JPS6126900Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a radial runout measuring device for double-row spherical roller bearings, in which the rollers just before entering the load zone are aligned to the middle brim side of the inner ring during measurement. Therefore, it is an object of the present invention to provide a device that is capable of highly accurate measurement and that is also capable of measuring bearings of different sizes.

Conventional technology Measurement of radial runout of double-row spherical roller bearings
How to use” published by Japanese Standards Association, December 1, 1976,
As described on pages 62 and 63, normally the outer ring or inner ring is fixed so that an appropriate radial load is applied to the bearing, and the probe is placed at the center of the inner diameter surface of the inner ring or the outer diameter surface of the outer ring. Measure the radial runout of the inner ring or outer ring by applying it in the direction that corresponds to the load, or by placing the inner ring on a horizontal mandrel and applying the gauge head to the center of the outer diameter surface of the outer ring in the direction that corresponds to the radial load. ing. In the latter measurement, conventionally, a radial load is applied from above to below the bearing, or the weight of the outer ring is applied as a radial load, so the upper half of the bearing is the load zone. However, due to the action of gravity, the double-row spherical rollers of the bearing come into contact with or are in close proximity to the middle flange of the inner ring on the lower side of the bearing, making it difficult to plan correctly.
However, on the upper side of the bearing, the spherical rollers are placed in a position that is biased towards the small flange side of the inner ring. For this reason, even if the spherical rollers in the upper half of the bearing enter the load zone during measurement, they will not immediately return to the correctly guided state, but will continue to pass in that state. Therefore, the measurement is performed in an unstable state in which the spherical roller in the load area is not correctly guided by the inner collar of the inner ring, resulting in the problem that stable measured values cannot be obtained.

Therefore, in order to solve the above-mentioned problems, the present applicant presses the outer ring vertically upward from below the outer diameter surface with a pair of rollers having an outer circumferential surface parallel to the central axis of the bearing. The load zone is the lower half of the bearing, where the end faces are parallel on a vertical plane and a radial load is applied upward to maintain the correct relative position of the spherical rollers to the inner and outer rings. proposed a measuring method and device in which the radial runout of the inner or outer ring is measured by applying a probe in accordance with the radial direction load (see the specification and drawings of Japanese Patent Application No. 1983-47290). .

According to the above measurements, the spherical rollers move toward the inner ring's middle flange side due to their own weight, and are correctly guided by this, thereby maintaining the normal relative position of the spherical rollers with respect to the inner and outer rings in the lower half of the bearing. Since the area is measured as a load area, stable measurement results can be obtained.

Problems to be Solved by the Invention However, even with the above measurement method, the measured values often become unstable for relatively small bearings. Normally, when the inner ring or outer ring is rotated, the spherical rollers move toward the middle flange of the inner ring due to their own weight, and in the load area at the bottom of the bearing where a pair of load rollers are acting, they are guided to the middle flange of the inner ring. Outside the zone, the spherical rollers are in a free state and are closer to the small flange of the inner ring, and with small bearings, even if they enter the load zone, they do not move sufficiently toward the middle flange due to their own weight, and this occurs because they are not guided correctly. Ta.

Means for Solving the Problems This invention is based on the idea that, with the inner ring of the bearing to be measured mounted on a horizontal rotating mandrel, the outer ring of the bearing is applied to the outer ring of the bearing via a load device having a pair of load rollers parallel to the mandrel. In a device for measuring the radial runout of a bearing by applying a radial load in a direction perpendicular to the central axis of the bearing, the device is positioned to the side of a position immediately before entering the load zone from the non-load zone of the bearing to be measured, a swinging support frame with a tip facing both sides of the bearing to be measured in the axial direction;
A pair of alignment rods are always elastically pressed toward the roller end surface of the bearing to be measured, and a pair of alignment rods is swingably attached to the tips of the pair of alignment rods, and the pressing surface against the roller end surface of the bearing to be measured is spherical. The roller alignment device is equipped with a roller alignment device consisting of a shaped aligner.

Function With the above configuration, when measuring the radial runout of a double-row spherical roller bearing, the spherical rollers just before entering the load zone from the non-load zone are elastically moved from both sides in the axial direction by a pair of alignment rods. The rollers of the pair of alignment rods are arranged as spherical aligners on the pressing surfaces of the rollers, so that the spherical surfaces move sequentially from the non-load area to the load area. The end face of the roller can be smoothly guided and moved to the normal position.

Embodiments The configuration of this invention will be described below with reference to embodiments shown in the drawings.

In Figures 1 and 2, reference numeral 1 denotes a double-row self-aligning roller bearing, which is the bearing to be measured, and an inner ring 2 is mounted on a rotating disk (not shown) having a rotational axis in the horizontal direction, parallel to the rotational axis of the rotating disk. They are mounted parallel to the axis of rotation of the rotary disk by three pins protruding at equidistant positions in the circumferential direction, and so that their central axes coincide with each other in a horizontal state. Note that the three pins of the rotary disk represent a mandrel that is rotated in a horizontal state. Reference numeral 6 denotes a load device having a pair of load rollers 7, 7 disposed below the outer ring 3 of the bearing 1 to be measured. The load rollers 7, 7 have cylindrical surfaces with the same diameter, and their support shafts 8, 8 are supported by bearing members 10, 10 fixed upright on the frame 9. The support shafts 8, 8 are arranged in parallel, and the load rollers 7, 7
The outer peripheral surface of the bearing 1 is set to be parallel to the central axis of the bearing 1 to be measured. 11 is attached to the frame 9, the support shaft 8,
Both ends of the frame 9 are fixed to bearing members 13 formed on the support base 12 with pins that are parallel to the support shafts 8 and rotatably inserted on the bisector between the central axes of both support shafts 8, 8. 12 so as to be swingable. The abutment 12 has a roller slide 1 on the base 15.
〓〓〓〓
4 so that it can slide in parallel with the axial direction of the load roller 7, and the load rollers 7, 7 can be moved in the longitudinal direction via the support 12 by an appropriate moving mechanism (not shown). It has been done. A rod 16 is fixed to the base 15, passing through the center point of the axial length of the pin 11 of the abutment 12, and having a central axis perpendicular to the axial direction of the pin 11, and the lower end of the rod 16 is fixed to the base 15 with an appropriate push-up. It is coupled to a mechanism (not shown). Therefore, when the rod 16 is pushed up, the base 15
The abutment 12 can push the load rollers 7, 7 upward through the support 12. Reference numeral 17 denotes roller alignment devices arranged near the load device 6 and on both sides of the spherical rollers 4 that enter the load range of the bearing 1 to be measured. 1
Reference numerals 8 and 18 denote aligners disposed on the sides of the spherical rollers 4 immediately before entering the load zone pushed up by the load rollers 7 and 7 of the bearing to be measured 1, and at least two adjacent spherical rollers 4 and 4. The long length that presses the inner ring 2 against the middle flange 5 side is formed in a truncated spherical shape (the side of the roller pressing surface is partially spherical with a large radius of curvature). It is mounted so that it can swing freely so that it can be tilted according to the direction of the camera. The roller alignment rods 19, 19 are slidable in a direction parallel to the central axis of the bearing 1 to be measured, and are attached to the swing support frame 20,
20, and is supported by the roller alignment rod 19,
The springs 22, 22 are compressed and interposed between the regulating plates 21, 21 screwed into the roller alignment rod 19 so as to be movable in the axial direction of the roller alignment rod, and the swing support frames 20, 20, so that the springs 22, 22 always protrude toward the bearing side. It is configured to do so. The regulating plates 21, 21 change the stored elasticity of the springs 22, 22 by adjusting their mounting positions on the roller alignment rods 19, 19.
By adjusting the protrusion force of the rollers, the pressing force of the roller end faces by the aligners 18, 18 can be changed. The swing support frames 20, 20 have a boss tube 22 at the lower end attached to the bracket 2.
4, it is pivotally connected to a shaft 25 extending parallel to the central axis of the bearing 1 to be measured. The swing support frames 20, 20 have stoppers attached to the bracket 24 at positions where the aligners 18, 18 at the ends of the alignment rods 19, 19 press the spherical rollers 4, 4 just before entering the load range of the bearing 1 to be measured. (not shown) is positioned and fixed. Said bracket 2
4 and 24 are fixed separately from the load device 6 so as not to interfere with other parts.

Therefore, the aligners 18, 18 of the roller alignment device 17
Bearing 1 to be measured loaded by load rollers 7, 7
The spherical rollers 4, 4 just before entering the load zone are brought into contact with the spherical rollers 4, 4, and are pressed against the inner collar 5 side of the inner ring 2 to align them, and at the same time, the support 12 of the load device 6 is moved onto the base 15 by the moving mechanism. Then, the bearing to be measured 1 is moved horizontally in the axial direction to align the axial center line of the bearing to be measured 1 with the longitudinal center lines of the load rollers 7, 7. In this state, the rod 16 is raised by the push-up mechanism, and the outer ring 3 of the bearing to be measured 1 is placed on the outer peripheral surface of the load rollers 7, 7.
Then, by applying an appropriate push-up load to the rod 16, the outer ring 3 is
Push up and apply a vertical radial load.
In this state, the inner ring 2 or outer ring 3 is rotated, and the radial runout of each is measured by applying a measuring element (not shown) in a direction that corresponds to the radial load on the center line in the width direction of the outer diameter surface of the outer ring 3. .

During the above measurement, the bearing to be measured 1 is subjected to uniform pressure vertically upward against the outer ring 3 by the load rollers 7, 7 of the load device 6, and the lower half of the bearing to be measured 1 is in the load zone, and in addition, the lower half of the bearing to be measured is in the non-load zone. Spherical roller 4 enters the load zone from
Immediately before entering the load zone, the rollers are forcibly pushed from the side toward the middle flange 5 side of the inner ring 2 by the aligners 18, 18 of the roller alignment device 17 and aligned, so they are aligned only by their own weight as they rotate. The spherical roller 4, which is not sufficiently close to the inner ring 5, is also sufficiently close to the inner ring 5 when it enters the load zone, and is guided correctly by this, and the spherical roller 4 is moved toward the inner ring 2 and outer ring 3. Since the relative positional relationship between the two is maintained correctly, stable measurements can be performed.

In addition, the aligners 18, 18 of the roller alignment device 17
are swingably attached to the tips of the roller alignment rods 19, 19, and are always pressed in a fixed direction regardless of the inclination angle of the end surface of the spherical roller 4, so that alignment can be ensured.

Effects of the Device As explained above, this device has the inner ring of the bearing to be measured mounted on a horizontal rotating mandrel, and the outer ring of the bearing is applied to the outer ring of the bearing via a load device having a pair of load rollers parallel to the mandrel. In a device for measuring the radial runout of a bearing by applying a radial load in a direction perpendicular to the central axis of the bearing, the device is positioned to the side of a position immediately before entering the load zone from the non-load zone of the bearing to be measured, A swinging support frame is placed with the tip facing both sides of the bearing to be measured in the axial direction, and the swinging support frame is slid in a direction parallel to the central axis of the bearing to be measured〓〓〓〓
a pair of alignment rods that are supported so that they can swing and are always pressed elastically toward the roller end surface of the bearing to be measured; Since the roller alignment device is equipped with an aligner with a spherical pressing surface, when measuring radial runout of a double-row spherical roller bearing, the spherical rollers just before entering the load zone from the non-load zone can be aligned. Since the device forcibly aligns the rollers, the spherical rollers within the load range are reliably guided correctly by the middle collar, making it possible to obtain stable measurement values even with relatively small bearings. In addition, the roller alignment device is
Since it is provided on the side of the bearing to be measured and the load device, measurements can be performed without interfering with these parts and the probe.

[Brief explanation of the drawing]

FIG. 1 is a front view of a radial runout measuring device for a double-row spherical roller bearing according to the present invention, and FIG. 2 is a partially sectional side view of the measuring device. DESCRIPTION OF SYMBOLS 1... Bearing to be measured, 6... Load device, 7... Load roller, 9... Frame, 17... Roller alignment device, 18... Aligner, 19... Roller alignment rod, 20
... Swing support frame, 22 ... Spring, 24 ...
Bracket. 〓〓〓〓

Claims (1)

[Scope of utility model registration request] With the inner ring of the bearing to be measured mounted on a horizontal rotating mandrel, a radial load is applied to the outer ring of the bearing in a direction perpendicular to the central axis of the bearing via a load device having a pair of load rollers parallel to the mandrel. In a device that measures the radial runout of a bearing by applying a load to the bearing, the device is positioned to the side of the bearing to be measured at a position immediately before it enters the loaded area from the non-load area, and its tip is opposed to both sides of the bearing to be measured in the axial direction. a swinging support frame, and a pair of swinging support frames that are slidably supported by the swinging support frame in a direction parallel to the central axis of the bearing to be measured, and are always elastically pressed toward the end surface of the rollers of the bearing to be measured. and an aligner that is swingably attached to the tips of the pair of alignment rods and has a spherical press surface for pressing against the roller end surface of the bearing to be measured. Radial runout measuring device for double-row spherical roller bearings.