CN211804217U - Composite processing numerical control machine tool for processing worm by generating method - Google Patents

Abstract

The utility model provides a combined machining digit control machine tool of exhibition method processing worm, including the lathe bed, lathe bed upper portion is equipped with the main shaft, be equipped with the saddle that moves along Z axle direction on the middle guide rail of lathe bed upper portion, be equipped with the work piece bracket on the saddle, be equipped with the well slide that can move along X axle direction on the guide rail of saddle, well slide upper surface both ends are equipped with turning tool rest and hob frame respectively, well slide upper surface is used for fixed hob frame position department to be equipped with the pivot angle mechanism, the pivot axis that is parallel with X axle direction in the pivot angle mechanism forms the revolving axle A, the hob frame is located on the guide rail of pivot angle mechanism front end and can be followed the guide rail direction and moved, the rotatory B revolving axle that. The utility model discloses well this integrated turning of digit control machine tool structure, gear hobbing, or mill tooth, or turning tooth processing method in an organic whole, adjust convenient operation, machining efficiency is high, and processingquality is good, is favorable to big batch, high-efficient, automated production.

Description

Composite processing numerical control machine tool for processing worm by generating method

Technical Field

The utility model belongs to the technical field of the digit control machine tool, concretely relates to combined machining digit control machine tool for generating method processing worm.

Background

The machining of parts such as gears, synchronous pulleys, chain wheels, worm wheels, worms and the like can be completed only by a plurality of procedures such as turning, gear hobbing, gear milling, gear turning and the like. For the machining of the parts, the traditional machining procedures mostly need to carry out turning machining firstly and then hobbing, or gear milling or gear turning machining, generally speaking, two or more devices are needed to finish the machining, and the machining can be finished by multiple times of sequence conversion, clamping and alignment, so that the machining efficiency is low, and the large-scale, efficient and automatic production is not facilitated. There is therefore a need for improvements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a combined machining digit control machine tool of generating method processing worm, the utility model discloses well main shaft and counter spindle are used for to work piece location, rotation, support and automatic tune, and saddle and well slide drive turning cutter frame carry out turning to the work piece, also drive pivot angle mechanism and the hob head on it mills the tooth, hobbing, the processing of turning tooth to the work piece, this digit control machine tool structure integration turning, hobbing, or mill the tooth, or the processing method of turning tooth is in an organic whole, adjust convenient operation, machining efficiency is high, high quality of machining is good, be favorable to big batch, high-efficient, automated production.

The utility model adopts the technical proposal that: the composite processing numerical control machine tool for processing the worm by the generating method comprises a tool body, wherein the tool body is provided with an X-axis direction, a Y-axis direction and a Z-axis direction which are mutually vertical; the upper part of the lathe bed is provided with a main shaft which is arranged at the left end of the upper part of the lathe bed and rotates to form a C1 revolving shaft, a saddle moving along the Z-axis direction is arranged on the middle guide rail at the upper part of the lathe bed, a workpiece bracket for guiding and supporting a workpiece is arranged on the saddle, a middle sliding plate which can move along the X-axis direction is arranged on a guide rail of the saddle, a turning tool rest and a hob rest are respectively arranged at two ends of the upper surface of the middle sliding plate, the turning tool rest is arranged at one end of the upper surface of the middle sliding plate close to an operator, the hob is erected at one end of the upper surface of the middle sliding plate far away from the operator, a swing angle mechanism is arranged at the position of the upper surface of the middle sliding plate for fixing the hob head, a rotating shaft parallel to the X-axis direction on the swing angle mechanism forms a rotating shaft A, the hob is erected on a guide rail at the front end of the swing angle mechanism and can move along the direction of the guide rail, and a cutter on the hob holder rotates to form a B rotating shaft.

In order to further limit the technical scheme, the turning tool rest adopts a turret tool rest or an arranged tool rest; the turret tool rest is fixed on the upper surface of the middle sliding plate through a tool rest base plate; as shown in fig. 4, the gang tool rest includes a tool holder plate fixedly connected to the middle slide plate, the tool holder plate having a plurality of tool holders thereon, and the tool holders having tools fixed thereto.

In order to further limit the technical scheme, the swing angle mechanism is directly and fixedly connected with the upper surface of the middle sliding plate through the box body; or a hob head sliding plate is vertically arranged at the rear part of the swing angle mechanism, an upright post is vertically and fixedly arranged on the upper surface of the middle sliding plate, a vertical guide rail for mounting the hob head sliding plate is arranged on the front surface of the upright post, and the hob head sliding plate is mounted on the vertical guide rail of the upright post and can move up and down along the Y-axis direction.

In a further limitation of the above technical solution, as shown in fig. 5, the hob head includes a front support, a hob bar, a rear support, and a hob driving motor; the front support and the rear support are arranged on a guide rail at the front end of the swing angle mechanism, the cutter bar is arranged between the front support and the rear support, and the cutter bar is provided with a hobbing cutter or a forming milling cutter, a finger-shaped milling cutter and a tooth turning cutter; the hob driving motor is connected to the front support and drives the cutter bar and the cutter on the cutter bar to rotate by driving the main shaft in the front support; when the hob cutter or the forming milling cutter, the finger-shaped milling cutter and the gear turning cutter are installed on the cutter bar, the axial space of the cutter bar is filled by adding the cutter pads with different thicknesses at the two ends of the cutter bar due to the length difference of different cutters.

In order to further limit the technical scheme, as shown in fig. 7 and 8, the swing angle mechanism comprises a swing angle box body, a worm wheel, a hand wheel, a swing angle rotating main shaft, a hob head connecting seat, a main ruler angle dial, an auxiliary ruler angle dial and an angle encoder; the worm and the worm wheel are orthogonally arranged in the swing angle box body, and a hand wheel or a servo motor which is connected with the worm to drive the worm to rotate is arranged outside the swing angle box body; the main ruler angle dial and the auxiliary ruler angle dial are respectively arranged on the swing angle box body and the hob holder connecting seat; the other end of the swing angle rotating main shaft penetrates through the swing angle box body and is fixedly connected with the angle encoder to feed back the actual angle of the hob head to an operator.

The technical scheme is further limited, a tail auxiliary mechanism is arranged at the upper part of the machine body, the tail auxiliary mechanism is coaxially opposite to the main shaft and is arranged at the right end of the upper part of the machine body, and the tail auxiliary mechanism can move on the machine body along the W-axis direction parallel to the Z-axis direction through a driving structure; as shown in fig. 6, the tail auxiliary mechanism includes a sub-spindle or a tailstock; the auxiliary main shaft rotates to form a C2 revolving shaft; the tailstock comprises a tailstock body arranged on the lathe body and moving along the W-axis direction, a sleeve is arranged at the front end of the tailstock body, a top is arranged at the front end of the sleeve, and the top is a dead top or a live top.

The technical scheme is further limited, the workpiece bracket comprises a bracket and a guide sleeve, the bracket is fixed on the saddle and can move along the Z-axis direction along with the saddle, the guide sleeve is installed on the bracket and is coaxial with the axis of the main shaft, and the guide sleeve is a fixed guide sleeve or a rotary guide sleeve.

In order to further limit the technical scheme, the bed body and the saddle respectively adopt a flat bed body and a flat saddle, or the bed body and the saddle respectively adopt a flat bed body and an inclined saddle, or the bed body and the saddle respectively adopt an inclined bed body and a flat saddle.

The utility model has the advantages compared with the prior art:

1. the numerical control machine tool is convenient to adjust and operate, high in machining efficiency and good in machining quality, and is beneficial to large-batch, high-efficiency and automatic production;

2. in the scheme, the hob head is supported by the swing angle mechanism, and the swing angle mechanism can be rotated according to the helix angle of a workpiece and the helix angle requirement of the hobbing cutter, so that the hob head rotates to a correct position along with the swing angle mechanism, the angle processing requirement of the workpiece is met, and the hob head is more convenient to adjust and use;

3. in the scheme, the hob head and the turning tool rest are arranged on the same component, namely a middle sliding plate, and are driven by the same group of servo motors and lead screws, the hob head feeds along an X axis, and the turning tool rest retracts along the X axis; vice versa; therefore, the machine tool has a compact structure, the space of a processing area can be greatly saved, and the machine collision accident caused by misoperation is avoided;

4. the numerical control machine tool integrates linear moving shafts of an X shaft, a Y shaft, a Z shaft and a W shaft and rotating shafts of an A shaft, a B shaft, a C1 shaft and a C2 shaft, and the shafts independently move or are linked in a multi-shaft mode according to the machining forming principle of specific workpieces so as to complete the machining, gear hobbing, gear milling or gear turning of parts such as gears, synchronous belt wheels, chain wheels, worm wheels, worms and the like, so that the machining processes of the gear parts are integrated, and the machining processes are convenient to adjust.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the present invention;

FIG. 3 is a schematic structural view of a workpiece carrier according to the present invention;

fig. 4 is a schematic structural view of the middle-row tool rest of the present invention;

fig. 5 is a schematic structural view of the hob head of the present invention;

fig. 6 is a schematic structural view of the middle tail seat of the present invention;

fig. 7 is a schematic structural view of the swing angle mechanism of the present invention;

fig. 8 is a sectional view taken along the line a-a in fig. 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one.. said element does not exclude the presence of other like elements in the process, method, article or apparatus that comprises the element.

Please refer to fig. 1-8, which illustrate an embodiment of the present invention.

Example 1: a combined machining numerical control machine tool for machining a worm by a generating method, as shown in fig. 1, comprises a machine body 1, wherein the machine body 1 has an X-axis direction, a Y-axis direction and a Z-axis direction which are perpendicular to each other; the upper part of the lathe bed 1 is provided with a main shaft 2, the main shaft 2 is arranged at the left end of the upper part of the lathe bed 1, and the axis of the main shaft is parallel to the Z-axis direction to form a C1 revolving shaft. A saddle 4 moving along the Z-axis direction is arranged on a middle guide rail on the upper part of the lathe body 1, the movement of the saddle 4 is driven by a servo motor and a screw rod structure, and the structure is a common technology on a lathe and is not elaborated herein. The saddle 4 is provided with a workpiece bracket 7 for guiding and supporting a workpiece 12, the saddle 4 is provided with a middle sliding plate 5 on a guide rail, the middle sliding plate 5 can move along the X-axis direction, the movement of the middle sliding plate 5 is driven by a servo motor and a lead screw structure, and the structure is common technology on a machine tool and is not described in detail herein. The two ends of the upper surface of the middle sliding plate 5 are respectively provided with a turning tool rest 6 and a hob head 11, the turning tool rest 6 is arranged at one end, close to an operator, of the upper surface of the middle sliding plate 5, the hob head 11 is arranged at one end, far away from the operator, of the upper surface of the middle sliding plate 5, a swing angle mechanism 10 is arranged at a position, used for fixing the hob head 11, on the upper surface of the middle sliding plate 5, a rotating shaft parallel to the X-axis direction on the swing angle mechanism 10 forms a rotating shaft A, and the hob head 11 is arranged on a guide rail at the front end of the swing angle mechanism 10 and can move along the guide rail direction, so that the cutter moving motion and the alignment of a certain tooth or a certain; the cutters on the hob head 11 rotate to form a B rotating shaft.

In this embodiment, the spindle 2 is used for positioning, rotating, supporting and automatically turning the workpiece 12, the saddle 4 and the middle sliding plate 5 can drive the turning tool rest 6 to turn the workpiece 12, and simultaneously drive the swing angle mechanism 10 and the hob head 11 thereon to mill, hobbing and lathe the workpiece 12, and the numerical control machine integrates the turning, hobbing or gear milling or gear lathing methods into a whole, so that the adjustment operation is convenient, the processing efficiency is high, the processing quality is good, and the numerical control machine is favorable for large-batch, high-efficiency and automatic production.

In addition, the turning tool rest 6 and the hob rest 11 are arranged on the same component, namely the middle sliding plate 5, and are driven by the same set of servo motor and lead screw; when the hob head 11 feeds along the X axis, the turning tool head 6 retreats along the X axis; vice versa, so, compact structure can practice thrift the processing district space greatly to avoid the maloperation to cause the machine collision accident.

Example 2: the present embodiment is a further definition of the specific structure of the turning holder 6: the turning tool rest 6 adopts a turret tool rest 61 or an gang tool rest 62, and can be selected according to specific processing workpieces and working procedures in the processing process. The turret tool post 61 is fixed to the upper surface of the middle slide 5 by a tool post base plate 611 when it is mounted. The row-type tool rest 62 comprises a tool holder plate 621 fixedly connected with the middle sliding plate 5, a plurality of tool holders 622 are arranged on the tool holder plate 621, and different tools 623 can be respectively fixed on the tool holders 622 to meet different processing requirements.

Example 3: the present embodiment is a further limitation on the fixing manner of the swing angle mechanism 10: the swing angle mechanism 10 can be directly and fixedly connected with the upper surface of the middle sliding plate 5 through the box body. Or, the installation mode of the swing angle mechanism 10 can realize that the swing angle mechanism moves up and down along the Y axis direction, specifically, a hob head sliding plate 9 is vertically arranged at the rear part of the swing angle mechanism 10, an upright post 8 is vertically and fixedly arranged on the upper surface of the middle sliding plate 5, a vertical guide rail for installing the hob head sliding plate 9 is arranged on the front surface of the upright post 8, the hob head sliding plate 9 is arranged on the vertical guide rail of the upright post 8 and can move up and down along the Y axis direction, the movement of the hob head sliding plate 9 is driven by a servo motor and a lead screw structure, and the structure is a common technology on a machine tool, and therefore, the detailed description is not provided herein. The specific installation mode of the swing angle mechanism 10 is selected according to the situation.

As shown in fig. 7 and 8, the swing angle mechanism 10 includes a swing angle box 1001, a worm 1002, a worm wheel 1003, a handwheel 1004, a swing angle rotating main shaft 1005, a hob head coupling seat 1006, a main scale angle dial 1007, an auxiliary scale angle dial 1008 and an angle encoder 1009; the worm 1002 and the worm wheel 1003 are orthogonally arranged in a swing angle box 1001, and the outside of the swing angle box 1001 is provided with a hand wheel 1004 or a servo motor which is connected with the worm 1002 to drive the worm to rotate; the hob holder connecting seat 1006 is arranged on one side of the pendulum angle box 1001, the pendulum angle rotating main shaft 1005 fixedly penetrates through the worm wheel 1003, one end of the pendulum angle rotating main shaft is fixedly connected with the hob holder connecting seat 1006, and the main ruler angle dial 1007 and the auxiliary ruler angle dial 1008 are respectively arranged on the pendulum angle box 1001 and the hob holder connecting seat 1006; the other end of the swing angle rotating main shaft 1005 penetrates through the swing angle box 1001 and is fixedly connected with the angle encoder 1009 for feeding back the actual angle of the hob head 11 to the operator.

Example 4: the hob head 11 comprises a front support 1101, a hob bar 1102, a rear support 1103 and a hob driving motor 1104, wherein the front support 1101 and the rear support 1103 are installed on a guide rail at the front end of the tilt angle mechanism 10, the hob bar 1102 is installed between the front support 1101 and the rear support 1103, and the hob bar 1102 can be provided with a hob 1105, a forming milling cutter, a finger milling cutter, a hobbing cutter and other cutters; the hob driving motor 1104 is connected to the front support 1101 and drives the hob 1102 and the hob 1105 thereon to rotate by driving a main shaft in the front support 1101; when the hob 1105, a forming mill, a finger mill, or a turning cutter is mounted on the cutter bar 1102, due to the length difference of different cutters, the axial space of the cutter bar 1102 is filled up by adding the cutter pads 1106 with different thicknesses at the two ends of the cutter bar 1102.

Example 5: in addition to embodiments 1 to 4, as shown in fig. 2, a tail auxiliary mechanism 3 may be provided on the upper portion of the bed 1, the tail auxiliary mechanism 3 may be provided on the right end of the upper portion of the bed 1 coaxially opposite to the spindle 2, and the tail auxiliary mechanism 3 may be moved on the bed 1 along a W-axis direction parallel to the Z-axis direction by a driving mechanism, so that the workpiece 12 may be supported to improve cutting rigidity. The structure in which the tail auxiliary mechanism 3W is driven to move on the bed 1 in the axial direction is a servo motor and lead screw structure, which is a common technology in a machine tool and therefore is not described in detail herein. Specifically, the tail auxiliary mechanism 3 includes a sub-spindle 31 or a tailstock 32; the auxiliary main shaft 31 rotates to form a C2 revolving shaft; the tailstock 32 comprises a tailstock body 321 which is arranged on the lathe body 1 and moves along the W-axis direction, a sleeve 322 is arranged at the front end of the tailstock body 321, a centre 323 is arranged at the front end of the sleeve 322, and the centre 323 adopts a dead centre or a live centre.

Example 6: the workpiece bracket 7 comprises a bracket 701 and a guide sleeve 702, the bracket 701 is fixed on a saddle 4 and can move along with the saddle 4 along the Z-axis direction, the guide sleeve 702 is installed on the bracket 701 and is coaxial with the axis of the main shaft 2 so as to ensure the guiding precision and the supporting rigidity of the workpiece to be processed, and the guide sleeve 702 adopts a fixed guide sleeve or a rotary guide sleeve. The workpiece bracket 7 is driven by the saddle 4 to move in the Z-axis direction of the machine tool, and the workpiece 12 is guided and supported by the guide sleeve 702 on the workpiece bracket.

Example 7: the lathe bed 1 and the saddle 4 respectively adopt a flat lathe bed and a flat saddle, or the lathe bed 1 and the saddle 4 respectively adopt a flat lathe bed and an inclined saddle, or the lathe bed 1 and the saddle 4 respectively adopt an inclined lathe bed and a flat saddle.

The structures listed in the embodiment can be freely combined and installed, so that the combined type machining numerical control machine tool with different structural forms is formed, and the machining requirements of different gear parts are met.

The numerical control machine tool integrates linear moving shafts of an X shaft, a Y shaft, a Z shaft and a W shaft and rotating shafts of an A shaft, a B shaft, a C1 shaft and a C2 shaft, and the shafts independently move or are linked in a multi-shaft mode according to the machining forming principle of specific workpieces so as to complete the machining, gear hobbing, gear milling or gear turning of parts such as gears, synchronous belt wheels, chain wheels, worm wheels, worms and the like, so that the machining processes of the gear parts are integrated, and the machining processes are convenient to adjust.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The composite machining numerical control machine tool for machining the worm by the generating method comprises a tool body (1), wherein the tool body (1) is provided with an X-axis direction, a Y-axis direction and a Z-axis direction which are mutually perpendicular; the method is characterized in that: the automatic angle adjusting device is characterized in that a main shaft (2) is arranged on the upper portion of the lathe bed (1), the main shaft (2) is arranged at the left end of the upper portion of the lathe bed (1) and rotates to form a C1 rotating shaft, a saddle (4) moving along the Z-axis direction is arranged on an intermediate guide rail of the upper portion of the lathe bed (1), a workpiece bracket (7) guiding and supporting a workpiece (12) is arranged on the saddle (4), a middle sliding plate (5) moving along the X-axis direction is arranged on a guide rail of the saddle (4), a turning tool rest (6) and a rolling tool rest (11) are respectively arranged at two ends of the upper surface of the middle sliding plate (5), the turning tool rest (6) is arranged at one end, close to an operator, of the upper surface of the middle sliding plate (5) far away from the operator, a swing angle mechanism (10) is arranged at the position, used for fixing the rolling tool rest (11), the rotating shaft parallel to the X-axis direction on the swing angle mechanism (10) forms a rotating shaft A, the hob head (11) is arranged on a guide rail at the front end of the swing angle mechanism (10) and can move along the guide rail direction, and a cutter on the hob head (11) rotates to form a rotating shaft B.

2. The compound machining numerical control machine tool for generating machining worm according to claim 1, characterized in that: the turning tool rest (6) adopts a turret tool rest (61) or an arranged tool rest (62); the turret tool rest (61) is fixed on the upper surface of the middle sliding plate (5) through a tool rest base plate (611); the row-type tool rest (62) comprises a tool clamping plate (621) fixedly connected with the middle sliding plate (5), a plurality of tool holders (622) are arranged on the tool clamping plate (621), and tools (623) are fixed on the tool holders (622).

3. The compound machining numerical control machine tool for generating machining worm according to claim 2, characterized in that: the swing angle mechanism (10) is directly and fixedly connected with the upper surface of the middle sliding plate (5) through the box body; or a hob head sliding plate (9) is vertically arranged at the rear part of the swing angle mechanism (10), an upright post (8) is vertically and fixedly arranged on the upper surface of the middle sliding plate (5), a vertical guide rail for mounting the hob head sliding plate (9) is arranged on the front surface of the upright post (8), and the hob head sliding plate (9) is mounted on the vertical guide rail of the upright post (8) and can move up and down along the Y-axis direction.

4. The compound machining numerical control machine tool for generating machining worm according to claim 3, characterized in that: the hob head (11) comprises a front support (1101), a hob rod (1102), a rear support (1103) and a hob cutter driving motor (1104); the front support (1101) and the rear support (1103) are mounted on a guide rail at the front end of the swing angle mechanism (10), the cutter bar (1102) is mounted between the front support (1101) and the rear support (1103), and the cutter bar (1102) is provided with a hobbing cutter (1105) or a forming milling cutter, a finger milling cutter and a hobbing cutter; the hob driving motor (1104) is connected to the front support (1101) and drives the hob bar (1102) and a cutter on the hob bar to rotate by driving a main shaft in the front support (1101); when the hob (1105) or a forming milling cutter, a finger milling cutter and a gear turning cutter are installed on the cutter bar (1102), the axial space of the cutter bar (1102) is filled up by adding tool pads (1106) with different thicknesses at two ends of the cutter bar (1102) due to the length difference of different cutters.

5. The compound machining numerical control machine tool for generating machining worm according to claim 3, characterized in that: the swing angle mechanism (10) comprises a swing angle box body (1001), a worm (1002), a worm wheel (1003), a hand wheel (1004), a swing angle rotating main shaft (1005), a hob head connecting seat (1006), a main ruler angle dial (1007), an auxiliary ruler angle dial (1008) and an angle encoder (1009); the worm (1002) and the worm wheel (1003) are orthogonally arranged in a swing angle box body (1001), and the outside of the swing angle box body (1001) is arranged on a hand wheel (1004) or a servo motor which is connected with the worm (1002) and drives the worm to rotate; the hob holder connecting seat (1006) is arranged on one side of the pendulum angle box body (1001), the pendulum angle rotating main shaft (1005) fixedly penetrates through the worm gear (1003) and one end of the pendulum angle rotating main shaft is fixedly connected with the hob holder connecting seat (1006), and the main ruler angle dial (1007) and the auxiliary ruler angle dial (1008) are respectively arranged on the pendulum angle box body (1001) and the hob holder connecting seat (1006); the other end of the swing angle rotating main shaft (1005) penetrates through the swing angle box body (1001) and is fixedly connected with an angle encoder (1009) to feed back the actual angle of the hob head (11) to an operator.

6. The compound machining numerical control machine tool for generating machining worm according to claim 4 or 5, characterized in that: the upper part of the lathe bed (1) is provided with a tail auxiliary mechanism (3), the tail auxiliary mechanism (3) is coaxially opposite to the main shaft (2) and is arranged at the right end of the upper part of the lathe bed (1), and the tail auxiliary mechanism (3) can move on the lathe bed (1) along the W-axis direction parallel to the Z-axis direction through a driving structure; the tail auxiliary mechanism (3) comprises a secondary main shaft (31) or a tailstock (32); the auxiliary main shaft (31) rotates to form a C2 revolving shaft; the tailstock (32) comprises a tailstock body (321) arranged on the lathe body (1) and moving along the W-axis direction, a sleeve (322) is arranged at the front end of the tailstock body (321), a tip (323) is arranged at the front end of the sleeve (322), and the tip (323) is a dead tip or a live tip.

7. The compound machining numerical control machine tool for generating machining worm according to claim 6, characterized in that: the workpiece bracket (7) comprises a bracket (701) and a guide sleeve (702), the bracket (701) is fixed on a saddle (4) and can move along the Z-axis direction along with the saddle (4), the guide sleeve (702) is installed on the bracket (701) and is coaxial with the axis of the main shaft (2), and the guide sleeve (702) is a fixed guide sleeve or a rotary guide sleeve.

8. The compound machining numerical control machine tool for generating machining worm according to claim 7, characterized in that: the lathe bed (1) and the saddle (4) respectively adopt a flat lathe bed and a flat saddle, or the lathe bed (1) and the saddle (4) respectively adopt a flat lathe bed and an inclined saddle, or the lathe bed (1) and the saddle (4) respectively adopt an inclined lathe bed and a flat saddle.

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