Composite tool for machining mounting hole of automobile steering device shell

Abstract

The utility model relates to an automobile steering gear shell mounting hole machining compound tool which comprises a tool bar and a tool body, the tool body and the tool bar are coaxially distributed, and one end of the tool body is fixedly connected with one end of the tool bar. A plurality of cutting edges are evenly arranged on the cutter body in the circumferential direction of the cutter body at intervals, and 45-degree chamfers are arranged at the two ends of each cutting edge respectively. The inner hole / groove chamfering tool has the advantages that the structure is simple, the design is reasonable, simultaneous machining of an inner hole / groove and a chamfer can be completed only through one tool, the machining coaxiality can be guaranteed, the machining precision is higher, fault occurrence points are reduced, and the product percent of pass is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, specifically to a composite tool for machining mounting holes in automotive steering gear housings. Background Technology

[0002] A car steering system is a machine that assists the driver in turning the steering wheel, reducing the effort required and making driving easier and more convenient. It is mainly divided into rack and pinion steering and worm gear steering. There are roughly three types of power steering systems on the market: electric power steering, rack and pinion hydraulic power steering, and electro-hydraulic power steering.

[0003] Currently, the conventional method for machining mounting holes in automotive steering gear housings requires the use of end mills, face mills, and chamfering cutters. After machining the end face, the tool is changed to machine the inner hole / groove, and then the tool is changed again to machine the chamfer. In addition, the four-axis rotary table needs to be rotated several times, making tool changes complex and machining efficiency low. Utility Model Content

[0004] This utility model provides a composite tool for machining mounting holes in automotive steering gear housings, aiming to solve the problems in the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A composite tool for machining mounting holes in an automotive steering gear housing includes a tool holder and a tool body. The tool body is coaxially distributed with the tool holder, and one end of the tool body is fixedly connected to one end of the tool holder. The tool body has multiple cutting edges evenly spaced along its circumference, and both ends of the multiple cutting edges are respectively provided with a 45° chamfer.

[0007] The beneficial effects of this utility model are: during the processing, the parts that need to be processed for the mounting holes include two holes: a round hole and a slotted hole, and the upper and lower end faces, the inner hole / slot and the upper and lower chamfers need to be processed.

[0008] The positioning tool is concentric with the inner hole and feeds directly to machine the inner hole. After reaching the depth, it uses circular interpolation to simultaneously machine the inner hole (groove) and the upper and lower chamfers.

[0009] This utility model has a simple structure and reasonable design. It can complete the machining of inner holes / grooves and chamfers at the same time with only one tool, which can ensure the coaxiality of the machining, make the machining accuracy higher, reduce the failure points, and improve the product qualification rate.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the 45° chamfers at both ends of each blade are relatively distributed.

[0012] The advantages of adopting the above-mentioned further solution are that the structure is simple, the two 45° chamfers on each cutting edge are reasonably distributed, and the chamfering is completed at the same time as the inner hole is processed, resulting in high efficiency.

[0013] Furthermore, the 45° chamfer at both ends of each blade forms a trapezoidal structure with the corresponding blade.

[0014] The advantages of adopting the above-mentioned further solution are that the structure is simple, the two 45° chamfers on each cutting edge are reasonably distributed, and the chamfering is completed at the same time as the inner hole is processed, resulting in high efficiency.

[0015] Furthermore, the blade holder and the blade body are respectively provided with water passages extending through both ends, and the water passages in the blade holder and the blade body are coaxially distributed; a plurality of blades are respectively provided with a group of drainage holes communicating with the corresponding water passages.

[0016] The beneficial effect of adopting the above-mentioned further solution is that water is introduced through the above-mentioned water passage during the processing to clean up the waste generated during the processing and ensure the quality of the workpiece processing.

[0017] Furthermore, each of the drainage hole groups includes at least one through drainage hole, and one end of each drainage hole is connected to the corresponding water passage.

[0018] The advantages of adopting the above-mentioned further solution are that the structure is simple, the drainage hole is reasonably designed, and water can pass through to clean up the waste generated during the processing and ensure the quality of the workpiece processing.

[0019] Furthermore, the included angle between each of the drainage holes and the corresponding water passage is in the range of 15-25°.

[0020] The advantages of adopting the above-mentioned further solution are that the structure is simple, the angle distribution of the drainage holes is reasonable, and the processing quality is guaranteed.

[0021] Furthermore, each of the drainage hole groups includes a plurality of drainage holes, which are distributed along the direction from one end of the corresponding blade to the other end.

[0022] The advantages of adopting the above-mentioned further solution are that the structure is simple, the number of drainage holes is reasonably designed, and the efficiency of waste discharge is guaranteed.

[0023] Furthermore, the multiple drainage holes distributed on the multiple blades are staggered along the axial direction of the corresponding water passage.

[0024] The advantages of adopting the above-mentioned further solution are that the structure is simple, the distribution of drainage holes is more reasonable, and the efficiency of waste discharge is further guaranteed.

[0025] Furthermore, the multiple blades are distributed in a spiral shape.

[0026] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the distribution of the cutting edges is more reasonable, and the quality of workpiece processing is guaranteed.

[0027] Furthermore, the other end of the blade is provided with a through-blade, the included angle of which is 120-140°.

[0028] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. When the hole on the workpiece is not fully penetrated, the through-cutting edge can be used for further processing to ensure the effect of hole processing. Attached Figure Description

[0029] Figure 1 This is an internal sectional view of the present invention;

[0030] Figure 2 This is a schematic diagram of the end of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Blade holder; 2. Blade body; 3. Blade edge; 4. Water passage; 5. Drain hole; 6. Through blade. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a composite tool for machining mounting holes in automotive steering gear housings, including a tool holder 1 and a tool body 2. The tool body 2 is coaxially distributed with the tool holder 1, and one end of the tool body 2 is fixedly connected to one end of the tool holder 1. The tool body 2 is provided with a plurality of cutting edges 3 evenly spaced along its circumference, and the two ends of the plurality of cutting edges 3 are respectively provided with a 45° chamfer.

[0039] During the processing, the parts that need to be machined for the mounting holes include two holes: one round hole and one slotted hole. The upper and lower end faces, the inner hole / slot, and the upper and lower chamfers need to be machined.

[0040] The positioning tool is concentric with the inner hole and feeds directly to machine the inner hole. After reaching the depth, it uses circular interpolation to simultaneously machine the inner hole (groove) and the upper and lower chamfers.

[0041] Preferably, in this embodiment, the above-mentioned tool holder 1 and tool body 2 are respectively cylindrical rod-shaped structures.

[0042] In addition, the aforementioned tool holder 1 and tool body 2 adopt an integrated structure.

[0043] This embodiment has a simple structure and reasonable design. It only requires one tool to complete the simultaneous machining of the inner hole / groove and the chamfer, which can ensure the coaxiality of the machining, make the machining accuracy higher, reduce the failure points, and improve the product qualification rate.

[0044] Example 2

[0045] Based on Example 1, in this example, the 45° chamfers at both ends of each blade 3 are relatively distributed.

[0046] The design is simple in structure, and the two 45° chamfers on each cutting edge 3 are reasonably distributed, ensuring that the chamfering is completed while the inner hole is being machined, resulting in high efficiency.

[0047] Example 3

[0048] Based on Embodiment 2, in this embodiment, the 45° chamfer at both ends of each blade 3 forms a trapezoidal structure with the corresponding blade 3.

[0049] The design is simple in structure, and the two 45° chamfers on each cutting edge 3 are reasonably distributed, ensuring that the chamfering is completed while the inner hole is being machined, resulting in high efficiency.

[0050] Example 4

[0051] Based on the above embodiments, in this embodiment, the blade shank 1 and the blade body 2 are respectively provided with water passages 4 extending through both ends, and the water passages 4 in the blade shank 1 and the blade body 2 are coaxially distributed; a plurality of blade edges 3 are respectively provided with drainage hole groups communicating with the corresponding water passages 4.

[0052] During the processing, water is introduced through the aforementioned water channel 4 to clean up the waste generated during the processing and ensure the quality of the workpiece processing.

[0053] Preferably, in this embodiment, the water passage 4 is a circular cavity.

[0054] Example 5

[0055] Based on embodiment 4, in this embodiment, each of the drainage hole groups includes at least one through drainage hole 5, and one end of each drainage hole 5 is connected to the corresponding water passage 4.

[0056] The design features a simple structure and a well-designed drainage hole 5 that allows water to pass through, thus cleaning up waste generated during processing and ensuring the quality of the workpiece.

[0057] Preferably, in this embodiment, each drainage hole has a circular channel-like structure.

[0058] Example 6

[0059] Based on Example 5, in this example, the included angle between each drainage hole 5 and the corresponding water passage 4 is in the range of 15-25°.

[0060] The design is simple in structure, and the angle distribution of the drainage holes 5 is reasonable, ensuring the quality of processing.

[0061] Example 7

[0062] Based on any one of Embodiments 5 to 6, in this embodiment, each of the drainage hole groups includes a plurality of drainage holes 5, and the plurality of drainage holes 5 are distributed along the direction from one end of the blade 3 to the other end.

[0063] The scheme has a simple structure and the number of drainage holes 5 is reasonably designed to ensure efficient waste discharge.

[0064] Example 8

[0065] Based on Embodiment 7, in this embodiment, the multiple drainage holes 5 distributed on the multiple blades 3 are staggered along the axial direction of the corresponding water passage 4.

[0066] The scheme has a simple structure and the distribution of drainage holes 5 is relatively reasonable, which further ensures the efficiency of waste discharge.

[0067] Preferably, in this embodiment, each of the above-mentioned drainage hole groups includes two drainage holes 5.

[0068] Example 9

[0069] Based on the above embodiments, in this embodiment, the plurality of blades 3 are distributed in a spiral shape.

[0070] This design has a simple structure and a reasonable distribution of cutting edges, ensuring the quality of workpiece machining.

[0071] Example 10

[0072] Based on the above embodiments, in this embodiment, the other end of the blade body 2 is provided with a through blade 6, and the included angle of the through blade 6 is 120-140°.

[0073] The solution has a simple structure and reasonable design. When the hole on the workpiece is not fully penetrated, the through-cutting edge 6 can be used for further processing to ensure the effect of hole processing.

[0074] Preferably, in this embodiment, the included angle of the through-blade 6 is 130°.

[0075] The working principle of this utility model is as follows:

[0076] During the machining process, the cutting tool is concentric with the inner hole and feeds directly to machine the inner hole. After reaching the depth, circular interpolation is used to simultaneously machine the inner hole (groove) and the upper and lower chamfers.

[0077] The advantages of this utility model are as follows:

[0078] 1. Cost-saving: Only one set of cutting tools is required, which can be used to machine internal holes / grooves and chamfers.

[0079] 2. Simple debugging and operation: Just feed the cutting tool after it reaches the corresponding coordinates, and then perform circular interpolation machining after completion.

[0080] 3. Improve efficiency and precision: Save tool changing time. Combining two tools into one tool, assuming a tool changing time of 4 seconds per tool, can save nearly 4 seconds. At the same time, it can save about 9 seconds of rotation time for a four-axis rotary table. In addition, combining the tools can ensure machining coaxiality, resulting in higher machining precision, reducing the number of failure points, and improving the product qualification rate.

[0081] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0082] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0083] 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 composite tool for machining mounting holes in automotive steering gear housings, characterized in that: It includes a shank (1) and a blade body (2). The blade body (2) is coaxially distributed with the shank (1), and one end of the blade body (2) is fixedly connected to one end of the shank (1). The blade body (2) has multiple blades (3) evenly spaced along its circumference, and the two ends of the multiple blades (3) are respectively provided with a 45° chamfer.

2. The composite tool for machining mounting holes in automotive steering gear housings according to claim 1, characterized in that: The 45° chamfers at both ends of each of the blades (3) are distributed opposite to each other.

3. The composite tool for machining mounting holes in automotive steering gear housings according to claim 2, characterized in that: The 45° chamfer at both ends of each blade (3) forms a trapezoidal structure with the corresponding blade (3).

4. The composite tool for machining mounting holes in automotive steering gear housings according to any one of claims 1-3, characterized in that: The blade (1) and the blade body (2) are respectively provided with water passages (4) that pass through both ends, and the water passages (4) in the blade (1) and the blade body (2) are coaxially distributed; a plurality of blades (3) are respectively provided with drainage hole groups that communicate with the corresponding water passages (4).

5. The composite tool for machining mounting holes in automotive steering gear housings according to claim 4, characterized in that: Each of the drainage hole groups includes at least one through drainage hole (5), and one end of each drainage hole (5) is connected to the corresponding water passage (4).

6. The composite tool for machining mounting holes in automotive steering gear housings according to claim 5, characterized in that: The included angle between each of the drainage holes (5) and the corresponding water passage (4) is in the range of 15-25°.

7. The composite tool for machining mounting holes in automotive steering gear housings according to claim 5, characterized in that: Each of the drainage hole groups includes a plurality of drainage holes (5), which are distributed along the direction from one end of the corresponding blade (3) to the other end.

8. The composite tool for machining mounting holes in automotive steering gear housings according to claim 7, characterized in that: The multiple drainage holes (5) distributed on the multiple blades (3) are staggered along the axial direction of the corresponding water passage (4).

9. The composite tool for machining mounting holes in automotive steering gear housings according to any one of claims 1-3, characterized in that: The multiple blades (3) are distributed in a spiral shape.

10. The composite tool for machining mounting holes in automotive steering gear housings according to any one of claims 1-3, characterized in that: The other end of the blade (2) is provided with a through blade (6), and the included angle of the through blade (6) is 120-140°.

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