CN220445082U - Inner turning tool for machining deep holes of steering gear housing - Google Patents
Inner turning tool for machining deep holes of steering gear housing Download PDFInfo
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- CN220445082U CN220445082U CN202322116848.8U CN202322116848U CN220445082U CN 220445082 U CN220445082 U CN 220445082U CN 202322116848 U CN202322116848 U CN 202322116848U CN 220445082 U CN220445082 U CN 220445082U
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Abstract
The utility model relates to an inner turning tool for deep hole machining of a steering gear shell, which is used for deep hole machining of an automobile steering gear shell and comprises a cutter bar and a cutter head fixedly connected to the end head of the cutter bar, wherein the cutter bar comprises a cutter bar body and a high-strength core rod embedded in the cutter bar body, the cutter bar body is made of common threaded steel, and the high-strength core rod is made of ultra-high hard bearing steel; the side surface of the cutter head is provided with a cutter seat assembly hole, and a cutter seat is fixedly inserted into the cutter seat assembly hole; the outer side of the tool apron is provided with a turning tool assembly groove, a turning tool is embedded in the turning tool assembly groove, and the tool apron is fixedly connected with the turning tool through a bolt; the tool apron assembly hole is an inclined hole, and an angle of 100-110 degrees is formed between the turning tool and the tool bar. The cutter bar with the high-strength core rod and the inclined insert type cutter holder are adopted, so that the cutter withdrawal during processing can be effectively avoided, and the processing precision is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of machining tools of automobile steering machines, and particularly relates to an inner turning tool for machining deep holes of a steering machine shell.
Background
The automobile steering gear is also called as steering gear, which is an automobile part for helping the driver to exert force when the driver turns the steering wheel so as to lighten the force applied by the driver when the driver turns and achieve the purpose of easy and convenient driving. The steering gear of the automobile is mainly divided into a gear rack type steering structure and a worm gear type steering structure. There are three general types of power steering devices currently available on the market: electric motor power steering, rack and pinion type hydraulic power steering and electric hydraulic power steering.
The steering gear of the automobile is not only a steering power assisting mechanism of the automobile, but also a safety mechanism of the automobile, and the working stability of the steering gear is directly related to driving safety. At present, the shell of the automobile steering gear is mainly made of aluminum alloy through pressure casting processing. After casting the housing, a series of machining operations are required to be performed on the housing. The structure of the steering gear makes the shell have deep holes, and polishing and finishing of the deep holes are needed to be completed by turning.
Because the steering wheel casing of aluminum alloy, after the die casting, bulk strength and hardness are all great, and current turning tool carries out the deep hole machine processing, can appear the phenomenon of moving back, and machining precision is difficult to guarantee moreover, exists certain rejection rate during processing. This not only increases the manufacturing cost, but also seriously affects the production efficiency.
Disclosure of Invention
Aiming at least one technical problem in the prior art, the utility model provides an inner turning tool for deep hole machining of a steering gear shell, which adopts a tool bar with a high-strength core rod and an inclined insert type tool apron design, so that tool withdrawal during machining can be effectively avoided, and machining precision is effectively improved.
The technical scheme for solving the technical problems is as follows:
the inner turning tool for deep hole machining of the steering gear box shell comprises a cutter bar and a cutter head fixedly connected to the end of the cutter bar, wherein the cutter bar comprises a cutter bar body and a high-strength core rod embedded in the cutter bar body, the cutter bar body is made of common screw steel, and the high-strength core rod is made of ultra-high hard bearing steel; the side surface of the cutter head is provided with a cutter seat assembly hole, and a cutter seat is fixedly inserted into the cutter seat assembly hole; the outer side of the tool apron is provided with a turning tool assembly groove, a turning tool is embedded in the turning tool assembly groove, and the tool apron is fixedly connected with the turning tool through a bolt; the tool apron assembly hole is an inclined hole, and an angle of 100-110 degrees is formed between the turning tool and the tool bar.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, a cutter head assembling screw hole is formed in the top of the cutter bar body, an external thread part matched with the cutter head is arranged at the bottom of the cutter head, and the cutter head is in threaded connection with the top of the cutter bar body.
Further, a cutter seat fixing screw hole is formed in the cutter head, a cutter seat screw hole matched with the cutter seat is correspondingly formed in the cutter seat, and the cutter head and the cutter seat are fixed through bolts.
Further, the tool apron is in a cuboid shape, and the shape of the tool apron assembly hole is matched with the tool apron.
Furthermore, the cutter head is made of ultra-high hard bearing steel.
Further, the cutter bar body and the high-strength core rod are fixed in an interference fit mode.
Further, a plurality of lathe tool assembly grooves are formed.
The beneficial effects of the utility model are as follows: according to the embedded type cutter bar, the high-strength core rod made of the ultra-high hard bearing steel is embedded in the cutter bar body, so that the hardness of the cutter bar is effectively improved, the problems of tool withdrawal, shaking and the like caused by deformation of the cutter bar due to machining stress during machining are avoided, the machining precision is effectively ensured, and the embedded type cutter bar is designed, so that the strength of the cutter bar can be ensured, and the breakage of the cutter bar due to overlarge machining stress can be effectively avoided; the tool apron adopts the design of the inclined insert type tool apron, so that an inclined angle of 100-110 degrees is formed between the turning tool and the tool apron, the action of reaction stress on the tool apron and the tool apron during processing can be reduced to a certain extent, tool withdrawal is further prevented, and the processing precision is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the tool bar of the present utility model;
in the figure:
1. the cutter bar, 11, the cutter bar body, 12, a high-strength core rod, 13, a cutter head assembling screw hole, 2, a cutter head, 3 and a cutter seat assembling hole, 4, a cutter holder, 5, a lathe tool assembly groove, 6, a cutter holder fixing screw hole, 7, a cutter holder screw hole, 8, a lathe tool fixing screw hole, 9 and a lathe tool.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
Example 1
As shown in fig. 1 and 2, an inner turning tool for deep hole machining of a steering gear housing of the present embodiment is a machining tool dedicated for deep hole machining of an automotive steering gear housing, and belongs to one type of inner turning tool.
The internal turning tool of the embodiment comprises a cutter bar 1 and a cutter head 2 fixedly connected to the end head of the cutter bar 1. The cutter bar 1 adopts a nested structural design, is similar to a steel wrapping method, and comprises a cutter bar body 11 and a high-strength core rod 12 embedded in the cutter bar body 11. The cutter bar body 11 is made of common screw steel, has relatively high strength and stronger toughness, and is not easy to break; the high-strength core rod 12 is made of ultra-high hard bearing steel, has extremely high hardness and is not easy to deform under stress.
The side face of the tool bit 2 of the embodiment is provided with a tool holder assembly hole 3, and the tool holder assembly hole 3 is internally inserted and fixed with a tool holder 4. The tool apron 4 can be in a regular cylinder shape such as a cylinder or a polygonal cylinder, and preferably in a cuboid shape. In order to be firmly fixed and bear processing stress, the shape of the tool holder assembly hole 3 is preferably matched with the shape of the tool holder 4 so as to be favorable for tightly matching and fixing the tool holder assembly hole and the tool holder.
The lathe tool assembly groove 5 has been seted up in the blade holder 4 outside of this embodiment, lathe tool 9 has been put to lathe tool assembly groove 5. The tool apron 4 is provided with a turning tool assembling screw hole 8, the turning tool 9 is provided with a screw hole matched with the turning tool assembling screw hole, and the tool apron 5 is fixedly connected with the turning tool 9 through a bolt.
The tool apron assembly hole 3 in this embodiment is an inclined hole, so as to ensure that an oblique angle of 100-110 degrees is formed between the turning tool 9 and the tool bar 1. The most preferred angle is controlled to be around 105 degrees.
The inner turning tool of the embodiment adopts a cutter bar similar to the design of a steel wrapping method, and adopts a design that a cutter bar body 11 made of high-toughness steel material is wrapped with a high-strength core rod 12 made of high-hardness steel material. Therefore, the cutter bar 1 has extremely high overall hardness, is not easy to deform due to processing stress, can effectively ensure the toughness of the cutter bar 1, cannot be broken due to the processing stress, can effectively improve the processing precision, and avoids tool withdrawal.
In addition, the turning tool 9 of the embodiment adopts inclined assembly and forms a certain oblique angle with the cutter bar 1, so that the influence of processing stress on the cutter bar 1 can be further avoided.
The inner turning tool of the present embodiment may be fabricated by the following method. Machining the cutter bar body 11 and the high-strength core bar 12, wherein a certain machining allowance is reserved between the cutter bar body and the high-strength core bar 12 in size; and then the cutter bar body 11 is heated, the heating temperature is controlled below the annealing temperature, the cutter bar body 11 is inserted into the high-strength core rod 12 after being heated and expanded, and the preparation of the cutter bar 1 is completed after natural cooling. And then the tool bit 2 and the rest parts are assembled, namely the machining assembly of the whole internal turning tool is completed.
Example 2
This embodiment is substantially similar in structure to embodiment 1, except for the modification of the portion of the cutter head 2.
The cutter head 2 of the present embodiment is also made of ultra-high hard bearing steel, so as to ensure the hardness of the cutter head 2.
In addition, the tool bit 2 and the tool bar 1 of the present embodiment are fixed by threaded connection. Specifically, tool bit assembly screw hole 13 has been seted up at cutter arbor body 11 top, tool bit 2 bottom is equipped with the external screw thread portion of looks adaptation with it, tool bit 2 and cutter arbor body 11 top threaded connection. The tool bit 2 is convenient to replace, and the inner turning tool is convenient to maintain.
Example 3
This embodiment is substantially similar in construction to embodiment 2, except for a further modification of the insert holder 4.
In the tool apron 4 of this embodiment, a plurality of turning tool assembling grooves 5 are formed. Preferably, a lathe tool assembly groove 5 is respectively formed at the upper part and the lower part.
Thus, two sets of cutters can be installed, which is beneficial to the requirement of complex processing.
In the utility model, devices and components not described in the structure are all commercially available devices or components.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. The inner turning tool for deep hole machining of the steering gear box is used for machining the inner deep hole of the steering gear box of an automobile and comprises a cutter bar (1) and a cutter head (2) fixedly connected to the end head of the cutter bar (1), and is characterized in that the cutter bar (1) comprises a cutter bar body (11) and a high-strength core rod (12) embedded in the cutter bar body (11), the cutter bar body (11) is made of common screw steel, and the high-strength core rod (12) is made of ultra-high hard bearing steel; the side surface of the cutter head (2) is provided with a cutter seat assembly hole (3), and a cutter seat (4) is fixedly inserted into the cutter seat assembly hole (3); a turning tool assembly groove (5) is formed in the outer side of the tool apron (4), a turning tool (9) is embedded in the turning tool assembly groove (5), and the tool apron (4) is fixedly connected with the turning tool (9) through a bolt; the tool apron assembly hole (3) is an inclined hole, and an angle of 100-110 degrees is formed between the turning tool (9) and the tool bar (1).
2. The inner turning tool for deep hole machining of a steering gear housing according to claim 1, wherein: the tool bit assembly screw hole (13) is formed in the top of the tool bit body (11), an external thread part matched with the tool bit assembly screw hole is formed in the bottom of the tool bit (2), and the tool bit (2) is in threaded connection with the top of the tool bit body (11).
3. The inner turning tool for deep hole machining of a steering gear housing according to claim 1, wherein: the tool bit (2) is provided with a tool holder fixing screw hole (6), the tool holder (4) is correspondingly provided with a tool holder screw hole (7) which is matched with the tool holder fixing screw hole, and the tool bit (2) and the tool holder (4) are fixed through bolts.
4. The inner turning tool for deep hole machining of a steering gear housing according to claim 1, wherein: the tool apron (4) is in a cuboid shape, and the shape of the tool apron assembly hole (3) is matched with the tool apron (4).
5. The inner turning tool for deep hole machining of a steering gear housing according to claim 1, wherein: the cutter head (2) is made of ultra-high hard bearing steel.
6. The inner turning tool for deep hole machining of a steering gear housing according to claim 1, wherein: the cutter bar body (11) and the high-strength core rod (12) are fixed by interference fit.
7. The inner turning tool for deep hole machining of a steering gear housing according to claim 1, wherein: a plurality of lathe tool assembly grooves (5) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322116848.8U CN220445082U (en) | 2023-08-07 | 2023-08-07 | Inner turning tool for machining deep holes of steering gear housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322116848.8U CN220445082U (en) | 2023-08-07 | 2023-08-07 | Inner turning tool for machining deep holes of steering gear housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220445082U true CN220445082U (en) | 2024-02-06 |
Family
ID=89725020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322116848.8U Active CN220445082U (en) | 2023-08-07 | 2023-08-07 | Inner turning tool for machining deep holes of steering gear housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220445082U (en) |
-
2023
- 2023-08-07 CN CN202322116848.8U patent/CN220445082U/en active Active
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