JPH05805Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for measuring the amount of shim between bearings of a bearing support member.

(Prior art) In general, for example, in an automobile transmission, the amount of shim between the inner races of two tapered roller bearings fitted between a shaft (shaft member) and a gear (ring member) is This has an important effect on rattling, rotational resistance, etc., so it is necessary to accurately measure this and insert shims of appropriate thickness between the inner races.

For this reason, conventionally, as shown in FIG. 2, the distance t (for example 3.03 mm) with the measuring mechanism 5. Separately, as shown in FIG. Determine the adjustment thickness from and calculate the thickness of the adjustment shim for that reference shim 1
t″ (e.g. 0.05mm).

However, since it was necessary to provide the thickness measuring mechanism 5 and the thickness measuring mechanism 6 separately, the measuring device became large-scale, and since it was also necessary to perform the measurement separately, there were problems such as a long measuring time.

(Purpose of the invention) The present invention was made in view of the above-mentioned conventional problems, and provides a measuring device that can simultaneously measure the thickness between the inner races and the thickness of the reference shim, thereby reducing the size of the device and measuring the thickness of the reference shim. The purpose is to shorten the time.

(Structure of the invention) Therefore, the present invention is an apparatus for measuring the amount of shim between the inner races of two tapered roller bearings fitted between a shaft member and a ring member, which a measurement base equipped with a dummy shaft member having a dummy shaft for temporary assembly with the two tapered roller bearings and a support portion for abutting the axially outer end surface of the inner race of one of the tapered roller bearings during temporary assembly; The axially outer end surface of the inner race of the other tapered roller bearing fitted into the dummy shaft member of the measuring base is pressed in a predetermined direction in the axial direction via a reference shim to be inserted between the inner races. a pressing mechanism that applies a preload of While measuring 〓〓〓 A measuring mechanism and a measuring element provided so as to be movable in the axial direction relative to the pressing element of the pressing mechanism and in contact with the axially outer end surface of the inner race of the other tapered roller bearing, and a thickness measuring mechanism that measures the thickness of the reference shim from the amount of relative movement of the measuring element to the pressing element with a preload applied to the reference shim by the pressing element of the pressing mechanism. The present invention provides an apparatus for measuring the amount of shims between bearings of a bearing support member, characterized in that the amount of adjusted shims is detected by simultaneously measuring the thickness of the shims.

(Effect of the invention) According to the invention, the ring member and the tapered roller bearing are inserted into the dummy shaft member of the measurement base,
With the pressing mechanism applying a preload to the other inner race via the reference shim, the distance measurement mechanism measures the distance between the inner races, and at the same time, the thickness measurement mechanism measures the thickness of the reference shim. Therefore, the distance between the inner races and the thickness of the reference shim can be measured simultaneously with one measuring device.

Therefore, the device becomes smaller, the measurement time is shortened, and the effort required for measurement is significantly reduced.

In addition, since a preload is applied to the tapered roller bearing and the reference shim, measurements can be made under conditions close to those of the actual assembly, improving the reliability of the measured values.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a measurement base 11 is installed on a lower base 10, and on the top of the measurement base 11 there is a taper roller temporarily assembled to a gear (ring member) 2, except for a shim 1. A dummy shaft portion 12 into which the inner races 4 of the bearings 3, 3 are fitted is integrally provided, and a support portion 13 on which the lower surface of the lower inner race 4 rests is provided at the base of the dummy shaft portion 12.
is provided.

Above the lower base 10 is an upper base 14.
is arranged, and the measurement base 1 is placed on the upper base 14.
The reference shim 1 is attached to the upper inner race 4 fitted to the dummy shaft portion 12 of 1 by means of a cylindrical presser 15.
A pressing mechanism 17 that applies a predetermined preload via 6 is installed.

A bracket 19 is fixed to the lower part of the measurement base 11, and a series of rod fitting holes 18 are provided through the bracket 19 and extending from the bottom surface of the measurement base 11 to the dummy shaft part 12. A measurement hole 20 is formed in the upper part of the hole 18 and is located between the upper and lower inner races 4, 4 fitted to the dummy shaft member 12. Between the upper ends of the measuring rod 21 of the measuring mechanism 27
The measuring element 22 protrudes from the measuring hole 20 between the upper and lower inner races 4, 4 by rotating the measuring rod 21, and comes into contact with the upper and lower inner races 4, 4 by vertically operating the measuring rod 21. .

The measuring rod 21 is linked in the vertical direction to a lifting rod 23 which is supported by the bracket 19 and the measuring base 11 so as to be able to move up and down, but is rotatably rotated in the rotational direction by connecting members 24, . . . . When the elevating rod 23 is moved up and down by an elevating cylinder 25 connected to the measuring rod 24 and attached to the bracket 19, the measuring rod 21 can be moved up and down.

The amount of vertical operation of the measuring rod 21, that is, the distance t between the inner races 4, 4 is measured by a distance measuring device 26 attached to the bracket 19.

The measuring rod 21 is connected to the inside of a pinion gear 28 supported by a bracket 19 via a lever 29, and when a rack 30 meshing with the pinion gear 28 is slid, it rotates via the pinion gear 28 and the lever 29. The measuring head 21 can be moved to the measuring hole 2 when necessary.
It is set to appear from 0.

On the other hand, inside the presser 15 of the press mechanism 17,
Shaft portion 34 of thickness measuring element 33 of thickness measuring mechanism 32
is provided so as to be relatively movable, and the thickness measuring element 33 protrudes from the lower end of the shaft part 34 to the outside of the press element 15 in a T-shape, and has both downward ends 33a, 33a.
is adapted to come into contact with the upper surface of the upper inner race 4.

The thickness measuring element 33 is urged downward by a spring 35 compressed between the thickness measuring element 33 and the pressing element 15, and is stopped at a predetermined protruding position by the long groove 15b of the pressing element 15.

The protruding position of the lower ends 33a, 33a of the thickness measuring element 33 is such that the dimension between it and the lower end 15a of the presser element 15 matches the upper limit dimension on the positive side of the tolerance of the thickness t' of the reference shim 16, and When the thickness t' of the inner race 16 is less than the upper limit dimension, the inner race 4 moves upward by that thickness from the position where it contacts the upper surface of the upper inner race 4.

A thickness measuring device 38 is attached to the upper part of the pressing element 15 by a bracket 37, and the thickness measuring element 3
The amount of upward movement of the shaft portion 34 of No. 3, that is, the thickness t' of the reference shim 16, is measured by this thickness measuring device 38.

On the lower base 10 on the side of the measurement base 11, a tapered roller bearing 3,
A rubber roller mechanism 40 is installed to make the dummy shaft portion 12 and the gear 2 fit.

If the measuring device is configured as described above, the lower inner race 4 of the tapered roller bearings 3, 3 is first fitted to the dummy shaft portion 12 of the measuring base 11, and then the outer races 7, 7 are fitted. The gear 2 is then fitted, and the upper inner race 4 is further fitted for temporary assembly.

Then, the reference shim 16 is placed on the upper surface of the upper inner race 4, and the upper inner race 4 is
Apply a predetermined preload to.

With this preload applied, the rubber roller mechanism 4
0, the gear 2 is rotated to fit the tapered roller bearings 3, 3 onto the dummy shaft portion 12 and the gear 2.

Then, by sliding the rack 30, the measuring rod 2 is connected via the pinion gear 28 and the lever 29.
1 is rotated to make the measuring head 22 protrude from the measuring hole 20 between the upper and lower inner races 4, 4, and then the lifting cylinder 25 is moved up and down and the measuring rod 21 is moved up and down using the lifting rod 23. Then, the distance t (for example, 3.03 mm) between the inner races 4 and 4 under preload is measured by the distance measuring device 26.

On the other hand, the lower end 15a of the presser 15 and the thickness measuring element 3
The dimension between the lower end 33a of the reference shim 16 and the lower end 33a of the reference shim 16 matches the plus side upper limit dimension (for example, 3.00 mm) of the tolerance (for example, 3+0, -0.01 mm) of the thickness t' of the reference shim 16, so the thickness of the reference shim 16 If t' is less than the upper limit dimension (for example, 2.98 mm), the thickness measuring stylus 33 will move upward by that thickness (for example, 0.02 mm) from the position where it contacts the upper surface of the inner race 4, and this upward movement will be used for thickness measurement. It is measured with a device 38.

Therefore, by comparing the measured value of the distance t between the inner races 4 and 4 (3.03 mm) and the measured value of the thickness t' of the reference shim 16 (2.98 mm), the difference in thickness t'' (0.05 mm)
When the adjustment shim is superimposed on the reference shim 16, the shim will have an appropriate thickness to be interposed between the inner races 4, 4.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the measuring device according to the present invention, Figure 2
The figure is a cross-sectional view of a conventional thickness measuring mechanism, and FIG. 3 is a cross-sectional view of a conventional thickness measuring mechanism. 2... Gear (ring member), 3... Tapered roller bearing, 4... Inner race, 11... Measurement base, 12... Dummy shaft section, 13... Support section,
15...Press element, 16...Reference shim, 17...Press mechanism, 22...Measurement head, 26...Measurement device, 27...Measurement mechanism, 32...Thickness measurement mechanism, 33 ...Thickness measuring head, 38...Thickness measuring device.

Claims (1)

[Claims for Utility Model Registration] A device for measuring the amount of shim between the inner races of two tapered roller bearings fitted between a shaft member and a ring member, A measurement base equipped with a dummy shaft member having a dummy shaft for temporary assembly with a bearing and a support portion for abutting the axially outer end surface of an inner race of one tapered roller bearing during temporary assembly; A predetermined preload is applied in the axial direction to the axially outer end surface of the inner race of the other tapered roller bearing that is fitted into the dummy shaft member of the dummy shaft member. and a measuring element protruding from a measurement hole provided on the outer circumferential surface of the dummy shaft to the space between the inner races, and measuring the distance between the inner races by displacing the measuring element in the axial direction of the dummy shaft. a measuring mechanism; and a measuring element that is provided to be movable relative to the pressing element of the pressing mechanism in the axial direction and that contacts the axially outer end surface of the inner race of the other tapered roller bearing; The thickness measurement mechanism measures the thickness of the reference shim from the amount of relative movement of the measuring element to the presser element with a preload applied to the reference shim by the pusher. A device for measuring the amount of shim between bearings of a bearing support member, characterized in that the amount of adjustment shim is detected by simultaneous measurement.