JP6726524B2 - Sliding member - Google Patents

Description

The present invention relates to a sliding member suitable for a slide bearing attached to an industrial machine such as a vulcanizer container.

Out of the components constituting the industrial machine, the consumable components that deteriorate due to use need to be replaced at an appropriate timing from the viewpoints of maintenance cost reduction and product quality improvement. For example, as a technique for predicting the optimal replacement time of a sliding member attached to the sliding part of an industrial machine such as a vulcanizer container, a wear gauge that can detect the wear amount of the sliding member in stages. There is known a technique described in Patent Document 1 that utilizes the.

This friction gauge has a circuit pattern including a plurality of parallel wear detection print lines arranged at a predetermined pitch, and these wear detection print lines are arranged along the sliding surface of the sliding member. Is attached to the side surface of the sliding member as described above. As a result, as the wear of the sliding member progresses, the wear gauge wears and is sequentially cut from the wear detecting print line on the sliding surface side of the sliding member. By detecting with an external measuring device, it is possible to grasp the progress of wear of the sliding member over time.

JP, 2008-164377, A

However, according to the technique described in Patent Document 1, since it is necessary to use the friction gauge that needs to be replaced together with the sliding member as a sensor, the running cost of the industrial machine increases accordingly. Further, when the sliding member is replaced, it is necessary to attach a friction gauge to each side surface of the new sliding member and connect the terminal of the friction gauge and the terminal of the external measuring device. Therefore, the maintenance work load increases.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a friction member that can more easily grasp the progress of wear without increasing the work load of maintenance and the running cost. ..

In order to solve the above problems, in the present invention, a recess whose depth from the sliding surface is reduced due to wear of the sliding surface is formed at the boundary between the end surface and the sliding surface that are oriented in the sliding direction. ..

For example, a sliding member according to an aspect of the present invention is a sliding member detachably attached to a second component that moves relative to the first component,
A sliding surface that slides with the first component by relative movement of the first component and the second component, and that wears due to sliding with the first component,
An end surface oriented in the sliding direction of the first component with respect to the sliding surface,
Provided on an outer periphery of the sliding surface, it has a, a recess depth is reduced from the sliding surface due to wear of the sliding surface,
As the recess,
The entire boundary portion between the sliding surface and the end surface has a step portion formed along the direction of the boundary portion .
Further, the sliding member according to another aspect of the present invention,
A sliding member detachably attached to a second component that moves relative to the first component,
A sliding surface that slides with the first component by relative movement of the first component and the second component, and that wears due to sliding with the first component,
A first and second enclosing the sliding surface, one of which is oriented in a sliding direction of the first component with respect to the sliding surface and the other of which is oriented in a direction intersecting the sliding direction. End face,
A recess whose depth from the sliding surface decreases due to wear of the sliding surface,
As the recess,
Formed on the sliding surface inclining to the first and second end surfaces so as to incline with respect to the sliding direction, the sliding surface and each of the first and second end surfaces It has a groove that reaches the boundary .

For example, as the recess, two or more recesses having different depths from the sliding surface may be formed, or a recess whose depth from the sliding surface changes stepwise is formed. May be .

According to the present invention, the wear amount of the sliding surface of the sliding member attached to the sliding portion of the industrial machine is formed at the boundary between the end surface of the sliding member and the sliding surface without using a sensor. Since the presence or absence of the recessed portion can be visually confirmed from the sliding direction, it is possible to more easily grasp the progress of wear of the sliding member without increasing the maintenance work load and running cost. be able to.

1A is a plan view of a sliding member 1A according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the line AA of FIG. FIG. 1C is an enlarged view of part B in FIG. FIG. 2 is a diagram showing an example of a sectional shape of another groove 21C. FIG. 3(A) is a plan view of a sliding member 1B according to another embodiment of the present invention, and FIG. 3(B) is a front view of FIG. 3(A). 4A is a plan view of the sliding member 1C fixed to the sliding member supporting component 50 with the grooves 21F and 21G inclined with respect to the sliding direction X, and FIG. It is a front view of FIG. 5(A) is a plan view of a sliding member 1D according to still another embodiment of the present invention, FIG. 5(B) is a front view of FIG. 5(A), and FIG. ) Is a cross-sectional view taken along line CC of FIG.

Embodiments of the present invention will be described below with reference to the drawings.

1A is a front view of a sliding member 1A according to the present embodiment, FIG. 1B is a sectional view taken along line AA of FIG. 1A, and FIG. FIG. 2 is an enlarged view of a B part in FIG.

The sliding member 1A according to the present embodiment is, for example, at least a component (two components that slide while relatively moving) constituting a sliding portion in various industrial machines such as a vulcanizer container and a machine tool. A plate-like member that is detachably attached to one component (hereinafter, referred to as a sliding member support component) 50, and slidably receives the other component (not shown: hereinafter referred to as a mating component) at the sliding surface 22. It is a sliding material. In the following, a rectangular flat plate-shaped sliding member is given as an example, but the sliding member according to the present embodiment only needs to have an outer shape according to the structure of the sliding portion of the industrial machine, for example, It may have a contour shape such as a polygon other than a rectangle or a circle. Further, it may be bent or curved.

As shown in the figure, the sliding member 1A covers a back material (back metal, resin layer, etc.) 10 and one surface (hereinafter, surface) 11 of the back material 10, and slides on the side opposite to the back material 10. And a sliding layer (a porous sintered layer, a resin layer, etc.) 20 having a moving surface 22.

The sliding member 1A is attached to the sliding member support component 50 with the sliding surface 22 facing the counterpart component. Since the fixing screw 40 for fixing the sliding member 1A is inserted into the sliding member supporting component 50, the sliding member 1A has a position corresponding to each of a plurality of screw holes 51 formed in the sliding member supporting component 50. At, a mounting hole 30 penetrating the sliding layer 20 and the back material 10 is formed. These mounting holes 30 are stepped holes in which a counterbore hole 31 having a larger diameter than the region 32 on the other surface (back surface) 12 side of the back material 10 is formed on the sliding surface 22 side. Between the head 41 of the fixing screw 40 seated on the bottom surface 33 of the counterbore 31 (the stepped surface of the mounting hole 30) and the sliding surface 22, there is a tolerance determined from the initial thickness T2 of the sliding layer 20 and the like. Since the interval T1 equal to or greater than the wear amount (the interval equal to or greater than the initial depth dimensions S1 and S2 of the grooves 21A and 21B described later) T1 is provided, when the fixing screw 40 is screwed into the screw hole 51 of the sliding member support component 50 The head 41 of the fixing screw 40 is housed in the counterbore hole 31 so as not to protrude from the sliding surface 22, and even if the amount of wear of the sliding surface 23 reaches the allowable amount of wear due to subsequent use, it contacts the mating member. There is nothing to do.

Further, on the sliding surface 22, a plurality of (21 in the present embodiment) grooves 21A and 21B having a depth that does not reach the back material 10 are formed along a predetermined direction. The depth of each groove 21A, 21B from the sliding surface 22 (the distance from the sliding surface 22 to the groove bottoms 23A, 23B) gradually decreases due to wear of the sliding surface 22.

Then, these grooves 21A, 21B all reach up to a pair of end surfaces 24A, 24B facing in the formation direction of the grooves 21A, 21B among the end surfaces 24A-24D adjacent to the sliding layer 20, The positions of the groove bottoms 23A, 23B of the respective grooves 21A, 21B are visible from the end faces 24A, 24B side. These grooves 21A and 21B and the mounting hole 30 are slidable when the sliding member 1A is fixed to the sliding member supporting component 50 by the fixing screw 40 inserted into the mounting hole 30. It has a positional relationship in which it is arranged along the relative movement direction of the counterpart component with respect to the member support component 50, that is, the sliding direction X. Therefore, the user wears the sliding surface 22 from the end surfaces 24A, 24B facing the sliding direction X without using the sensor while the sliding member 1A is attached to the sliding member supporting component 50. The accompanying decrease in the depth of each groove 21A, 21B (that is, the state of progress of wear of the sliding surface 22) can be visually confirmed.

Here, the depths of these grooves 21A and 21B are set to the dimensions S1 and S2 which are less than the allowable wear amount of the sliding layer 20 and are different from each other. Therefore, by using the positions of the groove bottoms 23A, 23B of the grooves 21A, 21B in the end faces 24A, 24B directed in the sliding direction X as an index, the user can move from the sliding member supporting component 50 to the sliding member. Without removing 1A, it is possible to visually grasp the progress state of the sliding surface 22 until the wear of the sliding surface 22 reaches the allowable wear amount. For example, in the state where the sliding surface 22 does not reach the position of the groove bottom 23A of the shallower groove (hereinafter, first groove) 21A among these grooves 21A and 21B, the wear amount of the sliding surface 22 Is less than the initial depth dimension S1 of the first groove 21A, but when the sliding surface 22 reaches the position of the groove bottom 23A of the first groove 21A, the wear of the sliding surface 22 is the first. It can be grasped at a glance from the side of the end faces 24A, 24B facing the sliding direction X that it has progressed to the same level as the initial depth dimension S1 of the groove 21A. Although the first groove 21A has completely disappeared, the sliding surface 22 has not reached the position of the groove bottom 23B of the deeper groove (hereinafter, second groove) 21B. The wear amount of the moving surface 22 is a value between the initial depth dimensions S1 and S2 of the first and second grooves 21A and 21B, but the sliding surface 22 reaches the position of the groove bottom 23B of the second groove 21B. In this case, it can be seen from the side of the end faces 24A, 24B directed in the sliding direction X that the wear of the sliding surface 22 has progressed to the same extent as the initial depth dimension S2 of the second groove 21B. Can be grasped.

For example, if the initial depth dimension S2 of the second groove 21B from the sliding surface 22 is made substantially equal to the allowable wear amount of the sliding layer 20, the second groove is positioned at the position where the wear limit of the sliding layer 20 is indicated. Since the groove bottom 23B of 21B is positioned, the user can use the second groove 21B as an index indicating the arrival of the replacement time of the sliding member 1A. In this case, the first groove 21A may be used as an index indicating the timing for securing the spare sliding member 1A. As a result, if the spare sliding member 1A is secured at the timing when the first groove 21A has completely disappeared, it is possible to reduce the inventory of the spare sliding member 1A and avoid downtime. Furthermore, since the life expiration time of the sliding member 1A under the current use conditions can be estimated based on the time required for the sliding surface 22 to reach the groove bottom 23A of the first groove 21A, the timing is determined. The deteriorated sliding member 1A can be replaced with a spare without being missed.

As described above, according to the sliding member 1A according to the present embodiment, the allowable wear amount of the sliding layer 20 can be maintained without using the sensor while the sliding member 1A is attached to the sliding member supporting component 50. Since it is possible to visually grasp the progress of wear of the sliding surface 22 until the temperature reaches, it is possible to prevent an increase in maintenance work load and running cost.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist thereof.

For example, in the above embodiment, the sliding member 1A having the sliding layer 20 and the backing material 10 is taken as an example, but the sliding member 1A does not necessarily have such a multilayer structure. There is no. For example, the sliding member 1A may be wholly formed of a resin, a composite material, or the like without using the backing material 10.

Further, in the above embodiment, the case where two grooves 21A and 21B having different depths from the sliding surface 22 are formed in the sliding surface 22 is illustrated, but the sliding surface 22 has Further, three or more grooves including two grooves 21A and 21B having different depths from the sliding surface 22 may be formed. When the depths of the three or more grooves are different from each other, the user can grasp the progress of the wear state of the sliding surface 22 more finely, and the three or more grooves can be separated from the sliding surface 22. In the case where the grooves having the same depth are included, the remaining amount of the grooves having substantially the same depth from the sliding surface 22 is further compared, whereby the wear of the sliding surface 22 progresses uniformly over the entire area. You can check at a glance whether or not you are doing it.

Further, in the above-described embodiment, the plurality of grooves 21A and 21B having different depths are formed on the sliding surface 22, but, for example, as shown in FIG. One or more grooves 21C that change in a stepwise manner may be formed in the sliding surface 22. Since the groove 21C has groove bottoms 23C1 and 23C2 at different depths S1 and S2 from the sliding surface 22, each groove bottom 23C1 in the end surfaces 24A and 24B directed in the sliding direction X, By using the position of 23C2 as a scale, the user can grasp the progress of wear of the sliding surface 22 at a glance from the end surfaces 24A, 24B side facing the sliding direction X. Although the groove 21C whose depth from the sliding surface 22 changes in two steps is shown, the depth of the groove 21C may change in three or more steps.

Further, in the above embodiment, the sliding surface 22 is formed with the grooves 21A and 21B in a predetermined direction from the one end surface 24A of the sliding member 1A to the other end surface 24B, but this is not always necessary. You don't have to. For example, as in the sliding member 1B shown in FIGS. 3A and 3B, one of the end faces 24A, 24B in which the grooves 21D, 21E that do not reach the backing material 10 are directed in the sliding direction X is determined. It may be formed so as to reach only one of the end faces. Since the positions of the groove bottoms 23D and 23E of the grooves 21D and 21E are visible from the end surfaces 24A and 24B through which the grooves 21D and 21E penetrate, the user can slide the sliding member 1A on the sliding member supporting component. Even if it is not removed from 50, it is possible to visually confirm the progress of wear of the sliding surface 22 from the end faces 24A, 24B facing the sliding direction X. Further, if such grooves 21D and 21E are formed only in the end regions in the sliding surface 22, the total opening area of the grooves 21D and 21E in the sliding surface 22 can be made smaller, so that the sliding surface 22 It is possible to prevent an increase in surface pressure due to a reduction in area. Although FIG. 3 illustrates a case where a pair of grooves 21D having the same depth from the sliding surface 22 and a groove 21E deeper than these grooves 21D are formed, the combination of the grooves is It is not limited to this.

Further, in the above, the sliding members 1A and 1B in which the grooves 21A to 21E of a predetermined direction are formed on the sliding surface 22 are arranged so that the sliding members 1A and 1B are along the sliding direction X along the grooves 21A to 21D. Although fixed to 50, the respective grooves 21A to 21D formed on the sliding surface 22 are removed with respect to the sliding direction X if the grooves 21A to 21D are removed from any of the end surfaces 24A and 24B directed in the sliding direction X. It may be inclined. For example, like the sliding member 1C shown in FIG. 4, the sliding surface 22 may be formed with grooves 21F and 21G that are drawn from each end surface to two end surfaces adjacent to this end surface. In FIG. 4, two grooves 21F and 21G reaching the end surfaces 24C and 24D on both sides of the pair of end surfaces 24A and 24B facing each other are formed. Of the two grooves 21F and 21G, for example, one groove 21F is shallower than the other groove 21G. According to such a sliding member 1C, any of the end faces 24A to 24D can be oriented in the sliding direction.

As described above, the case where the grooves 21A to 21G that are pulled out to the end faces 24A and 24B directed in the sliding direction X are formed in the sliding surface 22 has been taken as an example, but in order to visually judge the progress state of wear of the sliding surface 22. The part to be used as the index does not necessarily have a groove shape as long as it is a concave part formed at the boundary between the end faces 24A and 24B directed in the sliding direction X and the sliding surface 22. Even in the case of recesses other than the groove shape, the depth from the sliding surface 22 is reduced due to the abrasion of the sliding surface 20, so that the user can reduce the wear amount of the sliding surface of the sliding member attached to the industrial machine. The presence or absence of the recess can be visually confirmed from the end surfaces 24A and 24B of the sliding member without using a sensor. For example, like the sliding member 1D shown in FIG. 5, a step 25 may be formed as a recess at the boundary between the sliding surfaces 22 and the end surfaces 24A, 24B directed in the sliding direction X. The step portion 25 has a plurality of surfaces 25A and 25B at different depths S1 and S2 from the sliding surface 22, and by using these surfaces 25A and 25B as a scale, the user can slide the surface. The progress of wear of the sliding surface 22 of the moving member 1D can be grasped at a glance from the side of the end surfaces 24A, 24B directed in the sliding direction X. As shown in FIG. 5, the step 25 may be formed over the entire boundary between the sliding surfaces 22 and the end surfaces 24A, 24B directed in the sliding direction X, or may be formed partially. It may have been done.

Note that the above-described recess may also have a function suitable for its shape. For example, groove-shaped recesses such as the first and second grooves 21A and 21B in FIG. 1 can also be used as grease grooves and foreign matter exclusion grooves.

1A to 1D: sliding member, 10: backing material, 20: sliding layer, 21A to 21G: groove, 22: sliding surface of sliding member, 23A, 23B: groove bottom, 24A to 24D: of sliding member End face, 25: Recess, 30: Mounting hole, 31: Counterbore hole, 40: Fixing screw, 41: Head of fixing screw, 50: Sliding member supporting component, 51: Screw hole,

Claims (7)

A sliding member detachably attached to a second component that moves relative to the first component,
A sliding surface that slides with the first component by relative movement of the first component and the second component, and that wears due to sliding with the first component,
An end surface oriented in the sliding direction of the first component with respect to the sliding surface,
Provided on an outer periphery of the sliding surface, it has a, a recess depth is reduced from the sliding surface due to wear of the sliding surface,
As the recess,
A sliding member having a step portion formed along the direction of the boundary portion over the entire boundary portion between the sliding surface and the end surface . A sliding member detachably attached to a second component that moves relative to the first component,
A sliding surface that slides with the first component by relative movement of the first component and the second component, and that wears due to sliding with the first component,

A first and second enclosing the sliding surface, one of which is oriented in a sliding direction of the first component with respect to the sliding surface and the other of which is oriented in a direction intersecting the sliding direction. End face,
A recess whose depth from the sliding surface decreases due to wear of the sliding surface,
As the recess,
Formed on the sliding surface inclining to the first and second end surfaces so as to incline with respect to the sliding direction, the sliding surface and each of the first and second end surfaces Has a groove that reaches the boundary
A sliding member characterized by the above . The sliding member according to claim 2 ,
As the recess,
A sliding member having a first recess and a second recess shallower than the first recess. The sliding member according to claim 1 or 2 , wherein
As the recess,
A sliding member having a recess whose depth from the sliding surface changes stepwise. The sliding member according to any one of claims 1 to 4,
A backing material and a sliding layer laminated on the backing material and having the sliding surface on the side opposite to the backing material,
The sliding layer has the concave portion formed to a position of a depth that does not reach the back material. First and second parts that move relative to each other,
Removably attached to the second component with the end surface facing the relative movement direction of the second component with respect to the first component, and the relative distance between the first component and the second component. The sliding member according to any one of claims 1 to 5, which slides the first component and the sliding surface by various movements. The industrial machine according to claim 6,
A fixing screw for fixing the sliding member to the second component,
The sliding member is formed with a mounting hole into which the fixing screw is inserted from the sliding surface side toward the second component,
The industrial machine characterized in that the head of the fixing screw is housed in the mounting hole at a position deeper than the recess from the sliding surface.

Images