73 results about "Gear (shape)" patented technology

The invention discloses a gear broaching process for a thin-wall internal spline shaft, and relates to the technical field of internal spline shaft machining. The gear broaching process specifically comprises the following steps that S1, firstly, a round steel material is selected for blanking, and the round steel material is cut into the size required by an internal spline shaft through cutting equipment according to the required workpiece size to form a workblank; and S2, rough turning is carried out on the workpiece, the cut workblank is polished through polishing equipment, after polishingis completed, the workpiece is clamped through a clamp, then rough machining is carried out on an inner hole, an outer circle and the length of the workpiece through a horizontal lathe, so that the workpiece is made to be close to the final shape and size, and 0.4mm - 1mm machining allowance is correspondingly reserved for the inner hole, the outer circle and the length of the workpiece after rough turning. According to the gear broaching process for the thin-wall internal spline shaft, the gear broaching process is adopted to replace a gear shaping process to machine an internal spline, theproduct machining precision is improved, the product quality is stabler, the product damage rate is reduced, the economic loss is reduced, and the loss of a cutter is small.

The invention discloses a method for manufacturing mechanical drive chain wheel by forging technology, which comprises the following steps: baiting, skinning, coating, heating, upsetting and extruding, annealing, ball blasting, parkerising, saponifying, gear shape cold finishing and finishing. In the method, the warm extrusion technology is adopted to carry out metal volume distribution, thus notonly overcoming waste of raw materials in the prior art, reducing manufacturing costs but also shortening production period and having stable manufacturing technique.

The invention provides a strong-impact-resistant back shock absorber, which comprises a shell, a center shaft, damping parts and a bearing joint, wherein the upper end and the lower end of the shell are each provided with a round shock absorption cavity for containing the damping parts; the damping parts are arranged in the shock absorption cavities; the two ends of the center shaft extend into the shock absorption cavities to be connected with the damping parts, and the bearing joint is connected to the center shaft and can slide along the center shaft and rotate around the center shaft; each of the damping parts comprises a quick release part, a metal elastic part, an end cover, a friction plate and a conical spring, wherein the quick release part is installed at the end of the center shaft, the metal elastic part is in a gear shape, a gap exists between the metal elastic part and the inner walls of the shock absorption cavities; the end cover is connected to the ends of the shock absorption cavities; the friction plate is hidden in the end cover and makes surface contact with the quick release part; and the conical spring is connected between the end cover and the friction plate in an abutting mode. The gear-shaped metal elastic part is adopted as elastic limiting to cause rigidity gradual change, and the impact amplification phenomenon of a traditional shock absorber is improved.

The gear dedendum bending fatigue durability testing device disclosed in the present invention includes a strain gauge attached to the tooth root of the gear to be tested and a pressing piece adapted to the shape of the gear to be tested. The pressing piece is pressed into the tooth groove of the gear to be tested. A silicone rubber pad is arranged between the pressure piece and the gear to be tested; a patch template fitted on the tooth surface of the gear to be tested is also included; the strain gauge is connected to the slip ring through a lead wire, and the slip ring is connected to a strain gauge through a wire. The testing method disclosed by the present invention includes seven steps of determining the maximum stress point area, making a patch template, making a pressing piece, sticking and protecting the strain gauge, calculating the sampling frequency, durability testing and data processing. The test method can accurately carry out the fatigue durability data of gear products, and provide a basis for the design and use of gear transmission devices; Convenient and accurate test results.

The invention discloses automatic test equipment and system for testing product performance. A control board card is placed above a conveyor belt, and when the conveyor belt conveys the control board card to a position between a clamping arm and a measuring arm, the conveyor belt stops, a driving wheel drives a transmission rod to rotate along with the driving wheel. A first bevel gear is connected with the transmission rod, and the first bevel gear rotates along with a driven wheel and drives a second bevel gear to rotate. Due to the fact that gear teeth in a straight gear shape are arranged on the outer side wall of the second bevel gear, racks at the two ends move in the opposite directions, the clamping arm and the measuring arm move close to each other until two electrode contacts make contact with the control board card and are powered on, the control board card is detected, and after detection is completed, the conveyor belt continues to operate to convey the control board card out. Through the structure, automatic detection can be conducted when an operator places the control board card at a fixed station.

The invention relates to a comprehensive demonstration instrument for demonstrating angular momentum conservation and rotational inertia. The comprehensive demonstration instrument is characterized by comprising a singlechip, a digging rope motor and a variable frequency driving motor, wherein the singlechip is used as the control center of the comprehensive demonstration instrument. The comprehensive demonstration instrument further comprises a support shaft, wherein a rotating arm which rotates along with the support shaft is arranged on the support shaft; heavy balls are sleeved at two sides of the rotating arm; the heavy balls are connected with an edge digging rope and are driven by the digging rope; the two heavy balls are pulled to synchronously move inwards / outwards along the rotating arm; the support shaft is connected with the center of an outer rotating disc below the support shaft; a clamping groove is formed below the outer rotating disc; the clamping groove is gear-shaped; the clamping groove is internally provided with an inner rotating disc; the inner rotating disc is fixedly connected with a clamping plate through a torsional spring; the clamping plate corresponds to the clamping groove; when the variable frequency driving motor is started, the inner rotating disc is driven by the variable frequency driving motor to rotate, the torsional spring deforms, the clamping plate is meshed with the clamping groove, the outer rotating disc is driven to rotate, and the outer rotating disc drives the support shaft to rotate; and when the variable frequency driving motor is stopped, the speed of the inner rotating disc is smaller than the speed of the outer rotating disc, the torsional spring resets, and the clamping plate is separated from the clamping groove.

A gear machining method includes: roughing a workpiece while causing a cylindrical hob cutter to rotate in synchronization with a rotation of the workpiece such that a cutting allowance remains; and finishing by cutting off the cutting allowance remaining on the workpiece on which the roughing has been performed during the roughing to form a desired gear shape by feeding a skiving cutter relatively to the workpiece in the rotation axis direction of the workpiece while causing the skiving cutter to rotate in synchronization with the rotation of the workpiece.

The invention discloses a tooth turning tool structure with a wear-resistant tool nose and a tool feeding method. A tooth turning tool is in a section gear shape and is provided with the tool nose and a tool body. The tool nose is fan-shaped and is made of a hard wear-resistant material. The tool body is made of a material with good toughness, impact resistance and machinability, and the tool body is rigidly connected with the tool nose. The edge curve of the tool nose is a section of space curve conjugated with the tooth surface of a workpiece, the tool nose is fed alternately along the tooth surfaces on the two sides of a tooth groove of the gear-shaped workpiece by combining a generating method and a tangent method, and compared with a traditional tooth turning tool and a tool feeding method, the tool nose has the advantages of being resistant to abrasion, low in use cost, resistant to impact and capable of restraining vibration, different modification machining requirements on tooth surfaces on the two sides of the gear-shaped workpiece can be flexibly met, and the device is further suitable for finishing a honing wheel.

The invention discloses a pressure quenching die and technology for a large-diameter thin arc plate carburized gear, relates to the technical field of heat treatment pressure quenching dies and technologies, and solves the technical problems of heat treatment deformation and low production efficiency of an existing control gear. The pressure quenching die comprises a mandrel base, a blocking plate, a supporting plate, an outer ring supporting ring, a guide cone fixing screw, an outer pressing ring, an inner pressing ring, an inner hole die guide cone, an inner hole expanding die, a screw, a spring, a fixing ring, a guide cone reset spring, a hexagon socket cap screw, a standard elastic washer, an ejector rod and a ring spring. The gear is heated to the quenching temperature, the temperature is kept for a period of time, the gear is transferred from a heating furnace and is sleeved with the pressure quenching die by the aid of a special extraction assistive tool, a press is started, plane warping, limiting diameter, height size and the like are corrected under the combined action of the press and the die, a part meeting the finish machining requirement is obtained. The die has the characteristics of being convenient to operate, long in service life, good in gear shape correction effect and the like, and is worthy of application and popularization.

A gear cutting machine for gear cutting a workpiece (W) using a gear shaped cutter (17), by engaging and rotating the workpiece (W) that can rotate around a workpiece axis and a gear shaped cutter (17) that can rotate around a cutter axis, while cutting and feeding the gear shaped cutter (17), including:rough cutting at a cross axis angle to the cutter axis, then moving the cutter axis by moving a predetermined angle around the workpiece axis, and performing finish cutting such that the cutter axis has an angle with regard to the workpiece axis in a plane that includes the feeding axis direction and the cutting direction after moving.

The invention discloses a deformable wheel capable of climbing stairs. The wheel comprises an outer wheel hub and an inner wheel hub which are coaxially arranged and can relatively rotate; the outer edge of the outer wheel hub is evenly and fixedly provided with a plurality of fixed spokes, and wheel flanges are hinged to the two sides of the top of each fixed spoke respectively; every two adjacent wheel flanges are connected through a sliding groove and sliding pin structure; movable spokes the number of which is equal to that of the fixed spokes on the outer wheel hub are hinged to the innerwheel hub, and the other end of each movable spoke is connected with the two corresponding wheel flanges through the corresponding sliding groove and sliding pin structure. The inner wheel hub is controlled to rotate relative to the outer wheel hub, each movable spoke drives movable ends of the two corresponding wheel flanges to be folded or unfolded, all the wheel flanges can be changed into a pointed gear shape or a circular shape, and therefore the purpose of automatic conversion between the mode of walking on the ground and the mode of walking up and down stairs is achieved. The wheel hasthe advantages that the structure is compact, the strength is ensured, the stability is good, the functions are easy to achieve, the automation degree and followability are high, and the applicationrange is wide.

A roller screw drive linear actuator is characterized by comprising a screw (1), a screw gear (11), a roller (6), planet carriers (4 and 9), a nut (3), an external nut (7) and a lug (15). Pitch and number of internal thread of the nut (3) are equal to those of thread of the screw (1). Lead of the roller (6) is equal to that of the internal thread of the nut (3). The part of the internal thread of the external nut (7), meshing with the thread of the lug (15), is subjected to gear shaping for the left internal thread, and shaped teeth mesh with the external gear of the screw gear (11), while drive ratio of the shaped teeth is equal to that of the whole roller screw drive linear actuator. The roller screw drive linear actuator is simple in structure, stable in transmission, small in transmission clearance, high in transmission precision, low in noise, high in dynamic responsiveness and constant in transmission ratio and enables speed closed-loop control and displacement closed-loop control to be simpler.

The invention discloses an electrochemical machining device and method for an internally-oblique micro line segment gear. The electrochemical machining device comprises a power system, a PLC control system, an electrolyte circulating filtration system, a numerical control rotary table, a cathode system and a workpiece clamp. According to the method, a sheet-shaped cathode which is machined by a high-precision linear cutting machine and has the thickness of 1mm is used, and the gear outline shape on a tool cathode is obtained by the fact that a workpiece inner gear shape to be machined and formed is offset to the inner side by a machining gap delta in the radial direction; in the machining process, the tool cathode makes rotating movement around a shaft while being fed downwards in the radial direction, and workpieces are machined according to an electrochemical anodic dissolution principle; the spiral angle of an inner gear is guaranteed by the speed ratio of axial feeding and rotary feeding around the shaft, and when the spiral angle of the gear is changed, corresponding angle machining can be achieved through change of the speed ratio of the axial feeding and the rotating movement around the shaft. The electrochemical machining device and method are beneficial to improving the machining efficiency and the gear forming precision.

The invention discloses a three-arc harmonic gear shaper cutter, which belongs to the technical field of harmonic reducer gear processing cutters. The basic tooth profile of the cutter tooth is composed of three sequentially tangent circular arc segments; The radius of the upper arc segment is ρ 1 , the radius of the arc segment is ρ 2 and the radius ρ of the lower arc segment 3 ; Also discloses a tooth profile design method of a three-arc harmonic gear shaper cutter, which designs a three-arc tooth profile of a flexible spline and a three-arc tooth profile of a rigid spline, based on the obtained three-arc tooth profile of a rigid spline The circular arc tooth profile adopts the gear meshing kinematics method to obtain the theoretical conjugate tooth profile of section A, the theoretical conjugate tooth profile of section B and the theoretical conjugate tooth profile of section C; the upper arc section Ac1 and the lower section are obtained by arc fitting. The circular arc segment Ac3 and its related parameters; the middle circular arc segment Ac2 and its related parameters are obtained through the plane analytic geometry method; finally, the auxiliary parameters are determined according to the process requirements of the processed harmonic gear to achieve the three-arc harmonic The purpose of wave gear working tooth profile.