61results about How to "Avoid the knife" patented technology

The invention discloses a machining device and method for a double-layer casing of an aero-engine. The device comprises an end surface gland, a shell, an inner sleeve, movable tensioning blocks, an air bag, a supporting rod, supporting arm nuts, supporting arms, a connecting seat, a ball head guiding rod, an inner hole fixing claw, an outer stand column, a transverse top head and a pressing plate.A turning and milling compound machining method is adopted, when an inner hole and an end surface are turned, the mode that an outer supporting is matched with the air bag for tensioning is adopted,and when an outer boss is milled, the mode that an inner supporting is matched with the air bag for tensioning is adopted; and according to the machining device, the high-quality and high-efficiency machining of the similar thin-wall double-layer casing can be achieved, and it is ensured that the circular degree of the casing meets the requirement.

The invention provides a rough mill processing method of a fir tree blade root, and solves the problem that the existing rough mill processing method has low processing efficiency and high cost. The rough mill processing method comprises the following steps of: (1) establishing a processing coordinate system of a four-axis horizontal type numerical control milling machine, and processing a driving auxiliary surface; (2) calculating a processing path along contour of the blade root fir tree and the contour of a midbody, and milling a blade root processing step surface by using a bull nose circular knife end mill; (3) calculating the processing path of a deep groove in milling the contour of the fir tree, and processing the deep groove of the fir tree blade root on the basis of the blade root processing step surface by adopting a circular knife disc milling cutter; and (4) calculating a layered processing track of a forming tooth-type knife, and processing the teeth patterns of the fir tree blade root by using the forming tooth-type knife.

The invention discloses a butterfly valve of a water storage tank. An electromagnetic controller is mounted on a valve body, a butterfly plate with a permanent magnet is mounted in an inner cavity of the valve body; upper valve covers are respectively fixed to the upper end of the valve body, lower valve covers are respectively fixed to the lower end of the valve body, and the permanent magnet is fixed to the middle part of one end surface of the butterfly plate; an upper shaft sleeve and a lower shaft sleeve are coaxial, the upper shaft sleeve is fixed to the upper part of the end surface, on which the permanent magnet is positioned, of the butterfly plate, and the lower shaft sleeve is fixed to the lower part of the end surface, on which the permanent magnet is positioned, of the butterfly plate; the upper shaft sleeve is in matching connection with the upper valve covers through an upper valve rod, and the lower shaft sleeve is in matching connection with the lower valve covers through a lower valve rod; an inlet flow channel and two outlet flow channels are arranged on the other end surface of the butterfly plate; an inlet filter pipe is also connected to the inlet flow channel. According to the butterfly valve disclosed by the invention, the situation of leakage between the valve rods and fillings is avoided, besides, a gaseous cavitation preventing flow channel is processed on the surface of the butterfly plate, and one side of the butterfly plate is a spherical protrusion. The butterfly valve has the effects of shunting decompressing, reducing gaseous cavitation, preventing vibration and reducing noise, and the service life of the butterfly valve is prolonged. On the other hand, the inlet filter pipe has the effects of filtering water flows, and preventing valve cores from being destroyed.

The invention relates to a matching die cutting and half-and-half rotating pasting processing method for conductive adhesive. The matching die cutting and half-and-half rotating pasting processing method for the conductive adhesive includes the following steps of 1, typesetting and designing; 2, die cutting mode designing; 3, waste scheme designing; 4, product rotating pasting. After die cutting is performed on a single product, the half-and-half rotating pasting technology is adopted. The half-and-half rotating pasting technology comprises the steps that a row of products are pasted in a rotating mode, after material strips are cut, and the other half products are reposted; two strips of box sealing tape with the width of 5 mm are needed in product rotating pasting, a single PCS product is firstly fixed, dislocation or amount missing are prevented, then face paper on the conducting adhesive is removed, the original two rows of side-by-side products which are designed through the up-down and front-back rope winding are changed into products by rotating pasting in sequence and material strap cutting in sequence, therefore, the typesetting of a client is restored, and products the customer needed are manufactured. The matching die cutting and half-and-half rotating pasting processing method for the conductive adhesive improves the use efficiency of conducting resin materials, the waste materials in the manufacturing process are eliminated, the blade collapse is prevented, the normal production is guaranteed, and the production efficiency is improved; the conducting resin product rotating pasting is achieved, and the product typesetting is restored.

The invention discloses a one-way valve. The one-way valve comprises a valve rod, a valve body, a gate plate, a valve cover, a hand wheel and a check valve core assembly, wherein a water inlet and a water outlet are formed in the valve body, the check valve core assembly is arranged in a cavity body of the water inlet to form a check valve, at least one threading hole is formed in the valve cover, a threading hole is formed in the valve body, and a filter pipe is further connected to the outer end of the water inlet. According to the one-way valve, a gate valve and the check valve are integrated, so that the one-way valve has dual functions of two valves, and an original complex combined structure is simplified; the threading holes are formed in the valve cover and the valve body, and the valve cover and the valve body are stringed by threads, so that water is effectively prevented from being stolen by users; and furthermore, the one-way valve further has a filter function, so that the damage of the valve core is effectively prevented.

The invention relates to a milling inner profile expanding tool of a thin-wall variable-wall-thickness cylinder. Limiting blocks are arranged at the lower end of a mandrel in a sleeving manner and embedded between the upper surface of a base of the mandrel and an annular baffle of the mandrel, and an inner conical block is arranged on the mandrel in a sleeving manner. Outer arc blocks are arranged on the inner conical block in a sleeving manner, and the lower end faces of the outer arc blocks are arranged on the upper surfaces of the limiting blocks. A large outer hexagonal nut is arranged on the mandrel in a sleeving manner and attached to the upper end face of the inner conical block. A conduction disc is located on the upper surface of a locating disc at the lower end of the large outer hexagonal nut, and fixedly connected with the inner conical block through a screw. A sleeve is located above the mandrel, and an inner hexagon at the lower end of the sleeve and the large outer hexagonal nut match. The milling inner profile expanding tool is arranged in the spinning cylinder, and correction, rounding and clamping of the spinning cylinder can be achieved; the milling inner profile expanding tool has the beneficial effects that matching precision is high, tool errors are small, and product stress is even in the use process; the rigidity and machining precision of the cylinder are effectively improved; and the technical problems in thin-wall cylinder milling are solved.

The invention provides an electric wall outerskin remover with a steel wire roller. The electric wall outerskin remover comprises a belt pulley, a drive motor, a transmission belt, a steel wire roller, a bottom plate, a shell, an adjusting knob, a secondary handle, a switch, a grab handle, a blanking hopper, a dust inlet pipe, a dust collector and a dust collecting bag, wherein the belt pulley is fixed at the end part of the drive motor; the drive motor is arranged in the shell; the steel wire roller is connected with the belt pulley through the transmission belt; the bottom plate is arranged at the lower part of the shell; the adjusting knob is connected with the steel wire rope; and the secondary handle is arranged at the end part of the grab handle. Through arrangement of the steel wire roller, the adjusting knob and the transmission belt, the problem of knife collapse is effectively solved, the problems that a rigid cutter body is great in damage to a wall and easily generates a crack and peels off a wall body are solved; the problem that the outerskin on the uneven wall surface is difficult to remove is solved; the security of the drive motor is effectively protected; adjustment of the planning depth of the wall according to the actual requirements is facilitated; and market popularization and application are facilitated.

The invention provides a heavy type part spraying device. The heavy type part spraying device comprises a six-axis joint robot and a spraying gun (1), a pressure adjusting device is arranged on the spraying gun (1) and comprises a shell installed on the spraying gun (1), turbine blades (3) installed in the shell and capable of rotating relative to the shell and a motor connected with the turbine blades (3), and a paint channel used for conveying paint is arranged inside the spraying gun (1); the lower portions of the turbine blades (3) are located in the paint channel inside the spraying gun (1); a control system connected with the six-axis joint robot and used for controlling motion of the six-axis joint robot is connected to the motor; and a mixing device is connected to an inlet of the paint channel of the spraying gun (1). By means of the heavy type part spraying device, the rotating speed of the variable frequency motor (2) can be set according to the height of the tail end of the six-axis joint robot at present, the aim of adjusting the pressure of the paint in the spraying gun (1) according to the height is achieved, and the conditions of insufficient spraying and excessive spraying are avoided.

In a virtual plane (VS): the angle at which the cutting face (14) of a corner-rounded cutting edge (13) is inclined with respect to a reference plane (Pr) is defined as the radial direction rake angle(Delta), the angle at which a virtual line (VL) projected on the reference plane (Pr) is inclined with respect to the rotation center axis is defined as the radiation angle (Theta), and the point atwhich the virtual line (VL) with a radiation angle (Theta) of 5 degrees intersects the corner-rounded cutting edge (13) is defined as the reference point (RP); the twist angle of an outer circumferential cutting edge (9) has a positive value; the axial direction rake angle (Ar1) of the corner-rounded cutting edge (13) at a boundary point (Q) has a positive value; the axial direction rake angle (Ar2) of the corner-rounded cutting edge (13) at the reference point (RP) has a negative value; of the entire edge length of the corner-rounded cutting edge (13), the radial direction rake angle (Delta)at least in the region between the boundary point (Q) and the reference point (RP) has a negative value; and the radial direction rake angle (Delta) is smaller at the reference point (RP) than at theboundary point (Q).

The invention discloses cutting equipment and a knife-damaging-resistant device thereof. The knife-damaging-resistant device comprises an electricity conducting part, a power supply, a current sensing device and a hint device. The electricity conducting part is arranged below materials to be cut. After a knife cuts off the materials, a part exposed from the inner portion of the materials is in contact with the electricity conducting part. When the materials are not cut by the knife, the knife and the electricity conducting part are isolated by the materials. One electrode of the power supply is connected with the knife in a conducting mode. The other electrode of the power supply is connected with the electricity conducting part in a conducting mode. The current sensing device is used for sensing whether currents exist in a closed loop formed by the power supply, the electricity conducting part and the knife. The hint device is in communication connection with the current sensing device. When the current sensing device does not sense currents, the hint device gives out hint information. According to the cutting equipment and the knife-damaging-resistant device thereof, knife damaging problems can be effectively avoided, and compared with the fact that in the prior art, a photoelectricity sensing device is used as a knife-damaging-resistant device, working efficiency can be effectively improved.

The invention discloses a letter bending machine, and belongs to the technical field of stereoscopic luminous letter machining equipment. The letter bending machine comprises a rack, and a plate clamping device is arranged on the rack; a cutting device is arranged below the plate clamping device and comprises an installation base, a rotating disc is installed on the installation base in a rotating mode, a cutter bar is arranged on the rotating disc in a sliding mode, a cutter head is arranged on the cutter bar, and a linear driving device making the cutter bar move linearly is arranged between the rotating disc and the cutter bar; a stopping block used for limiting the rotating position of the cutter bar is arranged on the rack, and a limiting block corresponding to the stopping block in position is installed at one end, close to the cutter head, of the cutter bar. According to the letter bending machine, once electric control fails, the limiting block on the cutter bar will impact the stopping block to prevent the cutter bar from continuing rotation, and it is effectively avoided that cutter tipping happens on the cutter head rotating at high speed because the cutter bar does not rotate in place; safety performance of using the letter bending machine is improved through mechanical limiting.

The invention belongs to the technical field of laser cladding, and particularly relates to Fe-based alloy powder for hot-extrusion die laser cladding and application of the Fe-based alloy powder. TheFe-based alloy powder comprises following components including, by mass percent, 0.3%-0.5% of C, 0.8%-1.0% of Si, 0.2%-0.4% of Mn, 4%-6% of Cr, 1%-1.5% of Mo, 0.8%-1.1% of V, 5%-20% of WC, 0.5%-2% ofY2O3, and the balance Fe, and the sum of mass percents of all the components is 100%. Y2O3 and WC are added at the same time, WC particles can be melted and become small to enter a cladding layer structure, a new strengthening phase is generated, the integral hardness of the cladding layer is uniform, the cutting performance is improved, tool breakage is avoided, the surface of the prepared cladding layer is good in feature, performance is stable and hardness is high at the high temperature, the service life of a die can be prolonged, and cost is low.

The invention relates to the field of numerical control machining of parts, in particular to a five-axis corner characteristic efficient machining tool path generation method. The cutting state optimization of five-axis corner machining is realized by controlling the cutter shaft vector and the equivalent cutting width of the cutter during five-axis corner machining. Firstly, a cutter axis vector is calculated according to the corner side face, and then the tool path driving geometry of the five-axis corner is obtained according to tool geometric parameters, the corner depth and the axial cutting depth; the maximum equivalent cutting width of a current tool is determined according to the machining tool performance and the machining tool information, and a machining tool path with the five-axis corner characteristic in the groove cavity is generated through a cyclic machining strategy. The five-axis corner machining tool path can be suitable for machining of various five-axis corners with the side faces being planes or equivalent planes, and the machining quality of the corners can be effectively improved.

The invention belongs to the technical field of cutting tools, and particularly relates to a curved surface formed tool. The curved surface formed tool comprises a tool holder and a cutting part at the front end of the tool holder, the cutting part is shaped like a sphere and is provided with multiple screw-type cutting edges which are evenly distributed, screw flutes are formed between the adjacent cutting edges, the multiple cutting edges are collected at the front end of the cutting part, the corresponding edge thicknesses of the cutting edges are gradually increased from front to back, the portion, at the rear end of the cutting part, of each cutting edge is provided with a first forming cutting edge which is of an inward arc-shaped sunk structure, each cutting edge is further provided with a second forming cutting edge which is shaped like an inward semicircle, the rear portion of each cutting edge is provided with an arc-shaped groove which is right opposite to another cutting edge, each arc-shaped groove is internally provided with an arc-shaped nozzle, each arc-shaped nozzle is communicated with a cutting fluid pore passage formed in the axis of the tool holder, the special type curved surface can be formed in one time, the precision is high, and the efficiency is high.

The invention discloses a gradually-cutting inner hole cutter and a machining method. The gradually-cutting inner hole cutter comprises a cutter head and a cutter bar. The cutter head comprises a main cutting edge, an auxiliary cutting edge, a front cutter face, a main rear face and an auxiliary rear face. The main cutting edge and the auxiliary cutting edge are each a section of arc line; the intersection of the main cutting edge and the auxiliary cutting edge is a section of arc line for smooth connection, and inflection points are absent at the intersection between the main cutting edge and the auxiliary cutting edge; and an included angle which is an acute angle is formed between the front cutter face 1c and the direction of main cutting force. The gradually-cutting inner hole cutter and the machining method have the advantages that impact on a traditional cutter due to interrupted cutting is reduced; impact on the traditional cutter due to gaps of a transmission mechanism of a machine tool is reduced, pushing force of the traditional cutter due to impact cutting is changed to pulling force caused by gradually cutting, and cutter back-off during cutting of a traditional turning tool is avoided; and instantaneous displacement of the cutter bar due to cutting impact is reduced, cutting tends to be stable, phenomena of breaking edges and blade jamming are avoided, damage to the traditional cutter due to impact cutting is reduced, the machining accuracy is greatly improved, and rejected products caused by the phenomena of breaking edges, blade jamming and the like are avoided.

The invention relates to the technical fields of cutting tools, particularly to a deep hole forming tool. The deep hole forming tool comprises a tool shank and a cutting module at the front end of the tool shank, wherein the cutting module is composed of a third cutting unit connected with the tool shank, a second cutting unit at the front end of the third cutting unit, and a first cutting unit at the front end of the second cutting unit; the third cutting unit and the second cutting unit are in a ball shape and are connected through a transitional smooth curved surface; the first cutting unit is composed of a taper unit connected with the second cutting unit, and a ball unit at the front end of the taper unit, and the small-diameter end of the taper unit is smoothly connected with the second cutting unit; the cutting module is provided with at least three screw cutting edges uniformly distributed in the circumferential direction of the cutting module, and the screw cutting edges are correspondingly provided with screw flutes and converge in the center of the front end of the first cutting unit. According to the deep hole forming tool, during a cutting process, the contact area between the cutting module and hole walls can be small, so that the possibility of tool tipping due to radial movement can be greatly reduced.

The invention discloses a wedge gate valve. The wedge gate valve comprises a valve body, a valve base, a wedge gate plate, a valve cover and a valve rod. The stuffing box part of the valve cover is welded to the valve cover through a lining, and an upper sealing base is connected to the lining through threads. The wedge gate valve is reasonable in structure, and the upper sealing base is convenient to replace and good in sealing performance; furthermore, the wedge gate valve has the filtering function, and a valve element is not damaged easily.

The invention discloses a diversion valve which comprises a valve body (3); the valve body (3) is provided with a three-way inner cavity comprising an upper inner cavity, a left inner cavity and a right inner cavity; a turnover plate (1) positioned between the left inner cavity and the right inner cavity and positioned under the upper inner cavity is arranged in the inner cavity, the lower end of the turnover plate (1) is hinged to the bottom wall of the valve body (3) through a turnover plate shaft (2), and a ferrule I (4) and a ferrule II (5) are respectively arranged on the two sides of the upper end of the turnover plate (1); a hole I (7) and a hole II (8) for allowing a glass rope to thread through are respectively formed in the two sides of the valve body (3); the ferrule I (4) is connected with the glass rope in the hole I (7); the ferrule II (5) is connected with the glass rope in the hole II (8); the upper inner cavity is connected with an inlet; the inlet is connected with a filtering pipe and a connecting port of which the internal diameter is larger than the external diameter of the filtering pipe. The diversion valve disclosed by the invention is simple in structure, convenient to operate and low in cost and has a filtering function, and the valve body is not easy to damage.

A drill tip that is attached to the distal end of a drill bit and that performs drilling, the drill tip having a tip main body (1) provided with a proximal-end part embedded in a bit body of the drill bit and a distal-end part that tapers toward the distal-end side and protrudes from the surface of the drill bit. The surface of at least the distal-end part of the tip main body (1) is formed from a polycrystalline cubic boron nitride sintered compact (4) containing 70 to 95 vol% of cubic boron nitride sintered by a catalyst metal that contains Al and at least one of Co, Ni, Mn, and Fe.