Sliding block guide and precision adjustment structure applied to hot blanking press machine

Abstract

The invention provides a sliding block guide and precision adjustment structure applied to a hot blanking press machine. The sliding block guide and precision adjustment structure comprises a left stand column, a right stand column, a front guide plate and a rear guide plate, wherein the left stand column and the right stand column are located at the left and right ends of a sliding block correspondingly, and front guide plate and the rear guide plate are located on the front and rear sides of the sliding block correspondingly. The front guide plate and the rear guide plate are connected withthe left stand column and the right stand column through guide plate adjusting bolts, two protruding blocks are symmetrically and vertically arranged at the left ends of the inner side walls of the front guide plate and the rear guide plate, and grooves corresponding to the protruding blocks are formed in the sliding block. The sliding block is slidably connected with the left stand column and thegrooves are slidably connected with the left side surfaces and the bottom surfaces of the protruding blocks, and the sliding block and the right stand column are arranged at intervals. By adopting the sliding block guide and precision adjustment structure, the sliding block guide and precision adjustment structure applied to the hot blanking press machine is reasonable in design, the degree of freedom of the sliding block in the nonmoving direction is limited, the running accuracy of the sliding block is guaranteed; the sliding block guide and precision adjustment structure applied to the hotblanking press machine can effectively prevent the sliding block from jamming in a guide rail gap after heating expansion, prolong the service life of mould and meet the market requirements.

Description

technical field [0001] The invention relates to a slider guide and precision adjustment structure suitable for a hot blanking press. Background technique [0002] Forging equipment, whether it is a crankshaft mechanical press, a screw press or a hydraulic press, the slide block is its most important component. Since the slider needs to carry a precise and expensive mold to forge and press the workpiece, not only must the qualified parts be processed, but also the service life of the mold and equipment must be extended as much as possible, so its movement accuracy is very high. The movement accuracy of the slider is the most important accuracy acceptance index of the press. These accuracy acceptance indexes are clearly stipulated in the relevant national, industry or enterprise standards, such as "GB / T 10924-2009 Closed Single and Double Point Press Accuracy ", "JB / T 5198-2007 Die Forging Screw Press Accuracy", "GB 9166-88 Four-column Hydraulic Press Accuracy", etc. There a...

AI Technical Summary

Problems solved by technology

At present, the guide structure of the slider mainly includes the four-corner and eight-plane right-angle guide rail guide suitable for wide-table closed double-point or four-point presses, the four-corner four-plane 45-degree guide rail guide suitable for small table single-point presses, and the four-column The four-corner and four-cylindrical guide rails of the hydraulic press are well-suited for cold processing, such as blanking, stretching, and punching of automotive panels, but are not suitable for hot processing, especially when the workpiece is thinner. When it is necessary to use a two-point press for edge trimming, punching, and calibration of the workpiece after final forging, due to the high temperature of the workpiece and the effect of heat conduction, the temperature of the slider changes during the transition from shutdown to use of the equipment. The length of the slider and the gap of the guide rail also change, which leads to unstable guiding accuracy of the slider. If the guide gap and accuracy are adjusted according to the standard at room temperature, as the temperature of the slider increases, the slider will expand due to heat. It will cause the guide gap to become smaller, and may even be squeezed to death. The lubricating oil film will be broken, which will accelerate the wear of the guide rail, and the guide gap will be lost soon; The gap is larger, in this case, the guide accuracy of the slider at room temperature or low temperature is also very poor, and it will shake left and right in the guide rail

Therefore, at present, the guide structure with equal constraints on the four corners of the slider is used, especially the guide structure for thermal processing of slender parts. The guide precision of the slider is low and unstable, which affects the machining accuracy of the workpiece, easily causes mold damage, and increases costs.

[0004] The national invention patent with the publication number CN107756862A discloses the technical solution of the guide rail structure of the press that can avoid thermal expansion, which solves the problem that the slider will be stuck in the guide rail gap after thermal expansion, but the structure expands freely after heating, and the bumps The gap between the groove and the groove increases, and there is a problem that the slider moves in a non-advancing direction, and the precision is not easy to control, which cannot meet the market's requirements for the slider's running accuracy

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