A multi-station machining tool for machining a box worm hole

Abstract

The utility model belongs to the technical field of machining tool belongs to a kind of multi-station processing tool for box worm hole processing, including handle and tool body, tool body is equipped with outer circle processing blade A, outer circle processing blade B, first step processing blade A, first step processing blade B, first chamfer blade, second chamfer blade, third chamfer blade, second step processing blade A, second step processing blade B and third step processing blade;The rotary diameter of first step processing blade A and first step processing blade B is equal, and the rotary diameter of second step processing blade A and second step processing blade B is equal;The rotary diameter of outer circle processing blade A and outer circle processing blade B is equal;First step processing blade A, second step processing blade A and third step processing blade are sequentially arranged in the tool body along the axial direction from front to back, and the rotary diameter is sequentially increased. The processing tool of the utility model can process box worm hole at a time, without changing tool.

Description

Technical Field

[0001] This utility model relates to a multi-station machining tool for machining worm gear holes in a housing, belonging to the field of machining tool technology. Background Technology

[0002] In machining, products often contain multiple internal and external stepped holes with strict coaxiality requirements, and also require chamfering. Such structures are typically machined on CNC lathes or CNC machining centers. However, regardless of the method used, frequent clamping and tool changes are necessary, making it difficult to meet the technical requirements. Furthermore, this results in long machine tool auxiliary times, long process cycle times, low work efficiency, and very high costs, ultimately reducing the product's market competitiveness.

[0003] Taking the machining of the worm gear housing as an example, the worm gear housing is a key functional unit in the housing structure. Its core function is to support the worm shaft and maintain the stable operation of the entire transmission system. Through precise dimensional and geometric tolerance design, the worm gear housing provides stable radial support for the worm shaft, ensuring that the worm and worm wheel maintain the designed center distance and offset angle when meshing. However, in actual machining, the worm gear housing has several areas that require machining, such as the outer diameter, the first step, the second step, the third step, and the first, second, and third chamfers.

[0004] In previous machining methods, these parts were machined in steps, requiring one boring bar to machine the outer diameter, one boring bar to machine the first step, one boring bar to machine the second step, one boring bar to machine the third step, one chamfering tool to machine the first chamfer, one chamfering tool to machine the second chamfer, and one chamfering tool to machine the third chamfer. The entire machining process required a total of 7 tools and 7 tool changes. This machining method was not only time-consuming, but the frequent tool changes also made it difficult to ensure coaxiality at various positions, ultimately resulting in poor machining accuracy and low efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0006] The technical solution provided by this utility model is as follows: A multi-station machining tool for machining worm gear holes in a housing includes a tool holder and a tool body. The tool body is connected to one end of the tool holder, and a cutting tool assembly is provided on the tool body. The cutting tool assembly includes an outer diameter machining tool A, an outer diameter machining tool B, a first step machining tool A, a first step machining tool B, a first chamfering tool, a second chamfering tool, a third chamfering tool, a second step machining tool A, a second step machining tool B, and a third step machining tool. The first step machining tool A and the first step machining tool B have equal rotation diameters, and the second step machining tool A and the second step machining tool B have equal rotation diameters. The outer diameter machining tool A and the outer diameter machining tool B have equal rotation diameters. The first step machining tool A, the second step machining tool A, and the third step machining tool are arranged sequentially from front to back along the axial direction on the tool body, and their rotation diameters increase sequentially.

[0007] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The machining tool of this utility model includes an outer circle machining insert, a three-stage step machining insert, and a three-stage chamfering insert, which can cover the machining requirements of outer circle, step surface, and chamfer. The rotating diameter of the paired inserts is equal, ensuring symmetrical machining and avoiding vibration and error. Using the machining tool of this utility model, the outer circle, first step, second step, third step, first chamfer, second chamfer, and third chamfer of the worm gear hole of the housing can be machined in one go without changing the tool, avoiding the accumulation of errors from multiple clamping, which is conducive to ensuring product accuracy. It integrates the machining of outer circle, three-stage step, and chamfer, saving tool changing time and machining time.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the tool body is provided with a first chip removal groove, a second chip removal groove, a third chip removal groove, and a fourth chip removal groove. The outer diameter machining insert A, the first step machining insert A, the first chamfering insert, the second chamfering insert, and the third chamfering insert are installed in the first chip removal groove; the second step machining insert A is installed in the second chip removal groove; the outer diameter machining insert B, the first step machining insert B, and the third step machining insert are installed in the third chip removal groove; and the second step machining insert B is installed in the fourth chip removal groove.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the first chip removal groove handles the chips generated by the outer circle, the first step and the chamfering process, and the third chip removal groove handles the chips generated by the outer circle, the first step and the third step processes. The outer circle machining, step machining and chamfering inserts are distributed to different chip removal grooves according to the machining sequence and chip characteristics, so as to avoid the mixing of chips from different processes, which may cause blockage or scratches on the machined surface.

[0011] In addition, placing the first step machining inserts A / B in the first and third chip removal grooves to form a symmetrical structure, and placing the second step machining inserts A / B in the second and fourth chip removal grooves to form a symmetrical structure, can not only balance the centrifugal force and vibration during the machining process and improve the stability of high-speed machining, but also ensure the flatness of the step surface by using the symmetrical structure to offset the radial force during paired cutting.

[0012] Furthermore, the blade in the blade assembly is detachably mounted to the blade body via a locking screw.

[0013] The advantage of adopting the above-mentioned further solution is that by fixing it with locking screws, it is easy to replace it individually after wear, thus reducing maintenance costs.

[0014] Furthermore, the handle and the blade body are integrally formed.

[0015] The advantages of adopting the above-mentioned further solutions are that they eliminate connection gaps, improve overall rigidity, and reduce the impact of vibration on accuracy.

[0016] Furthermore, the outer circle machining insert A, the first chamfering insert, the second chamfering insert, the third chamfering insert, the outer circle machining insert B, and the third step machining insert are triangular in structure, with triangular grooves provided at the mounting locations of the corresponding inserts on the tool body, and the inserts are placed inside the triangular grooves.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by using a triangular groove and blade structure, the stability and impact resistance of the blade installation are improved through the three-point positioning principle.

[0018] Furthermore, the blades in the first step machining blade A, the first step machining blade B, the second step machining blade A, and the second step machining blade B have a quadrilateral structure, and a quadrilateral groove is provided at the corresponding blade mounting position on the tool body, with the blade placed inside the quadrilateral groove.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the cutting inserts used for cutting the first and second steps have a quadrilateral structure, which can provide a larger contact surface and improve impact resistance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the first chip groove of the machining tool of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the third chip groove of the machining tool of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the second chip groove of the machining tool of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the fourth chip groove of the machining tool of this utility model.

[0025] Figure 5 This is a schematic diagram of the structure for machining the outer cylindrical surface of a box using the machining tool of this utility model with the outer cylindrical cutting insert B.

[0026] Figure 6 This is a schematic diagram of the structure for machining the outer cylindrical surface of a box using the machining tool of this utility model with the outer cylindrical cutting insert A.

[0027] Figure 7 This is a schematic diagram of the structure of the first step of the box body processed by the first step of the processing tool of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the first step of the machining tool of this utility model for machining the first step of the housing by machining insert B;

[0029] Figure 9 This is a schematic diagram of the structure of the second step of the box body processed by the second step of the processing tool of this utility model;

[0030] Figure 10 This is a schematic diagram of the structure of the second step of the machining tool of this utility model for machining the second step of the box body using the second step machining insert B;

[0031] Figure 11 This is a schematic diagram of the structure for machining the first, second, and third chamfers of the box body using the machining tool of this utility model;

[0032] Figure 12 This is a schematic diagram of the structure of the first step of the machining tool of this utility model, which is used to process the first step of the housing by machining insert B.

[0033] In the diagram, 1. First chip removal groove; 2. Second chip removal groove; 3. Third chip removal groove; 4. Fourth chip removal groove; 101. External turning insert A; 102. First step machining insert A; 103. First chamfering insert; 104. Second chamfering insert; 105. Third chamfering insert; 201. Second step machining insert A; 301. External turning insert B; 302. First step machining insert B; 303. Third step machining insert; 401. Second step machining insert B; 5. Housing; 6. External cylindrical surface; 7. First step; 8. Second step; 9. First chamfer; 10. Second chamfer; 11. Third chamfer; 12. Third step; 13. Tool body; 14. Tool holder. Detailed Implementation

[0034] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects described and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0035] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0036] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0037] As shown in the figure, the technical solution provided by this utility model is as follows: A multi-station machining tool for machining worm gear holes in a housing includes a tool holder 14 and a tool body 13. The tool body 13 is fixedly connected to one end of the tool holder 14. A cutting tool assembly is provided on the tool body 13. The cutting tool assembly includes an outer diameter machining tool A101, an outer diameter machining tool B301, a first step machining tool A102, a first step machining tool B302, a first chamfering tool 103, a second chamfering tool 104, a third chamfering tool 105, a second step machining tool A201, and a second step machining tool. B401 and the third step machining insert 303; the first step machining insert A102 and the first step machining insert B302 have the same rotation diameter, the second step machining insert A201 and the second step machining insert B401 have the same rotation diameter; the outer circle machining insert A101 and the outer circle machining insert B301 have the same rotation diameter; the first step machining insert A102, the second step machining insert A201 and the third step machining insert 303 are arranged sequentially from front to back along the axial direction on the tool body 13, and the rotation diameter increases sequentially.

[0038] The tool body 13 is provided with a first chip removal groove 1, a second chip removal groove 2, a third chip removal groove 3, and a fourth chip removal groove 4. The outer diameter machining insert A101, the first step machining insert A102, the first chamfering insert 103, the second chamfering insert 104, and the third chamfering insert 105 are installed in the first chip removal groove 1; the second step machining insert A201 is installed in the second chip removal groove 2; the outer diameter machining insert B301, the first step machining insert B302, and the third step machining insert 303 are installed in the third chip removal groove 3; and the second step machining insert B401 is installed in the fourth chip removal groove 4. The first chip removal groove 1 handles the chips generated from outer diameter, first step, and chamfering machining; the third chip removal groove 3 handles the chips generated from outer diameter, first step, and third step machining. The outer diameter machining, step machining, and chamfering inserts are distributed to different chip removal grooves according to the machining sequence and chip characteristics, avoiding mixing of chips from different processes that could cause blockage or scratches on the machined surface. In addition, the first step machining insert A102 / B is placed in the first and third chip removal grooves 3 to form a symmetrical structure, and the second step machining insert A201 / B is placed in the second and fourth chip removal grooves 4 to form a symmetrical structure. This not only balances the centrifugal force and vibration during the machining process and improves the stability of high-speed machining, but also ensures the flatness of the step surface by cutting in pairs and using the symmetrical structure to offset the radial force.

[0039] The blade in the blade assembly is detachably mounted on the blade body 13 by a locking screw, which facilitates individual replacement after wear and reduces maintenance costs.

[0040] The handle 14 and the blade body 13 are integrally formed, which can eliminate the connection gap, improve the overall rigidity, and reduce the impact of vibration on accuracy.

[0041] The outer diameter machining insert A101, the first chamfering insert 103, the second chamfering insert 104, the third chamfering insert 105, the outer diameter machining insert B301, and the third step machining insert 303 are arranged in a triangular structure with triangular grooves at the corresponding insert mounting locations on the tool body 13, and the inserts are placed inside the triangular grooves. This triangular groove and insert structure, through the three-point positioning principle, improves the stability and impact resistance of the insert installation.

[0042] The cutting inserts in the first step machining insert A102, the first step machining insert B302, the second step machining insert A201, and the second step machining insert B401 have a quadrilateral structure. A quadrilateral groove is provided at the corresponding insert mounting location on the tool body 13, and the insert is placed inside the quadrilateral groove. The quadrilateral structure of the inserts used for cutting the first and second steps provides a larger contact surface and improves impact resistance.

[0043] The worm gear hole is machined on the housing 5 using the machining tool of this utility model. Specifically, the outer circular surface 6, the first step 7, the second step 8, the third step 12, the first chamfer 9, the second chamfer 10, and the third chamfer 11 need to be machined on the housing 5. The specific machining method is as follows:

[0044] First, during the processing, such as Figure 5 Figure 6 As shown, the outer diameter machining insert and the outer diameter machining insert first machine the outer diameter surface of the workpiece;

[0045] After the tool penetrates deep into the workpiece, such as Figure 7 Figure 8 As shown, the first step machining insert and the first step machining insert 2 machine the first step of the workpiece;

[0046] Then, as Figure 9 Figure 10 As shown, the second-step machining insert and the second-step machining insert machine the second step of the workpiece;

[0047] When machining the workpiece to the specified size using a second-stage machining insert, such as... Figure 11 As shown, the first chamfering insert 103 processes the first chamfer to the specified size; the second chamfering insert 104 processes the second chamfer to the specified size; and the third chamfering insert 105 processes the third chamfer to the specified size.

[0048] like Figure 12 As shown, the third-step machining insert 303 processes the workpiece to the specified size on the third step, and the workpiece machining is now complete.

[0049] The machining tool of this utility model includes an outer circle machining insert, a three-stage step machining insert, and a three-stage chamfering insert, which can cover the machining requirements of outer circle, step surface, and chamfer. The paired inserts have equal rotation diameters to ensure symmetrical machining and avoid vibration and errors. Using the machining tool of this utility model, the outer circle, first step, second step, third step, first chamfer, second chamfer, and third chamfer of the worm gear hole of the housing can be machined in one go without tool changing, avoiding the accumulation of errors from multiple clamping, which helps to ensure product accuracy. It integrates the machining of outer circle, three-stage step, and chamfer, saving tool changing time and machining time.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station machining tool for machining worm gear holes in a housing, characterized in that, It includes a tool holder (14) and a tool body (13), the tool body (13) being connected to one end of the tool holder (14), and a blade assembly being provided on the tool body (13). The blade assembly includes an outer diameter machining blade A (101), an outer diameter machining blade B (301), a first step machining blade A (102), a first step machining blade B (302), a first chamfering blade (103), a second chamfering blade (104), a third chamfering blade (105), a second step machining blade A (201), a second step machining blade B (401), and a third step machining blade (303). The first step machining insert A (102) and the first step machining insert B (302) have the same rotation diameter; the second step machining insert A (201) and the second step machining insert B (401) have the same rotation diameter; the outer circle machining insert A (101) and the outer circle machining insert B (301) have the same rotation diameter; The first step machining insert A (102), the second step machining insert A (201), and the third step machining insert (303) are arranged sequentially from front to back along the axial direction on the cutter body (13), and the rotation diameter increases sequentially.

2. The multi-station machining tool for machining worm gear holes in a housing according to claim 1, characterized in that, The tool body (13) is provided with a first chip removal groove (1), a second chip removal groove (2), a third chip removal groove (3) and a fourth chip removal groove (4). The outer circle machining insert A (101), the first step machining insert A (102), the first chamfering insert (103), the second chamfering insert (104) and the third chamfering insert (105) are installed in the first chip removal groove (1). The second step machining insert A (201) is installed in the second chip removal groove (2); The outer diameter machining insert B (301), the first step machining insert B (302), and the third step machining insert (303) are installed in the third chip removal groove (3); The second step machining insert B (401) is installed in the fourth chip removal groove (4).

3. The multi-station machining tool for machining worm gear holes in a housing according to claim 1 or 2, characterized in that, The blade in the blade assembly is detachably mounted on the blade body (13) by means of a locking screw.

4. The multi-station machining tool for machining worm gear holes in a housing according to claim 3, characterized in that, The handle (14) and the blade body (13) are integrally formed.

5. The multi-station machining tool for machining worm gear holes in a housing according to claim 4, characterized in that, The outer circle machining insert A (101), the first chamfering insert (103), the second chamfering insert (104), the third chamfering insert (105), the outer circle machining insert B (301), and the third step machining insert (303) are triangular in structure. The corresponding insert mounting positions on the cutter body (13) are provided with triangular grooves, and the inserts are placed inside the triangular grooves.

6. The multi-station machining tool for machining worm gear holes in a housing according to claim 5, characterized in that, The blades in the first step machining blade A (102), the first step machining blade B (302), the second step machining blade A (201) and the second step machining blade B (401) are quadrilateral structures. A quadrilateral groove is provided at the corresponding blade mounting position on the blade body (13), and the blade is placed inside the quadrilateral groove.

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