JP2013068243A - Bearing mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing mounting device in which a tapered bore bearing can be attached with an appropriate radial internal clearance without using a dial gauge even when double sealed bearing is used.SOLUTION: Scale marks 15 which align with a constant pitch in an axial direction are formed on a conical outer diameter surface 9 of a sleeve 1. The operator can directly read a push-in quantity of an inner ring 5 in the tapered bore bearing 3 by using a series of scale marks 15, and adjust the radial internal clearance based on the push-in quantity.

Description

  The present invention relates to attachment of a tapered bore bearing using an adapter sleeve or a removal sleeve.

  Conventionally, as illustrated in FIG. 14, in order to adjust the preload of the tapered hole bearing 100, a bearing mounting device including an adapter sleeve or removal sleeve 101 and a nut 102 is used. The cylindrical inner diameter surface of the adapter sleeve or removal sleeve is fitted to the cylindrical outer diameter surface of the shaft 104. The inner ring 105 of the tapered hole is fitted from the small end side to the large end side of the conical outer diameter surface 103. From the fitting position where the interference between the fitting surface of the inner ring 105 and the conical outer diameter surface 103 becomes zero, the inner ring 105 was relatively pushed axially toward the large end of the conical outer diameter surface 103. The radial internal clearance of the taper bearing 100 decreases according to the amount of pressing. The axial positions of the inner ring 105 and the sleeve 101 adjusted to a predetermined radial internal clearance can be fixed with a nut 102 screwed to the sleeve or the male screw 106 of the shaft (for example, Patent Document 1). .

  As described above, when the bearing mounting apparatus is used, a technique is employed in which an operator directly measures the radial internal clearance with the thickness gauge 107 and adjusts the radial internal clearance to a predetermined radial internal clearance. In addition, there is also a technique in which an operator measures the amount of inner ring pushed by using a dial gauge and adjusts it to a predetermined radial internal clearance.

JP 2010-89179 A

  However, the technique using the thickness gauge cannot be employed in the case of a double seal bearing. Although the method using the dial gauge can be applied to both seal bearings, it has been difficult to measure the amount of pushing and depends on the operator's feeling.

  Therefore, the problem to be solved by the present invention is to provide a bearing mounting device capable of mounting a tapered bore bearing to an appropriate radial internal clearance without using a dial gauge even if both seal bearings are used.

  A first means for achieving the above object includes a sleeve made of an adapter sleeve or a removal sleeve, and an inner ring of a tapered bore bearing is fitted to a conical outer diameter surface of the sleeve, and the inner ring is relatively fitted to the cone. In the bearing mounting device capable of adjusting the radial internal clearance in accordance with the amount of pushing in the axial direction toward the large end of the outer diameter surface, the origin position where the pushing amount is zero is provided on the conical outer diameter surface. A scale aligned in the axial direction is formed from the inner ring fitted to the large end side of the conical outer diameter surface, and the radial internal clearance can be adjusted based on the pushing amount read by the scale. A configuration that can be used is adopted. Here, in the present application, “axial direction” refers to a direction along the bearing central axis, and “radial” refers to a direction perpendicular to the bearing central axis. The “origin position where the push-in amount is zero” means a fitting position where the interference between the fitting surface of the inner ring and the conical outer diameter surface of the sleeve is zero. The concept of “circle” refers to a circle centered on the bearing central axis unless otherwise specified.

  According to this configuration, the operator uses the scale lined up in the axial direction from the inner ring fitted to the origin position where the pushing amount of the inner ring is zero to the large end side of the conical outer diameter surface to push from the origin position. Since the radial internal clearance can be adjusted based on the read indentation amount directly as the axial length, taper bore bearings can be used without using a dial gauge, even for both sealed bearings. It is possible to install up to a large radial internal clearance.

  The graduations are arranged at a constant pitch in the axial direction, and the second graduations are formed on the conical outer diameter surface so as to be axially arranged at angular positions around the bearing central axis different from the graduations. It is preferable that the graduations are arranged at positions having a certain pitch in the axial direction and shifted by a half pitch in the axial direction with respect to the graduations. The graduation and the second graduation may be formed by shifting them by a half pitch at the circumferential position at different angular positions around the center axis of the bearing while having the same pitch. The resolution of the push amount to be read can be doubled. Since it is not necessary to reduce the pitch, it is easy to see each mark, and processing to form each mark becomes easy.

  For example, if the fixed pitch is 0.5 (mm), each mark on the scale can be formed by scribing, and the resolution can be 0.25 (mm).

  When the scale is formed at two equally spaced circumferential positions on the conical outer diameter surface, the operator can, from the scale, determine the axial position of the inner ring fitted on the conical outer diameter surface in the circumferential direction. If it is read at two equally spaced locations, the presence or absence of the inner ring inclination is determined based on whether or not the axial positions of the inner rings read at these two locations are different, and the inclination is corrected using the two scales. Can do. By making it possible to check the axial position of the inner ring at two circumferentially equally spaced locations where the inclination of the inner ring appears as the maximum difference in axial position reading, the inclination of the inner ring can be reduced without reducing the interval between the scales. It is possible to facilitate discrimination.

  A second means for achieving the above object comprises a sleeve comprising an adapter sleeve or a detaching sleeve and a nut, the inner ring of the tapered bore bearing is fitted to the conical outer diameter surface of the sleeve, and the inner ring is relatively moved. The radial internal clearance is adjusted according to the amount of pushing in the axial direction toward the large end of the conical outer diameter surface, and the nut is screwed into the sleeve or the male screw of the shaft fitted with the sleeve. In the bearing mounting device that can fix the inner ring in the axial direction, one of the sleeve and the nut is formed with a scale indicating a uniform angular pitch around the bearing central axis, and the other member has A scale indicator is formed to indicate the rotation amount of the nut as a change in the angular position around the bearing center axis with respect to the scale, and the inner ring is fixed to the origin position where the push amount is zero. The amount of rotation in which the nut is further screwed is read by the set of scales and the scale indicating unit, and the inner ring is pressed based on the read amount of rotation and the lead of the nut. A configuration that can adjust the radial internal clearance is adopted.

  According to this configuration, the pushing amount of the inner ring is the rotation amount of the nut further screwed with the nut fixing the inner ring at the origin position where the pushing amount is zero, and the lead moving amount in the axial direction per one rotation of the nut. It is determined by. The information on the lead of the nut can be provided to the operator by providing a display unit as appropriate or writing it in the handling manual. A scale indicating a uniform angular pitch around the bearing central axis is formed on one of the sleeve and the nut, and a scale indicating portion indicating the rotation amount of the nut as a change in angular position around the bearing central axis is formed on the other. Therefore, the operator can read the rotation amount of the nut that has pushed the inner ring with the set of scales and the scale instruction unit, and can grasp the ratio per one rotation. The axial movement amount of the nut calculated by multiplying the read rotation amount by the nut lead corresponds to the pushing amount of the inner ring. The operator can adjust the radial internal clearance based on the pushing amount of the inner ring, so even with both seal bearings, install the tapered bore bearing to the appropriate radial internal clearance without using a dial gauge. Is possible.

  It is preferable that a second scale indicating portion is formed on the other member by shifting the angular position around the bearing center axis from the scale indicating portion by a half pitch of the angular pitch. Since the angular position with respect to the scale can be read every half pitch using the scale instruction section and the second scale instruction section, the resolution of the rotation amount can be doubled without reducing the angle pitch of the scale.

  The angular pitch may be 36 °. Since the 1/10 rotation of the nut corresponds to the axial movement amount of 1/10 of the nut lead, calculation of the inner ring pushing amount is simplified.

  When the value of the lead is displayed on the nut, the operator who turns the nut can grasp the value of the lead only by looking at the nut, and does not need to check the lead with the handling manual.

  It is preferable that the scale instruction portion is formed by a slit surface on one side of the sleeve. Since the scale instruction part is formed by finishing the cutting of the sleeve, it is not necessary to add display processing of the scale instruction part.

  More specifically, when the sleeve is made of an adapter sleeve, it is preferable that the scale is formed on the end surface of the nut on the side opposite to the inner ring. The amount of rotation of the nut can be read by simultaneously viewing from the axial direction the slit surface (scale indicator) of the adapter sleeve and the scale of the end surface on the side opposite to the inner ring of the nut that is screwed into the male thread at the small end of the adapter sleeve.

  Moreover, when the said sleeve consists of a removal sleeve, it is preferable that the said scale is formed in the outer-diameter surface of the said nut. The amount of rotation of the nut can be read by simultaneously viewing from the outer diameter side the slit surface (scale indicator) of the removal sleeve and the scale of the outer diameter surface of the nut screwed into the male screw of the shaft fitted with the removal sleeve.

  When the sleeve is made of an adapter sleeve, the scale may be formed on the small end surface of the sleeve, and the scale indicating portion may be formed on the end surface of the nut on the side opposite to the inner ring. The scale of the small end surface of the adapter sleeve and the scale indicating portion of the end surface on the side opposite to the inner ring of the nut screwed into the male thread of the small end portion of the adapter sleeve can be viewed simultaneously from the axial direction to read the amount of rotation of the nut.

  As described above, the present invention directly reads the pushing amount of the inner ring of the tapered bore bearing by using a set of scales formed on the conical outer diameter surface of the sleeve, or the scale formed on the sleeve and the nut. Since the inner ring push-in amount can be calculated based on the relationship between the rotation amount of the nut when the inner ring is pushed and the lead of the nut, read using the set and scale indicator, and the radial internal clearance can be adjusted based on the push amount. Even in the case of both seal bearings, it is possible to provide a bearing mounting device capable of mounting a tapered bore bearing to an appropriate radial internal clearance without using a dial gauge.

The whole perspective view which fractured and displayed a part of bearing mounting device concerning a 1st embodiment. Sectional drawing which cut | disconnected the bearing attachment apparatus which concerns on 1st Embodiment by the axial plane which passes along the sleeve width center The front view of the sleeve which concerns on 1st Embodiment Front view of the sleeve according to the second embodiment (A) The whole perspective view which fractured and displayed a part of bearing mounting apparatus which concerns on 3rd Embodiment, (b) The concept which showed the positional relationship of the scale of two places at the time of an inner ring inclination, and the big end side edge of an inner ring Figure Overall perspective view showing a bearing mounting device according to a fourth embodiment in a bearing mounting state Side view of nut and sleeve of bearing mounting device according to fourth embodiment Whole perspective view at the time of nut turning operation | work of the bearing attachment apparatus which concerns on 4th Embodiment Side view of nut and sleeve of bearing mounting device according to fifth embodiment Side view of nut and sleeve of bearing mounting device according to sixth embodiment Side view of nut and sleeve of bearing mounting device according to seventh embodiment Whole perspective view which fractured and displayed a part of bearing mounting device concerning an 8th embodiment Front view of sleeve and nut according to eighth embodiment Cross section of conventional example

  A bearing mounting device according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the bearing mounting device includes a sleeve 1 and a nut 2, and is for adjusting the tapered bore bearing 3 to an appropriate radial internal clearance and mounting it on the shaft 4. The tapered bore bearing 3 is a double seal bearing including an inner ring 5, an outer ring 6, and seals 7 and 7 that seal an annular space between the inner and outer rings 5 and 6.

  The sleeve 1 is composed of an adapter sleeve. The adapter sleeve refers to a sleeve having a cylindrical inner diameter surface 8 and a conical outer diameter surface 9, a screw 10 at a small end, and a cut 11 in the axial direction. The cylindrical inner diameter surface 8 is fitted to the cylindrical outer diameter surface of the shaft 4. The sleeve 1 is applied to the shaft 4 in which the interference between the both surfaces is negative in order to bring the cylindrical inner surface 8 into close contact with the cylindrical outer surface of the shaft 4. The slit 11 is formed to facilitate the fitting operation between the cylindrical inner diameter surface 8 and the cylindrical outer diameter surface of the shaft 4. The fitting surface 12 of the inner ring 5 is composed of a conical inner diameter surface having the same gradient as the conical outer diameter surface 9. Therefore, the cylindrical inner diameter surface 8 of the sleeve 1 is fitted to the cylindrical outer diameter surface of the shaft 4, and the fitting surface 12 of the inner ring 5 of the tapered bore bearing 3 is fitted to the conical outer diameter surface 9 from the axial direction. Then, there is a fitting position where the interference between the fitting surface 12 of the inner ring 5 and the conical outer diameter surface 9 of the sleeve 1 becomes zero. Hereinafter, this fitting position is simply referred to as “origin position”. The radial internal clearance of the tapered bore bearing 3 does not change to the negative side until reaching the origin position, and the origin position pushes the inner ring 5 of the tapered bore bearing 3 relatively to the large end side of the conical outer diameter surface 9. This is the starting position for the work to be carried out. In addition, what is necessary is just to confirm whether the inner ring | wheel 5 was able to be fitted to the origin position by the method currently implemented, for example, can be confirmed by the change of the hit | sound of the inner ring | wheel 5 by the clearance gap of a fitting being lose | eliminated. .

  The nut 2 can be screwed into the male screw 10 to fix the inner ring 5 at the origin position. By further screwing the nut 2 into the external thread 10, the axial propulsive force of the nut 2 is indirectly or directly transmitted to the side surface of the inner ring 5, and the inner ring 5 is relatively moved to the large end of the conical outer diameter surface 9. Can be pushed axially to the side. In this way, the radial internal clearance of the tapered bore bearing 3 can be reduced in accordance with the amount by which the inner ring 5 is pushed. If the screwing operation of the nut 2 is stopped, the relative movement of the inner ring 5 to the small end side is restricted by the nut 2, and the inner ring 5 can be fixed at the axial position when the operation is stopped.

  The sleeve 1 can also be a removal sleeve. The removal sleeve refers to a sleeve having a cylindrical inner diameter surface and a conical outer diameter surface, having a screw at the large end, and being cut in the axial direction. In the case of the removal sleeve, the nut 2 is screwed into the male screw of the shaft, and the male screw of the sleeve is used when the sleeve is pulled out.

  The nut 2 has a cylindrical outer surface with a notch 14 in the axial direction for fixing the nut 2 with one of the outer tongues of the washer 13 and for hooking a key spanner. . The washer 13 has an outer tongue for fixing the nut 2 and has one inner tongue for insertion into the slit 11 of the sleeve 1 or the axial notch of the shaft 4. The nut 2 is not limited to being manually turned, and a known adapter sleeve or a hydraulic nut for a removal sleeve can also be adopted. Instead of the washer 13, a U-shaped steel fitting (so-called stopper) used to fix the nut 2 can be used.

  The conical outer diameter surface 9 has a width applicable not only to the inner ring 5 of the tapered hole bearing 3 but also to other tapered hole bearings having different inner ring widths. The conical outer diameter surface 9 is generally formed in a conical shape having a taper 1/12 or a taper 1/30 gradient.

  The pushing amount of the inner ring 5 can be indicated by the axial length from the inner ring 5 fitted at the origin position to the large end side in the axial direction with respect to the conical outer diameter surface 9. The allowable adjustment range of the push amount of the inner ring 5 is defined in advance by the push amount of the allowable upper limit and the push amount of the allowable lower limit based on the correlation between the push amount of the inner ring 5 and the radial internal clearance of the tapered bore bearing 3. Yes. As long as the pushing amount of the inner ring 5 is within the allowable adjustment range, the radial internal clearance of the tapered bore bearing 3 is within an appropriate range. The operator can start the pushing operation after confirming the allowable adjustment range of the pushing amount defined in the tapered hole bearing 3 with an instruction book or the like.

  On the conical outer diameter surface 9, there are formed scales 15 arranged at a constant pitch in the axial direction. The scale 15 is displayed as a line having a length in the circumferential direction and a constant width in the axial direction. The operator can visually recognize the axial position of the large end side edge e at the origin position from the side of the inner ring 5 through the space between the chamfer of the inner ring 5 and the conical outer diameter surface 9. The large end side edge e of the fitting surface 12 of the inner ring 5 exists at one place on a straight line connecting the scales 15 of both ends m1 and m2 in the axial direction when located at the origin position. Accordingly, the scale 15 is arranged in the axial direction from the large end side edge e at the origin position to the large end side of the conical outer diameter surface 9 and has an axial length from the large end side edge e at the origin position toward the large end side. Will be shown.

  The scale 15 of the arrangement end m2 on the large end side is disposed on the large end side with respect to the axial position that is the allowable upper limit push amount. The measurable range of the push-in amount by the set of graduations 15 (between both ends m1 and m2) is a position closer to the smallest end of the origin positions in each tapered hole bearing to which the sleeve 1 can be applied, and each taper. It is determined so as to include a position closer to the largest end of the axial positions that is the allowable upper limit pushing amount in the hole bearing. The resolution of the pressing amount by the set of scales 15 corresponds to the constant pitch. This resolution is smaller than the minimum width of the allowable adjustment range of the push-in amount specified for each tapered bore bearing to which the sleeve 1 can be applied, and is closest to the axial position of the large end side edge e at the origin position. Is set so that the pushing amount of the inner ring 5 can be adjusted within the allowable adjustment range even when reading is regarded as the mark position on the large end side. By setting the measurable range and resolution, the scale 15 can be used in each tapered hole bearing.

  The operator refers to the set of scales 15 arranged at a constant pitch, counts the scales 15 from the axial position of the large end side edge e of the origin position to the large end side, and pushes the inner ring 5 within the allowable adjustment range. The amount of pushing of the inner ring 5 actually pushed in by counting the graduation 15 while reading the amount (destination of the large end side edge e to be targeted) or moving the large end side edge e from the origin position The radial internal clearance can be adjusted based on the read amount of the inner ring 5 that has been read. Therefore, the bearing mounting device according to the first embodiment can mount the tapered bore bearing to an appropriate radial internal clearance without using a dial gauge, even if it is a double seal bearing.

  For example, in a large bearing or a super large bearing, the width of the allowable adjustment range of the pushing amount may be defined to be 2 (mm) or more. In the case of the sleeve 1 to which such a bearing is applied, the resolution due to the set of scales 15 can be set to 1 (mm). If the allowable adjustment range of the pushing amount is 2 (mm) width from the allowable lower limit 3 (mm) to the allowable upper limit 5 (mm), the axial position of the large edge e at the origin position is before the position m3, If the position of the scale 15 at the position m3 is read as the axial position of the large edge e at the origin position, the axial position of the large edge e exceeds the scale 15 at the position m4 and before the scale 15 at the position m5. When the pushing of the inner ring 5 is stopped, the inner ring 5 can be adjusted within the allowable adjustment range.

  In addition, it is preferable that the scale 15 consists of a dent part formed with the marking, punch, etc. with respect to the conical outer diameter surface 9. FIG. This is to prevent the inner ring 5 from rubbing against the fitting surface 12. There is a limit to reducing the axial pitch between the scales 15 in order to ensure the limit of the axial pitch in which the scales 15 are processed and the visibility with which the scales 15 can be individually identified. If the scale 15 is doubled, the resolution of the push-in amount can be doubled without reducing the axial pitch.

  As an example, the second embodiment will be described with reference to FIG. Hereinafter, only differences from the first embodiment will be described. The bearing mounting device according to the second embodiment is different in that a second scale 21 arranged in the axial direction is formed on the conical outer diameter surface 9 at an angular position around the bearing central axis different from the scale 15. Yes.

  Similar to the scale 15, the second scale 21 is arranged at a constant pitch p in the axial direction, but is arranged at a position shifted from the scale 15 by a half pitch (p / 2) in the axial direction. The operator can read an axial position of an even multiple of the pitch p / 2 by one set of the scales 15 and 21, and at the same time, an axis of an odd multiple of the pitch p / 2 by the other set. The direction position can be read. Therefore, the resolution of the pushing amount of the inner ring 5 by the set of both scales 15 and 21 is p / 2, which can be doubled as compared with the first embodiment.

  For example, when the pitch p is set to 0.5 (mm), the operator can read the position in the axial direction of the large end side edge e at the origin position on the scales 15 and 21 closer to the axial direction. In the illustrated example, the axial position of the large end side edge e of the origin position is read with the scale 15, and the operator screwing the nut 2 reads the set of the scale 15 with the axial position of an even multiple of 0.25 (mm). The set of graduations 21 can be used for reading the axial position of an odd multiple of 0.25 (mm). Therefore, compared with the case where the axial pitch of the scale 15 is 0.25 (mm) in the first embodiment, the scales 15 and 21 are easily formed, and the scales 15 and 21 are easily distinguished with the naked eye. be able to. For large bearings and smaller bearings, the upper and lower limit values of the allowable adjustment range of the inner ring push-in amount may be defined by multiples of 0.25 (mm) depending on the bearing inner diameter. If the resolution of the set of 0.25 is set to 0.25 (mm), a bearing mounting device corresponding to such a bearing can be obtained.

  A third embodiment will be described with reference to FIG. The bearing mounting device according to the third embodiment is different in that scales 15 are formed at two equally spaced positions in the circumferential direction of the conical outer diameter surface 9. When the operator determines that the inner ring 5 is fitted to the origin position, the axial position of the large end side edge e is read with the two scales 15 and 15, and the large end side edge e read at these two positions is read. Whether or not the inner ring 5 is inclined in the axial direction with respect to a straight line connecting the two locations can be determined based on whether or not the axial position is different. That is, when there is an inclination of the inner ring 5, as shown in FIG. 5 (b), there is a large end side between the set of scales 15 on the upper side in the figure and the set of scales 15 on the lower side in the figure opposite to 180 °. The positions in the axial direction where the edge e overlaps are different, and the existence of the inclination becomes clear. Further, the inclination of the inner ring 5 can be corrected by changing the fitting condition of the inner ring 5 so that the axial position of the large end side edge e with respect to the two scales 15 and 15 is the same. Since the axial position can be confirmed at two circumferentially equally spaced locations where the inclination of the direction appears as the maximum difference in the axial position of the large edge e, the interval between the scales 15 is reduced. Therefore, the inclination of the inner ring 5 can be easily determined. In addition, although the illustration illustrated that the two scales 15 are formed so as to have 180 ° rotational symmetry in the circumferential direction, the scales 15 are formed at two circumferentially equal two places. By forming a scale that circulates the conical outer diameter surface 9 in the circumferential direction in a series, and by forming a scale formed at two places in two equal circumferential directions, it corresponds to most inclination directions. Is also possible.

  A fourth embodiment will be described with reference to FIGS. In the bearing mounting device according to the fourth embodiment, the sleeve 31 is formed with a scale 32 that shows a uniform angular pitch around the bearing center axis, and the nut 33 has a rotation amount of the nut 33 around the bearing center axis with respect to the scale 32. A scale indicating portion 34 is formed as a change in the angular position of the nut 33, and a display portion 35 is displayed in which the lead of the nut 33 is indicated by a value. The scale 32, the scale indicating portion 34 and the lead of the nut 33 are used to The difference is that the push-in amount can be calculated and the radial internal clearance can be adjusted based on the push-in amount.

  The small end surface of the sleeve 31 and the end surface of the nut 33 on the side opposite to the inner ring are flat surfaces along the radial plane, and are exposed in the axial direction even during the pushing operation of turning the nut 33 with a spanner. The scale 32 is formed on the small end face of the sleeve 31, and the scale indicating part 34 and the display part 35 are formed on the end face of the nut 33 on the side opposite to the inner ring. Therefore, the operator can read the scale 32, the scale instruction part 34, and the display part 35 simultaneously from the axial direction at any time while turning the nut 33.

  The scales 32 are arranged at a constant pitch in the circumferential direction. The scale 32 and the scale instructing section 34 are each displayed in a straight line having a constant width toward the bearing central axis. The operator can read the angular position around the bearing center axis of the scale indicator 34 that changes with the rotation of the nut 33 in light of the scale 32 by looking at the extension line of the scale indicator 34. In addition, in order to emphasize the reading destination using the scale instruction unit 34, an arrowhead-shaped display toward the bearing central axis is attached to the end of the scale instruction unit 34 on the bearing central axis side. The scale 32 extends to the outer diameter of the small end surface of the sleeve 31, and the scale indicating portion 34 extends to the inner peripheral edge of the end surface of the nut 33 on the side opposite to the inner ring. This is to prevent parallax during reading.

  The nut 33 in the illustrated example is a single thread having a screw pitch of 2.0 (mm) corresponding to the male screw of the sleeve 31. For this reason, the lead of the nut 33 is equal to the screw pitch. The display unit 35 indicates that “2.0” is the lead value of the nut 33 by adding “screw pitch”, which is generally familiar, instead of the lead name.

  The resolution of the amount of rotation of the nut 33 by the set of the scales 32 and the scale instruction unit 34 corresponds to a uniform angular pitch. The amount of rotation of the nut 33 in which the angular position of the scale indicator 34 around the bearing central axis changes by one angular pitch with respect to the scale 32 corresponds to 1 / equal rotation (ie, 360 ° / angle pitch). To do. The nut 33 that pushes the inner ring 5 moves in the axial direction by the 1 / equal number of the leads by the rotation of the nut 33 by the 1 / equal number. Therefore, the resolution of the axial movement amount of the nut 33 that can be calculated by the scale 32 and the lead of the nut 33 corresponds to 1 / equal number of the lead, and this corresponds to the resolution of the pushing amount of the inner ring 5. The resolution of the push amount of the inner ring 5 is smaller than the minimum width of the allowable adjustment range of the push amount defined for each tapered bore bearing to which the sleeve 31 can be applied, and the scale indicator 34 at the origin position Even when reading the angular position around the bearing center axis as the scale 32 closest to the screwing rotation direction of the nut 33, the pushing amount of the inner ring 5 is set to be within the allowable adjustment range. With this setting, the scale 32 and the scale indicator 34 can be used in each tapered hole bearing.

  In the illustrated example, the angular pitch indicated by the scale 32 is 36 ° (equal number 10). Accordingly, the resolution of the rotation amount of the nut 33 by the set of the scales 32 and the scale instruction unit 34 is 1/10 rotation, and the resolution of the pushing amount of the inner ring 5 that can be calculated using the set of the scales 32 and the lead of the nut 33. Is 1/10 of the lead. The pushing amount of the inner ring 5 into which the nut 33 is screwed from the origin position can be calculated simply by obtaining a multiple of 1/10 of the lead value (0.2 in the illustrated example).

  The operator looks at the extension line of the scale indicating portion 34 of the nut 33 that fixes the inner ring 5 at the origin position, reads the angular position around the bearing center axis of the scale indicating portion 34 with respect to the set of the scales 32, and is fixed. Referring to the set of scales 32 arranged in the circumferential direction at an angular pitch, the rotation amount of the nut 33 to be targeted (the rotation amount of the nut 33 within which the pushing amount of the inner ring 5 is within the allowable adjustment range) is calculated, While the nut 33 is further screwed in, the scale 32 that the scale indicator 34 has passed is counted to calculate the pushing amount of the inner ring 5, and the radial internal clearance is adjusted based on the read pushing amount of the inner ring 5. it can. Therefore, the bearing mounting device according to the fourth embodiment can mount the tapered bore bearing 3 up to an appropriate radial internal clearance without using a dial gauge, even if both bearings are used.

  For example, in a bearing having a large bearing or less, the width of the allowable adjustment range of the push-in amount may be defined to be 0.4 (mm) or more. In the case of the sleeve 31 to which such a bearing is applied, as shown in the illustrated example, the resolution of the rotation amount of the nut 33 is set to 1/10 rotation and the lead of the nut 33 is set to 2.0 (mm). The resolution of the pushing amount of 5 can be 0.2 (mm). If the allowable adjustment range of the push-in amount is 0.4 (mm) width with the allowable lower limit 0.8 (mm) to the allowable upper limit 1.2 (mm), when the nut 33 is screwed clockwise, the origin position If the angular position of the scale indicator 34 relative to the set of scales 32 is read as the angular position of the scale 32 at the position m11, the angular position of the scale indicator 34 is counted clockwise and the position m12 of the fourth scale 32 is obtained. If the screwing of the nut 33 (pushing of the inner ring 5) is stopped before the position m13 of the sixth scale 32, the adjustment can be made within the allowable adjustment range.

  A fifth embodiment will be described with reference to FIG. Hereinafter, only differences from the fourth embodiment will be described. In the bearing mounting device according to the fifth embodiment, the second scale instruction in which the angular position around the bearing center axis is shifted from the scale instruction part 34 by the half pitch 18 ° of the angular pitch 36 ° indicated by the scale 32 on the nut 33. The difference is that the portion 36 is formed. Since the rotation amount of the nut 33 can be read in each of the scale instruction unit 34 and the second scale instruction unit 36 for the set of the scales 32, the resolution of the rotation amount of the nut 33 without reducing the angular pitch of the scale 32. Can be doubled. Therefore, the resolution of the pushing amount of the inner ring 5 can also be doubled.

  For example, when the angle position of the scale pitch 34 at the angle pitch 36 °, the lead 2.0 (mm), and the scale indication unit 34 at the origin position corresponds to the angle position of the scale 32, the operator Of these scale indicating parts, the one that advances in the screwing rotation direction of the nut 33 and is closer to the angular position of the scale 32 can be used as a scale indicating part that indicates the position where the rotation amount of the nut 33 is zero. In the illustrated example, the scale instructing unit 34 at the origin position is at the same angular position as the scale 32, and the rotation amount of the nut 33 indicates the zero position. Further, the operator who screws the nut 33 finishes turning the nut 33 by a half pitch of 18 ° (1/20 rotation) when the angular position of the second scale designating part 36 is the same as that of the scale 32 at the position m14. It can be grasped that the pushing amount of the inner ring 5 has become 0.1 (mm), and when the screw is further screwed and the scale indicator 34 is at the same angular position as the scale 32 at the position m14, the nut 33 is moved by 36 ° ( It can be grasped that the amount of pushing of the inner ring 5 has reached 0.2 (mm) after the rotation has been completed.

  A sixth embodiment will be described with reference to FIG. The bearing mounting device according to the sixth embodiment is different in that a scale 42 is formed on the end surface of the nut 41 on the side opposite to the inner ring, and a scale indicating portion 44 is formed on the sleeve 43. The scale instructing portion 44 includes a one-side slit surface of the slit 45 of the sleeve 43. The pair of slit surfaces sandwiching the slit 45 of the sleeve 43 in the circumferential direction is formed in a planar shape along the axial direction in order to cause the diameter change of the sleeve 43 to occur in the same manner from the slit 45 over the entire length in the axial direction. (See the cut 11 in FIG. 3). Therefore, as shown in FIG. 10, the slit surfaces on both sides of the slit 45 connected to the small end surface of the sleeve 43 are wall surfaces that are exposed in the axial direction when the nut 41 is turned and generally face the bearing central axis. The slit surface can be used as the scale instruction unit 44. Since the slit surface formed by finishing the cut 45 is used for the scale instructing portion 44, it is not necessary to add display processing of the scale instructing portion by scratching the nut 41 or the sleeve 43. Note that the slit surface of the slit 45 is not a wall surface that faces the bearing center axis correctly for the sake of processing, but if the inner diameter or outer diameter of the slit surface is defined on the scale indicating portion 44, it is uniquely read from the axial direction. It is possible.

  A seventh embodiment will be described with reference to FIG. The bearing mounting device according to the seventh embodiment is different in that a second scale instruction unit 46 is added in the sixth embodiment. That is, the second scale instruction portion 46 is formed on the small end surface of the sleeve 43. Just by forming the second scale instruction section 46 from the scale instruction section 44 made of the slit surface by shifting the angular position by a half pitch of the angular pitch indicated by the scale 42, the nut 41 is formed as in the fifth embodiment. The resolution of the rotation amount can be doubled.

  An eighth embodiment will be described with reference to FIGS. In the bearing mounting device according to the eighth embodiment, the sleeve 51 is a removal sleeve, a scale 53 and a display part 54 are formed on the outer diameter surface of the nut 52, and the scale instruction part 55 is provided on one side of the slit 56 of the sleeve 51. It differs in that it consists of a slit surface. Since the sleeve 51 is a detachable sleeve, the large end surface of the sleeve 51 is pushed in the axial direction toward the inner ring 5 by a nut 52 that is screwed into the male screw 58 of the shaft 57, whereby the inner ring 5 is relatively tapered outer diameter surface 59. Can be pushed to the large end side, and the axial position of the inner ring 5 can be fixed by the nut 52. When the nut 52 is screwed and the sleeve 51 is pushed, the nut 52 covers the large end surface of the sleeve 51 from the axial direction, so that even if a scale is formed on the large end surface of the sleeve 51, it cannot be read.

  The scale 53 is arranged at a position away from each notch 60 formed at a plurality of locations in the circumferential direction of the nut 52 in order to avoid confusion when reading with the notch 60 of the nut 52. Since the scale 53, the display section 54, and the scale instruction section 55 are displayed on the outer diameter surfaces of the sleeve 51 and the nut 52, if the operator removes the spanner from the nut 52, the scale 53, the display section 54, the scale instruction section. 55 can be viewed simultaneously from the outer diameter side, and the amount of rotation by further screwing the nut 52 fixing the inner ring 5 at the origin position can be read.

  As in the fourth to eighth embodiments, the method for calculating the inner ring pushing amount from the nut rotation amount and the lead is a small type in which the pushing amount is relatively small and the allowable adjustment range of the pushing amount is narrow instead. Suitable for bearings, as in the first to third embodiments described above, the method of forming a scale on the conical outer diameter surface of the sleeve that directly measures the indentation amount as the axial length is relatively indentation. Suitable for large and super large bearings with large amount. In the system as in the first embodiment, the resolution of the push amount is easily limited in order to ensure the workability and visibility of the scale. In the method as in the fourth embodiment, the resolution of the push amount less than 0.1 (mm) can be easily obtained by selecting the angle pitch between the lead and the scale. On the other hand, in the method as in the fourth embodiment, the number of leads that can obtain a highly accurate axial movement amount is less than a few (mm), and in the case of a large pushing amount that requires multiple rotations of the nut, It is necessary to figure out how many turns it is. In the system as in the first embodiment, no matter how large the pushing amount, the operator only needs to grasp the pushing amount by the axial length.

  The technical scope of the present invention is not limited to the above-described embodiment, but includes all modifications within the scope of the technical idea based on the description of the scope of claims. For example, when a scale is formed on the removal sleeve, an end having a diameter smaller than the thread valley diameter is formed on the large end side of the male screw, and the scale is formed on the outer diameter surface of the end. The bearing mounting device according to the present invention may be applied to an open type bearing.

1, 31, 43, 51 Sleeve 2, 33, 41, 52 Nut 3 Tapered bore bearing 4, 57 Shaft 5 Inner ring 6 Outer ring 7 Seal 8 Cylindrical inner diameter surface 9, 59 Conical outer diameter surface 10, 58 Male thread 11 Cutting Ri 12 Fit surface 13 Washer 14, 60 Notch 15, 32, 42, 53 Scale 21 Second scale 34, 44, 55 Scale indicator 35, 54 Display unit 36, 46 Second scale indicator 45, 56 P pitch

Claims (12)

A sleeve comprising an adapter sleeve or a removal sleeve,
The inner ring of the tapered bore bearing is fitted to the conical outer diameter surface of the sleeve, and the radial inner clearance is according to the amount of pushing in which the inner ring is relatively pushed in the axial direction toward the large end of the conical outer diameter surface. In the bearing mounting device that can adjust the
On the conical outer diameter surface, a scale is formed in the axial direction from the inner ring fitted at the origin position where the pushing amount is zero to the large end side of the conical outer diameter surface. Further, the radial mounting clearance can be adjusted based on the pushing amount. The graduations are arranged at a constant pitch in the axial direction, and the second graduations are formed on the conical outer diameter surface so as to be axially arranged at angular positions around the bearing central axis different from the graduations,
2. The bearing mounting device according to claim 1, wherein the second scales are arranged at a position that is at a constant pitch in the axial direction and that is shifted by a half pitch in the axial direction with respect to the scales.   The bearing mounting device according to claim 2, wherein the constant pitch is 0.5 (mm) pitch.   The bearing mounting device according to any one of claims 1 to 3, wherein the scale is formed at two equally spaced circumferential positions on the conical outer diameter surface. A sleeve comprising an adapter sleeve or a removal sleeve, and a nut;
The inner ring of the tapered bore bearing is fitted to the conical outer diameter surface of the sleeve, and the radial inner clearance is according to the amount of pushing in which the inner ring is relatively pushed in the axial direction toward the large end of the conical outer diameter surface. In the bearing mounting device that can fix the inner ring in the axial direction with the nut screwed into the male screw of the shaft fitted with the sleeve or the sleeve,
Of the sleeve and the nut, one member is provided with a scale indicating an equally spaced angular pitch around the bearing center axis, and the other member is provided with an angle about the bearing center axis with respect to the scale. A scale indicating portion is formed as a change in position,
The rotation amount obtained by further screwing the nut fixing the inner ring at the origin position where the pushing amount is zero is read by the scale and the scale indicating unit, and the read rotation amount and the lead of the nut are read. A bearing mounting device characterized in that the radial internal clearance can be adjusted based on the calculated pushing amount of the inner ring.   The bearing mounting device according to claim 5, wherein a second scale instructing portion is formed on the other member by shifting an angular position around the bearing central axis from the scale instructing portion by a half pitch of the angular pitch.   The bearing mounting device according to claim 5 or 6, wherein the angular pitch is 36 °.   The bearing mounting device according to claim 7, wherein a value of the lead is displayed on the nut.   The bearing mounting device according to any one of claims 5 to 8, wherein the scale instructing portion includes a slit-side slit surface of the sleeve. The sleeve comprises an adapter sleeve;
The bearing mounting device according to claim 9, wherein the scale is formed on an end surface of the nut on the side opposite to the inner ring. The sleeve comprises a removal sleeve;
The bearing mounting device according to claim 9, wherein the scale is formed on an outer diameter surface of the nut. The sleeve comprises an adapter sleeve;
The scale is formed on a small end surface of the sleeve;
The bearing mounting device according to any one of claims 5 to 8, wherein the scale instruction portion is formed on an end surface of the nut on the side opposite to the inner ring.

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