5results about How to "Guaranteed contour" patented technology

This invention discloses a swashplate-based lapping device for lapping a swashplate and a swashplate base. The bottom surface of the swashplate has a first arc-shaped curved surface, and the top surface of the swashplate base has a second arc-shaped curved surface that mates with the first arc-shaped curved surface. The device includes: a drive component for driving the swashplate to reciprocate on the swashplate base; a support assembly for supporting the drive component; and a base assembly for fixing the swashplate base. This invention ensures close contact between the swashplate and the swashplate base, resulting in more uniform pressure contact on the arc surface. It solves the problem of uneven force distribution and difficulty in ensuring contour accuracy caused by manual operation, greatly improving machining accuracy and efficiency. Furthermore, this structure converts rotary motion into reciprocating linear motion, making operation more convenient.

The utility model discloses a special template for assembling and welding a roof framework of a passenger car, which belongs to the field of frame welding and comprises a template body, a first flat gasket is mounted at the upper top end of the template body through a cylindrical head socket head cap screw, a compression component is arranged on one side of the template body, and a second flat gasket is mounted at the other side of the template body. The pressing assembly comprises an edge beam pressing device and a pressing device screw combination, the edge beam pressing device is installed at the upper top end of the first flat gasket, the pressing device screw combination is installed on the outer wall of the edge beam pressing device, and through cooperative use of all the devices, in the machining process, the edge beam pressing device is used for pressing the edge, so that the machining efficiency is improved. The profile tolerance between the camber beam and the edge beam is guaranteed so as to achieve the effect of improving the flatness, meanwhile, the flatness between the longitudinal beam and the camber beam is guaranteed through the inner base plate and the outer base plate, the accuracy of the coach roof during machining and welding is further improved, the welding quality is improved, and the consistency between formworks can be improved through the arrangement of the multiple fixing plates.

The invention discloses a circular knife die-cutting and nesting material-saving device for U-shaped products. The device comprises a main circular knife machine, wherein the main circular knife of the main circular knife machine is a regular U-shaped wire knife with an opening facing upward in a circumferential array, and the inner straight upper ends of adjacent regular U-shaped wire knives are connected by arc lines to form an inverted U-shaped wire knife with an opening facing downward. The main film enters the main circular knife for processing into a first half film and a second half film, and the first half film is separated by a first steel roller and rotated to the lower end to move backward. A plurality of inverted U-shaped holes with openings facing downward are evenly distributed on the first half film, and an auxiliary film is attached to the lower surface of the first half film to become a first semi-finished product. The second half film moves forward, and a plurality of regular U-shaped holes with openings facing upward are evenly distributed on the second half film, and another auxiliary film is attached to the lower surface of the second half film to become a second semi-finished product. The invention has the effects of high utilization rate of the main film, cost saving, high yield rate, and high production speed.

The invention belongs to the field of aero-engines, and particularly relates to a deformation control method for a high-temperature alloy inner runner ring type casing. Reasonable planning is carried out in the aspects of a process route, a clamping mode, a cutting tool, a path and the like, the deformation control method of the inner runner ring type casing is mastered, and it is guaranteed that the profile tolerance and the size of a part runner face meet the requirements.

The utility model discloses a fuel urea box module welding mold, and belongs to the technical field of welding molds. The fuel urea box module welding mold comprises an upper mold assembly, a lower mold assembly and a heating plate mechanism, wherein the heating plate mechanism is arranged between the upper mold assembly and the lower mold assembly; the heating plate mechanism comprises a first heating plate assembly and a second heating plate assembly, and the first heating plate assembly and the second heating plate assembly are arranged in parallel; the upper die assembly and the lower die assembly each comprise a bottom plate, a supporting assembly and a shape correcting mechanism. The fuel urea box module is limited and fixed through the upper mold assembly and the lower mold assembly, the heating plate mechanism heats and melts the welding face, the uniformity of the temperature of the welding face is guaranteed, and welding is conducted; the supporting assembly constructs a containing cavity according to the shape of the fuel oil urea box module so as to place and support the fuel oil urea box module. The shape correcting mechanism flattens deformation generated in the product injection molding and cooling process before welding, so that the profile tolerance and straightness of the product and the flatness of the welding face are guaranteed.