CN108955514A - A kind of surface roughness on-line measurement device - Google Patents
A kind of surface roughness on-line measurement device Download PDFInfo
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- CN108955514A CN108955514A CN201810817297.9A CN201810817297A CN108955514A CN 108955514 A CN108955514 A CN 108955514A CN 201810817297 A CN201810817297 A CN 201810817297A CN 108955514 A CN108955514 A CN 108955514A
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- measurement
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- axis
- measurement device
- end cap
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
Abstract
The invention belongs to surface finish measurement technical fields, more particularly to a kind of surface roughness on-line measurement device, including measurement device and rotating device, the measurement device setting is on the spinning device, and with surface contact connection to be detected, measurement device can be driven to rotate by rotating device, the rotating device be equipped with slip ring, the measurement device includes measurement piece one and measurement piece two, measures piece one and measurement piece two is electrically connected with slip ring respectively.The present invention can be achieved to measure its roughness in real time online in workpiece process, avoid the disassembly of workpiece, have many advantages, such as that easy to operate, assembly is simple, replacement is convenient, measurement accuracy is high, long service life.
Description
Technical field
The invention belongs to surface finish measurement technical fields, and in particular to a kind of surface roughness on-line measurement device.
Background technique
Surface roughness is to measure a key factor of workpiece surface quality, it is to describe surface microscopic in machining
The most common parameter of pattern reflects the microcosmos geometric shape error on mechanical workpieces surface.It mainly in process, due to
The plastic deformation when tool marks that leave after cutter cutting, chip separation, there are high-frequency vibration and cutters and part in process system
The reasons such as the friction between surface are formed by.Surface roughness and the fiting property of part, fatigue strength, contact wearability
Rigidity, vibration and noise etc. have substantial connection, and the service life and reliability to mechanical workpieces have important influence.Therefore,
Surface roughness can be accurately measured to play a significant role the evaluation of machined mechanical workpieces quality.
The method of detection surface roughness common at present has: comparison method, light cross-section method, impression method, tracer method etc..But it is existing
Method have respective shortcoming: comparison method is not accurate enough；Impression method will cooperate other mensurations that can just work, measurement
Precision is not high and measurement process is cumbersome；It is bent for detection although tracer method is more quick and convenient when measuring flat work pieces
Face is then severely limited, and probe is difficult precisely to detect along cylindrical radial.
In addition, as number of patent application be a kind of roughness contourgraph of 200420082240.2(), 201110300237.8(inspection
Survey wafer surface roughness method), a kind of device of accurate Parts Measurement surface roughness of 201420362613.5(),
201410179287.9(the device for fast detecting and its detection method of thin cylindrical workpiece surface roughness) and
201611171527.6(roughness measuring device and method) Chinese patent document involved by measurement method be both needed to take workpiece
It is measured after lower, not only influences production efficiency, but also processing can be caused not smart enough because the position of secondary installing changes
Really, production cost is also increased.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of surface roughness on-line measurement device, which can be online
Real-time detection goes out the roughness of workpiece surface, avoids the processes such as disassembly, the secondary installing of workpiece, easy to operate.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of surface roughness on-line measurement device, including measurement device and rotating device, the measurement device setting are rotating
On device, and measurement device can be driven to rotate by rotating device, the rotating device with surface contact connection to be detected
It is equipped with slip ring, the measurement device includes measuring piece one and measurement piece two, measures piece one and measurement piece two is electric with slip ring respectively
Connection.
The rotating device includes connector and rotatable rotary shaft is arranged on connector, and the rotary shaft includes the
One axis and the second axis, the first axle and the second axis are oppositely arranged, and first axle and the second axis contact connection, can by first axle
The second axis is driven to rotate, the measurement device is arranged on the second axis.
The first axle end is conehead, and the second shaft end portion is equipped with the taper hole of conehead cooperation, and the conehead is located at taper hole
It is interior, the outer surface of conehead and the inner surface contact connection of taper hole.
The connector includes end cap one and end cap three, and the end cap one couples with end cap three, the first axle and end cap
One rotation connection, second axis couple with the rotation of end cap three.
The end cap one and three bolt-connection of end cap.
The first axle and the second axis and connector connection place are respectively equipped with bearing.
The measurement piece one and the measurement interlaced arrangement on the circumferencial direction of rotating device of piece two.
Compared with prior art, the present invention having the beneficial effect that
The present invention carries out the on-line measurement of workpiece surface roughness using thermocouple principle, with two different conductors or semiconductor
A closed circuit is formed, two different conductors or semiconductor are applied with certain power, contacts it with workpiece surface, is contacted
When friction generates heat that the temperature of contact point will be made to increase, at this moment contact point with not in contact with point there are temperature gradient, in circuit
It just has electric current to pass through, both ends will generate electromotive force, then access measuring instrumentss in the loop, acquire the value of electromotive force.Pass through
Collected electromotive force numerical value obtains the temperature difference at conductor both ends, and then obtains the value of corresponding workpiece surface roughness.
The present invention can be achieved to measure its roughness in real time online in workpiece process, avoids the disassembly of workpiece, has
Have the advantages that easy to operate, assembly is simple, replacement is convenient, measurement accuracy is high, long service life.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the coupling structure schematic diagram of first axle of the present invention；
Fig. 3 is the coupling structure schematic diagram of the second axis of the invention；
Fig. 4 is the structural schematic diagram of measurement device of the present invention；
Fig. 5 is use state diagram of the invention；
Fig. 6 is the schematic diagram of thermocouple；
Wherein: 1 is motor, and 2 be end cap one, and 3 be bolt, and 4 be small locking nut, and 5 be bearing block, and 6 be bearing, and 7 be end cap two,
8 be first axle, and 9 be big locking nut, and 10 be insulation spacer, and 11 be measurement piece one, and 12 be the second axis, and 13 be end cap three, and 14 are
Conducting wire, 15 be slip ring, and 16 be measurement piece two, and 17 be stay bolt, and 18 be nut, and 19 be workpiece, and 20 be on-line measurement device, and 21 are
Signal amplifier, 22 be computer.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of surface roughness on-line measurement device realizes the online survey of axis class surface roughness using thermocouple principle
Amount, schematic diagram is as shown in fig. 6, when there are two types of the homogeneous conductors of heterogeneity or the both ends semiconductor A and B to be connected with each other composition one
A closed circuit, as long as temperature at two node of closed circuit is different, it is logical that both ends there are temperature gradient, in circuit just have electric current
It crosses, there is electromotive force between two-end-point at this time, the temperature of the material and two contacts of the direction of the electromotive force and size and conductor
It is related.
This phenomenon is known as " pyroelectric effect ", and the circuit of two kinds of conductors composition is known as " thermocouple ", both conductors are known as
" thermode ", the electromotive force of generation are then known as " thermo-electromotive force ".In general, the higher one end of temperature is known as working end or hot end (vacation
If temperature is T), the lower other end of temperature is known as free end (also referred to as reference end) or cold end (assuming that temperature is T0), free end
It is generally under some stationary temperature.
After the material of thermode determines, the size of thermo-electromotive force in Thermocouple Circuit, only with two node of closed circuit
Temperature is related, unrelated with the length of thermocouple, cross-sectional sizes.Temperature is higher at two nodes, and the electronics in conductor is more active, by
The big conductor of electron density or semiconductor A are diffused into the small conductor of electron density or the electronics of semiconductor B is more, cause to contact
Electric field strength caused by face is higher, thus contact potential is also bigger.
When accessing the third metal material in Thermocouple Circuit, as long as the temperature of two nodes of material is identical, circuit
Thermo-electromotive force caused by middle thermocouple will remain unchanged, i.e., do not influenced by the third metal access circuit.Therefore, in heat
It when galvanic couple thermometric, can access measuring instrumentss, measure the temperature that may know that measured medium after electromotive force.To which we can obtain
To the size of conductor temperature difference between the two ends corresponding to different electromotive force numerical value.
The present invention carries out the on-line measurement of 19 surface roughness of workpiece using thermocouple principle, and specific implementation is as follows:
With two different conductors or semiconductor group at a closed circuit, two different conductors or semiconductor are applied centainly
Power contacts it with 19 surface of workpiece, and friction generates heat when contact will be such that the temperature of contact point increases, at this moment contact point with
Not in contact with point there are temperature gradient, electric current just being had in circuit and is passed through, both ends will generate electromotive force, then access is surveyed in the loop
Instrument is measured, the value of electromotive force is acquired.
Because 19 surface roughness of workpiece is different, the heat for the generation that rubs is just different, and the temperature difference at conductor both ends is just different.?
It is exactly that surface roughness and conductor temperature difference between the two ends can establish certain relationship.
In this manner it is possible to obtain the temperature difference at conductor both ends by collected electromotive force numerical value, and then obtain corresponding
The value of 19 surface roughness of workpiece.
According to the above method, can be realized using following device:
As shown in Figure 1, a kind of surface roughness on-line measurement device, including measurement device and rotating device, measurement device setting
On the spinning device, and with surface contact connection to be detected, measurement device can be driven to rotate by rotating device, rotating device
It is equipped with slip ring 15, measurement device includes measurement piece 1 and measurement piece 2 16, and measurement piece 1 and measurement piece 2 16 are materials
Two kinds of different metals, measure piece 1 and measurement piece 2 16 is electrically connected by conducting wire 14 with slip ring 15 respectively, and are formed into a loop.
When detection, measurement piece 1 and measurement piece 2 16 is driven to rotate by rotating device, two kinds of different metals of material
Measurement piece 1 and measurement piece 2 16, which generate friction with surface to be measured (workpiece 19) simultaneously, causes the temperature at contact point to increase.Again
Because metal assay piece 1 and measurement piece 2 16 are connect by conducting wire 14 with slip ring 15 respectively, to generate in the loop electronic
Gesture.After obtained electromotive force is by the signal amplifier 21 in circuit, the surface of workpiece 19 is obtained by 22 acquisition process of computer
Roughness.
The main function of rotating device is the rotation realized measurement piece 1 and measure piece 2 16.Therefore, rotating device can
To be realized using various structures:
Rotating device includes that connector and setting rotatable rotary shaft, rotary shaft on connector include first axle 8 and second
Axis 12, first axle 8 and the second axis 12 are oppositely arranged, the axis of first axle 8 and the second axis 12 point-blank, and first axle 8
With 12 contact connection of the second axis, when first axle 8 rotates, the rotation of the second axis 12 is driven by frictional force, measurement device setting is the
On two axis 12.First axle 8 can realize rotation by connection motor 1.First axle 8 is driving shaft, and the second axis 12 is driven axle.
Connector primarily serves connection and supporting role, therefore the specific structure of connector can carry out according to the actual situation
Adjustment and design, such as: connector includes end cap 1 and end cap 3 13, there is interval, end cap between end cap 1 and end cap 3 13
1 and end cap 3 13 can be coupled by stay bolt 17.
First axle 8 and the second axis 12 and connector connection place are respectively equipped with bearing 6 and bearing block 5, and pass through small lock respectively
Tight nut 4 is fixed, and first axle 8 and the second axis 12 are coupled by end cap 27 with end cap 1 and end cap 3 13 respectively, specifically
It is as follows:
As shown in Fig. 2, motor 1 is mounted on end cap 1 by bolt 3, the rotary shaft of motor 1 couples with first axle 8；End cap one
2 are mounted on bearing block 5；Bearing 6 is installed in first axle 8, bearing 6 is locked in first axle 8 by small locking nut 4；
The outer ring of bearing 6 is mounted in the hole of bearing block 5, and the end cap 1 by being mounted on 5 both ends of bearing block and end cap 27 are by axis
6 are held to be axially fixed in bearing block 5.
As shown in figure 3, the second axis 12 couples with the specific of connector are as follows: be equipped with bearing 6 on the second axis 12, pass through small lock
Bearing 6 is locked on the second axis 12 by tight nut 4；The outer ring of bearing 6 is mounted in the hole of bearing block 5, and by being mounted on axis
Bearing 6 is axially fixed in bearing block 5 by the end cap 27 and end cap 3 13 for holding 5 both ends of seat；One end of second axis 12 is provided with peace
Fill insulation spacer 10 and measure piece 1 and measure the boss of piece 2 16, be provided on boss connect with big locking nut 9 outside
Screw thread.
One end of first axle 8 is provided with the boss (conehead) of certain taper, and the center of one end of boss is arranged in the second axis 12
It is provided with cone blind hole (taper hole) identical with 8 boss taper of first axle；When installation, the boss of first axle 8 is inserted into the second axis 12
Cone blind hole in, end cap 1 and end cap 3 13 are secured together by stay bolt 17 and nut 18, end cap 1 and end cap three
13 are equipped with corresponding through-hole.
Measurement piece 1 and the particular number for measuring piece 2 16 can be adjusted according to the actual situation and set.Measure piece
One 11 and measurement interlaced arrangement (such as Fig. 4) in a circumferential direction of piece 2 16, interlaced arrangement refer to according to measuring piece 1, measure piece
2 16, piece 1, measurement piece 2 16 ... sequence arranged are measured, cloth, which postpones, can form cyclic structure.
The installation of measurement device and the second axis 12:, will after first by 10 sets of a piece of insulation spacer on the boss of the second axis 12
2 16 sets of piece of piece 1 and measurement are measured on the boss of the second axis 12, then again by another 10 sets of insulation spacer in the second axis
On 12 boss, insulation spacer 10 and measurement piece 1 finally will be installed with big locking nut 9 and measurement piece 2 16 is locked to the
On two axis 12.Be provided with the hole passed through for conducting wire 14 on second axis 12, so as to conducting wire 14 will measure piece 1, measurement piece 2 16 with
15 connection of slip ring of second axis, 12 other end is set.
As shown in figure 5, surface roughness on-line measurement device 20(provided by the invention is measured piece when specifically used
16) one 11 apply certain active force close to workpiece 19 with measurement piece 2；When detection, first axle 8 is driven to rotate by motor 1,
Between the cone blind hole of the boss of first axle 8 and the second axis 12 under the action of frictional force, the second axis 12 and measurement piece 1 are driven
It is rotated together with measurement piece 2 16.At this point, two kinds of metal assay pieces 1 and measurement piece 2 16 and the production of workpiece 19 that material is different
Raw friction causes the temperature at contact point to increase.Again because metal assay piece 1 and measurement piece 2 16 by conducting wire 14 and are slided respectively
Ring 15 connects, to generate electromotive force in the loop.Obtained electromotive force is counted after through the signal amplifier 21 in circuit
The surface roughness of workpiece 19 is obtained after 22 acquisition process of calculation machine.
Foregoing circuit structure is that those skilled in the art are known, and can be adjusted according to the actual situation.The device can be with
It is fixed at workpiece by the setting modes such as mounting rack, mounting rack mainly plays anastomosis, i.e. the specific structure of mounting rack can be with
It designs, therefore does not elaborate herein according to the actual situation.Physical relationship between surface roughness and conductor temperature difference between the two ends is can
To be obtained according to limited trials.
Only presently preferred embodiments of the present invention is explained in detail above, but the present invention is not limited to above-described embodiment,
Within the knowledge of a person skilled in the art, it can also make without departing from the purpose of the present invention each
Kind variation, various change should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of surface roughness on-line measurement device, it is characterised in that: including measurement device and rotating device, the measurement dress
It installs on the spinning device, and measurement device can be driven to rotate by rotating device with surface contact connection to be detected,
The rotating device is equipped with slip ring (15), and the measurement device includes measurement piece one (11) and measurement piece two (16), measures piece
One (11) and measurement piece two (16) are electrically connected with slip ring (15) respectively.
2. a kind of surface roughness on-line measurement device according to claim 1, it is characterised in that: the rotating device packet
Including connector and rotatable rotary shaft, the rotary shaft is arranged on connector includes first axle (8) and the second axis (12), institute
It states first axle (8) and the second axis (12) is oppositely arranged, and first axle (8) and the second axis (12) contact connection, pass through first axle (8)
The second axis (12) can be driven to rotate, the measurement device is arranged on the second axis (12).
3. a kind of surface roughness on-line measurement device according to claim 2, it is characterised in that: the first axle (8)
End is conehead, and the second axis (12) end is equipped with the taper hole of conehead cooperation, and the conehead is located in taper hole, the outer surface of conehead
With the inner surface contact connection of taper hole.
4. a kind of surface roughness on-line measurement device according to claim 2, it is characterised in that: the connector includes
End cap one (2) and end cap three (13), the end cap one (2) couple with end cap three (13), the first axle (8) and end cap one (2)
Rotation connection, second axis (12) couple with end cap three (13) rotation.
5. a kind of surface roughness on-line measurement device according to claim 4, it is characterised in that: the end cap one (2)
With end cap three (13) bolt-connection.
6. a kind of surface roughness on-line measurement device according to claim 3, it is characterised in that: the first axle (8)
Bearing (6) are respectively equipped with the second axis (12) and connector connection place.
7. a kind of surface roughness on-line measurement device according to claim 1, it is characterised in that: the measurement piece one
(11) and measurement piece two (16) interlaced arrangement on the circumferencial direction of rotating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817297.9A CN108955514A (en) | 2018-07-24 | 2018-07-24 | A kind of surface roughness on-line measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817297.9A CN108955514A (en) | 2018-07-24 | 2018-07-24 | A kind of surface roughness on-line measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108955514A true CN108955514A (en) | 2018-12-07 |
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ID=64464497
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810817297.9A Pending CN108955514A (en) | 2018-07-24 | 2018-07-24 | A kind of surface roughness on-line measurement device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08105801A (en) * | 1994-08-12 | 1996-04-23 | Nikon Corp | Cantilever with microscopic thermocouple and scanning temperature distribution measuring apparatus |
| TW200617353A (en) * | 2004-09-10 | 2006-06-01 | Univ Okayama | Method for detecting surface state of work and device for detecting surface state |
-
2018
- 2018-07-24 CN CN201810817297.9A patent/CN108955514A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08105801A (en) * | 1994-08-12 | 1996-04-23 | Nikon Corp | Cantilever with microscopic thermocouple and scanning temperature distribution measuring apparatus |
| TW200617353A (en) * | 2004-09-10 | 2006-06-01 | Univ Okayama | Method for detecting surface state of work and device for detecting surface state |
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