CN201399717Y - External disc grinding and sponge grinding wheel polishing device - Google Patents

Abstract

The utility model relates to an outer circular sand disc grinding and sponge grinding wheel polishing device, which is characterized in that the device comprises a grinding tool, a motor (3) and a motor base (4), and the grinding tool is installed at the output end of the motor (3) , the motor (3) is installed on the tool rest (5) of the lathe through the motor base (4), and the grinding tool is a flap wheel or a sponge grinding wheel. The utility model uses a thousand-impeller sand grinding disc with large grinding force and no passivation of abrasive grains and a sponge grinding wheel without chip grinding, which overcomes all the shortcomings of the traditional abrasive belt and greatly improves the production efficiency and surface processing quality. , so that the surface roughness reached Ra0.8μm-0.4μm. The processing range of the lathe is expanded, and the grinding cost of the product is saved.

Description

External disc grinding and sponge grinding wheel polishing device

(1) Technical field

The utility model relates to an outer circular sand disc grinder and a sponge grinding wheel polishing device. It is specially used for ship repairing and building lathes. It belongs to the technical field of ship repairing and building equipment.

(2) Background technology

The machining accuracy of ordinary machine tools is usually IT8-IT7, and the surface roughness is generally Ra3.2 to Ra1.6μm. If you want to process parts with higher precision requirements, you must spend a lot of time and energy. For example, the stern shaft of a 53000T ship, the intermediate shaft, and the parts with a processing accuracy of IT7 or higher and a surface roughness of Ra0.8 μm or higher for key parts usually rely on grinding machines to complete their final processing. If there is no grinder, it should be done on a C61160 ordinary lathe. In the past, we used the process of rough turning, fine turning, and belt sanding, but the surface roughness can only reach Ra1.6 to 1.0μm at most, and it is difficult to reach Ra0.8μm. The reason is that the abrasive belt used for polishing is easy to wear, the abrasive grains are easy to fall off, and the metal powder is easily embedded in the abrasive belt to scratch the workpiece, resulting in a decrease in the quality of the processed surface, and the wear of the abrasive belt is very large, and frequent replacement of the abrasive belt is a waste of time. There are also many, so the cost of polishing with abrasive belts is relatively high.

(3) Contents of the invention

The purpose of this utility model is to overcome the above-mentioned shortcomings, and provide a kind of outer disc grinding and sponge grinding wheel polishing device specially used for lathes.

The purpose of this utility model is achieved like this: a kind of outer circle sand disc grinding and sponge emery wheel polishing device, comprise grinding tool, motor and motor base, described grinding tool is installed on the motor output end, and motor is installed on the lathe through the motor base On the tool holder, the grinding tool is a flap wheel or a sponge grinding wheel.

The beneficial effects of the utility model are:

The utility model uses a thousand-impeller sand grinding disc with large grinding force and no passivation of abrasive grains and a sponge grinding wheel without chip grinding, which overcomes all the shortcomings of the traditional abrasive belt and greatly improves production efficiency and surface processing quality. , so that the surface roughness can reach Ra0.8μm-0.4μm. The processing range of the lathe is expanded, and the grinding cost of the product is saved.

(4) Description of drawings

Fig. 1 is the structure schematic diagram of the utility model outer circle sand disc mill and sponge emery wheel polishing device.

In the picture:

Workpiece 1

Abrasives 2

motor 3

motor base 4

Tool holder 5.

(5) Specific implementation methods

Referring to Fig. 1, the utility model outer circle sand disc mill and sponge emery wheel polishing device are made up of two parts, and the one, thousand blade wheel emery disc mill, the 2nd, sponge emery wheel polisher. The thousand impeller sand disc mill is mainly composed of a motor 3 with a power of 0.25 watts and a speed of 2830 rpm, a thousand impeller with a diameter of 250mm and a grain size of 220 mesh, and a motor base 4 that is convenient for lathe clamping. The motor base 4 is installed On the tool rest 5 of the lathe.

The structure of the sponge grinding wheel polishing machine is similar to that of the thousand impeller sand disc grinding machine. The difference is that they use different abrasive tools. The polishing machine uses a sponge grinding wheel with soft material, small vibration, no sparks, no heat, no burns, and good embedding. .

When using this device, as long as there is still a machining allowance of about 0.15 mm after the finish turning of the workpiece 1, remove the turning tool and replace it with a thousand-impeller sand disc grinder, then the head speed of 10 rpm can be adjusted at a rate of 1-2 mm/min. Turn left and right for grinding, and the feed rate is better to see a little spark. After rough grinding until there is still a polishing allowance of about 0.02mm, replace the abrasive tool, install a sponge grinding wheel, and use the same speed and feed Polishing at a high speed, generally only one or two rounds can be used to obtain a surface roughness of Ra0.8μm-0.4μm.

Claims (1)

1. An outer circular sand disc grinding and sponge grinding wheel polishing device, which is specially used for shipbuilding and shipbuilding lathes, said device includes a grinding tool, a motor (3) and a motor base (4), and said grinding tool is installed on the motor (3) At the output end, the motor (3) is installed on the tool rest (5) of the lathe through the motor base (4), and the grinding tool is a flap wheel or a sponge grinding wheel.

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