Double-station machine tool for machining rolling ring groove of hollow automobile half shaft

Abstract

The invention relates to a double-station machine tool for machining a rolling ring groove of a hollow automobile half shaft. The technical problems that in the prior art, machining efficiency is low, and workpiece bending cannot meet the precision requirement are solved. Comprising a lathe bed, a fixed electric spindle seat is arranged on one side of the upper end of the lathe bed, a movable electric spindle seat is movably arranged on the other side of the upper end of the lathe bed, a space used for containing a hollow automobile half shaft is formed between the fixed electric spindle seat and the movable electric spindle seat, a tip is arranged on the movable electric spindle seat, and an internal expansion post-pulling clamp is arranged on the fixed electric spindle seat. Two tool aprons are movably arranged at the upper end of the lathe bed, a tool apron movable driving mechanism is arranged between the lathe bed and the tool aprons, half shaft rolling ring groove structures are arranged on the tool aprons respectively, and an abutting structure located on the side, away from the tool aprons, of the hollow automobile half shaft is arranged on the lathe bed. The double-station rolling machine has the advantages that the double-station and workpiece rotating three-wheel rolling design mode is adopted, meanwhile, the fixed motorized spindle seat and the movable motorized spindle seat are matched with each other, the double-station rolling machine can adapt to workpieces of different lengths, and practicability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rolling ring groove processing machine tools, and in particular relates to a double-station machine tool for processing rolling ring grooves of hollow automobile half shafts. Background Art

[0002] In the design and manufacture of automobiles, the axle shaft is an important part of the automobile transmission system. The axle shaft is used to transmit the power output by the differential axle shaft gear to the drive wheel or wheel-side reducer. In the traditional process of processing the rolling groove of the automobile axle shaft, a thread rolling machine is usually used for processing. After processing one section, another equipment is used to process the other end, resulting in low processing efficiency. In addition, the thread rolling machine passively rotates the workpiece and forms it by double-wheel rollers, which easily causes the workpiece to bend and fails to meet the precision requirements. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a double-station machine tool for machining rolling ring grooves of hollow automobile half shafts.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a double-station machine tool for processing rolling ring grooves of hollow automobile half shafts, comprising a bed, a fixed electric spindle seat is provided on one side of the upper end of the bed and a movable electric spindle seat is movably provided on the other side, a space for placing the hollow automobile half shaft is formed between the fixed electric spindle seat and the movable electric spindle seat, a top point for abutting against one end of the hollow automobile half shaft is provided on the movable electric spindle seat, an internal expansion and pulling clamp is provided on the fixed electric spindle seat, which can clamp the other end of the hollow automobile half shaft by an internal expansion method and can keep the hollow automobile half shaft moving in a direction away from the top point, two tool seats are movably provided on the upper end of the bed and are located on one side of the hollow automobile half shaft, a tool seat movable driving mechanism is provided between the bed and the tool seat, which can drive the tool seat to vertically lift and lower, horizontally move, and approach or move away from the hollow automobile half shaft, half shaft rolling ring groove structures are respectively provided on the tool seats, and a supporting structure is provided on the bed body and is located on the side of the hollow automobile half shaft away from the tool seat. The fixed electric spindle seat fixes one end of the hollow automobile half shaft through the internal expansion and pulling clamp, and the movable electric spindle seat fixes the other end of the hollow automobile half shaft through the center. The tool holder moves toward the hollow automobile half shaft driven by the tool holder movable driving mechanism, and the half shaft rolling ring groove structure is used to process the surface of the hollow automobile half shaft.

[0005] In the above-mentioned double-station machine tool for processing hollow automobile half-axle rolling ring grooves, the bed is provided with a plurality of horizontal and mutually parallel movable spindle seat guide rails, the movable spindle seat guide rails are slidably provided with a spindle seat slider connected to the movable electric spindle seat, the movable electric spindle seat is provided with a spindle seat moving motor, the output shaft of the spindle seat moving motor is provided with a driving gear, and the driving gear is meshed with a driving rack provided on the bed and parallel to the movable spindle seat guide rails. The movable electric spindle seat is connected to the movable spindle seat guide rails through the spindle seat slider, and the movable electric spindle seat then contacts the driving gear with the driving rack through the spindle seat moving motor, thereby driving the movable electric spindle seat to operate.

[0006] In the above-mentioned double-station machine tool for processing rolling ring grooves of hollow automobile axles, the lower ends of the fixed electric spindle seat and the movable electric spindle seat on the side close to each other are respectively provided with supporting optical axes, and the ends of the supporting optical axes are provided with supporting plates distributed vertically, and the upper ends of the supporting plates have V-shaped supporting grooves for supporting the hollow automobile axles, and the supporting grooves on the upper ends of the two supporting plates are located on the same horizontal plane; the abutment structure includes a backrest arranged at the middle of the upper end of the bed, a backrest is arranged at the upper end of the backrest, a guide optical axis is arranged horizontally at one end of the backrest, and one end of the guide optical axis slides through the movable electric spindle seat, and a plurality of abutment wheels are arranged on the backrest and / or the guide optical axis that can abut against the side of the hollow automobile axle away from the tool seat. The support plate plays a supporting role on the hollow automobile axle to ensure the stability of the hollow automobile axle, and the abutment wheels are used to prevent the hollow automobile axle from deformation when processing the hollow automobile axle.

[0007] In the above-mentioned double-station machine tool for processing rolling ring grooves of hollow automobile half-axles, the internal expansion and post-pulling fixture includes a fixture chuck, one end of the fixture chuck has an end cover seat, a core rod body is axially fixedly penetrated in the end cover seat, and one end of the core rod body passes through the outside of the end cover seat and is inserted into the inner hole of the hollow automobile half-axle, the core rod body is circumferentially sleeved with an internal expansion component extending into the inner hole of the hollow automobile half-axle, a movable seat that is linked to the internal expansion component is movably provided between the fixture chuck and the end cover seat, the internal expansion component includes a fixture seat, the fixture seat is movably sleeved on the core rod body, and one end of the fixture seat has a plurality of internal expansion clamping blocks evenly distributed circumferentially, and the internal expansion clamping blocks do not exceed The end of the core rod body is conical and the diameter of the core rod body gradually increases from one end close to the hollow automobile half-axle to the other end. The inner sides of the clamp seat and the inner expansion component have an inner expansion slope that matches the outer side of the core rod body; a core rod seat is fixedly arranged between the clamp chuck and the end cover seat, the core rod seat is cylindrical with one end open and the other end closed, and one end of the core rod body is coaxially integrally formed at the center of the closed end of the core rod seat, the open end of the core rod seat is fixedly connected to the clamp chuck by a plurality of first mounting bolts, and the end cover seat is fixedly connected to the closed end of the core rod seat by a plurality of second mounting bolts, and the core rod seat is coaxially distributed with the clamp chuck and the end cover seat respectively.

[0008] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is preferably a bolt of a screw bolt. The design structure of internal expansion and back pulling can not only expand the inner hole, but also fit the end face of the hollow automobile half-axle to the fixture by back pulling, which can greatly improve the clamping force and clamping accuracy.

[0009] In the above-mentioned double-station machine tool for processing rolling ring grooves of hollow automobile half shafts, a spindle drive motor is provided on the side of the bed away from the fixed electric spindle seat, the spindle drive motor is connected to the spindle part through a synchronous belt, the spindle part is connected to the fixture chuck, a hydraulic oil tank is provided on the side of the bed close to the spindle drive motor, an oil pump is provided at the upper end of the hydraulic oil tank, one end of the oil pump is connected to the oil pump drive motor, the oil pump is connected to the rotary oil cylinder, and the rotary oil cylinder is connected to the connecting rod body through a hydraulic pull rod.

[0010] In the above-mentioned double-station machine tool for processing hollow automobile half-axle ring grooves, the half-axle ring groove structure includes a groove rolling tool handle, one side of the groove rolling tool handle has a roller mounting portion, and the upper and lower ends of the roller mounting portion are respectively provided with ring groove rollers that are correspondingly arranged and can rotate freely through a rotating mounting structure, and the rotation center axes of the two ring groove rollers are arranged in parallel up and down, and a processing space located on one side of the roller mounting portion and connected to the space is formed between the two ring groove rollers; the two ring groove rollers have the same outer size and are both made of metal materials, and the rotation center axes of the two ring groove rollers are aligned with the hollow automobile half The axis lines of the shafts are parallel to each other, and the annular groove roller has a plurality of annular ribs formed in sequence on the circumferential outer side, and the annular ribs are divided into two narrow ribs symmetrically arranged at both ends of the annular groove roller and two wide ribs symmetrically arranged between the two narrow ribs. The roller mounting portion includes two roller mounting plates vertically corresponding to each other and arranged parallel to each other on one side of the grooved tool handle, one of the two annular groove rollers is rotatably arranged between the upper ends of the two roller mounting plates, and the remaining one annular groove roller is rotatably arranged between the lower ends of the two roller mounting plates, and the annular groove roller and the abutting wheel are staggered in sequence.

[0011] In the above-mentioned double-station machine tool for processing hollow automobile half-axle ring grooves, the upper and lower ends of the roller mounting plate and the side away from the groove rolling tool handle respectively have arc-shaped transition parts, the arc-shaped transition parts on the outer sides of the same end corresponding to the two roller mounting plates are arranged correspondingly to each other, and the outer sides of the ring groove rollers respectively extend beyond the outer sides of the arc-shaped transition parts, the middle part of the roller mounting plate has an arc-shaped recessed part recessed toward the direction of the groove rolling tool handle, the arc-shaped recessed part and the arc-shaped transition part are transitioned by a curve, and the arc-shaped recessed parts in the two roller mounting plates are arranged correspondingly to form the above-mentioned processing space.

[0012] In the above-mentioned double-station machine tool for processing hollow automobile half-axle rolling grooves, the rotating mounting structure includes mounting holes respectively arranged vertically and correspondingly at the upper and lower ends of two roller mounting plates, a latch is passed between the mounting holes on the same end corresponding to the two roller mounting plates, the ring groove roller is arranged on the circumferential outer side of the latch, and a needle bearing sleeve is arranged between the circumferential inner side of the ring groove roller and the circumferential outer side of the latch, the end face of one end of the latch has a non-circular adjustment hole and a pointer mark is arranged on one side of the adjustment hole, the other end of the latch is provided with a ring, and the upper and lower ends of one roller mounting plate in the two roller mounting holes are respectively provided with adjustment scale lines located on the circumferential outer side of the mounting hole and corresponding to the pointer mark, The groove rolling tool handle comprises a vertically arranged and plate-shaped tool handle mounting part, the tool handle mounting part is fixedly connected to the tool seat through a plurality of tool handle mounting holes, a connecting part vertically arranged to the tool handle mounting part is provided on one side of the tool handle mounting part, the roller mounting plates are respectively arranged on the side of the connecting part away from the tool handle mounting part, and the tool handle mounting part, the connecting part and the roller mounting plate are connected as an integrated structure, the upper and lower ends of the roller mounting plate and the connecting part respectively have L-shaped clamping deformation grooves, one end of the clamping deformation groove passes through between the roller mounting plate and the connecting part and the other end is connected to the mounting hole, and the upper and lower ends of the roller mounting plate are provided with clamping bolts that pass through the clamping deformation groove and can adjust the clamping deformation groove. The clamping deformation groove and the adjustment scale line are used to adjust and fix the annular groove roller, thereby ensuring the normal operation of the annular groove roller, and at the same time, through the design structure of the roller mounting part, the hollow automobile half shaft is arranged in the processing space, and the two annular groove rollers can stably process the hollow automobile half shaft, thereby improving the processing accuracy and quality.

[0013] In the above-mentioned double-station machine tool for processing hollow automobile half-axle rolling ring grooves, an axially extending tool holder driving groove is provided on the upper end of the bed, and the tool holder movable driving mechanism includes a Z-axis moving component that can drive the tool holder to move along the Z-axis direction, an X-axis moving component that can drive the tool holder to move along the X-axis direction, and a Y-axis moving component that can drive the tool holder to move along the Y-axis direction. The Z-axis moving component includes Z-axis line rails arranged on both sides of the tool holder driving groove, a thrust bracket is provided at one end of the tool holder driving groove, and a thrust bracket is provided inside the thrust bracket. A Z-axis drive seat with a Z-axis drive rod, wherein the Z-axis drive seat is connected to a Z-axis reducer at one end away from the Z-axis drive rod, a Z-axis motor is arranged at the upper end of the Z-axis reducer, a motor seat is arranged at the end of the tool holder drive slot away from the thrust bracket, a support seat is arranged in the middle of the tool holder drive slot, a screw rod is arranged between the support seat and the motor seat, a screw drive motor connected to the screw rod is arranged at one end of the motor seat, two Z-axis slides are arranged at the upper end of the tool holder drive slot, one of the Z-axis slides is connected to the end of the Z-axis drive rod, and the other A Z-axis slide is connected to a screw rod member through a screw nut, and a plurality of Z-axis sliders corresponding to the Z-axis axis rails are respectively arranged on both sides of the lower end of the Z-axis slide; the X-axis moving assembly comprises an X-axis mounting groove arranged in the Z-axis slide, an X-axis driving seat with an X-axis driving rod is arranged in the X-axis mounting groove, an X-axis driving seat away from the X-axis driving rod is connected to an X-axis reducer, an X-axis motor is arranged at the upper end of the X-axis reducer, an X-axis slide connected to the X-axis driving rod is arranged at the upper end of the Z-axis slide, and the X-axis mounting groove X-axis line rails are respectively provided on both sides, and a plurality of X-axis sliders corresponding to the X-axis line rails are respectively provided on both sides of the lower end of the X-axis slide; the Y-axis moving assembly includes a Y-axis platform arranged at the end of the X-axis slide away from the X-axis motor, the tool holder is arranged below the Y-axis platform, an axially extending Y-axis line rail is provided on one side of the lower end of the Y-axis platform, a Y-axis slider corresponding to the Y-axis line rail is provided on one side of the tool holder, a Y-axis driving cylinder connected to the upper end of the tool holder is provided on the upper end of the Y-axis platform, and a limiting column is provided on the lower end of the Y-axis platform.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. The device adopts a double-station and workpiece rotating three-wheel roller design. At the same time, the fixed electric spindle seat and the movable electric spindle seat cooperate with each other, which can adapt to workpieces of different lengths and improve practicality.

[0016] 2. The device adopts a three-wheel roller rolling method. The cooperation between the ring groove roller and the abutting wheel can effectively ensure the concentricity of the ring groove. At the same time, the size of the ring groove can be adjusted independently, thereby improving the processing efficiency.

[0017] 3. The device adopts an internal expansion and rear pull-type clamp, which greatly increases the clamping force of the workpiece and also ensures the stability of the workpiece during operation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a structural schematic diagram of the present invention from another perspective.

[0020] Figure 3 It is a top view of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the fixed electric spindle seat in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the movable electric spindle seat in the present invention.

[0023] Figure 6 It is a structural explosion diagram of the movable driving mechanism of the knife holder in the present invention.

[0024] Figure 7 It is a structural schematic diagram of the Z-axis moving component in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the X-axis moving component in the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the Y-axis moving component in the present invention.

[0027] Fig.10 It is a structural explosion diagram of the movable electric spindle seat and the bed in the present invention.

[0028] Fig.11 It is a structural cross-sectional view of the internal expansion and rear tensioning clamp of the present invention.

[0029] Fig.12 It is a structural exploded view of the internal expansion and post-tensioning clamp of the present invention.

[0030] Fig.13 It is a structural explosion diagram of the half-shaft rolling ring groove structure in the present invention.

[0031] In the figure: bed 1, fixed electric spindle seat 11, supporting optical axis 111, supporting plate 112, supporting groove 113, tool seat driving groove 114, mobile electric spindle seat 12, hollow automobile half shaft 13, top 14, tool seat 15, mobile spindle seat guide rail 16, spindle seat slider 17, spindle seat moving motor 18, driving gear 19, driving rack 20, internal expansion back-pull fixture 2, fixture chuck 21, end cover seat 22, core rod body 23, internal expansion assembly 24, movable seat 25, fixture seat 26, internal expansion clamp block 27, internal expansion inclined surface 28, core rod seat 29, tool holder movable drive mechanism 3, Z-axis moving assembly 31, Z-axis axis rail 32, thrust bracket 33, Z-axis drive rod 34, Z-axis drive seat 35, Z-axis reducer 36, Z-axis motor 37, motor seat 38, support seat 39, screw rod 391, screw drive motor 392, Z-axis slide 393, screw nut 394, Z-axis slide 395, half-axis rolling ring groove structure 4, rolling groove tool handle 41, roller mounting part 411, ring groove roller 412, annular convex rib 413, narrow convex rib 414, wide convex rib 415, roller mounting plate 4 16, arc-shaped transition portion 417, arc-shaped recessed portion 418, rotating mounting structure 42, mounting hole 421, latch 422, needle bearing sleeve 423, adjustment hole 424, pointer mark 425, ferrule 426, adjustment scale line 427, handle mounting portion 43, handle mounting hole 431, connecting portion 44, clamping deformation groove 45, abutment structure 5, backing 51, backing seat 52, guide light axis 53, abutment wheel 54, movable disk body 6, connecting rod body 61, movable hole 62, linkage rod 63, linkage assembly 64, linkage seat 65, ring shaped limiting portion 66, positioning groove 67, annular clamping portion 68, spindle drive motor 7, synchronous belt 71, spindle member 72, hydraulic oil tank 73, oil pump 74, oil pump drive motor 75, rotary cylinder 76, X-axis moving assembly 8, X-axis mounting groove 81, X-axis drive rod 82, X-axis drive seat 83, X-axis reducer 84, X-axis motor 85, X-axis slide table 86, X-axis line rail 87, X-axis slider 88, Y-axis moving assembly 9, Y-axis platform 91, Y-axis line rail 92, Y-axis slider 93, Y-axis drive cylinder 94, and limiting column 95. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-13As shown, a double-station machine tool for processing rolling ring grooves of hollow automobile half shafts includes a bed 1, a fixed electric spindle seat 11 is provided on one side of the upper end of the bed 1, and a movable electric spindle seat 12 is movably provided on the other side, a space for placing a hollow automobile half shaft 13 is formed between the fixed electric spindle seat 11 and the movable electric spindle seat 12, a top 14 for abutting against one end of the hollow automobile half shaft 13 is provided on the movable electric spindle seat 12, and a tool 14 for clamping the other end of the hollow automobile half shaft 13 by internal expansion is provided on the fixed electric spindle seat 11. The inner expansion and back-pull fixture 2 is used to keep the hollow automobile half shaft 13 moving away from the top 14. Two tool holders 15 are movably provided on the upper end of the bed 1 and are located on one side of the hollow automobile half shaft 13. A tool holder movable driving mechanism 3 is provided between the bed 1 and the tool holder 15, which can drive the tool holder 15 to vertically lift, horizontally move, and approach or move away from the hollow automobile half shaft 13. A half shaft rolling ring groove structure 4 is provided on the tool holder 15, and a supporting structure 5 is provided on the bed 1 on the side of the hollow automobile half shaft 13 away from the tool holder 15. The fixed electric spindle seat 11 fixes one end of the hollow automobile half shaft 13 through the inner expansion and back-pull fixture 2, and the movable electric spindle seat 12 fixes the other end of the hollow automobile half shaft 13 through the top 14. The tool holder 15 moves toward the hollow automobile half shaft 13 driven by the tool holder movable driving mechanism 3, and the surface of the hollow automobile half shaft 13 is processed by the half shaft rolling ring groove structure 4.

[0034] Combination Figure 6 and Fig.10 As shown, the bed 1 is provided with a plurality of horizontal and mutually parallel movable spindle seat guide rails 16, on which the movable spindle seat guide rails 16 are slidably provided with a spindle seat slider 17 connected to the movable electric spindle seat 12, and on the movable electric spindle seat 12 is provided a spindle seat moving motor 18, on which the output shaft of the spindle seat moving motor 18 is provided a driving gear 19, and the driving gear 19 is meshed with a driving rack 20 provided on the bed 1 and parallel to the movable spindle seat guide rails 16. The movable electric spindle seat 12 is connected to the movable spindle seat guide rails 16 through the spindle seat slider 17, and the movable electric spindle seat 12 then makes the driving gear 19 contact with the driving rack 20 through the spindle seat moving motor 18, thereby driving the movable electric spindle seat 12 to operate.

[0035] Combination Figure 4 and Figure 5As shown, a supporting optical axis 111 is respectively provided at the lower end of the side where the fixed electric spindle seat 11 and the movable electric spindle seat 12 are close to each other, and a vertically distributed supporting plate 112 is provided at the end of the supporting optical axis 111, and the upper end of the supporting plate 112 has a V-shaped supporting groove 113 for supporting the hollow automobile half-axle 13, and the supporting grooves 113 at the upper ends of the two supporting plates 112 are located on the same horizontal plane; the abutment structure 5 includes a backrest 51 arranged in the middle of the upper end of the bed 1, a backrest 52 is arranged at the upper end of the backrest 51, a guide optical axis 53 is horizontally arranged at one end of the backrest 52, and one end of the guide optical axis 53 slides through the movable electric spindle seat 12, and a plurality of abutment wheels 54 that can abut against the side of the hollow automobile half-axle 13 away from the tool holder 15 are provided on the backrest 52 and / or the guide optical axis 53. The support plate 112 supports the hollow automobile half shaft 13 to ensure the stability of the hollow automobile half shaft 13 , and the abutment wheel 54 is used to prevent the hollow automobile half shaft 13 from being deformed when the hollow automobile half shaft 13 is processed.

[0036] Combination Fig.11 and Fig.12 As shown, the internal expansion and back-pulling clamp 2 includes a clamp chuck 21, one end of the clamp chuck 21 has an end cover seat 22, a core rod body 23 is axially fixedly penetrated in the end cover seat 22, and one end of the core rod body 23 passes through the outside of the end cover seat 22 and is inserted into the inner hole of the hollow automobile half shaft 13, and the core rod body 23 is sleeved with an internal expansion component 24 extending into the inner hole of the hollow automobile half shaft 13 on the circumferential outer side, and a movable seat 25 linked to the internal expansion component 24 is movably provided between the clamp chuck 21 and the end cover seat 22, and the internal expansion component 24 includes a clamp seat 26, the clamp seat 26 is movably sleeved on the core rod body 23, and one end of the clamp seat 26 has a plurality of internal expansion clamping blocks 27 evenly distributed in the circumferential direction, and the internal expansion clamping blocks 27 do not exceed the end of the core rod body 23, and the core rod body 23 is conical and the diameter of the core rod body 23 gradually increases from one end close to the hollow automobile half-axle 13 to the other end. The inner sides of the clamp seat 26 and the inner expansion component 24 have an inner expansion inclined surface 28 matching the outer side surface of the core rod body 23; a core rod seat 29 is fixedly arranged between the clamp chuck 21 and the end cover seat 22. The core rod seat 29 is cylindrical with one end open and the other end closed, and one end of the core rod body 23 is coaxially integrally formed at the center of the closed end of the core rod seat 29. The open end of the core rod seat 29 is fixedly connected to the clamp chuck 21 by a plurality of first mounting bolts, and the end cover seat 22 is fixedly connected to the closed end of the core rod seat 29 by a plurality of second mounting bolts. The core rod seat 29 is coaxially distributed with the clamp chuck 21 and the end cover seat 22, respectively.

[0037] Among them, the movable seat 25 includes a movable disk body 6 which is axially movably arranged on the circumferential inner side of the core rod seat 29, one end of the movable disk body 6 has a connecting rod body 61 extending from the open end of the core rod seat 29 to the inner side of the clamp chuck 21, and the closed end of the core rod seat 29 has a plurality of movable holes 62 evenly distributed in the circumference, and the other end of the movable disk body 6 has a plurality of linkage rods 63 that movably pass through the movable holes 62, and the linkage rods 63 are connected to the clamp seat 26 through a linkage assembly 64, and the linkage assembly 64 includes a linkage seat 65 which is movably arranged on the inner side of the end cover seat 22 and sleeved on the outer side of the clamp seat 26, one end of the linkage seat 65 has an annular limiting portion 66 on the circumferential inner side that abuts against one end of the clamp seat 26 close to the inner expansion clamping block 27, the end of the linkage rod 63 away from the movable disk body 6 has a positioning groove 67, the other end of the linkage seat 65 is sleeved on the outer side of each linkage rod 63, and the other end of the linkage seat 65 has an annular clamping portion 68 that is mutually clamped with the positioning groove 67 on the circumferential inner side. The design structure of internal expansion and back pulling can not only expand the inner hole, but also fit the end face of the hollow automobile half shaft 13 to the fixture by back pulling, which can greatly improve the clamping force and clamping accuracy.

[0038] like Figure 2 As shown, a spindle drive motor 7 is provided on the side of the bed 1 away from the fixed electric spindle seat 11. The spindle drive motor 7 is connected to the spindle component 72 through a synchronous belt 71. The spindle component 72 is connected to the fixture chuck 21. A hydraulic oil tank 73 is provided on the side of the bed 1 close to the spindle drive motor 7. An oil pump 74 is provided at the upper end of the hydraulic oil tank 73. One end of the oil pump 74 is connected to an oil pump drive motor 75. The oil pump 74 is connected to a rotary oil cylinder 76, and the rotary oil cylinder 76 is connected to the connecting rod body 61 through a hydraulic pull rod.

[0039] Combination Figure 3 and Fig.13As shown, the half-axle ring groove structure 4 includes a groove rolling handle 41, and a roller mounting portion 411 is provided on one side of the groove rolling handle 41. The upper and lower ends of the roller mounting portion 411 are respectively provided with ring groove rollers 412 that are arranged correspondingly and can rotate freely through a rotating mounting structure 42. The rotation center axes of the two ring groove rollers 412 are arranged parallel to each other, and a processing space located on one side of the roller mounting portion 411 and connected to the space is formed between the two ring groove rollers 412; the two ring groove rollers 412 have the same outer size and are both made of metal materials, and the rotation center axes of the two ring groove rollers 412 are parallel to the center axis of the hollow automobile half axle 13, and the ring groove rollers 412 are circumferentially The outer side is provided with a plurality of annular convex ribs 413 formed in sequence, and the annular convex ribs 413 are divided into two narrow convex ribs 414 symmetrically arranged at both ends of the annular groove roller 412 and two wide convex ribs 415 symmetrically arranged between the two narrow convex ribs 414. The roller mounting portion 411 includes two roller mounting plates 416 vertically corresponding to and parallel to each other and arranged on one side of the grooved tool handle 41. One of the two annular groove rollers 412 is rotatably arranged between the upper ends of the two roller mounting plates 416, and the remaining annular groove roller 412 is rotatably arranged between the lower ends of the two roller mounting plates 416, and the annular groove rollers 412 and the abutting wheels 54 are staggered in sequence.

[0040] Among them, the upper and lower ends of the roller mounting plate 416 and the side away from the groove rolling tool handle 41 respectively have an arc transition portion 417, the arc transition portions 417 on the outer side of the same end corresponding to the two roller mounting plates 416 are arranged correspondingly to each other, and the outer sides of the annular groove rollers 412 respectively extend beyond the outer sides of the arc transition portions 417, and the middle part of the roller mounting plate 416 has an arc recessed portion 418 recessed toward the groove rolling tool handle 41, and the arc recessed portion 418 and the arc transition portion 417 are transitioned by a curve, and the arc recessed portions 418 in the two roller mounting plates 416 are arranged correspondingly to form the above-mentioned processing space.

[0041] Specifically, the rotating mounting structure 42 includes mounting holes 421 respectively arranged vertically at the upper and lower ends of the two roller mounting plates 416, a latch pin 422 is inserted between the mounting holes 421 on the same end of the two roller mounting plates 416, the annular groove roller 412 is arranged on the circumferential outer side of the latch pin 422, and a needle bearing sleeve 423 is provided between the circumferential inner side of the annular groove roller 412 and the circumferential outer side of the latch pin 422, the end surface of one end of the latch pin 422 has a non-circular adjustment hole 424 and a pointer mark 425 on one side of the adjustment hole 424, a ring 426 is provided at the other end of the latch pin 422, and an adjustment scale line 427 located on the circumferential outer side of the mounting hole 421 and corresponding to the pointer mark 425 is respectively provided at the upper and lower ends of one roller mounting plate 416 in the two roller mounting holes 421, and the roller groove The shank 41 includes a vertically arranged and plate-shaped shank mounting portion 43, which is fixedly connected to the knife seat 15 through a plurality of shank mounting holes 431, and a connecting portion 44 is provided on one side of the shank mounting portion 43, and a roller mounting plate 416 is respectively arranged on a side of the connecting portion 44 away from the shank mounting portion 43, and the shank mounting portion 43, the connecting portion 44 and the roller mounting plate 416 are connected as an integrated structure, and an L-shaped clamping deformation groove 45 is respectively provided between the upper and lower ends of the roller mounting plate 416 and the connecting portion 44, one end of the clamping deformation groove 45 passes through between the roller mounting plate 416 and the connecting portion 44 and the other end is connected to the mounting hole 421, and clamping bolts that pass through the clamping deformation groove 45 and can adjust the clamping deformation groove 45 are provided at the upper and lower ends of the roller mounting plate 416. The clamping deformation groove 45 and the adjustment scale line 427 are used to adjust the fixed annular groove roller 412 to ensure the normal operation of the annular groove roller 412. At the same time, through the design structure of the roller mounting part 411, the hollow automobile half-axle 13 is set in the processing space, and the two annular groove rollers 412 can stably process the hollow automobile half-axle 13, thereby improving the processing accuracy and quality.

[0042] Combination Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, an axially extending tool holder driving groove 114 is provided at the upper end of the bed 1, and the tool holder movable driving mechanism 3 includes a Z-axis moving component 31 that can drive the tool holder 15 to move along the Z-axis direction, an X-axis moving component 8 that can drive the tool holder 15 to move along the X-axis direction, and a Y-axis moving component 9 that can drive the tool holder 15 to move along the Y-axis direction. The Z-axis moving component 31 includes Z-axis line rails 32 arranged on both sides of the tool holder driving groove 114, a thrust bracket 33 is provided at one end of the tool holder driving groove 114, a Z-axis driving seat 35 with a Z-axis driving rod 34 is provided in the thrust bracket 33, and the Z-axis driving seat 35 is away from A Z-axis reducer 36 is connected to one end of the Z-axis drive rod 34, a Z-axis motor 37 is provided at the upper end of the Z-axis reducer 36, a motor seat 38 is provided at the end of the tool holder drive slot 114 away from the thrust bracket 33, a support seat 39 is provided in the middle of the tool holder drive slot 114, a screw rod 391 is provided between the support seat 39 and the motor seat 38, a screw drive motor 392 connected to the screw rod 391 is provided at one end of the motor seat 38, two Z-axis slides 393 are provided at the upper end of the tool holder drive slot 114, one of the Z-axis slides 393 is connected to the end of the Z-axis drive rod 34, and the other Z-axis slide 393 is connected to the end of the Z-axis drive rod 34 through a screw rod. The nut 394 is connected to the screw rod 391, and a plurality of Z-axis sliders 395 corresponding to the Z-axis line rail 32 are respectively provided on both sides of the lower end of the Z-axis slide 393; the X-axis moving assembly 8 includes an X-axis mounting groove 81 arranged in the Z-axis slide 393, an X-axis driving seat 83 with an X-axis driving rod 82 is arranged in the X-axis mounting groove 81, an X-axis driving seat 83 away from the X-axis driving rod 82 is connected to an X-axis reducer 84 at one end of the X-axis driving seat 83, an X-axis motor 85 is arranged on the upper end of the X-axis reducer 84, an X-axis slide 86 connected to the X-axis driving rod 82 is arranged on the upper end of the Z-axis slide 393, and an X-axis driving seat 86 connected to the X-axis driving rod 82 is arranged on both sides of the X-axis mounting groove 81. X-axis line rails 87 are respectively provided on the sides, and several X-axis sliders 88 corresponding to the X-axis line rails 87 are respectively provided on both sides of the lower end of the X-axis slide 86; the Y-axis moving component 9 includes a Y-axis platform 91 arranged at the end of the X-axis slide 86 away from the X-axis motor 85, the tool holder 15 is arranged below the Y-axis platform 91, an axially extending Y-axis line rail 92 is provided on one side of the lower end of the Y-axis platform 91, a Y-axis slider 93 corresponding to the Y-axis line rail 92 is provided on one side of the tool holder 15, a Y-axis driving cylinder 94 connected to the upper end of the tool holder 15 is provided on the upper end of the Y-axis platform 91, and a limiting column 95 is provided on the lower end of the Y-axis platform 91.

[0043] The principle of this embodiment is:

[0044] The spindle member 72 on the fixed electric spindle seat 11 fixes one end of the hollow automobile half shaft 13 through the internal expansion and pulling clamp 2, and the internal expansion and pulling clamp 2 clamps the hollow automobile half shaft 13 under the action of the hydraulic pull rod, and the movable electric spindle seat 12 fixes the other end of the hollow automobile half shaft 13 through the top 14, and the tool holder 15 moves toward the hollow automobile half shaft 13 driven by the tool holder movable driving mechanism 3, and the abutment wheel 54 on the support seat 52 and / or the guide optical axis 53 contacts one side of the hollow automobile half shaft 13, and the annular groove roller 412 contacts the other side of the hollow automobile half shaft 13, and the pulley roller 412 and the abutment wheel 54 are staggered in sequence; the spindle member 72 rotates with the internal expansion and pulling clamp 2 driven by the spindle drive motor 7, and the hollow automobile half shaft 13 rotates accordingly, and the annular groove roller 412 begins to contact the hollow automobile half shaft 13, thereby processing the surface of the hollow automobile half shaft 13.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0046] Although this article uses more bed 1, fixed electric spindle seat 11, supporting optical axis 111, supporting plate 112, supporting groove 113, tool seat driving groove 114, mobile electric spindle seat 12, hollow automobile half shaft 13, top 14, tool seat 15, mobile spindle seat guide rail 16, spindle seat slider 17, spindle seat moving motor 18, driving gear 19, driving rack 20, internal expansion back tension fixture 2, fixture chuck 21, end cover seat 22, core rod body 23, internal expansion assembly 24, movable seat 25, fixture seat 26, internal expansion clamp block 27, internal expansion inclined surface 28, core rod seat 29, tool holder movable drive mechanism 3, Z-axis moving assembly 31, Z-axis axis rail 32, thrust bracket 33, Z-axis drive rod 34, Z-axis drive seat 35, Z-axis reducer 36, Z-axis motor 37, motor seat 38, support seat 39, screw rod 391, screw drive motor 392, Z-axis slide 393, screw nut 394, Z-axis slide 395, half-axis rolling ring groove structure 4, rolling groove tool handle 41, roller mounting part 411, ring groove roller 412, annular convex rib 413, narrow convex rib 414, wide convex rib 415, roller mounting plate 416, arc-shaped The cross section 417, the arc-shaped recessed section 418, the rotating mounting structure 42, the mounting hole 421, the latch 422, the needle bearing sleeve 423, the adjustment hole 424, the pointer mark 425, the ferrule 426, the adjustment scale line 427, the handle mounting section 43, the handle mounting hole 431, the connecting section 44, the clamping deformation groove 45, the abutment structure 5, the backing 51, the backing seat 52, the guide light axis 53, the abutment wheel 54, the movable disk body 6, the connecting rod body 61, the movable hole 62, the linkage rod 63, the linkage assembly 64, the linkage seat 65, the annular limit portion 66, and the positioning groove 67 , annular clamping part 68, spindle drive motor 7, synchronous belt 71, spindle member 72, hydraulic oil tank 73, oil pump 74, oil pump drive motor 75, rotary oil cylinder 76, X-axis moving assembly 8, X-axis mounting groove 81, X-axis drive rod 82, X-axis drive seat 83, X-axis reducer 84, X-axis motor 85, X-axis slide table 86, X-axis axis rail 87, X-axis slider 88, Y-axis moving assembly 9, Y-axis platform 91, Y-axis axis rail 92, Y-axis slider 93, Y-axis drive cylinder 94, limit column 95 and other terms, but the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A double-station machine tool for machining rolling ring grooves of hollow automobile half shafts, comprising a bed (1), characterized in that: A fixed electric spindle seat (11) is provided on one side of the upper end of the bed (1) and a movable electric spindle seat (12) is movably provided on the other side. A space for placing a hollow automobile half shaft (13) is formed between the fixed electric spindle seat (11) and the movable electric spindle seat (12). A top (14) for abutting against one end of the hollow automobile half shaft (13) is provided on the movable electric spindle seat (12). A fixed electric spindle seat (11) is provided with a clamping member capable of clamping the other end of the hollow automobile half shaft (13) in an internal expansion manner and capable of keeping the hollow automobile half shaft (13) facing away from the top (14). 14) direction movement tendency, two tool holders (15) are movably provided on the upper end of the bed (1) and are located on one side of the hollow automobile half-axle (13), a tool holder movable driving mechanism (3) is provided between the bed (1) and the tool holder (15) and can drive the tool holder (15) to vertically lift, horizontally move, and approach or move away from the hollow automobile half-axle (13), half-axle rolling ring groove structures (4) are respectively provided on the tool holder (15), and a supporting structure (5) is provided on the bed (1) and is located on the side of the hollow automobile half-axle (13) away from the tool holder (15).

2. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 1, characterized in that: The bed (1) is provided with a plurality of horizontal and mutually parallel movable spindle seat guide rails (16); a spindle seat slider (17) connected to a movable electric spindle seat (12) is slidably provided on the movable spindle seat guide rails (16); a spindle seat movable motor (18) is provided on the movable electric spindle seat (12); a driving gear (19) is provided on the output shaft of the spindle seat movable motor (18); and the driving gear (19) is meshed with a driving rack (20) which is provided on the bed (1) and parallel to the movable spindle seat guide rails (16).

3. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 1, characterized in that: The fixed electric spindle seat (11) and the movable electric spindle seat (12) are provided with supporting optical axes (111) at their lower ends on the sides close to each other, and the ends of the supporting optical axes (111) are provided with supporting plates (112) distributed vertically, and the upper ends of the supporting plates (112) are provided with supporting grooves (113) in a V shape for supporting the hollow automobile half-axle (13), and the supporting grooves (113) at the upper ends of the two supporting plates (112) are located on the same horizontal plane; The structure (5) comprises a backrest (51) arranged at the middle of the upper end of the bed (1), a seat (52) being arranged at the upper end of the backrest (51), a guide optical axis (53) being arranged horizontally at one end of the seat (52), and one end of the guide optical axis (53) slidingly passes through the movable electric spindle seat (12), and a plurality of abutment wheels (54) being arranged on the seat (52) and / or the guide optical axis (53) and being capable of abutting against the side of the hollow automobile half shaft (13) away from the tool seat (15).

4. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 1, 2 or 3, characterized in that: The internal expansion and back-pulling clamp (2) comprises a clamp chuck (21), one end of which is provided with an end cover seat (22), a core rod body (23) is axially fixedly inserted in the end cover seat (22), and one end of the core rod body (23) passes through the outside of the end cover seat (22) and is inserted into the inner hole of the hollow automobile half shaft (13), and an internal expansion component (23) extending into the inner hole of the hollow automobile half shaft (13) is sleeved on the circumferential outer side of the core rod body (23). 4), a movable seat (25) is movably provided between the clamp chuck (21) and the end cover seat (22) and is linked to the internal expansion component (24), the internal expansion component (24) comprises a clamp seat (26), the clamp seat (26) is movably sleeved on the core rod body (23), and one end of the clamp seat (26) has a plurality of internal expansion clamping blocks (27) evenly distributed in the circumferential direction, and the internal expansion clamping blocks (27) do not exceed the end of the core rod body (23). The core rod body (23) is conical and the diameter of the core rod body (23) gradually increases from one end close to the hollow automobile half shaft (13) to the other end. The inner sides of the clamp seat (26) and the inner expansion component (24) have an inner expansion slope (28) matching the outer side of the core rod body (23). A core rod seat (29) is fixedly provided between the clamp chuck (21) and the end cover seat (22). The core rod seat (29) is open at one end and closed at the other end. The core rod body (23) is in the shape of a closed cylinder, and one end of the core rod body (23) is coaxially integrally formed at the center of the closed end of the core rod seat (29); the open end of the core rod seat (29) is fixedly connected to the clamp chuck (21) by a plurality of first mounting bolts; the end cover seat (22) is fixedly connected to the closed end of the core rod seat (29) by a plurality of second mounting bolts; the core rod seat (29) is coaxially distributed with the clamp chuck (21) and the end cover seat (22), respectively.

5. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 4, characterized in that: The movable seat (25) comprises a movable disc body (6) axially movably arranged on the inner side of the core rod seat (29), one end of the movable disc body (6) has a connecting rod body (61) extending from the open end of the core rod seat (29) to the inner side of the clamp chuck (21), the closed end of the core rod seat (29) has a plurality of movable holes (62) evenly distributed in the circumferential direction, the other end of the movable disc body (6) has a plurality of linkage rods (63) movably passing through the movable holes (62), and the linkage rods (63) are connected to the clamp seat (26) through a linkage assembly (64), and the linkage assembly (64) is connected to the clamp seat (26). The component (64) comprises a linkage seat (65) movably arranged on the inner side of the end cover seat (22) and sleeved on the outer side of the clamp seat (26); one end of the linkage seat (65) has an annular limiting portion (66) on the inner side thereof, which abuts against one end of the clamp seat (26) close to the inner expansion clamping block (27); one end of the linkage rod (63) away from the movable disk body (6) has a positioning groove (67); the other end of the linkage seat (65) is sleeved on the outer side of each linkage rod (63) and the other end of the linkage seat (65) has an annular clamping portion (68) on the inner side thereof, which is clamped with the positioning groove (67).

6. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 5, characterized in that: A spindle drive motor (7) is provided on the side of the bed (1) away from the fixed electric spindle seat (11), and the spindle drive motor (7) is connected to the spindle component (72) through a synchronous belt (71), and the spindle component (72) is connected to the fixture chuck (21). A hydraulic oil tank (73) is provided on the side of the bed (1) close to the spindle drive motor (7), and an oil pump (74) is provided at the upper end of the hydraulic oil tank (73), and one end of the oil pump (74) is connected to an oil pump drive motor (75), and the oil pump (74) is connected to a rotary oil cylinder (76), and the rotary oil cylinder (76) is connected to a connecting rod body (61) through a hydraulic pull rod.

7. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 3, characterized in that: The half-axle ring groove structure (4) comprises a groove rolling tool handle (41), one side of the groove rolling tool handle (41) is provided with a roller mounting portion (411), the upper and lower ends of the roller mounting portion (411) are respectively provided with ring groove rollers (412) arranged correspondingly and freely rotatable up and down through a rotating mounting structure (42), the rotation center axes of the two ring groove rollers (412) are arranged parallel up and down, and a processing space located on one side of the roller mounting portion (411) and connected to the space is formed between the two ring groove rollers (412); the two ring groove rollers (412) have the same size and are both made of metal material, and the rotation center axes of the two ring groove rollers (412) are parallel to the center axis of the hollow automobile half axle (13), and the circumferential outer side of the ring groove rollers (412) is provided. The invention has a plurality of annular convex ribs (413) formed in sequence, wherein the annular convex ribs (413) are divided into two narrow convex ribs (414) symmetrically arranged at the two ends of the annular groove roller (412) and two wide convex ribs (415) symmetrically arranged between the two narrow convex ribs (414); the roller mounting portion (411) comprises two roller mounting plates (416) vertically corresponding to each other and arranged parallel to each other on one side of the grooved tool handle (41); one of the two annular groove rollers (412) is rotatably arranged between the upper ends of the two roller mounting plates (416), and the remaining one of the annular groove rollers (412) is rotatably arranged between the lower ends of the two roller mounting plates (416); and the annular groove rollers (412) and the abutting wheels (54) are sequentially staggered.

8. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 7, characterized in that: The roller mounting plate (416) has arc-shaped transition portions (417) at both ends and at the side away from the groove rolling tool handle (41). The arc-shaped transition portions (417) on the outer sides of the same end of the two roller mounting plates (416) are arranged correspondingly to each other and the outer sides of the annular groove rollers (412) extend beyond the outer sides of the arc-shaped transition portions (417). The middle part of the roller mounting plate (416) has an arc-shaped recessed portion (418) recessed toward the groove rolling tool handle (41). The arc-shaped recessed portion (418) and the arc-shaped transition portion (417) are transitioned by a curve. The arc-shaped recessed portions (418) in the two roller mounting plates (416) are arranged correspondingly to form the above-mentioned processing space.

9. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 8, characterized in that: The rotating mounting structure (42) comprises mounting holes (421) respectively arranged vertically and correspondingly at the upper and lower ends of the two roller mounting plates (416); a latch (422) is inserted between the mounting holes (421) on the same end of the two roller mounting plates (416); the annular groove roller (412) is arranged on the circumferential outer side of the latch (422); and a needle bearing sleeve (423) is provided between the circumferential inner side of the annular groove roller (412) and the circumferential outer side of the latch (422); The end surface of one end of the latch (422) is provided with a non-circular adjustment hole (424) and one side of the adjustment hole (424) is provided with a pointer mark (425); the other end of the latch (422) is provided with a ring (426); the upper and lower ends of a roller mounting plate (416) in the two roller mounting holes (421) are respectively provided with adjustment scale lines (427) located outside the mounting hole (421) in the circumferential direction and corresponding to the pointer mark (425); the grooved tool handle (41) is provided with a plurality of adjustment scale lines (427) disposed on the outer side of the mounting hole (421) in the circumferential direction and corresponding to the pointer mark (425); The invention comprises a vertically arranged and plate-shaped handle mounting portion (43), wherein the handle mounting portion (43) is fixedly connected to a knife seat (15) via a plurality of handle mounting holes (431), a connecting portion (44) vertically arranged to the handle mounting portion (43) is provided on one side of the handle mounting portion (43), and the roller mounting plates (416) are respectively arranged on one side of the connecting portion (44) away from the handle mounting portion (43), and the handle mounting portion (43), the connecting portion (44) and the roller mounting plates (416) are respectively arranged on one side of the connecting portion (44) away from the handle mounting portion (43). The mounting plate (416) is connected as an integrated structure, and L-shaped clamping deformation grooves (45) are respectively provided between the upper and lower ends of the roller mounting plate (416) and the connecting portion (44), one end of the clamping deformation groove (45) passes through between the roller mounting plate (416) and the connecting portion (44) and the other end is connected to the mounting hole (421), and clamping bolts that pass through the clamping deformation groove (45) and can adjust the clamping deformation groove (45) are provided at the upper and lower ends of the roller mounting plate (416).

10. A double-station machine tool for machining rolling ring grooves of hollow automobile axle shafts according to claim 1, characterized in that: The upper end of the bed (1) is provided with an axially extending tool holder driving groove (114), and the tool holder movable driving mechanism (3) includes a Z-axis moving component (31) capable of driving the tool holder (15) to move along the Z-axis direction, an X-axis moving component (8) capable of driving the tool holder (15) to move along the X-axis direction, and a Y-axis moving component (9) capable of driving the tool holder (15) to move along the Y-axis direction, the Z-axis moving component (31) includes Z-axis line rails (32) arranged on both sides of the tool holder driving groove (114), a thrust bracket (33) is provided at one end of the tool holder driving groove (114), and the thrust bracket (33) is provided with a Z-axis driving seat (35) having a Z-axis driving rod (34), the Z-axis driving seat (35) is connected to a Z-axis reducer (36) at one end away from the Z-axis driving rod (34), and a Z-axis motor (37) is provided at the upper end of the Z-axis reducer (36), and a motor seat (38) is provided at one end of the tool holder driving groove (114) away from the thrust bracket (33), and a support seat (39) is provided in the middle of the tool holder driving groove (114), and a screw rod (391) is provided between the support seat (39) and the motor seat (38), and one end of the motor seat (38) is provided with a screw rod (391) connected to the screw rod (391). The tool holder driving groove (114) is provided with two Z-axis slides (393) at the upper end, wherein one Z-axis slide (393) is connected to the end of the Z-axis driving rod (34), and the other Z-axis slide (393) is connected to the screw rod (391) through a screw nut (394), and a plurality of Z-axis sliders (395) corresponding to the Z-axis line rail (32) are respectively provided on both sides of the lower end of the Z-axis slide (393); the X-axis moving component (8) includes an X-axis mounting groove (81) arranged in the Z-axis slide (393), and the X-axis mounting groove (81) is provided in the Z-axis slide (393). An X-axis drive seat (83) having an X-axis drive rod (82) is arranged in the mounting groove (81); an X-axis reducer (84) is connected to one end of the X-axis drive seat (83) away from the X-axis drive rod (82); an X-axis motor (85) is arranged at the upper end of the X-axis reducer (84); an X-axis slide table (86) connected to the X-axis drive rod (82) is arranged at the upper end of the Z-axis slide table (393); X-axis line rails (87) are arranged on both sides of the X-axis mounting groove (81); and a plurality of X-axis sliders (88) corresponding to the X-axis line rails (87) are arranged on both sides of the lower end of the X-axis slide table (86);The Y-axis moving assembly (9) comprises a Y-axis platform (91) arranged at one end of the X-axis slide (86) away from the X-axis motor (85), the tool holder (15) is arranged below the Y-axis platform (91), one side of the lower end of the Y-axis platform (91) is provided with an axially extending Y-axis rail (92), one side of the tool holder (15) is provided with a Y-axis slider (93) corresponding to the Y-axis rail (92), the upper end of the Y-axis platform (91) is provided with a Y-axis driving cylinder (94) connected to the upper end of the tool holder (15), and the lower end of the Y-axis platform (91) is provided with a limiting column (95). ;

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