Double-arc-surface slotting tool

Abstract

The utility model relates to a double-arc-surface slotting tool which comprises a connecting part used for being connected with a machine tool spindle. The slotting tool part is connected with the connecting part, and the slotting tool part comprises a tool body, two arc main blades connected to the bottom end of the front side of the tool body, a first transition arc main blade connected between the arc main blades and the tool body, and a second transition arc main blade connected between the two arc main blades; and a tool nose included angle formed by the two arc main edges, the first transition arc main edge and the second transition arc main edge is 5-30 degrees. According to the slotting tool, through the integrated design, the arc main edge, the first transition arc main edge and the second transition arc main edge are arranged on the tool body, and the main shaft drives the slotting tool to penetrate through a workpiece downwards, so that machining of a corresponding special hole can be completed; when the tool is used for machining, the tool changing frequency can be remarkably reduced, the machining time can be remarkably shortened, the productivity is improved to 7H / PCS from 15H / PCS, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a double arc surface inserting tool. Background Art

[0002] like Figure 1 As shown, a batch of nylon plate parts need to be processed with characteristic holes 1, which include a main hole 2 of R10.5 and two auxiliary holes 3 of R2.5 connected to one side of the main hole. A first transition fillet 4 of R1.0 mm is connected between the main hole and the auxiliary hole, and a second transition fillet 5 of R1.0 is connected between the two auxiliary holes. When the existing process is processed on CNC equipment, at least a milling cutter with an outer diameter less than R1.0 needs to be replaced to mill the auxiliary holes, the first transition fillet, and the second transition fillet. The thickness of the plate part is 60.0 mm. According to the above processing flow, the efficiency is very low, only 15H / PCS, which cannot meet the customer's delivery time and quality. Therefore, at this stage, it is necessary to develop a tool suitable for CNC equipment that can realize characteristic hole processing with faster efficiency. Utility Model Content

[0003] Based on this, the utility model provides a double arc surface insert to solve the above problem.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A double arc surface insert, comprising:

[0006] A connecting part for connecting with the main shaft of a machine tool;

[0007] A blade inserting portion, which is connected to the connecting portion, comprises a blade body, two arc main blades connected to the bottom end of the front side of the blade body, a first transition arc main blade connected between the arc main blades and the blade body, and a second transition arc main blade connected between the two arc main blades; a blade tip angle formed by the two arc main blades, the first transition arc main blade, and the second transition arc main blade is between 5° and 30°.

[0008] Furthermore, the connecting portion is cylindrical.

[0009] Furthermore, the blade is a stainless steel blade.

[0010] Furthermore, the extending surfaces of the arc main cutting edge, the first transition arc main cutting edge, and the second transition arc main cutting edge along the connecting portion direction form rake surfaces.

[0011] Furthermore, the radius of the arc main edge is R2.5 mm, and the radii of the first transition arc main edge and the second transition arc main edge are both R1.0 mm.

[0012] Furthermore, a flank surface is formed on a common bottom surface of the tool body, the two circular arc main cutting edges, the first transition circular arc main cutting edge, and the second transition circular arc main cutting edge.

[0013] Furthermore, auxiliary back surfaces are formed on the left and right side surfaces of the tool body.

[0014] Furthermore, the tool tip angle is 20°.

[0015] The beneficial effects of the utility model are:

[0016] 1. Efficient processing: This insert cutter adopts an integrated design. Two arc main cutting edges connected to the bottom of the front side of the cutter body, a first transition arc main cutting edge connected between the arc main cutting edge and the cutter body, and a second transition arc main cutting edge connected between the two arc main cutting edges are provided on the cutter body. When the spindle drives this cutter downward to penetrate the workpiece, the corresponding special hole processing can be completed. Compared with the existing process that requires the replacement of milling cutters of different diameters, the use of this cutter for processing can significantly reduce the number of tool changes and shorten the processing time, and the production capacity is increased from 15H / PCS to 7H / PCS, thereby improving production efficiency.

[0017] 2. Stable cutting: This insert is provided with an arc main edge and a transition arc main edge. The two arc main edges, the first transition arc main edge, and the second transition arc main edge form a tip angle of 20°. With the use of stainless steel to form the cutter body, sufficient cutting force can be maintained. In addition, the common bottom surface of the cutter body, the two arc main edges, the first transition arc main edge, and the second transition arc main edge forms a back cutter face, and the left and right sides of the cutter body form auxiliary back cutter faces, which can assist in guiding and discharging chips to ensure a stable cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the workpiece structure required to be produced in the background technology;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0021] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 5 It is a side view structural schematic diagram of the utility model;

[0023] Figure 6 It is a schematic diagram of the processing state of the utility model.

[0024] 1. Feature hole; 2. Main hole; 3. Auxiliary hole; 4. First transition fillet; 5. Second transition fillet;

[0025] 10. Connecting portion; 20. Inserting portion; 21. Tool body; 22. Arc main cutting edge; 23. First transition arc main cutting edge; 24. Second transition arc main cutting edge; 25. Front cutting edge; 26. Back cutting edge; 27. Secondary back cutting edge. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention 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 understanding of the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] like Figure 2-Figure 6 As shown, a double arc surface inserting tool comprises a connecting portion 10 and an inserting tool portion 20;

[0030] The connecting portion 10 is for connecting with the main shaft of the machine tool; in the present embodiment, the connecting portion 10 is cylindrical, which can connect with the main shaft of the machine tool more stably, increase the contact area, and help improve the stability and processing accuracy of the slotting tool;

[0031] The inserting blade portion 20 is connected to the connecting portion 10, and the inserting blade portion 20 includes a blade body 21, two arc main cutting edges 22 connected to the front bottom end of the blade body 21, a first transition arc main cutting edge 23 connected between the arc main cutting edges 22 and the blade body 21, and a second transition arc main cutting edge 24 connected between the two arc main cutting edges 22; specifically, the radius of the arc main cutting edge 22 is R2.5 mm, and the radius of the first transition arc main cutting edge 23 and the second transition arc main cutting edge 24 are both R1.0 mm, so as to adapt to the parameters of the required processing characteristic hole;

[0032] The tool tip angle formed by the two arc main edges 22, the first transition arc main edge 23, and the second transition arc main edge 24 is between 5° and 30°; in this embodiment, the tool tip angle a is 20°, which provides sufficient cutting force for nylon material while ensuring that the tool has a sufficient life;

[0033] The arc main edge 22, the first transition arc main edge 23, and the second transition arc main edge 24 are formed with a rake face 25 along the extension surface in the direction of the connecting portion 10; after the formed tool tip grooves the workpiece, the rake face 25 will continue to contact with the grooved forming surface, and slightly grind the burr surface that may exist on the surface, which helps to improve the cutting efficiency and the quality of the machined surface, reduce the subsequent surface treatment requirements, and optimize the cutting surface;

[0034] The common bottom surface of the cutter body 21, the two circular arc main edges 22, the first transition circular arc main edge 23, and the second transition circular arc main edge 24 forms a flank face 26, and the left and right side surfaces of the cutter body 21 form auxiliary flank faces 27. The flank faces 26 and the auxiliary flank faces 27 formed above can guide the discharge of debris, avoid the accumulation of debris at the tip of the cutter to cause temperature rise, and improve the cutting quality;

[0035] In this embodiment, the insert is a white steel insert, which has the advantages of high hardness and sharpness, and has a long processing life when applied to nylon parts.

[0036] Working principle: The parts are fixed on the CNC machine tool, and according to the original processing flow, except for 3xR5 of each station, the rest of the parts are processed in place, the spindle is replaced with the insert tool, and the tool Z, X, and Y directions are calibrated. The CNC spindle does not rotate, but only inserts the spindle from top to bottom to the processing position required by the drawing until all the characteristic holes are processed.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A double arc surface insert, characterized in that: include: A connecting part for connecting with the main shaft of a machine tool; A blade inserting portion, which is connected to the connecting portion, comprises a blade body, two arc main blades connected to the bottom end of the front side of the blade body, a first transition arc main blade connected between the arc main blades and the blade body, and a second transition arc main blade connected between the two arc main blades; a blade tip angle formed by the two arc main blades, the first transition arc main blade, and the second transition arc main blade is between 5° and 30°.

2. A double arc surface insert according to claim 1, characterized in that: The connecting portion is cylindrical.

3. A double arc surface insert according to claim 1, characterized in that: This blade is made of stainless steel.

4. A double arc surface insert according to claim 1, characterized in that: The extending surfaces of the arc main cutting edge, the first transition arc main cutting edge, and the second transition arc main cutting edge along the connecting portion direction form rake surfaces.

5. A double arc surface insert according to claim 4, characterized in that: The radius of the arc main edge is R2.5 mm, and the radius of the first transition arc main edge and the second transition arc main edge are both R1.0 mm.

6. A double arc surface insert according to claim 1, characterized in that: A flank surface is formed on a common bottom surface of the tool body, the two circular arc main edges, the first transition circular arc main edge, and the second transition circular arc main edge.

7. The double arc surface insert according to claim 1, characterized in that: Auxiliary back surfaces are formed on the left and right side surfaces of the knife body.

8. The double arc surface insert according to claim 1, characterized in that: The knife tip angle is 20°.

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