Workpiece holding jig

Abstract

To provide a novel workpiece holding jig that eliminates the need of directly holding various workpieces by hand but can perform buffing safely.SOLUTION: A workpiece holding jig used in pressing a workpiece 1 onto a buff part of a buff polishing device includes: a handle part 2 gripped by an operator; a holding part 3 installed in a tip of the handle part 2 so as to be rotatable to hold the workpiece 1; and a suction mechanism for sucking the workpiece 1 to the holding part 3.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a workpiece holding jig used when pressing a workpiece against a buffing portion of a buffing machine. [Background technology]

[0002] Buffing, which is used in the finishing process of stainless steel products, is usually performed by the worker directly pressing the workpiece against the rotating buff part (a buff wheel made of cotton or felt) of a buffing device (buff race).

[0003] However, when buffing small products the size of a fist, it is anticipated that fingers may get caught in the polishing wheel, and improvements were needed.

[0004] Patent Document 1 discloses a jig used when buffing plungers used in automobile engines, but it is specialized for a configuration in which the plunger is fitted into a hole, and the workpieces that can be used are extremely limited. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 5-78463 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the current situation as described above, and aims to provide an unprecedented work holding jig that not only allows for good buffing without the need to press the workpiece directly against the buffing portion by hand, but is also capable of holding various workpieces well and securely without being limited to a specific shape. [Means for solving the problem]

[0007] The gist of the present invention will be explained with reference to the accompanying drawings.

[0008] A workpiece holding jig used when pressing the workpiece 1 against the buffing part of the buffing device, a handle portion 2 that is gripped by an operator; a holding part 3 rotatably provided at the tip of the handle part 2 and holding the workpiece 1; a suction mechanism for suctioning the workpiece 1 to the holder 3; The present invention relates to a workpiece holding jig characterized by having:

[0009] Furthermore, in the work holding jig described in claim 1, the holding portion 3 is fitted onto the handle portion 2 so that the tip of the handle portion 2 is exposed, and the suction mechanism applies vacuum suction force to the workpiece 1 through a vacuum path 4 provided in the handle portion 2 to suction and hold the workpiece 1 to the holding portion 3.

[0010] The present invention also relates to a workpiece holding jig as described in claim 2, characterized in that the tip of the handle portion 2 does not protrude beyond the abutment portion 5 of the holding portion 3 with the workpiece 1.

[0011] The present invention also relates to a workpiece holding jig as set forth in any one of claims 2 and 3, characterized in that a vacuum generator 6 having a flow path communicating with the vacuum path 4 is provided at the base end of the handle portion 2.

[0012] Furthermore, in the work holding jig described in claim 4, the vacuum generator 6 is configured to blow exhaust air toward the buff portion when the work 1 held by the holding portion 3 is pressed against the buff portion. [Effects of the Invention]

[0013] The present invention is configured as described above, and thus provides a never-before-seen workpiece holding jig that allows various workpieces to be buffed safely without the need to hold them directly with the hands. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram of the present embodiment; [Figure 2] FIG. 2 is an explanatory diagram of the use state of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] A preferred embodiment of the present invention will be briefly described below, illustrating the operation of the present invention with reference to the drawings.

[0016] By holding the handle 2 and pressing the workpiece 1 adsorbed to the holding part 3 against the buff part of the buffing device, even if the workpiece 1 is small, the worker can perform buffing work without the risk of his or her fingers getting caught in the buff part.

[0017] In this case, the workpiece 1 is held by suction to the holding portion 3, so the shape of the workpiece 1 is not limited to a specific one, and various types of workpieces 1 can be held, as long as they are of a size and shape that can be vacuum-suctioned.

[0018] Furthermore, since the holding part 3 is rotatably mounted on the handle part 2, the worker can perform buffing work while rotating the holding part 3 (workpiece 1) using the rotational force of the buffing part, making it possible to polish the polishing surface evenly and without unevenness, just as when pressing the workpiece 1 directly with the hand. [Example]

[0019] Specific embodiments of the present invention will be described with reference to the drawings.

[0020] This embodiment is a workpiece holding jig used to press a workpiece 1 against a buff wheel B (buffing section) of a buffing race A (buffing device) used for finishing (finishing polishing) stainless steel products, etc., and is suitable for use with relatively small workpieces 1 that may get their fingers caught if pressed directly by hand against the buffing wheel B.

[0021] Specifically, as shown in Figure 1, this embodiment has a handle 2 that is gripped by the operator, a holding part 3 that is rotatably provided at the tip of the handle 2 and holds the workpiece 1, and an adsorption mechanism that adsorbs the workpiece 1 to the holding part 3.

[0022] Each part will be explained in detail.

[0023] The handle 2 is a round rod-shaped member made of aluminum alloy with a diameter (approximately 3 to 4 cm) that can be gripped by an operator and a length (approximately 15 to 20 cm) that is easy to handle, and has vacuum paths 4 (straight holes) inside that open at the tip and base ends.

[0024] An annular aluminum alloy holder 3 is fitted onto the tip of the handle 2 so that it can rotate around the handle 2 as an axis. That is, the tip of the handle 2 (having the opening for the vacuum path 4) is exposed from the central opening 7 of the holder 3, and the holder 3 projects in a flange-like shape in the radial direction of the handle 2. In the drawing, reference numeral 16 denotes a radial ball bearing.

[0025] The tip side of the holding part 3 is provided with a flat bottom surface 8 that is perpendicular to the axial direction of the handle part 2, and a peripheral wall 9 that surrounds the bottom surface 8. The inner surface of the peripheral wall 9 is smoothly curved and connected to the bottom surface 8.

[0026] A rubber O-ring 5 is provided on the bottom surface portion 8 so as to surround the central opening 7. The O-ring 5 protrudes from the bottom surface portion 8 and serves as a contact portion 5 against which the workpiece 1 comes into contact when it is held by suction.

[0027] In this embodiment, the tip of the handle 2 does not protrude from the contact portion 5. Specifically, the tip of the handle 2 is recessed into the bottom surface 8 of the holder 3. Therefore, even when the workpiece 1 (holder 3) is rotated relative to the handle 2, contact between the workpiece 1 and the handle 2 is prevented.

[0028] According to this embodiment, since the holder 3 can be rotated relative to the handle 2, for example, as shown in Fig. 2, the entire front surface of the rectangular parallelepiped workpiece 1 can be evenly brought into contact with the buff wheel B and buffed without rotating the holder 3, or by changing the pressing method, such as by bringing only a portion of the front surface into contact with the buff wheel B, the holder 3 can be rotated while buffing. This allows for more adjustment by the operator than in a configuration in which the holder 3 does not rotate, and enables buffing that is comparable to when the workpiece is pressed directly by hand against the buff wheel B. Note that the workpiece 1 is not limited to a rectangular parallelepiped workpiece 1, and workpieces 1 of various shapes, such as cylindrical or dish-shaped, can be held as long as they can be held by suction.

[0029] A vacuum generator 6 is attached to the base end of the handle 2 via an elbow member 10. Inside the elbow member 10, a communication hole 11 is provided that communicates with the vacuum path 4 of the handle 2 and the flow path inside the vacuum generator 6.

[0030] A known configuration can be used for the vacuum generator 6. Inside the vacuum generator 6, there is provided a flow path consisting of an inlet section 12 into which compressed air is introduced, a pressure reduction section 13 (constricted section) where the pressure of the introduced compressed air is reduced, an exhaust section 14 from which the compressed air is exhausted, and a branch section 15 that branches off near the pressure reduction section 13 and is connected to the communication hole 11 of the elbow member 10. In the drawing, reference numeral 17 denotes a silencer and 18 denotes a cock.

[0031] The vacuum generator 6, vacuum path 4, communication hole 11, etc. constitute a suction mechanism that applies a vacuum suction force to the workpiece 1 through the vacuum path 4 provided in the handle 2, thereby suction-holding the workpiece 1 to the holder 3.

[0032] Therefore, by introducing compressed air using a compressor or the like into the inlet 12 of the vacuum generator 6 and discharging it from the exhaust 14 through the pressure reducing section 13, the pressure reducing section 13 can be used as a vacuum source to reduce the pressure in the communicating hole 11 of the elbow member 10 and the vacuum path 4 of the handle 2 through the branching section 15, generating a vacuum suction force near the tip opening of the handle 2, making it possible to suction and hold the workpiece 1 on the holding section 3.

[0033] Furthermore, in this embodiment, the handle 2 and the vacuum generator 6 are connected via an elbow member 10, and the exhaust section 14 is positioned at the tip end in the same direction as the handle 2, so that when the workpiece 1 held by the holder 3 is pressed against the buffing wheel B, the exhaust air is blown out toward the buffing wheel B (the exhaust air is blown out in the opposite direction from the operator). Therefore, it is possible to prevent the exhaust air from interfering with the operator's work as much as possible.

[0034] Since this embodiment is configured as described above, by grasping the handle portion 2 and pressing the workpiece 1 adsorbed to the holding portion 3 against the buffing portion, it is possible to perform buffing work even with a small workpiece 1 without the risk of the worker's fingers getting caught in the buffing portion.

[0035] In this case, the workpiece 1 is held by suction to the holding portion 3, so the shape of the workpiece 1 is not limited to a specific one as long as it is of a size and shape that can be vacuum-suctioned, and various types of workpieces 1 can be held.

[0036] Furthermore, since the holding part 3 is rotatably mounted on the handle part 2, the worker can perform buffing work while rotating the holding part 3 (workpiece 1) using the rotational force of the buffing part, making it possible to polish the polishing surface evenly and without unevenness, just as when pressing the workpiece 1 directly with the hand.

[0037] Therefore, this embodiment is an unprecedented workpiece holding jig that allows various workpieces to be buffed safely without the need to hold them directly with hands. [Explanation of symbols]

[0038] 1 Work 2 Handle 3 Holding part 4 Vacuum Path 5 Contact part 6. Vacuum Generator

Claims

1. A workpiece holding jig used when pressing a workpiece against a buffing portion of a buffing device, a handle portion that is gripped by an operator; a holder that is rotatably provided at the tip of the handle and holds the workpiece; a suction mechanism for suctioning the workpiece to the holder; A workpiece holding jig comprising:

2. 2. A workpiece holding jig according to claim 1, wherein the holding portion is fitted onto the handle portion so that the tip of the handle portion is exposed, and the suction mechanism applies a vacuum suction force to the workpiece through a vacuum path provided in the handle portion, thereby suction-holding the workpiece to the holding portion.

3. 3. A workpiece holding jig according to claim 2, wherein the tip of said handle portion does not protrude beyond the contact portion of said holding portion with said workpiece.

4. 4. A workpiece holding jig according to claim 2, wherein a vacuum generator having a flow path communicating with said vacuum path is provided at the base end of said handle.

5. 5. The workpiece holding jig according to claim 4, wherein the vacuum generator is configured to blow exhaust air toward the buffing portion when the workpiece held by the holding portion is pressed against the buffing portion.

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