Round rod clamping method and corresponding Macro or Mini conversion clamp of same and clamp application method

Abstract

The invention discloses a round rod clamping method and a corresponding Macro or Mini conversion clamp of the same and a clamp application method. A clamping hole of a clamp generates multistage micron-scale hole diameter reduction to clamp a round rod in the axial direction by mechanical external force, the Macro or Mini conversion clamp comprises a clamp head and a conversion piece which is connected and fastened to one end of the clamp head, wherein the clamp head is of a composite structure and comprises an outer sleeve body with an axial central hole and a pipe sleeve fixed in the axial central hole, the material of the pipe sleeve is wear-resistant, the hardness of the pipe sleeve is larger than that of the round bar and the outer sleeve body, the round bar is arranged in a smooth inner hole of the pipe sleeve with a micron-scale gap therebetween, and the conversion piece is connected and fastened to a standard Macro positioning piece. The mechanical external force is applied tothe outer sleeve body to transmit the mechanical external force to the pipe sleeve to enable the pipe sleeve to generate micron-scale deformation for clamping round rod, when the conversion clamp is applied, the clamping stability is good, a clamping inner hole is wear-resistant, the machining requirements of high precision can be met, and the precision of machined mold parts is higher; and the clamping inner hole is wear-resistant, so that the updating rate of the conversion clamp is low, the maintenance cost is low, and the production cost is reduced.

Description

technical field [0001] The invention relates to a common high-precision fixture for machining machine tools, in particular to a round bar clamping method, a corresponding Macro / Mini conversion fixture and a fixture application method. Background technique [0002] The process of processing cemented carbide powder mixture into a compact with a certain shape and size and a certain density and strength is called forming. Different forming methods require different types of presses and molds. With the continuous development of the cemented carbide industry in the direction of high precision and sharpness, the precision of molds for compact forming is getting higher and higher, especially in terms of geometry, fit clearance, parallelism, perpendicularity, and concentricity. How to make excellent molds requires strict control of the mold production process. In addition to the sense of responsibility of employees, the most important thing for high-precision machine tools is to mat...

AI Technical Summary

Problems solved by technology

At this time, a Macro / Mini 3R conversion fixture is needed. This fixture is sold in China by the Swedish SYSTEM 3R company. It adopts the principle of inner hole oil pressure thin spring ring to deform and clamp the 3R rod. Its structure is as follows: Figure 7 As shown, complex hydraulic equipment is required, the operation is complicated, and the input cost is high

Due to the accumulation of production, the standard 3R rod needs to be clamped and disassembled frequently in the Swedish SYSTEM Macro / Mini 3R conversion fixture, which makes the inner hole of the conversion fixture wear and tear, and the accuracy is reduced and cannot meet the high-precision processing requirements. The update rate is high and the maintenance The cost is high, which greatly increases the production cost

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