A method for using an automatic cutting tool for the spray coating inside a housing

Abstract

A method of using an automatic cutting tooling for the inner spray coating of a housing. After manually sliding the cutting guide rail towards the cutting frame at the other end, a pair of cylindrical body rotating devices are correspondingly installed into a pair of annular cavities; the cutting guide rail is restored to its original position and fixed; the automatic mode of the control center is manually turned on. After positioning the axis mark of the cylindrical housing, the operator starts the guiding slider through the control center to drive the hydraulic cylinder and the positioning probe to run and enter the cylindrical housing. The control center automatically starts the lever of the hydraulic cylinder to move upward, and the cutting blade cuts into the inner coating of the cylinder to complete the cutting of the first component hole; the present invention is a spray coating cutting tooling for the positioning of coating holes; after the control center is turned on, the control center performs positioning through the axis mark of the cylindrical housing, and the component hole is cut by the positioning probe corresponding to detect the cutting positioning mark, without manual cutting and trimming of the edge of the coating hole, which can improve the accuracy of the installed component and the sealing performance of the internal components of the cylindrical housing.

Description

Technical Field

[0001] The present invention relates to a cutting tool for the spray coating inside a housing, and in particular to a method for using an automatic cutting tool for the spray coating inside a housing. Background Art

[0002] Currently, on a high-temperature and high-pressure cylindrical housing, an installation opening needs to be reserved. The installation opening is a component for installing the housing. Inside the high-temperature and high-pressure cylindrical housing is a sprayed heat-insulating layer. Since the density of the sprayed heat-insulating layer in the high-temperature and high-pressure cylindrical housing is relatively low and the supporting strength is relatively low, the sealing strength of the component installed at the installation opening is relatively poor. The inner edge of the installation opening is covered by the sprayed heat-insulating layer, and the inner edge of the installation opening covered by the sprayed heat-insulating layer needs to be cut. After cutting, the heat-insulating layer is reserved as a coating hole. Since the cutting of the coating hole is generally carried out manually, the edge of the coating hole needs to be repeatedly trimmed and cut, and there are burrs around the coating hole trimmed and cut manually; the error between the coating hole cut manually and the installation component of the housing is relatively large, affecting the sealing performance of the installation of the internal components of the cylindrical housing. In view of the above reasons, a method for using an automatic cutting tool for the spray coating inside a housing is proposed. Summary of the Invention

[0003] The purpose of the present invention is to overcome the problems that on a high-temperature and high-pressure cylindrical housing, an installation opening needs to be reserved, the density of the sprayed heat-insulating layer in the high-temperature and high-pressure cylindrical housing is relatively low, the supporting strength is relatively low, the inner edge of the installation opening covered by the sprayed heat-insulating layer needs to be cut, and after cutting, the heat-insulating layer is reserved as a coating hole. Since the cutting of the coating hole is generally carried out manually, the edge of the coating hole needs to be repeatedly trimmed and cut, and there are burrs around the coating hole trimmed and cut manually; the error between the coating hole cut manually and the installation component of the housing is relatively large, affecting the sealing performance of the installation of the internal components of the cylindrical housing. Through reasonable design, a method for using an automatic cutting tool for the spray coating inside a housing is provided. The present invention is a cutting tool for the spray coating for positioning the coating hole; after the control center is turned on, the control center is positioned through the axis mark of the cylindrical housing. After being positioned by the positioning probe corresponding to detecting the cutting positioning mark, the upward movement of the hydraulic cylinder lever cuts the component hole, reducing the error of the cut component hole and having no burrs; there is no need to manually trim and cut the edge of the coating hole, which can improve the accuracy of the installation component and the sealing performance of the installation of the internal components of the cylindrical housing.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A method for using an automatic cutting tool for the internal spray coating of a housing. The automatic cutting tool for the internal spray coating of the housing is composed of a machine base, a cylinder rotating device, a guide rail, a driving slider, a cutting frame, a cutting guide rail, a guiding slider, a hydraulic cylinder, a cutting knife, a cutting knife plate, a cutting knife positioning pin, a cutting knife edge, a cylindrical housing, an inner coating of the cylinder, a positioning sticker, a cutting positioning mark, a driving roller, a control cabinet, a control center, a positioning probe, an oil tank, a first component hole, a second component hole, a third component hole, a first transverse movement seat, a rotation limit seat, a second transverse movement seat, a lifting seat, a transverse movement lead screw, a lifting lead screw, a hydraulic pump, and a telescopic positioning key; One end of the machine base is provided with a control cabinet, an oil tank is arranged in the control cabinet, a hydraulic pump is arranged on one side above the control cabinet, a control center is arranged on one side of the hydraulic pump, and a reciprocating oil pipeline is arranged between the hydraulic pump and the oil tank;

[0005] On both sides of the upper end of the machine base, there is a pair of guide rails. Two pairs of transverse movement seats are horizontally arranged on the pair of guide rails. The two pairs of transverse movement seats are respectively set as a pair of first transverse movement seats and a pair of second transverse movement seats. Driving sliders are arranged between the first transverse movement seat and the second transverse movement seat and one side of the guide rail respectively; Transverse movement lead screws are respectively arranged on one side of the first transverse movement seat and the second transverse movement seat; A lifting seat is arranged on the second transverse movement seat, and a pair of lifting lead screws are arranged between both ends of the lifting seat and the second transverse movement seat; A pair of cylinder rotating devices are respectively arranged on the first transverse movement seat and the lifting seat. In the middle of the pair of cylinder rotating devices, a pair of rotation limit seats are respectively arranged; At both ends of the bottom of the rotation guide groove of the rotation limit seat on the first transverse movement seat, a pair of driving rollers are arranged, and a cylinder rotating device is arranged above the pair of driving rollers; At both ends of the bottom of the rotation guide groove of the rotation limit seat on the lifting seat, a pair of driven rollers are arranged, and a cylinder rotating device is arranged above the pair of driven rollers;

[0006] In the middle of the pair of cylinder rotating devices, a pair of coaxially rotating annular cavities are arranged. Telescopic positioning keys are evenly arranged on the inner sides of the pair of cylinder rotating devices respectively. A cylindrical housing is arranged in the pair of cylinder rotating devices. First component holes, second component holes, and third component holes are respectively reserved at different positions on the wall of the cylindrical housing corresponding to the shapes of the installed components. The inner side of the cylindrical housing is spray-coated to form an inner coating of the cylinder; Positioning stickers are respectively pasted on the inner edges of the inner coatings of the first component hole, the second component hole, and the third component hole. Cutting positioning marks are respectively arranged on one side of the positioning stickers. Axis marks are respectively arranged at the mouths of one end of the cylindrical housing corresponding to the centers of the cutting positioning marks; Rotation grooves are respectively reserved on the pair of rotation limit seats. Two pairs of guide pins are arranged on the upper parts of both ends of the rotation limit seats. Rotation guide grooves are respectively reserved on both sides of the pair of cylinder rotating devices, and guide pins are respectively arranged in the rotation guide grooves on both sides of the cylinder rotating device;

[0007] A pair of cutting frames are provided at both ends on the upper surface of the machine base. The pair of cutting frames are set as a pair of A frames. A cutting guide rail is provided at the upper ends of the pair of cutting frames. A guiding slider is provided above the cutting guide rail. A hydraulic cylinder is provided above the guiding slider. A pressure pipeline is provided between the hydraulic cylinder and the hydraulic pump. Above the hydraulic cylinder is a hydraulic lever. A cutting knife is provided at the upper end of the hydraulic lever. The bottom of the cutting knife is a cutting knife plate. A cutting edge is vertically provided at the upper edge of the cutting knife plate. A cutting knife positioning pin is provided on one side of the center of the lower surface of the cutting knife plate. A cutting knife positioning groove is reserved at the upper end of the hydraulic lever, and the cutting knife positioning pin is arranged in the cutting knife positioning groove. A positioning probe is provided on one side of the hydraulic cylinder. A sensing line for the probe signal is provided between the positioning probe and the control center. A slider control line is provided between the control center and the guiding slider. The positioning probe is correspondingly arranged with the center of the cutting positioning mark. A sensing line is provided between the control center and the positioning probe. The control center is provided with a reminder light and a speaker. The control center is set to an automatic mode or a manual mode;

[0008] When cutting the inner coating of the cylinder body of the first component hole, the second component hole, and the third component hole, manually slide the cutting guide rail towards one of the cutting frames. After the cutting guide rail leaves the other cutting frame, manually control the cylindrical shell to be loaded into a pair of annular cavities corresponding to a pair of cylindrical rotating devices. After manually detecting that the cylindrical shell is installed in place, it is clamped by the telescopic positioning key to complete the installation of the cylindrical shell;

[0009] After the installation of the cylindrical shell is completed, manually restore the cutting guide rail and the other cutting frame to their original positions and fix them. After the cutting guide rail is fixed in place, manually turn on the automatic mode of the control center. Rotate the cylindrical shell through the driving roller. When the cylindrical shell rotates to the axis mark of the cutting positioning mark corresponding to the first component hole of the positioning probe, the control center reminds through the light and the speaker and stops rotating, completing the positioning of the axis mark of the cylindrical shell.

[0010] After the positioning of the axis mark of the cylindrical shell, manually start the guiding slider through the control center to drive the hydraulic cylinder and the positioning probe to run and enter the cylindrical shell. When the positioning probe correspondingly detects the center of the cutting positioning mark, the guiding slider automatically stops. After the guiding slider automatically stops, the control center automatically starts the lever of the hydraulic cylinder to run upward. When the cutting edge of the cutting knife cuts into the inner coating of the cylinder body and touches the cylindrical shell and is resisted, the control center automatically stops the upward running of the lever of the hydraulic cylinder, completing the cutting of the first component hole.

[0011] After the cutting of the first component hole is completed and the lever of the hydraulic cylinder automatically stops running, the control center automatically starts the lever of the hydraulic cylinder to drive the cutting knife to run downward. After the cutting knife disengages from the inner coating of the cylinder body, the control center automatically starts the guiding slider to return to the inlet of the cylindrical shell, and manually clean the waste of the inner coating of the cylinder body on the cutting knife. Manually remove the cutting knife of the first component hole, install the cutting knife of the second component hole, and perform the cutting of the second component hole and the third component hole according to the above process.

[0012] Beneficial effects: The present invention is a spraying coating cutting tool for the positioning of coating holes; after the control center is turned on, the control center is positioned through the axis marking of the cylindrical shell. After the cutting positioning mark is detected correspondingly by the positioning probe for positioning, the upward movement of the hydraulic cylinder lever cuts the component holes, reducing the error of the cut component holes and having no burrs; there is no need for manual cutting and trimming of the edges of the coating holes, which can improve the accuracy of the installed components and the sealing performance of the internal components of the cylindrical shell. Description of the Drawings

[0013] The present invention will be further described below with reference to the accompanying drawings:

[0014] Figure 1 is the overall assembly structure diagram;

[0015] Figure 2 is Figure 1 the partial structure diagram of

[0016] Figure 3 is Figure 2 the structure diagram of the cutting tool control system of

[0017] Figure 4 is Figure 1 the partial end face structure diagram of

[0018] Figure 5 is Figure 2 the partial three-dimensional structure diagram of

[0019] Figure 6 is Figure 1 the three-dimensional structure diagram of the cylindrical shell of

[0020] Figure 7 is Figure 1 the structure diagram of the cutting tool of

[0021] Figure 8 is Figure 7 the end face structure diagram of

[0022] Figure 9 is Figure 7 the three-dimensional structure diagram of

[0023] Figure 1 and 2, among 3, 4, 5, 6, 7, 8, 9: machine base 1, cylinder body rotation device 2, guide rail 3, active slider 4, cutting frame 5, cutting guide rail 6, guiding slider 6-1, hydraulic cylinder 7, cutting knife 8, cutting knife plate 8-1, cutting knife positioning pin 8-2, cutting knife edge 8-3, cylindrical shell 9, inner coating 9-1 of the cylinder body, positioning sticker 9-2, cutting positioning mark 9-3, active roller 10, control cabinet 11, control center 11-1, positioning probe 11-2, fuel tank 11-3, first component hole 12, second component hole 12-1, third component hole 12-2, first transverse movement seat 13, rotation limit seat 13-1, second transverse movement seat 14, lifting seat 15, transverse movement lead screw 16, lifting lead screw 17, hydraulic pump 18, telescopic positioning key 19. Detailed implementation manners

[0024] The present invention will be further described in detail below in combination with embodiments and specific implementation manners:

[0025] Embodiment 1

[0026] A control cabinet 11 is arranged at one end of the machine base 1. A fuel tank 11-3 is arranged in the control cabinet 11. A hydraulic pump 18 is arranged on one side above the control cabinet 11. A control center 11-1 is arranged on one side of the hydraulic pump 18. A reciprocating oil pipeline is arranged between the hydraulic pump 18 and the fuel tank 11-3;

[0027] A pair of guide rails 3 are arranged at the upper ends on both sides of the machine base 1. Two pairs of transverse movement seats are arranged horizontally on the pair of guide rails 3. The two pairs of transverse movement seats are respectively arranged as a pair of first transverse movement seats 13 and a pair of second transverse movement seats 14. Active sliders 4 are arranged between the first transverse movement seats 13, the second transverse movement seats 14 and one side of the guide rails 3 respectively; Transverse movement lead screws 16 are respectively arranged on one side of the first transverse movement seats 13 and the second transverse movement seats 14; A lifting seat 15 is arranged on the second transverse movement seat 14. A pair of lifting lead screws 17 are arranged between both ends of the lifting seat 15 and the second transverse movement seat 14; A pair of cylinder body rotation devices 2 are respectively arranged on the first transverse movement seats 13 and the lifting seat 15. The middle parts on the pair of cylinder body rotation devices 2 are respectively arranged as a pair of rotation limit seats 13-1; A pair of active rollers 10 are arranged at both ends of the bottom of the rotation guide groove of the rotation limit seat 13-1 of the first transverse movement seat 13. A cylinder body rotation device 2 is arranged above the pair of active rollers 10; A pair of driven rollers are arranged at both ends of the bottom of the rotation guide groove of the rotation limit seat 13-1 of the lifting seat 15. A cylinder body rotation device 2 is arranged above the pair of driven rollers;

[0028] A pair of cylindrical body rotating devices 2 are provided with a pair of coaxially rotating annular cavities in the middle. On the inner sides of the pair of cylindrical body rotating devices 2, telescopic positioning keys 19 are evenly distributed respectively. A cylindrical shell 9 is arranged in the pair of cylindrical body rotating devices 2. First component holes 12, second component holes 12-1, and third component holes 12-2 are respectively reserved at different positions on the wall of the cylindrical shell 9 corresponding to the shapes of the components. The inner side of the cylindrical shell 9 is sprayed with an inner coating 9-1 of the cylindrical body; positioning stickers 9-2 are respectively pasted on the inner edges of the inner coatings 9-1 of the first component holes 12, second component holes 12-1, and third component holes 12-2. Cutting positioning marks 9-3 are respectively arranged on one side of the positioning stickers 9-2. Axis marks are respectively arranged at the mouth parts at one end of the cylindrical shell 9 corresponding to the centers of the cutting positioning marks 9-3; Rotation slots are respectively reserved on a pair of rotation limit seats 13-1. Two pairs of guide pins are arranged at the upper parts of both ends of the rotation limit seats 13-1. Rotation guide slots are respectively arranged on both sides of the pair of cylindrical body rotating devices 2. Guide pins are respectively arranged in the rotation guide slots on both sides of the cylindrical body rotating devices 2;

[0029] On both ends of the machine base 1, a pair of cutting frames 5 are arranged. The pair of cutting frames 5 are arranged as a pair of A-frames. A cutting guide rail 6 is arranged at the upper ends of the pair of cutting frames 5. A guide slider 6-1 is arranged above the cutting guide rail 6. A hydraulic cylinder 7 is arranged above the guide slider 6-1. A pressure pipeline is arranged between the hydraulic cylinder 7 and the hydraulic pump 18; The upper part of the hydraulic cylinder 7 is a hydraulic lever. A cutting knife 8 is arranged at the upper end of the hydraulic lever. The bottom of the cutting knife 8 is a cutting knife plate 8-1. Cutting knife edges 8-3 are vertically arranged on the edge of the upper surface of the cutting knife plate 8-1. A cutting knife positioning pin 8-2 is arranged on one side of the center of the lower surface of the cutting knife plate 8-1; A cutting knife positioning groove 7-1 is reserved at the upper end of the hydraulic lever. The cutting knife positioning pin 8-2 is arranged in the cutting knife positioning groove 7-1; A positioning probe 11-2 is arranged on one side of the hydraulic cylinder 7. A sensing line for the probe signal is arranged between the positioning probe 11-2 and the control center 11-1. A slider control line is arranged between the control center 11-1 and the guide slider 6-1. The positioning probe 11-2 is correspondingly arranged with the center of the cutting positioning mark 9-3. A sensing line is arranged between the control center 11-1 and the positioning probe 11-2. A reminder light and a horn are arranged on the control center 11-1. The control center 11-1 is set to an automatic mode or a manual mode;

[0030] When cutting the inner coatings 9-1 of the first component holes 12, second component holes 12-1, and third component holes 12-2, the cutting guide rail 6 is manually slid to one of the cutting frames 5. After the cutting guide rail 6 leaves the other cutting frame 5, the cylindrical shell 9 is manually controlled to be inserted into a pair of annular cavities corresponding to the pair of cylindrical body rotating devices 2. After manually detecting that the cylindrical shell 9 is installed in place, it is clamped by the telescopic positioning keys 19 to complete the installation of the cylindrical shell 9;

[0031] After the cylindrical housing 9 is installed, manually restore the cutting guide rail 6 and the cutting frame 5 at the other end to their original positions and fix them; after the cutting guide rail 6 is fixed in place, manually turn on the automatic mode of the control center 11-1, and rotate the cylindrical housing 9 through the driving roller 10. When the cylindrical housing 9 rotates to the axis mark of the cutting positioning mark 9-3 corresponding to the first component hole 12 of the positioning probe 11-2, the control center 11-1 reminds through lights and a horn and stops the rotation, completing the positioning of the axis mark of the cylindrical housing 9.

[0032] Embodiment 2

[0033] After the positioning of the axis mark of the cylindrical housing 9, manually start the guiding slider 6-1 through the control center 11-1 to drive the hydraulic cylinder 7 and the positioning probe 11-2 to operate and enter the cylindrical housing 9. When the positioning probe 11-2 detects the center of the cutting positioning mark 9-3, the guiding slider 6-1 automatically stops. After the guiding slider 6-1 automatically stops, the control center 11-1 automatically starts the lever of the hydraulic cylinder 7 to move upward. When the cutting edge 8-3 of the cutting knife 8 cuts into the inner coating 9-1 of the cylinder and the cylindrical housing 9 is subjected to resistance, the control center 11-1 automatically stops the upward movement of the lever of the hydraulic cylinder 7, completing the cutting of the first component hole 12.

[0034] Embodiment 3

[0035] After the cutting of the first component hole 12 is completed and the lever of the hydraulic cylinder 7 automatically stops running, the control center 11-1 automatically starts the lever of the hydraulic cylinder 7 to drive the cutting knife 8 to move downward; after the cutting knife 8 disengages from the inner coating 9-1 of the cylinder, the control center 11-1 automatically starts the guiding slider 6-1 to return to the inlet of the cylindrical housing 9, and manually clean the waste of the inner coating 9-1 of the cutting knife 8; manually remove the cutting knife 8 of the first component hole 12, install the cutting knife 8 of the second component hole 12-1, and perform the cutting of the second component hole 12-1 and the third component hole 12-2 according to the above procedures.

Claims

1. A method of using an automatic cutting tool for the internal spray coating of a housing. The automatic cutting tool for the internal spray coating of the housing is composed of a machine base (1), a cylinder rotating device (2), a guide rail (3), a driving slider (4), a cutting frame (5), a cutting guide rail (6), a guiding slider (6-1), a hydraulic cylinder (7), a cutting knife (8), a cutting knife plate (8-1), a cutting knife positioning pin (8-2), a cutting knife edge (8-3), a cylindrical housing (9), an inner coating of the cylinder (9-1), a positioning sticker (9-2), a cutting positioning mark (9-3), a driving roller (10), a control (11), a control center (11-1), a positioning probe (11-2), an oil tank (11-3), a first component hole (12), a second component hole (12-1), a third component hole (12-2), a first transverse movement seat (13), a rotation limit seat (13-1), a second transverse movement seat (14), a lifting seat (15), a transverse movement lead screw (16), a lifting lead screw (17), a hydraulic pump (18), and a telescopic positioning key (19); characterized in that: One end of the machine base (1) is provided with a control unit (11). An oil tank (11-3) is arranged in the control unit (11). A hydraulic pump (18) is arranged on one side above the control unit (11). A control center (11-1) is arranged on one side of the hydraulic pump (18). An oil pipeline for reciprocating is arranged between the hydraulic pump (18) and the oil tank (11-3). On both upper ends of both sides of the machine base (1), there is a pair of guide rails (3). Two pairs of transverse moving seats are arranged horizontally on the pair of guide rails (3). The two pairs of transverse moving seats are respectively set as a pair of first transverse moving seats (13) and a pair of second transverse moving seats (14). Active sliders (4) are arranged between the first transverse moving seats (13), the second transverse moving seats (14) and the guide rails (3) on one side respectively. Transverse moving lead screws (16) are respectively arranged on one side of the first transverse moving seats (13) and the second transverse moving seats (14). A lifting seat (15) is arranged on the second transverse moving seat (14). A pair of lifting lead screws (17) are arranged between both ends of the lifting seat (15) and the second transverse moving seat (14). A pair of cylinder rotating devices (2) are respectively arranged on the first transverse moving seats (13) and the lifting seat (15). In the middle of the pair of cylinder rotating devices (2), there are respectively set as a pair of rotation limiting seats (13-1). At both ends of the bottom of the rotation guide groove of the rotation limiting seat (13-1) of the first transverse moving seat (13), there are a pair of active rollers (10). Above the pair of active rollers (10), there is a cylinder rotating device (2). At both ends of the bottom of the rotation guide groove of the rotation limiting seat (13-1) of the lifting seat (15), there are a pair of driven rollers. Above the pair of driven rollers, there is a cylinder rotating device (2). In the middle of the pair of cylinder rotating devices (2), there are respectively set as a pair of coaxially rotating annular cavities. Telescopic positioning keys (19) are evenly arranged on the inner sides of the pair of cylinder rotating devices (2). A cylindrical shell (9) is arranged in the pair of cylinder rotating devices (2). First part holes (12), second part holes (12-1), and third part holes (12-2) are respectively reserved at different parts on the wall of the cylindrical shell (9) corresponding to the shapes of the installation parts. The inner side of the cylindrical shell (9) is sprayed with a cylinder inner coating (9-1). Positioning stickers (9-2) are respectively pasted on the inner edges of the cylinder inner coating (9-1) of the first part holes (12), the second part holes (12-1), and the third part holes (12-2). Cutting positioning marks (9-3) are respectively arranged on one side of the positioning stickers (9-2). Axis marks are respectively arranged at the mouths of one end of the cylindrical shell (9) corresponding to the centers of the cutting positioning marks (9-3). Rotation grooves are respectively reserved on the pair of rotation limiting seats (13-1). There are two pairs of guide pins arranged at the upper parts of both ends of the rotation limiting seats (13-1). Reserved rotation guide grooves are respectively arranged on both sides of the pair of cylinder rotating devices (2). Guide pins are respectively arranged in the rotation guide grooves on both sides of the cylinder rotating devices (2). At both ends on the upper surface of the machine base (1), a pair of cutting frames (5) are arranged. The pair of cutting frames (5) are arranged as a pair of A frames. At the upper ends of the pair of cutting frames (5), a cutting guide rail (6) is arranged. Above the cutting guide rail (6), a guiding slider (6-1) is arranged. Above the guiding slider (6-1), a hydraulic cylinder (7) is arranged. A pressure pipeline is arranged between the hydraulic cylinder (7) and the hydraulic pump (18). Above the hydraulic cylinder (7) is a hydraulic lever. At the upper end of the hydraulic lever, a cutting knife (8) is arranged. At the bottom of the cutting knife (8) is a cutting knife plate (8-1). On the upper edge of the cutting knife plate (8-1), a cutting knife edge (8-3) is vertically arranged. On one side of the center of the lower surface of the cutting knife plate (8-1) is a cutting knife positioning pin (8-2). A cutting knife positioning groove (7-1) is reserved at the upper end of the hydraulic lever. The cutting knife positioning pin (8-2) is arranged in the cutting knife positioning groove (7-1). On one side of the hydraulic cylinder (7), a positioning probe (11-2) is arranged. A sensing line for the probe signal is arranged between the positioning probe (11-2) and the control center (11-1). A slider control line is arranged between the control center (11-1) and the guiding slider (6-1). The positioning probe (11-2) is arranged corresponding to the center of the cutting positioning mark (9-3). A sensing line is arranged between the control center (11-1) and the positioning probe (11-2). On the control center (11-1), a reminder light and a horn are provided. The control center (11-1) is set to an automatic mode or a manual mode; When cutting the inner coating (9-1) of the cylinder body on the inner sides of the first component hole (12), the second component hole (12-1), and the third component hole (12-2), the cutting guide rail (6) is manually slid towards one cutting frame (5). After the cutting guide rail (6) leaves the other cutting frame (5), the cylindrical shell (9) is manually controlled to be inserted into a pair of annular cavities corresponding to a pair of cylinder body rotating devices (2). After manually detecting that the cylindrical shell (9) is installed in place, it is clamped by the telescopic positioning key (19) to complete the installation of the cylindrical shell (9); After the installation of the cylindrical shell (9) is completed, the cutting guide rail (6) is manually restored to its original position and fixed to the other cutting frame (5). After the cutting guide rail (6) is fixed in place, the automatic mode of the control center (11-1) is manually turned on. The cylindrical shell (9) is rotated by the driving roller (10). When the cylindrical shell (9) rotates to the axis mark of the cutting positioning mark (9-3) corresponding to the first component hole (12) of the positioning probe (11-2), the control center (11-1) gives a reminder through the light and the horn and the rotation stops, completing the positioning of the axis mark of the cylindrical shell (9).

2. The usage method of an automatic cutting tooling for the internal spray coating of a housing according to claim 1, characterized in that: After the positioning of the axis mark of the cylindrical shell (9), the operator starts the guiding slider (6-1) through the control center (11-1) to drive the hydraulic cylinder (7) and the positioning probe (11-2) to operate and enter the cylindrical shell (9). When the positioning probe (11-2) detects the center of the cutting positioning mark (9-3) correspondingly, the guiding slider (6-1) automatically stops. After the guiding slider (6-1) stops automatically, the control center (11-1) automatically starts the lever of the hydraulic cylinder (7) to move upward. When the cutting edge (8-3) of the cutting knife (8) cuts into the inner coating (9-1) of the cylinder and contacts the cylindrical shell (9) and encounters resistance, the control center (11-1) automatically stops the upward movement of the lever of the hydraulic cylinder (7), and the cutting of the first component hole (12) is completed.

3. The usage method of an automatic cutting tool for the internal spray coating of a housing according to claim 1, characterized in that: After the cutting of the first component hole (12) is completed and the lever of the hydraulic cylinder (7) stops operating automatically, the control center (11-1) automatically starts the lever of the hydraulic cylinder (7) to drive the cutting knife (8) to move downward; after the cutting knife (8) disengages from the inner coating (9-1) of the cylinder, the control center (11-1) automatically starts the guiding slider (6-1) to return to the inlet of the cylindrical shell (9), and the waste material of the inner coating (9-1) of the cutting knife (8) is manually cleaned; the cutting knife (8) of the first component hole (12) is manually taken out, the cutting knife (8) of the second component hole (12-1) is installed, and the cutting of the second component hole (12-1) and the third component hole (12-2) is carried out according to the above process.

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