CN110497340B

CN110497340B - Machining method and clamp for multi-block assembly revolving body mold

Info

Publication number: CN110497340B
Application number: CN201910797780.XA
Authority: CN
Inventors: 薛祥强; 邓兴强
Original assignee: Sichuan Cosmos Precision Mold & Die Co ltd
Current assignee: Sichuan Kesi precision mould Co.,Ltd.
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2021-09-14
Anticipated expiration: 2039-08-27
Also published as: CN110497340A

Abstract

The invention discloses a processing method of a multi-block assembled revolving body die, belonging to the technical field of revolving body die processing and comprising the following steps: a. respectively processing the interiors of a plurality of partitioned workpieces of the same rotary body die by using a numerical control processing machine tool to form non-working surfaces matched with the rest partitioned workpieces; b. assembling a plurality of blocked workpieces with non-working surfaces according to a predetermined matching relation and fixing the blocked workpieces by using a clamp; c. machining the outer side of the assembly body according to the preset structure of the working surface of the rotary body die by using a numerical control machining tool; the invention also discloses a fixture for processing the multi-block assembled rotary body mould, which comprises a first fixture and a second fixture detachably connected with the first fixture, wherein the first fixture is provided with an external contour matched with the internal contour of the assembly body.

Description

Machining method and clamp for multi-block assembly revolving body mold

Technical Field

The invention relates to the technical field of revolving body mold processing, in particular to a processing method and a clamp of a multi-block revolving body mold.

Background

In the production process of a daily mold, when a rotary body comprises a plurality of workpieces, the plurality of workpieces are assembled together, the concentricity cannot be guaranteed, and the workpieces cannot be deformed in the precision plastic mold machining process. The disadvantages are that: the quality of an assembly body is not easy to guarantee, the concentricity and the roundness of the whole assembly workpiece and the appearance surface roughness of the whole assembly workpiece can not be guaranteed, after each workpiece is assembled, the surface of a product at the joint of the workpiece can have a fault, and the sharp corner is easy to damage when the workpiece is processed independently.

Disclosure of Invention

The invention aims to provide a processing method and a clamp for a multi-block revolving body mould.

The technical scheme for solving the technical problems is as follows:

a processing method of a multi-block assembly revolving body mold comprises the following steps:

a. respectively processing the interiors of a plurality of block workpieces for assembling the same rotary body die by adopting a numerical control processing machine tool, and forming a non-working surface matched with the rest block workpieces on each block workpiece; the multiple blocked workpieces are obtained by dividing along the axial direction of the rotary body die, and the matching relation among the multiple blocked workpieces is determined;

b. assembling a plurality of partitioned workpieces with non-working surfaces according to a predetermined matching relation and fixing the partitioned workpieces by using a clamp to obtain an assembly body.

c. And (3) processing the outer side of the assembly body according to the preset structure of the working surface of the revolving body die by using a numerical control processing machine tool to obtain the revolving body die.

The method comprises the following steps that each block workpiece is divided along the circumferential direction of a rotary body die, namely the length of each block workpiece is equal to that of a rotary body die in the axial direction, in the step a, the inside of each block workpiece is independently processed to obtain the non-working surface structure of each block workpiece, the non-working surface refers to the assembly surface between the block workpieces and the inner surface of each block workpiece, preferably, a process screw hole can be reserved at the bottom end of each workpiece according to needs, so that the workpieces can be conveniently and stably fixed on a clamp in subsequent processing, errors in subsequent processing are avoided, and after the whole structure is processed, the process screw hole can be selectively removed or reserved according to the necessary structure of the workpieces.

In the step b, as the assembling surface and the inner surface of each block workpiece are already machined, each block workpiece is assembled on the clamp according to the assembling relation through the machined assembling surface, the inner surface of each block workpiece is abutted against the outer surface of the clamp, and each workpiece is further fixed with the clamp through the technical screw hole.

In the step c, the workpieces are assembled into an assembly body and then the whole working surface is processed, the structure at the matching transition position of the two sub-pieces of workpieces can be processed simultaneously, and the working parameters of the working surfaces of the workpieces of the assembly body can be ensured to be consistent, so that the processing error is reduced, and the processing quality is ensured.

Further, in a preferred embodiment of the present invention, in step c, the step of fine machining the structure of the working surface of the assembly body by using an electric discharge machine.

A fixture for machining a multi-segment assembled rotary body mold includes a first fixture and a second fixture detachably connected to the first fixture, and the first fixture has an outer profile that matches an inner profile of a transition body.

And c, processing the inner surface of each blocked workpiece in the step a, wherein the inner surface is matched with the outer surface of the first clamp, so that the first clamp has a good supporting effect on each blocked workpiece, and the subsequent processing of the outer surface of each blocked workpiece is facilitated. Preferably, the second clamp is provided with screw holes matched with the process screw holes in the block workpiece. The clamp is a customized clamp, can be customized according to the inner surface profile of the workpiece, and can meet the requirements as long as the workpiece is well supported and the subsequent processing process is guaranteed to be smoothly carried out.

Further, in a preferred embodiment of the present invention, the first clamp includes a clamping section and a supporting section fixedly connected to the clamping section, an outer contour of the clamping section matches an inner contour of the assembly body, and the supporting section is detachably connected to the second clamp.

The clamping section is matched with the internal structure of the assembly body, each block workpiece can be assembled firstly and then fixed on the clamping section, and can also be fixed on the clamping section one by one independently to finally obtain a transfer body, the second clamp supports the first clamp, the first clamp is fixed on the second clamp, and each block workpiece is fixed on the second clamp through a process screw hole.

Further, in the preferred embodiment of the present invention, the second fixture is provided with a mounting groove matched with the support section.

The supporting section is fixed on the second clamp through the mounting groove on the second clamp.

The invention has the following beneficial effects:

according to the processing method, all the block workpieces of the assembled revolving body die are assembled into a whole through the fixture and then the working outer surfaces of the block workpieces are simultaneously processed, compared with the processing mode that all the workpieces are assembled after being processed independently, the processing method processes the revolving body assembly as a whole, the concentricity and the roundness of all the workpieces of the assembly can be effectively guaranteed, the deformation rate of the workpieces is reduced, the generation of fracture difference is reduced, the damage of sharp corners is avoided, and the purpose of guaranteeing the processing quality is achieved.

Drawings

FIG. 1 is a schematic view of an assembly structure of an assembly body and a clamp according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a rotor mold according to an embodiment of the present invention;

FIG. 3 is a top view of a rotor mold of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a first workpiece block according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second workpiece block according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a first clamp according to an embodiment of the present invention;

FIG. 7 is a top view of a first fixture of an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second fixture according to an embodiment of the present invention.

Fig. 9 is a top view of a second fixture of an embodiment of the present invention.

Wherein: 1-a rotor mold; 2-blocking the first workpiece; 3-partitioning a second workpiece; 4-a first clamp; 41-a clamping section; 42-a support section; 5-a second clamp; 51-a mounting groove; 52-mounting holes; 53-mounting a circular groove; 6-internal surface; 7-end face; 8-assembling surface; 9-craft screw hole

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Examples

Referring to fig. 1 and 2, in the present embodiment, the rotating body mold 1 is divided into six partitioned workpieces along the circumferential direction, including three partitioned workpieces one 2 and three partitioned workpieces two 3, the partitioned workpieces one 2 and the partitioned workpieces two 3 are arranged at intervals, and assembled into the rotating body mold 1, the rotating body mold 1 has a simple internal structure, and the outer surface is a working surface.

Fig. 8 is a schematic structural view of a second jig with its bottom surface facing upward, and referring to fig. 6 and 8, a jig for machining a multi-segment assembly rotary body mold includes a first jig 4 and a second jig 5 detachably coupled to the first jig 4; referring to fig. 6, the first clamp 4 comprises a clamping section 41 and a support section 42 fixedly connected to the clamping section 41, and referring to fig. 3 and 7, the outer contour of the clamping section 41 matches the inner contour of the rotary body mould 1.

Referring to fig. 8 and 9, the second fixture 5 is provided at the middle thereof with a mounting groove 51 and a mounting hole 52, and the support section 42 of the first fixture 4 is fitted into the mounting groove 51 to vertically fix the first fixture 4 to the second fixture 5; the middle part of the second clamp 5 is also provided with a mounting circular groove 53 for fixing the second clamp on the processing table.

a. adopting a numerical control machining center to respectively machine the interiors of the first block workpiece 2 and the second block workpiece 3, referring to fig. 4 and 5, in the step, the machining structure of the first block workpiece 2 and the second block workpiece 3 comprises the following steps: the inner surface 6, the end surface 7 and the assembly surface 8 of each block workpiece, and the bottom ends of the first block workpiece 2 and the second block workpiece 3 are reserved with process screw holes 9;

b. the supporting section of the first clamp is vertically fixed on a second clamp 5 through a mounting groove on the second clamp, then three blocking workpieces I2 and three blocking workpieces II 3 with non-working surface structures processed are fixed on a clamping section 41 of the first clamp 4 according to an assembling relation to obtain an assembly body, the inner surfaces of the blocking workpieces I2 and the blocking workpieces II 3 tightly abut against the outer surface of the clamping section 41, the blocking workpieces I2 and the blocking workpieces II 3 are fixed on the second clamp 5 through process screw holes 9, and mounting holes 52 matched with the process screw holes 9 in the blocking workpieces I2 and the blocking workpieces II 3 are formed in the second clamp 5.

c. The assembly body is taken as a whole, the overall outline of the outside of the assembly body is roughly machined by using a machining tool to machine the surface of a revolving body, and then the working surface of the assembly body is finely machined by using an electric spark machining tool.

And detaching the machined first block workpiece 2 and the second block workpiece 3 from the first clamp 4 and assembling to obtain the rotary body die 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The processing method of the multi-block assembly revolving body mold is characterized by comprising the following steps of:

a. respectively processing the interiors of a plurality of partitioned workpieces for assembling the same rotary body die by adopting a numerical control processing machine tool, and forming a non-working surface for being matched with the rest partitioned workpieces on each partitioned workpiece; the plurality of blocked workpieces are obtained by dividing along the circumferential direction of the rotary body die, and the matching relation among the plurality of blocked workpieces is determined; the rotating body die is divided into six partitioned workpieces along the circumferential direction, and the six partitioned workpieces comprise a first partitioned workpiece and a second partitioned workpiece; the structure for processing the first block workpiece and the second block workpiece comprises: the inner surface, the end surface and the assembly surface of each block workpiece, and process screw holes are reserved at the bottom ends of the first block workpiece and the second block workpiece;

b. assembling a plurality of blocked workpieces with non-working surfaces according to a predetermined matching relation and fixing the blocked workpieces by using a clamp to obtain an assembly body; the method comprises the following steps that firstly, a supporting section of a first clamp is vertically fixed on a second clamp through a mounting groove on the second clamp, then, three first block workpieces and three second block workpieces which are processed to be of non-working surface structures are fixed on a clamping section of the first clamp according to an assembling relation to obtain an assembly body, the inner surfaces of the first block workpieces and the second block workpieces tightly abut against the outer surface of the clamping section, the first block workpieces and the second block workpieces are fixed on the second clamp through process screw holes, and mounting holes matched with the process screw holes in the first block workpieces and the second block workpieces are formed in the second clamp;

c. processing the outer side of the assembly body according to the structure of a preset working surface of the revolving body mold by using a numerical control processing machine tool to obtain a revolving body mold;

the clamp comprises a first clamp and a second clamp detachably connected with the first clamp, and the first clamp is provided with an outer contour matched with the inner contour of the assembly body; the first clamp comprises a clamping section and a supporting section fixedly connected with the clamping section, the outer contour of the clamping section is matched with the inner contour of the assembly body, and the supporting section is detachably connected with the second clamp.

2. The method of fabricating a multi-piece-assembled rotary body mold as claimed in claim 1, wherein in step c, the method further comprises fine-machining the structure of the working surface of the assembly body by using an electric discharge machine.