A replaceable insert type broach

Abstract

The application provides a replaceable blade type broach, and relates to the field of tool systems, which comprises a mounting surface extending along a first direction on a broach body, a mounting groove, a plurality of first mounting holes and at least one second mounting hole on the mounting surface, the first mounting holes are respectively arranged on both sides of the mounting groove along the extension direction of the mounting groove, the second mounting hole is arranged on any one side of the blade, the first direction is parallel to the axis of the broach body; the blade is mounted in the mounting groove; a limiting assembly is detachably mounted in the first mounting hole, and is in abutment with both ends of the blade, and is used for limiting the blade along the first direction and the second direction, the second direction is perpendicular to the mounting surface; a positioning assembly is detachably mounted in the second mounting hole, and is used for being in abutment with the side surface of the blade and positioning the blade along the third direction, the third direction is perpendicular to the plane formed by the first direction and the second direction. The broach blade can be replaced alone, the three-face positioning structure is adopted, the stability and flexibility are improved, the service life of the broach is prolonged, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of tool systems, and more specifically to a replaceable blade broach. Background Technology

[0002] In the field of modern machining, broaching is increasingly being used in various industries due to its high machining accuracy, good dimensional stability, and long service life.

[0003] Currently, the most commonly used cutting tools in broaching are solid carbide broaches, with the tool body and insert formed as a single piece. When machining workpieces, solid carbide tools are prone to errors in positional and dimensional accuracy due to insufficient tool strength. Increasing tool strength requires the use of higher-performance materials or more complex processes, leading to a sharp increase in tool costs and excessively high machining costs. Once a solid carbide tool is worn or damaged, it must be replaced entirely, increasing both usage and time costs.

[0004] Therefore, there is an urgent need for a replaceable blade broach to solve the above problems. Utility Model Content

[0005] The purpose of this application is to address the above problems by providing a replaceable blade broach, which solves the problem of needing to replace the entire broach after wear or damage due to insufficient blade strength, thus increasing the cost of use and time.

[0006] This application provides a replaceable blade broach, comprising: A broach body is provided with a mounting surface extending along a first direction, and the mounting surface is provided with a mounting groove, two first mounting holes and at least one second mounting hole. The first mounting holes are respectively provided on both sides of the mounting groove along its extension direction, and the second mounting hole is provided on either side of the blade. The first direction is parallel to the axis of the broach body. The blade is mounted in the mounting slot; A limiting component is detachably installed in the first mounting hole and abuts against both ends of the blade to limit the blade along the first direction and the second direction, wherein the second direction is perpendicular to the mounting surface. A positioning component is detachably installed in the second mounting hole for abutting against the side of the blade and positioning the blade along a third direction, the third direction being perpendicular to the plane formed by the first direction and the second direction.

[0007] According to the technical solutions provided in certain embodiments of this application, the blade has a cutting portion and a positioning portion. The positioning portion includes a first positioning surface and a second positioning surface disposed at both ends of the cutting portion along the axial direction of the blade, and a third positioning surface disposed on one side of the cutting portion along the radial direction of the blade. The first positioning surface is parallel to the axial direction of the blade, the second positioning surface is perpendicular to the first positioning surface, the first positioning surface and the second positioning surface are used to abut against the limiting component, and the third positioning surface is used to abut against the positioning component.

[0008] According to the technical solutions provided in certain embodiments of this application, the limiting component includes: A blade pressure plate, the blade pressure plate including a limiting part and a mounting part, the limiting part having a first limiting surface and a second limiting surface that are perpendicular to each other, the first limiting surface being used to abut against a first positioning surface, and the second limiting surface being used to abut against a second positioning surface; A pressure plate fastener is provided, which is detachably connected to the broach body and the mounting part.

[0009] According to the technical solutions provided in certain embodiments of this application, the positioning component includes: A wedge block, wherein an integrally formed wedge-shaped boss is provided on the side of the wedge block near the blade; A wedge fastener is connected to a wedge inside the second mounting hole so that the wedge abuts against the side of the blade.

[0010] According to the technical solutions provided in certain embodiments of this application, the second mounting hole is inclined towards the mounting groove relative to the axis of the broach body, and the distance between the axis of the second mounting hole and the tangent gradually increases from the side closer to the mounting surface to the side farther away from the mounting surface. The tangent is the surface where the axis of the broach body is located and is perpendicular to the mounting surface.

[0011] According to the technical solutions provided in certain embodiments of this application, the wedge fastener is threadedly connected to the wedge, so that tightening the wedge fastener generates a thrust on the wedge along the radial direction of the second mounting hole, pushing the wedge to move along the third direction of the blade, so that the third positioning surface abuts against the wedge.

[0012] According to the technical solutions provided in certain embodiments of this application, the width of the limiting portion is smaller than the cross-sectional width of the cutting portion.

[0013] According to the technical solutions provided in certain embodiments of this application, chip removal grooves are provided on both sides of the blade. The chip removal grooves are distributed along the cutting direction of the broach and the opening direction faces the inner sidewall of the mounting groove, for discharging chips generated during the cutting process.

[0014] According to the technical solutions provided in certain embodiments of this application, the broach body is provided with a leveling groove on the end face along the cutting direction, which is used to cooperate with the workpiece surface to achieve leveling during the cutting process.

[0015] According to the technical solutions provided in some embodiments of this application, a clearance groove is provided on one side of the mounting surface on the broach body to avoid interference with the workpiece being processed during the cutting process.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: The replaceable blade broach includes a broach body, a blade, a limiting component, and a positioning component. The blade is embedded in a mounting groove. The limiting component is detachably installed in the first mounting hole and abuts against both ends of the blade to limit the blade along the axial direction and the radial direction of the blade. The positioning component is detachably installed in the second mounting hole and abuts against the side of the blade to position the blade along the side of the blade, forming a three-dimensional constraint on the blade. The detachable structure of the limiting component and the positioning component enables quick fixing and disassembly. When the broach is worn or the working condition changes, only the components need to be disassembled to replace the blade, without the need to replace the entire broach body. This significantly reduces the cost of tool use, improves machining accuracy and stability, extends tool life, reduces downtime, and enhances the versatility and flexibility of the tool body.

[0017] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a schematic diagram of the overall structure of a replaceable blade broach provided in an embodiment of this application; Figure 2 This is a schematic diagram of a broach body structure provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a blade provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a limiting component provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a positioning component provided in an embodiment of this application; Figure 6 A schematic diagram illustrating the structural relationship between the positioning component and the limiting component and the blade provided in the embodiments of this application; Figure 7 This is a schematic diagram of the tilt angle of the second mounting hole provided in an embodiment of this application.

[0020] The text labels in the image represent: 1. Broach body; 2. Blade; 3. Limiting component; 4. Positioning component; 101. Mounting surface; 102. Mounting groove; 103. First mounting hole; 104. Second mounting hole; 105. Leveling groove; 106. Clearance groove; 107. Handle; 108. Blade body; 21. Cutting part; 22. Positioning part; 31. Blade pressure plate; 32. Pressure plate fastener; 41. Wedge; 42. Wedge fastener; 201. First positioning surface; 202. Second positioning surface; 203. Third positioning surface; 204. Chip removal groove; 301. Limiting part; 302. Mounting part; 3011. First limiting surface; 3012. Second limiting surface; 401. Wedge-shaped boss. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0022] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0023] As mentioned in the background section, in view of the problems in the prior art, this embodiment provides a replaceable blade broach, including: The broach body 1 has a mounting surface 101 extending along a first direction. The mounting surface 101 has a mounting groove 102, two first mounting holes 103, and at least one second mounting hole 104. The first mounting holes 103 are respectively located on both sides of the mounting groove 102 along its extension direction, and the second mounting hole 104 is located on either side of the blade 2. The first direction is parallel to the axis of the broach body 1. Blade 2, the blade 2 is installed in the mounting slot 102; The limiting component 3 is detachably installed in the first mounting hole 103 and abuts against both ends of the blade 2. It is used to limit the blade 2 along the first direction and the second direction, wherein the second direction is perpendicular to the mounting surface 101. Positioning component 4 is detachably installed in the second mounting hole 104 and is used to abut against the side of the blade 2 to position the blade 2 along a third direction, which is perpendicular to the plane formed by the first direction and the second direction.

[0024] Please refer to Figure 1 and Figure 2The broach body 1 is cylindrical, consisting of a shank 107 and a blade 108. The shank 107 is used to connect to the drive device and transmit the broaching force, while the blade 108 is used to assemble the insert 2. A mounting groove 102 is provided at the front end of the blade 108 along the cutting direction. The mounting groove 102 is a strip-shaped groove with a length matching the insert 2 to be assembled, used to install the insert 2. Two first mounting holes 103 are provided, symmetrically distributed at both ends of the mounting groove 102, with a circular cross-section and communicating with the mounting groove 102. Two second mounting holes 104 are provided, evenly distributed on either side along the cutting direction of the insert 2, and located between the two first mounting holes 103. The insert 2 is a triangular prism as a whole, and its shape can be changed according to actual conditions to adapt to different cutting conditions. Wherein, the first direction is along the axis of the blade 2, the second direction is along the radial direction of the blade 2, and the third direction is along the side perpendicular to the blade 2; the limiting component 3 is detachably installed on the broach body 1 to limit the blade 2 along the axial and radial directions to prevent the blade 2 from loosening or shaking during the cutting process; the positioning component 4 is detachably installed on the broach body 1 to position the blade 2 laterally along the third direction to prevent the blade 2 from shifting during the cutting process, thereby achieving three-dimensional spatial positioning of the blade 2.

[0025] This application uses the limiting component 3 and the positioning component 4 to form a three-dimensional spatial constraint on the insert 2. Together with the mounting groove 102, it ensures that the insert 2 always maintains the required broaching posture during the broaching process. At the same time, the detachable structure of the limiting component 3 and the positioning component 4 enables quick fixing and disassembly. When the insert 2 is worn or the working condition is changed, only the components need to be disassembled to replace it. There is no need to perform secondary processing or complete replacement of the broach body 1, which extends the service life of the broach body, reduces the cost of tool manufacturing, and solves the problems of insufficient positioning accuracy, high replacement and maintenance costs, and poor adaptability of traditional integral broach inserts. It avoids the waste of resources caused by the need to scrap the entire broach due to the wear of the insert 2, the machining dimensional deviation caused by positioning offset, and the low production efficiency caused by complex maintenance.

[0026] In a preferred embodiment, the blade 2 includes a cutting portion 21 and a positioning portion 22. The positioning portion 22 has a first positioning surface 201 and a second positioning surface 202 disposed at both ends of the cutting portion 21 along the axial direction of the blade 2, and a third positioning surface 203 disposed on one side of the cutting portion 21 along the radial direction of the blade 2. The first positioning surface 201 is parallel to the axial direction of the blade 2, and the second positioning surface 202 is perpendicular to the first positioning surface 201. The first positioning surface 201 and the second positioning surface 202 are used to abut against the limiting component 3, and the third positioning surface 203 is used to abut against the positioning component 4.

[0027] like Figure 3As shown, the cutting part 21 has a plurality of cutting surfaces that are evenly distributed along the axial direction of the blade 2 and have the same structure; the first positioning surface 201 is a rectangular plane provided at both ends of the cutting part 21, and the two first positioning surfaces 201 are symmetrically distributed with respect to the cutting part 21; the second positioning surface 202 is a triangular plane provided at both ends of the cutting part 21; and the third positioning surface 203 is provided on one side of the cutting part 21 along the forward direction, and is provided on the same side as the second mounting hole 104.

[0028] In a preferred embodiment, the limiting component 3 includes: The blade pressure plate 31 includes a limiting part 301 and a mounting part 302. The limiting part 301 has a first limiting surface 3011 and a second limiting surface 3012 that are perpendicular to each other. The first limiting surface 3011 is used to abut against the first positioning surface 201, and the second limiting surface 3012 is used to abut against the second positioning surface 202. The pressure plate fastener 32 passes through the broach body 1 and is detachably connected to the mounting part 302.

[0029] like Figure 4 and Figure 6 As shown, the limiting part 301 is configured as an L-shaped boss, with a rectangular block in the horizontal direction and extending longitudinally to connect with the mounting part 302. The cross-section is L-shaped. The mounting part 302 is configured as a cylinder, with a threaded connection hole inside the cylinder for connecting with the pressure plate fastener 32. The first limiting surface 3011 is located at the bottom of the rectangular block and is a horizontal rectangular plane used to fit against the first positioning surface 201 of the blade 2. The radial positioning of the blade 2 is achieved by tightening the pressure plate fastener 32. The second limiting surface 3012 is located on the vertical rectangular block on the side of the L-shaped boss, intersecting perpendicularly with the first limiting surface 3011 and fitting against the second positioning surface 202 of the blade 2. The axial positioning of the blade 2 is achieved by tightening the pressure plate fastener 32. The pressure plate fastener 32 can be a screw, which passes through the broach body 1 and is detachably connected to the blade pressure plate 31. Of course, the pressure plate fastener 32 can also be configured as other fasteners with external threads. The specific settings and adjustments can be made according to the actual situation, and no specific limitation is made here.

[0030] In a preferred embodiment, the positioning component 4 includes: Wedge block 41, wherein an integrally formed wedge-shaped boss 401 is provided on the side of the wedge block 41 near the blade 2; A wedge fastener 42 is connected to a wedge 41 inside the second mounting hole 104 so that the wedge 41 abuts against the side of the blade 2.

[0031] like Figure 5As shown, the main body of the wedge block 41 is a cylinder with an axial through hole in the middle. An integrally formed wedge-shaped boss 401 is provided on the side of the cylinder near the blade 2. The edge of the wedge-shaped surface is chamfered to facilitate the discharge of debris. The wedge block fastener 42 can be a screw, which is detachably connected to the wedge block 41 through the axial through hole in the middle of the cylinder. The wedge block fastener 42 can also be other fasteners with external threads. The specific settings and adjustments can be made according to the actual situation, and no specific limitation is made here.

[0032] In a preferred embodiment, the second mounting hole 104 is inclined toward the mounting groove 102 relative to the axis of the broach body 1, and the distance between the axis of the second mounting hole 104 and the tangent gradually increases from the side closer to the mounting surface 101 to the side farther away from the mounting surface 101. The tangent is the surface where the axis of the broach body 1 is located and is perpendicular to the mounting surface 101.

[0033] like Figure 7 As shown, the axis of the second mounting hole 104 forms a preset angle with the mounting surface 101 of the broach body 1. The opening direction of the preset angle is away from the mounting groove 102, and the preset angle is an acute angle. The inclined design of the second mounting hole 104 allows the wedge block 41 to smoothly approach the blade 2 and fix the blade 2 when the wedge fastener 42 and the wedge block 41 are connected. The inclined design of the second mounting hole 104 can match different specifications of blades 2 according to the actual situation, improving the versatility of the tool.

[0034] In a preferred embodiment, the wedge fastener 42 is threadedly connected to the wedge 41 so that tightening the wedge fastener 42 generates a radial thrust on the wedge 41 along the second mounting hole 104, pushing the wedge 41 to move along the third direction of the blade 2, so that the third positioning surface 203 abuts against the wedge 41.

[0035] like Figure 6 and Figure 1 As shown, the wedge-shaped boss 401 of the wedge block 41 abuts against the third positioning surface 203 of the blade 2. By tightening the wedge block fastener 42, the wedge block 41 presses against the blade 2, and cooperates with the mounting groove 102 to fix the blade 2 in the mounting groove 102, thereby achieving side positioning of the blade 2.

[0036] In a preferred embodiment, the width of the limiting portion 301 is smaller than the cross-sectional width of the cutting portion 21.

[0037] like Figure 3 Figure 4As shown, the limiting part 301 is based on a cylindrical base. Part of the material is removed by cutting. Bosses are retained on both sides of the axis to form a clearance space. The width of the bosses is smaller than that of the cutting part 21 to avoid the limiting part 301 from scraping the machined surface or hindering the cutting part 21 from entering / retracting during cutting.

[0038] In a preferred embodiment, chip removal grooves 204 are provided on both sides of the blade 2. The chip removal grooves 204 are distributed along the cutting direction of the broach and the opening direction faces the inner sidewall of the mounting groove 102, for discharging chips generated during the cutting process.

[0039] like Figure 3 As shown, the chip removal grooves 204 are symmetrically distributed on both sides of the insert 2 and are evenly distributed along the cutting direction of the broach body 1. The cross-section is rectangular and the groove walls are smoothly transitioned to reduce chip jamming. The depth and width match the size of the broaching chips. During broaching, the chips generated by the insert 2 cutting the workpiece flow to both sides of the insert 2 due to the lateral component of the cutting force, and are directly discharged from the chips generated during the cutting process.

[0040] In a preferred embodiment, the broach body 1 is provided with a leveling groove 105 on the end face in the cutting direction, which is used to cooperate with the workpiece surface to achieve leveling during the cutting process.

[0041] like Figure 1 As shown, the leveling groove 105 is set on the end face of the broach body 1 in the cutting direction. It is a rectangular groove extending along the width direction of the broach body 1. Before cutting, the pre-drilled hole on the workpiece surface and the leveling groove 105 form a double constraint to ensure the accuracy of cutting.

[0042] In a preferred embodiment, a clearance groove 106 is provided on one side of the mounting surface 101 on the broach body 1 to avoid interference between the broach and the workpiece during the cutting process.

[0043] like Figure 2 As shown, the clearance groove 106 is located on the left side of the mounting surface 101 along the cutting direction, and has an L-shaped cross-section to avoid the sharp corner of the workpiece.

[0044] The replaceable insert broach provided in this application adopts a three-sided positioning structure to ensure that the insert 2 always maintains the required broaching posture during the cutting process, thereby improving positioning accuracy. The insert 2 is embedded in the mounting groove 102, and the detachable structure of the limiting component 3 and the positioning component 4 enables quick fixing and disassembly. When worn or when changing working conditions, the insert 2 can be replaced simply by disassembling the components, without the need for secondary processing or complete replacement of the broach body 1. Combined with structural details such as the limiting part 301 being narrower than the cutting part 21, the chip removal groove 204 guiding chips, the leveling groove 105 for calibration, and the clearance groove 106 for reserved space, the application solves the problems of insufficient positioning accuracy, high replacement and maintenance costs, and poor adaptability of traditional integral broach inserts, and achieves a comprehensive improvement in positioning accuracy, maintenance efficiency, and machining stability.

[0045] To facilitate understanding by those skilled in the art, the working principle of the replaceable blade broach provided in this application is further as follows: Insert the blade 2 into the mounting groove 102 of the broach body 1; insert the limiting component 3 into the first mounting hole 103, and adjust the limiting component 3 so that the T-shaped limiting part 301 of the blade pressure plate 31 is aligned with both ends of the blade 2, so that the first limiting surface 3011 is in contact with the first positioning surface 201 of the blade 2 to constrain radial displacement, and the second limiting surface 3012 abuts against the second positioning surface 202 of the blade 2 to constrain axial displacement. Tighten the pressure plate fastener 32 through the mounting part 302 of the broach body 1 and the blade pressure plate 31 to complete the axial and radial fixation; insert the positioning component 4 into the second mounting hole 104, and adjust the positioning component 4 to fix the wedge-shaped boss 401 of the wedge block 41. Align the third positioning surface 203 of the insert 2 with the wedge fastener 42, pass through the axial through hole of the wedge 41, and screw it into the inclined second mounting hole 104. When tightened, the axial force of the wedge fastener 42 is converted into a lateral thrust along the inclined hole, pushing the wedge-shaped boss of the wedge 41 to press against the third positioning surface 203 of the insert 2, so that the insert 2 is laterally attached to the inner wall of the mounting groove 102, completing the lateral positioning. When the insert 2 needs to be replaced, loosen the wedge fastener 42 and the pressure plate fastener 32 in sequence, release the axial and radial constraints of the insert pressure plate 31, and release the lateral constraints of the wedge 41 on the insert 2, remove the old insert, install the new insert, and repeat the assembly and positioning steps. During operation, the chip removal groove 204, the leveling groove 105, and the clearance groove 106 assist the tool, making the cutting process continuous and smooth.

[0046] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are merely preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A replaceable blade broach, characterized in that, include: The broach body (1) has a mounting surface (101) extending along a first direction, and the mounting surface (101) has a mounting groove (102), two first mounting holes (103) and at least one second mounting hole (104). The first mounting holes (103) are respectively located on both sides of the mounting groove (102) along its extension direction, and the second mounting hole (104) is located on either side of the blade (2). The first direction is parallel to the axis of the broach body (1). Blade (2), the blade (2) is installed in the mounting slot (102); Limiting component (3), the limiting component (3) is detachably installed in the first mounting hole (103) and abuts against both ends of the blade (2) for limiting the blade (2) along the first direction and the second direction, the second direction being perpendicular to the mounting surface (101); Positioning component (4), which is detachably installed in the second mounting hole (104) for abutting against the side of the blade (2) and positioning the blade (2) along a third direction, wherein the third direction is perpendicular to the plane formed by the first direction and the second direction.

2. The replaceable blade broach according to claim 1, characterized in that, The blade (2) includes a cutting part (21) and a positioning part (22). The positioning part (22) has a first positioning surface (201) and a second positioning surface (202) disposed at both ends of the cutting part (21) along the axial direction of the blade (2), and a third positioning surface (203) disposed on the cutting part (21) along the radial side of the blade (2). The first positioning surface (201) is parallel to the axial direction of the blade (2), and the second positioning surface (202) is perpendicular to the first positioning surface (201). The first positioning surface (201) and the second positioning surface (202) are used to abut against the limiting component (3), and the third positioning surface (203) is used to abut against the positioning component (4).

3. The replaceable blade broach according to claim 2, characterized in that, The limiting component (3) includes: The blade pressure plate (31) includes a limiting part (301) and a mounting part (302). The limiting part (301) has a first limiting surface (3011) and a second limiting surface (3012) that are perpendicular to each other. The first limiting surface (3011) is used to abut against the first positioning surface (201), and the second limiting surface (3012) is used to abut against the second positioning surface (202). The pressure plate fastener (32) is detachably connected to the broach body (1) and the mounting part (302).

4. The replaceable blade broach according to claim 2, characterized in that, The positioning component (4) includes: Wedge (41), the wedge (41) has an integrally formed wedge-shaped boss (401) on the side near the blade (2). A wedge fastener (42) is connected to a wedge (41) inside the second mounting hole (104) so ​​that the wedge (41) abuts against the side of the blade (2).

5. The replaceable blade broach according to claim 1, characterized in that, The second mounting hole (104) is inclined toward the mounting groove (102) relative to the axis of the broach body (1), and the distance between the axis of the second mounting hole (104) and the cutting surface gradually increases from the side closer to the mounting surface (101) to the side farther away from the mounting surface (101). The cutting surface is the surface where the axis of the broach body (1) is located and is perpendicular to the mounting surface (101).

6. The replaceable blade broach according to claim 4, characterized in that, The wedge fastener (42) is threadedly connected to the wedge (41) so that tightening the wedge fastener (42) generates a radial thrust on the wedge (41) along the second mounting hole (104), pushing the wedge (41) to move along the third direction blade (2) so that the third positioning surface (203) abuts against the wedge (41).

7. The replaceable blade broach according to claim 3, characterized in that, The width of the limiting part (301) is smaller than the cross-sectional width of the cutting part (21).

8. The replaceable blade broach according to claim 1, characterized in that, Chip removal grooves (204) are provided on both sides of the blade (2). The chip removal grooves (204) are distributed along the cutting direction of the broach and the opening direction faces the inner wall of the mounting groove (102) to discharge the chips generated during the cutting process.

9. The replaceable blade broach according to claim 1, characterized in that, The broach body (1) has a leveling groove (105) on its end face along the cutting direction, which is used to cooperate with the workpiece surface to achieve leveling during the cutting process.

10. The replaceable blade broach according to claim 1, characterized in that, A clearance groove (106) is provided on one side of the mounting surface (101) on the broach body (1) to avoid interference with the workpiece during the cutting process.

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