CN202200003U

CN202200003U - One-step press mounting die for crankshaft timing gear and bearings

Info

Publication number: CN202200003U
Application number: CN2011202702710U
Authority: CN
Inventors: 蒋瑞元; 刘星庆; 常建栋; 王安庆
Original assignee: Chongqing Meixin Mile Shafts Co Ltd
Current assignee: Chongqing Meixin YiShen Machinery Manufacturing Co., Ltd.
Priority date: 2011-07-28
Filing date: 2011-07-28
Publication date: 2012-04-25
Anticipated expiration: 2021-07-28

Abstract

The utility model relates to a press mounting die for press mounting of a timing gear and bearings on a crankshaft of a gasoline engine, which comprises a pressing tooth sleeve, a pressing barrel, a bottom plate, a sliding seat, sliding rails, a limiting upright plate, a limiting plate, a combined gasket and a sliding seat limiting device. By the aid of the one-step press mounting die for the crankshaft timing gear and the bearings, the timing gear and the two bearings can be in press mounting on the crankshaft at one step, simultaneously, the periphery positions of the timing gear and the crankshaft can be guaranteed reliably, the die is simple in structure and convenient in press mounting operation, and press mounting efficiency is improved.

Description

Press mounting die of crankshaft timing gear and bearing

Technical field

The utility model relates to a kind of with timing gears and the press mounting die of bearing press mounting on gasoline engine crank.

Background technology

Timing gears and two bearings are installed on the motorcycle engine crankshaft, a bearing wherein is installed on the bent axle right axle shaft, a bearing and timing gears are installed on the bent axle left half axle.At present, timing gears and two bearing press mountings are accomplished by two operations on bent axle, operating procedure is: make the bent axle right axle shaft earlier up; Be pressed into a bearing with the bearing pressure cylinder, make the bent axle left half axle then up, be pressed into the another bearing with the bearing pressure cylinder; Use tooth pressure tube in correct time at last, to being pressed into timing gears behind the tooth angle degree good correct time, the per pass operation is divided into two work steps again; Operation is trouble, and press-fits the workpiece that need overturn in the process, and labour intensity is bigger.

Summary of the invention

The purpose of the utility model provides a kind of crankshaft timing gear and press mounting die of bearing, can timing gears and two bearings once be fitted on the bent axle.

Press mounting die of said crankshaft timing gear of the utility model and bearing comprises and presses tooth cover and pressure cylinder that pressure cylinder is fixed on the upper surface of pressing the tooth cover; Also comprise base plate, slide, slide rail, spacing riser, limiting plate, bonded washer and slide stopping means, slide rail is fixed on the base plate, and slide is supported on the slide rail; Can only slide by the mould fore-and-aft direction in the slide rail upper edge; Offer the bent axle via hole on the slide, the slide stopping means is positioned at sliding rail rear end, to limit the distance that slide slides backward along slide rail.

Press the excircle of tooth cover to be provided with step, pressing the centre bore of tooth cover is the stepped hole with counterbore, and this counterbore can press-fit the timing gears matched in clearance with plan, and the counterbore degree of depth press-fits the thickness of timing gears greater than plan.

Bonded washer is made up of arc length and two identical circular arc bodies of radius; The external diameter of bonded washer is less than the outer ring internal diameter of intending pressing bearing; Its internal diameter is greater than the inner ring internal diameter of intending pressing bearing; Less than the inner ring external diameter of intending pressing bearing, between its thickness and standard bent axle left half axle upper bearing (metal) and the timing gears apart from consistent.

Limiting plate is supported on the base plate parallel with base plate through two spacing risers; Said slide rail is between two spacing risers; The limiting plate front portion offers breach, when slide when slide rail slides backwards on extreme position, this breach be positioned at slide the bent axle via hole directly over; The surface of breach is formed by arc surface with two tangent planes of these arc surface two ends, and the distance between two planes equals the diameter of arc surface, and the distance on two planes is greater than the diameter of intending pressing bearing, less than the stepped diameters of pressing the tooth cover.

Bent axle via hole place offers the bearing locating slot on the slide, and the degree of depth of bearing locating slot is less than the width of intending pressing bearing.

Said slide stopping means is made up of limited block and caging bolt, and limited block is fixed on sliding rail rear end, and caging bolt is screwed on the limited block, and the bolt front end is towards the sliding base rear end face.

One end of two circular arc bodies in the bonded washer is hinged on the two ends of contiguous block respectively, and wherein the other end end face of a circular arc body is inlaid with magnet, and two circular arc bodies are closed into annulus under the magnet effect.

Slide is at the slide rail front end before press-fiting; Earlier bearing is placed on the bent axle via hole place in the slide locating slot; Again the bent axle right axle shaft is inserted in bearing and the bent axle via hole down; On left half axle, be inserted in bearing and bonded washer, will be placed with at last timing gears and to good correct time the tooth angle degree pressure tooth cover be sleeved on the bent axle left half axle together with pressure cylinder.(this pressure tooth interlocks the timing gears press-loading apparatus that has utilized ZL201020510224.4 with pressure cylinder).Push slide to sliding rail rear end, contact with caging bolt, start press and press down until slide; The transmission that press-fits pressure in the process is: hydraulic press passes to pressure cylinder with pressure; The pressure tooth cover of pressure cylinder lower end is press fit into timing gears on the left half axle, simultaneously, presses the tooth cover that pressure is passed to bonded washer; Bonded washer transfers the pressure on the bearing inner race again, thus with bearing press mounting on left half axle.Press-fit that whole bent axle all can move down along with pressing down of hydraulic press in the process, because the bearing on the right axle shaft can not move by slide is spacing, so the another bearing also is fitted on the right axle shaft.When timing gears, two bearings all were pressed onto, the step end face of pressing tooth to put was just fitted with the limiting plate upper surface, thereby restriction presses tooth cover and pressure cylinder to continue to move down.

The utility model is owing to have this kind structure; Can once be fitted in timing gears and two bearings on the bent axle; And owing to adopted the timing gears press-loading apparatus of ZL201020510224.4, thus also can make the circumferential position between timing gears and the bent axle be able to reliable assurance, this mould structure is simple; Press-fit easy to operately, improved and press-fit efficient.

Description of drawings

Combine accompanying drawing that the utility model is done further explain at present.

Fig. 1 is that the utility model is with timing gears and the front view of bearing press mounting on bent axle;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the cutaway view of A-A line among Fig. 1;

Fig. 4 is the axonometric drawing of the utility model;

Fig. 5 is the axonometric drawing of slide;

Fig. 6 is the axonometric drawing of limiting plate;

Fig. 7 is for pressing the main pseudosection of tooth cover;

Fig. 8 is the front view of bonded washer;

Fig. 9 is the cutaway view of B-B line among Fig. 8;

Figure 10 is the vertical view of Fig. 8.

The specific embodiment

To shown in Figure 4, press mounting die of this crankshaft timing gear and bearing comprises presses tooth cover 9 and pressure cylinder 1 like Fig. 1, and pressure cylinder 1 is fixed on the upper surface of pressing tooth cover 9, and its structure can be with reference to the disclosed apparatus structure of ZL201020510224.4.This press mounting die also comprises base plate 5, slide 7, two slide rails 6, spacing riser 4, limiting plate 2, bonded washer 8 and slide stopping means; Two slide rails 6 along press mounting die fore-and-aft direction secured in parallel on base plate 5; Slide 7 is supported on two slide rails 6 and is slidingly matched with slide rail, and slide 7 can only be slided at slide rail 6 upper edge mould fore-and-aft directions.

As shown in Figure 5, offer bent axle via hole 13 on the slide 7, and offer bearing locating slot 12 at bent axle via hole 13 places, the degree of depth of bearing locating slot 12 is less than the width of intending pressing bearing, and slide 7 front ends are equipped with handle 3, are convenient to push-and-pull slide 7.The slide stopping means is positioned at slide rail 6 rear ends; Be made up of limited block 10 and caging bolt 11, limited block 10 is fixed on slide rail 6 rear ends, and caging bolt 11 is screwed on the limited block 10; And the bolt front end is towards slide 7 rear end faces, to limit the distance that slide 7 slides backward along slide rail 6.

As shown in Figure 7, press the excircle of tooth cover 9 to be provided with step 15, pressing the centre bore of tooth cover 9 is the stepped hole with counterbore 16, this counterbore 16 can press-fit the timing gears matched in clearance with plan, and counterbore 16 degree of depth press-fit the thickness of timing gears greater than plan.

Extremely shown in Figure 10 like Fig. 8; Bonded washer 8 is made up of arc length and two all identical circular arc bodies of radius; One end of two circular arc bodies is hinged on the two ends of contiguous block 17 respectively, and wherein the other end end face of a circular arc body is inlaid with 18, two circular arc bodies of magnet and under magnet 18 effects, is closed into annulus.The external diameter of bonded washer 8 is less than the outer ring internal diameter of intending pressing bearing, and its internal diameter is greater than the inner ring internal diameter of intending pressing bearing, less than the inner ring external diameter of intending pressing bearing, between the thickness of bonded washer 8 and standard bent axle left half axle upper bearing (metal) and the timing gears apart from consistent.

Like Fig. 1 to Fig. 4 and shown in Figure 6; Limiting plate 2 is supported on the base plate 5 parallel with base plate 5 through two spacing risers 4; Said slide rail 6 is between two spacing risers 4; Limiting plate 2 front portions offer breach 14, when slide 7 when slide rail 6 slides backwards on extreme position, this breach 14 be positioned at slide 7 bent axle via hole 13 directly over.The surface of breach 14 is formed by arc surface with two tangent planes of these arc surface two ends, and the distance between two planes equals the diameter of arc surface, and the distance on two planes is greater than the diameter of intending pressing bearing, less than the stepped diameters of pressing the tooth cover.

Claims

1. press mounting die of crankshaft timing gear and bearing; Comprise and press tooth cover (9) and pressure cylinder (1), pressure cylinder is fixed on the upper surface of pressing the tooth cover, it is characterized in that: also comprise base plate (5), slide (7), slide rail (6), spacing riser (4), limiting plate (2), bonded washer (8) and slide stopping means; Slide rail is fixed on the base plate; Slide is supported on the slide rail, can only slide by the mould fore-and-aft direction in the slide rail upper edge, offers bent axle via hole (13) on the slide; The slide stopping means is positioned at sliding rail rear end, to limit the distance that slide slides backward along slide rail;

Press the excircle of tooth cover (9) to be provided with step (15), the centre bore of pressing the tooth cover is for having the stepped hole of counterbore (16), and this counterbore can press-fit the timing gears matched in clearance with plan, and the counterbore degree of depth press-fits the thickness of timing gears greater than plan;

Bonded washer (8) is made up of arc length and two identical circular arc bodies of radius; The external diameter of bonded washer is less than the outer ring internal diameter of intending pressing bearing; Its internal diameter is greater than the inner ring internal diameter of intending pressing bearing; Less than the inner ring external diameter of intending pressing bearing, between its thickness and standard bent axle left half axle upper bearing (metal) and the timing gears apart from consistent;

Limiting plate (2) is supported on base plate (5) through two spacing risers (4) and goes up parallel with base plate; Said slide rail (6) is between two spacing risers; The limiting plate front portion offers breach (14); When slide when slide rail slides backwards on extreme position, this breach be positioned at slide bent axle via hole (13) directly over; The surface of breach is formed by arc surface with two tangent planes of these arc surface two ends, and the distance between two planes equals the diameter of arc surface, and the distance on two planes is greater than the diameter of intending pressing bearing, less than step (15) diameter of pressing tooth cover (9).

2. according to the said crankshaft timing gear of claim 1 and press mounting die of bearing, it is characterized in that: slide (7) is gone up bent axle via hole (13) and is located to offer bearing locating slot (12), and the degree of depth of bearing locating slot is less than the width of intending pressing bearing.

3. according to the said crankshaft timing gear of claim 1 and press mounting die of bearing; It is characterized in that: said slide stopping means is made up of limited block (10) and caging bolt (11); Limited block is fixed on sliding rail rear end; Caging bolt is screwed on the limited block, and the bolt front end is towards slide (7) rear end face.

4. according to the said crankshaft timing gear of claim 1 and press mounting die of bearing; It is characterized in that: an end of two circular arc bodies in the bonded washer (8) is hinged on the two ends of contiguous block (17) respectively; Wherein the other end end face of a circular arc body is inlaid with magnet (18), and two circular arc bodies are closed into annulus under the magnet effect.