cutter

Abstract

The application provides a cutter, comprising a cutter base, a cutter rod, a transmission shaft, a cutter handle, a milling cutter head and a transmission part; the cutter rod is connected with the cutter base, the transmission shaft is rotationally arranged in the cutter rod, the transmission shaft has a first end and a second end penetrating through both sides of the cutter rod, the cutter handle is connected with the first end, and the cutter handle is configured to be connected with a machine tool spindle; the milling cutter head is rotationally arranged at one end of the cutter rod, the cutter rod has a clearance slot, the milling cutter head has annularly arranged cutting edges, part of the cutting edges penetrate through the clearance slot in the radial direction of the cutter rod, the transmission part is arranged between the milling cutter head and the second end, and the transmission part is configured to drive the milling cutter head to rotate when the transmission shaft rotates. The application can groove a tubular workpiece with a small hole diameter.

Description

Technical Field

[0001] This application relates to the technical field of milling tools, and more particularly to a cutting tool. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, each cutting tooth sequentially and intermittently removes the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces.

[0003] When machining the keyway inside a tubular workpiece, an angle head is usually used in conjunction with a milling cutter to enter from the inner diameter of the tubular workpiece and then perform milling. At this time, the rotation center line of the angle head is perpendicular to the keyway.

[0004] When using an angle head with a milling cutter, it is necessary to ensure that the inner diameter of the tubular workpiece has sufficient feed space. In other words, the inner radius of the tubular workpiece should be greater than the sum of the thickness of the angle head tool's rotation center line and the tool length. However, when machining some small-diameter tubular workpieces, there may be insufficient feed space for the small-space tubular workpiece, making it impossible to machine keyways on the small-diameter tubular workpiece. Summary of the Invention

[0005] This application provides a cutting tool to solve the problem that using an angle head in conjunction with a milling cutter cannot perform keyway machining on tubular workpieces with small diameter holes.

[0006] This application provides a cutting tool, including a tool holder, a tool shank, a drive shaft, a tool shank, a milling cutter head, and a transmission component;

[0007] The tool holder is connected to the tool support, and the drive shaft is rotatably installed inside the tool holder. The drive shaft has a first end and a second end that pass through both sides of the tool holder. The tool shank is connected to the first end and is configured to be connected to the machine tool spindle.

[0008] The milling cutter head is rotatably mounted at one end of the tool holder, and the tool holder has a relief groove. The milling cutter head has annularly arranged cutting edges, and part of the cutting edges pass through the relief groove along the radial direction of the tool holder. The transmission component is located between the milling cutter head and the second end. The transmission component is configured to drive the milling cutter head to rotate when the transmission shaft rotates.

[0009] In one possible implementation, the cutting tool provided in this application has a drive pin as the transmission component. One end of the drive pin is connected to a second end, and the other end of the drive pin has a worm groove. The milling cutter head has a worm gear ring tooth. The worm groove meshes with the worm gear ring tooth. The drive pin is configured such that when it rotates with the drive shaft, it drives the worm gear ring tooth to rotate through the worm groove, thereby driving the milling cutter head to rotate.

[0010] In one possible implementation, the cutting tool provided in this application has a mounting hole at its second end along its axial direction, and a drive pin is inserted into the mounting hole.

[0011] In one possible implementation, the cutting tool provided in this application has a tooth tip of the turbine ring tooth that is away from the center as the cutting edge.

[0012] In one possible implementation, the cutting tool provided in this application further includes a guide bushing, which is sleeved on one end of the tool holder. The guide bushing has a relief groove that is directly opposite the relief groove. The guide bushing is configured to abut against the inner wall of the workpiece when the tool holder and the milling cutter head extend into the inner hole of the workpiece.

[0013] In one possible implementation, the cutting tool provided in this application has a fastener on the guide bushing, and the guide bushing is connected to the tool holder by the fastener.

[0014] In one possible implementation, the cutting tool provided in this application further includes an anti-rotation device mounted on the tool holder, which is configured to limit the rotation of the tool holder.

[0015] In one possible implementation, the anti-rotation device of the cutting tool provided in this application includes an anti-rotation guide sleeve, a positioning pin, a support spring, and an anti-rotation rod;

[0016] The anti-rotation guide sleeve is connected to the tool holder, the positioning pin is slidably set in the anti-rotation guide sleeve, the two ends of the support spring are respectively connected to the anti-rotation guide sleeve and the positioning pin, the anti-rotation rod is connected to the positioning pin, and the tool holder has an anti-rotation groove for the anti-rotation rod to be inserted.

[0017] The locating pin is configured to slide along the anti-rotation guide sleeve, thereby driving the anti-rotation rod to move away from or towards the anti-rotation groove.

[0018] When the support spring is in its natural state, the anti-rotation rod is embedded in the anti-rotation groove. When the support spring is in its compressed state, the support spring exerts a force on the locating pin to move it closer to the anti-rotation groove.

[0019] In one possible implementation, the anti-rotation device of the cutting tool provided in this application further includes an anti-rotation adapter, which is mounted on the machine tool and has a positioning hole for inserting a positioning pin. The anti-rotation adapter is configured to drive the positioning pin to slide along the anti-rotation guide sleeve when the tool holder is connected to the machine tool spindle, so as to disengage the anti-rotation rod from the anti-rotation groove.

[0020] In one possible implementation, the anti-rotation device of the cutting tool provided in this application further includes a mounting sleeve, an anti-rotation guide sleeve connected to the mounting sleeve, a tool holder fitted onto the mounting sleeve, a fixing member on the mounting sleeve, and the mounting sleeve connected to the tool holder through the fixing member.

[0021] This application provides a cutting tool comprising a tool holder, a tool shank, a drive shaft, a tool shank, a milling cutter head, and a transmission component. The tool shank is connected to the tool holder, and the drive shaft is rotatably mounted inside the tool shank. The drive shaft has a first end and a second end passing through both sides of the tool shank. The tool shank is connected to the first end and is configured to be connected to the machine tool spindle. The milling cutter head is rotatably mounted at one end of the tool shank, and the tool shank has a relief groove. The milling cutter head has annularly arranged cutting edges, some of which pass through the relief groove along the radial direction of the tool shank. The transmission component is disposed between the milling cutter head and the second end, and is configured to drive the milling cutter head to rotate when the drive shaft rotates. When machining small-diameter tubular workpieces, the tool shank and the milling cutter head can be directly inserted into the inner hole of the small-diameter tubular workpiece. When the machine tool is started, the machine tool spindle drives the tool shank to rotate, the tool shank drives the drive shaft to rotate, and the drive shaft drives the milling cutter head to rotate through the transmission component, thereby enabling the milling cutter head to groove the inner wall of the small-space tubular workpiece. Compared to using an angle head and milling cutter to open the inner wall of a tubular workpiece, the feed workpiece required in this application is the sum of the diameter of the tool shank and the length of the cutting edge extending to the outside of the relief groove. The required feed space is smaller, so it is possible to slot tubular workpieces with small diameters. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of the structure of the cutting tool provided in the embodiments of this application;

[0024] Figure 2 A schematic diagram illustrating the structure of the cutting tool provided in the embodiments of this application when the milling cutter head and the workpiece are engaged;

[0025] Figure 3 This is a schematic diagram illustrating the anti-rotation device in the cutting tool provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram illustrating the anti-rotation adapter in the cutting tool provided in the embodiments of this application;

[0027] Figure 5 This is a schematic diagram illustrating the structure of the cutting tool provided in the embodiments of this application, showing the leveling of the milling cutter head and the workpiece.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100-knife holder;

[0030] 200-tool holder;

[0031] 210 - Leaving slot;

[0032] 300-Drive shaft;

[0033] 400-handle;

[0034] 410 - Anti-rotation groove;

[0035] 500-milling cutter head;

[0036] 510-Turbine Ring Gear;

[0037] 600-Drive pin;

[0038] 700-Guide Bushing;

[0039] 800 - Anti-rotation device;

[0040] 810 - Anti-rotation guide sleeve;

[0041] 820 - Positioning pin;

[0042] 830 - Support spring;

[0043] 840 - Anti-spin bar;

[0044] 850 - Guide rod;

[0045] 860-Stop Rotation Adapter;

[0046] 870 - Installation kit.

[0047] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. In embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0050] As mentioned in the background section: a milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, each cutting tooth intermittently removes the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces.

[0051] When machining the keyway inside a tubular workpiece, an angle head is usually used in conjunction with a milling cutter to enter from the inner diameter of the tubular workpiece and then perform milling. At this time, the rotation center line of the angle head is perpendicular to the keyway.

[0052] When using an angle head with a milling cutter, it is necessary to ensure that the inner diameter of the tubular workpiece has sufficient feed space. In other words, the inner radius of the tubular workpiece should be greater than the sum of the thickness of the angle head tool's rotation center line and the tool length. However, when machining some small-diameter tubular workpieces, there may be insufficient feed space for the small-space tubular workpiece, making it impossible to machine keyways on the small-diameter tubular workpiece.

[0053] To address the aforementioned technical problems, this application provides a cutting tool comprising a tool holder, a tool shank, a drive shaft, a tool shank, a milling cutter head, and a transmission component. The tool shank is connected to the tool holder, and the drive shaft is rotatably mounted within the tool shank. The drive shaft has a first end and a second end extending through both sides of the tool shank. The tool shank is connected to the first end and is configured to connect to the machine tool spindle. The milling cutter head is rotatably mounted at one end of the tool shank, and the tool shank has a relief groove. The milling cutter head has annularly arranged cutting edges, some of which pass through the relief groove along the radial direction of the tool shank. The transmission component is positioned between the milling cutter head and the second end and is configured to drive the milling cutter head to rotate when the drive shaft rotates. When machining small-diameter tubular workpieces, the tool shank and the milling cutter head can be directly inserted into the inner hole of the small-diameter tubular workpiece. When the machine tool is started, the machine tool spindle drives the tool shank to rotate, the tool shank drives the drive shaft to rotate, and the drive shaft drives the milling cutter head to rotate through the transmission component, thereby enabling the milling cutter head to groove the inner wall of the small-space tubular workpiece. Compared to using an angle head and milling cutter to open the inner wall of a tubular workpiece, the feed workpiece required in this application is the sum of the diameter of the tool shank and the length of the cutting edge extending to the outside of the relief groove. The required feed space is smaller, so it is possible to slot tubular workpieces with small diameters.

[0054] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0055] refer to Figure 1 and Figure 2 This application discloses a cutting tool, including a tool holder 100, a tool shank 200, a drive shaft 300, a tool shank 400, a milling cutter head 500, and a transmission component.

[0056] The tool holder 200 is connected to the tool holder 100, and the drive shaft 300 is rotatably disposed inside the tool holder 200. The drive shaft 300 has a first end and a second end that pass through both sides of the tool holder 200. The tool shank 400 is connected to the first end and is configured to be connected to the machine tool spindle.

[0057] The milling cutter head 500 is rotatably mounted at one end of the tool holder 200, and the tool holder 200 has a relief groove 210. The milling cutter head 500 has annularly arranged cutting edges, and part of the cutting edges pass through the relief groove 210 along the radial direction of the tool holder 200. The transmission component is disposed between the milling cutter head 500 and the second end. The transmission component is configured to drive the milling cutter head 500 to rotate when the transmission shaft 300 rotates.

[0058] For example, the tool holder 100 is used to connect to a machine tool so as to fix the tool on the machine tool.

[0059] For example, the tool holder 200 is a hollow round tube made of metal to ensure the service life of the tool holder 200.

[0060] For example, the drive shaft 300 is located inside the tool holder 200, one end of the drive shaft 300 extends to the outside of the tool holder 200 so that the drive shaft 300 is connected to the tool shank 400, and the other end of the drive shaft 300 is located inside the tool holder 200 so that the drive shaft 300 is connected to the milling cutter head 500.

[0061] For example, one end of the tool holder 400 is rotatably connected to the tool holder 100, and the other end is fixedly connected to the spindle of the machine tool, so that the machine tool can drive the transmission shaft 300 and the milling cutter head 500 to rotate through the tool holder 400.

[0062] For example, the milling cutter head 500 is an annular cutter head, and a pin is fixed on the milling cutter head 500. The milling cutter head 500 is rotatably connected to the end of the tool holder 200 through the pin. The width of the relief groove 210 is greater than the width of the milling cutter head 500, so that the milling cutter head 500 can extend to the outside of the tool holder 200 through the relief groove 210, so that the milling cutter head 500 can cut the workpiece.

[0063] For example, the transmission component can be a bevel gear set, which includes a driving bevel gear and a driven bevel gear. The driving bevel gear is coaxially connected to the transmission shaft 300, and the driven bevel gear is coaxially connected to the rotating shaft of the milling cutter head 500. The driving bevel gear and the driven bevel gear mesh with each other.

[0064] By adopting the above technical solution, and by setting up a tool holder 100, a tool shank 200, a drive shaft 300, a tool holder 400, a milling cutter head 500, and a transmission component, the tool shank 200 is connected to the tool holder 100, the drive shaft 300 is rotatably disposed within the tool shank 200, and the drive shaft 300 has a first end and a second end passing through both sides of the tool shank 200, the tool holder 400 is connected to the first end, and the tool holder 400 is configured to connect to the machine tool spindle; the milling cutter head 500 is rotatably disposed at one end of the tool shank 200, and the tool shank 200 has a relief groove 210, and the milling cutter head 500 has annularly arranged cutting edges, part of which have a cutting edge along the edge of the cutting edge. The shank 200 passes radially through the relief groove 210. A transmission component is positioned between the milling cutter head 500 and the second end. This transmission component is configured to drive the milling cutter head 500 to rotate when the transmission shaft 300 rotates. When machining small-diameter tubular workpieces, the shank 200 and milling cutter head 500 can be directly inserted into the inner hole of the small-diameter tubular workpiece. The machine tool starts, and the machine spindle drives the tool holder 400 to rotate. The tool holder 400 drives the transmission shaft 300 to rotate, and the transmission shaft 300 drives the milling cutter head 500 to rotate via the transmission component, thus allowing the milling cutter head 500 to slot the inner wall of the small-space tubular workpiece. Compared to using an angled head with a milling cutter to open the inner wall of a tubular workpiece, the feed space required in this application is the sum of the diameter of the shank 200 and the length of the cutting edge extending to the outer side of the relief groove 210. Therefore, it requires less feed space and can slot small-diameter tubular workpieces.

[0065] In some embodiments, reference Figure 1 and Figure 2 The transmission component is a drive pin 600. One end of the drive pin 600 is connected to the second end, and the other end of the drive pin 600 has a worm groove. The milling cutter head 500 has a worm ring tooth 510. The worm groove meshes with the worm ring tooth 510. The drive pin 600 is configured such that when it rotates with the transmission shaft 300, it drives the worm ring tooth 510 to rotate through the worm groove, thereby driving the milling cutter head 500 to rotate.

[0066] The drive pin 600 has a worm groove, which can be used as a non-standard worm. The milling cutter head 500 has a turbine ring tooth 510, which can be used as a turbine. Compared with the traditional worm where the helical groove is perpendicular to the turbine gear, the non-standard worm in this application has a helical groove directly facing the turbine tooth groove. The meshing of the worm groove and the turbine ring tooth 510 can be used as a worm-turbine meshing.

[0067] For example, the turbine ring gear 510 can be a separate component coaxially fixed to the milling head 500.

[0068] By adopting the above technical solution, by setting the transmission component as a drive pin 600, setting a worm groove on the drive pin 600, and setting a worm gear ring tooth 510 on the milling cutter head 500, the transmission shaft 300 and the milling cutter head 500 are connected through the worm groove and the worm gear ring tooth 510. By driving the transmission shaft 300 to rotate, the transmission shaft 300 drives the drive pin 600 to rotate, and the drive pin 600 drives the worm gear ring tooth 510 to rotate through the worm groove, thereby realizing the rotation of the milling cutter head 500.

[0069] Moreover, the drive pin 600 and the turbine ring gear 510 occupy less space, which can compress the circumference of the tool holder 200 at the milling cutter head 500, further compressing the feed space of the tool holder 200 and the milling cutter head 500, making the tool suitable for some small-diameter tubular workpieces, and its processing and manufacturing cost is low, thus reducing the production and manufacturing cost of the tool.

[0070] In some embodiments, reference Figure 1 and Figure 2 The second end has a mounting hole along its axial direction, and the drive pin 600 is inserted into the mounting hole.

[0071] The worm groove on the drive pin 600 will wear down after a long period of use, resulting in a less tight fit between the worm groove and the turbine ring gear 510. Therefore, the drive pin 600 needs to be maintained or replaced regularly.

[0072] For example, the inner diameter of the mounting hole is slightly smaller than the diameter of the drive pin 600. After the drive pin 600 is inserted into the mounting hole, the drive pin 600 and the mounting hole are in an interference fit to ensure the stability of the connection between the drive pin 600 and the second end.

[0073] By adopting the above technical solution, and by providing a mounting hole on the second end, the drive pin 600 can be inserted into the mounting hole, making it convenient for the user to replace the drive pin 600.

[0074] In some embodiments, reference Figure 1 and Figure 2 The tooth tips of the turbine ring gear 510, which are opposite to the center, are cutting edges.

[0075] For example, the milling cutter head 500 is an annular toothed cutter head, with the tip of each tooth being the cutting edge and the back of the tooth being the back of the worm gear ring tooth 510, so that the milling cutter head 500 can be either an annular toothed cutter head or a worm gear ring tooth 510.

[0076] By adopting the above technical solution, and by making the tooth tip of the turbine ring tooth 510 away from the center the cutting edge, the milling cutter head 500 can be used as both a cutting tool for cutting workpieces and a turbine ring tooth 510 in a transmission component, thereby reducing the manufacturing cost of the tool.

[0077] In some embodiments, reference Figure 1 and Figure 2 The cutting tool also includes a guide bushing 700, which is sleeved on one end of the tool holder 200. The guide bushing 700 has a relief groove that is directly opposite the relief groove 210. The guide bushing 700 is configured to abut against the inner wall of the workpiece when the tool holder 200 and the milling cutter head 500 extend into the inner hole of the workpiece to be machined.

[0078] For example, the guide bushing 700 is a metal sleeve and is C-shaped in general. The guide bushing 700 is sleeved on the end of the guide rod, and the C-shaped opening is a clearance groove.

[0079] For example, the outer diameter of the guide bushing 700 is consistent with the inner diameter of the tubular workpiece to be processed. When the tool holder 200 and the milling cutter head 500 are inserted into the inner hole of the tubular workpiece to be processed, the guide bushing 700 abuts against the inner wall of the tubular workpiece to be processed.

[0080] For example, the guide bushing 700 is elastic and is a C-shaped stainless steel sleeve. The C-shaped stainless steel sleeve has a certain deformation capacity. When the guide bushing 700 is inserted into the tubular workpiece to be processed, the guide bushing 700 deforms and abuts against the inner wall of the tubular workpiece. By adopting the above technical solution, when the tool holder 200 and the milling cutter head 500 are inserted into the inner hole of the tubular workpiece to be processed, the guide bushing 700 abuts against the inner wall of the workpiece, thereby enabling the guide bushing 700 to counteract the cutting force of the milling cutter head 500 when cutting the workpiece, thus minimizing the problems of vibration and warping of the milling cutter head 500, ensuring the accuracy of grooving the workpiece to be processed. Moreover, the guide bushing 700 can also improve the structural strength of the end of the tool holder 200, reduce the rigidity requirements of the tool holder 200, and thus reduce the cost of the tool holder 200.

[0081] In some embodiments, reference Figure 1 and Figure 2 The guide bushing 700 has fasteners, and the guide bushing 700 is connected to the tool holder 200 by the fasteners.

[0082] For example, the fastener is a screw, and the guide bushing 700 has a fastening hole through which the screw passes and abuts against the tool holder 200.

[0083] By adopting the above technical solution, when it is necessary to process tubular workpieces with different circumferences, guide bushings 700 of different sizes can be selected according to the inner diameter of the tubular workpiece, so that the cutting tool can be applied to tubular workpieces with different circumferences.

[0084] In some embodiments, reference Figure 1 and Figure 3The cutting tool also includes an anti-rotation device 800, which is mounted on the tool holder 100 and is configured to restrict the rotation of the tool holder 400.

[0085] For example, the anti-rotation device 800 can be an anti-rotation bolt, which is threaded onto the tool holder 100. The tool shank 400 has a groove for inserting the anti-rotation bolt. By turning the anti-rotation screw, the anti-rotation bolt can be moved towards or away from the groove. When the anti-rotation bolt is inserted into the groove, the anti-rotation device 800 restricts the rotation of the tool shank 400; when the anti-rotation bolt leaves the groove, the anti-rotation device 800 releases the restriction on the rotation of the tool shank 400.

[0086] By adopting the above technical solution and setting the anti-rotation device 800, the rotation of the tool holder 200 can be restricted, preventing the tool holder 400 and the milling cutter head 500 from rotating when the tool is not in use, thus avoiding accidents (such as the milling cutter head 500 suddenly rotating when in contact with the workpiece or human body, thereby causing damage to the workpiece or human body).

[0087] In some embodiments, reference Figure 1 and Figure 3 The anti-rotation device 800 includes an anti-rotation guide sleeve 810, a positioning pin 820, a support spring 830, and an anti-rotation rod 840.

[0088] The anti-rotation guide sleeve 810 is connected to the tool holder 100, the positioning pin 820 is slidably disposed in the anti-rotation guide sleeve 810, the two ends of the support spring 830 are respectively connected to the anti-rotation guide sleeve 810 and the positioning pin 820, the anti-rotation rod 840 is connected to the positioning pin 820, and the tool holder 400 has an anti-rotation groove 410 for the anti-rotation rod 840 to be inserted.

[0089] The locating pin 820 is configured to slide along the anti-rotation guide sleeve 810, thereby driving the anti-rotation rod 840 to move away from or towards the anti-rotation groove 410.

[0090] When the support spring 830 is in its natural state, the anti-rotation rod 840 is embedded in the anti-rotation groove 410. When the support spring 830 is in its compressed state, the support spring 830 exerts a force on the positioning pin 820 to move it toward the anti-rotation groove 410.

[0091] For example, the axis of the anti-rotation guide sleeve 810 is parallel to the axis of the tool holder 200, the sliding direction of the positioning pin 820 is along the axis of the anti-rotation guide sleeve, the anti-rotation rod 840 is connected to the positioning pin 820, and the anti-rotation rod 840 extends to one side of the tool holder 400. By sliding the positioning pin 820, the anti-rotation rod 840 can be driven to be inserted into or removed from the anti-rotation groove 410.

[0092] For example, the support spring 830 is disposed inside the anti-rotation guide sleeve 810, with one end of the support spring 830 abutting against the inner bottom wall of the anti-rotation guide sleeve 810 and the other end connected to the positioning pin 820.

[0093] For example, the anti-rotation device 800 also includes a guide rod 850, which is connected to the tool holder 100. The anti-rotation rod 840 has a through hole, through which the guide rod 850 slides. By providing the guide rod 850, which is slidably connected to the anti-rotation rod 840, the stability of the movement of the anti-rotation rod 840 is improved.

[0094] By adopting the above technical solution, by setting the anti-rotation guide sleeve 810, the positioning pin 820, the anti-rotation rod 840 and the anti-rotation groove 410, by controlling the movement of the positioning pin 820, the anti-rotation rod 840 can be driven to move away from or closer to the anti-rotation groove 410, thereby realizing the control of the rotation of the tool holder 400.

[0095] By setting a support spring 830, when the positioning pin 820 is not under force, the support spring 830 provides a supporting force to the positioning pin 820, keeping the positioning pin 820 in a locked state. At this time, the anti-rotation rod 840 is embedded in the anti-rotation groove 410. When the positioning pin 820 is under force and the anti-rotation rod 840 leaves the anti-rotation groove 410, the support spring 830 is in a compressed state. After the positioning pin 820 is not under force, the support spring 830 provides a moving force to the positioning pin 820, causing the anti-rotation rod 840 to move towards the anti-rotation groove 410 until the anti-rotation rod 840 is embedded in the anti-rotation groove 410. This ensures that the anti-rotation device 800 is always in a locked state when the tool is not in use.

[0096] In some embodiments, reference Figure 1 , Figure 3 and Figure 4 The anti-rotation device 800 also includes an anti-rotation adapter 860, which is mounted on the machine tool. The anti-rotation adapter 860 has a positioning hole for the positioning pin 820 to be inserted. The anti-rotation adapter 860 is configured to drive the positioning pin 820 to slide along the anti-rotation guide sleeve 810 when the tool holder 400 is connected to the machine tool spindle, so that the anti-rotation rod 840 disengages from the anti-rotation groove.

[0097] For example, the anti-rotation adapter 860 is detachably mounted on the spindle of the machine tool, and the anti-rotation adapter 860 is located between the machine tool spindle and the tool holder 100. When the machine tool spindle pulls the tool holder 400, the anti-rotation adapter 860 will press the positioning pin 820, and the positioning pin 820 will move away from the anti-rotation groove, thereby causing the anti-rotation rod 840 to disengage from the anti-rotation groove.

[0098] By adopting the above technical solution, and by setting an anti-rotation adapter 860 with a positioning hole, the position of the positioning hole can be fixed after the anti-rotation adapter 860 is installed on the machine tool. The positioning pin 820 is inserted into the positioning hole to fix the position of the positioning pin 820, thereby fixing the position of the tool holder 100 and ensuring the accuracy of the installation direction of the tool holder 100, tool bar 200 and tool shank 400. Moreover, when the tool shank 400 is connected to the machine tool spindle, the anti-rotation adapter 860 drives the positioning pin 820 to slide along the anti-rotation guide sleeve 810, so that the anti-rotation rod 840 disengages from the anti-rotation groove, thereby unlocking the anti-rotation device 800, so that the machine tool can drive the tool shank 400 to rotate.

[0099] In some embodiments, reference Figure 1 and Figure 5 The anti-rotation device 800 also includes a mounting sleeve 870, an anti-rotation guide sleeve 810 connected to the mounting sleeve 870, a tool holder 100 mounted on the mounting sleeve 870, a fixing member on the mounting sleeve 870, and the mounting sleeve 870 connected to the tool holder 100 through the fixing member.

[0100] For example, the mounting sleeve 870 is an annular sleeve that covers the tool holder 100, and the tool holder 100 can rotate relative to the mounting sleeve 870. The fixing member can be a fixing screw, which passes through the mounting sleeve 870 and abuts against the tool holder 100 to fix the mounting sleeve 870 and the tool holder 100.

[0101] For example, the tool holder 100 has a flattening position, which is parallel to the side cutting edge of the milling cutter head 500. By adjusting and determining the angle of the flattening position, the cutting angle of the milling cutter head 500 can be adjusted and determined, which facilitates the subsequent adjustment of the cutting plane of the milling cutter head 500 by the operators.

[0102] By adopting the above technical solution, after connecting the tool holder 400 to the machine tool spindle, it is necessary to adjust the milling plane of the milling cutter head 500 so that the milling plane of the milling cutter head 500 is consistent with the keyway plane to be machined. At this time, it is necessary to open the fixing piece, and then rotate the tool holder 100 so that the tool holder 100 rotates relative to the mounting sleeve 870. At this time, the tool holder 100 can drive the milling cutter head 500 to rotate until the milling plane of the milling cutter head 500 is consistent with the keyway plane to be machined. Then, the fixing piece is used to fix the mounting sleeve 870 and the tool holder 100, thereby completing the positioning of the milling plane of the milling cutter head 500.

[0103] In summary, the method of using the cutting tool provided in this application is as follows:

[0104] Install the anti-rotation adapter 860 on the machine tool spindle;

[0105] Install the tool holder 400 on the spindle of the machine tool. Adjust the installation direction of the tool holder 400 according to the anti-rotation adapter 860 so that the positioning pin 820 is inserted into the positioning hole in the anti-rotation adapter 860. Then adjust the milling plane of the milling cutter head 500 through the mounting sleeve 870 so that the milling plane of the milling cutter head 500 is consistent with the keyway plane to be machined.

[0106] The tubular workpiece to be processed is mounted on the machine tool. The machine tool drives the cutting tool to feed along its axis, so that the milling cutter head 500 extends into the interior of the tubular workpiece to be processed. At this time, the guide bushing 700 abuts against the inner wall of the tubular workpiece to be processed. The machine tool drives the tool holder 400 to rotate, thereby driving the milling cutter head 500 to rotate, thereby slotting the inner wall of the tubular workpiece to be processed.

[0107] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0108] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cutting tool, characterized in that, Includes tool holder, tool shank, drive shaft, tool holder, milling cutter head, and transmission components; The tool holder is connected to the tool support, and the drive shaft is rotatably disposed inside the tool holder. The drive shaft has a first end and a second end that pass through both sides of the tool holder. The tool shank is connected to the first end and is configured to be connected to the machine tool spindle. The milling cutter head is rotatably mounted at one end of the tool holder, and the tool holder has a relief groove. The milling cutter head has annularly arranged cutting edges, and a portion of the cutting edges passes through the relief groove along the radial direction of the tool holder. The transmission member is disposed between the milling cutter head and the second end, and the transmission member is configured to drive the milling cutter head to rotate when the transmission shaft rotates. The transmission component is a drive pin, one end of which is connected to the second end, and the other end of which has a worm groove. The milling cutter head has a worm gear ring tooth, and the worm groove meshes with the worm gear ring tooth. The drive pin is configured such that when it rotates with the transmission shaft, it drives the worm gear ring tooth to rotate through the worm groove, thereby driving the milling cutter head to rotate.

2. The cutting tool according to claim 1, characterized in that, The second end has a mounting hole along its axial direction, and the drive pin is inserted into the mounting hole.

3. The cutting tool according to claim 1, characterized in that, The tooth tip of the worm gear ring tooth that is away from the center is the cutting edge.

4. The cutting tool according to claim 1, characterized in that, It also includes a guide bushing, which is sleeved on one end of the tool holder. The guide bushing has a relief groove that is directly opposite the relief groove. The guide bushing is configured to abut against the inner wall of the workpiece when the tool holder and the milling cutter head extend into the inner hole of the workpiece to be processed.

5. The cutting tool according to claim 4, characterized in that, The guide bushing has fasteners, and the guide bushing is connected to the tool holder through the fasteners.

6. The cutting tool according to any one of claims 1-5, characterized in that, It also includes an anti-rotation device mounted on the tool holder, the anti-rotation device being configured to restrict the rotation of the tool holder.

7. The cutting tool according to claim 6, characterized in that, The anti-rotation device includes an anti-rotation guide sleeve, a positioning pin, a support spring, and an anti-rotation rod; The anti-rotation guide sleeve is connected to the tool holder, the positioning pin is slidably disposed in the anti-rotation guide sleeve, the two ends of the support spring are respectively connected to the anti-rotation guide sleeve and the positioning pin, the anti-rotation rod is connected to the positioning pin, and the tool holder has an anti-rotation groove for the anti-rotation rod to be inserted. The positioning pin is configured to slide along the anti-rotation guide sleeve, thereby driving the anti-rotation rod to move away from or towards the anti-rotation groove. When the support spring is in its natural state, the anti-rotation rod is embedded in the anti-rotation groove. When the support spring is in its compressed state, the support spring exerts a force on the positioning pin to move it toward the anti-rotation groove.

8. The cutting tool according to claim 7, characterized in that, The anti-rotation device further includes an anti-rotation adapter, which is mounted on the machine tool. The anti-rotation adapter has a positioning hole for the positioning pin to be inserted. The anti-rotation adapter is configured to drive the positioning pin to slide along the anti-rotation guide sleeve when the tool holder is connected to the machine tool spindle, so that the anti-rotation rod disengages from the anti-rotation groove.

9. The cutting tool according to claim 8, characterized in that, The anti-rotation device further includes a mounting sleeve, the anti-rotation guide sleeve is connected to the mounting sleeve, the mounting sleeve is fitted onto the tool holder, the mounting sleeve has a fixing member, and the mounting sleeve is connected to the tool holder through the fixing member.

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