WO2018059363A1

WO2018059363A1 - Planetary gear shaft pressure fitting device

Info

Publication number: WO2018059363A1
Application number: PCT/CN2017/103256
Authority: WO
Inventors: 陈永飞
Original assignee: 横店集团英洛华电气有限公司
Priority date: 2016-09-30
Filing date: 2017-09-25
Publication date: 2018-04-05
Also published as: CN106312905A; CN106312905B; NZ741885A; IL256977B; IL256977A

Abstract

A planetary gear shaft pressure fitting device, comprising a base (1), a rear cover positioning component (2) positioned on a top side of the base, and a press-fitting block (4) positioned on a top side of the rear cover positioning component. The planetary frame assembly (3) comprises a planetary frame (31) and a rear cover (32). A planetary gear (33) is provided between the planetary frame and the rear cover. The planetary frame, planetary gear, and rear cover are all provided with a gear shaft hole (34) for engaging with a gear shaft. The base is internally installed with a plurality of securing pins (6) provided in a vertical direction. A top end of the securing pin extends beyond the base. The fixing pin moves, subject to a force, up and down relative to the base. The press-fitting block forms a plurality of press-fitting pins (41) extending downwards. The rear cover positioning component forms a plurality of first positioning holes (23) running through the rear cover positioning component. Each of the first positioning holes correspond to each of the gear shaft holes (34) of the rear cover. Each of the press-fitting pins correspond to each of the positioning pins. The gear shaft hole of the planetary frame and the gear shaft hole of the planetary gear both allow an upper portion of the press-fitting pin to be through-inserted. The first positioning hole and the gear shaft hole of the rear cover both allow a bottom portion of the press-fitting pin to be through-inserted.

Description

Title of the invention: Planetary wheel axle press fitting device

Technical field

[0001] An object of the present invention is to provide a planetary wheel axle press fitting device which can improve assembly efficiency and improve assembly quality.

Background technique

[0002] The planetary gear is mounted on the planet carrier assembly through the axle. To ensure the meshing accuracy and smooth running of the planetary gear, the axle is fixed by using an interference fit. The assembly worker needs to fix and fix the planet carrier assembly first, and then press the axle assembly. The under-pressure of the axle is often insufficient or the pressure is too deep. When the cymbal is used, the planetary gear will loosen and the carrier assembly will be disengaged. The assembly quality cannot be guaranteed; and the positioning of the carrier assembly and the planetary gears is required before the axle is press-fitted, so as to facilitate the alignment of the axles, but the carrier assembly cannot be directly squared on the table, making the positioning of the planetary wheels very troublesome. , assembly efficiency is low.

technical problem

[0003] It is an object of the present invention to provide a planetary wheel axle press fitting device which can improve assembly efficiency and improve assembly quality.

Problem solution

Technical solution

[0004] In order to achieve the above object, the present invention adopts the following technical solution: A planetary wheel axle pressing device of the present invention comprises a base, a rear cover positioning member on the upper side of the base, and a press fitting on the upper side of the rear cover positioning member. The carrier assembly is disposed between the base and the rear cover positioning member, the carrier assembly includes a carrier and a rear cover, the planetary gear is disposed between the carrier and the rear cover, the carrier, the planet carrier and the back cover Each of the bases is provided with a plurality of vertically disposed positioning pins, and the upper end of the positioning pin extends to the outside of the base, and the positioning pin is forced to move up and down relative to the base. The press-fit block is formed with a plurality of downwardly extending press-fit pins, and the rear cover positioning member is formed with a plurality of first positioning holes extending up and down through the rear cover positioning member, the first positioning hole and the axle of the rear cover Correspondingly, the press-fit pin has a one-to-one correspondence with the positioning pin, and the axle hole of the carrier and the axle hole of the planetary wheel can pass the upper end of the press-fit pin, The first positioning hole and the axle hole of the rear cover can pass through the lower end of the press-fit pin.

[0005] Using the present invention, the planet carrier assembly is placed on the base with the upper end of the locating pin in the planet gear, and the rear cover locator is placed on the upper side of the planet carrier assembly to constrain the planet carrier assembly to the base and the back cover. Between the positioning members, the axle to be pressed is then placed in the first positioning hole of the rear cover positioning member, and the lower end of the axle is located in the axle hole of the rear cover of the carrier assembly to realize the alignment of the axle, and then The pressing block is placed on the upper side of the rear cover positioning member and the lower end of the pressing pin is located in the first positioning hole, the upper end of the positioning pin abuts against the lower end of the axle, and the lower end of the pressing pin abuts the upper end of the axle to complete the carrier assembly and the invention With the cooperation of the device, the press block is then biased by the palm to press the axle through the press pin. The invention is more efficient and convenient than being directly pressed into the axle.

[0006] Wherein, the lower end of the wheel shaft or the lower end of the pin is placed in the planetary gear to realize the positioning of the planetary wheel and the carrier assembly, and the assembler can also move the planetary wheel to position the upper end of the positioning pin. Inside the planetary gear; after the planetary carrier assembly is placed on the base, that is, when the upper end of the positioning pin is located in the planetary gear, the axle or the pin is removed and the rear cover positioning member is placed, or the rear cover positioning member is directly removed without removing the axle Placement. Wherein, the pressing of the axle is performed, and the lower end surface of the pressing block abuts against the upper end surface of the carrier of the carrier assembly, and the pressing block applies a force to the rear cover positioning member of the carrier assembly to ensure the axial fixing of the carrier assembly. Among them, the length of the positioning pin and the pressing pin are set as needed to ensure the accuracy of the position after the wheel shaft is pressed, so as to improve the assembly quality and reduce the defective rate. Among them, the number of the positioning pin and the press-fit pin is set as needed, so that all the axles can be press-fitted at one time, or one axle can be press-fitted at a time.

Preferably, the carrier is formed with a downwardly extending connector, and the base is formed with a connector positioning hole that cooperates with the connector. The above arrangement is for the positioning of the planet carrier assembly, and the positioning of the planet carrier assembly of the present invention is made simpler and more convenient by puncturing the base to match the connector of the planet carrier.

[0008] Preferably, the rear cover positioning member includes a positioning sleeve and a positioning mandrel fixed in the positioning sleeve, the first positioning hole is disposed on the positioning sleeve, and the positioning mandrel has a lower outer diameter smaller than a step structure of an upper outer diameter, a bearing chamber is formed on an upper end surface of the rear cover, and the rear cover is formed with a shaft hole through which the shaft passes, the shaft hole is located in the bearing chamber, and the rear cover positioning member The planet carrier assembly cooperates such that a lower portion of the positioning mandrel is located within the shaft bore, and an outer wall of the lower portion of the positioning mandrel abuts the inner wall of the bearing. Wherein, the positioning mandrel is used for positioning and fixing with the rear cover of the planet carrier assembly, the positioning sleeve is used for guiding the pressing pin, and the positioning sleeve and the positioning mandrel are fixedly arranged, and the positioning mandrel is clamped in the bearing chamber of the back cover. The rear cover positioning member is now fixed to the carrier assembly. Wherein, the height of the lower part of the positioning mandrel can be selected according to the need, and the height of the lower part of the positioning mandrel can be much larger than the height of the bearing chamber in order to facilitate the removal of the positioning mandrel.

[0009] Preferably, the base includes a positioning base on the upper side and a fixed base on the lower side, and a lower portion of the positioning pin is formed with a limiting convex ring protruding outward in the radial direction, and the positioning base is formed for providing An upper through hole of the locating pin passing through the upper side of the limiting collar, the upper through hole extending up and down through the positioning base, wherein the fixed base is formed with a lower through hole through which the limiting collar passes, the positioning pin A compression spring is fixed on the lower side of the limit collar. The invention realizes the up and down movement of the positioning pin by the compression spring. Among them, the limit convex ring is used for fixing the lower limit of the positioning pin to avoid the positioning pin being completely separated from the base.

[0010] Preferably, the number of the positioning pin and the press-fit pin is one. Since the tooling of the present invention is composed of a plurality of components, the concentricity of the first positioning hole, the axle hole of the carrier assembly, and the hole where the positioning pin is located is difficult to ensure, and the number of the positioning pin and the press-fit pin is one, that is, each time Only one axle is press-fitted, and there is no need to consider the concentricity of the upper and lower parts of the axle hole, and the press-fit efficiency is higher.

[0011] Preferably, the press-fit block is formed with a downwardly extending positioning guide post, and the positioning mandrel of the rear cover positioning member is formed with a second mating hole that cooperates with the positioning guide post, the press fitting The block cooperates with the back cover positioning member to position the positioned guide post in the second mating hole. The above arrangement is for positioning and fixing of the press block, facilitating the press fitting of the present invention. Wherein, the second mating hole can be inserted up and down through the positioning mandrel as needed, so that the lower end of the positioning guide post passes through the positioning mandrel and fits in the shaft hole of the carrier assembly.

[0012] Preferably, the positioning sleeve and the positioning mandrel are separately disposed, and the positioning sleeve has a radial cross section arranged in an annular shape to include a through slot for accommodating the positioning mandrel, and the outer wall of the positioning sleeve is formed with a plurality of a fixing hole extending radially inward, the fixing hole communicating with the through groove, the fixing hole being formed with an internal thread, the screw threadingly fitting in the fixing hole, and the screw abutting against the outer wall of the positioning mandrel. The above settings are used to fix the positioning sleeve to the positioning mandrel. Among them, it is also possible to punch holes in the side wall of the positioning mandrel to facilitate the fixing of the screws, and the number of screws can be selected as needed.

[0013] Preferably, an upper end surface of the base is formed with an end surface positioning groove that cooperates with a lower end surface of the carrier, the connection positioning hole communicates with the end surface positioning groove, and the base cooperates with the carrier assembly The planet carrier is located in the rear end cover positioning groove, and the outer edge of the planet carrier is in contact with the inner wall of the end surface positioning groove; the connector positioning hole extends up and down through the base. Wherein, the end positioning groove is used for the radial limit of the planet carrier of the planet carrier assembly. Wherein, the connecting head positioning hole runs up and down through the base, which is convenient for connecting The inner wall of the joint positioning hole is processed to facilitate the cooperation of the joint head and the joint positioning hole.

[0014] Preferably, the positioning base and the fixing base are fixed by a fastener, the lower through hole penetrates the fixing base up and down, the lower part of the lower through hole is formed with a thread structure and is screwed with a thread block. The lower end surface of the limiting pin of the positioning pin is formed with a downwardly extending guiding protrusion, the upper end of the compression spring is sleeved outside the guiding protrusion, and the upper end of the compression spring is opposite to the limiting convex ring The lower end of the compression spring abuts the thread block. The lower through hole passes through the fixed base and the upper through hole passes through the positioning base, which facilitates the processing of the upper through hole and the lower through hole inner wall, and facilitates the up and down movement of the positioning pin. Wherein, the guiding protrusion is used for axial positioning of the compression spring to avoid offset of the pressing head spring.

[0015] Preferably, the press-fit block is provided with a press-fit plate, and the press-fit plate is formed with a guide post through hole for the positioning guide post to pass through, and a press-fit pin through which the press-fit pin passes The hole has a diameter larger than a diameter of the positioning sleeve. The setting of the press-fit plate facilitates the fixing of the press-fit block and the press-fit pin and the positioning guide post. After the press-fit pin and the positioning guide post pass through the press-fit plate, the press-fit block and the press-fit pin and the positioning guide post are fixed. . Among them, the thickness of the press-fit plate can be selected according to the needs, so as to ensure the accuracy of the press-fit position of the axle. Wherein, the diameter of the press-fit plate is set as needed to facilitate removal of the press-fit plate from the back cover positioning member.

Advantageous effects of the invention

Beneficial effect

[0016] The present invention has the advantages of improving assembly efficiency, improving assembly quality, and reducing defective rate.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of the present invention;

2 is a schematic structural view of another embodiment of the present invention;

3 is a schematic structural view of a press-fit block of the present invention;

4 is a schematic structural view of a back cover positioning member of the present invention;

[0021] FIG. 5 is a schematic structural view of a carrier assembly of the present invention;

6 is a schematic structural view of a base of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

BEST MODE FOR CARRYING OUT THE INVENTION [0023] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0024] As shown in FIG. 1 and FIG. 2, a planetary wheel axle pressing device of the present invention comprises a base 1, a rear cover positioning member 2 located on the upper side of the base 1, and a pressure on the upper side of the rear cover positioning member 2. The block 4 is disposed between the base 1 and the rear cover locator 2, and the carrier assembly 3 includes a carrier 31 and a rear cover 32. The planetary gear 33 is disposed between the carrier 31 and the rear cover 32. The frame 31 and the rear cover 32 are respectively provided with three axle holes 34 for engaging the axle 5. The base 1 is fixed with a vertically disposed positioning pin 6. The upper end of the positioning pin 6 extends to the outside of the base 1, and the positioning pin 6 is biased. The rear cover positioning member 2 is formed with three first positioning holes 23 extending through the rear cover positioning member. The first positioning hole 23 corresponds to the wheel shaft hole 34, and the pressing block 4 is formed to extend downward. The press pin 41, the base 1, the carrier assembly 3, the rear cover positioning member 2, and the press block 4 cooperate such that the upper end of the positioning pin 6 is located in the planetary gear 33, and the lower end of the press pin 41 is located in the first positioning hole 23. The press-fit pin 41 corresponds to the positioning pin 6, and the press-fit pin The axis of 41 and the axis of the positioning pin 6 are on the same straight line.

1, 2, and 5, the carrier 31 is formed with a connector 35 extending downward, and a portion of the connector 35 adjacent to the lower end surface of the carrier is formed with a connector collar extending radially outward. 36. The rear cover 32 is formed with an upwardly extending annular projection for the bearing chamber 37, and the rear cover 32 is formed with a shaft hole 38 through which the shaft passes, and the shaft hole 38 is located inside the bearing chamber 37.

[0026] As shown in FIG. 1, FIG. 2, and FIG. 6, the base 1 is formed with a connector positioning hole 19 that cooperates with the connector 35, and the base

1 includes a positioning base 11 on the upper side and a fixed base 12 on the lower side, and the connecting head positioning hole 19 penetrates the positioning base 11 and the fixed base 12 up and down.

[0027] The upper end surface of the positioning base 11 is formed with an end surface positioning groove 13 that cooperates with the lower end surface of the carrier 31. The connection head positioning hole 19 communicates with the end surface positioning groove 13, and the end surface positioning groove 13 is formed with the connection head convex ring 36 for giving way. Let the slot 20.

[0028] The lower portion of the positioning pin 6 is formed with a limiting convex ring 14 protruding outward in the radial direction, and the positioning base 11 is formed with an upper through hole 15 for the positioning pin 6 passing through the upper side of the limiting convex ring 14 to pass through The hole 15 extends up and down through the positioning base 11. The fixed base 12 is formed with a lower through hole 16 through which the limiting collar 14 passes, and the lower through hole 16 is provided with a compression spring ₁₇ and a thread block ₁₈ .

[0029] A lower portion of the lower through hole 16 is formed with a threaded structure, and the threaded block 18 is threadedly fitted into the lower through hole, and an end surface of the threaded block 18 is formed with a flat groove for engaging the flat screwdriver. The positioning base 11 and the fixed base 12 are fixed by a fastener 7, and the fastener 7 is a hexagon socket screw. [0030] The lower end surface of the limiting collar 14 of the positioning pin 6 is formed with a downwardly extending guiding protrusion 10, the upper end of the compression spring 17 is sleeved outside the guiding protrusion 10, and the upper end of the compression spring 17 is opposite to the limiting convex ring 14. The lower end of the compression spring 17 abuts against the upper end surface of the thread block 18.

[0031] As shown in FIG. 1, FIG. 2 and FIG. 4, the rear cover positioning member 2 includes a positioning sleeve 21 and a positioning mandrel 22 fixed in the positioning sleeve 21. The first positioning hole 23 is disposed on the positioning sleeve 21 and is up and down. Through the positioning sleeve 21, the positioning mandrel 22 has a stepped structure in which the lower outer diameter is smaller than the upper outer diameter. The positioning sleeve 21 and the positioning mandrel 22 are separately disposed, and the positioning sleeve 21 is annularly disposed to include a through groove 24 for receiving the positioning mandrel 22. The outer wall of the positioning sleeve 21 is formed with a fixing extending radially inward. The hole 25 and the fixing hole 25 communicate with the through groove 24. The fixing hole 25 is formed with an internal thread and is screwed with a screw 26 which abuts against the outer wall of the upper portion of the positioning mandrel 22.

[0032] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, the press-fit block 4 is formed with a downwardly extending positioning guide post 42, and the positioning mandrel 22 of the rear cover positioning member 2 is formed with a positioning guide post. The second mating hole 43 is engaged with the second mating hole 43 and the second mating hole 43 extends up and down through the positioning mandrel 22. A press-fit plate 8 is disposed under the press-fit block 4, and the press-fit plate 8 is formed with a guide post through hole 81 through which the guide post 42 passes, and a press-fit pin through hole 82 through which the press-fit pin 41 passes, and the press-fit plate 8 The diameter is larger than the diameter of the positioning sleeve 21.

[0033] As shown in FIG. 1 and FIG. 2, the carrier assembly 3 is placed on the base 1 using the crucible of the present invention, and the upper end of the positioning pin 6 is located in the planetary gear 33, and the connector 35 of the carrier assembly 3 is located on the base. In the connector positioning hole 19, the carrier 31 of the carrier assembly fits in the end positioning groove 13, and the outer wall of the carrier 31 abuts against the inner wall of the end positioning groove 13; the rear cover positioning member 2 is placed on the upper side of the carrier assembly 3. , the planet carrier assembly 3 is restrained between the base 1 and the rear cover positioning member 2, wherein the lower portion of the positioning mandrel 22 is located in the bearing chamber 37, and the lower end surface of the positioning sleeve 21 is in contact with the upper end surface of the rear cover 32 of the carrier assembly 3. And the outer wall of the positioning mandrel 22 abuts against the inner wall of the bearing chamber 37, and realizes the alignment of the first positioning hole 23 with the axle hole 34 of the carrier assembly 3; then the axle 5 to be press-fitted is placed on the rear cover positioning member 2 The first positioning hole 23 is disposed, and the lower end of the axle 5 is located in the planetary wheel 33 or in the axle hole 34 of the rear cover 32; then the press-fit plate 8 and the press-fit block 4 are placed on the upper side of the rear cover positioning member 2, and Passing the press-fit pin 41 through the press-fit pin through hole 82 and entering the first positioning hole 23 The guide post 42 passes through the guide post through hole 81 into the second positioning hole 43, and the lower end surface of the press plate 8 is in contact with the upper end surface of the rear cover of the rear cover positioning member 2; then the assembly worker presses the press block 4, and then presses The lower end of the loading pin 41 abuts the upper portion of the axle 5, the lower end of the axle 5 abuts the upper portion of the positioning pin 6, and the assembly worker continues to press to move the axle 5 down and to cooperate with the carrier assembly; after completing the assembly of one axle, the planetary gear is assembled The component is off the base and the above content is repeated Pressing of the remaining two axles.

Among them, the lower end of the axle 5 has a truncated cone structure. Wherein, the lower end of the pin or the lower end of the pin is placed in the planetary gear to realize the positioning of the planetary wheel and the carrier assembly, and the assembler can also move the planetary wheel so that the upper end of the positioning pin is located in the planetary gear. After passing the planet carrier over the base; after the upper end of the positioning pin is located in the planetary gear, remove the axle or pin and then place the rear cover positioning member, or directly after removing the axle The placement of the cover locator. Among them, the positioning pin, the length of the press-fit pin, and the thickness of the press-fit plate are set as needed to ensure the precision of the position after the wheel is press-fitted, so as to improve the assembly quality and reduce the defective rate.

Claims

Claim

[Claim 1] A planetary wheel axle press-fit device, comprising: a base, a rear cover positioning member on an upper side of the base, and a press-fit block on an upper side of the rear cover positioning member, wherein the carrier assembly is disposed on the base and the rear Between the cover locating members, the carrier assembly includes a planet carrier and a rear cover, the planetary gear is disposed between the carrier and the rear cover, and the carrier, the planetary gear and the rear cover are respectively provided with axle holes for engaging the axle, A plurality of vertically disposed positioning pins are fixed in the base, the upper end of the positioning pin extends outside the base, the positioning pin is forced to move up and down with respect to the base, and the pressing block is formed with a plurality of downwardly extending a pressing pin, the rear cover positioning member is formed with a plurality of first positioning holes extending through the rear cover positioning member, the first positioning holes are in one-to-one correspondence with the axle holes of the rear cover, and the pressing pin One-to-one correspondence with the positioning pin, the axle hole of the planet carrier and the axle hole of the planetary wheel can pass the upper end of the press-fit pin, and the axle hole of the first positioning hole and the rear cover can pass the lower end of the press-fit pin.

[Claim 2] The planetary wheel axle press-fit device according to claim 1, wherein the carrier is formed with a downwardly extending connector, and the base is formed with a connector positioning that cooperates with the connector. hole.

[Claim 3] The planetary wheel axle press fitting device according to claim 1, wherein the rear cover positioning member comprises a positioning sleeve and a positioning mandrel fixed in the positioning sleeve, wherein the first positioning hole is disposed on In the positioning sleeve, the positioning mandrel has a stepped structure whose lower outer diameter is smaller than the outer diameter of the upper portion, the upper end surface of the rear cover is formed with a bearing chamber, and the rear cover is formed with a shaft hole through which the shaft passes, a shaft hole is located in the bearing chamber, the rear cover positioning member cooperates with the carrier assembly such that a lower portion of the positioning mandrel is located in the shaft hole, and an outer wall of the lower portion of the positioning mandrel and the bearing chamber The walls are offset.

[Claim 4] The planetary wheel axle press-fit device according to claim 1 or 2 or 3, wherein the base comprises a positioning base on the upper side, a fixed base on the lower side, and a lower portion of the positioning pin is formed. a limiting convex ring protruding outward in the radial direction, the positioning base is formed with an upper through hole for the positioning pin to pass through the upper side portion of the limiting convex ring, and the upper through hole penetrates the positioning base up and down The fixed base is formed with a lower through hole through which the limiting collar passes, and a compression spring is fixed on the lower side of the limiting collar of the positioning pin. The planetary wheel axle press-fit device according to claim 1 or 2 or 3, wherein the number of the positioning pin and the press-fit pin is one.

The planetary wheel axle press fitting device according to claim 3, wherein the press fitting block is formed with a downwardly extending positioning guide post, and the positioning mandrel of the rear cover positioning member is formed with the positioning guide pillar And engaging the second matching hole, the pressing block cooperates with the rear cover positioning member to position the positioning guide post in the second matching hole.

The planetary wheel axle press fitting device according to claim 3 or 6, wherein the positioning sleeve and the positioning mandrel are separately disposed, and the positioning sleeve has a radial cross section arranged to include the positioning core. a through hole of the shaft, the outer wall of the positioning sleeve is formed with a plurality of fixing holes extending radially inward, the fixing hole is in communication with the through groove, the fixing hole is formed with an internal thread, and the screw thread is fitted in the fixing hole, And the screw abuts against the outer wall of the positioning mandrel.

The planetary wheel axle press fitting device according to claim 2, wherein an upper end surface of the base is formed with an end surface positioning groove that cooperates with a lower end surface of the carrier, and the connecting head positioning hole communicates with the end surface positioning groove. The base cooperates with the planet carrier assembly such that the planet carrier is located in the rear end cover positioning groove, and the outer edge of the planet carrier is in contact with the inner wall of the end surface positioning groove;

The connector positioning hole penetrates the base up and down.

The planetary wheel axle pressing and fitting device according to claim 4, wherein the positioning base and the fixing base are fixed by a fastener, and the lower through hole penetrates the fixing base up and down, and the lower through hole a threaded structure is formed and threaded with a threaded block, and a lower end surface of the limiting collar of the positioning pin is formed with a downwardly extending guiding protrusion, and an upper end of the compression spring is sleeved outside the guiding protrusion, and the The upper end of the compression spring abuts against the limiting collar, and the lower end of the compression spring abuts the thread block.

The planetary wheel axle press fitting device according to claim 6, wherein a press-fit plate is disposed under the press-fit block, and the press-fit plate is formed with a guide post through hole for the positioning guide post to pass through. The press-fit pin passes through the press-fit pin through hole, and the press-fit plate has a diameter larger than a diameter of the positioning sleeve.