CN202985432U

CN202985432U - Device for press mounting bearing

Info

Publication number: CN202985432U
Application number: CN 201220678866
Authority: CN
Inventors: 蒋文丽; 程应维
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2012-12-11
Filing date: 2012-12-11
Publication date: 2013-06-12
Anticipated expiration: 2022-12-11

Abstract

The utility model discloses a device for press mounting a bearing. The device is characterized in that a support seat (2) is fixed on a base (1), an annular boss (2a) is integrally formed on the support seat (2), the center of the annular boss (2a) integrally extends upward to from a positioning shaft (2b), and a ring groove (2c) is formed in the top surface of the annular boss (2a) and surrounds the positioning shaft (2b); a pressure head (3) is arranged above the support seat (2), a guide groove (3b) matched with the positioning shaft (2b) is formed at the lower end of the pressure head (3), and a circle of platens (3a) are arranged at the edge of the bottom surface of the pressure head (3). The device has the advantages of unique design, simple structure and convenience in operation, and can effectively and reliably position the bearing of a crankcase, so as to ensure uniform stress to the bearing when press mounting, avoid deformation or damage of the bearing, and ensure the service performance and service life of the bearing.

Description

The device of pressing bearing

Technical field

The utility model belongs to technical field of tooling clamps, specifically, and particularly for the positioner of press-fitting crank case bearing.

Background technology

At present, the mode of engine production producer press-fitting crank case bearing is generally: first crankcase is placed on work top, the mould assembling of crankcase is faced up, then bearing is packed in crankcase, make bearing be placed on the place, aperture of crankshaft hole, then live bearing with an axial compression, knock the upper end of axle with instrument, bearing press mounting is entered in crankshaft hole.The existing deficiency of aforesaid way is:

1) in the process that press-fits, bearing is mainly stressed by inner ring, bearing deformation easily occurs even fall apart, and does not ensure the service life of bearing;

2) adopt the mode of manually knocking to press-fit, shaft strength is uneven, easily causes bearing out-of-flatness or skew, is difficult to ensure the concentricity of bearing and crankshaft hole, and what press-fit is second-rate;

3) press-fit entirely at every turn and carry out with operator's experience and qualification, random large, can not guarantee uniform production.

4) bearing what press-fit employing is full manual operations, operator's labour intensity is large, and production efficiency is low.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of device that can guarantee the uniform pressing bearing of shaft strength.

The technical solution of the utility model is as follows: a kind of device of pressing bearing, be fixed with supporting seat (2) on base plate (1), be formed with annular boss (2a) on this supporting seat (2), on the mediad of described annular boss (2a), one is extended, form locating shaft (2b), end face at described annular boss (2a) has annular groove (2c), and this annular groove (2c) is looped around the periphery of locating shaft (2b); Be provided with pressure head (3) in the top of described supporting seat (2), the lower end of this pressure head (3) has the gathering sill (3b) suitable with locating shaft (2b), and is provided with a circle present a theatrical performance as the last item on a programme (3a) at the edge of pressure head (3) bottom surface.

the utility model is placed on hydraulic press and uses, when being used for press-fitting crank case bearing, first crankcase is placed on supporting seat, the mould assembling of crankcase is faced up, and crankcase is supported by the annular boss on supporting seat, the centring ring that carries on the crankcase outer wall embeds in the annular groove of annular boss end face, play the location, prevent that crankcase is subjected to displacement with respect to supporting seat, locating shaft on supporting seat passes crankshaft hole and stretches in crankcase, then bearing is put into crankcase, this bearing holder (housing, cover) is loaded on locating shaft, and bearing is positioned at the place, aperture of crankshaft hole, then pressure head is contained on locating shaft, make the gathering sill of pressure head lower end be inserted in locating shaft, and the end contact with bearing outer ring of presenting a theatrical performance as the last item on a programme of pressure head bottom surface, the staking punch of last operation hydraulic press is descending, make staking punch compressing pressure head, and by pressure head, bearing press mounting is entered in crankshaft hole.

Due in the process that press-fits, the outer ring of bearing is stressed, can prevent from effectively that bearing from deforming even to fall apart, and the service life of bearing is secure; Locating shaft matches with gathering sill on pressure head, plays guiding, to guarantee vertically down motion of pressure head, when press-fiting like this, shaft strength is even, out-of-flatness or skew can not occur, it is consistent that bearing and the concentricity of crankshaft hole can guarantee, thereby greatly improved the quality that press-fits; The utility model press-fits by hydraulic press, and is not only simple, convenient, and operator's labour intensity is little, and production efficiency is high, can satisfy the requirement that homogeneity of product is produced.

What described supporting seat (2) was arranged in annular boss (2a) below is partially submerged into base plate (1), and both are tightly fixed, and the end face of the bottom surface of annular boss (2a) and base plate (1) fits.Above scheme is assembled simply on the one hand, can make be connected between supporting seat and base plate firm; On the other hand, simple in structure, compact, be conducive to processing and reduce production costs.

For simplified structure, strengthen stability, described base plate (1) is the rectangular flat structure, supporting seat (2) is installed on the middle part of base plate (1).

In order to facilitate processing and fabricating, reduce production costs, the profile of described pressure head (3) is up-small and down-big syllogic cylinder.

Beneficial effect: ingenious, simple in structure, the simple operation of the utility model design, can carry out effectively crankcase bearing, locate reliably, shaft strength is even when guaranteeing to press-fit, and has avoided bearing to deform or has damaged, thereby having guaranteed serviceability and the service life of bearing.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the top view of base plate and supporting seat.

Fig. 3 is the structural representation of pressure head.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As Fig. 1, Fig. 2, shown in Figure 3, the utility model is comprised of base plate 1, supporting seat 2 and pressure head 3, and wherein, base plate 1 is the rectangular flat structure, at the middle part of base plate 1, supporting seat 2 is installed.Be formed with annular boss 2a on described supporting seat 2, what supporting seat 2 was arranged in annular boss 2a below is partially submerged into base plate 1, and both are tightly fixed, and the end face of the bottom surface of annular boss 2a and base plate 1 fits.The central authorities of described annular boss 2a one straight up extend, form locating shaft 2b, the end face of annular boss 2a and locating shaft 2b are perpendicular, and have annular groove 2c at the end face of annular boss 2a, this annular groove 2c is looped around the periphery of locating shaft 2b, and the center of annular groove 2c is on the axial line of locating shaft 2b.

As Fig. 1, Fig. 2, shown in Figure 3, be provided with pressure head 3 above supporting seat 2, the profile of this pressure head 3 is up-small and down-big syllogic cylinder, the axial line of the axial line of pressure head 3 and locating shaft 2b is point-blank.Be formed with the circle 3a that presents a theatrical performance as the last item on a programme at the edge of described pressure head 3 bottom surfaces, the inside of this 3a that presents a theatrical performance as the last item on a programme forms deep gouge, and the bottom land of this deep gouge upwards offers gathering sill 3b, and described gathering sill 3b extends upward, and the shape size of gathering sill 3b and locating shaft 2b adapt.

Operation principle of the present utility model is as follows:

1) the utility model is placed on the work top of hydraulic press (not shown in FIG.), and the check and correction frock, guarantees that the hydraulic press alignment of shafts is consistent with the tool locating center;

2) take off pressure head 3, crankcase 4 is placed on supporting seat 2, the mould assembling of crankcase 4 is faced up, and crankcase 4 is supported by the annular boss 2a on supporting seat 2, the centring ring that carries on crankcase 4 outer walls embeds in the annular groove 2c of annular boss 2a end face, play the location, the locating shaft 2b on supporting seat 2 passes crankshaft hole 6 and stretches in crankcase 4;

3) bearing 5 is put into crankcase 4, this bearing 5 is set on locating shaft 2b, and bearing 5 is positioned at the aperture place of crankshaft hole 6, then pressure head 3 is contained on locating shaft 2b, make the gathering sill 3b of pressure head 3 lower ends be inserted in locating shaft 2b, and the end contact of present a theatrical performance as the last item on a programme 3a and bearing 5 outer rings of pressure head 4 bottom surfaces;

4) staking punch of process oil press is descending, makes staking punch compressing pressure head 3, and by pressure head 3, bearing 5 is pressed fit in crankshaft hole 6.

Claims

1. the device of a pressing bearing, it is characterized in that: be fixed with supporting seat (2) on base plate (1), be formed with annular boss (2a) on this supporting seat (2), on the mediad of described annular boss (2a), one is extended, form locating shaft (2b), end face at described annular boss (2a) has annular groove (2c), and this annular groove (2c) is looped around the periphery of locating shaft (2b); Be provided with pressure head (3) in the top of described supporting seat (2), the lower end of this pressure head (3) has the gathering sill (3b) suitable with locating shaft (2b), and is provided with a circle present a theatrical performance as the last item on a programme (3a) at the edge of pressure head (3) bottom surface.

2. the device of pressing bearing according to claim 1, it is characterized in that: what described supporting seat (2) was arranged in annular boss (2a) below is partially submerged into base plate (1), both are tightly fixed, and the end face of the bottom surface of annular boss (2a) and base plate (1) fits.

3. the device of pressing bearing according to claim 1 and 2 is characterized in that: described base plate (1) is the rectangular flat structure, and supporting seat (2) is installed on the middle part of base plate (1).

4. the device of pressing bearing according to claim 1, it is characterized in that: the profile of described pressure head (3) is up-small and down-big syllogic cylinder.