CN113492372A

CN113492372A - Spanner framework and numerical control machining method thereof

Info

Publication number: CN113492372A
Application number: CN202110732412.4A
Authority: CN
Inventors: 陈志澜; 黄书翰; 俞海洋
Original assignee: Shanghai Intelligent Manufacturing System Innovation Center Co ltd; Shanghai Jian Qiao University
Current assignee: Shanghai Intelligent Manufacturing System Innovation Center Co ltd; Shanghai Jian Qiao University
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-12

Abstract

The invention relates to a wrench framework and a numerical control processing method thereof, wherein the wrench framework comprises a mounting ring and an operating handle framework connected with the mounting ring; wherein the mounting ring is internally embedded with a wrench block, a wrench hole is axially penetrated in the wrench block, the mounting ring is connected with the wrench block through a bolt, and a handle sleeve is sleeved on the operating handle framework. Compared with the prior art, the wrench framework has the advantages of simple structure, convenience in use and easiness in production, and the wrench blocks with proper specification types can be selected according to actual conditions, so that the wrench framework has a wider application range; meanwhile, for the situation that the installation bolts arranged on a large-area steel plate or a wall surface are inconvenient to hold the wrench handle due to the interference of the steel plate or the wall surface, the auxiliary handle can be vertically connected through the connecting hole in the middle of the operation handle framework, so that the operation wrench can be conveniently rotated, and the use convenience of the wrench is obviously improved.

Description

Spanner framework and numerical control machining method thereof

Technical Field

The invention belongs to the technical field of hand tools, and relates to a wrench framework and a numerical control machining method thereof.

Background

The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other screw threads to tightly hold open or trepanning fasteners of the bolts or nuts by utilizing the lever principle. Chinese patent CN201520832396.6 discloses a special socket wrench for long and narrow space and special socket wrench for disassembling and assembling detectors of a bag arrangement unit, which comprises an end head and a handle, wherein the outer diameter of the end head and the outer diameter of a nut socket are the same as those of the socket wrench in metric specification, but the depth of the nut socket is greater than that of the nut socket of the socket wrench in the same metric specification, the length of the handle is longer than the long and narrow space of the nut installation position, one end of the handle is connected with the end head, and the other end of the handle is provided with a through hole for a cross rod to pass through, and the two ends of the cross rod are mechanically or manually stressed. The utility model discloses can be used to dismouting cigarette workshop and concentrate detector on the tobacco rod passageway of YPB3, YPB4 type row package unit of joint sealing, solve the problem that narrow space adopted ordinary spanner operation difficulty, it is quick laborsaving, greatly reduced the down time of arranging the chartered plane, promoted equipment efficiency, reduced maintenance operation staff's work load.

However, the end of the wrench is generally provided with a socket with a fixed specification and size, and different wrenches are required to be replaced and installed for different objects, which brings inconvenience to the personnel who go out for maintenance in terms of carrying, storage and the like, and increases the cost of the device.

Disclosure of Invention

The invention aims to provide a wrench framework, which is used for solving the problem that the existing wrench framework is poor in adaptability to different types of assembling bolts.

The purpose of the invention can be realized by the following technical scheme:

a wrench framework comprises a mounting ring and an operating handle framework connected with the mounting ring;

the installation ring is internally embedded with a wrench block, a wrench hole is axially formed in the wrench block in a penetrating mode, the installation ring is connected with the wrench block through a bolt, and a handle sleeve is sleeved on the operation handle framework.

Furthermore, the side wall of the mounting ring is provided with a mounting through hole in a penetrating manner, the wrench block is correspondingly provided with a mounting groove, and the wrench block and the mounting ring are connected through a mounting pin penetrating through the mounting through hole and the mounting groove in a bolt-inserting manner.

Furthermore, the installation through holes are provided with two and are respectively arranged on the opposite side walls of the installation ring.

Further, the wrench holes include a hexagonal wrench hole, a square wrench hole, or a triangular wrench hole.

Furthermore, the tail end of the operation handle framework protrudes outwards to form a tail end limiting boss so as to install the limiting handle sleeve.

Furthermore, a transition fillet is arranged at the corner of the tail end limiting boss.

Furthermore, a connecting hole for inserting and installing the auxiliary handle is formed in the operating handle framework, the axis of the connecting hole is parallel to the axis of the installing ring, and the back side of the operating handle framework and the back side of the installing ring form a flat back surface.

Furthermore, the operation handle framework is provided with a reinforced boss, and the connecting hole is formed in the reinforced boss.

Furthermore, reinforcing convex ribs are arranged between the two sides of the reinforcing lug boss and the tail end of the operation handle framework and between the reinforcing lug boss and the mounting ring.

Furthermore, the two ends of the reinforcing convex rib are smoothly connected with the reinforcing lug boss.

A preparation method of a spanner framework comprises the following steps:

s1: clamping and fixing the head end of the blank through a chuck, processing the back side of the blank by adopting a milling cutter, and sequentially processing the smooth back side of the wrench framework, the outer contour of the wrench framework and a tail end limiting boss;

s2: clamping and fixing the tail end of the blank through a chuck, machining the front side of the blank by adopting a milling cutter, and sequentially milling to form a reinforced boss and a reinforced convex rib;

s3: drilling a central hole at the top end of the reinforcing rib by using a chamfering tool, and processing to form a connecting hole by using a milling cutter with the central hole as a reference;

s4: processing the head end of the blank by using a milling cutter to obtain a wrench block assembling hole, then performing finish machining on the wrench block assembling hole, and performing plane profile milling by using a C6 chamfering cutter to form a mounting ring;

s5: and drilling a central hole on the side wall of the mounting ring by using a C6 chamfering tool, and drilling to form a mounting through hole by using the central hole as a reference, thus obtaining the wrench framework.

Compared with the prior art, the invention has the following characteristics:

1) the application range is wide: the wrench framework can select the wrench blocks with proper specification types according to the actual requirements, so that the wrench framework has a wider application range; meanwhile, for the situation that bolts arranged on a large-area steel plate or a wall surface are inconvenient to hold a wrench handle by hands due to interference of the steel plate or the wall surface, the wrench handle can be vertically connected with an auxiliary handle through a connecting hole in the middle of the operation handle framework, so that the operation wrench can be conveniently rotated;

2) simple structure, convenient to use: the wrench block and the mounting ring are connected through the bolt, so that the wrench can be put into use, the wrench block is more convenient to replace, and the use convenience is obviously improved;

3) easy production: the invention also provides a machining and manufacturing method of the wrench framework based on the numerical control machining technology, and the method has the advantages of high precision, integrated machining steps, uniform cutting load, small cutter abrasion and the like.

Drawings

FIG. 1 is a schematic perspective view of a skeleton of a wrench according to an embodiment;

FIG. 2 is a schematic front view of a wrench skeleton according to an embodiment;

FIG. 3 is a schematic bottom view of a wrench skeleton according to an embodiment;

FIGS. 4-10 are graphs of the path of the tool paths of the steps in the numerical control machining method for the wrench skeleton according to the embodiment;

FIG. 11 is a schematic view of a wrench block;

the notation in the figure is:

1-mounting ring, 2-operating handle skeleton, 3-wrench block, 4-wrench hole, 5-mounting through hole, 6-mounting groove, 7-end limit boss, 8-connecting hole, 9-strengthening boss and 10-strengthening rib.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example (b):

a wrench skeleton as shown in fig. 1-3, comprising a mounting ring 1 and an operating handle skeleton 2 connected with the mounting ring 1; wherein the ring 1 is embedded with a wrench block 3 as shown in fig. 11, a hexagonal wrench hole 4 is axially penetrated through the wrench block 3, a mounting through hole 5 is penetrated through the opposite side wall of the ring 1, a mounting groove 6 is correspondingly arranged on the wrench block 3, and the wrench block 3 and the ring 1 are connected by a bolt through a mounting pin penetrating through the mounting through hole 5 and the mounting groove 6. The cover is equipped with handle sleeve on the operating handle skeleton 2, and the terminal outside protrusion of operating handle skeleton 2 forms terminal spacing boss 7 to the spacing handle sleeve of installation, 7 edges of terminal spacing boss are equipped with the transition fillet, in order to avoid damaging handle sleeve.

In addition, be equipped with on the operating handle skeleton 2 and strengthen boss 9, should strengthen boss 9 middle part and offer the connecting hole 8 that is used for the installation auxiliary handle of pegging graft, strengthen boss 9 both sides and the 2 tail ends of operating handle skeleton, all be equipped with between the collar 1 and strengthen fin 10, the axis of connecting hole 8 parallels with collar 1 axis, the back is leveled in 2 backs of operating handle skeleton and the 1 dorsal part formation of collar to the staff loads and unloads the hexagon bolt on to the great plane steel sheet of area or the wall body.

A preparation method of a spanner framework comprises the following steps:

s1: solid modeling of wrench skeleton

The method comprises the following steps of (1) making a shaft sleeve structure size according to design requirements, and drawing a structure outline, a shape and a size of a wrench framework by adopting UG10.0 software to obtain a three-dimensional part model of the wrench framework;

s2: creation of two-dimensional engineering drawings

Generating a two-dimensional engineering drawing, marking the process dimensions such as dimensional tolerance, form and position tolerance, roughness and the like and the technical requirements, and forming a part process drawing with clear requirements;

s3: design of tool path

Creating a cuboid blank in a processing module of UG10.0 software, and designing a feed path track by taking the center of a model as a processing origin;

s3-1: as shown in fig. 4, the surface milling cutter path, open surface: clamping and fixing the B end of the blank through a chuck, processing the back side of the blank by adopting a milling cutter, and sequentially processing the smooth back side of the wrench framework, the outer contour of the wrench framework and a tail end limiting boss 7; the total thickness is 12.19mm, and the single-side allowance is 0.1 mm;

s3-2: as shown in fig. 5, the end a of the blank is clamped and fixed by a chuck, the front surface of the blank is subjected to milling rough machining by a milling cutter, the flow of a single side is 0.1mm, and then the cutting path is repeated for fine machining to sequentially form a reinforcing boss 9 and a reinforcing rib 10;

s3-3: as shown in fig. 6-7, a central hole with the diameter of 6.38mm and the depth of 1.5mm is drilled at the top end of the reinforcing rib 10 by a chamfer cutter with the diameter of 6mm, a pre-drilled hole is drilled by a drill bit with the diameter of 5mm, a milling cutter with the diameter of 4mm is used, the pre-drilled hole is taken as a reference, a connecting hole 8 is formed by a spiral milling hole, and the single-side allowance is 0.1 mm;

s3-4: as shown in fig. 8-9, a milling cutter with a diameter of 10mm is used for performing contour machining and roughing on the end B of the blank to obtain a wrench block assembling hole with a diameter of 25.38mm, a finishing cutter with a diameter of 10mm is used for finishing the inner wall of the wrench block assembling hole, and then a finishing cutter with a diameter of 4mm is used for finishing the inner wall of the wrench block assembling hole and the inner wall of the connecting hole 8;

s3-5: as shown in fig. 10, the inner wall of the wrench block assembling hole and the inner wall of the connecting hole 8 are subjected to plane profile milling by using a C6 chamfering tool, the lower depth is 1.5mm, burrs are removed, and the chamfer c0.5mm is used for removing the burrs of parts, so that the mounting ring 1 is formed;

s3-6: and drilling a central hole with the diameter of phi 2mm on the side wall of the mounting ring 1 by using a C6 chamfering tool, and drilling to form a through hole with the diameter of phi 2.5mm by using the central hole as a reference to form a mounting through hole 5, namely finally obtaining the wrench framework.

S4: generation of NC program

Generating an NC program for five-axis milling machining by utilizing the feed path track through a post processor in UG10.0 software;

s5: simulation processing of Vericut software

Carrying out numerical control simulation machining simulation by using Vericut, and building a virtual five-axis numerical control machine tool in Vericut software; placing the blank model of the shaft sleeve structure in a virtual five-axis numerical control machine tool, and importing and operating an NC program to perform simulation machining on the blank model of the shaft sleeve structure; and under the condition that no over-cut or collision exists, optimizing the NC program by using an optimization module in Vericut software so as to improve the machining efficiency.

And in actual machining, generating a G code by using the optimized cutter track, and importing the G code into a five-axis numerical control machine tool to perform numerical control machining on the shaft sleeve structure.

The embodiments described above are described to facilitate an understanding and appreciation of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make modifications and alterations without departing from the scope of the present invention.

Claims

1. A wrench framework is characterized in that the wrench framework comprises a mounting ring (1) and an operation handle framework (2) connected with the mounting ring (1);

the installation ring is characterized in that a wrench block (3) is embedded in the installation ring (1), a wrench hole (4) is formed in the wrench block (3) in a penetrating mode along the axial direction, the installation ring (1) is connected with the wrench block (3) through a bolt, and a handle sleeve is sleeved on the operation handle framework (2).

2. The wrench framework as claimed in claim 1, wherein a mounting through hole (5) is formed through a side wall of the mounting ring (1), a mounting groove (6) is correspondingly formed on the wrench block (3), and the wrench block (3) and the mounting ring (1) are connected by a plug pin passing through the mounting through hole (5) and the mounting groove (6).

3. A wrench skeleton according to claim 1, in which the mounting through-holes (5) are provided in two and open at opposite side walls of the mounting ring (1).

4. A wrench skeleton according to claim 1, in which the wrench holes (4) comprise hexagonal wrench holes, square wrench holes or triangular wrench holes.

5. A wrench frame as claimed in claim 1, wherein the handle bar frame (2) has an end projecting outwardly to form an end limit projection (7) for mounting a limit handle sleeve.

6. A wrench framework according to claim 1, characterized in that the corners of the end limit bosses (7) are provided with transition fillets.

7. The wrench framework according to claim 1, wherein the operating handle framework (2) is provided with a connecting hole (8) for inserting and installing an auxiliary handle, the axis of the connecting hole (8) is parallel to the axis of the installation ring (1), and the back side of the operating handle framework (2) and the back side of the installation ring (1) form a flat back surface.

8. A wrench frame as claimed in claim 7, characterized in that the operating handle frame (2) is provided with a reinforcing boss (9), and the connecting hole (8) is provided on the reinforcing boss (9).

9. A wrench frame as claimed in claim 8, wherein reinforcing ribs (10) are provided between the two sides of the reinforcing boss (9) and the tail end of the operating handle frame (2) and the mounting ring (1).

10. A method of manufacturing a skeleton for a wrench as claimed in any one of claims 1 to 9, comprising the steps of:

s1: clamping and fixing the head end of the blank through a chuck, processing the back side of the blank by adopting a milling cutter, and sequentially processing the smooth back side of the wrench framework, the outer contour of the wrench framework and a tail end limiting boss (7);

s2: clamping and fixing the tail end of the blank through a chuck, machining the front face of the blank by adopting a milling cutter, and sequentially milling to form a reinforced boss (9) and a reinforced convex rib (10);

s3: drilling a central hole at the top end of the reinforcing convex rib (10) by using a chamfering tool, and processing to form a connecting hole (8) by using a milling cutter with the central hole as a reference;

s4: processing the head end of the blank by using a milling cutter to obtain a wrench block assembling hole, then performing finish machining on the wrench block assembling hole, and performing plane profile milling by using a C6 chamfering cutter to form a mounting ring (1);

s5: and (3) drilling a central hole on the side wall of the mounting ring (1) by using a C6 chamfering tool, and drilling to form a mounting through hole (5) by taking the central hole as a reference, thus obtaining the wrench framework.