34results about How to "Guaranteed wall thickness uniformity" patented technology

The invention discloses an air cylinder clamp. The air cylinder clamp comprises a base, spindle hole semicircular location blocks, clamping units and a cylinder hole slider linkage opening unit. Location end surface matched with to-be-located air cylinder front and rear stop spindle semicircular holes are arranged on the spindle hole semicircular location blocks. The clamping units are arranged on base location bosses on the inner sides of the spindle hole semicircular location blocks and comprise clamping supports, T-shaped screw pairs and clamping pressing blocks. A middle block bearing stop location block is provided with air cylinder bearing block location sides. The cylinder hole slider linkage opening unit comprises a base column and a cylinder hole slider component arranged at the top end of the base column. The air cylinder clamps clamp the air cylinder from the end and the sides, the measurement probe spot measurement function of a machining center spindle is used for finding reference coordinate values of machining of air cylinder process location pin holes, and accordingly, accurate machining of air cylinder process location pin holes is achieved, and the air cylinder hole wall thickness uniformity is guaranteed finally.

The invention relates to a hot reverse extrusion forming method for a titanium alloy cup-shaped part, and belongs to the technical field of hot reverse extrusion forming technologies. The machining method comprises the steps of placing a heated blank into an extrusion container to be subjected to reverse extrusion one-time forming by utilizing the guide positioning action of a material pressing insert, and the roughing blank making step in the forming process of the cup-shaped part is omitted. The material pressing insert guarantees that lugs of the cup-shaped part are flush through the tension action of a back pressure spring; and meanwhile, because a floating male die is in linkage with the back pressure spring with higher back pressure tension, it is achieved that the cup-shaped part can be demolded smoothly after being formed. With the hot reverse extrusion forming method for the titanium alloy cup-shaped part, the phenomenon that in the traditional reverse extrusion process, because one single unloading spring is overhigh in back pressure, the material of a wall of a cup-shaped part flows inwards sharply to tightly hold a male die, and demolding is difficult to carry out is avoided, and meanwhile the reverse extrusion forming force is reduced, and the requirement on equipment tonnage is lowered; and additionally, because a titanium alloy cup-shaped force piece is formed atone time by adopting reverse extrusion in the preparation process, the step of roughing blank prefabrication in the existing technology is omitted, the production period is shortened, the manufacturing cost is reduced, and the economic benefit is greatly improved.

The invention provides a machining method of an elongated thin-wall aluminum-based composite material pipe with uniform wall thickness. The machining method comprises the following steps that firstly,rough turning is carried out on an outer circle of the aluminum-based composite material pipe; secondly, destressing heat treatment is carried out, then an inner hole is roughly bored by using a special tool, then destressing heat treatment is carried out again, then destressing heat treatment is carried out after the outer circle of the aluminum-based composite material pipe is subjected to semi-finish turning, then a special tool is used for finely boring the inner hole, and finally finish turning is carried out on the outer circle. According to the machining method of the elongated thin-wall aluminum-based composite material pipe with the uniform wall thickness, the large length-diameter ratio thin-wall pipe can be produced, and the wall thickness uniformity, straightness and coaxiality can be guaranteed.

The present invention proposes a manufacturing process for a high-precision welding-free special copper coil, which includes the following steps: step 1, selecting high-purity cathode copper as a raw material to produce a blank tube, and making high-volatile drawing oil for use; step 2, using raw materials The produced blank tube is stretched with high volatile drawing oil, and the elongation coefficient of each stretch is controlled between 1.3-1.5, and after 7-9 passes of stretching, the semi-finished product is obtained; step 3, the stretched semi-finished product is obtained. For annealing, the annealing method adopts low-temperature annealing method; step 4, in the annealing process, inert gas is used for purging, and the purging method is that a vent pipe is connected to the outer port of the semi-finished product, and the inert gas is blown to the inner wall of the semi-finished product through the vent pipe. Sweep to obtain the final product, whereby the present invention has the advantages of being able to carry out the welding-free connection of the copper coil through the improvement of raw materials and technology, and at the same time ensuring the degree of fit.