Machining method for adjacent working procedures of rotary surface, application and finish turning and tapping tool

Abstract

The invention provides a machining method for adjacent working procedures of a rotary surface, application of the machining method and a finish turning and tapping tool, two tool noses used in the two adjacent working procedures are arranged on the same blade side by side, and specifically, the tool noses used in the two adjacent working procedures of finish machining and tapping are arranged on the same blade side by side. A height difference exists between the finish turning tool nose and the tapping tool nose, and the height difference between the finish turning tool nose and the tapping tool nose is equal to the depth of a thread. In the prior art, two working procedures need to be completed through two kinds of blades by clamping twice, tool setting twice and machining twice respectively, after the two tool noses are combined together, only one kind of blade needs to be used for completing one-time clamping, one-time tool setting and one-time machining, the finish turning working procedure and the tapping working procedure are conducted at the same time, and compared with the prior art which is completed step by step, the production efficiency is greatly improved, and the production cost is reduced. Repeated clamping errors and re-tool setting errors are avoided, errors caused by shape change due to tool re-selection do not exist, and the machining precision is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining tools, and more specifically, to a machining method for adjacent processes of a rotary surface, a machining method for finish turning and tapping, and a finish turning and tapping integrated tool. Background Art

[0002] In the mechanical processing industry, when tapping, thread turning is usually carried out after finish machining. These two processes require two types of inserts to be clamped twice, aligned twice, and processed twice. After finish machining, when installing the tapping insert again, there is an error in the re-clamping. The height difference between the two tools also needs to be controlled during the two clamps to ensure the thread depth, which adds another error. Re-aligning the tool and the change in the tool shape result in the superposition of various errors, affecting the machining accuracy. Operations such as parking for clamping and tool alignment also lead to low machining efficiency.

[0003] 1. For the invention patent with the application number 201620168704.4 and the patent name of a multifunctional tool for lathe, the tool tip of another ordinary machining tool is welded to the back of an ordinary sealing surface machining tool, forming a tool that retains the original sealing surface tool tip to machine the sealing surface and end face of the product, and the other tool tip is the same as an external turning tool to machine the external circle of the product. By combining the external turning tool and the sealing surface tool into one, one tool can machine the external circle of the product, the end face, and the sealing surface of the product, reducing the number of tool positions occupied by the tool on the tool rest. When installing the tool, they will not affect each other, reducing the tool change frequency during the machining process and improving the production efficiency. This solution reduces the number of tool positions occupied by the tool on the tool rest, reduces the number of clamping times, and reduces the clamping error. However, when in use, it still requires parking and tool alignment, which has limited improvement in production efficiency.

[0004] 2. For the invention patent with the application number 202120435401.5 and the patent name of a low-cost and highly versatile turning combination tool, an integrated tool with multiple heads and a detachable setting has better advantages in terms of efficiency and quality compared to multi-tool tool change machining. It can machine the end face, rear end face, inner holes of both ends of the stop, and both the first tool body and the second tool body can be replaced, enabling one tool to machine multiple parts, avoiding tool change errors, and preventing misalignment during the tool body replacement from affecting the subsequent machining dimensions through the limiting effect between the first positioning hole, the second positioning hole, and the positioning post, solving the problem of tool change deviation in general lathe machining products and improving product efficiency. Those skilled in the art can see from the attached Figure 1 of this patent that this kind of tool is generally a chamfering tool. Two tools are installed on one tool holder, one for chamfering the left side and the other for chamfering the right side. They are used separately during machining. Although several inserts are installed on one tool, all processes are completed step by step during machining, and tool alignment is required again for each process.

[0005] The paper numbered 1002 - 2333(2004)04 - 0044 - 02, with the title of "Analysis of Tool Changing Errors in CNC Lathes", analyzed the composition of tool changing errors in CNC lathes and proposed methods to reduce tool changing errors. The tool changing errors in CNC lathes include tool setting errors, tool rotation errors, and indexing errors. To reduce tool setting errors, a constant feed step mode is adopted during tool setting, and at the same time, the minimum single - step value (such as 0.001) is used for trial cutting. In addition, a special fixture should be used to improve the accuracy of tool setting in the Z - direction. Since tool setting in the Z - direction generally requires setting a fixed point in the Z - direction, measuring the distance from different tool tips to this point when they are at the same position and inputting it, using a special fixture can effectively improve the accuracy of the input value. Or first turn a end face, then turn a step and measure the width of the step to perform tool setting in the Z - direction. To reduce tool rotation errors, the first method is to use a high - precision tool post, and the second is to reduce the types of tools to reduce the number of tool changes. For example, using a double - point tool ( Figure 2 ) instead of a left - hand tool and a right - hand tool, so that the machining of a formed surface that originally required two tools can be completed with one tool, thus reducing the tool rotation error.

[0006] In the above two patents, blades are added to the tool shank, reducing the number of clamping times, reducing the errors generated during tool changing, and improving production efficiency. However, in actual use, for each completed machining process, it is necessary to stop the machine to change tools and set tools, and there are still tool changing and tool setting errors. Although the tool changing and clamping time is reduced, the improvement of production efficiency is limited. Similarly, in the above - mentioned paper, to reduce the tool rotation error, a double - point tool as described in the paper Figure 2 is used, so that the machining of a formed surface that originally required two tools can be completed with one tool. The double - point tool has the same principle as the above two patents, that is, adding a blade to the original tool shank. Although one tool has the functions of two tools, the two processes are still completed step by step.

[0007] There are many multi - functional tools proposed in the above two patents and the paper in the prior art, and even tools with 8 tool tips and 16 tool tips, such as Figure 1 and Figure 2 shown. These tools can reduce the number of clamping times, improve the cost - performance of the tools, and improve production efficiency, but still need to stop the machine to set tools, there are tool setting errors, and the improvement of production efficiency is limited.

[0008] 3. The invention patent with the application number 201920475713.1 and the patent title of "A Multi - functional Tool" integrates a drilling tool, a chamfering tool, and a milling tool for plane. During use, the drill bit first drills a hole, then the chamfering tool chamfers, and finally the milling tool for plane mills the plane. During the use process, there is no need to change tools, and multiple processes can be completed with one positioning, improving the machining efficiency of the workpiece.

[0009] The third patent has been improved compared to the first and second patents. It not only reduces the number of clamping operations but also eliminates the need for tool setting. Multiple processes can be completed in one go. However, during machining, each process is still completed step by step. For example, in the third patent, drilling is carried out first, then chamfering, and finally face milling. Chamfering can only be carried out after drilling is completed, and face milling can only be carried out after chamfering is completed, all in sequence. This patent includes a drill bit, and the length of the drill bit must be adapted to the depth of the hole. It cannot be too short to ensure the depth of the hole and the correct position of the chamfer. Therefore, for the third patent, these three steps are not carried out simultaneously. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a machining method for adjacent processes on a rotary surface, a machining method for precision turning and tapping, and a precision turning and tapping integrated tool that can not only eliminate the need for in-process clamping and tool setting errors but also greatly improve production efficiency, in view of the limited improvement in production efficiency of existing multi-functional tools in solving the technical problems of in-process clamping and tool setting errors.

[0011] A machining method for adjacent processes on a rotary surface, where the two tool tips used for two adjacent processes are arranged side by side on the same blade, and the tool tip of the previous process is in front of the tool tip of the subsequent process, enabling the two adjacent processes to simultaneously machine the rotary surface.

[0012] The above-mentioned rotary surface includes cylindrical surfaces, conical surfaces, spherical surfaces, inclined surfaces, threads, gears, etc. The machining method does not require in-process clamping, has no tool setting errors, and the two processes are carried out simultaneously instead of step by step, greatly improving production efficiency compared to the prior art. The above-mentioned tool tip of the previous process being in front of the tool tip of the subsequent process means that after tool setting, the tool tip closer to the surface of the workpiece to be machined is the front. For example, in the processes of precision turning and tapping, precision turning is carried out first and then tapping, so the tool tip for precision turning is in front of the tool tip for tapping.

[0013] In the above-mentioned method, the blades for adjacent processes are combined together, eliminating the need for in-process clamping and tool setting. The two blades machine simultaneously, greatly improving production efficiency.

[0014] The present invention also provides a machining method for precision turning and tapping, where the precision turning tool tip for precision turning and the tapping tool tip for tapping are arranged side by side on the same blade, and the precision turning tool tip is in front of the tapping tool tip, enabling the precision turning and tapping processes to be carried out simultaneously.

[0015] The machining method of finish turning and tapping is an application of the machining methods of adjacent processes of the rotary surface described above. During machining, finish turning is carried out first and then tapping, so the finish turning tool tip is located in front of the tapping tool tip. For example, when the workpiece is on the right side of the tool, the finish turning tool tip is closer to the surface to be machined on the right side, and the tapping tool tip is on the left side.

[0016] The present invention also provides an integrated tool for finish turning and tapping, which includes a blade and a tool shank. The blade includes a body and a tool tip, and the tool tip includes the finish turning tool tip and the tapping tool tip; the finish turning tool tip and the tapping tool tip are arranged side by side on the same blade, and the finish turning tool tip is located in front of the tapping tool tip; there is a height difference between the finish turning tool tip and the tapping tool tip, and the height difference between the finish turning tool tip and the tapping tool tip is equal to the depth of the thread.

[0017] In the prior art, when thread machining is carried out, after the rotary surface is finish machined, tapping is carried out. Therefore, the tapping tool tip described in this application is longer than the finish turning tool tip to ensure the depth of the thread. In the prior art, two processes require two blades to be clamped twice, aligned twice and processed twice respectively. After the two tool tips in this application are combined together, only one type of blade is needed for one clamping, one alignment and one processing, that is, the finish turning and tapping processes are carried out simultaneously. Compared with the step-by-step completion in the prior art, the production efficiency is greatly improved. The re-clamping error and re-alignment error are avoided, and there is no error caused by the change of tool shape when re-selecting the tool, which greatly increases the machining accuracy. Structurally speaking, when a general tool tip is in use, only the cutting edge on one side of the tool tip is in use, and the other side does not contact the workpiece and mainly plays a role in increasing strength. In this application, the finish turning tool tip and the tapping tool tip are combined together, and they both contact the workpiece, and also play a role in supporting each other and increasing strength during machining.

[0018] Further, the distance between the finish turning tool tip and the tapping tool tip is between 0.5 and 2 pitches.

[0019] Further, the finish turning tool tip and the tapping tool tip are connected by an arc transition, and the diameter of the arc is 0.1-0.2 mm.

[0020] Further, there is a relief design between the finish turning tool tip and the tapping tool tip, that is, during machining, there is a gap between the arc transition and the workpiece.

[0021] There is an arc transition between the finish turning tool tip and the tapping tool tip, and interference with the workpiece cannot occur during machining. Therefore, the arc transition has a relief design.

[0022] Further, the blade is a indexable insert, and each tool tip of the indexable insert includes the finish turning tool tip and the tapping tool tip. This improves the cost performance of the blade.

[0023] Further, the body is in a triangular structure, and the blades at each corner include the finish turning tip and the tapping tip. A screw hole for installing a screw is provided in the middle of the body, and the three corners are evenly distributed at 120 degrees according to the axis of the screw hole.

[0024] Further, a notch is formed at the end of the tool holder, and a blade mounting surface is provided at the notch. The blade is mounted in the notch; for the blade in a triangular structure, the positioning surface is between two corners. The shape of the notch is adapted to the shape of the blade, and two of the positioning surfaces are in contact with the inner wall of the notch; the tip does not contact the inner wall of the notch. A clearance design should be made between the tip and the inner wall of the notch to avoid damaging the tip.

[0025] Further, the finish turning tip, the tapping tip and the body are of an integral structure.

[0026] Further, the cutting edge of the finish turning tip and the cutting edge of the tapping tip are on the same horizontal plane.

[0027] Further, chip-breaking grooves are respectively formed on the rake faces of the finish turning tip and the tapping tip.

[0028] Further still, a land is provided at the transition between the rake face and the flank face of the finish turning tip. The land enhances the thickness of the cutting edge, that is, enhances the strength of the cutting edge, and can be used for cutting harder workpieces.

[0029] Further, a gasket is also fixed between the blade and the blade mounting surface.

[0030] During installation, a gasket is also provided between the blade and the tool mounting surface of the notch. The gasket is used to adjust the blade angle. Different gaskets are required to adjust the blade angle for threading with different diameters. On the other hand, since the hardness of the blade is much higher than that of the tool holder, if the blade and the tool holder are in direct contact, the tool holder is easily worn and the accuracy will quickly deteriorate. Therefore, a tool pad should also be provided from the perspective of wear resistance. The tool pad with a tapping tip needs to adjust different angles according to the size of the workpiece being processed, while the ordinary turning blade does not need to be adjusted and always uses one.

[0031] The present invention has the following beneficial effects:

[0032] The processing method, application, finish turning and tapping tool for adjacent processes of the revolving surface of the present invention arrange the two tool tips used in two adjacent processes side by side on the same blade. Specifically, the tool tips of the two adjacent processes of finish turning and tapping are arranged side by side on the same blade. During processing, the finish turning tool tip is located in front of the tapping tool tip, and the finish turning and tapping processes are performed together. There is a height difference between the finish turning tool tip and the tapping tool tip, and the height difference between the finish turning tool tip and the tapping tool tip is equal to the depth of the thread. In the prior art, two processes require two types of blades to be clamped twice, tool set twice and processed twice. After the two tool tips of the present application are combined, only one type of blade is needed for one clamping, one tool setting and one processing, that is, the finish turning and tapping processes are carried out simultaneously. Compared with the step-by-step completion in the prior art, the production efficiency is greatly improved. The errors caused by re-clamping and re-tool setting are avoided, and there is no error caused by re-selecting the tool due to shape change, greatly increasing the machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached

[0034] In the figures:

[0035] Figure 1 is a schematic structural diagram of an indexable insert with 8 tool tips;

[0036] Figure 2 is a schematic structural diagram of an indexable insert with 16 tool tips;

[0037] Figure 3 is a schematic structural diagram of a finish machining blade with three tool tips in the prior art;

[0038] Figure 4 is a schematic structural diagram of a tapping blade with three tool tips in the prior art;

[0039] Figure 5 is a partial view of the tool tip part of the finish turning and tapping integrated tool of the present invention;

[0040] Figure 6 is a schematic structural diagram of the finish turning and tapping integrated tool of the present invention;

[0041] Figure 7 is a schematic structural diagram of the blade of the finish turning and tapping integrated tool of the present invention;

[0042] Figure 8 is a diagram of the position of the finish turning and tapping integrated tool of the present invention and the workpiece;

[0043] Figure 9This is the diagram of the blade and notch positions of the present invention.

[0044] Serial numbers are: 1 - blade, 11 - fine turning tip, 12 - tapping tip, 13 - body, 14 - arc transition, 15 - screw hole, 16 - positioning surface, 17 - chip breaker groove, 18 - land, 2 - tool holder, 21 - notch, 3 - workpiece. Specific embodiments

[0045] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0046] Embodiment 1

[0047] A machining method for adjacent processes of a rotary surface, in which two tips used in two adjacent processes are arranged side by side on the same blade, and the tip of the previous process is located in front of the tip of the next process, so that the two adjacent processes are carried out simultaneously to machine the rotary surface.

[0048] The tips of the first process and the second process are arranged side by side. When machining the rotary surface, the two tips act on the rotary surface simultaneously, so that the two adjacent processes are completed simultaneously. This avoids the errors caused by tool change, tool selection, and tool setting between the two processes, saves the time for tool change, tool selection, and tool setting. Most importantly, the two processes are completed simultaneously, greatly improving the production efficiency.

[0049] The tips of two adjacent processes are connected by an arc transition, and a clearance design is made between the arc transition and the workpiece, that is, there is a gap between the arc transition and the workpiece to avoid interference with the workpiece.

[0050] A tool generally includes a rear tool holder and a blade. After the two tips are combined, the position of the blade on the tool holder also needs to be increased correspondingly so that the blade is accommodated in the installation position and the tip does not contact the installation position.

[0051] Embodiment 2

[0052] As Figure 5 shown, this embodiment provides a specific application of the method described in Embodiment 1, specifically: a machining method for fine turning and tapping. The fine turning tip 11 used for fine turning and the tapping tip 12 used for tapping are arranged side by side on the same blade, and the fine turning tip is located in front of the tapping tip, and the fine turning and tapping processes are carried out simultaneously.

[0053] When performing finish machining and tapping on a rotary surface in the prior art, finish machining is carried out first and then tapping. The two processes are carried out step by step. After finish machining, a suitable tapping tool is selected for clamping and tool setting, which takes a certain amount of time. Re-clamping, selecting the tool shape, and tool setting also bring machining errors. However, by using the method described in this embodiment, it is only necessary to clamp once, select the tool once, and perform tool setting once, avoiding the above-mentioned machining errors and achieving higher machining accuracy. Two tool tips are installed together, and one blade has two functional tool tips, which is more economical. The two processes are carried out simultaneously, greatly improving the production efficiency.

[0054] As Figure 5 shown, there is an arc transition connection between the finish turning tool tip 11 and the tapping tool tip 12, and a relief design is made between the arc transition and the workpiece, that is, there is a gap between the arc transition and the workpiece to avoid interference with the workpiece.

[0055] A tool generally includes a rear tool holder and a blade. After the finish turning tool tip 11 and the tapping tool tip 12 are combined, the position of the blade on the tool holder also needs to be increased correspondingly so that the blade can be accommodated in the installation position, and the combined tool tip does not contact the installation position.

[0056] Embodiment 3

[0057] This embodiment provides a finish turning and tapping integrated tool for implementing the methods described in Embodiment 1 and Embodiment 2. As Figure 6 shown, it includes a blade 1 and a tool holder 2. As Figure 5 shown, the blade 1 includes a body 13 and a tool tip. The tool tip includes the finish turning tool tip 11 and the tapping tool tip 12; the finish turning tool tip 11 and the tapping tool tip 12 are arranged side by side on the same blade 1, and the finish turning tool tip 11 is located in front of the tapping tool tip 12; there is a height difference between the finish turning tool tip 11 and the tapping tool tip 12, and the height difference between the finish turning tool tip 11 and the tapping tool tip 12 is equal to the depth of the thread.

[0058] As Figure 3 and Figure 4As shown, they are respectively the fine turning tip and the tapping tip of the prior art. When the prior art performs thread machining, after first performing fine machining on the rotating surface, tapping is then carried out. Therefore, the tapping tip 12 described in the present application is longer than the fine turning tip 11 to ensure the depth of the thread. In the prior art, two processes require two types of inserts to be clamped twice, tool set twice, and two machining operations to be completed. After the two tips of the present application are combined together, only one type of insert is needed, with one clamping, one tool setting, and one machining operation to be completed, that is, the fine turning and tapping processes are carried out simultaneously. Compared with the step-by-step completion of the prior art, the production efficiency is greatly improved. The errors caused by re-clamping and re-tool setting are avoided, and there is also no error caused by re-selecting the tool due to shape change, greatly increasing the machining accuracy. Structurally speaking, when an ordinary tip is in use, only the cutting edge on one side of the tip is in use, and the other side does not contact the workpiece and mainly serves to increase strength. The fine turning tip 11 and the tapping tip 12 of the present application are combined together, and they both contact the workpiece, and also play a role of supporting each other to increase strength during machining.

[0059] The distance between the fine turning tip 11 and the tapping tip 12 is between 0.5 and 2 pitches. The fine turning tip 11 and the tapping tip 12 are connected by an arc transition, and the diameter of the arc is 0.1 - 0.2 mm.

[0060] There is a relief design between the fine turning tip 11 and the tapping tip 12, that is, during machining, there is a gap between the arc transition 14 and the workpiece. There is an arc transition 14 between the fine turning tip 11 and the tapping tip 12, and interference with the workpiece cannot occur during machining. Therefore, the arc transition 14 has a relief design.

[0061] The insert 1 is a indexable insert, and each tip of the indexable insert includes the fine turning tip 11 and the tapping tip 12. As Figure 7 shown, the body 13 has a triangular structure, and the inserts at each corner contain the fine turning tip 11 and the tapping tip 12. A screw hole 15 for installing a screw is provided in the middle of the body 13, and the three corners are evenly distributed at 120 degrees according to the axis of the screw hole 15.

[0062] As Figure 9 shown, a notch 21 is opened at the end of the tool shank 2, and a blade mounting surface is provided at the notch 21. The insert 1 is mounted in the notch 21; for the insert 1 with a triangular structure, the positioning surfaces 16 are between two corners, and the shape of the notch 21 is adapted to the shape of the insert, and two of the positioning surfaces 16 contact the inner wall of the notch 21; the tip does not contact the inner wall of the notch 21. A relief design should be made between the tip and the inner wall of the notch 21 to avoid damaging the tip.

[0063] The fine turning tip 11, the tapping tip 12 and the body 13 are of an integral structure.

[0064] The cutting edge of the fine turning tip 11 and the cutting edge of the tapping tip 12 are on the same horizontal plane.

[0065] Chip-breaking grooves 17 are respectively formed on the rake faces of the fine turning tip 11 and the tapping tip 12 (the chip-breaking groove of the tapping tip is not shown).

[0066] A land 18 is further provided at the transition between the rake face and the flank face of the fine turning tip 11. The land 18 increases the thickness of the cutting edge, that is, enhances the strength of the cutting edge, and can be used for cutting harder workpieces.

[0067] A shim is also fixed between the blade 1 and the blade mounting surface.

[0068] In the first patent in the background art, by combining the external turning tool and the sealing surface tool into one, one tool can be used to machine both the outer circle of the product and the end face and sealing surface of the product. It can be seen from its drawings that the tool includes two tool heads. It should be noted that there are two blades (not two tips) provided on the tool shank. Although the number of clamping times is reduced, when machining the second process, tool changing and tool setting are still required, and the two processes are completed independently. This embodiment is different from this patent. The tool in this embodiment has one blade on the tool shank, and one tip on the blade includes two tips, namely the fine turning tip 11 and the tapping tip 12, and the two processes are completed simultaneously, not step by step. The second patent in the background art, like the first patent, has more tool heads, and only increases the cost performance of the tool. The first and second patents in the background art are actually a kind of indexable blade. To complete one process, for the next process, the tool position needs to be changed and a different blade or tip is used for machining. Their multiple tips are arranged vertically, similar to the indexable blade structure of Figure 1 、 Figure 2 This embodiment is most different from the three patents in the background art in that the two processes are completed simultaneously. By arranging the two tips side by side at one tip of the original structure of the blade, with the fine turning tip 11 in front of the tapping tip 12, the work that originally required two clampings, two tool settings, and two machining operations can be completed with one clamping, one tool setting, and one machining operation. The structure is different, and the machining efficiency, machining accuracy are higher, and the economy is better.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the present invention.

Claims

1. A method for machining adjacent processes of a rotary surface, characterized in that: The two tool tips used in two adjacent processes are arranged side by side on the same blade, and the tool tip of the previous process is located in front of the tool tip of the next process, so that the two adjacent processes can process the rotating surface at the same time.

2. A finishing and tapping method, characterized in that: The finishing tool tip used for finishing turning and the tapping tool tip used for tapping are arranged side by side on the same blade, the finishing tool tip is located in front of the tapping tool tip, and the finishing turning and tapping processes are carried out simultaneously.

3. A fine turning and tapping integrated tool used in the fine turning and tapping processing method according to claim 2, comprising a blade and a tool handle, wherein the blade comprises a body and a tool tip, and is characterized in that: The tool tip includes the finishing tool tip and the tapping tool tip; the finishing tool tip and the tapping tool tip are arranged side by side on the same blade, and the finishing tool tip is located in front of the tapping tool tip; there is a height difference between the finishing tool tip and the tapping tool tip, and the height difference between the finishing tool tip and the tapping tool tip is equal to the depth of the thread.

4. The integrated finishing and tapping tool according to claim 3, characterized in that: The distance between the finishing tool tip and the tapping tool tip is between 0.5 and 2 thread pitches.

5. The integrated finishing and tapping tool according to claim 3, characterized in that: The finishing tool tip and the tapping tool tip are connected by an arc transition, and the diameter of the arc is 0.1-0.2 mm.

6. The integrated finishing and tapping tool according to claim 5, characterized in that: There is a clearance design between the finishing tool tip and the tapping tool tip, that is, during processing, there is a gap between the arc transition and the workpiece.

7. The integrated finishing and tapping tool according to claim 3, characterized in that: The blade is an indexable blade, and each blade tip of the indexable blade includes the finishing tool tip and the tapping tool tip.

8. The integrated finishing and tapping tool according to claim 7, characterized in that: The body is triangular in structure, and the blade at each corner contains the finishing tool tip and the tapping tool tip. A screw hole for mounting screws is provided in the middle of the body, and the three corners are evenly distributed at 120 degrees according to the axis of the screw hole.

9. The integrated finishing and tapping tool according to claim 3, characterized in that: The finishing tool tip, the tapping tool tip and the body are an integrated structure.

10. The integrated finishing and tapping tool according to claim 3, characterized in that: The cutting edge of the finishing tool tip and the cutting edge of the tapping tool tip are on the same horizontal plane.

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