JPH065050Y2 - Deburring device for work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a deburring device for trimming a casting burr of a die cast product, for example.

(Prior Art) Conventionally, as a device for removing casting burrs formed on the peripheral portion of a light alloy mission case or the like formed by die-cast casting, one having a structure as shown in Japanese Utility Model Publication No. 57-32759 is known. Has been. In this device,
The casting is positioned on the pedestal of the lower die, and the upper die (elevator) that moves up and down so that it can move toward and away from the pedestal is lowered, and by the cutting blade integrally attached to the lower end side of the upper die. It is designed to trim casting burrs on castings.

(Problems to be solved by the invention) By the way, when the casting is to be positioned and placed on the lower pedestal as described above, the inner surface of the work should be positioned by the convex positioning guide portion provided on the pedestal. I have to. However, in order to easily set the work on the pedestal without causing a setting failure (such as tilting of the work) with an automatic machine, etc. Inevitably, a gap will be provided between the part and the work. When there is such a gap, the work placed on the pedestal is misaligned, and this misalignment varies depending on the variation of each work set. When the work is misaligned in this manner, there is a problem that a shaving phenomenon such as cutting to the product shape portion of the work or a cutting burrs residue occurs when trimming by the cutting edge.

In view of the above circumstances, the present invention adjusts the trimming position of the cutting edge divided into a plurality of parts according to the work position even if the work placed on the pedestal is misaligned to prevent the galling phenomenon and burrs. An object of the present invention is to provide a deburring device that prevents the occurrence of cutting residue and the like.

(Means for Solving the Problems) Therefore, according to the present invention, an elevating body that vertically moves so as to be able to come into contact with and separate from a pedestal, and a work placed on the pedestal can be brought into and out of contact with the lifting body And a plurality of supports each having a cutting edge on the lower end side, and a trimming position of each cutting edge that is attached to each of the supports and contacts the outer surface shape part of the work when the lifting body moves downward. And a biasing means for biasing each of the supports in a direction in which the guide means contacts the outer surface shape portion of the work.

(Operation) According to the deburring apparatus of the present invention, the guide means attached to each support member comes into contact with the outer surface shape portion of the work and moves along the shape portion when the lifting body moves downward in the trimming process. . At this time, each supporting member is moved outward by the lowering of the elevating body by each guide means against the urging force of each urging means. Further, when the downward movement of the lifting body progresses and each cutting edge descends to the position for trimming the casting burr, the moving position of each support is moved to the peripheral portion of the work by each guide means in contact with the outer surface shape portion of the work. The cutting burrs are set at positions corresponding to the casting burrs and the positions of the cutting burrs are adjusted to the roots of the casting burrs on the peripheral edge of the work, and only the casting burrs are surely trimmed by the cutting burrs.

Embodiment An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

1 to 3 are views showing the trimming state of the deburring device. The deburring device of the present invention will be described with reference to the drawings.
The work W is, for example, a transmission case made of a die-cast casting product, and has a casting burr A and a surplus portion for overflow formed on the peripheral edge thereof. 1 is work W
Is a lower die provided with a pedestal 2 for positioning and placing the work W on the pedestal 2 when the work W is supplied and set by an automatic machine not shown. A guide portion 2a is provided.

Reference numeral 3 denotes an elevating body (upper mold) arranged so as to be able to come in contact with and separate from the pedestal 2. The elevating body 3 is moved up and down by a driving device (not shown).

Reference numerals 4a to 4d denote supports provided along the peripheral edge of the work W (four in the embodiment), and each of the supports 4a to 4d.
The upper end side is swingably attached to the lifting / lowering body 3 by the support pin 5, and can be brought into contact with and separated from the work W placed on the pedestal 2 by the swing. In addition, each support 4
As shown in FIGS. 1 and 2, a to 4d are provided with cutting blades 6a to 6d, which are divided into four and are attached to those which are conventionally continuously and integrally arranged as shown in FIGS. is there. The cutting burrs A and the like of the work W are trimmed by these cutting edges 6a to 6d.

Reference numeral 7 is a support portion 3a provided on each of the supports 4a to 4d and the lifting body 3.
Is a spring as an urging means that is compressed between the supporting members 4a to 4d. The spring 7 is mounted on the outer periphery of the stopper pin 8 fixed to the supporting members 4a to 4d.
4d is urged toward the work W. The stopper pin 8 is loosely fitted in a through hole 9 provided in the support portion 3a of the lifting body 3, and a double lock nut 10 is screwed into the pin 8. The double lock nut 10 has a supporting portion 3
It abuts a and regulates the swing end position in the direction in which each of the supports 4a to 4d approaches the work W. It should be noted that by changing the screwing position of the double lock nut 10, each of the support members 4a ...
The swing end position of 4d can be changed.

Reference numeral 11 is a guide means attached to each of the support bodies 4a to 4d. Each guide means 11 is provided with a support pin 12 arranged in the work W direction and screwed into each of the support bodies 4a to 4d.
A lock nut 13 for preventing the support pin 12 from rotating,
The roller 14 is rotatably attached to the tip of the support pin 12. The roller 14 comes into contact with the outer surface shape portion of the work W during the downward movement of the lifting body 3 in the trimming process and swings the respective support bodies 4a to 4d, thereby cutting edges 6a to 6d when trimming the casting burr A. Are arranged so as to properly adjust the trimming position of.

Reference numeral 15 denotes a holding plate that presses the work W against the pedestal 2 side during trimming to restrict the movement of the work W. The holding plate 15 is attached to the elevating body 3 by a support pin 16 and a spring 17 is used. It is urged downward. 18
Is a stopper of the holding plate 15 attached to the lifting body 3.

Further, 19 is a limit switch attached to the lifting / lowering body 3, and a detector 19a of the limit switch 19 is inserted into a U-shaped recess 20 formed on the upper end side of the support 4c. Two limit switches 19 are provided corresponding to the supports 4c and 4d, and when the lifting body 3 moves down by a predetermined stroke, the swing range of each of the supports 4c and 4d swings beyond a proper range. This operation signal is sometimes activated to stop the downward movement of the lifting / lowering body 3 to stop the trimming of the casting burr A and to activate an abnormality indicator or an alarm device. That is, the limit switch 19 operates when a work W is tilted and set on the pedestal 2 and is set improperly to stop the trimming, thereby preventing damage to the work W or damage to the cut arrangements 6a to 6d. It is a thing. In addition, the defective setting of the work W is caused by at least the support 4c,
Since it is possible to reliably detect the movement of 4d, two limit switches 19 may be provided.

Next, the operation of the deburring device having the above configuration will be described.

First, the work W is supplied and set to the cradle 2 by an automatic machine.
At this time, as described above, since there is a gap between the positioning guide portion 2a of the pedestal 2 and the inner peripheral surface of the work W, the positioning and placement of the work W on the pedestal 2 is not stable, and a positional deviation occurs.

Next, the elevating body 3 is moved downward by the driving device, the pressing plate 15 presses the upper surface of the work W, and each roller 14 moves the work W.
It contacts the outer surface shaped portion of and rolls along the shaped portion. At this time, the supporting members 4a to 4d swing outwardly against the urging force of the springs 7 as the lifter 3 moves downward by the rollers 14. Further, the downward movement of the lifting body 3 advances, and each cutting edge 6a-6
At the time when d is lowered to the position where the casting burr A is trimmed, each roller 14 contacting the outer surface shape portion of the work W is
Thus, the swinging position of each of the supports 4a-4b is set to a position corresponding to the position of the casting burr A on the peripheral edge of the work W, and each cutting edge 6 is moved.
a to 6d are adjusted in position at the root of the casting burr A on the peripheral edge of the work W, and only the casting burr A (including the excess thickness portion) is used as each cutting edge 6a to 6d.
Will be surely trimmed.

When the trimming of the work W is completed, the lifting / lowering body 3 moves upward, and the supports 4a to 4d swing inward by the urging force of the spring 7 and return to the original position. Note that the work W is left on the pedestal 2 side because it is pressed downward by the pressing plate 15 when the lifting / lowering body 3 moves upward.

As described above, in the work W of the same type, since the positional relationship between the outer surface shape portion and the trimming position is always constant, each roller 14 of the guide means 11 contacts the outer surface shape portion of the work W in the trimming process. By doing so, the cutting edges 6a to 6d of the supports 4a to 4d can be adjusted to the trimming positions of the casting burr A, so that the galling phenomenon of the product shape portion and the cutting residue of the casting burr can be prevented.

At the time of trimming, as is clear from FIG. 2, a slight gap is formed between the cutting edges 6a to 6d. For the casting burr A within this gap range, the casting burr A in the vicinity thereof is formed.
(G) A phenomenon in which the cutting edges 6a to 6d are trimmed at the same time as the cutting edges 6a to 6d are broken, and almost no casting burr A remains in the gap range.

In the above embodiment, the application of sequentially trimming the works W of the same type is applied, but the present invention is not limited to this.
For example, the present invention can be applied to different kinds of works having substantially the same work shape but slightly different dimensions.

Further, although the spring 7 is used as the urging means in the above embodiment, the present invention is not limited to this, and each of the supports 4a to 4d may be urged by using, for example, a fluid pressure cylinder or the like.

In any case, the present invention is not limited to the above embodiments and may have any structure as long as it is within the technical scope of the configuration shown in the scope of claims for utility model registration.

(Effects of the Invention) According to the above invention, each cutting edge can be reliably positioned at the regular trimming position regardless of the position deviation of the work placed on the pedestal, and the product shape part of the work is cut. It is possible to surely prevent the galling phenomenon that occurs and also to prevent the cutting residue of the burr.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a vertical sectional view of a deburring device according to the present invention, and FIG.
A sectional view taken along the line II-II of FIG. 3, and FIG. 3 is a side view of FIG. 2 ... Cradle, 3 ... Elevator, 4a-4d ... Support, 6
a-6d ... Cutting edge, 11 ... Guide means, 7 ... Spring, W ... Work, A ... Cast burr.

Claims (1)

[Scope of utility model registration request] 1. A deburring device for trimming burrs formed on a peripheral portion of a work placed on a pedestal with a cutting blade, and an elevating body that moves up and down so that the pedestal can come in and out of contact with the pedestal. A plurality of supports provided on the body so as to be able to come into contact with and separate from the work placed on the pedestal, and each of which has a cutting edge at the lower end side; Guide means for adjusting the trimming position of each cutting edge by contacting the outer surface shape part of the work during movement, and biasing means for urging the respective support members in a direction in which the guide means contacts the outer surface shape part of the work. A deburring device for workpieces, which is characterized by being equipped.