About the dalian mould processing analysis of all kinds of surface

About the dalian mould processing analysis of all kinds of surface

precisionMould processingThe development of more and more high to the requirement of measurement.Three coordinate measuring machine precision, has long been restricted by environment, seldom use at the scene of the production.A new generation of three coordinates measuring machine basically all have temperature compensation and vibration materials, improve the dust prevention measures, improve the reliability of using environmental adaptability and make it can be used conveniently installed in the workshop, in order to realize the measurement of the scene.Dalian mold processing plant for processing are analyzed.

1) forming on the surface of the processing

Forming on the surface of the classification method are many, from the mold manufacturing process point of view has the following several ways:

(1) when the profile of hole, called type hole;When the surface is blind hole, called a cavity.

(2) according to the coordinate point of variable number is different, and divided into 2 d surface (flat surface) and 3 d surface (three-dimensional surface).

Type (3) according to the different cross section geometry characteristics, and is divided into circular cross section and profiled (surface).

(4) according to the forming on the surface of solid materials, divided into exterior surface and inner surface.

For forming surface machining method, according to the machining mechanism is different, can be divided into three categories:

(1) the last is to use the precision casting, extrusion, molding methods of special processing, under the condition of a certain shows its unique superiority.

(2) the use of electricity, heat, light, chemical energy to power the special processing methods, is a kind of new, has great development prospects of the processing method, it is becoming more and more important in the role of mold parts processing.

(3) the clockwork machining of metal cutting processing method is the oldest, the most widely used processing method, is also the basic method of mold parts processing.

Forming surface not only require high dimensional accuracy and surface roughness requirement is high.Therefore, forming on the surface of the processing is divided into two steps:

(1) size processing, through a variety of different ways to meet the design drawing the size of the required precision and position accuracy.

(2) by grinding and polishing finishing processing, make the forming surface is required to meet the design pattern of accuracy, surface roughness and shape it is particularly important for forming surface.

2) the surface shape of the processing

All kinds of mold parts processing and surface processing start from the appearance, as well as forming on the surface of the surface structure and the subsequent processing and lay the foundation.In the blank design and mold parts processing, should make machining allowance on the surface of the appropriate appearance, to avoid the material waste and reduce the subsequent processing work.For forging and casting blank, the blank processing stages should be necessary annealing and aging heat treatment, to reduce the material internal stress and microstructure good preparation for subsequent processing.

For external surface of a cylinder or cone shape, turning on a lathe processing, usually by a card, outside the turning on the surface of the rotating cutting face at the same time, and can be conducted in the center drilling, reaming, boring, to ensure that the surface of the coaxial degree, vertical degree requirements.For larger size and quality of parts, use on the vertical lathe processing, more easy to find and install card already so, also easy to ensure machining accuracy;For long and thin shaft parts, due to the poor stiffness, should take on both ends of the card and supporting measures for turning;For the bus for the curve of revolving parts, we adopt numerical control lathe processing, use type surface samples for inspection.In medium and small parts with ordinary lathe processing;

Flat surface shape of the processing can be in shaping machine, vertical milling machine, planing and milling planer, to remove the bulk of the machining allowance on the blank.From the consideration on the production efficiency, large flat with double housing planer cutting processing;Medium plane with shaper cutting processing;Medium and small plane with vertical milling machine milling.Planar contour surface is obtained by the above process can be the basic shapes and sizes, but flat surface is rough, parallelism and perpendicularity are low, again through the subsequent process of plane grinding regulation to achieve the size and surface roughness, parallel degree, vertical degree requirements.On the surface of the adjacent vertical degree requirements, general on surface grinding machine grinding after using special fixture positioning clamping, to ensure that the vertical degree requirements, precision inspection can be measured by square.For surface shape of rectangle and square blocks and block of complex shape in general should be six flat plane grinding, and parallel and vertical degree requirements, to ensure that subsequent marking, the processing, the measurement needs.

3) structure on the surface of the processing

Mould parts of the surface of the structure, because of their role is different, so the shape also have each different, but mostly simple geometric shapes.Look from the processing method, using the general metal cutting machining method can be implemented.Structure in the surface except plane, inclined plane, cylinder, cone surface, with different cross section shape of groove, half pass trough, the steps of the different shape hole, the number on the tool milling machine for processing.

For large and medium-sized flat parts, middle parts with hole, after the line with vertical milling cutter milling on the vertical milling machine, the walls between with circular arc, arc size depends on the vertical milling cutter diameter.When in the middle of the slotting machine on slotting large hole, the hole should be prepared beforehand, slotting after a right Angle connection between the walls.Steps for the square hole of form and abnormity bores and the square and special-shaped blind holes, must be on the vertical milling machine or tool milling machine with vertical milling cutter in milling, make each vertical plane to arc type hole faces.

Structural surface in mold, to assure the related between the various parts of the size and location accuracy, for the reliability of the connection and mutual movement plays a very important role.The shape of the structure surface is various, and different parts have different material and heat treatment requirements.In the process arrangement, must according to the structure on the surface of the various parts of the function and its relationship with other related parts.