Multi-cutting-edge composite rough boring cutter

Abstract

The utility model relates to a multi-cutting-edge composite rough boring cutter which comprises a cutter handle, a cutter row seat and at least three cutting tools, the cutter handle is fixedly connected with the cutter row seat, the cutting tools are installed on the cutter row seat, and cutter heads of the cutting tools are designed in a layered progressive mode in the axial size and the radial size respectively. The boring cutter designed according to the scheme aims to improve the rough machining efficiency of the inner hole of the casting, reduce the load of the cutter and a machine tool and enable cutting to be more stable. According to the scheme, the number of the cutting tools is at least three, the tool bits of the cutting tools are designed in a layered progressive mode in the axial size and the radial size respectively, and therefore the multi-blade composite rough boring tool is formed to conduct progressive boring machining on inner holes of castings, the machining efficiency can be greatly improved, cutting noise can be eliminated in the progressive machining process, and the machining efficiency is improved. Loads of a cutter, an accessory head and a machine tool are reduced, and the service life of the side milling head is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field especially relates to a multi -blade composite rough boring cutter. BACKGROUND

[0002] In the traditional boring cutter processing inner hole rough processing method, the corn milling cutter of 80mm diameter is clamped by the side milling head, the cutting depth is 75mm, the back engagement amount is 15mm, the boring cutter will impact the inner hole of the casting blank once every rotation, and the machine tool emits continuous impact sound in the continuous rotation processing process, and the tool, the accessory head and the machine tool are all overloaded. INVENTION CONTENTS

[0003] The utility model discloses a multi -blade composite rough boring cutter to solve the problems encountered in the above background.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A multi -blade composite rough boring cutter, including handle, cutter row seat and cutting tool, handle and cutter row seat fixed connection, cutting tool is installed on the cutter row seat, and cutting tool is equipped with at least three, and the cutter head of cutting tool is designed in layered progression in axial dimension and radial dimension.

[0006] In the above scheme, the handle is provided with a clamping groove connected with the side milling head of the machine tool working end, the cutter head of the cutting tool is increased by 2-7mm in thickness size in axial dimension each time, and the cutter head of the cutting tool is increased by 2-7mm in length size in radial dimension each time.

[0007] In the above scheme, the cutter row seat is detachably connected with the handle through a plug screw, and the cutter row seat is provided with a mounting groove matched with the cutting tool.The cutting tool is detachably connected with the cutter row seat through a fixing bolt matched with a nut.

[0008] In the above scheme, the cutter head of the cutting tool is provided with a first inclined surface in the radial direction, and the first inclined surface is inclined downward by 5-15 degrees.Further, the cutter head of the cutting tool is provided with a second inclined surface in the axial direction, and the second inclined surface is inclined upward by 10-45 degrees.Further, one side of the connection between the first inclined surface and the second inclined surface is provided with a third inclined surface, and the other side of the connection between the first inclined surface and the second inclined surface is provided with a cutter groove, and the notch corner of the cutter groove is in the same position as the starting point of the third inclined surface.

[0009] Compared with existing technologies, the beneficial effects of this utility model are as follows: The purpose of this boring tool design is to improve the roughing efficiency of the inner hole of the casting, reduce the load on the tool and machine tool, and make the cutting more stable. In this design, at least three cutting tools are provided, and the cutting tool tips are designed in a layered and progressive manner in both the axial and radial dimensions, thus forming a multi-edged composite roughing boring tool for progressive boring of the inner hole of the casting. This can greatly improve the machining efficiency, and the progressive machining process helps to eliminate cutting noise, reduce the load on the tool, attachment head, and machine tool, and extend the service life of the side milling head. Attached Figure Description

[0010] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective;

[0013] Figure 3 This is a side view of the structure of this utility model;

[0014] Figure 4 This is a front view structural diagram of the present utility model;

[0015] Figure 5 This is a schematic diagram of the cutting tool in this utility model;

[0016] Figure 6 This is a schematic diagram of the structure of the knife rack support in this utility model;

[0017] Figure 7 This is a schematic diagram of the present invention during processing.

[0018] The numbers in the diagram are: 1-tool holder; 11-nut; 12-slot; 2-tool holder; 21-plug screw; 22-mounting slot; 3-cutting tool; 31-fixing bolt; 32-first bevel; 33-second bevel; 34-third bevel; 35-tool groove. Detailed Implementation

[0019] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model, and therefore only show the relevant components of this utility model.

[0020] According to the technical scheme of the utility model, a plurality of structure modes and implementation modes which can be replaced with each other can be proposed by the general skilled in the art without changing the essential spirit of the utility model. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or regarded as the limitation or restriction of the technical scheme of the utility model.

[0021] The technical scheme of the utility model will be further described in detail below in combination with the drawings and embodiments.

[0022] As Figures 1-4 shown, a multi-blade combined rough boring cutter comprises a cutter handle 1, a cutter row seat 2 and cutting tools 3, the cutter handle 1 is fixedly connected with the cutter row seat 2, in implementation, the cutter row seat 2 can be detachably connected with the cutter handle 1 through a plug screw 21, so that different models of cutting tools can be replaced, and inner holes of different depths or diameters can be processed.

[0023] The cutting tools 3 are installed on the cutter row seat 2, in implementation, referring to Figure 6 , the cutter row seat 2 is provided with installation grooves 22 matched with the cutting tools 3, the cutting tools 3 are positioned after being installed in the installation grooves 22, then the cutting tools 3 are detachably connected with the cutter row seat 2 through fixed bolts 31 matched with nuts 11, and the cutting tools 3 can be disassembled and replaced when the cutting tool heads are damaged.

[0024] The cutting tools 3 are at least three, the cutting tool heads of the cutting tools 3 are designed in layers and progressions in axial dimension and radial dimension respectively, thereby forming the multi-blade combined rough boring cutter to process the inner hole in progression. In order to better cutting processing, five cutting tools 3 can be arranged and installed on the cutter row seat 2, and five claws are also arranged on the cutter row seat 2 to facilitate the installation of the five cutting tools 3.

[0025] The cutter handle 1 is provided with a clamping groove 12 connected with a side milling head on the working end side of a machine tool, under the driving of a machine tool screw nut mechanism, the side milling head drives the cutting tools 3 to move to a working position together.

[0026] The cutting tool head of the cutting tool 3 increases in thickness dimension by 2-7 mm in axial dimension each time, that is, the thickness dimension of the two connected cutting tools 3 is different by 2-7 mm, preferably 2 mm. The cutting tool head of the cutting tool 3 increases in length dimension by 2-7 mm in radial dimension each time, that is, the length dimension of the two connected cutting tools 3 is different by 2-7 mm in length dimension, preferably 5 mm.

[0027] Please refer to Figure 1 and Figure 7, the cutter row seat 2 is uniformly distributed with five rough boring cutters, each cutting tool 3 is layered in the axial and radial directions, so that the cutting force is uniformly distributed to each cutter, and the single-sided allowance of the machined casting blank inner hole is 25mm, in the case of using five rough boring cutters, each cutter is different by 5mm, which can be machined in place at one time, that is, each cutter bears a radial cutting amount of 5mm. The selected is a 75-degree left-hand turning tool. In order to achieve axial layering cutting and superposition of 5mm radial layering, the axial difference of each rough turning tool must be greater than tan15*5=1.35mm, and the axial thickness of the composite cutter can be selected to be 2mm.

[0028] As a preferred scheme, please refer to Figure 5 , the first inclined surface 32 is provided on the radial direction of the tool head of the cutting tool 3, and the first inclined surface 32 is inclined downward by 5-15 degrees, so as to facilitate the appearance of the tool tip for rough boring cutter machining, and the cutting process is more smooth. Further, the second inclined surface 33 is provided on the axial direction of the tool head of the cutting tool 3, and the second inclined surface 33 is inclined upward by 10-45 degrees, so as to form a tool tip, and the machining degree is larger. Further, the third inclined surface 34 is provided on one side of the connection between the first inclined surface 32 and the second inclined surface 33, and the tool groove 35 is provided on the other side of the connection between the first inclined surface 32 and the second inclined surface 33, the groove edge of the tool groove 35 is in the same position as the starting point of the third inclined surface 34, and the third inclined surface 34 is inclined by 5-15 degrees. It is mainly composed of a tool tip structure formed by three surfaces, so that the boring cutter cutting is more smooth, and the cutting debris falls from the tool groove 35.

[0029] The tool groove 35 can also install a turning tool insert during use, and different models of turning tool inserts can be installed according to needs to realize boring machining, so that the rough boring cutter has more use range.

[0030] The purpose of designing such a boring cutter in the scheme is to improve the rough machining efficiency of the casting inner hole, reduce the tool and machine tool load, and make the cutting more stable. In the scheme, the cutting tool 3 is provided with at least three, the tool head of the cutting tool 3 is designed to be layered and progressive in the axial and radial dimensions, thereby forming a multi-blade composite rough boring cutter to perform progressive boring machining on the casting inner hole, which can greatly improve the machining efficiency, and the progressive machining process is beneficial to eliminate cutting noise, reduce the load of the tool, accessory head and machine tool, and prolong the service life of the side milling head.

[0031] The multi-blade composite boring cutter is installed on a right-angle side milling head, the right-angle side milling head can bear heavy cutting load, and the distance between the mandrels is about 650mm. There are five rough boring cutters combined to form the rough boring cutter, and the cutting force is evenly dispersed by the 72-degree included angle of each cutter. When the rough machining of the inner hole of the casting is performed, it is a semicircular hole, and the allowance of the center joint surface is greater than 180 degrees. When the composite boring cutter is used for machining, 2-3 turning cutters are always in cutting, so that the damage to the accessory head gear caused by intermittent cutting can be avoided. On the other hand, the three cutters that cut at the same time are dispersed at different circumferential angles, so that the torque load at a single angle is offset, thereby protecting the accessory head from fatigue damage caused by long-term work.

[0032] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] The above specific embodiments further explain the purpose, technical solutions and advantages of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A multiple blade compound rough boring cutter characterized by: The application relates to a cutting tool, which comprises a tool holder (1), a tool row seat (2) and cutting tools (3), wherein the tool holder (1) is fixedly connected with the tool row seat (2), the cutting tools (3) are installed on the tool row seat (2), and the cutting tools (3) are at least three in number; the cutting tool heads of the cutting tools (3) are designed in a layered and progressive manner in axial and radial dimensions.

2. A multi-edge compound rough boring cutter according to claim 1, wherein: The thickness of the cutting tool head of the cutting tool (3) is increased by 2-7 mm in the axial dimension each time, and the length of the cutting tool head of the cutting tool (3) is increased by 2-7 mm in the radial dimension each time.

3. The multi-edge compound rough boring cutter according to claim 1, wherein: The tool holder (1) is provided with a clamping groove (12) connected with a milling head on the working end side of a machine tool.

4. The multi-edge compound rough boring cutter according to claim 1, wherein: The tool row seat (2) is detachably connected with the tool holder (1) through a plug screw (21), and the tool row seat (2) is provided with an installation groove (22) matched with the cutting tools (3).

5. A multiple blade compound roughing cutter according to claim 4 wherein: The cutting tools (3) are detachably connected with the tool row seat (2) through fixing bolts (31) matched with nuts (11).

6. A multi-edge compound rough boring cutter according to claim 1, wherein: The cutting tool head of the cutting tool (3) is provided with a first inclined surface (32) in the radial direction, and the first inclined surface (32) is inclined downward by 5-15 degrees.

7. A multi-edge compound rough boring cutter according to claim 6, wherein: The cutting tool head of the cutting tool (3) is provided with a second inclined surface (33) in the axial direction, and the second inclined surface (33) is inclined upward by 10-45 degrees.

8. A multi-edge compound rough boring cutter according to claim 6, wherein: One side of the joint of the first inclined surface (32) and the second inclined surface (33) is provided with a third inclined surface (34), and the other side of the joint of the first inclined surface (32) and the second inclined surface (33) is provided with a tool groove (35), and the notch corner of the tool groove (35) is located at the same position as the starting point of the third inclined surface (34).

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