CN217890078U

CN217890078U - Rolling device for improving surface supporting rate of oil pump driving chain wheel

Info

Publication number: CN217890078U
Application number: CN202023008093.2U
Authority: CN
Inventors: 夏海军; 吴昌清; 郭平
Original assignee: Porite Yangzhou Technology And Industry Co ltd
Current assignee: Porite Yangzhou Technology And Industry Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2022-11-25
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a rolling device for improving the surface support rate of an oil pump driving chain wheel, which comprises a servo press, a rolling cutter and a rolling disc; the servo press machine can set pressure and detect the pressure, and a main shaft of the servo press machine can correspondingly rotate and move up and down. The utility model realizes the improvement of the surface support rate of the oil pump driving chain wheel in a rolling way; the up-and-down movement and the rotation of a rolling cutter with the lower end detachably mounted are realized by arranging a servo press capable of rotating and moving up and down, a station groove is arranged on a rolling disc below the servo press and used for limiting the movement of a rotatable oil pump driving chain wheel, and the position is adjusted to continue rolling after the rolling of one station can be completed; the utility model discloses can show the peak value that reduces the powder granule, improve the support rate of terminal surface to reduce friction in the use, reduced the friction loss, prolong the life of part.

Description

Rolling device for improving surface supporting rate of oil pump driving chain wheel

Technical Field

The utility model relates to a surface treatment technical scheme of machine parts, a rolling press device for improving oil pump drive sprocket surface support rate specifically says so.

Background

As shown in fig. 4, the support ratio (TP value) of the surface of the product is a profile support length ratio curve Rmr (c), referred to as support ratio (TP), a straight line parallel to the centerline moves downward from the peak top to a horizontal position (movement distance c) within the evaluation length, and the ratio of the length Ml (c) of the solid material of the profile to the evaluation length ln; namely:

TP value = Rmr (c) = (L1 + L2+ L3+.... + Lx)/Ln;

the surface profile of an oil pump driving chain wheel in a gearbox is machined by turning and grinding in the prior art, the surface roughness of an end face is improved in a material cutting mode, the surface roughness of the end face can be stably ensured by traditional cutting and grinding, but the stable lifting support rate TP value cannot be ensured, and because the surface of a product has a large number of gaps, even if the material on the surface layer is cut, the inner structure still appears on the surface layer in a gap shape.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rolling device for improving the surface support rate of an oil pump driving chain wheel aiming at the defects of the prior art; the technical scheme is as follows:

a rolling device for improving the surface support rate of an oil pump driving chain wheel comprises a servo press, a rolling cutter and a rolling disc; the servo press machine can set pressure and detect the pressure, and a main shaft of the servo press machine can correspondingly rotate and move up and down; the upper end of the rolling cutter is detachably mounted with a main shaft of the servo press through a clamping part, and the lower end of the rolling cutter is correspondingly provided with a roller pin; the rolling needles are arranged in a plurality and are uniformly arranged in an annular interval manner, and can roll and rotate on the rolling cutter; and the rolling disc is provided with a station groove corresponding to the position of the rolling cutter, the oil pump driving chain wheel can be correspondingly fixed in the station groove, and the surface of the oil pump driving chain wheel is rolled through the roller pin on the rolling cutter corresponding to the upper part.

Preferably, the middle part of the rolling cutter is also provided with a rolling handle.

Preferably, the clamping part of the upper end face of the rolling cutter is of a stepped groove structure; and the end part of the main shaft of the servo press is also arranged into a stepped shaft shape.

Preferably, the rolling device also comprises a bottom rotating mechanism, and the rolling discs are correspondingly arranged on the bottom rotating mechanism and can correspondingly drive the rolling discs to rotate; and the rolling discs are provided with corresponding station grooves, and the rolling discs are rotated to enable the positions of the rolling discs to correspond to the positions of the rolling cutters above the rolling discs.

Preferably, at least four rolling needles on the rolling cutter are uniformly arranged at intervals; and at least six rolling discs with station grooves are uniformly arranged at intervals.

Preferably, the rolling disc is also provided with an oil leakage hole communicated with the station groove.

Preferably, the roller pins in the step are made of cemented carbide roller pins, and the surface roughness of the roller pins is less than 0.1.

Has the advantages that: the utility model discloses following beneficial effect has: the utility model realizes the improvement of the surface support rate of the oil pump driving chain wheel by rolling; the vertical movement and the rotation of a rolling cutter with the lower end detachably mounted are realized by arranging a servo press capable of rotating and moving up and down, a station groove is arranged on a rolling disc below the servo press and is used for fixedly mounting an oil pump driving chain wheel, and the position is adjusted to continue rolling after the rolling of one station is finished; the utility model discloses can show the peak value that reduces the powder granule, improve the support rate of terminal surface to reduce friction in the use, reduced the friction loss, prolong the life of part.

Drawings

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

FIG. 2 is a top-down mounting view of FIG. 1;

FIG. 3 is a diagram of a drive sprocket for an oil pump in the transmission;

FIG. 4 is a graph of oil pump drive sprocket surface support length rate before rolling;

fig. 5 is a graph of oil pump drive sprocket surface support length rate after rolling.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 and 2, a rolling device for improving the surface support rate of an oil pump driving sprocket comprises a servo press 1, a rolling cutter 2 and a rolling disc 3; the servo press machine 1 can set pressure and detect the pressure, and the main shaft 4 of the servo press machine 1 can correspondingly rotate and move up and down; the upper end of the rolling cutter 2 is detachably mounted with a main shaft 4 of the servo press 1 through a clamping part 5, and the lower end of the rolling cutter 2 is correspondingly provided with a roller pin 6; the rolling needles 6 are arranged in a plurality and are uniformly arranged in an annular interval manner, and can roll and rotate on the rolling cutter 2; and a working position groove 7 corresponding to the position of the rolling cutter 2 is arranged on the rolling disc 3, the oil pump driving sprocket 8 can be correspondingly fixed in the working position groove 7, and the surface of the oil pump driving sprocket 8 is rolled through the roller pin 6 on the rolling cutter 2 corresponding to the upper part.

The middle part of the rolling cutter 2 is also provided with a rolling handle 9; a clamping part 5 on the upper end surface of the rolling cutter 2 is arranged to be of a stepped groove structure; and the end of the main shaft 4 of the servo press 1 is also provided in a stepped shaft shape.

The rolling device further comprises a bottom rotating mechanism 10, and the rolling discs 3 are correspondingly arranged on the bottom rotating mechanism 10 and can correspondingly drive the rolling discs 3 to rotate; the rolling discs 3 are uniformly arranged at annular intervals, and corresponding station grooves 7 are arranged on the rolling discs 3 and correspond to the positions of the rolling cutters 2 above the corresponding station grooves.

At least four rolling needles 6 on the rolling cutter 2 are uniformly arranged at intervals; at least six rolling discs 3 are uniformly arranged at intervals; the rolling disc 3 is also provided with an oil leakage hole 11 communicated with the station groove 7; the roller pins 6 are made of hard alloy roller pins 6, and the surface roughness of the roller pins is less than 0.1.

The utility model also provides a use method of this device, concrete working process as follows: preparing a servo press machine 1, wherein a main shaft 4 of the servo press machine 1 can rotate and move up and down, a rolling cutter 2 is arranged on the main shaft 4 of the servo press machine 1, and the lower end of the rolling cutter 2 is at least provided with four annular roller pins 6 with uniform intervals; a rolling disc 3 matched with the servo press machine 1 is prepared, the rolling disc 3 is arranged on a bottom rotating mechanism 10 and can rotate correspondingly, and a station groove 7 is formed in the rolling disc 3 and corresponds to the position of a rolling cutter 2 on a main shaft 4 on the servo press machine 1 above.

An oil pump driving chain wheel 8 is arranged in each station groove 7, the rolling cutter 2 is controlled to move downwards by the servo press machine 1 above, so that the roller pins 6 on the rolling cutter 2 are tightly pressed on the surface of the oil pump driving chain wheel 8, the servo press machine 1 controls the rolling cutter 2 to rotate, and the surface of the oil pump driving chain wheel 8 is rolled; adjusting the pressure and the movement stroke of the servo press 1, and rolling until the surface support rate of the oil pump driving chain wheel 8 is met; and then the servo press 1 adjusts the roller pins 6 to move upwards, and the positions of the rolling discs 3 and the upper rolling cutter 2 are adjusted by rotating the bottom rotating mechanism 10, so that rolling is repeatedly performed.

The utility model realizes the improvement of the surface support rate of the oil pump driving chain wheel by rolling; the vertical movement and the rotation of a rolling cutter with the lower end detachably mounted are realized by arranging a servo press capable of rotating and moving up and down, a station groove is arranged on a rolling disc below the servo press and used for placing an oil pump driving chain wheel, and the position is adjusted to continue rolling after the rolling of one station can be completed; in the concrete implementation, the rolling needle on the rolling cutter is tightly pressed on the surface of the oil pump driving chain wheel.

In fig. 3, the surface of the oil pump driving sprocket in the gearbox is flat, the two end faces of the oil pump driving sprocket are flat, the inner diameter of the oil pump driving sprocket is of a double-D-shaped special-shaped structure, and the oil pump driving sprocket rolls back and forth on the end face of the sprocket through a roller pin, as shown in fig. 4 and fig. 5, under the condition that the detection length is not changed, the peak line moves downwards, the support length (l 1+ l2+ l3+ l4+ \ 8230; 8230Ix) after the c section is translated is greatly lengthened, and finally Rmr (c) is enlarged; therefore the utility model discloses can show the peak value that reduces the powder granule, improve the support rate of terminal surface to reduce friction in the use.

And the part after this sprocket installation compresses tightly through inside diameter dysmorphism cooperation axle after the installation, because the part plays transmission and bearing effect, and the terminal surface support rate is big, can make the area of contact increase between the cooperation face, has reduced the friction loss, has prolonged the life-span of part.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the invention and the appended claims, and all equivalent changes and modifications made according to the claims should be included in the scope of the present invention.

Claims

1. The utility model provides a rolling press device for improving oil pump driving sprocket surface support rate which characterized in that: comprises a servo press (1), a rolling cutter (2) and a rolling disc (3); the servo press machine (1) can set pressure and detect the pressure, and a main shaft (4) of the servo press machine (1) can correspondingly rotate and move up and down; the upper end of the rolling cutter (2) is detachably mounted with a main shaft (4) of the servo press (1) through a clamping part (5), and the lower end of the rolling cutter (2) is correspondingly provided with a roller pin (6); the rolling needles (6) are uniformly arranged in an annular interval manner and can roll and rotate on the rolling cutter (2); and a station groove (7) corresponding to the rolling cutter (2) is formed in the rolling disc (3), the oil pump driving chain wheel (8) can be correspondingly fixed in the station groove (7), and the surface of the oil pump driving chain wheel (8) is rolled through the roller pin (6) on the rolling cutter (2) corresponding to the upper part.

2. The rolling apparatus for improving the surface support ratio of an oil pump driving sprocket according to claim 1, wherein: the middle part of the rolling cutter (2) is also provided with a rolling handle (9).

3. The rolling apparatus for improving the surface support ratio of an oil pump driving sprocket according to claim 1, wherein: a clamping part (5) of the upper end surface of the rolling cutter (2) is arranged to be of a stepped groove structure; and the end part of the main shaft (4) of the servo press (1) is also designed into a stepped shaft shape.

4. The rolling apparatus for improving the surface support ratio of an oil pump driving sprocket according to claim 1, wherein: the rolling device is characterized by also comprising a bottom rotating mechanism (10), wherein the rolling discs (3) are correspondingly arranged on the bottom rotating mechanism (10) and can correspondingly drive the rolling discs (3) to rotate; a plurality of station grooves (7) are correspondingly arranged on the rolling disc (3), the station grooves (7) are uniformly arranged at annular intervals, and the positions of the station grooves correspond to the positions of the rolling cutters (2) above the station grooves.

5. The rolling apparatus for improving the surface support ratio of the oil pump driving sprocket according to claim 4, wherein: the rolling tool (2) is provided with at least four rolling needles (6) at intervals; and at least six station grooves (7) on the rolling disc (3) are uniformly arranged at intervals.

6. The rolling apparatus for improving the surface support ratio of an oil pump driving sprocket according to claim 1, wherein: the roller pins (6) are made of hard alloy, and the surface roughness of the roller pins is less than 0.1.