Reverse chip removal tool for machining steering gear shell

Abstract

The utility model provides a reverse chip removal cutter for machining a steering gear shell, which relates to the technical field of machining of the steering gear shell and comprises a rough cutter body, a cutter handle is welded on the lower end face of the rough cutter body, a recoil inner-cooling slotted hole is arranged in the middle of the inner side of the cutter handle, and the side end of the rough cutter body is connected with a stop block through a fixing shaft. A chip groove is formed in the outer side face of the rough cutter body, a first inner cooling groove, a second inner cooling groove and a third inner cooling groove are formed in the rough cutter body, and a first inner cooling opening, a second inner cooling opening and a third inner cooling opening are formed in the groove face of the chip groove. The second inner cooling groove and the third inner cooling groove are communicated with the first inner cooling opening, the second inner cooling opening and the third inner cooling opening. The problems that when a workpiece is vertically clamped and machined, cuttings fall down under the influence of gravity to pollute a positioning datum plane, and residual aluminum cuttings are easily blown into a gap of a clamping part to affect the chip removal effect when the aluminum cuttings are cleaned by blowing are solved.

Description

A reverse chip removal tool for machining steering gear housings Technical Field

[0001] This utility model relates to the field of steering gear housing processing technology, specifically to a reverse chip removal tool for processing steering gear housings. Background Technology

[0002] During the machining of the pressure block holes in the steering gear housing, some products are machined on horizontal machining centers with the workpiece clamped and positioned vertically. The conventional machining process uses a 4-flute roughing tool and a 6-flute finishing reamer to complete the pressure block hole machining. During this process, due to the straight flute design of the tool, the chips are mainly discharged downwards along the tool axis. However, when the workpiece is clamped vertically, the chips fall downwards due to gravity, contaminating the positioning reference surface. Air blowing to remove aluminum chips can easily lead to residual aluminum chips being blown into the gaps of the clamping components, affecting the chip removal effect. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a reverse chip removal tool for machining steering gear housings is provided to solve the problems that when the workpiece is vertically clamped for machining, the chips fall downwards due to gravity and contaminate the positioning reference surface, and blowing aluminum chips can easily cause residual aluminum chips to be blown into the gaps of the clamping components, affecting the chip removal effect.

[0004] To achieve the above objectives, a reverse chip removal tool for machining a steering gear housing is provided, comprising: a roughing tool body, wherein a tool shank is welded to the lower end face of the roughing tool body.

[0005] The inner side of the tool holder is provided with a back-flush internal cooling groove hole. The side end of the roughing tool body is connected to a stop block through a fixed shaft. The outer side of the roughing tool body is provided with a chip removal groove. The inside of the roughing tool body is provided with a first internal cooling groove, a second internal cooling groove and a third internal cooling groove. The surface of the chip removal groove is provided with a first internal cooling opening, a second internal cooling opening and a third internal cooling opening. The second internal cooling groove and the third internal cooling groove are connected to the first internal cooling opening, the second internal cooling opening and the third internal cooling opening.

[0006] Furthermore, a sub-blade mounting hole is provided in the middle of the upper end face of the roughing tool body, and the chip removal grooves are distributed circumferentially at the outer end of the sub-blade mounting hole.

[0007] Furthermore, a PCD insert is mounted on the upper end of the roughing tool body via a fastening screw.

[0008] Furthermore, the stop block is embedded and fitted onto the surface of the chip removal groove; and the third internal cooling port is located on the inclined surface of the stop block.

[0009] Furthermore, the upper end of the backflush internal cooling groove hole is connected to the second and third internal cooling grooves through the first internal cooling groove.

[0010] Furthermore, the first internal cooling port is located at the bottom arc end of the chip removal groove; and the lower end of the first internal cooling port is connected to the second internal cooling groove.

[0011] Furthermore, the first internal cooling port, the second internal cooling port, and the third internal cooling port are arranged from bottom to top on the surface of the chip removal groove.

[0012] The beneficial effects of this utility model are as follows: the anti-chip removal tool for steering gear housing machining utilizes the back-flush internal cooling groove holes to deliver cutting fluid to the first, second, and third internal cooling grooves. The cutting fluid ejected through the third internal cooling port pushes the stop block to prevent excessively large chips from falling. The high-pressure back-flush cutting fluid at the internal cooling port and the stop block discharge the chips that would otherwise fall into the chip removal groove due to gravity outward along the axis of the chip removal groove. This effectively prevents the chips generated during steering gear housing machining from falling downward and accumulating at the fixture positioning seat, reduces the downward chip discharge, ensures more stable clamping of the clamped parts, and improves the production efficiency of steering gear housing machining. Attached Figure Description

[0013] Figure 1 is a front view cross-sectional view of the anti-chip removal tool for machining the steering gear housing according to an embodiment of the present invention.

[0014] Figure 2 is a front view cross-sectional structural diagram of the roughing tool body according to an embodiment of the present invention.

[0015] Figure 3 is a top view of the roughing tool body of this utility model embodiment.

[0016] Figure 4 is a front view of the block structure according to an embodiment of the present invention.

[0017] In the diagram: 1. Roughing tool body; 11. Sub-tool mounting hole; 2. Tool holder; 21. Backflush internal cooling groove hole; 3. PCD insert; 31. Fastening screw; 4. Stop block; 41. Fixed shaft; 5. Chip removal groove; 6. First internal cooling groove; 61. Second internal cooling groove; 62. Third internal cooling groove; 63. First internal cooling port; 64. Second internal cooling port; 65. Third internal cooling port. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Referring to Figures 1 to 4, this utility model provides a reverse chip removal tool for machining a steering gear housing, comprising: a roughing tool body 1, with a tool holder 2 welded to the lower end face of the roughing tool body 1.

[0020] The inner side of the handle 2 is provided with a back-flush internal cooling groove hole 21. The side end of the roughing tool body 1 is connected to a stop block 4 through a fixed shaft 41. The outer side of the roughing tool body 1 is provided with a chip removal groove 5. The inside of the roughing tool body 1 is provided with a first internal cooling groove 6, a second internal cooling groove 61 and a third internal cooling groove 62. The surface of the chip removal groove 5 is provided with a first internal cooling opening 63, a second internal cooling opening 64 and a third internal cooling opening 65. The second internal cooling groove 61 and the third internal cooling groove 62 are connected to the first internal cooling opening 63, the second internal cooling opening 64 and the third internal cooling opening 65.

[0021] When the vertically clamped reverse chip removal tool is machining the housing hole, the cutting fluid is delivered to the first internal cooling groove 6, the second internal cooling groove 61, and the third internal cooling groove 62 through the supercooled backflushing internal cooling groove hole 21. The first internal cooling port 63, the second internal cooling port 64, and the third internal cooling port 65 eject the cutting fluid. The cutting fluid ejected through the third internal cooling port 65 pushes the stop block 4 to prevent large chips from falling. The high-pressure backflushing cutting fluid in the internal cooling port and the stop block 4 discharge the chips that originally fell into the chip removal groove 5 due to gravity outward along the axis of the chip removal groove 5. This effectively prevents the chips generated during the machining of the steering gear housing from falling downward and accumulating at the fixture positioning seat, reduces the downward discharge of machining chips, ensures more stable clamping of the clamped parts, and improves the production efficiency of the steering gear housing machining.

[0022] In this embodiment, a sub-blade mounting hole 11 is provided in the middle of the upper end face of the roughing tool body 1, and chip removal grooves 5 are distributed circumferentially at the outer end of the sub-blade mounting hole 11. A PCD insert 3 is mounted on the upper end of the roughing tool body 1 by a fastening screw 31.

[0023] As a preferred embodiment, the sub-tool mounting hole 11 facilitates the assembly of the sub-tool. The chip removal groove 5 facilitates the removal of chips generated during machining along the tool groove surface. The PCD insert 3 is made of synthetic diamond (PCD), which is relatively sharp and facilitates chip breaking more easily.

[0024] In this embodiment, the stop block 4 is embedded and fitted onto the surface of the chip removal groove 5; and the third internal cooling port 65 is located on the inclined surface of the stop block 4. The upper end of the backflush internal cooling groove hole 21 is connected to the second internal cooling groove 61 and the third internal cooling groove 62 through the first internal cooling groove 6. The first internal cooling port 63 is located at the bottom arc end of the chip removal groove 5; and the lower end of the first internal cooling port 63 is connected to the second internal cooling groove 61. The first internal cooling port 63, the second internal cooling port 64, and the third internal cooling port 65 are arranged from bottom to top on the surface of the chip removal groove 5.

[0025] As a preferred implementation, the backflush internal cooling groove 21 delivers high-pressure cutting fluid to the internal cooling groove, causing the cutting fluid ejected from multiple sets of internal cooling ports to push the waste chips and baffles 4 to rotate. The outwardly rotating baffles 4 discharge larger waste chips outward, and the waste chips generated during machining are discharged outward along the axial direction of the chip removal groove 5. This effectively prevents the waste chips generated during the machining of the steering gear housing from falling downward and accumulating at the fixture positioning seat, ensuring more stable clamping of the clamped parts, improving the production efficiency of steering gear housing machining, and the overall structure of this backflush tool is simple, reducing costs.

[0026] This utility model of a reverse chip removal tool for steering gear housing machining effectively solves the problems of chips falling downwards and contaminating the positioning reference surface due to gravity during vertical workpiece clamping and machining, and the problem that blowing aluminum chips can easily lead to residual aluminum chips being blown into the gaps of the clamping components, affecting the chip removal effect. It effectively prevents waste chips generated during steering gear housing machining from falling downwards and accumulating at the fixture positioning seat, reduces the downward chip removal of machining waste chips, ensures more stable clamping of the clamping components, and improves the production efficiency of steering gear housing machining. It is suitable for reverse chip removal tools for steering gear housing machining.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reverse chip-discharge tool for machining a steering gear housing, comprising: The roughing tool body (1) has a handle (2) welded to its lower end face. The handle (2) has a back-flush internal cooling groove hole (21) in the middle of its inner side. The side end of the roughing tool body (1) is connected to a stop block (4) via a fixed shaft (41). The outer side of the roughing tool body (1) has a chip removal groove (5). The inside of the roughing tool body (1) has a first internal cooling groove (6), a second internal cooling groove (61), and a third internal cooling groove (62). The surface of the chip removal groove (5) has a first internal cooling port (63), a second internal cooling port (64), and a third internal cooling port (65). The second internal cooling groove (61) and the third internal cooling groove (62) are connected to the first internal cooling port (63), the second internal cooling port (64), and the third internal cooling port (65).

2. The reverse chip removal tool for machining a steering gear housing according to claim 1, characterized in that, The upper end face of the roughing tool body (1) is provided with a sub-tool mounting hole (11), and the chip removal groove (5) is circumferentially distributed at the outer end of the sub-tool mounting hole (11).

3. The reverse chip removal tool for machining a steering gear housing according to claim 1, characterized in that, The upper end of the coarse tool body (1) is fitted with a PCD blade (3) by a fastening screw (31).

4. The reverse chip removal tool for machining a steering gear housing according to claim 1, characterized in that, The stop block (4) is embedded and fitted into the groove surface of the chip removal groove (5); and the third internal cooling port (65) is located on the inclined surface of the stop block (4).

5. A reverse chip removal tool for machining a steering gear housing according to claim 1, characterized in that, The upper end of the backflush internal cooling groove hole (21) is connected to the second internal cooling groove (61) and the third internal cooling groove (62) through the first internal cooling groove (6).

6. The reverse chip removal tool for machining a steering gear housing according to claim 1, characterized in that, The first internal cooling port (63) is located at the bottom arc end of the chip removal groove (5); and the lower end of the first internal cooling port (63) is connected to the second internal cooling groove (61).

7. A reverse chip removal tool for machining a steering gear housing according to claim 1, characterized in that, The first internal cooling port (63), the second internal cooling port (64) and the third internal cooling port (65) are arranged from bottom to top on the surface of the chip removal groove (5).

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