CN216632604U

CN216632604U - Copying lathe

Info

Publication number: CN216632604U
Application number: CN202123439350.2U
Authority: CN
Inventors: 施国炜
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a profiling lathe, which relates to the technical field of mechanical equipment and comprises a rack, a clamp assembly, a turning tool frame assembly and a shaping assembly, wherein the clamp assembly and the turning tool frame assembly are erected on the rack, the clamp assembly comprises a chuck mechanism and a tailstock mechanism for clamping and fixing a workpiece to be machined, the shaping assembly comprises a positioning tool mechanism and a shaping mold mechanism, the positioning tool mechanism is arranged on the turning tool frame assembly, the shaping mold mechanism is arranged on the tailstock mechanism, the clamp assembly clamps the workpiece to be machined and drives the workpiece to rotate, and the turning tool rest component can perform horizontal transverse and horizontal longitudinal feeding according to the outline of the shaping die mechanism so as to turn the circumferential outline of a workpiece to be machined, according to the utility model, the technical problems that the roundness cannot be ensured and the machining efficiency is low when a lathe machines spherical products in the prior art are solved.

Description

Copying lathe

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to a copying lathe.

Background

With the development of society, various handicraft articles such as wooden shashlik or linden playing are more popular, collectors want to make the handicraft articles by themselves, but for some handicraft articles with complicated shapes, such as a ball-shaped structure, for example, Buddha beads, steel balls or gourd-shaped products, the processing tools are limited, most collectors often use electric hand drills, hand rubs and other tools, and even directly polish the handicraft articles by using sand paper step by step, but the roundness is insufficient, the processing conditions are limited, time and labor are wasted, and the efficiency is extremely low. In addition, although large-scale processing plants can process such artware, the structure is complex, the occupied area is large, the cost is extremely high, and the large-scale processing plants are not suitable for personal use.

Therefore, how to solve the technical problems that the roundness cannot be ensured and the machining efficiency is low when a lathe machines spherical products in the prior art becomes an important technical problem to be solved by the personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a copying lathe, which solves the technical problems that the roundness cannot be ensured and the machining efficiency is low when the lathe machines spherical products in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a profiling lathe which comprises a rack, a clamp assembly, a turning tool frame assembly and a shaping assembly, wherein the clamp assembly and the turning tool frame assembly are both erected on the rack, the clamp assembly comprises a chuck mechanism and a tailstock mechanism which are used for clamping and fixing a workpiece to be machined, the shaping assembly comprises a positioning cutter mechanism and a shaping mold mechanism, the positioning cutter mechanism is arranged on the turning tool frame assembly, the shaping mold mechanism is arranged on the tailstock mechanism, the clamp assembly clamps the workpiece to be machined and drives the workpiece to rotate, and the turning tool frame assembly can perform horizontal transverse and horizontal longitudinal feeding according to the outline of the shaping mold mechanism so as to machine the circumferential outline of the workpiece to be machined.

Furthermore, the shaping mold mechanism comprises a mold with a shaping surface, and the mold is detachably connected with the tailstock mechanism.

Furthermore, the positioning cutter mechanism comprises a positioning cutter body and a positioning cutter frame, the positioning cutter frame is used for erecting the positioning cutter body on the turning tool frame assembly, the positioning cutter body extends out of the positioning cutter frame and faces the shaping mold mechanism, and the positioning cutter body can be used for adjusting the horizontal, transverse and longitudinal positions of the turning tool frame assembly.

Furthermore, a longitudinal position adjusting mechanism for adjusting the longitudinal position between the positioning cutter body and the shaping mold mechanism is arranged between the positioning cutter body and the positioning cutter frame, and a transverse position adjusting mechanism for adjusting the transverse position between the positioning cutter body and the shaping mold mechanism is arranged between the positioning cutter frame and the cutting cutter frame assembly.

Furthermore, the longitudinal position adjusting mechanism and the transverse position adjusting mechanism both comprise positioning holes, adjusting holes and fasteners, the adjusting holes are strip-shaped holes or a plurality of round holes arranged in parallel along the corresponding adjusting direction, and the fasteners penetrate through the corresponding adjusting holes and then are detachably fastened and connected with the positioning holes.

Further, the lathe tool rest assembly comprises a cutting mechanism, a transverse driving assembly and a longitudinal driving assembly, the transverse driving assembly is used for driving the cutting mechanism to perform horizontal transverse motion, the longitudinal driving assembly is used for driving the cutting mechanism to perform horizontal longitudinal motion, the transverse driving assembly is arranged below the cutting mechanism along the length direction of the rack, the longitudinal driving assembly is erected in the width direction of the rack between the chuck mechanism and the tailstock mechanism, and the transverse driving assembly can drive the longitudinal driving assembly to perform transverse motion.

Further, cutting mechanism includes support body and lathe tool, the lathe tool rest is established on the support body, and the front end of lathe tool outwards stretches out and orientation treat that the machined part sets up.

Further, the transverse driving assembly comprises a slide carriage and a first guide rail, the first guide rail is arranged along the length direction of the rack, and the slide carriage is arranged on the first guide rail and transversely moves along the first guide rail.

Further, the longitudinal driving assembly comprises a second guide rail and a third guide rail, the second guide rail is used for enabling the cutting mechanism to horizontally and longitudinally move, the third guide rail is arranged along the length direction of the rack, the second guide rail is erected along the width direction of the rack, one end of the second guide rail is connected with the slide carriage box, the other end of the second guide rail extends out and is erected on the third guide rail, and the slide carriage box can drive the second guide rail to horizontally and transversely slide along the third guide rail.

Further, the lathe tool frame assembly further comprises a holding part, wherein the holding part is arranged on the cutting mechanism and close to the position of the positioning tool mechanism.

Compared with the prior art, the utility model has the following beneficial effects:

the profiling lathe provided by the utility model is characterized in that the lathe device is additionally provided with the shaping component, the clamp component can clamp and drive the workpiece to be machined to perform rotary motion, the turning tool frame component is fixed on the tailstock mechanism in the process of cutting the workpiece to be machined, the shaping die mechanism can perform horizontal transverse and longitudinal positioning reference on the movement of the positioning tool mechanism, and further can perform horizontal transverse and longitudinal feeding limit reference on the turning tool frame component which moves synchronously with the shaping die mechanism, namely the turning tool frame component can perform feeding cutting on the surface of the workpiece to be machined according to the outer contour shape of the shaping die mechanism, for example, the outer contour shape of the shaping die mechanism can be circular or wavy, the turning tool frame component can perform feeding cutting on the rotary workpiece to be machined according to the shape of the turning tool frame component, and the workpiece to be machined can be machined into a standard three-dimensional spherical or gourd-shaped workpiece, the machining precision is high, and the roundness of processing product is changeed and is obtained guaranteeing, and moreover, the lathe tool frame subassembly uses the design subassembly to be spacing reference when carrying out the cutting feed cutting man-hour, and processing is more smooth and easy, can greatly improve machining efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall configuration of a profiling lathe provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a sizing assembly provided in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a longitudinal position adjustment mechanism provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a mold provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a transverse drive assembly provided by an embodiment of the present invention;

fig. 6 is a schematic position diagram of the second rail and the third rail provided in the embodiment of the present invention.

Figure 1-rack; 2-a clamp assembly; 3-turning tool holder assembly; 4-a shaping component; 5-a chuck mechanism; 6-tailstock mechanism; 7-positioning a cutter mechanism; 8-shaping mould mechanism; 9-processing a workpiece to be processed; 10-a mould; 11-a fixed profile; 12-positioning the cutter body; 13-positioning the tool post; 14-longitudinal position adjustment mechanism; 15-a lateral position adjustment mechanism; 16-positioning holes; 17-a conditioning aperture; 18-a fastener; 19-a cutting mechanism; 20-a transverse drive assembly; 21-longitudinal driving assembly; 22-a frame body; 23-turning tool; 24-a slide box; 25-a first guide rail; 26-a second guide rail; 27-a third guide rail; 28-a holding part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The utility model aims to provide a copying lathe, which solves the technical problems that the roundness cannot be ensured and the machining efficiency is low when the lathe machines spherical products in the prior art.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the utility model described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the utility model described in the claims.

The technical solution of the present invention will be described in detail with reference to specific examples.

Example 1:

referring to fig. 1-2, the copying lathe provided by this embodiment includes a frame 1, a fixture assembly 2, a lathe tool rest assembly 3 and a shaping assembly 4, wherein, the fixture assembly 2 and the lathe tool rest assembly 3 are all erected on the frame 1, the fixture assembly 2 includes a chuck mechanism 5 and a tailstock mechanism 6 for chucking and fixing a workpiece 9 to be processed, the chuck mechanism 5 can include a chuck and a spindle box for driving the chuck to rotate, the tailstock mechanism 6 is arranged opposite to the chuck mechanism 5, the tailstock mechanism 6 can be close to or far away from the chuck mechanism 5 along a track on the frame 1 to act together with the chuck mechanism 5, so as to realize positioning, clamping and dismounting of the workpiece 9 to be processed. The shaping assembly 4 comprises a positioning cutter mechanism 7 and a shaping mold mechanism 8, and the positioning cutter mechanism 7 is arranged on the turning tool frame assembly 3 and moves synchronously with the turning tool frame assembly 3. The shaping mold mechanism 8 is arranged on the tailstock mechanism 6 and used for enabling the positioning cutter mechanism 7 to be in butt contact with the tailstock mechanism, and further limiting the position of the feeding of the turning tool holder assembly 3 through the positioning cutter mechanism 7. The fixture component 2 clamps the workpiece 9 to be machined and drives the workpiece to be machined to rotate, and the turning tool rest component 3 can feed in the horizontal transverse direction and the horizontal longitudinal direction according to the outline of the shaping mold mechanism 8 so as to machine the circumferential outline of the workpiece 9 to be machined, so that the utility model is arranged, the shaping mold mechanism 8 is fixed on the tailstock mechanism 6 by adding the shaping component 4 on the lathe device, the fixture component 2 can clamp and drive the workpiece 9 to be machined to rotate, the turning tool rest component 3 can carry out cutting machining on the workpiece 9 to be machined, the horizontal transverse direction and the longitudinal direction of the turning tool rest component 3 which moves synchronously with the shaping mold mechanism 8 can be subjected to cutting limit reference by carrying out horizontal transverse direction and longitudinal direction positioning reference on the movement of the positioning tool mechanism 7, namely, the turning tool rest component 3 can feed the surface of the workpiece 9 to be machined according to the outline shape of the shaping mold mechanism 8, for example, the outline shape of the shaping mold mechanism 8 can be circular or wavy, the turning tool holder assembly 3 can feed and cut the revolving workpiece 9 to be machined according to the shape of the turning tool holder assembly, the workpiece 9 to be machined can be machined into a standard three-dimensional spherical or gourd-shaped shape, the machining precision is high, and the roundness of a machined product is easier to ensure, moreover, the turning tool holder assembly 3 uses the shaping assembly 4 as a limiting reference during the feeding and cutting machining, the machining is smoother, the machining efficiency can be greatly improved, and the technical problems that the roundness cannot be ensured and the machining efficiency is low in the process of machining spherical products by using a lathe in the prior art are solved.

The chuck mechanism 5 and the tailstock mechanism 6 can be provided with apexes, and the end parts of the apexes can be provided with grooves for better clamping and positioning the workpiece 9 to be machined.

Example 2:

referring to fig. 1 to 4, in the present embodiment, the structure of the copying machine is further defined in addition to embodiment 1. The shaping mold mechanism 8 comprises a mold 10 with a shaping surface 11, the mold 10 and the tailstock mechanism 6 are detachably connected, the connection can be but not limited to bolt connection, threaded connection, clamping connection or bonding, and optionally, the mold 10 can be but not limited to a cylindrical structure, the arc-shaped side surface of the mold is the shaping surface 11, the cross-sectional profile of the shaping surface 11 can be but not limited to a standard circle, an arc or a wave, the shape of the shaping surface 11 can be set according to the processing requirements of products, the setting is carried out, the mold 10 and the tailstock mechanism 6 are detachably connected, the mold 10 can be conveniently replaced correspondingly according to the processing requirements of the products, and the use is more convenient.

As an optional implementation manner of the embodiment of the present invention, the positioning tool mechanism 7 includes a positioning tool body 12 and a positioning tool rest 13, and the positioning tool rest 13 mounts the positioning tool body 12 on the turning tool frame assembly 3, so that the positioning tool body 12 can move synchronously with the turning tool frame assembly 3. The positioning blade body 12 extends beyond the positioning blade carrier 13 and is disposed toward the shaping mold mechanism 8 so as to bring the head of the positioning blade body 12 into abutting contact with the shaping mold mechanism 8, and the positioning blade body 12 can be adjusted in horizontal lateral and longitudinal positions with respect to the blade carrier assembly 3 so that, after replacement with a mold 10 of a different type and size, the position of the positioning blade body 12 can be adjusted accordingly so as to bring the positioning blade body 12 into abutting contact with the entire range of the shaping surface 11.

Further, a longitudinal position adjusting mechanism 14 is arranged between the positioning cutter body 12 and the positioning cutter frame 13, the longitudinal position between the positioning cutter body 12 and the cutter frame assembly 3 can be adjusted by adjusting the longitudinal position adjusting mechanism 14, so that the positioning cutter body 12 can obtain different extending lengths, and the longitudinal position adjusting mechanism 14 is arranged between the positioning cutter body 12 and the positioning cutter frame 13, so that the position of the positioning cutter body 12 can be adjusted more accurately. And be provided with horizontal position adjustment mechanism 15 between positioning tool rest 13 and the turning tool rest subassembly 3, through adjusting horizontal position adjustment mechanism 15, can adjust the horizontal position between positioning tool body 12 and the turning tool rest subassembly 3 to make turning tool rest subassembly 3 treat the in-process that the machined part 9 was processed, positioning tool body 12 can fully contact with the design face 11 of mould 10, it is more convenient to adjust the use, horizontal position adjustment mechanism 15 sets up between positioning tool rest 13 and turning tool rest subassembly 3, can obtain bigger horizontal adjustment range.

Further, longitudinal position adjustment mechanism 14 and horizontal position adjustment mechanism 15 all include locating hole 16, regulation hole 17 and fastener 18, regulation hole 17 is for the bar hole or the round hole that a plurality of side by side set up that set up along corresponding regulation direction, fastener 18 runs through behind the corresponding regulation hole 17 and carries out detachable fastening connection with locating hole 16, its connection can be but not limited to for threaded connection, bonding or joint, so set up, the user only need adjust and loosen fastener 18, adjust the relative position of two parts that it connects, and after making fastener 18 aim at the different positions of regulation hole 17, lock fastening once more, can carry out the relative position regulation between two parts to its connection.

Specifically, the positioning blade carrier 13 may be a right-angled folded plate-shaped structure, for the longitudinal position adjusting mechanism 14, the positioning hole 16 may be opened on the longitudinal folded edge of the positioning blade carrier 13, the adjusting hole 17 may be opened on the positioning blade body 12, the fastening member 18 may be, but is not limited to, a bolt, after the fastening member 18 penetrates through the adjusting hole 17 on the positioning blade body 12, the fastening member 18 is in threaded connection with the positioning hole 16 on the longitudinal folded edge of the positioning blade carrier 13, so as to fasten the positioning blade carrier 13 and the positioning blade body 12, the fastening member 18 is unscrewed, the relative positions of the positioning blade body 12 and the positioning blade carrier 13 are moved, and the fastening member 18 is screwed again, so that the positioning blade body 12 and the positioning blade carrier 13 can be fastened, and the adjustment and the use are convenient. Similarly, for the transverse position adjusting mechanism 15, one of the positioning holes 16 and the adjusting holes 17 can be opened on the transverse folding edge of the positioning knife rest 13, the other one is opened on the knife rest component 3, the fastener 18 penetrates through the adjusting holes 17 and then is in threaded fastening connection with the positioning holes 16, and the adjustment and the use are more convenient.

Referring to fig. 1 and 5-6, as an alternative embodiment of the present invention, the carriage assembly 3 includes a cutting mechanism 19, a transverse driving assembly 20, and a longitudinal driving assembly 21, wherein the transverse driving assembly 20 is configured to drive the cutting mechanism 19 to perform a horizontal transverse movement, thereby adjusting a transverse feeding movement of the cutting mechanism 19. The longitudinal driving assembly 21 is used for driving the cutting mechanism 19 to perform horizontal longitudinal movement, thereby adjusting the longitudinal feeding movement of the cutting mechanism 19. The transverse driving component 20 is arranged below the cutting mechanism 19 along the length direction of the rack 1, the longitudinal driving component 21 is erected between the chuck mechanism 5 and the tailstock mechanism 6 along the width direction of the rack 1, the transverse driving component 20 can drive the longitudinal driving component 21 to move transversely, and therefore the transverse driving component 20 can drive the cutting mechanism 19 to move transversely through self reciprocating motion along the length direction of the rack 1, and the longitudinal driving component 21 can move together with the transverse driving component 20 to convert the cutting mechanism 19 into longitudinal motion from transverse motion at any time, and the motion continuity of the cutting mechanism 19 is guaranteed.

Further, cutting mechanism 19 includes support body 22 and lathe tool 23, and lathe tool 23 erects on support body 22 to the front end of lathe tool 23 outwards stretches out and treats that machined part 9 sets up towards, and support body 22 can be the square tool rest structure, is used for erectting the fastening to lathe tool 23, reduces it and rocks, and lathe tool 23 front end outwards stretches out more can be convenient for treat the profile of machined part 9 and carries out car processing, convenient operation.

Further, the transverse driving assembly 20 includes a slide carriage box 24 and a first guide rail 25, the first guide rail 25 is disposed along the length direction of the rack 1, the slide carriage box 24 is disposed on the first guide rail 25 and transversely moves along the first guide rail 25, wherein the first guide rail 25 may be a screw nut structure, a screw of the first guide rail 25 is erected along the length direction of the rack 1, a nut of the first guide rail 25 is sleeved on the screw and may be connected with the slide carriage box 24, the slide carriage box 24 may have a hand rotating wheel thereon, a driving force source of the transverse driving assembly 20 may be a user manually rotates the hand rotating wheel to perform manual feeding, or one end of the screw is connected with a feeding box to perform hydraulic or electric driving, a transmission principle of the slide carriage box 24 and the first guide rail 25 in the transverse driving assembly 20 is similar to a transmission principle of a lathe in the prior art, and will not be described herein again.

Further, the longitudinal driving assembly 21 includes a second rail 26 and a third rail 27, the second rail 26 may be, but not limited to, a dovetail-shaped strip rail-shaped structure, the lower end of the frame 22 of the cutting mechanism 19 is provided with a groove structure matched with the second rail 26, and the frame 22 of the cutting mechanism 19 is pushed to enable the cutting mechanism 19 to perform horizontal and longitudinal movement along the second rail 26 as a whole. The third guide rail 27 is disposed along the length direction of the machine frame 1 for the second guide rail 26 to horizontally and laterally move, wherein the third rail may be but not limited to a rod-shaped structure, a sliding block connected with the second guide rail 26 is movably sleeved on the third rail, and during the movement of the second guide rail 26 along with the slide carriage 24, the sliding block also correspondingly moves on the rod to support the second guide rail 26. The second guide rail 26 is erected along the width direction of the rack 1, one end of the second guide rail 26 is connected with the slide carriage box 24, the other end of the second guide rail 26 extends out and is erected on the third guide rail 27, the slide carriage box 24 can drive the second guide rail 26 to horizontally and transversely slide along the third guide rail 27, namely, the second guide rail 26 can move synchronously along with the slide carriage box 24, the third guide rail 27 can be slidably connected with the end part of the second guide rail 26, and the guide supporting effect can be achieved on the movement of the second guide rail 26.

As an optional implementation manner of the embodiment of the present invention, the carriage assembly 3 further includes a holding portion 28, the holding portion 28 is disposed on the cutting mechanism 19 and is disposed near the position where the cutter mechanism 7 is located, and the holding portion 28 can be held by a user, so that the user can push or pull back the cutting mechanism 19 more conveniently, and the feeding and retracting amplitude can be controlled better.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A copying lathe is characterized by comprising a rack (1), a clamp assembly (2), a lathe saddle assembly (3) and a shaping assembly (4), wherein the clamp assembly (2) and the lathe saddle assembly (3) are erected on the rack (1), the clamp assembly (2) comprises a chuck mechanism (5) and a tailstock mechanism (6) which are used for clamping and fixing a workpiece to be machined (9), the shaping assembly (4) comprises a positioning cutter mechanism (7) and a shaping mold mechanism (8), the positioning cutter mechanism (7) is arranged on the lathe saddle assembly (3), the shaping mold mechanism (8) is arranged on the tailstock mechanism (6), the clamp assembly (2) clamps the workpiece to be machined (9) and drives the workpiece to rotate in a rotating manner, and the lathe saddle assembly (3) can perform horizontal transverse and horizontal longitudinal tool feeding according to the outline of the shaping mold mechanism (8), so as to carry out the machining on the circumferential profile of the workpiece (9) to be machined.

2. The copying lathe according to claim 1, characterised in that the shaped die means (8) comprise a die (10) having a shaped surface (11), the die (10) being removably connected to the tailstock means (6).

3. The copying lathe according to claim 1, characterized in that the positioning cutter mechanism (7) comprises a positioning cutter body (12) and a positioning cutter holder (13), the positioning cutter holder (13) mounts the positioning cutter body (12) on the lathe tool holder assembly (3), the positioning cutter body (12) extends out of the positioning cutter holder (13) and is disposed toward the sizing die mechanism (8), and the positioning cutter body (12) can be adjusted in horizontal lateral and longitudinal positions with respect to the lathe tool holder assembly (3).

4. The copying lathe according to claim 3, characterized in that a longitudinal position adjusting mechanism (14) for adjusting the longitudinal position between the positioning cutter body (12) and the shaping mold mechanism (8) is provided between the positioning cutter body (12) and the positioning cutter holder (13), and a lateral position adjusting mechanism (15) for adjusting the lateral position between the positioning cutter body (12) and the shaping mold mechanism (8) is provided between the positioning cutter holder (13) and the cutter holder assembly (3).

5. The copying lathe according to claim 4, characterized in that the longitudinal position adjusting mechanism (14) and the transverse position adjusting mechanism (15) each comprise a positioning hole (16), an adjusting hole (17) and a fastening piece (18), the adjusting hole (17) is a strip-shaped hole or a plurality of round holes arranged in parallel along the corresponding adjusting direction, and the fastening piece (18) penetrates through the corresponding adjusting hole (17) and then is detachably fastened and connected with the positioning hole (16).

6. The copying lathe according to claim 1, characterized in that the lathe tool frame assembly (3) comprises a cutting mechanism (19), a transverse driving assembly (20) for driving the cutting mechanism (19) to perform horizontal transverse movement, and a longitudinal driving assembly (21) for driving the cutting mechanism (19) to perform horizontal longitudinal movement, the transverse driving assembly (20) is arranged below the cutting mechanism (19) along the length direction of the frame (1), the longitudinal driving assembly (21) is erected between the chuck mechanism (5) and the tailstock mechanism (6) along the width direction of the frame (1), and the transverse driving assembly (20) can drive the longitudinal driving assembly (21) to perform transverse movement.

7. The copying lathe according to claim 6, characterised in that the cutting mechanism (19) comprises a frame (22) and a turning tool (23), the turning tool (23) being mounted on the frame (22) and the front end of the turning tool (23) projecting outwards and being arranged towards the piece (9) to be machined.

8. The profiling lathe according to claim 6, characterized in that said transverse drive assembly (20) comprises a carriage (24) and a first guide rail (25), said first guide rail (25) being arranged along the length of said machine frame (1), said carriage (24) being arranged on said first guide rail (25) and being movable transversely along said first guide rail (25).

9. The copying lathe of claim 8, characterized in that the longitudinal driving assembly (21) comprises a second guide rail (26) for horizontal longitudinal movement of the cutting mechanism (19) and a third guide rail (27) for horizontal transverse movement of the second guide rail (26), the third guide rail (27) is arranged along the length direction of the machine frame (1), the second guide rail (26) is erected along the width direction of the machine frame (1), one end of the second guide rail (26) is connected with the carriage (24), the other end of the second guide rail is erected on the third guide rail (27), and the carriage (24) can drive the second guide rail (26) to horizontally slide along the third guide rail (27).

10. The profiling lathe according to claim 6, characterized in that said tool holder assembly (3) further comprises a holding portion (28), said holding portion (28) being provided on said cutting mechanism (19) and being arranged close to said positioning tool mechanism (7).