JPH0966457A - Universal floating tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate tool exchange without subject to restriction of the size of the tool by having a tool unit cantileverly supported with a tool base of the tool unit joining the joining part and providing a turning means for turning the tool unit. SOLUTION: A set of air angle grinder tool unit is formed by integrating together an angle grinder, a counter weight 7, a tool base 6, a pipe 12 and an air tube 16. A copying operation is performed by pressing these tools against a work with certain pressure by virtue of turning the angle grinder and other tools by a rotary unit 3. Exchange is made by the tool base 6 and all, or in other words, the tool unit and all (for example, the air angle grinder tool unit is exchanged for an air spindle tool unit).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a universal floating tool.

[0002]

2. Description of the Related Art FIG. 6 is a partially broken plan view showing a floating tool according to the prior art. As shown in the figure, the air spindle 30 having the counterweight 34 is provided.
Is rotatably supported by two brackets 31a and 31b forming a gate shape via support shafts 32a and 32b, and one support shaft 32a is a vane type rotary for rotating the air spindle 30. The actuator 33 is coupled. In general, a method in which a tool is rotatable about a rotating shaft or movable about a moving shaft and a pressing force is applied to the tool by some power of a cylinder or the like is called floating.

[0003]

However, the floating tool according to the above-mentioned prior art has the following problems.

(1) Two gate-shaped brackets 31a, 3
Since the air spindle 30 is sandwiched between 1b,
When changing the tool, the mounting position is limited because the width cannot be changed, and in some cases, the counter weight may increase. (2) Due to the above structure, it is necessary to disassemble when exchanging tools, and the number of dedicated parts is increased, so that versatility is low. (3) Since the vane type rotary actuator is used to obtain the pressing force to the work, it is necessary to increase the area of the vane to increase the force, but the shape is square. The seals are special and difficult to change.

Therefore, in view of the above-mentioned prior art, the present invention aims to provide a universal floating tool in which the tool can be easily replaced without being restricted by the size of the tool and the pressing force to the work can be easily changed. And The universal means that the floating mechanism as described above is shared, and various tools can be used with minimal conversion of members.

[0006]

Means for Solving the Problems A first method for solving the above problems is described below.
Of the present invention, an air-driven tool integrally provided with a counterweight, a tool base having a passage for supporting the tool, and a tool base fixed to the tool base so as to be connected to one end side of the passage of the tool base. A tool unit integrally configured with a pipe, a tube connecting the other end of the passage and the tool, and a tool base of the tool unit is coupled to a coupling portion to support the tool unit in a cantilever manner. And a rotating means for rotating the tool unit.

A second aspect of the invention comprises an electric tool integrally provided with a counterweight, a tool base for supporting the tool and having a passage, and a cable connected to the tool through the passage. And a tool unit integrally configured with the tool unit, and a tool base of the tool unit, which is coupled to a coupling portion to support the tool unit in a cantilever manner and to rotate the tool unit. .

According to a third aspect of the present invention, in the first or second aspect of the invention, the rotating means has a passage for inserting a pipe or a cable of the tool unit in the central portion thereof, and a tool base of the tool unit. It is a rotary unit comprising a pinion to which a coupling part is coupled, and a rack cylinder having a piston provided on the outer peripheral surface of racks on both sides of the pinion, the racks meshing with the pinion respectively. .

A fourth invention is the above-mentioned first, second or third invention, wherein a diamond pin for positioning the tool unit is interposed between the connecting portion of the rotating means and the tool base of the tool unit. It is characterized by being set up.

A fifth aspect of the present invention is the first, second and third aspects as described above.
Alternatively, in the fourth aspect of the invention, a stopper receiver provided on the tool unit and a lock fixed to the main body side of the rotating means so that the stopper at the tip of the piston rod engages with the stopper receiver to fix the tool unit. And a cylinder.

Therefore, according to the first or second invention,
When changing tools, each tool base (that is, each tool unit)
Can be easily replaced. Further, since it has a cantilever structure, the size of the tool is not limited.

According to the third aspect of the invention, since the rotary unit of the rack and pinion structure is used as the rotating means, the linear force of the piston is converted into the rotational force by the pinion and the tool is pressed against the work. The pressing force at this time can be changed by changing the air pressure or the pistoid pressure receiving area.

According to the fourth aspect of the invention, the tool can be easily positioned by the diamond pin.

According to the fifth aspect of the invention, the tool is fixed (locked) at a predetermined position by the lock cylinder when heavy grinding or constant size cutting is performed.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 (a) is a side view showing a universal floating tool according to an embodiment of the present invention, which is equipped with an air angle grinder tool unit.
1B is a view in the direction of arrow A in FIG. 1A, FIG. 2 is a plan view of the universal floating tool shown in FIG.
FIG. 3A is a partially cutaway side view showing a rotary unit included in the universal floating tool shown in FIG. 1, and FIG. 3B is a sectional view of the rotary unit shown in FIG. 3A. .

As shown in FIGS. 1 and 2, the angle grinder 1, the counterweight 7, the tool base 6, the pipe 12 and the air tube 16 are integrally connected to each other to form a set of air angle grinder tools. The unit is configured. That is, the angle grinder 1 for processing a work by the electrodeposited diamond grindstone 2 is held by a counter weight 7 which also serves as a tool holding purpose, and the counter weight 7 is screwed to a tool base 6, and the tool base 6 A pipe 12 is screwed and fixed so as to be connected to one end side of a passage 6-1 formed in the tool base 6. The air tube 16 is provided with the joints 13-1 and 13-2 together with the passage 6-1.
And the other end of the angle grinder 1 is connected. In addition, the counterweight 7 can be divided into two by the axis center,
The base end of the angle grinder 1 is sandwiched by tightening these two with screws.

The tool base 6 of the air angle grinder tool unit is mounted on the table 5 fixed to the pinion 3-3 of the rotary unit 3 with the screw 20 and the screw 1 is attached.
It is fixed at 7. That is, the air angle grinder tool unit includes the rotary unit 3 through the table 5.
The cantilever is supported by the rotary unit 3
(The details will be described later). The tool base 6 and the table 5 are spigot-processed, and a diamond pin 16 is provided between the tool base 6 and the table 5 to position the air angle grinder tool unit (that is, the angle grinder 1). . Again pipe 1
2 is inserted into a passage 5-1 formed in the center of the table 5 and a passage 3-11 formed in the center of the pinion 3-3, and the rotary joint 11 is connected to the end portion thereof.
Reference numeral 11 in FIG. 1A is a through hole formed in the counterweight 7 for inserting a wrench for tightening the screw 17.

The unit body 31, which is the main body of the rotary unit 3, is fixed to the bracket 4 with a screw 21, and the bracket 4 is attached to the flange interface 14.
It is screwed to. In this embodiment, a universal floating tool is attached to the robot 15 via this flange interface.

A lock cylinder 8 is fixed to the flange interface 14 (that is, on the main body side of the rotary unit 3), and a stopper 9 is provided at the tip of the piston rod of the lock cylinder 8. on the other hand,
A stopper receiver 10 having a V-shaped groove 10-1 is fixed to the end of the tool base 6. Therefore, when the piston rod of the lock cylinder 8 is extended by the supply of air and the stopper 9-1 at the tip thereof is fitted into the groove 10-1 of the stopper receiver 10, the angle grinder 1 is moved by the wedge effect to an intermediate position in its rotation range. Fixed to. As a result, the angle grinder 1 is used in the same manner as a rigid (fixed tool that cannot rotate).

Here, the rotary unit 3 is shown in FIG.
This will be described in detail based on FIG. As shown in the figure, the pinion 3-3 is connected to the unit body 31 via the bearing 3-4.
It is rotatably supported by the pinion 3-3, and rack cylinders 3-2 and 3-12 are incorporated on both sides of the pinion 3-3. Rack cylinders 3-2, 3-12 pistons 3-
Racks 13-2b, 13 are provided on the outer peripheral surfaces of 2a, 3-12a.
-12b are formed on each of these racks 13-
2b and 13-12b mesh with the pinion 3-3.
That is, it has a so-called rack and pinion structure, and the linear force of the pistons 13-2a and 13-12a is applied to the pinion 3
Converted to rotational force by -3. Therefore, joint 3-8,
By sucking / exhausting air through 3-9, the pistons 3-2a and 3-12a operate to rotate the pinion 3-3 in the forward and reverse directions, which causes an air angle grinder tool around the central axis of the rotary unit 3. Rotate the unit (that is, the angle grinder 1).

The rotation angle of the pinion 3-3 is the stopper 3-
The stoppers 3-5, 3-15 can be adjusted by adjusting the in / out amount of the lock screws 3-6, 3-1.
It is fixed by 6. Rack cylinder 3-
2, 3-12 have a stepped structure, a seal structure,
Since the piston shape is also circular, it is easy to process, and since the cylinder seal can be used, the area selection range is wide. In FIG. 3A, 3-10 is an air passage and 3-7 is a cushion.

Then, similarly to the above-mentioned air angle grinder tool unit, a set of tool units is constructed with tools of other types. For example, an air spindle tool unit as shown in FIGS. 4 and 5 is configured. Since this air spindle tool unit has the same structure as the above air angle grinder tool unit, detailed description thereof will be omitted.
Counterweight 7'suitable for this air spindle 18
, A tool base 6, a pipe 12, and an air tube 16, which are integrally connected to each other. In addition, 19 in FIG. 4 is a diamond grindstone.

Therefore, according to the universal floating tool according to the present embodiment, by rotating the tools such as the angle grinder 1 by the rotary unit 3, these tools are pressed against the work with a constant pressure to perform the tracing operation. be able to.

When heavy grinding or constant-dimension cutting is desired, the tool of the lock cylinder 8 is extended by extending the piston of the lock cylinder 8 and fitting the stopper 9 at the tip of the piston into the groove 10-1 of the stopper receiver 10. It can be fixed at an intermediate position in the rotation range.

Further, since it is possible to replace the entire tool table 6, that is, the entire tool unit (for example, the air angle grinder tool unit and the air spindle tool unit are replaced), and the tool can be easily positioned by the diamond pin 16. The tools can be easily exchanged and the work can be easily set up when using a plurality of tools.

Since the counterweight and the tool are integrated (for example, the angle grinder 1 and the counterweight 7, the air spindle 8 and the counterweight 7 '), the optimum balance can be obtained without the trouble of adjustment. You can

Further, since it has a cantilever structure, the size of the tool is not limited, and various kinds of tools (each tool unit) can be attached.

Since the rotary unit 3 of the rack and pinion structure is used, the pressing pressure of the tool can be changed relatively easily by changing the air pressure or the piston pressure receiving area.

The air for driving the tool such as the angle grinder 1 is supplied to the rotary joint 11, the pinion 3-3 (passage 3-11) of the rotary unit 13, and the pipe 12 inserted through the table 5 (passage 5-1). Tool stand 6 (passage 6-
1), joint 13-1, air tube 16 and joint 1
Since it can be supplied to the tool through 3-2 in order, there is no risk of hindering the operation of the tool by the piping.

In the above embodiment, the case where the air-driven tool is used has been described, but it goes without saying that the present invention can be applied to an electric tool. In this case, the cable connected to the tool is the pinion 3-3 (passage 3-11) of the rotary unit 3, the table 5 (passage 5-1) and the tool base 6 (passage 6) as in the case of air for air driven tools. -1) is sequentially passed to be guided to the tool.

[0032]

As described above in detail with the embodiments of the present invention, according to the present invention, by rotating the tool by the rotating means, the tool is pressed against the work with a constant pressure to perform the following operation. be able to. Since the tools can be replaced together with the tool units without disassembling, the replacement work is easy, and the work setup is easy when using a plurality of tools. Since the counterweight and the tool are integrated, the optimum balance can be achieved without the need for adjustment. Since it has a cantilever structure, the size of the tool is not limited, and various types of tools (each tool unit) can be attached regardless of whether they are air-driven or electric.

By using the rotary unit of the rack and pinion structure as the rotating means, the pressing pressure of the tool can be changed relatively easily.

By providing the diamond pin, it is easy to position the tool when exchanging the tool.

By providing a lock cylinder and a stopper receiver, when it is desired to perform heavy grinding or constant size cutting,
The tool can be fixed.

[Brief description of drawings]

FIG. 1 (a) is a side view showing a universal floating tool according to an embodiment of the present invention, which is equipped with an air angle grinder tool unit, and FIG. 1 (b) is (a).
FIG.

FIG. 2 is a partially cutaway plan view of the universal floating tool shown in FIG.

3A is a partially cutaway side view showing a rotary unit included in the universal floating tool shown in FIG. 1, and FIG. 3B is a sectional view of the rotary unit shown in FIG.

FIG. 4 is a side view showing an air spindle tool unit.

FIG. 5 is a partially cutaway plan view showing an air spindle tool unit.

FIG. 6 is a partially broken plan view showing a floating tool according to the related art.

[Explanation of symbols]

 1 Angle Grinder 3 Rotary Unit 3-1 Unit Body 3-2, 3-12 Rack Cylinder 3-2a, 3-12a Piston 3-2b, 3-12b Rack 3-3 Pinion 3-11 Passage 5 Table 5-1 Passage 6 Tool Stand 6-1 Passage 7, 7'Counterweight 8 Lock Cylinder 9 Stopper 10 Stopper Receiver 10-1 Groove 12 Pipe 16 Diamond Pin 18 Air Spindle

Claims (5)

[Claims] 1. An air-driven tool integrally provided with a counterweight, a tool base for supporting the tool and having a passage, and fixed to the tool base so as to be connected to one end side of the passage of the tool base. A tool unit integrally configured with a pipe, a tube connecting the other end of the passage and the tool, and a tool base of the tool unit is coupled to a coupling portion to cantilever the tool unit. A universal floating tool, comprising: a rotating means for supporting and rotating the tool unit. 2. An electric tool integrally provided with a counterweight, a tool base for supporting the tool and having a passage, and a cable connected to the tool through the passage and integrally configured. A universal floating tool, comprising: a tool unit; and a tool base of the tool unit, which is coupled to a coupling portion to support the tool unit in a cantilever manner and to rotate the tool unit. 3. The universal floating tool according to claim 1 or 2, wherein the rotating means has a passage at the center for inserting a pipe or a cable of the tool unit, and a connecting portion to the tool base of the tool unit. Is a rotary unit including a pinion to which is connected and a rack cylinder having a piston provided on each side of the pinion and having a piston provided on an outer peripheral surface of a rack that meshes with the pinion. tool. 4. The universal floating tool according to claim 1, wherein a diamond pin for positioning the tool unit is provided between the coupling portion of the rotating means and the tool base of the tool unit. A universal floating tool featuring. 5. The universal floating tool according to claim 1, 2, 3 or 4, wherein a stopper receiver provided on the tool unit and a stopper at the tip of the piston rod engage with the stopper receiver to move the tool unit. A universal floating tool, comprising: a lock cylinder fixed to the main body side of the rotating means so as to be fixed.