Compound tool

Abstract

The utility model provides a compound tool. The compound tool comprises a tool apron, a first tool assembly and a second tool assembly. The tool apron is provided with a bearing rod; the first tool assembly comprises a first tool bar and at least one turning tool bit or boring tool bit, the turning tool bit or the boring tool bit is arranged at the end of the first tool bar, the first tool bar is connected with the bearing rod, and an included angle is formed between the first tool bar and the bearing rod; the second cutter comprises a second cutter bar and a hob head assembly, the hob head assembly is installed at the end of the second cutter bar, the second cutter bar is arranged on the bearing bar, and the second cutter bar and the first cutter bar are arranged in a spaced mode. According to the composite tool, the first tool assembly and the second tool assembly are arranged on the bearing rod of the same tool apron, and the first tool bar of the first tool assembly and the second tool bar of the second tool assembly are arranged in a spaced mode, so that continuous machining of the first tool assembly and the second tool assembly can be achieved, tools do not need to be replaced, and machining efficiency is improved. And the adjustment program and the cutter position re-determination after the cutter is replaced do not need to be considered.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting processing, in particular to a composite tool. Background Art

[0002] At present, in the production process of split hydraulic pliers, especially large-tonnage hydraulic pliers, the pliers body needs to go through boring, polishing, threading, and grooving processing, and the matching surface between the inner cavity of the pliers body and the piston has high requirements for accuracy and roughness. In order to ensure that the pliers body has high dimensional accuracy and low surface roughness, different types of tools need to be used in the entire processing process.

[0003] However, the existing lathes for processing large-tonnage split hydraulic pliers have fewer tool positions, generally only four tools are provided. Therefore, the tools need to be replaced frequently during the entire processing process, and each time the tools are replaced, the program needs to be adjusted and the tool position needs to be determined, which makes the processing time-consuming and labor-intensive, and seriously affects production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a composite tool to solve the technical problem of frequently replacing tools during processing. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a composite tool, which comprises:

[0007] A knife seat, wherein the knife seat is provided with a bearing rod;

[0008] 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;

[0009] 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.

[0010] The composite tool provided by the utility model has a first tool assembly and a second tool assembly arranged on a bearing rod of the same tool holder, and the first tool rod of the first tool assembly and the second tool rod of the second tool assembly are arranged at intervals, so that continuous processing of the first tool assembly and the second tool assembly can be realized without replacing the tool, and there is no need to consider the inconvenience caused by the adjustment procedure and re-determination of the tool position after replacing the tool to the processing process;

[0011] The composite tool provided by the utility model comprises a first tool assembly including a turning tool head or a boring tool head, and a second tool assembly including a hobbing tool head. Therefore, by adopting the composite tool provided by the utility model, turning and rolling processing of parts can be realized without replacing the tool, and boring and rolling processing of parts can also be realized without replacing the tool.

[0012] In some embodiments of the composite tool of the present invention, 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,

[0013] 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.

[0014] In some embodiments of the composite tool of the present invention, 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.

[0015] In some embodiments of the composite tool of the present invention, along the length direction of the carrying rod, the first tool assembly is installed at the carrying rod closer to the edge area of ​​the carrying rod, or the first tool assembly is arranged at one end of the carrying rod.

[0016] In some embodiments of the composite tool of the present invention, an extension direction of the first tool rod is consistent with an extension direction of the second tool rod.

[0017] In some embodiments of the composite tool of the present invention, 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.

[0018] In some embodiments of the composite tool of the present invention, 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 area, and the projection of the cutting edge portion of the hob head in the hob head assembly is within a second circular area, and the first circular area and the second circular area are adjacent or spaced apart.

[0019] In some embodiments of the composite tool of the present invention, 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 bearing rod, and the hob head assembly is installed in the second area.

[0020] In some embodiments of the composite tool of the present invention, the hob cutter head assembly includes a first tool seat and at least one hob cutter head, the first tool 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.

[0021] In some embodiments of the composite tool of the present invention, the hob head is detachably mounted on the first tool seat.

[0022] In some embodiments of the composite tool of the present invention, the mounting cavity of the first tool holder is suitable for mounting boring heads of different sizes.

[0023] In some embodiments of the composite tool of the present invention, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The assembly diagram of the composite tool of the utility model is schematically shown;

[0026] Figure 2 The exploded view of the first tool assembly of the composite tool of the utility model is schematically shown, wherein a turning tool head is mounted on the first tool bar;

[0027] Figure 3 An exploded view of a first tool assembly of the composite tool of the utility model is schematically shown, wherein a boring head is mounted on the first tool bar;

[0028] Figure 4 The exploded view of the second tool assembly of the composite tool of the present invention is schematically shown;

[0029] Figure 5 The exploded view of the boring head assembly of the composite tool of the utility model is schematically shown;

[0030] Figure 6 The rough turning tool head of the composite tool of the utility model is schematically shown to perform rough machining on the inner cavity of the hydraulic pliers;

[0031] Figure 7The utility model schematically shows the finishing of the inner cavity of the hydraulic pliers by the finishing turning tool head of the composite tool;

[0032] Figure 8 The utility model schematically shows the rolling process of the inner cavity of the hydraulic pliers by the boring head of the composite tool.

[0033] Description of reference numerals:

[0034] 100. Composite tool;

[0035] 110, knife seat; 111, bearing rod;

[0036] 120, first tool assembly; 121, first tool bar; 1211, installation position; 122, turning tool head; 1221, rough turning tool head; 1222, fine turning tool head; 123, boring tool head; 1231, rough boring tool head; 1232, fine boring tool head;

[0037] 130, second tool assembly; 131, second tool bar; 1311, first area; 1312, second area; 1313, spacing groove; 132, hob head assembly; 1321, first tool holder; 1322, mounting cavity; 1323, hob head;

[0038] 200. Clamp body. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0040] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] The composite tool of the present invention is described in detail below in conjunction with the accompanying drawings. It should be noted that the accompanying drawings and embodiments are only used to explain the composite tool of the present invention and cannot be understood as limiting the present invention.

[0043] Figure 1 The assembly diagram of the composite tool of the utility model is schematically shown; Figure 1 As shown, the composite tool 100 of the present invention 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 bearing rod 111 .

[0044] The first tool assembly 120 includes a first tool bar 121 and at least one turning tool head 122 or boring tool head 123 . The turning tool head 122 or boring tool head 123 is disposed at the end of the first tool bar 121 . The first tool bar 121 is connected to the bearing bar 111 and is disposed at an angle to the bearing bar 111 .

[0045] The second tool includes a second cutter bar 131 and a hob cutter head assembly 132 . The hob cutter head assembly 132 is mounted on the end of the second cutter bar 131 . The second cutter bar 131 is disposed on the bearing bar 111 and is spaced apart from the first cutter bar 121 .

[0046] The composite tool 100 in this embodiment is provided with a first tool assembly 120 and a second tool assembly 130 on the tool support rod 111, and the first tool assembly 120 and the second tool assembly 130 are suitable for different processing techniques and can meet the needs of continuous processing between two different processes, thereby solving the problem of fewer tool positions on the lathe and the problem of needing to adjust the program and re-position the tools when replacing them between different processing techniques.

[0047] More specifically, when a turning head 122 is provided in the first tool assembly 120 and a hob head assembly 132 is provided in the second tool assembly 130, connection processing of the two processes of turning and rolling can be realized; when a boring head 123 is provided in the first tool assembly 120 and a hob head assembly 132 is provided in the second tool assembly 130, continuous processing of the two processes of boring and rolling can be realized; therefore, the composite tool 100 of the present invention can continuously process between multiple different processes, meet the processing requirements of complex parts, and improve production efficiency.

[0048] The composite tool of the present invention is suitable for processing the pliers body of large-tonnage split hydraulic pliers. Since the precision requirements of the matching surfaces between the pliers body and the piston are high, and the roughness requirements are also high, the entire processing process requires multiple processing techniques, including boring, polishing, turning, etc., and the lathe has fewer tool positions. Therefore, the tool needs to be replaced during the processing, but each time the tool is replaced, the program needs to be readjusted and the tool position needs to be re-determined, which causes time and labor in the production process and seriously affects work efficiency. However, the composite tool provided by the present invention can solve the above problems well. The tool needs to be replaced between two different processing techniques, thereby improving production efficiency and making the entire processing process more convenient.

[0049] Figure 2 The exploded view of the first tool assembly of the composite tool of the present invention is schematically shown. Figure 2 As shown, the turning tool head 122 of the composite tool 100 includes a rough turning tool head 1221 and a fine turning tool head 1222 . The rough turning tool head 1221 and the fine turning tool head 1222 are respectively arranged at two ends of the first tool rod 121 and installed on the same side of the first tool rod 121 .

[0050] The first tool assembly 120 in this embodiment can use a rough turning tool head 1221 for rough machining and a fine turning tool head 1222 for fine machining. By adjusting the direction of the first tool rod 121 of the first tool assembly 120, the requirements of both machining processes can be met. The rough machining process and the fine machining process are described in detail below.

[0051] During the machining process, the length center line of the first tool rod 121 and the X-axis and Y-axis perpendicular to its length center line are used as the tool feed. During the rough machining process, the workpiece rotates forward, and the support rod 111 and the tool holder 110 carry the rough turning tool head 1221 to move along the negative direction of the X-axis, approaching the workpiece to be cut. After reaching the corresponding position, the support rod 111 carries the rough turning tool head to move along the positive direction of the Y-axis to cut the inner wall or outer wall of the groove of the workpiece.

[0052] During the rough machining process, forward machining is adopted. The tool cuts into the material and the material particles are arranged toward the cutting edge, making it easy to cut. Therefore, it is a relatively efficient machining method.

[0053] When finishing, the workpiece is reversed, and the bearing rod 111 carries the finishing tool head 1222 to move along the negative direction of the Y axis, so that the finishing tool head 1222 cuts the inner wall or outer wall of the groove. In the finishing process, the reverse processing is adopted, the tool cuts into the material, the material particles are arranged in reverse, the cutting form is not easy to be stable, and the processing efficiency will be reduced accordingly.

[0054] Figure 3The exploded view of the first tool assembly of the composite tool of the utility model is schematically shown, wherein a boring head is mounted on the first tool bar; Figure 3 As shown, in one embodiment of the utility model, the boring head 123 of the first tool assembly 120 includes a rough boring head 1231 and a fine boring head 1232, and the rough boring head 1231 and the fine boring head 1232 are respectively arranged at both ends of the first tool rod 121. The rough boring head 1231123 and the fine boring head 1232 are arranged in the first tool assembly 120, and the inner hole of the pliers body can be rough bored and fine bored.

[0055] In one embodiment of the utility model, the fine turning tool head 1222 and the hob cutter head assembly 132 are located on the same side of the support rod 111; or, the fine boring tool head 1232 and the hob cutter head assembly 132 are located on the same side of the support rod 111. Such an arrangement can realize rolling processing of parts such as the pliers body after the turning process, or rolling processing of parts such as the pliers body after the fine boring process.

[0056] In one embodiment of the utility model, along the length direction of the load-bearing rod 111, the first tool assembly 120 is closer to the edge area of ​​the load-bearing rod 111 at the installation position 1211 of the load-bearing rod 111, or the first tool assembly 120 is arranged at one end of the load-bearing rod 111. In the actual processing process, turning and boring are required first. Setting the first tool assembly 120 at the edge area of ​​the load-bearing rod 111 or one end of the load-bearing rod 111 can make it easier for the first tool assembly 120 to contact with components such as the pliers body, and both rough processing and fine processing are relatively easy. After the turning and boring processes, rolling processing can be performed.

[0057] According to the specific structure of the parts, after the turning or boring process is completed and before the rolling process, the first tool assembly 120 can be disassembled from the bearing rod 111 to reduce the interference between the first tool assembly 120 and the parts. Since the first tool assembly 120 and the hob head assembly 132 are installed on the same bearing rod 111, disassembling the first tool assembly from the bearing rod 111 will not affect the subsequent rolling process.

[0058] In order to better connect the turning and boring processes with the rolling process, the extension direction of the first tool rod 121 can be consistent with the extension direction of the second tool rod 131, so that the same component can be turned or bored and continuously processed with the rolling process without readjusting the direction of the tool holder 110, thereby improving processing efficiency.

[0059] In one embodiment of the utility model, a plurality of mounting positions 1211 are provided on the first tool rod 121 along the length direction of the first tool rod 121, and the first tool assembly 120 is installed on the supporting rod 111 through any mounting position 1211. The composite tool 100 in this embodiment has a plurality of mounting positions 1211 provided on the first tool rod 121, which is conducive to adjusting the relative position between the first tool rod 121 and the supporting rod 111, so that the distance between the turning head 122 and the boring head 123 provided on the first tool rod 121 and the supporting rod 111 can be adjusted according to actual needs.

[0060] like Figure 2 and Figure 3 As shown, the side of the first tool rod 121 is connected to the supporting rod 111 through a fastener, that is, the side of the first tool rod 121 has continuous and multiple installation positions 1211, and the turning head 122 and the boring head 123 between the first tool rod 121 and the supporting rod 111 can be adjusted arbitrarily according to the needs of the processing technology, and the distance of extending the supporting rod 111 can be adjusted.

[0061] The advantage of such a configuration is that, without adjusting the tool holder 110, only the relative position of the first tool rod 121 and the load-bearing rod 111 needs to be adjusted to process components with different apertures; furthermore, it is also possible to avoid one end of the first tool rod 121 extending too far from the load-bearing rod 111, thereby preventing interference between the turning tool head 122 or the boring tool head 123 and the component during rolling processing.

[0062] In one embodiment of the utility model, in a plane perpendicular to the supporting rod 111, with the center line of the supporting rod 111 as the center of the circle, the projection of the cutting edge portion of the turning head 122 or the cutting edge portion of the boring head 123 is within a first annular region, and the projection of the cutting edge portion of the boring head 123 in the hob head assembly 132 is within a second annular region, and the first annular region and the second annular region are adjacent or spaced apart.

[0063] In this embodiment, for some parts, turning or boring processing and continuous processing between rolling processes can be achieved. In the composite tool 100 provided in this embodiment, the cutting edge portion of the turning head 122 in the first tool assembly 120 and the cutting edge portion of the hob head 1323 extend out of the supporting member by different lengths, and the cutting edge portion of the boring head 123 in the first tool assembly 120 and the cutting edge portion of the hob head 1323 extend out of the supporting member by different lengths, thereby achieving continuous processing under the condition of disassembling the first tool assembly 120.

[0064] Figure 4 The exploded view of the second tool assembly 130 of the composite tool 100 of the present invention is schematically shown. Figure 3As shown, the second tool rod 131 of the second tool assembly 130 is provided with a first area 1311 and a second area 1312, a spacing groove 1313 is provided between the first area 1311 and the second area 1312, the first area 1311 is connected to the supporting rod 111, and the hob head assembly 132 is installed in the second area 1312.

[0065] The composite tool 100 in this embodiment is provided with a spacing groove 1313 on the second tool rod 131, which can reduce the conduction of vibration between the first area 1311 and the second area 1312, so that after the hob head assembly 132 comes into contact with the component and performs processing, the impact on the bearing rod 111 and the tool holder 110 is reduced. The spacing groove 1313 can absorb part of the energy generated by the vibration. At the same time, during the rolling process, it can also reduce the impact of the vibration on the tool holder 110 or the bearing rod 111 on the processing of the hob head assembly 132.

[0066] It should be noted that the spacing groove 1313 on the second cutter bar 131 is arranged between the first area 1311 and the second area 1312 of the second cutter bar 131, and the first area 1311 and the second area 1312 are only partially connected. The spacing groove 1313 isolates most of the area between the first area 1311 used to connect the supporting rod 111 and the second area 1312 used to install the hob head assembly 132.

[0067] Figure 5 The exploded view of the boring head 123 assembly of the composite tool 100 of the present invention is schematically shown. Figure 4 and Figure 5 In the composite tool 100 of this embodiment, the hob head assembly 132 includes a first tool seat 1321110 and at least one hob head 1323. The first tool seat 1321110 is provided with a mounting cavity 1322. The hob head 1323 is rotatably mounted in the mounting cavity 1322, and a partial area of ​​the hob head 1323 extends out of the mounting cavity 1322.

[0068] The composite tool 100 in this embodiment is provided with a separate hob cutter head assembly 132 connected to the second cutter rod 131 , so as to realize a modular design and facilitate the separate replacement of the hob cutter head assembly 132 .

[0069] The hob cutter head 1323 is rotatably mounted in the mounting cavity 1322 of the first cutter seat 1321110, and a portion of the hob cutter head 1323 extends out of the mounting cavity 1322, which portion is a cutting edge portion, and is used to contact with parts for rolling processing. While implementing the rolling processing, the mounting cavity 1322 of the first cutter seat 1321 can also protect the rest of the hob cutter head 1323; when the hob cutter head assembly 132 is removed from the second cutter rod 131, it is convenient to store and protect the entire hob cutter head assembly 132.

[0070] In one embodiment of the utility model, the hob cutter head 1323 is detachably mounted on the first tool holder 1321110. The composite tool 100 in this embodiment can be provided with different hob cutter heads 1323 in the mounting cavity 1322 of the first tool holder 1321110. Different hob cutter heads 1323 can be arranged in the same mounting cavity 1322 according to the requirements of the processing technology, thereby improving the applicability of the hob cutter head assembly 132.

[0071] Among them, the roller cutter heads 1323 of different sizes can be installed in the installation cavity 1322 of the same first cutter seat 1321110, that is, when the roller cutter head 1323 of different sizes needs to be replaced, the first cutter seat 1321110 and the matching related parts can still continue to be used.

[0072] When the hob cutter head 1323 needs to be replaced with a new one, the first cutter seat 1321110 in the hob cutter head assembly 132 and the components matching the first cutter seat 1321110 can still be used. Therefore, the composite tool 100 in this embodiment has stronger applicability.

[0073] In one embodiment of the present invention, the first tool assembly 120 and the carrying rod 111 are connected in a detachable manner, and the second tool assembly 130 and the carrying rod 111 are connected in a detachable manner; Figure 1 , Figure 2 and Figure 3 It can be clearly seen that the first tool assembly 120 and the second tool assembly 130 are both connected to the carrying rod 111 in a detachable manner.

[0074] Among them, a fastener is used to press the first tool rod 121 or the second tool rod 131 onto the load-bearing rod 111, the fastener and the load-bearing rod 111 are connected by a thread, and a receiving groove is provided on the load-bearing rod 111. One end of the fastener presses the first tool rod 121 or the second tool rod 131 into the receiving groove to fix the first tool assembly 120 or the second tool assembly 130. This connection method has the advantages of reliable connection, easy disassembly and easy adjustment of the relative position relationship between the first tool rod 121 and the load-bearing rod 111 and between the second tool rod 131 and the load-bearing rod 111.

[0075] Figure 6 The schematic diagram shows the rough machining of the inner cavity of the hydraulic pliers by the rough turning tool head 1221 of the composite tool 100 of the present invention. Figure 7 The schematic diagram shows the finishing process of the inner cavity of the hydraulic pliers by the finishing tool head 1222 of the composite tool 100 of the present invention. Figure 8 The schematic diagram shows the rolling process of the boring head 123 of the composite tool 100 of the present invention on the inner cavity of the hydraulic pliers. Figure 6 , Figure 7 and Figure 8 As shown, the process steps for processing the pliers body 200 are given, and the relative position of the composite tool 100 of the present utility model in the pliers body 200 is also given.

[0076] like Figure 6 As shown, the first tool assembly 120 of the composite tool 100 of the present invention is first used to perform rough machining on the inner hole of the caliper body 200, wherein the rough boring tool head 1231123 is arranged at one end of the first tool rod 121; Figure 7 As shown, the inner hole of the pliers body 200 is finely processed, wherein the fine boring head 1232 in the first tool assembly 120 is used, and the fine boring head 1232 is arranged at the other end of the first tool rod 121; when the boring process is completed, the first tool assembly 120 is removed from the carrier, and the inner hole of the pliers body 200 is rolled using the hob head assembly 132 on the carrier rod 111.

[0077] In summary, the composite tool 100 of the present invention has a first tool assembly 120 and a second tool assembly 130 disposed on the support rod 111 of the tool holder 110, which meets the requirements of various processing techniques for parts, greatly improves production efficiency, and also improves the utilization rate of the lathe.

[0078] The composite tool 100 of the utility model is also suitable for processing the sealing groove of the O-ring, realizing the continuous processing of the grooving cutter and the rolling process, and can also process the outer circle, realizing the continuous processing of the outer circle turning and the rolling process.

[0079] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on 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, wherein 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 to 3, characterized in that: Along the length direction of the carrying bar, the first tool assembly is closer to the edge area of ​​the carrying bar at the installation position of the carrying bar, or the first tool assembly is arranged at one end of the carrying bar.

5. The composite tool according to claim 4, characterized in that: An extending direction of the first knife bar is consistent with an extending direction of the second knife bar.

6. The composite tool according to claim 4, characterized in that: Along the length direction of the first knife bar, a plurality of installation positions are arranged on the first knife bar, and the first knife assembly is installed on the bearing bar through any installation position.

7. The composite tool according to claim 4, 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 of the turning head or the cutting edge of the boring head is within a first circular area, and the projection of the cutting edge of the hob head in the hob head assembly is within a second circular area, and the first circular area and the second circular area are adjacent or spaced apart.

8. The composite tool according to claim 4, characterized in that: The second cutter bar 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 bearing bar, and the hob cutter head assembly is installed in the second area.

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

10. The composite tool according to claim 9, characterized in that: The hob cutter head is detachably mounted on the first cutter 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 cutter heads of different sizes.

12. The composite tool according to claim 1, characterized in that: The first tool assembly is detachably connected to the carrying bar; and / or the second tool assembly is detachably connected to the carrying bar.

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