Mold design and manufacturing process

2019-09-23 18:22

Mold manufacturing design and processing process

First, the mold manufacturing process is as follows:

Review - preparation - processing - formwork processing - core processing - electrode processing - mold parts processing - inspection - assembly - flying mold - trial mode - production.

(1) Formwork processing:

(2) Core processing

(3) Mold parts processing


A/B board processing

Panel processing

Thimble fixing plate processing

Floor processing


Rough grinding

Milling machine processing

Wrench processing

CNC roughing

Heat treatment

Fine grinding

CNC finishing

Electric discharge machining

Provincial model

Slider processing

Compaction block processing

Split cone gate processing

Insert processing

Second, the mold frame processing details

(1) The number should be uniform, and the core should be numbered. It should be the same as the number on the mold frame and the direction is the same. It is not easy to make mistakes when assembling.

(2) A/B plate processing (ie, moving die frame processing)

A/B plate processing should ensure the parallelism and verticality of the mold frame is 0.02mm

Milling machine processing: screw hole, water hole, thimble hole, machine hole, chamfer

Wrench processing: tapping, trimming

(3) Panel processing: Milling machine processing machine nozzle hole or machining nozzle hole.

(4) thimble fixed plate processing: milling machine processing: the thimble plate and the B plate are connected with the back needle, the B plate faces upward, and the thimble hole is drilled from top to bottom, and the thimble head needs to turn the ejector plate back up, correct, first Roughing with a drill bit, then finishing with a milling cutter in place, chamfering.

(5) Floor processing: Milling machine processing: scribing, correction, boring, chamfering. (Note: Some molds need to be forced to pull the top of the strong to strengthen the top mechanism, such as adding screw holes in the thimble plate)

Third, core processing details

Roughing flying six sides: processing on the milling machine to ensure verticality and parallelism, leaving a grinding allowance of 1.2mm

Rough grinding: large water grinding processing, first grinding the large surface, clamping the small surface with the batch, ensuring the verticality and parallelism at 0.05mm, leaving the balance bilateral 0.6-0.8mm

Milling machine processing: first correct the milling machine head, ensure that within 0.02mm, correct the pressing workpiece, first processing screw holes, thimble holes, threading holes, inserting needles, thickening, machine nozzle or material nozzle hole, shunt Cone hole chamfering and then water hole, milling R angle

Wrench processing: tapping, typing code

CNC roughing

External heat treatment HRC48-52

Fine grinding; large water grinding to 0.04mm negative than the mold frame, ensuring parallelism and verticality within 0.02mm

CNC finishing

Electric discharge machining

Mode save, ensure smoothness, control cavity size

Processing into the gate, exhaust, zinc alloy in general, the gate opening 0.3-0.5mm, exhaust opening 0.06-0.1mm, aluminum alloy gate opening 0.5-1.2mm exhaust opening 0.1-0.2, plastic exhaust open 0.01 -0.02, try to be a little wider and thinner

Fourth, the slider processing technology

First, the milling machine roughs six sides

Fine grinding six sides to size requirements

Milling machine roughing table

The hanging table is refined to the size requirements and is slid with the mold frame

The milling machine processes the bevel to ensure that the slope is consistent with the pressing block, leaving the remaining flying mode

Drilling water and oblique guiding hole, the inclined guiding column hole is 1 mm larger than the guiding column, and chamfering, the inclination of the inclined guiding column hole should be 2 degrees smaller than the inclined slope of the sliding block. The inclined guide post hole can also be reworked together with the mold frame after flying and molding the upper mold, depending on different conditions.

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