59 results about "Lathe center" patented technology

A lathe used for turning long rod class of parts comprises a lathe body, a cutter bar, a cutter bar clamping device, a clamping jaw type lathe center clamping device, a chuck and a motor, wherein the motor, the clamping jaw type lathe center clamping device and the cutter bar clamping device are fixed to the lathe body, and a main shaft of the motor is fixedly connected with the chuck; and the cutter bar clamping device comprises a horizontally arranged base, a cutter bar and a cutter bar sleeve, a positioning block protruding downwards out of the lower surface of the base is embedded in the bottom of the base, the base is fixedly connected with the cutter bar sleeve through a support base, the cutter bar sleeve is of a cylindrical structure, the central line of the cutter bar sleeve is horizontally arranged in the left and right direction, and a cylindrical mounting cavity is arranged in the cutter bar sleeve in the axial direction. The device is high in processing and turning precision, great in stability, low in defective rate and accurate in centering.

The invention discloses a lathe center frame. A radial ball bearing is arranged in a slot at the middle of the front end of a clamping jaw which is used generally, and the radial ball bearing rotates around a workpiece under the action of a cutting force, thus abrasion of the clamping jaw is reduced. The invention has the advantages of prolonging the service life of a clamp and reducing the cost consumption through application.

This invention discloses thermoforming spoke technique and comprises steps: blanking, chamfering, rolling, welding, grinding, expanding, heating, forming, lathing center hole, punching screw hole, lathing surface and end face, trimming and packaging. It increases the utilization of steel material and economic benefit, decreases cost, enhances intensity of stretch-proofing and resistance to bending, and prolongs service life.

The invention discloses a lathe center. The lathe center comprises a plug screw, a spring, a Mohs taper, a mandrel center and an end face sharp tooth pusher dog; the plug screw is connected to the left end of the Mohs taper in a threaded manner, the end face sharp tooth pusher dog is connected to the right end of the Mohs taper in a threaded manner, and the diameter of the right end face of the end face sharp tooth pusher dog is 2 mm to 5 mm smaller than the diameter of a workpiece; sharp teeth are arranged on the end face of the end face sharp tooth pusher dog, and the mandrel center is arranged on an inner hole of the Mohs taper in a movable fit manner; and the spring is installed between the plug screw and a shaft shoulder of the mandrel center in a press fitting manner. By means of the lathe center, no-shutdown end face pulling is achieved, centering and pulling are combined, and the machining speed and quality are greatly improved.

The invention relates to a frock clamp used for turning a flange spigot of a complete machine motor which is assembled, comprising a fixed bushing with an inner hole; a key slot is opened on the wall of the inner hole at the socket joint end of the fixed bushing; the inner hole at the socket joint end is matched with the shaft extension of the motor to be turned; a center positioning hole which is coaxial with the inner hole of the bushing is arranged at the positioning end of the fixed bushing. The frock clamp uses the center positioning hole at the positioning end of the bushing instead of a center hole at the shaft extension end of the motor, uses keys to circumferentially fix the shaft extension of the motor with the key slot on the inner hole of the bushing and carries out turning on the flange spigot of the complete machine through fit of front and rear lathe centers with the center positioning hole of the bushing and a center hole at the non-shaft extension end of the motor. The frock clamp has the advantages of simple structure, reasonable design, low cost, easy operation, accurate positioning, high production efficiency and high processing precision of workpieces.

The invention discloses a center frame of a horizontal lathe, which includes a base, an inner ring is arranged on the base, an outer ring is arranged on the inner ring, and a concave hole is arranged at the junction of the inner ring and the outer ring Groove, the inner ring and the outer ring are provided with a feeding device; the device has a simple design and structure, is convenient to use, and improves the service life. This device is suitable for processing slender shafts and cylindrical workpieces on a horizontal lathe.

The invention relates to a processing tooling for an external circle of a tube stock. The processing tooling comprises a disc and a stopping iron welded with the disc, wherein a cylinder and stretching rods are arranged in the disc; a plurality of through holes, through which the stretching rods can stretch, are uniformly distributed in a side wall of the disc; a central hole matched with the taper degree of the lathe center is formed in the center of the stopping iron; a lug boss is arranged on the middle part of the stopping iron; the lug boss is in a circle shape which is matched with the inner diameter of a centrifugal cast iron pipe; the quantity of the stretching rods is at least three and the original long baffle is changed into a circular baffle, so that the supporting force of the baffle for the end face of the centrifugal cast iron pipe is increased. An adjusting bolt is changed into a pneumatic stretching rod, so that the manual operation is reduced and the working efficiency is increased.

The invention relates to a centre device with various shapes heads capable of being quickly replaced. The center device comprises a lathe center handle and a head replacing part, wherein the lathe center handle comprises a handle part and a head part formed at the top end of the handle part, the head part is provided with a containing part, the head replacing part comprises an abutting seat part and a mounting part arranged at the top end of the abutting seat part, and the head replacing part is detachably arranged at the containing part in a concave-convex corresponding manner by virtue of the mounting part; according to the centre device, the head replacing part with multiple different shapes can be replaced on the lathe center handle, by only unscrewing a locking piece and passing through a sliding hole and a through hole to lock and loosen the head replacing part in a rotating manner without completely removing the locking piece, the head replacing part can be used for processed objects of different shapes, and the aims of high applicability, low cost and quickly replacing are achieved.

The invention discloses a lathe center frame and a use method thereof and belongs to the technical field of lathe equipment. The lathe center frame comprises a frame base, a bearing, an inner sleeve and compression screws for a machined workpiece, wherein the frame base comprises a base fixed to a lathe guide rail and an outer sleeve; the outer sleeve is fixed to the upper portion of the base; the inner sleeve extends into the middle of the outer sleeve; the inner sleeve and the outer sleeve are rotationally connected through the bearing; the front end of the inner sleeve extends out of the front end face of the outer sleeve; the sleeve wall of the front end of the inner sleeve is provided with at least three threaded holes in the radial direction; the threaded holes are evenly distributed in the circumference of the sleeve wall; the compression screws for the machined workpiece are installed inside the threaded holes. The use method of the lathe center frame comprises the steps that the compression screws are fastened to compress the machined workpiece, circular runout of the machine workpiece is detected through a dial indicator until the circular runout is the minimum, and the compression screws are fastened finally. The lathe center frame is especially suitable for machining thin and long workpieces, the rigidity of the workpieces is increased, deformation is reduced, the machining accuracy is improved, the working procedures are reduced, and the work efficiency is improved.

The invention discloses a lathe center frame auxiliary clamping mechanism which comprises a clamping sleeve (1) and a rolling bearing (2), wherein a sleeve hole (3) used for installation of a machined moving bolt in a sleeved mode is formed in the clamping sleeve (1), the clamping sleeve (1) is at least provided with two pressing rods (6) with end faces pressing the outer circumferential face of the machined moving bolt, the rolling bearing (2) is axially installed on the clamping sleeve (1) in a limited mode, and the inner ring of the rolling bearing (2) is closely matched with the outer circumferential face of the clamping sleeve (1). The lathe center frame auxiliary clamping mechanism not only can support the machined moving bolt, but also enables the machined moving bolt to rotate, and can effectively guarantee lathing of the machined moving bolt.

The invention discloses a wood lathe center. The wood lathe center is characterized in that the wood lathe center comprises a center handle and a center head connected to the center handle, the center head comprises a fixed ring and a fixed pointed end arranged in the center of the fixed ring and the edge of the fixed ring has a zigzag shape. Compared with the existing wood lathe center, the wood lathe center provided by the invention has the advantage that the fixed ring can completely fix a workpiece and does not easily fall off and slide down.

The invention discloses a self-centering lathe center frame. The self-centering lathe center frame comprises a shell, a center arm and two supporting arms; the front end of the center arm and the front ends of the two supporting arms are each provided with a supporting wheel set; the center arm is a cylinder body of an oil cylinder hidden in the shell, and a safety valve is assembled at the end ofa piston rod of the oil cylinder and installed on the rear end face of the shell; roller sets are symmetrically installed on the upper side face and the lower side face of the center arm, and outwards-protruding arc-shaped rolling faces in rolling contact fit with the roller sets are formed on the rear sections of the supporting arms; and the center arm moves forwards under the action of hydraulic pressure, meanwhile, the two supporting arms are pushed to synchronously move and fold through rolling force application of the roller sets to control a workpiece in a circle formed by supporting points of the three supporting wheel sets, and a return plate used for driving the supporting arms to be opened and reset when the center arm retreats is hinged to the center arm. According to the self-centering lathe center frame, by the adoption of the design of the built-in oil cylinder, the boundary dimension of the center frame is reduced, the clamping range is enlarged, reliability is high, using performance is good, and the self-centering lathe center frame is suitable for a machine tool with a small installation space and a large clamping range.

The invention discloses a lathe center, which comprises an assembly shaft, a jacking head and a gland, wherein the jacking head is a cone, the top of the jacking head is a flat end face, one end of the assembly shaft is inserted into a step hole at the large end of the jacking head and connected with the jacking head through a bearing, the other end of the assembly shaft is arranged on a lathe, and the gland is arranged at the outer side of the bearing; as a preferably scheme, the jacking head is connected with the assembly shaft through two bearings arranged in interval; and the step hole in the jacking head is a through hole. The lathe center is convenient for installation and easy to realize and has strong generality; and the general center of the lathe is replaced by using the conical jacking head with planar top, the jacking head is connected with the assembly shaft through the two bearings, and the jacking head is matched with a chuck of the lathe, so that effective clamping of steel pipes of multiple specification is realized, and the production efficiency and the product quality are improved.

The invention discloses a positioning fixture for lathe machining. The positioning fixture includes an aligning positioning rod which includes a positioning rod and an adjusting rod, wherein the positioning rod and the adjusting rod are connected. The positioning rod is connected to a three-jaw chuck of a lathe. A side at an end portion of the adjusting rod is provided with a lathe center. The adjusting rod of the aligning positioning rod has one end connected to the positioning rod and the other end which has a side wall shaped in a conical surface. The adjusting rod is sleeved with a rotary positioning disc. An inner end surface of the rotary positioning disc and the positioning rod are provided therebetween with a locking nut which sleeves the adjusting rod. The outer end surface of the rotary positioning disc is provided thereon with a magnet which attracts a workpiece. According to the invention, with the structure, the positioning fixture has the following advantages: 1. the rotation of the rotary positioning disc drives the workpiece to displace on the conical surface of the adjusting rod, the center of the workpiece is adjusted to a rotation center of the lathe, and accurate positioning is performed on annular parts; 2. the rotary positioning disc is locked by the locknut so as to achieve axial positioning and radial positioning of the workpiece and prevent part deformation caused by the positioning of the three-jaw chuck of the lathe, and thus parts are convenient to machine.

A tailstock includes a main body, a lathe center unit arranged in a hollow hole of the main body, a sliding base coupled with the main body and having a slider configured at a side thereof for pairing a slide rail, and a clamping unit configured in the sliding base. The clamping unit for increasing clamping force of the tailstock further includes a connection plate having at least one positioning hole to connect the main body, at least one hydraulic rod bridging the slider and the main body, a plurality of loading devices ring-set about the hydraulic rod, and a plurality of sleeves ring-set with the corresponding loading devices.

The invention discloses a roller lathe center frame which comprises an annular frame. An inner ring of the annular frame is provided with three supporting rods which are telescopic in the radial direction in a trisection mode. The roller lathe center frame further comprises a base. The base is fixedly connected with the lower end face of the annular frame. A reinforcement rib is fixedly connected between the base and the annular frame. By means of a groove of the base and the reinforcement rib of the roller lathe center frame, the load bearing capacity of the base is ensured and meanwhile, the weight of the base is reduced. Meanwhile, the center frame and a lathe can be conveniently detached and installed.

The invention discloses a lengthened roller type lathe center frame. The lengthened roller type lathe center frame comprises a center arm arranged in an installation base and two supporting arms hinged to the installation base, and the front end of the center arm and the front ends of the supporting arms are each provided with a roller; the rollers are lengthened rollers, lengthened roller supports are installed at the front end of the center arm and the front ends of the supporting arms, and the lengthened rollers are installed in the lengthened roller supports; the central arm is a cylinderbody of an oil cylinder hidden in the installation base, a safety valve is installed on the rear end surface of the installation base, and a piston rod of the oil cylinder is connected with the safetyvalve; and the two supporting arms are symmetrically arranged, pressure-bearing wheels are installed at the rear ends of the supporting arms, wedge-shaped plates are installed on the upper side faceand the lower side face of the center arm, thrust slopes in rolling contact with the pressure-bearing wheels are formed on the wedge-shaped plates, the center arm pushes the pressure-bearing wheels through the thrust slopes to drive the two supporting arms to move synchronously to be closed while advancing under the hydraulic action, so that a workpiece is controlled in a circle formed by supporting points of the three rollers, and return plates used for pulling the supporting arms to be opened and reset are installed on the wedge-shaped plates.

The invention discloses a three-pin fork machining process. The machining process comprises the following steps that 1) an initially machined three-pin fork is transversely placed on a lathe, a positioning tool is arranged at one end, away from a handle part, of the three-pin fork, the positioning tool comprises a containing part with a containing cavity, wherein a transmission mechanism is arranged inside the containing cavity, a positioning rib is arranged on the inner wall of the containing cavity, the three-pin fork is inserted into the containing cavity of the containing part, and the position of the three-pin fork in the containing cavity is corrected through the positioning rib; 2) the three-pin fork is clamped from the circumferential surface of the handle part of the three-pin fork bu using a first central frame; 3) a cutter head of the lathe is provided with a a center drill tool, a center drill is equipped with the the center drill tool, and a center hole is drilled in the end surface by using the center drill; 4) a lathe center extends into the center hole and abuts against the three-pin fork, and the first center frame is loosened; 5) the positioning tool drives the three-pin fork to rotate around an axis, and a turning tool is used for turning the outer peripheral surface of the handle part of the three-pin fork; and 6) after the turning is completed, the lathe center returns to an original position. According to the three-pin fork machining process, the precision of the machined three-pin fork is high, and the consistency is good.

The invention discloses an improved vertical lathe centering clamp comprising a powered chuck body (1), a central disk spring (2), a compressing head (3), a telescopic claw (4), a small chuck pulling claw (5), a small chuck pulling plate (6), a telescopic head (7), and a machine tool pull rod head (8); the powered chuck body (1) is fixed on a machine tool clamp base through bolts; the telescopic head (7) is connected with a machine tool hydraulic cylinder pull rod; the telescopic claw (4) is connected with the small chuck pulling claw (5); the small chuck pulling claw (5) is connected with the small chuck pulling plate (6); the small chuck pulling plate (6) is connected with a clamp radial sliding seat; the compressing head (3) is connected with the telescopic head (7); and the central disk spring (2) is installed inside the telescopic head. Being simple in center locating structure, and with most connectors of the original clamp being saved, the purpose of stabilizing the accuracy of the clamp can be achieved by the improved vertical lathe centering clamp; and the simplification of the spare parts of the clamp allows the maintenance of the clamp to be done with fewer people and allows the clamp to be easily restored.