CN210208929U - Gear turning machine tool for processing face gear - Google Patents
Gear turning machine tool for processing face gear Download PDFInfo
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- CN210208929U CN210208929U CN201921123382.1U CN201921123382U CN210208929U CN 210208929 U CN210208929 U CN 210208929U CN 201921123382 U CN201921123382 U CN 201921123382U CN 210208929 U CN210208929 U CN 210208929U
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Abstract
The utility model relates to a face gear machining is with car tooth lathe, including corresponding the X axle, the three slip table that feeds of Y axle and Z axle, the Z axle feeds the slip table assembly on the X axle feeds the slip table, the Z axle is fed and is equipped with car tooth sword drive case on the slip table, it installs car tooth sword main shaft to rotate in the car tooth sword drive case, the Y axle is fed and is equipped with the work piece drive case on the slip table, it installs the work piece main shaft to rotate in the work piece drive case, Y axle slip table feeds with Z axle slip table differential compensation and orders about car tooth sword main shaft and remove in order to realize that the car tooth sword is along waiting to process face gear along the feeding of tooth line direction, X axle slip table feeds with Y axle slip table differential compensation and realizes that the car tooth sword is waiting to process face gear depth of tooth direction ascending feeding, Z axle feeds with the gyration axis of in good time adjustment car tooth sword and waiting to process face gear in the ascending offset distance of Z axle. The tooth profile of the face gear can be efficiently machined by utilizing the relative sliding of the gear turning cutter along the tooth surface of the face gear, and higher tooth surface machining precision is ensured.
Description
Technical Field
The utility model belongs to the technical field of face gear machining, concretely relates to face gear machining is with car tooth lathe.
Background
The face gear transmission is a novel gear transmission mode that a cylindrical gear is meshed with a conical gear, and due to the compact structure of the face gear transmission, the cylindrical gear meshed with the face gear is easy to manufacture, simple to install and adjust, and the face gear transmission gradually becomes a novel transmission mode capable of replacing the conical gear. The face gear is machined by gear shaping, gear milling, gear hobbing and the like. The gear shaping efficiency is low and the precision is poor; in the process of milling teeth, the milling cutter needs to swing and move along the tooth direction, so that the processing efficiency is difficult to improve; the tooth profile of the hobbing tool is distributed on a spherical surface, and the manufacturing of the tool is extremely difficult and the manufacturing cost is high.
The gear turning (also called as gear hobbing) is an efficient gear machining method, can be used for machining internal and external gears, has good meshing performance, overcomes the defects of machining the gears by other methods, and changes the traditional gear machining method. However, the conventional gear turning machine is generally used for machining a general cylindrical gear, and is not suitable for machining a face gear. In view of this, the utility model provides a face gear processing is with car tooth lathe.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, convenient to use's face gear machining is with car tooth lathe.
In order to achieve the above object, the utility model provides a face gear machining is with car tooth lathe's technical scheme is: a gear turning machine tool for processing a face gear comprises a base, wherein an X-axis feeding sliding table, a Y-axis feeding sliding table and a Z-axis feeding sliding table are arranged on the base, a gear turning cutter driving box is arranged on the Z-axis feeding sliding table and comprises a cutter main shaft used for installing a gear turning cutter, and a gear turning cutter driving mechanism used for driving the cutter main shaft and driving the gear turning cutter to rotate, the Z-axis feeding sliding table is assembled on the X-axis feeding sliding table in a reciprocating mode along the Z-axis direction, a workpiece driving box is arranged on the Y-axis feeding sliding table and comprises a workpiece main shaft used for installing a face gear to be processed, and a workpiece driving mechanism used for driving the workpiece main shaft and the cutter main shaft to rotate at a set rotation ratio and defining a plane formed by the X-axis and the Y-axis as a reference plane, and the rotation axis of the cutter main shaft and the rotation axis of the workpiece main shaft are parallel to the reference plane, the rotary axis of cutter main shaft and the rotary axis of work piece main shaft form and set for the shaft angle of intersection, Y axle feeds the slip table and feeds with the Z axle and feeds the slip table differential compensation and feed and order the facing cutter to wait to process face gear tooth line direction along waiting to process, X axle feeds slip table and Y axle and feeds the slip table differential compensation and feed in order to realize the feeding of facing cutter in waiting to process face gear tooth depth direction, the Z axle feeds the slip table and orders about the facing cutter main shaft and removes along Z axle direction to the rotary axis of adjustment facing cutter and the offset distance of waiting to process face gear in Z axle direction.
The beneficial effects are that: the utility model provides a facing gear processing is with car tooth lathe when using, install the car tooth sword on the cutter main shaft, will wait to process a face gear fixed mounting on the work piece main shaft, feed by X axle slip table and Y axle slip table difference compensation, realize waiting to process face gear feeding in the tooth depth direction, set shaft crossing angle is formed with the axis of revolution of work piece main shaft at the axis of revolution of cutter main shaft, and on the basis of car tooth sword and waiting to process face gear keeping the rotational speed ratio of settlement, through Y axle feed slip table and Z axle feed slip table difference compensation feeding, can continuously adjust the offset distance of the axis of revolution of car tooth sword and the axis of revolution of waiting to process a face gear in the Z axle direction and make the car tooth sword along its waiting to process face gear feeding in the tooth course, so that keep the tip profile cutting edge of car tooth sword tangent at the processing point with waiting to process a face gear tooth face, and finishing generating turning machining on the surface of the whole gear tooth of the face gear to be machined by utilizing the relative sliding of the turning cutter on the surface of the gear tooth of the face gear to be machined, feeding along the depth direction of the tooth again until all the tooth depths are obtained by machining, further obtaining a tooth profile structure with higher precision, and ensuring the precision of the face gear obtained by machining.
Preferably, a rotary table is arranged on the Y-axis feeding sliding table, the rotary central axis of the rotary table is parallel to the Z-axis direction, the workpiece driving box is fixedly arranged on the rotary table, the rotary table drives the workpiece driving box to rotate so as to adjust the workpiece spindle to a set position, and the set position enables the rotary axis of the workpiece spindle and the rotary axis of the tool spindle to form the set shaft intersection angle.
The beneficial effects are that: the rotary table is adopted to adjust the direction of the workpiece driving box so as to meet the arrangement requirement on different intersecting angles when different face gears are processed.
Further preferably, the workpiece driving mechanism comprises a workpiece servo motor, and the workpiece servo motor is in transmission connection with the workpiece spindle.
The beneficial effects are that: a workpiece servo motor is adopted to drive the workpiece spindle to rotate, and the rotating speed of the workpiece spindle is conveniently and accurately controlled.
Further preferably, the gear cutter driving mechanism comprises a gear cutter servo motor, and the gear cutter servo motor is in transmission connection with the cutter spindle.
The beneficial effects are that: the turning gear cutter servo motor is adopted to drive the cutter spindle to rotate, and the rotating speed of the cutter spindle is conveniently and accurately controlled.
Further preferably, the X-axis feeding sliding table is provided with a Z-axis sliding guide rail extending along the Z-axis direction, the Z-axis feeding sliding table is assembled on the Z-axis sliding guide rail in a guiding and moving mode, and the Z-axis feeding sliding table is driven to move by a lead screw nut mechanism and a Z-axis servo motor.
The beneficial effects are that: the Z-axis servo motor can be matched with the screw rod and nut mechanism to accurately adjust the offset distance.
Further preferably, the face gear machining gear lathe further comprises a gear turning cutter which is arranged on the cutter spindle and is of a helical bevel gear structure, and the difference between the helical angle of the gear turning cutter and the helical angle of the face gear to be machined is 5-20 degrees.
The beneficial effects are that: the turning tooth cutter is in a helical bevel gear structure and can form a cutting edge with a back angle, the difference between the helical angle of the turning tooth cutter and the helical angle of the face gear to be processed is 5-20 degrees, and the turning tooth cutter can slide relatively along the tooth surface of the face gear in the processing process.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a gear turning machine for face gear machining according to the present invention;
FIG. 2 is a partial structural view of the turning of the gear turning tool and the face gear to be machined in FIG. 1;
fig. 3 is a schematic diagram of the movement of the gear-turning machine shown in fig. 1 during gear-turning.
Description of reference numerals:
1-base, 2-X axis feeding sliding table, 3-Z axis sliding guide rail, 4-gear turning cutter servo motor, 5-Z axis feeding sliding table, 6-gear turning cutter driving box, 7-Z axis feeding servo motor, 8-workpiece servo motor, 9-workpiece driving box, 10-rotary table, 11-Y axis feeding sliding table, 12-Y axis feeding servo motor, 13-workpiece spindle, 14-to-be-machined face gear, 15-gear turning cutter and 16-cutter spindle.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model provides an embodiment of face gear machining is with car tooth lathe, the structure of car tooth lathe is shown in figure 1 and figure 2, the car tooth lathe specifically includes base 1, base 1 is for setting firmly the horizontal base on corresponding basis, the basis of here specifically can be horizontal basis ground, also can be horizontal basic platform, base 1 is equipped with the X axle and feeds slip table 2 and Y axle and feed slip table 11, wherein, the X axle feeds slip table 2 along X axle direction reciprocating motion, the Y axle feeds slip table 11 along Y axle direction reciprocating motion, for convenient the explanation, define the plane that X axle and Y axle formed as the reference plane, the reference plane and the horizontal basis ground of here are parallel.
The Y-axis feeding sliding table 11 is driven by a Y-axis feeding servo motor 12 to reciprocate, a rotary table 10 capable of rotating around the central axis in the Z-axis direction is arranged on the Y-axis feeding sliding table 11, a workpiece driving box 9 is arranged on the rotary table 10, a workpiece spindle 13 used for installing a gear 14 of a surface to be processed is arranged on the workpiece driving box 9, and a workpiece driving mechanism used for driving the workpiece spindle 13 to drive the gear 14 of the surface to be processed to rotate, the rotating axis of the workpiece spindle 13 is parallel to the reference plane, the workpiece driving mechanism comprises a workpiece servo motor 8, and the workpiece servo motor 8 is in transmission connection with the workpiece spindle 13 to drive the gear 14 of the surface to be processed to rotate.
Specifically, the orientation of the workpiece spindle 13 can be adjusted by the rotary table 10, and the rotation axis of the workpiece spindle 13 and the rotation axis of the tool spindle 16 form a set intersection angle Σ, that is, the intersection angle Σ between the rotation axis of the tooth cutting tool and the rotation axis of the face gear to be machined.
The X-axis feeding sliding table 2 is provided with a Z-axis sliding guide rail 3, the Z-axis sliding guide rail 3 is provided with a Z-axis feeding sliding table 5 which moves back and forth along a Z axis, the Z-axis feeding sliding table 5 is fixedly provided with a turning cutter driving box 6, the turning cutter driving box 6 is provided with a cutter main shaft 16 for mounting a turning cutter 15 and a turning cutter driving mechanism for driving the cutter main shaft 16 to rotate with the turning cutter, the rotation axis of the cutter main shaft 16 is parallel to the reference plane, the turning cutter driving mechanism comprises a turning cutter servo motor 4, and the turning cutter servo motor 4 is in transmission connection with the cutter main shaft 16, so that the rotation speed of the cutter main shaft 16 and the turning cutter 15 can be effectively controlled.
The Z-axis sliding guide rail 3 is provided with a Z-axis feeding servo motor 7 for driving the Z-axis feeding sliding table 5 to move up and down, and the Z-axis feeding servo motor 7 drives the Z-axis feeding sliding table 5 and the gear cutter driving box 6 to move up and down through a screw rod and nut mechanism.
In this embodiment, a common perpendicular line between the rotation axis of the workpiece spindle 13 and the rotation axis of the tool spindle 16 extends in the Z-axis direction, and the turning gear cutter driving box 6 reciprocates in the Z-axis direction so that the rotation axis of the tool spindle 16 and the rotation axis of the workpiece spindle 13 form an offset in the Z-axis direction, which is an offset adjustment direction.
Based on design parameters of a face gear and a cylindrical gear meshed with the face gear, a gear turning cutter for machining the face gear is designed through numerical simulation, the gear turning cutter 15 is specifically of a helical bevel gear structure, and the helix angle β of the gear turning cutter0The set difference value of the helical angle β between the helical angle β and the face gear to be machined is 5-20 degrees, and the generating and gear machining is carried out on the whole circumferential gear tooth surface of the face gear 14 to be machined under the feeding amount of the gear cutter along the tooth depth of the face gear to be machined each time.
During machining, the gear turning tool 15 is attached to the tool spindle 16, and the face gear 14 to be machined is cut by the inherent relative sliding between the gear turning tool 15 and the face gear 14 to be machined.
Through the compensation feeding of the Y-axis sliding table 11 and the Z-axis sliding table 5, the offset distance of the rotary axis of the turning cutter and the rotary axis of the face gear to be machined in the Z-axis direction can be continuously adjusted, the turning cutter is fed along the tooth trace direction of the face gear 14 to be machined, so that the tooth profile cutting edge at the end part of the turning cutter 15 is always kept tangent to the tooth trace of the face gear 14 to be machined at a machining point in the tooth machining process, the turning cutter enters from the outer end and exits from the inner end of the face gear to be machined by utilizing the relative sliding of the turning cutter on the tooth surface of the face gear, and the generated turning machining of the whole circumferential gear surface of the face gear to be machined is completed. And setting differential compensation feeding of the X-axis feeding sliding table and the Y-axis feeding sliding table again to realize feeding of the gear turning cutter in the depth direction of the gear of the face gear to be machined, and continuing generating gear turning machining on the whole circumferential gear surface of the face gear to be machined until all the depth of the gear is obtained through machining by the gear turning cutter.
It should be noted that the differential compensation feeding is linkage of the two corresponding feeding sliding tables, so that the gear turning cutter and the face gear to be machined move according to a set track, and the machining requirements are met. The communication of the corresponding servo shafts can be controlled through a numerical control system according to actual needs, the linkage of the two sliding tables is realized, and further the corresponding differential compensation feeding is realized.
In practice, during the generating and gear-turning process of the whole circumferential gear surface of the face gear 14 to be machined, the rotation axis of the gear-turning tool 15 and the rotation axis of the face gear 14 to be machined are maintained at the set intersection angle Σ, and the set rotation speed ratio U is maintained between the gear-turning tool 15 and the face gear 14 to be machinedrOn the basis, the turning gear cutter driving box 6 continuously moves in the Z-axis direction, and the workpiece driving box 9 continuously feeds in the Y-axis direction, so that the offset distance between the rotary axis of the turning gear cutter 15 and the rotary axis of the face gear 14 to be processed in the offset distance adjusting direction can be continuously adjusted, the turning gear cutter 15 synchronously feeds along the tooth direction of the face gear to be processed, the tooth profile cutting edge at the end part of the turning gear cutter 15 is always kept tangent to the tooth line of the face gear 14 to be processed at a processing point in the turning gear processing process, and the generating turning gear processing on the whole circumferential gear tooth surface of the face gear to be processed is accurately finished.
The X-axis feeding sliding table 2 is used for controlling the axial feeding of the turning tooth cutter 15 on the face gear to be machined so as to control the depth of the tooth groove, the tooth groove depth machining can be completed by multiple times of feeding, and under each time of axial feeding, the turning tooth cutter is used for performing generating turning tooth machining on the surface of the whole circumference tooth of the face gear to be machined until all tooth depths are obtained through machining.
In the embodiment shown in fig. 1, the base is a horizontal base, the intersection angle between the axis of the gear cutter and the axis of the face gear to be processed is 90 degrees, an X-axis feeding sliding table which can reciprocate along an X axis is correspondingly arranged to realize the feeding of the gear cutter in the axial direction of the face gear to be processed, the gear-turning cutter and the face gear to be processed are fed upwards in the tooth direction of the face gear to be processed by correspondingly configuring the difference compensation feeding of the Y-axis feeding sliding table capable of reciprocating along the Y axis and the Z-axis feeding sliding table capable of reciprocating along the Z axis, the corresponding offset distance adjustment is carried out through the Z-axis feeding sliding table in the Z-axis direction, the whole structure is simple, the gear-turning cutter can be conveniently and continuously adjusted to feed the gear to be machined on the face gear in the tooth direction, and then the tooth profile cutting edge at the end part of the turning cutter is always kept tangent to the tooth line of the face gear to be processed at a processing point in the process of processing the turning gear, so that the processing precision of the face gear is ensured.
Under the requirement of being different from the axis included angle in the embodiment, the direction of the workpiece driving box is adjusted through the rotary table, so that the gear turning machine tool can meet the processing requirement of different axis intersection angles and can be adjusted according to actual requirements. In other embodiments, the rotary table can be omitted, and the rotary axis of the workpiece spindle of the workpiece driving box and the rotary axis of the tool spindle of the gear cutting tool driving box keep a set intersection angle, and are only used for processing the face gear to be processed with the same intersection angle requirement.
In this embodiment, the gear turning machine is a horizontal machine in which workpiece spindles are arranged horizontally, and the X axis, the Y axis, and the Z axis refer to a relative assembly relationship of an X axis feeding slide table, a Y axis feeding slide table, and a Z axis feeding slide table. In other embodiments, the machining process may be performed on a vertical machine tool, and at this time, the specific arrangement positions of the X-axis feeding sliding table, the Y-axis feeding sliding table, and the Z-axis feeding sliding table are adjusted correspondingly as long as the one-to-one correspondence relationship between the three and the X-axis, the Y-axis, and the Z-axis is still ensured.
The gear turning machine tool is used for processing a face gear based on the following face gear wheel gear processing method, and is based on the arrangement of the face gear and a cylindrical gear meshed with the face gearMeasuring parameters, designing corresponding turning cutters through numerical simulation, wherein the design parameters comprise the tooth number, the modulus, the pressure angle, the spiral angle, the tooth crest coefficient and the top clearance coefficient of the face gear to be machined and the conjugate cylindrical gear, the modulus, the pressure angle, the tooth crest coefficient and the top clearance coefficient of the turning cutters are set to be the same as the corresponding numerical values of the face gear to be machined, the turning cutters are in helical bevel gear structures, and the spiral angles β of the turning cutters are enabled to be formed0Has a set difference with the helix angle β of the face gear to be machined, the set difference is specifically in the range of + -5 deg. -20 deg..
The method comprises the steps that under the feeding amount of a turning cutter along the axial direction of a face gear to be machined each time, the turning cutter carries out generating turning tooth machining on the surface of the whole circumference gear of the face gear to be machined, the turning cutter feeds along the tooth line direction of the face gear to be machined, enters from the outer end of the face gear to be machined and exits from the inner end of the face gear to be machined, the feeding amount along the axial direction of the face gear to be machined is continuously increased until the designed tooth depth is obtained through machining, in the process of generating the turning tooth machining on the surface of the whole circumference gear of the face gear to be machined, the rotating axis of the turning cutter and the rotating axis of the face gear to be machined keep a set intersection angle sigma, the direction of a common perpendicular line of the rotating axis of the turning cutter and the rotating axis of the face gear to be machined is defined as an offset adjusting direction, and the rotating speed ratio U between the turning cutterrOn the basis of the method, the offset distance between the rotary axis of the turning cutter and the rotary axis of the gear to be machined in the offset distance adjusting direction is continuously adjusted, and the turning cutter synchronously feeds along the axial direction of the turning cutter, so that the tooth profile cutting edge at the end part of the turning cutter is always kept tangent to the tooth profile of the gear to be machined at a machining point in the turning machining process and feeds along the tooth line direction of the gear to be machined, and the generated turning machining of the whole circumferential gear surface of the gear to be machined is completed.
Specifically, in the process of generating the turning teeth on the surface of the whole circumference gear of the face gear to be processed by the turning tooth cutter, when the turning tooth cutter moves upwards relative to the face gear to be processed from the outer end to the inner end in the turning tooth cutter axis direction, the offset distance between the rotation axis of the turning tooth cutter and the rotation axis of the face gear to be processed is adjusted to be continuously reduced.
In this embodiment, in the process of generating and turning the gear teeth on the whole circumferential gear tooth surface of the face gear to be machined by the turning cutter, since the offset distance is gradually reduced, the initial offset distance needs to be determined, and a specific numerical value of the initial offset distance may be determined empirically, or may be obtained by using the following calculation method:
the offset distance between the rotary axis of the gear turning cutter and the rotary axis of the face gear to be machined in the offset adjusting direction is the initial offset distance A at the beginning of gear turning0Initial offset distance A0Calculated by the following formula:
A0＝rasin(β+β0)
wherein r isaβ is the spiral angle of the gear to be processed, β is the external circle radius of the gear to be processed0Is the helix angle of the toothed cutter, β0The positive turning gear is taken when the turning gear cutter rotates rightwards, and the negative turning gear is taken when the turning gear cutter rotates leftwards.
At this time, the distance L from the cutting end face of the gear shaping cutter to the rotation axis of the face gear to be machined can be determined simultaneously0Comprises the following steps:
L0＝racos(β+β0)
in general, r is takenaSlightly larger than the excircle radius of the face gear to be actually processed so as to avoid the collision of the turning cutters.
In other embodiments, the gear turning tool may be moved in the direction of the tooth line of the face gear to be processed in such a manner that the gear turning tool enters from the inner end of the face gear to be processed and exits from the outer end of the face gear to be processed, thereby realizing the feeding.
In practice, for the toothed cutter, not only the module of the toothed cutter but also the number of teeth and the helix angle that meet the requirements of the above-mentioned range are determined. The module setting of the turning cutter is the same as the module of the face gear to be processed, the number of teeth and the helical angle of the turning cutter can be selected according to experience, and the number of teeth and the helical angle can also be determined by calculation according to the following steps:
step (1), calculating and obtaining the initial tooth number z of the turning cutter according to the following formula0＇：
z0'＝z1cos3β0'/cos3β1
The obtained z is0Rounding to integers according to design requirements to obtain the number of teeth z of the toothed cutter0Wherein z is1β number of teeth of cylindrical gear engaged with face gear to be machined0' design of the turning cutter to select the helix angle at first time, β1The helical angle of the cylindrical gear meshed with the face gear to be processed is set;
step (2), according to the number of teeth z of the gear turning tool obtained by rounding0The helix angle β of the serrated knife is calculated according to the following formula0：
Wherein z is1β number of teeth of cylindrical gear engaged with face gear to be machined1Helical angle, z, of cylindrical gear engaging face gear to be machined0Is composed of the z0The number of teeth of the gear cutter obtained after rounding;
step (3) of determining the pitch angle β of the cutting edge calculated in the step (2)0And whether the difference value of the spiral angle β of the face gear to be machined is within a set difference range, wherein the set difference range is +/-5-20 degrees, and if the difference value is within the set difference range, the tooth number z of the gear turning cutter can be determined0And helix angle β of the serrated knife0If the difference is out of the set difference range, the initially selected helix angle β of the design of the gear cutter needs to be selected again0And returning to the step (1) and the step (2) for calculation until the turning tooth helix angle β0And the helix angle β of the face gear to be machined, satisfies the set difference range.
According to the determined number z of teeth of the cutter0And a serrated knife helix angle β0The designed turning cutter can enable the normal tooth profile of the turning cutter to be the same as the tooth profile of the cylindrical gear conjugated with the face gear to be processed on the basis of the principle of an equivalent gear, so that the processed face gear can be correctly meshed with the conjugated cylindrical gear.
After the tooth number and the helical angle of the gear turning cutter are determined, the tooth number and the helical angle of the gear turning cutter can be determined according to the tooth number and the helical angleSet rotation speed ratio U between gear turning cutter and face gear to be processedrTo meet the normal processing requirements.
In practice, the ratio of rotation U set between the above-mentioned toothed cutter and the face gear to be machinedrThe calculation mode is different according to different structures of the face gear to be processed.
Specifically, when the face gear teeth machining method is a straight face gear machining method, that is, the face gear to be machined is a straight face gear, the rotation speed ratio U isr＝z2/z0Wherein z is2Is the number of face gear teeth, z0The number of teeth of the turning gear cutter is shown.
When the face gear turning method is a helical tooth face gear processing method, namely the face gear to be processed is a helical tooth face gear, additional extra corner increment needs to be considered corresponding to a tooth turning cutter, and the corner increment delta gamma of unit feeding amount is calculated according to the following formula:
Δγ＝(360sinβ)/(mπz2)
therefore, the fixed rotation speed ratio between the gear turning cutter and the face gear to be processed is as follows:
Ur＝z2/z0+ΔγA/φ2，
wherein A is the total length of the feed curve, phi2Is the total angle of rotation, z, of the face gear to be machined2Is the number of face gear teeth, z0β is the helical angle of the face gear to be processed, and m is the module of the helical tooth face gear.
When turning, the turning cutter rotates at a high speed, the higher the relative speed generated between tooth surfaces along the tooth trace extension direction, and the faster the turning cutter can cut metal along the tooth trace extension direction, theoretically, the feed speed of the turning cutter along the tooth trace of the face gear to be machined is equal to the relative speed V of the meshing of the turning cutter and the face gear to be machineds2The teeth can be cut normally, and generally, the feed speed of the gear turning cutter along the tooth line extending direction of the face gear to be processed is less than the relative speed of the gear turning cutter and the face gear to be processed, but it is noted that the feed speed is too low, which affects the processing efficiency.
As shown in fig. 3, the vehicleThe feed speed of the gear cutter along the tooth line extension direction of the gear of the face gear to be processed is less than the relative speed v of the gear turning cutter meshed with the gear of the face gear to be processeds2：
vs2＝vs-v2，
vs＝ωs×r0，v2＝ω2×r2，
Wherein v issIs the linear velocity vector, omega, of the toothed cutter at the cutting pointsIs the angular velocity vector, r, of the serrated knife0The vector radius of the gear cutting point at the big end of the gear turning cutter is shown; v. of2Is the linear velocity vector, omega, of the face gear to be processed at the cutting point2For angular velocity vector of face gear to be machined at the point to be machined, r2Is the vector radius from the center of the face gear to be machined to the cutting point, wherein r2The surface of the whole gear tooth of the face gear to be processed is gradually reduced in the process of generating and turning the gear tooth by the turning cutter each time.
On the basis that the turning cutter and the face gear to be machined keep a set rotating speed ratio, the turning cutter is fed along the axial direction of the turning cutter, the offset distance between the turning cutter and the face gear to be machined is gradually reduced, and the two motions are mutually matched, so that the cutting edge of the tooth profile at the end part of the turning cutter is tangent to the tooth profile of the face gear to be machined at a machining point and is fed along the tooth line direction of the face gear to be machined.
Claims (6)
1. The utility model provides a face gear machining is with car tooth lathe which characterized in that: including the base, be equipped with X axle on the base and feed the slip table, Y axle and feed the slip table and Z axle, the Z axle is fed and is equipped with the facing cutter drive case on the slip table, and the facing cutter drive case is including the cutter main shaft that is used for installing the facing cutter to and be used for driving the cutter main shaft and drive the facing cutter slewing facing cutter actuating mechanism, the assembly that the Z axle fed the slip table along Z axle direction reciprocating motion is on the X axle feeds the slip table, be equipped with the work piece drive case on the Y axle feeds the slip table, the work piece drive case is including the work piece main shaft that is used for installing the face gear that treats to process to and work piece actuating mechanism for drive work piece main shaft and cutter main shaft revolve with the speed ratio of settlement, define the plane that X axle and Y axle formed as the reference plane, the axis of revolution of cutter main shaft and the axis of revolution of work piece main shaft all with the reference plane is parallel, the axis of revolution of cutter main shaft and the axis, the Y-axis feeding sliding table and the Z-axis feeding sliding table are fed in a differential compensation mode to drive a turning tooth cutter to feed along a gear tooth line direction of a surface to be processed, the X-axis feeding sliding table and the Y-axis feeding sliding table are fed in a differential compensation mode to achieve feeding of the turning tooth cutter in the tooth depth direction of the surface to be processed, and the Z-axis feeding sliding table drives a main shaft of the turning tooth cutter to move along the Z-axis direction to adjust the offset distance between the rotary axis of the turning tooth cutter and the gear to be processed in the Z-axis direction.
2. The face gear machining tooth machine tool according to claim 1, characterized in that: the Y-axis feeding sliding table is provided with a rotary table, the rotary central axis of the rotary table is parallel to the Z-axis direction, the workpiece driving box is fixedly arranged on the rotary table and drives the workpiece driving box to rotate through the rotary table so as to adjust the workpiece spindle to a set position, and the set position enables the rotary axis of the workpiece spindle and the rotary axis of the tool spindle to form the set axis intersection angle.
3. The face gear machining tooth machine tool according to claim 1 or 2, characterized in that: the workpiece driving mechanism comprises a workpiece servo motor, and the workpiece servo motor is in transmission connection with the workpiece spindle.
4. The face gear machining tooth machine tool according to claim 1 or 2, characterized in that: the gear cutter driving mechanism comprises a gear cutter servo motor, and the gear cutter servo motor is in transmission connection with the cutter spindle.
5. The face gear machining tooth machine tool according to claim 1 or 2, characterized in that: the X-axis feeding sliding table is provided with a Z-axis sliding guide rail extending along the Z-axis direction, the Z-axis feeding sliding table is assembled on the Z-axis sliding guide rail in a guiding and moving mode, and the Z-axis feeding sliding table is driven to move by a screw rod nut mechanism and a Z-axis servo motor.
6. The face gear machining tooth machine tool according to claim 1 or 2, characterized in that: the gear turning machine tool for processing the face gear further comprises a gear turning cutter which is arranged on the cutter main shaft, the gear turning cutter is of an oblique-tooth bevel gear structure, and the difference value between the spiral angle of the gear turning cutter and the spiral angle of the face gear to be processed is 5-20 degrees.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921123382.1U CN210208929U (en) | 2019-07-17 | 2019-07-17 | Gear turning machine tool for processing face gear |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921123382.1U CN210208929U (en) | 2019-07-17 | 2019-07-17 | Gear turning machine tool for processing face gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114453683A (en) * | 2022-02-11 | 2022-05-10 | 山东临沂金星机床有限公司 | CNC gear machining machine |
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