JP2012101168A - Apparatus and method for removing chip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for removing chips by which the chips can be certainly removed by air blow in a short time without hand work and product yield can be improved.SOLUTION: The apparatus 1 for removing the chips is used for removing the chips remained inside a cylindrical work and is provided with a hollow shaft 12 which is rotated and driven by a driving source 16. The shaft 12 is formed so as to be able to be inserted inside the cylindrical work and further two or more jetting holes 12d for jetting compressed air supplied in the shaft 12 are formed and are arranged so that floating may arise in a radial direction when rotating.

Description

  The present invention relates to a chip removing device and a chip removing method, and more particularly, to a chip removing device and a chip removing method for removing chips remaining inside a cylindrical shape of a workpiece.

  A part exemplified in a caliper body for an automobile is generally cast by a casting method using cast iron, aluminum, or an aluminum alloy as a base material, and then subjected to a cutting process to form a concave groove (for example, a known seal groove). Boot grooves), known union holes and bleeder holes are formed.

  Conventionally, after the step of forming a concave groove or union hole in the cylinder hole is performed, chips accumulated in the hole (especially in the concave groove and union hole) are manually removed by air blow. It was. However, the problem is that the work efficiency is poor and the burden on the operator is large due to chips scattered around.

  Therefore, as described in Patent Document 1, as a device for removing chips inside a cylinder hole of a part exemplified in a caliper body, chips and foreign matter can be removed by compressed air (air blow) or a scraper. A removal device has been proposed.

JP-A 63-77633

  However, the apparatus as exemplified in Patent Document 1 cannot reproduce the movement of the operator's hand, and there is a problem that chip removal may be insufficient.

  In view of the above circumstances, an object of the present invention is to provide a chip removing device and a chip removing method that enable reliable removal of chips in a short time by air blow and that can improve yield, without manual operation. .

  As an embodiment, the above-described problem is solved by a solution as disclosed below.

The disclosed chip removal device includes a hollow shaft that is rotationally driven by a drive source in the chip removal device that removes the chips remaining in the cylindrical shape of the workpiece, and the shaft includes a cylindrical inner portion of the workpiece. And a plurality of ejection holes through which compressed air supplied into the shaft is ejected, and arranged so as to float in the radial direction during rotation. To do.
According to this, since the shaft floats when it starts a rotational movement, it can be reproduced like the movement of the operator's hand, and the chips in the workpiece can be removed by the compressed air sent out from the ejection hole. . Therefore, the removal work similar to the manual work by the operator can be mechanized. In addition, the burden on the operator is eliminated and safety is improved.

Further, the drive source includes an air cylinder, a rack is connected to the air cylinder, and the shaft is connected to a pinion gear engaged with the rack.
According to this, the linear motion of the air cylinder can be converted into the rotational motion by the mechanism including the rack and the pinion gear, and the shaft can be driven to rotate.

The ejection holes are penetrated at different angles.
According to this, since compressed air is injected from a different direction, there is no variation in air blow locations, and chips can be removed stably.

The workpiece is a caliper body of a disc brake, and the shaft is formed so as to be insertable into a cylinder hole of the caliper body, and faces a concave groove and a supply port formed in the cylinder hole. The ejection hole is formed at a position.
According to this, chips adhering to the inside of the cylinder hole of the caliper body, in particular, the boot groove, the seal groove, and the supply port can be reliably removed. Here, the supply port means a union hole or a bleeder hole.

Further, the disclosed chip removal method is a chip removal method for removing chips remaining in a cylindrical shape of a workpiece, wherein a hollow shaft is inserted into the cylindrical shape of the workpiece, and the shaft is radially arranged. Compressed air is ejected from the ejection hole provided in the shaft into the cylindrical interior of the workpiece while rotating so as to cause floating.
According to this, since the shaft moves while floating, it can be reproduced like the movement of the operator's hand, and the chips in the workpiece can be removed by the compressed air sent out from the ejection hole. . Therefore, the removal work similar to the manual work by the operator can be mechanized. In addition, the burden on the operator is eliminated and safety is improved.

  According to the disclosed chip removal device and chip removal method, the removal work similar to the manual work by the operator can be mechanized, so that the removal of the chips can be surely performed in a short time and the yield is improved. Therefore, it is possible to realize a chip removing device and a chip removing method that are safe for the operator.

It is the schematic which shows the example of the chip removal apparatus which concerns on embodiment of this invention. It is the schematic which shows the state which set the workpiece | work to the chip removal apparatus shown in FIG. It is an enlarged view (schematic figure) of the engaging part of the rack and pinion gear of the chip removal apparatus shown in FIG. It is explanatory drawing for demonstrating the floating of the shaft of the chip removal apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front perspective view (schematic diagram) showing an example of a chip removing device 1 according to the present embodiment. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments, and the repetitive description thereof may be omitted.

  A chip removing device 1 according to the present embodiment is a device that removes chips remaining in a cylindrical shape of a workpiece. What is assumed as the workpiece is a mechanical device part having a cylindrical inner part, and examples thereof include a caliper body having a cylinder hole which is a part of an automobile, a motorcycle, or the like. Here, FIG. 2 shows a schematic diagram of a state in which the workpiece (for example, caliper body) 50 is supported by the chip removal device 1.

  As shown in FIGS. 1 and 2, the chip removing device 1 according to the present embodiment includes a shaft 12 that is rotationally driven by a drive source on a flat base 10. In the present embodiment, the shaft 12 is erected on the base 10, and the shaft 12 is inserted into the cylindrical interior of the work 50 in which the opening of the cylindrical portion faces downward. As this action, most of the chips fall under the workpiece 50.

  Reference numeral 14 (14 </ b> A, 14 </ b> B) in the drawing is a support portion for supporting the workpiece 50, and may be formed in an appropriate shape according to the shape of the workpiece 50. For example, in the present embodiment, the two slide pin mounting portions 50c and 50d of the caliper body, which is the workpiece 50, are placed in the recesses 14Aa and 14Ba formed in the support portions 14A and 14B, respectively, so that the caliper body 50 is supported.

In this embodiment, an air cylinder 16 is provided as a drive source. A rack 18 is connected to the tip of the air cylinder 16, and a pinion gear 20 that is engaged with the rack 18 and rotates is provided on the base 10. The shaft 12 is connected to the pinion gear 20 and is rotatably supported. Here, FIG. 3 shows an enlarged view (back perspective view) of the engaging portion between the rack 18 and the pinion gear 20.
As an action, when the air cylinder 16 is driven, that is, slid, the rack 18 slides, the pinion gear 20 rotates, and the shaft 12 rotates. Since the operation of the air cylinder 16 is a reciprocating linear motion, the operation of the shaft 12 is a reciprocating rotational motion (repetitive motion of forward rotation and reverse rotation) within a predetermined angle range.

  The drive source is not limited to an air cylinder, and an electric motor or the like can be used as another example.

Here, the shaft 12 is formed in an outer shape that can be inserted into a cylindrical inside of the workpiece 50 (for example, inside the cylinder hole 50a of the caliper body 50). Further, the shaft 12 is formed in a hollow shape having a space inside, and a compressed air supply pipe (not shown) is connected to the connection port 12a so that the compressed air is supplied into the shaft 12. As an example, the shaft 12 has a cylindrical shape having an upper lid 12b. However, the shaft 12 is not limited to this, and may have a rectangular tube shape or the like.
If the compressed air supplied to the air cylinder 16 and the connection port 12a is supplied from a common compressed air source, the apparatus configuration can be made more efficient and simplified.

The shaft 12 is formed with a plurality of ejection holes 12d, 12d,... Through which compressed air supplied into the shaft 12 is ejected.
As this action, the chips inside the cylindrical shape of the workpiece 50 can be removed by ejecting the compressed air from the ejection holes 12d while the shaft 12 rotates.

  As an example, the plurality of ejection holes 12d, 12d,... Are provided in the upper lid 12b and the outer periphery 12c. In addition, although the position, the number, and the like of the ejection holes 12d can be appropriately changed, it is preferable that the opening directions are opened at different angles with respect to the axial direction. Thereby, since the jet direction of the compressed air jetted from the jet hole 12d changes with the rotation of the shaft 12, the effect of removing chips inside the cylindrical shape of the workpiece 50 can be enhanced.

  For example, when the workpiece 50 is a caliper body, the ejection holes 12d, 12d,... Are formed at positions facing the concave grooves (not shown) for the seal ring formed in the cylinder hole 50a and the union hole (50b). Is preferably formed. Thereby, the chips adhering in the concave groove and the union hole can be reliably removed.

Further, as a characteristic configuration of the present embodiment, the shaft 12 is arranged so that floating occurs in the radial direction during rotation. Here, as shown in the explanatory diagram of FIG. 4, the term “floating” means that when the shaft 12 rotates in the direction of arrow A, the upper part (or the whole) of the shaft swings in the radial direction (with the rotation). (B) (direction of arrow B).
As indicated by the broken line in the figure, when the shaft 12 rotates while floating, the ejection holes 12d, 12d,... Move not only in a reciprocal rotation in a fixed section but also in various trajectories. The solid line in the figure represents the reference position when the shaft 12 is a perfect circle and the center axis thereof coincides with the rotation axis of the pinion gear 20, that is, when the shaft 12 is assumed not to float. .

In order to cause floating when the shaft 12 rotates, for example, the shaft 12 that has been processed and formed without centering may be used.
As another example, the central axis of the cylindrical shaft 12 and the rotation axis of the pinion gear 20 to which the shaft 12 is connected do not coincide with each other (they are mutually angled or spaced apart from each other in the radial direction). Etc.).

  The shaft 12 having the above-described configuration rotates while floating, and an effect of ejecting compressed air from the ejection hole is obtained. As the ejection holes 12d, 12d,... Move along various trajectories, the compressed air ejected from the ejection holes 12d, 12d,... Therefore, it reaches every corner inside the cylindrical shape of the work 50. Thereby, the movement of the operator's hand can be mechanized and reproduced.

Then, the chip removal method using the chip removal apparatus 1 provided with the said structure is demonstrated.
First, a workpiece (for example, a caliper body) 50 is set in the chip removal device 1 (see FIG. 2). At this time, the shaft 12 is inserted into the cylindrical shape of the workpiece 50 (here, inside the cylinder hole 50a of the caliper body 50), and both ends of the workpiece 50 are supported by the support portions 14 (14A, 14B).

  Next, the air cylinder 16 is driven. More specifically, the compressed air is supplied to the air cylinder 16 to perform a reciprocating linear motion. As a result, the rack 18 connected to the air cylinder 16 performs a reciprocating linear motion. Thereby, the pinion gear 20 engaged with the rack 18 rotates (reciprocating rotational movement within a predetermined angle range). As a result, the shaft 12 connected to the pinion gear 20 rotates (reciprocating rotational movement within a predetermined angle range).

  At this time, the shaft 12 rotates while floating in the radial direction. At that time, the compressed air supplied to the shaft 12 is ejected from the ejection hole. The jetted compressed air is jetted everywhere up and down and left and right while being swung left and right by floating, so that it reaches every corner inside the cylindrical shape of the work 50. Thereby, chips inside the cylindrical shape of the workpiece 50 (here, inside the cylinder hole 50a) can be blown off and removed. Most of the removed chips fall under the work 50.

  As described above, according to the disclosed chip removal device and chip removal method, the shaft inserted into the cylindrical shape of the workpiece rotates while floating, and an effect of ejecting compressed air from the ejection hole is obtained. . Thereby, since the movement of the operator's hand can be reproduced, the chips inside the cylindrical shape of the workpiece can be reliably removed. Moreover, since the removal operation similar to the manual operation by the operator can be mechanized, the chip removal operation can be performed in a short time, and the burden on the operator is eliminated and the safety is improved.

  Thus, since the removal operation of the chips in the workpiece can be mechanized and the chips can be reliably removed, the yield can be greatly improved. In addition, the production line can be automated.

  Needless to say, the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the present invention. In particular, the caliper body has been described as an example of the work, but the work is not limited thereto.

DESCRIPTION OF SYMBOLS 1 Chip removal apparatus 10 Base 12 Shaft 14 Support part 16 Drive source (air cylinder)
18 rack 20 pinion gear 50 work

Claims (5)

In the chip removal device that removes the chips remaining in the cylindrical shape of the workpiece,
It has a hollow shaft that is rotationally driven by a drive source,
The shaft is formed so as to be insertable inside the cylindrical shape of the workpiece, and has a plurality of ejection holes through which compressed air supplied into the shaft is ejected, so that floating occurs in the radial direction during rotation. A chip removing device, characterized in that it is disposed in The chip removal apparatus according to claim 1,
As the drive source, an air cylinder is provided,
A rack is connected to the air cylinder,
The chip removing device, wherein the shaft is connected to a pinion gear engaged with the rack. In the chip removal apparatus of Claim 1 or Claim 2,
The chip removal device, wherein the ejection holes are penetrated at different angles. In the chip removal apparatus as described in any one of Claims 1-3,
The workpiece is a caliper body of a disc brake,
The shaft is formed so as to be insertable into a cylinder hole of the caliper body, and the ejection hole is formed at a position facing a concave groove and a supply port formed in the cylinder hole. Chip removal device to do. In the chip removal method for removing the chips remaining in the cylindrical shape of the workpiece,
Insert a hollow shaft into the cylindrical interior of the workpiece,
A method for removing chips, wherein compressed air is jetted into a cylindrical inside of the workpiece from a jet hole provided in the shaft while rotating the shaft so that floating occurs in a radial direction.

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