Special-shaped box SR ball section machining cutter mechanism

Abstract

The invention provides a special-shaped box SR ball section machining cutter mechanism, and relates to the technical field of ball section machining, the special-shaped box SR ball section machining cutter mechanism comprises a base and a control box, the bottom end of the control box is rotatably provided with a machining assembly, the machining assembly comprises a connecting clamping base, an adjusting plate, a mounting frame and a cutter body, and the inner side of the connecting clamping base is rotatably provided with two rotating shafts; positioning grooves are formed in the two side ends of the adjusting plate, the arc-shaped clamping plate is pulled to slide in the guide plate, meanwhile, one end of the arc-shaped clamping plate slides at the side end of the inclined plate, the inclined plate is of an inclined plane design, the arc-shaped clamping plate slides towards the side end of the first supporting plate, and the arc-shaped clamping plate can slide towards the side end of the first supporting plate under the reverse acting force of a spring rod; the spring rod pushes the push plate to move in the fixing box, the spring rod exerts pushing force on the push plate to move, the side end of the ball valve body is pushed through the push plate, the ball valve body is made to automatically leave the top end of the discharging opening for discharging, meanwhile, the two arc-shaped clamping plates synchronously slide, and the ball valve body can be automatically aligned.

Description

Technical Field

[0001] The invention belongs to the technical field of ball cross section processing, and more specifically, particularly relates to a tool mechanism for processing a special-shaped box SR ball cross section. Background Art

[0002] In the machining center, CNC turning tools are used to complete the mass production of parts such as special-shaped boxes with small hole diameters, spherical sections, cone sections, and arc sections at the bottom of the hole with diameters larger than the hole diameter. Turning tools are used in the product manufacturing and processing application field of machining centers. Normal spherical sections at the bottom of the hole are generally processed by CNC lathes. However, due to the influence of the product structure, special-shaped boxes will generate large centrifugal forces when clamped on the CNC lathe. Special tooling fixtures are required to ensure product positioning. Since the secondary clamping of the product will affect the product position, errors will occur in the axial alignment of the inner and outer spherical surfaces during assembly.

[0003] 1. During use, the diameter of the hole of the special-shaped box is small, and the diameter of the spherical section, conical section, and arc section at the bottom of the hole is larger than the diameter of the hole. When the ball milling cutter or end milling cutter is used for processing, the interior of the spherical section is a curved design, which makes it difficult to process the entire section. Multiple tools are required for processing, resulting in long processing time and slow production progress.

[0004] 2. The material is fixed on the table by a clamp. However, during the cutting process, the staff is required to align the material with the tool first, and then limit and fix it. At the same time, after the processing is completed, the staff is required to disassemble the clamp and then take the material. The operation steps are relatively cumbersome, which affects the processing progress.

[0005] 3. During the cutting or engraving process, in order to reduce the friction temperature between the tool and the processed material, it is necessary to spray coolant onto the tool and the surface of the material it removes. After long-term use, the nozzle part will be clogged due to the continuous accumulation of impurities such as metal chips and abrasive particles generated during the cutting process, which will affect the flow of the coolant and make it impossible to maintain a stable spray, which will easily cause the tool to overheat and reduce processing efficiency and accuracy. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a tool mechanism for machining a special-shaped box SR spherical cross section to solve the above problems.

[0007] A tool mechanism for machining a special-shaped box SR spherical section, comprising a base and a control box, a machining component rotatably mounted on the bottom end of the control box, the machining component comprising a connecting base, an adjusting plate, a mounting frame, and a tool body, two rotating shafts rotatably mounted on the inner side of the connecting base, positioning grooves are provided on both side ends of the adjusting plate, gear rings are fixedly mounted on both side ends of the adjusting plate, a third telescopic rod is fixedly mounted on the bottom end of the connecting base, a positioning block is fixedly mounted on the bottom end of the third telescopic rod, a ball valve body is provided on the top end of the base, two guide plates are fixedly mounted on the top end of the base, an arc-shaped clamping plate is slidably mounted inside each of the guide plates, and a hydraulic rod is fixedly mounted on the top end of the control box.

[0008] Preferably, the two side ends of the base are fixedly installed with a first support plate, the top of each of the first support plates are fixedly installed with two first telescopic rods, the top of the two first telescopic rods are fixedly installed with a second support plate, the bottom end of each of the second support plates is fixedly installed with a fixing rod, the bottom end of each of the fixing rods is fixedly installed with a guide slider, the side end of each guide slider is rotatably installed with a pull rod, the top of the base is provided with a unloading port, the top of the base is fixedly installed with a fixing box, and the inside of the fixing box is slidably installed with a push plate.

[0009] Preferably, the two side ends of the push plate are fixedly installed with inclined plates, the side ends of the push plate are fixedly installed with two spring rods, the side ends of the connecting bracket are fixedly installed with a connecting pipe, the end of the connecting pipe is fixedly installed with a sealing cover, the side end of the mounting frame is fixedly installed with a first connecting seat, a filter plate is provided inside the first connecting seat, a second connecting seat is slidably installed on the side end of the mounting frame, a spray head is fixedly installed on the bottom end of the second connecting seat, a conical cylinder is fixedly installed on the top end of the spray head, a telescopic tube is fixedly installed on the bottom end of the first connecting seat, two second telescopic rods are fixedly installed on the bottom end of the first connecting seat, and a closing plate is fixedly installed inside the telescopic tube.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In the present invention, the inside of the ball valve body is completely processed by the tool body. During processing, the size of the tool body must be smaller than the opening at the top of the ball valve body, so as to avoid interference with the hole diameter being smaller than the ball section diameter. A CNC turning tool is used to complete the processing of the special-shaped box with a small hole diameter, and the ball section, cone section, and arc section diameters at the bottom of the hole are larger than the hole diameter, which is convenient for flexible use.

[0012] In the present invention, the arc clamping plate is pulled to slide inside the guide plate to release the fixation of the arc clamping plate to the ball valve body, and at the same time, one end of the arc clamping plate slides on the side end portion of the inclined plate. Since the inclined plate is designed as an inclined surface, the arc clamping plate slides toward the side end portion of the first support plate, and there is no squeezing of the inclined plate by the arc clamping plate. Under the reverse force of the spring rod, the spring rod pushes the push plate to move inside the fixed box. The thrust applied by the spring rod to the push plate pushes the side end portion of the ball valve body through the push plate, so that the ball valve body automatically leaves the top end of the discharge port for unloading. At the same time, the two arc clamping plates slide synchronously, and the ball valve body can be aligned by itself.

[0013] In the present invention, the second connecting seat moves downward, and the distance between the conical cylinder and the closing plate is expanded. At this time, the flow rate inside the nozzle increases. Conversely, the second connecting seat drives the nozzle to move upward, and the conical cylinder installed inside the nozzle fits with the end of the closing plate to reduce the distance. The flow rate of cooling water inside the nozzle is reduced, and the flow rate of cooling water can be adjusted.

[0014] In the present invention, the rotating shaft is rotated by connecting the connecting shaft inside the socket, and the rotating shaft is engaged with the positioning groove, driving the adjustment plate to rotate inside the connecting socket, adjusting the deflection angle of the tool body, and driving the connecting socket to rotate at the bottom end of the control box by a motor. The connecting socket rotates as a whole at the bottom end of the control box, allowing the top end of the tool body to process the inner wall of the ball valve body. Only one tool is used for processing, reducing the investment in CNC lathe equipment and the design and production costs of special tooling fixtures.

[0015] In the present invention, the guide plate is driven to extend and retract downward, so that the fixed box is driven to move downward. At the same time, the end of the fixed box squeezes the groove on the surface of the hydraulic rod, and they are mutually engaged to limit the rotation of the first telescopic rod, fix the rotation angle of the first telescopic rod, and ensure the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the base structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the arc-shaped splint of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the connecting seat of the present invention;

[0019] Figure 4 It is a schematic diagram of the push plate structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the tool body of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the adjustment plate of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the connecting card seat of the present invention;

[0023] Figure 8 It is a schematic diagram of the positioning block structure of the present invention.

[0024] In the figure, the corresponding relationship between the component names and the figure numbers is: 1, base; 11, first support plate; 12, first telescopic rod; 13, fixed rod; 14, second support plate; 15, connecting card seat; 16, control box; 17, hydraulic rod; 18, ball valve body; 19, guide plate; 21, fixed box; 22, inclined plate; 23, arc clamping plate; 24, connecting pipe; 25, sealing cover; 26, filter plate; 27, first connecting seat; 28, telescopic tube; 29, second connecting seat; 31, nozzle; 32, closing plate; 33, conical cylinder; 34, second telescopic rod; 35, adjustment plate; 36, installation frame; 37, guide slider; 38, pull rod; 39, discharge port; 41, spring rod; 42, push plate; 43, tool body; 44, positioning groove; 45, rotating shaft; 46, gear ring; 47, positioning block; 48, third telescopic rod. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] See also Figure 1 - Figure 8 The present invention provides a tool mechanism for machining a special-shaped box SR ball section, comprising a base 1 and a control box 16. A machining component is rotatably mounted on the bottom end of the control box 16. The machining component comprises a connecting card seat 15, an adjusting plate 35, a mounting frame 36, and a tool body 43. Two rotating shafts 45 are rotatably mounted on the inner side of the connecting card seat 15. Positioning grooves 44 are provided on both side ends of the adjusting plate 35. Gear rings 46 are fixedly mounted on both side ends of the adjusting plate 35. A third telescopic rod 48 is fixedly mounted on the bottom end of the connecting card seat 15. The rotating shaft 45 is rotated by connecting the connecting shaft inside the connecting card seat 15. At the same time, the rotating shaft 45 and the positioning groove 44 are fixedly mounted on the bottom end of the connecting card seat 15. The groove 44 fits together, driving the adjustment plate 35 to rotate inside the connecting base 15, adjusting the deflection angle of the tool body 43, and driving the connecting base 15 to rotate at the bottom end of the control box 16 through the motor. The connecting base 15 rotates as a whole at the bottom end of the control box 16, allowing the top end of the tool body 43 to process the inner wall of the ball valve body 18, and a positioning block 47 is fixedly installed at the bottom end of the third telescopic rod 48, and a ball valve body 18 is provided at the top end of the base 1. Two guide plates 19 are fixedly installed at the top end of the base 1, and an arc-shaped clamping plate 23 is slidably installed inside each guide plate 19. A hydraulic rod 17 is fixedly installed at the top end of the control box 16.

[0027] The two side ends of the base 1 are fixedly installed with first support plates 11, the top of each first support plate 11 is fixedly installed with two first telescopic rods 12, the tops of the two first telescopic rods 12 are fixedly installed with second support plates 14, the bottom of each second support plate 14 is fixedly installed with a fixed rod 13, the bottom of each fixed rod 13 is fixedly installed with a guide slider 37, and the side ends of each guide slider 37 are rotatably installed with a pull rod 38. The top of the base 1 is provided with a discharge port 39, and the base 1 A fixed box 21 is fixedly installed at the top, and a push plate 42 is slidably installed inside the fixed box 21. The arc-shaped clamping plate 23 slides toward the side end of the first support plate 11. There is no squeezing of the inclined plate 22 by the arc-shaped clamping plate 23. Under the reverse force of the spring rod 41, the spring rod 41 pushes the push plate 42 to move inside the fixed box 21. The thrust applied by the spring rod 41 to the push plate 42 pushes the side end of the ball valve body 18 through the push plate 42, so that the ball valve body 18 automatically leaves the top of the discharge port 39 for unloading.

[0028] The two side ends of the push plate 42 are fixedly installed with inclined plates 22, and the side ends of the push plate 42 are fixedly installed with two spring rods 41. The side end of the connecting seat 15 is fixedly installed with a connecting pipe 24, and the end of the connecting pipe 24 is fixedly installed with a sealing cover 25. The side end of the mounting frame 36 is fixedly installed with a first connecting seat 27, and a filter plate 26 is arranged inside the first connecting seat 27. The side end of the mounting frame 36 is slidably installed with a second connecting seat 29, and the bottom end of the second connecting seat 29 is fixedly installed with a nozzle 31, and the top end of the nozzle 31 is fixedly installed with a conical cylinder 33, and the bottom end of the first connecting seat 27 is fixedly installed with a telescopic tube 28. Two second telescopic rods 34 are fixedly installed at the bottom end of the first connecting seat 27, and a closing plate 32 is fixedly installed inside the telescopic tube 28. The second telescopic rods 34 are used to extend and retract downward. The end of the second telescopic rod 34 is connected to the second connecting seat 29, which pushes the second connecting seat 29 to slide on the side end of the mounting frame 36. At the same time, the second connecting seat 29 drives the nozzle 31 to move downward, and the second connecting seat 29 drives the conical tube 33 to move downward. The conical tube 33 itself is conical in design. By moving the second connecting seat 29 downward, the distance between the conical tube 33 and the closing plate 32 is enlarged, and the flow inside the nozzle 31 increases.

[0029] Working principle:

[0030] The first step, when in use, by driving the first telescopic rod 12, the first telescopic rod 12 is extended and retracted upward, the second support plate 14 slides upward on the top end of the first support plate 11, and the second support plate 14 drives the fixed rod 13 to move upward, so that the guide slider 37 slides upward on the side end of the first support plate 11, and the guide slider 37 pulls one end of the pull rod 38, so that the pull rod 38 moves and deflects toward the side end of the first support plate 11, and the pull rod 38 applies a pulling force to the arc clamping plate 23, so that the arc clamping plate 23 slides inside the guide plate 19, and the distance between the two arc clamping plates 23 is expanded, and the ball valve body 18 is moved to align the ball valve body 18 with the discharge port 39, and the first telescopic rod 12 is driven in the reverse direction to extend and retract, and the first telescopic rod 12 is compressed downward, so that the second support plate 14 slides downward on the top end of the first support plate 11, and the second support plate 14 drives the control The box 16 moves downward, and while the second support plate 14 moves downward, the second support plate 14 applies downward extrusion to the fixed rod 13, allowing the fixed rod 13 to push the guide slider 37 to slide downward on the side end of the first support plate 11, and at the same time, the pull rod 38 deflects and tilts downward, and the pull rod 38 applies a thrust to the arc clamping plate 23, allowing the two arc clamping plates 23 to slide synchronously, and the side end of the ball valve body 18 is squeezed and fixed. At the same time, due to the synchronous movement of the two arc clamping plates 23, the two arc clamping plates 23 can push the ball valve body 18 to automatically align with the tool body 43, and at the same time, the side end of the arc clamping plate 23 slides and rubs along the side end of the inclined plate 22. Since the inclined plate 22 is designed to be inclined, the sliding of the arc clamping plate 23 applies a thrust to the push plate 42, allowing the push plate 42 to move toward the inside of the fixed box 21, and the side end of the push plate 42 simultaneously squeezes the spring rod 41 to contract.

[0031] By moving the tool body 43, the end of the tool body 43 is inserted into the interior of the mounting frame 36. A plurality of screws are installed on the outside of the mounting frame 36 to rotate and fix the tool body 43. The hydraulic rod 17 is driven to extend and retract, and the hydraulic rod 17 pushes the control box 16 to rise and fall. A driving motor is installed inside the control box 16, which is connected to the connecting card seat 15 through a transmission shaft. The rotating shaft 45 is rotated through the connecting shaft inside the connecting card seat 15. At the same time, the rotating shaft 45 is matched with the positioning groove 44, driving the adjustment plate 35 to rotate inside the connecting card seat 15, and adjusting the deflection angle of the tool body 43. The connecting card seat 15 is driven by the motor to rotate at the bottom end of the control box 16. The connecting card seat 15 The whole rotates at the bottom end of the control box 16, so that the top of the tool body 43 processes the inner wall of the ball valve body 18. During the rotation of the adjustment plate 35, the gear ring 46 is driven to rotate, and the guide plate 19 is driven to extend and retract downward, so that the fixed box 21 is driven to move downward. At the same time, the end of the fixed box 21 squeezes the groove on the surface of the hydraulic rod 17, and they are mutually engaged to limit the rotation of the first telescopic rod 12, and the rotation angle of the first telescopic rod 12 is fixed to ensure the stability of use. At the same time, a discharge port 39 is opened at the top of the base 1, and the tool body 43 processes the inside of the ball valve body 18. The cut waste is directly discharged through the discharge port 39 to prevent the waste from accumulating inside the ball valve body 18.

[0032] In the second step, the coaxiality and runout technical requirements of the M82X2 external thread and M65X2 internal thread of the special-shaped box and the SR86+0.1 spherical section relative to the C reference Φ62+0.03 are all 0.02mm. The central space size of the SR86+0.1 spherical section can only be indirectly guaranteed. The roughness requirement of the spherical section is Ra1.6. The product is clamped in the vertical machining center once. After the fine boring and internal and external thread processing of three sets of hole systems are completed, the BT40-XP25 tool holder is used to clamp the S255-MVANR16 CNC turning tool and the macro program is used. The SR86 ball section is processed in two steps: rough and fine processing. Since the tool body 43 itself can not only adjust the position, but also adjust the deflection angle of the tool body 43 inside the ball valve body 18, the tool body 43 can perform complete cross-section processing on the inside of the ball valve body 18. During processing, the size of the tool body 43 must be smaller than the opening at the top of the ball valve body 18, which can avoid interference with the hole diameter being smaller than the ball section diameter. CNC turning tools are used to complete the processing of special-shaped box bodies with small hole diameters, and the ball section, cone section, and arc section diameters at the bottom of the hole are larger than the hole diameter, which is convenient for flexible use.

[0033] When the tool body 43 is used to process the inside of the ball valve body 18, a connecting pipe 24 is installed at the side end of the connecting seat 15. The connecting pipe 24 transports cooling water to the inside of the first connecting seat 27. The first connecting seat 27 is connected to the nozzle 31 through the telescopic tube 28. The cooling water splashes downward through the nozzle 31. Since the installation position of the nozzle 31 is arranged with the tool body 43, the top of the tool body 43 is continuously flushed by the nozzle 31 while the tool body 43 is cutting, so as to reduce the temperature of the tool body 43. The nozzle 31 is installed at the side end of the mounting frame 36, and is telescoped downward by the second telescopic rod 34. The end of the second telescopic rod 34 is connected to the second connecting seat 29, so as to push the second connecting seat 29 to slide on the side end of the mounting frame 36. At the same time, the second connecting seat 29 drives the nozzle 31 Move downward, the second connecting seat 29 drives the conical cylinder 33 to move downward. The conical cylinder 33 itself is a conical design. Through the downward movement of the second connecting seat 29, the distance between the conical cylinder 33 and the closing plate 32 is enlarged. At this time, the flow inside the nozzle 31 increases. Conversely, the second connecting seat 29 drives the nozzle 31 to move upward, and the conical cylinder 33 installed inside the nozzle 31 fits with the end of the closing plate 32 to reduce the distance. The flow of cooling water inside the nozzle 31 is reduced, and the flow of cooling water can be adjusted. At the same time, by rotating the sealing cover 25, the end of the sealing cover 25 is connected to the first connecting seat 27 through a threaded rotation. Rotate the sealing cover 25 clockwise to allow the sealing cover 25 to rotate on the top of the first connecting seat 27. Push the sealing cover 25 away from the top of the first connecting seat 27 through the thread to replace the filter plate 26.

[0034] The second support plate 14 is driven to move upward by the first telescopic rod 12, and the second support plate 14 drives the fixing rod 13 to move upward, and the fixing rod 13 drives the pull rod 38 to slide upward, and applies a pulling force to the pull rod 38, so that the pull rod 38 deflects at the side end of the first support plate 11, and the pull rod 38 applies a force to the arc clamping plate 23, pulling the arc clamping plate 23 to slide inside the guide plate 19, releasing the fixation of the arc clamping plate 23 to the ball valve body 18, and at the same time, one end of the arc clamping plate 23 is inclined. The side end of the plate 22 slides. Since the inclined plate 22 is designed with an inclined surface, the arc-shaped clamping plate 23 slides toward the side end of the first support plate 11. There is no squeezing of the arc-shaped clamping plate 23 on the inclined plate 22. Under the reverse force of the spring rod 41, the spring rod 41 pushes the push plate 42 to move inside the fixed box 21. The thrust applied by the spring rod 41 to the push plate 42 pushes the side end of the ball valve body 18 through the push plate 42, so that the ball valve body 18 automatically leaves the top of the discharge port 39 for unloading.

[0035] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A tool mechanism for machining a special-shaped box SR spherical cross section, comprising a base (1) and a control box (16), characterized in that: A processing assembly is rotatably mounted on the bottom end of the control box (16), and the processing assembly comprises a connecting base (15), an adjusting plate (35), a mounting frame (36), and a tool body (43). Two rotating shafts (45) are rotatably mounted on the inner side of the connecting base (15). Positioning grooves (44) are provided on both side ends of the adjusting plate (35). Gear rings (46) are fixedly mounted on both side ends of the adjusting plate (35). A third telescopic rod (48) is fixedly mounted on the bottom end of the connecting base (15), and a positioning block (47) is fixedly mounted on the bottom end of the third telescopic rod (48). A ball valve body (18) is provided on the top end of the base (1). Two guide plates (19) are fixedly mounted on the top end of the base (1), and an arc-shaped clamping plate (23) is slidably mounted inside each of the guide plates (19). A hydraulic rod (17) is fixedly mounted on the top end of the control box (16); The two arc-shaped clamping plates (23) are installed symmetrically to each other, and a motor is installed inside the control box (16). The control box (16) is connected to the connecting base (15) via a rotating shaft.

2. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 1, characterized in that: The two side ends of the base (1) are fixedly mounted with first support plates (11), the top end of each of the first support plates (11) is fixedly mounted with two first telescopic rods (12), and the top ends of the two first telescopic rods (12) are fixedly mounted with second support plates (14).

3. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 2, characterized in that: A fixing rod (13) is fixedly mounted on the bottom end of each second support plate (14), and a guide sliding block (37) is fixedly mounted on the bottom end of each fixing rod (13).

4. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 3, characterized in that: A pull rod (38) is rotatably mounted on the side end of each guide slider (37), and a discharge port (39) is provided at the top of the base (1); The end of the pull rod (38) is rotatably connected to the side end of the arc-shaped clamping plate (23).

5. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 1, characterized in that: A fixing box (21) is fixedly mounted on the top of the base (1), and a push plate (42) is slidably mounted inside the fixing box (21).

6. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 5, characterized in that: Both side ends of the push plate (42) are fixedly mounted with inclined plates (22), and both side ends of the push plate (42) are fixedly mounted with two spring rods (41); The side end of the push plate (42) is designed to be a concave arc, and the outer side of the inclined plate (22) is designed to be a slope.

7. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 1, characterized in that: A connecting pipe (24) is fixedly mounted on the side end of the connecting socket (15), and a sealing cover (25) is fixedly mounted on the end of the connecting pipe (24).

8. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 1, characterized in that: A first connecting seat (27) is fixedly mounted on a side end portion of the mounting frame (36), and a filter plate (26) is disposed inside the first connecting seat (27); The bottom end of the sealing cover (25) is rotatably connected to the first connecting seat (27) via a thread.

9. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 1, characterized in that: A second connecting seat (29) is slidably mounted on the side end of the mounting frame (36), a spray head (31) is fixedly mounted on the bottom end of the second connecting seat (29), and a conical cylinder (33) is fixedly mounted on the top end of the spray head (31).

10. A tool mechanism for machining a special-shaped box SR spherical cross section as claimed in claim 8, characterized in that: A telescopic tube (28) is fixedly mounted on the bottom end of the first connecting seat (27), two second telescopic rods (34) are fixedly mounted on the bottom end of the first connecting seat (27), and a closing plate (32) is fixedly mounted inside the telescopic tube (28); The closing plate (32) is designed to be tapered downward, and the end of the second telescopic rod (34) is fixedly connected to the top of the second connecting seat (29).

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