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我厂使用的一台7231A型龙門刨床长期以来存在着走刀不均匀現象,严重影响大型零件表面的加工质量,光洁度仅能达到▽_3～▽▽_4。更由于走刀量变化过大,使操作者不敢采用机床規格所尤許的吃刀深度而仅采用5～6毫米,否則会打断刨刀,損坏机床,因此大大降低了生产效率和机床利用率。为此,我們經过分析研究后将該机床走刀箱加以改装。該刨床有三个結构完全相同的走刀箱,可以实現刀架的上下左右快速及自动間歇送进。运动过程如下(見图1a)。正常間歇送进:运动由电动机1經过蝸杆3、蝸輪5、軸6、摩擦套10、漲环11、撥盘16及离合器23、22而使齿輪8轉动,从而带动光杠齿輪9或19而实現了
A 7231A gantry planer used by our factory has a long history of uneven cutting phenomenon, which seriously affects the processing quality of the surface of large parts, and the finish can only reach ▽ _3 ~ ▽▽ _4. More due to changes in the amount of walking too large, so that operators are not allowed to use the machine tool specifications to eat the depth of the knife and only 5 to 6 mm depth, otherwise it will interrupt the planer, damage to the machine, thus greatly reducing the production efficiency and machine tools Utilization rate. To this end, we analyzed and studied the machine tool box to be modified. The planer has three identical structure of the knife box, you can achieve up, down, left and right turret rapid and automatic intermittent feed. Exercise is as follows (see Figure 1a). Normal intermittent feed: movement from the motor 1 through the worm 3, the worm gear 5, the shaft 6, the friction sleeve 10, the ring 11, the dial 16 and the clutch 23, 22 and the gear 8 is rotated, thereby driving the light lever gear 9 Or 19 and achieved