JPH0236694Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotary grinding device for removing burrs and/or chamfering the edges of the teeth of a workpiece such as a machined gear. The present invention relates to a rotary grinding device that uses a wire brush or other brush to remove burrs and chamfer a workpiece.

As a gear deburring device using a wire brush, a device described in Japanese Patent Application Laid-Open No. 138523/1983 is known. This device is intended only for spur gears, and the teeth of the rotating spur gear are inserted between a pair of upper and lower wire brushes with the axial direction perpendicular to the axis of the spur gear. Since the edges of the teeth are scraped off with a tool, deburring does not require as much time and effort as a device that deburrs each tooth with a whetstone or cutter, but each wire of the wire brush is bent in the same direction. The problem is that it is inevitable that it will take a considerable amount of time for the burrs to separate because they are in continuous contact with the edge of the teeth and the burrs on all the teeth are simply sliding in one direction. There is.

The purpose of the present invention is to provide a rotary grinding device using brushes that solves the above-mentioned problems, and includes a workpiece support base that supports a workpiece rotatably around its axis on a bed. , Brush heads rotatably mounted on the left and right sides of the workpiece support base with wire brushes for deburring the workpiece so that the rotation directions of the brush heads are opposite to each other are disposed on the bed so as to be able to move forward and backward. The points are distinctive.

Embodiments of the present invention will be described below with reference to plan views.

FIG. 1 shows a front view of an embodiment of the device of the present invention.
FIG. 2 shows a side view and FIG. 3 shows a plan view.

A workpiece support 2 whose axis is perpendicular is arranged in the center on the bed 1, and brush heads 3 and 4 are respectively arranged on the left and right sides of the workpiece support 2. The workpiece support stand 2 is a horizontal two-piece parallel to each other extending from the front end to the rear end of the head 1.
It can freely move in the front and back direction using round book guide rails 5, 5 as a guide, and is provided with an inner diameter chuck 6 whose axis is perpendicular to the top.

On the other hand, the brush heads 3 and 4 have substantially the same structure with opposite directions, and each has a rotating shaft 7 at a position facing each other. The rotating shafts 7 are each powered and rotated by a dedicated motor 8. Further, the rotating shafts 7, 7 of both brush heads 3, 4 rotate in opposite directions with respect to the inner diameter chuck 6 by making the motor 8 rotate in the same direction. Furthermore, although the position where the axes are on the same horizontal line is the standard fixed position, the orientation can be changed by 30 degrees in either the vertical or horizontal directions. In addition, when a spur gear is used as a workpiece, it is tilted slightly vertically to improve grinding efficiency, but other than spur gears, helical gears, bevel gears, gears with special tooth shapes, sprocket wheels, chains, etc. When deburring and chamfering, or only deburring or chamfering a workpiece having tooth-shaped irregularities such as wheels, cams, etc., the vertical and horizontal directions must be changed according to the workpiece. A disc-shaped wire brush 9 of a desired diameter is attached to the inner end of each of the rotating shafts 7, 7 so as to be replaceable and detachable.

The wire brush 9 is brought into contact with the upwardly facing surface of two surfaces 10a and 10b that intersect with the axis of the workpiece 10, which is supported by the inner chuck 6 with its axis perpendicular.

4 to 6 show the brush head 3 on an enlarged scale, in FIG. 4 in a front view, in FIG. 5 in a side view, and in FIG. 6 in a top view.

It should be noted that since the brush head 3 and the brush head 4 have the same structure and are simply oriented in opposite directions, the explanation of the structure of the brush head 3, which will be explained next, will replace the explanation of the structure of the brush head 4.

The brush head 3 has a holder 12 that rotatably supports a rotating shaft 7. The holder 12 has a trunnion shaft 13 and stud bolts 14, 14 projecting from both sides. The trunnion shaft 13 supports the holder 12 on the brackets 15A, 15A of the swivel base 15, the stud bolts 14, 14 are inserted into the arcuate holes 16, 16 provided in the bracket 15A, and the nuts 17, 17 are inserted from the outside of the bracket 15A. It is possible to tighten the screws. That is, loosen the nuts 17, 17 and move the holder 12 vertically.
The structure is such that the direction can be changed within a range of 30 degrees, and the changed direction position is held by tightening nuts 17, 17.

The swivel base 15 is mounted on a swivel base support plate 19, which is mounted on a lift base 18 so as to be able to move freely in the left-right direction (that is, the direction in which the opposing gap between the rotating shafts 7 and 7 of the brush heads 3 and 4 increases and decreases). It is supported so that it can freely rotate horizontally around .

The swivel base 15 has an arcuate hole (not shown) in the seat plate 15B through which a plurality of stud bolts 21 installed in the swivel base support plate 19 are inserted.
After loosening the nut 22 that is screwed into the position and changing the orientation within a range of 30 degrees in the horizontal direction, the changing position is maintained by tightening the nut 22.

Next, a holder 12 that supports the rotating shaft 7, a swivel base 15 that supports the holder 12 so as to be rotatable in a vertical plane, and a swivel base 15 that supports the holder 12 so as to be rotatable horizontally around a center pin 20. The swivel base support plate 19 supported, and the lifting platform 1 that supported the swivel base support plate 19 movably in the left-right direction (that is, in the direction of changing the opposing gap between the rotating shafts 7, 7 of the brush heads 3, 4).
8, the brush heads 3, 4 have a lifting platform 18
The lifting and lowering operations of the bed 1 are performed using the handles 23 and 24 attached to the apron 1A of the bed 1, and the left and right movement of the swivel base support plate 19 is also carried out using the handles 23 and 24 attached to the apron 1A of the bed 1.
This is done by means of handles 25 and 26 attached to the. Each lifting platform 18 in the brush heads 3 and 4 has a columnar rack 27 on the underside, and these racks 2
7 is engaged with a pinion (not shown) attached to the inner end of each handle shaft 28 of the handles 23 and 24. Therefore, when the handles 23 and 24 are rotated, the elevating platforms 18 of the brush heads 3 and 4 are moved up and down, respectively, and the height of the rotating shaft 7, that is, the height of the wire brush 9 is adjusted. In this embodiment, the handles 23 and 24 are attached to the apron 1A.
When the platform 18 is rotated clockwise toward , the elevator platform 18 rises, and when it is rotated counterclockwise, the platform 18 descends.

The mechanism for horizontally moving the swivel support plate 19 is as follows:
In this embodiment, each handle shaft 29 of the handles 25 and 26 is connected to a universal joint 30.
(See Figures 3 and 6) A horizontal screw rod (none of which is shown) that is connected to a bevel gear (not shown) in the gear box 31 and fixes the bevel gear that meshes with this bevel gear. is supported on the elevating table 18 side with its axis perpendicular to the handle shaft 29, and the nut into which the threaded rod is screwed is fixed on the swivel table support plate 19 side, but instead of this, Other mechanisms may also be used.

In this embodiment, when the handles 25 and 26 are rotated clockwise toward the apron 1A, the swivel base support plate 19 moves to the right in FIG. 1, and when the handles 25 and 26 are rotated counterclockwise, it moves to the left. It's like this.
Moreover, groove pulleys 33 and 34 are fixed to the rotating shaft 7 and the output shaft 32 of the motor 8, respectively, and the structure is such that torque is transmitted by a belt 35.

On the other hand, the workpiece support stand 2 is connected to a rod 37 of a cylinder 36 fixed to the bed 1 side, and horizontal movement guided by guide rails 5 is achieved by supplying and discharging fluid pressure to the cylinder 36. It is freely available.

Next, the structure of the inner chuck 6 is shown in Figures 7 and 8.
This will be explained with reference to the figures. FIG. 7 shows an enlarged vertical sectional view of the inner chuck 6 with a workpiece 10 fixed thereto, and FIG. 8 shows an enlarged horizontal sectional view of the inner chuck. Note that the workpiece 10 shown in FIG.
These are longitudinal cross-sectional views of the left half and right half of the figure, respectively, in an inverted state. The chuck body 38 has a boss portion 38A and a flange portion 38B.
The lower part of A is formed into a threaded part 39, and the holder 4
It is removably attached to the joint 41 of No. 0 using a cap nut 42.

The boss portion 38A of the chuck body 38 has an outer diameter slightly smaller than the inner diameter of the boss portion 10A of the workpiece 10 (for example, a gear), and has a tapered member at the top that becomes smaller in diameter as it goes upward. A certain cap 43 is fixed. The outer diameter of the lower end of the cap 43 is formed to be the same as the outer diameter of the boss portion 38A of the chuck body 38, and the means for fixing it to the boss portion 38A is by using a plurality of bolts 44 (see Fig. 8). is fixed.

On the other hand, the flange portion 38B of the chuck body 38 has a continuous array of wall portions 45A that support the workpiece 10.
An attachment 45 having a shape is fixed by a screw 46 and a rotation stopper pin 47. Furthermore, radial guide holes 48 are provided in the boss portion 38A at positions facing the inner circumferential surface of the boss portion 10A of the workpiece 10, divided at equal angles of 90 degrees. Each guide hole 48 has a boss portion 10 of the workpiece 10 fitted into the boss portion 38A.
Clamp pins 49 are inserted into the inner circumferential surfaces of A, respectively, so that they can be press-contacted.

The clamp pin 49 has an outer end formed into a curved surface 49a having a curvature that contacts the inner peripheral surface of the boss portion 10A of the workpiece 10 as closely as possible, and an inner end formed into a beveled surface 49b having a predetermined angle. be.

Further, the clamp pin 49 is connected to the chuck body 3.
Support pin 5 inserted from the upper end surface 38a side of 8
It has an elongated hole 51 through which the number 0 passes through, and a center hole 52 bored from the curved surface 49a side of the outer end, and the elongated hole 51 and the center hole 52 are orthogonal to each other.

A spring receiving notch 50A is formed in the support pin 50 at a portion facing the elongated hole 51 and the center hole 52 on the side facing the center hole bottom 52a. A compression coil spring 5 is provided between the notch 50A and the center hole bottom 52a.
3 is interposed therebetween, and a sealing member 54 made of rubber or plastic that forms the same surface as the curved surface 49a of the clamp pin 49 is fitted into the mouth of the center hole 52.

The compression coil spring 53 is attached to the clamp pin 49
However, since the support pin 50 passes through the elongated hole 51, the clamp pin 4
The limit of inward retraction of the hole 9 is a position where the inner surface of the long hole 51 closer to the curved surface 49a abuts the support pin 50.

On the other hand, an operating rod 57 is inserted into the center hole 55 of the holder 40 and the center hole 56 of the chuck body 38. The upper end of the operating rod 57 has a beveled surface 57a that is in contact with the beveled surface 49b of the clamp pin 49 described above.
The holder 40 is rotated integrally with the holder 40 at a required speed.

The rotational drive mechanism for holder 40 and actuating rod 57 consists of a series of gear trains and a motor (both not shown) meshing with gears (not shown) concentrically fixed to the bottom of holder 40.

The operating rod 57 rotates together with the holder 40, but moves up and down within the holder 40 only when attaching and detaching the workpiece 10 to the chuck body 38. The vertical movement of the operating rod 57 is achieved by connecting a non-rotating lifting rod 58 (shown in FIG. 2), which is connected to the operating rod 57 in the holder 40 via a rotational support member (not shown) such as a thrust bearing, by a lever rod 59. This is possible by moving up and down. The lever rod 59 has one end connected to the lifting rod 58, and the other end connected to the hydraulic cylinder 60.
It is connected to the rod 61, and the center part is connected to the bed 1.
It is supported by horizontal pins 62 on the side fixing members.

The chuck body 38 is a dedicated member for each workpiece 10, and is inevitably replaced if the shape or size of the workpiece 10 changes. Exchange of the chuck body 38 is completed by removing the cap nut 42 from the holder 40 by removing the cap nut 42 downward from the male threaded portion 39 of the chuck body 38, and then tightening the cap nut 42 again with a new chuck body. Chuck body 38
In order to facilitate identification, a color mark 63 for identification is provided at the center of the top of the cap 43. Further, the cap 43 is provided with a hole 64 into which the heads of the four support pins 50 are fitted, and a convex portion 43A which is tightly fitted into the upper end of the center hole 56 at the center of the lower surface. Workpiece 1 relative to chuck body 38
0 is attached and detached by the manipulator 65.

The manipulator 65 has a finger 66A that can freely move up and down and rotate in reverse by 180 degrees at a position directly above the inner chuck 6 on the workpiece support stand 2 which has been moved to a fixed position near the apron 1A on the guide rails 5, 5. , 66B.

The fingers 66A, 66B are supported by a finger block 67 so as to be able to open and close freely, and the finger block 67 is rotated around a horizontal shaft 68 attached to the back.
Perform a 180° inversion rotation.

The rotational drive mechanism for the finger block 67 is a mechanism in which a rack that meshes with a pinion (not shown) fixed to a shaft 68 is moved forward and backward by a fluid pressure cylinder (both not shown). finger 66
The opening/closing drive mechanism of A and 66B is supported by a guide rod (not shown) so that both fingers can slide in the opening/closing direction, and racks oriented parallel to the guide rod are attached to the bases of both fingers. A driving pinion fixed coaxially with the driven pinion that meshes with each is provided with a gap, and a single rack that is placed between both driving pinions and meshes with both driving pinions at the same time is moved back and forth by a hydraulic cylinder. This mechanism rotates the drive pinion in opposite directions and moves the fingers 66A and 66B in opposite directions. finger 6
6A and 66B are driven up and down by moving finger locks that support these fingers to guide rails 69 and 69.
This is done by driving the fluid pressure cylinder 70 along the line. The operation of each part of the manipulator 65 employs an automatic method in which the position is detected by a proximity switch or the like.

The device of the present invention is covered with a hood 71 made of glass or plastic to avoid the danger of flying burrs and grinding powder. As shown in FIG. 1, the hood 71 is provided with an opening 72 for entering and exiting the workpiece, and a door that is closed during processing is attached to this opening.
A safety measure is taken to prevent the power circuit of the motor 8 from closing unless this door is closed.

Furthermore, an operation panel 73 is provided at the upper front of the hood 71.
The panel surface is exposed. On the operation panel 73,
As shown in the front view in FIG. 9, in addition to the operation button group 74 and display lamp group 75 for operating each part, the wire brushes 9, 9 in the brush heads 3, 4 can be moved up and down by rotating the handles 23, 24, respectively. ampere meters 76, 77 for indicating the brush current value to know when the wire brushes 9, 9 are worn out when the wire brushes are moved; and machining time settings used to control deburring or chamfering by machining time. A timer 78 and the like are provided.

In the device of the present invention having the above-mentioned configuration, the workpiece support 2 is moved to a fixed position near the apron 1A of the bed 1, and the workpiece 10 is mounted on the inner chuck 6 using the manipulator 65. do.

The workpiece support 2 with the workpiece 10 mounted thereon is moved to a fixed position between the brush heads 3 and 4, and the wire brushes 9 and 9 are brought into contact with the burr part of the workpiece 10 or the part to be chamfered. let

In this state, when the motors 8, 8 are started and the inner diameter chuck is rotated, the rotation direction of the motors 8, 8 is the same, but since they are facing each other,
The wire brushes 9, 9 contact the workpiece 10 with rotation in opposite directions. That is, for example, if there is a burr on the tooth edge of a gear cut with the workpiece 10, the two wire brushes 9,
9 comes into contact with the burr to bend it back and forth in opposite directions, and the burr, which has already been work-hardened, is broken off in an extremely short time. Further, the wire brushes 9, 9 effectively chamfer the tooth edges after removing burrs.

When one surface has been deburred and chamfered, the workpiece support 2 is returned to the position facing the manipulator 65, the manipulator 65 and the operating rod 57 are lowered, and the workpiece 10 is moved by the manipulator. After holding it in place and pulling it upward, it is turned 180 degrees and returned to the inner diameter chuck 6, and the operating rod 57 is pushed up to fix the workpiece 10.

The workpiece support base 2 supporting the inverted workpiece 10 is again moved between the brush heads 3 and 4, and operations such as deburring and chamfering are performed in the same manner as previously performed.

Incidentally, in order to enhance the effect of deburring and chamfering, or depending on the type of workpiece 10, the rotating shafts 7, 7 of the brush heads 3, 4 are tilted in the required directions vertically and horizontally.

As described above, the rotary grinding apparatus of the present invention has a workpiece support stand that rotatably supports the workpiece around its axis on the bed, and on the left and right sides of the workpiece support stand, A brush head, on which the wire brushes for deburring the workpiece are rotatably mounted so that the respective rotation directions are opposite to each other, is disposed on the bed so that the two wire brushes can move back and forth. Grinding can be performed by contacting the burr of the workpiece from the opposite direction and applying repeated bending action, which has the effect of greatly improving burr removal efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention, in which Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is an enlarged front view of the brush head, Fig. 5 is an enlarged side view, 6 is an enlarged plan view, FIG. 7 is an enlarged vertical sectional view of the inner chuck in a state in which a workpiece is fixed, FIG. 8 is an enlarged horizontal sectional view of the inner chuck, and FIG. 9 is a front view of the operation panel. 1... Bed, 1A... Apron, 2... Workpiece support stand, 3, 4... Brush head, 6... Inner diameter chuck, 7... Rotating shaft, 8... Motor, 9...
... wire brush, 10 ... workpiece, 65 ... manipulator.

Claims (1)

[Scope of utility model registration request] A workpiece support that supports the workpiece rotatably around its axis is placed on the bed, and wire brushes for deburring the workpiece are placed on the left and right sides of the workpiece support. A rotary grinding device characterized in that a brush head rotatably mounted so as to rotate in opposite directions is disposed on the bed so as to be movable forward and backward.