CN219094436U

CN219094436U - Car differential mechanism casing boring grab

Info

Publication number: CN219094436U
Application number: CN202223498417.4U
Authority: CN
Inventors: 刘玉江
Original assignee: Linzhou Frey Transmission Technology Co ltd
Current assignee: Linzhou Frey Transmission Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-30
Anticipated expiration: 2032-12-26

Abstract

The utility model belongs to the technical field of automobile part machining, and particularly relates to a drilling clamp for a differential car shell, which comprises a platform and a shell placing plate connected with the upper end of the platform, wherein a plurality of grooves are formed in the upper top surface of the shell placing plate; the vertical rod is arranged concentrically with the shell placing disc, penetrates through the shell placing disc and the platform and is connected with the output end of the telescopic part; the compressing part is arranged above the shell placing plate and is connected to the top of the vertical rod; the positioning assembly is arranged on the outer side of the shell placing plate, so that the problems that when the differential shell is placed in an existing drilling clamp and taken out, the existing drilling clamp is inconvenient, the nut needs to be twisted for a lot of time each time, the nut is separated from a screw rod or a telescopic rod, the differential shell can be taken out smoothly and can be placed in the drilling clamp, the use is very troublesome, and the drilling efficiency of the differential shell is affected in mass production are solved.

Description

Car differential mechanism casing boring grab

Technical Field

The utility model belongs to the technical field of automobile part machining, and particularly relates to a drilling clamp for a differential shell of a car.

Background

An automotive differential refers to a mechanism that enables left and right (or front and rear) drive wheels to rotate at different rotational speeds. Mainly comprises a left half shaft gear, a right half shaft gear, two planetary gears and a gear rack. The function is to make the left and right wheels roll at different speeds when the automobile turns or runs on uneven road, i.e. to ensure the pure rolling motion of the driving wheels at both sides. The differential is provided for adjusting the rotational speed difference between the left and right wheels. In four-wheel drive, all wheels must be connected in order to drive the four wheels, if the four wheels are mechanically connected together, the vehicle cannot rotate at the same speed during curved running, and in order to enable the rotational speeds of the vehicle during curved running to be substantially uniform, an intermediate differential is required to adjust the rotational speed difference between the front and rear wheels.

The common automobile differential mechanism needs to uniformly process eight holes in the circumferential direction on the differential case, and the processing precision of the holes is high.

The application number is CN 201520378767.8's chinese patent discloses a special drilling machine anchor clamps of automobile differential casing drilling, and it includes the anchor clamps body, transmission case, rotation type drilling template and support, the anchor clamps body top is provided with the handle nut, handle nut top is provided with the graduated disk, the graduated disk is connected with the transmission case, the transmission case top is provided with the support nail, the inside pivot that is provided with of transmission case, the pivot is connected with rotation type drilling template, be provided with the drilling on the rotation type drilling template, the drilling top is provided with quick change drill bushing, quick change drill bushing is connected with the support, leg joint has the screw rod.

However, although most of the drilling jigs in the prior art adopt the same positioning and clamping principle of two pins on one side, the differential case is clamped firmly, but the differential case is inconvenient to put into the drilling jigs and take out, for example, the upper part of the differential case is pressed down to limit, and a large amount of time is required to be spent each time to twist the nut, so that the nut is separated from the screw or the telescopic rod, and then the differential case can be taken out and put in smoothly, which is very troublesome to use, and affects the drilling processing efficiency of the differential case in mass production.

Disclosure of Invention

In order to solve the technical problems, the utility model adopts the following technical scheme:

the drilling fixture for the car differential shell comprises a platform and a shell placing disc connected with the upper end of the platform, wherein a plurality of grooves are formed in the upper top surface of the shell placing disc; the vertical rod is arranged concentrically with the shell placing disc, penetrates through the shell placing disc and the platform and is connected with the output end of the telescopic part; the compressing part is arranged above the shell placing plate and is connected to the top of the vertical rod;

the positioning assembly is arranged on the outer side of the shell placing disc and comprises a positioning chuck and a driving part connected with the upper end of the platform, and the positioning chuck is connected with the output end of the driving part;

after the positioning chuck is acted on by the drive member, the positioning chuck is positioned closer to or farther from the housing to place the disk.

Further, the pressing part comprises a boss connected to the top of the vertical rod and an abutting piece sleeved on the periphery of the vertical rod.

Further, a notch is formed in the abutting piece.

Further, an annular clamping groove is formed in the periphery of the vertical rod, the annular clamping groove is matched with the notch, and the abutting piece is limited between the annular clamping groove and the boss.

Further, the telescopic member includes a cylinder.

Further, the driving part comprises a base connected with the platform, a handle connected with the base and a connecting piece hinged with the handle, and the positioning clamping head is connected with the connecting piece through a sliding rod.

Further, the periphery of the sliding rod is sleeved with a bearing seat.

Compared with the prior art, the utility model has the following beneficial effects:

for convenience differential mechanism casing is put into or is taken out, be in the extension state at the telescopic part, only need take out the butt spare from annular draw-in groove can, because annular draw-in groove cooperatees with the breach, this butt spare can be spacing at the vertical pole periphery of boss lower extreme, in the telescopic part is in shrink process, this butt spare produces down pressure to the differential mechanism casing that is in between butt spare and the casing placing plate, this butt spare also can restrict the degree of freedom of the vertical direction of differential mechanism casing simultaneously, the detachable connection form of this butt spare and vertical pole, the drilling processing of convenient change differential mechanism casing has saved the operation of twist nut, machining efficiency has been promoted.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a boring grab for a differential housing of a passenger car according to the present utility model;

FIG. 2 is a schematic top view of a differential case and a hold-down section in an embodiment of a car differential case boring grab according to the present utility model;

FIG. 3 is a schematic structural view of a vertical rod and boss in an embodiment of a drilling fixture for a differential housing of a car;

FIG. 4 is a schematic view of the structure of the abutment in an embodiment of the car differential housing boring grab of the present utility model;

reference numerals in the drawings of the specification include:

platform 1, housing tray 2, groove 20, telescoping member 3, vertical rod 30, annular clamping groove 300, boss 40, abutment 41, notch 410, positioning chuck 5, drive member 6, base 60, handle 61, connector 62, sliding rod 63, bearing housing 64, differential housing 7.

Detailed Description

In order that those skilled in the art will better understand the present utility model, the following technical scheme of the present utility model will be further described with reference to the accompanying drawings and examples.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted, and that like or similar reference numerals in the drawings correspond to like or similar components in the embodiments of the present utility model; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

Examples:

as shown in fig. 1-4, the drilling fixture for the differential car shell comprises a platform 1 and a shell placing plate 2 connected with the upper end of the platform 1, wherein a plurality of grooves 20 are formed in the upper top surface of the shell placing plate 2; the telescopic component 3 is connected with the lower end of the platform 1, the vertical rod 30 is arranged concentrically with the shell placing disc 2, penetrates through the shell placing disc 2 and the platform 1 and is connected with the output end of the telescopic component 3; the compressing part is arranged above the shell placing plate 2 and connected to the top of the vertical rod 30, the telescopic part 3 comprises an air cylinder, and the grooves 20 are uniformly distributed in circumference;

the differential shell 7 is placed into the drilling fixture along the direction of the vertical rod 30, the telescopic part 3 is used for driving the vertical rod 30 and the compacting part to tightly attach the differential shell 7 and the lower end face of the shell placing plate 2;

the positioning assembly is arranged on the outer side of the shell placing disc 2 and comprises a positioning chuck 5 and a driving part 6 connected with the upper end of the platform 1, and the positioning chuck 5 is connected with the output end of the driving part 6, wherein after the positioning chuck 5 is acted by the driving part 6, the positioning chuck 5 is close to the shell placing disc 2, and the positioning chuck 5 stretches into a hole on the side part of the differential shell 7 (the structural characteristic of the differential shell 7, the side part is inevitably provided with a hole) to clamp the differential shell 7;

when the differential housing 7 is drilled, the drill bit on the upper part of the clamp extends to the large end face of the bottom of the differential housing 7, after the drill bit penetrates, the head of the drill bit extends into the groove 20 in the housing placement plate 2, and after the positioning chuck 5 is acted on by the driving part 6, the positioning chuck 5 is close to or far away from the housing placement plate 2.

The compressing part comprises a boss 40 connected to the top of the vertical rod 30 and a abutting piece 41 sleeved on the periphery of the vertical rod 30, wherein a notch 410 is formed in the abutting piece 41, an annular clamping groove 300 is formed in the periphery of the vertical rod 30, the annular clamping groove 300 is matched with the notch 410, and the abutting piece 41 is limited between the annular clamping groove 300 and the boss 40.

Wherein, in order to facilitate the putting in or taking out of the differential case 7, the abutting piece 41 is only required to be transversely taken out from the annular clamping groove 300 when the telescopic part is in an extension state;

the annular clamping groove 300 of the abutting piece 41 is provided with a height larger than the plane of the highest point of the differential case 7 after being placed, the abutting piece 41 is in a circular ring shape as a whole, the outer diameter of the abutting piece 41 is larger than the outer diameters of the opening at the top of the differential case 7 and the boss 40, and the inner diameter of the abutting piece 41 is smaller than the outer diameters of the two.

Because the annular clamping groove 300 is matched with the notch 410, the abutting piece 41 can be limited on the periphery of the vertical rod 30 at the lower end of the boss 40, and in the contraction process of the telescopic part, the abutting piece 41 generates downward pressure on the differential case 7 between the abutting piece 41 and the case placement plate 2, meanwhile, the abutting piece 41 can limit the freedom degree of the differential case 7 in the vertical direction, and the detachable connection form of the abutting piece 41 and the vertical rod 30 is convenient for replacing the drilling processing of the differential case 7, so that the operation of twisting nuts is omitted, and the processing efficiency is improved;

specifically, the driving part 6 includes a base 60 connected with the platform 1, a handle 61 connected with the base 60, and a connecting piece 62 hinged with the handle 61, the positioning chuck 5 is connected with the connecting piece 62 through a sliding rod 63, a bearing seat 64 is sleeved on the periphery of the sliding rod 63, the handle 61 is arc-shaped, an operator pulls the handle 61 upwards, the sliding rod 63 can drive the positioning chuck 5 to move towards the differential mechanism housing 7, and when the handle 61 is pressed down, the positioning chuck 5 is retracted.

Of course, the platform 1 can be provided with a plurality of groups of drilling clamps, and holes are drilled at the same time, so that the machining efficiency of the batch differential cases 7 is further improved.

The foregoing is merely exemplary of the present utility model, and the specific structures and features well known in the art are not described in any way herein, so that those skilled in the art will be able to ascertain all prior art in the field, and will not be able to ascertain any prior art to which this utility model pertains, without the general knowledge of the skilled person in the field, before the application date or the priority date, to practice the present utility model, with the ability of these skilled persons to perfect and practice this utility model, with the help of the teachings of this application, with some typical known structures or methods not being the obstacle to the practice of this application by those skilled in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims

1. Car differential mechanism casing boring grab, its characterized in that includes:

a platform;

the shell placing plate is connected with the upper end of the platform;

a plurality of grooves are formed in the upper top surface of the shell placing plate;

the telescopic component is connected to the lower end of the platform;

the vertical rod is concentrically arranged with the shell placing disc, penetrates through the shell placing disc and the platform and is connected with the output end of the telescopic component;

the compressing part is arranged above the shell placing plate and is connected to the top of the vertical rod; the positioning assembly is arranged on the outer side of the shell placing disc and comprises a positioning chuck and a driving part connected with the upper end of the platform, and the positioning chuck is connected with the output end of the driving part; wherein the positioning chuck is moved toward or away from the housing-placing plate after the positioning chuck is acted upon by the driving member.

2. The car differential housing boring grab of claim 1, wherein: the pressing part comprises a boss connected to the top of the vertical rod and a butt piece sleeved on the periphery of the vertical rod.

3. The car differential housing boring grab of claim 2, wherein: and a notch is formed in the abutting piece.

4. The car differential housing boring grab of claim 3, wherein: the periphery of the vertical rod is provided with an annular clamping groove, the annular clamping groove is matched with the notch, and the abutting piece is limited between the annular clamping groove and the boss.

5. The car differential housing boring grab of claim 1, wherein: the telescopic member includes a cylinder.

6. The car differential housing boring grab of claim 1, wherein: the driving part comprises a base connected with the platform, a handle connected with the base and a connecting piece hinged with the handle, and the positioning clamping head is connected with the connecting piece through a sliding rod.

7. The car differential housing boring grab of claim 6, wherein: the periphery of the sliding rod is sleeved with a bearing seat.