CN201979266U

CN201979266U - Pressing tool for camshaft front oil seal

Info

Publication number: CN201979266U
Application number: CN201120080753XU
Authority: CN
Inventors: 梁翠; 刘海利
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2011-03-24
Filing date: 2011-03-24
Publication date: 2011-09-21
Anticipated expiration: 2021-03-24

Abstract

The utility model relates to a tool for pressing sealing components, in particular to a pressing tool for a camshaft front oil seal, which comprises a hollow shell (1), and a screwing drive part which is arranged in the hollow inner part of the shell (1) and is connected with an internal screwed hole of an camshaft (2) and the shell (1) in a matching way, wherein the hollow shell (1) and the screwing drive part have the same center line, and when the screwing drive part is screwed with the internal screwed hole of the camshaft (2), thrust along the screwing direction is exerted on the shell (1). The technical scheme is adopted, the front oil seal is ensured to be installed reliably, the skill requirements on working personnel are lower, and the structure is simple.

Description

Camshaft Front oil seal press mounting tool

Technical field

The utility model relates to a kind of instrument that potted component is press-fited, and relates in particular to a kind of camshaft Front oil seal press mounting tool.

Background technology

Camshaft seal is a kind ofly to be used for preventing that fluid from leaking and to prevent that dust from entering intrasystem rotary shaft oil seal from system, if oil sealing breach, breach, inclination or flange etc., oil sealing promptly leakage of oil can take place.Be subject matter insured matter, the assembling oil sealing needs by specific purpose tool.The method of assembling camshaft Front oil seal commonly used at present mostly is following several: the one, and envelope is assembling directly, not by specific purpose tool, meets the demands with manual skill; The 2nd, make the simple pressing instrument, manual press-loading puts in place, utilizes the manual skill control rate; The 3rd, use press-fitting tool earlier oil sealing to be press fit on the housing by pressing machine, again housing unit is assembled on the engine together.All can reach the purpose that press-fits the camshaft Front oil seal by above-mentioned several modes.But the employing such scheme is installed reliably if guarantee the camshaft Front oil seal, and first kind of mode had relatively high expectations to manual skill, substitutes if personnel occur, and quality is difficult to guarantee; The second way can not effectively be controlled press-fiting speed, if excessive velocities makes the distortion of oil sealing external diameter, quality is bad.The third mode is a usual way, but the assembly yard can not arbitrarily change, and is big to the place space requirement.

The utility model content

For solving the deficiencies in the prior art, the utility model provides a kind of camshaft Front oil seal press mounting tool, and is lower to the requirement of staff's technical ability guaranteeing the Front oil seal installation simultaneously reliably, and simple in structure.

For achieving the above object, camshaft Front oil seal press mounting tool of the present utility model, comprise common center line hollow shell, place shell hollow inside screw drive division with camshaft internal thread hole and shell are connected, the described internal thread hole that screws drive division and camshaft screws in the process shell is applied along screwing direction thrust.

Further, the above-mentioned drive division that screws is by screwing the bolt that cooperates, be sleeved on the bolt and with the bonnet that shell is connected and form with the camshaft internal thread hole.

As the improvement of aforesaid way, in the enclosure, be set with the camshaft taper surface on the bolt body away from an end of nuts and gnaw the locating piece that closes mutually, described locating piece and shell matched in clearance.

Further improvement as to aforesaid way is set with spring on the bolt body between locating piece and the bonnet.

Further improvement as to aforesaid way is provided with keyway on locating piece, shell is provided with and gos deep into the jackscrew that keyway is interior, the edge direction parallel with the bolt center line slided in keyway.

In addition, specifically, above-mentioned bonnet and shell are by being threaded.

Adopt technique scheme, its effect is as follows:

1, this press mounting tool adopts the internal thread hole that screws drive division and camshaft to screw in the process shell to be applied the edge and screws direction thrust, make shell can treat the Front oil seal that press-fits and apply thrust, and owing to adopt bolt to screw the location, make the thrust equilibrium that is applied on the Front oil seal, it is firm, reliable to have guaranteed that Front oil seal press-fits, and it is simple in structure.

2, be provided with in the enclosure with the camshaft taper surface and gnaw the locating piece that closes mutually, in the process that Front oil seal is installed, when this locating piece and camshaft are complementary, shell is applied a firm support force, prevent the up and down shake of shell in press-fiting process, further improved the stability that press-fits precision and press-fit.

3, on the bolt body between locating piece and the bonnet, be set with spring, make press mounting structure of the present utility model press-fit finish after, locating piece can reset fast, further improves convenience of the present utility model.

4, be provided with keyway on locating piece, shell is provided with the jackscrew that gos deep in the keyway, makes bolt screwing in the process with the camshaft screwed hole, prevents the rotation of locating piece opposite shell; Simultaneously, under the pressure effect of spring, after the tapered end face of locating piece and camshaft being gnawed close fully, because the length restriction of keyway, jackscrew is obtained in keyway along the restriction that screws direction, this restriction and when Front oil seal compressed, shell is along screwing the mobile spacing of direction the best, further guaranteed to press-fit quality.

Description of drawings

Below in conjunction with the drawings and the specific embodiments the utility model is done further to describe in detail:

Fig. 1 is an overall structure schematic diagram of the present utility model;

Fig. 2 is a user mode structural representation of the present utility model.

Among the figure:

1, shell; 2, camshaft; 3, bolt; 4, bonnet; 5, nuts; 6, locating piece; 7, spring; 8, keyway; 9, jackscrew; 10, Front oil seal.

The specific embodiment

By as can be known shown in Figure 1, camshaft Front oil seal press mounting tool of the present utility model comprises hollow shell 1, place shell 1 hollow inside screw drive division with camshaft 2 internal thread holes and shell 1 are connected, shell 1 has identical with the Front oil seal diameter or respective outer diameter, and the described internal thread hole that screws drive division and camshaft 2 screws in the process shell 1 is applied along screwing direction thrust.

Specifically, screw drive division by screwing the bolt 3 that cooperates, be sleeved on the bolt 3 and and form with the bonnet 4 that shell 1 is connected with camshaft 2 internal thread holes, bonnet 4 and shell 1 leave the gap by being threaded between bolt 3 and the bonnet 4, can make bonnet 4 and bolt 3 relative motions or rotation.

Be set with locating piece 6 on bolt 3 bodies in shell 1, away from an end of nuts 5, locating piece 6 has the gabarit shape with the corresponding indent of camshaft 2 taper surfaces, in concrete duty, locating piece 6 can be gnawed mutually with camshaft 2 and close, locating piece 6 and shell 1 matched in clearance can make relative slip between locating piece 6 and the shell 1.

Be set with spring 7 on bolt 3 bodies between locating piece 6 and the bonnet 4, spring 7 one end overheads are right-hand at locating piece 6, and other end overhead is on the left side of bonnet 4.

On locating piece 6, be provided with keyway 8, the length direction of this keyway 8 is parallel with the center line of bolt 3, shell 1 is provided with the jackscrew 9 that gos deep in the keyway 8, keyway 8 has with jackscrew 9 and gos deep into part corresponding width in the keyway, so that jackscrew 9 can slide in keyway 8 along the direction parallel with bolt 3 center lines.Shell 1, bolt 3, bonnet 4, locating piece 6 center line design altogether.

By as can be known shown in Figure 2, in use, Front oil seal 10 is sleeved on the camshaft 2, the internal thread hole with bolt 3 screwed ends and camshaft 2 aligns then, pneumatic trigger is linked to each other with nuts 5, by starting 3 rotations of trigger actuated bolt.In bolt 3 rotary courses, owing to have the gap between bonnet 4 and the bolt 3, bonnet 4 does not rotate together with shell 1 integral body, and when bolt 3 screws in camshafts 2 to a certain degree the time, nuts 5 promotes bonnets 4 and drives shells 1 and screw direction along bolt and move, at this moment, bonnet 4 is by spring 7, and locating piece 6 is progressively fitted with the camshaft 2 that has taper surface under the pressure effect of spring 7, after locating piece 6 and camshaft 2 are fitted fully, locating piece 6 stop motions; At this moment, bolt 3 continues to screw, and bonnet 4 continues to left movement with shell 1, spring 7 continues to be compressed, and jackscrew 9 slides in keyway 8, in this process, apply thrust by 1 pair of Front oil seal 10 of shell, when jackscrew 9 contacts with the right-hand member of keyway 8, Front oil seal 10 compressed put in place.In this process, bolt 3 contacts with bonnet 4 and promotes bonnet 4 and is communicated with shell 1 when left movement, though bolt 3 imposes on bonnet 4 together with shell 1 revolving force by the frictional force with bonnet 4, but because the effect of keyway 8 and jackscrew 9, define the rotation of shell 1, make that to press-fit Front oil seal 10 more stable, it is more accurate to press-fit the location.

Claims

1. camshaft Front oil seal press mounting tool, it is characterized in that: this press mounting tool comprise common center line hollow shell (1), place shell (1) hollow inside screw drive division with camshaft (2) internal thread hole and shell (1) are connected, the described internal thread hole that screws drive division and camshaft (2) screws in the process shell (1) is applied along screwing direction thrust.

2. camshaft Front oil seal press mounting tool according to claim 1 is characterized in that: the described drive division that screws is by screwing the bolt (3) that cooperates with camshaft (2) internal thread hole, being sleeved on bolt (3) and going up and form with the bonnet (4) that shell (1) is connected.

3. camshaft Front oil seal press mounting tool according to claim 2, it is characterized in that: be set with camshaft (2) taper surface on bolt (3) body in shell (1), away from an end of nuts (5) and gnaw the locating piece (6) that closes mutually, described locating piece (6) and shell (1) matched in clearance.

4. camshaft Front oil seal press mounting tool according to claim 3 is characterized in that: be set with spring (7) on bolt (3) body between locating piece (6) and the bonnet (4).

5. according to claim 3 or 4 described camshaft Front oil seal press mounting tools, it is characterized in that: be provided with keyway (8) on locating piece (6), shell (1) is provided with and gos deep into the jackscrew (9) that keyway (8) is interior, the edge direction parallel with bolt (3) center line slided in keyway (8).

6. camshaft Front oil seal press mounting tool according to claim 2 is characterized in that: described bonnet (4) and shell (1) are by being threaded.