JPS59125001A - Device for measuring diameter of crank shaft - Google Patents

Abstract

PURPOSE:To measure efficiently the diameter of a crank shaft by fixing a reference pin with reference rolls and a reference bolck, measuring the diameter of the reference pin with a reference detecting element and measuring the diameter of the other pin or journal with a measuring block. CONSTITUTION:A crank shaft to be measured is placed on reference rolls 21, 22, and the rolls 21, 22 are moved upward to bring a reference pin 11 into contact with a reference block 30. When the reference V block 31 of a reference block 30 begins to contact with the pin 11 and if the position of the pin 11 is deviated, the pin 11 is forcibly moved. The rolls 21, 22 are freely rotatably held to smooth the movement. Since the pin 11 contacts in at least two points with the block 31, the position of the pin 11 is fixed. The diameter of the pin and the diameter of the journal are measured in this state by the block 30 and a measuring block 40.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a device for measuring the pin diameter and journal diameter of a crankshaft.

(b) Object of the Invention There are various types of crack shafts for single cylinder use, 3 cylinder use, and 4 cylinder use. In order to determine whether these manufactured crankshafts are good or not, the pinot diameter and journal diameter are measured.

As an example of a crankshaft, an external view of a three-cylinder crankshaft is shown in FIG. In Figure 1, 1 to 4 are Jahreel,
11 to 13 are pins.

In addition, a side view of the main parts of FIG. 1 is shown in FIG. 2.

As is clear from Figure 2, journal 1 and 4 are coaxial.
However, the piers 11 to +3 are arranged in a fixed relationship with and apart from the piers 1 and -4.

Next, an example of the external view of a 4-cylinder crank/kun V-lift is shown in the 33rd page.
As shown in the figure. Figure 3 shows G-Seanal 5 and Vi/
It is shaped like an increment of 14.

Next, FIG. 4 shows a side view of the main part of FIG. 3.

In Figure 4, jars J~5 are placed on the coaxial -1 unit i9
However, the arrangement of pins/11 to 14 is significantly different from that in FIG. That is, pin 11 and pin/11
1 is coaxial.'' 2. Pin 12 and B/13 are also coaxial.

The journals 1 to 5 are spaced apart from each other in a fixed relationship with respect to the journals 1 to 5.

1 to 4 It is an object of this invention to efficiently measure the pin diameter and journal diameter of a clamp/kun 4ft having the relationship as shown in FIGS. 1 to 4.

(c) Examples of the invention A block diagram of an embodiment according to the present invention is shown in FIG.

FIG. 5 is a schematic diagram for measuring the three-cylinder crankshaft shown in FIG.

1 to 4 and 11 to 13 in FIG. 5 correspond to Sharir and Pi/ in FIG. 1, respectively. 21 and 22 are standard rolls, 3
0 is a reference block and 40 is a measurement block.

At the 5th UA, the journal 1 is moved over the reference roll 21, and the journal 4 is placed on the reference roll 22. In other words, based on the journal parts on both sides of the crankshaft to be measured! 9+ r Nord 21/22
I'll put it on.

Next, a side view of the roll 21 is shown in FIG. 6.

The base board 21 is rotatably held between 2+A and 2.
It is composed of two reference rolls of 113, and holds the Sharnal 1 so that it can rotate at a rotation angle of 113. JIU "Vl cJ-ru 22 side is also standard 1j-
The configuration is the same as that of 21.

Note that the roll 21A-2113 is held in such a way that it does not rotate.

Next, a configuration diagram of the h (quasi-block 30 part) is shown in FIG. 7. In FIG. ,3
G is a differential transformer 4r37 is 11 screws, and 38 is a spring.

FIG. 7 shows 1. of FIG. with semi-roll 2+-22
This is a state diagram in which the clamp 4 lift of FIG. 5 is raised while holding the reels 1 and 4, and the pin 11 is brought into contact with the base block 11 and the pin 30.

, 1. The +3 quasi-V block 31 moves between the guides 32 in the Z-axis direction, or is held stationary so as not to move in the X-axis and Y-axis directions.

It is clear from Figure 2 that Pinot 11 is a cylinder 1~
4, so base it on I (pin).

Therefore, Jλ quasi-V block 31 or jjj 1ull
When contacting pin/11, 1 in FIG. (Semi-L Nord 2+
With A.2111, (the position of quasi-bin II is determined logically.

The shape of the nozzle 11 V block 31 is such that it contacts the reference pin 11 at at least two locations.

In 33 to 3G of FIG. 7, fl constitutes a reference detection element, and the mutual position is kept constant with respect to the base II plug 30.
(4', l!I is done. In Figure 7, the group is detected 〃r
are attached directly to both sides of the reference V block 31.

The contactor 33 is pulled toward the pin 11 by a spring (not shown). In the example of FIG. 7, when the contactor 33 contacts the pin/11, the lever 34 rotates about the lever fulcrum 35, so the output of the differential transformer 3 changes. The pin diameter of B/11 can be measured from the output of the differential transformer 36.

Next, the configuration diagram of the if (+ constant block 40 part is shown in FIG. 8). In FIG. 8, 41 is a V block, 42 is a guide,
43 is a feeler, 44 is a lever, and 45 is a fit output device.

No. 81 No. 1 is as shown in Fig. 5 and Fig. 7),
(QQ r+ -ru 21 ・22 and standard blue lj7ri 30
After fixing the JiU Kll pinot 11, a measurement block (one hook 40) is brought into contact with the pinot 13.

Vl [A space is provided between the Jtsuk 41 and the guide 42, ■
The block 41 is allowed to move in the Y-axis direction as well as the Z-axis direction. In this way, Jili uses the floatenog mechanism in the vinegar 1 constant bu 40.
This is to ensure that the pin diameter and 71N can be determined reliably even if the position of the other pin /I2-1 [3 with respect to Q'l pin /11 is slightly deviated.

The pin diameter measuring mechanism in FIG. 8 is the same as the one in No. 7-1, and the detectors 45 are directly attached to both sides of the knocks 41.

In addition, in the example of FIG.
Two A112 scales 40 are shown, or a measurement block/
By increasing the number of IOs, measurement efficiency can be increased.

Further, if the measurement block 40 is moved in the X-axis direction, other pin diameters and journal diameters can be sequentially measured even with the configuration shown in FIG. 5.

Typical examples of Pino diameter and Charle diameter are 42, respectively.
ll and 45111+.

Next, the measurement method according to FIGS. 5 to 8 No. 1 will be explained.

4111 Place the crankshaft to be fixed 4y on the reference rolls 21 and 22, and set the reference rolls 21 and 22 by -1-
The position of the reference pin 11 of the crankshaft placed on the reference rolls 21 and 22 is not necessarily the same as that of the journals 1 to 4. It is not necessarily directly above the .

However, when the base 11 of the reference block 30 starts to touch the V block 31 or the reference bottle 11, the reference pin/11
If the position of the reference pin 11 is shifted, the reference pin 11 will be forced to move. In order to smoothly move the reference bin 11, one person holds the halo rolls 21 and 22 rotatably.

JA! Since the v1 peer 11 contacts the reference V block 31 at at least two places, the position of the base V block 31 is fixed. In this state, the reference block 30 and measurement block
Measure the pinot diameter and jar reel diameter using 0.

When measuring the four-cylinder crankshaft shown in FIG. 3, the position of the pin 11 is fixed as a reference and the other pin diameters and journal diameters are measured in the same way.

A qt cylinder crankshaft can also be measured in the same way as a multi-cylinder crankshaft. Fix the reference bottle with the J-ru and Abef(zottle), and measure the pinot diameter of the reference bottle with the quasi-detecting element, and measure the other pinot diameter or journal diameter with the measuring block. Therefore, the diameter of the crankshaft can be measured efficiently, and the measurement can also be automated.

4 Explanation of r, qj, and drawings Figure 1 is an example of an external view of a three-cylinder crankshaft.

Figure 2 is a side view of the main parts of the first part. Figure 3 is an example of an external view of a 4-cylinder Kelantan Yaft.

FIG. 4 is a side view of the main part of FIG. 3, and FIG. 5 is a jI+η diagram of the embodiment of the present invention.
The figure shows a side view of the reference roll 21, FIG. 7 shows the configuration of the reference grip 30, and FIG. 8 shows the configuration of the measurement block 40. ~14... Pin, 21/22
...Standard [1-rule, 30...-Standard block, 31
...Reference V block, 32 ...Guide, 3
3...ti2 feeler, 34...lever,
35...Lever fulcrum, 3G...Differential truss 7, 37...Block, 38...Spring, 40...71F1 constant spring ltsuk, 4]...
...V block, 42...Guide, 43 ・
...contact, 44 river, lever, 45...
Detector.

Agent: Patent Attorney Kinji Komata gi Iwao whistle 2t) 3 third meat Ward 4 5th PJ Figure 6 No. °− ]1”.

@Figure 8 ,+41 11″ 4 4 3 5 :4 ．． 42

Claims (1)

[Claims] 1. A reference block that moves in the Z-axis direction and contacts the outer diameter of the reference pinot of the crack shaft to be measured at a few points (both at two places, and a reference block on the opposite side of the λ quasi-block) a reference roll which is arranged at a position and rotatably holds the jar reels at both ends of the crankshaft; A quasi-sensing element A whose mutual position is held constant with respect to the reference pull; The position of the crack shaft is maintained constant (I!), and the crack shaft is placed in the J & semi-D
'l l? +! The reference pin is fixed by contacting the Jb special (above-mentioned) λ quasi-zero straight hook, and in this position, the pin diameter of the reference pin is measured with the reference detection cable 2r, and the reference pin is fixed. Pinot diameter and jar other than 9”
A crack shaft diameter measuring device, characterized in that the crack shaft diameter is measured by the detection element.