JP5155682B2 - Barrel polishing machine - Google Patents

Description

  The present invention relates to a barrel polishing machine.

  Patent Document 1 includes a rotating member that rotates horizontally, a bottomed cylindrical barrel case that is rotatably provided at a position that is eccentric from the rotation center of the rotating member, and a barrel tank that is accommodated in the barrel case. A barrel polishing machine is disclosed in which a workpiece is polished in a barrel tank by planetary rotation of the barrel tank.

  The barrel tank includes a bottomed cylindrical tank body and a barrel lid that closes the opening on the upper surface of the tank body, and the barrel lid is provided with a handle. The handle includes a pair of leg portions that rise from the upper surface of the barrel lid, and a grip portion that is interposed between the upper ends of the leg portions.

In this type of barrel polishing machine, as a means for preventing the barrel tank in the barrel case from being lifted by centrifugal force, a method of pressing the handle from above with an arm portion extended from the rotating member is conceivable. In this case, in consideration of the rotation of the barrel tank, the arm portion is provided with a rotation-free pressing member, and the position of the pressing member serving as the center of rotation of the barrel tank, that is, the central portion in the length direction of the gripping portion. It will be pressed down.
Japanese Utility Model Publication No. 5-93755

In the structure in which the center portion of the gripping part is pressed, there is a concern that the barrel tank rises while curving and deforming the gripping part when the lifting force of the barrel tank is larger than the rigidity of the gripping part. If it becomes like this, there exists a possibility that the both ends of a holding part may lift and may interfere with the other member located above a barrel tank.
The present invention has been completed based on the above circumstances, and an object thereof is to prevent the deformation of the handle.

As means for achieving the above object, the invention of claim 1 includes a rotating member that rotates horizontally, and a bottomed cylindrical barrel case that is rotatably provided at a position eccentric from the center of rotation of the rotating member. A barrel tank housed in the barrel case, the barrel tank includes a bottomed cylindrical tank body and a barrel lid that closes an opening on an upper surface of the tank body. Is a barrel polishing machine provided with a handle composed of a pair of legs that rise from the upper surface of the barrel lid and a gripping part that is interposed between the upper ends of the pair of legs. Is provided with a reinforcing member made of a material having rigidity higher than that of the handle, and the reinforcing member is bent from both ends of the first reinforcing portion and the first reinforcing portion along the grip portion. Extend along the legs of A pair of second reinforcing portions, and a peripheral member of the barrel lid is made of a material having higher rigidity than the handle, and a fixing member for fixing the barrel lid to the tank body is engaged. A ring-shaped member is provided, and the lower ends of the pair of second reinforcing portions are characterized in that they are connected to the ring-shaped member .

According to a second aspect of the present invention, in the first aspect, the ring-shaped member is integrally provided with a linear reinforcing bar that connects two different positions on the inner peripheral edge of the ring-shaped member. The lower end of the pair of second reinforcing portions is fixed to the reinforcing bar .

The invention of claim 3 is a horizontally rotating rotating member, a bottomed cylindrical barrel case rotatably provided at a position eccentric from the rotation center of the rotating member, and a barrel tank accommodated in the barrel case The barrel tank includes a bottomed cylindrical tank body and a barrel lid that closes an opening on the upper surface of the tank body, and the barrel lid rises from a top surface of the barrel lid. In a barrel grinder provided with a handle composed of a leg and a gripping part that is interposed between the upper ends of the pair of legs, the handle is made of a material that is higher in rigidity than the handle. While the reinforcing member is provided, the rotating member is formed with an arm portion that extends in a cantilever shape in the radial direction from the center of rotation, and the handle has an extending end on the handle. Press from above It has a feature where the wood is mounted.

<Invention of Claim 1>
Since the handle is provided with a reinforcing member having rigidity higher than that of the handle, deformation of the handle can be prevented.

Moreover, since the reinforcing member is a form that continues over the entire length of the grip portion and the pair of leg portions, that is, the handle, the deformation of the handle can be surely prevented.

Moreover, since the reinforcing member is supported by the ring-shaped member having high rigidity, deformation of the reinforcing member itself is restricted. Thereby, a deformation | transformation of a handle can be prevented reliably.

<Invention of Claim 2 >
Since the reinforcing bar to which the lower ends of the pair of second reinforcing portions are fixed is linear, it is difficult to expand and contract. Therefore, the pair of second reinforcing portions fixed to the reinforcing bar does not have a risk of relative displacement such that the pair of second reinforcing portions approach or separate from each other, whereby the deformation of the reinforcing member is reliably restricted, and as a result, the handle Can be prevented more reliably.

<Embodiment 1>
A first embodiment of the present invention will be described below with reference to FIGS. The barrel polishing machine of this embodiment is one in which a polishing apparatus 20 (see FIG. 1) is accommodated in a box-shaped housing 10 (see FIGS. 2 and 3). The upper surface plate 11 of the housing 10 is formed with an opening 12 with a part cut away, and the opening 12 is opened and closed by a swingable cover 13 that is pivotally supported on the opening edge of the opening 12. It has become. Arc-shaped guide pieces 14 and 15 are formed on the lower surface of the upper surface plate 11 and the lower surface of the cover 13 so as to protrude downward (inside the housing 10). As shown, the guide piece 16 of the upper surface plate 11 and the guide piece 15 of the cover 13 constitute a circular guide ring 16.

  As shown in FIG. 1, the polishing apparatus 20 includes a rotating member 21 that is driven to rotate horizontally by a well-known drive mechanism (not shown) around a drive shaft 22 whose axis is directed vertically. The drive shaft 22 of the rotating member 21 is arranged at the center of the circle of the guide ring 16. The rotating member 21 is formed with a plurality of arm portions 23 that cantileverly extend from the center of rotation in the radial direction. A pressing member 24 that is rotatable about an axis in the vertical direction (a direction parallel to the rotation center axis of the rotation member 21) is attached to the lower surface of the extended end portion of each arm portion 23. The rotation centers of the pressing member 24 are located at equiangular intervals on a circle concentric with the rotation center of the rotation member 21. In addition, the length of the arm portion 23 is smaller than the radius of the guide ring 16, and the pressing member 24 turns along a circle concentric with the guide ring 16 in a region inside the guide ring 16.

  A plurality of barrel cases 25 (the same number as the arm portions 23 and the pressing members 24) of a bottomed cylindrical shape (that is, a form in which the upper surface is opened) are provided at positions eccentric from the rotation center on the upper surface of the rotating member 21. Yes. The plurality of barrel cases 25 are arranged at equiangular intervals along a circle concentric with the rotating member 21. Each barrel case 25 is driven to rotate relative to the rotary member 21 by a well-known drive mechanism (not shown) around a rotation shaft (not shown) whose axis is parallel to the drive shaft 22. It has become. The above-described pressing member 24 is arranged coaxially with the rotation center axis of the barrel case 25 by turning the arm portion 23.

  A barrel tank 26 is accommodated in the barrel case 25. The barrel tank 26 includes a tank body 27 having a bottomed cylindrical shape, and a barrel lid 31 that opens and closes an opening on the upper surface of the tank body 27. The outer diameter of the barrel tank 26 is the same as or slightly smaller than the inner diameter of the barrel case 25. A concentric flange portion 28 is formed at the upper end portion of the tank body 27, and attachment holes 29 penetrating in the vertical direction are formed in the flange portion 28 at three locations spaced in the circumferential direction. Each of the holes 29 is embedded with a nut 30 concentrically and rotationally restricted.

  As shown in FIGS. 4 to 7, the barrel lid 31 includes a lid body 32 having a disc shape as a whole, a handle 37 formed on the upper surface of the lid body 32, and a reinforcing member 40. . In the following description, for the sake of convenience, the length direction of the reinforcing bar 36 and the grip portion 39 described later is referred to as the front-rear direction.

  The lid body 32 is obtained by integrating a substantially disk-shaped lid plate portion 33 made of urethane resin and a ring-shaped member 34 disposed along the outer periphery of the upper surface of the lid plate portion 33 by insert molding. The ring-shaped member 34 is made of an annular metal plate concentric with the lid plate portion 33, and has higher rigidity than the lid plate portion 33. The outer diameter of the ring-shaped member 34 is the same as the outer diameter of the lid plate portion 33, and the upper surface of the ring-shaped member 34 is continuous with the upper surface of the lid plate portion 33. Further, as shown in FIG. 5, a through-hole 35 having a configuration that vertically penetrates the lid plate portion 33 and the ring-shaped member 34 is formed at the peripheral portion of the lid main body 32 at an equal angular interval in the circumferential direction. It is formed in the place.

  A reinforcing bar 36 made of a metal plate is integrally formed with the ring-shaped member 34. The reinforcing bar 36 has higher rigidity than the lid plate portion 33 and has a configuration in which two different positions on the inner peripheral edge of the ring-shaped member 34 are connected. That is, as shown in FIG. 5, the reinforcing bar 36 extends linearly in the diameter direction of the ring-shaped member 34 (lid body 32). In other words, the reinforcing bar 36 is formed on the ring-shaped member 34 (lid body 32). It passes through the center and crosses the center of the cover plate portion 33 in the front-rear direction. As shown in FIG. 7, the thickness of the reinforcing bar 36 is the same as that of the ring-shaped member 34, and the upper surface of the reinforcing bar 36 is flush with the upper surface of the ring-shaped member 34 and the upper surface of the lid plate portion 33. It is connected to the shape. By providing this reinforcing bar 36, the lid plate portion 33 made of urethane resin is restricted from being deformed so as to bulge its central portion upward.

  The handle 37 is made of urethane resin like the lid plate portion 33 and is formed simultaneously with the lid plate portion 33. The handle 37 is symmetrical with respect to the front-rear direction line passing through the center of the circle of the barrel lid 31 (lid body 32), and at the same time, the handle 37 is front-rear with respect to the left-right direction line passing through the center of the circle of the barrel lid 31 (lid body 32). It is a symmetrical form.

  The handle 37 is composed of a pair of front and rear leg portions 38 that rise at a right angle from the upper surface of the lid main body 32, and a grip portion 39 that connects the rising end portions (upper end portions) of the both leg portions 38. The pair of leg portions 38 are arranged so as to correspond to the front and rear end portions of the reinforcing bar 36, and the planar shape thereof is a long oval shape in a direction perpendicular to the length direction of the reinforcing bar 36 as shown in FIG. Eggplant. A part of the leg portion 38 covers both ends of the reinforcing bar 36 and also covers a region near both ends of the reinforcing bar 36 on the inner peripheral edge of the ring-shaped member 34. Further, the lower end of the leg portion 38 is continuous with the upper surface of the lid plate portion 33 in a region where the ring-shaped member 34 and the reinforcing bar 36 are not covered.

  As shown in FIG. 4 and FIG. 6, the grip portion 39 is configured to be inserted in the front-rear direction between the mutually facing inner surfaces of the pair of leg portions 38, and is parallel to the reinforcement bar 36 immediately above the reinforcement bar 36. It extends in a straight line. The cross-sectional shape perpendicular to the length direction of the grip portion 39 is an isosceles trapezoid whose upper side is longer than the lower side, as shown in FIG. The width dimension of the grip portion 39 is smaller than the dimension of the leg portion 38 in the left-right direction (longitudinal direction) and larger than the width dimension of the reinforcing bar 36.

  When polishing using this polishing apparatus 20, a mass (work and polishing stone, if necessary, water and compound) (not shown) is put into the tank body 27, and the opening on the upper surface of the tank body 27 is barreled. The lid 31 closes. Then, as shown in FIG. 1, the bolt 17 (fixing member, which is a constituent element of the present invention) passed through the through hole 35 of the barrel lid 31 is inserted into the mounting hole 29 of the tank body 27 and screwed into the nut 30. And tighten. Then, the head 18 of the bolt 17 is locked from above with respect to the hole edge of the through hole 35 on the upper surface of the ring-shaped member 34 of the barrel lid 31, whereby the peripheral portion of the barrel lid 31 is flanged 28. And the barrel lid 31 is fixed to the tank body 27.

  Thereafter, the barrel tank 26 is accommodated in the barrel case 25, the arm portion 23 is turned, the pressing member 24 is moved right above the barrel tank 26, and the knob 44 at the upper end of the drive shaft 22 is further turned. The pressing member 24 is fixed so as to be located immediately above the central portion of the barrel tank 26. At this time, a slight gap is provided between the lower surface of the pressing member 24 and the upper surface of the barrel tank 26. In this way, the barrel tank 26 is set so that it can rotate integrally with the barrel case 25 without jumping upward from the barrel case 25. In this state, when the rotating member 21 is rotated and the barrel case 25 is rotated, each barrel tank 26 rotates in a planetary manner, so that the workpiece in the barrel tank 26 is polished by the compound.

  While the polishing is being performed, the barrel tank 26 in the barrel case 25 tends to slide up due to centrifugal force. Therefore, as a means for preventing the barrel tank 26, when the barrel tank 26 is slightly lifted, the pressing member 24 is moved upward. The handle 37 is pressed down. However, the contact position (corresponding position) of the pressing member 24 in the handle 37 at this time is the central portion in the longitudinal direction of the elongated gripping portion 39 supported at both ends by the pair of leg portions 38, and this gripping portion. Since 39 is made of urethane resin and has a relatively low rigidity, as shown by an imaginary line in FIG. 1, the gripping portion 39 is elastically curved and deformed so as to be recessed downward, so that the barrel tank 26 As a whole, there is concern over the upward movement.

  If it becomes like this, there exists a possibility that the both ends of the holding part 39 displaced upward may interfere with the guide ring 16. Therefore, in this embodiment, as a means for preventing the deformation of the handle 37, the entire region of the handle 37 in the length direction (that is, from the lower end of one leg portion 38 to the lower end of the other leg portion 38 through the grip portion 39). The reinforcing member 40 is provided in a continuous form over the entire region. Hereinafter, the reinforcing member 40 will be described in detail with reference to FIGS.

  The reinforcing member 40 is made of a metal, that is, a material having rigidity higher than that of the urethane resin that is the material of the handle 37, and is formed by bending an elongated metal plate material. The reinforcing member 40 has a first reinforcing portion 41 that extends in a straight line in the front-rear direction with the plate surface horizontal, and a pair of second reinforcing portions that extend linearly downward at right angles from both front and rear ends of the first reinforcing portion 41. 42. The entire reinforcing member 40 is integrated into the handle 37 by insert molding. That is, as shown in FIG. 6, the first reinforcing part 41 is embedded in the holding part 39 in parallel with the length direction of the holding part 39, and the second reinforcing part 42 is embedded in the leg part 38. It is buried parallel to the rising direction.

  The position and the form of the reinforcing member 40 are symmetric with respect to the front-rear direction line passing through the center of the circle of the barrel lid 31 (lid body 32), as well as the handle 37, and at the same time the barrel lid 31 (lid body 32). It is a back-and-forth symmetrical form with respect to the horizontal line passing through the center of the circle. As shown in FIGS. 6 and 7, the position of the first reinforcing portion 41 in the vertical direction (thickness direction of the grip portion 39) is the lower end portion of the grip portion 39 (position closer to the lower surface than the upper surface of the grip portion 39). It has become. Further, as shown in FIG. 6, the position of the second reinforcing portion 42 in the front-rear direction is closer to the inner side (center side of the barrel lid 31) than the outer side of the leg portion 38.

  The lower ends of the second reinforcing portions 42 are integrated with the front and rear end portions of the reinforcing bar 36. In other words, both the second reinforcing portions 42 are connected to the ring-shaped member 34 via the reinforcing bar 36. That is, both the second reinforcing portions 42 are fixed to the upper surface of the reinforcing bar 36 so as not to tilt in the front-rear direction by fixing means such as welding. As a result, the second reinforcing portion 42 rises at a right angle from the upper surface of the reinforcing bar 36. The integration of the second reinforcing portion 42 and the reinforcing bar 36 is performed prior to the insert molding.

  As shown in FIG. 1, the pressing member 24 is disposed above the central portion of the gripping portion 39 with a slight gap so that the pressing member 24 presses the central portion of the gripping portion 39 from above. I can do it. In this state, when the barrel tub 26 in the barrel case 25 slightly rises and the center portion of the gripping portion 39 comes into contact with the lower surface of the pressing member 24, both ends of the gripping portion 39 are displaced upward. A force to bend is applied. At this time, since the first reinforcing portion 41 of the reinforcing member 40 having a rigidity higher than that of the grip portion 39 is embedded in the grip portion 39, the grip portion 39 is prevented from being bent and deformed. The sliding up is prevented, and the interference between the guide ring 16 and the barrel tank 26 is suppressed.

  The reinforcing member 40 includes a first reinforcing portion 41 along the grip portion 39 and a pair of second reinforcing portions 42 that are bent from both ends of the first reinforcing portion 41 and extend along the pair of leg portions 38. Therefore, not only the deformation of the grip portion 39 but also the deformation of the leg portion 38 is restricted, so that the deformation of the handle 37 can be prevented more reliably.

  In addition, a ring-shaped member 34 is provided on the periphery of the barrel lid 31. The ring-shaped member 34 is made of a metal material having higher rigidity than that of the handle 37 and engages the bolt 17 for fixing the barrel lid 31 to the tank body 27. However, in this embodiment, paying attention to the presence of the ring-shaped member 34, the lower ends of the pair of second reinforcing portions 42 are configured to be continuous with the ring-shaped member 34. As described above, since the reinforcing member 40 is supported by the ring-shaped member 34 having high rigidity, the deformation of the reinforcing member 40 itself (the bent portion where the first reinforcing portion 41 and the second reinforcing portion 42 are connected at a right angle is a right angle). To be deformed to have an angle other than. Further, relative displacement of the reinforcing member 40 in the vertical direction, the horizontal direction, or the front-rear direction with respect to the lid body 32 is also restricted. Thereby, the deformation | transformation of the handle 37 can be prevented more reliably.

  In addition, the ring-shaped member 34 is integrally provided with a reinforcing bar 36 that connects two different positions on the inner peripheral edge of the ring-shaped member 34. However, the reinforcing bar 36 is linear. Focusing on the point that it is difficult to stretch and deform, the lower ends of the pair of second reinforcing portions 42 are fixed to the reinforcing bar 36. As a result, the pair of second reinforcing portions 42 are restricted from relative displacement in the front-rear direction so as to approach and separate from each other, and as a result, deformation of the reinforcing member 40 is reliably restricted. Therefore, the deformation of the handle 37 can be prevented more reliably.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the handle is made of urethane resin in the above embodiment, the handle may be made of synthetic resin other than urethane resin, or may be a material other than synthetic resin (for example, metal).
(2) In the above embodiment, the reinforcing member has a form extending over the entire length of the handle. Form) or a substantially L-shaped form (form consisting of a first reinforcing part and one second reinforcing part) along only the grip part and one of the leg parts.
(3) In the above embodiment, the pair of second reinforcing portions are connected to the ring-shaped member via the reinforcing bar. However, the present invention also includes a mode in which the pair of second reinforcing portions are directly connected to the ring-shaped member. Including.
(4) In the above embodiment, the pair of second reinforcing portions are fixed to the reinforcing bar. However, one of the pair of second reinforcing portions is fixed to the reinforcing bar, and the other second reinforcing portion is connected to the ring. It may be fixed to the member.
(5) Although the reinforcing member is made of metal in the above embodiment, the reinforcing member may be made of a material having relatively high rigidity other than metal.
<Reference example>
(1) In the above embodiment, the pair of second reinforcing portions are connected to the ring-shaped member. However, the reinforcing member may be provided separately from the ring-shaped member.

The partial expanded sectional view of the barrel polisher of Embodiment 1 Side view of housing Top view of housing Perspective view of barrel lid of barrel tank Top view of barrel lid XX sectional view of FIG. YY sectional view of FIG.

Explanation of symbols

17 ... Bolt (fixing member)
DESCRIPTION OF SYMBOLS 21 ... Rotating member 25 ... Barrel case 26 ... Barrel tank 27 ... Tank main body 31 ... Barrel lid 34 ... Ring-shaped member 36 ... Reinforcement bar 37 ... Handle 38 ... Leg part 39 ... Grasping part 40 ... Reinforcement member 41 ... 1st reinforcement part 42. Second reinforcing portion

Claims (3)

A rotating member that rotates horizontally;
A bottomed cylindrical barrel case rotatably provided at a position eccentric from the rotation center of the rotating member;
A barrel tank housed in the barrel case;
The barrel tank includes a bottomed cylindrical tank body and a barrel lid that closes an opening on the upper surface of the tank body.
In the barrel polisher, the barrel lid is provided with a handle composed of a pair of leg portions that rise from the upper surface of the barrel lid and a grip portion that is interposed between the upper ends of the pair of leg portions. ,
The handle is provided with a reinforcing member made of a material having higher rigidity than the handle ,
The reinforcing member includes a first reinforcing portion along the grip portion, and a pair of second reinforcing portions that are bent from both ends of the first reinforcing portion and extend along the pair of legs. Configured,
The peripheral edge of the barrel lid is made of a material having higher rigidity than the handle, and is provided with a ring-shaped member for locking a fixing member for fixing the barrel lid to the tank body,
A barrel polisher characterized in that lower ends of the pair of second reinforcing portions are connected to the ring-shaped member . The ring-shaped member is integrally provided with a linear reinforcing bar that connects two different positions on the inner peripheral edge of the ring-shaped member,
The barrel polishing machine according to claim 1 , wherein lower ends of the pair of second reinforcing portions are fixed to the reinforcing bar . A rotating member that rotates horizontally;
A bottomed cylindrical barrel case rotatably provided at a position eccentric from the rotation center of the rotating member;
A barrel tank housed in the barrel case;
The barrel tank includes a bottomed cylindrical tank body and a barrel lid that closes an opening on the upper surface of the tank body.
In the barrel polisher, the barrel lid is provided with a handle composed of a pair of leg portions that rise from the upper surface of the barrel lid and a grip portion that is interposed between the upper ends of the pair of leg portions. ,
While the handle is provided with a reinforcing member made of a material having higher rigidity than the handle,
The rotating member is formed with an arm portion extending in a cantilevered manner from the rotation center in the radial direction,
The extending end of the arm portion, wherein the to Luba barrel polishing machine the pressing member for pressing from above the handle is attached.

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