6results about How to "Improve processing rigidity" patented technology

A screw rod shaft (12) is connected to a bearing seat (11) and a sleeve cylinder body (2) in a penetrating mode from back to front, a lever (4) is hinged to the middle of a body shell (1) on the lower side of the sleeve cylinder body (2), and a first supporting block (5) and a second supporting block (6) are installed at the front end of the sleeve cylinder body (2) and the front end of the lever (4) respectively. The included angle smaller than 90 degrees is formed by the supporting working faces of the first supporting block (5) and the second supporting block (6), openings face the cutting force direction, radial cutting force borne by the slender shaft workpiece in the machining process is counteracted, stress deformation of the slender shaft workpiece is eliminated, the workpiece is supported, concession of the workpiece under the action of the cutting force is prevented, machining rigidity, stability and machining efficiency can be improved, and the machining quality is improved. The grinding machining precision of the equidistant arc surface slender shaft workpiece is effectively improved, and it is ensured that the dial indicator jumps within 0.005 mm before and after clamping. The device can adapt to machining of slender shafts with the high precision requirement, can be used for machining technologies such as turning, turn milling and grinding of the slender shafts with the equidistant arc surfaces, and has good universality and popularization value.

According to the small-aperture intermittent deep hole machining technology, machining is conducted through a small-aperture intermittent deep hole machining tool set, and the small-aperture intermittent deep hole machining tool set comprises a first tool, a second tool, a third tool, a fourth tool and a fifth tool. When the first multi-blade supporting shaft and the second multi-blade supporting shaft are used for machining, the multi-blade supporting structure plays a supporting and guiding role in a front section hole, the overall machining rigidity and stability are enhanced, cutter breakage is avoided, the whole cutter composition cost is low, and machining of small-aperture intermittent deep holes can be efficiently and reliably completed.

This invention discloses a gas turbine cylinder block machining positioning device, belonging to the field of machining clamping technology. The gas turbine cylinder block includes an outer cylinder, an inner cylinder, a star-shaped support, and a support ring. Multiple height-adjustable support mechanisms include support seats and movable supports. The movable supports are provided with normal positioning parts and tangential positioning parts. The top protection mechanism includes a guide plate, a first variable diameter plate, multiple sector plates, and multiple second positioning parts that can move synchronously radially. The guide plate is provided with multiple first straight grooves and second straight grooves. The first variable diameter plate is provided with multiple first arc-shaped grooves and connected to a second drive assembly. The multiple sector plates are stacked, and the sector plates are provided with first pins that cooperate with the first straight grooves and first arc-shaped grooves and second pins that cooperate with the second straight grooves. This invention uses height-adjustable support mechanisms to position the outer cylinder, resist shear force and axial force, and ensure support rigidity. It also cooperates with the top protection mechanism to make the axes of the support ring, outer cylinder, and inner cylinder collinear.

The utility model relates to the technical field of machining, in particular to a cutter for machining deep groove surfaces and grooves, which comprises a cutter handle and a cutter bar. The cutter handle comprises a main body part and a lengthened handle formed at one end of the main body part, and a clamp avoiding part and a hole wall avoiding part are formed on the end face of the lengthened handle; according to the cutter, the rigidity can be kept to be maximized by means of the design of the lengthened handle, meanwhile, the interference avoiding requirement during face and groove machining is met through the design of the clamp avoiding part and the hole wall avoiding part, the actual machining clamp and equipment conditions are better met, the machining rigidity of the whole cutter is improved, and the machining efficiency is improved. And the problems of rough machining surface, cracks and the like caused by cutter vibration during machining are avoided.

This invention relates to the field of composite machining equipment technology, and discloses a CNC milling composite machining equipment for machining ring grooves in hardware. The equipment includes a machine tool, a milling section located on the rear side of the machine tool, and a center support base mounted on the inner wall of the machine tool bottom, in front of the milling section. A gantry slide seat one and a gantry slide seat two are slidably mounted on the right side of the center support base from left to right. This CNC milling composite machining equipment for machining ring grooves in hardware effectively solves the problems in the prior art. When performing composite machining on flange gear shafts, the flange extends from the shaft end to form a cantilever structure. During milling the end face groove, the cutting force is perpendicular to the flange end face, causing bending vibration of the flange. Furthermore, during milling the annular groove, the cutting force is axial, leading to axial movement of the part and causing the depth accuracy of the annular groove to exceed tolerances. Simultaneously, the vibration generated during machining causes wavy grooves on the bottom of the groove and exacerbates tool wear.

The invention provides a lead screw pre-stretching machine tool. The lead screw pre-stretching machine tool comprises a tool body, a first fixing device, a stretching device and a lead screw. The first fixing device is fixedly arranged on the upper side face of the lathe bed. The stretching device is movably arranged on the upper side face of the lathe bed. One end of the screw rod is fixedly arranged on the fixing device, and the other end of the screw rod is cooperatively mounted on the stretching device; wherein the movement track of the stretching device in the direction away from the position where the first fixing device is located is defined as a first track; when the lead screw pre-stretching machine tool executes the pre-stretching action, the stretching device provides thrust in the first track direction for the connecting end of the lead screw, so that the lead screw is pre-stretched. The technical problems that when a tip abuts against the two ends of a lead screw optical axis, the two ends of the lead screw optical axis are subjected to extrusion force from the tip, a lead screw is prone to being bent towards the middle, the rigidity of the lead screw is reduced in the machining process, and the machining precision of the lead screw is further reduced are solved.