Shaft part machining device

Abstract

The application belongs to the technical field of part finishing, and specifically discloses a shaft part machining device, which comprises a base, a main shaft box is arranged on one side of the upper end surface of the base, a hydraulic caliper is installed at the end of the main shaft box, a turning frame is arranged on the upper end surface of the base and located at one side of the main shaft box, a sliding seat is connected to the turning frame through an X-axis driving sliding rail mechanism arranged on one side of the turning frame, a double-shaft adjusting seat is arranged on the upper end of the sliding seat, a mounting seat is fixedly connected above the double-shaft adjusting seat, a tool holder is connected to the upper end surface of the mounting seat through a mounting block arranged on the mounting seat, a tailstock is fixedly installed above one end of the turning frame, a tool block is installed in the tool holder, a rotary joint is connected to the outer wall of one side of the tool holder through a transmission mechanism arranged on the outer wall, and a negative pressure pump is arranged on the outer wall of the tool holder and located at the rotary joint. The application effectively solves the problems of resonance and long chips in the turning of slender shafts, and improves the machining quality and efficiency of shaft parts.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field related to part finishing, and specifically discloses an axle part machining device. BACKGROUND

[0002] Axle parts are one of the most basic and important mechanical parts in mechanical engineering, which refers to a rotary body part with a length greater than a diameter, used to support rotating parts (such as gears, pulleys, couplings, etc.), and to transmit motion and torque. Its main functions are to bear load, transmit motion and power, and play a key supporting and transmission role in various mechanical equipment, and are widely used in many fields such as automobiles, machine tools, aerospace, ships, metallurgy, and mining. For example, the transmission shaft of an automobile is responsible for transmitting power from the engine to the wheels; the spindle of a machine tool supports the cutter and drives it to rotate to realize cutting; the motor shaft connects the rotor and the load and transmits electromagnetic torque. Turning is the main process of axle part machining, which is used to machine the outer circle, end face, thread and other surfaces to ensure the dimensional accuracy and surface roughness of the diameter and length of the axle.

[0003] Chinese patent No. CN109604642A discloses an axle part automatic machining device and method. The characteristics of the machining device are that the main shaft of the lathe is fixed with a clamp, the main shaft of the lathe is driven by a main shaft servo motor, the side of the main shaft of the lathe is fixed with a rotating speed sensor, the main shaft servo motor is controlled by a frequency converter, the left and right deviation of the lathe is driven by the lathe, the feed of the tool holder is driven by a tool holder feed servo motor, the front part of the tool holder is fixed with a tool, the rear part of the tool is fixed with a turning force sensor, the lower part of the lathe is fixed with a lathe position sensor, and the lower part of the tool holder is fixed with a tool holder position sensor. The machining method is: selecting blank and tool, planning turning track, selecting initial turning speed; the turning process is encoded by an encoder; turning is carried out according to the planned turning mode; data is collected and transmitted to the lathe controller in real time; the main shaft speed is adjusted, and the turning track is corrected in real time. The application has the advantages of high control precision and realizes accurate control.

[0004] The above document mainly solves the precision problem of turning operation.

[0005] However, when machining slender shafts, the workpiece is fixed by hydraulic clamps, and the other end of the slender shaft is suspended during turning. The middle section is prone to resonance, resulting in vibration marks on the surface of the slender shaft, and the machining is relatively rough. In addition, axle parts made of some special ductile materials (stainless steel, aluminum alloy) will form continuous long chips during external surface turning, which will wrap around the workpiece or tool, scratch the machined surface, and affect the machining operation.

[0006] Therefore, an axle part machining device is proposed to solve the above problems. SUMMARY

[0007] The utility model aims at solving the problems in the prior art and provides an axle part machining device, which comprises a base, a main shaft box is arranged on one side of the upper end face of the base, a hydraulic caliper is installed at the end of the main shaft box, a turning frame is arranged on the upper end face of the base and on one side of the main shaft box, a sliding seat is connected to the turning frame on one side through an X-axis drive sliding rail mechanism, a double-shaft adjusting seat is arranged on the upper end of the sliding seat, a mounting seat is fixedly connected above the double-shaft adjusting seat, a tool holder is connected to the upper end face of the mounting seat through a mounting block, a tailstock is fixedly installed above one end of the turning frame, a tool block is installed in the tool holder, a rotary joint is connected to the outer wall of one side of the tool holder through a transmission mechanism, a negative pressure pump is arranged on the outer wall of the tool holder and at the rotary joint, the rotary joint is rotatably sleeved at the port of the negative pressure pump, a rotary pipe is communicated and installed at the end of the rotary joint away from the negative pressure pump, adsorption mechanisms are equidistantly arranged in the rotary pipe, and dust hoppers are symmetrically installed on the outer wall of one side of the tool holder.

[0008] In the above technical solution, further, the transmission mechanism comprises a No. 2 motor arranged on the outer wall of one side of the tool holder, the output end of the No. 2 motor is connected to the rotary joint through a belt pulley assembly, an L-shaped block is arranged on the outer edge of one side of the tool holder and close to the upper side, and the output end of the No. 2 motor is rotatably inserted into the L-shaped block.

[0009] In the above technical solution, further, the adsorption mechanisms comprise pipes equidistantly and communicatively installed in the rotary pipe in the horizontal direction, a plurality of pipe outer ends are jointly sleeved with a clamping shell, support seats are arranged on the outer edges of the upper and lower ends of the clamping shell, and a plurality of sets of chip rotating mechanisms are symmetrically arranged in the support seats.

[0010] In the above technical solution, further, the plurality of sets of chip rotating mechanisms comprise a rotating shaft rotatably installed in the support seat, rotating spline blades are installed on the upper and lower parts of the rotating shaft, a gear is fixedly sleeved on the lower part of the rotating shaft, a rack is slidably inserted into one side of the support seat, the rack is in meshing connection with the gear, a push block is fixedly installed on the side of the rack away from the gear, a reciprocating air cylinder is arranged on the outer side of the push block, a triangular disc is installed at the end of the rotary pipe, and the reciprocating air cylinder is fixedly installed on the outer side of the triangular disc.

[0011] In the above technical solution, further, air inlets are formed in the inner sides of the two sets of dust hoppers close to each other, the outer surfaces of the two sets of dust hoppers close to each other are obliquely arranged, the interiors of the two sets of dust hoppers are in communication through a U-shaped pipe, an air suction pipe is communicatively installed at one end of the U-shaped pipe, a negative pressure suction mechanism is communicatively installed at the end of the air suction pipe away from the U-shaped pipe, and the negative pressure suction mechanism is arranged on the upper end face of the double-shaft adjusting seat.

[0012] In the above technical scheme, further, the front end outer wall of the tool holder is symmetrically provided with connecting rods, two ends of the connecting rods are jointly provided with a cross frame, a lead screw is rotatably installed inside the cross frame, one end of the lead screw is provided with a first motor, two ends of the lead screw are respectively threadedly sleeved with stable clamping rods, arc-shaped grooves adapted to shaft workpieces are formed in the inner sides of the stable clamping rods close to each other, a plurality of universal ball bearings are rotatably embedded in the arc-shaped grooves, a connecting pipe is installed on the outer wall of one side of the stable clamping rod, and a cooling air blowing pipe is communicated and installed at one end inside the connecting pipe.

[0013] In the above technical scheme, further, the tool holder is symmetrically and slidably installed with slide frames below one side of the chip suction hopper, and the upper end faces of the two slide frames are jointly provided with a collection box.

[0014] In the above technical scheme, further, the inner thread faces of the stable clamping rods are symmetrically arranged, the upper end outer wall of the stable clamping rod is slidably attached to the inside of the cross frame, a baffle is arranged on one side of the outer wall of the main shaft box, and the cross frame slides inside the baffle.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. The symmetrical stable clamping rods are driven by the lead screw and the first motor to cooperate with the universal ball bearings to form a dynamic flexible support on the overhanging section of the workpiece, greatly reducing the risk of bending deformation and resonance during the turning of the slender shaft, and the design of the arc-shaped groove and the universal ball bearing enables the workpiece to maintain the freedom in the horizontal and vertical directions during rotation, avoids clamping interference, improves the system rigidity, and eliminates vibration marks.

[0017] 2. The long cuttings generated during the machining of the tool block are guided between the two chip suction hoppers through the rotary joint, the belt pulley assembly and the rotary pipe, the long cuttings are wound by the rotation of the plurality of pipes, the rotary spline blade is driven by the reciprocating cylinder to move the rack bar reciprocally, the rack bar is engaged with the gear at the corresponding position during movement to drive the rotation shaft and the rotary spline blade to rotate, and the long cuttings are subjected to high-frequency shearing and crushed, at the same time, the circumferential adsorption port of the rotary pipe cooperates with the negative pressure pump to form a local negative pressure air field at the cutting point, and the design of the inclined surface of the chip suction hopper enables the chips to be sucked into the inside of the chip suction hopper.

[0018] 3. The cooling air blowing pipe arranged on one side of the stable clamping rod can cool the outer surface of the workpiece according to the temperature during machining, thereby avoiding the influence of thermal deformation of the workpiece on the precision. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is another angle schematic diagram of the overall connection structure of the present application;

[0021] Figure 3 Schematic diagram of the connection structure between the tool holder and the cross frame of the present invention;

[0022] Figure 4 Schematic diagram of the connection structure between the cross frame and the stabilizing clamping rod of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the stabilizing clamping rod and the cooling air blowing pipe of the present invention;

[0024] Figure 6 Schematic diagram of the connection structure between the tool holder and the adsorption mechanism of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the adsorption structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the disassembled connection structure between the rotary joint and the rotary tube of the present invention;

[0027] Figure 9 This is a schematic diagram of the connection structure of the adsorption structure of the present invention from another angle;

[0028] Figure 10 For the present invention Figure 9 A schematic diagram of the structure at center A;

[0029] Figure 11 For the present invention Figure 9 Enlarged schematic diagram of the structure at point B in the middle.

[0030] In the figure: 1. Base; 2. Turning frame; 3. Spindle box; 4. Hydraulic caliper; 5. Stabilizing clamping rod; 6. Horizontal frame; 7. Tool holder; 8. Tailstock; 9. X-axis drive slide mechanism; 10. Negative pressure suction mechanism; 11. Slide; 12. Dual-axis adjustment seat; 13. Mounting seat; 14. Baffle; 15. Tool block; 16. Slide; 17. Screw; 18. Chip suction bucket; 19. Collection box; 20. Connecting rod; 21. Universal ball; 22. No. 1 motor; 23. Arc groove; 24. Connecting pipe; 25. Cooling air blow pipe; 26. Triangular disc; 27. Pulley assembly; 28. Intake pipe; 29. ​​Mounting block; 30. No. 2 motor; 31. U-shaped pipe; 32. L-shaped block; 33. Rotating pipe; 34. Winding pipe; 35. Negative pressure pump; 36. Reciprocating cylinder; 37. Push block; 38. Support seat; 39. Rack; 40. Rotating shaft; 41. Rotating spline blade; 42. Gear; 43. Jam; 44. Rotary joint. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be recognized by one skilled in the art that the present application can be practiced without the specific details and, therefore, the scope of the present application is not limited to the details disclosed herein.

[0033] As shown in Figures 1-11 A kind of shaft parts machining device, including base 1, the upper end surface of base 1 one side is provided with main shaft box 3, hydraulic caliper 4 is installed at the end of main shaft box 3, the upper end surface of base 1 and located in the side of main shaft box 3 is provided with turning frame 2, one side of turning frame 2 is connected with sliding seat 11 by setting X-axis drive slide rail mechanism 9, double shaft adjusting seat 12 is set on the upper end of sliding seat 11, mounting seat 13 is fixedly connected above double shaft adjusting seat 12, the upper end surface of mounting seat 13 is connected with tool holder 7 by setting mounting block 29, tailstock 8 is fixedly installed above one end of turning frame 2, tool holder 7 is installed with tool block 15, rotary joint 44 is connected with the outer wall of one side of tool holder 7 by setting transmission mechanism, negative pressure pump 35 is set on the outer wall of tool holder 7 and located at rotary joint 44, rotary joint 44 is rotatably connected at the port of negative pressure pump 35, rotary pipe 33 is communicated and installed at the end away from negative pressure pump 35 of rotary joint 44, adsorption mechanism is set equidistantly in rotary pipe 33, chip scoop 18 is symmetrically installed on the outer wall of one side of tool holder 7 at both ends;

[0034] As shown in the accompanying drawings Figure 1 And Figure 2 It can be known that X-axis drive slide rail mechanism 9 can be combined with linear guide rail and servo motor, drive sliding seat 11 to move horizontally, drive tool holder 7 to move synchronously and complete the basic work of turning;

[0035] Hydraulic caliper 4 is used for clamping one end of slender shaft, cooperate with main shaft box 3 to drive workpiece to rotate, tailstock 8 provides auxiliary support.

[0036] Transmission mechanism includes No. 2 motor 30 set on the outer wall of one side of tool holder 7, the output end of No. 2 motor 30 is connected with rotary joint 44 through connecting belt pulley assembly 27, L-shaped block 32 is set on the outer edge of one side of tool holder 7 and close to the upper side, the output end of No. 2 motor 30 is rotatably inserted in the inside of L-shaped block 32;

[0037] As shown in the accompanying drawings Figure 3 And Figure 4 It can be known that No. 2 motor 30 drives rotary joint 44 to rotate through belt pulley assembly 27, corresponding rotary pipe 33 is synchronously rotated, L-shaped block 32 is supported at one end of No. 2 motor 30.

[0038] The adsorption mechanism comprises a plurality of winding pipes 34 installed inside the rotating pipe 33 and connected with each other at equal intervals in the horizontal direction, the outer ends of the plurality of winding pipes 34 are jointly sleeved with a clamping shell 43, the outer edges of the upper and lower ends of the clamping shell 43 are provided with support seats 38, a plurality of chip rotating mechanisms are symmetrically arranged inside the support seats 38, the chip rotating mechanism comprises a rotating shaft 40 rotatably installed inside the support seat 38, rotating spline blades 41 are installed on the outer side of the rotating shaft 40, a gear 42 is fixedly sleeved on the outer side of the rotating shaft 40, a rack 39 is slidably inserted into one side of the support seat 38, the rack 39 is in meshing connection with the gear 42, a push block 37 is fixedly installed on the side of the rack 39 away from the gear 42, a reciprocating air cylinder 36 is arranged on the outer side of the push block 37, and a triangular disc 26 is installed at the end of the rotating pipe 33;

[0039] Referring to the drawings Figures 6-11 It can be known that when the rotating pipe 33 rotates, the plurality of winding pipes 34 and the clamping shell 43 on the outside correspondingly rotate, the winding pipe 34 can take the tool block 15 to the upper long cuttings for winding, in addition, the rotating pipe 33 is connected with the negative pressure pump 35, so that the winding pipe 34 can adsorb the long cuttings in the rotating process, and the long cuttings are prevented from being wound on the outer surface of the workpiece.

[0040] Then the reciprocating air cylinder 36 drives the rack 39 to reciprocate by pushing the push block 37, the gear 42 in meshing connection drives the rotating spline blades 41 and the rotating shaft 40 to rotate at high frequency, and the long cuttings wound are sheared;

[0041] The triangular disc 26 stably supports the driving of the reciprocating air cylinder 36 at one end of the rotating pipe 33.

[0042] The inner sides of the two groups of chip hoppers 18 close to each other are provided with air inlets, and the outer surfaces of the two groups of chip hoppers 18 close to each other are provided in a slope, the interiors of the two groups of chip hoppers 18 are connected in communication through a U-shaped pipe 31, one end of the U-shaped pipe 31 is connected with an air suction pipe 28, one end of the air suction pipe 28 away from the U-shaped pipe 31 is connected with a negative pressure suction mechanism 10, and the negative pressure suction mechanism 10 is arranged on the upper end face of the double-shaft adjusting seat 12.

[0043] Referring to the drawings Figure 5 It can be known that the two groups of chip hoppers 18 are designed in a slope, the cuttings after being cut are connected in communication through the negative pressure suction mechanism 10, the air suction pipe 28 and the U-shaped pipe 31, and a negative pressure airflow is formed in the local part of the chip hopper 18, so that the cuttings are adsorbed.

[0044] The outer wall of the front end of the tool holder 7 is symmetrically provided with a connecting rod 20, and the ends of the two connecting rods 20 are jointly provided with a cross frame 6. A lead screw 17 is rotatably installed inside the lower part of the cross frame 6. One end of the lead screw 17 is provided with a first motor 22. The outer ends of the lead screw 17 are respectively threadedly sleeved with stable clamping rods 5. The inner sides of the sides close to each other of the stable clamping rods 5 are both provided with arc-shaped grooves 23 matched with shaft workpieces. A plurality of universal ball bearings 21 are rotatably embedded in the arc-shaped grooves 23. A connecting pipe 24 is installed on the outer wall of one side of the stable clamping rod 5. A cooling air blowing pipe 25 is communicatively installed at one end inside the connecting pipe 24. The threaded surfaces inside the stable clamping rods 5 are symmetrically arranged. The upper end outer wall of the stable clamping rod 5 is in sliding fit with the inside of the cross frame 6. A baffle 14 is arranged on one side of the outer wall of the main shaft box 3. One end of the cross frame 6 slides inside the baffle 14.

[0045] Referring to the drawings Figures 3-5 It can be known that the first motor 22 drives the two stable clamping rods 5 to move towards each other until the universal ball bearings 21 inside the arc-shaped grooves 23 are in close contact with the overhanging outer surface of the workpiece. During the turning operation, stable support force is provided for the middle part of the workpiece, so that vibration of the workpiece caused by excessive grinding of the tool block 15 is avoided, and vibration marks are not generated on the surface of the workpiece. The universal ball bearings 21 can provide their own degrees of freedom when the cross frame 6 moves with the tool holder 7 and the workpiece rotates under the action of the hydraulic clamp 4, so that clamping interference is avoided.

[0046] The cooling air blowing pipe 25 can be in communication with external cooling fan devices through the connecting pipe 24. During the workpiece machining process, cooling air flow can be sprayed on the outer surface to avoid deformation caused by overheating of the workpiece.

[0047] The tool holder 7 is symmetrically and slidingly installed with carriages 16 below one side of the chip suction hopper 18. The upper end faces of the two carriages 16 are jointly provided with a collection box 19.

[0048] Referring to the drawings Figure 3 It can be known that the collection box 19 is located below the lower ends of the workpiece and the tool block 15, and can collect part of the falling debris. The two carriages 16 can be slid out from one end of the tool holder 7, and the debris can be concentrated for treatment afterwards.

[0049] Working principle: The slender shaft workpiece is clamped at one end by the hydraulic clamp 4 and freely overhangs at the other end. The first motor 22 is started to drive the lead screw 17 to rotate, and the two stable clamping rods 5 are driven to move towards each other along the inside of the cross frame 6 until the universal ball bearings 21 in the arc-shaped grooves 23 are in flexible contact with the outer surface of the workpiece, providing support for the overhanging section for subsequent machining.

[0050] The long cuttings brought out by the turning of the outer surface of the workpiece are guided upward by the inclined surface of the tool block 15, enter between the chip suction hoppers 18 on both sides of the outer wall of the tool holder 7, the negative pressure suction mechanism 10 sucks air through the air suction pipe 28 and the U-shaped pipe 31 to form a local negative pressure air field, at the same time, the second motor 30 drives the rotary joint 44 to rotate through the belt pulley assembly 27, and then drives the rotary pipe 33 and the internal winding pipe 34 to rotate at high speed, the adsorption ports distributed in the circumferential direction of the winding pipe 34 cooperate with the negative pressure pump 35 when rotating, and the adsorption force on the cuttings is enhanced, and the long cuttings are wound around the winding pipe 34, the triangular disc 26 at the end of the rotary pipe 33 drives the reciprocating cylinder 36 to reciprocate, the push block 37 is pushed by the extension end of the reciprocating cylinder 36, the rack 39 reciprocates in the support seat 38, the rack 39 is engaged with the gear 42, the rotating shaft 40 and the rotating spline blade 41 are driven to rotate at high frequency, the long cuttings wound on the winding pipe 34 are sheared and crushed to form chips, the crushed chips fall into the chip suction hopper 18 and are temporarily stored inside, and part of the chips fall into the lower collecting box 19, in this way, the precision and reliability of the slender shaft turning process can be greatly improved, after the machining is completed, the first motor 22 flips the stable clamping rod 5 to loosen the workpiece, and then the workpiece can be taken out.

[0051] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the farthest embodiments of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A shaft part machining device comprising a base (1), characterized in that: The upper end face of the base (1) is provided with a main shaft box (3), the end of the main shaft box (3) is provided with a hydraulic caliper (4), the upper end face of the base (1) and the side of the main shaft box (3) are provided with a turning frame (2), the side of the turning frame (2) is connected with a sliding seat (11) through the X-axis drive sliding rail mechanism (9), the upper end of the sliding seat (11) is provided with a double shaft adjusting seat (12), the upper side of the double shaft adjusting seat (12) is fixedly connected with a mounting seat (13), the upper end face of the mounting seat (13) is connected with a tool holder (7) through the mounting block (29), the one end of the turning frame (2) is fixedly installed with a tailstock (8), the inside of the tool holder (7) is installed with a tool block (15), the outside wall of the side of the tool holder (7) is connected with a rotary joint (44) through the transmission mechanism, the outside wall of the tool holder (7) and the rotary joint (44) are provided with a negative pressure pump (35), the rotary joint (44) is rotatably connected with the port of the negative pressure pump (35), the end of the rotary joint (44) is communicated with a rotary pipe (33), the inside of the rotary pipe (33) is provided with an adsorption mechanism along the equidistant direction, the outside wall of the side of the tool holder (7) is symmetrically installed with a chip suction hopper (18), the adsorption mechanism includes a winding pipe (34) which is installed in the inside of the rotary pipe (33) along the equidistant direction, the outside end of the winding pipe (34) is commonly connected with a clamping shell (43), the upper and lower ends of the clamping shell (43) are provided with a supporting seat (38), the inside of the supporting seat (38) is symmetrically provided with a plurality of chip rotating mechanisms, the chip rotating mechanism includes a rotating shaft (40) which is rotatably installed in the inside of the supporting seat (38), the rotating shaft (40) is installed with a rotary spline blade (41) on the upper and lower sides, the rotating shaft (40) is fixedly installed with a gear (42) on the lower side, the inside of the supporting seat (38) is slidably inserted with a rack (39), the rack (39) is meshingly connected with the gear (42), the side of the rack (39) away from the gear (42) is fixedly installed with a push block (37), the outside of the push block (37) is provided with a reciprocating air cylinder (36), the end of the rotary pipe (33) is installed with a triangular disc (26), the end of the reciprocating air cylinder (36) is fixedly installed on the outside of the triangular disc (26), the outside wall of the front end of the tool holder (7) is symmetrically provided with a connecting rod (20), the ends of the connecting rods (20) are commonly installed with a cross frame (6), the inside of the cross frame (6) is rotatably installed with a lead screw (17), the end of the lead screw (17) is provided with a first motor (22), the outside of the lead screw (17) is threadedly connected with a stable clamping rod (5) at the two ends, the inside of the side of the stable clamping rod (5) which is close to each other is provided with an arc-shaped groove (23) which is matched with the shaft workpiece, the arc-shaped groove (23) is rotatably embedded with a plurality of universal ball bearings (21), the outside wall of the side of the stable clamping rod (5) is installed with a connecting pipe (24), the inside of the connecting pipe (24) is communicated with a cooling air blowing pipe (25) at the end.

2. The shaft part machining device according to claim 1, characterized by: The transmission mechanism includes a No. 2 motor (30) arranged on one side of the outer wall of the tool holder (7), the output end of the No. 2 motor (30) is connected with the rotary joint (44) through the connected belt pulley assembly (27), the L-shaped block (32) is arranged on the outer edge of one side of the tool holder (7) and close to the upper side, and the output end of the No. 2 motor (30) is rotatably inserted into the L-shaped block (32).

3. The shaft part machining device according to claim 1, characterized by: Two groups of the dust absorption hoppers (18) are internally provided with air inlets on the side close to each other, the outer surfaces of the side close to each other of the dust absorption hoppers (18) are all arranged as inclined surfaces, the interiors of the two dust absorption hoppers (18) are communicated through the commonly connected U-shaped pipe (31), the U-shaped pipe (31) is communicated with the air suction pipe (28) at one end, the air suction pipe (28) is communicated with the negative pressure suction mechanism (10) at the end away from the U-shaped pipe (31), and the negative pressure suction mechanism (10) is arranged on the upper end surface of the double-shaft adjusting base (12).

4. The shaft part machining device according to claim 1, characterized by: The tool holder (7) is symmetrically and slidingly installed with the sliding frames (16) below the side of the dust absorption hopper (18), and the upper end surfaces of the two sliding frames (16) are commonly installed with the collecting box (19).

5. The shaft part machining device according to claim 1, characterized by: The internal threaded surface of the stable clamping rod (5) is symmetrically arranged, the upper end outer wall of the stable clamping rod (5) is slidingly attached to the interior of the cross frame (6), the outer wall of the main shaft box (3) is provided with the baffle (14) on one side, and one end of the cross frame (6) is slidingly arranged in the baffle (14).

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