46results about "Worms" patented technology

The invention relates to a worm gear (10) for an auxiliary drive, in particular for a steering gear of a motor vehicle, comprising the following features: - a worm (100) with helical teeth designed as globoid teeth or globoid-like teeth, - a worm wheel (200) meshing with the worm (100), - the teeth of the worm (100) have teeth (130) in at least one of its two axial edge regions (112, 114) with a tooth height (H2) that is lower than the height (H1) of the other teeth of the worm (100). The invention further relates to a worm for such a worm gear and a manufacturing method for such a worm.

The application discloses a straight profile ring surface worm turning machining machine tool and a machining method, wherein the machine tool comprises a machine tool body, a driving assembly, a tool assembly and a control assembly; the driving assembly is arranged on the machine tool body; the tool assembly is arranged on the machine tool body and located on the side surface of the machine tool body, the tool assembly comprises a cutter head engaged with a worm blank, a plurality of turning groups are arranged on the cutter head, and the turning groups are fixed on the outer circumferential surface of the cutter head in the circumferential direction of the cutter head at equal intervals; and the control assembly is arranged on the machine tool body and electrically connected with the driving assembly and the tool assembly respectively. The machining method comprises connection and turning. The straight profile ring surface worm turning machining machine tool and the machining method are characterized in that a plurality of turning groups are arranged, the cutter head and the plurality of cutting tools form a worm gear type cutter similar to a worm gear, the cutter head is equivalent to a worm gear body, the cutting tools are equivalent to worm gear teeth, the worm gear type cutter is engaged with the worm blank to cut out worm teeth, and the machined worm is closer to a worm theoretical value.

The utility model discloses a kind of worm processing comprehensive machine tools, including bed, the upper surface both sides of bed are fixedly installed with two symmetrical distribution primary bearing seat, one number screw rod is rotatably connected between two primary bearing seats, the outer thread of one number screw rod is connected with horizontal slide, the output shaft of one number motor is fixedly connected to one end of one number screw rod, symmetrically distributed secondary bearing seat is fixedly installed in the front and back two ends of horizontal slide, two secondary bearing seats are rotatably connected with two number screw rod, two number screw rod and one number screw rod are perpendicularly arranged between each other, the outer thread of two number screw rod is connected with longitudinal slide, the output shaft of two number motor is fixedly connected to one end of two number screw rod, equipment seat is fixedly installed on the upper surface of longitudinal slide, the machine tool of the utility model whole structure is simple, floor area is small, manufacturing difficulty is low, effectively reduce the enterprise's early purchase and later use cost, with good use economy, suitable for small and micro manufacturing enterprises development use.

Manufacturing device for the manufacture of a rotor (1, 2) of a screw compressor or a workpiece with a helical profile, wherein the rotor (1, 2) or the workpiece with a helical profile has a number of helically extending profiles in the form of groove-shaped recesses (3, 4) on its outer circumference, wherein the rotor (1, 2) or the workpiece with a helical profile has a longitudinal axis (a), wherein the rotor (1, 2) or the workpiece with a helical profile is composed of at least two sections (5, 6, 7) which are directly adjacent to each other in the direction of the longitudinal axis (a), wherein the groove-shaped recesses (3, 4) of each section (5, 6, 7) have a constant pitch (S1, S2, S3), wherein the pitch of at least two sections (5, 6, 7) differs from each other, and wherein all sections (5, 6, 7) are designed to be received on a support shaft (8). are characterized by this,that the manufacturing device has a clamping device (10) for a section (5, 6, 7) which is designed for machining one section (5, 6, 7) at a time, wherein the clamping device (10) is provided with means (9) for receiving a section (5, 6, 7) in an angular position defined relative to the clamping device (10).

To provide a gear production method capable of producing a gear with high accuracy at short time.SOLUTION: A workpiece W is rotated around a first axis line A1, and a plurality of cutting edge 24a which is annularly arranged with a second axis line A2 which is at a twisted position to the first axis line A1 as a center, is rotated around the second axis line A2, and the workpiece W and the plurality of cutting edges 24a are moved relatively at a speed synchronized with a rotation speed of the workpiece W in a direction being parallel to the first axis line A1, and a spiral tooth groove is formed on the peripheral face of the workpiece W by the plurality of cutting edges 24a. In the production method of the gear 10, in a cross section which is at a right angle to the first axis line A1, a diameter DF of a rolling circle CF where a contour line OE of the cutting edge 24a and a target contour line OG of the gear 10 contact in rolling contact, is greater than a diameter DC of a tooth depth center circle CC.SELECTED DRAWING: Figure 4

The invention discloses a worm and gear grinding tooth surface forming method and a transmission error evaluation method considering tooth direction crowned shape modification, and the method comprises the steps: firstly obtaining a grinding wheel, a gear and grinding machining parameters, and building a surface model of a gear workpiece and the grinding wheel; comprising grinding wheel axial profile modeling, grinding wheel spiral curved surface modeling, gear end surface profile modeling and gear tooth surface modeling; the maximum tooth direction drum shape modification amount is obtained, and a shape modification curve is calculated according to the shape modification requirement; loading the modification curve into a grinding wheel fixed coordinate system; the grinding wheel rotating coordinate system is converted into a gear rotating coordinate system through coordinate transformation; information of the grinding wheel rotating coordinate system is transmitted to the gear, generation operation is conducted on the surface of the gear, and the tooth surface morphology of the gear is obtained; and finally carrying out distortion calculation on the tooth surface of the gear. According to the method, the influence of tooth direction crowned shape modification can be considered when the continuous generating grinding tooth surface generation model is constructed, so that accurate calculation and control of tooth surface morphology are realized.

The invention provides an analogy simplified analysis method and device for a worm grinding wheel grinding gear and a medium, belongs to the field of grinding machining, deduces and calculates a single-time grinding material removal area of a specific tooth surface through analysis of movement and contact behaviors on a middle plane, and calculates a single-time grinding material removal area of the specific tooth surface on the basis of a material removal rate equivalent principle. The worm grinding wheel gear grinding process is equivalently simplified into plane grinding. According to the method, equivalence of movement and contact behaviors in the grinding process is considered, grinding force and thermal effect equivalent analysis is achieved based on the material removal rate equivalent principle, and obtained equivalent plane grinding process parameters directly reflect the grinding behavior, grinding force and thermal characteristics of a worm grinding wheel grinding gear; the complex worm grinding wheel gear grinding process can be subjected to equivalent simplified research on a plane grinding platform, the experiment cost is reduced, experiment result analysis is simplified, and optimization analysis of worm grinding wheel gear grinding process parameters is facilitated.

The invention relates to the field of worm machining, in particular to a spindle mechanism for an enveloping surface worm rotary milling machine, which comprises a stand column, a first sliding seat is slidably connected to the stand column, a supporting seat is rotatably connected to the first sliding seat, a second sliding seat is slidably connected to the supporting seat, and a jacking mechanism is fixed at the front end of the second sliding seat. A cutting blade is arranged on the left side of a workpiece, a clamping-rotating mechanism is fixed to the rear end of the cutting blade, a supporting block is arranged in the middle of the cutting blade, and an arc-shaped groove is formed in the supporting block. Under the conditions of large cutting output, large cutting depth and large cutting force, jumping and deformation of the workpiece are well prevented, the stability of the workpiece is guaranteed, and finally the worm machining precision is greatly improved.

The invention discloses a ball worm milling and grinding compound machine which comprises a machine body base, a first longitudinal shaft, a rotary table, a transverse shaft and a second longitudinal shaft, the rotary table is longitudinally and slidably connected with the machine body base through the first longitudinal shaft, and the second longitudinal shaft is transversely and slidably connected with the rotary table through the transverse shaft. The stable mechanism is used for enabling the ball worm to be cut to rotate stably, the tool spindle is arranged at one end of the second longitudinal shaft, a spherical tool used for cutting the ball worm is arranged at the lower end of the tool spindle, and the spherical tool is arranged above the ball worm to be cut. The stabilizing mechanism is fixed to the upper end face of the machine body base. A real arc track can be used for machining the ball worm, and the precision of the ball worm is greatly improved.

The present invention relates to an apparatus and a method for machining a worm shaft of a double enveloping worm gear composed of a double enveloping worm shaft and a worm wheel, and enables X-axis movement of the worm shaft, Y-axis and Z-axis movements of a worm machining cutter, A-axis rotation of the worm shaft, C-axis rotation of the cutter, and B-axis tilting of a saddle on which the cutter is provided, and thus can facilitate worm shaft machining.

The invention relates to a worm gear drive (10) for an auxiliary drive, in particular a steering mechanism of a motor vehicle, comprising the following features: a worm (100) having a helical toothing which is designed as a spherical toothing or an approximately spherical toothing; a worm gear (200) engaged with the worm (100) in a meshing manner; the toothing of the worm (100) has a tooth (130) in at least one of the two axial edge regions (112, 114) thereof, the tooth height (H2) of which is smaller than the tooth height (H1) of the other teeth of the worm (100). The invention further relates to a worm for such a worm gear, and to a method for producing such a worm.

The application relates to the technical field of feeding and discharging devices, in particular to a device for automatically feeding and discharging workpieces, which comprises a box body, further comprises a limiting mechanism, the limiting mechanism is provided with at least two groups and is respectively used for limiting and positioning processed workpieces and unprocessed workpieces, and the limiting mechanism is slidingly connected to the upper end of the box body; the limiting mechanism comprises a bearing table, a chuck and a clamping rod, the bearing table is slidingly connected with the box body, the chuck is rotationally connected with the bearing table, the bearing table is provided with a first guide hole, the chuck is provided with a second guide hole, the first guide hole and the second guide hole are distributed in a cross mode, the clamping rod is arranged at the intersection between the first guide hole and the second guide hole, the clamping rod is distributed in a plurality of intervals around the bearing table, the first guide hole and the second guide hole are each provided with a plurality of clamping rods in correspondence, and the chuck is connected with a driving assembly. The application has the effects of reducing the labor intensity of workers and increasing the feeding and discharging efficiency of workpieces.

The invention relates to the technical field of gear grinding machines, and discloses a numerical control worm grinding wheel gear grinding machine and a using method thereof.The gear grinding machine comprises a shell, a cabinet door is installed on the side face of the shell in a sliding mode, a bottom plate is fixedly installed in the shell, a lifting plate is arranged on the bottom plate, and a grinding wheel driven by a motor is arranged on the lifting plate; a cooling pipe is fixedly installed on the lifting plate, an installation clamping base used for clamping a workpiece is arranged on the bottom plate, and a plurality of sets of water falling grooves located in the side face of the installation clamping base are formed in the bottom plate. A cavity is formed below the bottom plate, and a guide plate used for receiving falling cooling liquid in the water falling groove is fixedly installed on the bottom plate. The device has the beneficial effects that after the flow speed is increased, cooling liquid flows on the rotating plate in a thin-layer state, so that scrap iron in the cooling liquid is closer to the rotating plate and is more easily adsorbed and fixed by a magnet, the removal effect of the scrap iron is improved, and the recovery efficiency of the cooling liquid is guaranteed.

According to the worm tooth surface machining and compensating method, the worm tooth surface comprises a meshing-in section tooth surface, a meshing section tooth surface, a transition section tooth surface and a non-meshing section tooth surface which are sequentially and continuously arranged, a meshing-in grinding stage is used for grinding the meshing section tooth surface, a meshing grinding stage is used for grinding the meshing section tooth surface, the transition section tooth surface is used for grinding the transition section tooth surface, and the non-meshing section tooth surface is used for grinding the non-meshing section tooth surface. The non-meshing grinding stage is used for grinding the tooth surface of the non-meshing section, errors caused by abrasion of the grinding head and manufacturing of the worm gear are compensated in all the grinding stages, and therefore the manufacturing precision of the tooth surface of the worm and the meshing precision of the worm gear and the worm are improved.

The invention discloses an offset worm face gear for a speed reducer and a machining method, and relates to a high-speed precise gear transmission device, in particular to the technical field of gear machining. Worm machining equipment and end face gear machining equipment are adopted for machining, and the end face gear machining equipment comprises a forming unit used for machining an end face gear and a storage unit used for positioning and storing the end face gear before and after forming. The forming unit comprises a supporting mechanism, a first positioning mechanism and a forming mechanism; the first positioning mechanism and the forming mechanism are arranged at the two ends of the supporting mechanism correspondingly, the material storage unit comprises a driving mechanism and a second positioning mechanism, the second positioning mechanism is installed on the driving mechanism, and the driving mechanism drives the second positioning mechanism to achieve positioning and position adjustment of the end face gear before and after forming; the cooperation of the worm and the end face gear can meet the requirement for the high transmission ratio of the staggered shaft of the speed reducer, efficient machining of the end face gear is facilitated, and the machining cost is reduced while the efficiency is improved.

The application discloses a worm and gear grinding device, and relates to the technical field of worm and gear grinding devices, which comprises a chassis, a rack assembly, a lifting assembly, a positioning assembly and a grinding force control assembly. The rack assembly is installed on the chassis, the lifting assembly and the positioning assembly are both installed on the rack assembly, the lifting assembly is used for driving the worm to lift relative to the worm gear, the positioning assembly is used for positioning the worm gear, the worm gear is engaged with the worm, the worm can rotate, the grinding force control assembly is installed on the positioning assembly, and the grinding force control assembly is used for controlling the size of the grinding force between the worm gear and the worm. The application can control and stabilize the grinding force, and realizes efficient and precise grinding of the worm and gear.

The invention discloses an axial double-arc tooth spiroid worm pair and a manufacturing method, and belongs to the technical field of gear transmission, and the manufacturing method comprises the following steps: S1, adopting a double-arc edge forming tool, and machining to form a spiroid worm helical surface with two sections of tangent arc tooth profiles under a preset fixed connection coordinate system through composite relative motion of the tool and a spiroid worm blank; s2, a conical hob which is in conjugate matching with the helical surface of the spiroid worm is adopted to perform multi-motion collaborative hobbing machining on the blank of the spiroid worm gear, and a double-arc tooth surface is generated; and S3, the double-arc tooth bevel worm and the double-arc bevel worm gear are assembled, and the axial double-arc tooth bevel worm pair in meshing transmission is formed. The double-arc tooth profile design is adopted, and the special double-arc blade forming tool is used for machining, so that the thread meshing length of the spiroid worm accounts for more than 95% of the total length, and the meshing contact ratio is improved; the coverage rate of the tooth surface contact area of the bevel worm gear reaches 90% or above, instantaneous contact lines are evenly distributed and are not crossed, the tooth surface contact stress is reduced, and the transmission stability and the heavy load bearing capacity are improved.

A manufacturing method of a gear includes: rotating a rod-shaped workpiece around a first axis; rotating a tool having a cutting edge around a second axis at a twisted position with respect to the first axis. In a plane perpendicular to the first axis, the workpiece is rotated around the first axis and the workpiece and the tool are relatively moved in the direction parallel to the first axis at the speed synchronized with the rotation speed of the workpiece such that a contour line of the cutting edge of the tool is in rolling contact with a target contour line, which is a contour line of the spiral tooth groove to be formed, at a predetermined point of the target contour line or an extension line of the target contour line without slipping, and rotates while sliding with respect to the target contour line.

This invention discloses a simple auxiliary tool for testing worm gears on a conventional lathe. It includes a movable seat, a fixed seat, and a fixed shaft. The fixed seat is fixedly mounted on the tool holder of the conventional lathe. One end of the movable seat is movably mounted on the fixed seat and can be secured by a tension bolt. The other end of the movable seat is fixedly mounted on the fixed shaft, and the worm gear is sleeved on the fixed shaft via a bearing. The movable seat is engraved with a scale indicating the rotation angle, and the fixed seat has an indicator mark at the corresponding scale position. The worm gear is mounted on the lathe's main axis, ensuring free rotation. The worm gear is mounted on the simple auxiliary tool, allowing free rotation. The simple auxiliary tool allows for fine-tuning of the angle and height to ensure the correct installation position of the worm gear and worm and the visibility of the fine-tuning angle. This invention has a simple structure, good manufacturability, and convenient operation, and has certain practical value.

The invention discloses a worm and gear grinding tooth surface forming method and a transmission error evaluation method considering multi-head grinding wheel base pitch errors, and the method comprises the steps: firstly obtaining parameters such as a gear, a grinding wheel, machining and multi-head grinding wheel base pitch errors, defining the base pitch errors, building a grinding wheel surface model considering the errors, and building a standard involute gear model; then the grinding wheel rotating coordinate system is sequentially converted into a gear rotating coordinate system through coordinate transformation, tooth surface generation operation is conducted, and the tooth surface morphology is obtained; and finally, carrying out fast Fourier transform analysis on the tooth surface ripples, extracting tooth surface features and evaluating the ghost frequency noise risk. According to the method, the influence of the base pitch error of the multi-head grinding wheel can be accurately considered in the tooth surface generation process, tooth surface morphology prediction and howling risk analysis are achieved, and high universality and engineering application value are achieved.

The invention discloses a method for machining a special modulus worm based on transformation of the transmission ratio of a general lathe, and provides an innovative scheme for achieving modulus adaptation by adjusting a change gear box gear combination aiming at the technical problem that a non-integer modulus worm cannot be machined by the general lathe in the last century 70. The core of the method is that the method further expands the machining range of the lathe to the modulus interval of 5.5-7.5, the method is suitable for transformation of C620, C630 and C640 series equipment, special equipment does not need to be purchased, and the transformation cost of a single machine is lower than 200 yuan (according to the price of 1970). The embodiment shows that the transformed lathe can support multi-modulus machining (such as switching between 6.5 modulus and 4.5 modulus) at the same time, and a low-cost solution of'hardware multiplexing + parameter reconstruction 'is provided for regeneration of old equipment. The technology breaks through the manufacturing bottleneck of industrial self-defense equipment in a special period, and forms an equipment transformation methodology system.

This invention provides a machining method for obtaining uniform surface machining accuracy of a variable pitch screw rotor, comprising the following steps: 1) Dividing the end face profile of the rotor into an involute, addendum circle, epicycloid, and dedendum circle; 2) Dividing one of the involute, addendum circle, epicycloid, and dedendum circle into N equal segments, with the connection point between each segment being the tool point; the line connecting the tool point and the origin is the extreme diameter L, and the angle between the extreme diameter L and the coordinate axis is θ; 3) For each toolpath, the tool point is used as the entry point, and the workpiece is rotated by an angle θ so that the extreme diameter is parallel to the coordinate axis; 4) The tool rotates along a direction parallel to the coordinate axis from one end of the workpiece to the other end; 5) After the tool is lifted to the outside of the workpiece, it moves to the cutting start end, and steps 1-4 are repeated until one of the involute, addendum circle, epicycloid, and dedendum circle is machined; 6) Steps 1-5 are repeated until all the involute, addendum circle, epicycloid, and dedendum circle are machined.

The present invention relates to an apparatus and a method for machining a worm shaft of a double enveloping worm gear composed of a double enveloping worm shaft and a worm wheel, and enables X-axis movement of the worm shaft, Y-axis and Z-axis movements of a worm machining cutter, A-axis rotation of the worm shaft, C-axis rotation of the cutter, and B-axis tilting of a saddle on which the cutter is provided, and thus can facilitate worm shaft machining.

The present application relates to the technical field of robot grinding machine, especially to a torus secondary envelope worm grinding machine, comprising: a marble casting structure bed, a work shaft direct drive mechanism and a grinding wheel driving mechanism, the output end of the grinding wheel driving mechanism is installed with a grinding wheel, and one side of the work shaft direct drive mechanism is installed with a grinding wheel dressing mechanism; the present application adopts a marble bed matched with a linear motor, a torque motor direct drive and a grating ruler closed loop control, greatly improves the equipment stability and positioning accuracy, simultaneously breaks through the limitation of "B axis rotation center and actual torus center fixed connection" of market equipment, constructs a virtual torus center system through real-time linkage of X axis, Z axis and B axis, only needs to input torus size parameters on the numerical control controller interface, the system can automatically solve the compensation displacement, dynamically simulates the torus center of any size, does not need to replace hardware components, realizes the rapid change processing of full specification torus workpieces.

The invention provides a gear manufacturing method capable of shortening an incompletely machined part. A method for manufacturing a gear (30) includes rotating a rod-shaped workpiece (W) about a first axis (A1), and rotating a tool (20) provided with a cutting edge (201) on an outer peripheral portion about a second axis (A2) positioned at a position twisted with respect to the first axis (A1). A spiral tooth groove (301) is formed on the outer peripheral surface of the workpiece (W) by a cutting edge (201) of the tool (20) while relatively moving the workpiece (W) and the tool (20) in a direction parallel to the first axis (A1) at a speed synchronized with the rotational speed of the workpiece (W), in a cross section perpendicular to the first axis (A1), the diameter (DF) of a rolling circle (CF) in which the contour line (OE) of the tool (20) is in rolling contact with a target contour line of the gear (30) or an extension line (OG) thereof is at least one time the diameter (DT) of an addendum circle (CT).

The present application relates to the field of worm processing, especially to a main shaft mechanism for envelope torus worm rotary milling machine, including a column, the first sliding seat is slidably connected on the column, the supporting seat is rotatably connected on the first sliding seat, the second sliding seat is slidably connected on the supporting seat, the front end of the second sliding seat is fixed with the clamping-rotating mechanism, the middle position is provided with the supporting block, the arc-shaped groove is arranged on the supporting block, the supporting block on the right side of the workpiece is well positioned and supported during the cutting process of the cutting blade against the left side of the workpiece, the workpiece is well prevented from jumping and deformation under the conditions of large cutting amount, deep cutting depth and large cutting force, the stability of the workpiece is ensured, and the precision of worm processing is greatly improved.

The utility model discloses a worm numerical control machining lathe which comprises a lathe body, a machining device is arranged on the lathe body, the machining device comprises a fixing block, a cutter block and a sliding seat, the fixing block is installed on the sliding seat, the cutter block is installed in the fixing block, a fast clamping device is arranged on the fixing block, and the fast clamping device comprises a clamping sleeve, a clamping rod, a sliding groove, a clamping block and a sliding groove. The sliding groove and the sliding groove are formed in the inner side of the clamping sleeve, the clamping block is connected to the outer side of the clamping rod, a reinforcing mechanism is arranged on the outer side of the clamping sleeve and comprises a matching sleeve, a longitudinal groove, transverse grooves, an adaptive rod, a spring, a sliding block, an adaptive groove and a reset spring, the transverse grooves are connected to the two ends of the longitudinal groove, and one end of the adaptive rod is connected with the outer wall of the clamping sleeve through the reset spring. The spring is connected to one side of the sliding block, the sliding block is connected to the inner side of the matching sleeve, and the adaptive groove is formed in the side wall of the clamping rod. According to the device, the production efficiency is improved, the maintenance cost is reduced, and the machining quality and long-term operation of equipment are ensured.

The invention relates to a method for gear machining of a workpiece, in which a hobbing of the workpiece is carried out to produce a gear geometry of the workpiece, in which the workpiece is subjected to gear machining by gear skiving in addition to the hobbing.

A fixture device for machining Niemann worm gears using seven-axis five-linkage CNC milling includes a fixture support friction-reducing disc. An oil spraying lubrication assembly is floatingly and fixedly mounted on the upper surface of the fixture support friction-reducing disc. The lower surface of the oil spraying plate has multiple through holes. A clamping assembly is fitted onto the fixture support friction-reducing disc through these through holes, facilitating high-speed rotation around the central axis following the friction-reducing disc. A lifting column assembly is fixed to the oil spraying lubrication assembly, a tailstock support assembly is fixed to the lifting column assembly, and a circumferential limiting assembly for the oil spraying plate is fixed to the ground inside the machine tool's working chamber. This invention is used for milling Niemann series worm gears on a seven-axis five-linkage CNC machine tool, ensuring smooth side milling and preventing worm gear deformation. The adjustable length of the lifting column assembly and tailstock support assembly allows the fixture to adapt to the machining of worm gears of various geometric sizes and shapes, highlighting the adaptability and versatility of the fixture for vertical milling of worm gears.

The invention discloses a multi-degree-of-freedom numerical control enveloping worm grinding machine, and relates to the technical field of worm machining, the multi-degree-of-freedom numerical control enveloping worm grinding machine comprises a clamping mechanism, an adjusting mechanism for adjusting a grinding device is arranged on the side face of the clamping mechanism, and a grinding mechanism for grinding a worm is arranged on the adjusting mechanism. According to the worm grinding machine, the outer surface of the grinding wheel used for grinding worms is trimmed by arranging the trimming mechanism, the worms of different specifications can be ground conveniently, the grinding wheel is prevented from being replaced, and the machining efficiency is improved; the two grinding wheels are switched, the threads of the worm and the rod portion of the worm can be conveniently ground, the transmission gear is arranged to drive the two diamond wheels to move, the two diamond wheels are made to be close to each other, and grinding wheels of different sizes can be conveniently trimmed.