Cutter structure for drilling holes in two ends of rack of automobile steering engine

Abstract

The utility model relates to the technical field of steering systems, in particular to a cutter structure for drilling holes in two ends of a rack of an automobile steering engine. A cutter structure for drilling holes in the two ends of an automobile steering engine rack comprises a cutter handle and is characterized in that a drill bit is transversely embedded in the middle of the cutter handle, and the bottom of the drill bit abuts against the bottom of the cutter handle and is connected with a top stopping bolt; two protrusions are arranged on the two sides of the head of the knife handle respectively, and the side faces of the two protrusions are connected with the blades respectively. The side face of the drill bit abuts against a locking bolt. Compared with the prior art, the cutter structure for drilling the two ends of the rack of the automobile steering engine has the advantages that the structures of the cutter handle and the drill bit are improved, the requirements of procedures of multiple chamfers, planes and drilling can be met at a time, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of steering system technology, specifically a tool structure for drilling holes at both ends of a gear rack in an automobile steering system. Background Technology

[0002] In the manufacturing process of automotive steering gear racks, it is necessary to process double-ended rack parts, which requires a combination of drilling, chamfering, turning, and tapping on both ends of the rack. In order to improve processing efficiency, a set of composite machining drill bits is designed to complete multiple processes at once. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a tool structure for drilling holes at both ends of a car steering gear rack. The improved tool holder and drill bit structure can complete multiple chamfering, planing, and drilling processes in one operation, thereby improving processing efficiency.

[0004] To achieve the above objectives, a tool structure for drilling holes at both ends of a car steering gear rack is designed, including a tool holder, characterized in that: a drill bit is horizontally embedded in the middle of the tool holder, the bottom of the drill bit abuts against the bottom of the tool holder and is connected to a stop bolt; two protrusions are respectively provided on both sides of the head of the tool holder, and cutting blades are respectively connected to the sides of the two protrusions; the side of the drill bit abuts against a locking bolt.

[0005] The stop bolt passes through the bottom of the tool holder and connects to the bottom of the drill bit.

[0006] One end of the locking bolt is located on the side of the tool holder, and the other end of the locking bolt passes through the side of the tool holder and abuts against the side of the drill bit.

[0007] The drill bit includes a drill bit rod and a drill bit head. The drill bit rod is a cylindrical structure with a flat surface on its side. The other end of the locking bolt abuts against the flat surface of the drill bit. The drill bit head is a helical chamfered step structure with blade clearance grooves at the second and third chamfered steps.

[0008] The blade has a rectangular modular structure and is connected to the head of the handle by a blade bolt.

[0009] The tool holder includes a tool holder shank and a tool holder head. The tool holder shank has a stepped cylindrical structure with a through hole for a locking bolt at the bottom. The tool holder head has a cylindrical structure with a through hole for a locking bolt on the lower side. The upper part of the tool holder head has a U-shaped columnar structure with a through hole for a drill bit in the middle. The two protruding ends of the tool holder head are connected to the cutting blades.

[0010] The protrusion at the head of the blade handle is a right-angled fan-shaped columnar structure, with two blades located on the horizontal planes of the two protrusions respectively, and the cutting edge of the blade protruding from the head of the protrusion.

[0011] The cutting edge of the blade is positioned towards the drill bit.

[0012] Compared with the prior art, this utility model provides a tool structure for drilling holes at both ends of a car steering gear rack. It improves the structure of the tool holder and drill bit, and can complete multiple chamfering, flattening and drilling processes in one go, thereby improving processing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the drill bit structure in this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the processed product of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figure 1 , Figure 2 As shown, a drill bit 3 is horizontally embedded in the middle of the handle 6. The bottom of the drill bit 3 abuts against the bottom of the handle 6 and is connected to the stop bolt 1. Two protrusions are provided on both sides of the head of the handle 6, and the sides of the two protrusions are respectively connected to the blades 4. The side of the drill bit 3 abuts against the locking bolt 2.

[0018] The stop bolt 1 passes through the bottom of the tool holder 6 and is connected to the bottom of the drill bit 3.

[0019] One end of the locking bolt 2 is located on the side of the tool holder 6, and the other end of the locking bolt 2 passes through the side of the tool holder 6 and abuts against the side of the drill bit 3.

[0020] The drill bit 3 includes a drill bit rod and a drill bit head. The drill bit rod is a cylindrical structure with a flat surface 7 on its side. The other end of the locking bolt 2 abuts against the flat surface 7 of the drill bit 3. The drill bit head is a spiral chamfered step structure with blade clearance grooves 8 at the second and third chamfered steps.

[0021] The blade 4 has a rectangular module structure and is connected to the head of the handle 6 via the blade bolt 5.

[0022] The handle 6 includes a handle shank and a handle head. The handle shank is a stepped cylindrical structure with a through hole for the stop bolt 1 at the bottom. The handle head is a cylindrical structure with a through hole for the locking bolt 2 at the lower side. The upper part of the handle head is a U-shaped columnar structure with a through hole for the drill bit 3 in the middle. The two protrusions at the ends of the handle head are connected to the blade 4.

[0023] The protrusion at the head of the handle is a right-angled fan-shaped columnar structure. The two blades 4 are located on the horizontal plane of the two protrusions respectively, and the cutting edge of the blades 4 protrudes from the head of the protrusion.

[0024] The cutting edge of the blade 4 is positioned towards the drill bit 3.

[0025] like Figure 1 As shown, the drill bit 3 of this utility model is fixed by a side fixing method. A top bolt 1 is provided at the bottom to fix the drill bit 3, and a locking bolt 2 is provided on the side to fix the drill bit 3. This can simplify the structure of the tool holder 6 and reduce the production cost of the tool holder 6.

[0026] The stop bolt 1 is located at the bottom of the drill bit 3 and holds the drill bit 3 in place. The locking bolt 2 is located on the side of the tool holder 6 and holds the side of the drill bit 3 after being tightened. The cutting tool 4 is fixed to the tool holder 6 by the cutting tool bolt 5.

[0027] like Figure 2 As shown, the shank side of the drill bit 3 has a flat surface 7, which facilitates the locking bolt 2 to lock the drill bit 3. The second and third chamfered steps of the drill bit 3 are designed with cutting tool clearance grooves 8.

[0028] Insert the drill bit 3 into the tool holder 6, tighten the locking bolt 2 against the plane 7 of the drill bit 3 and lock it, and press the stop bolt 1 against the bottom of the drill bit 3. The cutting blade 4 is installed on the tool holder 6 through the cutting blade clearance groove 8.

[0029] like Figure 3 As shown, blade 4 is responsible for machining. Figure 3 The outer chamfer at point d and the flat surface at point e are machined; drill bit 3 is responsible for machining. Figure 3 Drill a hole at point a, chamfer the first corner at point b, and chamfer the second corner at point c.

[0030] By adopting the structure of this utility model, five parts, including drilling, first chamfering, second chamfering, turning the flat surface, and outer chamfering, can be processed in one go, greatly improving processing efficiency.

Claims

1. A tool structure for drilling holes at both ends of a steering gear rack in an automobile, comprising a tool holder, characterized in that: A drill bit (3) is horizontally embedded in the middle of the handle (6). The bottom of the drill bit (3) abuts against the bottom of the handle (6) and is connected to the stop bolt (1). Two protrusions are provided on both sides of the head of the handle (6), and the sides of the two protrusions are connected to the blades (4). The side of the drill bit (3) abuts against the locking bolt (2).

2. The tool structure for drilling holes at both ends of a gear rack in an automotive steering system according to claim 1, characterized in that: The stop bolt (1) passes through the bottom of the tool holder (6) and is connected to the bottom of the drill bit (3).

3. The tool structure for drilling holes at both ends of a gear rack in an automotive steering system according to claim 1, characterized in that: One end of the locking bolt (2) is located on the side of the tool holder (6), and the other end of the locking bolt (2) passes through the side of the tool holder (6) and abuts against the side of the drill bit (3).

4. The tool structure for drilling holes at both ends of a gear rack in an automotive steering system according to claim 1, characterized in that: The drill bit (3) includes a drill bit rod and a drill bit head. The drill bit rod is a cylindrical structure with a flat surface (7) on the side of the drill bit rod. The other end of the locking bolt (2) abuts against the flat surface (7) of the drill bit (3). The drill bit head is a spiral chamfered step structure with blade clearance grooves (8) at the second and third chamfered steps.

5. The tool structure for drilling holes at both ends of a gear rack in an automotive steering system according to claim 1, characterized in that: The blade (4) is a rectangular module structure, and the blade (4) is connected to the head of the handle (6) by a blade bolt (5).

6. The tool structure for drilling holes at both ends of a gear rack in an automotive steering system according to claim 1, characterized in that: The tool handle (6) includes a tool handle shank and a tool handle head. The tool handle shank is a stepped cylindrical structure, and a through hole for a top bolt (1) is provided at the bottom of the tool handle shank. The tool handle head is a cylindrical structure, and a through hole for a locking bolt (2) is provided on the lower side of the tool handle head. The upper part of the tool handle head is a U-shaped columnar structure, and a through hole for a drill bit (3) is provided in the middle of the tool handle head. The two protrusions at the ends of the tool handle head are respectively connected to the blade (4).

7. The tool structure for drilling holes at both ends of a car steering gear rack according to claim 6, characterized in that: The protrusion at the head of the knife handle is a right-angled fan-shaped columnar structure. The two blades (4) are located on the horizontal plane of the two protrusions respectively, and the cutting edge of the blade (4) protrudes from the head of the protrusion.

8. The tool structure for drilling holes at both ends of a gear rack in an automotive steering system according to claim 7, characterized in that: The cutting edge of the blade (4) is positioned towards the drill bit (3).

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