Numerically-controlled high-precision numerically-controlled tool for machining automobile parts

Abstract

The invention discloses a numerical control high-precision numerical control tool for machining automobile parts, and relates to the technical field of numerical control tools, the numerical control high-precision numerical control tool comprises a tool apron, and a tool bit and a clamping block which are mounted in the tool apron, and further comprises a blade mounted at the end part of the tool bit, and mounting grooves for mounting the tool bit and the clamping block are formed in two sides of the tool apron; a mounting shaft is fixedly mounted in the middle of the tool apron, and a flow guide assembly used for conveying cooling liquid is mounted in the mounting shaft and the tool apron. The tool apron is arranged, the tool bits are mounted on the two sides of the tool apron through the mounting grooves, the flow guide assembly is arranged in the tool apron, the conveying assembly is arranged in the tool bits, and the flow guide assembly and the conveying assembly can achieve conveying and guiding of cooling liquid so as to achieve spraying of the cooling liquid in the cutting position; and conveying of cooling liquid is completed in the tool apron and the tool bit, the situation that cutting operation is affected by an external nozzle can be effectively avoided, and therefore convenience of numerical control machining is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control tools, and in particular to a numerical control high-precision numerical control tool for machining automobile parts. Background Art

[0002] CNC tools are tools used for cutting in mechanical manufacturing, also known as cutting tools. In a broad sense, cutting tools include both cutting tools and grinding tools; at the same time, "CNC tools" include not only cutting blades, but also accessories such as tool holders and tool bodies. Through the control system of CNC machine tools, the position, speed and cutting parameters of the tool can be accurately controlled to achieve high-precision and high-efficiency automated processing. In the process of processing automotive parts, precision tools are usually required for processing. CNC high-precision tools can provide higher processing accuracy and stability, which is very important for ensuring the quality, accuracy and reliability of parts.

[0003] For example, a CNC tool with the publication number CN110640170B belongs to the technical field of the use of machine-clamped tools in mechanical processing. The CNC tool includes a tool body, a blade and a clamping part, and the clamping part includes a fixing nut, a pressure block for fixing the blade and a hook head for fixing the blade; a mounting through hole is provided at the front end of the tool body, and the mounting through hole is used to insert a screw rod, and the screw rod is provided with a V-shaped groove, and the opening position of the V-shaped groove matches the hook head. The blade and the knife pad under the blade pass through the hook head together and are placed flat in the knife groove of the tool body. A pressure block is inserted at the upper end of the screw rod, and a fixing nut is provided on the pressure block. The invention provides clamping force to the blade from two directions through the hook head and the pressure block to ensure that the blade will not loosen during use, thereby maximizing the service life of the tool. Compared with the previous method of clamping the blade with a single clamping force, when processing the same material and cutting environment, the tool life is extended by an average of two to three months, which significantly improves the tool life and reduces the tool cost in mechanical processing.

[0004] There are some problems in the practical application of the above technical solution. In order to ensure the processing quality during the cutting process of the CNC tool, it is necessary to spray coolant on the cutting position. The above technical solution requires the spraying of coolant through an external nozzle, and the external nozzle needs to move with the tool during use, which is easy to collide with the product and affect the processing. In addition, during the CNC processing process, multiple sets of tools need to be switched. When switching the tools, the nozzle will also cause an impact.

[0005] Therefore, it is necessary to invent a CNC high-precision CNC tool for processing automobile parts to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a high-precision numerically controlled tool for machining automobile parts to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: a numerically controlled high-precision cutting tool for machining automotive parts, including a tool holder, a cutting head and a clamping block installed inside the tool holder, and further including a cutting blade installed at the end of the cutting head; The tool holder is provided with a "C" - shaped structure, and installation grooves for installing the cutting head and the clamping block are opened on both sides of the tool holder. An installation shaft is fixedly installed in the middle of the tool holder, and a diversion component for conveying coolant is installed between the installation shaft and the inside of the tool holder; On one side of the end of the cutting head, a groove for installing the cutting blade is opened, and a conveying component for cooperating with the diversion component to convey coolant is installed inside the cutting head; The clamping block is used to fix the cutting head inside the installation groove, and a limiting component is installed between the clamping block and the cutting head; A fixing component is installed above the cutting blade, and a liquid discharge groove for discharging coolant is opened at the bottom end of the cutting blade.

[0008] Preferably, the diversion component includes a liquid inlet groove, a diversion groove, a connection groove and a sealing ring. The liquid inlet groove is opened inside the tool holder and the installation shaft. The diversion groove is opened at one end of the liquid inlet groove, and the diversion groove is provided with a "J" - shaped structure. The connection grooves are opened at both ends of the diversion groove, and the two connection grooves are respectively opened on the inner walls of the two installation grooves. The sealing ring is fixedly installed at the notch of the connection groove, and a sealing component is installed in the middle of the diversion groove.

[0009] Preferably, the sealing component is used to block the diversion groove. The sealing component includes a sealing seat, a sealing block, a sliding groove, an extension groove, a weight block and a connecting arm. The sealing seat is provided with an annular structure and is fixedly installed in the middle of the diversion groove. The sealing block is inserted and installed in the middle of the sealing seat. The sliding groove is opened on the inner side wall of the diversion groove and corresponds to the sealing block. The extension groove is opened at one end of the sliding groove. The weight block is slidably installed inside the extension groove. The connecting arm is rotatably installed between the weight block and the sealing block through a pin shaft.

[0010] Preferably, the sealing component further includes a square groove and a wedge block for locking the position of the weight block. The square groove is opened on the inner wall of the extension groove. The wedge block is slidably installed inside the square groove. One side of the wedge block is provided with an inclined surface. An adaptation surface corresponding to the inclined surface is opened at one end of the weight block. A locking bolt is rotatably installed at one end of the wedge block, and the locking bolt is rotatably installed on the inner wall of the square groove.

[0011] Preferably, the sealing component further includes an arc - shaped block and a positioning block. The arc - shaped block is fixedly installed at one end of the sealing block and corresponds to the sealing seat. The positioning block is fixedly installed at the other end of the sealing block and is slidably installed inside the sliding groove.

[0012] Preferably, the conveying assembly includes a liquid outlet pipe, an extension pipe, a liquid outlet hole and a connecting pipe, the liquid outlet pipe is opened inside the cutter head, and one end of the liquid outlet pipe extends to the outer wall of the cutter head, the extension pipe is opened inside the cutter head, the liquid outlet hole is opened at the bottom of the groove, and the liquid outlet hole and the liquid outlet pipe are connected through the extension pipe, the connecting pipe is opened inside the cutter head, and one end of the connecting pipe is connected to one end of the liquid outlet pipe, and the other end of the connecting pipe is fixedly installed with a connecting seat.

[0013] Preferably, a strip groove and a circular groove are provided on the lower surface of the blade, one end of the strip groove extends to the inner wall of the drainage groove, and the circular groove is arranged at the other end of the strip groove, and the position of the circular groove corresponds to the liquid outlet.

[0014] Preferably, the fixing assembly is used to fix the position of the blade, and the fixing assembly includes a pin hole, a positioning hole, a positioning seat and a protrusion, the pin hole is opened in the middle of the blade, the positioning hole is opened at one end of the upper surface of the blade, the positioning seat is installed on the top of the cutter head, a positioning bolt is installed through the middle of the positioning seat, and the positioning bolt is threadedly installed on the top of the cutter head, and the protrusion is fixedly installed at the bottom end of the positioning seat, and the protrusion corresponds to the positioning hole.

[0015] Preferably, the limiting assembly comprises a limiting block and a limiting groove, the limiting block is fixedly mounted on the bottom end of the clamping block, and the limiting groove is opened on one side of the cutter head.

[0016] Preferably, the limiting assembly further comprises a limiting hole and a limiting bolt, wherein the limiting hole penetrates through the inner wall of the mounting groove, and one end of the limiting bolt fits with the outer side wall of the clamping block.

[0017] Technical effects and advantages of the present invention: 1. The present invention provides a tool holder, and tool heads are installed on both sides of the tool holder through installation grooves. A flow guide component is provided inside the tool holder, and a conveying component is provided inside the tool head. The flow guide component and the conveying component can realize the conveying and guiding of the coolant, so as to realize the spraying of the coolant at the cutting position. Moreover, the conveying of the coolant is completed inside the tool holder and the tool head, which can effectively avoid the external nozzle from affecting the cutting operation, thereby effectively improving the convenience of CNC machining; 2. The present invention arranges a liquid inlet groove and a diverter groove inside the tool holder, and the liquid inlet groove and the diverter groove can realize the delivery of the coolant. A sealing seat is arranged on the inner wall of the diverter groove, and a slidable sealing block is arranged inside the sealing seat. A counterweight block and a connecting arm are arranged at one end of the sealing block. When the tool is in use, the tool for cutting is rotated to the lower position. At this time, the counterweight block drives the sealing block to move through the connecting arm to release the sealing effect of the sealing block and the diverter groove, so that the automatic spraying of the coolant can be realized. In this process, the tool not involved in the cutting is located at the upper part, and the inside of the diverter groove connected to the upper tool is sealed to realize the automatic switching of the coolant pipeline, thereby facilitating the processing. 3. The present invention provides a drainage groove at the bottom end of the blade, and the drainage groove can guide the coolant so that the coolant flows accurately to the cutting position. A strip groove and a circular groove are provided on one side of the drainage groove, and the circular groove can guide the coolant to flow in, and guide the coolant into the drainage groove through the strip groove. Both the strip groove and the circular groove fit with the groove at the end of the cutter head to ensure the guiding effect of the coolant. In addition, the blade is installed in the groove through a positioning seat and a positioning bolt. The detachable structure of the blade facilitates the rapid replacement of the blade, and the replacement of the blade has no effect on the coolant pipeline, thereby facilitating the maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the knife holder structure of the present invention.

[0020] Figure 3 It is a schematic cross-sectional view of the tool holder structure of the present invention.

[0021] Figure 4 It is a side sectional schematic diagram of the knife holder structure of the present invention.

[0022] Figure 5 It is a schematic cross-sectional view of the diverter trough structure of the present invention.

[0023] Figure 6 It is a schematic cross-sectional view of the diverter trough structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the sealing block structure of the present invention.

[0025] Figure 8 It is a schematic diagram of the cutter head and the clamping block structure of the present invention.

[0026] Fig. 9 It is a schematic diagram of the blade structure of the present invention.

[0027] Fig.10 It is a bottom view schematic diagram of the blade structure of the present invention.

[0028] Fig.11 This is a schematic structural diagram of the tool head of the present invention.

[0029] Fig.12 This is a schematic cross-sectional view of the tool head structure of the present invention.

[0030] In the figure: 1, tool holder; 2, tool head; 3, clamping block; 4, blade; 11, mounting groove; 111, limiting hole; 112, limiting bolt; 12, mounting shaft; 13, liquid inlet groove; 131, shunt groove; 132, connecting groove; 133, sealing ring; 134, sealing seat; 135, sealing block; 1351, arc-shaped block; 1352, positioning block; 136, sliding groove; 137, extension groove; 138, counterweight block; 1381, square groove; 1382, wedge-shaped block; 1383, inclined surface; 1384, mating surface; 1385, locking bolt; 139, connecting arm; 21, groove; 22, liquid outlet pipe; 23, extension pipe; 24, liquid outlet hole; 25, connecting pipe; 26, connecting seat; 31, limiting block; 32, limiting groove; 41, pin hole; 42, positioning hole; 43, positioning seat; 44, convex block; 45, positioning bolt; 46, drain groove; 47, strip-shaped groove; 48, circular groove. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention provides a numerically controlled high-precision cutting tool for machining automotive parts as shown in Figures 1 to 12 Figure, which includes a tool holder 1, a tool head 2 and a clamping block 3 installed inside the tool holder 1, and also includes a blade 4 installed at the end of the tool head 2; The tool holder 1 is provided with a "C"-shaped structure, and mounting grooves 11 for installing the tool head 2 and the clamping block 3 are opened on both sides of the tool holder 1. An installation shaft 12 is fixedly installed in the middle of the tool holder 1, and a diversion component for transporting coolant is installed between the installation shaft 12 and the inside of the tool holder 1; The flow guide assembly includes a liquid inlet groove 13, a diverter groove 131, a connecting groove 132 and a sealing ring 133. The liquid inlet groove 13 is opened inside the knife seat 1 and the mounting shaft 12. The diverter groove 131 is opened at one end of the liquid inlet groove 13, and the diverter groove 131 is set as a "few" shape structure. The connecting groove 132 is opened at both ends of the diverter groove 131, and the two connecting grooves 132 are respectively opened on the inner walls of the two mounting grooves 11. The sealing ring 133 is fixedly installed at the notch of the connecting groove 132, and a sealing assembly is installed in the middle of the diverter groove 131. The sealing assembly is used to seal the diverter slot 131. The sealing assembly includes a sealing seat 134, a sealing block 135, a slide groove 136, an extension groove 137, a counterweight 138 and a connecting arm 139. The sealing seat 134 is set as an annular structure, and the sealing seat 134 is fixedly installed in the middle of the diverter slot 131. The sealing block 135 is plugged and installed in the middle of the sealing seat 134. The slide groove 136 is opened on the inner side wall of the diverter slot 131, and the slide groove 136 corresponds to the sealing block 135. The extension groove 137 is opened in the slide groove 13 6, the counterweight block 138 is slidably installed in the extension groove 137, and the connecting arm 139 is rotatably installed between the counterweight block 138 and the sealing block 135 through the pin shaft. The slide groove 136 is located at the top of the inner wall of the extension groove 137. Therefore, when the knife holder 1 is turned over, the position of the counterweight block 138 switches from coinciding with the slide groove 136 to being misaligned with the slide groove 136. In this process, the counterweight block 138 can drive the sealing block 135 to switch between the two positions, so as to achieve the switching between the sealing and opening of the diverter groove 131; The sealing assembly also includes a square groove 1381 and a wedge block 1382 for locking the position of the counterweight block 138. The square groove 1381 is provided on the inner wall of the extension groove 137. The wedge block 1382 is slidably installed inside the square groove 1381. An inclined surface 1383 is provided on one side of the wedge block 1382. An adapting surface 1384 corresponding to the inclined surface 1383 is provided on one end of the counterweight block 138. A locking bolt 1385 is rotatably installed on one end of the wedge block 1382, and the locking bolt 1385 is rotatably installed on the inner wall of the square groove 1381. The position of the wedge block 1382 can be adjusted by rotating the locking bolt 1385. When the wedge block 1382 slides, it can squeeze the adapting surface 1384 through the inclined surface 1383 to achieve the effect of locking the counterweight block 138, thereby achieving continuous sealing of the diverter groove 131, so as to facilitate the processing of products that do not require coolant. The sealing assembly further includes an arc block 1351 and a positioning block 1352. The arc block 1351 is fixedly mounted on one end of the sealing block 135, and the arc block 1351 corresponds to the sealing seat 134. The arc structure design of the arc block 1351 ensures that the gap of the sealing block 135 can be completely blocked after the sealing block 135 is inserted into the sealing seat 134. The positioning block 1352 is fixedly mounted on the other end of the sealing block 135, and the positioning block 1352 is slidably mounted inside the slide groove 136. The setting of the positioning block 1352 ensures the stability of the sealing block 135 during the sliding process, thereby ensuring its sealing effect. A groove 21 for mounting the blade 4 is provided at one end of the cutter head 2, and a delivery component for cooperating with the guide component to deliver the coolant is installed inside the cutter head 2; The delivery assembly includes a liquid outlet pipe 22, an extension pipe 23, a liquid outlet hole 24 and a connecting pipe 25. The liquid outlet pipe 22 is opened inside the cutter head 2, and one end of the liquid outlet pipe 22 extends to the outer wall of the cutter head 2. The extension pipe 23 is opened inside the cutter head 2. The liquid outlet hole 24 is opened at the bottom of the groove 21, and the liquid outlet hole 24 is connected to the liquid outlet pipe 22 through the extension pipe 23. The connecting pipe 25 is opened inside the cutter head 2, and one end of the connecting pipe 25 is connected to one end of the liquid outlet pipe 22. The other end of the connecting pipe 25 is fixedly installed with a connecting seat 26, and the connecting seat 26 can be connected to the connecting groove 132 to complete the delivery of the coolant from the cutter seat 1 to the cutter head 2. The clamp block 3 is used to fix the cutter head 2 inside the mounting groove 11, and a limit position assembly is installed between the clamp block 3 and the cutter head 2; The limiting assembly includes a limiting block 31 and a limiting groove 32. The limiting block 31 is fixedly mounted on the bottom end of the clamping block 3, and the limiting groove 32 is opened on one side of the cutter head 2. The limiting assembly also includes a limiting hole 111 and a limiting bolt 112. The limiting hole 111 penetrates the inner wall of the mounting groove 11. One end of the limiting bolt 112 fits with the outer wall of the clamping block 3. The limiting bolt 112 can clamp and fix the position of the clamping block 3. A fixing assembly is installed above the blade 4, and a drain groove 46 for draining the coolant is provided at the bottom end of the blade 4; The fixing assembly is used to fix the position of the blade 4, and the fixing assembly includes a pin hole 41, a positioning hole 42, a positioning seat 43 and a protrusion 44. The pin hole 41 is opened in the middle of the blade 4, the positioning hole 42 is opened at one end of the upper surface of the blade 4, the positioning seat 43 is installed on the top of the cutter head 2, and a positioning bolt 45 is installed through the middle of the positioning seat 43, and the positioning bolt 45 is threadedly installed on the top of the cutter head 2. The protrusion 44 is fixedly installed at the bottom end of the positioning seat 43, and the protrusion 44 corresponds to the positioning hole 42. The protrusion 44 cooperates with the positioning hole 42, so that the positioning seat 43 can press the blade 4 tightly; In addition, a strip groove 47 and a circular groove 48 are provided on the lower surface of the blade 4. One end of the strip groove 47 extends to the inner wall of the drainage groove 46. The circular groove 48 is arranged at the other end of the strip groove 47. The position of the circular groove 48 corresponds to the liquid outlet 24. The coolant discharged from the liquid outlet 24 can directly enter the circular groove 48, accumulate in the circular groove 48 to generate pressure, and then be discharged through the strip groove 47 and the drainage groove 46.

[0033] In summary, in the process of CNC machining of automobile parts, the blade 4 is installed in the groove 21 at the end of the cutter head 2, the cutter head 2 and the clamping block 3 are installed in the installation groove 11 outside the tool holder 1, and the tool holder 1 is installed inside the CNC machine tool through the installation shaft 12, and the liquid inlet groove 13 inside the tool holder 1 is connected to the input pipeline of the coolant; During CNC machining, the tool holder 1 rotates with the CNC machine tool, and the tool head 2 and the blade 4 used for machining rotate to the bottom of the device. At this time, the counterweight block 138 slides to the inner bottom end of the extension groove 137 under the action of gravity, and the counterweight block 138 drives the sealing block 135 to move through the connecting arm 139, so that the sealing block 135 slides inside the slide groove 136. At this time, the sealing block 135 is separated from the sealing seat 134, so that the internal channel of the diverter groove 131 is opened. At this time, the coolant enters the diverter groove 131 through the liquid inlet groove 13, and then enters the connecting pipe 25 through the connecting groove 132, and is discharged through the liquid outlet pipe 22 and the liquid outlet hole 24. The coolant discharged from the liquid outlet pipe 22 flows along the outer wall of the tool head 2 to the top of the product, and the coolant discharged from the liquid outlet hole 24 enters the drain groove 46 through the circular groove 48 and the strip groove 47, and flows to the machining position under the guidance of the drain groove 46 to ensure the stable progress of the machining process. During this process, the cutter head 2 and the blade 4 not involved in the processing rotate to the top of the device, the counterweight block 138 slides downward under the action of gravity, and pushes the sealing block 135 to move through the connecting arm 139, so that the sealing block 135 is inserted into the sealing seat 134 to achieve the sealing of the upper diverter groove 131, so as to prevent the coolant from being discharged from the outside of the cutter head 2 not involved in the processing; When the cutter head 2 or the blade 4 needs to be replaced, the limit of the clamp block 3 can be released by rotating the limit bolt 112, and the clamp block 3 and the cutter head 2 can be disassembled and replaced. The limit of the positioning seat 43 can be released by rotating the positioning bolt 45, so that the limit of the blade 4 can be released to realize the replacement of the blade 4.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision CNC tool for machining automobile parts, characterized in that: It includes a tool holder (1), a tool bit (2) and a clamping block (3) installed inside the tool holder (1), and also includes a cutting blade (4) installed at the end of the tool bit (2); The tool holder (1) is set in a "C" - shaped structure, and mounting grooves (11) for installing the tool bit (2) and the clamping block (3) are provided on both sides of the tool holder (1). A mounting shaft (12) is fixedly installed in the middle of the tool holder (1), and a diversion component for transporting coolant is installed between the mounting shaft (12) and the inside of the tool holder (1); On one side of the end of the tool bit (2), a groove (21) for installing the cutting blade (4) is provided, and a conveying component for cooperating with the diversion component to transport coolant is installed inside the tool bit (2); The clamping block (3) is used to fix the tool bit (2) inside the mounting groove (11), and a limiting component is installed between the clamping block (3) and the tool bit (2); A fixing component is installed above the cutting blade (4), and a liquid discharge groove (46) for discharging coolant is provided at the bottom end of the cutting blade (4).

2. The high-precision CNC tool for machining automobile parts according to claim 1, characterized in that: The diversion component includes a liquid inlet groove (13), a diversion groove (131), a connection groove (132) and a sealing ring (133). The liquid inlet groove (13) is provided inside the tool holder (1) and the mounting shaft (12). The diversion groove (131) is provided at one end of the liquid inlet groove (13), and the diversion groove (131) is set in a "J" - shaped structure. The connection grooves (132) are provided at both ends of the diversion groove (131), and the two connection grooves (132) are respectively provided on the inner walls of the two mounting grooves (11). The sealing ring (133) is fixedly installed at the notch of the connection groove (132), and a sealing component is installed in the middle of the diversion groove (131).

3. The high-precision CNC tool for machining automobile parts according to claim 2, characterized in that: The sealing component is used to block the diversion groove (131). The sealing component includes a sealing seat (134), a sealing block (135), a sliding groove (136), an extension groove (137), a counterweight block (138) and a connecting arm (139). The sealing seat (134) is set in an annular structure and is fixedly installed in the middle of the diversion groove (131). The sealing block (135) is inserted and installed in the middle of the sealing seat (134). The sliding groove (136) is provided on the inner side wall of the diversion groove (131) and corresponds to the sealing block (135). The extension groove (137) is provided at one end of the sliding groove (136). The counterweight block (138) is slidably installed inside the extension groove (137). The connecting arm (139) is rotatably installed between the counterweight block (138) and the sealing block (135) through a pin shaft.

4. The high-precision CNC tool for machining automobile parts according to claim 3, characterized in that: The sealing assembly further comprises a square groove (1381) and a wedge block (1382) for locking the position of the counterweight block (138); the square groove (1381) is formed on the inner wall of the extension groove (137); the wedge block (1382) is slidably mounted inside the square groove (1381); an inclined surface (1383) is provided on one side of the wedge block (1382); an adapting surface (1384) corresponding to the inclined surface (1383) is formed on one end of the counterweight block (138); a locking bolt (1385) is rotatably mounted on one end of the wedge block (1382); and the locking bolt (1385) is rotatably mounted on the inner wall of the square groove (1381).

5. The high-precision CNC tool for machining automobile parts according to claim 3, characterized in that: The sealing assembly further comprises an arc block (1351) and a positioning block (1352), wherein the arc block (1351) is fixedly mounted on one end of the sealing block (135), and the arc block (1351) corresponds to the sealing seat (134), and the positioning block (1352) is fixedly mounted on the other end of the sealing block (135), and the positioning block (1352) is slidably mounted inside the slide groove (136).

6. The high-precision CNC tool for machining automobile parts according to claim 1, characterized in that: The delivery assembly comprises a liquid outlet pipe (22), an extension pipe (23), a liquid outlet hole (24) and a connecting pipe (25); the liquid outlet pipe (22) is arranged inside the cutter head (2), and one end of the liquid outlet pipe (22) extends to the outer wall of the cutter head (2); the extension pipe (23) is arranged inside the cutter head (2); the liquid outlet hole (24) is arranged at the bottom of the groove (21), and the liquid outlet hole (24) and the liquid outlet pipe (22) are connected via the extension pipe (23); the connecting pipe (25) is arranged inside the cutter head (2), and one end of the connecting pipe (25) is connected to one end of the liquid outlet pipe (22); and the other end of the connecting pipe (25) is fixedly mounted with a connecting seat (26).

7. The high-precision CNC tool for machining automobile parts according to claim 6, characterized in that: The lower surface of the blade (4) is provided with a strip groove (47) and a circular groove (48), one end of the strip groove (47) extends to the inner wall of the liquid drainage groove (46), the circular groove (48) is arranged at the other end of the strip groove (47), and the position of the circular groove (48) corresponds to the liquid outlet hole (24).

8. The high-precision CNC tool for machining automobile parts according to claim 1, characterized in that: The fixing assembly is used to fix the position of the blade (4), and the fixing assembly comprises a pin hole (41), a positioning hole (42), a positioning seat (43) and a protrusion (44), wherein the pin hole (41) is formed in the middle of the blade (4), the positioning hole (42) is formed in one end of the upper surface of the blade (4), the positioning seat (43) is installed on the top of the cutter head (2), a positioning bolt (45) is installed through the middle of the positioning seat (43), and the positioning bolt (45) is threadedly installed on the top of the cutter head (2), and the protrusion (44) is fixedly installed on the bottom end of the positioning seat (43), and the protrusion (44) corresponds to the positioning hole (42).

9. The high-precision CNC tool for machining automobile parts according to claim 1, characterized in that: The limiting assembly comprises a limiting block (31) and a limiting groove (32), wherein the limiting block (31) is fixedly mounted on the bottom end of the clamping block (3), and the limiting groove (32) is provided on one side of the cutter head (2).

10. The high-precision CNC tool for machining automobile parts according to claim 1, characterized in that: The limiting assembly further comprises a limiting hole (111) and a limiting bolt (112); the limiting hole (111) penetrates the inner wall of the mounting groove (11); one end of the limiting bolt (112) is in contact with the outer wall of the clamping block (3).

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