CN221473548U - Composite tools and machine tools - Google Patents

Abstract

The present application relates to a composite tool and a machine tool, wherein the tool comprises a shank, a tool rod, a distal blade and a proximal blade, the shank is fixedly connected to the tool rod, the distal blade and the proximal blade are respectively detachably fixed to the tool rod, the proximal blade is located between the distal blade and the shank, and the radius of the distal blade is smaller than the radius of the proximal blade. The present application arranges a distal blade and a distal blade on the same tool rod to perform different types of processing on bushing holes respectively, thereby reducing the number of tool changes and improving processing efficiency. At the same time, the composite tool of the present application also arranges a proximal blade and a distal blade to be detachably fixed to the tool rod respectively, so that the type of blade can be replaced and the distance between the proximal blade and the distal blade can be adjusted, so that the same composite tool can be suitable for processing bushing holes of different sizes, thereby improving the flexibility and versatility of the composite tool.

Description

Composite tools and machine tools

Technical Field

The present application relates to the field of machining tools, and in particular to a composite tool and a machine tool.

Background technique

At present, the rapid development of new energy vehicles has brought huge market prospects for the development of aluminum alloy materials. The lightweight chassis uses low-density aluminum alloy materials to reduce the weight of the body through die-casting. The cast aluminum longitudinal beam of the aluminum alloy front subframe has a bushing hole. The bushing hole is located at one end of the front side of the longitudinal beam of the front subframe and needs to be chamfered and end-faced. This process requires the use of multiple tools and multiple tool changes, resulting in a long processing time and low economic efficiency.

In order to solve the above problems, the prior art integrates multiple tools to save tool changes. However, the composite tool design of the prior art is too simple, and the same composite tool cannot adapt to the processing of bushing holes of different sizes. The flexibility is low, and a small size change may cause the entire tool to fail to meet the processing requirements, and then it can only be abandoned, causing waste.

Utility Model Content

In order to solve the above problems, the present application provides a composite tool. By optimizing the structure of the composite tool in a targeted manner, a composite tool with a replaceable tool holder and blade is designed to reduce the number of tool changes and improve processing efficiency. At the same time, the flexibility of the composite tool is also improved, so that the same composite tool can be used for processing bushing holes of different sizes, thereby improving the versatility of the composite tool. The specific solutions include the following:

In the first aspect, the present application provides a composite tool, including a handle, a tool rod, a distal blade and a proximal blade, the handle is fixedly connected to the tool rod, the distal blade and the proximal blade are respectively detachably fixed to the tool rod, the proximal blade is located between the distal blade and the handle, and the radius of the distal blade is smaller than the radius of the proximal blade.

The composite tool of the present application arranges a distal blade and a distal blade on the same tool bar to perform different degrees and types of processing on the bushing hole respectively. The proximal blade is arranged between the distal blade and the tool handle, and the radius of the distal blade is arranged to be smaller than the radius of the proximal blade, so that when the distal blade is controlled to feed in the primary processing of the bushing hole, the proximal blade follows closely and performs secondary processing synchronously, thereby reducing the number of tool changes and improving processing efficiency. For example, the distal blade can be used for rough boring of the inner hole of the bushing hole, and the proximal blade can be used for fine boring of the inner hole of the bushing hole or can be used for milling the end face of the bushing hole, and can also be used for processing chamfers, etc.

Furthermore, the composite tool of the present application is also provided with a proximal blade and a distal blade which are respectively detachably fixed to the tool rod, so that the type of blade can be replaced and the distance between the proximal blade and the distal blade can be adjusted, so that the same composite tool can be suitable for the processing of bushing holes of different sizes, thereby improving the flexibility and versatility of the composite tool.

In one embodiment, the composite tool includes a tool holder, which is detachably fixed to the tool rod, and the proximal blade and the distal blade are fixed to the tool holder.

In this embodiment, a blade holder detachably fixed to a blade rod is provided in the composite tool, and the proximal blade and the distal blade are fixed to the blade holder, so that the proximal blade and the distal blade can be detachably fixed to the blade rod and the reliability of the blade can be improved.

In one embodiment, the composite tool includes a tool holder, the tool holder is fixed to the tool rod, and the proximal blade and the distal blade are detachably fixed to the tool holder.

In this embodiment, a tool holder fixed to the tool rod is provided in the composite tool, and the proximal blade and the distal blade are detachably fixed to the tool holder, so that the proximal blade and the distal blade can be detachably fixed to the tool rod and the reliability of the tool rod can be improved.

In one embodiment, the knife seat is detachably fixed to the knife rod, there are two knife seats, and the proximal blade and the distal blade are respectively arranged on one knife seat.

In one embodiment, an adjusting washer is provided between the two tool seats. The adjusting washer is detachably mounted on the tool rod. Along the axial direction of the tool rod, two opposite end faces of the adjusting washer respectively abut against one tool seat.

In this embodiment, based on the fact that the tool holder can be detachably fixed to the tool rod, an adjusting washer is arranged between the two tool holders, and the two opposite end faces of the adjusting washer are respectively abutted against one tool holder, so as to define the relative position between the two tool holders. At the same time, the adjusting washer is detachably sleeved on the tool rod, so that the distance between the two tool holders, that is, the distance between the two blades, can be adjusted by replacing adjusting washers of different thicknesses or different numbers of adjusting washers, so as to facilitate the same composite tool to process bushing holes of different sizes.

In one embodiment, the knife seat is fixed to the knife rod, and the knife seat is provided with a plurality of mounting grooves along the axial direction of the knife rod, and the proximal blade and the distal blade can be selectively disposed in one of the mounting grooves respectively.

In this embodiment, based on the tool holder being fixed to the tool rod, a plurality of mounting grooves are arranged on the tool holder along the axial direction of the tool rod so that the proximal blade and the distal blade can be replaced in mounting grooves at different positions, thereby adjusting the distance between the two blades, so as to facilitate the same composite tool to process bushing holes of different sizes.

In one embodiment, the blade seat is disc-shaped, and the number of the proximal blades is multiple, and the multiple proximal blades are arranged along the circumference of the blade seat; and/or,

There are multiple distal blades, and the multiple distal blades are arranged along the circumference of the blade seat.

In this embodiment, the tool holder is provided in a disc shape, and a plurality of proximal blades and/or a plurality of distal blades are arranged along the circumference of the tool holder to improve the cutting efficiency of the composite tool.

In one embodiment, the tool holder is detachably fixed to the tool rod, and along the radial direction of the tool rod, one of the tool rod and the tool holder is provided with a convex limit block, and the other is provided with a limit groove, the limit block extends into the limit groove and abuts against the inner wall of the limit groove to limit the relative position between the tool holder and the tool rod.

In this embodiment, based on the fact that the tool holder can be detachably fixed to the tool rod, a limit block is set between the tool rod and the tool holder, and a limit groove is matched to limit the relative position between the two to prevent the tool holder from rotating relative to the tool rod and affecting the cutting effect.

In one embodiment, the composite tool further includes an intermediate blade, which is detachably fixed to the tool rod and located between the proximal blade and the distal blade, wherein the radius of the intermediate blade is smaller than the radius of the proximal blade and larger than the radius of the distal blade.

In this embodiment, by arranging an intermediate blade between the proximal blade and the distal blade, and making the radius of the intermediate blade smaller than the radius of the proximal blade and larger than the radius of the distal blade, the same composite tool can be used for three types of cutting processing, further improving the processing efficiency of the composite tool. For example, the distal blade can be used for rough boring of the inner hole of the bushing hole, the intermediate blade can be used for fine boring of the inner hole of the bushing hole, and the proximal blade can be used for milling the end face of the bushing hole or for processing chamfers.

In one embodiment, the blade edge of the proximal blade is perpendicular to the axial direction of the blade rod. The blade edge of the proximal blade is inclined relative to the axial direction of the blade rod.

In this embodiment, the proximal blade is configured to be a milling cutter by arranging the blade edge of the proximal blade to be perpendicular to the axial direction of the blade rod, so as to ensure the surface roughness of the end face of the bushing hole.

In one embodiment, the cutting edge of the proximal blade is inclined relative to the axial direction of the blade shaft.

In this embodiment, the proximal blade is configured to be a chamfering blade by setting the blade edge of the proximal blade to be inclined relative to the axial direction of the blade rod, so as to chamfer the end face of the bushing hole, thereby reducing stress concentration on the end face of the bushing hole.

In a second aspect, the present application provides a machine tool, comprising a bed and an electric composite tool as in any of the above embodiments, wherein the composite tool is movably connected to the bed and used for cutting a workpiece.

It can be understood that the machine tool provided in the second aspect of the present application, because it adopts the composite tool provided in the first aspect of the present application, also has all the beneficial effects that can be achieved in any embodiment provided in the first aspect of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is an exploded schematic diagram of a composite tool provided in an embodiment of the present application;

FIG2 is an exploded schematic diagram of a composite tool provided in another embodiment of the present application;

FIG3 is a schematic structural diagram of a knife holder provided in one embodiment of the present application from a side perspective;

FIG4 is a schematic structural diagram of a knife holder provided in an embodiment of the present application from another side perspective;

FIG5 is a schematic structural diagram of a first tool holder provided in an embodiment of the present application from a side perspective;

FIG6 is a schematic structural diagram of a first tool holder from another side perspective provided in an embodiment of the present application;

FIG7 is a schematic structural diagram of a second tool holder provided in an embodiment of the present application from a side perspective;

FIG. 8 is a schematic structural diagram of a second tool holder provided in an embodiment of the present application from another side perspective.

Figure numbers: 100-compound tool; 10-tool handle; 11-positioning boss; 20-tool rod; 21-thread; 22-nut; 30-blade; 31-proximal blade; 32-distal blade; 33-middle blade; 34-blade; 40-tool seat; 41-first tool seat; 411-positioning groove; 42-second tool seat; 43-mounting groove; 431-mounting surface; 432-slag discharge groove; 433-limiting surface; 434-process hole; 50-adjusting washer; 60-limiting block; 70-limiting groove.

Detailed ways

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, 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 a limitation to the present application.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including", "may include", "include", or "may include" used in this application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "including" or "include" indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

Please refer to FIG. 1 which is a schematic diagram of an exploded view of a composite tool 100 provided in one embodiment of the present application.

As shown in FIG1 , in one embodiment, the composite tool 100 of the present application includes a handle 10, a shank 20, and a blade 30. The handle 10 is fixedly connected to the shank 20, and the blade 30 includes a proximal blade 31 and a distal blade 32. The proximal blade 31 and the distal blade 32 are detachably fixed to the shank 20, respectively. At the same time, the proximal blade 31 is located between the distal blade 32 and the handle 10, and the radius of the distal blade 32 is smaller than the radius of the proximal blade 31. In the process of machining the bushing hole, as the control shank 20 extends into the bushing hole, the distal blade 32 first contacts the bushing hole and performs preliminary cutting on the inner hole of the bushing hole. When the shank 20 extends to a certain extent, the proximal blade 31 contacts the bushing hole for secondary cutting.

It can be understood that the composite tool 100 of the present application can perform different degrees and types of processing on the bushing hole by setting the distal blade 32 and the distal blade 32 on the same tool bar 20. By controlling the tool bar 20 to feed once, two degrees and two types of processing can be achieved, thereby reducing the number of tool changes and improving processing efficiency. For example, in one embodiment, the distal blade 32 can be used for rough boring of the inner hole of the bushing hole, and the proximal blade 31 can be used for fine boring of the inner hole of the bushing hole or can be used for milling the end face of the bushing hole, and can also be used for processing chamfers, etc.

Furthermore, the composite tool 100 of the present application is also provided with a proximal blade 31 and a distal blade 32 which are detachably fixed to the tool rod 20, so that the type of the blade 30 can be replaced and the distance between the proximal blade 31 and the distal blade 32 can be adjusted, so that the same composite tool 100 can be suitable for the processing of bushing holes of different sizes, so as to improve the flexibility and versatility of the composite tool 100.

In one embodiment, the tail taper of the tool handle 10 can be BT50, or can be changed to BT30 or BT40 as needed.

In the embodiment shown in FIG1 , the composite tool 100 further includes a knife seat 40, and the number of the knife seats 40 is two. The two knife seats 40 are respectively detachably fixed to the knife bar 20. For the convenience of introduction, the two knife seats 40 are respectively defined as a first knife seat 41 and a second knife seat 42. The first knife seat 41 is closer to the knife handle 10 than the second knife seat 42. The proximal blade 31 is fixed to the first knife seat 41, and the distal blade 32 is fixed to the second knife seat 42.

It can be understood that in this embodiment, by providing a blade seat 40 that can be detachably fixed to the blade rod 20 in the composite tool 100, and fixing the proximal blade 31 and the distal blade 32 to the blade seat 40, the proximal blade 31 and the distal blade 32 can be detachably fixed to the blade rod 20 while improving the reliability of the blade 30.

In one embodiment, a protruding positioning boss 11 is provided on the side of the knife handle 10 close to the distal blade 32, and a positioning groove 411 is provided on the side of the first knife seat 41 close to the knife handle 10. When the first knife seat 41 is installed, the first knife seat 41 is sleeved with the knife rod 20 and moves toward the knife handle 10, so that the positioning boss 11 of the knife handle 10 extends into the positioning groove 411 of the knife seat 40 and abuts against the inner wall of the positioning groove 411, thereby defining the relative position between the first knife seat 41 and the knife rod 20, preventing the first knife seat 41 from rotating relative to the knife rod 20, thereby providing reliability of the composite tool 100.

In one embodiment, the knife seat 40 is disc-shaped, and the disc-shaped knife seat 40 is sleeved on the outer surface of the knife rod 20. The matching accuracy between the knife seat 40 and the knife rod 20 is H7/g6.

In one embodiment, the end of the tool bar 20 away from the tool bar is provided with a thread 21, and the composite tool 100 includes a nut 22. After the first tool holder 41 and the second tool holder 42 are installed, the nut 22 is screwed into the tool bar 20 to prevent the tool holder 40 from being separated from the tool bar 20 along the axial direction of the tool bar 20.

It should be noted that, in the above-mentioned embodiment, the connection relationship between the knife seat 40 and the knife rod 20 is only introduced as an example, and does not represent the connection relationship between the knife seat 40 and the knife rod 20 in other embodiments of the present application, that is, the connection relationship between the knife seat 40 and the knife rod 20 can be adaptively adjusted according to the actual application scenario. For example, in one embodiment, the knife seat 40 can be fixed to the knife rod 20, and the proximal blade 31 and the distal blade 32 can be detachably fixed to the knife seat 40. It is also possible to replace the type of blade 30 and adjust the distance between the proximal blade 31 and the distal blade 32, so that the same composite tool 100 can be suitable for the processing of bushing holes of different sizes, so as to improve the flexibility and versatility of the composite tool 100. In another embodiment, the knife seat 40 can be detachably fixed to the knife rod 20, and the blade 30 can also be detachably fixed to the knife seat 40. It can be understood that when the knife holder 40 is detachably fixed to the knife rod 20 and the blade 30 is detachably fixed to the knife holder 40, the composite tool 100 of the present application has a wider range of versatility and higher flexibility, compared to when one of the knife holder 40 and the blade 30 is detachably fixed to the knife holder 40.

In one embodiment, an adjusting washer 50 is provided between the first tool seat 41 and the second tool seat 42. The adjusting washer 50 is detachably sleeved on the tool rod 20. And along the axial direction of the tool rod 20, two opposite end faces of the adjusting washer 50 are respectively against one tool seat 40.

It can be understood that in this embodiment, based on the fact that the tool holder 40 is detachably fixed to the tool rod 20, an adjusting washer 50 is provided between the two tool holders 40, and the two opposite end faces of the adjusting washer 50 are respectively abutted against one tool holder 40, so as to define the relative position between the two tool holders 40. At the same time, the adjusting washer 50 is detachably sleeved on the tool rod 20, so that the distance between the two tool holders 40 can be adjusted by replacing the adjusting washer 50 of different thickness or the adjusting washer 50 of different numbers, that is, the distance between the two blades 30 can be adjusted, so as to facilitate the same composite tool 100 to process bushing holes of different sizes.

In one embodiment, the thickness of the adjusting washer 50 may be in a range of 20 mm to 80 mm.

Please refer to Figures 2, 3 and 4, wherein Figure 2 is a schematic diagram of the decomposition of the composite tool 100 provided in another embodiment of the present application; Figure 3 is a schematic diagram of the structure of a tool holder 40 provided in one embodiment of the present application from one side perspective; and Figure 4 is a schematic diagram of the structure of a tool holder 40 provided in one embodiment of the present application from another side perspective.

As shown in Fig. 2 to Fig. 4, in one embodiment, the knife seat 40 is fixed to the knife rod 20, and two mounting grooves 43 can be provided on the knife seat 40, and the two mounting grooves 43 are arranged along the axial direction of the knife rod 20. The proximal blade 31 and the distal blade 32 can be selectively disposed in one of the mounting grooves 43, respectively.

It can be understood that in this embodiment, based on the tool holder 40 being fixed to the tool rod 20, two mounting grooves 43 are provided on the tool holder 40 along the axial direction of the tool rod 20 so that the proximal blade 31 and the distal blade 32 of different radii can be replaced, thereby realizing the processing of bushing holes with inner holes of different radii, thereby realizing the processing of bushing holes of different sizes by the same composite tool 100, thereby improving the versatility of the composite tool 100.

It should be noted that the number of mounting grooves 43 and tool holders 40 in the above embodiment is only introduced as an example. The number of mounting grooves 43 and tool holders 40 can be adaptively adjusted according to the actual application scenario. For example, multiple mounting grooves 43 can be set on the same tool holder 40 along the axial direction of the tool rod 20, and by replacing the mounting grooves 43 with blades 30 in different positions, the spacing between the blades 30 along the axial direction of the tool rod 20 can be adjusted, so as to achieve the same composite tool 100 Processing bushing holes of different thicknesses. Or a plurality of tool holders 40 arranged along the axial direction of the tool rod 20 can be set, and one or more mounting grooves 43 are set on each tool holder 40. By replacing the blades 30 in different mounting grooves 43, the above-mentioned beneficial effects can also be achieved, and the present application does not specifically limit this.

Please refer to Figures 5 to 8, wherein Figure 5 is a structural schematic diagram of a first tool seat 41 provided in an embodiment of the present application from a side perspective; Figure 6 is a structural schematic diagram of the first tool seat 41 provided in an embodiment of the present application from another side perspective; Figure 7 is a structural schematic diagram of a second tool seat 42 provided in an embodiment of the present application from a side perspective; Figure 8 is a structural schematic diagram of the second tool seat 42 provided in an embodiment of the present application from another side perspective.

As shown in Figures 4 to 8, in one embodiment, the first blade seat 41 and the second blade seat 42 are both disc-shaped. The number of the proximal blades 31 and the number of the distal blades 32 are both multiple, and the multiple proximal blades 31 are arranged along the circumference of the first blade seat 41, and the multiple distal blades 32 are arranged along the circumference of the second blade seat 42.

It can be understood that in this embodiment, a plurality of proximal blades 31 and a plurality of distal blades 32 are arranged along the circumference of the blade holder 40 , which can improve the cutting efficiency of the composite tool 100 .

In one embodiment, the tool holder 40 is provided with a mounting groove 43, and the mounting groove 43 includes a mounting surface 431 and a slag discharge groove 432. The blade 30 is fixed to the mounting surface 431 of the tool holder 40 by screws, and the debris generated after the blade 30 cuts the workpiece is discharged through the slag discharge groove 432 to avoid affecting the cutting of the blade 30.

In one embodiment, a limiting surface 433 is further provided on the mounting surface 431, and the blade 34 of the blade 30 extends out of the mounting slot 43. The limiting surface 433 abuts against other end surfaces of the blade 30 to limit the displacement of the blade 30. Specifically, there are two limiting surfaces 433, and a process hole 434 is further provided at the intersection of the two limiting surfaces 433. The process hole 434 has the function of preventing the blade 30 from being over-positioned.

In one embodiment, a water outlet is provided on the knife bar 20, and a through hole is provided on the knife seat 40, and the water outlet is connected with the through hole (not shown). By injecting cutting fluid into the water outlet, the cutting fluid flows through the through hole to the surface of the blade 30, which is conducive to the smooth cutting of the blade 30.

Please refer to Figures 1, 7 and 8. In one embodiment, the tool holder 40 can be detachably fixed to the tool rod 20. Along the radial direction of the tool rod 20, one of the tool rod 20 and the tool holder 40 is provided with a convex limit block 60, and the other is provided with a limit groove 70. The limit block 60 extends into the limit groove 70 and abuts against the inner wall of the limit groove 70 to limit the relative position between the tool holder 40 and the tool rod 20.

In this embodiment, based on the fact that the tool holder 40 can be detachably fixed to the tool rod 20, a limit block 60 is set between the tool rod 20 and the tool holder 40, and a limit groove 70 is matched to limit the relative position between the two, thereby preventing the tool holder 40 from rotating relative to the tool rod 20 and affecting the cutting effect.

It should be noted that the positions of the limit block 60 and the limit groove 70 in the above embodiment are only for illustrative purposes. The positions of the limit block 60 and the limit groove 70 can be swapped, which can also prevent the tool holder 40 from rotating relative to the tool rod 20.

In another embodiment, the knife seat 40 and the knife rod 20 are connected by a key, which can also prevent the knife seat 40 from rotating relative to the knife rod 20.

Please refer back to Figures 2, 3 and 4. In one embodiment, the composite tool 100 also includes an intermediate blade 33, which is detachably fixed to the tool rod 20 and is located between the proximal blade 31 and the distal blade 32. The radius of the intermediate blade 33 is smaller than the radius of the proximal blade 31 and larger than the radius of the distal blade 32.

In this embodiment, by arranging the intermediate blade 33 between the proximal blade 31 and the distal blade 32, and making the radius of the intermediate blade 33 smaller than the radius of the proximal blade 31 and larger than the radius of the distal blade 32, the same composite tool 100 can have three types of cutting processes, further improving the processing efficiency of the composite tool 100. For example, the distal blade 32 can be used for rough boring of the inner hole of the bushing hole, the intermediate blade 33 can be used for fine boring of the inner hole of the bushing hole, and the proximal blade 31 can be used for milling the end face of the bushing hole or for processing chamfers.

As shown in Fig. 2, in one embodiment, the blade 34 of the proximal blade 31 is perpendicular to the axial direction of the knife rod 20. The blade 34 of the proximal blade 31 is inclined relative to the axial direction of the knife rod 20. In this embodiment, by setting the blade 34 of the proximal blade 31 perpendicular to the axial direction of the knife rod 20, the proximal blade 31 is set as a milling cutter for milling the end face of the bushing hole, thereby ensuring the surface roughness of the end face of the bushing hole.

As shown in FIG1 , in one embodiment, the blade 34 of the proximal blade 31 is inclined relative to the axial direction of the blade rod 20. In this embodiment, by setting the blade 34 of the proximal blade 31 to be inclined relative to the axial direction of the blade rod 20, the proximal blade 31 is set as a chamfering tool for chamfering the end surface of the bushing hole, thereby reducing the stress concentration on the end surface of the bushing hole. The chamfering tool includes a rounded corner and a chamfered corner, and the chamfer size is between C1 and C5.

In one embodiment, the distal blade 32 can be set as a boring tool for rough machining the inner hole of the bushing hole, and the proximal blade 31 can be set as a chamfering tool for chamfering the end face of the bushing hole. In this case, the composite tool 100 of the present application is a composite tool 100 for drilling and chamfering (as shown in FIG. 1 ). It should be noted that the bushing hole is realized by casting, and the drilling here refers to the expansion of the hole.

In one embodiment, the distal blade 32 can be set as a fine boring tool for fine machining the inner hole of the bushing hole to improve the finish of the inner hole of the bushing hole. The middle blade 33 can be set as a milling cutter, and the proximal blade 31 can also be set as a milling cutter (as shown in Figure 2). When the fine boring tool completes the cutting beyond the hole depth, the cutting parameters of the tool rod 20 along the circumferential direction can be adjusted to achieve the cutting processing of the upper and lower end faces of the bushing hole. It should be noted that the fine boring tool can be formed by fine grinding of a carbide rod, or it can be formed by fine grinding after welding a PCD blade 30 to the tool tip. At this time, the composite tool 100 of the present application is a composite tool 100 that integrates hole fine boring and upper and lower end face processing.

In one embodiment, the blades 30 of the present application are all indexable blades. Compared with the structure in which the blade and the blade holder are welded into one piece in the prior art, the present application has higher flexibility and lower replacement cost.

In addition, the present application also provides a machine tool, comprising a bed and a composite tool 100 as in any of the above embodiments, wherein the composite tool 100 is movably connected to the bed and used for cutting a workpiece.

It can be understood that the machine tool provided in the present application has all possible beneficial effects obtained in any embodiment of the composite tool 100 provided in the present application because it adopts the composite tool 100 provided in the present application.

It should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

It should be understood that the application of this application is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of this application still fall within the scope covered by this application.

Claims (10)

1. The utility model provides a compound cutter, its characterized in that includes handle of a knife, cutter arbor, distal end blade and proximal end blade, the handle of a knife with cutter arbor fixed connection, distal end blade with proximal end blade can be dismantled respectively and be fixed in the cutter arbor, proximal end blade is located distal end blade with between the handle of a knife, the radius size of distal end blade is less than the radius size of proximal end blade.

2. The compound tool of claim 1, wherein the compound tool comprises a tool holder detachably secured to the tool bar, the proximal and distal blades being secured to the tool holder; and/or the number of the groups of groups,

The tool holder is fixed to the tool bar, and the proximal blade and the distal blade are detachably fixed to the tool holder.

3. The composite tool according to claim 2, wherein said tool holders are removably secured to said tool bar, said number of tool holders being two, said proximal and distal blades being provided on one of said tool holders, respectively.

4. A compound cutter according to claim 3, wherein an adjusting washer is arranged between the two cutter holders, the adjusting washer is detachably sleeved on the cutter bar, and two opposite end surfaces of the adjusting washer are respectively abutted against one cutter holder along the axial direction of the cutter bar.

5. The composite tool according to claim 2, wherein the tool holder is fixed to the tool bar, the tool holder is provided with a plurality of mounting grooves along an axial direction of the tool bar, and the proximal blade and the distal blade are selectively provided in one of the mounting grooves, respectively.

6. The composite tool according to any one of claims 2-5, wherein the tool holder has a disc shape, the number of the proximal blades is plural, and the plural proximal blades are arranged along the circumferential direction of the tool holder; and/or the number of the groups of groups,

The number of the distal blades is multiple, and the multiple distal blades are distributed along the circumferential direction of the tool apron.

7. The composite tool according to any one of claims 2-5, wherein the tool holder is detachably fixed to the tool holder, one of the tool holder and the tool holder is provided with a limiting block in a protruding manner along a radial direction of the tool holder, and the other is provided with a limiting groove, and the limiting block extends into the limiting groove and abuts against an inner wall of the limiting groove so as to limit a relative position between the tool holder and the tool holder.

8. The composite tool of any one of claims 1-5 further comprising an intermediate blade removably secured to the tool shaft and positioned between the proximal blade and the distal blade, the intermediate blade having a radius that is less than the radius of the proximal blade and greater than the radius of the distal blade.

9. The compound cutter of any one of claims 1-5, wherein the cutting edge of the proximal blade is perpendicular to the axial direction of the cutter bar; or the cutting edge of the proximal blade is inclined with respect to the axial direction of the cutter bar.

10. A machine tool comprising a machine bed and a compound tool according to any one of claims 1 to 9, said compound tool being movably connected to said machine bed for cutting a workpiece.