A positioning and clamping tool and method

Abstract

The invention discloses a positioning clamping tool and a positioning clamping method for a computer numerical control machining center. The clamping tool comprises a positioning body, a first supporting body, a second supporting body, a positioning bolt and a fastener, wherein the positioning body is provided with a fixing end and a positioning end; the fixing end of the positioning body is fixed on a chuck of the computer numerical control machining center; the first supporting body, a part to be machined and the second supporting body are sequentially arranged at the positioning end of the positioning body in a sleeving manner, and are fixed through the fastener; one end of the positioning bolt is arranged at the positioning end of the positioning body in an insertion manner, and the other end of the positioning bolt is arranged on the part to be machined in an insertion manner, so that the part to be machined is radially fixed relative to the positioning body. The invention also discloses the positioning clamping method. According to the tool and the method, the part machining process can be easier and more quick, the rotation generated by the clamped part due to radial force is stopped, and the size and the form and location tolerance of the part can be better guaranteed in precision machining.

Description

technical field [0001] The invention belongs to the field of machining, and in particular relates to a positioning and clamping tool and method for machining revolving parts on a numerical control machining center. Background technique [0002] When processing blades on a CNC milling machine, there are defects in the traditional clamping method, such as processing method 1: first process the left end of the part with a lathe, and leave a section of craft chuck at the right end, and clamp the chuck on the CNC milling machine to mill out the blade , and then turn the right end to size. The disadvantage of this method is that the tool cuts directly into the part from the left end. Due to the sudden increase in cutting force, the surface finish of the blade is affected, and the deformation of the blade is also increased. After the blade is milled and formed Turning the size of the right end also increases the difficulty of turning the clamping and alignment; the second processin...

AI Technical Summary

Problems solved by technology

[0002] When processing blades on a CNC milling machine, there are defects in the traditional clamping method, such as processing method 1: first process the left end of the part with a lathe, and leave a section of craft chuck at the right end, and clamp the chuck on the CNC milling machine to mill out the blade , and then turn the right end to size. The disadvantage of this method is that the tool cuts directly into the part from the left end. Due to the sudden increase in cutting force, the surface finish of the blade is affected, and the deformation of the blade is also increased. After the blade is milled and formed Turning the size of the right end also increases the difficulty of turning the clamping and alignment; the second processing method first processes the left and right ends of the part, inserts the part directly into the mandrel and tightens it with nuts before milling. The disadvantage of this method is that the spindle of the CNC machine tool The speed is high, the parts are greatly affected by the cutting force, and the axial rotation is easy to occur, which makes the processing of the parts difficult, the scrap rate is high, and it is difficult to meet the accuracy required by the design drawings. The traditional method not only reduces the work efficiency, but also increases production. cost

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