JPH0632896B2 - Grinding device for rectangular frame - Google Patents

Description

The present invention relates to a grinding device for a rectangular frame, which grinds a rectangular frame-shaped processed material.

<Prior Art> Conventionally, as a method for grinding and polishing a rectangular frame-shaped processing material w as shown in FIG. 9, as shown in Japanese Patent Laid-Open No. 59-115155, it moves in the X direction. A controlled moving table and a planar sanding polishing unit, which is controlled to move in the Y direction, are installed vertically, and the polishing unit is movable along each side of the workpiece on the moving table, and the upper surface thereof is A structure that can be ground and polished has been proposed.

<Problems to be Solved by the Invention> In such a conventional configuration, the polishing unit is supported so as to be able to move up and down with respect to the transfer frame whose movement is controlled in the Y direction, and rotates around the connecting shaft. It is possible.

Therefore, there are the following problems.

As shown in FIG. 10, the grinding and polishing will be described by taking a processed material w formed by passing a Y side w ₂ between two X sides w ₁ as an example. , The connecting shaft is located at the center of each side of the processed material w, and grinding is performed,
It is customary to rotate by 90 ° after passing the corner, reposition and run for grinding, thereby grinding along the entire circumference of the processed material w.

Incidentally, in this case, since larger than the width of the treading pad p is the workpiece w, the travel start and end positions of the X-side portion w _1, as shown in 10 stamen, the Y side portion w ₂ Edge x
Are scraped off in the X direction, and the ground surface becomes defective. Further, there is a drawback that required repositioning is required at each corner, control is complicated, the traveling distance is long, and the processing time of the processed material w is long.

Further, in order to avoid grinding of the end portion x, as shown in FIG. 10B, a means for aligning the inner end of the tread pad p with the inner surface of the processed material w can be considered, but as shown in the right part of the figure. , After the grinding of the X side part w ₁ , it is at position B, centered on the connecting shaft 90
° rotated, it is necessary to further the inner end of trampling pads p re moved accurately corrected to the position C which coincides with the inner surface of the Y sides w _2, control becomes further cumbersome.

An object of the present invention is to provide a grinding device for a rectangular frame, which does not have the above-mentioned conventional drawbacks.

<Means for Solving Problems> According to the present invention, there are provided a holding table for holding a rectangular frame-shaped processed material such that each side thereof is along the X direction or the Y direction, and a rotation control and a lifting control. A transport head with a possible suspension part, an XY direction drive control mechanism that controls relative movement of the transport head in a two-dimensional direction with respect to a workpiece, and a sanding frame that supports a plurality of rolls including a drive roll, A sanding device is provided in which a sanding belt is stretched over the roll group, and a treading pad is arranged inside the sanding belt. It is supported via a width direction guide that moves and guides in a width direction orthogonal to the traveling direction, and one of the connecting body and the sanding frame has a width direction screw hole, and the other has a screw hole in the width direction. A plane provided with a screw rod to be screwed, and a movement adjusting device for displacing the sanding device in the width direction with respect to the transport head by guiding the width direction guide by the rotation operation of the screw rod. And a polishing unit for sanding.

<Operation> The rectangular frame-shaped processed material w is held by the holding table along the moving direction of the transport head. Further, the transport head holding the polishing unit is controlled to move in the X and Y directions with respect to the workpiece w by the XY direction drive control mechanism.

With the polishing unit held, the transport head is positioned at the corner of the workpiece w and lowered by the lifting mechanism,
The grinding surface of the polishing unit is pressed against the processed material w. Then, by moving in the X and Y directions, the desired surface is ground and polished along the respective sides.

In this step, as shown in FIG. 1, the connecting body a, which is the center of rotation of the polishing unit, is located on the extension line segment l that extends outward 45 degrees diagonally from the internal angle α of w. Let Then, since the sanding device can be moved in the width direction orthogonal to the running direction of the sanding belt by the movement adjusting device, the inner end e of the tread pad p is aligned with the inner surface f of the processed material w by this adjustment. Let

That is, when the tread pad p is arranged along the Y direction,
The inner end thereof is aligned with the inner side surface f of the X side portion w _{1 in} the Y direction. In this case, when the polishing unit is rotated 90 °, the inner end e of the tread pad p coincides with the inner side surface f of the Y side w _{2 in} the Y direction. Therefore, by rotating 90 ° at each corner, the tread pad p
Can be kept in an appropriate position and can be easily aligned. Therefore, by rotating the treading pad p at each corner and causing the connected body to travel along the frame of the work material w, the treading pad p causes the sanding belt to move to the work material w.
And the surface can be ground.

As described above, by using the above-described configuration, it is possible to adjust the position of the tread pad p.

<Example> An example of the present invention will be described with reference to the accompanying drawings.

2 to 4, 1 is a machine frame, and a rectangular peripheral frame 3 is arranged on the machine frame 1 by columns 2 standing upright at each corner. X-direction guides 4, 4 are provided on the upper surfaces of the two sides of the peripheral frame 3 in the X-direction, and guide racks 5, 5 whose lower surfaces are saw-tooth portions are fixed to the inner surfaces thereof.

On the base side of the machine frame 1, two guide frames 6, 6 are arranged in the X direction.
And a few sliding frames 7 between the guide frames 6 and 6.
However, both ends thereof are fitted on the guide frames 6 and 6 and are slidable in the X direction so as to be slidable in the X direction. Then, suction pad pieces 8 long in the X direction are slidably fitted on both sides of the sliding frame 7, and suction pad pieces 9 long in the Y direction are fixed to the central portion thereof.

The suction pad pieces 8 and 9 have the sliding frame 7 and the guide frame 6 respectively.
6. A rectangular frame body to be applied by sliding the suction pad piece 9 in the X direction by sliding it relative to 6, and sliding the suction pad piece 8 in the Y direction by sliding the suction pad piece 8 in the Y direction. Of the suction pad pieces 8 along the respective pieces w ₁ and w ₂ of the workpiece w in the shape of
9 are arranged and used as a holding table 10.

A transport frame 11 is supported on the peripheral frame 3. The carrying frame 11 is provided with a locking portion 1 from the rising end.
Reference numerals 4 and 14 are upwardly U-shaped and extend outwardly. The locking portions 14 and 14 are fitted to the X-direction guides 4 and 4, and further, one of the transport frames 11 is locked. Part 14
Pinions 16, 16 provided at both ends of a rotary shaft 15 which is driven and controlled by an X traveling motor M ₁ arranged above,
By engaging with the guide racks 5 and 5, movement control in the X direction can be performed by driving the X traveling motor M ₁ .

Further, the Y-direction guide 1 is mounted on the mounting surface of the transport frame 11.
7 and 17 are provided, and a transport head 18 is supported by the Y-direction guides 17 and 17 and hangs down from a Y-direction elongated hole 19 formed in the transport frame 11.

The structure of the transport head 18 will be described with reference to FIGS. 2 and 5. The support frame 20 mounted on the Y-direction guides 17, 17 has a pinion 21 provided on the drive shaft of the Y-travel motor M ₂ below. The pinion 21 is engaged with a rack 22 that is fixed in place and is provided on the transport frame 11 in the Y direction. Therefore, when the Y traveling motor M ₂ is driven, the transport head 18 moves in the Y direction in the elongated hole 19 along the Y direction guides 17, 17. A rotation motor M ₃ and a holding cylinder 23 are connected to the support frame 20. A rotary shaft 24 is provided in the holding cylinder 23, and a cylinder 27 of an elevating ram 26 that is interlocked only in the rotation direction with a key 25 is provided in the rotary cylinder 24. The lifting screw 28 that is linked to the drive shaft of the lifting motor M ₄ supported at the upper end of the
It is screwed to the center of. Further, a gear 29 is fixed to the outer circumference of the rotary cylinder 24, and the gear fixed to the drive shaft of the rotary motor M ₃ is meshed with the intermediate gear.

Thus Te, when the rotating motor M ₃ is driven, the rotation cylinder 24 is rotated via the gear 29. Then, this rotational force acts on the elevating ram 26 by the key 25 and causes the rotation thereof. When the lifting motor M ₄ rotates, the cylindrical body 2
7 is moved along the lifting screw 28 by the screwing action of the lifting screw 28, and the lifting ram 26 is lifted.

As shown in detail in FIG. 6, at the lower end of the cylindrical body 27 of the elevating ram 26, a C-shaped suspending portion 30 having an opening facing downward is provided, and an internal space thereof serves as a storing portion 32. Part 3
Locking pieces 33, 33 projecting oppositely are formed on both sides of the inlet of 2. In addition, in the suspension unit 30, the cylinder chamber 3
5, a piston 36 that moves up and down by air switching is arranged in the cylinder chamber 35, and a rod 37 of the piston 36 can be projected into the storage portion 32. A tapered surface 38 is formed on the peripheral edge of the rod 37.

A plurality of stations 4 are provided around the holding table 10.
1a, 41b, 41c are provided, and in addition to the planar sanding polishing unit 40a according to the present invention, other types of polishing units 40b, 40c are on standby.

The structure of each of the stations 41a to 41c will be described with reference to FIGS.

Reference numerals 42 and 42 denote delivery rails laid on the one side of the holding table 10 in the Y direction from the inside to the outside of the machine casing 1. The outside of the machine casing 1 is a standby position I and an inside. The delivery position is II. On the transfer rails 42, 42, a cart 43 is mounted and supported by its wheels 44. Further, a linking plate 45 is hung from the side of the carriage 43, and wheels 44 pivotally supported on the linking plate 45 are attached to the delivery rails 42, 42.
The lower surface of the carriage 43 is contacted to ensure stable running of the carriage 43. Further, a moving motor M is provided at the bottom of the machine casing 1.
₅ is attached to the sprocket 4 connected to its drive shaft
6 and the idle sprocket 47, 47 pivotally supported inside the delivery rails 42, 42, and the chain 48 is connected to the lower surface of the carriage 43 to drive the moving motor M ₅ . , Delivery truck 4 for bogie 43
The movement control is possible in the Y direction along 2, 42.

Further, the carriage 43 is provided with two articles 49, 49 standing upright. And each of the polishing units 40a-40
The c is supported by the mounting pieces 49, 49 and mounted on the carriage 43.

Next, the structure of the polishing unit 40a for flat sanding will be described with reference to FIGS. 7 and 8. The cylindrical connecting body 53 protruding upward is attached to the storage portion 32 of the elevating ram 26 and the locking piece 33 is provided. , 33 locking jaws 51, 5
The connecting jig 50 having the number 1 is fixed to the upper surface. As shown in FIG. 6, the connecting jig 50 has a recess having an inclined side surface 52 formed on the inner surface of the upper surface thereof.

Next, an embodiment of the movement adjusting device according to the present invention will be described. A sanding belt 6 to be described later is provided on the lower surface of the tubular connector 53.
A width direction guide 54 is provided for guiding the transfer in the width direction orthogonal to the traveling direction of 1, and the sanding frame 55 is slidably supported by the tubular connecting body 53 via the width direction guide 54. Then, the sanding frame 55 is inserted into the screw holes 56 in the width direction provided on the lower surface of the width direction guide 54.
When the handle 58 is screwed into the side-supported screw rod 57, the handle 58 can be rotated to move in the width direction by using the width direction guide 54 as a guide.

A large-diameter drive roll 59 and a small-diameter tension roll 60 are supported on the left and right of the sanding frame 55,
A sanding belt 61 is stretched around the roll. The drive roll 59 is driven by a drive motor M ₆ mounted on the sanding frame 55 via a chain transmission mechanism, and the sanding belt 61 travels.
Further, inside the sanding belt 61, an automatic lifting type tread pad 62 is arranged.
Is configured.

In the sanding device 63, by pressing the tread surface of the tread pad 62 against the sanding belt 61, the sanding belt 61 is pressed against the upper surface of the pressurizing material w, and grinding and polishing are performed by its running. Becomes The position of the pedaling pad 62 with respect to the connecting jig 50 is eccentrically controlled by rotating the handle 58 and using the widthwise guide 54 as a guide. Then, as will be described later, when the lifting ram 26 is rotated by this adjustment, the pedaling pad 62 is centrifugally rotated based on a predetermined radius.

Next, the operation of the apparatus of the above embodiment will be described.

First, the suction pad pieces 8 and 9 constituting the holding table 10
Is moved so as to correspond to each side of the rectangular frame-shaped processing material w to be applied, the processing material w is mounted on the holding table 10, and the X side w ₁ thereof is attached to the suction pad piece 9. It is held and fixed to the holding table 10 by holding the Y side w ₂ with the suction pad piece 8.

Next, in the station 41a of the polishing unit 40a, the moving motor M ₅ is driven to move the carriage 43 to the delivery rail 4
2, 42 along the Y direction to move the polishing unit 4
0a is moved from the standby position I to the inside of the delivery position II inside the machine casing 1.

Further, in the transport head 18, the rotation motor M ₃ is driven so that the locking pieces 33, 33 of the suspension portion 30 are along the Y direction, and the rotation motor M ₃ is driven to lower the suspension portion 30. In this position, the piston 36 is positioned above and the rod 37 is retracted from the storage portion 32.

Then, the X traveling motor M ₁ is driven to move the transport frame 11 along the X-direction guides 4 and 4, and the suspension unit 30 of the transport head 18 is moved to the station 41a.
In the Y direction with the locking jaws 51, 51 of the connecting jig 50 provided on the polishing unit 40a at the delivery position II. Further, the Y traveling motor M ₂ is driven to move the transport head 18 along the Y-direction guides 17, 17 so that the locking jaws 51, 51 of the connecting jig 50 are accommodated in the accommodating portion 32 of the hanging portion 30. House inside. Then re Tabi drives the lifting motor _{M 4,} raising the lifting ram 26 engages the locking jaws 51 and 51 in the engaging piece 33, the polishing unit 40a is floated, and moves down the piston 36 Tapered surface 3 of rod 37
8 is pressed against the inclined side surface 52 of the connecting jig 50 to hold the polishing unit 40a.

The movement control of the polishing unit 40a is performed as follows.

The axial center position of the connecting body 53 supported by the transport head 18 is determined by the driving amounts of the X traveling motor M ₁ and the Y traveling motor M ₂ with reference to the origin o in FIG.

Then, the transport head 18 is moved from the origin o to the upper left corner position of the processed material w held on the holding table 10. At this time, the axial center position of the connecting body 53 is located on a diagonal extension line l of 45 ° from the inner angle point α of the work material w, and the inner end e of the tread pad 62 is of the work material w. The handle 58 of the screw rod 57, which constitutes the movement adjusting device of the present invention, is rotated so as to be substantially coincident with the inner side surface f of the X side part w ₁ , whereby the pedaling pad 62 is displaced with respect to the connecting body 53. It is set at the position shown in Fig. 9B.

After setting such a position, the drive motor M ₆ is driven to drive the sanding belt 61, and then the lifting motor M ₄ is driven to lower the polishing unit 40a to move the tread pad 62.
Is pressed against the upper surface of the processed material w, and the X traveling motor M ₁ is driven to travel along the X side portion w ₁ of the processed material w. Then, at a position a ', which passes through the upper right corner position of the processed material w and reaches the position on the extension line segment 1 in the diagonal direction of 45 ° from the inner corner point α of the upper right corner, the axial center position of the connecting body 53. After stopping, the lifting motor M ₄ is driven again to raise the polishing unit 40a, and then the rotation motor M ₃ is driven to drive the sanding device 63.
Is rotated 90 ° clockwise to set the tread pad 62 to the position shown in FIG. At this time, the axial center position of the connecting body 53 is a diagonal position of 45 degrees of the processed material w, and the tread pad 6
2 is eccentric to the connecting body 53 by a predetermined amount,
Even in the position shown in FIG. 9B, the inner end eY of the tread pad 62 coincides with f on the inner side surface of the side w ₂ . Then, in order not to scrape off the X side part w ₁ of the processed material w, the processed material w
The width of the pad, and then move the pedaling pad 62 to the Y direction.
It is pressed against the side w ₂ . Further, the Y side portion w ₂
While traveling in pressure contact with the side, the right end of the X side part w ₁ rises before being ground, and the axial center position of the connecting body 53 is an extension line segment diagonally 45 ° from the inner angle point α of the lower right corner 45 °. It stops at the position b ′ when it reaches the position above. After that, the same position conversion and the traveling of the polishing unit 40a are performed to change the position c to the position c ',
By sequentially shifting from the position d to the position d ′, the upper surfaces of the side parts w ₁ and w ₂ of the processed material w are ground.

And further polishing unit 40a Right shifts back to the X-direction from the raised left position two 'a, when the axis of the coupling body 53 is turned to the side near the position of the intermediate sides w ₃ of the workpiece w, sanding device 63 By 180 ° counterclockwise so that the tread pad 62 is located at the position e across the intermediate side portion w ₃ and the width of the processed material w is adjusted so as not to scrape off the X side portion w ₁ of the processed material w. After moving in the Y direction, the sanding device 63
, The tread pad 62 is pressed against the intermediate side portion w ₃ to run, and the X side portion w ₁ is raised before being ground to move to the position h '
Stop at. Then, after being transferred to the transport head 18, the connecting body 53 returns to the origin o.

After this surface grinding process is completed, the polishing unit 40a is moved from the origin o to the station 41a by the transport head 18, and the delivery position II of the station 41a is transferred.
In the polishing unit 40a is lowered by driving the lifting motor _{M 4,} and Nono the polishing unit 40a on multiplication Nohen 49 of the carriage 43, connected jig 50 by the rod 37 to rise the piston 36 , The transport head 18 is moved in the Y direction again, and the polishing unit 40
Only a is left on the carriage 43. Then, the moving motor M ₅
Is driven to move the carriage 43 outward on the transfer rails 42, 42 to the standby position I.

Thereafter, if necessary, the transfer head 18 connects and moves the other polishing units 40b and 40c in the same manner as described above.

With such a configuration, it is possible to drive and control each of the motors M _{1 to} M ₆ by using the central control unit CPU, whereby the surface grinding of the workpiece w can be automatically performed.

In the above configuration, for example, the holding table 10 can be moved in the X direction and the transport head 18 can be moved in the Y direction. (See Japanese Patent Laid-Open No. 59-115155), the transport head 18 may be movable in the X and Y directions relative to the workpiece w.

When the polishing units 40b and 40c are not selectively connected by the transport head 18, the flat sanding polishing unit 40a can be fixed to the transport head 18.

<Effect of the Invention> As described above, according to the present invention, the sanding device 63 attached to the polishing unit 40a whose movement is controlled in the X direction and the Y direction by the transport head 18 is connected to the connecting body 53 by the movement adjusting device. On the other hand, eccentric movement control in the width direction is possible. Therefore, in the grinding process of the processed material w, the connecting body 53 is positioned on the extension line 1 extending diagonally from each internal angle point α by 45 °, and the tread pad 62 of the sanding device 63 is positioned. It becomes possible to match the inner edge e with the inner surface f of the processed material w, whereby the sanding device 63 is rotated by 90 ° at each corner, and the transport head 18 is moved up and down as required. By running along each of the side portions w ₁ and w ₂ , there is an excellent effect that the frame-shaped processed material w can be ground uniformly.

[Brief description of drawings]

FIG. 1 is an operation explanatory view of the present invention, FIG. 2 is a plan view of a grinding apparatus of one embodiment of the present invention, FIG. 3 is a front view of the same, and FIG. 4 is a side view of the same. Further, FIG. 5 is a partial vertical side view of the transport head 18, FIG. 6 is a vertical side view of the suspension portion 30, FIG. 7 is a front view of the polishing unit 40a, FIG. 8 is the same side view, and FIG. Is an explanatory view showing planar processing by the polishing unit 40a, and FIGS. 10A and 10B are explanatory views showing planar processing by a conventional apparatus. 4, 4; X-direction guide, 8, 9; suction pad piece, 10;
Holding table, 11; Conveying frame, 17, 17; Y direction guide, 18; Conveying head, 26; Lifting ram, 30;
Lifting unit, 40a; polishing unit, 41a; station, 50, connecting jig, 53, tubular connecting body, 54, widthwise guide, 55, sanding frame, 56, screw hole,
57; screw rod, 58; handle, 59, 60; roll,
61; sanding belt, 62; tread pad, 63;
Sanding device, M ₁ ; X traveling motor, M ₂ ; Y traveling motor, M ₃ ; Rotating motor, M ₄ ; Lifting motor, M ₅ ;
Moving motor, M ₆ ; Drive motor

Claims (2)

[Claims] 1. A conveyor provided with a holding table for holding a rectangular frame-shaped processed material so that each side thereof is along the X direction or the Y direction, and a suspending portion capable of rotating control and lifting control. An XY drive control mechanism that controls the relative movement of the head and transport head in the two-dimensional direction with respect to the work material, and a plurality of rolls, including drive rolls, are supported by the sanding frame, and a sanding belt is passed over the roll group. A sanding device having a treading pad arranged inside the sanding belt, the sanding frame is moved to a connecting body supported by a hanging portion of the transport head in a width direction orthogonal to a running direction of the sanding belt. A widthwise screw hole is supported on one side of the connecting body and the sanding frame, and a screw rod for screwing on the screw is provided on the other side of the connecting body and the sanding frame. And a planar sanding polishing unit provided with a movement adjusting device for displacing in the width direction with respect to the conveyance head by guiding the width direction guide by rotating the armature. The characteristic rectangular frame grinding machine. 2. A Y-direction guide is provided on a carrying frame whose X-Y direction drive control mechanism is controlled to move by an X traveling motor along an X-direction guide arranged above a holding table. 2. The grinding device for a rectangular frame according to claim 1, wherein the transport head is supported and the transport head is controlled to move along a Y direction guide by a Y traveling motor.