51results about How to "Milling speed is fast" patented technology

The invention relates to a milling tool intended for chip-removing machining, comprising a basic body rotatable around a geometrical centre axis and a plurality of peripherically spaced-apart, detachable cutting inserts, which separately are securable in insert pockets adjacent to chip channels formed in the basic body, the individual cutting insert having at least one edge (19) formed between a chip surface on the top side of the cutting insert and a clearance surface along the periphery side of the cutting insert, the tool geometry being markedly positive so far that the individual insert pocket is arranged to secure the individual cutting insert in a position in which the chip surface is inclined in relation to the centre axis while forming a positive angle of inclination. Characteristic of the invention is the combination that the angle of inclination between the chip surface (17b) and the centre axis is within the range of 25-28 DEG , that the cutting edge (19) cross section- wise has an arc-shape having a radius of curvature (ER) within the range of 5-20 mu m, that the clearance surface of the cutting insert is formed with a clearance bevel (18a), which extends from the cutting edge (19) in the direction of the bottom side of the cutting insert and transforms into a main clearance portion (18b), that the clearance angle (Gamma) of the clearance bevel (18a) is larger than 0 DEG , but smaller than 3 DEG , that the clearance angle (Omega) of the main clearance portion (18b) is larger than the clearance angle (Gamma) of the clearance bevel (18a), that the extension of the clearance bevel (18a) from the cutting edge (19) to the main clearance portion (18b) is within the range of 0,05-0,30 mm, that the chip surface is formed with a reinforcement bevel (17a), which extends from the cutting edge (19) in the direction of the centre of the cutting insert and transforms into a main chip portion (17b).

The invention belongs to the technical field of machining and discloses a method for milling and vibration-damping a blisk. The method comprises the following specific process steps of: (1) preparing a filling material according to the proportion; (2) melting the filling material; (3) mounting a pouring clamp; (4) pouring a filling agent; (5) condensing the filling agent at normal temperature, secondarily condensing the filling agent and checking the condensing state of the filling agent; (6) mounting a filtering clamp; and (7) carrying out the abutted milling processing and chip removal processing. By pouring the filling agent between the blisk and vanes in the milling processing of vane profile five coordinates of the blisk, the method enhances the rigidity of parts in the milling processing of the vanes, eliminates the chatter marks generated at the vent tip part of the vanes during milling and reduces the roughness of the surfaces of the vanes. Meanwhile, the rigidities of the parts and a clamping system thereof are enhanced, so that the milling feed rate is increased and the milling speed can be improved.

The invention relates to a method and a device for preparing single-phase nano epsilon-Fe3N or gamma'-Fe4N powder, and the device consists of a plasma evaporation powder making system, a powder collecting and modifying system, a vacuum system and a circulating system. The process steps for preparing the single-phase nano epsilon-Fe3N or gamma'-Fe4N powder are as follows: carrying out vacuum pumping and forced gas circulation, then carrying out plasma evaporation powder making, further carrying out powder modification, controlling the volume flow ratio of ammonia to hydrogen to be (1.4-1.6): 1, controlling the temperature in a powder trapping room at 345-355 DEG C, keeping the temperature for 5-7h, and obtaining the nano single-phase gamma'-Fe4N powder; and controlling the volume flow ratio of the ammonia to the hydrogen to be (2.4-2.6): 1, controlling the temperature in the powder trapping room at 445-455 DEG C, keeping the temperature for 1-3h and obtaining the nano single-phase epsilon-Fe3N powder. The method and the device can ensure that the product is the high-purity single-phase nano iron nitride powder through the precise control of reaction atmosphere.

The invention discloses an automatic edge milling machine for an aluminum alloy template, which includes a frame, a feeding device, an introduction mechanism, a length-adjusting mechanism, a guiding and positioning mechanism, a pre-tightening mechanism, an edge milling mechanism and an electric control system. The feeding device is arranged on the machine. The upper part of the frame includes a support plate, a feeding belt, a driving shaft, a driven shaft and a driving mechanism. The driving shaft and the driven shaft are relatively arranged on the frame and connected by a feeding belt. The length-adjusting and distance-adjusting mechanism includes two adjustable workbenches, which are adjustable and fixedly connected with the frame, and the rear sides of the adjustable workbenches are equipped with pre-tightening mechanisms. The guide positioning mechanism includes two guide plates symmetrically arranged, and two sets of side guide wheels are respectively arranged on opposite sides of the two guide plates. There are two edge milling mechanisms, which are symmetrically arranged on two adjustable workbenches. The invention realizes automatic continuous feeding, automatic guiding and alignment, one-time multi-edge cutting, high cutting speed, high processing precision, low production cost and high production efficiency.

The invention relates to the technical field of a clamping and fixing device and discloses a clamping and fixing device for a milling shifting fork. The device comprises a rack, wherein a positioningcolumn for pre-positioning a workpiece is fixedly arranged on the rack, a first hinge swing rod and a second hinge swing rod are further hinged to the rack, the first hinge swing rod and the second hinge swing rod are located on one side of the positioning column, the first hinge swing rod and the second hinge swing rod are arranged in a mirror symmetry mode relative to the positioning column, a left clamping jaw and a right clamping jaw are fixedly arranged on the first hinge swing rod, the left clamping jaw, the right clamping jaw and the first hinge swing rod are distributed in a Y shape, and a driving mechanism used for driving the first hinge swing rod and the second hinge swing rod to swing is further arranged on the rack. The device can solve a technical problem that in the prior art, working efficiency of shifting fork milling is low.