KR100857169B1 - Adhesive strength testing apparatus of solid lubricant for oilless bearing - Google Patents

Abstract

The present invention relates to an adhesion tester configured to automatically test the adhesion between a solid lubricant inserted into a hole provided in a metal base material of an oilless bearing and an adhesive for bonding the solid lubricant to the metal base material. A pressure roller having a coating layer coated with a material of high elasticity, a drive motor for driving the pressure roller, a power transmission unit connected to the drive motor to rotate the pressure roller, a housing surrounding the drive motor and the pressure roller, and a housing A tester main body having a main body support for supporting, a drive rail provided along the longitudinal direction of the main body support, and a rail connection part moving along the drive rail and connecting the housing to the main body support; A tester vertical drive unit connected to a tester main body to drive the pressure roller up and down; A pair of support rollers for supporting the oilless bearing pressurized by the pressure roller, and a support body having a long movable rod fixing hole; A stopper portion; A movable rod moved up and down; A pair of fixed rods installed on both sides of the upper portion of the movable rod; A link; The support roller insertion groove for inserting the support roller is formed in the upper portion and provided with a rod fixing part for fixing the fixed rod, the support roller can be moved left and right according to the shangdong of the movable rod.

Oilless bearing, solid lubricant, adhesive force, test, pressure roller, support roller

Description

ADHESIVE STRENGTH TESTING APPARATUS OF SOLID LUBRICANT FOR OILLESS BEARING}

1 is a perspective view showing a tester according to the present invention.

2 is a front view showing a tester according to the present invention.

3 is a side view showing a tester according to the present invention.

4 is an enlarged perspective view illustrating an enlarged portion A of FIG. 1.

FIG. 5 is a view showing an oilless bearing, FIG. 5A is a perspective view thereof, and FIG. 5B is a view showing a contact point between a pressure roller and a support roller.

6 is a view schematically showing a state in which the pressure roller of the tester according to the present invention pressurizes the oilless bearing.

<Description of the symbols for the main parts of the drawings>

1: Adhesion Tester 2: Tester Up and Down Drive

3: tester body part 4: tester support part

10: driving cylinder 11: first piston

20: pressure roller 20a: coating layer

21 case 22: pressure roller drive motor

23: main body support 24: drive rail

25: rail connection part 30: support roller

31: second piston 32: support body

33a: movable rod 33b: fixed rod

34: Link 35: Rodgo Government

36: stopper portion 37: protrusion

38: support roller groove 39: support roller fixing rod

40: support

The present invention relates to an adhesion tester of an oilless bearing, and more specifically, to a solid lubricant inserted into a hole installed in a metal base material of an oilless bearing and an adhesive force of an adhesive for bonding the solid lubricant to the metal base material automatically. Adhesion tester configured to be able to test.

In general, oilless bearings realize non-lubrication where refueling is difficult or undesirable, such as high temperature, low temperature, corrosive atmosphere, foreign material inflow, impact load and vibration, and structural refueling. A bearing that can reduce costs and improve productivity.

Most of the mechanisms operate several components by the rotational movement of the shaft, and in order to facilitate the rotational movement of the shaft, bearings are installed on the support of the shaft. In addition, the bearing installed as described above is smoothly rotated by supplying lubricating oil periodically or continuously to minimize friction.

Where it is difficult to supply lubricating oil to the bearings, for example, where the installation location of the bearings is underwater, high or low temperatures, or when there is concern about contamination or product defects due to lubrication, or it is difficult to periodically lubricate the machine structure It is a special bearing used in the production of oil, and oilless bearings which do not require lubricating oil are periodically installed to promote smooth rotation of the shaft.

These oilless bearings should play a role of self-lubrication and bearings after the first lubricant supply.The main components are self-lubricating copper materials and solid lubricants. do.

As an example of such an oilless bearing, a lubricant hole is formed in a non-ferrous hollow body at a predetermined interval in a radial direction, and a solid lubricant made of graphite, artificial graphite, Teflon, or the like is inserted and fixed in the lubricant hole. It is. A rod-shaped lubricant having a predetermined length is inserted into a lubricant hole formed in the bearing body in a state where an epoxy hardener is applied to the outer circumferential surface, and then the inner and outer surfaces of the body and the lubricant are smoothly processed to complete the process.

As a basic performance of the finished oilless bearing, the adhesion between the solid lubricant and the body must maintain a constant bond strength despite the external load, and the bond strength must not be lost until it is used as a final mechanical part.

For this purpose, the solid lubricant should have a surface height that matches the surface height of the inner and outer diameters of the oilless bearing, and it is a general criterion that the solid lubricant should maintain adhesion even at a constant external pressure, for example, 5 kg / cm 2.

However, in the past, the test of whether such a criterion is satisfied is performed by pressing a user's finger, etc., on which the solid lubricant is installed, so as not to fall into the force. Therefore, there is a need for a method that can automatically test the adhesion between the solid lubricant and the body, rather than an inaccurate test by human hands.

The present invention is to solve the problems of the prior art described above, by pressing the outer diameter of the oilless bearing using a pressure roller coated with a coating layer having a high elasticity bonding strength of the solid lubricant and the bearing body inserted into the oilless bearing An object of the present invention is to provide an adhesion tester for oilless bearings which can be tested simply.

In addition, another object of the present invention, by further comprising a support roller capable of supporting the oilless bearing pressurized by the pressure roller, by configuring the support roller to be moved to a position forming a triangle with the pressure roller In addition, the present invention provides an oilless bearing adhesion tester capable of more stably testing adhesion.

In order to achieve the above object, the solid lubricant adhesion tester of the oilless bearing according to the present invention, in the solid lubricant adhesion tester of the oilless bearing, the main body portion of the tester equipped with a pressure roller for pressing the outer diameter of the oilless bearing; And a tester up-and-down drive part connected to the tester main body to drive the pressure roller up and down, and a tester support part installed at a lower portion of the pressure roller to support an oilless bearing that is pressurized. It characterized in that it further comprises a coating layer coated with.

The tester main body includes a drive motor for driving the pressure roller, a power transmission part connected to the drive motor to rotate the pressure roller, a housing surrounding the drive motor and the pressure roller, and supporting the housing. It further comprises a main body support portion, a drive rail provided along the longitudinal direction of the main body support portion, and a rail connecting portion moving along the drive rail and connecting the housing to the main body support portion.

The tester vertical drive unit may further include a driving cylinder provided on an upper portion of the main body support unit, and a first piston connected to the housing to move the housing up and down by driving of the driving cylinder.

The tester support portion may further include a pair of support rollers for supporting the oilless bearing pressurized by the pressure roller.

In addition, the tester support portion, the support portion body formed with a long movable rod fixing hole; A stopper part formed on both sides of an extension part extending downward in a vertical direction and installed on an upper portion of the support part body; A movable rod inserted into the movable rod fixing hole formed in the support body to move up and down along the movable rod fixing hole; A pair of fixed rods installed on both sides of the upper portion of the movable rod; A connection link having a pair of through holes into which the movable rod and the fixed rod are inserted; The support roller insertion groove for inserting the support roller is formed in the upper portion and provided with a rod fixing portion for fixing the fixed rod passing through the connecting link, the support roller is left and right according to the shangdong of the movable rod Characterized in that configured to be moved to.

The fixed rod portion further comprises a projection inserted into the space between the stopper portion and the support body.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the solid lubricant adhesion tester of the oilless bearing according to the present invention.

1 is a perspective view showing a tester according to the present invention, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is an enlarged perspective view showing an enlarged portion A of FIG.

As shown in FIGS. 1-4, the tester 1 which concerns on this invention is comprised from the tester up-and-down drive part 2, the tester main-body part 3, and the tester support part 4. As shown in FIG.

The tester main body 3 includes a pressure roller 20, a housing 21, a pressure roller drive motor 22, a main body support 23, a drive rail 24, and a rail connecting portion 25. And a power transmission unit 26 and a rail connection unit 28.

The pressure roller 20 is formed in a substantially cylindrical shape, and is moved up and down by the driving of a driving cylinder described later to press the oilless bearing 5 supplied to the lower portion of the pressure roller 20. The outer side of the cylinder of the pressure roller 20 is provided with a coating layer (20a) along the cylinder.

In the present embodiment, the coating layer 20a is preferably formed of, for example, urethane or silicon, but is not necessarily limited thereto.

When the pressure roller 20 provided with the coating layer 20a presses the oilless bearing 5 supplied to the lower portion by the driving of the driving cylinder, as shown in FIG. 6, the pressure roller pressed by the driving cylinder is shown. The coating layer 20a of 20 is pressed by the surface of the oilless bearing 5 to press the solid lubricant 7 disposed in the lubricant hole 6 formed in the bearing body at a constant pressure.

In the present embodiment, the solid lubricant 7 uses a solid graphite lubricant made of graphite.

As shown in Fig. 1 and Fig. 3, the tester main body portion 3 includes a main body support portion 23 formed in a substantially L-shape, and the driving rail 24 is disposed along a vertical direction of the main body support portion 23. It is prepared.

The rail connecting portion 25 is engaged with the driving rail 24, and the rail connecting portion 25 is configured to move up and down along the driving rail 24. The rail connecting portion 25 is fixed to the housing 21 surrounding the pressure roller drive motor 22 and the pressure roller 20. The housing 21 is composed of a front and rear panel to protect the drive motor and the pressure roller, both panels to protect the drive motor and an upper panel to protect the drive motor, the drive motor and the pressure roller The partition panel is provided between them, and the rear panel is fixed to the rail connection part.

In addition, the upper panel of the housing 21 is connected to the first piston of the tester up and down drive unit described later.

The drive motor 22 and the pressure roller 20 are connected by power transmission units 26 and 28 such as gears and pulleys, and the pressure roller 20 is driven to rotate by driving the drive motor.

The tester vertical drive unit 2 is composed of a drive cylinder 10 and a first piston 11. The drive cylinder 10 is installed in the drive cylinder housing 10a, and the drive cylinder housing 10a is installed above the main body support 23.

The drive cylinder 10 is connected to the first piston 11, the first piston 11 is fixed to the upper panel of the housing 21 through the upper surface of the body support 23. . In the present embodiment, the driving roller is driven up and down, but the driving cylinder is taken as an example, but the present invention is not limited thereto, and it is also possible to install the drive motor and drive the drive up and down by means such as a drive motor, a chain, and a gear.

By the above-described configuration, when the first cylinder 11 connected to the drive cylinder 10 is driven up and down by driving the drive cylinder 10, by the up and down drive of the first piston 11, The housing 21 connected to the first piston 11 is moved up and down along the driving rail 24 through the rail connecting portion 25 connected to the housing.

Then, the pressure roller 20 is moved downward so that the coating layer 20a of the pressure roller 20 is pressed on the outer circumferential surface of the supplied oilless bearing 5, and then the pressure roller driving motor 22 is moved. While driving to rotate the pressure roller 20 by the power transmission unit (26, 28), by pressing the outer peripheral surface of the oilless bearing 5 by the coating layer (20a) solid lubricant of the oilless bearing (7) ) And the adhesion between the oilless body.

On the other hand, the tester support portion 4 is installed in the lower portion of the pressure roller 20.

The tester support part 4 includes a pair of support rollers 30 for supporting an oilless bearing pressurized by the pressure roller, and the pair of support rollers are movable relative to each other in left and right sides. The pressure roller 20 and the pair of support rollers 30 are configured to have a substantially triangular arrangement around the supplied oilless bearing 5 to support the pair of pressure rollers when pressurized by the pressure rollers. The roller 30 is comprised so that a stable test can be performed by the stable support point.

To this end, as shown in FIGS. 1, 3 and 4, the tester support part 4 includes a pair of support rollers 30, a second piston 31, a support part body 32, and movable parts. The rod 33a, the connecting link 34, the fixed rod 33b, the rod fixing part 35, the stopper part 36, and the support 40 are comprised.

The said support part body 32 is formed in substantially T-shape, and is arrange | positioned in the front and back surface of the said tester support part 4. An elongated movable rod fixing hole 32a is formed in an approximately center portion of the support part body 32. The movable rod fixing hole 32a, which will be described later, is fastened to the movable rod fixing hole 32a, so that the movable rod fixing hole is formed. It moves up and down within 32a.

The stopper part 36 formed in a shape in which the letter C is rotated by 90 ° is installed and fixed to the upper part of the support part body 32, and a space is provided between the upper surface of the support part body 32 and the stopper part 36. It is comprised so that the protrusion part 37 mentioned later in this space can move to left and right.

The rod-shaped movable rod 33a is fastened to the movable rod fixing hole 32a, and the movable rod 33a is also inserted through the first hole 34a provided in the connecting link 34. As shown in FIG. 3, connection links 34 are provided in both upper and lower directions about the movable rod 33a. In addition, a second piston 31 is connected to a central portion of the movable rod 33a, and the movable rod 33a is in the movable rod fixing hole 32a by vertically driving the second piston 31. Is moved up and down in.

Four connecting links 34 are disposed in front and rear and on both sides thereof, and each connecting link includes a first hole 34a through which the movable rod 33a is inserted and a second through which the fixing rod 33b is inserted. The hole 34b is provided.

The rod-shaped fixing rod 33b that penetrates the second hole 34b is fixed to the rod fixing part 35. The rod fixing part 35 is disposed on the rear side of the support part body 32, and a support roller insertion groove 38 for inserting the support roller is provided at one side upper portion. In addition, the rod fixing portion 35 further includes a protrusion 37 formed to protrude from the rod fixing portion main body. The protrusion 37 is inserted into a space between the support part body 32 and the stopper part 36 to move left and right, and the maximum spaced position is limited by contacting the stopper part 36.

The support roller rod 39 is inserted into the support roller insertion groove 38, and a support 40 for discharging the oilless bearing 5 is disposed on the rod fixing part 35. It is.

The operation of the tester support 4 having the configuration as described above will be described.

When the second piston 31 is driven upward by a separate driving motor (not shown), the movable rod 33a connected to the second piston 31 is movable in the support body 32. The rod moves upward along the rod fixing hole 32a. Accordingly, the connecting link 34 inserted through the movable rod 33a transmits a force so that the fixed rod 33b connected to the connecting link 34 is spread to both sides. As the fixed rod 33b opens to both sides around the movable rod 33a, the rod fixing part 35 to which the fixed rod 33b is fixed also moves to both sides.

Accordingly, the support roller 30 fitted into the support roller insertion groove 38 provided on the upper side of the rod fixing part 35 also moves to both sides with respect to the movable rod 33a.

Then, as the rod fixing portion 35 moves to both sides, the protrusions 37 provided on the rod fixing portion are moved to both sides in the space between the stopper portion 36 and the support body 32. After the movement, the movement stops in contact with the stopper portion 36, whereby the support roller is no longer opened.

The support roller 30 moved as described above forms a triangle around the oilless bearing 5 together with the pressure roller 20 to enable a stable arrangement.

Then, when the oilless bearing 5 is supplied, the pressure roller is driven up and down as described above, and the pressure roller is driven to rotate by the pressure roller drive motor, and the oilless bearing in contact with the pressure roller 20 ( 5) can be tested for the adhesive force while the support roller 30, which supports the oilless bearing on both lower sides by the rotation of the oilless bearing 5, also rotates in the support roller insertion groove. I support it.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings attached to this specification clearly show some of the technical ideas included in the present invention, and modifications that can be easily inferred by those skilled in the art within the scope of the technical ideas included in the specification and drawings of the present invention. It is obvious that both and specific embodiments are included in the scope of the technical idea of the present invention.

As described above, according to the present invention, by pressing the outer diameter of the oilless bearing using a pressure roller coated with a coating layer having a high elasticity, the bonding force between the solid lubricant and the bearing body inserted into the oilless bearing can be easily tested. Therefore, as in the adhesion test of the conventional oilless bearing, it is possible to test the adhesion more accurately and simply than in the case of directly testing the adhesion by pressing by a human hand.

Further, further comprising a support roller capable of supporting the oilless bearing pressurized by the pressure roller, the support roller is configured to be movable to a position forming a triangle with the pressure roller, to test the adhesive force more stably can do.

Claims (6)

In the solid lubricant adhesion tester of oilless bearing, A tester main body 3 equipped with a pressure roller 20 for pressing the outer diameter of the oilless bearing 5, A tester up-and-down driving part 2 connected to the tester main body 3 to drive the pressure roller 20 up and down; It is provided with a tester support part 4 for supporting the oilless bearing (5) which is installed in the lower portion of the pressure roller 20, and The pressure roller 20 is an oilless bearing solid lubricant adhesion tester, characterized in that it further comprises a coating layer (20a) coated with an elastic material. According to claim 1, wherein the tester body portion 3, A pressure roller drive motor 22 for driving the pressure roller; A power transmission unit (26, 28) connected to the pressure roller drive motor (22) to rotate the pressure roller (20); A housing 21 surrounding the pressure roller drive motor 22 and the pressure roller 20; A main body support part 23 for supporting the housing 21; A driving rail 24 installed along the longitudinal direction of the main body support 23; The rail connecting portion 25 is moved along the driving rail 24 and connects the housing 21 to the main body support. Oil lubricant bearing solid lubricant adhesion tester further comprising. According to claim 2, wherein the tester vertical drive unit 2, A driving cylinder 10 provided on an upper portion of the main body support 23; The first piston 11 is connected to the housing 21 to move the housing 21 up and down by driving the drive cylinder 10. Oil lubricant bearing solid lubricant adhesion tester further comprising. According to claim 1, wherein the tester support (4), Oil lubricant bearing solid lubricant adhesion tester further comprises a pair of support rollers 30 for supporting the oilless bearing pressurized by the pressure roller (20). 5. The tester support part 4 according to claim 4, A support part body 32 in which the movable rod fixing hole 32a is formed long; A stopper part 36 formed on both sides of the extension part extending downward in a vertical direction and installed on an upper portion of the support part body 32; A movable rod (33a) inserted into the movable rod fixing hole (32a) formed in the support body to move up and down along the movable rod fixing hole; A pair of fixed rods 33b installed on both sides of the upper portion of the movable rod; A connection link 34 provided at both sides of a first hole through which the movable rod penetrates and a second hole through which the fixed rod penetrates; The support roller insertion groove 38 for inserting the support roller is formed in the upper portion and the rod fixing part 35 to which the fixed rod passing through the connection link is fixed. Oil lubricant bearing solid lubricant adhesion tester further comprising. 6. The oilless bearing according to claim 5, wherein the rod fixing part (35) further includes a protrusion (37) inserted into a space between the stopper part (36) and the support body (32). Solid lubricant adhesion tester.

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