鹰潭The standard molding process and processing equipment are mainly those

(1) A die is generally composed of a concave die, a punch and a die, and some may be a multi-piece hybrid module. Therefore, the combination of upper and lower die, the combination of insert and cavity, and the combination between modules require high machining accuracy. The dimensional accuracy of precision molds is often up to M-level.

(2) The shape surface is complex: some products such as automobile covering parts, aircraft parts, toys, household appliances, the shape of the surface is composed of a variety of curved surfaces, therefore, the mold cavity surface is very complex. Some surfaces must be treated mathematically.

(3) Small batch: The production of molds is not mass production, and in many cases, only one payment is produced.

(4) Die embryo processing process: die processing always use milling, boring, drilling, reaming and tapping and other processes.

(5) Repetitive production: the use of the mold has a life. When the use of a mold exceeds its life, it is necessary to replace a new mold, so the production of molds is often repetitive.

(6) Copying processing: Sometimes there is no drawing or data in mold production, and copying processing should be carried out according to the physical object. This requires high imitation accuracy and no deformation.

(7) Excellent mold materials, high hardness of the main materials of the mold are made of high-quality alloy steel, especially high-life molds, often made of Letenite steel such as Crl2, CrWMn. This kind of steel has strict requirements from blank forging, processing to heat treatment. Therefore, the preparation of processing technology can not be ignored, and heat treatment deformation is also a problem that needs to be treated seriously in processing.

According to the above characteristics, in the selection of machine tools to meet the processing requirements as much as possible. For example, the function of the CNC system is strong, the precision of the machine tool is high, the rigidity is better, the thermal stability is better, and the function of copying is good.

Standard mold processing equipment mainly have those

The base of the mold is easy to install the mold, and plays the role of supporting, protecting and connecting the key components of the mold (mold core);

Because the mold embryo does not participate in molding, its shape does not change with the change of parts, only the size and structure of the part, so you can standardize the mold embryo, that is, the mold embryo form is roughly similar, only the size, thickness and thickness change, it is very convenient to process after standardization, the mold embryo factory can first process various sizes of different specifications of the mold embryo parts (templates, guide posts), etc. Then according to customer needs to form a set of molds. The standards of the mould include Longji, Futeba, HASCO, etc.

Standard mold processing equipment is mainly milling machine, grinding machine, drilling machine. Milling machine, grinding machine processing 6 faces bright to the specified size. Die embryo processing drilling machine on the die embryo precision requirements are not high: such as screw hole, ring hole drilling, tapping. The most basic requirement of a standard mold is to open the mold smoothly.

The smooth opening of the mold is directly related to the precision of the 4 guide post holes. Therefore, in general, it is necessary to use CNC vertical machining centers for rapid drilling and boring to achieve precision.

The various parts of the mold processing should have sufficient strength and stiffness to prevent damage and deformation during use, and the fastening parts should have anti-loosening measures to avoid accidental injury to the operator;

It is not allowed to occur in the process of waste or workpiece missile phenomenon, affect the operator's attention, and even hurt the operator. In addition, to avoid cutting burrs cut hands. The mold processing does not allow the operator to have too large a motion range during the stamping operation to avoid the posture that makes the body lose stability; Do not allow excessive and over-accurate movements during the job.

Strong noise and vibration should be avoided when stamping. The mold weight should be marked on the general drawing in the mold processing design to facilitate installation and ensure safety. More than 20 kg of parts processing should have lifting handling measures to reduce labor intensity. It should be convenient and safe to install and disassemble the mold processing parts, and avoid the possibility of clamping and cutting hands; The mold should be easy to disassemble and store.

The process of mold embryo processing is summarized

1, bottom processing, processing quantity guarantee;

2, casting standard alignment, 2D, 3D profile margin check;

3, 2D, 3D surface rough processing, non-installation non-working plane processing (including safety platform surface, buffer installation surface, pressure plate plane, side datum surface);

4, before semi-finishing, the alignment of the side datum surface to ensure accuracy;

5, semi-finishing 2D and 3D surfaces, finishing all kinds of installation faces (including limit block installation surface and contact surface, insert installation surface and back, punch installation surface, waste cutter installation surface and back, spring installation surface and contact surface, all kinds of travel limit working face, oblique wedge installation surface and back), semi-finishing all kinds of guide faces and guide holes, Keep the residual finishing process reference hole and height reference surface, and record the data;

6. Check and review machining accuracy;

7, clamping process;

8, before finishing, the datum surface of the process reference hole is straightening, and the insert allowance is checked;

9. Finishing surface 2D, 3D, side punching surface and hole position, finishing process reference hole and height reference, finishing guide surface and guide hole;

10. Check and review machining accuracy.