Indexing rotation device of processing machine

Abstract

The invention provides an indexing rotation device of a processing machine. The indexing rotation device is characterized in that a shaft which can perform indexing rotation under the drive of a power source is arranged in a base; a positioning mechanism is characterized in that the rotation shaft is fixedly provided with a rigid positioning disc; a pressing member for being driven to press a first side of the positioning disc is arranged on the base; a pressing annular surface for pressing a second side of the positioning disc is arranged on the base; the pressing member and the pressing annular surface clamp the positioning disc so as to position the rotation shaft; an air floating mechanism is characterized in that air feeding holes for outputting air are formed in the pressing annular surface of the base, the positioning disc of the positioning mechanism and the pressing annular surface of the base are separated from each other in an air floating manner, and then the power source drives the rotation shaft to perform indexing rotation; and in this way, the rigid positioning disc of the positioning mechanism can firmly position the rotation shaft, the whole rigidity can be effectively improved, and the processing precision can be ensured.

Description

technical field [0001] The invention relates to a rigid positioning plate using a positioning mechanism, which can not only stably position the rotating shaft, but also effectively improve the overall rigidity and ensure the processing precision of the indexing and rotating device of the processing machine. Background technique [0002] Nowadays, processing machines have evolved from three-axis machining to five-axis machining to meet various processing needs; please refer to figure 1 As shown, it is the new patent case of China Taiwan Announcement No. M456246 "Indexing Rotary Positioning Mechanism for Rotary Working Device of Processing Machine". It is provided with a shaft hole 101 in the base 10, and a There is a first cavity 102 for installing a bearing 103, and a second cavity 104 with a stopper 105 is provided at the rear end; a rotating shaft 11 is mounted in the shaft hole 101 of the base 10 with the bearing 103, and One end of the rotating shaft 11 is connected wit...

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Problems solved by technology

[0003] After the rotary shaft 11 is indexed, rotated and positioned, the workpiece of the pedestal 15 is then cut by the cutting tool on the processing machine. Since the rotary shaft 11 is mounted in the shaft hole 101 of the base 10 with the bearing 103, the bearing 103 itself has a bearing Therefore, the overall rigidity is not good, which leads to the deviation phenomenon of the rotating shaft 11 when the force is applied to the processing, which affects the processing accuracy of the workpiece. When the stop portion 105 clamps the resisting portion 131 of the positioning piece 13, the positioning piece 13 can be used to connect the pedestal 15 and the rotating shaft 11 to the base 10. However, since the positioning piece 13 is a thin, elastic circular piece , so that the positioning piece 13 cannot provide a stable rigid connection, resulting in the overall rigidity is still obviously insufficient, that is, the rotating shaft 11 cannot be stably positioned, and it is easy to affect the machining accuracy during the machining process.

[0004] When the pressing portion 142 of the push piece 141 and the stop portion 105 of the base 10 pinch the resisting portion 131 of the positioning piece 13, the positioning piece 13 is elastically deformed, and after long-term use, the positioning piece 13 is extremely It is easy to produce elastic fatigue phenomenon. When the pushing member 141 of the thrust group 14 is separated from the positioning piece 13, the positioning piece 13 will not return to its original shape, and when the driving shaft 11 rotates, the resisting part 131 of the positioning piece 13 will Rubbing against the stopper 105 of the base 10, and interfering with the rotation of the shaft 11, resulting in a loss of rotational power

[0005] When the resisting portion 131 of the positioning piece 13 rubs against the blocking portion 105 of the base 10, the blocking portion 131 of the positioning piece 13 and the blocking portion 105 of the base 10 will be rubbed. When clamping the resisting portion 131 of the positioning piece 13, it is very easy to cause a deviation in the positioning of the rotation angle position, thereby affecting the processing accuracy

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