46results about How to "Stable and precise rotation" patented technology

Disclosed is a rotary knob assembly for a home appliance. The assembly includes a rotary switch having an encoder and a shaft rotatably installed at the encoder, a knob coupled to the shaft of the rotary switch, and a support member provided around the rotary switch to support the rotary switch.

The invention provides an ultrasonic testing device for a king bolt of a reactor pressure vessel of a nuclear power station. The ultrasonic testing device comprises a base, a vertical frame fixed on the base, a support platform, a holding mechanism and a testing mechanism, wherein the support platform is arranged on the base by a rotating mechanism and is used for supporting the king bolt and driving the king bolt to rotate; the holding mechanism comprises a first mounting base and a holding claw which is arranged on the first mounting base and surrounds the king bolt, and the first mounting base is arranged on the vertical frame and is positioned on one side facing the support platform; the testing mechanism comprises a second mounting base, a transverse driving mechanism, a longitudinal driving mechanism, a first clamp with a center hole inner wall testing probe and a second clamp with an end surface testing probe, the transverse driving mechanism and the longitudinal driving mechanism are arranged on the second mounting base, the second mounting base is arranged on the vertical frame and is positioned above the holding mechanism. The ultrasonic testing device can realize rapid installation, clamping and centering of king bolts with different models and drive the tested king bolt to rotate stably and accurately, and is provided with an ultrasonic testing probe to achieve gross-volume ultrasonic testing of the tested king bolt.

The invention relates to a key structure. The key structure comprises a base, a keycap, a lifting mechanism and a magnetic part; the keycap can move vertically relative to the base through the lifting mechanism; the lifting mechanism comprises a support; one lateral side portion of the support comprises a magnetic portion; the lateral side portion is in abutting joint with the base through a sharp edge; the magnetic portion extends outward from the lateral side portion; the support is flexibly connected with the keycap through an opposite lateral side portion; the magnetic part is arranged on the base corresponding to the magnetic portion; the magnetic suction force is produced between the magnetic part and the magnetic portion; when the keycap is pressed by the external force, the support rotates relative to the base through the sharp edge to enable the magnetic portion to be far away from the magnetic part and the keycap to be close to the base; when the external force is released, the support is driven by the magnetic suction force to rotate relative to the base through the sharp edge to enable the keycap to be far away from the base; the base can be provided with a magnetic part, wherein the magnetic suction force can be applied to the other magnetic portion of the support to drive the lateral side portion to be in abutting joint with the base.

The invention discloses a flax coil continuous loading mechanism and belongs to the field of textile processing machinery equipment. A material transferring mechanism and a bearing carrying mechanismare horizontally arranged on the two sides of the lower side of the loading mechanism respectively; the two sides of a material conveying belt are connected to a main conveying roll and an auxiliary conveying roll which are on the two sides of a fixed bracket in a coiling manner respectively; a drive gear which is adapted to a conveying gear is vertically and rotationally connected to the fixed bracket on the lower side of the conveying gear; a loading rotary shaft is vertically and rotationally connected to the middle part of a rotation truncated cone; a rotation disc is horizontally arrangedat the upper end of the loading rotary shaft; the two sides of the rotation disc are vertically and symmetrically provided with coil clamping mechanism in a radial direction of the rotation disc; oneend of a bearing carrying rotary plate is hinged to the middle part of the supper side of a carrying plate bracket; and a push plate rotary wheel is vertically and rotationally connected to the output ends of a push plate cylinder on the two sides of the lower side of one end of the material carrying rotary plate. The flax coil continuous loading mechanism provided by the invention is reasonablein structure design, can rapidly, efficiently, continuously and smoothly perform conveying and loading on a flax coil, increases the processing automation degree of the flax coil and meets the demandof production use.

A hypoid gear device is provided with a backlash eliminating unit arranged between a driven wheel and a driving pinion to be meshed with the driven wheel. The backlash eliminating unit includes a driven pinion mounted on the same shaft as that of the driving pinion so as to be meshed with the driven wheel, and an elastic member urging the driven pinion on the same shaft of the driving pinion in the direction reverse thereto.

The invention discloses a sheet material processing pressing mechanism, and belongs to the field of sheet material processing machinery and equipment. A driving mechanism, a pressing-down mechanism and a material conveying mechanism of the sheet material processing pressing mechanism are sequentially and horizontally arranged on one side of a fixing bracket from top to bottom, and a horizontal moving connecting plate is slidably disposed at a reciprocating guide rod in the horizontal direction. A horizontal moving rack is horizontally and fixedly arranged on one side of the horizontal moving connecting plate, and rotating pressing plates of a circular arc structure are vertically and symmetrically arranged on both sides of the lower part of a pressing disc. A lifting pressing plate is slidably disposed at lifting guide rods in the vertical direction, and a plurality of pressing lead screws are vertically arranged on the outer side of the lifting pressing plate. Pressing round platformsare fixedly arranged at the lower ends of the pressing lead screws, and a material conveying bracket is horizontally and rotatably connected with a plurality of material conveying rotating rollers inthe horizontal direction in sequence. The sheet material processing pressing mechanism is reasonable in structure design, can horizontally and accurately convey sheet materials according to the needs, can conveniently and smoothly press and fix the sheet materials in the conveying process, and can be applied to the sheet materials of different sizes and specifications to meet the needs of sheet material processing and using.

The invention discloses a grooving device for a camber surface of the inner side of a shaft sleeve workpiece and belongs to the field of machinery equipment for machining the workpiece. According to the grooving device, a workpiece clamping mechanism is arranged at a machining bracket positioned at one side of a translational grooving mechanism; a translational guide plate is horizontally and slidably arranged on a guide support; a push plate bevel is arranged at the lower side of the end part of a translational pressing plate; the translational pressing plate is slidably arranged at a tool bit bracket; a grooving rotary plate is arranged at the tool bit bracket, positioned along the underside of the end of the push plate bevel, of the translational pressing plate; a machining rotary platerotates along bearing plate rotating wheels; the machining rotary plate positioned at the outer side of a clamping main gear is provided with a plurality of clamping auxiliary gears; a rotary gear ofa driving bracket is engaged with a rotary rack of the machining rotary plate; and a converting bracket is horizontally arranged at one side of a lifting bracket. The grooving device is reasonable instructural design, can be used for efficiently and conveniently clamping and fixing the shaft sleeve workpiece and realizing stable and accurate rotation, thereby realizing automatic grooving machining of the camber surface of the inner side of the shaft sleeve workpiece, achieving a high machining automation degree and meeting the use demands of machining of the workpiece.

The invention discloses an intermittent feeding mechanism for yarn and belongs to the field of mechanical equipment for yarn conveying processing. A yarn reel of the mechanism horizontally sleeves a yarn release rotation roller, a damping press wheel is vertically and rotatably connected to one side of a press cylinder guide block, and a damping compression spring is obliquely arranged between a press cylinder guide block and a feeding support; a yarn pulling conveying belt is horizontally arranged at one side of the feeding support, a yarn pulling gear and an intermittent gear are alternatively meshed with each other, and the output end of a yarn pulling motor is in transmission connection with the intermittent gear through a yarn pulling belt; multiple yarn bearing press rollers are rotatably connected to the upper side of a yarn bearing lifting plate of the output end of a yarn bearing air cylinder in the horizontal direction in sequence, multiple press belt rotation rollers are rotatably and horizontally connected to the lower side of a press belt fixing plate in the horizontal direction in sequence, and a roller clamping mechanism is vertically arranged at one side of an auxiliary yarn pull rotation roller. The intermittent feeding mechanism for the yarn is reasonable in structural design, the yarn can be efficiently and conveniently drafted and conveyed segment by segmentand can be automatically, stably and intermittently fed, and the demands of processing and application are met.

The invention discloses a cutting machining device for spherical-surface workpieces, and belongs to the field of workpiece machining mechanical equipment. The cutting machining device comprises a machining conveying support, a horizontal moving and cutting mechanism, a clamping and lifting mechanism, a turning and transferring mechanism and a workpiece conveying mechanism, wherein the horizontal moving and cutting mechanism is horizontally and fixedly arranged on one side above the machining conveying support, the clamping and lifting mechanism is vertically arranged at the position, on one side of the horizontal moving and cutting mechanism, of the machining conveying support, the turning and transferring mechanism is vertically arranged at the position, on one side below the clamping andlifting mechanism, of the machining conveying support, and the workpiece conveying mechanism is horizontally arranged at the position, on one side of the turning and transferring mechanism, of the machining conveying support in a mode of being adjacent to the turning and transferring mechanism. The cutting machining device has the advantages that the structural design is reasonable, the spherical-surface workpieces can be efficiently and stably cut and machined one by one, moreover, automatic transferring feeding and pushing of the spherical-surface workpieces can be achieved, the machining automation degree is high, and the workpiece machining and use requirements are met.

The invention relates to a driving platform of a multi-station combination drilling machine. The driving platform comprises a pedestal, a rotating platform and a driving mechanism, wherein the rotating platform is mounted at the upper end of the pedestal; the driving mechanism is connected with the rotating platform and drives the rotating platform to move; the driving mechanism comprises a ratchet wheel, a connecting shaft, a push block, an air cylinder and a tension spring; the push block is mounted at the front end of a mandrel of the air cylinder; a top block is arranged at the front end of the push block; the ratchet wheel is connected with the rotating platform through the connecting shaft; a plurality of unidirectional ratchets are arranged on the ratchet wheel; bayonets are arranged between the unidirectional ratchets and the ratchet wheel; the top block can be clamped in the bayonets; the tension spring is transversely mounted on the push block; the other end of the tension spring is connected with the pedestal. The driving platform disclosed by the invention is stable and accurate in rotation, simple in structure, and low in production cost.

A cylindrical battery testing platform comprises a linear reciprocating device, a rotating platform and testing benches. The linear reciprocating device is connected with a first servo motor. The testing benches are connected with the movably part of the linear reciprocating device. The testing benches are arranged at two sides of the rotating platform. The rotating platform is provided with rotating shafts which are used for supporting and rotating a battery. The rotating shafts are parallelly arranged in the motion direction of the linear reciprocating device. A to-be-tested area is formed between adjacent rotating shafts. The testing benches are provided with laser length measuring instruments. An included angle between laser transmitting direction of each laser length measuring instrument and the rotation direction of the rotating shaft is 5-90 DEG. The linear reciprocating device realizes spiral laser scanning in a plane through arranging the to-be-tested area which performs rotation relative to the transmitting direction of the laser length measuring instrument and cooperating with linear reciprocation of the laser length measuring instrument relative to the to-be-tested area, thereby realizing online automatic testing.

The invention discloses a dust removing and material conveying mechanism for woolen materials, and belongs to the field of textile processing machinery equipment. According to the dust removing and material conveying mechanism for woolen materials disclosed by the invention, a dust removing rotary cage is horizontally arranged in a dust removing cover shell, spacing baffles adopting an arc-shapedstructure are respectively arranged at the outer ends of the two sides of the dust removing rotary cage, a plurality of material guiding connection plates are sequentially, horizontally and uniformlyarranged on the outer side of the dust removing rotary cage, a dust collecting baffle is horizontally arranged at the middle part of the dust removing rotary cage, dust suction wind pipes are symmetrically arranged on two sides of the dust removing cover shell, and the dust suction wind pipes communicate with the dust removing rotary cage on the upper side of the dust collecting baffle; a materialcharging guiding pipe horizontally penetrates through the upper side of the dust removing cover shell; the upper side and the lower side of a material discharging guiding belt are respectively connected to material discharging rotary rollers on the upper side and the lower side of the dust removing cover shell in a winding manner; and the two sides of the material conveying guiding belt are respectively connected to material conveying rotary rollers on the upper side of the dust removing cover shell and a material conveying bearing plate in a winding manner. The dust removing and material conveying mechanism disclosed by the invention is reasonable in structural design, dust removing processing can be efficiently and conveniently performed on the woolen materials, the woolen materials after dust removing processing can be smoothly conveyed, and processing and using requirements can be met.