51results about How to "Dimensional accuracy is easy to guarantee" patented technology

The present invention discloses a laser processing head and a multi-light source, multi-function and multi-axis processing apparatus comprising the same. The laser processing head includes a shell, an optical path system, a locating conical disk-shaped connecting mechanism, a laser range finder, a motor driving mechanism and a dust collection protection cover. The laser processing head has the advantages of a plurality of processing modes, flexibility in laser selection and easiness in replacement. The multi-light source, multi-function and multi-axis processing apparatus includes an apparatus control and operation system platform, a multi-axis linkage numerically-controlled machine tool and the laser processing head; the laser processing head is fixed on a high-precision multi-axis linkage machine tool through a blade handle type positioning cone device; and large-breadth and cross-scale laser fine processing only requires the switching of a laser light source, a laser optical path and the laser processing head, so that at least three kinds of large complex component fine surface processing application can be realized. The multi-light source, multi-function and multi-axis processing apparatus is especially for the aerospace field. The laser processing head and the multi-light source, multi-function and multi-axis processing apparatus comprising the same of the invention have the advantages of low manufacturing cost, wide application range, convenience in mass production and the like.

The invention discloses a rotary type magneto-rheological damper which is characterized in that the damper mainly comprises an outer shell, a front end cap, a back end cap, a front magnet exciting coil, a back magnet exciting coil, a rotor, a bearing, a sealing washer, seal rings and magnetic isolation rings. The front and back end caps are located at the two sides of the rotor and are respectively connected with the outer shell, forming a stator. The bearing and the sealing washer are respectively arranged between the rotor and the front and back end caps. The front and back magnet exciting coils are wound inside the front and back end caps. The magnetic isolation rings are respectively installed between the front and back end caps and the outer shell, and O-shaped seal rings are respectively arranged between the magnetic isolation rings and the outer shell as well as the front and back end caps. A sealed liquid charging hole is formed at the upper part of the outer shell, and magneto-rheological fluid is filled in a hollow cavity between the stator and the rotor. The front and back magnet exciting coils are wound in the same direction, with the tail ends being connected with each other in series and the head ends being loaded with power sources. The two magnet exciting coils form two parallel magnetic pathways which generate two magnetic fields in opposite direction, and the magnetic flux is generated by a single piece of magnet exciting coils.

The invention provides a forming process for special C-shaped channel steel and belongs to the technical field of steel material rolling and forming. The special forming process for C-shaped channel steel comprises the following steps of: conveying and feeding band steel, leveling, micro-pressing, locally heating, forming a dovetail-shaped edge, cooling, gradually rolling and forming, straightening and discharging. The special forming process has the advantages that: when narrow band steel is used for manufacturing the special C-shaped channel steel, the C-shaped channel steel with a dovetail groove edge can be obtained by adopting the processes of locally heating and gradually and continuously rolling and forming, and synchronous motion of a band steel conveying mechanism and a discharging mechanism can be realized. By adoption of the process for manufacturing the special C-shaped channel steel, energy is saved, production efficiency is high, and the produced C-shaped channel steel has high shape and size precision and high bearing capacity.

The invention discloses a high-voltage DC relay and an assembly method thereof. The high-voltage DC relay comprises two fixed contacts and a movable assembly, wherein the movable assembly comprises a movable spring part, a main spring and a push rod assembly, the push rod assembly comprises two independent parts of a push rod part and an U-shaped basket, the push rod part comprises a fixed piece and a push rod which are fixed together by insulation plastic, the two ends of the fixed piece are respectively fixed with the bottom of the side part of the U-shaped basket after the main spring, the movable spring part and the U-shaped basket are sequentially arranged at the top of the push rod part, so that the main spring is elastically tightened between the bottom surface of the movable spring part and the insulation plastic of the push rod part, and a movable spring piece props against the inner side of the top of the U-shaped basket. By dividing the push rod assembly into two independent parts, the high-voltage DC relay has the characteristics of simplicity in structure, convenience in forming and easiness in ensuring size accuracy; meanwhile, the two parts are easy to assemble, and automatic assembly of parts which are mutually matched is easily achieved; and moreover, the bonding resistant ability also can be enhanced.

The invention relates to the technical field of machining, and provides a cold heading manufacturing method for a connection bolt of an ignition switch. The method includes the steps that according to the wire diameter and the name needed during machining of the connection bolt, a material of a predetermined length is cut; cold heading is carried out on a semi-product of the connection bolt so that a head portion and a pole portion can be formed, and an arc face, a notch and a bottom end face of the head portion can be formed; the pole portion of the semi-product of the connection bolt is squeezed and threaded so that threads can be formed, and a finished product of the connection bolt is obtained. The invention further provides a connection bolt cold heading die based on the cold heading manufacturing method. Product quality problems are solved and production cost is reduced.

The invention discloses a rapid type pipeline connector. The rapid type pipeline connector comprises a pipeline connector, one or more rapid type connecting ports used for external connecting pipelines are formed in the pipeline connector, the inner wall of each rapid type connecting port is provided with a circle of connecting groove communicating to the end surface of the rapid type connecting port, and a sealing assembly is placed in each connecting groove. Each rapid type connecting port is sleeved with a rapid connecting assembly, and each rapid connecting assembly comprises a rapid connecting inner annular cover, an outer cylinder cover and a receding stopping sleeve, wherein the rapid connecting inner annular cover sleeves the corresponding connecting port and blocks the outside of the sealing assembly, the outer cylinder cover sleeves the corresponding rapid connecting inner annular cover and the corresponding connecting port, and the receding stopping sleeve is mounted in the corresponding outer cylinder cover and located at the outside of the corresponding rapid connecting annular cover. The external connecting pipelines can penetrate through the receding stopping sleeves and the rapid connecting inner annular covers to be inserted into the sealing assemblies in the connecting ports. According to the rapid type pipeline connector, rapid mounting and dismounting operation of the external connecting pipelines can be achieved, modularized connecting of multiple rapid connecting pipe fittings can be further achieved, and use is flexible and convenient.

A technology for machining the elliptical cam on hobbing-relieving-grinding machine-tool by copying method includes such steps as making a copying elliptical cam, installing it onto the mainshaft of said machine-tool, regulating the machine-tool for synchronous rotation between mainshaft and copying elliptical cam, clamping the blank of the elliptical cam to be machined onto said machine-tool, and turning on the machine-tool to machine said blank until it become a finished product.

A method for preparing fine-diameter cast iron section includes such steps as putting a casting mould in a vacuum system, vacuumizing, filling molten iron in the cavity of mould via sprue cup under the action of vacuum, and solidifying in vacuum state. Its advantages are high rate of finished products and precision, and high quality.

The invention provides a multifunctional fan blade hub. The multifunctional fan blade hub comprises a hub body and axial flow blades arranged on the outer circumferential surface of the hub body. The inner wall of the circumference of the hub body is provided with multiple centrifuge blades which are arranged evenly at intervals. The long edge of the axial side of each centrifuge blade is arranged on the inner wall of the circumference of the hub body. According to the multifunctional fan blade hub, the mode that an original hub is directly connected with a motor shaft through a single shaft is changed into the mode that the hub is directly connected with an armature through bosses, so that the connection stability is guaranteed, jumping between the hub and the armature is reduced, and the balancing performance is improved; when the multifunctional fan blade hub is applied to a matching fan, the ambient environment can be cooled, and a motor in the hub body can be effectively cooled through heat dissipation holes or cooling fins, so that the reliability of the fan is improved, and the service life of the fan is prolonged; the multifunctional fan blade hub is not provided with inserts and is integrally formed, so that the size precision of the blades is guaranteed more easily.

The invention provides a tool for bending an electrostatic ring lead of a transformer, belonging to technical field of transformer manufacture and comprising a contact roller, a support, a rotation disc, and a hold-down mechanism used for regulating the radial clearance between the contact roller and the rotation disc, wherein the rotation disc and the hold-down mechanism are respectively arrangedon the support, the contact roller is connected to the hold-down mechanism; the outside circumferential surface of the rotation disc is provided with a circumferential slot; the width of the circumferential slot adapts to the thickness of the electrostatic ring lead of the transformer; the contact roller is arranged outside the outside circumferential surface of the rotation disc; and the axial line of the contact roller is parallel to the axial line of the rotation disc. The invention changes manual manufacture into tool manufacture, thereby creating a brand-new method for producing an electrostatic ring, improving work efficiency reducing the technical content of operation, and being is easy to learn and operate; the appearance of a bent forming copper bus is smooth and attractive, andthe dimension precision is easy to guarantee; the appearance of the bent forming copper bus has no scratches or sharp angles, and the electric property is higher. The tool has small volume and can beflexibly moved.

The invention provides a channel steel forming process and belongs to the technical field of steel and iron material rolling and forming. The channel steel forming process comprises the steps of strip steel conveying and feeding, leveling, micro-pressing, local heating, dovetail edge forming, cooling, step-by-step rolling, straightening and discharging. The channel steel forming process has the advantages that channel steel with dovetail groove edges can be obtained and synchronous movement of a strip steel conveying and discharging mechanism can be achieved by adopting the processes of local heating and step-by-step continuous roll forming when ribbon steel is utilized to manufacture channel steel. By the adoption of the channel steel forming process for channel steel manufacture, energy sources are saved, the production efficiency is high, and the produced channel steel is high in shape and size accuracy and good in bearing capacity.

The invention provides an annular airbag display for a dust collector. The display comprises a shell, a movable indicating body arranged in the shell and a cover connected to the shell, wherein the shell is a round shell of which one end is open while the other end is closed; the center of the closed end is provided with a round convex column projecting inwards; the upper part of the shell is provided with a boss inserted into a display window; the lower part of the shell close to the closed end is provided with an air outlet; the four sides of the indicating body are depressed inwards to form a concave part of which the middle is provided with projecting positioning column; an annular airbag arranged on the round convex column of the shell is also provided; the other end of the annular airbag is inserted into the positioning column of the indicating body; and the middle of the cover is provided with an air inlet, which closes the shell by a disk part and is connected to the shell. The annular airbag is used as a resetting element of the indicating body, and gas with set pressure is filled in the airbag in advance, so the annular airbag display is opened under specific pressure. The size accuracy of the airbag is easy to be ensured and the processing technique is simple, so the indicating body acts correctly and the acting failure rate of the indicating body is lowered.

The invention provides a groove steel forming process and belongs to the technical field of steel and iron material rolling forming. The groove steel forming process comprises the steps of band steelconveying feeding, leveling, micro-pressing, local heating, dovetail edge forming, cooling, step-by-step rolling forming, straightening and discharging. The groove steel forming process has the advantages that when narrow band steel is utilized to manufacture groove steel, groove steel with a dovetail groove edge can be obtained through the process of local heating and step-by-step continuous rolling forming, and synchronous motion of band steel conveying and a discharging mechanism can be achieved. By adopting the groove steel forming process to manufacture the groove steel, energy sources are saved, the production efficiency is high, and the produced groove steel is high in shape and size precision and high in bearing capacity.