38results about How to "Eliminate elastic deformation" patented technology

The double pendulum milling head driven by the AC permanent syntactic rotor torque motor having a cross hollow shaft, whose both ends fixed on the rotor of the horizontal torque motor at both ends of the A shaft. Acting as an integral, they are fixed on the rotor of the vertical torque motor of C shaft. In this way, vertical motor driving the milling head to rotate around C shaft, and A shaft horizontal motor driving the pendulum of milling head around A shaft. It complete the complex machining of the working piece through compound motion in two directions matching the high speed revolution of the shaft itself. It is compact in structure, simple of drive, good in rigidity, smaller in mechanical components quantity, higher reaction sensitivity, free from wear and reverse gap, being able to machining for a five-face body with high precision.

The invention discloses a turnover beam of a side-by-side combination refrigerator. The turnover beam comprises a turnover beam body. The turnover beam body is pivotally connected onto a side wall of an optional door, and a guide seat which can guide to turnover beam body into a horizontal sate when the door is closed is arranged inside the top of a container of the refrigerator; the turnover beam body comprises an outward turnover shell and an inward turnover moving body, the inward turnover moving body can move up and down along an inner cavity of the outward turnover shell, and an elastic guide body which can be in contact with the guide seat is arranged on the top of the inward turnover moving body, and moves downwardly when being squeezed by the guide seat. The turnover beam has the advantages that the turnover beam is provided with the elastic guide body, the elastic guide body moves downwardly when squeezed by the guide seat, accordingly, interference of the guide seat on the turnover beam body can be prevented, the turnover beam does not need to be preliminarily set in a vertical state when the door is closed, and is simple in structure and high in practicality, and the operational convenience can be improved.

A pipeline connecting pipe fitting comprises a nut, a joint, a joint external cone table and a connection pipe horn port and is characterized in that an inner cone hole is formed in the nut, a clamp sleeve for match usage is arranged in the inner cone hole of the nut, the clamp sleeve is provided with a hollow clamp sleeve hole, a clamp sleeve inner cone hole is formed in the bottom of the clamp sleeve hole and consists of a clamp sleeve inner cylinder hole and a clamp sleeve inner cone hole horn groove, the clamp sleeve inner cylinder hole is provided with a seal cone surface, a clamp sleeve hole wall and a clamp sleeve outer cone inclined surface form a clamp sleeve cone inclined angle, the joint outer cone table extrudes the seal cone surface to achieve cone surface sealing, the joint outer cone table extrudes the connection pipe horn port in the clamp sleeve inner cone hole horn groove to achieve horn groove sealing, and the nut inner cone hole extrudes the clamp sleeve to extrude a connection pipe to achieve clamp sleeve sealing. The pipeline connecting pipe fitting has the advantages that seal connection is convenient, seal process requirements are low, seal properties are high, the pipeline connecting pipe fitting can be applied to connection of low-hardness thin-wall metal pipes made of dissimilar materials and can be completely interchanged with connection nuts in the prior art.

The invention relates to a pressure welding method and a pressure welding machine (1) which is provided with a frame (10), two welding heads (13, 14), mobile along a feed axis (41), and two adjusting units (17, 18) comprising feed drives (23) for the welding heads (13, 14). The two adjusting units (17, 18) are mounted so as to be axially movable (41) on the frame (10) and are interlinked with an adjusting drive (25) by means of a common adjusting element (26) and supported in a closed system of forces while receiving the pressure welding forces, thereby relieving the frame (10). The adjusting element (26) is configured as a continuous spindle (27) having two self-locking threads (28, 29) that run in opposite directions.

A fastening device, e.g., for an electrical cable in a vehicle, has a sleeve which is lockable in a holder and which encloses the line. The sleeve has at least two sleeve subareas which are at least partially separable from one another in such a way that in a preinstalled state the line is inserted into an inner area of the sleeve, and the sleeve subareas are connectable to one another in such a way that in an installed state the line is completely annularly enclosed by the sleeve subareas. Due to the multipart configuration of the sleeve, it is easily mounted on a line. A resistant material such as a thermoplastic elastomer, which is processable with the aid of injection molding, is used for the sleeve.

The invention relates to a batch-type grinding method of a hard coating material, comprising the following steps: carrying out alternate batch-type grinding by adopting a grinding wheel feeding way and a grinding wheel no-feeding way in the grinding process; when the grinding wheel feeding way is adopted, carrying out high-speed or ultra high-speed grinding; when the grinding wheel no-feeding wayis adopted, carrying out no-load reciprocatory grinding; and after every time of feed grinding of a grinding wheel, carrying out the no-load reciprocatory grinding for 2-20 times according to the actual condition; wherein the high-speed or ultra high-speed grinding comprises that the primary feed grinding depth is 10-15mu m, the feeding speed of an operating platform is 6000-30000mm/min, and the linear speed of the grinding wheel is 80-200m/s. In the invention, variation of the actual grinding depth caused by elastic deformation and heat deformation of the grinding wheel and workpieces can beeliminated to the utmost extent, the heat produced at high-speed grinding can be timely released, and the grinding wheel can maintain to be sharp, thus the material removing rate is improved, the grinding surface burning is effectively reduced, the grinding wheel loss and production cost are greatly reduced, and the good processing quality is obtained.

The invention discloses a refrigerator turnover beam which comprises a turnover beam body. The turnover beam body is connected to the side wall of any door body in a pivoting mode, and a guide seat capable of guiding the turnover beam body to be in a horizontal state when the door bodies are closed is arranged in the top of a container of a refrigerator. The turnover beam body comprises an outward-turnover shell and an inward-turnover beam body arranged in the outward-turnover shell, a containing cavity used for containing a guide support movement assembly is formed between the top inner wall of the outward-turnover shell and the top outer wall of the inward-turnover beam body, the guide support movement assembly comprises the guide support and an elastic piece, the guide support is extruded by the guide seat to move leftwards/rightwards, elastic deformation is eliminated through the elastic piece, and therefore resetting is achieved. The turnover beam body avoids interference of the guide seat, the turnover beam does not need to be set in a vertical state in advance when the door bodies are closed, damage caused by operation errors to a turnover structure is avoided, the structure is simple, and high practicality is achieved.

The present invention relates to a method for removing drive gap in heavy-load gearbox and elastic deformation. Said method includes the following steps: using the motor drive current before last operation stop as basis and using it as initial pretorque current for present start, and applying it to motor, starting working brake, converting the pretorque current into the pretorque current required for present operation according to a certain conversion rate, starting safety brake, the motor can be acceleratively started and operated so as to implement present start.

According to the invention, the antifriction bearing (18) needs not to open the outside lane (23). However, the outside lane (23) has a filling groove (34) for keeping unblock when being used. However, the diameter of the filling groove (34) is smaller than the diameter (D) of the ball, thereby the ball (25) does not fall off. In addition, the outside lane (23) of the bearing (18) displays a definite radial elastic. And the antifriction bearing (18) is radially and constrainedly installed through a pressing cooperation, thereby the ball (25) no longer jump out of the bearing (18). In order to assembly antifriction bearing (18) in an accurate angle, the filling groove (34) is out of the range of maximum stress. For this purpose, the filling groove (34) is preferably structured to cause the sealed ring (33) to keep existed and visible.

The invention discloses an intelligent power module and a packaging method of the intelligent power module. An eliminating structure is arranged on the part, in a sealing layer, of a pin, a stress eliminating structure generates elastic deformation when stress is applied, the stress of stretching force and extrusion force transmitted to a substrate by the pin can be effectively reduced, therefore,the stress finally transmitted to an insulating layer is greatly reduced, the result of poor packaging caused by cracks generated on the insulating layer is avoided, and the yield of packaged finished products is improved.

The invention discloses a cold extrusion forming process of a helical gear. The cold extrusion forming process specifically comprises the following steps: (1) spheroidizing annealing, shot blasting and phosphorus saponification treatment are sequentially conducted on a bar; (2) the bar treated in the step (1) is placed in a cold extrusion die to enable the bar to form a forming blank with a required spiral gear groove; (3) the formed blank in the step (2) is placed in an upset-extrusion forming die, the head of the blank is upset, and a forged piece is obtained; and (4) the forged piece in thestep (3) is subjected to isothermal normalizing treatment, so that the gear meets the technical requirements of products. According to the preparation method, a rotary lower die structure is adopted,a lower die freely rotates under the action of radial force generated when materials flow, and therefore the requirement for forming a spiral angle is met; the extrusion speeds of three strokes are adopted, so that the gear profile of a part is completely filled; and two sets of hydraulic systems are adopted, so that elastic deformation and friction deformation of gear sides caused by demolding are eliminated.

According to the automatic parking control optimization method and system, through control logic optimization of the APA on the EPS, elastic deformation of wheels is eliminated in the dynamic straight moving process of a vehicle, it is guaranteed that a steering wheel is stabilized in the middle position after automatic parking exits, and the problem that after automatic parking is completed, the steering wheel accidentally rebounds by a certain angle from the middle position is solved. It is guaranteed that the steering wheel is stabilized in the middle position after automatic parking quits, and the final control effect and customer experience of the whole parking process are improved.

Improvement in a spool of a copying distributor in a hydraulic circuit for controlling the motion of a cylinder for a hammer in a punching machine, includes a pressurized fluid source in communication with said hydraulic circuit, a distributor body which is connected to said hydraulic circuit through pipe fittings and is formed with pressurised-fluid supply lights and discharge light communicating with said pipe fittings, at least one valve means arranged in said hydraulic circuit to control the said distributor body, a spool slidably mounted in said body and arranged cyclically to open and close the said lights, one operating end of said spool extending outside said distributor body through a calibrated aperture and being arranged to abut against a reference member designed to move rigid with said hammer. The improvement provides for a recess formed in said operating end and having one end thereof blind and its other end open, a pin slidably mounted in said open end and arranged to be displaced therein by pressurised fluid flows controlled by said valve means, and at least one duct formed in said distributor body and arranged to feed pressurised fluid from said fluid source to said recess.

The invention relates to the technical field of machining, and discloses a full-automatic progressive die for a hinge shaft. The progressive die comprises an upper die holder and a lower die holder; aguide hole punching die block, a cutting die block, a semi-forming die block, a full forming die block, a side hole punching die block and a cutting-off die block are sequentially arranged on the upper die holder. The machining procedure of a right front car door lower hinge is subjected to new arrangement, on the basis of ensuring machining precision, the right front car door lower hinge can bemachined in the same machining die, through one machining die, personal losses can be reduced, and machining speed is improved; and the progressive die can effectively solve the problems that the right front car door lower hinge is high in forming cost and complex in process

The invention discloses a porous arch bridge water bag pre-pressing construction method which comprises the following steps: S1, pre-pressing control tonnage and load classification are carried out, a pre-pressing coefficient is set to be 1.2, and a pre-pressing balance weight is calculated according to 1.2 times of the upper load of each span; s2, a water bag is adopted for prepressing, and the water bag is filled with water; s3, pre-pressing implementation and observation are carried out; s4, prepressing of a foundation and a support, in the step S3, measurement control points are arranged before prepressing construction, original data of the control points are collected, accurate lofting is conducted on the control points through a total station, the control points are arranged at arch feet, 1/8L, 1/4L, 3/8L and an arch crown, and five points are distributed on each section and distributed on bottom dies on the axis of a bridge and the two sides of an arch ring; according to the water bag pre-pressing construction method for the porous arch bridge, inelastic deformation of the foundation and the full framing of the porous arch bridge can be eliminated, construction safety is ensured, sand or gravel can be completely eliminated after pre-pressing is completed, and resources are saved.