A combined turning and grinding equipment for internal threads

Abstract

This invention discloses a combined turning and grinding machining equipment for internal threads, belonging to the field of internal thread machining technology. It includes a machine tool body, an XY linear motion module, a linear multi-station composite machining mechanism, and a multi-directional adjustable turning and grinding mechanism. The XY linear motion module is fixedly installed on the upper end of the machine tool body. The linear multi-station composite machining mechanism is connected to the moving end of the XY linear motion module. The multi-directional adjustable turning and grinding mechanism is connected to the linear multi-station composite machining mechanism. The multi-directional adjustable turning and grinding mechanism includes a control box, an adjustment component, a movable support component, and a turning and grinding component. Through this method, a small-amplitude, precise tilting angle of the grinding wheel is achieved to match the thread helix angle, while the movable support lifts the turning and grinding component throughout the process, avoiding collision between the turning and grinding component and the inner wall of the small-diameter deep hole, reducing the risk of workpiece damage.

Description

Technical Field

[0001] This invention relates to the field of internal thread processing technology, and more specifically to a combined turning and grinding processing equipment for internal threads. Background Technology

[0002] Internal thread machining is a core process in precision machinery manufacturing, widely used in hydraulics, aerospace, mold making, and other fields. With the increasing demand for deep-hole workpieces with large length-to-diameter ratios and small inner diameters, combined turning and grinding machining has become the mainstream solution that balances efficiency and precision. By removing excess material through rough turning and ensuring thread accuracy through finish grinding, integrated molding can be achieved.

[0003] Chinese patent CN120662891A discloses a combined turning and grinding machining equipment and process for internal thread machining, including a machine tool bed, a workpiece spindle, an internal thread grinding wheel spindle, an internal thread grinding wheel spindle tilting device, and a cutting tool device. The machine tool bed is equipped with an X-axis slide and a Z-axis slide, and the cutting tool device is mounted on the X-axis slide. The cutting tool device includes a tool holder and a deep hole cutting tool with one end fixedly connected to the tool holder. However, this device still has the following problems in use:

[0004] In the initial stage of processing, a large amount of machining allowance needs to be removed from the workpiece. However, the cutting tool is located in a suspended state at a deep position in the machining hole, which can easily cause the cutting tool to vibrate, thus affecting the machining quality and accelerating tool wear. Furthermore, the grinding wheel spindle of the device is directly connected to the output end of the control motor. Since the internal thread grinding wheel spindle needs to be tilted to adapt to the thread angle of the internal thread, and the length of the grinding wheel spindle is relatively short, the internal thread grinding wheel spindle tilting device needs to swing at a larger angle to change the tilt angle at the grinding wheel. At this time, the side of the grinding wheel spindle near the end of the workpiece is prone to collide with the inner wall of the deep hole of the workpiece, thereby increasing the risk of workpiece damage.

[0005] Based on this, the present invention designs an internal thread turning and grinding composite processing equipment to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a combined machining equipment for internal thread turning and grinding.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A combined internal thread turning and grinding machining equipment includes a machine tool body, an XY linear motion module, a linear multi-station composite machining mechanism, and a multi-directional adjustable turning and grinding mechanism;

[0009] The XY linear motion module is fixedly installed on the upper part of the machine tool body;

[0010] The linear multi-station composite machining mechanism used for rough machining of the inner wall of a workpiece and improving support is connected to the moving end of the XY linear motion module.

[0011] A multi-directional adjustable turning and grinding mechanism for turning and grinding internal thread grooves on the inner wall of a workpiece is connected to a linear multi-station composite machining mechanism.

[0012] The multi-directional adjustable turning and grinding mechanism includes a control box, an adjustment component, a movable support component, and a turning and grinding component; the control box is connected to the linear multi-station composite machining mechanism; the adjustment component is connected to the control box; the movable support component is connected to the adjustment component and the control box; the adjustment component is connected to the turning and grinding component and the movable support component.

[0013] Furthermore, the linear multi-station composite machining mechanism includes a hollow rotary gripper, a first fixed seat, a second fixed seat, an auxiliary support assembly, and a roughing assembly; the hollow rotary gripper is fixedly connected to the moving end of the XY linear motion module; the first fixed seat and the second fixed seat are respectively fixedly installed on the upper left and right sides of the machine tool body;

[0014] The auxiliary support assembly is connected to the first fixed base; the rough machining assembly is connected to the second fixed base;

[0015] The multi-directional adjustable milling mechanism is connected to the second fixed seat;

[0016] The control box is fixedly installed on the upper rear side of the second fixed base;

[0017] Furthermore, the auxiliary support assembly includes a support push cylinder, a first connecting ear plate, a movable cylinder, a mating rod, and a pointed block; the support push cylinder is fixedly installed inside the first fixed seat; the first connecting ear plate is fixedly connected to the output end of the support push cylinder; the movable cylinder is fixedly connected to the first connecting ear plate; the mating rod is fixedly installed at the right end of the movable cylinder; and the pointed block is fixedly installed at the right end of the mating rod.

[0018] Furthermore, the roughing assembly includes a mounting block, a mounting rod, and a cutting tool; the mounting block is fixedly mounted on the left end of the second mounting base; the mounting rod is fixedly connected to the mounting block; and the cutting tool is detachably mounted on the left side of the mounting rod.

[0019] Furthermore, the left end of the mounting rod is provided with a mating slot that engages with the pointed block;

[0020] Furthermore, the adjustment assembly includes an arc-shaped moving assembly, a second connecting ear plate, a movable roller, a mounting plate, and a rotation control assembly; the arc-shaped moving assembly is connected to the control box;

[0021] The mounting plate connects to the arc-shaped moving assembly;

[0022] The second connecting ear plate is connected to the arc-shaped moving component;

[0023] The front and rear ends of the movable roller are rotatably connected to the second connecting lug plate and the mounting plate, respectively;

[0024] The movable roller is connected to the arc-shaped moving assembly;

[0025] The mounting plate is connected to the rotation control assembly;

[0026] Furthermore, the arc-shaped moving assembly includes an adjustment control motor, an adjustment drive gear, a driven gear ring, and an arc-shaped guide rail. The adjustment control motor is fixedly mounted on the inner wall of the control box; the adjustment drive gear is rotatably connected to the inner wall of the control box; and the output end of the adjustment control motor is fixedly connected to the adjustment drive gear.

[0027] Arc-shaped guide rails are fixedly installed on the inner wall of the control box and on the left and right sides of the rear end of the control box;

[0028] The driven gear ring is slidably connected to the arc-shaped guide rail installed on the inner wall of the control box; the adjusting drive gear is meshed with the driven gear ring.

[0029] An arc-shaped sliding groove is provided in the middle of the control box;

[0030] The movable roller is in rolling connection with the inner wall of the arc-shaped chute;

[0031] The second connecting ear plate is fixedly connected to the middle of the driven gear ring; the mounting plate is limited and slidably connected to the arc-shaped guide rail installed at the rear end of the control box;

[0032] Furthermore, the rotation control assembly includes a grinding control motor and a control spindle; the grinding control motor is fixedly connected to the mounting plate; the control spindle is fixedly connected to the output end of the grinding control motor.

[0033] The milling assembly is connected to the control spindle;

[0034] Furthermore, the grinding assembly includes a movable shaft and a grinding wheel; the movable shaft is detachably connected to the control spindle; the grinding wheel is fixedly mounted on the left end of the movable shaft;

[0035] The movable axis is connected to the movable support assembly;

[0036] Furthermore, the movable support assembly includes a support ear plate, a rotating frame, and a support sleeve; the support ear plates are symmetrically fixedly installed on the front and rear sides of the left end of the control box; the front and rear ends of the rotating frame are hinged to the ends of the support ear plates on the front and rear sides that are close to each other; the upper and lower sides of the support sleeve are hinged to the upper and lower inner walls of the rotating frame; and the middle part of the movable shaft is rotatably connected to the support sleeve.

[0037] Compared with the prior art, the beneficial effects of this invention are as follows: 1. The workpiece to be internally threaded is fixed by a hollow rotating jaw, and then the XY linear motion module controls the workpiece to move backward between the auxiliary support component and the roughing component located on the front side. Then the XY linear motion module controls the workpiece to move to the right, so that the roughing component extends into the workpiece. Then the auxiliary support component moves in the direction of the roughing component and enters from the left side of the workpiece until the right side of the auxiliary support component contacts and splices with the left side of the roughing component, forming a rigid support for the suspended roughing component, avoiding uneven stress and vibration displacement of the roughing component, improving the roughing accuracy and reducing the wear of the roughing component;

[0038] 2. The hollow rotary gripper controls the workpiece to rotate and move along its direction, completing the initial machining of the workpiece's internal threads with the assistance of the roughing assembly. After roughing, the auxiliary support assembly and XY linear motion module reset. The XY linear motion module then controls the workpiece to move between the rear auxiliary support assembly and the roughing assembly, repeating the above operation to further grind the inner wall of the workpiece. Finally, after completing two roughing operations, the workpiece moves to the left of the control box along with the XY linear motion module. The adjustment assembly then changes the tilt angle of the turning and grinding assembly, ensuring that the turning and grinding assembly aligns with the internal thread groove to be created on the workpiece. The helix angle is the same; when the adjustment component changes the angle of the grinding component, the movable support component will also adjust synchronously with the grinding component, so that the movable support component can always provide support for the grinding component. This ensures that when the device performs internal thread grinding on workpieces with small inner diameters, the side of the grinding component near the end of the workpiece will not directly contact the workpiece, further improving the processing quality of internal threads on workpieces with long inner diameters and small inner diameters. It also enables the grinding wheel to make small and precise swing angles to match the thread helix angle. At the same time, the movable support supports the grinding component throughout the process, avoiding collisions between the grinding component and the inner wall of small inner diameter deep holes, reducing the risk of workpiece damage. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0040] Figure 1 This invention provides a three-dimensional internal thread turning and grinding composite machining equipment. Figure 1 ;

[0041] Figure 2 This is a front view of an internal thread turning and grinding combined processing equipment according to the present invention;

[0042] Figure 3This is a left view of an internal thread turning and grinding combined processing equipment according to the present invention;

[0043] Figure 4 This invention provides a three-dimensional internal thread turning and grinding composite machining equipment. Figure 2 ;

[0044] Figure 5 For along Figure 3 A 3D diagram with a portion removed from the BB direction;

[0045] Figure 6 for Figure 1 Enlarged view of point A in the middle;

[0046] Figure 7 For the local three-dimensional of the multi-directional adjustable mill mechanism Figure 1 ;

[0047] Figure 8 For the local three-dimensional of the multi-directional adjustable mill mechanism Figure 2 ;

[0048] Figure 9 This is a schematic diagram showing a portion of the multi-directional adjustable mill mechanism in operation.

[0049] The labels in the diagram represent:

[0050] 1. Machine tool body; 2. XY linear motion module; 3. Linear multi-station composite machining mechanism; 31. Hollow rotary gripper; 32. First fixed seat; 33. Second fixed seat; 34. Auxiliary support assembly; 341. Support push cylinder; 342. First connecting ear plate; 343. Moving cylinder; 344. Matching rod; 345. Pointed top block; 35. Mounting block; 36. Mounting rod; 37. Lathe tool; 38. Mating slot; 4. Multi 41. Adjustable grinding mechanism; 42. Control box; 43. Adjustable control motor; 44. Adjustable drive gear; 45. Driven gear ring; 46. Arc-shaped guide rail; 47. Second connecting ear plate; 48. Arc-shaped slide groove; 49. Movable roller; 40. Mounting plate; 410. Grinding control motor; 411. Control spindle; 412. Support ear plate; 413. Rotating frame; 414. Support sleeve; 415. Movable shaft; 416. Grinding wheel. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0052] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0053] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-9 A composite machining equipment for internal thread turning and grinding includes a machine tool body 1, an XY linear motion module 2, a linear multi-station composite machining mechanism 3, and a multi-directional adjustable turning and grinding mechanism 4.

[0054] The XY linear motion module 2, used to control the movement of the workpiece for composite machining operations, is fixedly installed on the upper end of the machine tool body 1;

[0055] The linear multi-station composite machining mechanism 3, used for rough machining of the inner wall of the workpiece and improving support force, is connected to the moving end of the XY linear moving module 2.

[0056] The linear multi-station composite machining mechanism 3 includes a hollow rotary gripper 31, a first fixed seat 32, a second fixed seat 33, an auxiliary support assembly 34, and a roughing assembly; the hollow rotary gripper 31 is fixedly connected to the moving end of the XY linear motion module 2; the first fixed seat 32 and the second fixed seat 33 are respectively fixedly installed on the upper left and right sides of the machine tool body 1.

[0057] The auxiliary support assembly 34 is connected to the first fixed base 32; the rough machining assembly is connected to the second fixed base 33.

[0058] Both the roughing assembly and the auxiliary support assembly 34 are provided in two sets;

[0059] The multi-directional adjustable grinding mechanism 4, used for grinding internal thread grooves on the inner wall of a workpiece, is connected to the second fixed seat 33.

[0060] The multi-directional adjustable grinding mechanism 4 includes a control box 41, an adjustment component, a movable support component, and a grinding component; the control box 41 is fixedly installed on the upper rear side of the second fixed seat 33; the adjustment component is connected to the control box 41; the movable support component is connected to the adjustment component and the control box 41; the adjustment component is connected to the grinding component and the movable support component.

[0061] In this invention, the workpiece to be internally threaded is fixed by the hollow rotating gripper 31. Then, the XY linear motion module 2 controls the workpiece to move backward between the auxiliary support component 34 and the roughing component located on the front side. Subsequently, the XY linear motion module 2 controls the workpiece to move to the right, so that the roughing component extends into the workpiece. Then, the auxiliary support component 34 moves in the direction of the roughing component and enters from the left side of the workpiece until the right side of the auxiliary support component 34 contacts and splices with the left side of the roughing component. This avoids uneven stress at the end of the roughing component when it performs grinding operations on a long workpiece, which could lead to damage to the roughing component. This ensures the processing quality of the subsequent internal thread grinding of the workpiece and improves the service life of the device.

[0062] Subsequently, the hollow rotating gripper 31 controls the workpiece to rotate and move along the workpiece direction, and completes the preliminary machining of the internal thread of the workpiece with the cooperation of the roughing assembly.

[0063] After rough machining is completed, the auxiliary support component 34 and the XY linear movement module 2 are reset. The XY linear movement module 2 controls the workpiece to move between the rear auxiliary support component 34 and the rough machining component, and repeats the above operation to further polish the inner wall of the workpiece.

[0064] After completing two roughing operations, the workpiece moves to the left of the control box 41 following the XY linear movement module 2. Then, the adjustment component changes the tilt angle of the turning and grinding component to ensure that the turning and grinding component has the same helix angle as the internal thread groove to be opened on the workpiece.

[0065] Furthermore, when the adjustment component changes the angle of the grinding component, the movable support component will also adjust synchronously with the grinding component, so that the movable support component can always provide support for the grinding component. This ensures that when the device performs internal thread grinding on workpieces with small inner diameters, the side of the grinding component near the end of the workpiece will not directly contact the workpiece, further improving the processing quality of internal threads on workpieces with long inner diameters.

[0066] Example 2: In some embodiments, such as Figures 1-9 As shown, in a preferred embodiment of the present invention, the auxiliary support assembly 34 includes a support push cylinder 341, a first connecting ear plate 342, a moving cylinder 343, a mating rod 344, and a pointed block 345; the support push cylinder 341 is fixedly installed inside the first fixed base 32; the first connecting ear plate 342 is fixedly connected to the output end of the support push cylinder 341; the moving cylinder 343 is fixedly connected to the first connecting ear plate 342; the mating rod 344 is fixedly installed at the right end of the moving cylinder 343; and the pointed block 345 is fixedly installed at the right end of the mating rod 344.

[0067] The roughing assembly includes a mounting block 35, a mounting rod 36, and a cutting tool 37; the mounting block 35 is fixedly mounted on the left end of the second fixed seat 33; the mounting rod 36 is fixedly connected to the mounting block 35; the cutting tool 37 is detachably mounted on the left side of the mounting rod 36; the left end of the mounting rod 36 has a mating slot 38 that engages with the pointed block 345.

[0068] In this invention, the workpiece to be internally threaded is fixed by the hollow rotating gripper 31. Then, the XY linear motion module 2 controls the workpiece to move backward between the mating rod 344 and the mounting rod 36 located on the front side. Subsequently, the XY linear motion module 2 controls the workpiece to move to the right, so that the mounting rod 36 extends into the workpiece. Then, the support push cylinder 341 pulls the first connecting ear plate 342 to move to the right, so that the moving cylinder 343 drives the mating rod 344 and the pointed block 345 to move to the right and enter from the left opening of the workpiece until the pointed block 345 is inserted into the mating slot 38. At this time, the mating rod 344 and the mounting rod 36 are spliced ​​and fixed, thereby supporting and fixing the left end of the mounting rod 36. This avoids uneven stress at the end of the mounting rod 36 when grinding a long workpiece, which could lead to damage to the roughing components. This ensures the processing quality of the subsequent internal thread grinding of the workpiece and improves the service life of the device.

[0069] Subsequently, the hollow rotating jaw 31 controls the workpiece to rotate and move along the workpiece direction, and completes the preliminary machining of the internal thread of the workpiece with the cooperation of the cutting tool 37.

[0070] After rough machining is completed, the support push cylinder 341 and the XY linear movement module 2 are reset. The XY linear movement module 2 controls the workpiece to move between the rear mating rod 344 and the mounting rod 36, and repeats the above operation to further polish the inner wall of the workpiece.

[0071] Example 3: In some embodiments, such as Figures 1-9 As shown, in a preferred embodiment of the present invention, the adjustment assembly includes an adjustment control motor 42, an adjustment drive gear 43, a driven gear ring 44, an arc-shaped guide rail 45, a second connecting ear plate 46, a movable roller 48, a mounting plate 49, and a rotation control assembly; the adjustment control motor 42 is fixedly installed on the inner wall of the control box 41; the adjustment drive gear 43 is rotatably connected to the inner wall of the control box 41; the output end of the adjustment control motor 42 is fixedly connected to the adjustment drive gear 43.

[0072] Arc-shaped guide rails 45 are fixedly installed on the inner wall of the control box 41 and on the left and right sides of the rear end of the control box 41.

[0073] The driven gear ring 44 is slidably connected to the arc-shaped guide rail 45 installed on the inner wall of the control box 41; the adjusting drive gear 43 is meshed with the driven gear ring 44.

[0074] An arc-shaped groove 47 is provided in the middle of the control box 41;

[0075] The second connecting ear plate 46 is fixedly connected to the middle of the driven gear ring 44; the mounting plate 49 is limited and slidably connected to the arc-shaped guide rail 45 installed at the rear end of the control box 41.

[0076] The front and rear ends of the movable roller 48 are rotatably connected to the second connecting ear plate 46 and the mounting plate 49, respectively;

[0077] The movable roller 48 is in rolling connection with the inner wall of the arc-shaped chute 47;

[0078] Mounting plate 49 is connected to the rotation control assembly;

[0079] The rotation control assembly includes a grinding control motor 410 and a control spindle 411; the grinding control motor 410 is fixedly connected to the mounting plate 49; the control spindle 411 is fixedly connected to the output end of the grinding control motor 410.

[0080] The grinding assembly is connected to the control spindle 411;

[0081] The grinding assembly includes a movable shaft 415 and a grinding wheel 416; the movable shaft 415 is detachably connected to the control spindle 411; the grinding wheel 416 is fixedly installed on the left end of the movable shaft 415.

[0082] The movable shaft 415 is connected to the movable support assembly;

[0083] The movable support assembly includes a support ear plate 412, a rotating frame 413, and a support sleeve 414; the support ear plate 412 is symmetrically fixedly installed on the front and rear sides of the left end of the control box 41; the front and rear ends of the rotating frame 413 are hinged to the ends of the support ear plates 412 on the front and rear sides; the upper and lower sides of the support sleeve 414 are hinged to the upper and lower inner walls of the rotating frame 413; the middle part of the movable shaft 415 is rotatably connected to the support sleeve 414.

[0084] In this invention, the workpiece that has completed two roughing operations moves to the left of the grinding wheel 416 following the XY linear movement module 2. Then, the control motor 42 controls the adjustment drive gear 43 to rotate, and the adjustment drive gear 43 controls the driven gear ring 44 to move along the arc guide rail 45. The driven gear ring 44 will drive the movable roller 48 to move synchronously along the arc slide groove 47 through the second connecting ear plate 46, thereby causing the mounting plate 49 to move along the arc guide rail 45 at the rear end of the hollow rotating jaw 31. Then, the control spindle 411 will control the movable shaft 415 to move, so that the movable shaft 415 controls the support sleeve 414 and the rotating frame 413 to swing up or down around the hinge point with the support ear plate 412, thereby changing the tilt angle of the grinding wheel 416 and ensuring that the helix angle of the grinding wheel 416 is the same as that of the internal thread groove to be opened on the workpiece.

[0085] Furthermore, the support sleeve 414 can always provide support for the movable shaft 415, ensuring that when the device performs internal thread grinding on a workpiece with a small inner diameter, the side of the movable shaft 415 near the end of the workpiece will not directly contact the workpiece, further improving the processing quality of the internal threads of workpieces with a long inner diameter.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thread and grinding hybrid machining apparatus comprising a machine tool body (1), characterized in that: It also includes an XY linear motion module (2), a linear multi-station composite machining mechanism (3), and a multi-directional adjustable turning and grinding mechanism (4); The XY linear motion module (2) is fixedly installed on the upper end of the machine tool body (1); The linear multi-station composite machining mechanism (3) used for rough machining of the inner wall of the workpiece and improving the support force is connected to the moving end of the XY linear moving module (2); The multi-directional adjustable grinding mechanism (4) for grinding internal thread grooves on the inner wall of a workpiece is connected to the linear multi-station composite machining mechanism (3); The multi-directional adjustable grinding mechanism (4) includes a control box (41), an adjustment component, a movable support component, and a grinding component; the control box (41) is connected to the linear multi-station composite machining mechanism (3); the adjustment component is connected to the control box (41); the movable support component is connected to the adjustment component and the control box (41); the adjustment component is connected to the grinding component and the movable support component.

2. The box thread complex machining apparatus according to claim 1, characterized by, The linear multi-station composite machining mechanism (3) includes a hollow rotary gripper (31), a first fixed seat (32), a second fixed seat (33), an auxiliary support assembly (34), and a roughing assembly; the hollow rotary gripper (31) is fixedly connected to the moving end of the XY linear motion module (2); the first fixed seat (32) and the second fixed seat (33) are respectively fixedly installed on the upper left and right sides of the machine tool body (1); The auxiliary support assembly (34) is connected to the first fixed base (32); the rough machining assembly is connected to the second fixed base (33); The multi-directional adjustable grinding mechanism (4) is connected to the second fixed seat (33); The control box (41) is fixedly installed on the upper rear side of the second fixed base (33).

3. The box thread complex machining apparatus according to claim 2, characterized by, The auxiliary support assembly (34) includes a support push cylinder (341), a first connecting ear plate (342), a moving cylinder (343), a matching rod (344), and a pointed block (345); the support push cylinder (341) is fixedly installed inside the first fixed seat (32); the first connecting ear plate (342) is fixedly connected to the output end of the support push cylinder (341); the moving cylinder (343) is fixedly connected to the first connecting ear plate (342); the matching rod (344) is fixedly installed at the right end of the moving cylinder (343); and the pointed block (345) is fixedly installed at the right end of the matching rod (344).

4. The box thread complex machining apparatus according to claim 3, characterized by, The roughing assembly includes a mounting block (35), a mounting rod (36), and a cutting tool (37); the mounting block (35) is fixedly mounted on the left end of the second mounting base (33); the mounting rod (36) is fixedly connected to the mounting block (35); and the cutting tool (37) is detachably mounted on the left side of the mounting rod (36).

5. The box thread complex machining apparatus according to claim 4, characterized by, The left end of the mounting rod (36) is provided with a mating slot (38) that engages with the pointed block (345).

6. The internal thread turning and grinding combined processing equipment according to claim 4, characterized in that, The adjustment assembly includes an arc-shaped moving assembly, a second connecting ear plate (46), a movable roller (48), a mounting plate (49), and a rotation control assembly; the arc-shaped moving assembly is connected to the control box (41); The mounting plate (49) is connected to the arc-shaped moving component; The second connecting ear plate (46) is connected to the arc-shaped moving assembly; The front and rear ends of the movable roller (48) are rotatably connected to the second connecting ear plate (46) and the mounting plate (49) respectively; The movable roller (48) is connected to the arc-shaped moving assembly; The mounting plate (49) is connected to the rotation control assembly.

7. The internal thread turning and grinding combined processing equipment according to claim 6, characterized in that, The arc-shaped moving assembly includes an adjustment control motor (42), an adjustment drive gear (43), a driven gear ring (44), and an arc-shaped guide rail (45). The adjustment control motor (42) is fixedly installed on the inner wall of the control box (41); the adjustment drive gear (43) is rotatably connected to the inner wall of the control box (41); and the output end of the adjustment control motor (42) is fixedly connected to the adjustment drive gear (43). Arc-shaped guide rails (45) are fixedly installed on the inner wall of the control box (41) and on the left and right sides of the rear end of the control box (41). The driven gear ring (44) is slidably connected to the arc-shaped guide rail (45) installed on the inner wall of the control box (41); the adjusting drive gear (43) is meshed with the driven gear ring (44); An arc-shaped groove (47) is provided in the middle of the control box (41); The movable roller (48) is in rolling connection with the inner wall of the arc-shaped chute (47); The second connecting ear plate (46) is fixedly connected to the middle of the driven gear ring (44); the mounting plate (49) is limited and slidably connected to the arc-shaped guide rail (45) installed at the rear end of the control box (41).

8. The internal thread turning and grinding combined processing equipment according to claim 7, characterized in that, The rotation control assembly includes a grinding control motor (410) and a control spindle (411); the grinding control motor (410) is fixedly connected to the mounting plate (49); the control spindle (411) is fixedly connected to the output end of the grinding control motor (410); The grinding assembly is connected to the control spindle (411).

9. The internal thread turning and grinding combined processing equipment according to claim 8, characterized in that, The grinding assembly includes a movable shaft (415) and a grinding wheel (416); the movable shaft (415) is detachably connected to the control spindle (411); the grinding wheel (416) is fixedly mounted on the left end of the movable shaft (415); The movable axis (415) is connected to the movable support assembly.

10. The internal thread turning and grinding combined processing equipment according to claim 9, characterized in that, The movable support assembly includes a support ear plate (412), a rotating frame (413), and a support sleeve (414); the support ear plate (412) is symmetrically fixedly installed on the front and rear sides of the left end of the control box (41); the front and rear ends of the rotating frame (413) are hinged to the end of the support ear plate (412) on the front and rear sides; the upper and lower sides of the support sleeve (414) are hinged to the upper and lower inner walls of the rotating frame (413); the middle part of the movable shaft (415) is rotatably connected to the support sleeve (414).

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