Polishing device capable of pre-adjusting pressure
A polishing device and pre-adjustment technology, which is applied to the device for fixing the grinding wheel, the grinding drive device, and the grinding/polishing equipment, etc., can solve the problem of low production efficiency, poor control of the fillet size, uneven fillet polishing amount, etc. problems, to achieve the effect of high production efficiency, uniform fillet polishing, and meeting production needs
Pending Publication Date: 2021-06-01
LIAONING 518 INTERNAL COMBUSTION ENGINE FITTINGS
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Problems solved by technology
This kind of crankshaft journal undercut groove fillet needs to be polished on the arc surface after turning or milling. The existing method is to hang the crankshaft on the polishing machine, position and clamp the crankshaft along The spindle center rotates; the hand-held wind trigger drives the impeller to rotate and polish the rounded corners of each journal of the crankshaft; according to the different arc sizes on the rounded corners of the undercut groove, different diameters of the impeller need to be selected for polishing, and the polishing volume of each part of the rounded corner Uneven, poor fillet size control, low production efficiency
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[0019] The present invention is specifically described below in conjunction with accompanying drawing, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Figure 5 , Figure 6 As shown, it includes an upper lining tile 3, a lower lining tile 6, and a rotary shaft 11. The upper lining tile 3 and the lower lining tile 6 are connected by the rotary shaft 11, and the upper and lower lining tiles rotate with the rotary shaft as the axis to realize closing, Open; Figure 2 is designed with flanges at both ends of the upper lining tile, and Figure 3 is designed with corresponding grooves at both ends of the lower lining tile. After the upper and lower lining tiles are closed, the flange and the groove cooperate to play a limiting role; including Axial positioning block 2, pressing block 7, rounded corner pressing block 9, abrasive belt strip 10, the rounded corner pressing block 9 is two long polyurethane blocks, fixedly installed on the upper lining tile 3 and the lower lining tile respectively In ...
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The invention discloses a polishing device capable of pre-adjusting pressure. The polishing device comprises an upper bushing, a lower bushing and a rotating shaft, wherein the upper bushing and the lower bushing are connected through the rotating shaft; the polishing device further comprises axial positioning blocks, pressing blocks, round corner pressing blocks and an abrasive belt; the round corner pressing blocks are two strip-shaped polyurethane blocks and are fixedly installed in positioning grooves of the upper bushing and the bushing separately; after the upper bushing and the lower bushing are closed to form a whole circle, the two round corner pressing blocks are symmetrically distributed on the circumference in a 180-degree manner; the round corner pressing blocks are arranged in a profiling manner; two axial positioning blocks are fixedly installed on one end surface of the positioning groove of the upper bushing and one end surface of the positioning groove of the lower bushing through screws separately; and one end of the abrasive belt penetrates through the positions between the axial positioning blocks and the round corner pressing blocks, and the other end of the abrasive belt penetrates through the positions between the pressing blocks and the round corner pressing blocks. The polishing device has the advantages that overall polishing of a crankshaft journal undercutting groove round corner is achieved, the production requirement for crankshaft journal undercutting groove round corner polishing is met, and the polishing device has good application prospects.
Description
technical field [0001] The invention relates to the field of crankshaft processing, in particular to a polishing device for crankshafts. Background technique [0002] The crankshaft is a key component in the engine. Most of the fracture failures of the crankshaft are due to the rough surface processing of the journal fillet and poor control of the fillet size. Therefore, when the crankshaft is working, a large stress concentration is generated at the journal fillet, and The fatigue life of the crankshaft is shortened. The journal fillets of marine crankshafts are often designed in the form of undercut groove fillets, and its function is to reduce the stress concentration of the crankshaft at the crankshaft journal fillets during engine operation. This kind of crankshaft journal undercut groove fillet needs to be polished on the arc surface after turning or milling. The existing method is to hang the crankshaft on the polishing machine, position and clamp the crankshaft alon...
Claims
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IPC IPC(8): B24B29/02B24B27/00B24B5/42B24B41/00B24B41/04B24B45/00B24B47/22
CPCB24B5/423B24B27/0076B24B29/02B24B41/007B24B41/04B24B45/003B24B47/22
Inventor 王吉斌
Owner LIAONING 518 INTERNAL COMBUSTION ENGINE FITTINGS