11results about How to "High displacement accuracy" patented technology

The invention discloses a vibrating wire strain gauge automatic calibration device with a force value monitoring function, and relates to the field of measuring instrument calibration, the vibrating wire strain gauge automatic calibration device comprises a fixing assembly fixedly connected to a bottom plate, the fixing assembly comprises a first fixing frame and a second fixing frame which are arranged at an interval in the length direction of the bottom plate, and two guide shafts are connected between the two fixing frames; moving assemblies are arranged on the two guide shafts in a linear reciprocating sliding mode. The moving assembly and the first fixing frame are oppositely provided with at least one pair of clamping assemblies which are matched with each other, and the clamping assemblies are used for clamping a to-be-tested vibrating wire strain gauge. The side, facing the first fixing frame, of the moving assembly is connected with a displacement sensor, and the side, deviating from the first fixing frame, of the moving assembly is connected with a driving assembly driving the moving assembly to be close to or away from the first fixing frame. The vibrating wire strain gauge calibration device and method have the advantages of large output force value, high displacement precision, high calibration speed, good safety performance, high applicability and the like, and can meet the calibration requirements of vibrating wire strain gauges of different sizes.

The invention discloses a full-automatic horizontal machining center, and belongs to the technical field of machine tools, the full-automatic horizontal machining center comprises a square frame, a cutter feeding system, a cradle, a left supporting seat, a right supporting seat, a servo rotation driving device and a brake device, the cutter feeding system is arranged on the square frame, the cradle is used for clamping and bearing a machined workpiece, and the left supporting seat is arranged on the right supporting seat; the left supporting seat and the right supporting seat are arranged at the left end and the right end of the square frame, a left supporting shaft on the cradle is installed on the left supporting seat through a bearing, a right supporting shaft on the cradle is installed on the right supporting seat through a bearing, the left supporting shaft and the right supporting shaft are coaxially installed, and the servo rotation driving device is used for driving the left supporting shaft to rotate. The brake device is used for limiting rotation of the right supporting shaft. The cradle is of a latticed frame plate structure made of materials which are light in weight and high in bearing capacity. According to the cradle, the latticed frame plate structural design is adopted, a horizontal rotating system of the cradle is moved away, the weight of the cradle is greatly reduced, the moving inertia is reduced, the displacement precision of the cradle is improved, and therefore the machining precision and stability of the machining center are improved.

The utility model relates to a knife sharpening technical field, and disclose an automatic knife sharpening device, including the knife rest of installation for the knife edge part of cutting knife is used to the knife sharpening assembly of grinding, the knife sharpening assembly includes the electromagnet and the knife sharpening stone of knife rest installation through the knife sharpening support, the knife sharpening stone is opposite with the knife edge part of cutting knife and is adjusted the interval of both through the electromagnet, the utility model discloses the interval of the knife sharpening stone and cutting knife is adjusted through the electromagnet, when electrifying, electromagnet core drives push rod and makes the knife sharpening stone close to the knife edge, after power off, reset under the spring action, need not stop the machine to complete grinding, can greatly shorten the knife sharpening time to improve equipment utilization and processing efficiency, and then improve actual capacity, also avoid the body injury and the dust inhalation etc. safety hidden danger brought by manual stop operation simultaneously.

The utility model discloses a kind of spraying devices of silicon-carbon rod, it is related to silicon-carbon rod processing technical field, including bottom plate, the upper end left part fixed mounting of bottom plate has spraying structure, the upper end right part fixed mounting of bottom plate has feeding adjustment assembly, the inside movable joint of feeding adjustment assembly has multiple point fixed assembly, feeding adjustment assembly includes two guide rails, the lower end of two The front position fixed mounting of right part of bottom plate lower end. The spraying device of silicon-carbon rod in the utility model, by feeding adjustment assembly, can be driven by electric cylinder driving support plate with fixed cylinder linear movement, so that fixed cylinder will its inner wall fixed silicon-carbon rod send into spraying frame and spray aluminum. Electric cylinder replaces manual adjustment, improves displacement accuracy, and also reduces the risk of manual operation. By multiple point fixed assembly, the silicon-carbon rod hot end can be fixed using the embracing type fixing method of four arc clamps, realize multiple point fixing, and have strong stability.

The invention belongs to the technical field of textile machinery, and relates to an automatic winding machine. The multi-station electronic yarn guiding device comprises a winding machine main frame, a material pipe feeding disc is arranged on the winding machine main frame, a material pipe vertical frame used for vertically arranging and fixing a plurality of material pipes is arranged at the tail of the material pipe feeding disc, a multi-station electronic yarn guiding device is arranged on the winding machine main frame, and the multi-station electronic yarn guiding device comprises a fixing support, a main shaft support and a tailstock support. The spindle support is provided with a plurality of yarn bobbin spindle units capable of rotating synchronously and a winding motor set used for driving the yarn bobbin spindle units to rotate, and the tailstock support is provided with a yarn bobbin jacking structure capable of doing reciprocating rectilinear motion along the end close to or away from the yarn bobbin spindle units. Full-automatic design is adopted, automatic material preparation, feeding, material clamping, multi-head synchronous yarn guiding, multi-strand yarn tension control and multi-strand yarn breakage monitoring are achieved, the labor intensity of workers is greatly reduced, and the production efficiency is improved.

The invention relates to a weight anti-swing device of a torque standard device, which comprises a weight loading table and a weight frame, a connecting column is arranged at the lower end of the weight frame, a matching hole capable of being in clearance fit with the connecting column is formed in one end of the weight loading table, and the weight anti-swing device further comprises an anti-swing mechanism; a base of the anti-swing mechanism is fixed below the weight loading table, two clamping pincers can slide relatively, eccentric wheels are arranged on the outer sides, away from each other, of the clamping pincers, the clamping pincers can slide in the direction close to or away from the clamping hole by rotating the eccentric wheels, a sliding block is further arranged in the base, and the sliding block is further connected with a driving mechanism for driving the sliding block to move in the length direction of the sliding block. Through clearance fit between the connecting column and the matching hole, the weight frame and the weight are ensured to be in a completely free state after the weight is loaded or unloaded; in the loading process of the weight, the device is prevented from being affected by the surrounding environment through the anti-swing mechanism, and the technical problem that the metering precision is affected due to the fact that the weight frame shakes due to trace sound waves and airflow after being clamped can be solved.

The embodiment of the application provides a rigid workpiece bevel exposure device, which is used for improving the precision of a laser direct writing imaging device. The rigid workpiece is driven by a harmonic reducer to perform linear stepping motion, and a light source module performs linear scanning operation in the vertical direction of the linear stepping motion, without the light source module moving in the horizontal and vertical directions at the same time, thereby avoiding vertical position errors caused by multiple scanning motions and improving the precision of exposure imaging. Secondly, the scanning motion carrier and the roller driving system are both installed on the first bevel of the base, so that the feeding and discharging are both in the form of bevel feeding and discharging, thereby avoiding the rigid workpiece occupying too large horizontal space in the horizontal direction when feeding and discharging in the horizontal direction, and saving production space. Finally, the device adopts a harmonic reducer as a transmission structure, which is small in size, light in weight and simple in structure, and the backlash of the harmonic reducer is generally within 1 arc minute, so that the high-precision stepping of the rigid workpiece can be ensured, and the imaging precision is further improved.

The invention relates to a bolt and nut fastening device for automobile machining, which comprises a quick-insertion type locking mechanism, and the quick-insertion type locking mechanism comprises a locking motor, a locking main driving rod, a transition sleeve, a replacement transition rod and a disassembly sleeve; one end of the locking main driving rod is fixedly connected with the output end of the locking motor, the other end of the locking main driving rod is movably connected with the transition sleeve in a pluggable mode, and the end, away from the locking main driving rod, of the transition sleeve is fixedly connected with one end of the replacement transition rod. The end, away from the transition sleeve, of the replacement transition rod is movably connected with the dismounting sleeve in a pluggable mode. The anti-shearing force of the locking main driving rod can be effectively improved, the service life of the locking main driving rod is prolonged, the situation that accessories are replaced due to abrasion caused by frequent tangential force is improved, the accessory replacement cost is reduced, the accessory replacement convenience is improved, synchronous locking is achieved according to opposite angles fastened by bolts and nuts at different positions, and the locking effect is good. And the stress uniformity of part assembly in the automobile machining process is improved.

The utility model discloses a gear rack driven screen frame lifting structure, which comprises a bearing beam, a screen frame, a second gear, a lifting rack and third gears, the output end of a servo motor is fixedly connected with a first gear, the first gear is meshed with the second gear, the second gear is fixed on a second connecting rod, and the third gears are fixed at two ends of the second connecting rod. The servo motor drives the gears to rotate, the rotating gears are meshed with the racks to drive the screen frame to ascend and descend, the screen frame is driven by power when descending and ascending, and the screen frame is driven by the power when descending and ascending. A traditional pneumatic driving structure is replaced, the structure is simpler, and the maintenance cost is reduced while the working efficiency is improved; when the screen frame ascends and descends, the lifting plate can be limited by the limiting sliding blocks, deviation of the screen frame in the ascending and descending process is avoided, and the ascending and descending displacement precision of the screen frame is improved.

A micro-stage and a lithography machine are disclosed, relating to the field of semiconductor manufacturing equipment technology. The micro-stage is used on the coarse stage of a lithography machine. The micro-stage includes a moving part, a fixed part, and a driving part. The fixed part is connected to the coarse stage, and the moving part is movably disposed on top of the fixed part. The top surface of the moving part has a substrate for supporting a wafer. The driving part has a first driving member and a second driving member for relative motion. The first driving member is disposed on the side of the moving part facing the fixed part, and the second driving member is disposed on the side of the fixed part facing the moving part, so as to drive the moving part to move relative to the fixed part through the first driving member. A measurement mating part is integrally formed on the surface of the moving part, which is used to cooperate with an external measuring device to obtain the relative distance between the moving part and the fixed part. This micro-stage has a compact structure and high integration, improving space utilization and facilitating lightweighting and miniaturization.

The utility model relates to a steel plate groove cutting platform which comprises a base, two supporting units, a linear moving mechanism and an assembling platform, the two supporting units are both arranged on the base, the two supporting units are symmetrically arranged about a defined axis, and each supporting unit is composed of a plurality of supports arranged at intervals in the length direction of the base; the linear moving mechanism is arranged on one supporting unit; the assembling platform is connected with the linear moving mechanism and used for assembling the flame cutting machine. Through the supporting effect of the two supporting units, it is guaranteed that the steel plate is vertically placed, grooves can be normally cut, and the edge of the steel plate is prevented from deforming. And the linear moving mechanism can improve the displacement precision of the assembly platform, so that the straightness of the steel plate can be ensured.