The following explains how to choose the grinding wheel of high-precision double-end grinding machine
Explained belowHigh-precision double-face grinding machineHow to choose the grinding wheel
The grinding wheel is made of abrasive and bonding agent, usually round and annular. It grinds the workpiece by rotating. This kind of grinding wheel is called double-end grinding wheel.
The grinding wheels commonly used in the market are the following
(1) Single-coated grinding wheel, this kind of grinding wheel is made of a layer of CBN material electroplated on the steel substrate. Because of its characteristics, steel is easy to electroplate, so it becomes a suitable substrate material, which is mainly used for rough machining with not very strict geometric tolerances.
(2) Multi-layer grinding wheel, the base is made of iron and aluminum alloy, and the multi-layer CBN material is embedded, usually the thickness of the CBN layer is 5mm, which is mainly used for high-precision grinding technology.
Grinding Method of High-precision Double-face Grinding Machine
High-precision double-face grinding machineUse two grinding heads to grind two parallel planes of the workpiece together, there are horizontal axis and vertical axis. The workpiece is guided through the grinding wheel by linear or rotary feed equipment. This grinder has high power and is suitable for bearing rings and piston rings. Mass production.
Compared with the surface grinder of wheel flange grinding, the surface grinder of grinding wheel end face grinding has higher productivity, because the diameter of the grinding wheel end face grinding is often larger, and the full width of the workpiece can be ground at the same time, and the grinding area is larger. However, when the high-precision double-end grinder is grinding, the grinding wheel and the workpiece surface are in arc line or surface contact, the contact area is large, cooling is difficult, and the chip is not easy to remove, so the machining accuracy and surface roughness is poor.
In addition, the round table is only suitable for grinding the end faces of small parts and large diameter ring parts, not suitable for grinding long parts, and the rectangular table can easily grind various common parts, including ring parts with a diameter smaller than the width of the rectangular table, so it is better to choose the one that suits you.
High-precision double-face grinding machineInstallation requirements of grinding wheel:
1. The grinding wheel hole of the high-precision double-sided grinder needs to be slidably installed on the grinding wheel spindle or grinding wheel chuck, and maintain a proper gap.
2. When the diameter of the grinding wheel is too large, a shrink sleeve is allowed. The thickness of the bushing shall not exceed both sides of the grinding wheel and shall not be less than 1/2 of the thickness of the grinding wheel. It is not allowed to use shrink bushings to install grinding wheels with a diameter larger than the diameter of the grinding machine, and it is allowed to use grinding wheels with a larger diameter.
3. The gasket made of flexible materials (such as asbestos rubber sheet, etc.) needs to be lined between the grinding wheel and the pressing surface of the grinding wheel chuck of the high-precision double-sided grinding machine, with a thickness of 1-2mm and a diameter of 2mm larger than the pressing surface. 4. When installing the grinding wheel, grinding wheel shaft, gasket and grinding wheel chuck, the mating surface and pressing surface should be kept clean and free of any attachments.
5. When installing the double-sided grinder, pay attention to the tightening degree of the compression nut or screw. It should be compressed enough to drive the grinding wheel not to slide, so as to avoid damage to the grinding wheel due to excessive pressure. If there are multiple compression screws, press the diagonal Tighten gradually in sequence, and the tightening force should be uniform: a force wrench should be used when conditions permit.
6. When installing sand tile, the compression length needs to be greater than the width of sand tile, and the center of the installed sand tile assembly should be aligned with the rotation center of the spindle.
Well, that's all for today. Thank you for watching. If you need to purchaseHigh-precision double-face grinding machineYou can consult our company.
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We decide the quality of the pros and cons · Quality determines the user's choice
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The CNC double disc grinding machine can be used for high-precision grinding of two end surfaces of large-size parts such as a connecting rod of a diesel engine, a carbon ceramic plate, a carbon ceramic brake disc, a cylinder cover, a valve block, a square cylinder cover and the like, adopts reciprocating motion and plunge grinding, and mainly comprises a four-axis numerical control system;
The precision double disc grinding machine is suitable for high-precision processing of two end faces of parts with various shapes and different materials, is especially suitable for workpieces such as air conditioning compressor cylinders, silicon blocks, monocrystalline silicon wafers, cross shafts, valve blocks and the like, and can grind workpieces with large allowance and high precision requirements to finish the products at one time;
The carbon ceramic brake disc is made of special materials to solve the characteristics of wear resistance and weight reduction, but it also brings the problem of difficult processing.
By switching different fixtures, this double disc grinding machine can grind motorcycle connecting rods, mobile phone edge strips, mobile phone frames, bearings, pistons, piston pins, wool scissors blades, crankshaft bush covers, cams, sliders and many other products.
The horizontal spindle double disc grinding machine is widely used because of its strong versatility, simple fixture, easy and fast to switch varieties, high grinding efficiency, strong rigidity, good stability, small power, low grinding cost and low price.
The double disc grinding machine is suitable for grinding parts of various shapes and different materials on the upper and lower surfaces, especially parts with high requirements for verticality, flatness and parallelism, such as bearings, pistons, stamping parts, cam pieces, piston pins, rollers, ceramic parts, etc.
The through-type double disc grinding machine can be used for powerful grinding, is an ideal double disc grinding machine for grinding multi-specification products by a single machine, and is mainly used for grinding round or square and rectangular large-specification parts such as bearings, bicycle disc brakes, gear rings, notebook aluminum plates, compressor valve plates, robot gears, blades, air compressor valve plates, aluminum plates and the like.