JP4047974B2 - Roll two-side width detection device in a roll grinder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a roll two-surface width portion detection apparatus in a roll grinder, and in particular, a roll two-surface width that detects an angular direction of a two-surface width portion in order to automatically connect a roll two-surface width portion to a face plate of a headstock. This relates to a part detection device.
[0002]
[Prior art]
In a roll grinder, both ends of the roll are supported by a center pin (main shaft) provided on the main spindle face plate of the headstock and a center pin of the tailstock, and the two-surface width portion provided at the end of the roll is used as the main spindle base. The roll is rotated by the rotation of the face plate, sandwiched between the two counters provided on the face plate at the diagonal position.
[0003]
The roll setting in the roll grinder as described above is supported by the intermediate portion of the roll loaded on the roll grinder, and the angle direction of the two width portions of the roll is visually confirmed by the operator. In operation, the face plate is rotated to an angle that matches the angular direction of the two-sided width portion, and the two-sided width portion is sandwiched between the two turns.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional roll grinder, the angular directions of the two width portions of the roll when loaded onto the roll grinder are disjoint and are loaded on the roll grinder and supported by the cradle. Since the angle direction of the width across flats of the roll is unknown, visual inspection by the operator is necessary when setting the roll, and this makes it impossible to automate the roll setting, and it takes time to set the roll. This is a cause of reducing the operating rate of the roll grinder.
[0005]
The present invention has been made paying attention to the problems as described above, and detects the angular direction of the two-sided width portion of the roll loaded on the roll grinder in order to enable automation of roll setting. An object of the present invention is to provide a roll two-surface width detecting device.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, a roll two-side width detecting device in a roll grinder according to the invention described in claim 1 is a two-side width portion provided at an end of a roll loaded on the roll grinder. In the roll two-surface width detecting device that detects the angular direction of the sensor, the sensor holder provided rotatably around the central axis of the main axis of the roll grinder, and the sensor holder is attached to the sensor holder, two parallel flat surface portions to each other and the two boundary is a separately detectable, and which is movable in the roll radial sensor between the circumferential surface portion that exists between the two flat surface portions, said An angle detector that detects a rotation angle around the central axis of the sensor based on a rotation angle of the sensor holder, and a main axis central axis of at least one of the two boundary portions detected by the sensor of The degree input from the angle detector, is intended to have an angle calculating means for calculating the angular orientation of the from the angular flat plate-portion.
[0007]
Further, the roll two-sided width portion detecting device in the roll grinder according to the invention described in claim 2 is the roll two-sided width portion detecting device in the roll grinding machine according to claim 1, wherein the angle calculating means is the circle. The angle around the central axis of the two boundary portions existing at both ends of the peripheral surface portion is inputted from the angle detector, and the angle direction of the two-surface width portion is calculated from the angle of the two boundary portions. is there.
[0008]
Further, the roll two-sided width detecting device in the roll grinder according to the invention described in claim 3 is the roll two-sided width detecting device in the roll grinding machine according to claim 1 or 2, wherein the sensor is a limit switch. The boundary portion is detected by turning on and off when the boundary portion passes through the boundary portion by the rotational movement of the sensor holding body at the boundary portion.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
[0011]
FIG. 1 shows an example of a roll grinder incorporating a roll two-surface width detecting device according to the present invention. A roll grinding machine, a carriage 3 that reciprocates on the carriage mounting bed 1 in the Z-axis direction (the roll axis direction, left and right as viewed in FIG. 1), and the carriage 3 mounted on the carriage 3 in the X-axis direction. A grinding wheel base 7 that reciprocates in a direction perpendicular to the paper surface of FIG. 1 to rotatably support the grinding wheel 5, and a headstock 11 that is disposed at the left end of the work mounting bed 9 in FIG. 1. And a tailstock 13 and an intermediate roll pedestal 15 which are arranged on the workpiece mounting bed 9 so that the arrangement position can be changed in the Z-axis direction.
[0012]
A face plate 17 that is rotationally driven by a spindle motor (not shown) is provided on an end surface portion of the spindle stock 11. The face plate 17 is provided with two turners (not shown) that are paired with the center pin 19. A center pin 21 is provided on the tailstock 13.
[0013]
In FIG. 1, reference numeral C denotes a roll center axis (main axis center axis) of a roll W (see FIG. 2) that is supported at both ends by the center pin 19 of the face plate 17 and the center pin 21 of the tailstock 13.
[0014]
FIG. 2 shows an embodiment of a roll two-surface width detecting device according to the present invention. The roll two-surface width portion detecting device is indicated by the reference numeral 51 as a whole.
[0015]
The two-surface width portion detection device 51 has a semicircular arc sensor holder 53. The sensor holding body 53 has a series of rack teeth 55 formed on the outer peripheral surface portion thereof, and is provided so as to be rotatable around the central axis of the main shaft by a guide roller 57 and a guide pinion 59 that are rotatably attached to the head stock 11.
[0016]
A drive gear 63 driven by a servo motor 61 is engaged with the rack teeth 55. The servomotor 61 is connected to a rotary encoder 65 for angle detection.
[0017]
A limit switch 69 is attached to the sensor holding body 53 by a fluid pressure cylinder device 67 so as to be movable in the roll radial direction (main shaft radial direction). Limit switch 69 is a sensor for detecting the boundary portion p of the two flat surface portions Wb mutually parallel roll width across flat portion Wa and the circumferential surface portion Wc that exist between the two flat surface portions Wb, roller When the actuator 71 comes into contact with the circumferential surface portion Wc and passes through the boundary portion p by the rotational movement of the sensor holding body 53, the state changes from the on state to the off state, or from the off state to the on state. p is detected.
[0018]
The rotary encoder 65 functions as an angle detector that detects the rotation angle of the limit switch 69 around the central axis of the main shaft.
[0019]
The angle calculation means 73 takes in the output signal (angle signal) of the rotary encoder 65 when the state of the limit switch 69 changes, and uses this as the angle around the principal axis center axis of the boundary part p. Is calculated.
[0020]
Next, the operation of the two-surface width portion detection device 51 having the above-described configuration will be described.
[0021]
When the roll W is loaded on the roll grinder and supported by the intermediate roll cradle 15, the limit switch 69 moves to the position where the roller actuator 71 can come into contact with the circumferential surface portion Wc according to the known roll dimensions. The cylinder device 67 moves forward. By moving the limit switch 69 in the main shaft radial direction (roll radial direction) by the fluid pressure cylinder device 67, it is possible to cope with rolls of various sizes.
[0022]
When the limit switch 69 is positioned at the forward position, if the roll two-sided width portion Wa is in the rotational direction in which the roller actuator 71 contacts the circumferential surface portion Wc, the limit switch 69 is turned on and the roller actuator 71 is turned flat. If there is a roll two-surface width portion Wa in the rotation direction opposite to Wb, the limit switch 69 is kept off.
[0023]
Next, the sensor holder 53 is rotationally moved around the spindle center axis by the servo motor 61. As a result, the limit switch 69 pivots around the spindle center axis. Due to the turning of the limit switch 69 around the central axis of the spindle, when the roller actuator 71 passes the boundary portion p, the limit switch 69 changes from the on state to the off state, or from the off state to the on state.
[0024]
The angle calculation means 73 takes in the angle signal of the rotary encoder 65 when the state of the limit switch 69 changes as described above, and uses this as the angle θa or θb around the main axis center axis of the boundary part p. Is calculated.
[0025]
If the development angle θx of the circumferential surface portion Wc is known, the calculation of the angle θc of the roll two-surface width portion Wa can be obtained from the angle θa of one boundary portion p by θa + θx and the angle θb of the other boundary portion p. , (Θa + θa + θx) / 2, the angle θc of the roll width across two sides Wa can be calculated. In addition, when the angles θa and θb of both the boundary portions p are detected, the angle θc of the roll two-surface width portion Wa can be calculated by the calculation of (θa + θb) / 2, which is more accurate than the former case. High roll width across two sides can be detected.
[0026]
As described above, if the angle θc of the roll two-surface width portion Wa is known, by rotating the face plate 17 in accordance with the angle θc, the two positions of the face plate 17 sandwich the two-surface width portion Wa. It is possible to perform this operation fully automatically without requiring manual work. This makes it possible to automate roll setting.
[0027]
In the above, the present invention has been described in detail with respect to specific embodiments. However, the present invention is not limited thereto, and various embodiments are possible within the scope of the present invention. This will be apparent to those skilled in the art.
[0028]
【The invention's effect】
As understood from the above description, according to the roll two-surface width portion detecting device according to the first aspect of the present invention, the roll two-surface width portions are parallel to each other by the sensor by the rotation around the main axis center axis of the sensor holder. At least one of the two boundary portions between the two flat surface portions and the circumferential surface portion existing between the two flat surface portions is detected, and the angle of the boundary portion around the central axis of the main axis Is detected from the angle detector, and the angle direction of the two-sided width portion is calculated from the angle by the angle calculating means. Therefore, the angle direction of the two-sided width portion of the roll loaded on the roll grinder is visually checked by the operator. It is possible to reliably detect without requiring work, and based on this, roll setting can be automated. In addition, since the sensor can move in the roll radial direction, the angular direction of the two-surface width portion of the roll of various dimensions can be reliably detected.
[0029]
According to the roll two-surface width detecting device according to the second aspect of the present invention, the angle calculation means detects the angle around the main axis of the two boundary portions existing at both ends of the circumferential surface portion. Since the angle direction of the two-surface width portion is calculated from the angle between the two boundary portions, the angle direction of the two-surface width portion is reliably detected with high accuracy.
[0030]
Moreover, according to the roll two-surface width part detection device according to the invention described in claim 3, since the sensor is configured by the limit switch, the roll two-surface width portion detection device can be configured at low cost.
[Brief description of the drawings]
FIG. 1 is an overall view showing an example of a roll grinding machine in which a roll two-surface width detecting device according to the present invention is incorporated.
FIG. 2 is a front view showing an embodiment of a roll two-surface width detecting device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bed for carriage mounting / returning platform 5 Wheel grinding wheel 7 Grinding wheel 7 Workpiece mounting bed 11 Spindle 13 Tailstock 15 Intermediate roll holder 17 Face plate 19, 21 Center pin 51 Roll two-sided width detector 53 Sensor holding Body 55 Rack tooth 61 Servo motor 63 Drive gear 65 Rotary encoder 67 Fluid pressure cylinder device 69 Limit switch 71 Roller actuator 73 Angle calculation means

Claims (3)

In the roll two-surface width portion detection device for detecting the angular direction of the two-surface width portion provided at the end of the roll loaded on the roll grinder,
A sensor holder provided rotatably around the central axis of the main axis of the roll grinding machine;
Attached to the sensor holder , two boundary portions between two parallel flat surfaces of the roll two-surface width portion and a circumferential surface portion existing between the two flat surfaces can be separately detected. And a sensor movable in the roll radial direction ,
An angle detector that detects a rotation angle around a central axis of the sensor from a rotation angle of the sensor holder;
An angle around the main axis center axis of at least one of the two boundary portions detected by the sensor is input from the angle detector, and the angle direction of the two-sided width portion is calculated from the angle. An angle calculation means;
The roll two-surface width part detection apparatus in the roll grinder characterized by having.   The angle calculation means inputs an angle around a principal axis central axis of two boundary portions existing at both ends of the circumferential surface portion from the angle detector, and the two-surface width portion from an angle of the two boundary portions The roll two-surface width part detecting device in the roll grinding machine according to claim 1, wherein the angle direction of the roll is calculated.   The roll grinding machine according to claim 1, wherein the sensor is configured by a limit switch, and detects the boundary portion by turning on and off when the sensor holding body passes through the boundary portion by rotational movement. Roll two-surface width portion detection apparatus.

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