Tight clamping jig

The utility model provides a tight clamping jig which comprises a bottom plate, a row of pressing rods are arranged on the bottom plate, one end of each pressing rod is fixedly connected with a traction limiting shaft which penetrates through the upper end face of the bottom plate and is in elastic sliding fit with the upper end face of the bottom plate, and a horizontal driving frame and a vertical driving frame are arranged below the bottom plate. The vertical driving frame is used for extruding the row of pressing rods on the irregular surface of a product so that each pressing rod can make contact with the irregular surface of the product, and the horizontal driving frame is used for locking the pressing rods in the clamping state so that the pressing rods can not shake or loosen. And furthermore, by arranging the horizontal driving frame and the vertical driving frame, the number of the input air cylinders can be greatly reduced, and cost input is reduced. 本实用新型提供一种紧密夹紧治具，包括底板，所述底板上设置有一排压杆，所述压杆的一端固定连接有贯穿