CN220260074U - Rotor shaft and bearing press-fitting device - Google Patents

Abstract

The utility model belongs to the technical field of rotor shaft and bearing press mounting, and particularly relates to a rotor shaft and bearing press mounting device which comprises a bottom plate, wherein a bearing positioning seat is arranged on the bottom plate, a first yielding hole which is opened upwards and used for yielding a rotor shaft is arranged on the bearing positioning seat, a press and a pressing head which is fixed on the press are arranged above the bearing positioning seat, a guide column is arranged between the pressing head and the bearing positioning seat, a positioning plate which is arranged in the horizontal direction is fixed on the guide column, the positioning plate is provided with a positioning groove which penetrates through from top to bottom and is opened laterally, a positioning block is detachably arranged in the positioning groove, a V-shaped groove used for positioning the rotor shaft is arranged on the positioning block, and a first magnetic part used for sucking the rotor shaft is arranged on the groove wall of the V-shaped groove. The utility model has the advantages of simple adjustment mode, higher precision, and positioning of the rotor shaft only by simple replacement, thereby realizing the coaxial arrangement of the rotor shaft and the bearing and being suitable for parts of different axes.

Description

Rotor shaft and bearing press-fitting device

Technical Field

The utility model belongs to the technical field of press fitting of a rotor shaft and a bearing, and particularly relates to a press fitting device of the rotor shaft and the bearing.

Background

Chinese patent application No. CN201220303126.2 discloses a bearing mounting device, a bearing bracket is arranged under the press-fitting head, and a bearing placing groove is arranged on the bearing bracket; one side of the bearing support is provided with a fixed block which is matched with a rotor shaft of a bearing to be installed, the joint of the fixed block and the rotor shaft is provided with a V-shaped structure which is matched with the rotor shaft, and magnetic steel is arranged on two sides of the V-shaped structure. The fixed block is in threaded connection with one side of the bearing support, and a hole for connecting the fixed block with the locating rack is a long hole.

When the rotor shaft workpieces with different types are met in the scheme, firstly, the bolts in the long holes between the fixed block and the locating frame are unscrewed, so that the fixed block can slide relative to the locating frame, the relative positions of the fixed block and the locating frame are adjusted, and then the bolts are screwed again to adapt to various shaft parts. But when rotor shaft and bearing are at the pressure equipment, need higher positioning accuracy to guarantee axiality between rotor shaft and the bearing, among the above-mentioned scheme, when the relative position of fixed block and locating rack is adjusted, the precision of adjustment is relatively poor and the step is comparatively complicated, need adjust repeatedly many times just can guarantee that the position of fixed block after adjusting can make rotor shaft and V type structure contact time just, rotor shaft and the coaxial setting of bearing.

Disclosure of Invention

The utility model aims to provide a rotor shaft and bearing press-fitting device which is simple in adjustment mode, higher in precision and capable of adapting to different rotor shaft workpieces.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a rotor shaft and bearing pressure equipment device, includes the bottom plate, be equipped with the bearing positioning seat that is used for positioning the bearing on the bottom plate, the bearing positioning seat is equipped with upwards opening and is used for the first hole of stepping down to the rotor shaft, the top of bearing positioning seat is equipped with the press and fixes the pressure head on the press, be fixed with the locating plate that the horizontal direction set up between bottom plate and the pressure head, the locating plate is equipped with runs through from top to bottom and side direction open-ended constant head tank, can dismantle in the constant head tank and be provided with the locating piece, the locating piece is equipped with the V type groove that is used for fixing a position the rotor shaft, be equipped with the first magnet that is used for holding the rotor shaft on the cell wall in V type groove.

In use, the bearing is placed in the bearing positioning seat, the lower end of the rotor shaft is inserted into the inner hole of the bearing, so that the pre-fit between the lower end of the rotor shaft and the bearing is realized, the rotor shaft is adsorbed by the first magnet on the V-shaped groove, so that the positioning of the rotor shaft is realized, and then the press is started, so that the pressing head descends the rotor shaft, and the rotor shaft is pressed into the inner hole of the bearing, so that the press fit between the rotor shaft and the bearing is realized. When the other rotor shaft is pressed and positioned, an operator pulls out the positioning block on the positioning plate and inserts the other positioning block with the same type with the rotor shaft into the positioning plate, and at the moment, the device can press and position the other rotor shaft.

Through the detachable setting of locating piece and locating plate, can directly change whole locating piece, need not to carry out the multiple adjustment of multi-step, this device adjustment mode is simple, and the precision is higher. The positioning blocks are high-precision positioning blocks which are machined and cast in advance, and the positioning blocks are inserted into the positioning grooves of the positioning plates to position the rotor shafts of the same model, so that coaxiality between the rotor shafts and the bearings is guaranteed. Wherein, the fixed of locating plate can be fixed through setting up the guide post, also can be fixed the locating plate through setting up a riser on the bottom plate.

Preferably, the end face of the positioning groove facing the positioning block is provided with a plurality of positioning pins, the axial direction of each positioning pin is parallel to the opening direction of the positioning groove, and the end face of the positioning block facing the positioning groove is provided with a plurality of positioning holes corresponding to the positioning pins one by one.

Through the cooperation of locating pin and locating hole, the locating piece can be more accurate be located the constant head tank, and the locating piece can not take place the skew.

Preferably, the positioning groove is provided with a plurality of first matching holes towards the end face of the positioning groove, the axial direction of the first matching holes is parallel to the opening direction of the positioning groove, a second magnet is fixed in the first matching holes, the end face of the positioning groove towards the positioning groove is provided with a plurality of second matching holes corresponding to the first matching holes one by one, a third magnet is fixed in the second matching holes, and the second magnet and the third magnet are attracted to each other.

The detachable setting between locating plate and the locating piece is realized through the mode that the magnetism is inhaled, through fixing second magnet and third magnet respectively in first mating hole and second mating hole for the constant head tank of locating plate can hug closely with the terminal surface of locating piece contact, thereby makes the location more accurate between the two. The fixing mode of the second magnet and the third magnet can be strong adhesive bonding.

Preferably, the two sides of the positioning groove are respectively provided with a U-shaped groove extending laterally, the openings of the two U-shaped grooves are opposite, the two sides of the positioning block are respectively provided with a rectangular strip matched with the U-shaped grooves, when the rectangular strips are matched with the U-shaped grooves, the upper side and the lower side of the rectangular strips are attached to the U-shaped grooves, and an interval exists between the other side of the rectangular strips and the U-shaped grooves.

The positioning block can be positioned when being inserted through the upper side and the lower side of the rectangular strip being attached to the U-shaped groove. The other side of the rectangular strip of the positioning block is spaced from the U-shaped groove, so that the positioning block is not contacted with the U-shaped groove, and the positioning block can be conveniently replaced when the positioning block is replaced, thereby reducing the friction force between the positioning block and the positioning plate.

Preferably, one side of the locating plate, which is away from the locating block, is provided with a plurality of adjusting parts and a plurality of adjusting holes corresponding to the adjusting parts, the adjusting parts are in threaded fit with the adjusting holes, the adjusting holes are communicated with the locating groove, and the adjusting parts can penetrate through the adjusting holes to prop against the locating block and eject the locating block from the locating groove.

In the processing process of the positioning block, a bit of deviation possibly occurs, so that the positioning block cannot accurately position the rotor shaft, and the adjusting piece rotates in the adjusting hole through the arrangement of the adjusting piece, so that the positioning block is ejected out towards the rotor shaft. And the adjusting piece is in threaded fit with the adjusting hole, so that fine adjustment can be realized, and the precision is high.

Preferably, the two groove walls of the V-shaped groove are respectively provided with a third matching hole, the axial direction of each third matching hole is perpendicular to the groove wall of the V-shaped groove, and each third matching hole is internally fixed with the first magnet.

Through setting up the third mating holes to and at the fixed first magnet in third mating holes for when the rotor shaft was adsorbed, rotor shaft and the cell wall face contact in V type groove, and not direct with first magnet contact, the location is more accurate. The first magnet may be fixed by strong adhesive.

Preferably, the pressing head is provided with a second circular groove with a downward opening and a second abdicating hole with a downward opening, the second abdicating hole is communicated with the center of the bottom of the second circular groove, and the first abdicating hole and the second abdicating hole are coaxially arranged.

Through set up second circular slot and second hole of stepping down on the pressure head, can cooperate first hole and the first circular slot of stepping down to can realize pressing the bearing simultaneously to the both ends of rotor shaft or pressing the bearing to the upper end of rotor shaft.

Preferably, the aperture of the first abdicating hole is larger than the diameter of the lower end of the rotor shaft, and the aperture of the second abdicating hole is larger than the diameter of the upper end of the rotor shaft.

Through above-mentioned setting for when rotor shaft and bearing accomplish the pressure equipment, the upper end of rotor shaft and the lower extreme of rotor shaft can stretch into second hole of stepping down and first hole of stepping down respectively.

Preferably, an annular plate is arranged on the bottom plate, and the hole wall of the inner hole of the annular plate is in contact fit with the outer wall of the bottom of the bearing positioning seat.

The hole wall of the inner hole of the annular plate is matched with the outer edge of the outer wall of the bottom of the bearing positioning seat in a positioning way, so that the bearing positioning seat can be replaced to adapt to press fitting between bearings with different sizes and the rotor shaft.

Preferably, the bottom plate is provided with a plurality of guide posts, the guide posts support the positioning plate jointly, the positioning plate is provided with a plurality of through holes for the guide posts to pass through, the side surface of the positioning plate is provided with a plurality of fixing holes, the axial direction of the fixing holes is perpendicular to the axial direction of the through holes, the fixing holes are communicated with the through holes, and bolts are in threaded fit in the fixing holes.

Through bolt and fixed orifices screw thread fit for the locating plate can be fixed on the guide post, and the locating plate can be adjusted from top to bottom according to the height of rotor, and through the bolt fastening after the adjustment is accomplished, thereby can adapt to the rotor of different axial height.

The utility model has the following advantages: the positioning block is replaced to adapt to the press mounting and positioning of different rotor shafts and bearings, so that the operation is simple, and the steps are concise; the fine adjustment can be performed through the adjusting piece, and the fine adjustment accuracy is high; bearing press-fitting can be performed simultaneously on both ends of the rotor shaft.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model when the rotor shaft is press-fitted with the bearing.

Fig. 3 is a schematic structural view of the locating plate of the present utility model.

Fig. 4 is a schematic structural view of the positioning block according to the present utility model.

Reference numerals: the bearing comprises a bottom plate 1, a guide post 11, a support column 12, a top plate 13, an annular plate 2, a long hole 21, a bearing positioning seat 3, a first circular groove 31, a first abdicating hole 32, a positioning plate 4, a through hole 41, a U-shaped groove 42, an adjusting piece 43, a positioning pin 44, a first matching hole 45, a fixing hole 46, a press 5, a press head 51, a piston rod 52, a second abdicating hole 511, a second circular groove 512, a positioning block 6, a third matching hole 61, a second matching hole 62, a positioning hole 63, a rectangular strip 64, a rotor shaft 100 and a bearing 200.

Detailed Description

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

As shown in fig. 1 and 2, the embodiment discloses a rotor shaft and bearing press-fitting device, which comprises a bottom plate 1, wherein two vertical guide posts 11 and two vertical support posts 12 are arranged on the bottom plate 1, the upper ends of the two guide posts 11 and 12 jointly support a top plate 13, a press 5 is arranged on the top plate 13, the press 5 is a cylinder, a piston rod 52 of the press 5 downwards passes through the top plate 13, the lower end of the piston rod 52 is connected with a pressing head 51, the pressing head 51 is provided with a second circular groove 512 which is downwards opened and a second yielding hole 511 which is downwards opened, the second yielding hole 511 is communicated with the bottom center of the second circular groove 512, the second circular groove 512 is used for positioning a bearing 200, and the second yielding hole 511 is used for yielding the upper end of the rotor shaft 100. The bearing positioning seat 3 for positioning the bearing 200 is arranged below the pressing head 51, the bearing positioning seat 3 is provided with a first circular groove 31 which is opened upwards, the first circular groove 31 is used for positioning the bearing 200, the first abdication hole 32 is communicated with the center of the groove bottom of the first circular groove 31, the first abdication hole 32 is used for abdication of the lower end of the rotor shaft 100, and the first abdication hole 32 and the second abdication hole 511 are coaxially arranged. The outer side of the bottom of the bearing positioning seat 3 is provided with an annular plate 2, the hole wall of an inner hole of the annular plate 2 is in contact fit with the outer wall of the bottom of the bearing positioning seat 3 to form outer edge positioning, two long holes 21 are formed in the annular plate 2, and the long holes 21 are fixed with the bottom plate 1 through bolts (not shown in the figure).

As shown in fig. 1 to 4, a positioning plate 4 is disposed between the pressing head 51 and the bottom plate 1, the positioning plate 4 is provided with two through holes 41, the guide posts 11 respectively pass through the two through holes 41, two sides of the positioning plate 4 are respectively provided with a fixing hole 46, the fixing holes 46 are communicated with the through holes 41, and the positioning plate 4 is fixed on the guide posts 11 by screw-fitting with the fixing holes 46 through bolts (not shown in the drawings). The locating plate 4 is provided with locating grooves which penetrate through from top to bottom and are laterally opened, the opening direction of the locating grooves faces the direction of the rotor shaft 100, locating blocks 6 are detachably arranged in the locating grooves, the locating blocks 6 are provided with V-shaped grooves used for locating the rotor shaft 100, the two groove walls of each V-shaped groove are respectively provided with a third matching hole 61, and a first magnet (not shown in the figure) is adhered in each third matching hole 61 through strong adhesive. The positioning groove of the positioning plate 4 is provided with two positioning pins 44 on the end face facing the positioning block 6, the axial direction of the positioning pins 44 is parallel to the opening direction of the positioning groove, the positioning pins are both facing the rotor shaft 100, and the end face of the positioning block 6 facing the positioning groove is provided with two positioning holes 63 corresponding to the positioning pins 44 one by one. The positioning groove is equipped with two first mating holes 45 on the terminal surface towards locating piece 6, the axial of first mating holes 45 is parallel with the opening direction of positioning groove, two first mating holes 45 are located between two locating pins 44, paste through powerful glue in the first mating holes 45 and be fixed with the second magnet (not shown in the figure), locating piece 6 is equipped with two second mating holes 62 with first mating holes 45 one-to-one, two second mating holes 62 are located between two locating holes 63, paste through powerful glue in the second mating holes 62 and be fixed with the third magnet (not shown in the figure), second magnet and third magnet attractive each other.

The both sides of constant head tank all are equipped with the U type groove 45 that extend towards rotor shaft 100 direction, and the opening of two U type grooves 45 is relative, and locating piece 6 both sides are equipped with respectively with U type groove 45 complex rectangle strip 64, when rectangle strip 64 and U type groove 45 complex, the upper and lower both sides and the laminating of U type groove 45 of rectangle strip 64, exist the interval between the left side or the right side of rectangle strip 64 and corresponding U type groove 45.

The locating plate 4 is equipped with two regulating parts 43 and two regulation holes 45 that correspond with regulating parts 43 on one side that deviates from locating piece 6, regulating parts 43 and regulation hole 45 screw thread fit, regulation hole 45 and constant head tank intercommunication, and the terminal surface of regulating parts 43 offsets with locating piece 6, and regulating parts 43 can pass regulation hole 45 and push out locating piece 6 from the constant head tank. Wherein the adjusting member 43 is a bolt.

In use, the bearing 200 is placed in the first circular groove 31 of the bearing positioning seat 3, the lower end of the rotor shaft 100 is inserted into the inner hole of the bearing 200, so as to realize the pre-fit between the lower end of the rotor shaft 100 and the bearing 200, the rotor shaft 100 is adsorbed by the first magnet on the V-shaped groove, so as to realize the positioning of the rotor shaft 100, and then the press 5 is started, so that the pressing head 51 descends the rotor shaft 100, and the rotor shaft 100 is pressed into the inner hole of the bearing 200, so as to realize the press fit between the rotor shaft 100 and the bearing 200. When the other rotor shaft 100 is pressed and positioned, an operator pulls out the positioning block 6 on the positioning plate 4 and inserts the other positioning block 6 with the same model as the rotor shaft 100 into the positioning plate 4, and at the moment, the device can press and position the other rotor shaft 100. When the upper end of the rotor shaft 100 needs to be pressed with the bearing 200, the upper end of the rotor shaft 100 is sleeved with the bearing 200, so that the upper end of the rotor shaft 100 and the bearing 200 form a pre-fit, the press 5 descends the pressing head 51, the bearing 200 is positioned in the second circular groove 512 of the pressing head 51, and then the press 5 is started to continuously descend the pressing head 51, so that the pressing of the bearing 200 and the upper end of the rotor shaft 100 is completed.

After the positioning block 6 is inserted into the positioning groove, when the first magnet of the positioning block 6 adsorbs the rotor shaft 100, the rotor shaft 100 is inclined towards the V-shaped groove, and at this time, an operator can rotate the adjusting piece 43 to perform fine adjustment, and eject the positioning block 6 from the positioning groove towards the rotor shaft 100, so that the rotor shaft 100 is in a vertical state, and the coaxiality between the rotor shaft 100 and the bearing 200 is ensured in sequence.

Claims (10)

1. The utility model provides a rotor shaft and bearing pressure equipment device, includes the bottom plate, be equipped with the bearing location seat that is used for locating the bearing on the bottom plate, the bearing location seat is equipped with upwards opening and is used for the first hole of stepping down to the rotor shaft, the top of bearing location seat is equipped with the press and fixes the pressure head on the press, be fixed with the locating plate that the horizontal direction set up between bottom plate and the pressure head, its characterized in that: the locating plate is provided with a locating groove which penetrates through the locating plate vertically and is laterally opened, a locating block is detachably arranged in the locating groove, the locating block is provided with a V-shaped groove for locating the rotor shaft, and the groove wall of the V-shaped groove is provided with a first magnet for sucking the rotor shaft.

2. The rotor shaft and bearing press-fit device of claim 1, wherein: the positioning device is characterized in that a plurality of positioning pins are arranged on the end face, facing the positioning block, of the positioning groove, the axial direction of each positioning pin is parallel to the opening direction of the positioning groove, and a plurality of positioning holes corresponding to the positioning pins one by one are formed in the end face, facing the positioning groove, of the positioning block.

3. The rotor shaft and bearing press-fit device of claim 1, wherein: the positioning groove is provided with a plurality of first matching holes towards the end face of the positioning groove, the axial direction of the first matching holes is parallel to the opening direction of the positioning groove, a second magnet is fixed in the first matching holes, the end face of the positioning groove towards the positioning groove is provided with a plurality of second matching holes corresponding to the first matching holes one by one, a third magnet is fixed in the second matching holes, and the second magnet and the third magnet are attracted to each other.

4. A rotor shaft and bearing press-fit device according to claim 1 or 2 or 3, characterized in that: the locating device is characterized in that U-shaped grooves extending laterally are formed in two sides of the locating groove, openings of the two U-shaped grooves are opposite, rectangular strips matched with the U-shaped grooves are respectively arranged on two sides of the locating block, when the rectangular strips are matched with the U-shaped grooves, the upper side and the lower side of the rectangular strips are attached to the U-shaped grooves, and an interval exists between the other side of the rectangular strips and the U-shaped grooves.

5. A rotor shaft and bearing press-fit device according to claim 1 or 2 or 3, characterized in that: the locating plate is equipped with a plurality of regulating part and a plurality of regulation hole that corresponds with the regulating part on one side that deviates from the locating piece, regulating part and regulation hole screw-thread fit, regulation hole and constant head tank intercommunication, the regulating part can pass the regulation hole and support the locating piece and with the locating piece ejecting from the constant head tank.

6. A rotor shaft and bearing press-fit device according to claim 1 or 2 or 3, characterized in that: and the two groove walls of the V-shaped groove are respectively provided with a third matching hole, the axial direction of each third matching hole is perpendicular to the groove wall of the V-shaped groove, and each third matching hole is internally fixed with the first magnet.

7. The rotor shaft and bearing press-fit device of claim 1, wherein: the pressure head is provided with a second circular groove with a downward opening and a second abdicating hole with a downward opening, the second abdicating hole is communicated with the center of the bottom of the second circular groove, and the first abdicating hole and the second abdicating hole are coaxially arranged.

8. The rotor shaft and bearing press-fit device of claim 7, wherein: the aperture of the first abdication hole is larger than the diameter of the lower end of the rotor shaft, and the aperture of the second abdication hole is larger than the diameter of the upper end of the rotor shaft.

9. A rotor shaft and bearing press-fit device according to claim 1 or 2 or 3, characterized in that: the bottom plate is provided with an annular plate, and the hole wall of the inner hole of the annular plate is in contact fit with the outer wall of the bottom of the bearing positioning seat.

10. A rotor shaft and bearing press-fit device according to claim 1 or 2 or 3, characterized in that: the bottom plate is provided with a plurality of guide posts, the guide posts support the positioning plate jointly, the positioning plate is provided with a plurality of through holes for the guide posts to pass through, the side face of the positioning plate is provided with a plurality of fixing holes, the axial direction of the fixing holes is perpendicular to the axial direction of the through holes, the fixing holes are communicated with the through holes, and bolts are in threaded fit in the fixing holes.