4results about How to "Increase chip removal space" patented technology

The present application relates to a kind of ceramic matrix composite micro deep hole complex frequency pulse chip removal enhanced processing method and system.The method makes tool simultaneously occur axial and radial ultrasonic vibration and axial low frequency pulsation when processing, wherein the amplitude of low frequency pulsation is greater than the amplitude of axial ultrasonic vibration.Tool has axial through hole for cooling liquid, when tool occurs low frequency pulsation upward movement, form transient low pressure in cutting zone, provide cooling liquid to cutting zone through tool and cooling liquid outside tool flows back to cutting zone.When tool occurs low frequency pulsation downward movement, stop providing cooling liquid to cutting zone, cutting zone forms transient high pressure, cooling liquid moves outward through the gap channel between tool and workpiece, while cooperating with ultrasonic radial vibration, periodically increase the width of gap channel, promote chip removal.The method greatly improves processing quality and tool life, while realizing efficient chip removal, achieves the purpose of high efficiency and high quality micro deep hole machining of ceramic material.

The utility model relates to the technical field of dental restoration, in particular to a small drill pin for dental restoration, which comprises a machine body, a pin body is mounted at the bottom end of the machine body, a first chip groove is arranged on the surface of the pin body, side edges are mounted on one side of the first chip groove, and a main edge is mounted between the side edges. A main cooling groove is formed in the inner wall of the needle body, and an auxiliary cooling groove is formed in the side face of the main cooling groove. According to the small drill pin for dental restoration, through the arrangement of the machine body, the pin body, the first chip removal groove, the side edge and the main edge, when the small drill pin is used, the machine body is connected with the pin body, the first chip removal groove formed in the pin body is used for discharging wider spiral chip removal grooves of tooth chips for grinding teeth, the chip removal space is increased, tooth chip blockage is prevented, and the tooth chips can be guided to be smoothly discharged; the side blades and the main blade are installed in a multi-blade spiral shape, and the number and the angle of the cutting blades are increased. By means of the design, cutting efficiency can be improved, sliding of the drill point on the surfaces of teeth is reduced, and meanwhile tooth scraps can be better guided to be discharged.

The application relates to the technical field of cutters, and discloses a ball end mill, which is characterized in that N peripheral cutting edges are arranged, a first edge gap and a second bottom end flank are arranged to form M bottom end cutting edges, and M is less than N, that is, the number of the bottom end cutting edges is less than the number of the peripheral cutting edges; the first edge gap is matched with a chip removal groove arranged on the bottom end cutting part to remove chips, the bottom end cutting part has a larger chip removal space, thereby avoiding chip accumulation and facilitating cutter heat dissipation; the first edge gap can reduce the manufacturing difficulty of the ball end mill; in addition, by limiting M to be less than N, the structural strength of the bottom end cutting part can be improved, the wear speed of the cutting edges is slowed down, the cutting performance of the ball end mill is improved, and the service life of the ball end mill is prolonged.

The invention relates to a ceramic matrix composite micro-deep hole multi-frequency pulsating chip removal enhanced machining method and system. According to the method, axial and radial ultrasonic vibration and axial low-frequency pulsation are simultaneously generated on a tool during machining, wherein the amplitude of the low-frequency pulsation is greater than that of the axial ultrasonic vibration. A through hole which is axially formed and allows cooling liquid to pass through is formed in the tool, when the tool moves upwards in a low-frequency pulsation mode, instantaneous low pressure is formed in a cutting area, the cooling liquid is provided for the cutting area through the tool, and the cooling liquid located on the outer side of the tool flows back to the cutting area. When the tool moves downwards in a low-frequency pulsation mode, the cooling liquid is stopped from being provided for the cutting area, instantaneous high pressure is formed in the cutting area, the cooling liquid moves towards the outside of a gap channel between the tool and a workpiece through the gap channel, meanwhile, the cooling liquid is matched with ultrasonic radial vibration, the width of the gap channel is periodically increased, and chip removal is promoted. According to the method, the machining quality is greatly improved, the service life of the tool is greatly prolonged, meanwhile, efficient chip removal is achieved, and the purpose of efficient and high-quality micro-deep hole machining of ceramic materials is achieved.