31results about How to "Avoid cracks or even breakage" patented technology

The invention provides a laser sintering device and sintering method. The laser sintering device comprises a first laser head used for outputting a laser of first power, a second laser head used for outputting a laser of second power and a drive device used for driving the first drive head and the second drive head to move, and the first laser head and the second laser head are made to heat the same area of a material to be sintered. When the two laser heads are used for heating the to-be-sintered material arranged on a to-be-sintered device, the two laser heads are made to heat a certain to-be-heated area of the to-be-sintered material, therefore, the to-be-sintered material is preheated before laser sintering, or annealing treatment is carried out on the to-be-sintered material after laser sintering, therefore, the difference of the temperature obtained before laser sintering and the temperature in the laser sintering process is reduced, or the reducing speed of the temperature obtained after laser sintering is reduced, so that the stress of a substrate of the to-be-sintered material is reduced, and the situation that cracks or even damage is caused by shrinkage stress is avoided.

The invention relates to a composite gas compressor fan blade with an integrated metal coating. The composite gas compressor fan blade is characterized by comprising a composite base layer and a metal coating, wherein the composite base layer and the metal coating are integrally formed by mould pressing; the metal coating coats the composite base layer, and the coated flange part is adhered by adopting an adhesive and set by mould pressing. The blade has very high specific strength and excellent impact resistance and erosion resistance, and can effectively avoid cracking and even breakage caused by de-mixing and surge; and the blade forming method integrates preparation of an intermediate composite material and formation of the whole blade, so that the manufacturing cost and time are greatly reduced, and the method has the advantages of high forming precision, high automation degree, long service life of the mold and the like.

The invention discloses a rice cooking control method for an electric rice cooker, which comprises the following cooking stages: a water absorption stage, a heating stage, a heating stage, a boiling stage and a rice stewing stage; When the amylose content is set and the protein content is greater than the preset protein content, the water absorption stage includes: controlling the heating body of the electric rice cooker to heat with the first preset heating power; when the temperature reaches the first preset temperature, The temperature of the electric rice cooker is maintained at the first preset temperature for a first preset time period. The invention also discloses an electric rice cooker. The invention enables the indica rice whose amylose content is greater than the preset amylose content and whose protein content is greater than the preset protein content to fully absorb water at a reasonable temperature within the first preset time length, thereby improving the water absorption efficiency of the indica rice, and further Improves the taste of rice.

The invention relates to a composite gas compressor fan blade with an integrated metal coating. The composite gas compressor fan blade is characterized by comprising a composite base layer and a metal coating, wherein the composite base layer and the metal coating are integrally formed by mould pressing; the metal coating coats the composite base layer, and the coated flange part is adhered by adopting an adhesive and set by mould pressing. The blade has very high specific strength and excellent impact resistance and erosion resistance, and can effectively avoid cracking and even breakage caused by de-mixing and surge; and the blade forming method integrates preparation of an intermediate composite material and formation of the whole blade, so that the manufacturing cost and time are greatly reduced, and the method has the advantages of high forming precision, high automation degree, long service life of the mold and the like.

The invention discloses a rotary cutting mechanism with efficient and continuous rotary cutting function. In the rotary cutting process, a first lifting driving device drives a first lifting frame toascend and descend along a first guiding frame until the center of a first positioning and cutting knife and the center of the round wood are approximately located at the same height, a user operatesa first operation handle to push a first sleeve main body to move towards the round wood along threads, the first sleeve main body applies the inward pressure on a first positioning arm through a first abutting sleeve, the first positioning arm performs clamping through a first abutting gripper, finally, all the abutting grippers of the three positioning arms can carry out omni-directional clamping on the round wood, a first advancing and retreating motor drives a first advancing and retreating worm wheel to rotate through a first advancing and retracting worm, the first advancing and retreating worm wheel drives a first shaft main body to slide towards the round wood through a first advancing and retreating screw, a first blade is in abutting contact with the round wood, and performs rotary cutting on the round wood to form a groove corresponding to a first conical head, a groove part, formed by rotary cutting, of a first end cover performs automatic abutting contact, so that the effect of automatic centering is achieved.

The invention provides an insertion and connection terminal box and a high-precision manufacturing method of the insertion and connection terminal box to solve the problem that according to an existing terminal box production process, the coplanarity precision requirement is difficult to meet and the widths of protruding ribs are difficult to control. The insertion and connection terminal box comprises a box body which is of a vertically overlapped structure, wherein one lateral side of the box body is a bent edge, the other lateral side of the box body is an overlapping edge, the box body is provided with two protruding rib structures which are horizontally symmetrical, the left side of the box body and the right side of the box body are provided with a plurality of coplanarity measurement points, and the coplanarity of the box body is controlled within 0.035. The high-precision manufacturing method of the insertion and connection terminal box includes the steps of firstly, punching positioning holes; secondly, shearing a knife edge on one side of each protruding rib, and cutting off, supplementing and correcting the knife edge; thirdly, conducting the band tearing and folding process; fourthly, conducting the 45-degree pre-folding process; fifthly, conducting the 90-degree pre-folding process; sixthly, conducting the 135-degree pre-folding process; seventhly, conducting the flattening forming process; eighthly, conducting the adjusting process, wherein the fourth step, the fifth step and the sixth step are executed step by step. According to the insertion and connection terminal box and the high-precision manufacturing method, by improving a punching die and adding the supplementing, correcting and cutting-off process and the multi-stage pre-folding process, product accuracy and product quality are improved.

The invention discloses a washing machine and a detergent drawer control method thereof. The washing machine comprises a drawer support (1). A detergent drawer (2) capable of being pulled in a sliding mode is installed in a sliding groove of the drawer support, magnets are installed at the front end and / or the rear end of the detergent drawer in the sliding pulling direction of the detergent drawer, and an electromagnet (5) are fixedly installed on the drawer support. In the washing machine, in a power-on state, the electromagnet can achieve automatic opening or closing of the detergent drawer through magnetic force between the electromagnet and the magnets installed at the front end / or the rear end of the detergent drawer, the situation that the opening and closing structure of the detergent drawer is cracked or even broken due to mechanical fatigue after being used multiple times can be effectively avoided, therefore, the probability that the detergent drawer fails due to the fact that the detergent drawer cannot be opened or closed is reduced, and the use experience of a user on the washing machine is improved.

The invention provides a laser sintering device and a sintering method. The laser sintering equipment includes: a first laser head, used to output a laser with a first power; a second laser head, used to output a laser with a second power; a driving device, used to drive the first laser head and the second laser head to move , so that the first laser head and the second laser head respectively heat the same area on the material to be sintered. The present invention utilizes two laser heads to heat the material to be sintered arranged on the device to be sintered, so that the two laser heads respectively heat a certain region of the material to be sintered to be heated respectively, so that the material to be sintered before laser sintering Preheating, or annealing the material to be sintered after laser sintering, so as to reduce the temperature difference before laser sintering compared with laser sintering or reduce the temperature drop rate after laser sintering, so as to reduce the stress of the substrate of the material to be sintered , to avoid cracks or even breakage caused by shrinkage stress.

The invention discloses a pressing plate for a scraper conveyor. The pressing plate comprises an arbor, and a wear resisting layer wrapped on the outer surface of the arbor for forming a pressing plate body; a bonding layer is arranged between the arbor and the wear resisting layer; positioning through holes are spaced in the arbor; a transverse gap is formed in the wear resisting layer above the arbor; and the wear resisting layer parts on two sides of the transverse gap are upwards projected to form a limiting table. The arbor serves as a support skeleton of the pressing plate, so that the strength and the toughness of the pressing plate satisfy the working demands; the wear resisting layer serves as a main body of the pressing plate, so that the pressing plate has needed strength for normal work, meanwhile, the wear resistance is greatly improved, the weight is obviously lowered compared with metal, the weight of the pressing plate is reduced, the total weight of a scraper chain is reduced, the idle loss of the scrape conveyor is reduced, the energy saving target is realized, meanwhile, the phenomenon of crack or even rupture caused by residual stress of heat treatment is prevented, and the overall life is largely prolonged.

The invention discloses an engineering pipe pile foundation, and belongs to the field of building construction. According to the technical scheme, the foundation comprises a fixed net, a fixed devicefixedly arranged in the fixed net, a prefabricated pile fixed into the fixed device and a stress device arranged on the prefabricated pile. The fixed net is composed of a frame and cross beams, the cross beams have the longitudinal cross beam and the transverse cross beam, the longitudinal cross beam and the transverse cross beam are crossed, the stress device comprises a stress cylinder arrangedat the upper end of the prefabricated pile in a sleeving manner and a ring fixed to the lower end of the stress cylinder, the inner ring of the ring is attached to the outer surface of the prefabricated pile, and multiple guide piles are evenly fixed to the lower surface of the ring. The problem that the pipe pile foundation is prone to knowing down is solved, and the effect of preventing the pipepile foundation from toppling and breaking is achieved.

The invention puts forwards an automatic precision rotary cutting machine. Before a rotary cutting device begins to perform rotary cutting, a first lifting driving device slides away from a second clamping part along a first horizontal guiding rail, a first lower telescopic supporting rod and a second lower telescopic supporting rod slide to make contact with a log in an abutting manner, the log is supported to abut against an upper driving wheel single body, a first advancing and retreating motor drives a first rotating shaft to move away from a second clamping part, a first lifting frame moves to the height, corresponding to the circle center of the log, of a first cutter, a worker rotates a first operating handle for adjustment, the first clamping arm clamps the log, a controller controls driving of a first lifting motor, the pressure applied by a first main base plate to the first lifting frame before the log is clamped is equal to the pressure after the log is clamped, the first lifting driving device slides towards the second clamping part along the first horizontal guiding rail, the first rotating shaft moves towards the second clamping part, and the first cutter is automatically aligned to the log.

The invention relates to a radial type air conditioner indoor unit. The radial type air conditioner indoor unit comprises a shell, a micro-channel heat exchanger and a hoisting device. A containing space is formed in the shell in a limited manner. The micro-channel heat exchanger is arranged in the containing space and provided with an upper flow collecting pipe, a lower flow collecting pipe and multiple heat exchange pipes located between the upper flow collecting pipe and the lower flow collecting pipe. The hoisting device is configured in a manner that the micro-channel heat exchanger is hoisted onto the shell through the hoisting device, the upper portion of the micro-channel heat exchanger is fixed relative to the shell, and the lower portion of the micro-channel heat exchanger is movable relative to the position, in the vertical direction, of the shell. In this way, the lower portion of the micro-channel heat exchanger can be moved downwards or upwards in the vertical direction relative to the shell, so that the micro-channel heat exchanger is matched with the heat exchange pipes of the micro-channel heat exchanger in expansion and extension or contraction and shortening; the situation that the heat exchange pipes are compressed to be deformed or cracked and even ruptured at the welding positions is avoided, and thus use safety of the radial type air conditioner indoor unit is guaranteed; and appearance of the radial type air conditioner indoor unit can be more attractive.

The invention relates to an automatic high quality rotary cutting device. In a rotary cutting process, a first lifting driving device drives a first lifting rack to lift along a first guiding frame till the center of a first positioning cutter knife and the center of a log are substantially located at a same height. A user operates a first operating handle to push a first sleeve main body to movetoward the direction of the log along a thread; the first sleeve main body applies an inward pressure to a first positioning arm through a first leaning sleeve; the first positioning arm clamps the log through a pair of first leaning tongs; and finally, the log is clamped all around by means of the leaning tongs of three positioning arms. A first advancing and retreating motor drives a first advancing and retreating worm wheel to rotate through a first advancing and retreating worm; the first advancing and retreating worm wheel drives a first shaft main body to slide toward the direction of the log through a first advancing and retreating screw; a first blade is in leaning contact with the log and cuts the log rotatably to form a groove corresponding to a first cone-shaped head to be in leaning contact with a groove formed by rotatably cutting a first end cover automatically, so that an effect of automatic centering is achieved.