JP2019107734A - Centrifugal barrel polishing machine - Google Patents

Abstract

To provide an increase in workability at the time of attaching and detaching a lid to a barrel body.SOLUTION: A centrifugal barrel polishing machine G is provided with a turret 15 which is rotatably driven about a rotational axis 13 in a vertical direction, a barrel body 31 having an opening on the upper surface, and a lid 37 for opening and closing an opening 34. It is also provided with a plurality of barrel tanks 30 which is rotatably provided at an eccentric position of the turret 15 so as to epicyclically rotate, a pressing member 48 which can face the upper surface of a plurality of lids 37, and a first spring 57 (an elastic member for closing lid) which can apply a downward elastic pressing force to the plurality of lids 37 via the pressing member 48. The lid 37 is put on the opening 34 on the upper surface of the barrel body 31 and the elastic pressing force from the first spring 57 is applied to the lid 37 via the pressing member 48, thereby fixing the lid 37 to the barrel body 31.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a centrifugal barrel polisher.

  In patent document 1, the barrel tank of the form which closed the opening part of the upper surface of the barrel main body which makes a bottomed cylinder shape with a lid is accommodated in a bottomed cylindrical barrel case, and a barrel tank and a barrel case are planetary rotation. Discloses a centrifugal barrel polisher that performs polishing in a barrel tank by

Patent No. 4189010

  The above-described centrifugal barrel polishing machine is configured such that the flange portion on the outer periphery of the upper end of the barrel body and the outer peripheral edge of the lid are coupled by tightening the bolt and the nut as a means for fixing the barrel body and the lid in an assembled state. It has become. The bolt fixing structure needs to be provided at a plurality of circumferentially spaced locations. Therefore, even when fixing the barrel main body and the lid, and when removing the lid from the barrel main body, it has been necessary to carry out a time-consuming operation of tightening or loosening a plurality of bolts.

  The present invention is completed based on the above circumstances, and it is an object of the present invention to improve workability when attaching and detaching a lid to and from a barrel body.

The present invention
A turret which is driven to rotate about a vertical rotation axis;
A plurality of barrel tanks provided with a barrel main body having an opening on the upper surface and a lid for opening and closing the opening, and rotatably provided at an eccentric position of the turret for planetary rotation;
A pressing member capable of facing the upper surfaces of the plurality of lids;
It has a feature in the point provided with the elastic member for closures which can give downward elastic pressure to said lids via said pressing member.

  The lid is fixed to the barrel main body by covering the opening on the upper surface of the barrel main body and applying the elastic pressing force of the closing lid elastic member to the lid through the pressing member. Compared with the case where the lid is fixed to the barrel body by tightening the bolt and the nut, the workability of attaching and detaching the lid to the barrel body is excellent.

In Example 1, a front view of a centrifugal barrel grinding machine showing a state in which a pressing member is held at a pressing position Side view of a centrifugal barrel grinding machine showing the pressing member held in the pressing position Side view of the centrifugal barrel polishing machine showing the pressing member raised to the pressing release position Top view showing the positional relationship between the turret and the barrel tank Sectional view showing the mounting structure of the arm portion of the pressing module and the pressing member Top view of the barrel case XX sectional view of FIG. 6 Top view of the barrel tank Front view of barrel tank Sectional view showing a state in which the lid is fixed to the barrel body by the pressing member Sectional view showing a state in which the lid is lifted above the barrel body

  The present invention retracts the pressing member to the pressing position by applying the elastic pressing force of the closing lid elastic member to the lid, and retracts the lid from the pressing position upward by the closing lid elastic member. You may provide the raising / lowering mechanism which raises / lowers between the press release positions released from elastic pressing force. According to this configuration, since it is not necessary to manually release the elastic pressing force, the workability of opening and closing the lid and attaching and detaching the barrel tank is good.

  In the present invention, a revolving drive mechanism, which is provided directly connected to the turret, and rotationally drives the turret, and the pressing member is synchronously rotatably connected to the turret when the pressing member is in the pressing position, The pressing member may include a connecting portion that releases the connection between the pressing member and the turret when the pressing member is in the pressing release position. If the revolving drive mechanism is directly connected to the pressing member, there is a concern that the structure of the lifting mechanism for raising and lowering the pressing member may be complicated, but a connecting portion capable of coupling and releasing the coupling between the pressing member and the turret By providing the revolving drive mechanism directly connected to the turret, the elevation mechanism can be simplified.

  In the present invention, the pressing member may be made to be capable of planetary rotation following the barrel tank in a state in which the lid is pressed. According to this configuration, even if an elastic pressing force is applied to the lid from the pressing member, the pressing member follows the barrel tank and performs planetary rotation, and there is no possibility that the rotation of the barrel tank is hindered.

  In the present invention, an elastically deformable eccentric absorbing member may be provided in the contact area between the lid and the pressing member. According to this configuration, it is possible to absorb misalignment between the rotation axis of the barrel tank and the rotation center of the pressing member by elastically deforming the eccentric absorption member.

  The present invention may be provided with a displacement absorbing member which is provided on the pressing member so as to be elastically deformable and which can absorb the vertical displacement between the pressing member and the lid. According to this configuration, since the positional displacement between the pressing member and the lid is absorbed by elastically deforming the positional displacement absorbing member, the lid can be reliably fixed to the barrel main body. .

  The present invention may include a pressing module in which a plurality of the pressing members are integrally provided to be able to revolve. According to this configuration, the number of parts can be reduced as compared with the case where the plurality of closing elastic members individually corresponding to the plurality of pressing members are provided.

Example 1
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the following description, regarding the front and rear direction, the left side in FIGS. With regard to the upper and lower directions, the directions appearing in FIGS. 1 to 3, 5, 7, 9 to 11 are defined as upper and lower as they are. For the left and right directions, the directions appearing in FIG. 1 are defined as left and right as they are.

<Overall Configuration of Centrifugal Barrel Polishing Machine G>
The centrifugal barrel polishing machine G according to the first embodiment is a workpiece stored in the barrel tank 30 by planetary rotation of the four (plurality) barrel tanks 30 around the rotation shaft 13 and the rotation shaft 24 in the vertical direction ( (Not shown) is polished. The centrifugal barrel polishing machine G includes a turret 15, a revolving drive mechanism 23 for rotationally driving the turret 15, a revolving drive mechanism 25 for rotating while rotating four barrel tanks 30, and a barrel tank 30. A lid pressing mechanism 40 for fixing the lid 37 to the barrel main body 31 is provided.

  As shown in FIGS. 1 to 3, the centrifugal barrel polishing machine G is disposed below the central frame 11 in the lateral direction, the upper frame 10 extending in the lateral direction, the central frame 11 in the lateral direction disposed below the upper frame 10, and And a lower frame 12 in the left-right direction. Both upper and lower end portions of the rotary shaft 13 whose axis is directed in the vertical direction are supported by the upper and lower frames in a state in which movement in the axial direction is restricted while rotation is possible. The rotating shaft 13 is rotationally driven by a motor 14 for rotation.

<Turret 15>
A turret 15 having a circular shape in plan view is attached to the rotation shaft 13. The turret 15 is a member in which a cylindrical drive side cylindrical portion 16 concentric with the rotation shaft 13 and a plate-like support portion 17 concentric with the rotation shaft 13 are integrated. The drive-side cylindrical portion 16 is externally fitted in a state where relative rotation with respect to the rotation shaft 13 is possible and relative displacement in the axial direction is restricted. At an upper end portion of the drive side cylindrical portion 16, a drive side connection portion 18 (a connection portion described in the claims) in which concavo-convex portions are arranged in the circumferential direction is formed.

  The plate-like support portion 17 protrudes in a flange shape from the outer peripheral lower end portion of the drive side cylindrical portion 16. A revolving motor 19 is installed behind the turret 15, and a belt 22 is wound around a pulley 20 on the outer periphery of the turret 15 and a pulley 21 of the revolving motor 19. The pulleys 20 and 21, the belt 22 and the revolution motor 19 constitute a revolution drive mechanism 23 for revolving the turret 15, and the turret 15 is rotationally driven by the revolution drive mechanism 23.

  In the plate-like support portion 17, four (plurality) rotation axes 24 whose axes are directed in the vertical direction are on the circumference concentric with the rotation axis 13 and at equal angular intervals in the circumferential direction, That is, it is provided at a position eccentrically from the rotating shaft 13 in the radial direction. Each of the rotary shafts 24 is attached to the plate-like support 17 (turret 15) so as to be rotatable relative to the plate-like support 17 and restricted in relative movement in the axial direction, and penetrates the plate-like support 17 up and down.

<Drive mechanism 25 for autorotation>
At a position below the plate-like support portion 17 of the rotation shaft 13, a drive gear 26 is attached so as to be integrally rotatable. A driven gear 27 rotationally driven in conjunction with the drive gear 26 is integrally fixed to the rotary shaft 24 so as to be integrally rotatable. When the rotation shaft 13 rotates, the rotation force of the rotation shaft 13 is transmitted to the rotation shaft 24 through the drive gear 26, the intermediate gear (not shown) and the driven gear 27, and the rotation shaft 24 rotates relative to the plate-like support 17. Relatively rotate. The rotary shaft 13, the motor 14 for rotation, the drive gear 26 and the driven gear 27 constitute a drive mechanism 25 for rotating the barrel tank 30 with respect to the turret 15 in a planetary manner.

<Barrel case 28 and barrel tank 30>
Barrel cases 28 are attached to the upper end portions of the respective rotary shafts 24 so as to be integrally rotatable. As shown in FIGS. 6 and 7, the barrel case 28 has a bottomed cylindrical shape whose top surface is open, and the bottom surface of the barrel case 28 is fixed to the upper end of the rotation shaft 24. Inside the barrel case 28 is formed a locking pin 29 which protrudes upward from the outer peripheral edge of the bottom plate.

  The barrel tank 30 opens and closes the metal barrel main body 31 in which the cylindrical peripheral wall 33 is raised from the outer peripheral edge of the bottom wall 32 having a circular shape in a plan view, and the opening 34 on the upper surface of the barrel main body 31 And a lid 37. At the lower end portion of the outer periphery of the barrel main body 31, four (plural) locking holes 35 penetrating in the vertical direction are provided at equal angular intervals in the circumferential direction. At the upper outer periphery of the barrel main body 31, four (plural) positioning pins 36 in the form of projecting upward are provided at equal angular intervals in the circumferential direction.

  The lid 37 includes a metallic lid main body 38 having a circular shape in plan view, and an eccentric absorbing member 39 made of urethane resin. The lid body 38 has a disk shape slightly larger than the opening area of the opening 34. The eccentric absorption member 39 has a disk shape (annular shape) smaller in diameter than the lid main body 38, and is concentrically fixed on the upper surface of the lid main body 38. The eccentrically absorbing member 39 can be elastically deformed in such a manner that the upper surface and the lower surface are relatively displaced in the horizontal direction (two-dimensional direction orthogonal to the direction in which the lid 37 is pressed by the pressing member 48 described later) It has become.

  When the lid 37 is fixed to the barrel main body 31, the lid 37 is placed on the upper end edge of the barrel main body 31, and the opening 34 is closed by the lid main body 38. At this time, as the outer peripheral edge of the lid main body 38 abuts or radially approaches the four positioning pins 36 so that the lid 37 faces the barrel main body 31 in the horizontal direction (the axial line of the barrel tank 30 Positional deviation in the orthogonal direction is held in a restricted state.

  The barrel tank 30 is accommodated in the barrel case 28 from the upper side. The barrel tank 30 housed in the barrel case 28 is held in a state in which the relative displacement is restricted with respect to the barrel case 28 by locking the locking hole 35 to the locking pin 29. As a result, the barrel tank 30 makes a planetary rotation integrally with the rotation shaft 24 and the barrel case 28.

<Lid pressing mechanism 40>
The lid pressing mechanism 40 is configured to include a pressing module 41, a first spring 57 (a closing lid elastic member described in the claims), and an elevating mechanism 60. The lid pressing mechanism 40 fixes the lid 37 so that the lid 37 can be held in a state where barrel polishing can be performed by fixing the lid 37 to the barrel main body 31 in a state of closing the opening 34 and fixing the lid 37. It has a function of releasing the lid 37 from the barrel main body 31 and a function of connecting the pressing module 41 so that the pressing module 41 can revolve integrally with the turret 15.

<Pressing Module 41>
The pressing module 41 is configured to include one movable member 42 and four pressing members 48 (the same number as the number of barrels 30) separate from the movable member 42, and is disposed above the turret 15. The movable member 42 is a member in which a cylindrical driven side cylindrical portion 43 disposed above the drive side cylindrical portion 16 and four (the same number as the barrel tanks 30) arm portions 46 are integrated. The driven-side cylindrical portion 43 is externally fitted to the rotation shaft 13 so as to be capable of relative rotation and relative movement in the axial direction (vertical direction). At the lower end portion of the driven-side cylindrical portion 43, a driven-side connecting portion 44 (connecting portion as claimed in the claims) in which concavo-convex portions are arranged in the circumferential direction is formed. A pair of locking projections 45 is provided on the outer peripheral upper end portion of the driven side cylindrical portion 43.

  The arm portion 46 is cantilevered outward in the radial direction (radial direction) along a horizontal surface from a position near the lower end portion of the outer periphery of the driven side cylindrical portion 43. As shown in FIG. 4, the four arm portions 46 are disposed at equal angular intervals in the circumferential direction, and can move integrally with the driven side cylindrical portion 43. At the extension end of each arm portion 46, a cylindrical bearing portion 47 whose axis is directed in the vertical direction is provided so as to penetrate the arm portion 46.

  As shown in FIG. 5, the pressing member 48 is integral with the driven shaft 49 attached in a penetrating manner in the bearing portion 47, the movable pressing body 54 attached to the lower end of the driven shaft 49, and the movable pressing body 54. And a second spring 51 (displacement absorbing member described in the claims). The driven shaft 49 is rotatable relative to the bearing portion 47, but relative movement in the axial direction (vertical direction) is restricted. A stopper 52 is integrally attached to the upper end of the driven shaft 49. The stopper 52 locks the upper end of the bearing 53 provided on the inner periphery of the bearing portion 47 from above, thereby restricting the downward movement of the driven shaft 49.

  In a region below the bearing portion 47, the lower end portion of the driven shaft 49 is provided with a movable pressing body 54 having a substantially disc shape concentric with the driven shaft 49. Although relative rotation of the movable pressing body 54 is restricted with respect to the driven shaft 49, relative movement in the vertical direction is permitted. Similarly, in a region below the bearing portion 47, a second rotary spring receiver 55 is provided in contact with the lower end of the bearing 56 provided on the inner periphery of the bearing portion 47 from below. The second rotary spring receiver 55 can rotate integrally with the driven shaft 49. A second spring 51 made of a compression coil spring is provided between the upper surface of the movable pressing body 54 and the lower surface of the second rotary spring support 55 so as to surround the driven shaft 49. Due to the elastic force (biasing force) of the second spring 51, the second rotary spring receiver 55 abuts against the lower end of the bearing portion 47 from below, and the movable pressing body 54 is biased downward.

  An annular (donut-shaped) buffer member 50 is fixed to the lower surface of the movable pressing body 54. The buffer member 50 rotates integrally with the driven shaft 49 and moves up and down relative to the driven shaft 49. The buffer member 50 is made of polyacetal resin (POM). The polyacetal resin has a characteristic that the adhesion is low with respect to the urethane resin which is a material of the eccentric absorption member 39 fixed to the upper surface of the lid 37. Therefore, when the lid 37 is removed from the barrel main body 31, there is no possibility that the buffer member 50 will stick to the eccentric absorption member 39 and remain in close contact.

  The four pressing members 48 (following shafts 49) are arranged at equal angular intervals of 90 ° on the circumference concentric with the rotating shaft 13. The four barrel tanks 30 (rotational axes 24) described above are also arranged at equal angular intervals on the circumference concentric with the rotation axis 13. The arrangement circle of the four pressing members 48 and the arrangement circle of the four barrel tanks 30 have the same diameter. Therefore, when the pressing module 41 rotates relative to the turret 15, the four pressing members 48 can be arranged coaxially with the four barrel vessels 30 in a plan view. Further, when the four pressing members 48 are displaced 45 ° with respect to the four barrel tanks 30, in a plan view, the arm 46 (the movable member 42) does not interfere with the barrel tank 30 (barrel tank) 30) in the area not overlapping at all.

<First spring 57 (elastic member for closing lid)>
A first rotary spring receiver 58 is provided at a position of the rotary shaft 13 above the driven cylindrical portion 43 of the pressing module 41. The first rotary spring receiver 58 is externally fitted to the rotary shaft 13 in such a manner that relative rotation is possible and relative movement of the rotary shaft 13 in the axial direction (vertical direction) is restricted. A first spring 57 formed of a compression coil spring is provided between the lower surface of the first rotary spring receiver 58 and the upper end surface of the driven cylindrical portion 43 of the pressing module 41 so as to surround the rotary shaft 13. The first spring 57 has a function of biasing the pressing module 41 downward.

<Lifting mechanism 60>
As shown to FIGS. 1-3, the raising / lowering mechanism 60 is provided with the cylinder apparatus 61, the rocking arm 63, and the raising / lowering member 67, and is comprised. The cylinder device 61 is disposed to the rear of the turret 15 and the pressing module 41, and has a rod 62 which protrudes upward with its axis directed vertically. The swinging arm 63 generally extends in the front-rear direction, and the rear end of the swinging arm 63 is connected to the upper end of the rod 62 so as to be relatively rotatable. The swinging arm 63 is provided so as to be able to swing in a seesaw shape by supporting the swinging shaft 64 in the left and right direction provided on the central frame 11 at a position close to the front end thereof.

  A bracket 65 is fixed to the central frame 11 and a guide bar 66 in the vertical direction is provided on the bracket 65. A lift member 67 is attached to the guide bar 66 so as to be movable up and down. The front end portion of the swing arm 63 is connected to the raising and lowering member 67 via a long hole so as to be capable of relative displacement. When the cylinder device 61 is driven to extend the rod 62, the front end portion of the swinging arm 63 is displaced downward, so the elevating member 67 is guided by the guide bar 66 and descends. When the cylinder device 61 is driven to contract the rod 62, the elevating member 67 is guided by the guide bar 66 and ascends.

  The lifting member 67 is provided with a pair of left and right bearings 68. The pair of support portions 68 is in a positional relationship opposite to the outer periphery of the upper end portion of the driven-side cylindrical portion 43 of the pressing module 41 so as to be sandwiched from the left and right. In a state where the elevating member 67 is positioned at the lowermost end in the elevating stroke, the driven side cylindrical portion 43 abuts on the upper end of the drive side cylindrical portion 16 by the elastic force (biasing force) of the first spring 57, and the support portion 68 is driven. It is separated downward from the locking projection 45 of the side cylindrical portion 43. Further, in a state where the raising and lowering member 67 is positioned at the uppermost end of the raising and lowering stroke, the support portion 68 supports the locking projection 45 from below, and the driven side cylindrical portion 43 (pressing module 41) Rising to a height above the top of). The height of the pressing member 48 (pressing module 41) in the vertical direction at this time is defined as a pressing release position (see FIG. 3).

  When the pressing module 41 is in the pressing release position, the pressing module 41 and the turret 15 can be rotated relative to each other. When the pressing module 41 is lowered with the pressing module 41 in the pressing release position and the four pressing members 48 and the four barrel tanks 30 being coaxial, the driven side connecting portion 44 of the pressing module 41 becomes the turret 15 The drive-side connecting portion 18 is fitted from above, and the pressing module 41 (the driven-side cylindrical portion 43) and the turret 15 (the driving-side cylindrical portion 16) are integrally rotatably coupled.

<Function of Centrifugal Barrel Polishing Machine G of Example 1>
When barrel polishing is performed, the lifting mechanism 60 is activated to raise the pressing module 41 to the pressing release position, and the revolving drive mechanism 23 is activated to rotate the turret 15 by 45 °, as shown by a solid line in FIG. In addition, the arm portion 46 is displaced to a position deviated in the circumferential direction with respect to the barrel tank 30. In this state, the operator manually lifts and takes out the barrel tank 30 in the barrel case 28, removes the lid 37 from the barrel main body 31, and works (not shown) and abrasive stones (not shown) in the barrel main body 31. Recover.

  Thereafter, when barrel polishing is performed, the work and the polishing stone are put into the empty barrel main body 31, the barrel main body 31 is accommodated in the barrel case 28, and the opening of the upper surface of the barrel main body 31 34 is covered with a lid 37. The operator manually performs the process of placing the lid 37 on the barrel body 31 in the barrel case 28.

  After that, the revolving drive mechanism 23 is activated to rotate the turret 15 by 45 °, and the four barrel tanks 30 are moved so as to be coaxial with the four pressing members 48. Next, the lifting mechanism 60 is activated, and the pressing module 41 is lowered by the elasticity of the first spring 57. In the process of lowering the pressing module 41, the lower surfaces of the four buffer members 50 abut against the upper surface of the eccentric absorbing member 39 of the lid 37 in a face-to-face contact state. The height of the pressing member 48 in the vertical direction when the pressing member 48 abuts on the eccentric absorbing member 39 and is regulated to be lowered is defined as a pressing position (see FIGS. 1, 2 and 10).

  Even after the pressing member 48 abuts on the upper surface of the lid 37 and stops the descent, the movable member 42 continues to descend integrally with the elevating member 67 by the elastic force (biasing force) of the first spring 57. During this time, although the elasticity of the first spring 57 decreases, the pressing member 48 in contact with the lid 37 stops lowering, so the elasticity of the second spring 51 increases. When the lower end of the driven-side cylindrical portion 43 abuts on the upper end of the drive-side cylindrical portion 16, the descent of the movable member 42 is stopped, and thereafter only the elevating member 67 is lowered.

  In the process in which the movable member 42 integrally descends with the elevating member 67, the driven side connecting portion 44 is in contact with the driving side connecting portion 18 immediately before the lower end of the driven side cylindrical portion 43 abuts the upper end of the driving side cylindrical portion 16 It fits in the state where the relative displacement to the circumferential direction was regulated. The press module 41 and the turret 15 are connected so as to be able to rotate integrally with each other by the engagement of the driven side connection portion 44 and the drive side connection portion 18. In the state where the pressing member 48 is in the pressing position and the pressing module 41 and the turret 15 are connected, the support portion 68 of the elevating mechanism 60 is disengaged downward from the locking projection 45 of the pressing module 41. It can rotate without interfering with the lifting member 67.

  In a state where the pressing member 48 is held at the pressing position, the biasing force of the first spring 57 and the biasing force of the four second springs 51 are four through the movable member 42 and the four movable pressing members 54. It acts as a downward pressing force on the lid 37. By the downward elastic pressing force, the lid 37 is restricted from rising inside with respect to the barrel main body 31, and is fixed in a state where relative rotation and positional deviation in the horizontal direction are restricted.

  In the state where the pressing member 48 is in the pressing position, if the height of the barrel tank 30 in the four barrel cases 28 varies, the height of the upper surface of the lid 37 (eccentric absorbing member 39) varies. However, since the variation in height is absorbed by the elastic deformation of the second spring 51, no gap is generated between the buffer member 50 of the pressing member 48 and the eccentric absorbing member 39 of the lid 37. Therefore, a downward elastic pressing force always acts on the lid 37 from the pressing member 48.

  When the pressing member 48 is in the pressing position (the lid 37 is fixed to the barrel main body 31), the elastic pressing force applied by the first spring 57 to the four lids 37 via the pressing module 41 is four. The second spring 51 has a value larger than the total force (total force) of the four elastic pressing forces individually applied to the four lids 37. By setting the spring constants of the first spring 57 and the second spring 51 in this manner, even if there is variation in the amount of elastic deformation of the four second springs 51, there is no variation in the amount of elastic deformation of the first spring 57. The movable member 42 of the pressing module 41 is not displaced in the vertical direction.

  After the barrel polishing is completed, the direction of the rotational direction of the turret 15 and the pressing module 41 is detected by a sensor (not shown), and the locking projection 45 of the pressing module 41 is aligned with the support portion 68 of the elevating mechanism 60 in the circumferential direction. At this position, the turret 15 and the pressing module 41 are stopped. Thereafter, the lifting mechanism 60 is activated to lift the locking projection 45 from below by the support portion 68, and the pressing member 48 (pressing module 41) is lifted to the pressing release position, and the turret 15 is rotated 45 °. After this, the barrel tank 30 may be removed from the barrel case 28 to recover the polished work and the polishing stone.

<Effect of Centrifugal Barrel Polishing Machine G>
The centrifugal barrel polishing machine G according to the first embodiment includes a turret 15 which is rotationally driven about a rotating shaft 13 in the vertical direction, a barrel main body 31 having an opening 34 on the upper surface, and a lid 37 for opening and closing the opening 34. The plurality of barrel tanks 30 rotatably provided at the eccentric position of the turret 15 and capable of planetary rotation, a pressing member 48 capable of facing the upper surfaces of the plurality of lids 37, and the plurality of lids 37 via the pressing members 48 And a first spring 57 capable of applying a downward elastic pressure.

  According to this configuration, if the lid 37 is placed over the opening 34 on the upper surface of the barrel main body 31 and the elastic pressing force of the first spring 57 is applied to the lid 37 via the pressing member 48, the lid 37 can be attached to the barrel main body 31 It is fixed. Compared with the case where the lid 37 is fixed to the barrel main body 31 by tightening the bolt and the nut, the workability of attaching and detaching the lid 37 to the barrel main body 31 is excellent.

  Further, the lifting mechanism 60 provided in the centrifugal barrel polishing machine G retracts the pressing member 48 upward from the pressing position and the pressing position for applying the elastic pressing force of the first spring 57 to the lid 37. This is a device for moving the lid 37 up and down between a pressure release position where the lid 37 is released from the elastic pressing force by the first spring 57. By providing such a lifting mechanism 60, there is no need to manually release the elastic pressing force, and therefore, the workability of opening and closing the lid 37 and attaching and detaching the barrel tank 30 is good.

  In addition, the centrifugal barrel polishing machine G is provided directly connected to the turret 15 and includes a revolving drive mechanism 23 that rotationally drives the turret 15. Further, the turret 15 is provided with a drive side connecting portion 18, and the pressing module 41 is provided with a driven side connecting portion 44. When the pressing member 48 is in the pressing position, the drive-side connecting portion 18 and the driven-side connecting portion 44 connect the pressing member 48 (pressing module 41) to the turret 15 so as to synchronously rotate, and the pressing member 48 is in the pressing release position. At this time, the connection between the pressing member 48 (the pressing module 41) and the turret 15 is released.

  The technical significance of this configuration is as follows. If the revolving drive mechanism 23 is provided directly to the pressing member 48, there is a concern that the structure of the elevating mechanism 60 for moving the pressing member 48 up and down becomes complicated. Therefore, a connecting portion (the driving side connecting portion 18 and the driven side connecting portion 44) capable of connecting and releasing the connection between the pressing member 48 and the turret 15 is provided, and the revolving drive mechanism 23 is directly connected to the turret 15. As a result, the lifting mechanism 60 can be simplified.

  In addition, the pressing member 48 can follow the barrel tank 30 and can make a planetary rotation in a state where the lid 37 is pressed. According to this configuration, while the barrel tank 30 is in planetary rotation, even if an elastic pressing force is applied from the pressing member 48 to the lid 37, the pressing member 48 performs planetary rotation following the barrel tank 30. . Therefore, there is no possibility that the rotation of the barrel tank 30 is hindered.

  Further, an elastically deformable eccentric absorption member 39 is provided in the contact area with the pressing member 48 (that is, the contact area between the lid 37 and the pressing member 48) on the upper surface of the lid 37. According to this configuration, while the barrel tank 30 and the pressing member 48 are integrally planet-rotated, misalignment occurs between the rotation shaft 24 of the barrel tank 30 and the rotation center (following shaft 49) of the pressing member 48 Even if it occurs, the eccentric absorption member 39 can absorb misalignment due to elastic deformation.

  Further, the pressing member 48 is provided with a second spring 51 capable of elastic deformation in the vertical direction and capable of absorbing the positional deviation between the pressing member 48 and the lid 37 in the vertical direction. According to this configuration, the second spring 51 elastically deforms to thereby absorb the positional deviation between the pressing member 48 and the lid 37 in the vertical direction, so that the lid 37 is reliably fixed to the barrel main body 31. can do.

  In addition, the centrifugal barrel polishing machine G includes a pressing module 41 provided with a plurality of pressing members 48 so as to be able to integrally revolve via the movable member 42. According to this configuration, the number of parts can be reduced as compared to the case where the plurality of first springs 57 individually corresponding to the plurality of pressing members 48 are provided.

Other Embodiments
The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the eccentric absorption member is provided in the contact area between the pressing member and the lid. However, such an eccentric absorption member may not be provided.
(2) In the above embodiment, the displacement absorbing member is provided on the pressing member. However, such a displacement absorbing member may not be provided.
(3) In the above embodiment, the number of closing lid elastic members is one by integrating a plurality of pressing members, but a plurality of closing lid elastic members are individually provided for the plurality of pressing members. It is also good.
(4) In the above embodiment, the barrel tank is accommodated in the barrel case, but the barrel tank may be attached directly to the turret.
(5) In the above embodiment, the elevating mechanism for raising and lowering the pressing member between the pressing position and the releasing position is provided. However, without providing such an elevating mechanism, the pressing member may be manually lifted and lowered. Good.
(6) In the above embodiment, the eccentric absorption member is provided in the contact area (upper surface of the lid) with the pressing member in the lid, but the eccentric absorption member is in the contact region (lower surface of the pressing member) with the lid in the pressing member You may provide. In this case, by using a urethane resin as the eccentric absorption member and providing a buffer member made of polyacetal resin on the lid side, it is possible to prevent the eccentric absorption member from sticking to the lid (buffer member). In addition, the eccentric absorption member may be provided on both the pressing member and the lid.

G ... centrifugal barrel grinding machine 13 ... rotating shaft 15 ... turret 18 ... drive side connection part (connection part)
23 ... Drive mechanism for revolution 30 ... Barrel tank 31 ... Barrel main body 34 ... Opening part of barrel main body 37 ... Lid 39 ... Eccentric absorption member 41 ... Pressing module 44 ... Followed side connection part (connection part)
48 ... pressing member 51 ... second spring (misalignment absorbing member)
57 ... 1st spring (elastic member for lid)
60 ... lifting mechanism

Claims (7)

A turret which is driven to rotate about a vertical rotation axis;
A plurality of barrel tanks provided with a barrel main body having an opening on the upper surface and a lid for opening and closing the opening, and rotatably provided at an eccentric position of the turret for planetary rotation;
A pressing member capable of facing the upper surfaces of the plurality of lids;
And a closing lid elastic member capable of applying a downward elastic pressing force to the plurality of lids via the pressing member.   From the pressing position where the pressing member applies the elastic pressing force of the closing lid elastic member to the lid, and from the pressing position, the pressing member retracts upward and the lid is elastically pressed by the closing lid elastic member. The centrifugal barrel polishing machine according to claim 1, further comprising an elevating mechanism for raising and lowering the pressure release position to the release position. A revolving drive mechanism provided directly connected to the turret and rotationally driving the turret;
A connecting portion for connecting the pressing member to the turret so as to be able to synchronously rotate when the pressing member is in the pressing position, and releasing the connection between the pressing member and the turret when the pressing member is in the pressing release position The centrifugal barrel polishing machine according to claim 2, characterized in that   The centrifugal barrel polishing machine according to any one of claims 1 to 3, wherein the pressing member is capable of planetary rotation so as to follow the barrel tank in a state in which the lid is held down. .   The centrifugal barrel polishing machine according to claim 4, further comprising: an elastically deformable eccentric absorbing member provided in a contact area between the lid and the pressing member.   6. The apparatus according to claim 1, further comprising: a displacement absorbing member provided on the pressing member so as to be elastically deformable and capable of absorbing the vertical displacement between the pressing member and the lid. The centrifugal barrel polishing machine according to any one of the items.   The centrifugal barrel polishing machine according to any one of claims 1 to 5, further comprising: a pressing module in which a plurality of the pressing members are integrally provided so as to be able to revolve.

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