High-precision five-axis linkage numerical control grinding machine

Abstract

The invention discloses a high-precision five-axis linkage numerical control grinding machine, and relates to the technical field of numerical control grinding machines, and the high-precision five-axis linkage numerical control grinding machine is technically characterized by comprising a five-axis numerical control grinding machine body, sliding grooves are symmetrically formed in a rotating table of an A axis of the five-axis numerical control grinding machine body, a suspended end limiting structure is arranged on the sliding grooves, and the suspended end limiting structure comprises a supporting base, a pressing piece and a V-shaped piece; according to the five-axis numerical control grinding machine, a suspended end limiting structure comprising a supporting base, a pressing piece and a V-shaped piece is arranged on the A-axis rotating table of the five-axis numerical control grinding machine body, closed triangular supporting is formed, shaking of a long and thin drill bit in the rotating grinding process is effectively reduced, and the machining precision is improved; meanwhile, the design of the V-shaped plate and the semicircular hollow V-shaped cover reduces the contact surface between the drill bit and the supporting structure, and friction loss is reduced; the lubricating system sprays lubricating oil to further reduce friction and protect the drill; the air cooling system reduces the drill bit temperature and improves the grinding quality; the lubricating oil circulating system realizes cyclic utilization of lubricating oil, and is environment-friendly and economical.

Description

Technical Field

[0001] The present invention relates to the technical field of CNC grinding machines, in particular to a high-precision five-axis linkage CNC grinding machine. Background Art

[0002] As a high-precision, high-efficiency cutting-edge equipment, five-axis linkage CNC machine tools can achieve fine processing of complex surfaces and special-shaped structures by synchronously controlling the movement of the tool in five directions. They have irreplaceable strategic value in the manufacturing of key components such as aerospace impeller blades, ship propellers, generator and turbine rotors in the energy field, and heavy machinery diesel engine crankshafts.

[0003] However, some existing equipment has significant defects when processing slender drill bits: when the drill bit is clamped at one end at the B-axis output end for grinding, the drill bit is prone to shaking during rotational grinding due to the lack of radial support on the overhanging end, resulting in poor machining accuracy. Therefore, we propose a new type of high-precision five-axis linkage CNC grinding machine. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-precision five-axis linkage CNC grinding machine, which can effectively solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a high-precision five-axis linkage CNC grinding machine, comprising a five-axis CNC grinding machine body, wherein the rotating table of the A-axis of the five-axis CNC grinding machine body is symmetrically provided with slide grooves, and the slide grooves are provided with a suspended end limit structure.

[0006] The suspended end limiting structure includes a support seat, a pressing piece and a V-piece.

[0007] The V-piece includes a concave frame, the inner wall of the concave frame is fixedly installed with a V-shaped plate, the V-shaped plate is provided with a plurality of V-shaped pipe grooves, the inner cavity of the V-shaped pipe groove is fixedly installed with a V-shaped pipe, the top of the V-shaped pipe is fixedly installed with a plurality of nozzles, the top of the V-shaped pipe groove is fixedly installed with a semicircular hollow V-shaped cover adapted to the V-shaped pipe groove, the two ends of the semicircular hollow V-shaped cover are sealed, the semicircular hollow V-shaped cover is provided with a plurality of through holes, the nozzles are located in the inner cavity of the through holes, and the nozzles correspond to the through holes one by one.

[0008] A plurality of oil delivery branches penetrating the V-plate are fixedly mounted on the ends of both top ends of the V-shaped pipe, and an oil delivery main pipe communicating with the inner cavity of the oil delivery branch pipe is fixedly mounted on the oil inlet end of the oil delivery branch pipe.

[0009] Preferably, a bend pipe communicating with the inner cavity of the oil main pipe is fixedly installed on the oil main pipe, a pump body is fixedly installed at the middle section of the bend pipe, an oil tank is fixedly installed at the oil inlet end of the bend pipe, and a filter is fixedly installed at the center of the top of the oil tank; a partition plate is provided at the bottom of the oil tank, and the partition plate is fixedly installed on the inner wall of the concave frame; a plurality of oil return holes are opened at the angle of the V-plate, and the oil return holes are located directly above the filter.

[0010] Preferably, air guide covers are fixedly installed on the ends of both top ends of the semicircular hollow V-shaped cover, and several air supply branch pipes passing through the concave frame are fixedly installed on the bottom of the air guide cover, and the air inlet ends of the air supply branch pipes are fixedly installed with an air supply main pipe, and the air inlet end of the air supply main pipe is fixedly installed with an L-tube passing through the partition plate, and the air inlet end of the L-tube is provided with a double-outlet fan fixedly installed on the bottom of the inner cavity of the concave frame, and the output end of the double-outlet fan is fixedly connected to the air inlet end of the L-tube; the two sides of the concave frame are bolted with a cover plate adapted to the concave frame, and the cover plate is provided with ventilation slots.

[0011] Preferably, the support seat includes a base slidably connected to the inner cavity of the slide groove, a recess is fixedly installed on the base, a V-piece mounting seat is fixedly installed in the inner cavity of the recess, an extrusion block is provided on one side of the V-piece mounting seat, a screw rod is threadedly connected to the extrusion block, a threaded hole is provided on the V-piece mounting seat, the end of the screw rod is located in the threaded hole and is threadedly connected to the V-piece mounting seat.

[0012] Preferably, the pressing member comprises a cylinder fixedly mounted on a base, a pressing block is fixedly mounted on an output end of the cylinder, and a rubber pad is threadedly connected to the pressing block.

[0013] Preferably, a drill fixing part is fixedly installed on the output end of the B-axis of the five-axis CNC grinder body, and the drill fixing part includes a drill fixing sleeve fixedly installed on the output end of the B-axis of the five-axis CNC grinder body, and four drill clamping rods are fixedly installed on the drill fixing sleeve, and the angle between two adjacent drill clamping rods is ninety degrees.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The provision of a suspended end stopper effectively addresses the problem of slender drill bits prone to wobble during rotary grinding: This invention incorporates symmetrical slideways on the rotary table of the A-axis of the five-axis CNC grinding machine body, and incorporates a suspended end stopper within the slideway. This structure, comprising a support seat, a pressure piece, and a V-shaped member, forms a closed triangular support structure with a V-plate and rubber pad, providing effective radial support for the suspended end of the drill bit. This significantly reduces the likelihood of drill bit wobble during rotary grinding, thereby improving machining accuracy.

[0016] 2. By setting up the V-plate and the semicircular hollow V-cover, the contact area between the drill bit and the support structure is reduced, and the friction loss is reduced: the design of the V-plate reduces the contact area between the drill bit and the support structure. At the same time, the semicircular hollow V-cover further reduces the direct contact between the drill bit and the V-plate, thereby reducing friction, reducing the wear of the drill bit during the grinding process, and extending the service life of the drill bit.

[0017] 3. A lubrication system further reduces friction during grinding and protects the drill bit: The present invention incorporates a lubrication system within the V-shaped component, comprising an oil tank, a pump body, an oil main pipe, oil branch pipes, a V-shaped pipe, and a nozzle. During the grinding process, lubricating oil is pumped out by the pump body, transported to the V-shaped pipe through the oil pipe, and sprayed from the nozzle onto the semicircular hollow V-shaped cover. This effectively reduces friction between the semicircular hollow V-shaped cover and the drill bit during grinding, protecting the drill bit from excessive wear.

[0018] 4. The air cooling system, including a dual-outlet blower, an L-shaped pipe, a main air supply pipe, branch air supply pipes, and an air guide, reduces the temperature of the drill bit during the grinding process and improves the grinding quality. The present invention also incorporates an air cooling system within the V-shaped component, including components such as a dual-outlet blower, an L-shaped pipe, a main air supply pipe, branch air supply pipes, and an air guide. During the grinding process, air generated by the dual-outlet blower is transported through the air supply duct to the air guide, where it blows toward the drill bit mounted on the semicircular hollow V-shaped cover. This effectively reduces the temperature of the drill bit and avoids the problem of excessive temperature affecting the grinding quality.

[0019] 5. The lubricating oil circulation system, including a return oil hole, filter, and oil tank, achieves both environmental and economical oil recycling. The present invention incorporates a lubricating oil circulation system within the V-shaped member. Excess lubricating oil flows under gravity to the lowest point of the V-shaped plate angle, where it falls through the return oil hole onto the filter for filtration. The filtered oil then returns to the oil tank for future use. This design achieves lubricating oil recycling, reduces lubricating oil waste, and is both environmentally friendly and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a complete structural diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the drill bit fixing part of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the suspended end limiting structure of the present invention;

[0023] Figure 4 It is a structural diagram of the V component of the present invention;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the cross-section structure;

[0025] Figure 6 Part of the application Figure 5 Enlarged structural schematic diagram;

[0026] Figure 7 Part of the application Figure 4 Another perspective view of the cross-sectional structure schematic diagram;

[0027] Figure 8 Part of the application V-shaped plate, V-shaped pipe, nozzle and wind scoop structure schematic diagram.

[0028] In the figure:

[0029] 1, five-axis numerical control grinding machine body; 2, sliding groove; 3, suspended end limiting structure; 301, support seat; 3011, base; 3012, concave seat; 3013, V piece mounting seat; 3014, extrusion block; 3015, screw rod; 302, pressing piece; 3021, air cylinder; 3022, pressing block; 3023, rubber pad; 303, V piece; 3031, concave frame; 3032, V-shaped plate; 3033, V-shaped pipe; 3034, nozzle; 3035, semicircular hollow V-shaped cover; 3036, oil delivery branch pipe; 3037, oil delivery main pipe; 3038, elbow; 3039, pump body; 30310, oil tank; 30311, wind scoop; 30312, air supply branch pipe; 30313, air supply main pipe; 30314, L pipe; 30315, double-outlet air blower; 4, drill bit fixing piece; 401, drill bit fixing sleeve; 402, drill bit pressing rod. DETAILED DESCRIPTION

[0030] In the present application, unless otherwise specified, the orientation such as "up, down" is generally directed to the direction shown in the drawing, or to the vertical, perpendicular or gravity direction; Similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right shown in the drawing; "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0031] The present application provides a technical solution:

[0032] Please refer to Figures 1 to 8 A high-precision five-axis linkage numerical control grinding machine, characterized in that it comprises a five-axis numerical control grinding machine body 1, a sliding groove 2 is symmetrically provided on the rotating table of the five-axis numerical control grinding machine body 1A, and a suspended end limiting structure 3 is arranged on the sliding groove 2.

[0033] The suspended end limiting structure 3 comprises a support seat 301, a pressing piece 302 and a V piece 303.

[0034] The V-shaped member 303 includes a concave frame 3031, a V-shaped plate 3032 is fixedly installed on the inner wall of the concave frame 3031, a plurality of V-shaped pipe grooves are opened on the V-shaped plate 3032, a V-shaped pipe 3033 is fixedly installed in the inner cavity of the V-shaped pipe groove, a plurality of nozzles 3034 are fixedly installed on the top of the V-shaped pipe groove, a semicircular hollow V-shaped cover 3035 adapted to the V-shaped pipe groove is fixedly installed on the top of the V-shaped pipe groove, and a semicircular hollow V-shaped cover 3035 is fixedly installed on the top of the V-shaped pipe groove. Both ends of the cover 3035 are sealed, and a number of through holes are opened on the semicircular hollow V-shaped cover 3035. The nozzles 3034 are located in the inner cavity of the through holes, and the nozzles 3034 correspond to the through holes one by one; a number of oil branch pipes 3036 that pass through the V-shaped plate 3032 are fixedly installed on the ends of the two top ends of the V-shaped pipe 3033, and the oil inlet end of the oil branch pipe 3036 is fixedly installed with an oil main pipe 3037 that is connected to the inner cavity of the oil branch pipe 3036.

[0035] During the operation of the CNC grinding machine, the V-piece 303 sprays lubricating oil onto the semicircular hollow V-shaped cover 3035 through the V-shaped plate 3032 on the inner wall of the concave frame 3031 and the V-shaped pipe groove thereon, in conjunction with the V-shaped pipe 3033 and the nozzle 3034 during grinding, effectively reducing the friction between the drill bit and the supporting structure and protecting the drill bit; at the same time, the V-shaped pipe 3033 is connected to the oil main pipe 3037 through the oil branch pipe 3036 to ensure the supply of lubricating oil. Its structural design not only supports the drill bit but also reduces wear, playing a key role in improving processing accuracy and the service life of the drill bit.

[0036] See also Figure 5 and Figure 7 A bend pipe 3038 communicating with the inner cavity of the oil main pipe 3037 is fixedly installed on the oil main pipe 3037, a pump body 3039 is fixedly installed at the middle section of the bend pipe 3038, an oil tank 30310 is fixedly installed at the oil inlet end of the bend pipe 3038, and a filter is fixedly installed at the center of the top of the oil tank 30310; a partition plate is provided at the bottom of the oil tank 30310, and the partition plate is fixedly installed on the inner wall of the concave frame 3031; a plurality of oil return holes are opened at the angle of the V-plate 3032, and the oil return holes are located directly above the filter.

[0037] The oil main pipe 3037 is connected to the pump body 3039 and the oil tank 30310 through the elbow 3038. During operation, the pump body 3039 draws the lubricating oil from the oil tank 30310, transports it to the V-shaped pipe 3033 through the oil main pipe 3037, and sprays it onto the drill bit through the nozzle 3034 to reduce friction; the filter screen on the top of the oil tank 30310 filters the return lubricating oil, and the bottom partition plate separates the oil tank from the inside of the concave frame 3031. The oil return hole at the angle of the V-shaped plate 3032 allows excess lubricating oil to flow back to the oil tank 30310. This structure realizes the recycling of lubricating oil, which not only protects the drill bit but also saves costs, and plays an important role in improving processing accuracy and efficiency.

[0038] See also Figures 4 to 8 , air guide covers 30311 are fixedly installed on the ends of both top ends of the semicircular hollow V-shaped cover 3035, and several air supply branch pipes 30312 that pass through the concave frame 3031 are fixedly installed on the bottom of the air guide cover 30311, and the air inlet ends of the air supply branch pipes 30312 are fixedly installed with the air supply main pipe 30313. The air inlet end of the air supply main pipe 30313 is fixedly installed with an L-tube 30314 that passes through the partition plate, and the air inlet end of the L-tube 30314 is provided with a double-outlet fan 30315 fixedly installed on the bottom of the inner cavity of the concave frame 3031, and the output end of the double-outlet fan 30315 is fixedly connected to the air inlet end of the L-tube 30314; the two sides of the concave frame 3031 are bolted with a cover plate that is adapted to the concave frame 3031, and a ventilation slot is provided on the cover plate.

[0039] The air guide covers 30311 installed at the two top ends of the semicircular hollow V-shaped cover 3035 are connected to the dual-outlet fan 30315 through the air supply branch pipe 30312, the air supply main pipe 30313, and the L-tube 30314. During operation, the air generated by the dual-outlet fan 30315 is transported to the air guide covers 30311 through the pipes and blown toward the drill bit to reduce the drill bit temperature during grinding and improve the grinding quality; the ventilation slots on the cover plates on both sides of the concave frame 3031 promote air circulation and assist in heat dissipation. This structure effectively solves the problem of high temperature affecting the processing quality of the drill bit.

[0040] See also Figure 1 , pictures and Figure 3 The support seat 301 includes a base 3011 slidably connected to the inner cavity of the slide groove 2, a recess 3012 is fixedly installed on the base 3011, and a V-piece mounting seat 3013 is fixedly installed in the inner cavity of the recess 3012. An extrusion block 3014 is provided on one side of the V-piece mounting seat 3013, and a screw rod 3015 is threadedly connected to the extrusion block 3014. A threaded hole is opened on the V-piece mounting seat 3013, and the end of the screw rod 3015 is located in the threaded hole and is threadedly connected to the V-piece mounting seat 3013.

[0041] The base 3011 of the support seat 301 is slidably connected in the slide groove 2, and the position can be adjusted according to the length of the drill bit. The V-piece mounting seat 3013 in the recess 3012 is used to fix the V-piece 303. By rotating the screw rod 3015 to push the extrusion block 3014, the V-piece 303 can be tightened to ensure its stability; its working process is to adjust the position of the support seat 301 and fix the V-piece 303, and its function is to form a stable support structure, which together with the pressing piece 302 forms a closed triangular support, effectively reducing the shaking of the slender drill bit during rotary grinding, significantly improving the processing accuracy, and solving the problems of easy shaking of the drill bit and poor processing accuracy in the prior art.

[0042] See 2 and Figure 3The pressing member 302 includes a cylinder 3021 fixedly mounted on the base 3011 , a pressing block 3022 is fixedly mounted on the output end of the cylinder 3021 , and a rubber pad 3023 is threadedly connected to the pressing block 3022 .

[0043] The pressing piece 302 is fixed to the base 3011 of the support seat 301 through the cylinder 3021. During operation, the cylinder 3021 drives the pressing block 3022 to move downward, so that the rubber pad 3023 lightly presses the drill bit, without causing extrusion but forming part of the closed triangular support structure. It works together with the V-piece 303 to effectively limit the movement range of the drill bit, reduce shaking during rotary grinding, and improve processing accuracy.

[0044] See also Figure 1 and Figure 2 The output end of the B axis of the five-axis CNC grinding machine body 1 is fixedly installed with a drill fixing part 4. The drill fixing part 4 includes a drill fixing sleeve 401 fixedly installed at the output end of the B axis of the five-axis CNC grinding machine body 1. Four drill clamping rods 402 are fixedly installed on the drill fixing sleeve 401, and the angle between two adjacent drill clamping rods 402 is ninety degrees.

[0045] The drill bit fixing part 4 installed at the output end of the B axis of the five-axis CNC grinding machine body 1 clamps one end of the drill bit through the drill bit fixing sleeve 401, and is firmly fixed by four drill bit clamping rods 402 distributed at a ninety-degree angle, ensuring that the drill bit is stable and does not shake during operation; its function is to provide a stable clamping base for the drill bit.

[0046] When used specifically, the working principle of the present invention is as follows:

[0047] First, the longer drill bit to be sharpened is clamped and placed on the drill bit holder 4. Specifically, the end of the drill bit is inserted into the drill bit holder sleeve 401, and then the drill bit clamping rod 402 is rotated. The drill bit is firmly fixed to the drill bit holder sleeve 401 through four drill bit clamping rods 402 distributed at a 90-degree angle. Next, the other end of the drill bit is placed on the V-shaped plate 3032. Due to the design of the chute 2 and the base 3011 (the chute 2 and the base 3011 can optionally have a self-locking structure to facilitate the subsequent positioning of the V-shaped plate 3032), the V-shaped plate 3032 can slide horizontally and slide to the end position of the other end of the drill bit according to the length of the drill bit. The V-shaped plate 3032 is customized according to the diameter of the drill bit to ensure optimal adaptability (through programming and debugging technology for the five-axis CNC grinding machine body 1, combined with customized V-piece 303, drill bits with a diameter of less than 0.03 mm can be produced).

[0048] After the V-plate 3032 slides into place, the cylinder 3021 is activated, which moves the pressure block 3022 downward, ensuring that the rubber pad 3023 is in contact with the drill bit without squeezing it. At this point, the V-plate 3032 and the rubber pad 3023 form a closed, equilateral triangle support structure, with the outer surface of the drill bit in contact with both the inner corner of the V-plate 3032 and the rubber pad 3023. This design effectively limits the drill bit's range of motion, firmly securing both ends of the drill bit and significantly reducing the possibility of it wobbling during the rotary grinding process.

[0049] At the same time, the semicircular hollow V-shaped cover 3035 on the V-shaped plate 3032 can reduce the direct contact area between the drill bit and the V-shaped plate 3032, thereby reducing friction and reducing the wear of the drill bit during the grinding process.

[0050] During the grinding process (slow-speed grinding, the grinding tool is mounted on the Z-axis grinding tool mounting seat, which is common knowledge in this field and will not be described in detail), the controller (not shown) provided with the five-axis CNC grinding machine body 1 is used to control the operation of the pump body 3039 (the power supply of the pump body 3039 can be determined according to actual conditions and can be powered by its own power supply or connected to an external power supply). The pump body 3039 draws the lubricating oil from the oil tank 30310, transports it to the oil main pipe 3037 through the bend pipe 3038, then diverts it to the oil branch pipe 3036, and finally transports it to the V-shaped pipe 3033 and sprays it from the nozzle 3034 onto the semicircular hollow V-shaped cover 3035. This design further reduces the friction between the semicircular hollow V-shaped cover 3035 and the drill bit during the grinding process, thereby protecting the drill bit from excessive wear.

[0051] Furthermore, during the grinding process, the dual-outlet blower 30315 is activated. The air generated by the dual-outlet blower 30315 is delivered to the air guide 30311 (with the air outlet of the air guide 30311 facing the semicircular hollow V-shaped cover 3035) via the L-tube 30314, the main air supply pipe 30313, and the branch air supply pipe 30312. This design not only effectively reduces the temperature of the drill bit during grinding, preventing overheating and affecting the grinding quality, but also the air in the air guide 30311 promotes the flow of lubricating oil, distributing it more evenly throughout the semicircular hollow V-shaped cover 3035, further improving lubrication.

[0052] Excess lubricating oil flows under the action of gravity to the lowest point of the angle of the V-shaped plate 3032 and falls directly onto the filter through the oil return hole. After the filter filters the oil, the filtered oil returns to the oil tank 30310 for the next use, realizing the recycling of lubricating oil, which is both environmentally friendly and economical.

[0053] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. A high-precision five-axis CNC grinding machine, characterized in that: It includes a five-axis CNC grinding machine body, wherein the rotating table of the A-axis of the five-axis CNC grinding machine body is symmetrically provided with a slide groove, and a suspended end limit structure is provided on the slide groove; The suspended end limiting structure includes a support seat, a pressing piece and a V piece; The V-piece includes a concave frame, a V-shaped plate is fixedly installed on the inner wall of the concave frame, a plurality of V-shaped pipe grooves are opened on the V-shaped plate, a V-shaped pipe is fixedly installed in the inner cavity of the V-shaped pipe groove, a plurality of nozzles are fixedly installed on the top of the V-shaped pipe, a semicircular hollow V-shaped cover adapted to the V-shaped pipe groove is fixedly installed on the top of the V-shaped pipe groove, both ends of the semicircular hollow V-shaped cover are sealed, a plurality of through holes are opened on the semicircular hollow V-shaped cover, the nozzles are located in the inner cavity of the through holes, and the nozzles correspond to the through holes one by one; A plurality of oil delivery branches penetrating the V-plate are fixedly mounted on the ends of both top ends of the V-shaped pipe, and an oil delivery main pipe communicating with the inner cavity of the oil delivery branch pipe is fixedly mounted on the oil inlet end of the oil delivery branch pipe.

2. A high-precision five-axis CNC grinding machine according to claim 1, characterized in that: An elbow pipe connected to the inner cavity of the oil delivery main pipe is fixedly installed on the oil delivery main pipe, a pump body is fixedly installed at the middle section of the elbow pipe, an oil tank is fixedly installed at the oil inlet end of the elbow pipe, and a filter is fixedly installed at the center of the top of the oil tank; A partition plate is provided at the bottom of the oil tank, and the partition plate is fixedly mounted on the inner wall of the concave frame; A plurality of oil return holes are provided at the angles of the V-plate, and the oil return holes are located just above the filter screen.

3. A high-precision five-axis CNC grinding machine according to claim 2, characterized in that: Air guide covers are fixedly installed on the ends of both top ends of the semicircular hollow V-shaped cover, and several air supply branch pipes passing through the concave frame are fixedly installed on the bottom of the air guide cover. The air inlet ends of the air supply branch pipes are fixedly installed with the air supply main pipe, and the air inlet end of the air supply main pipe is fixedly installed with an L-tube passing through the partition plate. The air inlet end of the L-tube is provided with a double-outlet fan fixedly installed on the bottom of the inner cavity of the concave frame, and the output end of the double-outlet fan is fixedly connected to the air inlet end of the L-tube; the two sides of the concave frame are bolted with a cover plate adapted to the concave frame, and the cover plate is provided with ventilation slots.

4. A high-precision five-axis CNC grinding machine according to claim 1, characterized in that: The support seat includes a base slidably connected to the inner cavity of the slide groove, a recess is fixedly installed on the base, a V-piece mounting seat is fixedly installed in the inner cavity of the recess, an extrusion block is provided on one side of the V-piece mounting seat, a screw rod is threadedly connected to the extrusion block, a threaded hole is provided on the V-piece mounting seat, the end of the screw rod is located in the threaded hole and is threadedly connected to the V-piece mounting seat.

5. A high-precision five-axis CNC grinding machine according to claim 1, characterized in that: The pressing piece comprises a cylinder fixedly mounted on a base, a pressing block fixedly mounted on an output end of the cylinder, and a rubber pad threadedly connected to the pressing block.

6. A high-precision five-axis CNC grinding machine according to claim 1, characterized in that: A drill bit fixing part is fixedly installed on the output end of the B-axis of the five-axis CNC grinder body. The drill bit fixing part includes a drill bit fixing sleeve fixedly installed on the output end of the B-axis of the five-axis CNC grinder body. Four drill bit clamping rods are fixedly installed on the drill bit fixing sleeve. The angle between two adjacent drill bit clamping rods is ninety degrees.

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