JPH0688197B2 - Grinding device for rectangular frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention is intended to grind a rectangular frame-shaped working material, and enables a plurality of working modes with a single device, thereby performing grinding and polishing. The present invention relates to a rectangular frame grinding device that can be optimally provided for automation.

<Prior Art> Conventionally, as a method for grinding and polishing a rectangular frame-shaped workpiece w as shown in FIG. 12, as shown in Japanese Patent Laid-Open No. 59-115155, it moves in the X direction. A controlled moving table and a polishing unit controlled to move in the Y direction are placed vertically, and the polishing unit can be moved along each side of the workpiece on the moving table, and the upper surface is ground and polished. Proposed configurations have been proposed.

<Problems to be Solved by the Invention> In such a conventional configuration, it is not possible to perform various types of grinding and polishing such as peripheral surface polishing unless the polishing unit is replaced.

However, since this replacement is not easy, it is necessary to provide a plurality of grinding devices in order to continuously perform several steps of grinding of the processed material on the rectangular frame, which is a large scale. In order to avoid this, in reality, the side surface polishing and chamfering processes have to rely on manual work.

It is an object of the present invention to provide a rectangular frame body grinding apparatus capable of performing several kinds of processing on a rectangular frame body processed material by one unit.

<Means for Solving Problems> The present invention provides a holding table that is provided on a machine frame and holds a rectangular frame-shaped processed material so that each side thereof is along the X direction or the Y direction. The carriage is movably mounted on a transfer rail laid between the inner transfer position and the outer standby position on the frame, and each polishing unit is supported by the carrier and held in standby. A station around the table and an X-direction motor that is controlled to move along an X-direction guide arranged above the holding table. The carrier frame is provided with a Y-direction guide and is supported by the carrier frame. Y along the Y direction guide
Movement is controlled by a traveling motor, and an elevating ram is housed in the up-down direction via a key in a vertically rotating cylinder that is rotationally controlled by a rotating motor, and is supported on the rotating cylinder. A vertical elevating screw fixed to the drive shaft of the elevating motor is screwed on the elevating ram, and the elevating ram is rotationally controlled by the driving of the rotating motor, and the elevating control is performed by the driving of the elevating motor. A transport head having a suspension portion provided at the lower end of the ram, and a plurality of polishing units provided at the upper portion with locking jaws that are retained by the suspension portion of the transport head. .

<Operation> The rectangular frame-shaped processed material is held by the holding table along the moving direction of the transport head. Further, the transport head supported by the transport frame and controlled to move in the X direction and the Y direction by the X traveling motor and the Y traveling motor has a plurality of polishing units required by connecting the suspending portion to the locking jaws. The unit is retained.

With the polishing unit held, the transport head is positioned at a corner of the workpiece and lowered by the elevating mechanism to press the ground surface of the polishing unit against the workpiece. And X
By moving in the Y direction, the required surface is ground and polished along each side.

The replacement of the polishing unit is performed by first moving the polishing unit held by the transfer head to a predetermined station, releasing the suspension part from the locking jaw of the polishing unit, and then moving the transfer head to another position by a moving guide mechanism. The polishing unit that has moved to the station of the polishing unit and is placed on the carriage at the station and is on standby is moved from the standby position on the transfer rail to the transfer position inside the machine frame, and the polishing unit is moved. The suspension jaws are linked to the locking jaws of and lifted, and again moved to a predetermined position of the processed material.

By appropriately selecting the polishing unit, it is possible to perform several types of grinding / polishing processing with one grinding device.

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

1-3, 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 surface is a saw tooth portion are fixed to the inner surfaces thereof.

Further, as shown in FIG. 1, two guide frames 6, 6 are provided in the X direction on the base side of the machine frame 1, and several slide frames 7 are provided between the guide frames 6, 6. However, both ends thereof are fitted on the guide frames 6 and 6 so as to be slidable in the X direction and passed over in the Y direction. And
Adsorption pad pieces 8 which are long in the X direction are slidably fitted on both sides of the sliding frame 7, and adsorption pad pieces 9 which are long in the Y direction are fixed to the central portion thereof.

The suction pad pieces 8 and 9 slide and slide the sliding frame 7 with respect to the guide frames 6 and 6 to adjust the movement of the suction pad pieces 9 in the X direction.
By sliding the suction pad piece 8 with respect to the sliding frame 7 and adjusting the movement in the Y direction, a rectangular frame-shaped workpiece w to be applied.
The suction pad pieces 8 and 9 are aligned along each side of the above, and these are used as a holding table 10.

A transport frame 11 is supported on the peripheral frame 3. The carrying frame 11 has locking portions 14 and 14 from the rising end.
Has an upward U-shape extending outward, and the locking portions 14 and 14 are fitted into the X-direction guides 4 and 4, and further on the one locking portion 14 of the transport frame 11. The pinions 16 and 16 provided at both ends of the rotary shaft 15 which is driven and controlled by the X traveling motor M ₁ are engaged with the guide racks 5 and 5, so that the X traveling motor M ₁ is driven. Directional movement control can be made.

Further, on the mounting surface of the transport frame 11, the Y-direction guides 17, 17
The Y-direction guides 17, 17 support the carrying head 18, and the Y-direction elongated hole 19 formed in the carrying frame 11
Hanging from.

The structure of the carrying head 18 will be described with reference to FIGS. 1 and 4, and the supporting frame 2 mounted on the Y-direction guides 17, 17 will be described.
At 0, the Y drive motor M ₂ has a pinion 2 mounted on its drive shaft.
A pinion 21 is engaged with a rack 22 which is fixed with the position 1 downward and is provided on the transfer 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. In addition, the support frame 20 has a rotation motor M ₃ and
The holding cylinder 23 is connected. The holding cylinder 23 is provided with a rotary cylinder 24, and the rotary cylinder 24 is provided with a cylinder 27 of an elevating ram 26 which is interlocked only by a key 25 in the rotation direction. An elevating screw 28 that is interlocked with the drive shaft of the elevating motor M ₄ supported on the upper end of 24 is screwed into the center of the cylindrical body 27. Further, a gear 29 is provided on the outer circumference of the rotating cylinder 24.
Is fixed, and the gear fixed to the drive shaft of the rotation motor M ₃ is meshed with the intermediate gear.

When the rotation motor M ₃ is driven, the rotation cylinder 24 rotates via the gear 29. Then, this rotational force acts on the elevating ram 26 by the key 25 and causes its rotation. When the lifting motor M ₄ rotates, the cylinder 27 moves up and down.
By the screwing action of 28, it moves along the raising / lowering screw 28 and raises / lowers the raising / lowering ram 26.

At the lower end of the tubular body 27 of the elevating ram 26, as shown in detail in FIG. 5, a U-shaped hanging portion 30 having an opening facing downward is provided, and an internal space thereof is used as a storage portion 32, and Locking pieces 33, 33 projecting in an opposed manner are formed on both sides of the entrance of the storage section 32.
Further, a cylinder chamber 35 is formed in the suspension portion 30, and a piston that moves up and down in the cylinder chamber 35 by switching air is used.
36 is provided so that the rod 37 thereof can project into the storage portion 32. A taper surface 38 is formed on the peripheral edge of the rod 37.

A plurality of stations 41a around the holding table 10,
41b, 41c are provided, and polishing units 40a, 40c are provided therein, respectively.
b, 40c are waiting.

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

42, 42 are delivery rails laid in the Y direction from the inside to the outside of the machine casing 1 on one side of the holding table 10. The outside of the machine casing 1 is the standby position I and the inside is the inside. Is the delivery position II. On the transfer rails 42, 42, a cart 43 is mounted and supported by its wheels 44. Further, a link plate 45 is hung from the side of the carriage 43, and a wheel pivotally supported on the link plate 45 is provided.
44 is brought into contact with the lower surfaces of the transfer rails 42, 42 to ensure stable running of the carriage 43. Furthermore, the machine frame 1
A moving motor M ₅ is attached to the lower part of the chain 48, and the chain 48 is hung between the sprocket 46 connected to the drive shaft of the moving motor and the idle sprocket 47, 47 pivotally supported inside the transfer rails 42, 42. Is connected to the lower surface of the carriage 43 so that the carriage 43 can be controlled to move in the Y direction along the delivery rails 42, 42 by driving the moving motor M ₅ .

Further, the carriage 43 is provided with two articles 49, 49 standing upright. The polishing units 40a to 40c are mounted on the loading piece 4
It is supported by 9,49 and mounted on a trolley 43.

Next, the structure of each polishing unit 40a-40c will be described.

First, the flat sanding polishing unit 40a will be described with reference to FIGS. 6 and 7, and a cylindrical connecting portion 53 protruding upward therefrom.
Is installed in the storage portion 32 of the lifting ram 26 and is a locking piece.
A connecting jig 50 having locking jaws 51, 51 locked to 33, 33 is fixed to the upper surface. As shown in FIG. 5, the connecting jig 50 has a recess formed on the upper surface thereof with an inclined side surface 52 formed on the inner periphery thereof. Further, a dovetail-shaped guide 54 is provided on the lower surface of the tubular connecting portion 53, and the tubular connecting portion is provided through the dovetail-shaped guide 54.
A body frame 55 is slidably supported by 53. Then, the body frame is attached to the screw receiver 56 provided on the lower surface of the dovetail-shaped guide 54.
By screwing the screw rod 57 supported on the 55 side, the handle 58 can be rotated in the width direction by using the dovetail-shaped 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 main body frame 55, and a sanding belt 61 is stretched around the roll. The drive roll 59 is driven by a drive motor M ₆ mounted on the body frame 55 through a chain conduction mechanism, and a sanding belt.
Produces 61 runs. Further, inside the sanding belt 61, an automatic lifting type treading pad 62 is arranged. By pressing the treading surface of the treading pad 62 against the sanding belt 61, the sanding belt 61 is pressed against the upper surface of the processed material w. Then, the grinding and polishing process is performed. The position of the pedaling pad 62 with respect to the connecting jig 50 is eccentrically controlled by rotating the handle 58 with the dovetail guide 54 as a guide. That is, as will be described later, when the lifting ram 26 is rotated by this adjustment, the tread pad 62
Will rotate centrifugally based on a predetermined radius.

Next, the side sanding polishing unit 40b will be described with reference to FIGS.

In the polishing unit 40b, both sides of a concave frame 70 having the connecting jig 50 on the upper surface are supported by the mounting pieces 49, 49, and one side of the concave frame 70 has a dovetail. The mounting plate 74 is mounted via the shape guide 73. The frame 70
In the dovetail-shaped guide 73, a screw rod 76 that is screwed into a screw receiver 75 provided on a mounting plate 74 is supported, and a handle 78 of the screw rod 76 is supported.
By rotating, the frame 70 and the mounting plate 74 can be moved in the relative width direction. An angle bearing 81 having an arc-shaped guide hole 80 is suspended from the mounting plate 74, and a connecting screw 82 fixed to the air motor M ₇ side is inserted into the guide hole 80. A molding wheel 83 having a polishing surface formed on its outer peripheral surface following the curved surface formed on the side surface of the processed material w is fixed to the drive shaft of the air motor M ₇ . Also air motor M ₇
Is held in the vertical and width directions by the ribs 84, 85, supports the shaft of the forming wheel 83 at a steady position, absorbs the impact generated during the polishing process, and elastically contacts the curved side surface of the processed material w by the elasticity. I am trying to get it.

In such a configuration, the forming wheel 83 can freely adjust its inclination angle by rotating the air motor M ₇ along the guide hole 80, and further, the handle 78 can be adjusted.
By adjusting the rotation of the forming jig 83, the position of the forming wheel 83 is eccentric with respect to the center position of the connecting jig 50, and it is possible to rotate the holding cylinder 23 with the amount of eccentricity as a radius. The grinding and polishing movement can be performed according to the curvature of the.

Further, as shown in FIGS. 10 and 11, the chamfering polishing unit 40c includes a drive shaft on the inclined side surface of a triangular main frame 91 having a connecting portion 90 provided with the connecting jig 50 fixed to the upper surface. The polishing motor M ₈ provided with a sanding wheel 92 is installed on the. In such a configuration, the main frame 91
It is fixed to the station 41c by supporting the locking pieces 93 protruding from both sides of the mounting pieces 49, 49.

Next, the apparatus of the embodiment is operated according to the following steps.

First step: Move the suction pad pieces 8 and 9 constituting the holding table 10 so that they can correspond to each side of the rectangular frame-shaped workpiece w to be applied, and place the workpiece w on the holding table 10. By mounting, the X side w ₁ is held by the suction pad piece 9 and the Y side w ₂ is held by the suction pad piece 8 so that the holding table 10 is fixed.

-Second step At the stations 41a to 41c of the required polishing units 40a to 40c, the moving motor M ₅ is driven to move the carriage 43 to the delivery rail 4
Move in the Y direction along 2, 42, and the polishing units 40a-4
0c is moved from the standby position I to the delivery position II inside the machine casing 1. In this case, the case where the polishing unit 40a is used will be described below.

In Third step carrying head 18, by driving the turning motor M _3, engaging pieces 33, 33 of the hanging portion 30 is set along the Y-direction, hung section drives the rotating motor M ₃ 30 is set to the lowered position, and the piston 36 is positioned above to retract the rod 37 from the storage section 32.

-Fourth step: The X traveling motor M ₁ is driven to move the carrying frame 11 along the X-direction guides 4 and 4, and the hanging portion 3 of the carrying head 18 is moved.
0 is made to coincide with the locking jaws 51, 51 of the connecting jig 50 provided in the polishing unit 40a at the delivery position II of the station 41a in the Y direction. Then, the Y traveling motor M ₂ is further 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 stored in the hanging portion 30. It is accommodated in the part 32. Next, the lifting motor M ₄ is driven again to raise the lifting ram 26 and the locking jaws 33, 33 are used to lock the jaw 5.
Lock 1,51, lift polishing unit 40a, and
6 is lowered to press the tapered surface 38 of the rod 37 against the inclined side surface 52 of the connecting jig 50 to hold the polishing unit 40a.

・ Fifth step As shown in FIG. 12, an X traveling motor M ₁ and a Y traveling motor
Drive M ₂ again to move the transport head 18 from the position of the origin o,
The processed material w held on the holding table 10 is moved to the corner edge position. At this time, the position of the lifting ram 26 is
The handle 58 is rotated so that it is positioned in an extension of the diagonal line 1 of 45 ° from the inner angle point a of the processed material w, and one end of the tread pad 62 substantially coincides with the inner edge of the side of the processed material w. The tread pad 62 to the position shown in FIG.

After setting the position, the drive motor M ₆ is driven to drive the sanding belt 61 in the X direction, and then the lifting motor M _{4 is} moved.
Is driven to lower the polishing unit 40a, press the tread pad 62 against the upper surface of the workpiece w, and drive the X travel motor M ₁ to cause the workpiece w to travel along the X side w ₁ . Then, after reaching the position a ′ beyond the processed material w, the lifting motor is again turned on.
By driving the M _4, from raising the polishing unit 40a,
Drive the rotation motor M ₃ to set the position to B. At this time, the elevating ram 26 has a diagonal line 1 of 45 ° from the internal angle α of the processed material w.
Since it is located above and eccentric to the lifting ram 26 by a predetermined amount, the side edge of the sanding belt 61 coincides with the inner edge of the Y side portion w ₂ . Then, after the X side portion w ₁ of the processed material w is not scraped off, it is moved in the Y direction by the width of the processed material w, and then the tread pad 62 is pressed against the Y side portion w ₂ to shift to position b ′. . This position control and traveling control are shown in FIG.
By carrying out also at the position between c'and ni ', the upper surface of each side portion w ₁ , w ₂ of the grinded material w is ground between the respective positions. Furthermore, in order to grind the intermediate side portion w ₃ , it shifts to the wheel ′,
Return to the origin o.

・ Sixth step Transfer head for polishing unit 40a to station 41a
The transfer position II of the station 41a
Then, the polishing unit 40a is lowered by driving the lifting motor M ₄ , the polishing unit 40a is mounted on the loading pieces 49, 49 of the carriage 43, the piston 36 is raised, and the connecting jig by the rod 37 is used.
The lock of 50 is released, the transport head 18 is again moved in the Y direction, and only the polishing unit 40a is left on the carriage 43. Then, the moving motor M ₅ is driven to move the carriage 43 outward on the delivery rails 42, 42 to the standby position I.

Seventh Step The connection and movement of the polishing unit 40b and the polishing unit 40c by the transport head 18 are performed in the same manner as described above.

Then, in the polishing unit 40b, it is transported to the transport head 18, and the molding wheel 83 is elastically brought into contact with the side surface of the processed material w.
The curved peripheral surface is ground and polished by being rotated by an air motor M ₇ . With this configuration, the forming wheel 83 can be eccentric with respect to the elevating ram 26 in accordance with the curvature of the inner and outer peripheral surfaces of the processed material w.
And the polishing unit 40b by moving in the Y direction.
Therefore, continuous grinding can be performed along the peripheral surface of the processed material w without moving up and down.

Further, in the polishing unit 40c, the sanding wheel 92 is rotated by the polishing motor M ₈ while being pressed against the corner edge of the processed material w, so that the inside and outside of the processed material w is rotated as shown in FIGS. It is possible to chamfer the corner edge x.

In the above configuration, the motors M ₁ ~M ₈ central control unit CPU
It is possible to control the drive by using, and by doing so, it is possible to continuously perform various types of grinding and polishing processing on the processed material w without manpower, and it is possible to use it for fully automatic grinding processing. Become.

<Effects of the Invention> As described above, according to the present invention, the polishing units 40a to 40c are moved from the standby position I of each of the stations 41a to 41c to the delivery position II so that the transport head 18 can be moved in the X direction and the Y direction. The transporting head 18 is provided with a hanging portion 30 that can be rotated and moved up and down, and the holding jaws 51 provided on the polishing units 40a to 40c can be held by the hanging portion 30 at the delivery position II. By selectively connecting the polishing units 40a to 40c at the standby positions I of the stations 41a to 41c to the transfer head 18, the required polishing units 40a to 40C can be arbitrarily moved and controlled. By selectively moving out the required polishing units 40a to 40C, the processing material w on the rectangular frame body fixed on the holding table 10 can be optionally processed in various modes. It has an excellent effect such as being optimal for the processing of material W .

[Brief description of drawings]

The attached drawings show an embodiment of the present invention. Fig. 1 is a plan view of a grinding machine, Fig. 2 is a front view of the same, and Fig. 3 is a side view of the same. Further, FIG. 4 is a partial vertical side view of the transport head 18, FIG.
The figure shows a vertical side view of the suspension section 30, and Fig. 6 shows the polishing unit 40a.
Front view, FIG. 7 is the same side view, and FIG. 8 is the polishing unit 40.
Front view of b, FIG. 9 is a side view of FIG. 9, and FIG. 10 is a polishing unit 4
0c is a front view, FIG. 11 is the same side view, and FIG. 12 is a polishing unit.
FIG. 13 is a plan view showing the planar processing of the processed material w by 40a, FIG. 13 is a vertical side view showing the planar processing of the processed material w by the polishing unit 40c, and FIGS. 14 and 15 are the same plan views. 4,4; X-direction guide, 8, 9; suction pad piece, 10; holding table, 11; transport frame, 17,17; Y-direction guide, 18; transport head, 26; lifting ram, 28; lifting screw, 30 ; Suspension part, 33; Locking piece, 36; Piston, 40a-40c; Polishing unit, 41a-41c;
Station, 42, 42; delivery rail, 43; trolley, 50; connecting jig, 51, 51; locking jaw, 54; dovetail guide, 59, 60; roll, 61;
Sanding belt, 62; Treading pad, 83; Molding wheel, 92; Sanding wheel, M ₁ ; X travel motor, M ₂ ; Y
Travel motor, M ₃ ; Rotation motor, M ₄ ; Lifting motor, M ₅ ; Moving motor

Claims (1)

[Claims] 1. A holding table, which is provided on a machine frame and holds a rectangular frame-shaped processed material so that each side thereof is along the X direction or the Y direction, and an inner transfer position on the machine frame. , A station around the holding table that supports the polishing units on the trolley to stand by by placing the trolley on the transfer rail laid outside to the standby position so that the trolley can be moved and controlled, and above the holding table. The movement is controlled by the X traveling motor along the X-direction guide disposed in the Y-direction guide, and the conveyance frame is provided with the Y-direction guide, and is supported by the conveyance frame.
Movement is controlled by a traveling motor, and an elevating ram is housed in the up-down direction via a key in a vertically rotating cylinder that is rotationally controlled by a rotating motor, and is supported on the rotating cylinder. A vertical elevating screw fixed to the drive shaft of the elevating motor is screwed on the elevating ram, and the elevating ram is rotationally controlled by the driving of the rotating motor, and the elevating control is performed by the driving of the elevating motor. A rectangular frame body comprising: a transport head having a suspension portion provided at a lower end of a ram; and a plurality of polishing units having an engaging jaw that is engaged with the suspension portion of the transport head at an upper portion thereof. Grinding machine.