JP2579845B2 - Grinding equipment for chamfering - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering grinding device for chamfering a work material by chamfering a corner of the material by a grinder.

[0002]

2. Description of the Related Art Conventionally, as a means for grinding a corner edge of a work material, as disclosed in JP-A-63-191561,
One or only two grinding heads are arranged on the side of the material feeding passage so that only one or two corners of the processing material are ground for each reciprocation. In the case where the grinding process is performed on the 8th or 12th surface, it is necessary to change the work material many times at the supply position and to make it reciprocate several times.
It was extremely cumbersome and time consuming. The present invention
It is an object of the present invention to provide a chamfering grinding device capable of grinding eight surfaces in one reciprocation.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a holding device which is mounted on a guide rail disposed along a material feeding path, holds a processing material on an upper surface thereof, and holds the processing material during traveling. A traveling platform on which a workpiece is mounted, a width determining device for positioning the workpiece on the traveling platform in a width direction, and the traveling platform is passed over a drive wheel and a driven wheel. A feeder device that reciprocates the feeder passage by means of the traveling chain, a conversion device that is disposed at one end of the feeder passage, and that horizontally rotates the work material 90 degrees about its longitudinal axis; On both sides, the grinding surfaces oppose each other across the material feeding device,
A lower edge grinding head arranged movably in the width direction at a position abutting on both corner surfaces of the lower surface of the processed material, and on both sides of the material feeding passage, the ground surfaces face each other across the material feeding device, An upper edge grinding head movably arranged in the width direction at a position abutting on both corners of the upper surface of the work material. And a traveling base plate provided with an elliptical through hole at the center thereof and a traveling chain suspended between a driving wheel and a driven wheel. A material feeding device, a conversion device having a turntable for rotating a work material at one end of the material feeding device by 90 degrees about its longitudinal axis, and a grinding surface on both sides of the material feeding device. Are opposed to each other with the material feeding device interposed therebetween, and both corner edges of the upper surface of the processing material Grinding apparatus disposed at a position abutting the fine lower surface of the both corner edges, in which so as to constitute a chamfering grinding device and.

In the above-mentioned structure, the width determining device arranges width determining cylinders on both sides of a material feeding passage between a work material supply position and a work material changing position in a width direction with their cylinder rod tips facing each other. A position measuring device for measuring the distance from the reference position by contacting the detection end with the workpiece is provided at the tip of the cylinder rod of the width determining cylinder, and based on the detected distance, the lower edge grinding head and the upper edge grinding head Can be configured by determining the width position.

[0005] The above-mentioned conversion device includes an insertion hole formed substantially at the center of the traveling base plate which has reached the work material conversion position;
A rotating table arranged at a position corresponding to the upper and lower sides, a rotating motor for reciprocatingly rotating the rotating table by 90 degrees, an elevating device for elevating the rotating table, and elevating when the traveling base plate arrives at the work material conversion position. The device is raised to drive the turntable to the upper position after passing through the through hole of the traveling base plate, and furthermore, the rotating motor is driven at the upper position to rotate horizontally by 90 degrees, and then the lifting device is driven to lower. And control means for sequentially causing the operation to move to a position below the traveling base plate.

[0006]

A grinding device is provided adjacent to both sides of a work material feeding passage to grind opposing corner edges on an upper surface and a lower surface of the work material. After the four corners are ground at the same time, and after the material is transported, the material is rotated by 90 degrees about the longitudinal axis by a processing material conversion device provided at one end of the material feeding device. In this way, the vehicle travels backward to grind the unground corners. This makes it possible to grind the eight edges of the work material by reciprocating the work material once on the material feeding device.

In the case where the width determining device is configured as described above, the width between the lower edge grinding head and the upper edge grinding head is determined in accordance with the holding position of the work material, and the work material is properly adjusted. Width position. Therefore, even when the size of the work material is changed, the width is automatically determined and no manual work is required.

Further, in the case where the above-described conversion device is applied, if the turntable is positioned at an upper position after passing through the insertion hole of the travel base plate, the work material mounted on the travel base plate is temporarily rotated. When the workpiece is transferred to the upper position and further driven by a rotating motor at the upper position to rotate horizontally by 90 degrees and then descend, the work material becomes 9
It is turned by 0 degrees and is again supported on the traveling platform.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The grinding machine for chamfering according to the present invention comprises: a traveling base plate 11 on which a workpiece w is positioned and positioned in the front-rear direction by positioning pieces 14 provided at the front end thereof; Feeder 1 for freely moving the material
Is disposed at the front end of the material feeding passage s of the traveling base plate 11,
Conversion device 20 for rotating the work material w by 90 degrees
And lower edge grinding heads 30, 30 arranged on both sides of the material feeding passage s with their tread surfaces facing each other, and arranged so that the tread surfaces abut on both side edges of the lower surface of the workpiece w. An upper edge grinding head and 40, 40 arranged on both sides of the material feeding passage s, with their tread surfaces facing each other, and arranged so that the tread surfaces are in contact with the corners on both sides of the upper surface of the workpiece w. Have been.

The material feeding device 1 has a driving wheel 4 at one end and a driving wheel 4 at one end between mounting side plates 3 and 3 projecting from the upper surface of a base frame 2 long in the front-rear direction and spaced apart in the width direction. Each of the driven wheels 5 is supported, and a wheel shaft 6 which is a support shaft of the drive wheel 4 is connected to a reversible traveling motor 7 disposed near the driven wheel 5, and further fed to a chain tooth of the drive wheel 4 and the driven wheel 5. It is configured by bridging a material chain 8. Both ends of the material feeding chain 8 are fixed to the traveling base plate 11, and the reversible running motor 7 is driven to travel in the material feeding passage s.

On the upper surface of the pedestal frame 2, guide rails 10 are provided in parallel with the material feeding chain 8 on both outer sides thereof. The guide rails 10, 1
0 extends from the vicinity of the driving wheel 4 to the vicinity of the driven wheel 5, and the traveling base plate 11 is provided with sliding grooves 11a, 11a provided on the lower surface thereof as guide rails 10, 10.
And is supported so that it can run. By driving the reversible traveling motor 7, the traveling base plate 11 reciprocates along the material passage s while being supported by the guide rails 10, 10 following the traveling of the material chain 8. In the embodiment, the upper ends of the guide rails 10 and 10 are tapered, but the tips of the guide rails 10 and 10 are formed in a dovetail shape that extends upward, and the sliding grooves 11a and 11a are made to follow this, and the pedestal frame 2 is connected to the guide rails 10 and 10, If it is fitted from the front and rear ends of 10, it is possible to prevent upward disengagement during traveling.

At the center of the traveling base plate 11, there are shown FIGS.
An oval insertion hole 11b is formed as shown by a circle, and a cylinder frame 12 projects upward from the front end thereof. Then, the upper end of the cylinder frame 12 substantially coincides with the center of the traveling base plate 11 in the vertical direction,
The holding cylinder 13 is arranged, and the cylinder rod is moved up and down toward the table surface. Then, at the extension position of the cylinder rod, the pressure plate 13a fixed to the tip of the cylinder rod is pressed against the upper surface of the work material w placed on the traveling base plate 11, and the work material w is fixed as described later. I have to. The holding cylinder 13 constitutes an example of the holding device of the present invention. As a holding device for other processed materials, holding cylinders are provided on the traveling base plate 11 in front and rear,
Various configurations can be proposed, such as a configuration in which the processing material is sandwiched in the front-rear direction and a vacuum suction device provided on the upper surface of the traveling base plate 11.

On both sides of the cylinder frame 12, positioning pieces 14, 14 are provided on the traveling base plate 11, and at the supply position I of the work material w, the work material sent out from another adjacent machine. Receiving the leading edge of w, positioning in the front-back direction is performed. As described above, the positioning pieces 14, 14 automatically determine the front and rear positions when the workpiece is supplied at the supply position I, and are positioned by the pressure bonding plate 13a during the traveling. As in the case where 60 is applied, there is no problem even if the processed material is slightly shifted back and forth in the case of post-feeding.

Further, at a supply position I, a pressing plate 15 fixed to the tip of a cylinder rod 15b for positioning the workpiece w placed on the traveling base plate 11 in the width direction.
a, a width determining cylinder 1 for contacting both sides of the workpiece w
5 and 15 are arranged on the base frame 2. The position of the workpiece w is determined by the width determining cylinders 15 and the positioning pieces 14. That is, the width determining cylinders 15 and 15 constitute the width determining device of the present invention.

At the work material changing position II near the driven wheel 5 of the material feeding device 1, on both sides of the work material w placed on the traveling base plate 11 after the conversion work, the positioning of the work material w in the width direction is performed. To this end, width determining cylinders 19, 19 are arranged on the pedestal frame 2 so as to abut the crimping plate 19a fixed to the tip of the cylinder rod on both side surfaces of the workpiece w.
In addition, between the mounting side plates 3 and 3 of the pedestal frame 2, a conversion device 20 for the work material w is disposed. The conversion device 2
Reference numeral 0, as shown in FIGS. 4A and 4B, comprises a turntable 21 for rotating the work material w, and a drive device for rotating the worktable w and moving up and down. The driving device includes a rotary motor 22 for rotating the rotary table 21, a small gear 23 and a large gear 24 for transmitting the driving force of the rotary motor 22 to the rotary table 21, And a control means for sequentially driving the rotary motor 22 and the lifting / lowering device 25. In addition, the rotary table 21 is fixed to the upper end of a spline shaft 26 that is linked to the rotary motor 22 and the lifting device 25 in order to transmit the rotation and the lifting and lowering without any trouble.

That is, the spline shaft 26 can move up and down in the insertion hole 11b of the traveling base plate 11,
The large gear 24 is inserted through the center of a bearing 27 that supports the large gear 24, and receives the rotational force of the large gear 24 concentrically. Further, the lower end can be brought into contact with the cylinder rod 25a of the elevating device 25. When the cylinder rod 25a of the elevating device 25 is in the non-driving position as shown in FIG. 4A, the turntable 21 and the spline shaft 26 are supported on the large gear 24 by its own weight, and as shown in FIG. With the extension of the cylinder rod 25a by driving, the lower end of the spline shaft 26 is pushed up, and the spline shaft 26 rises while maintaining the mesh with the large gear 24 to push up the turntable 21. Thus, the turntable 2
1 moves up and down through the insertion hole 11b of the traveling base plate 11,
In the lowered position, it is controlled to be located below the traveling base plate 11 and in the ascended position to be located slightly above the upper surface of the traveling base plate 11.

The lower edge grinding heads 30, 30 are opposed to each other with a material feeding passage s of the material feeding device 1 therebetween. It is arranged so that a stepping force is applied in the direction of the center of the workpiece w at substantially the center position of the surface. That is, the treading pads 31, 31 are
The lower edge grinding heads 30 and 30 are arranged so as to be inclined so that the ends of the lower edge grinding heads 30 and 30 opposite to the treading pads 31 are directed downward.

The lower edge grinding heads 30, 30 are provided with a sanding frame 33 supported on an upper portion of a vertical frame 32.
The frame 33 is disposed so as to be inclined downward in the outward direction. A drive roller 34 having a rotation motor 37 is provided above the frame 33 at a lower end thereof, and the frame 33 is provided near the material feeding passage s. The treading pad 31 and driven rolls 35 at both sides thereof are arranged at the upper end located.
Then, the sanding belt 36 is wound around a belt driving mechanism composed of the driving roll 34 and the driven rolls 35, 35, and the work material w is
When it comes to the upper side, the sanding belt 36 is pressed.

[0019] The said lower edge grinding head 30 and 30, the instrumentation mount 38 for supporting the vertical frame 32 is supported in the width direction guide 39 provided on the pedestal frame 2, the motor M ₁ determines the width thereof widthwise position Positioning is performed arbitrarily by driving or rotating the handle 38.

The upper edge grinding heads 40, 40 have the same configuration as the lower edge grinding heads 30, 30, and a detailed description thereof will be omitted. This upper edge grinding head and 40,
The sanding frame 43 on which is mounted 40 is disposed so as to descend inward, and the tread pad 41 is located at the lower end of the frame 43 and is pressed against both corners of the upper surface of the workpiece w. I have. This upper edge grinding head and 40,4
Reference numeral 0 denotes a vertical frame 42 that supports the sanding frame 43 via a width guide 47 on a lift 46 fitted to a lift 45 formed on both outer surfaces of the mounting side plates 3 as shown in FIG. since There has been nono, by turning operation of the drive or handle 48 of the lifting motor M ₂ has a lifting controllable along the elevation guide 45, and even more times the width determined motor M ₃ of the drive or handle 49 The width position can be adjusted by a moving operation.

As described above, the vertical frames 32, 32 of the lower edge grinding heads 30, 30 can adjust the width position, and the upper edge grinding head and the vertical frames 42, 42 of the 40, 40 adjust the height position and the width position. Is possible, so that the grinding devices 30, 30, 40, and 4 correspond to the thickness and height of the workpiece w.
The height position of each treading pad of 0 can be easily changed, and it is possible to make pressure contact with the edge of the workpiece w.

As described above, the grinding heads 30, 3
In order to properly position the width positions of 0, 40, and 40 in accordance with the width of the workpiece, the width determination motor M ₁ is matched with the extension stroke of the cylinder rod of the width determination cylinders 15, 15 described above. , by controlling the driving of the M _3, it can be automatically positioned.

FIG. 5 shows a structure in which a position measuring device 70 is arranged on the rods 15b of the width determining cylinders 15, 15, and the width determining device will be described.

The rods 1 of the width determining cylinders 15, 15
A mounting member 71 is fixed to the tip of 5b. A detection piece 73 is fitted on the front part of the mounting member 71 via a spline 72, and the detection piece 73 is connected to the mounting member 71 by a spring pin 74. In addition, a crimping plate 15a is fitted to the end, and the tip is the detection end.
A proximity switch 75 is supported on the mounting member 71,
A shield plate 76 is provided on the detection piece 73 at a position facing the detection unit of the proximity switch 75. The mounting member 71 is also connected to a rod 79 of a detection cylinder 78 supported outside a support frame 77 of the width determining cylinders 15, 15.

The operation of the position measuring device 70 will be described. First, the workpiece w is placed on the traveling base plate 11, the width determining cylinders 15 and 15 are driven, the rod 15b is extended, and the detecting pieces 73 are brought into contact with both side surfaces of the workpiece w, respectively.
Due to such abutment, the ridge 72 expands and contracts, and the detecting piece 7
The third shield plate 76 approaches the proximity switch 75 side, and the proximity switch 75 is turned on. Therefore, the detection cylinder 7
The extension amount of the rod 79 is counted by a mechanism (not shown), but is counted up by turning on the proximity switch 75, and the extension amount is determined. As described above, by detecting the amount of extension of the rod 79, the height of the work material w at the point where the detection piece 73 abuts is specified. Thus, the width of the workpiece w is detected from the moving distance of the rod 79 of the detection cylinder 78 from the contracted position to the stop position.

The required rotation amount of the width determining motors M ₁ and M ₃ is determined based on the width information. Therefore, the width determining motors M ₁ and M ₃ are driven, the rotation amount is read as a pulse signal, a predetermined pulse is counted and digested, and the driving is stopped.

The position measuring device 70 having such a configuration can also be provided in the width determining cylinders 19, 19, and in this case, as described later, when the workpiece is not cubic, the grinding heads 30, 30 are used. , 40, 40 are used to readjust the width position corresponding to the width of the workpiece.

Next, the chamfering of the workpiece w in the above embodiment will be described. At the center of the traveling base plate 11,
As shown in FIGS. 1 and 2, an oval insertion hole 11b is formed, and a cylinder frame 12 is formed at the front end thereof to project upward. A holding cylinder 13 is disposed at the upper end of the cylinder frame 12 so as to substantially coincide with the center of the traveling base plate 11 in the vertical direction, and the cylinder rod is moved up and down toward the base surface. Then, at the extension position of the cylinder rod, the pressure plate 13a fixed to the tip of the cylinder rod is pressed against the upper surface of the work material w placed on the traveling base plate 11, and the work material w is fixed as described later. I have to. Positioning pieces 14, 14 are provided on the traveling base plate 11 on both sides of the cylinder frame 12, and are provided at a supply position I of the work material w for the work material w sent out from another adjacent machine. The front edge is received, and the positioning in the front-rear direction is performed.

In the state where the traveling base plate 11 is located at the supply position I, the work material w is placed on the traveling base plate 11 from another adjacent machine.
And the front edge thereof is received by the positioning pieces 14, 14, and the front-rear direction is determined. Then, the width determining cylinders 15, 15 are driven, and the crimping plates 15a, 15a fixed to the distal ends of the cylinder rods are brought into contact with both side surfaces of the workpiece w to perform positioning in the width direction. At this time, the grinding head 3 is
The width positions of 0, 30, 40, and 40 can also be properly positioned corresponding to the width of the workpiece w.

After the width position is determined, the holding cylinder 13 is driven, and the pressure plate 13a holds the workpiece w on the traveling base plate 11 from above. After this, the width determining cylinders 15, 15 are released from driving, and the cylinder rods are retracted.

After holding the workpiece w at the predetermined position on the traveling base plate 11 as described above, by driving the reversible traveling motor 7, the guide rail 1 follows the traveling of the material feeding chain 8.
While being supported by 0 and 10, the traveling base plate 11 is advanced in the material feeding path s. Accordingly, the upper and lower corners of both side surfaces are ground by the grinding heads 30, 30, 40 and 40, and the chamfer is performed. Will be applied.

Then, the traveling base plate 11 is moved to the work material changing position II.
, And the position is changed by the above-described conversion device 20. The operation of the conversion device 20 will be described. The work material w conveyed by the traveling base plate 11 arranged on the upper surface of the material feeding device 1 having the above configuration reaches the upper part of the conversion device 20. At this time, as described above, since the insertion hole 11b is formed in the lower surface of the traveling base plate 11, the turntable 21 is located immediately below the insertion hole 11b. Then, the driving of the holding cylinder 13 is released,
When the holding plate 13a is lifted to release its holding,
When the control means for sequentially driving the rotary motor 22 and the elevating device 25 is operated, the cylinder 25 of the conversion device 20 is driven, and the turntable 21 is raised, the workpiece w is moved to the traveling base plate 1.
1 is transferred to the turntable 21, and separates upward from the traveling base plate 11 as the turntable 21 rises.

Thereafter, the traveling base plate 11 is slightly moved in the forward direction so that the cylinder frame 12 and the positioning pieces 14, 14 do not hinder the rotation of the workpiece w. At this time, the insertion hole 11b has an oval shape, and allows a slight movement of the traveling base plate 11. After this movement, the rotation motor 22 of the conversion device 20 is driven to rotate the turntable 21 by 90 degrees. After the rotation, the elevating device 25 of the conversion device 20 is driven to lower the turntable 21 so that the workpiece w is supported by the traveling base plate 11. The control means of the conversion device 20 can be easily configured by using a limit switch that is mechanically turned on for each step drive of each device or by step drive control using a timer or the like. Description is omitted.

When the work material is transferred onto the traveling base plate 11 in this manner, the width determining cylinders 19, 19 disposed on both sides of the work material change position II are driven, and the pressure plates 19a,
19a is pressed against both side surfaces of the workpiece w to perform positioning in the width direction and temporarily hold the workpiece. At this time, by using the width determining cylinders 19 and 19 provided with the position measuring device 70,
As described above, the width positions of the grinding heads 30, 30, 40, and 40 are reset according to the width of the workpiece w.

In this state, the traveling base plate 11 is moved back to a predetermined position, and the positioning pieces 14, 14 are brought into contact with the front edge of the work material. At this contact position, the movement is stopped. . This stop control can be easily achieved by mounting a limit switch on the positioning pieces 14, 14, or the like. By this series of operations, even when the processing material is rectangular and the width and the front-back length of the processing material w change at the inverted position, the positioning can be optimally performed. Become. After the positioning is completed in this way, the holding cylinder 13 is driven to press the clamping plate 13a against the upper surface of the work material w to hold the work material w on the traveling base plate 11, and then the width determining cylinder Drives 19 and 19 are released.
By the above-mentioned conversion operation, the unground corners formed on the edges of the upper surface and the lower surface of the workpiece w are arranged at the grinding position.

By driving the reversible running motor 7 in the reverse direction, the traveling base plate 11 is supported by the guide rails 10 and 10 following the traveling of the material feeding chain 8 and the traveling platform 11 is moved in the material feeding path s.
With this, the upper and lower corners of both sides are ground by the grinding heads 30, 30, 40, 40 and chamfered. Thus, the chamfering of eight surfaces of the workpiece w is performed by one reciprocation of the traveling base plate 11.

In the case of chamfering 12 surfaces, after the reciprocation described above is completed, the surface is vertically rotated by 90 degrees, then run again to grind the remaining 4 surfaces, and returned without being rotated by the conversion device 20. You can do it. In this case, the grinding operation is performed only in the forward traveling, and it is not necessary to perform the grinding operation in the reverse traveling.

FIG. 6 shows another positioning device 50, 50 in place of the positioning pieces 14, 14. As shown in FIG.

The positioning devices 50, 50 are arranged in parallel at the front end of the traveling base plate 11, and are positioned at the tips of cylinder rods 52, 52 of the cylinders 51, 51.
Are arranged. In the positioning devices 50, 50 having this configuration, the positioning pieces 53, 53
Can be evacuated. For this reason, when rotating by the conversion device 20, it is not necessary to move the traveling base plate 11, and simply drive the cylinders 51, 51,
What is necessary is just to retract the positioning pieces 53, 53 to the position indicated by the chain line in FIG. The insertion hole 11b may be circular. still,
In the design of FIGS. 1 and 2, the cylinder frame 12 is in the way, but if this position is retracted, there is no problem.

In this configuration, it is not necessary to move the traveling base plate 11 in the forward direction after the workpiece w is raised by the turntable 21 as in the above-described embodiment. The mechanical control has the advantage that it can be performed quickly.

FIGS. 7A and 7B show still another positioning piece 6.
It indicates 0. The positioning pieces 60 are arranged in a row at the end of the traveling base plate 11 in the forward direction, and a holding plate 61 surrounding the positioning piece 60 is embedded in the upper surface of the traveling base plate 11, and screws are inserted from the upper surface. It is fixed using. A through hole 62 is formed in the center of the holding plate 61,
An upper portion of a rectangular positioning piece 60 having a convex cross section protrudes from the through hole 62. Also, the positioning piece 60
A spring 63 is disposed below the upper surface of the positioning piece 60, and an upper end of the spring 63 is in contact with a lower surface of the positioning piece 60.

The positioning piece 60 having the above-described configuration is used for positioning the workpiece w when the workpiece w before grinding is inserted into a sander. When the work material w is rotated by 90 degrees, the position of the work material w after the rotation is different from the position before the rotation as shown in FIG. 7B, and even if the work material w is mounted on the positioning piece 60 as shown by an arrow, Since the positioning piece 60 can be moved up and down by a spring 63 disposed below the positioning piece 60, the positioning piece 60 is lowered by the weight of the work material w and the pressing force of the pressing plate 13a, and the positioning piece 60 travels. The portion protruding from the surface of the base plate 11 is pushed down into the through hole. For this reason, there is no problem even if the shape of the processed material is a rectangular parallelepiped. Also in this case, it is not necessary to move the traveling base plate 11 in the forward direction.

[0043]

As described above, the grinding machine for chamfering according to the present invention mounts a work material on a traveling base plate and moves the traveling base plate forward on the material feeding passage, thereby forming the material feeding passage. The lower edge grinding head and the upper edge grinding head disposed adjacent to both sides of the upper surface grind the upper and lower corner edges, and then rotate the workpiece by 90 degrees, and then travel backward through the material feeding passage. Since the unground edges of the upper and lower surfaces of the workpiece are ground, eight round edges formed on the upper and lower surfaces of the workpiece can be ground by one round trip. It is possible to grind many workpieces in a short time,
This has the effect of increasing production efficiency.

As a width determining device, a width determining cylinder is provided on both sides of the material feeding passage, a position measuring device is provided on the cylinder rod, and the width between the lower edge grinding head and the upper edge grinding head is determined based on the detected distance. By applying the configuration that determines the position, the width between the lower edge grinding head and the upper edge grinding head is determined according to the holding position of the work material, and the work material is always at the appropriate width position. Therefore, even when the size of the work material is changed, the width is automatically determined, and there is an effect that manual work is not required.

Further, by using a conversion device that converts the workpiece by 90 degrees by raising and lowering the rotary table and rotating it by 90 degrees, the conversion operation of the workpiece can be performed automatically and properly. There is an excellent effect that is optimal for the above-described chamfering grinding device.

[Brief description of the drawings]

FIG. 1 is a plan view of a chamfering grinding device of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

4A is a vertical sectional side view showing the conversion device 20. FIG.

4B is a vertical sectional side view showing the operation of the conversion device 20. FIG.

FIG. 5 is a vertical sectional side view showing the position measuring device 70.

6 is a plan view showing the positioning device 50. FIG.

7A is a vertical sectional side view of the traveling base plate 11 showing the positioning piece 60. FIG.

7B is a vertical sectional side view of the traveling base plate 11 showing the operation of the positioning piece 60. FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 material feeding device 8 material feeding chain 10 guide rail 11 running base plate 11b insertion hole 13 holding cylinder 13a crimping plate 14 positioning piece 15 width determination cylinder 20 conversion device 21 turntable 22 rotation motor 25 elevating device 30, 30 lower edge grinding Head 31 Treading pad 40 Upper edge grinding head 41 Treading pad 50 Positioning device 60 Positioning piece 70 Position measuring device s Feeding path w Work material

Claims (3)

(57) [Claims] 1. A work material which is mounted on a guide rail disposed along a material feeding passage, and which has a holding device for holding the work material on its upper surface and holding the work material during its traveling. A traveling platform on which the vehicle is mounted, a width determining device for positioning a workpiece on the traveling platform in a width direction, and a material feeding passage formed by a traveling chain suspended between a driving wheel and a driven wheel. And a conversion device that is disposed at one end of the material passage and horizontally rotates the workpiece by 90 degrees about the longitudinal axis thereof. A lower edge grinding head movably arranged in the width direction at a position opposed to the material feeding device and abutting on both corner surfaces of the lower surface of the work material, and the grinding surface on both sides of the material feeding passage. The width direction is shifted to a position facing the work device and sandwiching both corners of the upper surface of the work material. Chamfering grinding apparatus characterized by being composed of a can-arranged upper edge grinding head. 2. A width determining cylinder is arranged on both sides of a material feeding path between a work material supply position and a work material change position in a width direction with its cylinder rod tip facing each other, and a detection end is brought into contact with the work material. A position measuring device for measuring the distance from the reference position is provided at the tip of the cylinder rod of the width determining cylinder, and the width positions of the lower edge grinding head and the upper edge grinding head are determined based on the detected distance. The chamfering grinding device according to claim 1, wherein the width determining device is configured. 3. The traveling base plate arriving at the work material conversion position,
An insertion hole formed substantially at the center thereof, a turntable disposed at a position corresponding to the top and bottom, a rotation motor for rotating the turntable back and forth by 90 degrees, an elevating device for moving the turntable up and down, When the plate arrives at the work material conversion position, the lifting device is driven up to move the turntable to the upper position by passing through the insertion hole of the traveling base plate, and the rotary motor is driven at the upper position to rotate 90 degrees horizontally. 2. A grinding machine for chamfering according to claim 1, wherein said converting device is constituted by a control means for successively causing an operation of lowering the lifting device by lowering the lifting device to a position below the traveling base plate.