66results about How to "Reduce local wear" patented technology

The thread turning process includes the following steps: 1. rough machining of workpiece with rough turning tool; and 2. correcting thread form and eliminating the accumulated error of thread to obtain the required machining precision with finishing tool. The present invention has reduced wear of the finishing tool and raised thread machining precision.

The invention relates to building block system precision flat-nose pliers for large processing table facet machine. The building block system precision flat-nose pliers is essentially to solve the problems of low machine work efficiency of the machine, noticeable partial wear and tear on operation parts of the machine, and poor processing precision of the work pieces with poor rigidity existed in the prior art. The technical proposal is as follows: a group of flat-nose pliers are installed on the work table facet of a machine, which is characterized in that a group of flat-nose pliers comprise three or more independent flat-nose pliers arranged in parallel; each independent flat-nose plier comprises a block, a fixed jaw fixed on the block, two or more movable jaws matched on the block guide rail in a sliding way, and a quick travel mechanism installed on the block; both outer side faces of the block guide rail are equipped with teeth rows; the quick travel mechanism comprises a nut seat matched with the block guide rail in a sliding way, a thrust screw thread matched with the nut seat by screw, and an expansion device arranged on both sides of the nut seat and matched with the teeth rows on both outer side faces of the block guide rail; and a thrust end of the thrust screw is matched with one movable jaw.

It is an object of the invention to provide an effective technique for improving the durability of a torque limiter utilized in a power tool. The object is achieved by a representative power tool comprising a tool bit, a driving mechanism and a torque limiter. The torque limiter includes first and second rotating members, a ball, a pressing member and an elastic member. The second rotating member includes a power transmitting region with a groove continuously formed from a deepest groove part to a shallowest groove part to allow torque transmission and a power transmission interrupted region with a groove shallower than the shallowest groove part of the power transmitting region to interrupts the torque transmission. According to this construction, when the ball is in the power transmitting region, the pressing member contacts the first rotating member and is held in a position in which the biasing force of the elastic member is prevented from acting upon the ball.

The invention relates to a fully-active suspension system which comprises energy accumulators, electronic gear pumps, power cylinders, swing arms, a control system and steering knuckles, wherein the front end of each steering knuckle is cylindrical and the rear end of each steering knuckle is of a plate-like structure; a hub motor stator of each wheel is fixedly connected with the cylinder of eachsteering knuckle; the plate-like structure of each steering knuckle is fixedly connected with the side of one end of each swing arm; the upper surface of one end, connected with a hub, of each swingarm is connected with each power cylinder through a ball joint; the other end of each swing arm is connected with a vehicle body through a ball joint; each power cylinder communicates with a high-pressure oil outlet of each electronic gear pump through a second oil pipe; a low-pressure oil inlet of each electronic gear pump communicates with each corresponding energy accumulator through a first oil pipe; and the control system is connected with the electronic gear pumps through control lines. All-terrain road driving of small-sized vehicles such as logistics vehicles and the like is realized,and efficient vibration suppression and vibration absorption can be achieved.

The invention discloses a coaxial probe short-circuit mechanism and an operation method thereof. The coaxial probe short-circuit mechanism structurally comprises a coaxial probe, a short-circuit plate, a base, a cover board and a cushion block, wherein the short-circuit plate is made of a flexible conductive material, and is fixedly arranged on the cushion block; a probe limiting hole through which the coaxial probe passes is formed in the base; and a limiting sliding block for locking the coaxial probe is also arranged on the base. The limiting sliding block is pressed to slip downwards in an operation; an open end of the coaxial probe simultaneously passes through the probe limiting hole and a through hole in the limiting sliding block; the short-circuit plate is pressed by the open end of the coaxial probe; the limiting sliding block is loosened; a sliding block spring rebounds; and the limiting sliding block slips upwards, so that locking and limiting of the coaxial probe are achieved. According to the coaxial probe short-circuit mechanism, a good contact can be formed by the open end of the coaxial probe and the short-circuit plate; the service lifetime of the short-circuit plate is prolonged; the clamping operation is convenient, fast and reliable; and the consistency of multiple calibrations is good.

Elements of a transmission belt wound around pulleys of a continuously variable transmission each include a body part, a pair of pillar parts, and a pair of side surfaces. The pair of side surfaces each include a first side surface formed on a corresponding one of the pillar parts; and a second side surface formed so as to continue from the first side surface, and located more on an inner circumference side than the first side surface. A pair of the first side surfaces each are formed so as to be inclined toward an inner side of a corresponding one of the pillar parts with respect to an extending direction, from an inner circumference side to an outer circumference side of a ring, of a corresponding one of the second side surfaces continuing from the first side surface, and a pair of the second side surfaces is formed such that the second side surfaces are spaced farther apart from each other as the second side surfaces extend from the inner circumference side to the outer circumference side, and that an angle formed between the pair of the second side surfaces is larger by 0.2 to 0.8 degrees than an opening angle of V-shaped grooves of the pulleys.

The invention discloses an efficient carbon fiber reinforced plastic hole making cutter and a dip angle hole making method, and belongs to the field of carbon fiber reinforced plastic machining. The cutter comprises a cutter bar, a milling supplementary cutting edge, a combined cutting part and a bottom cutting part which are connected in sequence. The dip angle hole making method mainly comprisesthe steps that parameters are calculated; the cutter is parallel to the axis of hole diameter and rotates downwards to carry out feeding in the axial direction, and layer-by-layer shunting machiningis carried out, so that the hole diameter error can finally keep at IT7 - IT8; if the hole diameter error does not meet IT8 - IT9, the dip angle between cutter and the axis of the hole diameter is adjusted, hole pre-milling is carried out, the hole is completed through zero empty trip milling supplementary, the axis of the cutter is adjusted to be parallel to the axis of the hole diameter and eccentric distance, and the allowance of the hole diameter is removed; and if the hole diameter error does not meet the IT7 - IT8, the dip angle between the cutter and the axis of the hole diameter is maintained, the hole pre-milling and the hole completing through milling supplementary are carried out, the cutter returns to an initial null point after the hole making is completed, and quality detection is carried out. According to the efficient carbon fiber reinforced plastic hole making cutter and the dip angle hole making method, the machining defects such as burrs, layering of the carbon fiberreinforced plastic can be avoided.

A connecting method of a dust separation device, a vertical inverted waste-heat boiler and an exhaust piping, aids in dispensing with an independent settling chamber in the dust separation device and the vertical inverted waste-heat boiler(3) by virtue of integration of the dust device and the waste-heat boiler(3), so as to decrease area and obtain reduction of concentrated wear of the waste-heat boiler(3), effectively solving the wear problem of heating surface of the waste-heat boiler(3) which ensures a long term safety operation.

The invention discloses a sliding abrasion-resistant device with internal circulation rolling bodies, and belongs to the technical field of plane sliding. The sliding abrasion-resistant device comprises an outer frame and the multiple rolling bodies, wherein the outer frame is equipped with circulation tracks; the rolling bodies circulate in the circulation tracks; the circulation tracks comprise load sections, return sections and steering sections; the steering sections are used for the endless connections between the load sections and the return sections; the depths of the return sections are greater than those of the load sections; a sliding object is carried on the rolling bodies in the load sections and is in zero contact with the rolling bodies in the return sections; when the sliding object slides, the rolling bodies in the load sections roll under the action of friction force; and then, all the rolling bodies are driven to circulate in the circulation tracks. According to the sliding abrasion-resistant device, the sliding friction of the sliding object is converted into the rolling friction, so that the friction of the sliding object at the same pressure can be greatly reduced, the sliding process can be facilitated, both the time and the labor can be saved, and meanwhile, the abrasion can be reduced; furthermore, the depths of the return sections are greater than those of the load sections, the sliding object is arranged on the rolling bodies in the load sections, and the contact between the sliding object and the rolling bodies in the return sections is prevented, so that the normal circulation of the rolling bodies in the sliding process of the sliding object can be guaranteed.