Guide mechanism for counter weight of boring lathe main spindle box

The utility model provides a guide mechanism for the counter weight of a boring lathe main spindle box. The guide mechanism for the counter weight of the boring lathe main spindle box comprises an upright post, two guide rods, a guide sleeve and the counter weight, wherein the two guide rods are mounted inside the inner chamber of the upright post, the guide sleeve is mounted on the counter weight, and the guide sleeve is sleeved on the guide rod. The guide mechanism is characterized by further comprising support blocks, an adjusting cushion and an adjusting block, a plurality of positioning holes are formed in the vertical directions on the two sides of the upright post, the support blocks are mounted in the positioning holes, the adjusting cushion is mounted between the upright post and the support blocks, and the two guide rods are fixed on the support blocks on the two sides of the upright post; and the adjusting block is mounted between the guide sleeve and the counter weight. The guide mechanism for the