CN110842313A - Auxiliary tool for precision machining of inner spline of RV reducer synchronizing wheel and machining method - Google Patents
Auxiliary tool for precision machining of inner spline of RV reducer synchronizing wheel and machining method Download PDFInfo
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- CN110842313A CN110842313A CN201911099581.8A CN201911099581A CN110842313A CN 110842313 A CN110842313 A CN 110842313A CN 201911099581 A CN201911099581 A CN 201911099581A CN 110842313 A CN110842313 A CN 110842313A
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- synchronizing wheel
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- synchronizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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- Jigs For Machine Tools (AREA)
Abstract
The invention relates to an auxiliary tool for precisely machining an inner spline of a synchronous wheel of an RV reducer and a machining method, wherein the auxiliary tool comprises a synchronous wheel clamping and positioning ring, an inner hole is a positioning hole for inserting the synchronous wheel, the height of the positioning hole is the sum of a plurality of synchronous heights, a group of internal gear tooth profiles for clamping and positioning are arranged on the positioning hole at intervals of 90 degrees along the circumferential direction, the tooth profile surface is the same as the tooth profile shape of an external gear of the synchronous wheel, and four sections of concentric arc surfaces are arranged among the four groups of internal gear tooth profiles; a reference plane is arranged on the periphery of the clamping and positioning ring of the synchronizing wheel; the device comprises an annular bottom plate fixedly connected with the lower end of a clamping and positioning ring of a synchronizing wheel; the synchronous wheel clamping and limiting device comprises a plurality of pressing plates fixedly connected with a synchronous wheel clamping and locating ring, wherein the inner ends of the pressing plates extend to the upper side of a locating hole, and the plurality of synchronous wheels placed in the locating hole are axially compressed and limited. The invention realizes the one-time precision machining of the plurality of internal splines of the synchronizing wheel, not only ensures the phase angle consistency of the external teeth of the synchronizing wheel and the internal splines, but also ensures the coaxial precision of the external gears and the internal splines.
Description
Technical Field
The invention belongs to the technical field of manufacturing of RV reducers, relates to a machining technology of synchronizing wheels in the RV reducers, and particularly relates to an auxiliary tool and a machining method for precisely machining internal splines of the synchronizing wheels of the RV reducers.
Background
The RV reducer has the performance characteristics of high precision, large torque, high reliability and the like, and is widely applied to different intelligent manufacturing fields of industrial robots, transfer turntables and the like. The synchronous wheels are core components of the first-stage transmission of the RV speed reducer, and each RV speed reducer is provided with 2 or 3 synchronous wheels. The synchronous wheel 2 is characterized in that the external part is a precise involute gear 2.1, the internal part is a precise involute internal spline 2.2, and the two parts are in a fixed angle corresponding relation to ensure consistent motion during transmission. Under the condition of mass production, the processing mode of the synchronizing wheel is as follows: firstly, drawing an involute internal spline by using a forming cutter, and then processing an external involute gear by using the internal spline as a positioning reference. However, in the trial production and small-batch processing stages of the prototype of the product, due to the economic requirement of the parts, the precise processing of the related parts can be carried out only by adopting the method of designing a precise tool and changing the manufacturing process.
Through the search of the prior art, the technical scheme similar to the patent is not searched.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an auxiliary tool for precisely machining an inner spline of a synchronous wheel of an RV reducer and a machining method, wherein the auxiliary tool can be used for realizing one-step clamping, one-step precise machining of a plurality of inner splines of the synchronous wheel, ensuring the phase angles of outer teeth and the inner splines of the synchronous wheel to be consistent, ensuring the coaxial precision of outer teeth and the inner splines of the synchronous wheel and ensuring the gear running stability of the synchronous wheel.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a RV reduction gear synchronizing wheel internal spline auxiliary fixtures for precision finishing which characterized in that:
the synchronous wheel clamping positioning ring is characterized by comprising a synchronous wheel clamping positioning ring, wherein an inner hole of the synchronous wheel clamping positioning ring is a positioning hole for inserting a synchronous wheel, the height of the positioning hole is the sum of the heights of a plurality of synchronous wheels, a group of internal gear tooth profiles for clamping and positioning are arranged on the positioning hole at intervals of 90 degrees along the circumferential direction, the tooth profile surfaces of the internal gear tooth profiles are the same as the tooth profile shape of an external gear of the synchronous wheel, four sections of concentric circular arc surfaces are arranged among the four groups of internal gear tooth profiles, and the diameter size of the four sections of concentric circular arc surfaces; a reference plane for realizing angle alignment is arranged on the periphery of the clamping and positioning ring of the synchronizing wheel;
the synchronous wheel clamping positioning device comprises an annular bottom plate, wherein a central hole is formed in the annular bottom plate, and the annular bottom plate is coaxially and fixedly connected with the lower end of a synchronous wheel clamping positioning ring through a screw;
the pressing device comprises a plurality of pressing plates, wherein the pressing plates are arranged at the upper end of a synchronizing wheel clamping and positioning ring along the circumferential direction and fixedly connected with the synchronizing wheel clamping and positioning ring through screws, the inner ends of the pressing plates extend to the upper side of a positioning hole, and the pressing plates are axially pressed and limited for a plurality of synchronizing wheels placed in the positioning hole.
The above object of the present invention is also achieved by the following technical solutions:
the precision machining method for the inner spline of the RV reducer synchronizing wheel is characterized in that the auxiliary tool is adopted in the machining method, and comprises the following steps:
s1, the synchronizing wheel clamping positioning ring and the annular bottom plate are fixedly connected outside the machine tool workbench in advance through screws;
s2, mounting the synchronous wheel clamping and positioning ring fixed with the annular bottom plate on the table top of the linear cutting machine tool equipment, aligning the reference plane by using a dial indicator to correct the angle, and pressing by using a pressing plate;
s3 wire-threading of the wire cutting machine tool and alignment of the tool center, the specific method is as follows: respectively contacting the cutting wire with four sections of concentric circular arc surfaces, recording 4 contact point coordinates by a machine tool, then fitting into a circle, determining the center of the circle, aligning the center, and then unloading the cutting wire;
s4, sequentially placing a plurality of synchronizing wheels into the positioning holes of the synchronizing wheel clamping positioning rings, ensuring that the placing angles of the external gears of the synchronizing wheels are consistent, ensuring that the synchronizing wheels are mutually attached, and enabling the external gears to be in contact with the tooth profiles of the internal gears on the positioning holes and to be tightly pressed with the annular bottom plate;
s5 after the synchronizing wheel is placed in the positioning hole, a pressing plate is arranged at the upper part of the synchronizing wheel, the pressing plate is fixedly connected with the synchronizing wheel clamping positioning ring through a screw, and the upper part of the positioning hole, into which the pressing plate extends, is in pressing contact with the upper end of the uppermost synchronizing wheel, so that the synchronizing wheel is ensured to have no axial movement;
and S6, wire cutting and threading are carried out, and the internal spline of the synchronizing wheel is processed according to the input parameters of the machine tool, so that the requirements of the drawing are met.
The invention has the advantages and positive effects that:
1. the outer gear of the synchronous wheel is used as a processing reference for clamping, the tool is in multi-surface contact with the synchronous wheel, and the gap between the tool and the synchronous wheel is eliminated to the greatest extent.
2. The auxiliary tool is provided with an angle alignment and zero alignment part, so that the requirements on the angle consistency and the coaxiality of the external gear and the internal spline after the parts are machined are met.
3. According to the invention, the tooling is reasonably designed according to the actual required number of the synchronizing wheels of each RV reducer, and the synchronizing wheels for each reducer are guaranteed to be clamped and processed at one time, so that the consistency of the processing precision is guaranteed.
4. The invention adopts a wire cutting multiple processing method to ensure the processing precision and the surface roughness of the tooth surface of the internal spline.
Drawings
FIG. 1 is a schematic view of a synchronizer ring clamping of the present invention, wherein 1a is a perspective view 1, and 1b is a perspective view 2;
FIG. 2 is a schematic structural view of a clamping and positioning ring for a synchronizer wheel according to the present invention, wherein 2a is a front view, 2b is a left side view, and 2c is a rear view;
FIG. 3 is a schematic structural view of the annular base plate of the present invention;
fig. 4 is a schematic structural view of the synchronizing wheel, wherein 4a is a perspective view and 4b is a plan view.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
The auxiliary tool and the synchronizing wheel are in same-tooth-shape contact, so that when a part is clamped, the tool and the synchronizing wheel are in multi-surface contact, and the gap between the tool and the synchronizing wheel is eliminated to the greatest extent. And a multi-part clamping mode is adopted, so that the synchronous wheels of all the RV reducers are machined together. The concrete structure of auxiliary fixtures includes following several parts:
including synchronizing wheel clamping holding ring 3, synchronizing wheel clamping holding ring's hole is for supplying synchronizing wheel 2 male locating hole, and the high sum of a plurality of synchronizing wheels that highly is of locating hole, and is concrete, according to every RV reduction gear synchronizing wheel actual demand quantity, the degree of depth of rational design locating hole to realize a clamping processing of a plurality of synchronizing wheels. A group of internal gear tooth profiles 3.2 for clamping and positioning are arranged on the positioning holes at intervals of 90 degrees along the circumferential direction, the tooth profile surface of the internal gear tooth profile is the same as the tooth profile shape of the external gear 2.1 of the synchronizing wheel, the multi-surface contact of the clamping and positioning ring of the synchronizing wheel and the synchronizing wheel is ensured, and the gap between the tool and the synchronizing wheel is eliminated to the maximum extent. Four sections of concentric circular arc surfaces 3.3 are arranged among the tooth profiles of the four groups of internal gears, and the diameter size of the four sections of concentric circular arc surfaces is consistent with the outer diameter size of the synchronizing wheel, so that the alignment of the center of the tool in subsequent processing is facilitated; the periphery of the synchronizing wheel clamping positioning ring is provided with a reference plane 3.1 for realizing angle alignment, so that the phase angle is consistent when the tool is installed at each time.
Including annular bottom plate 4, be provided with centre bore 4.1 on the annular bottom plate, supply the wire-electrode cutting processing threading usefulness, the annular bottom plate passes through the coaxial fixed connection of screw with the lower extreme of synchronizing wheel clamping holding ring, and the effect of annular bottom plate is: realize holding in the palm end spacing.
Including a plurality of clamp plates 1, a plurality of clamp plates set up in the upper end of synchronizing wheel clamping holding ring along the circumferencial direction to pass through screw fixed connection with synchronizing wheel clamping holding ring, the inner of a plurality of clamp plates extends to the top of locating hole, and it is spacing to form the axial to placing a plurality of synchronizing wheels in the locating hole and compress tightly.
The method for precisely machining the inner spline of the RV reducer synchronizing wheel by adopting the auxiliary tool comprises the following steps
S1, the synchronizing wheel clamping positioning ring and the annular bottom plate are fixedly connected outside the machine tool workbench in advance through screws;
s2, mounting the synchronous wheel clamping and positioning ring fixed with the annular bottom plate on the table top of the linear cutting machine tool equipment, aligning the reference plane by using a dial indicator to correct the angle, and pressing by using a pressing plate;
s3 wire-threading of the wire cutting machine tool and alignment of the tool center, the specific method is as follows: respectively contacting the cutting wire with four sections of concentric circular arc surfaces, recording 4 contact point coordinates by a machine tool, then fitting into a circle, determining the center of the circle, aligning the center, and then unloading the cutting wire;
s4 the multiple synchronizing wheels are sequentially placed in the positioning holes of the synchronizing wheel clamping positioning rings, the fact that the placing angles of the external gears of the synchronizing wheels are consistent is guaranteed, the synchronizing wheels are attached to each other, and the external gears are partially in contact with the tooth profiles of the internal gears on the positioning holes and are tightly pressed with the annular bottom plate.
S5 after the synchronizing wheel is placed in the positioning hole, a pressing plate is arranged at the upper part of the synchronizing wheel, the pressing plate is fixedly connected with the synchronizing wheel clamping positioning ring through a screw, and the upper part of the positioning hole, into which the pressing plate extends, is in pressing contact with the upper end of the uppermost synchronizing wheel, so that the synchronizing wheel is ensured to have no axial movement;
and S6, wire cutting and threading are carried out, and the internal spline 2.2 of the synchronizing wheel is processed according to the input parameters of the machine tool, so that the requirements of drawings are met.
The invention provides a precision machining method and device for an RV reducer synchronizing wheel internal spline under the conditions of trial production of a prototype and small batch production, and has the advantages of simple operation, convenient part alignment, high machining precision and the like.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (2)
1. The utility model provides a RV reduction gear synchronizing wheel internal spline auxiliary fixtures for precision finishing which characterized in that:
the synchronous wheel clamping positioning ring is characterized by comprising a synchronous wheel clamping positioning ring, wherein an inner hole of the synchronous wheel clamping positioning ring is a positioning hole for inserting a synchronous wheel, the height of the positioning hole is the sum of the heights of a plurality of synchronous wheels, a group of internal gear tooth profiles for clamping and positioning are arranged on the positioning hole at intervals of 90 degrees along the circumferential direction, the tooth profile surfaces of the internal gear tooth profiles are the same as the tooth profile shape of an external gear of the synchronous wheel, four sections of concentric circular arc surfaces are arranged among the four groups of internal gear tooth profiles, and the diameter size of the four sections of concentric circular arc surfaces; a reference plane for realizing angle alignment is arranged on the periphery of the clamping and positioning ring of the synchronizing wheel;
the synchronous wheel clamping positioning device comprises an annular bottom plate, wherein a central hole is formed in the annular bottom plate, and the annular bottom plate is coaxially and fixedly connected with the lower end of a synchronous wheel clamping positioning ring through a screw;
the pressing device comprises a plurality of pressing plates, wherein the pressing plates are arranged at the upper end of a synchronizing wheel clamping and positioning ring along the circumferential direction and fixedly connected with the synchronizing wheel clamping and positioning ring through screws, the inner ends of the pressing plates extend to the upper side of a positioning hole, and the pressing plates are axially pressed and limited for a plurality of synchronizing wheels placed in the positioning hole.
2. The precision machining method for the inner spline of the RV reducer synchronizing wheel is characterized in that the auxiliary tool is adopted in the machining method, and comprises the following steps:
s1, the synchronizing wheel clamping positioning ring and the annular bottom plate are fixedly connected outside the machine tool workbench in advance through screws;
s2, mounting the synchronous wheel clamping and positioning ring fixed with the annular bottom plate on the table top of the linear cutting machine tool equipment, aligning the reference plane by using a dial indicator to correct the angle, and pressing by using a pressing plate;
s3 wire-threading of the wire cutting machine tool and alignment of the tool center, the specific method is as follows: respectively contacting the cutting wire with four sections of concentric circular arc surfaces, recording 4 contact point coordinates by a machine tool, then fitting into a circle, determining the center of the circle, aligning the center, and then unloading the cutting wire;
s4, sequentially placing a plurality of synchronizing wheels into the positioning holes of the synchronizing wheel clamping positioning rings, ensuring that the placing angles of the external gears of the synchronizing wheels are consistent, ensuring that the synchronizing wheels are mutually attached, and enabling the external gears to be in contact with the tooth profiles of the internal gears on the positioning holes and to be tightly pressed with the annular bottom plate;
s5 after the synchronizing wheel is placed in the positioning hole, a pressing plate is arranged at the upper part of the synchronizing wheel, the pressing plate is fixedly connected with the synchronizing wheel clamping positioning ring through a screw, and the upper part of the positioning hole, into which the pressing plate extends, is in pressing contact with the upper end of the uppermost synchronizing wheel, so that the synchronizing wheel is ensured to have no axial movement;
and S6, wire cutting and threading are carried out, and the internal spline of the synchronizing wheel is processed according to the input parameters of the machine tool, so that the requirements of the drawing are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099581.8A CN110842313A (en) | 2019-11-12 | 2019-11-12 | Auxiliary tool for precision machining of inner spline of RV reducer synchronizing wheel and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099581.8A CN110842313A (en) | 2019-11-12 | 2019-11-12 | Auxiliary tool for precision machining of inner spline of RV reducer synchronizing wheel and machining method |
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| CN110842313A true CN110842313A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911099581.8A Pending CN110842313A (en) | 2019-11-12 | 2019-11-12 | Auxiliary tool for precision machining of inner spline of RV reducer synchronizing wheel and machining method |
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| CN (1) | CN110842313A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676119A (en) * | 2020-12-14 | 2021-04-20 | 铜陵精远线模有限责任公司 | Split type painting die and splicing type painting die clamp for processing painting die |
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| JP2018086688A (en) * | 2016-11-28 | 2018-06-07 | 三菱重工工作機械株式会社 | Gear processing method and gear fixing device |
| CN108817571A (en) * | 2018-06-15 | 2018-11-16 | 上海汉霸机电有限公司 | A kind of intelligent positioning system and its implementation of electric discharge machine |
| CN109414775A (en) * | 2016-06-30 | 2019-03-01 | 住友电工烧结合金株式会社 | Clamp for machining and processing method |
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2019
- 2019-11-12 CN CN201911099581.8A patent/CN110842313A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04240020A (en) * | 1991-01-18 | 1992-08-27 | Honda Motor Co Ltd | Receiving jig for gear work, manufacture thereof and gear work method |
| CN205363282U (en) * | 2015-11-24 | 2016-07-06 | 重庆煌钰机械有限公司 | A frock for processing combination ring gear that reverses gear |
| CN205834407U (en) * | 2016-06-30 | 2016-12-28 | 中国航空工业标准件制造有限责任公司 | Six petal line cutting tools |
| CN109414775A (en) * | 2016-06-30 | 2019-03-01 | 住友电工烧结合金株式会社 | Clamp for machining and processing method |
| JP2018086688A (en) * | 2016-11-28 | 2018-06-07 | 三菱重工工作機械株式会社 | Gear processing method and gear fixing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112676119A (en) * | 2020-12-14 | 2021-04-20 | 铜陵精远线模有限责任公司 | Split type painting die and splicing type painting die clamp for processing painting die |
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Effective date of registration: 20210308 Address after: 300409 No.64, Gaoxin Avenue, science and Technology Park, Beichen economic and Technological Development Zone, Tianjin Applicant after: Tianjin Qiling Electromechanical Technology Co., Ltd Address before: 300131 No. 268, No. 1, T-shaped road, Hongqiao District, Tianjin Applicant before: CHINA SHIPBUILDING INDUSTRY CORPORATION NO.707 Research Institute |
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Application publication date: 20200228 |