JP2004268164A - Lapping device and lapping method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lapping device for providing desired surface roughness in response to an abrasive grain state of a lapping film surface. <P>SOLUTION: This lapping device has a rotational driving means 20 for rotatably holding a work W, a lapping film 1 for arranging an abrasive grain on one surface of a nonexpansible and deformable thin base material, a shoe 2 for pressing an abrasive grain surface of the lapping film 1 to the work W rotated by the rotational driving means 20, a motor M<SB>3</SB>for sending out the lapping film when stopping lapping, a roughness measuring apparatus 4 and a roughness measuring apparatus body 40 for detecting a surface state of the lapping film 1, and a control part C for controlling at least one of pressing force of the shoe 2 in working and sending-out quantity of the lapping film 1 when stopping the lapping. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lapping apparatus and a lapping method using a lapping film.
[0002]
[Prior art]
In recent years, due to demands for higher precision and higher efficiency of various mechanical parts, the necessity of processing precision is increasing. Super finishing with a wrapping film has attracted attention as a means of improving the precision of processing.
[0003]
Super finishing using a film is a non-stretchable and deformable thin base material with abrasive grains provided on one side of the surface. This is a process to perform fine cutting by giving an oscillation (vibration).
[0004]
The wrapping film is formed in a roll tape shape, and can be sent out from a supply reel to a take-up reel. The wrapping film is fixed so as not to be sent out during processing of the workpiece, and after one processing is finished, is sent out by a predetermined amount, and a different surface is used for the next processing (for example, see Patent Document 1).
[0005]
As described above, the wrapping film is sequentially sent out and used according to the processing, and the same surface is usually used for processing a plurality of times. The abrasive grains are worn and become smaller or peel off on the surface of the wrapping film due to multiple uses.
[0006]
However, in the conventional lapping apparatus, the processing is continued under a constant condition, for example, with a constant pressing force for pressing the shoe against the work regardless of the state of the abrasive grains on the surface of the lapping film.
[0007]
In this case, the processing becomes uneven due to the uneven wrapping film surface, and a desired surface roughness cannot be obtained. If the amount of the abrasive grains projecting from the surface of the lapping film is not uniform, the work may be scratched, the precision may be reduced, and it may be necessary to perform the processing again.
[0008]
[Patent Document 1]
JP-A-7-237116 (see FIGS. 1 and 2)
[0009]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lapping apparatus and a method thereof capable of obtaining a desired surface roughness in accordance with the state of abrasive grains on a lapping film surface.
[0010]
[Means for Solving the Problems]
The lapping apparatus of the present invention is a holding means for rotatably holding a work, a wrapping film having abrasive grains provided on one surface of a thin base material, and a wrapping film on the work being rotated by the holding means. A pressing member that presses the abrasive grain surface, a film feeding unit that sends out the wrapping film while processing is stopped, a detecting unit that detects a surface state of the wrapping film, and, based on a detection result, the pressing member that is being processed. And control means for controlling at least one of the pressing force and the feeding amount of the wrapping film during processing stop.
[0011]
The lapping method of the present invention, a lapping film provided with abrasive grains on one surface of a thin base material is pressed against the work by a pressing member from the abrasive grain surface, and at the same time imparting rotation to the work, relative to the work Applying a vibration to the wrapping film to process the surface of the work, wherein the step of detecting the surface state of the wrapping film, and pressing the pressing member during processing based on the detection result Controlling at least one of the force and the feeding amount of the wrapping film during the processing stop.
[0012]
【The invention's effect】
In the lapping apparatus and the lapping method of the present invention, based on the detection result of the surface state of the lapping film, at least one of the pressing force of the pressing member during the processing and the feeding amount of the wrapping film during the processing is controlled. Therefore, a stable and uniform lapping process can be performed according to the surface condition of the wrapping film.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
(First Embodiment)
First, a schematic configuration of a lapping apparatus to which the present invention is applied will be described, and thereafter, a characteristic portion of the present invention will be described.
[0015]
FIG. 1 is a schematic configuration diagram showing a lapping apparatus according to an embodiment of the present invention, FIG. 2 is a schematic sectional view showing a closed state of a shoe pressing means, and FIG. 3 is a schematic sectional view showing an open state of a shoe pressing means. . For convenience of explanation, the axial direction of the work (the left-right direction in FIG. 1) is defined as the X direction, and the horizontal direction orthogonal to the X direction (the direction orthogonal to the plane of FIG. 1) is defined as the Y direction. A vertical direction (vertical direction in FIG. 1) orthogonal to the X direction is defined as a Z direction.
[0016]
1 and 2, when the lapping apparatus of the present embodiment is briefly described, a wrapping film 1 in which abrasive grains are provided on one surface of a non-stretchable and deformable thin base material (see FIG. 2), and a wrapping film Shoe 2 (see FIG. 2) disposed on the rear side of the workpiece 1 and shoe pressing means for pressing the shoe 2 (pressing member) toward the processing surface of the work W to press the abrasive surface of the wrapping film 1 against the work W 10, a rotation driving means 20 (holding means) for holding and rotating the work W, and an oscillation means 30 for generating an oscillation between the work W and the wrapping film 1. When the lapping film 1 is pressed against the lapping film, the operation of the shoe pressing means 10, the rotation driving means 20, the oscillation means 30 or the like is performed. State appropriately detects, it is controlled by the control unit C. The work W of the present embodiment has a work surface having an arc-shaped cross section, for example, a work surface having a perfectly circular cross section such as a journal portion or a pin portion of a crankshaft.
[0017]
The details will be described below.
[0018]
First, there are various types of wrapping films 1. In the present embodiment, the base material is made of a material having high non-stretchability, for example, a polyester having a plate thickness of about 25 μm to 130 μm. A large number of abrasive grains (specifically, made of aluminum oxide, silicon carbide, diamond, or the like) having a particle size of about several μm to 200 μm are attached to the substrate with an adhesive (see FIG. 5). The abrasive grains may be adhered to one surface of the base material over the entire surface, or a non-abrasive grain region having a predetermined width may be formed intermittently. A resistance material (not shown) made of rubber, synthetic resin, or the like is attached to the other surface of the base material.
[0019]
The wrapping film 1, as shown in FIG. 2, by the rotation of the take-up reel 6 driven by a motor M ₃ (film feeding means) is drawn from a supply reel 5 supported to the frame body or the like of the lapping device Is guided by film rollers R ₁ , R ₅ , R _{2 and the} like provided at the distal ends of pressing arms 11, 12 described later, and is wound on the take-up reel 6. Is provided with a lock device, and the lock device is held in a state where a predetermined tension is applied to the whole by the operation of the lock device.
[0020]
The shoe 2 is made of rubber, synthetic resin, or the like, and has relatively rigidity. As shown in FIGS. 2 and 4, the inner surface has an arc surface along the processing surface of the work W. However, the outer peripheral side is held by shoe cases 3a, 3b and held by pressing arms 11, 12.
[0021]
The shoe pressing means 10 is provided with pressing arms 11 and 12 each of which has a shoe 2 provided at a front end thereof, and provided at the rear end of each of the pressing arms 11 and 12. And a pressing force adjusting means 15 for adjusting the pressing force of the shoe.
[0022]
When the fluid pressure cylinder 13 operates, the shoe pressing means 10 brings the two pressing arms 11 and 12 around the support pin 14 into a closed state shown in FIG. 2 and an open state shown in FIG. The rotation of both pressing arms 11 and 12 is performed together with the wrapping film 1, and the shoe 2 presses the work W through the wrapping film 1 by the closing rotation, and the work W and the shoe 2 are brought into contact by the opening rotation. To release.
[0023]
The pressing force adjusting means 15 adjusts the spring force for pressing the shoe cases 3a and 3b by the cam 16, and adjusts the pressing force of the shoe 2 against the work surface of the workpiece W. The pressing force adjusting means 15 is also connected to the control section C, so that it can be controlled.
[0024]
In FIG. 1, the rotation drive unit 20 includes a head stock 22 that rotatably supports a main shaft 21, a chuck 23 that is connected to a tip of the main shaft 21 and grips one end of a work W, and is connected to the main shaft 21 via a belt 24. a spindle motor M ₁ which is, and a tailstock 25 provided with a center that supports the other end of the workpiece W.
[0025]
Workpiece W is set between the headstock 22 and tailstock 25, the rotation of the spindle motor M ₁ is transmitted through the belt 24, the spindle 21 and the chuck 23, but will rotate, these headstock 22 The tail stock 25 is provided on a table 26 slidable along the Y direction. The table 26 is disposed on a table 27 slidable along the X direction.
[0026]
Oscillation means 30, the eccentric rotor 33 abutting on an end portion of the table 27, and the motor M ₂ for oscillation for rotationally driving the eccentric rotor 33, always in the eccentric rotor 33 to the end of the table 27 and resilient means 34 such as a spring for causing the contact has an eccentric rotor 33 is rotated to reciprocate the table 27 in the X direction by the motor M _2, intended to oscillation of the entire workpiece W in the X direction is there.
[0027]
The amplitude of oscillation due to oscillation means 30 is defined by the eccentricity of the eccentric rotor 33 relative to the axis of the motor M _2, the rate of oscillation is controlled by the rotational speed of the motor M _2. The rotational position of the eccentric rotator 33 is detected by a rotary encoder 35. Incidentally, adjustment of eccentricity is means such as inserting a regulatory plate mating portion of the shaft to the motor M ₂ and the eccentric rotation body 33 is used, it may be utilized such as a fluid pressure means, various There are means of.
[0028]
In the above, the overall configuration of the lapping apparatus has been described. In the present embodiment, in particular, the state of the abrasive grain surface of the lapping film 1, that is, the surface roughness is detected, and based on the detection result, the shoe 2 is used. , And at least one of the pressing force and the feeding amount of the wrapping film 1 is controlled.
[0029]
Therefore, it has the roughness measuring device 4 and the roughness measuring device main body 40 as detecting means for detecting the surface roughness. As shown in FIG. 2, the roughness measuring device 4 is arranged at a position where the abrasive surface of the unused wrapping film 1 can be detected. The roughness measuring device 4 is connected to the roughness measuring device main body 40, and the roughness measuring device main body 40 is connected to the control section C. The control unit C is connected to the motor M ₃ for feeding the wrapping film 1 and the pressing force adjusting means 15 for controlling the pressing force for pressing the shoe 2 against the work W based on the measurement result of the roughness. These are controlled based on the detection result of the roughness measuring device 4.
[0030]
As the roughness measuring device 4, for example, an ultra-depth shape measuring microscope (VK-8500: Keyence), a non-contact three-dimensional surface shape / roughness measuring device (New View 5000: Zygo Co., Ltd.) and the like are generally sold. Roughness measuring instruments can be used.
[0031]
Further, in the present embodiment, a truing means 7 is further provided in order to polish the abrasive grains on the wrapping film 1 in advance to make a predetermined protrusion height uniform. The truing means 7 includes a truing body 70 and a truing portion 71. The truer main body 70 is connected to the control unit C and is controlled by the control unit C to drive the truing unit 71. The truing portion 71 is formed in a rotatable cylindrical shape, and has diamond abrasive grains fixed to a side surface. By rubbing the wrapping film 1 on the side while rotating, the wrapping film 1 can be trued.
[0032]
Hereinafter, the main part of the present invention will be described in detail.
[0033]
FIG. 4 is a view showing a state of truing of abrasive grains, and FIG. 5 is an enlarged view showing an abrasive grain surface.
[0034]
The roughness measuring device 4 detects the protrusion height L of the abrasive grains on the abrasive grain surface of the wrapping film 1. As shown in FIG. 5, the abrasive grains are arranged on one surface of a non-stretchable and deformable thin base material, and are fixed by an adhesive. Here, the protruding height L of the abrasive grains measured by the roughness measuring device 4 is the height of the abrasive grains protruding from the adhesive.
[0035]
The control unit C first controls the truing means 7 to make the height of the abrasive grains on the abrasive grain surface of the wrapping film 1 uniform. Specifically, as shown in FIG. 4, based on the control of the control unit C, the truer main body 70 rotationally drives a rotatable cylindrical truing part 71 for performing truing (polishing). The abrasive grains on the wrapping film 1 projecting more than a predetermined protrusion height are scraped to the predetermined height by applying the diamond abrasive grains fixed to the side surface to the lapping film 1, and the abrasive of the wrapping film 1 before the lapping process is removed. Make the protrusion height of the grains uniform.
[0036]
The roughness measuring device 4 captures an image of the surface of the wrapping film 1 after truing, and transmits the captured result to the roughness measuring device main body 40. The roughness measuring device main body 40 analyzes the photographed image and calculates the protrusion height L of the abrasive grains. The calculated protrusion height L is transmitted from the roughness measuring device main body 40 to the control unit C. The control unit C determines the clogging state based on the protrusion height L, and determines the cutting force.
[0037]
The controller C stores the location of the wrapping film 1 and the result of the determination, and based on the determination result of the location where the wrapping film 1 is sent out and is used for processing by pressing the shoe 2 from now on. The pressing force of the shoe 2 is controlled by the pressing force adjusting means 15 so that a desired processing amount can be obtained, or when the cutting force at the location is extremely low, the wrapping film 1 is further fed to process the location. To be used for
[0038]
Normally, the surface of the wrapping film 1 after truing is in a uniform state, and the cutting force is uniform. Therefore, when there is no problem in processing, the control unit C determines the pressing force by the shoe 2 and the wrapping film 1. The feed amount is not adjusted, and each component is controlled so as to have a constant pressing force and feed amount.
[0039]
As described above, in the first embodiment, since the unused wrapping film 1 is trued, a uniform processing amount can be obtained when used for processing. In addition, since the surface of the wrapping film 1 after truing is measured by the roughness measuring device 4, it is possible to perform appropriate cutting corresponding to the amount of truing, or to prohibit use of a portion that is not suitable for truing. A stable processing amount can be obtained.
[0040]
(Second embodiment)
In the second embodiment, the roughness measuring device 4 detects the abrasive surface of the wrapping film 1 being sent to the next shoe case 3b via the first shoe case 3a. In other words, this is a case where the roughness measuring device 4 is installed between the two shoe cases 3a and 3b.
[0041]
FIG. 6 is a view showing the lapping apparatus in a state where the roughness measuring device 4 is installed between the shoe cases 3a and 3b.
[0042]
The lapping apparatus shown in FIG. 6 has almost the same configuration as that of the lapping apparatus shown in FIG. 2 except that the roughness measuring device 4 is arranged between the shoe cases 3a and 3b. In the embodiment, the same components are denoted by the same reference numerals, and description thereof will be omitted. A configuration that is a feature of the second embodiment will be briefly described.
[0043]
The roughness measuring device 4 is disposed between the shoe cases 3a and 3b, and detects the state of the abrasive surface of the wrapping film 1. The roughness measuring device 4 is connected to the roughness measuring device main body 40, and transmits a captured image to the roughness measuring device main body 40. The roughness measuring device main body 40 is connected to the control unit C. Control unit C is further connected to a motor M _3, and the pressing force adjusting means 15 controls the motor M ₃ and the pressing force adjusting means 15 _based on the measurement result by the roughness measuring instrument 4.
[0044]
When the abrasive surface of the wrapping film 1 is detected between the shoe cases 3a and 3b, since the abrasive surface is used once when passing through the first shoe case 3a, chips are clogged between the abrasive particles, and It is shaved and smaller. Since the clogging and the wear of the abrasive grains vary, the lapping apparatus shown in FIG. 6 controls each component in accordance with the variations.
[0045]
The operation of each configuration will be described. First, the roughness measuring device 4 captures an image of the state of the abrasive grains and transmits the image to the roughness measuring device main body 40. The roughness measuring device main body 40 calculates the protrusion height of the abrasive grains based on the image. This calculation result is transmitted from the roughness measuring device main body 40 to the control unit C. The control unit C determines the degree of clogging of the abrasive grain surface, stores the determination result and the location of the wrapping film 1 where the determination is made, and controls the operation of each component based on these.
[0046]
The controller C controls (1) the motor M ₃ or (2) the pressing force adjusting means 15 in accordance with the protruding height of the abrasive grains to secure stable lapping.
[0047]
(1) appropriate processing is performed lapping when clogging portion for controlling the motor M ₃ is not performed, it is impossible to obtain a desired surface roughness. Therefore, the control unit C determines whether or not the protrusion height measured by the roughness measuring device 4 is such that appropriate processing can be performed. The control unit C stores the location on the wrapping film 1 determined as the determination result, and thus the location of the wrapping film 1 that has been fed to the location used for the lapping process, that is, the shoe held by the shoe case 3b. Then, a search is made as to the state of the clogging of the portion pressed against the work W by the step 2. If clogging has occurred such that proper processing cannot be performed, the control unit C does not use a stable processing amount even if processing is performed at this portion of the wrapping film 1. to, and controls the motor M _3, it feeds the wrapping film 1.
[0048]
If the degree of clogging is normal, that is, if it is determined that the protruding height of the abrasive grains is not low, the control unit C sends out the wrapping film 1 with a normal feeding amount, and the shoe case 3b is held. The portion of the wrapping film 1 pressed against the shoe 2 to be used is used as it is.
[0049]
(2) When controlling the pressing force adjusting means 15 Even if the lapping process is directly performed at the clogged portion, a desired surface roughness cannot be obtained depending on the degree of clogging. Therefore, the control unit C stores the position of the clogged portion on the wrapping film 1 so that when the clogged portion is sent to a position used for lapping, the pressing force of the shoe 2 against the work is increased. The pressing force adjusting means 15 is controlled. Thereby, even if the wrapping film 1 in which the cutting force is reduced due to clogging is used, a sufficient cutting amount can be obtained by increasing the pressing force, and a desired surface roughness can be obtained.
[0050]
The relationship between the protrusion height of the abrasive grains and the pressing force of the shoe 2 is as follows.
[0051]
FIG. 7 is a diagram showing the relationship between the pressing height and the protrusion height of the abrasive grains.
[0052]
In FIG. 7, the horizontal axis indicates the protrusion height of the abrasive grains with reference to the protrusion height of the abrasive grains immediately after truing the unused wrapping film 1 as 100%. The vertical axis indicates the pressing force based on the appropriate pressing force of the shoe 2 when the protrusion height of the abrasive grains is 100% (immediately after truing), as 100%.
[0053]
As shown in FIG. 7, in the case of the wrapping film 1 immediately after truing, the pressing force is set to 100%. However, when the wrapping film 1 is clogged or worn and the protrusion height of the abrasive grains is reduced, the pressing force is reduced. Unless strengthened, a predetermined surface roughness cannot be obtained. That is, the surface of the wrapping film 1 that has passed through the first shoe case 3a is clogged due to processing, or the abrasive grains are worn away, and the protrusion height is reduced.
[0054]
For example, when the protrusion height via the shoe case 3a is 60% immediately after truing, a desired surface roughness cannot be obtained with the same pressing force as in the case of 100%. Therefore, as shown in FIG. 7, a desired surface roughness can be obtained by increasing the pressing force to 110%. When the protrusion height is 20%, a desired surface roughness can be obtained by setting the pressing force to 120%.
[0055]
As described above, in the second embodiment, (1) the motor M ₃ and (2) the pressing force adjusting means 15 are controlled based on the detection of the protrusion height of the abrasive grains.
[0056]
Thus, (1) when controlling the motor M ₃ are, by changing the feed amount of lapping film 1, to prevent the use of stable and uniform portions of the wrapping film 1 interfere with processing, stable The amount of processing can be obtained.
[0057]
(2) When controlling the pressing force adjusting means 15, even in lapping processing using abrasive grains having a low protrusion height due to clogging and abrasion, stable and uniform processing can be achieved by changing the pressing force. You can get the quantity.
[0058]
(Third embodiment)
In the third embodiment, the roughness measuring device 4 detects the abrasive surface of the wrapping film 1 that has passed through the two shoe cases 3a and 3b. In other words, this is a case where the roughness measuring device 4 is installed behind the two shoe cases 3a and 3b in the feeding direction.
[0059]
FIG. 8 is a diagram showing the lapping apparatus in a state where the roughness measuring device 4 is installed at the back of the shoe cases 3a and 3b.
[0060]
The lapping apparatus shown in FIG. 8 has almost the same configuration as that of the lapping apparatus shown in FIG. 2 except that the roughness measuring device 4 is disposed behind two shoe cases 3a and 3b. In the third embodiment, the same components are denoted by the same reference numerals, and description thereof will be omitted. A configuration that is a feature of the third embodiment will be briefly described.
[0061]
The roughness measuring device 4 is disposed between the shoe case 3a and the shoe case 3b, and detects the state of the abrasive grain surface of the wrapping film 1. The roughness measuring device 4 is connected to the roughness measuring device main body 40, and transmits a captured image to the roughness measuring device main body 40. The roughness measuring device main body 40 is connected to the control unit C. Control unit C is further connected to a motor M _3, and the pressing force adjusting means 15 controls the motor M ₃ and the pressing force adjusting means 15 _based on the measurement result by the roughness measuring instrument 4.
[0062]
When the abrasive grain surface of the wrapping film 1 is detected at the back of the shoe cases 3a and 3b, the chips are clogged between the abrasive grains because the abrasive grain surface is used when passing through the two shoe cases 3a and 3b. . In the lapping apparatus shown in FIG. 8, clogging between abrasive grains is detected by the roughness measuring device 4, and each component is controlled based on the detection result.
[0063]
The operation of each configuration will be described. First, the roughness measuring device 4 captures an image of the state of the abrasive grains and transmits the image to the roughness measuring device main body 40. The roughness measuring device main body 40 calculates the protrusion height of the abrasive grains based on the image. This calculation result is transmitted from the roughness measuring device main body 40 to the control unit C. The control unit C determines the degree of clogging of the abrasive grain surface, stores the determination result and the location of the wrapping film 1 where the determination is made, and controls the operation of each component based on these.
[0064]
When the degree of clogging or abrasion is severe, that is, when it is determined that the protruding height of the abrasive grains is low, the control unit C feeds back as a condition when the wrapping film 1 is used in the future.
[0065]
Specifically, the control unit C determines, based on the protruding height of the abrasive grains on the abrasive grain surface of the wrapping film 1 that has been processed and discharged, Only the clogging is caused, and where the clogging and the abrasion hardly occur is detected, and the feedback is performed for examining the feeding amount of the wrapping film 1 and the pressing force of the shoe 2 on the work. The content fed back is stored in a storage device (not shown), which can be analyzed and used for future processing.
[0066]
As described above, in the third embodiment, since the surface state of the wrapping film 1 after processing is detected by the roughness measuring device 4, the amount of the wrapping film 1 to be sent out in the future, It can be used for adjusting the pressing force of the shoe 2, and a stable and uniform processing amount in the future can be achieved.
[0067]
As described above in the first to third embodiments, in the present invention, the surface state of the wrapping film 1 is detected by the roughness measuring device 4 and the roughness measuring device main body 40, and based on the detection result, At least one of the feeding amount of the wrapping film 1 during the processing stop and the pressing force of the shoe 2 during the processing is changed. Therefore, a stable and uniform lapping process can be performed according to the state of the wrapping film 1 used for processing or the state of the wrapping film 1 used for processing.
[0068]
Specifically, by adjusting the pressing force of the shoe 2 based on the protrusion amount of the abrasive grains detected by the roughness measuring device 4, it is possible to perform a good lapping process corresponding to the protrusion amount.
[0069]
In addition, by controlling the feeding amount of the wrapping film 1 based on the detected protrusion amount of the abrasive grains, it is possible to prevent the use of the wrapping film 1 in which the desired processing cannot be performed due to clogging, and perform a good lapping process. be able to.
[0070]
In the above embodiment, the case where the crankshaft is processed as the work W has been described, but the present invention is not limited to this. The present invention can also be applied to the processing of a workpiece having an arc-shaped processing surface with a non-circular cross section, such as a camshaft.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a lapping apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic sectional view showing a closed state of a shoe pressing means.
FIG. 3 is a schematic sectional view showing an open state of the shoe pressing means.
FIG. 4 is a view showing a state of truing of abrasive grains.
FIG. 5 is an enlarged view showing an abrasive grain surface.
FIG. 6 is a diagram showing a lapping apparatus in a state where a roughness measuring device is installed between shoe cases.
FIG. 7 is a diagram showing the relationship between the protrusion height of abrasive grains and the pressing force.
FIG. 8 is a view showing a lapping apparatus in a state where a roughness measuring device is installed at the back of a shoe case.
[Explanation of symbols]
1: Wrapping film,
2 ... shoes,
3a, 3b ... shoe case,
4 ... roughness measuring instrument,
5 ... supply reel,
6 ... take-up reel,
7 ... Trueing means,
10 ... shoe pressing means
15 ... pressing force adjusting means,
20 ... rotation drive means,
30 ... oscillation means,
40: roughness measuring instrument body
70 ... truer body,
71 ... truing part,
C: control unit,
M ₃ ... motor,
R ₁ , R ₂ , R ₅ ... film roller,
W: Work.

Claims (6)

Holding means for holding the work rotatably,
A wrapping film in which abrasive grains are provided on one surface of a thin base material,
A pressing member that presses the abrasive surface of the wrapping film against the work being rotated by the holding unit,
Film feeding means for feeding the wrapping film while processing is stopped,
Detecting means for detecting the surface state of the wrapping film,
Control means for controlling at least one of the pressing force of the pressing member during processing, and the feeding amount of the wrapping film during processing based on the detection result,
Lapping processing device having The lapping apparatus according to claim 1, wherein the detection unit detects a protrusion height of the abrasive grains on the wrapping film. The lapping apparatus according to claim 1 or 2, further comprising a truing means for polishing the abrasive grains before processing to a predetermined protrusion height. The lapping apparatus according to any one of claims 1 to 3, wherein the detection unit detects a surface state of the unused wrapping film. The lapping processing device according to any one of claims 1 to 4, wherein the detection unit detects a surface state of the wrapping film after use. A lapping film provided with abrasive grains on one surface of a thin base material is pressed against the work by a pressing member from the abrasive grain surface, and at the same time as applying rotation to the work, giving relative vibration to the wrapping film with respect to the work. A surface processing method for processing the surface of the work,
Detecting the surface state of the wrapping film,
Based on the detection result, the pressing force of the pressing member during processing, and a step of controlling at least one of the feeding amount of the wrapping film during processing is stopped,
A lapping method comprising:

Images