JPS5828435B2 - positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for positioning two objects that require relative positioning when they are assembled, and in particular to a cylinder block and a bearing for configuring a mechanical part of a rotary compressor. The present invention relates to a device for mutual positioning of objects.

The mechanical part of the rotary compressor shown in FIGS. 1 to 3 and 17 rotates a crankshaft 3 within a cylinder flock 1, and performs compression by rolling a roller 2 fitted into the crankshaft 3.

Therefore, in the assembly, the cylinder block 1
The clearance K between the inner wall of the roller 2 and the roller 2 requires high accuracy.

The component accuracy should be determined by calculating backwards from the assembly accuracy, but there is a limit in processing.

Furthermore, when assembling, assuming that the crank amount of the roller 2 and the crankshaft 3 is R8, the assembly dimension RQ of the inner wall of the cylinder block 1 and the bearing 4 at the specified position θ is the sum of the crank amount R8 and the clearance K. The positions of the cylinder block 1 and bearing 4 must be adjusted and assembled quickly and accurately while maintaining these positions.

Therefore, in the past, the variation width of the crank amount R8 of the roller 2 and the crankshaft 3 shown in FIG. 2 was divided into several types, and
Insert the standard cage 5 into the cylinder block 1 and bearing 4 using a standard gauge (shown in Figure 4) 5, which has the clearance K added to the median value of each, and make sure that it is in close contact with the standard cage 5 at the specified position θ. The bearing 4 was assembled to the cylinder block 1 to provide a clearance K.

However, it had the following drawbacks.

(a) Cylinder block 1
, the amount of elastic deformation is different between the bearing 4 and the standard gauge 5,
Variations occur in the set clearance K and specified position θ, making stable assembly impossible.

(b) It was impossible to adjust the assembly dimension Re to create an appropriate rear balance K for the crank amount Rs.

(C) It takes a lot of man-hours and has a high defective rate.

(d) It was not possible to quantitatively set the rear balance, making automation difficult.

The present invention solves these conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

5 to 7, a plate 7 is placed on the main body plate 6 so as to be able to slide with low torque in the Y-Y' force direction, and a block 8 fixed to the plate 6 in FIG. The plate 7 is slid in the Y direction against the spring 10 by a rotatably held screw 9, and the plate 6
The cylinder 11 is fixed to the cylinder 11 to lock it in place.

A pinion 12 is provided on the screw 9, and the plate 6
The screw 9 can be returned to its original position by driving a rack 13, which is slidably installed above and meshed with the pinion 12, by the cylinder 14.

Similarly, a roller (
(not shown), the plate 15 is held so that it can slide in the x-x' force direction, and is held against a spring 18 by a screw 17 rotatably held in a block 16 fixed to the main body plate 6. , the plate 15 can be slid to any position in the X' force direction.

The sliding plate 15 is then locked by a cylinder 19 fixed on the main body plate 6.

The screw 17 is provided with a pinion 20, and by driving the rack 21, which is slidably installed on the plate 6 and meshed with the pinion 20, with the cylinder 22, the screw 17 is returned to its original position. It is possible to return.

The bearing 4 is chucked on the plate 15.
With the blocks 23 and 24 shifted in the y/forward direction from the x-x' line by a gap greater than the allowable tolerance for the center of the inner and outer diameters of the bearing 4 relative to the center of the main body plate 6, the cylinders 25 and 24 It is supported by blocks 27 and 28 so that it can slide in the x-x' force direction.

The block 27 has a stopper 29 that determines the amount of sliding of the V block 23.

Springs 30a and 30b (FIGS. 8 to 9) for preventing the bearing 4 from floating are fixed to the blocks 23 and 24.

At the center of the main body plate 6 is a plate 1 for sliding in the Y direction.
・Without contacting 7 and the X-direction sliding plate 15,
A probe 31 fixed with a gap greater than the amount of movement in the X and Y directions is attached, and the plate 6 has an L-shaped probe that brings the cylinder block 1 into close contact with the probe 31 at the Z position in FIG. Arm 32 (Fig. 7) is Y
The arm 32 is supported by an angle 33 so as to be slidable in the direction, and the arm 32 is driven once by a cylinder 34.

Next, the probe 31 will be explained with reference to FIGS. 11 to 13.

An air passage connected to an air micrometer is formed inside the measuring head 31, and A and B are the openings thereof, and C
is an opening that opens in the direction of the clearance of the probe 31 (FIG. 11) and a specified position θ, and openings A and B (FIG. 13) are provided in the direction perpendicular to the opening C, respectively.

On the other hand, 35 shown in FIGS. 14 and 15 indicates the crank amount R
This is a crank amount measuring tool that measures the maximum amount of 8 using an air micrometer.

The operating order of the above device is as follows.

(1) Setting the crank amount R8.

That is, the roller 2 is fitted into the crankshaft 3, and the crankshaft 3 is rotated on the measuring stylus 35 to set the crank amount Rs so that the maximum value, that is, the reading of D on the air micrometer indicator becomes the maximum.

(2) Insert the cylinder block 1 and bearing 4 into the probe 31.

(3) Move the chucking cylinder 34 of the cylinder block 1 using the chucking operation switch (not shown) of the cylinder block 1, pull the arm 32 using the angle 33 as a guide, and move the cylinder block 1 to the Z-type probe 31. Close and fix in place.

(4) Chucking of bearing 4.

The bearing 4 is chucked by the ■ blocks 23 and 24 on the plate 15.

At this time, the mounting surfaces of the cylinder block 1 and the bearing 4 are brought into close contact with the plate springs 30a and 30b.

The first step is the advance of block 23.

That is, the cylinder 25 is actuated by a switch (not shown), the block 23 moves forward using the holder 27 as a guide, and after contacting the bearing 4, the plate 15 retreats until it hits the stopper 29 in the X' force direction, and the screw 17 and There will be a gap between them.

At this time, the force applied to the probe 31 is only the force of the spring 18, and the distance it moves is
Determined by

Next, as a second step, the block 24 moves forward.

That is, after the block 24 moves forward with the cylinder 26 using the holder 28 as a guide and contacts the bearing 4,
Chucking is performed between the block 23 and the block 23.

At that time, ■ Since the centers of the blocks 23 and 24 are shifted from the center of the probe 31, the plate 7 moves in the Y direction.
A gap is created between the screw 9 and the screw 9.

Note that the pressure in the cylinder 25 is greater than that in the cylinder 26.

(5) Positioning.

The air micrometer indication of measuring point 31.35 is the first.
As shown in Figure 0, its A.

Adjust the screws 9 and 17 so that the instructions for B, C, and D become A=B and C=D+K to determine the position.

Note that K is clearance (Rc Rs).

(6) Retention.

Clamp plates 7°15 with cylinders 11 and 19, respectively.

(7) Tighten the screws.

The screw driver descends upon receiving a signal to fix the plate 7.15, tightens the screw 36, secures the cylinder block 1 and the bearing 4, and then ascends.

(8) Return to origin after screw tightening is complete.

The cylinder 14.22 is activated by the signal indicating completion of screw tightening, and the racks 13, 21. The pinions 12, 20 return the screws 9, 17 to their original positions.

Meanwhile, the cylinder 34 returns and the arm 32 returns.

In other words, this device uses the roller 2 set by the measuring head 35.
and the measured value of the crank amount R8 of the crankshaft 3 (first
Using the air micrometer indication D) in Figure 0 as a reference, measure the relative position of the cylinder block 1 and bearing 4 on the probe 31 as Rc-R8+K (air micrometer indications A, B, C, and D in Figure 10). This is a positioning device that allows you to adjust the position so that it is the same, hold it in that position, assemble it with screws, etc.

The rotor 2 and shaft 3 are inserted into the assembled cylinder block 1 and bearing 4, and the mechanism is assembled in the next step as shown in FIG.

Therefore, the present invention has the following advantages.

(1) Appropriate rear balance K for crank amount R8
The assembly dimension Rc for making can be arbitrarily adjusted and set.

(2) When chucking the bearing 4 whose inner and outer diameters are eccentric, the structure is such that no large force is applied to the probe 31.

That is, only the force of the spring 10.18 changes.

(3) After adjustment, it can be firmly held in that position,
Misalignment due to tightening torque when tightening screws is less likely to occur.

(4) The number of man-hours required for positioning and assembly can be reduced.

(5) Instead of using an air micrometer to indicate the measurement points 31 and 35, take an electrical signal from the side (for example, the electrical output of an electrical micrometer), and adjust the position using the screws 9° 17 using the electrical signal from the side. Automation is very easy if it is driven by a controllable device (for example, a pulse motor).

[Brief explanation of the drawing]

1 to 3 and 17 are explanatory diagrams of the mechanical part of a rotary compressor, FIG. 4 is a front view of a conventional standard gauge, and FIG. 5 is a plan view of a device according to an embodiment of the present invention. Fig. 6 is a longitudinal front view of the same, Fig. 7 is a longitudinal right side view of the same, Figs. 8 to 9 are enlarged views of its main parts, Fig. 10 is an explanatory diagram of the air micrometer indicator, Fig. 11 ~13th
The figures are explanatory diagrams of the measuring head, Figures 14, 15, and 16.
The figure is an explanatory diagram regarding measurement using a probe. 1... Cylinder block, 2... Roller, 3... Crankshaft, 4...
・Bearing, 6...Body plate, 7...
Plate, 9... Screw, 10... Wing, 11... Cylinder, 12... Pinion, 13... Rack, 15... ...Plate, 17...Screw, 18...Spring,
19...Cylinder, 20...Pinion, 21...Rack, 22...Cylinder 23.24...■Block, 25.26・・・
... Cylinder, 29 ... Stopper, 3
0a, 30b...Flat spring for preventing floating, 31...
...Measuring head, 32...L-shaped arm.

Claims (1)

[Claims] 1. A measuring stylus that has a plurality of openings connected to an air micrometer and supports two objects to be positioned that require relative positioning, and a measuring stylus that supports one of the objects to be positioned. an arm equipped with a drive source that contacts the object, a pair of ■blocks that hold the other object to be positioned, a cylinder that drives each of the ■blocks, and x-x' on which the pair of ■blocks and cylinders are placed. table and x-x'
an elastic body that biases the table in one direction, and a Y-Y' table that supports the xx' table so that it can move in the xx' force direction and that is movable in the direction perpendicular to the XX/direction. , an elastic body that biases Y-Y' in one direction, position adjustment screws provided on the xx' table and Y-Y' table, and xx' table and Y-Y' table attached to the screws. and a fixed cylinder in contact with x-x'
■ One of the blocks on the table has a stopper to limit its stroke, and the driving force of the cylinder for driving the V block that does not have a stopper is transferred to the ■ block that has a stopper.
A positioning device characterized in that the driving force is weaker than that of the block 1 driving cylinder. The two objects to be positioned are a cylinder block and a bearing that constitute part of the mechanical part of a rotary compressor.The cylinder block is the one that comes into contact with the probe by the arm, and the other that is held between the pair of blocks is the cylinder block. The positioning device according to claim 1, which is a bearing.