CN216940287U

CN216940287U - Auxiliary device for assembling gear and spline shaft

Info

Publication number: CN216940287U
Application number: CN202220332768.9U
Authority: CN
Inventors: 黄浩; 周杨洋
Original assignee: Dongyang Linix Machine Electricity Co Ltd
Current assignee: Dongyang Linix Machine Electricity Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-07-12
Anticipated expiration: 2032-02-17

Abstract

The utility model relates to an assembly auxiliary tool, in particular to an auxiliary device for assembling a gear and a spline shaft. The utility model provides a gear and spline shaft assembly adapted auxiliary device, its characterized in that includes the base, the base is equipped with the first constant head tank of upwards open-ended and first cooperation groove, first constant head tank be located first cooperation groove top and with first cooperation groove intercommunication, first constant head tank width is greater than first cooperation groove width, there is the supporting shoe through elastic component suspension support in the first cooperation inslot, the supporting shoe upper end has to the location arch of week outside extension, supporting shoe up end middle part is recessed in order to be formed with the second constant head tank, first cooperation groove circumference cell wall is sunken to have second cooperation groove in order to constitute, the protruding sliding fit in location is in the second cooperation inslot. The utility model has the advantages of improving the press-fitting precision and avoiding the damage of the gear and the spline shaft.

Description

Auxiliary device for assembling gear and spline shaft

Technical Field

The utility model relates to an assembly auxiliary tool, in particular to an auxiliary device for assembling a gear and a spline shaft.

Background

Generally, the spline shaft and the gear are fixed in an interference fit mode, the gear is placed on the base, the spline shaft is pre-placed at the inner hole of the gear, and finally the spline shaft and the gear are pressed through hydraulic equipment. Chinese patent No. 201921176480.1 discloses a spline shaft press-fitting device, which positions a gear by a gear positioning shaft, and the gear positioning shaft is provided with a positioning hole for preventing a spline shaft from inclining.

The press-fitting device has the following defects: when the gear and the spline shaft are placed in advance, an assembler slightly touches the gear and the spline shaft to drive the gear and the spline shaft to rotate, alignment of a gear key groove and an on-shaft key body is difficult to guarantee during press fitting, damage can be caused to the gear and the spline shaft after press fitting, and the gear and the spline shaft are not coaxial.

Disclosure of Invention

The utility model aims to provide an auxiliary device for assembly, which can improve the press-fitting precision and avoid the damage of a gear and a spline shaft.

In order to achieve the purpose, the utility model adopts the following technical scheme: an auxiliary device for assembling a gear and a spline shaft comprises a base, wherein the base is provided with a first positioning groove and a first matching groove, the first positioning groove is upwards opened and is communicated with the first matching groove, the first positioning groove and the first matching groove are coaxially arranged, the width of the first positioning groove is larger than that of the first matching groove, a supporting block is suspended and supported in the first matching groove through an elastic part, a positioning bulge extending towards the outer circumferential side is arranged at the upper end of the supporting block, a second positioning groove coaxial with the first positioning groove is formed in the middle of the upper end face of the supporting block in a concave mode, the circumferential groove wall of the first matching groove is sunken to form a second matching groove, and the positioning bulge is in sliding fit in the second matching groove; when the gear is placed on the base, a gap exists between the lower end face of the gear and the bottom of the first positioning groove, the upper end of the supporting block extends into an inner hole of the gear, and the positioning protrusion is located in a key groove of the gear.

When the device is used, the gear to be assembled is placed on the base, the gear is supported on the upper end face of the base, the positioning protrusions at the upper ends of the supporting blocks are positioned in the key grooves at the inner hole parts of the gear, the gear is prevented from rotating in a mode of avoiding the supporting blocks from rotating, the gear is prevented from rotating relative to the spline shaft, the press-fitting precision is guaranteed, and the press-fitting damage of the gear and the spline shaft is avoided.

The device can be matched with an automatic assembly line, and the spline shaft can be clamped by a feeding mechanism for automatic equipment so as to avoid the rotation of the spline shaft; the device of the utility model can also be used in manual assembly.

Preferably, two opposite sides of the upper end of the supporting block are respectively provided with a positioning bulge. The two opposite sides of the supporting block are provided with the positioning bulges, so that the positioning effect of the supporting block and the gear can be further improved, and the gear is ensured to be coaxial or parallel to the displacement direction of the pressure head of the press during press mounting.

Preferably, the shape of the inner edge of the cross section of the base is the same as that of the outer edge of the cross section of the supporting block. Through the arrangement, the supporting block is further prevented from inclining relative to the base, and the press-fitting coaxiality is guaranteed.

Preferably, the side wall of the supporting block is provided with a vertically extending guide groove, the base is fixed with a limiting piece, and the end part of the limiting piece extends into the guide groove. Through setting up the guide way, and the locating part tip can stretch into in the guide way to make the supporting shoe upwards and move downwards relative to the locating part, so that avoid the supporting shoe to break away from the base.

Preferably, the base is provided with a fixing groove, the outer end of the fixing groove penetrates through the circumferential outer wall of the base, the inner end of the fixing groove is communicated with the first matching groove, the limiting piece is fixed in the fixing groove, and the extending direction of the fixing groove is parallel to or coaxial with the extending direction of the limiting piece. The limiting piece is laterally arranged on the base, so that the installation is convenient; meanwhile, the limiting piece can be abutted against the supporting seat in a mode of transversely moving the limiting piece, so that the upper position and the lower position of the supporting seat are fixed, and the device has a wider application range.

As preferred, the fixed slot comprises fixed slot inner segment and fixed slot outer segment, the fixed slot inner segment is located the fixed slot outer segment inboard, fixed slot inner segment width is less than the fixed slot outer segment width in order to constitute stair structure, the locating part comprises the thick section of locating part and the thin section of locating part, the thick section sliding fit of locating part is in the cooperation inslot outer segment, the thin section sliding fit of locating part is in the cooperation inslot, the base is equipped with the fixed orifices, the fixed orifices extending direction sets up with the fixed slot extending direction is perpendicular, fixed orifices department screw-thread fit has the mounting, the mounting offsets with base thread tightening and messenger's mounting tip and locating part.

Through setting up the fixed slot to make the locating part can slide from top to bottom in the fixed slot, thereby adjust the last spacing and the lower limit position of supporting seat. The fixing groove and the limiting part form a step structure, so that the step surface of the limiting part can be in contact with the step surface of the fixing groove for positioning, and the limiting part is prevented from inclining relative to the base under the condition that the position of the limiting part is adjustable.

Preferably, the first engaging groove penetrates the base downwards, and a plug is screwed to the lower end of the first engaging groove. The height of the plug is adjusted by rotating the plug, so that the elasticity of the elastic piece is adjusted.

The utility model has the advantages of improving the press fitting precision and avoiding the damage of the gear and the spline shaft.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of one configuration of the present invention in use;

FIG. 3 is a schematic view of a support block of the present invention;

fig. 4 is a schematic structural diagram of a position limiting element according to the present invention.

Detailed Description

The utility model is further described below with reference to the figures and the specific embodiments.

As shown in fig. 1 to 4, the present embodiment discloses an auxiliary device for assembling a gear and a spline shaft, which is used for assisting the assembly of a stepped gear 100 and a spline shaft 200, and includes a base 1, the base 1 is provided with a first positioning groove 11 and a first matching groove 12 which are opened upwards, the first positioning groove 11 is located above the first matching groove 12 and is communicated with the first matching groove 12, the first positioning groove 11 and the first matching groove 12 are coaxially arranged, the width of the first positioning groove 11 is greater than the width of the first matching groove 12, a support block 3 is suspended and supported in the first matching groove 12 through an elastic member 2, two opposite side walls of the support block 3 are respectively provided with a positioning protrusion 31 which extends outwards in the circumferential direction, the upper end surface of the positioning protrusion 31 is flush with the upper end surface of the support block 3, the middle part of the upper end surface of the support block 3 is recessed to form a second positioning groove 32 which is coaxial with the first positioning groove 11, the first matching groove 12 is recessed to form a second matching groove 13, the positioning projection 31 is slidably fitted in the second fitting groove 13; when the gear 100 is placed on the base 1, a gap exists between the lower end surface of the gear 100 and the bottom of the first positioning groove 11, the upper end of the supporting block 3 extends into the inner hole of the gear 100, and the positioning protrusion 31 is located in the key groove of the gear 100.

Wherein, the shape of the inner edge of the cross section of the base 1 is the same as the shape of the outer edge of the cross section of the supporting block 3. The first matching groove 12 and the second matching groove 13 both penetrate through the base 1 downwards, and a plug 19 is matched with the inner thread at the lower end of the first matching groove 12.

The lateral wall of the supporting block 3 is provided with a guide groove 33 extending vertically, the base 1 is further fixed with a limiting part 4, and the end part of the limiting part 4 extends into the guide groove 33. Base 1 is equipped with the fixed slot, and 1 circumference outer wall of base is run through to the fixed slot outer end, and fixed slot inner communicates with first cooperation groove 12, and in locating part 4 was fixed in the fixed slot, fixed slot extending direction was parallel or coaxial setting with locating part 4 extending direction. The fixed slot comprises fixed slot inner segment 14 and fixed slot outer segment 15, fixed slot inner segment 14 is located fixed slot outer segment 15 inboardly, fixed slot inner segment 14 width is less than fixed slot outer segment 15 width in order to constitute the stair structure, locating part 4 comprises locating part thick section 41 and locating part thin section 42, locating part thick section 41 sliding fit is in cooperation inslot section 15, locating part thin section 42 sliding fit is in cooperation inslot section 14, base 1 is equipped with the fixed orifices, the fixed orifices extending direction sets up with fixed slot extending direction is perpendicular, the screw-thread fit of fixed orifices department has mounting 5, mounting 5 is the column and offsets with base 1 screw-thread fixation, 5 tip of mounting and 4 sides of locating part.

Claims

1. An auxiliary device for assembling a gear and a spline shaft is characterized by comprising a base, wherein the base is provided with a first positioning groove and a first matching groove which are opened upwards, the first positioning groove is positioned above the first matching groove and communicated with the first matching groove, the first positioning groove and the first matching groove are coaxially arranged, the width of the first positioning groove is larger than that of the first matching groove, a supporting block is suspended and supported in the first matching groove through an elastic part, a positioning bulge extending towards the outer circumferential side is arranged at the upper end of the supporting block, a second positioning groove which is coaxial with the first positioning groove is formed in the middle of the upper end surface of the supporting block, the circumferential groove wall of the first matching groove is sunken to form a second matching groove, and the positioning bulge is in sliding fit in the second matching groove;

when the gear is placed on the base, a gap exists between the lower end face of the gear and the bottom of the first positioning groove, the upper end of the supporting block extends into an inner hole of the gear, and the positioning protrusion is located in a key groove of the gear.

2. The auxiliary device for assembling a gear and a spline shaft according to claim 1, wherein the supporting block has a positioning protrusion on each of opposite sides of an upper end thereof.

3. The gear and spline shaft assembly aid of claim 1, wherein the base cross-section has an inner edge that is the same shape as the support block cross-section outer edge.

4. The auxiliary device for assembling the gear and the spline shaft according to claim 1, wherein the supporting block has a vertically extending guiding groove on a side wall thereof, and a stopper is fixed to the base, and an end of the stopper extends into the guiding groove.

5. The auxiliary device for assembling the gear and the spline shaft as claimed in claim 4, wherein the base has a fixing groove, an outer end of the fixing groove penetrates through a circumferential outer wall of the base, an inner end of the fixing groove is connected to the first engaging groove, the position limiting member is fixed in the fixing groove, and an extending direction of the fixing groove is parallel to or coaxial with an extending direction of the position limiting member.

6. The auxiliary device for assembling the gear and the spline shaft according to claim 5, wherein the fixing groove is composed of an inner fixing groove section and an outer fixing groove section, the inner fixing groove section is located inside the outer fixing groove section, the width of the inner fixing groove section is smaller than that of the outer fixing groove section to form a step structure, the limiting member is composed of a thick limiting member section and a thin limiting member section, the thick limiting member section is slidably fitted in the outer fitting groove section, the thin limiting member section is slidably fitted in the inner fitting groove section, the base is provided with a fixing hole, the extending direction of the fixing hole is perpendicular to the extending direction of the fixing groove, a fixing member is in threaded fit with the fixing hole, and the fixing member is in threaded fit with the base and enables the end of the fixing member to abut against the limiting member.

7. The gear and spline shaft assembly aid of claim 1, wherein the first engagement slot extends downwardly through the base, and a plug is threadably engaged with a lower end of the first engagement slot.