CN217393939U - Machining tool for open end wrench - Google Patents

Abstract

The utility model provides a processing cutter for open-ended spanner, this utility model's processing cutter include a sword head fixing base, a sword head unit and a mounting. The tool bit unit has a finish turning tool bit, a rough cutting tool bit and a tool bit that punches a hole, and the three is arranged from big to small according to the size towards the direction of keeping away from the tool bit fixing base, and the mounting passes tool bit, rough cutting tool bit and the finish turning tool bit that punches a hole according to the preface from bottom to top to locate the tool bit fixing base with detachable mode. Therefore, the utility model discloses a processing cutter can once accomplish open-ended processing to the open-ended spanner to simplify preparation flow and reduce cost.

Description

Machining tool for open end wrench

Technical Field

The present invention relates to open end wrenches, and more particularly to a tool for opening end wrenches.

Background

The open end wrench is a very popular hand tool, and when in use, the open end of one end head is mainly used for clamping a nut or a bolt head, and then force is applied to the handle, so that a user can lock or release the nut or the bolt head in a labor-saving way.

In the conventional method for manufacturing the open end wrench, a connection portion 94 (as shown in fig. 1) is retained at the opening 92 of the forged wrench blank 90, and then the connection portion 94 is punched by a punch press and then is machined by a broaching machine, so that the opening 92 can be machined to a desired size by broaching with a broaching tool. However, the manufacturing method requires a plurality of different special processing machines, which is complicated and relatively high in cost, and thus there is still room for improvement.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a processing tool for open-ended wrenches, which can complete the open-ended processing once, so as to simplify the preparation process and reduce the cost.

In order to achieve the above-mentioned objective, the present invention provides a machining tool, which comprises a tool bit fixing base, a tool bit unit, and a fixing member. The tool bit unit is provided with a fine cutting tool bit, a rough cutting tool bit and a punching tool bit, wherein the fine cutting tool bit, the rough cutting tool bit and the punching tool bit are arranged from large to small in the direction away from the tool bit fixing seat according to the size; the fixing piece sequentially penetrates through the punching tool bit, the rough cutting tool bit and the fine cutting tool bit from bottom to top and is detachably arranged on the tool bit fixing seat.

Therefore, the utility model discloses a processing cutter utilizes this tool bit that punches a hole to break earlier and remains a connecting portion of opening periphery, utilizes this rough cutting tool bit to carry out rough cutting to this open-ended periphery after that, then utilizes this finish cutting tool bit to carry out the finish cutting to this open-ended periphery. In other words, the utility model discloses a processing cutter can once accomplish this open-ended processing to simplify preparation flow and reduce cost, when pulling down this mounting in addition, can maintain or change this finish turning tool bit, this rough cutting tool bit and this tool bit that punches a hole, and then increase the convenience in the use.

Preferably, the tool bit fixing seat and the fine cutting tool bit are separated from each other by a cushion block penetrated by the fixing part, so that a tool retracting gap is formed between the tool bit fixing seat and the fine cutting tool bit. After the opening is machined, the opening is withdrawn through the tool withdrawal notch.

Preferably, the fine cutting head and the rough cutting head and the punching head are separated by a cushion block penetrated by the fixing member, so that a chip discharge gap is formed between the fine cutting head and the rough cutting head and between the rough cutting head and the punching head respectively. The chip removal notches discharge chips generated in the machining process.

Preferably, the cutter unit further has a supporting member parallel to the fixing member, and the supporting member sequentially passes through the punching cutter head, the rough cutting cutter head and the finish cutting cutter head from bottom to top and is tightly inserted into an insertion hole of the cutter head fixing seat. The structural strength is improved by the support.

Preferably, the tool bit fixing seat has a screw hole, the fixing member has a threaded end, and the fixing member is detachably assembled to the tool bit fixing seat by the threaded end being disposed in the screw hole of the tool bit fixing seat.

The detailed construction, features, assembly or use of the tool for open-end wrenches according to the present invention will be described in the following detailed description of the preferred embodiments. However, those skilled in the art should understand that the detailed description and specific examples are given for the purpose of illustration only, and not for the purpose of limiting the scope of the invention.

Drawings

Fig. 1 is a partial perspective view of a wrench blank.

Fig. 2 is a perspective view of the machining tool of the present invention.

Fig. 3 is an exploded perspective view of the machining tool of the present invention.

Fig. 4 is a plan view of the machining tool of the present invention.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 4.

Fig. 6 is a flowchart of a machining method of the machining tool of the present invention.

[ description of reference ]

10-machining tool

20-tool bit fixing seat

22-screw hole

24-jack

30-cutter head unit

32-chip removal notch

34-notch of tool withdrawal

40-finishing bit

42-first middle hole

44-first side hole

50-roughing tool bit

52-second middle hole

54-second side hole

56-cutting teeth

60-punching tool bit

62-third middle hole

64-third side hole

70-spacer block

72-fourth middle hole

74-fourth side hole

80-fastener

82-threaded end

84-support

90-spanner rough blank

92-opening

94-connection part

S1-S5-step

Detailed Description

Applicants first describe herein, throughout this specification, including the examples and claims that follow, directional terms are used with respect to the drawings. Next, in the embodiments and drawings to be described below, the same reference numerals are used to designate the same or similar components or structural features thereof.

Referring to fig. 2 and 3, the machining tool 10 of the present invention includes a tool bit fixing base 20, a tool bit unit 30, and a fixing member 80.

The bottom surface of the bit holder 20 has a screw hole 22 and two insertion holes 24, and the screw hole 22 is located between these insertion holes 24 (as shown in fig. 5).

As shown in fig. 2 to 4, the cutter head unit 30 has a finishing cutter head 40, two rough cutter heads 50 and a punching cutter head 60, the finishing cutter head 40, the rough cutter heads 50 and the punching cutter head 60 are arranged in a size from large to small in a direction away from the cutter head holder 20, wherein a cutting tooth portion 56 is provided on an outer peripheral surface of each rough cutter head 50. The cutter head unit 30 further has four spacers 70, which spacers 70 are respectively provided between the cutter head holder 20 and the finishing cutter head 40, between the finishing cutter head 40 and the roughing cutter head 50, between the roughing cutter heads 50, and between the roughing cutter head 50 and the punching cutter head 60, so that a chip removal gap 34 is formed between the cutter head holder 20 and the finishing cutter head 40, on the one hand, and a chip removal gap 32 is formed between the finishing cutter head 40 and the roughing cutter head 50, between the roughing cutter heads 50, and between the roughing cutter head 50 and the punching cutter head 60, on the other hand. In addition, finishing bit 40 has a first center hole 42 and second first side holes 44, each roughing bit 50 has a second center hole 52 and second side holes 54, piercing bit 60 has a third center hole 62 and second third side holes 64, and each spacer 70 has a fourth center hole 72 and fourth side holes 74.

It should be noted that the fine turning tool tip 40, the rough turning tool tip 50 and the punching tool tip 60 may be variously changed in profile according to actual needs, and are not limited herein, and the number of the rough turning tool tips 50 is not limited to two, and may be reduced to one or more than two according to actual needs.

The fixing member 80 sequentially passes through the third middle hole 62 of the punching tool bit 60, the fourth middle hole 72 of the spacer 70, the second middle hole 52 of the roughing tool bit 50, the fourth middle hole 72 of the spacer 70, the first middle hole 42 of the finishing tool bit 40 and the fourth middle hole 72 of the spacer 70 from bottom to top, and is screwed in the screw hole 22 of the tool bit fixing base 20 by a threaded end 82 thereof, so as to fix the punching tool bit 60, the roughing tool bits 50, the finishing tool bit 40 and the spacers 70 together. In addition, the present invention further provides two supporting members 84 (actually, only one supporting member is needed), the supporting members 84 pass through the third side holes 64 of the punching head 60, the fourth side holes 74 of the spacer block 70, the second side holes 54 of the rough-cutting head 50, the fourth side holes 74 of the spacer block 70, the first side holes 44 of the finish-cutting head 40, and the fourth side holes 74 of the spacer block 70 from bottom to top, and are tightly inserted into the insertion holes 24 of the head fixing base 20 by their ends, so that the strength of the whole structure is increased by the supporting members 84.

The above is the structural feature of the machining tool 10 of the present invention, and the following will further explain the machining method of the machining tool 10 of the present invention, as shown in fig. 6, the machining method of the machining tool 10 of the present invention includes the following steps:

a) in step S1 shown in fig. 6, a wrench blank 90 is provided, in which one end of the wrench blank 90 has an opening 92 and a connecting portion 94 disposed around the opening 92. The wrench blank 90 is usually manufactured by forging, and the manufacturing method of the wrench blank 90 is not essential in this application and is not described herein.

b) In step S2 shown in fig. 6, the tool bit holder 20 is mounted on a power source (e.g., a punch press, not shown), and the machining tool 10 is moved downward by the power source to punch the connecting portion 94 with the punching tool bit 60.

c) In step S3 shown in fig. 6, the machining tool 10 is moved downward by the driving of the power source, and the peripheral edge of the opening 92 is roughly machined by the cutting tooth portions 56 of the rough cutting tips 50. Chips generated during the roughing operation are discharged from the chip discharge notches 32.

d) In step S4 shown in fig. 6, the machining tool 10 is driven by the power source to move down and finish the periphery of the opening 92 with the finishing bit 40, and the opening 92 is machined to a desired size.

e) In step S5 shown in fig. 6, when the machining tool 10 is driven by the power source to move down to the tool retracting notch 34 corresponding to the opening 92, the machining tool 10 can be withdrawn from the opening 92, and thus the machining of the opening 92 is completed.

Therefore, the processing tool 10 of the present invention can complete the processing of the opening 92 at a time without operating a plurality of different special processing machines, so as to simplify the preparation process and reduce the cost. In addition, when the tool bit is damaged, the damaged tool bit can be repaired or replaced by removing the fixing member 80, so that convenience in use can be improved.

Claims (5)

1. A tool for open end wrenches, comprising:

a cutter head fixing seat;

the cutter head unit is provided with a fine cutting cutter head, a rough cutting cutter head and a punching cutter head, and the fine cutting cutter head, the rough cutting cutter head and the punching cutter head are arranged from large to small in the direction away from the cutter head fixing seat according to the size; and

a fixing piece, which passes through the punching tool bit, the rough cutting tool bit and the fine cutting tool bit from bottom to top in sequence and is detachably arranged on the tool bit fixing seat.

2. The open-end wrench machining tool according to claim 1, wherein the tool unit further has a support member parallel to the fixing member, the support member sequentially passing through the punching head, the roughing head and the finishing head from bottom to top and being inserted with its distal end into a socket of the head holder with a tight fit.

3. The opening wrench machining tool according to claim 2, wherein the tool bit holder and the finishing tool bit are separated by a spacer such that a tool retracting gap is formed between the tool bit holder and the finishing tool bit; the fixing member and the supporting member both pass through the cushion block.

4. The opening wrench machining tool according to claim 2 or 3, wherein the fine cutting head and the rough cutting head and the punching head are separated by a spacer, respectively, so that a chip-removing gap is formed between the fine cutting head and the rough cutting head and between the rough cutting head and the punching head, respectively; the fixing piece and the supporting piece penetrate through the cushion blocks.

5. The open-end wrench machining tool according to claim 1, wherein the bit holder has a threaded hole, and the fastener has a threaded end, the fastener being disposed in the threaded hole of the bit holder with the threaded end.

Images