49 results about "Spindle positioning" patented technology

The invention relates to a gearbox no-load running-in test bed with a self-centering positioning and clamping device. The gearbox no-load running-in test bed is mainly composed of a driving device, a fixed end elastic clamping spindle positioning and clamping device, a movable end self-centering positioning and clamping device, a gearbox input end compression upright post device, a noise testing device and a test bed base, wherein the driving device is connected and mounted to the left end of the test bed base (1) via bolts, the fixed end elastic clamping spindle positioning and clamping device (4) is mounted on the left side of the test bed base (1), the movable end self-centering positioning and clamping device (9) is mounted at the right end of the test bed base (1), and the gearbox input end compression upright post device (8) is mounted on the test bed base (1) via a T-shaped bolt. The gearbox no-load running-in test bed solves a series of technical problems that the existing gearbox no-load running-in test bed is complex in dismantling and mounting, damages axle spindles and cannot meet high revolution speed and the like.

The invention discloses a device for grinding a lead screw precisely, which can improve the precision grinding quality and efficiency of the lead screw. The device comprises a base plate, a cushion block, a synchronous pulley, a spindle end cover, a spindle positioning seat, a spindle, a flange plate, a three-jaw self-centering chuck, a grinding magnetic pole group, a curved iron, a magnetic pole supporting seat, a workpiece support, a tailstock, an auxiliary servo motor, a shaft coupler, a first lead screw positioning bearing block, the lead screw, a supporting plate, a second lead screw positioning bearing block, a synchronous belt, a main servo deceleration motor, a sensor positioning seat, a limit sensor, two slideways, a lead screw nut and a sliding block. According to the device disclosed by the invention, the specifications of the magnetic poles in the grinding magnetic pole group can be replaced upon the type of the lead screw, the operation is simple and the cost is low. The device is flexibly contacted with the workpiece by a magnetic abrasive brush, so the surface of the workpiece cannot be scratched and damaged during precision grinding; after the surface of the lead screw is ground and polished, the surface roughness can be reduced and the smoothness can be increased; besides that, with the residual compressive stress on the surface, the fatigue strength and the service life of the surface can be improved.

The invention discloses an automatic control device for a doffer. A W-axis servo motor is used for the forward movement of the automatic doffer, and an X-axis servo motor, a Y-axis servo motor, and a Z-axis servo motor are used for the three-dimensional motion of a tube-pulling mechanism relative to the doffer; when a motion controller receives a synchronous signal sent by a tube-pulling detection laser sensor, the tube-pulling mechanism is controlled via the Y-axis servo motor to move relative to the travelling direction of the automatic doffer to a position facing a yarn tube with full yarns, and to keep relatively static, and then the yarn tube with the full yarns is pulled out and placed in a yarn-receiving basket of the automatic doffer by controlling the X-axis servo motor, the Z-axis servo motor and the tube-pulling mechanism; and when an empty spindle positioning signal sent by a tube-inserting detection laser sensor is received, a tube-inserting mechanism is communicated and controlled to insert an empty yarn tube on a corresponding empty spindle, so as to realize automatic tube-pulling and tube-inserting control on the doffer, thus improving the automation level and the production efficiency of the doffer.

The invention provides an improved structure of thread guide bar block of knitting machine, including a base, a cover, swing mechanism and tension mechanism. The base has a spindle positioning part; the cover with a through axle hole is connected to the base and cover it; the swing mechanism includes at least a spindle and a thread guide bar, while the spindle, with a screw hole and a locating slot transversely connecting this screw hole, is mounted between the spindle positioning part of base and the axle hole of cover; said thread guide bar is embedded in the locating slot of this spindle and locked with the screw hole by a bolt to depend and be located on the thread guide bar; said tension mechanism includes a connecter, extension spring, and tension adjusting knob, wherein, one end of the connecter links said spindle, and another one links said extension spring; said tension adjusting knob embedded into the side of base and cover connects extension spring; by this structure, quick and easy installment of this thread guide bar is reached, and the economic benefit is improved.

The invention discloses a spindle positioning mechanism of a horizontal boring machine. The mechanism comprises a controller, a spindle motor for driving a boring rod to rotate, a position induction part and a sensor, wherein the position induction part is arranged on the boring rod; the sensor is used for detecting the position induction part; the signal output end of the sensor is connected with the controller; and when the boring rod stops positively rotating and negatively rotates to a stop allowable position, the sensor detects the position induction part and outputs a signal to the controller, and the controller controls the spindle motor to stop. By the mechanism, the positioning accuracy and reliability of a spindle of the horizontal boring machine can be obviously improved. The invention also discloses the horizontal boring machine with the spindle positioning mechanism.

The invention relates to a lathe spindle unit, which comprises a spindle, a front bearing and a rear bearing which are arranged on the spindle, a guide sleeve and a spline part, wherein the spindle is arranged on a bearing seat, a top rod is arranged in the spindle, a collet sleeve is fixed at the front end of the top rod, a collet is arranged in the collet sleeve, an elastic part is arranged between the collet and the collet sleeve, the rear end of the spindle is provided with a spindle positioning device, and the spindle positioning device comprises a positioning wheel, a positioning pin and a positioning cylinder. According to the lathe spindle unit disclosed by the invention, the positioning precision of the spindle is improved, the output rate of inferior-quality products is reduced, the production efficiency is improved, the temperature rise is low, and the influence on the precision of a processed product is small.

The invention discloses an electric spindle assembling tool for pre-loading elastic loads. The electric spindle assembling tool comprises a base and a spindle positioning device, an auxiliary clampingdevice, a pre-loading device, a fixing device and a measuring device, wherein the base is used for bearing an electric spindle to be assembled; the spindle positioning device is arranged below the base in a movable connection mode, and is used for positioning the electric spindle; the two ends of the auxiliary clamping device are installed on the fixing device, and is used for preventing the electric spindle from tilting in the assembling process; the two ends of the pre-loading device are installed on the fixing device, and is used for applying an elastic load; the measuring device is arranged on the base, and is used for detecting the axial and radial jumping of the electric spindle. According to the electric spindle assembling tool for pre-loading elastic loads, the problem that the bearing is difficult to tighten after the bearing is cooled in a thermal assembling mode is solved, the positioning of the electric spindle is realized, so that the assembling precision and the assembling efficiency are improved, and the standardized operation can be realized.

The invention relates to a welding tool of breaker spindle connecting levers. The welding tool comprises a support seat, wherein at least two connecting lever positioning pieces are arranged on the support seat and are used for being in location fit with a spindle and positioning corresponding connecting levers on the spindle; each of the connecting lever positioning pieces comprises an axial positioning part and an angle positioning part; the axial positioning part is used for being matched with the space between corresponding connecting levers on the spindle; and the angle positioning part is used for being in location fit with corresponding connecting levers to enable the connecting levers to keep relative angles. The at least two connecting lever positioning pieces used for positioningcorresponding connecting levers on the spindle are arranged on the support seat; and the axial positioning part used for being matched with the space between corresponding connecting levers on the spindle and the angle positioning part used for being in location fit with corresponding connecting levers to enable the connecting levers to keep relative angles are arranged on each of the connectinglever positioning pieces, so that the demanded position and angle requirements when the connecting levers are welded on the spindle are ensured and the welding error is reduced.

The invention discloses a method used for replacing an escalator driving spindle. The method comprises following steps that an original driving spindle and an original spindle sleeve ring are dismounted from a truss, and an original spindle adapter part is retained on the truss; one side of a first tool is assembled on the original spindle adapter part; a second tool is assembled on the first tool; the second tool is fixed to the truss; the first tool and the original spindle adapter part are dismounted from the truss; the other side of the first tool is assembled on a new spindle adapter part; the first tool and the new spindle adapter part are jointly assembled in the second tool; the new spindle adapter part is fixed to the truss; the first tool and the second tool are dismounted from the truss; the new driving spindle and the new spindle sleeve ring are assembled on the new spindle adapter part; and according to the method, the first tool and the second tool can precisely transmitoriginal spindle positioning benchmark to a new spindle, the new driving spindle after replacement can be precisely assembled on the position, relative to the truss, of the original driving spindle.

The invention discloses improvement on a computer spindle positioning mechanism. The computer spindle positioning mechanism is installed between a computer main board and a liquid crystal screen board, and comprises a mandrel, a movable bracket and a fixed bracket, wherein the movable bracket is connected with the liquid crystal screen board; the fixed bracket is connected with the computer main board; one end of the mandrel is fixed with the fixed bracket; the other end of the mandrel stretches into and is tightly assembled inside a edge round after penetrating through the movable bracket; the edge round is made of rigid materials, and the end part of the edge round is fixed on the movable bracket and the side part of the edge round is provided with an opening groove in the axial direction; the edge round is fixed on the movable bracket through an auxiliary bracket; one end of the auxiliary bracket is welded and fixed at the side part of the edge round along the vertical direction, and is formed into a welding reinforcing part; the other end of the auxiliary bracket is fixed on the movable bracket by screws; and the opening groove is arranged on a side part of the welding reinforcing part on the edge round. With the adoption of the improvement, the effect that a laptop is lightly opened but heavily closed is achieved through a torsion force, and the laptop is also convenient to assemble.

The invention discloses a positioning device used for a numerical control tube bending machine. The numerical control tube bending machine comprises a machine tool spindle. The positioning device comprises a left flange plate, a right flange plate and a spring arranged between the left flange plate and the right flange plate. Either of the left flange plate and the right flange plate can overcome the elastic force of the spring to move axially relative to the other flange plate which is fixedly connected with the end face of the machine tool spindle of the numerical control tube bending machine. The space for relative movement of the left flange plate and the right flange plate is controlled within the range of 3-5 mm. The overall axial length of the positioning device is consistent with the length of the portion, removed from the numerical control tube bending machine, of the machine tool spindle. According to the positioning device used for the numerical control tube bending machine, an elastic buffer space is provided for rebounding of a tube in the tube feeding process of the numerical control tube bending machine by replacing a positioning mechanism on an original numerical control tube bending machine, and the rebounding problem of the tube in the tube feeding process is effectively solved accordingly; and the stability of an original equipment spindle positioning device is greatly promoted, the tube machining dimension precision is greatly improved, and the rejection rate is decreased to the maximum.

The invention relates to a cutter head spindle positioning device. The cutter head spindle positioning device is arranged in a cutter head accessory and comprises a pressing sleeve, a pressing cover, a base plate, an ejection rod, a bolt, a pin and a spring. The ejection rod and the pressing sleeve are fixed through a fastener. The base plate is arranged on the lower portion of the pressing sleeve. A limiting mechanism matched with the pressing cover is arranged on the pressing sleeve. The pressing cover is arranged on the end face of the cutter head accessory. The spring is arranged between the ejection rod and the pressing sleeve. One end of the pin is arranged on the ejection rod, and the other end of the pin is inserted into a bolt taper slot. When the accessory is in a working state, a ram applies pressure to the end face of the pressing sleeve when the accessory is taken, the pin located in the bolt taper slot drives the bolt to move to be away from a center shaft, and rotation of the center shaft is not influenced. When the accessory is in a non-working state, the pressing sleeve and the ejection rod are jacked, and the pin drives the bolt to extend to insert into the center shaft of the accessory, so that the center shaft is immovable, a key on the center shaft does not deviate, and the end face key of the center shaft can be accurately matched with a key slot of the accessory. The positioning device provided by the invention has the advantages of being simple and compact in structure, convenient to use and reliable.

A linear actuator includes a base having a positioning post and a motor fixed on one side of the base. A spindle positioning means includes a spindle, a seat and a fixing element. The spindle protrudes from the motor and penetrates the base. One side of the spindle away from the motor is formed with a free end. The seat includes a cylinder and an extension plate protruding outwards from the periphery of the cylinder. The extension plate is provided with a trough. The cylinder is connected to the free end of the spindle. The trough of the extension plate is located to correspond to the positioning post. The fixing element passes through the trough to fix the seat on the positioning post. Via this arrangement, the breakage of the spindle caused by a lateral force can be prevented efficiently.

The invention discloses a spindle positioning method based on depth target detection. The spindle positioning method comprises the steps: obtaining an RGB image containing a spindle; acquiring spindledepth information of the RGB image by adopting a depth information estimation method; adopting a key point detection method to obtain spindle head and tail end points of the RGB image; and accordingto the spindle depth information and the coordinates of the head and tail end points of the spindle, calculating two-dimensional rotation angle and vertical angle information of the spindle, and thenobtaining spatial position information of the spindle. The spindle positioning method based on depth target detection detects the depth information of the spindle in the RGB image to get rid of dependence on a depth camera, performs key point and category detection on the spindle in the image to assist calculation of spindle spatial position information, meanwhile, adopts multi-result output, adjusts and trains a network structure according to results, can find problems conveniently and timely, and finally can obtain the efficient and accurate positioning method for the spindle based on the neural network.