Tool for processing long and thin shaft sleeve for axially split pump

Abstract

The invention relates to the technical field of a tool for mechanical processing, in particular to a tool for processing a long and thin shaft sleeve for an axially split pump, which is characterized by comprising a boring cutter rod and a lathe carrier assembly, wherein the boring cuter rod is of a long and thin shaft rod, the central shafts of the two ends of the boring cutter rod are respectively provided with a tip positioning hole for jacking and positioning a tip, the boring cutter rod is radially provided with more than one floating cutter heat installing hole for installing floating cutter heads with different diameters, the floating cutter heads are arranged in the installing holes, one end of the boring cutter rod is provided with the lathe carrier assembly, the lathe carrier assembly comprises a positioning hoop, a fastening bolt and a torque rod, the positioning hoop is sleeved on the boring cutter rod and is radially provided with a positioning screw hole, the upper end of the fastening bolt is fixed with the torque rod in a crossed way, the lower end of the fastening bolt passes through the positioning screw hole in the fastening bolt to be contacted with the boring cutter rod, so that the boring cutter rod is fixed with the positioning hoop, and further, the lathe carrier assembly can transmit torque. Due to the adoption of the structure, the tool has the advantages that the structure is novel, inner holes at the two ends of the shaft sleeve can be processed at one-time clamping, the coaxiality and surface roughness of the inner holes can be ensured, etc.

Description

[0001] technical field [0002] The invention relates to the technical field of mechanical processing tooling, in particular to a processing tooling for slender shaft sleeves for split pumps. Background technique [0003] The existing shaft sleeves for split pump series are usually designed as two-piece shaft sleeves, and the configured shafts are divided into positive and negative rotations. According to market user feedback, wrong orders often occur when using positive and negative shafts. And it brings certain difficulties to production management. For this reason, the company requires a coaxial design, and at the same time, the pump bushing needs to be combined into one. The ratio of the length to the inner diameter of the newly designed bushing is relatively large, reaching 9~10:1 (see attached figure 1 ), the traditional processing method of this kind of slender shaft sleeve is: first rough machining on the lathe; then use the three-jaw chuck to clamp the outer circl...

AI Technical Summary

Problems solved by technology

When finishing the inner hole, there are the following disadvantages: one is that the workpiece is clamped too long, and the workpiece will vibrate when rotating; The required boring bar is relatively long, and the long boring bar will directly affect its rigidity

To sum up the above two points, the roundness of the inner hole after finishing is not enough, the coaxiality is too poor, there are obvious knife lines on the surface of the inner hole, and the surface roughness does not meet the requirements

Images