47results about How to "Good cross section quality" patented technology

The invention provides a workpiece notch stamping device, comprising an upper die base, an upper die, a lower die base, a lower die and a workpiece positioning mechanism, wherein the upper die base is connected with a press; the upper die is arranged on the upper die base; the lower die base is arranged below the upper die base; the lower die is arranged on the lower die base and is matched with the upper die to form stamping space of stamped workpieces; and the workpiece positioning mechanism for positioning the workpieces is arranged on the lower die. The device has the characteristics of simple structure, convenient operation, operation time saving, low labor intensity, stable quality and the like, is suitable for mass production and improves the production efficiency.

The invention relates to a plane edge-pressing and semi-fine blanking device and a method. The device is provided with a plane pressure plate and a concave die, when a workpiece is punched, the plane pressure plate needs to enable edge-pressing force to press on the outer edge of a profile of the workpiece on a workpiece blank, and the edge-pressing force can generate great friction force betweenthe surface of the workpiece blank and the plane pressure plate and between the surface of the workpiece blank and the concave die, so as to prevent the material of the workpiece blank from flowing out of the profile of the workpiece. The device is matched with punching force, three-dimensional pressure stress is generated in the material of the workpiece blank in an extrusion zone, and plastic flow is generated, so as to enable the numerical values of the pressure stress in the three-dimensional directions to tend to be consistent, enable the material of the workpiece blank in the profile ofthe workpiece to be in the hydrostatic pressure state and have a maximal plastic deformation range, reduce a region for generating tensile stress in a shearing deformation zone and prevent the emergence of cracks on the surface of a cross section of the workpiece. By using the plane edge-pressing and semi-fine blanking device and the method, an ordinary punch can be used, the processing of a die is simple, a pressurization region on the workpiece blank can not cause damages, the processing cost is low, the quality of the workpiece is high, and the device and the method are convenient to popularize and apply in the punching industry.

The invention relates to a pneumatically controlled double-stage shear precision separation device for cutting metal rods and tubes. It consists of a pneumatic forging and shearing mechanism for rods and tubes that is separated from the inner side of the rod and tube material clamping mechanism. The rod and tube material clamping mechanism includes a V-shaped support and a V-shaped cylinder that is located above the V-shaped support and driven by a pneumatic system. The block; rod and tube material pneumatic forging and shearing mechanism includes an impact cylinder base and an impact cylinder located above the impact cylinder base and driven by a pneumatic system, and a rod and tube material forging sleeve is installed at the lower end of the impact cylinder. When working, the pneumatic system controls the cylinder V-shaped pressing block and the V-shaped support to clamp the metal rod and tube material, and then the pneumatic system controls two impact cylinders to drive the rod and tube material forging sleeve to simultaneously carry out the metal rod and tube material at both ends. Forging and pressing, and finally complete the cutting work of the rod and tube material.

The invention discloses a fatigue break feeding machine for fixed workpiece fatigue load circumferential cyclic loading. A loading frequency regulating and controlling mechanism comprises a main shaftand a rotating chuck connected with the main shaft; a fatigue load loading mechanism comprises a first servo motor and a lead screw which are arranged on the rotating chuck, the first servo motor drives the lead screw to rotate, a nut is vertically installed on the lead screw, and a feeding die is movably installed on the nut; a workpiece clamping mechanism comprises a feeding opening and a discharging opening, the locations of the feeding opening and the discharging opening are separately provided with clamping assemblies, second servo motors of the clamping assemblies drive two-way lead screws to rotate, and each two-way lead screw is provided with two clamping pieces. A fatigue break principle is used, so that multiple fatigue crack sources are generated at the prefabricated stress gaps of rod and tube materials to enable the crack to quickly extend, and quick feeding of the rod and tube materials is achieved; and sections are kept smooth, end portions are free of deformation, wherein the fatigue load loading mechanism controls the displacement of the lead screws by the servo motors, and radial real-time adjustment of displacement amount is achieved.

The invention discloses an automatic breaking device for an optical glass plate material, and belongs to the technical field of optical glass production. The automatic breaking device mainly solves the problems that the labor intensity is high, the glass fracture surface quality is difficult to control and an existing breaking device is easy to damage glass and a clamping device in manpower breaking. The device comprises a transport mechanism, a detection mechanism, a longitudinal moving mechanism, a scribing mechanism, a heating mechanism, a cooling mechanism and a pressing and breaking mechanism, wherein the transport mechanism comprises a roller conveying platform and a belt conveyor; the detection mechanism comprises an encoder and a first cylinder; the longitudinal moving mechanism comprises longitudinal linear guide rails, a first ball screw and a first servo motor; the scribing mechanism comprises a second ball screw, a second servo motor, transverse linear guide rails and a diamond scribing knife; the heating mechanism comprises a heating rod and a second cylinder; the cooling mechanism comprises a sponge body and a third cylinder; and the pressing and breaking mechanism comprises a stamping cylinder and a pressing block. According to the automatic breaking device, automatic breaking of the optical glass plate material can be realized according to a set length, the fracture surface quality is good, and the breaking length is accurate.

The invention discloses an opposite teeth extruding type fine-blanking die and a fine-blanking method using the die. Opposite tooth-shaped plates and convex-concave dies are arranged on the upper side of an axial combining surface of the die; teeth cavity dies and anti-jacking plates are arranged on the lower side of the axial combining surface of the die; the opposite tooth-shaped plates and the teeth cavity dies are respectively provided with protruded annular gears, the section of the annular gear is of triangle tooth shape, and the contact lines of the annular gears and a blank are respectively arranged outside a blank upper workpiece outline and surround the outline of the workpiece. When a workpiece is blanked, an upper annular gear and a lower annular gear are respectively pressed into the workpiece to prevent a blank material from flowing in the horizontal direction, and the previous-period extrusion is carried out on the blank material so as to form a strong three dimension compressive stress inside the blank material, reduce the area of a tensile stress generated by the blank material in the blanking process, avoid the cracks, and eliminate sharp edges and burrs of the workpiece. By the invention, fine-blanked workpieces with good quality and high precision can be manufactured by utilizing a universal blanking device so as to promote the development of fine-blanking industry.