CN222520525U

CN222520525U - A composite tool

Info

Publication number: CN222520525U
Application number: CN202421181789.0U
Authority: CN
Inventors: 崔海利; 任文红; 姚慧
Original assignee: Tianze Electric Power Tianjin Co ltd
Current assignee: Tianze Electric Power Tianjin Co ltd
Priority date: 2024-05-28
Filing date: 2024-05-28
Publication date: 2025-02-25
Anticipated expiration: 2034-05-28

Abstract

The utility model provides a composite cutter which comprises a cutter holder, a first cutter component and a second cutter component, wherein the cutter holder is provided with a bearing rod, the first cutter component comprises a first cutter bar and at least one turning cutter head or boring cutter head, the turning cutter head or boring cutter head is arranged at the end part of the first cutter bar, the first cutter bar is connected with the bearing rod and is arranged at an included angle with the bearing rod, the second cutter comprises a second cutter bar and a cutter head component, the cutter head component is arranged at the end part of the second cutter bar, and the second cutter bar is arranged on the bearing rod and is arranged at an interval with the first cutter bar. According to the composite cutter provided by the utility model, the first cutter component and the second cutter component are arranged on the bearing rod of the same cutter holder, and the first cutter bar of the first cutter component and the second cutter bar of the second cutter component are arranged at intervals, so that continuous processing of the first cutter component and the second cutter component can be realized without replacing the cutter, and an adjusting program after replacing the cutter and re-determining the cutter position are not needed.

Description

Composite cutter

Technical Field

The utility model relates to the technical field of cutting machining, in particular to a composite cutter.

Background

At present, in the process of producing split hydraulic pliers, particularly large-tonnage hydraulic pliers, the pliers body is required to be subjected to boring, polishing, threading and grooving processing, and the matching surface between the inner cavity of the pliers body and the piston has higher precision requirement and roughness requirement, so that the pliers body has higher dimensional precision and lower surface roughness, and different types of cutters are required to be used in the whole processing process.

However, the existing lathe for machining the large-tonnage split hydraulic pliers is few in cutter positions, and is generally only provided with four cutters, so that the cutters need to be replaced frequently in the whole machining process, and the cutter positions need to be adjusted and determined each time, so that time and labor are wasted in the machining process, and the production efficiency is seriously affected.

Disclosure of utility model

The utility model aims to provide a composite cutter to solve the technical problem that the cutter is frequently replaced in the machining process. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a composite cutter, which comprises:

the tool apron is provided with a bearing rod;

The first cutter component comprises a first cutter bar and at least one turning tool bit or boring tool bit, wherein the turning tool bit or boring tool bit is arranged at the end part of the first cutter bar, and the first cutter bar is connected with the bearing rod and is arranged at an included angle with the bearing rod;

The second cutter assembly comprises a second cutter bar and a cutter head assembly, the cutter head assembly is mounted at the end part of the second cutter bar, and the second cutter bar is arranged on the bearing bar and is arranged at intervals with the first cutter bar.

According to the composite cutter provided by the utility model, the first cutter component and the second cutter component are arranged on the bearing rod of the same cutter holder, and the first cutter bar of the first cutter component and the second cutter bar of the second cutter component are arranged at intervals, so that continuous processing of the first cutter component and the second cutter component can be realized without replacing the cutter, and inconvenience brought to the processing process by the adjustment procedure after replacing the cutter and redetermining the cutter position is not required to be considered;

the first cutter component comprises a turning cutter head or a boring cutter head, and the second cutter component comprises a rolling cutter head, so that the composite cutter provided by the utility model can realize turning and rolling of parts without replacing the cutter, and can realize boring and rolling of parts without replacing the cutter.

In some embodiments of the composite tool of the utility model, the tool bit comprises a rough turning tool bit and a finish turning tool bit, which are respectively arranged at two ends of the first tool bar and are arranged on the same side surface of the first tool bar, or,

The boring tool bit comprises a rough boring tool bit and a finish boring tool bit, and the rough boring tool bit and the finish boring tool bit are respectively arranged at two ends of the first cutter bar.

In some embodiments of the compound tool of the utility model, the fine turning tool bit is on the same side of the carrier bar as the hob head assembly, or the fine boring tool bit is on the same side of the carrier bar as the hob head assembly.

In some embodiments of the composite tool of the utility model, the first tool assembly is located closer to an edge region of the carrier bar in the installed position of the carrier bar along the length of the carrier bar, or the first tool assembly is located at one end of the carrier bar.

In some embodiments of the composite tool of the utility model, the direction of extension of the first tool bar coincides with the direction of extension of the second tool bar.

In some embodiments of the composite tool of the utility model, a plurality of mounting locations are provided on the first tool bar along the length of the first tool bar, the first tool assembly being mounted to the carrier bar by any one of the mounting locations.

In some embodiments of the composite tool of the utility model, in a plane perpendicular to the carrier bar, the projection of the cutting edge of the turning bit or the cutting edge of the boring bit is in a first annular region, the projection of the cutting edge of the rolling bit in the hob head assembly is in a second annular region, the first annular region and the second annular region being adjacent or spaced apart.

In some embodiments of the composite tool of the utility model, the second tool bar has a first region and a second region, a spacer slot is disposed between the first region and the second region, the first region is connected to the carrier bar, and the hob head assembly is mounted to the second region.

In some embodiments of the composite tool of the utility model, the hob head assembly comprises a first hob head and at least one hob head, the first hob head being provided with a mounting cavity, the hob head being rotatably mounted to the mounting cavity, and a partial area of the hob head protruding from the mounting cavity.

In some embodiments of the compound tool of the utility model, the hob head is detachably mounted to the first tool holder.

In some embodiments of the compound tool of the utility model, the mounting cavity of the first tool holder is adapted to mount boring heads of different sizes.

In some embodiments of the composite tool of the utility model, the first tool assembly is removably coupled to the carrier bar and/or the second tool assembly is removably coupled to the carrier bar.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 schematically shows an assembly view of a composite tool of the present utility model;

FIG. 2 schematically illustrates an exploded view of a first tool assembly of the compound tool of the utility model with a turning head mounted on a first tool shank;

FIG. 3 schematically illustrates an exploded view of a first tool assembly of the compound tool of the utility model with a boring head mounted on a first tool bar;

FIG. 4 schematically illustrates an exploded view of a second cutter assembly of the compound cutter of the present utility model;

FIG. 5 schematically illustrates an exploded view of the boring head assembly of the compound tool of the utility model;

FIG. 6 schematically illustrates roughing of the internal cavity of a hydraulic clamp by the rough turning bit of the compound cutter of the present utility model;

FIG. 7 schematically illustrates the finish machining of the inner cavity of a hydraulic clamp by the finish turning bit of the compound tool of the present utility model;

fig. 8 schematically illustrates the rolling of the boring head of the compound tool of the utility model against the inner cavity of a hydraulic clamp.

Reference numerals illustrate:

100. A composite cutter;

110. A knife holder 111, a carrier bar;

120. First cutter component, 121, first cutter bar, 1211, mounting position, 122, lathe tool, 1221, rough turning tool, 1222, finish turning tool, 123, boring tool, 1231, rough boring tool, 1232, finish boring tool;

130. The second cutter component, 131, a second cutter bar, 1311, a first area, 1312, a second area, 1313, a spacing groove, 132, a hob head component, 1321, a first cutter holder, 1322, a mounting cavity, 1323 and a hob head;

200. A clamp body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

In the description of the present utility model, it should be noted that unless otherwise indicated, the terms "plurality of" means two or more, "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc. are merely for convenience of description and for simplicity of description, and do not necessarily indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, 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 utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediary. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The present utility model will be described in detail with reference to the accompanying drawings, wherein the drawings and examples are for the purpose of illustrating the present utility model only and are not to be construed as limiting the utility model.

Fig. 1 schematically shows an assembly of the composite tool of the utility model, as shown in fig. 1, the composite tool 100 of the utility model comprises a tool holder 110, a first tool assembly 120 and a second tool assembly 130, wherein the tool holder 110 is provided with a carrier rod 111.

The first cutter assembly 120 comprises a first cutter bar 121 and at least one turning or boring cutter head 122, 123, wherein the turning or boring cutter head 122, 123 is arranged at the end of the first cutter bar 121, and the first cutter bar 121 is connected with the carrier bar 111 and is arranged at an included angle with the carrier bar 111.

The second cutter comprises a second cutter bar 131 and a cutter head assembly 132, the cutter head assembly 132 is mounted at the end of the second cutter bar 131, and the second cutter bar 131 is arranged on the bearing rod 111 and is arranged at intervals with the first cutter bar 121.

In the composite tool 100 of the present embodiment, the first tool component 120 and the second tool component 130 are disposed on the bearing rod 111 of the tool, and the first tool component 120 and the second tool component 130 are suitable for different processing technologies, so that continuous processing between two different technologies can be satisfied, the problem of less tool positions on a lathe is solved, and meanwhile, the problem that an adjustment program is required for changing the tool between different processing technologies, and the problem of in-place redetermination is also solved.

More specifically, when the turning tool bit 122 is arranged in the first tool assembly 120 and the rolling tool bit 132 is arranged in the second tool assembly 130, the connection processing of two processes of turning and rolling can be realized, and when the boring tool bit 123 is arranged in the first tool assembly 120 and the rolling tool bit 132 is arranged in the second tool assembly 130, the continuous processing of two processes of boring and rolling can be realized, so that the composite tool 100 of the utility model can continuously process among a plurality of different processes, meets the processing requirements of complex parts, and improves the production efficiency.

The composite cutter is suitable for processing the cutter body of the large-tonnage split hydraulic cutter, and because the precision requirement of the mating surface of the cutter body and the piston is higher, and meanwhile, the requirement on roughness is higher, a plurality of processing technologies including boring, polishing, turning and the like are needed in the whole processing process, and the cutter positions of a lathe are fewer, so that the cutter is needed to be replaced in the processing process, but the cutter is needed to be readjusted every time, and the cutter positions are determined again, so that time and labor are wasted in the production process, and the working efficiency is seriously affected.

Fig. 2 schematically illustrates an exploded view of a first cutter assembly of the composite cutter of the present utility model, and as illustrated in fig. 2, the turning tool bit 122 of the composite cutter 100 includes a rough turning tool bit 1221 and a finish turning tool bit 1222, the rough turning tool bit 1221 and the finish turning tool bit 1222 being disposed at both ends of the first cutter bar 121, respectively, and being mounted to the same side of the first cutter bar 121.

The first cutter assembly 120 in this embodiment can adopt the rough turning tool bit 1221 for rough machining, adopts the finish turning tool bit 1222 for finish machining, and can meet the requirements of two kinds of machining by adjusting the direction of the first cutter bar 121 of the first cutter assembly 120, and the rough machining process and the finish machining process are described in detail below.

In the machining process, the length center line of the first cutter bar 121 and the X axis and the Y axis which are perpendicular to the length center line of the first cutter bar 121 are used as cutter feeding, a machined part rotates positively in the rough machining process, the cutter holder 110 of the bearing rod 111 carries a rough turning cutter head 1221 to move along the X axis in the negative direction and approach to the machined part, and after the corresponding position is reached, the bearing rod 111 carries the rough cutter head to move along the Y axis in the positive direction to cut the inner wall or the outer wall of a groove of the machined part.

In the course of rough machining, forward rotation machining is adopted, a cutter cuts into materials, and material particles are arranged towards a cutting edge, so that the rough machining is easy to cut, and therefore, the rough machining is a machining mode with high efficiency.

When finishing, the workpiece is reversed, and the carrier 111 carries the finishing head 1222 in the negative Y-axis direction, so that the finishing head 1222 cuts the inner wall or the outer wall of the groove. In the finish machining process, reverse machining is adopted, a cutter cuts into materials, material particles are reversely arranged, the cutting form is not easy to stabilize, and the machining efficiency is correspondingly reduced.

Fig. 3 schematically illustrates an exploded view of a first tool assembly of the compound tool of the present utility model, wherein a boring bit is mounted on a first tool bar, and in one embodiment of the present utility model, the boring bit 123 of the first tool assembly 120 comprises a rough boring bit 1231 and a finish boring bit 1232, wherein the rough boring bit 1231 and the finish boring bit 1232 are respectively disposed at two ends of the first tool bar 121, and the rough boring bit 1231123 and the finish boring bit 1232 are disposed in the first tool assembly 120, so that the rough boring and the finish boring of an inner hole of a clamp body can be performed.

In one embodiment of the present utility model, the finish turning tool bit 1222 and the hob head assembly 132 are located on the same side of the carrier 111, or the finish boring tool bit 1232 and the hob head assembly 132 are located on the same side of the carrier 111, so that the rolling machining of the parts such as the pliers body after the turning process or the rolling machining of the parts such as the pliers body after the finish boring process can be realized.

In one embodiment of the present utility model, the first cutter assembly 120 is located closer to the edge area of the carrier 111 at the mounting position 1211 of the carrier 111 along the length direction of the carrier 111, or the first cutter assembly 120 is located at one end of the carrier 111, so that during the actual machining process, turning and boring needs to be performed first, and the first cutter assembly 120 is located at the edge area of the carrier 111 or one end of the carrier 111, so that the first cutter assembly 120 can be more easily contacted with parts such as a clamp body, thus making it easier to perform rough machining or finish machining, and after the turning and boring processes, rolling machining can be performed again.

Depending on the specific configuration of the component, after the turning or boring process is completed, the first cutter assembly 120 may be removed from the carrier bar 111 prior to the rolling process to reduce interference between the first cutter assembly 120 and the component. Since the first cutter assembly 120 and the hob head assembly 132 are mounted on the same carrier bar 111, the first cutter set price is detached from the carrier bar 111 without affecting the subsequent rolling process.

In order to better connect the turning and boring process and the rolling process, the extending direction of the first cutter bar 121 and the extending direction of the second cutter bar 131 can be consistent, so that the turning or boring process and the rolling process can be continuously performed on the same part, the direction of the cutter holder 110 is not required to be readjusted, and the processing efficiency is provided.

In one embodiment of the present utility model, along the length direction of the first cutter bar 121, a plurality of mounting positions 1211 are provided on the first cutter bar 121, and the first cutter assembly 120 is mounted on the carrier bar 111 through any one of the mounting positions 1211, so that the composite cutter 100 in this embodiment, the first cutter bar 121 is provided with the plurality of mounting positions 1211, which is beneficial for adjusting the relative position between the first cutter bar 121 and the carrier bar 111, so that the distance between the turning tool bit 122 and the boring tool bit 123 provided on the first cutter bar 121 extending out of the carrier bar 111 can be according to actual needs.

As shown in fig. 2 and 3, the side surface of the first cutter bar 121 is connected with the bearing rod 111 through a fastener, that is, the side surface of the first cutter bar 121 has a plurality of continuous mounting positions 1211, and the first cutter bar 121 and the bearing rod 111 can be adjusted by any distance from the whole cutter head 122 to the boring cutter head 123 according to the requirement of the machining process.

The arrangement has the advantages that under the condition that the tool apron 110 is not adjusted, parts with different apertures can be processed by only adjusting the relative positions of the first cutter bar 121 and the bearing rod 111, and the situation that interference occurs between the turning tool bit 122 or the boring tool bit 123 and the parts during rolling processing due to the fact that one end of the first cutter bar 121 extends out of the bearing rod 111 too far can be avoided.

In one embodiment of the utility model, in a plane perpendicular to the carrier bar 111, the projection of the cutting edge of the turning bit 122 or the cutting edge of the boring bit 123 is in a first annular region, and the projection of the cutting edge of the boring bit 123 in the hob head assembly 132 is in a second annular region, adjacent to or spaced apart from the first annular region, centered about the centerline of the carrier bar 111.

In this embodiment, for some parts, the turning or boring process and the continuous process between the rolling process may be implemented, and in the composite tool 100 provided in this embodiment, the length of the carrier extending from the cutting edge portion of the cutter head 122 and the cutting edge portion of the hob head 1323 in the first tool assembly 120 is different, and the length of the carrier extending from the cutting edge portion of the boring tool head 123 and the cutting edge portion of the hob head 1323 in the first tool assembly 120 is different, so that the continuous process may be implemented under the condition of disassembling the first tool assembly 120.

Fig. 4 schematically illustrates an exploded view of the second cutter assembly 130 of the compound cutter 100 of the present utility model, as shown in fig. 3, the second cutter bar 131 of the second cutter assembly 130 is provided with a first region 1311 and a second region 1312, a spacer slot 1313 is provided between the first region 1311 and the second region 1312, the first region 1311 is connected to the carrier bar 111, and the hob head assembly 132 is mounted to the second region 1312.

In the composite cutter 100 of the present embodiment, the spacing groove 1313 is disposed on the second cutter bar 131, so that the conduction of the vibration between the first area 1311 and the second area 1312 can be reduced, the influence on the carrier bar 111 and the cutter holder 110 in the process of machining after the cutter head assembly 132 contacts with the parts is reduced, the spacing groove 1313 can absorb part of the energy generated by the vibration, and meanwhile, in the process of rolling, the influence on the machining of the cutter head assembly 132 due to the vibration on the cutter holder 110 or the carrier bar 111 can be reduced.

The spacer groove 1313 provided in the second bar 131 is provided between the first region 1311 and the second region 1312 of the second bar 131, and the first region 1311 and the second region 1312 are only partially connected, and the spacer groove 1313 isolates the first region 1311 for connecting the carrier bar 111 from most of the region between the second region 1312 for mounting the hob head assembly 132.

Fig. 5 schematically illustrates an exploded view of the boring head 123 assembly of the compound tool 100 of the present utility model, and in combination with fig. 4 and 5, the compound tool 100 of this embodiment, the hob head assembly 132 includes a first hob 1321110 and at least one hob head 1323, the first hob 1321110 is provided with a mounting cavity 1322, the hob head 1323 is rotatably mounted to the mounting cavity 1322, and a partial region of the hob head 1323 extends out of the mounting cavity 1322.

In the composite cutter 100 in this embodiment, the hob head assembly 132 is separately provided to be connected with the second cutter bar 131, so that a modular design can be realized, and the hob head assembly 132 can be conveniently replaced separately.

The hob head 1323 is rotatably mounted in the mounting cavity 1322 of the first tool holder 1321110, and a partial area of the hob head 1323 extends out of the mounting cavity 1322, and the partial area is a cutting edge portion, and is used for contacting with a part to perform rolling processing. The mounting cavity 1322 of the first tool holder 1321 also protects the remainder of the hob head 1323 while allowing for a rolling operation, and facilitates storage and protection of the entire hob head assembly 132 after the hob head assembly 132 is removed from the second tool bar 131.

In an embodiment of the present utility model, the hob head 1323 is detachably mounted on the first tool holder 1321110, and in the composite tool 100 of this embodiment, different hob heads 1323 may be disposed in the mounting cavity 1322 of the first tool holder 1321110, and according to the requirements of the processing technology, different hob heads 1323 may be disposed in the same mounting cavity 1322, so as to improve the applicability of the hob head assembly 132.

The hob heads 1323 with different sizes can be mounted in the mounting cavity 1322 of the same first tool post 1321110, that is, when the hob heads 1323 with different sizes need to be replaced, the first tool post 1321110 and related components can still be used continuously.

When a new hob head 1323 needs to be replaced, the first tool holder 1321110 and the parts matching with the first tool holder 1321110 in the hob head assembly 132 can still be used continuously, so the composite tool 100 in the embodiment has a higher applicability.

In one embodiment of the present utility model, the first cutter assembly 120 is detachably connected to the carrier 111, the second cutter assembly 130 is detachably connected to the carrier 111, and as can be clearly seen in connection with fig. 1, 2 and 3, the first cutter assembly 120 and the second cutter assembly 130 are both detachably connected to the carrier 111.

The first cutter bar 121 or the second cutter bar 131 is pressed against the bearing rod 111 by a fastener, the fastener is in threaded connection with the bearing rod 111, a containing groove is formed in the bearing rod 111, one end of the fastener presses the first cutter bar 121 or the second cutter bar 131 against the containing groove to fix the first cutter assembly 120 or the second cutter assembly 130, and the connection mode has reliable connection, is convenient to detach and is convenient to adjust the relative position relationship between the first cutter bar 121 and the bearing rod 111 and between the second cutter bar 131 and the bearing rod 111.

Fig. 6 schematically illustrates rough machining of an inner cavity of a hydraulic clamp by a rough turning tool bit 1221 of the composite tool 100 of the present utility model, fig. 7 schematically illustrates finish machining of an inner cavity of a hydraulic clamp by a finish turning tool bit 1222 of the composite tool 100 of the present utility model, fig. 8 schematically illustrates rolling machining of an inner cavity of a hydraulic clamp by a boring tool bit 123 of the composite tool 100 of the present utility model, as shown in fig. 6, 7 and 8, and the process steps of machining a clamp body 200 are given, while also giving a relative position of the composite tool 100 of the present utility model within the clamp body 200.

As shown in fig. 6, the first cutter assembly 120 of the composite cutter 100 of the present utility model is used to roughing the inner hole of the pliers body 200, wherein the rough boring cutter 1231123 is disposed at one end of the first cutter bar 121, as shown in fig. 7, the inner hole of the pliers body 200 is finished, wherein the finish boring cutter 1232 of the first cutter assembly 120 is disposed at the other end of the first cutter bar 121, and after the boring process is completed, the first cutter assembly 120 is detached from the carrier, and the rolling process is performed on the inner hole of the pliers body 200 by using the hob head assembly 132 on the carrier 111.

In summary, according to the composite tool 100 of the present utility model, the first tool assembly 120 and the second tool assembly 130 are disposed on the carrier rod 111 of the tool apron 110, so as to meet the requirements of various processing on parts, greatly improve the production efficiency, and further improve the utilization rate of the lathe.

The utility model discloses a compound cutter 100 still is applicable to the seal groove of processing O type circle, realizes the continuous processing of grooving cutter and roll extrusion technology, can also process the excircle, realizes the continuous processing of turning excircle and roll extrusion technology.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A composite tool, characterized in that the composite tool comprises:

A knife seat, wherein the knife seat is provided with a bearing rod;

A first tool assembly, the first tool assembly comprising a first tool bar and at least one turning tool head or boring tool head, the turning tool head or boring tool head being arranged at an end of the first tool bar, the first tool bar being connected to the bearing bar and being arranged at an angle to the bearing bar;

The second tool assembly comprises a second tool rod and a roller cutter head assembly, wherein the roller cutter head assembly is mounted on the end of the second tool rod, and the second tool rod is arranged on the bearing rod and spaced apart from the first tool rod.

2. The composite tool according to claim 1, characterized in that the turning tool head comprises a rough turning tool head and a fine turning tool head, the rough turning tool head and the fine turning tool head are respectively arranged at two ends of the first tool rod and installed on the same side of the first tool rod; or,

The boring head comprises a rough boring head and a fine boring head, and the rough boring head and the fine boring head are respectively arranged at two ends of the first tool rod.

3. The composite tool according to claim 2, characterized in that the fine turning cutter head and the hob cutter head assembly are located on the same side of the bearing rod; or, the fine boring cutter head and the hob cutter head assembly are located on the same side of the bearing rod.

4. The composite tool according to any one of claims 1-3 is characterized in that, along the length direction of the supporting rod, the first tool assembly is installed at a position closer to the edge area of the supporting rod, or the first tool assembly is arranged at one end of the supporting rod.

5 . The composite tool according to claim 4 , wherein an extension direction of the first tool rod is consistent with an extension direction of the second tool rod.

6. The composite tool according to claim 4, characterized in that a plurality of mounting positions are provided on the first tool rod along the length direction of the first tool rod, and the first tool assembly is mounted on the bearing rod through any mounting position.

7. The composite tool according to claim 4 is characterized in that, in a plane perpendicular to the supporting rod, with the center line of the supporting rod as the center of the circle, the projection of the cutting edge portion of the turning head or the cutting edge portion of the boring head is within a first circular ring area, and the projection of the cutting edge portion of the hob head in the hob head assembly is within a second circular ring area, and the first circular ring area and the second circular ring area are adjacent or spaced apart.

8. The composite tool according to claim 4 is characterized in that the second tool rod is provided with a first area and a second area, a spacing groove is provided between the first area and the second area, the first area is connected to the supporting rod, and the hob head assembly is installed in the second area.

9. The composite tool according to claim 8 is characterized in that the hob cutter head assembly comprises a first cutter seat and at least one hob cutter head, the first cutter seat is provided with a mounting cavity, the hob cutter head is rotatably mounted in the mounting cavity, and a partial area of the hob cutter head extends out of the mounting cavity.

10 . The composite tool according to claim 9 , wherein the hob head is detachably mounted on the first tool seat.

11. The composite tool according to claim 10, characterized in that the mounting cavity of the first tool holder is suitable for mounting boring heads of different sizes.

12. The composite tool according to claim 1, characterized in that the first tool assembly and the carrying rod are connected in a detachable manner; and/or the second tool assembly and the carrying rod are connected in a detachable manner.