Multi-surface cutting machine tool

Abstract

The utility model relates to a multi-face cutting machine tool which comprises a machine tool body, a power cutting machine head and a workpiece device machine head, a cutting fly cutter disc is arranged on the power cutting machine head, a universal linkage transmission device is arranged between the cutting fly cutter disc and the workpiece device machine head, and the universal linkage transmission device is composed of an input shaft portion, a middle shaft portion and an output shaft portion. The input shaft part comprises a universal joint arranged in the center of the cutting fly cutter disc, and a driving gear is fixed on the universal joint; the middle shaft part comprises a middle gear, the output shaft part comprises a driven gear, and the driving gear, the middle gear and the driven gear are meshed with one another. A universal linkage transmission device is additionally arranged between a cutting fly cutter disc and a workpiece device machine head, so that when hexagonal surfaces with different diameters are cut on the same workpiece, the relative positions of a driving gear, a middle gear and a driven gear on a fixed plate and the workpiece to be machined are kept unchanged; therefore, the concentricity of the two sections of cut hexagonal surfaces is not deviated and misplaced, and the precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument lathes, in particular to a multi-faceted cutting machine tool. Background Art

[0002] At present, the processing of multi-faceted parts and products such as octagonal, hexagonal, square or double-plane shapes by machine tools must be completed by milling. Processing workpieces in this way is often complicated, slow, and inefficient. It also requires high technical skills of the operators. It is difficult for different operators or the same operator to obtain uniform specifications for the quality of the processed workpieces, resulting in poor precision of the processed workpieces, and bringing greater labor intensity and low production efficiency.

[0003] China Patent Publication (Announcement) No.: CN2663079Y, Patent Title: High-Speed ​​Precision Multi-Surface Cutting Machine Tool, which discloses "a high-speed precision multi-surface cutting machine tool designed by the utility model, which includes a bed, a power cutting machine head and a workpiece device machine head, a cutting disc is provided on the power cutting machine head, a workpiece chuck is provided on the workpiece device machine head, a universal linkage transmission device is provided between the cutting disc and the workpiece chuck, the cutting edge of the cutting disc is parallel to the cutting plane; the cutting disc is provided with one to eight tools; according to different symmetry requirements of the cutting surface, the tools on the cutting disc can be The arrangement can be equally or unequally divided on the cutting disc; the universal linkage transmission device includes a linkage gear on the central coupling shaft of the cutting disc, a spindle gear on the central spindle of the workpiece chuck, a bridge adjustment gear meshingly connected between the linkage gear and the spindle gear, and a relative displacement device between the linkage gear and the spindle gear; the power cutting machine head and the workpiece device head are arranged at both ends of the bed, and the cutting disc and the workpiece chuck are offset relative to the axis. The power motor can drive the central coupling shaft of the cutting disc or the central spindle of the workpiece chuck.

[0004] The technical effect of "a high-speed precision multi-faceted cutting machine tool obtained by the utility model can realize multi-plane cutting in the process of rotational motion of the workpiece and the tool, thereby completing multi-angle surface processing on the circumferential surface during one feed process, and obtaining multi-angle and multi-faceted processed products, especially for multi-angle and multi-faceted workpieces such as octagonal, hexagonal, square or double-plane, can increase the production efficiency by more than 10 times compared with the original traditional milling processing, and it has very positive practical significance for the reform of traditional processing technology, improving product quality and processing speed, and reducing processing costs" has been achieved.

[0005] In practical applications, it is often necessary to chamfer the end face of the machined workpiece (for example, the two end faces of a hexagonal cylinder) to facilitate the removal of burrs on the part caused by machining and facilitate the assembly of the part. When machining the chamfer with the above high-speed precision multi-surface cutting machine tool, since the gear linkage device is a flexible structure (i.e. its bridge adjustment gear is movable up and down), the connecting gear (driving gear) is rigidly connected with the machine head and cannot move. When moving in the X direction, the bridge adjustment gear moves upward, and the spindle gear (driven gear) will rotate by a certain angle, causing the relative position of the connecting gear and the spindle gear to change. When cutting hexagonal surfaces of different diameters (the cutting tool needs to move when chamfering) on the same workpiece, the coaxiality of the two sections of the hexagonal surface cut will deviate, resulting in a chamfering distortion and misplacement phenomenon (see Figure 10 and Figure 15 ).

[0006] For example, when machining a pagoda-shaped hexagonal shaft (stepped shaft), there is also a phenomenon of mutual distortion and misplacement of the small head and the large head (see Figure 11 and Figure 16 ).

[0007] Therefore, improvement is needed. Content of the utility model

[0008] The utility model aims at providing a multi-surface cutting machine tool to solve the problems in the above background art.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical measures: a multi-surface cutting machine tool, including a bed body as a foundation, a power cutting machine head and a workpiece device machine head fixed on the bed body, characterized in that: a cutting fly cutter disc is arranged on the power cutting machine head, a universal linkage transmission device is arranged between the cutting fly cutter disc and the workpiece device machine head, the universal linkage transmission device is composed of an input shaft part, an intermediate shaft part and an output shaft part; the input shaft part includes a tool holder arranged on the cutting fly cutter disc, a turning tool is arranged on the tool holder, a universal joint is arranged at the center of the cutting fly cutter disc, the other end of the universal joint is movably sleeved on a fixed plate fixedly connected with the bed body, and a driving gear is fixed on the universal joint; the intermediate shaft part includes an intermediate gear, the intermediate gear is installed on the intermediate shaft part center shaft through a first rolling bearing, and the intermediate shaft part center shaft is installed on the fixed plate through a locking bolt; the output shaft part includes a driven gear, the driven gear is fixedly connected with the output shaft part center shaft through a flat key, the output shaft part center shaft is installed and connected with the fixed plate through a second rolling bearing, and a three-jaw chuck for fixing a workpiece to be machined is installed and connected with the output shaft part center shaft; the driving gear, the intermediate gear and the driven gear are meshed with each other.

[0010] Compared with the existing technology, the advantages of the present invention are: by adding a universal linkage transmission device between the cutting fly cutter disc and the workpiece device head, when cutting hexagonal surfaces of different diameters on the same workpiece, the workpiece to be processed needs to be moved forward in the direction of the turning tool (after the large end is cut, it is necessary to move forward when preparing to cut the small end). Since the power cutting head is connected to the universal joint (which can move forward synchronously to compensate for the displacement), the relative positions of the driving gear, intermediate gear, and driven gear on the fixed plate and the workpiece to be processed always remain unchanged (in the existing technology, this position will change, please refer to Figure 5 ). Therefore, the concentricity of the two hexagonal surfaces cut out will not produce deviation or dislocation, and the precision is high.

[0011] As an improvement to the present invention, one end of the universal joint is a six-tooth spline shaft. This design is chosen for its ability to transmit mechanical torque. Six longitudinal tooth-shaped keyways are located on the shaft's exterior, and the rotating member mounted on the shaft also has corresponding keyways, allowing it to rotate synchronously with the shaft. Furthermore, while rotating, it can also slide longitudinally on the shaft.

[0012] As an improvement to the present invention, the six-tooth spline shaft is fitted with an input shaft synchronizing sleeve, which is fixedly connected to the driving gear via a flat key. This design aims to achieve a fixed connection between the six-tooth spline shaft, the input shaft synchronizing sleeve, and the driving gear, thereby synchronously transmitting the rotation of the six-tooth spline shaft (part of the universal joint) to the driving gear.

[0013] As an improvement of the present invention, a rear cover is provided at one end of the intermediate gear, which is then threadedly connected to the central axis of the intermediate shaft by a locking nut. The purpose of selecting this design is that the cooperation between the rear cover and the locking nut prevents the lateral displacement of the intermediate gear.

[0014] As an improvement of the present invention, a flat keyway is provided on the central axis of the output shaft. The purpose of selecting this design is to install a flat key on the flat keyway to achieve a fixed connection between the central axis of the output shaft and the driven gear.

[0015] As an improvement of the present invention, the input shaft synchronous sleeve is mounted on the fixed plate via a third rolling bearing. The purpose of selecting this design is to enable the input shaft synchronous sleeve to be rotatably mounted on the fixed plate.

[0016] As an improvement of the present invention, the tail end of the six-tooth spline shaft is sleeved in the bearing seat. The purpose of selecting this design is to increase the concentricity of the six-tooth spline shaft and prevent it from shaking.

[0017] As an improvement of the present invention, an inner hexagonal spline groove is provided on the inner diameter wall of the input shaft synchronizing sleeve. The purpose of selecting this design is to match the inner hexagonal spline groove with the outer hexagonal spline of the six-tooth spline shaft to achieve synchronous rotation of the input shaft synchronizing sleeve and the six-tooth spline shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0019] In the attached figure:

[0020] Figure 1 It is a three-dimensional diagram of the universal linkage transmission device described in the utility model.

[0021] Figure 2 This is an exploded view of the universal joint transmission device described in the present utility model.

[0022] Figure 3 The three-dimensional input shaft of the utility model Figure 1 .

[0023] Figure 4 The three-dimensional input shaft of the utility model Figure 2 .

[0024] Figure 5 This is a schematic diagram of a gear linkage device in the prior art described in the present invention.

[0025] FIG6 is a perspective view of the multi-faceted cutting machine tool according to the present invention.

[0026] FIG7 is an exploded view of the intermediate shaft portion of the present invention.

[0027] Figure 8 This is an exploded view of the output shaft portion of the present invention.

[0028] Figure 9 It is a three-dimensional diagram of the six-tooth spline shaft described in the utility model.

[0029] Figure 10 This is a schematic diagram of the standard chamfer described in the present invention.

[0030] Figure 11 This is a schematic diagram of the standard pagoda-shaped hexagonal shaft described in the present utility model.

[0031] Figure 12 This is a three-dimensional diagram of the synchronous sleeve of the input shaft portion of the present utility model.

[0032] Figure 13This is a schematic diagram of the transmission belt structure described in the present utility model.

[0033] Figure 14 This is the AA diagram described in the present utility model.

[0034] Figure 15 This is a schematic diagram of the staggered chamfer described in the present invention.

[0035] Figure 16 This is a schematic diagram of the staggered pagoda-shaped hexagonal shaft described in the present invention.

[0036] Explanation of the accompanying symbols: 1. bed; 2. power cutting machine head; 3. workpiece device machine head; 4. cutting fly cutter; 5. universal linkage transmission device; 6. tool holder; 7. turning tool; 8. universal joint; 9. fixing plate; 10. driving gear; 11. intermediate gear; 12. first rolling bearing; 13. center shaft of intermediate shaft; 14. locking bolt; 15. driven gear; 16. center shaft of output shaft; 17. second rolling bearing; 18. workpiece to be processed; 19. three-jaw chuck; 20. six-tooth flower Key shaft; 21. Input shaft synchronization sleeve; 22. Rear cover; 23. Locking nut; 24. Flat keyway; 25. Third rolling bearing; 26. Bearing seat; 27. Hexagonal spline groove; 28. X-axis servo motor; 29. ​​Fixed plate; 30. Interlocking gear; 31. Bridge adjustment gear; 32. Main shaft gear; 33. Universal head; 34. Shaft; 35. Hexagonal cylinder; 36. Chamfer; 37. Small head; 38. Big head; 39. Transmission belt; 40. First synchronous wheel; 41. Second synchronous wheel. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0038] Example 1

[0039] Please refer to Figures 1-16 .

[0040] The present embodiment provides a multi-faceted cutting machine tool, comprising a bed 1 as a base, a power cutting head 2 and a workpiece device head 3 fixed to the bed 1, a cutting fly disc 4 provided on the power cutting head 2, and a universal linkage transmission device 5 provided between the cutting fly disc 4 and the workpiece device head 3 (see Figure 6 ).

[0041] In the embodiments of the present invention, please refer to Figure 2 The universal joint transmission device 5 is composed of an input shaft, an intermediate shaft, and an output shaft. The input shaft is Figure 2The upper region of the fixing plate 9 is the component of the upper region of the fixing plate 9, the middle shaft part is the component of the middle region of the fixing plate 9, and the output shaft part is the component of the bottom region of the fixing plate 9.

[0042] In the embodiment of the present application, please refer to Figure 2 、 Figure 3 and Figure 4 . The input shaft part includes a tool holder 6 arranged on the cutting fly cutter disc 4, a turning tool 7 arranged on the tool holder 6, a universal joint 8 arranged at the center of the cutting fly cutter disc 4, and a driving gear 10 fixed on the universal joint 8.

[0043] Further, please refer to Figure 4 、 Figure 9 and Figure 14 . One end of the universal joint 8 is a six-tooth spline shaft 20 composed of a universal head 33 and a shaft rod 34. The six-tooth spline shaft 20 can transmit mechanical torque, and there are six longitudinal tooth-shaped key grooves on the outer surface of the six-tooth spline shaft 20. The rotating part on the shaft also has a corresponding key groove, which can keep synchronous rotation with the shaft. Moreover, the six-tooth spline shaft 20 can slide longitudinally on the shaft while rotating.

[0044] Further, please refer to Figure 2 . The six-tooth spline shaft 20 is sleeved with an input shaft part synchronous sleeve 21, and the input shaft part synchronous sleeve 21 is fixedly connected with the driving gear 10 through a flat key. This structure can realize the fixed connection between the six-tooth spline shaft 20, the input shaft part synchronous sleeve 21 and the driving gear 10, and synchronously transmit the rotation of the six-tooth spline shaft 20 (part of the universal joint 8) to the driving gear 10.

[0045] Further, the input shaft part synchronous sleeve 21 is installed in the fixing disc 29 through a third rolling bearing 25, and the fixing disc 29 is installed on the fixing plate 9 by a plurality of bolts.

[0046] Further, the tail end of the six-tooth spline shaft 20 is sleeved in a bearing seat 26. This structure can increase the concentricity of the six-tooth spline shaft 20 and prevent it from shaking.

[0047] Further, an inner six-tooth spline groove 27 is arranged on the inner diameter wall of the input shaft part synchronous sleeve 21. The inner six-tooth spline groove 27 matches the outer six-tooth spline of the six-tooth spline shaft 20, so as to realize the synchronous rotation of the input shaft part synchronous sleeve 21 and the six-tooth spline shaft 20.

[0048] In the embodiment of the present application, please refer to Figure 7The intermediate shaft part comprises an intermediate gear 11, which is installed on an intermediate shaft part central shaft 13 through a first rolling bearing 12, and the intermediate shaft part central shaft 13 is installed on the fixed plate 9 through a locking bolt 14.

[0049] Further, please refer to Figure 7 One end of the intermediate gear 11 is provided with a rear cover 22, and the rear cover 22 is fixedly connected with the intermediate shaft part central shaft 13 through a locking nut 23. The purpose of selecting this design is that the rear cover 22 cooperates with the locking nut 23 to prevent the transverse displacement of the intermediate gear 11.

[0050] In the embodiments of the utility model application, please refer to Figure 8 The output shaft part comprises a driven gear 15, which is fixedly connected with an output shaft part central shaft 16 through a flat key, the output shaft part central shaft 16 is installed and connected with the fixed plate 9 through a second rolling bearing 17, and the output shaft part central shaft 16 is installed and connected with a three-jaw chuck 19 for fixing a workpiece 18 to be machined.

[0051] Further, the output shaft part central shaft 16 is provided with a flat key groove 24. The flat key is installed on the flat key groove 24, so that the output shaft part central shaft 16 is fixedly connected with the driven gear 15.

[0052] Taking the machining of a pyramid type hexagonal stepped shaft as an example, please refer to Figure 1 Three turning tools 7 are installed on the cutting fly cutter disc 4, the power cutting head 2 rotates to drive the universal joint 8 to rotate synchronously, the driving gear 10 on the universal joint 8 rotates to drive the intermediate gear 11 and the driven gear 15 to rotate, and the driven gear 15 has the same rotating speed as the driving gear 10 due to the arrangement of the intermediate gear 11, but the direction is opposite. The driven gear 15 drives the three-jaw chuck 19 to rotate through the workpiece device head 3, so that the turning tool 7 cuts the workpiece 18 to be machined.

[0053] When the cutting of the hexagonal surface on the large head of the pyramid type hexagonal stepped shaft is completed, the workpiece device head 3 is driven by the X-direction servo motor 28 to move the workpiece 18 to be machined towards the turning tool 7 (preparing to machine the small head 37), and the driving gear 10, the intermediate gear 11 and the driven gear 15 on the fixed plate 9 always keep the relative position unchanged with the workpiece 18 to be machined (in the prior art, this position will change, please refer to Figure 5 ).

[0054] From the attached Figure 5It can be seen that the original three gears, when the workpiece device head 3 moves telescopically in the X direction, the movement of the middle adjusting wheel will cause the driven wheel to rotate a certain angle (because the two are always in a meshing state), so that the position changes. In the prior art, only one hexagonal surface is processed on the hexagonal cylinder 35 (only one large head is processed, in this case the workpiece 18 to be processed does not need to be moved), so the workpiece device head 3 is fixed. If a second hexagonal surface is to be processed (that is, another small head 37 is processed to form a stepped shaft shape with the large head), the position of the driven wheel will rotate a certain angle, and the workpiece 18 to be processed will also rotate a certain angle synchronously, causing the relative position of the turning tool 7 and the workpiece 18 to be processed to change, that is, the cutting position is changed, which will cause distortion and misalignment (see Figure 11 and Figure 16 , comparing the two with each other).

[0055] The three gears on the fixed plate 9, namely the driving gear 10, the intermediate gear 11, and the driven gear 15, are meshed and can only rotate, not move left or right or up or down. When machining cutting surfaces of different diameters, driven by the X-axis servo motor 28, the compensating displacement of the universal joint 8 connected to the power cutting head 2 is achieved. The relative position of the turning tool 7 and the workpiece 18 to be machined does not change, and the concentricity of the two hexagonal surfaces is consistent, so there is no misalignment and high precision.

[0056] In the prior art, when this multi-faceted cutting machine tool is used to machine the chamfer 36 of a hexagonal cylinder 35 (i.e., when machining a pagoda-shaped hexagonal shaft), because its gear linkage is a flexible structure (i.e., its bridge adjustment gear 31 is movable up and down), the linkage gear 30 (equivalent to the driving wheel) is rigidly connected to the machine head and cannot move. When the X-axis moves, the bridge adjustment gear 31 moves upward, and the main shaft gear 32 (equivalent to the driven wheel) rotates a certain angle, causing the relative position of the linkage gear 30 and the main shaft gear 32 to change. When cutting hexagonal surfaces of different diameters on the same workpiece (when cutting chamfers, the turning tool needs to move), the coaxiality of the two cut hexagonal surfaces (large head 38 and small head 37) will deviate, resulting in chamfer distortion and misalignment (see Figure 11 and Figure 16 , comparing the two with each other).

[0057] It should be noted that the driving gear 10, the intermediate gear 11 and the driven gear 15 of the universal joint transmission device 5 are meshed with each other to transmit power torque. The gear transmission structure can also be replaced by a transmission belt structure in the prior art. Please refer to Figure 13That is, the first synchronous wheel 40 is used to replace the driving gear 10, the second synchronous wheel 41 is used to replace the driven gear 15, the transmission belt 39 is used for transmission, the intermediate gear 11 and other parts are omitted, and the rotation direction is the same as that of the gear transmission structure.

[0058] Generally, one to eight turning tools 7 can be arranged on the cutting fly cutter disc 4, but the number of the turning tools can be selected according to the machining surface (generally, one tool is used to machine two surfaces, and the number of the tools can be increased arbitrarily), for example, eight turning tools are arranged for machining 16 surfaces.

[0059] Different numbers of cutting surfaces can be realized under different rotation speed ratios of the workpiece device head 3 and the cutting fly cutter disc 4, and the rotation speed ratio is determined by the tooth number of the driving gear 10 and the driven gear 15, and generally, the gear ratio is 1:2, that is, one tool is used to machine two surfaces, if the gear ratio is 1:3, one tool is used to machine three surfaces, two tools are used to machine six surfaces, and three tools are used to machine nine surfaces.

[0060] The universal linkage transmission device 5 adopting the transmission belt structure, and the rotation speed ratio is determined by the circumferential length of the two synchronous wheels.

[0061] These are prior art, which will not be repeated here.

[0062] The beneficial effects of the utility model lie in that the universal linkage transmission device 5 is arranged between the cutting fly cutter disc 4 and the workpiece device head 3, when different diameter hexagonal surfaces are machined on the same workpiece, the workpiece to be machined 18 needs to be moved forward to the direction of the turning tool 7 (the large head 38 is machined, and the small head 37 needs to be moved forward), since the power cutting head 2 is connected with the universal joint 8 (it can be moved forward synchronously, so as to compensate the displacement), the relative positions of the driving gear 10, the intermediate gear 11 and the driven gear 15 on the fixed plate 9 are always unchanged (in the prior art, the position changes, please refer to Figure 5 Therefore, the concentricity of the two machined hexagonal surfaces will not be deviated, and the precision is high, so that the production efficiency is improved.

[0063] In the description of the utility model, it should be explained that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as a limitation of the utility model.

[0064] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " set ", " install ", " link ", " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, can understand the specific meaning of the above-mentioned terms in the utility model according to specific circumstances.

[0065] Finally, it should be noted that: the above only for the preferred embodiments of the utility model and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement for part of the technical features。Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-faceted cutting machine tool comprising a bed (1) as a base, a power cutting head (2) and a workpiece holding head (3) fixed to the bed (1), wherein: The power cutting machine head (2) is provided with a cutting fly disc (4), and a universal linkage transmission device (5) is provided between the cutting fly disc (4) and the workpiece device head (3). The universal linkage transmission device (5) is composed of an input shaft, an intermediate shaft, and an output shaft; the input shaft includes a tool holder (6) provided on the cutting fly disc (4), a turning tool (7) is provided on the tool holder (6), and a universal joint (8) is provided at the center of the cutting fly disc (4). The other end of the universal joint (8) can be movably sleeved on a fixed plate (9) connected and fixed to the bed (1), and a driving gear (10) is fixed on the universal joint (8); the intermediate shaft includes an intermediate gear (11), the intermediate gear (11) is mounted on the center shaft (13) of the intermediate shaft portion through a first rolling bearing (12), and the center shaft (13) of the intermediate shaft portion is mounted on the fixed plate (9) through a locking bolt (14); the output shaft portion includes a passive gear (15), the passive gear (15) is fixedly connected to the center shaft (16) of the output shaft portion through a flat key, the center shaft (16) of the output shaft portion is mounted and connected to the fixed plate (9) through a second rolling bearing (17), and the center shaft (16) of the output shaft portion is mounted and connected with a three-jaw chuck (19) for fixing a workpiece to be processed (18); the driving gear (10), the intermediate gear (11), and the passive gear (15) are meshed with each other.

2. The multi-faceted cutting machine tool according to claim 1, wherein: One end of the universal joint (8) is a six-tooth spline shaft (20).

3. The multi-faceted cutting machine tool according to claim 2, wherein: An input shaft portion synchronization sleeve (21) is sleeved on the six-tooth spline shaft (20), and the input shaft portion synchronization sleeve (21) is fixedly connected to the driving gear (10) via a flat key.

4. The multi-faceted cutting machine tool according to claim 1, wherein: One end of the intermediate gear (11) is provided with a rear cover (22), which is then threadedly connected and fixed to the central shaft (13) of the intermediate shaft portion using a locking nut (23).

5. The multi-faceted cutting machine tool according to claim 1, wherein: A flat keyway (24) is provided on the central axis (16) of the output shaft portion.

6. The multi-faceted cutting machine tool according to claim 3, wherein: The input shaft synchronization sleeve (21) is mounted in a fixed disk (29) via a third rolling bearing (25), and the fixed disk (29) is then mounted on a fixed plate (9) using bolts.

7. The multi-faceted cutting machine tool according to claim 2, wherein: The tail end of the six-tooth spline shaft (20) is sleeved in the bearing seat (26).

8. The multi-faceted cutting machine tool according to claim 3, wherein: An inner hexagonal spline groove (27) is provided on the inner diameter wall of the input shaft synchronous sleeve (21).

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