Combined tool

Abstract

The utility model relates to a combined cutter which comprises a drill bushing, a cutter bar, a first disc cutter, a second disc cutter, a first positioning spacer bush, a second positioning spacer bush, a locking piece and a screw tap. The drill bushing is provided with an axially through inner cavity; the first end of the cutter bar is mounted in the drill bushing; the first disc cutter and the second disc cutter are respectively sleeved on the cutter bar; the first disc cutter and the second disc cutter are configured to rotate along with the cutter bar; the cutter bar is sleeved with the first positioning spacer bush, and the end, away from the drill bushing, of the first positioning spacer bush abuts against the first disc cutter; the cutter bar is sleeved with the second positioning spacer bush, and the second positioning spacer bush is connected between the first disc cutter and the second disc cutter in an abutting mode; the axial length of the first positioning spacer bush and the axial length of the second positioning spacer bush are respectively matched with the axial distance between the first disc cutter and the second disc cutter; the locking piece is arranged on the cutter bar in a sleeving mode and fixedly connected with the second end of the cutter bar. The screw tap is installed at the second end of the cutter bar in the axial direction of the cutter bar. And the screw tap is configured to do vertical linear motion along with the cutter bar.

Description

Technical Field

[0001] The present application relates to the technical field of parts processing, and in particular to a combined tool. Background Art

[0002] In the process of mechanical processing, we often use a large number of various auxiliary processing combination tools to improve production efficiency and processing quality.

[0003] As the demand for processing polygonal workpieces increases in actual production, when milling polygonal workpieces, the workpiece is clamped with a chuck, and the workpiece angle is adjusted multiple times. The milling process is repeated multiple times to complete the processing of the entire polygonal workpiece. In order to ensure the shape quality of the polygon during the entire processing process, the angle needs to be adjusted strictly and accurately each time the dividing head is adjusted. The operation is cumbersome and difficult to cope with large-scale processing needs. The production efficiency is low and the labor cost is high. In addition, tapping operations are also required in the processing of polygonal workpieces. At present, manual tapping racks are mostly used for tapping by manpower. Not only is the processing efficiency low, but it is also difficult to control the processing quality. Obviously, it is difficult to adapt to current processing needs. Summary of the invention

[0004] Based on this, it is necessary to provide a combined tool for the problem of how to improve the processing efficiency of polygonal parts.

[0005] The present application provides a combined tool, comprising:

[0006] A drill sleeve, wherein the drill sleeve has an inner cavity extending axially therethrough;

[0007] A cutter bar, a first end of which is mounted in the inner cavity of the drill sleeve;

[0008] A first disc knife and a second disc knife, wherein the first disc knife and the second disc knife are respectively mounted at different positions of the knife rod; the first disc knife and the second disc knife are configured to perform synchronous rotational motion with the knife rod;

[0009] A first positioning sleeve, which is sleeved on the cutter bar, and one end of the first positioning sleeve away from the drill sleeve abuts against the first disc cutter;

[0010] A second positioning sleeve is sleeved on the cutter bar, and the second positioning sleeve abuts between the first disc cutter and the second disc cutter; the axial length of the first positioning sleeve and the axial length of the second positioning sleeve are respectively matched with the axial distance between the first disc cutter and the second disc cutter;

[0011] A locking member, the locking member is sleeved on the knife rod, and the locking member is fixedly connected to the second end of the knife rod;

[0012] A tap is installed at the second end of the tool rod along the axial direction of the tool rod; the tap is configured to perform vertical linear motion with the tool rod.

[0013] In one of the embodiments, the second positioning spacer includes a plurality of sub-spacers sleeved on the cutter rod, and the sub-spacers located at the ends of the plurality of sub-spacers respectively abut against the first disc cutter and the second disc cutter.

[0014] In one embodiment, the axial lengths of the sub-spacers are different and / or the axial lengths of the sub-spacers are the same.

[0015] In one embodiment, the axial length of the second positioning sleeve increases with the increase of the axial distance between the first disc cutter and the second disc cutter, and the axial length of the first positioning sleeve decreases with the increase of the axial distance between the first disc cutter and the second disc cutter; or, the axial length of the second positioning sleeve decreases with the decrease of the axial distance between the first disc cutter and the second disc cutter, and the axial length of the first positioning sleeve increases with the decrease of the axial distance between the first disc cutter and the second disc cutter.

[0016] In one embodiment, the first positioning spacer comprises:

[0017] A first spacer sleeve section, which is sleeved on the knife rod, and the first spacer sleeve section and the knife rod are fixedly connected;

[0018] The second spacer sleeve section is sleeved on the knife rod, and the second spacer sleeve section is abutted between the first spacer sleeve section and the first disc knife.

[0019] In one embodiment, the first spacer segment is integrally formed with the knife rod.

[0020] In one embodiment, it also includes:

[0021] The third positioning sleeve is sleeved on the knife rod, and the third positioning sleeve abuts between the second disc knife and the locking member.

[0022] In one embodiment, the locking member is connected to the knife rod via threads.

[0023] In one embodiment, the first disc cutter and the second disc cutter rotate along with the cutter rod to process the workpiece mounted on the rotary indexing plate to obtain a polygonal workpiece.

[0024] In one embodiment, the polygonal workpiece is one or more of a square workpiece, a hexagonal workpiece, and an octagonal workpiece.

[0025] The combination tool provided in this embodiment can simultaneously complete milling and tapping without replacing the tool, thereby improving the efficiency of milling and tapping of polygonal parts. It can also meet the processing needs of polygonal parts of different sizes by adjusting the first positioning sleeve and the second positioning sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional structural schematic diagram of a combined tool provided in one embodiment of the present application is shown.

[0027] Figure 2 A schematic diagram of the main structure of a combined tool provided in one embodiment of the present application is shown.

[0028] Figure 3 A schematic diagram of the three-dimensional structure of a tool rod and a first positioning spacer sleeve in a combined tool provided in an embodiment of the present application is shown.

[0029] Figure 4 A schematic diagram of the exploded structure of a combined tool provided in one embodiment of the present application is shown.

[0030] Figure Number:

[0031] 10- knife bar;

[0032] 11-tap mounting hole;

[0033] 12-connecting thread;

[0034] 20-First plate of knives;

[0035] 30-Second plate of knives;

[0036] 40-first positioning spacer;

[0037] 41- first spacer section;

[0038] 42-second spacer section;

[0039] 50- second positioning spacer;

[0040] 51-sub-spacer;

[0041] 60-locking piece;

[0042] 70-tap;

[0043] 80-The third positioning spacer. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 on the present application.

[0046] In addition, if the terms "first" or "second" appear, these terms 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0050] In actual production, the processing volume of polygonal parts is increasing. Currently, they can be milled by end mills on vertical milling machines. However, this process requires multiple adjustments to the workpiece angle and repeated milling to complete the processing of the entire polygonal workpiece. The operation is cumbersome, difficult to cope with large-scale processing needs, low production efficiency, and high labor costs. In addition, polygonal parts processing can also be completed on a lathe, but this processing method requires the tool to be installed on the lathe spindle and the workpiece to be fixed on the tool holder. This layout makes the workpiece prone to collapse due to excessive force during processing, and the processing safety is not ideal. It is also easy to cause damage to the tool holder.

[0051] See also Figures 1 to 4 As shown, Figure 1 FIG. 1 shows a three-dimensional structural diagram of a combined tool provided in an embodiment of the present application. Figure 2 The main structural diagram of the combined tool provided in one embodiment of the present application is shown. Figure 3 The figure shows a three-dimensional structural diagram of a tool bar and a first positioning sleeve in a combined tool provided in an embodiment of the present application. Figure 4An exploded structural schematic diagram of a combination tool provided by an embodiment of the present application is shown. The combination tool provided by an embodiment of the present application includes: a drill sleeve, a tool rod 10, a first disc cutter 20, a second disc cutter 30, a first positioning spacer 40, a second positioning spacer 50, a locking piece 60 and a tap 70. The drill sleeve is mounted on the spindle of a vertical milling machine, where the spindle of the vertical milling machine is arranged in a vertical direction; the drill sleeve has an axially through-going inner cavity; the first end of the tool rod 10 is mounted in the inner cavity of the drill sleeve; the first disc cutter 20 and the second disc cutter 30 are respectively mounted on different positions of the tool rod 10; the first disc cutter 20 and the second disc cutter 30 are configured to perform synchronous rotational motion with the tool rod 10; the first positioning spacer 40 is mounted on the tool rod 10, and one end of the first positioning spacer 40 away from the drill sleeve abuts against the first disc cutter 20; the second positioning spacer 50 is mounted on the tool rod 10, The second positioning sleeve 50 abuts between the first disc cutter 20 and the second disc cutter 30; the axial length of the first positioning sleeve 40 and the axial length of the second positioning sleeve 50 respectively cooperate with the axial distance between the first disc cutter 20 and the second disc cutter 30; the locking piece 60 is sleeved on the tool rod 10, and the locking piece 60 is fixedly connected to the second end of the tool rod 10; the tap 70 is installed in the tap 70 mounting hole 11 opened at the second end of the tool rod 10 along the axial direction of the tool rod 10; the tap 70 is configured to perform vertical linear motion with the tool rod 10.

[0052] The combination tool provided in this embodiment can be used for both vertical milling machines and drilling machines. It can complete milling and tapping processes without replacing the tool, thereby improving the efficiency of milling and tapping processes of polygonal parts. It can also meet the processing needs of polygonal parts of different sizes by adjusting the first positioning spacer 40 and the second positioning spacer 50.

[0053] In the milling process involved in this embodiment, the workpiece is first mounted on a rotating indexing disk, and then the first disc cutter 20 and the second disc cutter 30 on the tool bar 10 are driven by the spindle of the vertical milling machine to move to the target position (the target position here can be understood as the initial position to be milled on the workpiece), and then the spindle of the vertical milling machine starts to rotate and drives the tool bar 10 to rotate with it through the drill sleeve, and then the first disc cutter 20 and the second disc cutter 30 rotate with the tool bar 10, and the first disc cutter 20 and the second disc cutter 30 can simultaneously perform milling processing on two sides of the polygonal workpiece, reducing the number of times the workpiece angle is adjusted and the number of times the milling cutter is fed during the milling process of the polygonal part, and improving the efficiency of the milling processing of the polygonal part. It should be noted that the first disc cutter 20 and the second disc cutter 30 have the same specifications, and the teeth of the first disc cutter 20 and the second disc cutter 30 are generally on the circumference and the end face, and the cutting edge on the end face is generally a secondary cutting edge. In this embodiment, the first disc cutter 20 and the second disc cutter 30 have a large feed rate and a large cutting depth during processing, and are more suitable for vertical finishing along the axial direction of the main shaft of the vertical milling machine.

[0054] In the tapping process involved in this embodiment, first ensure that the tap 70 is coaxially installed on the lower end of the tool bar 10, and then the vertical milling machine's spindle drives the tap 70 on the tool bar 10 to move to a position where the central axis of the tap 70 is relatively positive with the target position to be tapped on the workpiece, and the spindle of the drilling machine (or vertical milling machine) starts to rotate and drives the tool bar 10 to rotate with it through the drill sleeve, and then the tap 70 rotates with the tool bar 10, and axial feed is provided at the same time, so that the tap 70 is screwed into the workpiece to obtain an internal thread. In this embodiment, by installing the tap 70 on the tool bar 10, the tapping process can be completed on the drilling machine (or vertical milling machine), and manual tapping is no longer required, which greatly improves the processing accuracy and processing efficiency.

[0055] In one embodiment of the present application, the axial length of the second positioning sleeve 50 increases with the increase of the axial distance between the first disc cutter 20 and the second disc cutter 30, and the axial length of the first positioning sleeve 40 decreases with the increase of the axial distance between the first disc cutter 20 and the second disc cutter 30. The axial distance between the first disc cutter 20 and the second disc cutter 30 in the combined tool can be adjusted by the cooperation of the first positioning sleeve 40 and the second positioning sleeve 50 to meet the processing needs of polygonal workpieces of more sizes.

[0056] In one embodiment of the present application, the axial length of the second positioning sleeve 50 decreases as the axial distance between the first disc cutter 20 and the second disc cutter 30 decreases, and the axial length of the first positioning sleeve 40 increases as the axial distance between the first disc cutter 20 and the second disc cutter 30 decreases. The axial distance between the first disc cutter 20 and the second disc cutter 30 in the combined tool can be adjusted by the cooperation of the first positioning sleeve 40 and the second positioning sleeve 50 to meet the processing needs of polygonal workpieces of more sizes.

[0057] In one embodiment, the second positioning spacer 50 includes a plurality of sub-spacers 51 sleeved on the tool rod 10, and the sub-spacers 51 located at the ends of the plurality of sub-spacers 51 respectively abut against the first disc cutter 20 and the second disc cutter 30. When polygonal parts of different sizes need to be processed, the distance between the first disc cutter 20 and the second disc cutter 30 can be adjusted by adjusting the arrangement of the sub-spacers 51.

[0058] In an optional embodiment, the axial lengths of the sub-spacers 51 are different. In this embodiment, when the size of the polygonal part to be processed changes, there is no specific limitation on the number of sub-spacers 51 to be arranged, and it is only necessary to meet the axial length of the arranged sub-spacers 51 to match the distance between the first disc cutter 20 and the second disc cutter 30.

[0059] Specifically, as the size of the polygonal part to be processed decreases, the sum of the axial lengths of the plurality of sub-spacers 51 can be reduced to reduce the distance between the first disc cutter 20 and the second disc cutter 30. Accordingly, the axial length of the first positioning spacer 40 increases to ensure that the first disc cutter 20 can stably abut against the first positioning spacer 40.

[0060] Specifically, as the size of the polygonal part to be processed increases, the sum of the axial lengths of the plurality of sub-spacers 51 can be increased to reduce the increase between the first disc cutter 20 and the second disc cutter 30. Accordingly, the axial length of the first positioning spacer 40 is reduced to ensure that the first disc cutter 20 can stably abut against the first positioning spacer 40.

[0061] In an optional embodiment, the axial lengths of the sub-spacers 51 are the same. In this embodiment, when the size of the polygonal part to be processed changes, the number of sub-spacers 51 can be adjusted so that the axial lengths of the sub-spacers 51 can match the distance between the first disc cutter 20 and the second disc cutter 30.

[0062] Specifically, as the size of the polygonal part to be processed decreases, the number of sub-spacers 51 can be reduced to reduce the distance between the first disc cutter 20 and the second disc cutter 30. Accordingly, the axial length of the first positioning spacer 40 increases to ensure that the first disc cutter 20 can stably abut against the first positioning spacer 40.

[0063] Specifically, as the size of the polygonal part to be processed increases, the number of sub-spacers 51 can be increased to increase the distance between the first disc cutter 20 and the second disc cutter 30. Accordingly, the axial length of the first positioning spacer 40 is reduced to ensure that the first disc cutter 20 can stably abut against the first positioning spacer 40.

[0064] In an optional embodiment, the plurality of sub-spacers 51 may be configured with a plurality of sub-spacers 51 having different axial lengths and a plurality of sub-spacers 51 having the same axial length.

[0065] Specifically, when the size of the polygonal part to be processed is reduced, it is first necessary to ensure that the sum of the axial lengths of the plurality of sub-spacers 51 is reduced to reduce the distance between the first disc cutter 20 and the second disc cutter 30. Further, the number of arranged sub-spacers 51 can be adjusted (such as increasing the number of sub-spacers 51 with a small axial length or reducing the number of sub-spacers 51 with a large axial length) so that the axial length of the arranged sub-spacers 51 can match the distance between the first disc cutter 20 and the second disc cutter 30. Accordingly, the axial length of the first positioning spacer 40 is increased to ensure that the first disc cutter 20 can stably abut against the first positioning spacer 40.

[0066] Specifically, when the size of the polygonal part to be processed increases, it is first necessary to ensure that the sum of the axial lengths of the multiple sub-spacers 51 is increased to increase the distance between the first disc cutter 20 and the second disc cutter 30. Further, the number of arranged sub-spacers 51 can be adjusted (such as reducing the sub-spacers 51 with a small axial length or increasing the sub-spacers 51 with a large axial length) so that the axial length of the arranged sub-spacers 51 can match the distance between the first disc cutter 20 and the second disc cutter 30. Accordingly, the axial length of the first positioning spacer 40 is reduced to ensure that the first disc cutter 20 can stably abut against the first positioning spacer 40.

[0067] In one embodiment, the first positioning sleeve 40 includes: a first sleeve segment 41 and a second sleeve segment 42. The first sleeve segment 41 is sleeved on the tool bar 10, and the first sleeve segment 41 and the tool bar 10 are fixedly connected; the second sleeve segment 42 is sleeved on the tool bar 10, and the second sleeve segment 42 abuts between the first sleeve segment 41 and the first disc cutter 20. It should be briefly explained here that when the combined tool is installed on the spindle of the vertical milling machine, the first sleeve segment 41 and the second sleeve segment 42 are both located at the upper end of the tool bar 10, and the first sleeve segment 41 is located above the second sleeve segment 42, and the first shaft sleeve segment is fixedly connected to the tool bar 10 to ensure the positioning above the combined tool. Among them, the first sleeve segment 41 can be integrally formed with the tool bar 10. The axial distance between the first disc cutter 20 and the second disc cutter 30 in the combined tool can be adjusted by the cooperation of the second sleeve segment 42 of the first positioning sleeve 40 and the second positioning sleeve 50 to meet the processing needs of polygonal workpieces of more sizes.

[0068] Specifically, when the size of the polygonal part to be processed decreases, the axial distance between the first disc cutter 20 and the second disc cutter 30 can be reduced, and the axial length of the corresponding second positioning spacer 50 is reduced, while the axial length of the second spacer segment 42 is relatively increased.

[0069] Specifically, when the size of the polygonal part to be processed increases, the axial distance between the first disc cutter 20 and the second disc cutter 30 can be increased, and the axial length of the corresponding second positioning spacer 50 increases, while the axial length of the second spacer segment 42 decreases relatively.

[0070] It should be briefly explained here that when the combined tool is installed on the spindle of the vertical milling machine, the locking member 60 is located at the lower end of the tool bar 10, and the locking member 60 is mainly used to ensure the positioning of the lower part of the combined tool. The locking member 60 is threadedly connected with the connecting thread 12 on the tool bar 10. Specifically, the locking member 60 can be a nut.

[0071] In one embodiment, the tool further comprises: a third positioning sleeve 80. The third positioning sleeve 80 is sleeved on the tool bar 10, and the third positioning sleeve 80 abuts between the second disc cutter 30 and the locking member 60. The axial distance between the first disc cutter 20 and the second disc cutter 30 in the combined tool can also be adjusted through the cooperation of the third positioning sleeve 80 and the second positioning sleeve 50 to meet the processing needs of polygonal workpieces of more sizes.

[0072] Specifically, when the size of the polygonal part to be processed decreases, the axial distance between the first disc cutter 20 and the second disc cutter 30 can be reduced, and the axial length of the corresponding second positioning spacer 50 is reduced, while the axial length of the third positioning spacer 80 is relatively increased.

[0073] Specifically, when the size of the polygonal part to be processed increases, the axial distance between the first disc cutter 20 and the second disc cutter 30 can be increased, and the axial length of the corresponding second positioning spacer 50 increases, while the axial length of the third positioning spacer 80 decreases relatively.

[0074] It should be noted that the polygonal workpiece mentioned above may be one or more of a tetragonal workpiece, a hexagonal workpiece, and an octagonal workpiece.

[0075] 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.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A combined tool, characterized in that: include: A drill sleeve, wherein the drill sleeve has an inner cavity extending axially therethrough; A cutter bar, a first end of which is mounted in the inner cavity of the drill sleeve; A first disc knife and a second disc knife, wherein the first disc knife and the second disc knife are mounted at different positions of the knife rod; the first disc knife and the second disc knife are configured to perform synchronous rotational motion with the knife rod; A first positioning sleeve, which is sleeved on the cutter bar, and one end of the first positioning sleeve away from the drill sleeve abuts against the first disc cutter; A second positioning sleeve is sleeved on the cutter bar, and the second positioning sleeve abuts between the first disc cutter and the second disc cutter; the axial length of the first positioning sleeve and the axial length of the second positioning sleeve are respectively matched with the axial distance between the first disc cutter and the second disc cutter; A locking member, the locking member is sleeved on the knife rod, and the locking member is fixedly connected to the second end of the knife rod; A tap is installed at the second end of the tool rod along the axial direction of the tool rod; the tap is configured to perform vertical linear motion with the tool rod.

2. The combined tool according to claim 1, characterized in that: The second positioning spacer includes a plurality of sub-spacers sleeved on the cutter rod, and the sub-spacers located at the ends of the plurality of sub-spacers are respectively in contact with the first disc cutter and the second disc cutter.

3. The combined tool according to claim 2, characterized in that: The axial lengths of the sub-spacers are different and / or the axial lengths of the sub-spacers are the same.

4. The combined tool according to claim 1, characterized in that: The axial length of the second positioning sleeve increases with the increase of the axial distance between the first disc cutter and the second disc cutter, and the axial length of the first positioning sleeve decreases with the increase of the axial distance between the first disc cutter and the second disc cutter; or, the axial length of the second positioning sleeve decreases with the decrease of the axial distance between the first disc cutter and the second disc cutter, and the axial length of the first positioning sleeve increases with the decrease of the axial distance between the first disc cutter and the second disc cutter.

5. The combined tool according to claim 1, characterized in that: The first positioning spacer comprises: A first spacer sleeve section, which is sleeved on the knife rod, and the first spacer sleeve section and the knife rod are fixedly connected; The second spacer sleeve section is sleeved on the knife rod, and the second spacer sleeve section is abutted between the first spacer sleeve section and the first disc knife.

6. The combined tool according to claim 5, characterized in that: The first spacer sleeve section is integrally formed with the knife rod.

7. The combined tool according to claim 1, characterized in that: Also includes: The third positioning sleeve is sleeved on the knife rod, and the third positioning sleeve abuts between the second disc knife and the locking member.

8. The combined tool according to claim 7, characterized in that: The locking piece is connected to the knife rod via threads.

9. The combined tool according to any one of claims 1 to 8, characterized in that: The first disc cutter and the second disc cutter rotate along with the cutter rod to process the workpiece mounted on the rotary indexing disc to obtain a polygonal workpiece.

10. The combined tool according to claim 9, characterized in that: The polygonal workpiece is one or more of a tetragonal workpiece, a hexagonal workpiece, and an octagonal workpiece.

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