JPH0647651Y2 - Spacer Expander-Ear processing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ear processing device for a spacer expander in a combined steel oil ring for an internal combustion engine.

2. Description of the Related Art A combination steel oil ring having a spacer expander is known as an oil ring for an internal combustion engine.

As a combined steel oil ring for an internal combustion engine, (1) a lubricating function for forming a proper lubricating oil film thickness between a cylinder wall and a piston ring so that the piston slides smoothly, (2) ) Keep the outer peripheral surface of the side rail in close contact with the cylinder wall and the side rail side surface with the side surface of the piston groove to seal the gas leaking from the combustion chamber of the engine, and to prevent excessive lubrication oil from being brought into the combustion chamber of the engine. In order to satisfy the two functions of the sealing function, the side rail outer peripheral surface and the side surface must be in contact with the cylinder wall and the side surface of the piston groove so as to maintain an appropriate surface pressure during engine operation. I won't.

In the conventional combined steel oil ring in which side rails are arranged above and below the spacer expander, the side rails are extended in the radial direction by the spacer expander, and the surface roughness of the ears of the spacer expander that contacts the side rails is the side. This is an important point that influences rail behavior. It is necessary to make the surface roughness so that the side rail can follow the rapid direction change generated at the top dead center and the bottom dead center of the piston and the deformation of the cylinder due to the heat load. In this case, the roughness of the surface of the ears of the spacer expander is generally 2 μm or less. However, it has been difficult for a conventional processing apparatus to permanently guarantee a surface roughness of 2 μm or less, and it is difficult to improve oil consumption during engine operation.

Purpose of the Invention The present invention focuses on the above-mentioned conventional problems, and can permanently guarantee a predetermined roughness of the surface of the ear of the spacer expander in order to improve the followability of the side rail during engine operation. An object is to provide a processing device.

SUMMARY OF THE INVENTION The present invention solves the above problems by a drive shaft that is rotatably supported by a casing and can be equipped with a spacer expander.
A fixed L-shaped bracket whose vertical position can be adjusted with respect to the casing, a movable L-shaped bracket slidably supported by the fixed L-shaped bracket in parallel with the axis of the drive shaft, and the fixing of the movable L-shaped bracket. Ultra-hard, which has an adjusting screw for adjusting the position with respect to the L-shaped bracket and a locking means for locking the movable L-shaped bracket in the adjusted position, and which is supported by the support shaft on the fixed L-shaped bracket and the movable L-shaped bracket, respectively. This has been achieved by a spacer expander ear portion processing device characterized in that a metal polishing roller is inclinedly arranged so as to be in close contact with the tapered surface of the ear portion of the spacer expander.

By adjusting and locking the position of the fixed L-shaped bracket and the movable L-shaped bracket according to the present invention, the outer peripheral polishing surface of the polishing roller is brought into close contact with the taper surface of the ear of the spacer expander to reliably feed the spacer expander by rotating the drive shaft. Continuously polish the ears.

Embodiments Details of the present invention will be described based on embodiments shown in the drawings.

In FIGS. 1 and 2, the processing device 1 is a casing 2
And a fixed L-shaped bracket 4 fixed to the casing 2, and a movable L-shaped slidably supported on the fixed L-shaped bracket 4 in parallel with the axis of the drive shaft 3. And a bracket 5. One of the fixed L-shaped bracket 4 and the movable L-shaped bracket 5 corresponds to a dovetail-shaped guide groove 6 for the movable L-shaped bracket, and the other corresponds to the dovetail groove for the fixed L-shaped bracket 4, for example. The guide member 7 having the shape is fixed by a bolt 8 or integrally formed. The fixed L-shaped bracket 4 has a holder 9 that also serves as a stopper for preventing the movable L-shaped bracket 5 from falling off.
Are fixed with bolts 10. Of course, it is also possible to form the stopper and the holder as separate members.

As shown in FIGS. 1 to 3, an adjusting screw 11 is rotatably supported on the holder 9 so as not to move in the axial direction, and an adjusting knob 12 is detachably attached to the adjusting screw 11. . The adjusting screw 11 is screwed into the movable L-shaped bracket 5,
By rotating the adjusting screw 11 with the adjusting knob 12, the movable L-shaped bracket 5 can be moved relative to the fixed L-shaped bracket 4 in the axial direction of the drive shaft 3. A lock lever 13 is screwed into the movable L-shaped bracket 5, as shown in FIGS. 2 and 4. When the pressing plate 14 inserted into the gap formed between the guide groove 6 and the guide member 7 is pressed by turning the lock lever 13, the movable L-shaped bracket 5 is locked by the frictional force of the pressing plate 14. To be done. When the lock lever 13 is rotated in the opposite direction, the pressing force on the pressing plate 14 is released, and the movable L-shaped bracket 5 can freely slide and move.

The fixed L-shaped bracket 4 has a first supporting shaft 15 supporting a first polishing roller 16 made of a super hard alloy, and the movable L-shaped bracket 5 has a second supporting shaft 17 supporting a second polishing roller made of a super hard alloy.
18 are supported. The outer peripheral surfaces of the first and second polishing rollers 16 and 18 are in close contact with the tapered surfaces of the ears 20a of the spacer expander 20 set on the drive roller 19 fixed to the drive shaft 3, as shown in FIG. Thus, the first and second support shafts 15 and 17 are supported in an inclined state.

The fixed L-shaped bracket 4 is formed so as to be movable in the vertical direction with respect to the casing 2 in order to adjust its position.

The fixed L-shaped bracket 4 is moved downward with respect to the spacer expander 20 set on the drive roller 19 as shown in FIG. 6 to set the position of the first polishing roller 16, and the adjusting screw 11 is rotated by the adjusting knob 12. The movable L-shaped bracket 5 is moved to adjust the distance between the second polishing roller 18 and the first polishing roller 16, that is, the spacer expander 20 is sandwiched by both polishing rollers 16 and 18. Spacer expander 20
The distance between the polishing rollers 16 and 18 can be freely adjusted according to the size of the polishing roller. After further adjustment, lock lever 13
Is turned to lock the movable L-shaped bracket 5, whereby the polishing rollers 16 and 18 are relatively locked. After that, the drive shaft 3 is rotationally driven and the drive roller 19 is rotated to feed the spacer expander 20, so that the spacer expander 20 can be mirror-polished with both polishing rollers 16 and 18.

Effect According to the present invention, the spacer expander is sandwiched by both polishing rollers to have an accurate size, and the ears of the spacer expander are polished while the positions of both polishing rollers are held securely, so that the prescribed surface roughness is maintained. It has become possible to guarantee it. With this invention, the followability of the side rails to the spacer expander is improved, and the increase in oil consumption can be suppressed even under severe operating conditions such as acceleration and deceleration, and the increase in oil consumption during low boost during engine braking can be suppressed. As a result, it is possible to suppress an increase in oil consumption of the engine, which has a large cylinder deformation due to a heat load.

The present invention makes it possible to continuously and highly efficiently process the ears of the spacer expander, and to significantly reduce the tool cost and the number of tool changes.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a spacer expander ear taper surface processing device, FIG. 2 is a right side view, FIG. 3 is a plan view, FIG. 4 is a sectional view taken along line IV-IV of FIG. The figure is a partially enlarged view showing a mounted state of the spacer expander, and FIG. 6 is a sectional view taken along line VI-VI of FIG. 1 …… Spacer expander ear processing device 2 …… Casing 3 …… Drive shaft 4 …… Fixed L-shaped bracket 5 …… Movable L-shaped bracket 11 …… Adjustment screw 13 …… Lock lever (locking means) 16 …… 1st polishing roller 18 …… 2nd polishing roller 20 …… Spacer expander

Claims (1)

[Scope of utility model registration request] 1. A drive shaft rotatably supported by a casing, on which a spacer expander can be mounted, a fixed L-shaped bracket whose vertical position can be adjusted with respect to the casing, and the fixed L-shaped bracket parallel to the axis of the drive shaft. A movable L-shaped bracket slidably supported on the movable L-shaped bracket, an adjusting screw for adjusting the position of the movable L-shaped bracket with respect to the fixed L-shaped bracket, and locking means for locking the movable L-shaped bracket in the adjusted position. A spacer characterized in that a super hard metal polishing roller supported by a supporting shaft on each of the fixed L-shaped bracket and the movable L-shaped bracket is arranged so as to be intimately contactable with the tapered surface of the ear portion of the spacer expander. Expander ear processing device.