CN111156309B - Mounting method of RV reducer - Google Patents
Mounting method of RV reducer Download PDFInfo
- Publication number
- CN111156309B CN111156309B CN202010043554.5A CN202010043554A CN111156309B CN 111156309 B CN111156309 B CN 111156309B CN 202010043554 A CN202010043554 A CN 202010043554A CN 111156309 B CN111156309 B CN 111156309B
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- gear
- pin
- camshaft
- assembly
- cycloid
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 claims abstract description 18
- 239000000084 colloidal system Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0056—Mounting parts arranged in special position or by special sequence, e.g. for keeping particular parts in his position during assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention relates to an installation method of an RV reducer, which comprises the following steps: s1, cleaning parts; s2, assembling a camshaft, a needle roller bearing, a gasket and a roller bearing; s3, assembling the first cycloid gear, the spacer, the second cycloid gear and the assembly in the step S2; s4, filling colloid into the first groove of the pin wheel shell and the second groove of the pin gear shell, heating the pin wheel shell to 100 +/-10 ℃, and pressing the pin gear shell into the heated pin wheel shell; s5, assembling the output disc, the first ball bearing and the assembly in the step S3; s6, assembling the assembly of the pinwheel housing, the first track, the first ball bearing and the step S5; s7, assembling a pinwheel shell, a second track, a second ball bearing and an input disc; and S8, sequentially passing the input shaft through the input disc, the second cycloid gear, the first cycloid gear and the output disc, and then mounting the external gear on the internal gear of the camshaft.
Description
Technical Field
The invention relates to the technical field of speed reducers, in particular to an installation method of an RV speed reducer.
Background
The applicant has designed an RV reducer, see fig. 1, comprising two camshaft assemblies 100, a gerotor gear assembly 200, a pin housing assembly 300, an output disc 400, an input disc 500, an input shaft 600.
Referring to fig. 1 to 3, the camshaft assembly 100 includes a camshaft 110, a needle bearing 120, a roller bearing 130, a spacer 140, and an external gear 150. The peripheral side surface of the camshaft 110 is provided with a first eccentric wheel 111 and a second eccentric wheel 112, the first eccentric wheel 111 and the second eccentric wheel 112 are both in a cylindrical shape, and the axes of the camshaft 110, the first eccentric wheel 111 and the second eccentric wheel 112 are not on the same straight line; an internal gear 113 is provided at one end of the camshaft 110, and a tooth alignment mark line is provided on the internal gear 113. The needle roller bearings 120 are mounted on both the first eccentric wheel 111 and the second eccentric wheel 112, and the inner rings of the needle roller bearings 120 abut against the circumferential side surface of the cam. The roller bearing 130 is attached to the needle bearings 120 on the side away from the adjacent needle bearing 120, and the inner race of the roller bearing 130 is in close contact with the circumferential side surface of the shoulder of the camshaft 110. The above-described spacer 140 is installed between the adjacent needle bearings 120 and roller bearings 130. The external gear 150 is an involute planetary gear, the external gear 150 is sleeved on the camshaft 110, external teeth are arranged on the peripheral side surface of the external gear 150, internal teeth are arranged on the inner side surface of the external gear 150, and the internal teeth of the external gear 150 are matched with the internal gear 113 to realize the connection of the external gear 150 and the camshaft 110; the external gear 150 is further provided with a tooth alignment mark line, and the tooth alignment mark line of the external gear 150 and the tooth alignment mark line of the internal gear 113 are vertically distributed at 90 °.
Referring to fig. 1, the cycloid gear assembly 200 includes a first cycloid gear 210, a second cycloid gear 220, and a spacer 230. The first cycloid gear 210 rotates 180 ° in the radial direction and then is stacked with the second cycloid gear 220, so that phase-staggered teeth are generated between the first cycloid gear 210 and the second cycloid gear 220. The spacer 230 is annular, the spacer 230 is provided between the first cycloid gear 210 and the second cycloid gear 220, and the spacer 230 is sandwiched between the first cycloid gear 210 and the second cycloid gear 220. The camshaft 110 is disposed through the first cycloid gear 210 and the second cycloid gear 220, an outer side surface of one needle bearing 120 on the camshaft 110 contacts with an inner bore surface of the first cycloid gear 210, an outer side surface of the other needle bearing 120 on the camshaft 110 contacts with an inner bore surface of the second cycloid gear 220, one roller bearing 130 on the camshaft 110 is located on a side of the first cycloid gear 210 away from the second cycloid gear 220, and the other roller bearing 130 on the camshaft 110 is located on a side of the second cycloid gear 220 away from the first cycloid gear 210.
Referring to fig. 1 and 3, the pin gear housing assembly 300 includes a pin gear housing 310, a pin gear housing 320, a plurality of pin gear pins 330, a first track 340, and a second track 350. Wherein the pin wheel housing 310 is made of aluminum alloy; a circular first groove 311 is formed in the inner wall of the pinwheel housing 310 along the inner wall of the pinwheel housing 310, the center of the first groove 311 is located on the axis of the pinwheel housing 310, and the first groove 311 is filled with glue. The pin gear housing 320 is annular, the pin gear housing 320 is made of alloy steel, the pin gear housing 320 is assembled in the pin gear housing 310 in an interference fit mode, and the axis of the pin gear housing 320 and the axis of the pin gear housing 310 are located on the same straight line, so that the pin gear housing 320 and the pin gear housing 310 jointly form the pin gear housing 310 in the existing planetary cycloidal speed reducer; specifically, a plurality of pin grooves 322 are formed in the inner side surface of the pin gear housing 320, and around the axis of the pin gear housing 320, the plurality of pin grooves 322 are annularly arranged on the inner side surface of the pin gear housing 320 at equal intervals; a second groove 321 matched with the first groove 311 is arranged on the outer side surface of the pin gear housing 320, the center of the second groove 321 is located on the axis of the pin gear housing 320, and the second groove 321 is filled with colloid. In practical operation, after the first recess 311 and the second recess 321 are filled with colloid, the pin wheel housing 310 and the pin gear housing 320 are assembled in an interference fit manner by using a temperature difference method, and the pin gear housing 320 is positioned by using a positioning fixture, so as to ensure the assembling accuracy of the pin wheel housing 310 and the pin gear housing 320. A plurality of pin teeth pins 330 are correspondingly installed in the plurality of pin grooves 322. The first track 340 and the second track 350 are sleeved in the pin wheel housing 310 in a clearance fit manner, the first track 340 and the second track 350 are respectively located on two sides of the pin gear housing 320, the first track 340 and the second track 350 respectively prop against two ends of the pin gear pin 330, and the position and the movement of the pin gear pin 330 are limited through the first track 340, the second track 350 and the pin slot 322. The cycloid gear assembly 200 is disposed between a first track 340 and a second track 350, the first cycloid gear 210 is engaged with the pin 330, and the second cycloid gear 220 is engaged with the pin 330.
Referring to fig. 1, the structure of the output tray 400 is similar to that of the existing product, and is different from the existing product in that: the output tray 400 is made of aluminum alloy. The output disc 400 is installed in the pinwheel housing 310, the output disc 400 is located on a side of the first rail 340 away from the second rail 350, and the first ball bearing 360 is installed between the output disc 400 and the first rail 340. In addition, the camshaft 110 is inserted into the output disc 400, one roller bearing 130 of the camshaft 110 is arranged on the output disc 400, and specifically, a first bushing (not shown) made of alloy steel is arranged between the circumferential side surface of the roller bearing 130 and the inner wall of the output disc 400 to reduce friction and prolong the service life of the output disc 400; the external gear 150 on the camshaft 110 is also disposed within the output disc 400.
Referring to fig. 1, the input disc 500 has a structure similar to that of the existing product, and is different from the existing product in that: the input disc 500 is made of aluminum alloy. The input disc 500 is installed in the pinwheel housing 310, the input disc 500 is positioned on the side of the second rail 350 far from the first rail 340, and the second ball bearing 370 is installed between the input disc 500 and the second rail 350; the input disc 500 is fixedly connected with the output disc 400 through a bolt 610, and the bolt 610 is connected with the output disc 400 through a screw after sequentially passing through the input disc 500, the second cycloid gear 220 and the first cycloid gear 210. In addition, the camshaft 110 is inserted into the input disc 500, and the other roller bearing 130 of the camshaft 110 is disposed on the input disc 500, specifically, a retainer ring 510 is disposed between an end surface of the roller bearing 130 and the input disc 500, and a second sleeve (not shown) made of alloy steel is disposed between an outer circumferential surface of the roller bearing 130 and an inner wall of the input disc 500 to reduce friction and prolong a service life of the input disc 500.
Referring to fig. 1, a driving gear 620 is disposed at one end of an input shaft 600, and after the input shaft 600 sequentially passes through an input disc 500, a second cycloid gear 220, a first cycloid gear 210, and an output disc 400, the driving gear 620 is simultaneously engaged with two external gears 150.
In order to assemble the RV reducer designed by the applicant with high efficiency and high quality, the applicant also designs an installation method of the RV reducer.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method of mounting an RV reducer, which has advantages of assembling the RV reducer designed by the present applicant with high efficiency and high quality.
The mounting method of the RV reducer comprises the following steps: s1, cleaning parts of the RV reducer; s2, the needle roller bearing, the gasket and the roller bearing are sequentially arranged on the camshaft; s3, the first cycloid gear, the spacer and the second cycloid gear are stacked together, then the assembly completed in the step S2 is installed on the first cycloid gear and the second cycloid gear, the cam shaft is connected with the first cycloid gear through one needle bearing, and the cam shaft is connected with the second cycloid gear through the other needle bearing; s4, filling colloid into the first groove of the pin wheel shell and the second groove of the pin gear shell, heating the aluminum alloy pin wheel shell to 100 +/-10 ℃, press-fitting the pin gear shell into the heated pin wheel shell, and waiting for the assembly to be cooled to room temperature; s5, sequentially mounting the assembly completed in the step S3 on an output disc; after the assembly is finished, the first ball bearing is positioned between the output disc and the cycloid gear assembly, and the camshaft is connected with the output disc through a roller bearing; s6, sequentially installing the assembly which is completed in the step S5 and the first track at one end of the pin wheel shell, and then inserting the pin gear pin into the pin groove of the pin gear shell along the gap formed by the first cycloid gear, the second cycloid gear and the pin gear shell; after the assembly is finished, the first rail abuts against the end face of the pin gear shell, the first ball bearing is positioned in a space formed by the output disc and the first rail, the cycloid gear assembly is positioned in the pin gear shell, and the pin gear pin is positioned in the pin groove; s7, sequentially mounting a second rail, a second ball bearing and an input disc at the other end of the pinwheel shell, and then sequentially passing a bolt through the input disc, a second cycloid gear and a first cycloid gear and then connecting the bolt with an output disc in a threaded manner; after the assembly is finished, the first rail and the second rail respectively abut against two ends of a pin gear pin, the pin gear pin is positioned in a space formed by the pin slot, the first rail and the second rail, a second ball bearing is positioned in a space formed by the input disc and the second rail, a cam shaft penetrates through the input disc, and the cam shaft is connected with the input disc through a roller bearing; s8, sequentially enabling the input shaft to penetrate through the input disc, the second cycloid gear, the first cycloid gear and the output disc, and then installing the external gear on the internal gear of the camshaft; after assembly is completed, the driving gear is simultaneously meshed with the two external gears.
Compared with the prior art, the mounting method of the RV reducer utilizes the characteristics of aluminum alloy, interference fit can be carried out by adopting a temperature difference method in the interference fit process of the pin wheel shell and the pin gear shell, the aluminum alloy pin wheel shell is heated to 100 +/-10 ℃, then the pin gear shell is pressed into the heated pin wheel shell, and the interference fit with high interference can be completed without damaging the contact surface after the assembly is cooled to room temperature. In addition, the colloid not only has the function of reinforcing and bonding, but also can play a role of damping at the matching part by utilizing the characteristics of the high polymer material, so that the matching part can achieve higher service performance and longer service life.
Further, in step S1, the parts include at least a cam shaft, an external gear, a first cycloid gear, a second cycloid gear, a spacer, a pin gear housing, a first rail, a second rail, an output disc, an input disc, and an input shaft.
Further, in step S3, the first cycloid gear is rotated 180 ° in the radial direction and then stacked with the second cycloid gear, so that the first cycloid gear and the second cycloid gear generate phase-staggered teeth.
Further, in step S4, for the positioning of the pin gear housing in the pin gear housing, a pre-designed positioning jig is used to determine the mounting position of the pin gear housing.
Further, in step S5, the first hub is first loaded into the output disc; then, sequentially mounting the assembly of the first ball bearing, the camshaft assembly and the cycloid gear assembly on the output disc; after the assembly is completed, the first ball bearing is positioned between the output disc and the cycloid gear assembly, and one roller bearing on the camshaft is installed in the first shaft sleeve.
Further, in step S7, first, the retainer ring is installed on the input disc, and then the second sleeve is installed; after the input disc is installed, a second track, a second ball bearing and the input disc are sequentially installed at the other end of the inner cavity of the pin wheel shell, and then a bolt sequentially penetrates through the input disc, a second cycloid gear and a first cycloid gear and then is in threaded connection with the output disc; after the assembly is completed, the first rail and the second rail are respectively abutted against two ends of the pin gear pin, the second ball bearing is positioned in a space formed by the input disc and the second rail, the camshaft is arranged in the input disc in a penetrating manner, the other roller bearing of the camshaft is positioned in the second shaft sleeve, and the end face of the roller bearing is abutted against the retainer ring.
Further, in step S8, the tooth alignment marker line of the external gear and the tooth alignment marker line of the internal gear are vertically distributed at 90 °.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is an exploded view of a RV reducer of the background art;
FIG. 2 is a schematic structural view of a camshaft assembly according to the prior art;
FIG. 3 is a schematic diagram of the distribution of an external gear and an internal gear according to the prior art;
FIG. 4 is a schematic view of the assembly of a pinwheel housing and a pin gear housing according to the prior art;
reference numerals:
100. a camshaft assembly; 110. a camshaft; 111. a first eccentric wheel; 112. a second eccentric wheel; 113. an internal gear; 120. a needle bearing; 130. a roller bearing; 140. a gasket; 150. an outer gear; 200. a gerotor gear assembly; 210. a first cycloid gear; 220. a second cycloid gear; 230. a spacer; 300. a needle gear housing assembly; 310. a pinwheel housing; 311. a first groove; 320. a pin gear housing; 321. a second groove; 322. a pin slot; 330. a pin gear pin; 340. a first track; 350. a second track; 360. a first ball bearing; 370. a second ball bearing; 400. an output tray; 500. an input disc; 510. a retainer ring; 600. an input shaft; 610. a bolt; 620. the gears are driven.
Detailed Description
The RV reducer is the RV reducer structure, and the mounting method sequentially comprises the following steps.
Step S1: all parts must be cleaned by kerosene or industrial gasoline and dried by an air gun; before the bearing is assembled, a hand feeling rotation test is required to be carried out, and the bearing is qualified; and checking whether burrs and flashes exist at the assembly positions of the parts, if so, removing the burrs and flashes by using a file, then blowing the burrs and flashes clean by using an air gun, and if abnormal attachments exist, cleaning the burrs and flashes in other modes according to the circumstances.
In step S1, the components include at least the camshaft 110, the external gear 150, the first cycloid gear 210, the second cycloid gear 220, the spacer 230, the pin gear housing 310, the pin gear housing 320, the first rail 340, the second rail 350, the output disc 400, the input disc 500, and the input shaft 600.
Step S2: the camshaft assembly 100 is assembled by mounting two needle bearings 120 on the first eccentric 111 and the second eccentric 112 of the camshaft 110, respectively, then mounting two spacers 140 on both ends of the eccentric portion of the camshaft 110, respectively, and finally mounting two roller bearings 130 on shoulders on both ends of the camshaft 110, with the spacers 140 between the needle bearings 120 and the roller bearings 130.
In step S2, it should be noted that: 1. when the bearing inner ring is pressed into the camshaft 110, the tool supports the bearing inner ring; 2. the camshaft 110 is vertically arranged in the press-fitting process, the correction is carried out through the flow of light pressing, rotation and light pressing at the beginning of the press-fitting process, after the hand-feeling camshaft 110 is pressed into enough guide length, the force is added, and the use of large force or impact operation is forbidden at the initial stage of the press-fitting process; 3. in the middle stage of press mounting of the camshaft 110, the force is kept uniform; 4. in the final stage of press mounting of the camshaft 110, a certain impact force is allowed to be applied to ensure that the bearing is tightly pressed and attached to the shaft shoulder of the camshaft 110; 5. after the press mounting is finished, 100% of the eccentric wheel part of the camshaft 110 is visually checked, and the bearing inner ring of the needle bearing 120 is ensured to be always close to the eccentric wheel part; 6. and after the press mounting is finished, the position of the shaft shoulder of the camshaft 110 is visually checked by 100 percent, and the bearing inner ring of the roller bearing 130 is attached to the shaft shoulder of the camshaft 110 without backlash.
Step S3: assembly of the gerotor gear assembly 200, placing the spacer 230 on the first gerotor gear 210; then, the first cycloid gear 210 and the second cycloid gear 220 are overlapped together, so that the spacer 230 is positioned between the first cycloid gear 210 and the second cycloid gear 220; after the first cycloid gear 210, the second cycloid gear 220 and the spacer 230 are stacked, the two camshaft assemblies 100 are sequentially mounted in the cycloid gear assembly 200, wherein the outer side surface of one needle bearing 120 on the camshaft 110 contacts with the inner bore surface of the first cycloid gear 210, and the outer side surface of the other needle bearing 120 on the camshaft 110 contacts with the inner bore surface of the second cycloid gear 220.
In step S3, the first cycloid gear 210 and the second cycloid gear 220 cannot be stacked in a normal full overlapping manner, and the first cycloid gear 210 is rotated 180 ° in the radial direction and then stacked with the second cycloid gear 220, so that the first cycloid gear 210 and the second cycloid gear 220 generate phase-staggered teeth, and the stress applied to the eccentric portion of the camshaft 110 during rotation is cancelled out.
Step S4: firstly, filling colloid into the first groove 311 of the pin wheel shell 310 and the second groove 321 of the pin gear shell 320; then, the alloy steel pin gear case 320 is embedded in the aluminum alloy pin gear case 310 in an interference fit manner, the minimum interference of the aluminum-steel composite position of the pin gear case 320 is 58.2um, the interference fit is performed by adopting a temperature difference method, specifically, the aluminum alloy pin gear case 310 is heated to 100 +/-10 ℃, then the pin gear case 320 is pressed into the heated pin gear case 310, and the interference fit with high interference can be completed without damaging the contact surface after the assembly is cooled to room temperature.
In step S4, for the positioning of the pin gear housing 320 in the pin gear housing 310, a pre-designed positioning jig is used to determine the installation position of the pin gear housing 320, so as to ensure the assembly accuracy of the pin gear housing 320 and the pin gear housing 310. In addition, the glue in step S4 can utilize the characteristics of the polymer material to absorb vibration at the mating part in addition to the function of reinforcing and bonding, so that the mating part can achieve higher usability and longer service life.
Step S5: loading the first sleeve into the output tray 400; then, the assembly of the first ball bearing 360, the camshaft assembly 100 and the cycloid gear assembly 200 is sequentially mounted on the output disc 400, and after the assembly is completed, the first ball bearing 360 is located between the output disc 400 and the cycloid gear assembly 200, and one roller bearing 130 on the camshaft 110 is mounted in the first bush.
Step S6: first, the first track 340 is installed in the pinwheel housing 310, and the first track 340 abuts against the end face of the pin gear housing 320; then, the assembly of the output disc 400, the first ball bearing 360, the camshaft assembly 100 and the cycloid gear assembly 200 is installed in the pin gear housing 310, after the assembly is completed, the first ball bearing 360 is located in a space formed by the output disc 400 and the first track 340, and the cycloid gear assembly 200 is located in the pin gear housing 320; finally, the camshaft 110 is slowly rotated by using the principle of the gap distribution, so that the gap formed by the first cycloid gear 210, the second cycloid gear 220 and the pin gear housing 320 can allow a pin gear pin 330 to be inserted into the pin slot 322 of the pin gear housing 320 along the gap, and the process is repeated until all the pin slots 322 of the pin gear housing 320 are provided with a pin gear pin 330.
Step S7: the retainer ring 510 is first installed on the input disc 500, and then the second sleeve is installed; after the input disc 500 is installed, the second rail 350, the second ball bearing 370 and the input disc 500 are sequentially installed at the other end of the inner cavity of the pinwheel housing 310, and then the bolt 610 sequentially penetrates through the input disc 500, the second cycloid gear 220 and the first cycloid gear 210 and then is in threaded connection with the output disc 400; after the assembly is completed, the first track 340 and the second track 350 respectively abut against two ends of the pin gear 330, the second ball bearing 370 is located in a space formed by the input disc 500 and the second track 350, the camshaft 110 is inserted into the input disc 500, the other roller bearing 130 of the camshaft 110 is located in the second sleeve, and an end surface of the roller bearing 130 abuts against the retainer ring 510.
Step S8: the input shaft 600 sequentially passes through the input disc 500, the second cycloid gear 220, the first cycloid gear 210 and the output disc 400, and the driving gear 620 of the input shaft 600 is positioned in the output disc 400; next, the external gears 150 are mounted on the camshaft 110, and both the external gears 150 are meshed with the driving gear 620.
In step S8, it is explicitly noted that: the tooth alignment mark line of the external gear 150 is vertically arranged at 90 ° to the tooth alignment mark line of the internal gear 113, and functions to ensure that the phase relationship of the external teeth of the external gear 150 up to the eccentric remote point of the camshaft 110 is permanently fixed.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. A method for mounting an RV reducer is characterized by comprising the following steps:
s1, cleaning parts of the RV reducer;
s2, the needle bearing (120), the gasket (140) and the roller bearing (130) are sequentially installed on the camshaft (110);
s3, the first cycloid gear (210), the spacer (230) and the second cycloid gear (220) are stacked together, then the assembly completed in the step S2 is installed on the first cycloid gear (210) and the second cycloid gear (220), the camshaft (110) is connected with the first cycloid gear (210) through one needle bearing (120), and the camshaft (110) is connected with the second cycloid gear (220) through the other needle bearing (120);
s4, filling colloid in a first groove (311) of a pin wheel shell (310) and a second groove (321) of a pin gear shell (320), heating the aluminum alloy pin wheel shell (310) to 100 +/-10 ℃, press-fitting the pin gear shell (320) into the heated pin wheel shell (310), and waiting for the assembly to be cooled to room temperature;
s5, sequentially mounting the assembly completed in the step S3 on the output disc (400); after the assembly is completed, the first ball bearing (360) is positioned between the output disc (400) and the cycloid gear assembly (200), and the camshaft (110) is connected with the output disc (400) through a roller bearing (130);
s6, sequentially mounting the assembly completed in the step S5 on one end of a pin wheel shell (310), and then inserting a pin gear pin (330) into a pin groove (322) of the pin gear shell (320) along a gap formed by a first cycloid gear (210), a second cycloid gear (220) and the pin gear shell (320); after the assembly is finished, the first track (340) abuts against the end face of the pin gear shell (320), the first ball bearing (360) is positioned in a space formed by the output disc (400) and the first track (340), the cycloid gear assembly (200) is positioned in the pin gear shell (320), and the pin gear pin (330) is positioned in the pin groove (322);
s7, sequentially installing a second rail (350), a second ball bearing (370) and an input disc (500) at the other end of the pinwheel shell (310), and then sequentially passing a bolt (610) through the input disc (500), a second cycloid gear (220) and a first cycloid gear (210) and then connecting the bolt with an output disc (400) in a threaded manner; after the assembly is finished, the first track (340) and the second track (350) respectively abut against two ends of the pin gear pin (330), the pin gear pin (330) is located in a space formed by the pin groove (322), the first track (340) and the second track (350), the second ball bearing (370) is located in a space formed by the input disc (500) and the second track (350), the camshaft (110) penetrates through the input disc (500), and the camshaft (110) is connected with the input disc (500) through a roller bearing (130);
s8, sequentially passing an input shaft (600) through an input disc (500), a second cycloid gear (220), a first cycloid gear (210) and an output disc (400), and then mounting an external gear (150) on an internal gear (113) of a camshaft (110); after assembly is completed, the driving gear (620) is simultaneously meshed with the two external gears (150).
2. The method of mounting an RV reducer according to claim 1, characterized in that: in step S1, the parts include at least a camshaft (110), an external gear (150), a first cycloid gear (210), a second cycloid gear (220), a spacer (230), a pin gear housing (310), a pin gear housing (320), a first rail (340), a second rail (350), an output disc (400), an input disc (500), and an input shaft (600).
3. The method of mounting an RV reducer according to claim 1, characterized in that: in step S3, the first cycloid gear (210) is rotated 180 ° in the radial direction and then stacked on the second cycloid gear (220), so that the first cycloid gear (210) and the second cycloid gear (220) generate phase-staggered teeth.
4. The method of mounting an RV reducer according to claim 1, characterized in that: in step S4, the attachment position of the pin gear case (320) is determined by using a positioning jig designed in advance for positioning the pin gear case (320) in the pin gear housing (310).
5. The method of mounting an RV reducer according to claim 1, characterized in that: in step S5, a first sleeve is first fitted to the output disc (400); then, sequentially mounting the assembly of the first ball bearing (360), the camshaft (110) component (100) and the cycloid gear component (200) on the output disc (400); after assembly, a first ball bearing (360) is located between the output disc (400) and the gerotor gear assembly (200), and a roller bearing (130) on the camshaft (110) is mounted in the first sleeve.
6. The method of mounting an RV reducer according to claim 1, characterized in that: in step S7, the retainer ring (510) is first installed on the input disc (500), and then the second sleeve is installed; after the input disc (500) is installed, a second track (350), a second ball bearing (370) and the input disc (500) are sequentially installed at the other end of the inner cavity of the pin wheel shell (310), and then a bolt (610) sequentially penetrates through the input disc (500), a second cycloid gear (220) and a first cycloid gear (210) and then is in threaded connection with the output disc (400); after the assembly is finished, the first track (340) and the second track (350) respectively abut against two ends of the pin gear pin (330), the second ball bearing (370) is located in a space formed by the input disc (500) and the second track (350), the camshaft (110) is arranged in the input disc (500) in a penetrating mode, the other roller bearing (130) of the camshaft (110) is located in the second shaft sleeve, and the end face of the roller bearing (130) abuts against the retainer ring (510).
7. The method of mounting an RV reducer according to claim 1, characterized in that: in step S8, the tooth alignment mark line of the external gear (150) and the tooth alignment mark line of the internal gear (113) are distributed perpendicularly at 90 °.
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| CN111156309B true CN111156309B (en) | 2022-03-08 |
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| CN103234005A (en) * | 2013-05-17 | 2013-08-07 | 天津百利天星传动有限公司 | High-bearing-capacity cycloidal pin wheel speed reducer |
| CN104526258A (en) * | 2014-12-02 | 2015-04-22 | 张大秋 | Technical method for improving precision of RV reducer |
| CN107387677A (en) * | 2017-07-31 | 2017-11-24 | 扬州元新机电科技有限公司 | A kind of combination bearing planet-cycloid reducer |
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| CN107588177A (en) * | 2017-09-28 | 2018-01-16 | 深圳市领略数控设备有限公司 | A kind of cycloidal-pin wheel harmonic drive |
| WO2019218047A1 (en) * | 2018-05-18 | 2019-11-21 | 9188-7588 Quebec Inc. | Cycloidal speed reducer and method for retrofitting the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167056B (en) * | 2017-05-19 | 2019-12-13 | 北京工业大学 | Test device for detecting wear of materials of cycloidal gear and needle bearing of RV reducer |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234005A (en) * | 2013-05-17 | 2013-08-07 | 天津百利天星传动有限公司 | High-bearing-capacity cycloidal pin wheel speed reducer |
| CN104526258A (en) * | 2014-12-02 | 2015-04-22 | 张大秋 | Technical method for improving precision of RV reducer |
| CN206738509U (en) * | 2017-03-21 | 2017-12-12 | 青岛海惠达橡塑材料有限公司 | A kind of New-type cycloidal reductor |
| CN107387677A (en) * | 2017-07-31 | 2017-11-24 | 扬州元新机电科技有限公司 | A kind of combination bearing planet-cycloid reducer |
| CN107588177A (en) * | 2017-09-28 | 2018-01-16 | 深圳市领略数控设备有限公司 | A kind of cycloidal-pin wheel harmonic drive |
| WO2019218047A1 (en) * | 2018-05-18 | 2019-11-21 | 9188-7588 Quebec Inc. | Cycloidal speed reducer and method for retrofitting the same |
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| CN111156309A (en) | 2020-05-15 |
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