metal pressure block; a cube top gasket is set at the bottom of the cube top pressure screws; by rotating the cube top pressure screws, the cube top gasket can be adjusted to press and position the cube top surface; a protective cover with a center hole is set on the top of the metal pressure block.

[0009] According to the tooling for precisely controlling the verticality of cubes in batches, a V-shaped groove is provided on the outer wall of the set screw holder, and side tightening threaded holes are vertically penetrated on the two inner side walls of the V-shaped groove; the side tightening screws of the cube are fitted in the side threaded holes of the cube;

[0010] The middle parts of the two inner side walls of the right-angle V-shaped groove of the set screw retainer are both provided with vertically penetrating cube side gasket placement grooves, which are used to place cube side gaskets.

[0011] According to the above-mentioned tooling for batch precision control of cube verticality, the angle of the V-groove on the outer wall of the retainer is 120°; the cube side gasket is vertically arranged in the cube side gasket placement groove and protrudes from the top surface of the cube side gasket placement groove.

[0012] According to the above-mentioned tooling for batch precision control of the verticality of cubes, the two inner side walls of the vertical positioning block's right-angled V-shaped groove arranged on the outer side wall of the vertical positioning block are respectively the first cube vertical positioning surface and the second cube vertical positioning surface; a U-shaped liquid guide groove is radially arranged on the top surface of the vertical positioning block; the U-shaped liquid guide groove is connected to the bottom of the vertical positioning block's right-angled V-shaped groove, and a tool retreat groove is arranged at the bottom of the vertical positioning block's right-angled V-shaped groove.

[0013] According to the above-mentioned tooling for batch precision control of the verticality of cubes, the characteristics are: a rounded corner is set on the top of the inner wall of the right-angle V-shaped groove of the vertical positioning block, and a plurality of vertical positioning piece connection threaded holes are evenly distributed in an annular manner on the top of the vertical positioning block for connecting with the metal pressure block bolts.

[0014] According to the above-mentioned tooling for precisely controlling the verticality of cubes in batches, the top surface of the metal pressing block is provided with two inner and outer concentric raised rings; a plurality of metal pressing block connection holes are evenly distributed in an annular pattern between the inner and outer concentric raised rings on the top surface.

[0015] According to the above-mentioned tooling for batch precision control of the verticality of cubes, the metal pressing block connection holes on the metal pressing block include, radially from the outside to the inside, an adjustment screw holder connection hole, a cube upper fastening threaded hole, and a vertical positioning piece connection hole, wherein the adjustment screw holder connection hole and the vertical positioning piece connection hole are countersunk holes; a cube upper gasket placement hole is provided at the bottom of the cube upper fastening threaded hole for placing the cube top gasket.

[0016] According to the tooling for precisely controlling the verticality of cubes in batches as described above, the protective cover is a concave cover-shaped structure with a hole in the center and a high outer circle and a low inner circle. The edges of the inner and outer circles of the top of the protective cover are chamfered.

[0017] According to the above-mentioned tooling for batch precision control of the verticality of cubes, the materials of the metal pressure block, the set screw holder, and the vertical positioning block are all stainless steel; the cube side set screws include: a first cube side set screw and a second cube side set screw, which are respectively arranged at the bottom of the two cube side gasket placement grooves of the V-shaped groove on the outer wall of the holder; the side set threaded holes include: a first side set threaded hole and a second side set threaded hole, which are respectively matched and connected with the first cube side set screw and the second cube side set screw; the cube side gasket placement groove includes: a first cube side gasket placement groove and a second cube side gasket placement groove, which are respectively arranged on the two inner side walls of the V-shaped groove on the outer wall of the holder; the cube side gasket includes a cube side gasket and a second cube side gasket, which are respectively arranged in the first cube side gasket placement groove and the second cube side gasket placement groove.

[0018] The method for using the tool for batch precision control of cube verticality as described above includes the following steps:

[0019] Step S1: Assembling tooling

[0020] S1.1: With the bottom surface of the vertical locating block and the set screw holder facing downward, place the vertical locating block in the set screw holder; place the metal pressure block on top of it and screw in the pressure screw on the top of the cube; use two to three positioning rods with a diameter smaller than the vertical locating piece connection holes to insert into non-adjacent vertical locating piece connection holes to position the metal pressure block and the vertical locating block; screw the vertical locating block connecting bolts into the other vertical locating piece connection holes. After the vertical locating block connecting bolts have been screwed into the other vertical locating piece connection threaded holes, remove the positioning rods and screw in the remaining vertical locating block connecting bolts to securely connect the vertical locating block and the metal pressure block;

[0021] S1.2: Screw the retainer connection screws into the adjusting screw retainer connection holes and the set screw retainer connection threaded holes to securely connect the set screw retainer to the metal pressing block. Turn the tool over and place the metal pressing block at the bottom.

[0022] S1.3: Place the top gasket of the cube into the upper gasket placement hole of the cube on the metal pressing block; place the first and second side gaskets of the cube into the first and second side gasket placement slots of the set screw holder, respectively; use the gasket support plate and the adjustment screw positioning frame to position the gasket support plate and the adjustment screw positioning frame using the gasket support plate connecting screws to securely connect the gasket support plate and the adjustment screw positioning frame; place the cube into the fixture along the first and second vertical positioning surfaces of the vertical positioning block;

[0023] S1.4: Screw the first cube side set screw into the first side set threaded hole of the set screw holder. Preliminarily tighten the first cube side set screw and / or the second cube side set screw to secure the cube and prevent it from falling.

[0024] S1.5: Turn the tool over again and place it on a plane with high-precision flatness. Loosen the first cube side set screw and / or the second cube side set screw. Then, according to the processing status, retighten the first cube side set screw and / or the second cube side set screw. If the cube has not been processed or only one side has been processed, only the first cube side set screw or the second cube side set screw needs to be tightened to ensure that the cube is in close contact with the first cube vertical positioning surface of the vertical positioning block. If two or more sides have been processed, the first cube side set screw and the second cube side set screw need to be tightened separately to ensure that the processed surface is in close contact with the first cube vertical positioning surface and the second cube vertical positioning surface of the vertical positioning block.

[0025] S1.6: Remove the altimeter and place the pointer on the raised ring on the top surface of the metal block. Screw in the pressure screw on the top of the cube while observing the change in the altimeter value. When the altimeter value changes, it means that the cube and the bottom surface of the tooling are not coplanar. Then, adjust the screwing depth of the pressure screw on the top of each cube according to the altimeter data at different positions and the thickness of the cube to be removed in this processing. Finally, make the entire tooling achieve high-precision parallelism to ensure that each cube is in the same initial state during grinding;

[0026] S2: Grinding cube: Place the device on a ring polishing machine for grinding, or place it on a grinding plate for manual grinding;

[0027] S2.1: Tighten the set screws on the side of the first cube and the second cube to create a cube reference surface, which will serve as the reference for the subsequent surface machining.

[0028] S2.2: After the cube base surface is ground, remove the cube and place the trimmed cube base surface in the fixture so that it fits in with the first cube vertical positioning surface of the vertical positioning block. Only the first cube side set screws are tightened, and a second round of grinding and trimming is performed. After grinding and trimming, two trimmed mutually perpendicular surfaces are obtained.

[0029] S2.3: After completing the trimming of two adjacent surfaces, keep the cube reference surface aligned with the first cube vertical positioning surface of the vertical positioning block, rotate the cube with the intersection of the two surfaces as the center axis, and then place it back. At this time, align the surface to be trimmed with the second cube vertical positioning surface of the vertical positioning block. After re-place the cube into the tooling, tighten the first cube side set screws and the second cube side set screws at the same time to ensure that the two vertical surfaces of the cube are aligned with the first cube vertical positioning surface and the second cube vertical positioning surface of the vertical positioning block;

[0030] S2.4: Based on the cube reference surface and the first cube vertical positioning surface of the vertical positioning block, the grinding of the four adjacent surfaces can be completed. After completing the grinding of the cube reference surface and its four adjacent surfaces, select two trimmed surfaces of the cube to fit them with the first cube vertical positioning surface and the second cube vertical positioning surface to grind the last surface, and the six surfaces of the cube can be processed.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. Greatly improve batch processing efficiency and production capacity. The existing high-precision cube grinding and polishing technology can only process a single cube at a time, while the tooling of the present invention provides multiple evenly distributed grinding slots through the combination of metal pressing blocks, set screw holders, and vertical positioning blocks to achieve synchronous processing of multiple cubes. The two inner wall surfaces of the V-shaped groove of the vertical positioning block: the first cube vertical positioning surface and the second cube vertical positioning surface provide independent positioning space for each cube, and cooperate with the first cube side set screws, the second cube side set screws and the cube side gaskets and the second cube side gaskets of the set screw holder to ensure that all cubes are stably fixed with high precision during the grinding process. The tooling of the present invention will increase production capacity by more than ten times without sacrificing precision.

[0033] 2. Achieve coordinated control of nanometer-level verticality and flatness to improve batch processing accuracy. Existing technologies rely on repeated manual measurement and adjustment, but this tooling solves this problem through the core structure of a high-precision vertical positioning block: the vertical positioning surface of the first cube and the vertical positioning surface of the second cube are precisely machined to ensure that adjacent positioning surfaces achieve high-precision verticality. The cubes achieve forced vertical alignment through the fitting of dual positioning surfaces, and at the same time cooperate with the altimeter to assist in measurement: when the top pressure screw is screwed in, the height change is monitored based on the raised ring on the top surface of the metal pressure block, so that the bottoms of all cubes are coplanar, ensuring uniform pressure during grinding. This combination of rigid positioning and dynamic leveling allows for simultaneous nanometer-level control of verticality and flatness in batch processing.

[0034] 3. Reduce process time and operational complexity. The high-precision six-sided grinding of cubes in the prior art requires multiple disassembly and repositioning, which is inefficient. The flippable structure and selective locking structure of this tool simplify the process. Loosen the set screws on the side of the first cube or the set screws on the side of the second cube to flip the cube and change the processing surface without disassembling the entire tool. Adaptive locking: According to the number of processed surfaces of the cube, choose to tighten the screws on one side or both sides. For example, the unprocessed surface only needs to be fixed on one side to avoid invalid operations. Due to the unified reference, the grinding process uses the first processed cube reference surface as the reference surface, and the subsequent surfaces can be automatically aligned to avoid repeated measurements. Compared with the prior art, the tool of the present invention greatly reduces the repositioning time and reduces the dependence on the operator's skills.

[0035] 4. Optimize grinding fluid circulation and equipment protection. In existing high-precision cube grinding, liquid splashes can easily contaminate equipment, such as invading threaded holes. This tooling solves this problem through a three-level diversion and liquid storage structure: the concave cover-like structure of the protective cover guides the liquid to its center hole for storage, preventing splashing; the U-shaped liquid guide groove and tool back groove structure: the liquid flows from the center hole through the guide groove into the tool back groove for temporary storage, and slowly seeps into the bottom surface of the cube. Design: The connection surface between the vertical positioning block and the set screw holder is in close contact, providing good sealing, preventing grinding fluid from invading the threaded holes of the metal pressing block. This not only reduces grinding fluid waste and enables internal recycling, but also prevents liquid corrosion of threaded connections, thereby extending the life of the tooling.

[0036] 5. Avoid damage to the workpiece and improve the consistency of the finished product. Direct tightening of existing screws can easily cause indentations on the cube surface. The tooling of the present invention adopts a distributed pressure transmission structure: the top gasket is placed between the top pressure screw of the cube and the cube to disperse the point pressure; the first cube side gasket and the second cube side gasket are higher than the top surface of the protruding cube side gasket placement groove to prevent the cube from colliding with the fixing screw holder. Pressure distribution control: The screw-in amount of the pressure screw on the top of each cube is adjusted by the altimeter to make the protrusion of all cubes consistent, ensuring uniform grinding pressure. The present invention protects the surface integrity of the workpiece in batch processing and greatly improves the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the assembly of the present invention.

[0038] Figure 2 This is a schematic diagram of the assembly of the gasket support plate of the present invention.

[0039] Figure 3 It is a schematic diagram of the working assembly of the present invention.

[0040] Figure 4 This is a schematic diagram of the assembly of the adjusting screw retainer of the present invention.

[0041] Figure 5 Schematic diagram of the assembly of the adjusting screw retainer and the vertical positioning block of the present invention.

[0042] Figure 6 It is a structural schematic diagram of the metal pressing block of the present invention.

[0043] Figure 7 It is a structural schematic diagram of the adjusting screw retainer of the present invention.

[0044] Figure 8 It is a structural schematic diagram of the vertical positioning member of the present invention.

[0045] Figure 9 It is a structural schematic diagram of the gasket support plate of the present invention.

[0046] Figure 10 Schematic diagram of the structure of the protective cover of the present invention.

[0047] In the figure: 1-metal pressure block, 2-fastening screw holder, 3-holder connecting screw, 4-vertical positioning block, 5-vertical positioning block connecting screw, 6-cube, 7-cube top gasket, 8-cube top pressure screw, 9A-first cube side gasket, 9B-second cube side gasket, 10-gasket support plate, 11-cube side fastening screw, 11A-first cube side fastening screw, 11B-second cube side fastening screw, 12-gasket support plate connecting screw, 13-protective cover, 1-1-adjusting screw holder connecting hole, 1-2-vertical positioning piece connecting hole, 1-3-cube upper fastening threaded hole, 1-4-cube upper gasket placement hole, 2-1-fastening screw holder Connecting threaded hole, 2-2-side tightening threaded hole, 2-2A-first side tightening threaded hole, 2-2B-second side tightening threaded hole, 2-3-gasket support plate contact surface, 2-4-cube side gasket placement groove, 2-4A-first cube side gasket placement groove, 2-4B-second cube side gasket placement groove, 2-5-gasket support plate outer ring positioning surface, 2-6-gasket support plate connecting threaded hole, 4-1-vertical positioning piece connecting threaded hole, 4-2A-first cube vertical positioning surface, 4-2B-second cube vertical positioning surface, 4-3-knife retreat groove, 4-4-bottom surface, 4-5-U-shaped liquid guide groove, 10-1-inner ring positioning surface, 10-2-outer ring positioning surface, 10-3-fixed countersunk hole. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] like Figures 1 to 5 The figure shows a tool for precisely controlling the verticality of a cube in batches, comprising: a gasket support plate 10; a set screw holder 2 is provided on the gasket support plate 10; the set screw holder 2 is a cylindrical structure with a hole in the center, and its inner wall is provided with a plurality of right-angled V-shaped grooves for the set screw holder that position two adjacent sides of the cube 6; a vertical positioning block 4 is provided in the set screw holder 2; the vertical positioning block 4 is a cylindrical structure with a hole in the center, and its outer wall is provided with a plurality of right-angled V-shaped grooves for the vertical positioning block that cooperate with the right-angled V-shaped grooves of the set screw holder to position two adjacent sides of the cube 6 on opposite sides; a metal pressing block 1 is provided on the set screw holder 2 and the vertical positioning block 4;

[0050] The two side walls of the right-angled V-shaped groove of the set screw holder are penetrated by a cube side set screw 11. The bottom of the cube side set screw 11 is provided with a cube side gasket 9. By rotating the cube side set screw 11, the cube side gasket 9 can be adjusted to press and position the side wall of the cube 6;

[0051] Several cube top pressure screws 8 are set through the top surface of the metal pressing block 1; the bottom of the cube top pressure screws 8 is provided with a cube top gasket 7; by rotating the cube top pressure screws 8, the cube top gasket 7 can be adjusted to press and position the top surface of the cube 6; a protective cover 13 with a center hole is provided on the top of the metal pressing block 1.

[0052] like Figure 7 As shown: the outer wall of the set screw retainer 2 is provided with a retainer outer wall V-shaped groove, and the two side walls of the retainer outer wall V-shaped groove are vertically penetrated by side tightening threaded holes 2-2; the cube side tightening screws 11 are matched and arranged in the cube side threaded holes 2-2;

[0053] A cube side gasket placement groove 2-4 is provided in the middle of the two side walls of the right-angle V-shaped groove of the set screw retainer, and the cube side gasket placement groove 2-4 is used to place the cube side gasket 9.

[0054] The angle of the V-shaped groove on the outer wall of the retainer is 120°; the cube side gasket 9 is vertically arranged in the cube side gasket placement groove 2-4 and protrudes from the top surface of the cube side gasket placement groove 2-4.

[0055] The cube side gasket placement groove 2-4 has the same width and length as the cube side gasket 9, but its depth is different from that of the first cube side gasket 9A and the second cube side gasket 9B. The first cube side gasket 9A and the second cube side gasket 9B are higher than the cube side gasket placement groove 2-4 to prevent the cube 6 from colliding with the set screw holder 2 after tightening the first cube side set screw 11A and the second cube side set screw 11B.

[0056] The set screw holder right-angled V-groove of the set screw holder 2 is used to provide a slot for the cube 6. The middle of the two inner walls of the internal 90° set screw holder right-angled V-groove are respectively provided with a cube side gasket placement groove 2-4 that passes through from top to bottom. The cube side gasket placement groove 2-4 is used to place the first cube side gasket 9A and the second cube side gasket 9B. The gasket support plate connecting threaded hole 2-6 is provided on the bottom surface of the set screw holder 2 for connecting with the gasket support plate 10; the set screw holder 2 mainly provides uniform side pressure for the cube and ensures that the working position of the gasket 7 on the top of the cube does not shift.

[0057] like Figure 7As shown: the outer wall of the vertical positioning block 4 is provided with two inner walls of the right-angled V-shaped groove of the vertical positioning block, which are the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B respectively. The above positioning surfaces are the core part of the entire tooling and have high-precision verticality requirements; the top surface of the vertical positioning block 4 is radially provided with a U-shaped liquid guide groove 4-5; the U-shaped liquid guide groove 4-5 is connected to the bottom of the right-angled V-shaped groove of the vertical positioning block, and is used to guide the grinding liquid accumulated in the middle to the processing surface of each cube 6. At the same time, a tool retreat groove 4-3 is provided at the bottom of the right-angled V-shaped groove of the vertical positioning block. The tool retreat groove 4-3 is used to prevent interference with the cube 6 on the one hand, and can be used to store liquid flowing into the U-shaped liquid guide groove 4-5 on the other hand.

[0058] A rounded corner is set on the top of the inner wall of the right-angle V-shaped groove of the vertical positioning block to prevent interference with the set screw holder 2. A number of vertical positioning piece connecting threaded holes 4-1 are evenly distributed in a ring on the top of the vertical positioning block 4, which are used to be bolted to the metal pressure block 1; in this tooling, the two inner side walls of the V-shaped groove of each vertical positioning block have high-precision verticality.

[0059] The top surface of the metal pressing block 1 is provided with two inner and outer concentric raised rings with the same width, which is convenient for adjusting the overall accuracy of the metal pressing block 1 later; a number of metal pressing block connection holes are evenly distributed in an annular pattern between the inner and outer concentric raised rings on the top surface.

[0060] like Figure 6 As shown, the metal block connection holes on metal block 1, radially from the outside inward, include: adjustment screw holder connection hole 1-1, cube upper fastening threaded hole 1-3, and vertical positioning piece connection hole 1-2. Adjustment screw holder connection hole 1-1 and vertical positioning piece connection hole 1-2 are countersunk holes. Cube upper gasket placement hole 1-4 is located below cube upper fastening threaded hole 1-3 for receiving cube top gasket 7. Cube upper gasket placement hole 1-4 does not require mating with cube top gasket 7; it only creates space for this placement. This structure provides a certain amount of pressure on the cube and secures vertical positioning block 4 and set screw holder 2. Therefore, the material should be selected from a high-quality material that is resistant to rust.

[0061] like Figure 9 As shown: the protective cover 13 is a concave cover-shaped structure with a hole in the center and a high outer circle and a low inner circle. While protecting the threaded hole of the metal pressing block 1 from being immersed in the grinding liquid, it allows the dripping liquid to flow into the hole in the middle of the tooling for storage; the inner and outer edges of the top of the protective cover 13 are chamfered to prevent scratches when grabbing the protective cover 13.

[0062] The materials of the metal pressure block 1, the tightening screw retainer 2, and the vertical positioning block 4 are all stainless steel; the cube side tightening screw 11 includes: a first cube side tightening screw 11A and a second cube side tightening screw 11B, which are respectively arranged at the bottom of the two cube side gasket placement grooves of the V-shaped groove on the outer wall of the retainer; the side tightening threaded hole 2-2 includes: a first side tightening threaded hole 2-2A and a second side tightening threaded hole 2-2B, which are respectively matched with the first cube side tightening screw 11A and the second cube side tightening screw 11B; the cube side gasket placement groove 2-4 includes: a first cube side gasket placement groove 2-4A and a second cube side gasket placement groove 2-4B, which are respectively arranged on the two inner walls of the V-shaped groove on the outer wall of the retainer; the cube side gasket 9 includes a cube side gasket 9A and a second cube side gasket 9B, which are respectively arranged in the first cube side gasket placement groove 2-4A and the second cube side gasket placement groove 2-4B.

[0063] A method for using a tool for batch precision control of cube verticality, comprising the following steps:

[0064] Step S1: Assembling tooling

[0065] S1.1: With the bottom surface of the vertical positioning block 4 and the set screw holder 2 facing downward, place the vertical positioning block 4 in the set screw holder 2; place the metal pressure block 1 on it and screw in the pressure screw 8 on the top of the cube; use 2 to 3 positioning rods with a diameter smaller than that of the vertical positioning piece connection holes 1-2 to insert them into non-adjacent vertical positioning piece connection holes 1-2 to position the metal pressure block 1 and the vertical positioning block 4; screw in the vertical positioning block connection bolts 5 in the other vertical positioning piece connection holes 1-2. After the vertical positioning block connection bolts 5 have been screwed in the other vertical positioning piece connection threaded holes 4-1, remove the positioning rods and screw in the remaining vertical positioning block connection bolts 5 to securely connect the vertical positioning block 4 to the metal pressure block 1;

[0066] S1.2: Using the same method as in step S1.1, screw the retainer connection screws 3 into the adjustment screw retainer connection holes 1-1 and the set screw retainer connection threaded holes 2-1 to securely connect the set screw retainer 2 to the metal pressing block 1. Turn the fixture over and place the metal pressing block 1 at the bottom.

[0067] S1.3: Place the cube top gasket 7 into the cube upper gasket placement hole 1-4 of the metal pressing block 1; place the first cube side gasket 9A and the second cube side gasket 9B into the first cube side gasket placement groove 2-4A and the second cube side gasket placement groove 2-4B of the set screw holder 2, respectively; locate the gasket support plate 10 and the adjustment screw positioning frame 2 according to their contours, and use the gasket support plate connecting screws 12 to securely connect the gasket support plate 10 to the adjustment screw positioning frame 2; place the cube 6 into the tooling along the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B of the vertical positioning block 4;

[0068] S1.4: Screw first cube side set screw 11A into first side set threaded hole 2-2 of set screw holder 2. Preliminarily tighten first cube side set screw 11A and / or second cube side set screw 11B to secure cube 6 and prevent it from falling.

[0069] S1.5: Turn the tool over again and place it on a plane with high-precision flatness, loosen the first cube side tightening screw 11A and\or the second cube side tightening screw 11B, and then retighten the first cube side tightening screw 11A and\or the second cube side tightening screw 11B according to the processing status. If the cube 6 has not been processed or only one surface has been processed, it is only necessary to tighten the first cube side tightening screw 11A or the second cube side tightening screw 11B to ensure that the cube 6 is in close contact with the first cube vertical positioning surface 4-2A of the vertical positioning block 4; if two or more surfaces have been processed, it is necessary to tighten the first cube side tightening screw 11A and the second cube side tightening screw 11B respectively to ensure that the processed surface is in close contact with the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B of the vertical positioning block 4;

[0070] S1.6: Remove the altimeter and place the pointer on the raised ring on the top surface of the metal block 1. Screw in the pressure screw 8 on the top of the cube while observing the change in the altimeter value. When the altimeter value changes, it means that the cube 6 is not coplanar with the bottom surface of the tooling. Then, adjust the screwing depth of the pressure screw 8 on the top of each cube according to the altimeter data at different positions and the thickness of the cube 6 required to be removed during this processing. Finally, make the entire tooling achieve high-precision parallelism to ensure that each cube is in the same initial state during grinding;

[0071] S2: Grinding cube: Place the device on a ring polishing machine for grinding, or place it on a grinding plate for manual grinding;

[0072] S2.1: All faces of cube 6 need to be trimmed for perpendicularity. In this case, in assembly step S1.5, only the first cube side set screws 11A and the second cube side set screws 11B need to be tightened. Since all faces have not been trimmed, a cube reference surface must be trimmed in this step to serve as a reference for machining the subsequent faces.

[0073] S2.2: After the cube 6 reference surface is ground, remove the cube 6 and place it into the fixture, aligning the trimmed cube reference surface with the first cube vertical positioning surface 4-2A of the vertical positioning block 4. Tighten only the first cube side set screw 11A, and perform a second round of grinding and trimming. After this round of grinding and trimming, two trimmed, mutually perpendicular surfaces are obtained.

[0074] S2.3: After completing the trimming of the two adjacent surfaces, keep the cube reference surface aligned with the first cube vertical positioning surface 4-2A of the vertical positioning block 4, rotate the cube 6 with the intersection of the two surfaces as the center axis, and then place it. At this time, align the surface to be trimmed with the second cube vertical positioning surface 4-2B of the vertical positioning block 4. After putting the cube 6 back into the tooling, tighten the first cube side set screw 11A and the second cube side set screw 11B at the same time to ensure that the two vertical surfaces of the cube 6 are aligned with the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B of the vertical positioning block 4;

[0075] S2.4: Based on the cube reference surface and the first cube vertical positioning surface 4-2A of the vertical positioning block, the grinding of the four adjacent surfaces can be completed. Since the same reference is used, the grinding results of these four surfaces are all related to the cube reference surface, avoiding error transmission; after completing the grinding of the cube reference surface and its four adjacent surfaces, it is only necessary to select the two trimmed surfaces of the cube 6 and fit them with the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B to perform the grinding of the last surface, and the six surfaces of the cube 6 can be processed.

[0076] Each time you reposition the cube, you can first flip the tooling over, loosen the first cube side set screws 11A and the second cube side set screws 11B, flip the cube 6, preliminarily tighten the first cube side set screws 11A or the second cube side set screws 11B, and then repeat steps 5 and 6. Steps 5 and 6 are interchanged. The first cube side set screws 11A and the second cube side set screws 11B must first be tightened to ensure full contact between the cube 6 and the vertical positioning member 4 before screwing in the cube top pressure screw 8. After completing the altimeter adjustment in step 6, screwing in the first cube side set screws 11A and the second cube side set screws 11B may change the height of the entire tooling, and in this case, the state of the cube top pressure screw 8 must be readjusted.

[0077] When the tooling is in operation, the grinding liquid drips into the tooling from the top. Since the protective cover 13 is a concave cover-like structure with a hole in the center, the grinding liquid will flow into the hole in the middle and be stored. The grinding liquid will then flow along the U-shaped liquid guide groove 4-5 of the vertical positioning block 4 to the undercut groove 4-3 of the vertical positioning block 4. The undercut groove 4-3 acts as a liquid storage. The grinding liquid evenly seeps into the bottom surface of the cube 6 from the bottom of the undercut groove 4-3 to replenish the grinding liquid. At the same time, except for the surface of the tooling that is in close contact with the cube 6, the remaining parts with gaps can be used for liquid storage. During the process of the grinding liquid flowing from the U-shaped liquid guide groove 4-5 above the vertical positioning block 4, entering the undercut groove 4-3, and then seeping into the bottom surface of the cube 6, the grinding liquid has a flow channel, and the part connections in the channel are in a close contact state, ensuring that the grinding liquid will not flow to other places and ensuring the continuous reliability of the connection.

[0078] All contact surfaces of the set screws between cube 6 and the tooling are equipped with gaskets to prevent damage to the surface of cube 6 and to disperse the pressure generated by the set screws. The top gasket 7 of the cube has no shape requirements; it only needs to be the same size as the gasket placement holes 1-4 of the metal pressure block 1. The first and second side gaskets 9A and 9B of the cube are placed on the gasket support plate 10. They also only contact and do not connect. After the first and second side gaskets 9A and 9B are respectively placed in the first and second side gasket placement slots 2-4A and 2-4B of the set screw holder 2, the first and second side gaskets 9A and 9B protrude relative to the top surface of the set screw holder 2, thus ensuring that cube 6 does not come into contact with the set screw holder 2. The cube top gasket 7 and the first cube side gasket 9A and the second cube side gasket 9B are all tightened by set screws to provide sufficient pressure for the cube. The material should be selected with a certain toughness to facilitate pressure dispersion.

[0079] After the assembly is completed, since the metal pressure block 1, the set screw holder 2, and the vertical positioning block 4 have been rigidly connected with bolts, the cube top pressure screw 8 is adjusted at this time. As the cube top pressure screw 8 is screwed in, the remaining parts are tightened, and the first cube side gasket 9A and the second cube side gasket 9B will not drop as the position of the cube 6 drops due to the support of the gasket support plate 10; at this time, the altimeter is placed on the metal pressure block 1, and the cube top pressure screw 8 is screwed in at the same time, and the value change of the altimeter is observed. By constantly switching the screwed-in cube top pressure screw 8 and the position of the altimeter, it is possible to ensure that only the cube 6 is in contact with the grinding plate in the entire tooling before processing while ensuring the parallelism of the entire tooling.

[0080] During machining, the number of side set screws 11 to tighten is determined based on the machined surface of cube 6. For example, if only one surface is being machined, only one side set screw 11 is tightened to complete the side fixation, as the other surface is unmachined and cannot align with the side surface. If multiple surfaces are already machined, both side set screws 11 can be tightened, as the machined surface will now completely align with the inner wall of the V-shaped groove of vertical positioning block 4. By continuously adjusting the set screws and the positioning surfaces, the verticality of the six surfaces can be adjusted and the parallelism accuracy can be guaranteed.

[0081] A tool for batch precision control of the verticality of cubes in this embodiment consists of a metal pressure block 1, a set screw retainer 2, a retainer connecting screw 3, a vertical positioning block 4, a vertical positioning block fixing bolt 5, a cube top gasket 7, a cube top pressure screw 8, a cube side gasket 9, a gasket support plate 10, and a cube side set screw 11.

[0082] The material of the metal pressing block 1 is stainless steel, which is rust-proof and has a certain weight, so it can provide considerable pressure for the cube 6. The upper gasket placement hole 1-4 of the lower cube is set to be circular with a depth of 3mm. The upper tightening threaded hole 1-3 of the cube is an M5×0.8 through hole, and the bottom of the thread is the upper gasket placement hole 1-4 of the cube; the adjustment screw holder connection hole 1-1 and the vertical positioning piece connection hole 1-2 are countersunk holes with a diameter of M5; among them, the adjustment screw holder connection hole 1-1, the vertical positioning piece connection hole 1-2 and the upper tightening threaded hole 1-3 of the cube are all 12 evenly distributed in the metal pressing block 1, and the circles formed by the adjustment screw holder connection hole 1-1, the vertical positioning piece connection hole 1-2 and the center of the metal pressing block 1 have the same center, and the upper tightening threaded hole 1-3 of the cube is located on the angle bisector of the angle between the center of the two adjacent adjustment screw holder connection holes 1-1 and the center of the metal pressing block 1, and is staggered with the two adjacent adjustment screw holder connection holes 1-1. Two annular protrusions are provided on the inner and outer circles of the top of the metal pressing block 1 , each with a width of 4 mm to facilitate subsequent trimming of the metal pressing block 1 .

[0083] The set screw holder 2 is a structure formed by cutting out the inner and outer V-grooves of a circular ring. The overall structure is centrally symmetrical and made of stainless steel. The set screw holder connecting threaded hole 2-1 is an M5×0.8 threaded hole, which is used to be fixedly connected to the metal pressure block 1. There are 12 90° set screw holder right-angled V-grooves evenly distributed in the inner ring to provide a placement space for the cube 6. Rectangular cube side gasket placement grooves that pass through from top to bottom are cut out in the side walls of the right-angled V-grooves of the set screw holder. The width of these rectangular cube side gasket placement grooves is 10mm, the length is 18mm, and the depth is 2mm. The length and width of the first cube side gasket 9A and the second cube side gasket 9B are the same as those of the cube side gasket placement grooves. The side walls of the slots are uniformly sized, each 3mm high. When placed in the set screw holder's right-angled V-groove, they protrude relative to the top surface of the set screw holder's right-angled V-groove to prevent interference between the cube 6 and the set screw holder 2. The bottom of the set screw holder 2 is designed with six gasket support plate connection threaded holes 2-6 for connection to the gasket support plate 10. The side walls of the set screw holder 2 are provided with side tightening threaded holes 2-2, which are M5×0.8 through holes. Because drilling holes in a circle is difficult to position, a 120° V-groove is cut into the outer wall of the holder. This V-groove is perpendicular to the first side tightening threaded hole 2-2A and the second side tightening threaded hole 2-2B to facilitate drilling during subsequent processing. The function of the set screw holder 2 is to provide pressure for grinding, tighten the set screw holder 2 and the vertical positioning block 4 to prevent relative movement between the two, and align the upper surface of the cube 6, thereby ensuring that the lower surface of the cube 6 is on the same grinding plane.

[0084] The outer wall of the vertical positioning block 4 is provided with a vertical positioning block V-shaped groove; stainless steel material is used; 12 M5×0.8 connecting threaded holes 4-1 are evenly distributed on its upper part, which are blind holes with a depth of 10mm. The blind holes are provided to prevent the grinding fluid from flowing up along the hole during grinding and accumulating in the threaded hole, which eventually affects the quality of the threaded connection; the vertical positioning piece connecting threaded hole 4-1 is used to connect the vertical positioning block 4 with the metal pressing block 1; the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B are used to provide positioning for the cube 6, and the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B are used to provide positioning for the cube 6. The first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B have high-precision perpendicularity with the upper and lower surfaces of the vertical positioning block 4. During processing, the cube 6 needs to fit with the first cube vertical positioning surface 4-2A and the second cube vertical positioning surface 4-2B to ensure the grinding quality; the bottom of the vertical positioning block V-shaped groove is provided with a tool backing groove 4-3, which is used to prevent the cube 6 from interfering with the vertical positioning block 4 at the tooth root when it cooperates, and the tool backing groove 4-3 can play a certain role in storing liquid; its U-shaped liquid guide groove 4-5 is to guide the grinding liquid stored in the middle to the groove for processing the cube 6. The function of the vertical positioning block 4 is to provide positioning for the cube 6. Only when the vertical positioning block V-shaped groove and the cube 6 fit together can the final grinding quality be guaranteed. The vertical positioning block 4 is the core component of the entire tooling, and the flatness and verticality of the entire part have high precision requirements.

[0085] The shim support plate 10 is a centrally symmetrical structure; its contour matches the bottom of the set screw holder 2. The contours of the inner and outer sidewalls of the shim support plate 10 respectively position the vertical positioning block 4 and the set screw holder 2. Shim support plate connecting screws 12 secure the shim support plate 10 to the set screw holder 2. The shim support plate 10 primarily supports the first and second cube side shims 9A, 9B, preventing them from falling within the tooling.

[0086] The protective cover 13 is designed to ensure that the grinding liquid does not penetrate into the hole of the metal pressing block 1, which will eventually affect the quality of the threaded connection; it is a concave cover-shaped structure with a hole in the center, with a higher outer ring and a lower inner ring, so that the grinding liquid dripped into the upper part of the tooling can be introduced into the hole in the middle of the tooling; the protective cover 13 has no matching relationship with the metal upper cover 1, and the protective cover 13 is ensured by the raised side walls of the inner and outer rings that the protective cover 13 will not be thrown off during work.

[0087] The tooling is assembled according to the following process:

[0088] All parts should be cleaned before assembly to ensure that there are no impurities that may affect the grinding results.

[0089] The present embodiment provides a tool and method for using the tool for batch precision control of the verticality of cubes. The parts used in the tool are small in size and easy to carry and use. Twelve grinding slots can be provided for large-scale high-precision vertical grinding. Tight positioning from multiple directions ensures the stability of the cube 6 during processing. The vertical positioning block 4 always maintains extremely high precision between each surface, which can ensure that the ground cube 6 also has extremely high precision verticality, flatness, and parallelism. A cube top gasket 7 is set under the cube top pressure screw 8 to ensure that the pressure of the cube top pressure screw 8 will not damage the surface quality of the cube 6. The vertical grinding of all faces of the cube 6 can be achieved by continuously adjusting the grinding surface, and a certain degree of parallelism accuracy can be guaranteed while controlling the verticality accuracy. The tool can place the cube 6 on a ring polishing machine for automatic ring polishing, or it can be placed on a grinding plate for manual grinding. The protective cover 13 is used Prevent grinding fluid from entering the threaded hole and affecting the connection quality of the thread; the grinding fluid drips from the protective cover 13 above, flows into the hole in the middle of the tooling along the recessed part of the protective cover 13 for storage, and then flows from the U-shaped liquid guide groove 4-5 of the vertical positioning block 4 to the undercut 4-3 for small-scale storage, and at the same time seeps into the bottom of the cube 6 from below. The grinding fluid seeping from the bottom of the cube 6 will also be stored on a small scale in the gap between the vertical positioning block 4 and the set screw holder 2, thereby realizing the internal reuse of the liquid, and the excess part will seep out of the tooling and enter the external ring polishing machine liquid circuit circulation; and the entire liquid circuit will not affect the connection of the rest of the tooling, and the entire surface from the U-shaped liquid guide groove 4-5 to the undercut 4-3 is in a close contact state, which will not cause the liquid to flow between the metal pressing block 1 and the vertical positioning block 4. In the undercut 4-3, the liquid will flow directly to the bottom of the cube 6 and will not accumulate too much to affect the threaded connection of the rest of the parts. The cube 6 and the tooling are in the same plane during assembly, and then the protrusion of the cube 6 relative to the tooling is controlled by screwing the pressure screw 8 on the top of the cube into the depth, and the protrusion height of the cube 6 is measured and adjusted using an altimeter, so as to achieve quantitative removal of the cube 6 and ensure that the cube 6 is under the same grinding pressure during grinding.

[0090] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tool for batch precision control of cube verticality, characterized by: include: A gasket support plate (10); a set screw holder (2) is provided on the gasket support plate (10); the set screw holder (2) is a centrally-hole columnar structure, and a plurality of set screw holder right-angled V-shaped grooves are provided on the inner wall of the set screw holder on two adjacent sides of the positioning cube (6); a vertical positioning block (4) is provided in the set screw holder (2); the vertical positioning block (4) is a centrally-hole columnar structure, and a plurality of vertical positioning block right-angled V-shaped grooves are provided on the outer wall of the set screw holder that cooperate with the positioning cube (6) with the right-angled V-shaped grooves of the set screw holder; a metal pressing block (1) is provided on the set screw holder (2) and the vertical positioning block (4); The two side walls of the right-angle V-shaped groove of the set screw holder are penetrated by a cube side set screw (11), and a cube side gasket (9) is provided at the bottom of the cube side set screw (11). The cube side gasket (9) can be adjusted to press and position the side wall of the cube (6) by rotating the cube side set screw (11); A plurality of cube top pressure screws (8) are provided on the top surface of the metal pressure block (1); a cube top gasket (7) is provided at the bottom of the cube top pressure screw (8); the cube top gasket (7) is driven by rotating the cube top pressure screw (8) to adjustably press and position the top surface of the cube (6); a protective cover (13) with a central hole is provided on the top of the metal pressure block (1); a V-shaped groove is provided on the outer wall of the fixing screw retainer (2), and side fixing threaded holes (2-2) are vertically provided on the two inner side walls of the V-shaped groove of the retainer; and the cube side fixing screw (11) is provided in the side fixing threaded hole (2-2); A cube side gasket placement groove (2-4) is provided in the middle of the two inner side walls of the right-angled V-shaped groove of the set screw retainer, and the cube side gasket placement groove (2-4) is used to place the cube side gasket (9); the angle of the V-shaped groove on the outer wall of the retainer is 120 degrees; the cube side gasket (9) is vertically arranged in the cube side gasket placement groove (2-4) and protrudes from the top surface of the cube side gasket placement groove (2-4); the vertical positioning block (4) is provided on the outer wall of the vertical positioning block (4) The two inner side walls of the V-shaped groove are respectively a first cubic vertical positioning surface (4-2A) and a second cubic vertical positioning surface (4-2B); a U-shaped liquid guide groove (4-5) is provided on the top surface of the vertical positioning block (4) along the radial direction; the U-shaped liquid guide groove (4-5) is connected to the bottom of the right-angle V-shaped groove of the vertical positioning block, and a tool withdrawal groove (4-3) is provided at the bottom of the right-angle V-shaped groove of the vertical positioning block; the metal pressure block (1), the set screw retainer (2), and the vertical positioning block (4) are all made of stainless steel; The cube side tightening screw (11) comprises: a first cube side tightening screw (11A) and a second cube side tightening screw (11B), which are respectively arranged at the bottoms of two cube side gasket placement grooves of the V-shaped groove on the outer wall of the retainer; the side tightening threaded hole (2-2) comprises: a first side tightening threaded hole (2-2A) and a second side tightening threaded hole (2-2B), which are respectively matched and connected with the first cube side tightening screw (11A) and the second cube side tightening screw (11B); the cube side gasket placement groove (2-4) comprises: a first cube side gasket placement groove (2-4A) and a second cube side gasket placement groove (2-4B), which are respectively arranged on the two inner side walls of the V-shaped groove on the outer wall of the retainer; the cube side gasket (9) comprises a first cube side gasket (9A) and a second cube side gasket (9B), which are respectively arranged in the first cube side gasket placement groove (2-4A) and the second cube side gasket placement groove (2-4B).

2. The tool for batch precise control of cube verticality according to claim 1, characterized in that: A rounded corner is provided on the top of the inner wall of the right-angled V-shaped groove of the vertical positioning block. A plurality of vertical positioning piece connection threaded holes (4-1) are evenly distributed in an annular pattern on the top of the vertical positioning block (4) for bolt connection with the metal pressing block (1).

3. The tool for batch precise control of cube verticality according to claim 2, characterized in that: The top surface of the metal pressing block (1) is provided with two inner and outer concentric raised rings; a plurality of metal pressing block connection holes are evenly distributed annularly between the inner and outer concentric raised rings on the top surface.

4. The tool for batch precision control of cube verticality according to claim 3, characterized in that: The metal pressing block connection holes on the metal pressing block (1) include, radially from outside to inside, an adjusting screw holder connection hole (1-1), a cube upper fastening threaded hole (1-3), and a vertical positioning piece connection hole (1-2), wherein the adjusting screw holder connection hole (1-1) and the vertical positioning piece connection hole (1-2) are countersunk holes; a cube upper gasket placement hole (1-4) is provided at the bottom of the cube upper fastening threaded hole (1-3) for placing a cube top gasket (7).

5. The tool for batch precise control of cube verticality according to claim 4, characterized in that: The protective cover (13) is a concave cover-shaped structure with a hole in the center and a high outer circle and a low inner circle. The inner and outer circle edges of the top of the protective cover (13) are chamfered.

6. A method for using the tool for batch precision control of cube verticality according to claim 5, characterized in that: The following steps are involved: Step S1: Assembling tooling S1.1: With the bottom surface of the vertical positioning block (4) and the set screw holder (2) facing downwards, place the vertical positioning block (4) in the set screw holder (2); place the metal pressure block (1) on it and screw in the pressure screw (8) on the top of the cube; use 2 to 3 positioning straight rods with a diameter smaller than that of the vertical positioning piece connection holes (1-2) to insert into the non-adjacent vertical positioning piece connection holes (1-2) to position the metal pressure block (1) and the vertical positioning block (4); screw in the vertical positioning block connection bolts (5) in the other vertical positioning piece connection holes (1-2); after the vertical positioning block connection bolts (5) have been screwed into the other vertical positioning piece connection threaded holes (4-1), remove the positioning straight rods and screw in the remaining vertical positioning block connection bolts (5) to securely connect the vertical positioning block (4) and the metal pressure block (1); S1.2: Screw the retainer connection screw (3) into the adjusting screw retainer connection hole (1-1) and the set screw retainer connection threaded hole (2-1) to securely connect the set screw retainer (2) to the metal pressing block (1); turn over the tooling and place the metal pressing block (1) at the bottom; S1.3: Place the top gasket (7) of the cube into the upper gasket placement hole (1-4) of the metal pressing block (1); place the first cube side gasket (9A) and the second cube side gasket (9B) into the first cube side gasket placement groove (2-4A) and the second cube side gasket placement groove (2-4B) of the set screw holder (2) respectively; locate the gasket support plate (10) and the set screw holder (2) according to their contours, and use the gasket support plate connecting screws (12) to fix the gasket support plate (10) and the set screw holder (2); place the cube (6) into the tooling along the first cube vertical positioning surface (4-2A) and the second cube vertical positioning surface (4-2B) of the vertical positioning block (4); S1.4: Screw the first cube side set screw (11A) into the first side set threaded hole (2-2A) of the set screw holder (2), and preliminarily tighten the first cube side set screw (11A) and / or the second cube side set screw (11B) to secure the cube (6) and prevent the cube (6) from falling; S1.5: Turn the tool over again and place it on a plane with high-precision flatness, loosen the first cube side set screw (11A) and\or the second cube side set screw (11B), and then retighten the first cube side set screw (11A) and\or the second cube side set screw (11B) according to the processing status. If the cube (6) has not been processed or only one surface has been processed, it is only necessary to tighten the first cube side set screw (11A) or the second cube side set screw (11B) to ensure that the cube (6) is in close contact with the first cube vertical positioning surface (4-2A) of the vertical positioning block (4); if two or more surfaces have been processed, it is necessary to tighten the first cube side set screw (11A) and the second cube side set screw (11B) respectively to ensure that the processing surface is in close contact with the first cube vertical positioning surface (4-2A) and the second cube vertical positioning surface (4-2B) of the vertical positioning block (4); S1.6: Take out the altimeter, place the pointer on the raised ring on the top surface of the metal pressing block (1), and screw in the pressure screw (8) on the top of the cube while observing the change in the altimeter value. When the altimeter changes, it means that the cube (6) is not coplanar with the bottom surface of the tooling. Then, according to the altimeter data at different positions and the thickness of the cube (6) required to be removed during this processing, adjust the screwing depth of the pressure screw (8) on the top of each cube, and finally make the entire tooling achieve high-precision parallelism to ensure that each cube is in the same initial state during grinding; S2: Grinding cube: Place the device on a ring polishing machine for grinding, or place it on a grinding plate for manual grinding; S2.1: Tighten the first cube side set screw (11A) and the second cube side set screw (11B) to trim a cube reference surface, which will serve as the reference for the subsequent surface machining; S2.2: When the cube reference surface of the cube (6) is ground, the cube (6) is taken out, and the trimmed cube reference surface is placed in the tooling so as to fit in with the first cube vertical positioning surface (4-2A) of the vertical positioning block (4), and only the first cube side set screw (11A) is tightened, and a second round of grinding and trimming is performed; after grinding and trimming, two trimmed mutually perpendicular surfaces are obtained; S2.3: After finishing the two adjacent faces, keep the cube reference surface and the first cube vertical positioning surface (4-2A) of the vertical positioning block (4) in contact with each other, rotate the cube (6) with the intersection of the two faces as the center axis and place it, and then fit the face to be trimmed with the second cube vertical positioning surface (4-2B) of the vertical positioning block (4), put the cube (6) back into the fixture, and tighten the first cube side set screw (11A) and the second cube side set screw (11B) at the same time to ensure that the two vertical faces of the cube (6) fit with the first cube vertical positioning surface (4-2A) and the second cube vertical positioning surface (4-2B) of the vertical positioning block (4); S2.4: Based on the cube reference surface and the first cube vertical positioning surface (4-2A) of the vertical positioning block, the grinding of the four adjacent surfaces can be completed. After the grinding of the cube reference surface and its four adjacent surfaces is completed, the two trimmed surfaces of the cube (6) are selected to fit with the first cube vertical positioning surface (4-2A) and the second cube vertical positioning surface (4-2B) to carry out the grinding of the last surface, thereby completing the processing of the six surfaces of the cube (6).

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