JPH0225135B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface property measuring device for measuring the resistance of the surface of an object to friction, scratching, coating properties, peeling, etc.

The surface properties of objects include resistance to friction,
There are various resistances such as resistance to scratching and filmability and resistance to peel strength. When investigating these resistance forces, conventionally, measurements are carried out using different measuring machines for each purpose, which requires separate expensive measuring machines, and it is extremely inconvenient to use different measuring machines with different operating methods. It was hot.

Moreover, in the case of measurements requiring observation, there is a drawback that errors may occur in the measured values if different persons measure the measurement due to their habits or the like.

In view of such conventional problems, the present invention has been developed by appropriately replacing various attachments for measurement.
The purpose of this device is to measure the surface properties of an object using a single measuring device, and its configuration is such that the upper end of a vertical arm 5 is pivotally supported on a support portion 2 provided on a main body 1. A mounting piece 7 that pivotally supports approximately the middle part of the horizontal arm 9 is fixed to the lower end of the vertical arm 5,
A lever piece 15 for lifting and hooking the tip of the horizontal arm is rotatably attached to the mounting piece 7, and various attachments for measurement are detachably attached to the boss portion 18 attached to the tip of the horizontal arm. A measuring element 20 having a scratching needle 22 on the lower part and a saucer 21 on the upper part is attached so as to be movable up and down, and a tightening bolt 19 for fixing the measuring element is attached to the boss part 18, and the other end side of the horizontal arm 9 is attached. Balancers 31 and 34 for adjusting the vertical load of the probe 20 are movably attached to the engagement recess 24 provided at the other end of the horizontal arm 9.
and a detector 29 connected to a known displacement transducer 27 mounted on the main body so as to be movable forward and backward are engaged in a linear direction, and on the main body 1 located below the measuring element 20, the measuring element 20 The main body 1 is equipped with a movable table 36 that can be moved forward and backward by a motor 39 built into the main body, and a known dynamic strain measuring device 43 for measuring the resistance value detected by the displacement converter is provided on the main body 1. .

Embodiments of the present invention will be described based on the drawings.

In Figures 1 and 2, the upper end of the vertical arm 5 is pivotally supported on a support shaft 3 attached to the upper part of the support part 2 established at the center of the upper part of the main body 1, and the swing range of the lower end of the vertical arm is In order to regulate the movement, control elements 4 are attached to both sides of the support part 2 so as to be movable forward and backward, and the control elements 4 are rotated to move forward and backward to bring their tips into contact with and away from both sides of the vertical arm 5. The vertical arm can be fixed or its range of motion can be adjusted.

In FIGS. 1 to 5, a U-shaped mounting piece 7 fixed downward to the lower end of the vertical arm 5 has a shaft that extends horizontally through a connecting part 10 located approximately in the middle of the horizontal arm 9. 11 is pivotally supported at both ends to form a central fulcrum 8. A rotator 14 is fixed to one end of a shaft 13 which is rotatably supported horizontally on the other side of the upper part of the mounting piece 7, and a lever piece 15 whose one end is pivotally attached to the middle part of the shaft 13. By rotating, one side of the connecting part 10 integrated with the horizontal arm 9 is pushed down, and the measuring head 20, which will be described later and is attached to the tip of the horizontal arm 9, can be attached to and removed from the lower part of the measuring head 20 while keeping it in a lifted state. It is possible to easily replace various attachments for measurement that are attached to the device.

In Figures 1, 3, and 9, a weight 55 is used to apply a vertical load to the upper part of the gauge head 20, which is vertically movably attached to the boss portion 18 attached to the tip of the horizontal arm 9.
A receiving tray 21 is provided on which the specimen is placed, and various attachments are attached to the lower part of the probe 20, and a scratching needle 22 is provided for forming scratches on the test piece.

In Figs. 1 to 3, a boss 18 fixed to the tip of the horizontal arm 9 has a tightening bolt for freely adjusting the height of the probe 20 and fixing it in any position. 19 is installed.

In FIGS. 1, 2, and 6, a connecting portion 25 having an engaging recess 24 is fixed to the other end of the horizontal arm 9,
A detector 29 is attached to the tip of a rod 28 that is connected to a known displacement converter 27 such as a strain gauge type displacement transducer or a load cell that is movably mounted on the left side of the upper surface of the main body 1, and an engagement recess 24. are free to engage with each other in the vertical direction and only in the linear direction, and the free portion of the horizontal arm 9 in the linear direction allows the displacement converter 27 to be moved forward or backward by rotating the adjuster 30 attached to the displacement converter 27. It can be absorbed. Further, the horizontal arm 9 pivots around the central fulcrum 8, and has an engaging recess 2 attached to the other end of the horizontal arm 9.
4 moves up and down, the structure is such that no unreasonable force is applied to the detector 29.

In FIGS. 1 to 3, in order to offset the weight of the measuring element 20 attached to the tip of the horizontal arm 9 and the various attachments attached to the scratching needle 22,
After the first balancer 31 is movably attached to the other end of the horizontal arm 9 and the balancer 31 is roughly adjusted, the stator 32 attached to the balancer is adjusted.
It is tightened and fixed to the horizontal arm 9 by tightening. Further, by rotating and finely adjusting the second balancer 34 which is threaded onto the threaded rod 33 attached to the balancer 31, the left and right sides of the central fulcrum 8 of the horizontal arm 9 can be balanced.

1 to 3 and 7, a movable table 36 is attached to the right side of the upper surface of the main body 1 so as to be movable forward and backward, positioned below the measuring element 20, and a holder 37 is attached to one end of the movable table 36. A rack 38 provided on the lower surface of the moving table 36 is engaged with a gear 41 that interlocks a geared motor 39 built into the main body 1 via a belt 40, so that the moving table 36 can be moved at a constant speed. . In the figure, 44 is an operation panel.

Next, the operation of this embodiment will be explained.

The first case is when measuring scratch resistance and coating resistance.
This will be explained based on FIG.

One end of the test piece 60 for measurement placed on the moving table 36 is fixed to the holder 37, and the moving table 36 is placed on the second
The balancer 31 attached to the horizontal arm 9 to which the gauge head 20 is connected is moved to the left side in the figure, and the balancer 31 attached to the horizontal arm 9 to which the gauge head 20 is connected is roughly moved in the left-right direction to balance the left and right sides of the horizontal arm 9 using the central fulcrum 8 as a fulcrum. The horizontal arm 9 is held horizontally by finely adjusting the balancer 34. Furthermore, the controllers 4 are moved forward to restrict the swinging of the vertical arm 5 suspended from the support shaft 3.

Next, in FIGS. 1, 2, and 6, the displacement transducer 27
Detector 29 of the displacement converter by rotating the adjuster 30 of
Eliminate the play in the linear direction between the horizontal arm and the engagement recess 24 at the other end of the horizontal arm, loosen the tightening bolt 19, bring the scratching needle 22 at the bottom of the probe into contact with the test piece 60, and move the horizontal arm 9. After making it horizontal, tighten the tightening bolt 19 to fix the horizontal arm 9 and the probe 20.

In Figures 1, 2, and 7, the saucer 21 on the top of the probe
A weight 55 is placed on the scratching needle 22 to apply a predetermined vertical load to the scratching needle 22.
In addition, in that state, the motor 39 provided inside the main body 1
By driving the moving platform 36 at a constant speed in the direction of arrow A in FIG. Test piece 60
The scratch strength (the beginning of scratching) can be expressed by the vertical load g. Furthermore, since the scratch resistance force can be measured and recorded at the same time, it is very effective in understanding the scratch characteristics of the test piece 60.

The resistance force received by the horizontal arm 9 via the probe 20 applies a linear force to the displacement transducer 27 via the vertical arm 5 whose upper end is supported by the support shaft 3. In this case, since the amount of movement of the detector 29 of the displacement transducer 27 is as small as 40 Å at maximum, the movement of the horizontal arm 9 becomes a substantially linear motion, transmitting an accurate force to the displacement transducer 27, and detecting the The resistance force is amplified by a known dynamic strain measuring device 43 built into the main body 1, and is expressed as resistance force g on a recorder.

At low loads, the scratching needle 22 is applied over the test piece 60.
Frictional resistance can also be measured by sliding. In this region, the vertical load and the frictional resistance force are in a proportional relationship according to Coulomb's law. However, when scratches occur on the surface of the test piece 60, the above relationship collapses, and the resistance increases extremely. The vertical load at this time can be taken as the scratch strength. Scratching needle 22
Since it is possible to measure minute changes in resistance force, it can be applied to the measurement of extremely thin film surfaces, and measurement values for both scratch strength and peel strength can be obtained without observing the test piece 60.

To explain the case of measuring peel resistance with reference to FIGS. 1, 2, and 8, one end of one test piece 64 of the test pieces 64 bonded to each other is placed on the moving table 36 and fixed with the holder 37, and the other test piece is One end of the piece 63 is held between the clip-shaped second attachment 47 attached to the lower part of the measuring head 20, the left and right sides of the central fulcrum 8 of the horizontal arm 9 are balanced, the height of the measuring head 20 is adjusted, and the movable stage is moved. 36 to the left side in FIG. In this state, the test piece 6 is moved by driving the motor 39 to move the moving table 36 at a constant speed in the direction of the arrow.
Peeling of specimens 3 and 64 started, and both specimens 63 and 64
A wide range of resistance forces such as the peel strength between adhesive bonding layers, the adhesion of adhesives, and the blocking strength of stacked test pieces can be measured through the measuring element 20, the horizontal arm 9, the engaging recess 24, and the detector 29. It is detected by the displacement converter 27, amplified by the dynamic strain measuring device 43, and recorded in a recording device (not shown).

Next, when measuring the frictional resistance, the test pieces or the test piece 62 and the standard piece 61 are rubbed against each other. The shapes can be flat and flat, flat and corrugated, flat and cylindrical, flat and spherical, etc., but in this example, as an example, the frictional resistance is measured between flat surfaces. , 9 will be explained.

The first attachment 45, which has a test piece or standard piece 61 attached to its lower surface, is attached to the scratching needle 22 of the probe 20.
The holder 37 holds one end of the test piece 62 placed on the moving table 36, which has been removably attached to and moved to the left side in FIG. While keeping the measuring head 20
Then, by placing a weight 55 on the tray 21 and applying a predetermined vertical load to the attachment 45 attached to the lower part of the measuring head 20, and in this state, by driving the motor 39, the moving stage 36 is moved to the first position. 9
Move at a constant speed in the direction of the arrow in the figure. At this time, the static/dynamic frictional resistance force generated in the detector 29 via the engagement recess 24 of the horizontal arm 9 is detected by the displacement converter 27, and amplified by the dynamic strain measuring device 43, and the recording device (not shown).

When measuring various resistance forces, by adjusting the first balancer 31 and the second balancer 34, the measuring element 20 attached to the tip of the horizontal arm can be adjusted.
The vertical force applied to the probe 20 can be reduced to zero by balancing the left and right sides of the horizontal arm 9 with various attachments attached to the lower part of the transverse arm 9, making it possible to perform test measurements with small changes in the vertical load. By sequentially changing the weight of the weight placed on the tray 21 of the measuring head 20, the vertical load can be changed stepwise, and the vertical load at the scratch strength of the test piece can be expressed in g.

The present invention has the following effects.

The vertical force of the gauge head can be reduced to zero by easily adjusting the left and right balance of the horizontal arm with the gauge head attached to the center fulcrum using a balancer, and the vertical force can be reduced by placing the weight on the receiver of the gauge head. In this way, it is possible to perform tests that vary the vertical load.

The balancer has a dual structure, allowing for general adjustment and fine adjustment, and the left and right balance of the horizontal arm can be easily adjusted.

Since the probe can be moved up and down, the probe can be easily adjusted even if the thickness of the test piece is different or various attachments are changed, and the resistance force applied to the scratching needle can be measured using a displacement transducer. Therefore, there is no error in the measured value and it is accurate.

The vertical load can be changed by placing a weight on the tray provided at the top of the gauge head, and the structure allows various attachments to be removably attached to the bottom of the gauge head, making it convenient to handle and making measurement work more efficient. It can be carried out.

Since the lever piece attached to the mounting piece can be latched by lifting the end of the horizontal arm, it is easy to replace various attachments and it is also easy to attach the test piece to the moving table.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall front view, FIG. 2 is an enlarged front view showing the relationship between the vertical arm and the horizontal arm, and a partially cutaway view of the main part;
Figure 3 is an enlarged front view of the main parts showing the relationship between the mounting piece and the lever piece, Figure 4 is a sectional view taken along the line C--C of Figure 2, and Figure 5 is a partially cutaway view of Figure 2D. - A cross-sectional view along the line D, FIG. 6 is a partially omitted plan view showing the state of engagement between the displacement transducer and the horizontal arm, FIG. 7 is a cross-sectional view along the line E-E in FIG. 1, and FIG. FIG. 9 is an enlarged front view of the main part showing the peel test, and FIG. 9 is an enlarged front view of the main part showing the friction test. DESCRIPTION OF SYMBOLS 1...Main body, 2...Support part, 5...Vertical arm, 7...Mounting piece, 9...Horizontal arm, 15...Leverage piece, 18...Boss part, 19...Tightening bolt, 20...Measuring head, 21...
saucer, 22...scratching needle, 24...engaging recess, 27...displacement converter, 31, 34...balancer, 36...movement table, 39...motor.

Claims (1)

[Claims] 1. The upper end of the vertical arm is pivotally supported on a support part provided on the main body, and a mounting piece is fixed to the lower end of the vertical arm, which pivotally supports approximately the middle part of the horizontal arm, A lever piece that lifts and hooks the tip of the horizontal arm is rotatably attached to the mounting piece, and a scratching needle to which various attachments for measurement are detachably attached is attached to the boss attached to the tip of the horizontal arm. At the bottom, a measuring head with a saucer on the upper part is attached so as to be movable up and down, and a tightening bolt for fixing the measuring head is attached to the boss part. A balancer for adjusting the balancer is mounted so as to be movable, and an engagement recess provided at the other end of the horizontal arm is engaged in a linear direction with a detector connected to a known displacement transducer mounted on the main body so as to be movable forward and backward. A known movable table is mounted on the main body located below the measuring element so as to be movable forward and backward relative to the measuring element by a motor built in the main body, and the resistance value detected by the displacement transducer is measured. A surface measuring device with a dynamic strain measuring device installed in the main body.