Gear and gear hub press-fitting assembly

Abstract

The utility model relates to the technical field of automobile part manufacturing, and discloses a gear hub press-fitting assembly which comprises a positioning part and a locking part, the positioning part comprises a base disc, a supporting disc, a plurality of positioning blocks, a positioning shaft and the locking part, the supporting disc is rotationally installed on the base disc, the positioning blocks are used for positioning a gear hub, the positioning shaft is used for positioning a gear, and the locking part is used for locking the gear hub. The supporting disc is locked with the base disc through a locking piece; the press-fitting part is used for press-fitting the gear and the gear hub together; and the workbench is used for installing the positioning part and the press-fitting part. According to the gear hub press-fitting assembly, the distance between the multiple positioning blocks and the positioning shaft can be adjusted by rotating the supporting disc, so that gear hubs of different sizes can be positioned, the gear hubs of different sizes can be positioned by replacing the matched positioning shaft, and the gear hub press-fitting assembly is convenient to use. And therefore, press fitting of gears and gear hubs of different sizes is completed, and the applicability of the gear and gear hub press fitting assembly is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts manufacturing, more specifically, it relates to gear gear hub press -fitting assembly. BACKGROUND

[0002] In the manufacture of automobile gearbox, in order to improve production efficiency, reduce the machining difficulty of gear and realize more compact structure design, gear and gear hub are often connected together by welding, before welding gear and gear hub, gear and gear hub are usually press -fitted, so that gear and gear hub form close contact, provide good basis for subsequent welding process.

[0003] The existing gear gear hub press -fitting assembly can only position and press -fit single size gear and gear hub, resulting in poor applicability of gear gear hub press -fitting assembly. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects in prior art, provide a gear gear hub press -fitting assembly that can position gear and gear hub of different sizes and complete press -fitting through adjusting positioning part.

[0005] To achieve the above object, the technical scheme of the utility model provides a gear gear hub press -fitting assembly, comprising:

[0006] Positioning part, including base disc, support disc, positioning block, positioning shaft and locking piece, the support disc is rotatably installed on the base disc, the support disc is used to provide support for gear hub, the positioning block is provided with multiple, and the spacing between multiple positioning blocks and the positioning shaft is same, multiple positioning blocks are used for positioning gear hub, the support disc is provided with guiding groove in sliding connection with the positioning block, the base disc is provided with driving structure, the bottom of the positioning block is provided with driven structure matched with the driving structure, the positioning shaft is detachably installed on the support disc, the positioning shaft is used for positioning gear, when rotating the support disc, the driving structure drives the positioning block to move along the guiding groove in the direction close to or away from the positioning shaft, the support disc is locked with the base disc through locking piece;

[0007] Press -fitting part is used for press -fitting gear and gear hub together;

[0008] Workbench is connected to the positioning part and the press -fitting part, and is used for installing the positioning part and the press -fitting part.

[0009] It should be noted that the base disc is fixedly installed on the workbench, the number of the guide grooves is consistent with the number of the positioning blocks, when the support disc is rotated, the driving structure cooperates with the driven structure, thereby driving the plurality of positioning blocks to move along the length direction of the corresponding guide groove, the spacing between the positioning blocks and the positioning shaft changes, in this process, the spacing between each positioning block and the positioning shaft is the same, by rotating the support disc, the spacing between the positioning blocks and the positioning shaft is changed, when the tooth hub is placed in the center of the support disc, the four positioning blocks are all attached to the outer surface of the tooth hub, different sizes of tooth hubs can be positioned, for different sizes of gears, the corresponding positioning shaft can be replaced to position the gears, after positioning, the center line of the tooth hub and the center line of the gear are all coincident with the axis of the positioning shaft;

[0010] The tooth hub is provided with an assembly groove, after positioning, the press-fitting part presses part of the gear into the assembly groove, so that the gear and the tooth hub form close contact.

[0011] In the embodiment, the length direction of the guide groove is arranged along the radial direction of the support disc, and the positioning shaft is installed on the support disc through bolts.

[0012] By using the gear tooth hub press-fitting assembly, the spacing between the plurality of positioning blocks and the positioning shaft can be adjusted by rotating the support disc, thereby different sizes of tooth hubs can be positioned, by replacing the corresponding positioning shaft, different sizes of tooth hubs can be positioned, and then the press-fitting of different sizes of gears and tooth hubs is completed, and the applicability of the gear tooth hub press-fitting assembly is greatly improved.

[0013] As preferred, the top of the base disc is provided with an installation groove, a fixed shaft fixedly connected with the base disc is arranged in the installation groove, the fixed shaft is coaxially arranged with the positioning shaft, the support disc is rotationally connected with the fixed shaft, and a limiting plate is detachably installed on the top of the base disc, and the bottom surface of the limiting plate is attached to the top surface of the support disc. Such a design can ensure stable rotation of the support disc.

[0014] As preferred, the driving structure is a spiral groove, the driven structure is an arc plate, the spiral groove is arranged at the bottom of the installation groove, the arc plate is fixedly connected with the bottom of the positioning block, and the arc plate is slidably connected with the spiral groove. When the support disc is rotated, the spiral groove extrudes the arc plate to drive the positioning block to move along the length direction of the guide groove, thereby adjusting the spacing between the positioning block and the positioning shaft.

[0015] As preferred, the locking member is a clamping handle, a threaded hole is arranged in the base disc and communicates with the installation groove, the clamping handle is threadedly connected with the threaded hole, and the clamping handle abuts against the support disc. Such a design can release the support disc or lock the support disc by adjusting the clamping handle.

[0016] As preferred, a handle is installed on the support disc. With such design, the support disc can be rotated by rotating the handle.

[0017] As preferred, the positioning shaft comprises a support shaft, a first guide shaft and a second guide shaft connected in sequence from bottom to top and coaxially arranged, the support shaft is used for supporting the gear hub, the diameter of the first guide shaft is larger than that of the second guide shaft, and the first guide shaft and the second guide shaft are both used for guiding the press fitting of the gear. With such design, the quality of the press fitting of the gear and the gear hub can be improved.

[0018] As preferred, the press fitting part comprises a driving member, a press plate and a press head, the workbench is fixedly installed with a support plate, the driving member is fixedly installed on the support plate, the press plate is fixedly connected to the driving end of the driving member, the press head is detachably installed on the press plate, and the center line of the press head coincides with the axis of the positioning shaft. With such design, the driving member drives the press plate to move downward, thereby driving the press head to move downward, and the gear and the gear hub can be press fitted together.

[0019] As preferred, the workbench is fixedly installed with a guide column, and the press plate is provided with a through hole in sliding fit with the guide column. With such design, the guide column can play a guiding role, thereby ensuring the stability of the press fitting of the press head.

[0020] The gear and gear hub press fitting assembly has the advantages that:

[0021] The gear and gear hub press fitting assembly has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the three-dimensional structure of the gear hub;

[0023] Figure 2 is a schematic view of the three-dimensional structure of the gear;

[0024] Figure 3 is a schematic view of the three-dimensional structure of the gear and gear hub after press fitting;

[0025] Figure 4 is a schematic view of the three-dimensional structure of the gear and gear hub press fitting assembly (including the gear and the gear hub);

[0026] Figure 5 is a schematic view of the overall structure of the gear and gear hub press fitting assembly;

[0027] Figure 6 is a schematic view of a three-dimensional structure of a supporting disc;

[0028] Figure 7 is a schematic view of a three-dimensional structure of a positioning part after positioning of a gear and a gear hub is completed;

[0029] Figure 8 is a schematic view of a three-dimensional structure of a base disc;

[0030] Figure 9 is a schematic view of a three-dimensional structure of a positioning block;

[0031] Figure 10 is a schematic view of a three-dimensional structure of a positioning shaft;

[0032] Figure 11 is a schematic view of a three-dimensional structure of a pressing plate.

[0033] In the drawings: 100, positioning part; 110, base disc; 111, mounting groove; 112, fixing shaft; 113, limiting plate; 114, helical groove; 115, screw hole; 120, supporting disc; 121, guide groove; 122, threaded hole; 130, positioning block; 131, arc plate; 140, positioning shaft; 141, supporting shaft; 1411, counterbore; 142, first guide shaft; 143, second guide shaft; 150, tightening handle; 160, handle; 170, inner hexagonal bolt;

[0034] 200, pressing part; 210, driving piece; 220, pressing plate; 221, through hole; 230, pressing head;

[0035] 300, workbench; 310, supporting plate; 320, guide column;

[0036] 400, gear hub; 410, assembly groove; 420, annular inner edge;

[0037] 500, gear; 510, annular sleeve; 520, shaft hole. DETAILED DESCRIPTION

[0038] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that these implementations are discussed in order to provide a better understanding of the subject matter described herein. Changes to the function and arrangement of elements discussed can be made without departing from the scope of the subject matter as covered by the present description. Various examples can omit, substitute, or add various procedures or components as appropriate. Also, features described with respect to some examples can be combined in other examples.

[0039] In order to better understand the present application, the following will be combined with the accompanying drawings Figures 1-11The gear hub press-fit assembly of this utility model is described in detail.

[0040] Example 1:

[0041] like Figures 1-7 As shown, the gear hub press-fit assembly includes:

[0042] The positioning unit 100 includes a base plate 110, a support plate 120, positioning blocks 130, a positioning shaft 140, and a locking element. The support plate 120 is rotatably mounted on the base plate 110, and a handle 160 is mounted on the support plate 120. The support plate 120 provides support for the gear hub 400. Multiple positioning blocks 130 are provided, and the distance between the multiple positioning blocks 130 and the positioning shaft 140 is the same. The multiple positioning blocks 130 are used to position the gear hub 400. The support plate 120 has a through-hole mechanism... The positioning block 130 is slidably connected to the guide groove 121. The base plate 110 is provided with a drive structure. The bottom of the positioning block 130 is provided with a driven structure that cooperates with the drive structure. The positioning shaft 140 is detachably mounted on the support plate 120. The positioning shaft 140 is used to position the gear 500. When the support plate 120 is rotated, the drive structure drives the positioning block 130 to move along the guide groove 121 toward or away from the positioning shaft 140. The support plate 120 is locked to the base plate 110 by a locking member.

[0043] The press-fitting part 200 is used to press-fit the gear 500 and the gear hub 400 together;

[0044] The worktable 300 is connected to the positioning part 100 and the pressing part 200 and is used to install the positioning part 100 and the pressing part 200.

[0045] It should be noted that the base plate 110 is fixedly installed on the worktable 300. The number of guide grooves 121 is the same as the number of positioning blocks 130. When the support plate 120 is rotated, the drive structure and the driven structure cooperate to drive multiple positioning blocks 130 to move along the length direction of the corresponding guide grooves 121. The distance between the positioning blocks 130 and the positioning shaft 140 changes. During this process, the distance between each positioning block 130 and the positioning shaft 140 is the same. By rotating the support plate 120, the distance between the positioning blocks 130 and the positioning shaft 140 is changed so that when the gear hub 400 is placed in the center of the support plate 120, all four positioning blocks 130 are in contact with the outer surface of the gear hub 400. Gear hubs 400 of different sizes can be positioned. For gears 500 of different sizes, the appropriate positioning shaft 140 can be replaced to position the gear 500. After positioning, the center line of the gear hub 400 and the center line of the gear 500 are both coincident with the axis of the positioning shaft 140.

[0046] By rotating the handle 160, the support disc 120 can be driven to rotate, facilitating the rotation adjustment of the support disc 120, and the gear hub 400 is provided with an assembly groove 410, and after positioning is completed, the pressing assembly 200 presses part of the gear 500 into the assembly groove 410, so that the gear 500 and the gear hub 400 are in close contact.

[0047] In the embodiment, the length direction of the guide groove 121 is arranged along the radial direction of the support disc 120, and the positioning shaft 140 is bolted on the support disc 120.

[0048] By using the gear gear hub pressing assembly, the spacing between the plurality of positioning blocks 130 and the positioning shaft 140 can be adjusted by rotating the support disc 120, so that the gear hub 400 of different sizes can be positioned, and by replacing the positioning shaft 140 that is suitable for positioning, the gear hub 400 of different sizes can be positioned, and the pressing assembly of the gear 500 and the gear hub 400 of different sizes can be completed, thereby greatly improving the applicability of the gear gear hub pressing assembly.

[0049] Embodiment 2:

[0050] As an optimization of embodiment 1, as shown in Figure 5 、 Figure 7 and Figure 8 , the top of the base disc 110 is provided with a mounting groove 111, the mounting groove 111 is provided with a fixed shaft 112 fixedly connected with the base disc 110, and the fixed shaft 112 is coaxially arranged with the positioning shaft 140, the support disc 120 is rotatably connected with the fixed shaft 112, and the top of the base disc 110 is detachably provided with a limiting plate 113, and the bottom surface of the limiting plate 113 is attached to the top surface of the support disc 120.

[0051] It should be noted that during the rotation of the support disc 120, the limiting plate 113 can prevent the support disc 120 from being separated from the fixed shaft 112, and ensure the stable rotation of the support disc 120, thereby ensuring the good cooperation between the driving structure and the driven structure.

[0052] In the embodiment, the mounting groove 111 is circular, the fixed shaft 112 is an integral structure with the base disc 110, the limiting plate 113 is annular, and the inner diameter of the limiting plate 113 is smaller than the outer diameter of the support disc 120, and the limiting plate 113 is bolted on the base disc 110.

[0053] Embodiment 3:

[0054] As an optimization of embodiment 2, as shown in Figures 7-9 , the driving structure is provided as a spiral groove 114, and the driven structure is provided as an arc plate 131, the spiral groove 114 is arranged at the bottom of the mounting groove 111, the arc plate 131 is fixedly connected to the bottom of the positioning block 130, and the arc plate 131 is slidably connected with the spiral groove 114.

[0055] It should be noted that rotating the support disc 120, the support disc 120 pushes the positioning block 130 to move circumferentially, in this process, the inner wall of the spiral groove 114 extrudes the side wall of the arc plate 131, so that the positioning block 130 moves along the length direction of the guide groove 121, changes the distance between the positioning block 130 and the positioning shaft 140.

[0056] In this embodiment, the arc plate 131 and the positioning block 130 are integrated.

[0057] Embodiment 4:

[0058] As an optimization of embodiment 3, as shown in Figure 5 and Figure 8 , the locking piece is provided as a clamping handle 150, the base disc 110 is provided with a threaded hole 115 penetratingly, and the threaded hole 115 is in communication with the mounting groove 111, the clamping handle 150 is threadedly connected with the threaded hole 115, and the clamping handle 150 abuts against the support disc 120.

[0059] It should be noted that loosening the clamping handle 150, the clamping handle 150 is separated from the support disc 120, the support disc 120 can rotate around the fixed shaft 112, and tightening the clamping handle 150, the clamping handle 150 abuts against the support disc 120, under the locking force of the clamping handle 150 and the support disc 120, the support disc 120 cannot rotate around the fixed shaft 112, and the position of the positioning block 130 is also fixed. Multiple threaded holes 115 and multiple clamping handles 150 can be provided according to actual conditions, so that the support disc 120 can be completely locked after the position adjustment of the positioning block 130 is completed.

[0060] Embodiment 5:

[0061] As an optimization of embodiment 4, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 10 , the positioning shaft 140 includes a support shaft 141, a first guide shaft 142 and a second guide shaft 143 connected in sequence and coaxially from bottom to top, the support shaft 141 is used for supporting the gear hub 400, the diameter of the first guide shaft 142 is greater than that of the second guide shaft 143, and the first guide shaft 142 and the second guide shaft 143 are both used for guiding the press fitting of the gear 500.

[0062] It should be noted that the tooth hub 400 has an annular inner edge 420, and the inner hole of the annular inner edge 420 is the assembly groove 410. The gear 500 has an annular sleeve 510 and a shaft hole 520. After the tooth hub 400 is positioned between the plurality of positioning blocks 130, the tooth hub 400 is attached to the top surface of the support disc 120, and the bottom surface of the annular inner edge 420 is attached to the top surface of the support shaft 141. The support shaft 141 supports the annular inner edge 420 to prevent the annular inner edge 420 from being pressed downward by the annular sleeve 510 during the pressing process, which may cause the pressed product to be unqualified.

[0063] After the gear 500 is positioned on the positioning shaft 140, the first guide shaft 142 is attached to the inner wall of the annular sleeve 510, and the second guide shaft 143 is attached to the hole wall of the shaft hole 520. During the pressing process, the first guide shaft 142 and the second guide shaft 143 jointly guide the pressing of the gear 500, thereby improving the precision of the pressing.

[0064] After the pressing is completed, the bottom surface of the annular sleeve 510 is slightly higher than the bottom surface of the annular inner edge 420, so as to facilitate the subsequent welding of the gear 500 and the tooth hub 400 by welding the annular sleeve 510 and the annular inner edge 420 together.

[0065] The annular sleeve 510 and the annular inner edge 420 are in clearance fit. For example, the outer diameter of the annular sleeve 510 is 78 mm, the inner diameter of the annular inner edge 420 is 78.02 mm, the thickness of the annular inner edge 420 is 6 mm, and the distance between the bottom surface of the annular sleeve 510 and the bottom surface of the annular inner edge 420 is 0.2 mm.

[0066] In this embodiment, the support shaft 141, the first guide shaft 142 and the second guide shaft 143 are of an integrated structure. The support shaft 141 has a plurality of counterbores 1411 penetratingly arranged on the outer ring thereof. The support disc 120 has a plurality of threaded holes 122 corresponding to the plurality of counterbores 1411. The positioning shaft 140 is installed on the support disc 120 by means of the inner hexagonal bolt 170. After the inner hexagonal bolt 170 is arranged in the counterbores 1411 and the threaded holes 122, the head of the inner hexagonal bolt 170 is completely located in the counterbores 1411, and does not affect the placement of the tooth hub 400.

[0067] Embodiment 6:

[0068] As an optimization of Embodiment 5, as shown in Figure 5 The pressing part 200 includes a driving member 210, a pressing plate 220 and a pressing head 230. The workbench 300 is fixedly installed with a support plate 310. The driving member 210 is fixedly installed on the support plate 310. The pressing plate 220 is fixedly connected to the driving end of the driving member 210. The pressing head 230 is detachably installed on the pressing plate 220. The center line of the pressing head 230 coincides with the axis of the positioning shaft 140.

[0069] It should be noted that the driving member 210 drives the pressing plate 220 to move downward, thereby driving the pressing head 230 to move downward, and the bottom of the annular sleeve 510 is pressed into the assembly groove 410, so that the gear 500 and the gear hub 400 are pressed and assembled together, and when the pressing head 230 is damaged, only the pressing head 230 needs to be replaced, which is beneficial to reduce the maintenance cost of the gear gear hub pressing assembly.

[0070] In the embodiment, the driving member 210 is an electric cylinder, so as to realize more accurate pressing, and ensure that the pressing depth of the gear 500 meets the set requirement, so as to facilitate subsequent welding.

[0071] Embodiment 7:

[0072] As an optimization of embodiment 6, as shown in Figure 5 and Figure 11 The workbench 300 is fixedly provided with guide columns 320, and the pressing plate 220 is provided with through holes 221 which are in sliding fit with the guide columns 320.

[0073] It should be noted that the guide column 320 plays a guiding role in the movement of the pressing plate 220, so as to ensure the stability of the movement of the pressing plate 220, so that the pressing head 230 can stably press the gear 500 and the gear hub 400 together, and the quality of the pressing is improved.

[0074] In the embodiment, the guide column 320 and the through hole 221 are both provided with two, and the two guide columns 320 are symmetrically arranged about the axis line of the positioning shaft 140.

[0075] The above describes the embodiments of the utility model in combination with the drawings, but the embodiments are not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the embodiments without departing from the scope of the embodiments and the scope protected by the claims, and all the forms belong to the protection of the embodiments.

Claims

1. A gear tooth hub press-fit assembly, characterized by, The utility model relates to a gear wheel and gear hub press fitting device, including: Positioning part (100), including base disc (110), support disc (120), positioning block (130), positioning shaft (140) and locking piece, the support disc (120) rotationally installed on the base disc (110), the support disc (120) is used to provide support for gear hub (400), the positioning block (130) is provided with multiple, and the spacing between multiple positioning block (130) and positioning shaft (140) is same, multiple positioning block (130) is used to position gear hub (400), the support disc (120) is provided with the guide groove (121) of sliding connection with the positioning block (130) through, the base disc (110) is provided with drive structure, the bottom of positioning block (130) is provided with driven structure with drive structure cooperation, the positioning shaft (140) can be detachably installed on the support disc (120), the positioning shaft (140) is used to position gear (500), when rotating the support disc (120), drive structure drives positioning block (130) along guide groove (121) moves towards the direction of approaching or away from positioning shaft (140), the support disc (120) is locked with base disc (110) through locking piece; Press fitting part (200) is used for press fitting gear (500) and gear hub (400) together; Workbench (300) is connected to the positioning part (100) and the press fitting part (200), and is used for installing the positioning part (100) and the press fitting part (200).

2. The gear hub press assembly of claim 1, wherein, The base disc (110) top is provided with mounting groove (111), the mounting groove (111) is provided with fixed shaft (112) fixedly connected with the base disc (110), and the fixed shaft (112) is coaxially arranged with the positioning shaft (140), the support disc (120) is rotatably connected with the fixed shaft (112), and the base disc (110) top is detachably provided with a limiting plate (113), and the bottom surface of the limiting plate (113) is attached to the top surface of the support disc (120).

3. The gear hub press assembly of claim 2, wherein, The drive structure is provided as a spiral groove (114), the driven structure is provided as an arc plate (131), the spiral groove (114) is provided in the bottom of the mounting groove (111), the arc plate (131) is fixedly connected to the bottom of the positioning block (130), and the arc plate (131) is slidably connected with the spiral groove (114).

4. The gear hub press assembly of claim 2, wherein, The locking piece is provided as a clamping handle (150), the base disc (110) is provided with a threaded hole (115) through, and the threaded hole (115) is communicated with the mounting groove (111), the clamping handle (150) is threadedly connected with the threaded hole (115), and the clamping handle (150) is abutted with the support disc (120).

5. The gear hub press fit assembly of claim 1, wherein, The support disc (120) is provided with a handle (160).

6. The gear hub press fit assembly of claim 1, wherein, The positioning shaft (140) comprises a support shaft (141), a first guide shaft (142) and a second guide shaft (143) connected in sequence and coaxially arranged from bottom to top, the support shaft (141) is used for supporting a gear hub (400), the diameter of the first guide shaft (142) is greater than that of the second guide shaft (143), and the first guide shaft (142) and the second guide shaft (143) are both used for guiding press fitting of a gear (500).

7. The gear hub press fit assembly of claim 1, wherein, The press fitting part (200) comprises a driving piece (210), a pressing plate (220) and a pressing head (230), the workbench (300) is fixedly installed with a support plate (310), the driving piece (210) is fixedly installed on the support plate (310), the pressing plate (220) is fixedly connected to a driving end of the driving piece (210), the pressing head (230) is detachably installed on the pressing plate (220), and the center line of the pressing head (230) coincides with the axis of the positioning shaft (140).

8. The gear hub press fit assembly of claim 7, wherein, The workbench (300) is fixedly installed with a guide column (320), and the pressing plate (220) is provided with a through hole (221) in sliding fit with the guide column (320).

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