JP2022125652A - Cylindrical workpiece contour correction device - Google Patents

Abstract

To provide a cylindrical workpiece contour correction device which can highly accurately correct an outer shape of cylindrical workpiece without breaking the cylindrical workpiece.SOLUTION: A cylindrical workpiece contour correction device includes: an upper member having a first horizontal surface; a lower member having a second horizontal surface facing the first horizontal surface; a grinding surface provided on at least one of the first horizontal surface and the second horizontal surface load applying means for applying a load in a direction to the cylindrical workpiece arranged between the first horizontal surface and the second horizontal surface, to at least one of the upper member and the lower member; and driving means for reciprocating at least one of the upper member and the lower member in a rolling direction of the cylindrical workpiece arranged between the first horizontal surface and the second horizontal surface.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a cylindrical work outer shape correcting device.

For example, Patent Literature 1 below discloses a technique of polishing the surface of a cylindrical workpiece (monolithic separation column) by inserting the cylindrical workpiece (monolithic separation column) between two rotating grindstones and pressing a blade against them. Patent Document 2 below discloses a technique of polishing the surface of a cylindrical workpiece (columnar ceramic) by sandwiching the cylindrical workpiece (cylindrical ceramic) between two flat grindstones and causing them to rotate by vibration.

Japanese Patent No. 5117091 Japanese Patent Application Laid-Open No. 09-225814

However, the technique disclosed in Patent Literature 1 has a problem that when the cylindrical work has a large warp, the cylindrical work is sandwiched between the rotary grindstones and broken. Further, the technique disclosed in Patent Document 2 has a problem that when the cylindrical work has a large warp, the cylindrical work does not rotate and only a specific surface is scraped. Therefore, the techniques disclosed in Patent Documents 1 and 2 cannot modify the outer shape of the cylindrical work with high accuracy without breaking the cylindrical work.

A cylindrical work outer shape correcting device according to one embodiment includes an upper member having a first horizontal surface, a lower member having a second horizontal surface facing the first horizontal surface, and provided on at least one of the first horizontal surface and the second horizontal surface. a load applying means for applying a load in a direction toward a cylindrical work disposed between the first horizontal surface and the second horizontal surface to at least one of the upper member and the lower member; the upper member and and driving means for reciprocating at least one of the lower members along the rolling direction of the cylindrical work arranged between the first horizontal surface and the second horizontal surface.

According to one embodiment, it is possible to provide a cylindrical work outer shape correcting device capable of highly accurately correcting the outer shape of a cylindrical work without breaking the cylindrical work.

FIG. 1 is a diagram showing the configuration of a columnar work outer shape correcting device according to an embodiment; A diagram showing the operation of the cylindrical work outer shape correcting device according to one embodiment. FIG. 4 is a diagram showing the dimensions and state of a cylindrical work according to an embodiment; A diagram showing the operation of a cylindrical work outer shape correcting device according to a modified example.

An embodiment will be described below with reference to the drawings. In each embodiment described below, for convenience, the X-axis direction and the Y-axis direction are defined as horizontal directions, and the Z-axis direction is defined as a vertical direction (vertical direction). However, the horizontal movement direction of the lower moving plate 104 provided in the cylindrical work outer shape correcting device 100 is assumed to be the X-axis direction.

(Structure of Cylindrical Work External Shape Correcting Apparatus 100)
FIG. 1 is a diagram showing the configuration of a columnar workpiece outer shape correcting device 100 according to one embodiment. A cylindrical work outer shape correcting device 100 shown in FIG. 1 is a device capable of highly accurately correcting the outer shape of a plurality of cylindrical works 10 without breaking the plurality of cylindrical works 10 .

The cylindrical work 10 is a ceramic rod having a porous structure, and is used as a column for HPLC (High Performance Liquid Chromatography) analysis, for example. HPLC analysis is an analysis method that separates and analyzes a plurality of substances contained in a liquid due to differences in the movement speed of each substance in the liquid flowing inside a column. In the HPLC analysis, a concave portion for installing the cylindrical work 10 is formed in the plate, and the cylindrical work 10 has a highly accurate cylindrical shape so that the cylindrical work 10 can be fitted into the concave portion without any gap. It is preferred to have A cylindrical work outer shape correction device 100 according to one embodiment corrects an outer shape defect (diameter defect, warp, etc.) and an appearance defect (scratches, dents, etc.) of the cylindrical work 10, thereby It is a device that can correct the shape into a highly accurate columnar shape.

That is, the cylindrical work outer shape correcting device 100 according to one embodiment not only polishes the outer peripheral surface of the cylindrical work 10 to prepare the outer peripheral surface, but also adjusts the outer periphery of the cylindrical work 10 while rolling the cylindrical work 10 . This device can correct the external shape of the cylindrical workpiece 10 by polishing the surface.

As shown in FIG. 1, the cylindrical workpiece outer shape correcting device 100 includes a base 102, a stage 103, a lower moving plate 104, an upper pressing plate 106, an arm 108, a gap adjusting means 110, a weight 112, a controller 120, and a user. An interface unit 130 is provided.

The base 102 supports each component of the cylindrical workpiece outer shape correcting device 100 . An upper surface 102A of the base 102 is a horizontal plane parallel to the XY plane.

The stage 103 is an example of "driving means". The stage 103 is driven by a motor or the like to reciprocate in the horizontal movement direction (X-axis direction) on the upper surface 102A of the base 102 while holding the lower moving plate 104 . As a result, the stage 103 reciprocates the lower moving plate 104 along the X-axis direction (rolling direction of the cylindrical workpiece 10).

The lower moving plate 104 is an example of a “lower member” and is a horizontal plate-shaped member held by the stage 103 . The lower moving plate 104 is held by the stage 103 so that its upper surface 104A (an example of a "second horizontal plane") is a horizontal plane parallel to the XY plane. As a result, the lower moving plate 104 reciprocates along with the stage 103 in the horizontal movement direction (X-axis direction). As a result, the lower moving plate 104 reciprocates the cylindrical workpiece 10 placed in the gap 100A between the upper pressing plate 106 and the lower moving plate 104 while rolling in the X-axis direction. A lower abrasive paper 105 is provided on the upper surface 104A of the lower moving plate 104 . The lower abrasive paper 105 is an example of a "grinding surface" and grinds the outer peripheral surface of the cylindrical work 10 as the cylindrical work 10 reciprocates in the gap 100A. For example, the lower abrasive paper 105 is attached to the upper surface 104A with an adhesive.

The upper pressing plate 106 is an example of an “upper member”, and is a horizontal plate-like member provided above the lower moving plate 104 so as to face the lower moving plate 104 . A lower surface 106A of the upper pressing plate 106 is an example of a "first horizontal plane" and is a horizontal plane parallel to the XY plane. That is, the lower surface 106A of the upper pressing plate 106 faces the upper surface 104A of the lower moving plate 104 and is parallel to the upper surface 104A of the lower moving plate 104. As shown in FIG. The upper pressing plate 106 is positioned between the upper pressing plate 106 and the lower moving plate 104 by the weight of the upper pressing plate 106 and the total weight of the weight 112 placed on the upper surface 106B of the upper pressing plate 106. The cylindrical work 10 placed in the gap 100A is pressed from above. An upper abrasive paper 107 is provided on the lower surface 106A of the upper pressing plate 106 . The upper polishing paper 107 is an example of a "grinding surface" and polishes the outer peripheral surface of the cylindrical work 10 as the cylindrical work 10 reciprocates in the gap 100A. For example, the upper abrasive paper 107 is attached to the lower surface 106A with an adhesive.

Arm 108 is provided on upper surface 102A of base 102 . The arm 108 supports the upper pressing plate 106 so as to be movable in the vertical direction (Z-axis direction). In the example shown in FIG. 1, the arm 108 is configured with a post portion 108A and a rotating portion 108B. The columnar portion 108A is a columnar portion vertically erected upward (in the positive Z-axis direction) from the upper surface 102A of the base portion 102 . The rotating portion 108B is an arm-like portion that is rotatably supported by the upper end portion of the supporting column portion 108A. The rotating portion 108B suspends the upper pressing plate 106 from above by its tip portion. The rotating portion 108B can move the upper pressing plate 106 in the vertical direction (Z-axis direction) by rotating.

The gap adjusting means 110 is interposed between the lower surface 106A of the upper pressing plate 106 and the upper surface 104A of the lower moving plate 104 to adjust the minimum gap width of the gap 100A between the lower surface 106A and the upper surface 104A to a predetermined size. stipulate. In the example shown in FIG. 1, rollers 110A having a predetermined diameter are provided as the gap adjusting means 110 at both ends of the upper pressing plate 106 in the X-axis direction. In the example shown in FIG. 1, the minimum gap width of the gap 100A is adjusted to a predetermined size by landing the lower end of the roller 110A on the upper surface of the lower moving plate 104. In the example shown in FIG. The minimum gap width of the gap 100A is set to be substantially the same size as the target size so that the diameter of the cylindrical workpiece 10 after polishing becomes the target size. The position of the roller 110A can be adjusted with respect to the upper pressing plate 106 in the vertical direction (Z-axis direction). The cylindrical work outer shape correcting device 100 according to one embodiment can adjust the minimum gap width of the gap 100A by adjusting the vertical position of the roller 110A. However, not limited to this, for example, the columnar workpiece outer shape correcting device 100 according to one embodiment can adjust the minimum gap width of the gap 100A by attaching rollers 110A having different diameters to the upper pressing plate 106. may be

Weight 112 is placed on upper surface 106B of upper pressing plate 106 . The weight 112 applies a downward (negative Z-axis direction) load to the upper pressing plate 106 . For the weight 112, for example, a weight (for example, a weight) made of a metal material is used. In the example shown in FIG. 1, the cylindrical work outer shape correcting device 100 includes two weights 112 so that the load applied from the upper pressing plate 106 to the cylindrical work 10 is the target load. However, without being limited to this, the cylindrical work outer shape correcting device 100 may include one or three or more weights 112 so that the load applied from the upper pressing plate 106 to the cylindrical work 10 becomes the target load. . That is, by adjusting the total weight of the weight 112 , the cylindrical work outer shape correcting device 100 can adjust the load applied from the upper pressing plate 106 to the cylindrical work 10 . The load applied from the upper pressing plate 106 to the cylindrical work 10 is the sum of the total weight of the weight 112 and the weight of the upper pressing plate 106 itself.

A controller 120 controls the operation of the stage 103 . For example, the control device 120 controls the start, stop, movement speed, movement distance, operation time, number of operations, etc. of the horizontal movement operation of the stage 103 . Controller 120 can control the operation of stage 103 according to a control program. For example, the control device 120 can stop the operation of the stage 103 when the operation time or number of operations of the stage 103 reaches a predetermined operation time or number of operations according to the control program. Also, for example, the control device 120 can change the moving speed of the stage 103 step by step according to the control program. The control device 120 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Each function of the control device 120 described above is realized, for example, by the CPU executing a program stored in the ROM in the control device 120 .

The user interface unit 130 performs input and output for the operator of the cylindrical workpiece outer shape correcting device 100 . In the example shown in FIG. 1, user interface section 130 has counter 131 , speedometer 132 , start button 133 and stop button 134 . A counter 131 displays the number of horizontal movements of the lower moving plate 104 . A speedometer 132 displays the horizontal movement speed of the lower moving plate 104 . The start button 133 outputs an operation start signal for the horizontal reciprocating operation of the lower moving plate 104 to the control device 120 when pressed by the operator. The stop button 134 outputs an operation stop signal for the horizontal reciprocating movement of the lower moving plate 104 to the control device 120 when pressed by the operator.

(Correcting Work Process for Cylindrical Work 10)
Next, with reference to FIG. 2, a work process for correcting the cylindrical work 10 using the cylindrical work outer shape correcting device 100 according to one embodiment will be described. FIG. 2 is a diagram showing the operation of the cylindrical work outer shape modifying device 100 according to one embodiment.

First, an operator lifts up the upper pressing plate 106 and rolls a plurality of cylindrical works 10 on the upper surface 104A of the lower moving plate 104 (the area where the lower abrasive paper 105 is provided). They are arranged side by side in the direction (X-axis direction).

Next, the operator places the upper pressing plate 106 on the plurality of cylindrical works 10 as shown in FIG. 2(a). Also, the operator places the weight 112 on the upper surface 106B of the upper pressing plate 106 . As a result, as shown in FIG. 2A, the plurality of cylindrical workpieces 10 are pressed from above by the upper pressing plate 106, and are moved downward by the weight of the upper pressing plate 106 and the weight of the weight 112. It will be sandwiched between the upper surface 104A of the plate 104 and the lower surface 106A of the upper pressing plate 106 .

Next, the operator presses the start button 133 (see FIG. 1) of the cylindrical work outer shape correcting device 100 to instruct the start of horizontal reciprocating movement of the stage 103 . Note that the operator can preset the operation speed, the number of times of operation, the operation time, etc. of the horizontal reciprocating movement of the stage 103 for the columnar workpiece outer shape correcting device 100 .

As shown in FIG. 2B, the stage 103 is horizontally reciprocated in the X-axis direction at a preset operating speed under the control of the control device 120 (see FIG. 1) in accordance with a start instruction from the operator. Start working. Along with this, the lower moving plate 104 held by the stage 103 starts reciprocating horizontally in the X-axis direction together with the stage 103 .

Further, as shown in FIG. 2(b), the horizontal reciprocating motion of the lower moving plate 104 moves the plurality of cylindrical works 10 within the gap 100A between the lower moving plate 104 and the upper pressing plate 106. , reciprocate while rolling in the X-axis direction. When the plurality of cylindrical works 10 are reciprocating while rolling in the X-axis direction, the lower abrasive paper 105 provided on the upper surface 104A of the lower moving plate 104 and the lower surface of the upper pressing plate 106 are pressed against each other. The outer peripheral surface is polished by the upper polishing paper 107 provided in 106A. At this time, the outer peripheral surfaces of the plurality of cylindrical works 10 are efficiently polished by the weight of the upper pressing plate 106 and the weight of the weight 112 . The stage 103 is controlled by the control device 120 in the amount of movement of the lower moving plate 104 in the X-axis direction so that each columnar work 10 rotates one or more times. As a result, the cylindrical work outer shape correcting device 100 according to one embodiment can grind the outer peripheral surface of each cylindrical work 10 over the entire circumference. can be suppressed.

When the stage 103 reaches a preset number of operations or a preset operation time under the control of the control device 120 (see FIG. 1), it ends the horizontal reciprocating motion. However, the end of the operation of the stage 103 may be due to the operator pressing the stop button 134 . While the stage 103 and the lower moving plate 104 are horizontally reciprocating, the plurality of cylindrical workpieces 10 are repeatedly reciprocated while rolling in the X-axis direction, thereby gradually polishing the outer peripheral surface. .

Then, as shown in FIG. 2(c), when the stage 103 and the lower moving plate 104 complete the horizontal reciprocating movement, the plurality of cylindrical workpieces 10 are corrected for defects such as external appearance defects, and have a predetermined shape. It has a highly accurate columnar shape with a diameter (≈minimum gap width of gap 100A defined by roller 110A). For example, FIG. 2C shows an example in which one columnar work 10 is corrected from a warped state to a non-warped state. In order to realize this, in the cylindrical work outer shape correcting device 100 according to one embodiment, the operation time and number of times of operation of the stage 103, the load applied to the plurality of cylindrical works 10 (that is, the weight of the weight 112), the upper polishing paper The particle size and the like of 107 and lower abrasive paper 105 can be set appropriately in advance based on test results, simulation results, and the like.

The operator temporarily stops the operation of the stage 103 and replaces the upper abrasive paper 107 and the lower abrasive paper 105 in the middle of the operation of the stage 103 . The granularity may be changed to be progressively finer.

In addition, the columnar work outer shape correction device 100 may change the moving speed of the stage 103 step by step according to an instruction from the operator or a control program. For example, the cylindrical work outer shape correction device 100 may increase the moving speed of the stage 103 step by step so that the moving speed of the stage 103 increases as the accuracy of the cylindrical work 10 increases.

(Example of Correction Work for Columnar Work 10)
FIG. 3 is a diagram showing the dimensions and state of the cylindrical workpiece 10 according to one embodiment. FIG. 3(a) shows the dimensions and states of two cylindrical works 10 before correction work using the cylindrical work outer shape correcting device 100 according to one embodiment. FIG. 3(b) is a diagram showing the dimensions and states of the two cylindrical works 10 after correction work using the cylindrical work external shape correcting device 100 according to one embodiment.

As shown in FIG. 3(a), the two cylindrical works 10A and 10B before correction work using the cylindrical work outer shape correcting device 100 both have outer shape defects (warp and diameter variation) and appearance defects. (scratches and dents).

On the other hand, as shown in FIG. 3B, both of the two cylindrical works 10A and 10B after the correction work using the cylindrical work outer shape correcting device 100 are corrected by the cylindrical work outer shape correcting device 100. Due to the polishing, the poor appearance (warp and unevenness in diameter) and the poor appearance (scratches and dents) are eliminated. .

As described above, the cylindrical workpiece outer shape correcting device 100 according to one embodiment includes the upper pressing plate 106 having the lower surface 106A (first horizontal surface) and the upper pressing plate 106 having the upper surface 104A (second horizontal surface) facing the lower surface 106A. Side moving plate 104, upper polishing paper 107 and lower polishing paper 105 (grinding surface) provided on lower surface 106A and upper surface 104A, upper pressing plate 106, circles arranged between lower surface 106A and upper surface 104A. A weight 112 (load applying means) for applying a load to the columnar work 10 and a lower moving plate 104 are reciprocated along the rolling direction of the columnar work 10 arranged between the lower surface 106A and the upper surface 104A. and a stage 103 (driving means) for causing the

As a result, the cylindrical work outer shape correcting device 100 according to one embodiment can reciprocate the cylindrical work 10 while rolling, and at that time, gradually grind the outer peripheral surface of the cylindrical work 10 to obtain a circular shape. The poor outer diameter and poor appearance of the columnar workpiece 10 can be gradually eliminated, and the columnar workpiece 10 can have a highly accurate columnar shape with a predetermined diameter. Therefore, according to the cylindrical work outer shape correcting device 100 according to one embodiment, the outer shape of the cylindrical work 10 can be corrected with high accuracy without breaking the cylindrical work 10 .

(Modification)
Next, with reference to FIG. 4, a modified example of the cylindrical workpiece outer shape correcting device 100 according to one embodiment will be described. FIG. 4 is a diagram showing the operation of the columnar workpiece outer shape correcting device 100-2 according to one modification.

As shown in FIG. 4, a columnar workpiece outer shape correcting device 100-2 according to a modified example has an upper pressing plate 106 that horizontally reciprocates, a lower abrasive paper 105 is not provided, and a gap adjusting device. It differs from the columnar workpiece outer shape correcting device 100 in that the means 110 has a columnar stopper 110B protruding upward from the upper surface 104A of the lower moving plate 104 . In addition, in the columnar workpiece outer shape correcting device 100-2 according to the modified example, the control device 120 controls the horizontal reciprocating motion of the upper pressing plate 106. FIG.

The upper end portion of the stopper 110B abuts against the lower surface 106A of the upper pressing plate 106 to define the minimum gap width of the gap 100A. The amount of protrusion of the stopper 110B upward from the upper surface 104A of the lower moving plate 104 can be adjusted. A cylindrical work outer shape correcting device 100-2 according to a modified example can adjust the minimum gap width of the gap 100A by adjusting the protrusion amount of the stopper 110B.

As shown in FIG. 4(b), in the cylindrical work outer shape correcting device 100-2 according to the modified example, the plurality of cylindrical works 10 are moved by horizontal reciprocating movement of the upper pressing plate 106 in the X-axis direction. In the gap 100A between the lower moving plate 104 and the upper pressing plate 106, it reciprocates while rolling in the X-axis direction. The outer peripheral surfaces of the plurality of cylindrical works 10 are polished by the upper polishing paper 107 provided on the lower surface 106A of the upper pressing plate 106 while reciprocating while rolling in the X-axis direction. At this time, the amount of movement of the upper pressing plate 106 in the X-axis direction is controlled by the control device 120 so that each columnar work 10 rotates one or more times. As a result, the cylindrical work outer shape correcting device 100-2 according to the modified example can grind the outer peripheral surface of each cylindrical work 10 over the entire circumference. Uneven wear can be suppressed.

Then, in the cylindrical work outer shape correcting device 100-2 according to the modified example, as shown in FIG. Defects in external shape, appearance, etc. are corrected, and it has a highly accurate columnar shape with a predetermined diameter (≈minimum gap width of gap 100A defined by stopper 110B). For example, FIG. 4C shows an example in which one columnar work 10 is corrected from a warped state to a non-warped state. In order to realize this, in the cylindrical work outer shape correcting device 100-2 according to the modified example, the operation time and number of operations of the upper pressing plate 106, the particle size of the upper abrasive paper 107, etc. are determined based on test results, simulation results, etc. can be properly set in advance.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to these embodiments, and various modifications or Change is possible.

For example, in the cylindrical work outer shape correcting device 100 according to one embodiment, the upper pressing plate 106 may perform a horizontal reciprocating motion, the lower moving plate 104 may perform a horizontal reciprocating motion, and the upper pressing plate 106 and Both of the lower moving plates 104 may be horizontally reciprocated.

Further, for example, the "load applying means" may apply a load to the upper pressing plate 106, may apply a load to the lower moving plate 104, and may apply a load to both the upper pressing plate 106 and the lower moving plate 104. may be loaded. Also, the “load applying means” is not limited to the weight 112 .

10 Cylindrical Work 100, 100-2 Cylindrical Work External Shape Correcting Device 100A Gap 102 Base 102A Upper Surface 103 Stage 104 Lower Moving Plate 104A Upper Surface 105 Lower Abrasive Paper 106 Upper Pressing Plate 106A Lower Surface 106B Upper Surface 107 Upper Abrasive Paper 108 Arm 108A Strut part 108B Rotating part 110 Gap adjusting means 110A Roller 110B Stopper 112 Weight 120 Control device 130 User interface part 131 Counter 132 Speedometer 133 Start button 134 Stop button

Claims (7)

an upper member having a first horizontal surface;
a lower member having a second horizontal surface facing the first horizontal surface;
a grinding surface provided on at least one of the first horizontal surface and the second horizontal surface;
load applying means for applying a load to at least one of the upper member and the lower member in a direction toward a cylindrical work disposed between the first horizontal surface and the second horizontal surface;
and driving means for reciprocating at least one of the upper member and the lower member along the rolling direction of the cylindrical work arranged between the first horizontal surface and the second horizontal surface. A device for correcting the outer shape of a cylindrical workpiece. The load applying means is
2. The cylindrical work outer shape correcting device according to claim 1, wherein the load is applied to at least one of the upper member and the lower member so as to be able to advance and retreat along the vertical direction. The drive means
3. The cylindrical work outer shape correcting device according to claim 1, wherein at least one of said upper member and said lower member is reciprocally moved so that said cylindrical work rotates more than once. The upper member is
supported so as to be movable in the vertical direction,
The load applying means is
4. The cylindrical work outer shape correcting device according to claim 1, wherein the weight is provided on the upper member. The drive means
5. The cylindrical work outer shape correcting device according to claim 4, wherein the lower member is reciprocatingly moved along the rolling direction of the cylindrical work. 6. The cylindrical workpiece according to any one of claims 1 to 5, further comprising gap adjusting means for setting a minimum gap width of the gap between said first horizontal surface and said second horizontal surface to a predetermined size. Appearance correction device. The gap adjusting means is
7. The cylindrical work outer shape correcting device according to claim 6, further comprising a roller provided on one of said upper member and said lower member and in contact with the other of said upper member and said lower member.

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