JP2019130642A - Cylinder polishing device - Google Patents

Abstract

To provide a cylinder polishing device capable of making the whole of the device compact, beautifully finishing the polishing and performing the polishing highly efficiently.SOLUTION: A cylinder polishing device transports a covered cylindrical work-piece W according to rotation feeding of an index table 9, stops on an indexing position T and rotates the work-piece to polish an upper surface Wc and an outer circumferential surface. Therein, an upper surface polishing means 5 for polishing the upper surface arranges a first delivery reel 41 for retaining a rough roll paper 40 and a second delivery reel 61 for retaining a finishing roll paper 60 so as to be parallel to each other, arranges a first winding reel 44 for winding drawn rough roll paper and a second winding reel 64 for winding drawn finishing roll paper so as to be parallel to each other and arranges the first delivery reel and the second delivery reel, and the first winding reel and the second winding reel on different positions in upper and lower directions over an upper surface finishing polishing dividing position T6 from a prescribed upper surface rough polishing dividing position T4.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cylindrical polishing apparatus.

  2. Description of the Related Art Conventionally, there has been a polishing apparatus that circularly travels an endless polishing belt and polishes a workpiece conveyed by a belt conveyor (see, for example, Patent Document 1).

Japanese National Patent Publication No. 2-500026

However, in the conventional polishing apparatus, when the rough polishing process and the finish polishing process are performed, it is necessary to frequently exchange the rough polishing belt and the finish polishing belt. There is also a problem that the entire polishing apparatus is increased in size because it is necessary to arrange the apparatus and the apparatus that causes the finishing polishing belt to travel in an annular manner in the traveling direction of the belt conveyor. Further, since the same polishing surface of the polishing belt is repeatedly used, there is a possibility that the workpiece is polished in a state where foreign matters such as polishing powder adhere to the polishing belt or the polishing belt is worn. For example, when a large amount of workpieces are polished, there is a problem that the polishing finish (aesthetic appearance) such as glossiness and smoothness is different at the start of the polishing operation and after a predetermined time of the polishing operation.
Therefore, the present inventor has conducted trial and error and research on a polishing apparatus combined with an index table by applying a preferable roll paper to always stably and beautifully polish a workpiece without using a polishing part only once in a polishing operation. I went.
However, the roll paper is wound around a reel in a roll state, intermittently pulled out from the reel, temporarily stopped corresponding to the part to be polished of the workpiece, polished, and disposable once.
When applied to the index table, there is a problem that if the reel diameter is not sufficiently large, the roll paper replacement frequency is increased, the rotation of the index table must be stopped in a short work time, and the polishing operation must be stopped. Therefore, it is necessary to use a reel having a sufficiently large diameter, but it is necessary for rough polishing and finish polishing, and such rough polishing and finishing along the outer periphery of the index table having a predetermined diameter. There arises a problem that it is very difficult to install the sufficiently large reel for polishing.

  SUMMARY OF THE INVENTION Accordingly, the present invention aims to provide a cylindrical polishing apparatus capable of reducing the overall size of the apparatus, further achieving a beautiful polishing finish and performing high-efficiency polishing.

The cylindrical polishing apparatus of the present invention conveys a covered cylindrical workpiece having a ceiling wall portion and a cylindrical wall portion by intermittent rotational feed for each predetermined pitch angle of the index table, and the indexing position for each predetermined pitch angle. A cylindrical polishing apparatus for polishing the work upper surface and the work outer peripheral surface by rotating the work around a vertical axis, and the upper surface polishing means for polishing the work upper surface rolls a rough roll paper. A first feed reel for holding the roll paper and a second feed reel for holding the finishing roll paper in a roll shape are concentrically arranged side by side, and the coarse roll paper drawn in a strip shape is rolled. A first take-up reel for taking up in a strip shape and a second take-up reel for taking up the finish roll paper drawn out in a strip shape in a concentric manner; The first feeding reel and the second feeding reel, and the concentric first winding reel and the second winding reel are arranged at different positions in the vertical direction, and predetermined upper surface rough polishing indexing is performed. It is arranged from the position to the index position for top surface finishing polishing.
Further, the upper surface polishing means fixes a rotating shaft driven to rotate by a first winding motor to one of the concentric first winding reel and the second winding reel, and the second winding reel to the other winding. The rotary shaft is driven to rotate by a take-up motor, and a hollow shaft that is externally fitted is fixed to the rotary shaft so that the first take-up reel and the second take-up reel have different take-up torques. It is configured to be rotationally driven.

The index table includes a pedestal member disposed at the predetermined pitch angle and having an inner peripheral clamp portion that holds the cylindrical wall portion of the workpiece, and the inner peripheral clamp portion has the vertical axis. A driven friction clutch disk provided at a lower position of the index table so as to correspond to a predetermined indexing position is brought into contact with a driven friction clutch disk provided at a lower end of the pedestal member. Thus, the work held by the inner peripheral clamp portion is configured to be rotationally driven around the vertical axis.
The cleaning pressing member includes an endless cleaning belt for wiping off foreign matters from the workpiece, and a cleaning pressing member for pressing the cleaning belt against the upper corner portion of the workpiece. The cleaning pressing member has an L-shaped cross section. The cleaning belt is deformed into a L-shaped cross section and pressed against the upper corner portion of the workpiece to wipe off foreign matter adhering to the upper surface of the workpiece and the outer peripheral surface of the workpiece. It is.

  According to the present invention, polishing with a beautiful finish such as gloss and smoothness can be performed. In other words, the work can be made attractive and excellent in appearance quality. Large-diameter roll paper (reel) can be used, and the roll paper needs to be replaced less frequently. It is excellent in productivity and workability and can be polished with high efficiency. The entire apparatus can be made compact while a large number of workpieces can be polished quickly and continuously.

It is a top view which shows one Embodiment of this invention. It is a figure which shows an example of a base member, Comprising: (a) is a principal part sectional side view, (b) is a principal part sectional top view. It is a principal part cross-sectional side view which shows an example of a clutch drive means. It is a figure which shows an example of an upper surface grinding | polishing means, Comprising: (a) is a principal part top view, (b) is a X direction arrow directional view of (a), (c) is a Y direction arrow of (a). FIG. It is a principal part sectional side view which shows an example of an upper surface grinding | polishing means. It is a top view which shows the other example of an outer peripheral surface finish grinding | polishing means. It is a figure which shows an example of a workpiece | work cleaning means, Comprising: (a) is a side view, (b) is a Z direction arrow directional view of (a). It is a perspective view which shows a workpiece | work, Comprising: (a) is a perspective view which shows an example of a workpiece | work, (b) is a perspective view which shows the other example of a workpiece | work. It is a perspective view which shows an example of roll paper. It is a perspective view which shows an example of a grinding wheel.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in FIG. 8, the cylindrical polishing apparatus according to the present invention polishes a workpiece upper surface Wc and a workpiece outer peripheral surface Wd of a covered cylindrical workpiece W having a circular ceiling wall portion Wa and a cylindrical wall portion Wb. It is a device.
As shown in FIG. 8A, the covered cylindrical workpiece W is a cover cylinder or the like in which the ceiling wall portion Wa has a through hole Wj in the center (the ceiling wall portion Wa is an annular circular plate). Alternatively, as shown in FIG. 8B, the ceiling wall portion Wa is a container lid, a protective cap, or the like that does not have the through hole Wj (the ceiling wall portion Wa is a hole-free circular plate shape).

As shown in FIG. 1, an index table 9 (hereinafter referred to as an index table 9) that transports a workpiece W by intermittent rotation about a predetermined pitch angle θ around a vertical table axis L9 and stops at an index position T for each predetermined pitch angle θ. , Sometimes referred to as table 9).
In FIG. 1, the predetermined pitch angle θ is set to 36 degrees. That is, the table 9 is provided so as to rotate and stop intermittently every 36 degrees and make one round with 10 intermittent feeds. Note that the number of index positions T in the example is an example, and may be, for example, equal to 8 (the predetermined pitch angle θ is 45 degrees) or the like.

One of the plurality of index positions (stations) T, T is set as an index position T1 for supplying a workpiece for supplying the workpiece W to the table 9.
Then, from the workpiece supply index position (first index position) T1 to the table rotation direction N, the workpiece check index position (second index position) T2, the outer peripheral surface rough polishing index position ( Third index position) T3, top rough polishing index position (fourth index position) T4, unused index position (fifth index position) T5, top surface finish polishing index position (sixth index position) Indexing position) T6, indexing position for outer surface finish polishing (seventh indexing position) T7, indexing position for workpiece cleaning (eighth indexing position) T8, spare indexing position (ninth indexing position) T9 The work discharge indexing position (10th indexing position) T10.

  The process (work) performed at each indexing position T described above is an example. For example, the rough polishing process of the workpiece outer peripheral surface Wd is performed more than the indexing position T for finish polishing the workpiece outer peripheral surface Wd. It only needs to be on the upstream side. For example, it may be on the downstream side of the index position T for finishing and polishing the work upper surface Wc. Further, the step of finish polishing the work outer peripheral surface Wd may be provided on the downstream side of the index position T for rough polishing the work outer peripheral surface Wd. For example, the index position for rough polishing the work upper surface Wc. It may be upstream of T. The process of cleaning the workpiece W may be performed on the downstream side of all the polishing index positions T.

  As shown in FIG. 2A, a pedestal member 90 for holding the workpiece W is provided on the outer peripheral edge of the table 9. Although not shown in FIG. 1, the pedestal member 90 is equally distributed around the table axis L9 with a predetermined pitch angle θ. That is, ten base members 90 are provided on the table 9.

As shown in FIG. 2, the pedestal member 90 includes an inner peripheral clamp portion 91 composed of a three-claw chuck that holds the inner peripheral surface of the cylindrical wall portion Wb of the workpiece W, and holds the inner peripheral clamp portion 91. And a base portion 92 that is rotatably supported (held) around a vertical axis L90.
In addition, as shown in FIG. 2 (b), the base member 90 has a taper-like outer peripheral surface for moving the claw member 91a of the inner peripheral clamp portion 91 in the radial direction, and is capable of reciprocating vertically. The upper and lower transmission shaft member 93 is provided.

Further, the base member 90 is connected to the inner peripheral clamp portion 91 and has a transmission rotary shaft 94 having a lower end 94b disposed on the lower surface side of the table 9, and a driven friction clutch disk 95 fixed to the lower end 94b of the transmission rotary shaft 94. And. When the driven friction clutch disc 95 provided at the lower end of the pedestal member 90 rotates, the inner peripheral clamping portion 91 is configured to rotate around the vertical axis L90 via the transmission rotating shaft 94.
Although not shown in FIG. 2 (a), the vertical transmission shaft member 93 for operating the inner periphery clamping portion 91 between the clamped state and the unclamped state is provided on the transmission rotating shaft 94 and the driven friction clutch disc 95. It is disposed in the center hole in a penetrating manner, and is provided so as to be able to reciprocate up and down independently of the transmission rotating shaft 94 and the driven friction clutch disc 95.

Then, a vertical movement (not shown) for moving the vertical transmission shaft member 93 up and down to the lower position of the table 9 so as to correspond to the workpiece supply index position T1 and the workpiece discharge index position T10, respectively. Operation means are provided.
At the workpiece supply index position T1, the vertical movement operating means operates the vertical movement of the lower end of the vertical transmission shaft member 93 to switch the inner peripheral clamping portion 91 from the unclamped state to the clamped state (claw member 91a). Is moved from the radially inward position to the radially outward position) so that the workpiece axis is aligned with the vertical axis L90, so that the workpiece W can be held on the lining.
At the workpiece discharge index position T10, the vertical movement operating means moves the lower end of the vertical transmission shaft member 93 up and down to switch from the clamped state to the unclamped state (the claw member 91a is moved from the radial outer position). It is configured to release the lining holding (clamping) of the work W by moving it to the radial inward position.

  Then, the table 9 is adapted to correspond to predetermined index positions (second, third, fourth, sixth, seventh, eighth index positions T2, T3, T4, T6, T7, T8, etc.). As shown in FIG. 3, a clutch drive means 11 having a drive friction clutch panel 96 is provided at a lower position.

The clutch drive means 11 includes a drive friction clutch disc 96, a rotary slide shaft 97 having an upper end 97a fixed to the drive friction clutch disc 96, and a spline center hole portion 98d that meshes with a spline shaft portion 97d of the rotary slide shaft 97. And a vertical movement member 99 that rotatably supports the lower end portion 97b of the rotary slide shaft 97 from below.
The rotary slide shaft 97 and the cylindrical member 98 are rotatable around a vertical clutch axis La that is coaxial (in the same shape) with the vertical axis L90 of the base member 90 stopped at a predetermined index position T. It is supported (held) by a bearing member or the like. The rotary slide shaft 97 is held by a stroke bearing 100 or the like so as to be slidable in the vertical direction.

  The clutch driving means 11 transmits power to a first clutch motor Ma for rotating the cylindrical member 98 around the clutch axis La, and a pulley and a sprocket fixed to the drive shaft of the first clutch motor Ma. First rotating body 19 for transmission, second rotating body 17 for power transmission such as pulleys and sprockets fixed to cylindrical member 98, and belts and chains suspended on first and second rotating bodies 19 and 17 And an endless flexible member 18 for transmitting rotational force.

  Further, the clutch driving means 11 is fixed to a second clutch motor Mb such as a servo motor for raising (moving up and down) the vertical movement member 99 and a rotary shaft of the second clutch motor Mb. And an eccentric cam member 16 that is always in sliding contact with the lower surface 99b.

  Further, the drive friction clutch disk 96 and the driven friction clutch disk 95 are separated from each other with a predetermined minute gap dimension G in a standby state (non-contact state). The minute gap dimension G is preferably set to 0.5 mm or more and 1 mm or less. If it is less than the lower limit, there is a risk of malfunction due to contact by mistake due to vibration or the like. When the upper limit is exceeded, it takes time to switch between the connected state and the disconnected state (ON-OFF).

  When the first clutch motor Ma is rotationally driven, the clutch driving means 11 rotates the cylindrical member 98, and the rotational force is transmitted to the rotary slide shaft 97 by spline coupling. The rotary slide shaft 97 is connected to the clutch axis La. Rotate around. Further, when the rotation shaft of the second clutch motor Mb rotates (rotates) in one direction by a predetermined rotation angle, the lower surface 99b of the vertical movement member 99 is pressed upward by the outer surface (cam surface) of the eccentric cam member 16. Is done. Since the rotary slide shaft 97 is splined with the cylindrical member 98 (receives rotational force from the cylindrical member 98), it rises while rotating. The driving friction clutch disc 96 in the rotating state comes into contact with the driven friction clutch disc 95, rotates the driven friction clutch disc 95, and the work W held by the inner peripheral clamp portion 91 together with the inner peripheral clamp portion 91 is It is driven to rotate around the vertical axis L90 (see FIG. 2).

  When the rotation shaft of the second clutch motor Mb further (intermittently) further rotates, the vertical movement member 99 is lowered by its own weight, and the driving friction clutch disk 96 is separated from the driven friction clutch disk 95, and the inner circumference. The rotation of the clamp part 91 (work W) stops.

Here, the configuration of the cylindrical polishing apparatus of the present invention will be described together with the operation (action) at each index position T.
In FIG. 1, a workpiece supply means 1 such as a parts feeder or a handling device is disposed (corresponding) at a workpiece supply index position (first index position) T1.
The workpiece supply means 1 includes a conveying device such as a parts feeder and a conveyor that can convey the workpiece W toward the table 9 from the radially outer region of the table 9, and a base member 90 that is stopped at the first index position T1. Is provided with a handling device capable of placing the workpiece W on the inner peripheral clamp portion 91 thereof.

  That is, at the first index position T1, the workpiece W is placed on the pedestal member 90, the claw member 91a of the inner peripheral clamp portion 91 moves radially outward, and the inner surface (inner peripheral surface) of the workpiece W is lined. Clamp to the shape. In this clamped state, the table 9 rotates in the rotation direction N, and the pedestal member 90 holding the workpiece W moves to the second index position T2.

Next, a workpiece confirmation means 2 such as a sensor is arranged (corresponding) to the workpiece confirmation index position (second index position) T2.
The workpiece check means 2 determines whether or not the workpiece W is placed on the inner peripheral clamp portion 91 (whether or not there is a workpiece), and whether or not the workpiece W is clamped in an appropriate (proper) posture on the inner peripheral clamp portion 91. A confirmation sensor for detecting whether or not (work posture) is provided.
The confirmation sensors are a transmissive sensor and a reflective sensor.

  At the second index position T2, the presence / absence of the workpiece W and whether the posture of the workpiece W is appropriate are detected. When it is detected that there is a workpiece and the posture of the workpiece W is appropriate, the table 9 rotates and transports the workpiece W to the third index position T3.

Next, the outer peripheral surface rough polishing means 3 for rough polishing the work outer peripheral surface Wd is disposed (corresponding) at the outer peripheral surface rough polishing index position (third index position) T3.
The outer peripheral surface rough polishing means 3 is configured such that the base member 90, the clutch driving means 11 provided corresponding to the third indexing position T3, and the outer peripheral rough polishing wheel 39 are rotatable about a vertical rotation axis L3. And a rough polishing machine 30 for holding.

  The rough polishing machine 30 is provided with a peripheral rough polishing wheel 39 so as to be capable of reciprocating in the radial direction of the table 9. In other words, the outer peripheral rough polishing wheel 39 is provided so as to be able to approach and separate from the outer peripheral surface Wd of the workpiece W held on the base member 90. Further, the outer peripheral roughing polishing wheel 39 is provided so as to be movable in the vertical direction (work axis direction).

  That is, at the third index position T3, the drive friction clutch disk 96 is brought into contact with the driven friction clutch disk 95 of the base member 90 that is transported from the second index position T2 and stopped at the third index position T3. Then, the workpiece W is driven to rotate around the vertical axis L90 (see FIGS. 2 and 3). Then, the outer peripheral surface Wd rotating around the rotation axis L3 is brought into contact with the outer peripheral surface Wd of the rotating workpiece W to perform rough polishing of the outer peripheral surface Wd (outer peripheral rough polishing step). ). After the elapse of a predetermined time, the outer peripheral rough polishing wheel 39 (outer peripheral rough polishing machine 30) is moved (retracted) outward in the table radial direction and the drive friction clutch disc 96 is separated. Thereafter, the table 9 is rotated, and the pedestal member 90 holding the workpiece W is conveyed to the fourth indexing position T4.

As shown in FIGS. 1 and 4, the upper surface polishing means 5 is moved from the upper surface rough polishing index position (fourth index position) T4 to the upper surface finish polishing index position (sixth index position) T6. It is arranged.
The upper surface polishing means 5 includes a base member 90, clutch driving means 11 provided corresponding to the fourth and sixth index positions T4 and T6, and a region extending from the fourth index position T4 to the sixth index position T6. And an upper surface roll paper driving device 50 arranged so as to correspond to the above.

  As shown in FIG. 4, the upper surface roll paper driving machine 50 includes a first feeding reel 41 that holds a long rough roll paper (rough polishing roll paper) 40 in a roll shape, and a roll shape on the first feeding reel 41. A first feeding roller unit 42 for pulling out the rough roll paper 40 held in the belt shape, and a base member in which the outer surface (polishing surface) of the rough roll paper 40 drawn in the belt shape is stopped at the fourth index position T4. A first pressing member 43 for pressing against the upper surface Wc of the workpiece W held around 90 and rotating around the workpiece axis (vertical axis L90), and air for applying a pressing force to the first pressing member 43 A first actuator 46 such as a cylinder, and a first take-up reel 44 for winding the belt-like rough roll paper 40 after being pressed against the work upper surface Wc into a roll shape are provided.

Further, a second feed reel 61 for holding a long finish roll paper (finish polishing roll paper) 60 in a roll shape, and a finish roll paper 60 held in a roll shape on the second feed reel 61 are belt-shaped. The second feeding roller unit 62 for pulling out and the outer surface (polishing surface) of the finishing roll paper 60 pulled out in a belt shape are held by the base member 90 stopped at the sixth indexing position T6 and rotated around the workpiece axis. A second pressing member 63 for pressing the upper surface Wc of the workpiece W to be pressed, a second actuator 66 such as an air cylinder for applying a pressing force to the second pressing member 63, and after being pressed by the upper surface Wc of the workpiece And a second take-up reel 64 for winding the belt-like finish roll paper 60 into a roll.
1, 4 </ b> A, and 4 </ b> C, the roll papers 40 and 60 and the feeding roller units 42 and 62 are not shown. In FIG. 4C, the base member 90 at the fifth index position T5 is not shown.

  The first supply reel 41 and the second supply reel 61 are arranged concentrically (rotatable around the horizontal supply reel axis Le), and the first take-up reel 44 and the second take-up reel. 64 are arranged concentrically (rotatable around a horizontal take-up reel axis Lf), and the concentric first reel 41 is positioned below the concentric first reel 41 and second reel 61. A take-up reel 44 and a second take-up reel 64 are provided. Four reels 41, 44, 61, 64 are provided on one reel holding member 59.

Further, the concentric first feeding reel 41 and the second feeding reel 61 and the concentric first winding reel 44 and the second winding reel 64 are moved from the fourth indexing position T4 to the sixth indexing position T6. It is arranged over.
In other words, the reels 41, 44, 61, and 64 are placed above the pedestal member 90 stopped at the fourth indexing position T4 and the pedestal member 90 stopped at the sixth indexing position T6. Arranged.

Further, the first supply reel 41 and the first take-up reel 44 are disposed on the far side (rear side) from the table axis L9, and the second supply reel 61 and the second take-up reel 64 are connected to the table axis L9. It is arrange | positioned at the side (front side) near.
Here, the supply reel axis Le and the take-up reel axis Lf are parallel to each other, and the direction along the reel axis Le and Lf may be referred to as the reel front-rear direction. A direction orthogonal to the front-rear direction of the reel in plan view is referred to as a left-right direction of the reel.

  The first feeding roller unit 42 and the second feeding roller unit 62 are respectively provided with feed rollers 42a and 62a that are intermittently rotated by a fixed-length feed servo motor, and the roll papers 40 and 60 to the feed rollers 42a and 62a. Press rollers 42b and 62b, and pressing members 42c and 62c such as an elastic urging member for pressing the press rollers 42b and 62b toward the feed rollers 42a and 62a.

The first feeding roller unit 42 and the second feeding roller unit 62 are disposed at different positions in the front-rear direction of the reel. The first feeding roller unit 42, the first feeding reel 41, and the first take-up reel 44 are disposed at the same position in the front-rear direction of the reel.
The second supply roller unit 62, the second supply reel 61, and the second take-up reel 64 are disposed at the same position in the front-rear direction of the reel.

  The first pressing member 43 and the second pressing member 63 are fixed to the lower end portions of the rods (moving up and down) of the first and second actuators 46 and 66, respectively. The first pressing member 43 and the second pressing member 63 are flat planar plate pieces, which are also called pressing plate members or platen members, and have a pressure applying surface made of a low friction material.

  Further, in the vicinity of both sides of the first pressing member 43 and the second pressing member 63 in the left-right direction of the reel, the horizontal surface of the horizontal upper surface Wc or the horizontal shape of the first pressing member 43 and the second pressing member 63 is provided. A pair of auxiliary rollers 45, 45, 65, 65 for holding the respective roll papers 40, 60 are disposed in a plane parallel to the lower surface of the roller.

  Further, in order to prevent the first feeding reel 41 and the second feeding reel 61 from rotating excessively due to inertia and causing the roll papers 40 and 60 to be complicated, the first feeding reel 41 and the second feeding reel 61 are The common feeding shaft 58 attached in an outer fitting shape is given a predetermined rotational resistance force (rotational braking force), and receives the belt feeding force (tension) from the first and second feed rollers 42a and 62a. In response, each roll paper 40, 60 is sent out.

Further, as shown in FIG. 5, a rotary shaft 51 that is rotationally driven by the first take-up motor M1 is fixed to the second take-up reel 64, and the first take-up reel 44 is attached to the second take-up motor M2. The hollow shaft 52 that is externally fitted to the rotating shaft 51 is fixed. Both the first winding motor M1 and the second winding motor M2 are torque motors.
That is, the first take-up reel 44 is rotated by the second take-up motor M2, and the second take-up reel 64 is driven by the first take-up motor M1, so that the first take-up reel 44 and the second take-up reel 44 are rotated. The take-up reel 64 is rotationally driven with different take-up torques.

The rotating shaft 51 is arranged concentrically (upper) with the rotating shaft of the first winding motor M1, and is linked and connected in series via a coupling member.
The hollow shaft 52 and the rotation shaft of the second take-up motor M2 are arranged in parallel, and a driven rotary body 53 such as a pulley or a sprocket that is fixed to the hollow shaft 52 in an outer fitting manner, and a second Drive-side rotating body 54 such as a pulley or a sprocket that is fixed to the rotation shaft of the winding motor M2 and an annular belt or chain suspended from the driven-side rotating body 53 and the driving-side rotating body 54. The rotational driving force of the second winding motor M2 is transmitted to the hollow shaft 52 by the flexible power transmission member 55.

  In FIG. 4, at the fourth indexing position T4, the long coarse roll paper 40 is intermittently fed by the first feeding roller unit 42 before the pedestal member 90 is conveyed from the third indexing position T3. In FIG. 5, a portion having an unused polished surface is drawn out in a band shape, sent to a position below the first pressing member 43, and stopped (standby). Then, the drive friction clutch disk 96 is brought into contact with the driven friction clutch disk 95 of the base member 90 which has been transported from the third index position T3 and stopped at the fourth index position T4, and the workpiece W is moved around the vertical axis L90. Drive to rotate. Then, the first pressing actuator is extended so that the first pressing member 43 brings the rough roll paper 40 into contact with (presses on) the workpiece upper surface Wc that is rotationally driven about the vertical axis L90. Rough polishing is performed (upper surface rough polishing step). After a predetermined time has elapsed, the first pressing member 43 is moved upward and the drive friction clutch panel 96 is separated. Thereafter, the table 9 is rotated and the workpiece W is conveyed to the fifth indexing position T5. In addition, before rotating the table 9 or during the rotation of the table, a portion having an unused polishing surface in the rough roll paper 40 is intermittently moved by the first feeding roller unit 42 below the first pressing member 43. Send to position and stop (standby).

  At the fifth index position T5, the workpiece W is not polished and waits for a predetermined time. After waiting for a predetermined time, the table 9 rotates and the workpiece W is conveyed to the sixth indexing position T6. By providing the fifth index position T5 in this way, each reel 41, 44, 61, 64 can have a larger diameter.

  In the sixth indexing position T6, before the base member 90 is conveyed from the fifth indexing position T5, the second finishing roller unit 62 intermittently feeds and is not used in the long finishing roll paper 60. The portion having the polished surface is drawn out in a band shape, sent to a position below the second pressing member 63, and stopped (standby). The drive friction clutch disc 96 is brought into contact with the driven friction clutch disc 95 of the pedestal member 90 to rotate the workpiece W. Then, the finishing roll paper 60 is brought into contact with the rotating work upper surface Wc by the second pressing member 63 to perform upper surface finishing polishing (upper surface finishing polishing step). After a predetermined time has elapsed, the second pressing member 63 is moved upward and the drive friction clutch panel 96 is separated. Thereafter, the table 9 is rotated, and the workpiece W is conveyed to the seventh index position T7. In addition, before the table 9 is rotated or during the table rotation, the portion having the unused polishing surface in the finishing roll paper 60 is moved below the second pressing member 63 by the intermittent feeding of the second feeding roller unit 62. Send to position and stop (standby).

  Also, when the feed amounts of the first feeding roller unit 42 and the second feeding roller unit 62 are set to be equal, and the lengths of the rough roll paper 40 and the finishing roll paper 60 are made equal, the timing at which the end of the belt is reached. As a result, the number of stops of the device for belt replacement can be reduced (it can be operated efficiently).

Next, as shown in FIG. 1, an outer peripheral surface finish polishing means 7 for finish polishing the workpiece outer peripheral surface Wd is disposed at the outer peripheral surface finish polishing index position (seventh index position) T7. (I correspond).
The outer peripheral surface finishing polishing means 7 is configured such that the base member 90, the clutch driving means 11 provided corresponding to the seventh indexing position T7, and the outer peripheral finishing polishing wheel 79 are rotatable about a vertical rotation axis L7. And a peripheral finish polishing machine 70 for holding.

  The outer periphery polishing machine 70 is provided with an outer periphery polishing wheel 79 so as to be reciprocally movable in the radial direction of the table 9. That is, the outer peripheral finishing polishing wheel 79 is provided so as to be able to approach and separate from the outer peripheral surface Wd of the workpiece W held on the base member 90. Further, a polishing wheel 79 for finishing the outer periphery is provided so as to be movable in the vertical direction (work axis direction).

  At the seventh index position T7, the drive friction clutch disc 96 is brought into contact with the driven friction clutch disc 95, and the workpiece W is rotated about the vertical axis L90. Then, the outer peripheral surface Wd rotating around the rotation axis L7 is brought into contact with the outer peripheral surface Wd of the rotating workpiece W, and the workpiece outer peripheral surface Wd is subjected to finish polishing. After a predetermined time has passed, the outer peripheral finishing polishing wheel 79 is moved radially outward of the table 9 and the drive friction clutch disc 96 is separated. Thereafter, the table 9 is rotated and conveyed to the eighth index position T8.

  In addition, as the peripheral finishing polishing machine 70, as in another example shown in FIG. 6, a long peripheral finishing roll paper 77 is held in a roll shape (rotatable around a vertical first reel axis). A first reel 71 for feeding, a roller unit 72 for pulling out a roll paper 77 for outer periphery finishing held in a roll shape on the first reel 71, and a roll paper 77 for outer periphery finish drawn out in a band shape. An outer surface finishing pressing member 73 for pressing the outer surface (polishing surface) against the outer peripheral surface Wd of the workpiece W held by the base member 90 stopped at the seventh index position T7 and rotating around the workpiece axis. A second reel 74 for winding (which can be rotated about a vertical second reel axis) for winding the belt-shaped outer peripheral finishing roll paper 77 after being pressed against the surface Wd into a roll; It may be provided.

  The outer periphery finishing pressing member 73 is fixed to the rod tip of the outer periphery finishing actuator 76 having a rod portion that can reciprocate in the radial direction (front-rear direction) of the table 9. The outer periphery finishing pressing member 73 is a flat planar plate piece, which is also called a pressing board member or a platen member, and has a pressing surface made of a low friction material.

  Further, in the vicinity of the left and right sides of the outer peripheral finishing pressing member 73, a pair of auxiliary members for holding the outer peripheral finishing roll paper 77 in a vertical plane or in a plane parallel to the front surface of the outer peripheral pressing member 73. Rollers 75 and 75 are provided.

  The roller unit 72 includes a feed roller 72a that is intermittently rotated by a servo motor, a pressure roller 72b that presses the outer peripheral finishing roll paper 77 against the feed roller 72a, and a bullet that presses the pressure roller 72b toward the feed roller 72a. A pressing member 72c such as a urging member.

  That is, in the seventh indexing position T7, when the other peripheral finishing polisher 70 is used, the roller unit 72 is intermittently fed before the base member 90 is conveyed from the sixth indexing position T6. Thus, a portion having an unused polished surface in the outer peripheral finish roll paper 77 is pulled out in a band shape, sent to the front position of the outer peripheral finish pressing member 73, and stopped (standby). The drive friction clutch disc 96 is brought into contact with the driven friction clutch disc 95 of the pedestal member 90 to rotate the workpiece W. Then, the outer peripheral finish roll paper 77 is brought into contact with the outer peripheral surface Wd being rotationally driven by the outer peripheral finish pressing member 73, and finish polishing is performed (peripheral finish polishing step). After the elapse of a predetermined time, the outer peripheral finishing pressing member 73 is moved to the outer side of the table radial (rear side) and the drive friction clutch panel 96 is separated. Thereafter, the table 9 is rotated to transport the workpiece W to the eighth index position T8. In addition, before rotating the table 9, or during rotation of the table, the roller unit 72 is intermittently fed so that a portion having an unused polishing surface in the outer peripheral finishing roll paper 77 is positioned in front of the outer peripheral finishing pressing member 73. Send to position and stop (standby).

  Further, when the workpiece W is polished (in the third, fourth, sixth, and seventh index positions T3, T4, T6, and T7), oil and fat may be applied to finish the polished surface beautifully.

Next, as shown in FIG. 1 and FIG. 7, oil, polishing powder, etc. adhering to the workpiece upper surface Wc and the workpiece outer peripheral surface Wd corresponding to the workpiece cleaning index position (eighth index position) T8. A work cleaning means 8 for wiping off foreign matter from the work W is provided.
The work cleaning means 8 includes a pedestal member 90, a clutch driving means 11 provided corresponding to the eighth index position T8, and a wiping machine 80.

  As shown in FIG. 7, the wiping machine 80 includes an endless cleaning belt 89 for wiping foreign matter from the workpiece W, and a cleaning pressure for pressing the surface (cleaning surface) of the cleaning belt 89 against the workpiece W. A member 83, a cleaning actuator 86 such as an air cylinder that applies a pressing force to the cleaning pressing member 83, a cleaning motor Md such as a servo motor for intermittently feeding the cleaning belt 89, and a cleaning motor Md. A driving roller 82 that is driven, a tension roller 84 provided on one of the left and right sides of the cleaning pressing member 83, and a tension actuator 81 such as an air cylinder that swings the arm member 21 that holds the tension roller 84. The main body base member 20 includes a cleaning auxiliary roller 85 provided on the other side of the cleaning pressing member 83.

  The wiping machine 80 is provided with a tension roller 84, a cleaning pressing member 83, and a cleaning auxiliary roller 85 on the front side (side closer to the table axis L9), and the rear side (far from the table axis L9). Drive roller 82 is disposed on the side, and the cleaning belt 89 is suspended in a substantially triangular shape in plan view. In the cleaning belt 89 suspended in a triangular shape, one side between the cleaning auxiliary roller 85 and the tension roller 84 is pressed by the cleaning pressing member 83.

The driving rotational force of the cleaning motor Md is transmitted to the driving roller 82 via a power transmission mechanism such as a pulley or a belt member, and the cleaning belt 89 circulates intermittently by the rotational driving / stopping of the cleaning motor Md. It is configured as follows.
Further, the arm member 21 has a tension roller 84 rotatably attached to the tip, and a base end (rear end) is pivotally attached to a fixing portion of the main body base member 20. The tension actuator 81 is extended to apply tension to the cleaning belt 89.

Further, the main body base member 20 is held in a forward and downward inclined manner so as to be adjustable to a desired inclination angle. In other words, the rod axis L86 of the cleaning actuator 86 is oblique to the vertical axis L90.
Further, the main body base member 20 is provided so as to be able to approach and separate from the workpiece upper corner portion We of the workpiece W held by the base member 90 stopped at the eighth index position T8.

The cleaning pressing member 83 has an L-shaped cross section, and has a press-applying surface having an L-shaped cross section made of a low friction material.
The cleaning belt 89 sent in a single cross-sectional shape is placed along (contacted with) the L-shaped pressure imparting surface of the cleaning pressing member 83 so that the cleaning belt 89 is bent (the cross-section is perpendicular). Shape.
Then, the cleaning belt 89 bent in an L-shaped cross section (right angle) is pressed (pressed) against the workpiece upper corner portion We of the workpiece W being driven to rotate about the vertical axis L90. Foreign matter adhering to the upper surface Wc and the work outer peripheral surface Wd is wiped off.

In this manner, by deforming the cleaning belt 89 into an L shape and pressing it against the workpiece upper corner portion We, it is not necessary to provide two wiping machines 80 for the workpiece upper surface Wc and the workpiece outer peripheral surface Wd.
Further, by setting the main body base member 20 (rod axis L86) to the inclined posture, the cleaning belt 89 can be pressed with a uniform force on the workpiece upper surface Wc and the workpiece outer peripheral surface Wd.

  Further, the wiping machine 80 includes an air injection nozzle 87 for removing (blowing away) foreign matters such as abrasive powder and oil adhering to the cleaning belt 89 with high-pressure air. The air injection nozzle 87 is desirably provided on the main body base member 20.

  In other words, at the eighth index position T8, foreign matters are removed by the air jet nozzle 87 in the cleaning belt 89 by intermittent feeding of the drive roller 82 before the pedestal member 90 is conveyed from the seventh index position T7. The part that has been sent is sent to the front position of the cleaning pressing member 83 and is stopped (standby) in a state of being deformed into a L-shaped cross section. The drive friction clutch disc 96 is brought into contact with the driven friction clutch disc 95 of the pedestal member 90 to rotate the workpiece W. Then, the cleaning belt 89 is brought into contact with the workpiece upper surface Wc and the workpiece outer circumferential surface Wd that are rotationally driven by the cleaning pressing member 83, and the workpiece W is wiped off foreign matter (work cleaning step). After a predetermined time has elapsed, the cleaning pressing member 83 is moved backward (moved obliquely upward) and the drive friction clutch panel 96 is separated. Thereafter, the table 9 is rotated to transport the workpiece W to the ninth indexing position T9. In addition, before the table 9 is rotated or during the table rotation, the portion of the cleaning belt 89 from which foreign matter has been removed by the air injection nozzle 87 is removed for cleaning by intermittent feeding (intermittent rotation) of the driving roller 82. It is sent to the front position of the pressing member 83 and stopped (standby) in a state of being deformed into an L shape.

  In FIG. 1, at the ninth indexing position T9, the workpiece W is not polished and waits for a predetermined time. After waiting for a predetermined time, the table 9 rotates and the workpiece W is conveyed to the tenth index position T10.

As shown in FIG. 1, a work discharge means 10 such as a conveyor or a handling device is disposed (corresponding) at a work discharge index position (tenth index position) T10.
At the tenth index position T10, the inner peripheral clamp portion 91 releases the clamp on the inner surface (inner peripheral surface) of the workpiece W by the claw member 91a moving radially inward.

  The workpiece discharge means 10 includes a discharge handling device that takes out the workpiece W, which has been released from the clamps 91 by the inner peripheral clamp portion 91, toward the radially outer area of the table 9, and the workpiece W from the discharge handling device. And a transport device for discharge such as a conveyor for receiving and transporting it to a predetermined storage position.

  At the 10th index position T10, the inner peripheral clamp portion 91 is in the clamp release state, the workpiece W is removed from the inner peripheral clamp portion 91, and is transported to a predetermined storage position by the discharge transporter. ) The polishing process (work) is completed. The base member 90 from which the workpiece W has been removed moves to the first index position T1, and the above-described process (work) is repeated.

  In the present invention, the design can be changed, and the concentric first and second feeding reels 41 and 61 are on the lower side, and the concentric first and second take-up reels 44 and 64 are on the upper side. good. That is, the concentric first and second feeding reels 41 and 61 and the concentric first and second take-up reels 44 and 64 may be disposed at different positions in the vertical direction. However, at that time, the mounting positions of the rotation resistance applying mechanisms of the feeding roller units 42 and 62, the roll paper (winding reel) driving unit, and the feeding reels 41 and 61 are changed. Further, the first supply reel 41 and the first take-up reel 44 are arranged on the side close to the table axis L9, and the second supply reel 61 and the second take-up reel 64 are arranged on the side far from the table axis L9. It may be arranged. In FIG. 5, the rotary shaft 51 may be fixed to the first take-up reel 44 and the hollow shaft 52 may be fixed to the second take-up reel 64. That is, the rotary shaft 51 that is driven to rotate by the first winding motor M1 is fixed to one of the concentric first and second winding reels 44 and 64, and the other is rotated by the second winding motor M2. The driven hollow shaft 52 may be fixed. In FIG. 2, the internal clamp portion 91 is not limited to a 3-jaw type chuck, but can be a 4-jaw type chuck or a collet chuck. For ease of explanation, in the explanation of each of the polishing machines 30 and 70 and the wiping machine 80, the direction approaching the table axis L9 in plan view is the front at the index position T, and the separating direction. , And the direction perpendicular to the front-rear direction in plan view is referred to as the left-right direction at the index position T, and the direction is described.

Further, the roll paper 40, 60, 77 has a polishing surface in which a polishing material such as abrasive grains is attached to one surface of a paper or cloth belt-shaped substrate with an adhesive or the like, as shown in FIG. , Wound in a roll state,
At the time of use, it is pulled out intermittently from one end and used in a stationary state corresponding to the part to be polished of the workpiece W. The roll papers 40, 60, and 77 are sometimes called abrasive paper rolls or abrasive cloth rolls.
Further, as shown in FIG. 10, the outer peripheral roughing polishing wheel 39 and the outer peripheral finishing polishing wheel 79 are preferably those in which strip sandpaper or cloth pieces with abrasive grains are held radially around the wheel axis, for example, What is called a paper wheel or a flap wheel is preferable.
Each of the polishing wheels 39 and 79 may be a slit wheel that is formed in a strip shape by providing a slit in a strip-shaped sandpaper or a cloth piece with abrasive grains and is held around the wheel axis.

  Further, as the low friction material of each pressing member 43, 63, 73, 83, those having self-lubricating properties are preferable, for example, graphite campus (graphite cloth) having a solid lubricant (solid graphite lubricant), or It may be molded or coated with polytetrafluoroethylene.

  As described above, the cylindrical polishing apparatus of the present invention transports the covered cylindrical workpiece W having the ceiling wall portion Wa and the cylindrical wall portion Wb by intermittent rotation feed for each predetermined pitch angle θ of the index table 9. A cylindrical polishing apparatus that stops at the index position T for each predetermined pitch angle θ and rotates the workpiece W around a vertical axis L90 to polish the workpiece upper surface Wc and the workpiece outer peripheral surface Wd. The upper surface polishing means 5 for polishing the workpiece upper surface Wc includes a first supply reel 41 for holding the rough roll paper 40 in a roll shape, and a second supply reel 61 for holding the finishing roll paper 60 in a roll shape. Are arranged in a concentric manner, and the first take-up reel 44 for winding the rough roll paper 40 drawn in a strip shape into a roll shape, and the finishing roll paper 60 drawn in a strip shape in a roll shape Wind up The second take-up reel 64 is arranged concentrically, and the concentric first feed reel 41 and second feed reel 61 are concentric with the first take-up reel 44 and the concentric reel. Since the second take-up reel 64 is disposed at a position that is different in the vertical direction and from the predetermined upper surface rough polishing index position T4 to the upper surface finish polishing index position T6, glossiness and smoothness are provided. Polishing with a beautiful finish such as properties can be performed. That is, the workpiece W can be made attractive and excellent in appearance quality. The roll paper needs to be replaced less frequently, has excellent productivity and workability, and can be polished with high efficiency. The entire apparatus can be made compact while a large number of workpieces W can be polished quickly and continuously. The diameter of each reel 41, 44, 61, 64 can be made as large as about 500 mm, long roll paper 40, 60 can be used, and the replacement frequency can be reduced (frequency of stopping the device). Work efficiency can be greatly improved. Even if the large-diameter reels 41, 44, 61, 64 are used, the entire apparatus can be made compact without increasing the size. The workpiece upper surface Wc can always be polished with a clean (unused) polished surface, and the finish (quality) of the workpiece W such as mass-produced parts can be kept constant without the finish being different for each workpiece W.

  Further, the upper surface polishing means 5 is fixed to one of the first take-up reel 44 and the second take-up reel 64 which are concentric with each other, and a rotating shaft 51 which is rotationally driven by a first take-up motor M1. In addition, the first take-up reel 44 and the second take-up reel are driven to rotate by the second take-up motor M2 and the hollow shaft 52 disposed in an outer fitting manner is fixed to the rotary shaft 51. 64 is configured to be driven to rotate with different winding torques, so even if the bending stiffness of coarse roll paper 40 and finishing roll paper 60 may be different, it is appropriate for each roll paper 40, 60. Each take-up reel 44, 46 can be driven to rotate with a proper take-up torque.

  The index table 9 includes a pedestal member 90 that is disposed with the predetermined pitch angle θ and has an inner peripheral clamp portion 91 that holds the cylindrical wall portion Wb of the workpiece W. Is provided around the vertical axis L90 so as to be rotatable, and a driven friction clutch disc 95 provided at the lower end of the base member 90 is provided below the index table 9 so as to correspond to the predetermined index position T. The drive friction clutch disc 96 provided at the position is brought into contact with the workpiece W held by the inner peripheral clamp portion 91 so as to be driven to rotate around the vertical axis L90. The clutch disc 96 can be brought into contact with and separated from the driven friction clutch disc 95 while being kept in a rotating state. Accordingly, the workpiece W held on the inner peripheral clamp portion 91 can be rotated at a desired rotational speed immediately after being stopped, and the driven friction clutch disc 95 is not stopped rotating (waiting for the rotation to stop). In other words, the table 9 can be rotated, which contributes to shortening the cycle time. Moreover, there is little impact and the workpiece W can be rotated smoothly (without being damaged).

  The cleaning pressing member 83 includes an endless cleaning belt 89 for wiping off foreign matters from the workpiece W, and a cleaning pressing member 83 for pressing the cleaning belt 89 against the workpiece upper corner portion We. Has a L-shaped cross section, deforms the cleaning belt 89 into a L-shaped cross section, presses against the workpiece upper corner portion We, and adheres to the workpiece upper surface Wc and the workpiece outer peripheral surface Wd. Since the foreign matter is wiped off, the cleaning device (wiping machine 80) can be made compact. The foreign matter on the entire outer surface of the workpiece W (the workpiece upper surface Wc and the workpiece outer circumferential surface Wd) can be quickly removed.

5 Top surface polishing means 9 Index table
40 Coarse roll paper
41 First reel
44 First reel
51 Rotation axis
52 hollow shaft
60 Finishing roll paper
61 Second reel
64 Rewind reel
83 Pressure member for cleaning
89 Cleaning belt
90 Base member
91 Inner circumference clamp
95 Followed friction clutch
96 Driving friction clutch panel L90 Vertical shaft center M1 First winding motor M2 Second winding motor T Indexing position T4 Indexing position for top surface rough polishing T6 Indexing position for top surface finishing polishing W Work Wa Ceiling wall Wb Cylindrical Wall Wc Workpiece upper surface Wd Workpiece outer peripheral surface We Work upper corner θ Predetermined pitch angle

Claims (4)

A covered cylindrical workpiece (W) having a ceiling wall portion (Wa) and a cylindrical wall portion (Wb) is conveyed by intermittent rotational feed for each predetermined pitch angle (θ) of the index table (9). Stop at the index position (T) for each pitch angle (θ), rotate the workpiece (W) around the vertical axis (L90), and move the workpiece upper surface (Wc) and workpiece outer peripheral surface (Wd). A cylindrical polishing apparatus for polishing,
The upper surface polishing means (5) for polishing the workpiece upper surface (Wc) includes a first feeding reel (41) for holding the rough roll paper (40) in a roll shape, and a finishing roll paper (60) in a roll shape. A second take-up reel (61) for holding is concentrically arranged side by side, and a first take-up reel (44) for winding the rough roll paper (40) drawn out in a strip shape into a roll shape. ) And a second take-up reel (64) for winding the finishing roll paper (60) drawn out in a strip shape into a roll shape, and arranged in a concentric manner. The reel (41) and the second take-up reel (61) and the concentric first take-up reel (44) and the second take-up reel (64) are arranged at different positions in the vertical direction, Indexing position for top surface finishing polishing from predetermined top surface rough polishing indexing position (T4) Cylindrical grinding apparatus being characterized in that disposed over T6).   The upper surface polishing means (5) is a rotating shaft that is driven to rotate by a first winding motor (M1) on one of the first winding reel (44) and the second winding reel (64) that are concentric. (51) is fixed, and on the other side, the second winding motor (M2) is rotationally driven, and the rotary shaft (51) is fixedly attached with a hollow shaft (52), The cylindrical polishing apparatus according to claim 1, wherein the first take-up reel (44) and the second take-up reel (64) are rotationally driven with mutually different take-up torques. A pedestal member (90) provided on the index table (9) with the predetermined pitch angle (θ) and having an inner peripheral clamp part (91) for holding the cylindrical wall part (Wb) of the work (W). )
The inner peripheral clamp part (91) is provided to be rotatable around the vertical axis (L90),
A drive friction clutch disk provided at a lower position of the index table (9) to a driven friction clutch disk (95) provided at the lower end of the pedestal member (90) so as to correspond to the predetermined index position (T). The workpiece (W) held by the inner peripheral clamp portion (91) is driven to rotate around the vertical axis (L90) by contacting the (96). 2. The cylindrical polishing apparatus according to 2. An endless cleaning belt (89) for wiping off foreign matters from the workpiece (W), and a cleaning pressing member (83) for pressing the cleaning belt (89) against the workpiece upper corner (We). Prepared,
The cleaning pressing member (83) has an L-shaped cross section, deforms the cleaning belt (89) into an L-shaped cross section, presses the workpiece upper corner (We), and The cylindrical polishing apparatus according to claim 1, 2 or 3, wherein the foreign substance adhering to the work upper surface (Wc) and the work outer peripheral surface (Wd) is wiped off.

Images