30results about How to "Good surface roughness" patented technology

A ball end mill exhibiting extremely excellent practicality in which machining surface roughness can be improved while prolonging the lifetime. On the outer circumference of a tool body (11), a plurality of spiral chip discharge grooves (12) are formed from the distal end toward the proximal end of the tool, and a ball blade (15) is provided at the intersection ridge line of the face of the chip discharge groove (12) and the flank (14) at the distal end of the tool body (11). In such a ball end mill, two or more ball blades (15) are provided at the tip of the ball end mill, and one groove (20) having a substantially V-shaped or U-shaped cross-section and extending outward from the center (O') of rotation of the tool is provided between respective ball blades (15) at the distal end of the tool.

The invention discloses a net-shaped taper sleeve self-compensating centrifugal expansion high-speed cutter handle. The handle body of the cutter handle is of an integral solid structure consisting of a front end handle body and a rear end handle body; the front end handle body and the rear end handle body are coaxial cylinders; the diameter of the front end handle body is smaller than that of the rear end handle body; a circle of groove is formed in the end surface of the rear end handle body around the connection part of the front end handle body, and a disc spring is arranged in the groove; a threaded groove is formed from the end surface of the front end handle body toward the rear handle handle body along the axis; a shaft shoulder is machined on the front end of the front end handle body and a fine pitch thread and a threaded tool withdrawal groove are formed in the front end handle body; a net-shaped taper sleeve sleeves the outer wall of the front end handle body; a fine pitch lock nut is arranged on the fine pitch thread of the front end handle body in front of the net-shaped taper sleeve; the front end and the rear end of the net-shaped taper sleeve are in contact with the fine pitch thread and the disc spring; a cylindrical clamping groove is formed in the end surface of the rear end handle body along the axis toward the inside; and a V-shaped tool changing groove is formed in the outer wall of the rear end handle body. The net-shaped taper sleeve self-compensating centrifugal expansion high-speed cutter handle has the advantages that the limiting speed is high; the dynamic balance performance is good; the rigid and the position precision are high; the strength is high; and the like.

The invention discloses an omni-directional intelligent vibration damping cutting tool of a numerically-controlled machine tool. The omni-directional intelligent vibration damping cutting tool comprises a tool shank and a tool bit. One end of the tool shank is used for being connected with a tool rest. The other need of the tool shank is used for being connected with the tool bit. The side face of the tool shank is provided with piezoelectric film sensors used for detecting vibration and deformation of the tool shank. The side face of the tool shank is also provided with piezoelectric film drivers used for driving the tool shank to conduct reverse vibration and deformation according to detection signals of the piezoelectric film sensors. The piezoelectric film sensors and the piezoelectric film drivers are arranged oppositely. The omni-directional intelligent vibration damping cutting tool also comprises a controller which is in communication connection with the piezoelectric film sensors and the piezoelectric film drivers. Generated noise is low. The structure of the omni-directional intelligent vibration damping cutting tool cannot be damaged. The strength of the omni-directional intelligent vibration damping cutting tool is guaranteed. The machining precision, the machined surface roughness and the adaptability are improved, and the response frequency bandwidth and the reaction speed of vibration control are increased. The invention further discloses the numerically-controlled machine tool comprising the omni-directional intelligent vibration damping cutting tool.

The invention provides a cutting processing method of an aramid fiber composite material, which firstly cuts the aramid fiber by using a cutter, and then cuts off the aramid fiber composite material to be removed. Said tool consists of two identical round solid carbide cutting blades and a high-speed steel disc milling cutter, alternatively, said tool comprises a blade, a shank and an attachment hole for attachment to a tool holder, The blade is in the shape of a strip in the feeding direction of the tool, and several cutting units are arranged in two rows along a straight line on the blade. Adopting the present invention, its cutting quality and cutting efficiency are obviously superior to the existing cutting processing method of aramid fiber composite material, the cutting processing efficiency is at least 2 times higher than the original one, and the processing quality is at least 1 grade higher than the original one.

The invention relates to a carbon dioxide laser machining method of PCBN. The surface of a material is cut by utilizing laser, and the generated temperature gradient in the cutting process results inphase change of cubic boron nitride to hexagonal boron nitride, so that great thermal stress and internal stress are caused, and the material produces cracks and propagating cracks in the kerf direction. The machining method is totally different from the traditional laser machining principle; the PCBN laser cutting efficiency is improved effectively; and the forming areas of a heat-affected zone and a recasting layer of the material are reduced, and the roughness of the machined surface is improved.

The invention discloses a compound processing method based on laser discretization, high-efficiency milling and laser milling. The method includes: a laser discretization process, forming a prefabricated micro-texture on the surface of a workpiece by laser processing, so as to discretize the surface of the workpiece; The high-efficiency milling and grinding process uses milling equipment to rough-machine the workpiece after the laser discretization process; the laser milling process uses laser to perform fine milling on the workpiece after the high-efficiency milling and grinding process. The invention combines laser discretization, high-efficiency milling and laser milling technology, can improve the machinability of difficult-to-machine materials, realize high-efficiency and high-removal rate processing, improve the surface roughness of processing, and can process in different regions according to the characteristics of the workpiece; through multiple The combined process of technology greatly improves the processing efficiency, processing accuracy and processing quality.

The invention relates to the technical field of free-cutting steel, in particular to a low-carbon selenium-containing free-cutting steel for instruments and meters and a manufacturing method thereof. It consists of the following chemical components in weight percentage: C: 0.01% to 0.10%, Si: 0.01% to 0.10%, Mn: 0.50% to 1.50%, P: 0.01% to 0.10%, S: 0.25% to 0.35% %, Se: 0.18% to 0.30%, O: 0.0040% to 0.0060%, the ratio of selenium to sulfur Se / S is 0.2 to 2, the ratio of oxygen to selenium to O / Se is 0.016 to 0.17, and the balance is iron and unavoidable impurities. The present invention reduces cutting resistance and cutting heat in the cutting process through a certain ratio of manganese and selenium and a certain combination of selenium and sulfur, protects the cutting tool, lubricates the cutting tool at the same time, and obtains good machining surface roughness.