32results about How to "Guaranteed Tolerance Requirements" patented technology

The invention discloses a processing technology for thin annular parts. The problems that the out-of-tolerance of size and geometric tolerance of the thin annular parts is easily caused in the traditional processing technology are solved. The processing technology for thin annular parts comprises the following steps of: installing a core shaft, and turning an outer circle; sleeving the outer circle and turning an inner circle; carrying out aging treatment. The processing technology for the thin annular parts is reasonable, and the finishing quality of the thin annular parts is improved.

The invention discloses a ray-type thickness gauge and a calibration method thereof. The thickness gauge comprises a ray source, a ray detector, a pre-amplification circuit board, a control cabinet, a terminal display and operation device, and a C-shaped rack, wherein the ray source is arranged at the lower part of the throat gap of the C-shaped rack; the ray detector is arranged at the upper part of the throat gap of the C-shaped rack; a to-be-measured metal belt penetrates through the throat gap of the C-shaped rack; the pre-amplification circuit board is connected with the control cabinet;and the control cabinet is connected with the terminal display and operation device, and is used for calculating and displaying a thickness and receiving the instruction of an operator. According to the calibration method of the thickness gauge, the measuring accuracy after fast calibration can reach the precision level of a just calibrated thickness gauge, so as to save time spent in re-calibration, eliminate an error caused by anthropic factors during calibration carried out by the operator, and provide a high-precision thickness measure value for the thickness control system of a rolling mill. Therefore, the production efficiency of the rolling mill can be improved; and the tolerance requirement of the metal belt rolled by the rolling mill can be guaranteed.

The invention discloses a novel magnetic suspension energy storage flywheel rotor. The novel magnetic suspension energy storage flywheel rotor is composed of a motor rotor, a magnetic bearing rotor, aflywheel upper shaft and a flywheel lower shaft; the motor rotor is adhered to the flywheel upper shaft and the flywheel lower shaft through a magnetic steel partition plate, and is connected with anon-magnetic alloy steel sheath, so that tensile stress generated by a centrifugal force during high-speed rotation can be offset; high-strength laminations are adopted as the laminations of the magnetic bearing rotor, and a high lamination coefficient is ensured so that the magnetic bearing rotor can withstand the centrifugal force generated by the high-speed rotation of the flywheel rotor; a speed sensor is integrated at a position close to the magnetic bearing rotor, and therefore, the detection accuracy of the sensor can be improved. The novel magnetic suspension energy storage flywheel rotor of the present invention is a comprehensive design based on rotor structural strength, dynamic characteristics and electromagnetic characteristics.

The embodiment of the invention discloses a method for processing a crankshaft of a multiaxial warp knitting machine. The crankshaft comprises a spindle diameter and a connecting rod diameter. The connecting rod diameter is connected with the spindle diameter. The method comprises the following steps of: step A: processing a raw material through the steps of drilling a first center hole, roughly turning, hardening and tempering, and fine turning an outer diameter to obtain a polished shaft; step B: respectively drilling a second center hole of the crankshaft and a third center hole of the connecting rod diameter at the opposite positions at both ends of the polished shaft, drilling a process positioning hole at the position at a distance of 20mm from the first center hole, carrying out fine turning on the spindle diameter and the connecting rod diameter according to the process positioning hole, the second center hole and the third center hole, and carrying out milling and rough grinding to obtain a semi-finished product; and step C: carrying out high-frequency quenching on the semi-finished product, drilling and reaming pin holes at both ends of the semi-finished product and carrying out fine grinding processing to obtain a finished product. In the embodiment of the invention, when the outer diameter, the spindle diameter and the connecting rod diameter are subjected to fine turning, positioning is carried out through the process positioning hole and the respective center holes, so that when the outer diameter, the spindle diameter and the connecting rod diameter are processed, the requirement on a tolerance of the eccentricity of the connecting rod diameter and the spindle diameter of the crankshaft can be guaranteed.

The invention relates to a trunnion imbedding method of a metallurgical slag pot. A processed trunnion is cast on a slag pot body to complete casting of the trunnion and the slag pot body when the slag pot body is cast. The trunnion imbedding method comprises the following steps of (1) preparing an outer sand mould; namely transversely embedding the processed trunnion in the sand mould, and stretching an inside end of the trunnion into a cavity of the outer sand mould; and (2) enabling the outer sand mould to be sleeved on an inner sand mould, casting molten steel in a cavity between an outer sand mould model and an inner sand mould model, casting the trunnion on the slag pot body, removing the sand moulds after cooling, and completing the casting of the trunnion and the slag pot body. The trunnion imbedding method is simple in operation, high in work efficiency, short in production period and low in production cost.

The invention belongs to the field of machining, and provides a method for machining a positioning welding clamp. The machining method includes the steps that firstly, a bottom plate used for connecting three brackets and two positioning pin mechanisms is machined, and position lines of the brackets and the positioning pin mechanisms are drawn through a numerically-controlled needle; secondly, after single-piece machining and welding are conducted on the brackets and the positioning pin mechanisms, internal force is removed through annealing, the bottom faces of the brackets and the positioning pin mechanisms are milled to be flat through a milling machine, and it is ensured that the brackets and the positioning pin mechanisms are attached to the bottom plate; and thirdly, the whole bottom plate, the whole brackets and the whole positioning pin mechanisms are machined, the bottom plate, the brackets and the positioning pin mechanisms are measured to be qualified after numerically-controlled machining, and inspection is conducted after bench workers polish numerically-controlled machining moulding faces. The machining method has the beneficial effects that due to the adoption of the machining method, the relative position relationship of the three brackets and the positioning pin mechanisms can be ensured, and the tolerance requirement of the positioning and welding clamp can be ensured.

A cutting-off and material returning device for cutting off automobile door glass guide rails comprises a base, a clamping mechanism, a cutting-off mechanism and a material returning mechanism. The clamping mechanism comprises a clamping oil cylinder, a sliding block, a movable clamping block and a clamping assembly. A clamping oil cylinder piston rod is fixedly connected with one end of the sliding block, and the other end of the sliding block is fixedly connected with the movable clamping block through a movable clamping block mounting seat. An upper wedge and a lower wedge are fixed to the upper portion and the lower portion of the movable clamping block correspondingly. The clamping assembly comprises an upper knife, a middle shaping plate and a lower knife. The middle shaping plate is fixed to a mounting frame. The upper knife and the lower knife are connected to the upper portion and the lower portion of the middle shaping plate in a floating mode correspondingly. The front end of the movable clamping block corresponds to the middle shaping plate. The upper wedge and the lower wedge correspond to the upper portion of the upper knife and the lower portion of the lower knife respectively. The cutting-off mechanism comprises a cutting-off oil cylinder and a cutting-off knife. The material returning mechanism comprises a material returning oil cylinder and a material returning rod. According to the cutting-off and material returning device for cutting off the automobile door glass guide rails, structure setting is ingenious, feeding is convenient, material returning is smooth, non-deformation of cut-off products can be guaranteed, and an automatic material returning function can be completed after cutting-off.

A two-dimensional high-precision worktable with a grating ruler comprises a motor I, a fixed seat, a grating ruler reading head, a sliding seat I, a grating head mounting support, a grating ruler seat, a motor II, the grating ruler, a grating support and a sliding seat II; the motor I is connected with the sliding seat I through a transmission mechanism I, and the grating head mounting support ismounted on the sliding seat I; the grating ruler reading head is mounted on the grating head mounting support; the grating ruler seat is mounted on the fixed seat; when the sliding seat I moves up anddown, the grating ruler reading head and the grating ruler seat make mutual movement, and the grating ruler reading head records the moving trajectory; the sliding seat II is connected with the sliding seat I through a sliding block; the motor II drives the sliding seat II through a transmission mechanism II to move relative to the sliding seat I; the grating ruler is fixed to the sliding seat I;the grating support is fixed to the sliding seat II; and when the sliding seat II moves forwards and backwards, the grating ruler records the moving trajectory. Through the two-dimensional high-precision worktable, the accurate radian feeding mode of a tile-shaped wire cutting machine can be guaranteed, and the tolerance requirement of a machined part R1 is guaranteed.

The invention discloses a spare tire cover plate production technology, a mold for the spare tire cover plate production technology and a spare tire cover plate. The spare tire cover plate productiontechnology comprises the following steps of: preparing the mold, to be specific, hanging a drapery fabric on a front mold of the mold, and inserting a buckle into a back mold of the mold, wherein theconnecting end of the buckle protrudes out of the back mold; carrying out preposition manufacturing, to be specific, manufacturing a plastic rubber parison being at a soft state; and carrying out postposition manufacturing, to be specific, putting the plastic rubber parison between the front mold and back mold of the mold subjected to mold preparation, then causing the drapery fabric to be adheredto the plastic rubber parison and the connecting end of the buckle to be inserted and adhered to the plastic rubber parison through the mold closing of the mold, molding and solidifying the plastic rubber parison to form the spare tire cover plate. The spare tire cover plate production technology can save time and improve production efficiency, and can also overcome the technical problems that the manual fabric adhering causes unstable fabric hanging, and further bulges and creases are easily caused; the spare tire cover plate production technology enables the drapery fabric to be firmly hungand have good appearance effect and can ensure the perpendicularity of the buckle so as to meet the requirement on tolerances for products.

The invention discloses a distribution type heat collection board molding method. The method comprises the steps that a stainless steel clamp plate which is integrally molded is firstly designed, and the whole flatness of the clamp plate meets the use requirement; according to the appearance requirement for machining a distribution type heat collection board, fins and wheel type embedded blocks are machined, and the heat collection board is assembled; through the integrally-molded stainless steel clamp plate, the novel distribution type heat collection plate is subjected to whole brazing, and in the brazing process, the welding temperature condition is strictly ensured; a process hole is formed in the heat collection plate obtained after brazing. According to the method, the problem that the technical requirement caused by increasing of the appearance size, increasing of number of mechanical connectors, irregular distribution of hot connectors and the like of a novel returning satellite single-phase fluid loop heat collection board needs to be improved, and consequently, the heat collection problem to manufacturing and molding of the heat collection board is caused is solved.

The invention relates to a method for processing vertical pin holes in workpiece taper faces. The method includes the following steps: (1) designing a second workpiece matching with the taper face of a workpiece according to the shape of the taper face of the workpiece, wherein the second workpiece comprises a horizontal surface and a surface matching with the taper face of the workpiece; (2) welding the workpiece with the second workpiece; (3) aligning a drill bit with the central portion of the horizontal surface of the second workpiece to drill downwards vertically till reaching the needed depth of the pin hole; (4) using a cutting tool to cut open the workpiece with the taper face and the second workpiece; (5) grinding the workpiece with the taper face to smooth. The method solves the problem that direct processing cannot be carried out without work aids; combination is facilitated, operation is simple, performance is high, timesaving and laborsaving effect is achieved, and quality and tolerance requirements of the processed pin hole are assured; cutting precision is improved, harm to workpieces is small, and the method is an efficient taper-face workpiece perforating method.

The invention discloses a fault detection method and system for an X-ray generating device of a thickness gauge, wherein the method and system are used for a detection platform which comprises a shielding protection device, an analysis device, and an auxiliary ray detector. An opening is formed in the shielding protection device and is used for allowing working rays of the X-ray generation deviceto pass through; the analysis device is connected with the auxiliary ray detector, the auxiliary ray detector is used for detecting the intensity of the non-working rays, and the analysis device is used for monitoring the intensity of the non-working rays. The method comprises the steps: installing an X-ray generation device in a shielding protection device; detecting the thickness of a preset standard plate by adopting an X-ray generating device, and acquiring the intensity of non-working rays through an auxiliary ray detector; monitoring and judging whether the intensity of the non-working rays conforms to a preset range or not; and if not, generating fault alarm information. By means of the invention, whether the X-ray generating device breaks down or is stable or not can be accuratelyjudged in advance.

The invention discloses a tension balancing system arranged at the bottom of a stand pipe. The tension balancing system comprises a stand pipeline terminal, a tension balancing anchor chain and a deepwater suction pile; one end of the tension balancing anchor chain is connected to a lifting lug at the pipeline terminal through a shackle, and the other end of the tension balancing anchor chain is connected to an underwater ROV lifting hook on the deepwater suction pile through a reinforcing ring; the tension balancing anchor chain is composed of a reinforcing ring, a special end ring, an end ring, a common chain ring and the shackle which are connected in sequence; and the deepwater suction pile comprises an ROV (remote operated vehicle) platform and an ROV lifting hook, and the ROV lifting hook is fixed on the ROV platform. According to the tension balancing system, a steel catenary riser is connected to a riser pipeline terminal, unbalanced tension is transmitted to the deepwater suction pile through the tension balancing anchor chain, passive balancing of tension is achieved due to the unidirectional stress characteristic of the anchor chain, and the purpose of protecting integrity and safety of deepwater subsea pipeline end facilities and underwater facilities connected to the deepwater subsea pipeline end facilities is achieved.

The invention discloses a welding and locating device of a swing arm. The welding and locating device comprises a base. A locating shaft used for locating a sleeve is vertically mounted on the base, and a pressing part used for pressing the sleeve is mounted at the end, away from the base, of the locating shaft. A locating seat used for locating a pin assembly and a press block used for pressing the pin assembly are further mounted on the base. Locating pins are further mounted on the base. A locating plate used for pressing a partition plate is arranged on the locating pins. A step plate usedfor locating the bottom plate is arranged beside the locating plate. A locating block used for locating a limiting block is arranged beside the locating shaft. According to the locating device, aftermain components of the swing arm are precisely located, welding work can be conveniently carried out on the swing arm later; the structure is simple, and locating is precise; and the position dimension and tolerance requirements for parts of a swing arm assembly can be guaranteed.

The invention discloses a device for automatically printing colored rings on shells. The device is composed of a machine body (1), a main transmission system (2), a shell rotating system (3), a longitudinal movement system (4), a printing ink coating portion (5) and an electric portion (6), wherein the main transmission system (2), the shell rotating system (3), the longitudinal movement system (4) and the printing ink coating portion (5) are all located on the machine body (1), the electric portion (6) is electrically connected with the main transmission system (2) and the shell rotating system (3), the main transmission system (2) is connected with the printing ink coating portion (5), and the shell rotating system (3) is connected with the shells. The device is accurate in clamping and convenient to use, and precision requirements in terms of design and technology of color rings on the shells are met, bulk production is achieved, product quality is guaranteed, and qualified products can be delivered on schedule.