JPH04176507A - Flange deburring device for aluminum wheel - Google Patents

Abstract

PURPOSE:To precisely and rapidly eliminate burs produced on an aluminum wheel by moving a positioning means for positioning and holding a rim bur at a predetermined position toward a table, by bringing it into contact with the aluminum wheel and by determining a movement position. CONSTITUTION:An aluminum wheel 1 is supported by a chuck 14 by an air cylinder 15. An air cylinder 19 is operated, a bur clamp 18 is advanced, and a fixing stopper 37 is stopped at a point in contact with the aluminum wheel 1. When a solenoid for clamping bur clamp is excited, an air cylinder 20 is operated and a bur clamp claw 18d pinches a rim bur 4a at a predetermined position. A cutter 21 is advanced to a flange of the aluminum wheel 1 by an air cylinder 24. The cutter 21 is driven by a motor 26 through a power transmission part 25 and eliminates a flange bur of the aluminum wheel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cast burr removal device that removes cast burrs generated from casting of an aluminum wheel during the manufacturing process of aluminum wheels produced by casting.

[Conventional technology]

Aluminum wheels for automobiles and motorcycles, whose demand has been rapidly increasing in recent years, are mainly manufactured using casting methods such as gravity casting and low-pressure casting. The manufacturing process for aluminum wheels generally involves casting - cooling, removal of cast burr, cutting of the sprue and feeder, and lathe processing. Of these, removal of sludge and cutting of the sprue and feeder are performed to reduce the man-hours required for lathe processing. This is a necessary process.

FIG. 11 shows a longitudinal cross-sectional view of an aluminum wheel with cast burrs, and FIG. 12 shows a cross-sectional view taken along line A-A in FIG. 11.

Cast burrs usually occur on the flange portion 3 of the designed surface 2 of the aluminum wheel 1 and on the tire mounting surface 4. A flange burr 3a is formed on the entire periphery of the flange portion 3. Rim bulges 4a are generated on the tire mounting surface 4 at two locations 180° apart from the center axis of the aluminum wheel 1 due to the relationship with the mold.

Further, on the flange portion 3 on the opposite side to the design surface 2, there is an outer peripheral riser 5, and on the inside of the design surface 2, there is an inner riser 6.

The diameter of the flange portion 3 where the flange bulge 3a occurs varies widely because there are many sizes of aluminum wheels 1. Conventionally, this flange bulge 3a was removed manually using a grinder or the like.

(Problems to be Solved by the Invention) In the conventional technology as described above, cast burrs on aluminum wheels were manually removed using a grinder, etc., which was a major factor in increasing costs. ,
Various attempts have been made to automate this work using robots and NC equipment, but teaching the robot and programming the NC equipment takes a lot of time, the machining time is long, and the equipment is expensive. As of now, it has not been put into practical use. Therefore, there was a need for a cast burr removal device that has a simple structure and can handle aluminum wheels of all shapes and sizes.

The present invention can be applied to aluminum wheels of various external dimensions,
To provide a cast burr removal method and an automated flange burr removal device that accurately and quickly remove cast burrs generated on an aluminum wheel without requiring switching of Ni program.

[Means to solve the problem]

In order to solve the above problems, in the present invention, the flange portion 3 of the aluminum wheel 1 has a flange burr 3a extending in the radial direction with respect to the aluminum wheel shaft 7, and the aluminum wheel 1 is provided on the tire mounting surface 4 of the aluminum wheel 1. An aluminum wheel flange burr removal device 10 for removing a flange burr 3a of an aluminum wheel l having a rim burr 4a extending along an axis 7 direction includes a stand or roller 13 on which the aluminum wheel 1 is placed, and a roller 13 on which the aluminum wheel 1 is placed. 13, a means for adjusting the supporting force of the aluminum wheel 1 by the chuck 14, namely two two-position valves, and a positioning means for positioning and holding the rim burr 4a at a predetermined position. A means for moving the burr clamp 18 in the direction of the roller 13 , a moving means for moving the burr clamp 18 in the direction of the roller 13 , and a movement position of the burr clamp 18 by the air cylinder 19 in contact with the aluminum wheel 1 supported on the roller 13. a fixed stopper 37, a means for adjusting the movement of the air cylinder 19, two two-position valves, a force and burr 21 for removing the flange burr 3a, and a cutter drive for driving the cutter 21. source 26 and cutter 21
Rotating means 12 and 27 for rotating the aluminum wheel 1 along the circumference of the aluminum wheel 1 are provided.

[Effect]

In the present invention, the aluminum wheel flange burr removal device 10 is provided with a positioning means, that is, a cast burr clamp 18, for positioning and holding the rim burr 4a of the aluminum wheel 1 at a predetermined position, as described above, and further includes a burr clamp 18. Since the fixed stopper 37 for positioning the movement by the air cylinder 19 of 18 is provided, even when the temperature is high (even on a soft aluminum wheel, the hari clamp 18 does not pierce the aluminum wheel 1 and pinches the rim hari 4a,
The rim rim 4a of the aluminum wheel 1 is positioned at a predetermined position. Thereby, after the flange burr removal process of the flange burr removal device 10, the rim burr 4a of the aluminum wheel 1 transported to the rim burr removal device can be positioned at a predetermined position.

〔Example〕

Below, a flange burr removal device according to the present invention will be explained with reference to the drawings.

FIG. 9 is a plan view of the flange burr removal device 10;
The figure is a front view thereof.

A turntable 12 is installed on the stand 11 of the flange burr removing device 10, and a workpiece holder for placing the aluminum wheel 1 on the turntable 12 has four rollers 13.
There are one.

Two chucks 14 are provided on the stand 11 to support the aluminum wheel 1 placed on the roller 13 as a workpiece receiver. The chuck 14 has a workpiece receiving roller 1.
In order to support the aluminum wheel 1, the workpiece receiver can be moved in the direction of the roller 13 by an air cylinder 15. The two chucks 14 are synchronized in their movement in the direction of the rollers 13 by a geared shirt 16 and a chuck synchronization shaft 17. The chuck 14 can support the aluminum wheel 1 so that the aluminum wheel 1 can be rotated around the central axis 7 with a predetermined force or more.

On the stand 11, a casting edge clamp 18 is provided for positioning the rim edge 4a of the aluminum wheel 1 supported by the chuck 14 at a predetermined position. The cast burr clamp 18 can move the workpiece holder in the direction of the roller 13 by an air cylinder 19. Casting tension clamp 1
8 consists of two claws 18d, which can swing around a fulcrum 18a, and which are rotated by a gear 18b.
d can move synchronously. An air cylinder 20 is connected to one end 18c of the cast flash clamp 18,
Due to the movement of the air cylinder 20, the cast burr clamp 18 swings about the fulcrum 18a, and can grip the rim burr 4a with the clamp claw 18d.

On the turntable 12 are a cutter 21 and a stylus 2 for removing flange burrs 3a of the aluminum wheel 1.
A head portion 23 is provided to support 2. This head portion 23 can move the workpiece holder in the direction of the roller 13 by an air cylinder 24 . The cutter 21 is driven by a motor 26 via a power transmission section 25.

The turntable 12 is rotated around the device center axis 28 by a turntable motor 27.

The operation of the flange burr removal device 10 will be explained below.

First, aluminum wheels are manufactured through a casting process such as gravity casting or low-pressure casting, and are cooled after casting.

As shown in FIGS. 11 and 12, the cast aluminum wheel has casting flash, that is, a flange flash 3a, a rim flash 4a, an outer peripheral riser 5, and an inner riser 6.

The aluminum wheel 1 that has undergone the casting, water cooling, and sprue folding processes is carried by a loader (not shown) to the flange burr removal device 10, and the design surface 2 of the aluminum wheel 1 is transferred to the roller 13 of the flange burr removal device 10. Additionally, the rim stiffness 4a is supplied with a positional accuracy of approximately ±15'. The following operation is performed to position the rim stiffness 4a at a predetermined 0° position.

Referring to the timing chart of FIG. 7, first, it is confirmed whether or not the aluminum wheel 1 is on the roller 13 using a photoelectric switch (not shown). If it is, the pneumatic circuit shown in FIG. - Energize the tightening solenoid 30. As a result, the air cylinder 15 is driven and the chuck 14 supports the aluminum wheel 1 as shown in FIG. The chuck 14 has a structure in which it is sandwiched between two rollers 31 from the left and right sides, and because of the left and right synchronization and the alignment effect of the rollers 31, even if the chuck 14 is fed at a slightly shifted position, the center 7 of the aluminum wheel l and the center 28 of the device is easily matched.

Check the completion of chunk tightening with the timer, and move both solenoids 32.3 to advance the hari clamp a1.
3, the air cylinder 19 is activated, the burr clamp 18 moves forward, and stops when the clamp claw 18d hits the aluminum wheel l. The abutting force at this time is adjusted by a pressure reducing valve.

When the timer confirms that the Hari clamp 18 has been advanced and the solenoid 33 for the Hari clamp advances is demagnetized, the pressure on the Hari clamp advancement side of the air cylinder 19 is released to the atmosphere. Thereby, the hari clamp 18 can be moved back and forth with a small force. Confirm the completion of this burr clamp forward pressure release using the timer, and then press the burr clamp tightening solenoid 3.
4, the air cylinder 20 operates, and the burr clamp claw 18d slides on the tire mounting surface 4 of the aluminum wheel 1 while retracting itself, pinching the rim burr 4a within a range of ±15 degrees with respect to the predetermined position. and position it in the specified position. Completion of tightening of the tension clamp is confirmed by the limit switch 35.

The aluminum wheel 1 undergoes a water cooling process after casting, but the temperature of the aluminum wheel 1 only drops to about 506 to 60°C and is in a soft state, so the burr clamp claw 18d
When the rim tensioner 4a is clamped, the burr clamp claw 1
8d may pierce the tire mounting surface 4 of the aluminum wheel 1 and the positioning process may not go well.

For this reason, as shown in FIG.
A fixed stopper 37 was attached to 6.

Therefore, when the burr clamp 18 moves forward, the forward position of the burr clamp 18 is not determined by contact between the burr clamp pawl 18d and the tire mounting surface 4, but the fixed stopper 37 hits the tire mounting surface 4, and the burr clamp 18
The forward position of the can be determined. When the burr clamp 18 is tightened in this state, the rim burr 4a can be held and positioned without the burr clamp claw 18d touching the tire mounting surface 4 of the aluminum wheel 1. In other words, it is possible to prevent the clamp claw 18d from biting into the aluminum wheel 1 which is hot and soft.

However, if the fixed stopper 37 remains in contact with the aluminum wheel 1, it will be difficult to turn the aluminum wheel 1 when positioning the aluminum wheel 1, so it is necessary to release the vari-clamp forward pressure.

Furthermore, as shown in FIG. 5, if the aluminum wheel 1 is not a perfect circle and is pointed toward the sprue side, the force pushing back the chuck 14 due to the rotation of the aluminum wheel 1 is generated when positioning the rim burr 4a. It becomes necessary. However, since such force cannot be applied to the burr clamp 18, the rim burr 4a cannot be clamped and the rim burr 4a cannot be positioned. For this reason, in the process sequence of ■ Chuck tightening ■ Bali clamp advancement ■ Bali clamp advancement pressure release ■ Bali clamp tightening, between the process ■ and the process ■.
The chuck tightening pressure release process was performed, and after the process (2), the chuck tightening process was performed again.

The rim burr positioning operation when the above-described fixed stopper and chuck tightening pressure release process are provided will be described below with reference to FIGS. 1 to 3.

First, as shown in the timing chart of FIG. 2, it is confirmed whether or not the aluminum wheel 1 is placed on the roller 13 of the flange burr removing device 10 using a photoelectric switch (not shown). Both the chuck tightening solenoids 38 and 39 for chuck tightening a and chuck tightening shown in FIG. Chuck I4 is 2 from left and right
The aluminum wheel 1 is sandwiched between individual rollers 31, and because of the left and right synchronization and the alignment effect of the rollers 31, even if the aluminum wheel 1 is fed at a slightly deviated position, if the aluminum wheel 1 is a perfect circle, the aluminum wheel 1 can be easily Center 7 and flange burr removal device 1
The zero centers 28 coincide. However, if the aluminum wheel 1 is not a perfect circle, it will shift somewhat.

Confirm that the chuck has been tightened using the timer, and move both solenoids 32.3 and 32.3 to advance the vari clamp.
When 3 is excited, the air cylinder 19 is operated, the burr clamp 18 moves forward, and the fixed strike bar 37 stops at the place where it hits the aluminum wheel 1. The abutting force at this time is adjusted by a pressure reducing valve.

When the timer confirms that the hari clamp 18 has been advanced, and the solenoid 33 for advancing the hari clamp is demagnetized, the pressure on the hari clamp advancing side of the air cylinder 19 is released to the atmosphere. Thereby, even if the fixed stopper 37 is in contact with the aluminum wheel 1, it is not pressed against it, so that the aluminum wheel 1 can be rotated easily. Even if the aluminum wheel 1 is not a perfect circle but has a distorted circular shape with a sharp point on the sprue side, the aluminum wheel 1 can be easily rotated because the hari clamp 18 can be moved back and forth with a small force.

When the timer confirms that the forward pressure of the burr clamp is released, and the chuck tightening solenoid 39 is demagnetized, the chunk tightening pressure is released to the atmosphere.

Therefore, the chuck 14 can be moved with a small force, and even a lemon-shaped or oval aluminum wheel 1 can be easily turned.

When the timer confirms that the chuck tightening pressure has been released and the flex clamp tightening solenoid 34 is energized, the air cylinder 20 is activated and the burr clamp claw 18d is placed in a predetermined position without touching the tire mounting surface 4 of the aluminum wheel 1. On the other hand, the rim tension 4a within the range of ±15° is clamped at a predetermined O° position, and the tension clamp tightening completion limit switch 40 is turned on.

After turning on the limit switch 40, tighten the chuck again b
When the solenoid 39 is excited and the aluminum wheel 1 is chucked, the center 7 of the aluminum wheel 1 and the center 28 of the flange burr removal device 10 are aligned again, and the positioning of the rim burr 4a is completed. However, if the aluminum wheel 1 is not a perfect circle, the center 7 of the aluminum wheel 1 and the center 28 of the device 10
is slightly off.

In the pneumatic circuit shown in Figure 3, a 3-position valve can also have the function of releasing pressure, but since it is difficult to adjust the speed, two 2-position valves are used to perform the same function. It makes it easier to do. In this way, the workpiece holder of the aluminum wheel 1 is fixed on the roller 13 by the chuck 14 and cast flash clamp 18.

Next, the cutter 21 is advanced to the flange portion 3 of the aluminum wheel 1 by the air cylinder 24. The cutter 21 is driven by a motor 26 via a power transmission section 25 to remove the flange burr 3a of the aluminum wheel 1. At this time,
Since the turntable 12 is rotated by the motor 27,
The cutter 21 rotates around the aluminum wheel 1 and removes Fransiba') 3a. The cutter 21 moves forward while rotating around the aluminum wheel 1 until the stylus 22 comes into contact with the flange portion 3, thereby being able to accurately remove the flange burr 3a.゛Flange burr 3
After the part a is removed, the cutter 21, chuck 14, and cast burr clamp 18 are moved back, and a loader (not shown)
The aluminum wheel 1 is transported to a rim burr removal device. The rim burr 4a of the aluminum wheel 1 is removed by the cast burr chuck 18.
Therefore, when the rim burr 4a is transported to the rim burr removing device by a loader, the rim burr 4a is positioned at a predetermined position in the rim burr removing device.

Although the embodiments of the aluminum wheel flange burr removal device according to the present invention have been described above with reference to the drawings, the present invention should not be construed as being limited to the above embodiments, and within the scope of the invention. It goes without saying that changes and improvements can be made as appropriate.

〔Effect of the invention〕

As described above, according to the present invention, even when the temperature of the aluminum wheel is high and soft, the rim burr of the aluminum wheel can be positioned without the hari clamp penetrating the aluminum wheel, and cast burrs of various aluminum wheels of different sizes can be positioned. can be removed accurately.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the positioning of rim burrs on an aluminum wheel by the flange burr removal device of the present invention, FIG. 2 is a timing chart of the flange burr removal device of the present invention, and FIG. 3 is a flange burr removal device of the present invention. A pneumatic circuit diagram of the removal device. Figure 4 is an explanatory diagram showing the positioning of the rim rim of a perfectly round aluminum wheel. Figure 5 is an explanation showing how to solve problems caused by aluminum wheels that are not perfectly round. 6 is an explanatory diagram showing the positioning of the rim burr on an aluminum wheel by the flange burr removal device of another embodiment, FIG. 7 is its timing chart, FIG. 8 is its pneumatic circuit diagram, and FIG. The figures are a plan view of the flange burr removal device, Fig. 1O is a front view of a partial cross section of the flange burr removal device, Fig. 11 is a longitudinal cross-sectional view of an aluminum wheel with cast flanges, and Fig. 12 is a FIG. 12 is a cross-sectional view along line A-A of FIG. 11; [Explanation of symbols of main parts] 12... Turntable 13... Roller 14... Chuck 15... Air cylinder 18... Cast burr clamp 19... Air cylinder 21... Cutter 27... ...Motor 32...Vari clamp advance misolenoid 33...Hari clamp advance b solenoid 37...Fixed stopper 38...a solenoid with chuck II 39...b solenoid with chuck m

Claims (1)

[Claims] 1. A flange portion of the aluminum wheel has a flange burr that extends in a radial direction with respect to the aluminum wheel axis, and a rim burr that extends in the axial direction of the aluminum wheel on the tire mounting surface of the aluminum wheel. A flange burr removal device for an aluminum wheel for removing the flange burr of the aluminum wheel, comprising: a stand on which the aluminum wheel is placed; a support means for supporting the aluminum wheel on the stand; and the support means. means for adjusting the supporting force of the aluminum wheel; positioning means for positioning and holding the rim burr in a predetermined position; moving means for moving the positioning means toward the table; a stop means for positioning the moving position of the positioning means by the moving means by coming into contact with a supported aluminum wheel; a means for adjusting the movement of the moving means; a cutter for removing the flange burr; A flange burr removal device for an aluminum wheel, comprising: a cutter drive source that drives a cutter; and a rotation means that rotates the cutter around the aluminum wheel.