V-shaped clamping lathe clamp

Abstract

The invention discloses a V-shaped clamping lathe clamp. The V-shaped clamping lathe clamp comprises a base (1), the base (1) is connected with a guide plate (2), a guide groove (201) is formed in themiddle of the guide plate (2); a V-shaped positioning block (3) is arranged on the inner side of the guide groove (201); the V-shaped positioning block (3) is provided with a first clamping group andthe V-shaped positioning block (3) is provided with a first V-shaped clamping surface (301), the upper end of the guide plate (2) is connected with a pressing block (4), the upper end of the pressingblock (4) is provided with a second V-shaped clamping surface (401). According to the V-shaped clamping lathe clamp, the processing efficiency and the processing quality of the workpiece can be effectively improved, and the labor intensity of workers is reduced.

Description

technical field [0001] The invention relates to a lathe fixture for an inclined-axis plunger pump casing, in particular to a V-shaped clamping lathe fixture. Background technique [0002] At present, the casing of the inclined-axis plunger pump is generally in the shape of a cylinder, with a special-shaped protrusion on the outer wall of the cylinder, a rectangular mounting plate on one side of the cylinder, and a hollow chamber inside the cylinder. The manufacturer's processing method for the shell is to first use an ordinary lathe to clamp the outer circular surface of the casting with the shape of the shell through a four-jaw chuck, and then process one end of the clamped casting to form a positioning hole, and then use the positioning hole to Subsequent finishing is done for the machining datum surface, so as to facilitate the installation and positioning of the workpiece during subsequent finishing and improve its machining accuracy. However, since the four-jaw chuck c...

AI Technical Summary

Problems solved by technology

However, since the four-jaw chuck cannot position the end face of the mounting plate of the workpiece during clamping, the circular runout between the outer circular surface of the workpiece and the vertical surface of the mounting plate after clamping is relatively large, requiring workers to correct the mounting plate during the clamping process. Correct the position of each workpiece so that the circular runout of the workpiece after correction can be kept within 0.5mm

Moreover, after the shell casting is processed and formed, its mounting plate will be affected by the draft angle and will be in a shape with a high middle and low surroundings, and when the chuck clamps the outer wall of the casting, the casting will be deformed due to the hollow structure. Slight deformation, which increases the deformation and position offset of the mounting plate, and increases the difficulty for workers to locate the end face of the workpiece

[0003] It takes 5 to 6 minutes for conventional workers to correct and clamp each shell workpiece, which seriously increases the labor intensity of the workers and reduces the processing efficiency of the workpiece; and different workpieces will have positioning errors during the calibration process, resulting in The workpiece has poor consistency after processing

In addition, this positioning method will also make the tolerance of the positioning hole of the workpiece after processing only within the range of 0 ~ +0.1mm, the processing quality is poor, and the number of rework is more

Therefore, the existing clamping structure for the shell workpiece will cause the problems of low processing efficiency, poor processing quality and high labor intensity of workers

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