Molding process of gantry lathe bed with weight of more than 15 tons

Abstract

The invention discloses a modeling process of a gantry lathe bed with the weight being 15 tons or above. The modeling process comprises the following steps that box distribution operation is carried out; firstly, after the chaplet is placed, broken sand in a cavity is sucked out; after an inner cavity is cleaned, a contact surface is ground flat, a sprue cup and a riser ring are placed, and the sprue cup and the riser ring are sealed with resin sand and closed; and finally, box pressing is conducted through a diagonal fixing method, and the sand box is fastened through bolt pieces. Performing outer membrane operation: filling the mixed sand into a sand box; after the sand box is fully filled, the plane of the box is scraped to be flat, and the casting head plane is compacted; after continuous sand discharging is finished, drawing after waiting for a period of time; and blowing off residual sand after drawing, and resetting the loose piece casting head. Compared with other casting molding processes, the lathe bed adopts an upper and lower template sand box molding and middle ring opening process, so that the process obviously reduces the single-piece total weight of molding sand boxes and molding sand, ensures that the hoisting weight does not exceed the allowable load of an existing traveling crane in a workshop, greatly improves the pouring efficiency, saves the cost and greatly improves the rate of finished products.

Description

technical field [0001] The invention relates to a molding process for a gantry bed of more than 15 tons, and belongs to the technical field of machine tool component manufacturing. Background technique [0002] The bed is one of the main components of the machine tool. In order to ensure the cutting accuracy of the machine tool, there are high requirements for the structural stability and rigidity of the workpiece. Due to its large size and high weight, the large gantry bed is relatively large in size and high in weight as the sand box used in the pouring process. During the sealing process, the crane needs to have a higher load, and the process is more complicated, which increases the difficulty of the molding process design. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a molding process for a gantry bed of more than 15 tons, thereby solving the above-mentioned technical problems. [0004] In...

AI Technical Summary

Problems solved by technology

During the sealing process, the crane needs to have a higher load, and the process is more complicated, which increases the difficulty of the molding process design