JPH06335848A - Workpiece feeding device and discharging device for centerless polisher and polishing device using them - Google Patents

Abstract

PURPOSE:To easily feed and discharge a workpiece which can not be insertion- fed such as an engine value, to a centerless polisher. CONSTITUTION:A workpiece 5 is slip-dropped in a nearly suspended state by an inlet chute 8 which tilts downward in a feeding device 1, and separated one by one by an escape 14, and sent to a loader 9. The loader 9 turns a bevel part 7 towards a reversing device 9 side, holding the workpiece 5. The reversing clamp 39 of the reversing device 9 chucks the bevel part 7 of the workpiece 5 and turns a shaft part 6 towards a centerless polisher 2, and lowered by a lift device 41, and feeds the workpiece 5 between the polishing wheel 50 of the centerless polisher 2 and an adjusting wheel 52. The workpiece 5 which is worked by the centerless polisher 2 is pushed out towards an outlet chute 68 by an unloader 67, and discharged outside from a lift box 78.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work feeding device for automatically feeding a work that cannot be fed through because it has a portion protruding from a cylindrical or cylindrical shaft portion to a centerless polishing machine. The present invention relates to a work discharging device for automatically taking out such a work from a centerless polishing machine, and a polishing apparatus configured by combining these supply and discharge devices with a centerless polishing machine.

[0002]

2. Description of the Related Art A centerless grinding machine (or centerless grinding machine: hereinafter referred to as a centerless grinding machine) generally feeds a workpiece between a grinding wheel and an adjusting wheel and grinds it. It is possible to continuously polish the outer peripheral surface of the work without having to open it or grasp it with a chuck.
There are features and advantages that size control is easy. On the other hand, the conventional centerless polishing machine is difficult to apply to a work that cannot be fed through because it has a portion protruding from the shaft portion in the intersecting direction, such as an engine valve, and such a work is separately handled. A dedicated machine is used for processing.

[0003]

However, if a dedicated machine is prepared for a work piece to deal with it, there is a problem in terms of economical efficiency, quality stability, etc., and the features and advantages of the centerless polishing machine as described above. It has been desired to develop a system that can utilize a work having a protruding portion.

The present invention has been made in view of the above points, and makes it easy and possible to supply and discharge a work as described above to and from a centerless polishing machine, and also to improve the structure of the centerless polishing machine itself. It is intended to be suitable for processing a work having a protruding portion.

[0005]

In order to achieve the above object, a work supply device for a centerless polishing machine according to the present invention is provided.
A device for supplying a work having a portion projecting in a direction intersecting with a cylindrical or cylindrical shaft portion to a centerless polishing machine, comprising a work input device, a loader, and a reversing device. An inlet chute that is inclined downward from the entrance side to the exit side and has a guide that slides down the work while supporting the work from at least the lower side of the protruding portion; and a pair of stoppers that are arranged to face each other near the exit side of the entrance chute. And an escape for driving the stopper body to separate the work pieces one by one and discharging the work pieces from the inlet chute. A support body that is supported and held on the side of the inlet chute and the reversing device is provided so as to be rotatable between the transfer positions. A clamp portion for chucking the protruding portion of the work held by the receiving body of the loader is rotatably and vertically movable between the transfer positions of the loader and the centerless polishing machine. .

In order to achieve the above object, the work discharge device for a centerless grinding machine according to the present invention discharges a work having a portion projecting in a direction intersecting with a cylindrical or cylindrical shaft portion from the centerless grinding machine. A device comprising an unloader for the work, an outlet chute and a lift device for the exit chute, the unloader being capable of advancing and retracting a pusher for pushing the work from the centerless grinding machine to the exit chute side. The outlet chute has a guide that inclines downward from the centerless grinding machine side toward the exit side and slides down while supporting the work from at least the lower side of the protruding portion, and the lift device includes the exit chute. The work that has been discharged from the work is received by the holding part that receives the work so that the axial direction of the work becomes non-vertical. The axial direction of the click is obtained by a mobile becomes provided with freely configured to delivery position to the outside of the apparatus at substantially along the direction.

In order to achieve the above object, the polishing apparatus according to the present invention is a combination of the work supply device and the work discharge device described above with a centerless polishing machine, and the centerless polishing machine is rotatable about the support frame of the adjusting vehicle as a base. Means for urging the adjusting wheel toward the grinding wheel, a stopper for defining the rotation stop position of the support frame, and a means for varying the rotation stop specification position by the stopper. It is configured to be provided.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 showing an embodiment of a polishing apparatus according to the present invention will be described. An outline of the overall configuration of the apparatus of the present embodiment will be described. It is an ejector. In the figure, 5 is a work,
For example, in an engine valve, a cylindrical or cylindrical shaft 6
And the umbrella portion 7 projecting in a direction intersecting the axial direction of the shaft 6.
It is impossible or difficult to feed through because of this.

The charging device 1 comprises an inlet chute 8, a loader 9 and a reversing device 10.
As shown in detail in FIG. 2 to FIG.
1, full work sensor 12, work sensor 13
And the escape 14.

The guide device 11 performs a dumping action and a guiding action when the plurality of works 5 are sequentially slid down to the escape 14, and the whole is at an appropriate angle θ (about 30 degrees in the illustrated example) with respect to the horizontal. The centerless polishing machine 2 side is inclined downward so as to form (). (However, this angle θ is arbitrary and may be an angle at which the work 5 easily slips off.). The guide device 11 is mainly used for the guide plate 1.
5, upper guide rod 16, a pair of lower guide rods 17, 17, and a support frame 18.

The guide plate 15 is made of a stainless steel plate material, and holds the lower surface of the umbrella portion 7 of the work 5 at the upper edge and slides it down while sliding it. It is slightly wider than the axis 6. Also, an oblong hole 1 is provided near the exit (lower) end of the guide plate 15.
9 is provided, and an escape 14 is arranged in this hole 19. Both the upper guide rod 16 and the lower guide rod 17 are round rods made of stainless steel. The upper guide bar 16 has its entrance (upper) end bent slightly upward so that the work 5 can be easily inserted. The two lower guide rods 17 are arranged in parallel so as to guide the lower end of the shaft 6 of the work 5, and the output side end is made to project to the loader 9 side more than the output side end of the guide plate 15. These guide plates 15, upper and lower guide bars 16,
A support frame 18 to which 17 is attached is fixed to a vertical base frame 21 standing upright on the side of a base 20 for installing the entire apparatus.

Both the full work sensor 12 and the work presence sensor 13, which are sensors of the guide device 11,
On the support frame 18 of the guide device 11, the sensor bodies 22, 2
3 is fixed, the upper ends of the sensing bars 24 and 25 are rotatably attached to the sensor bodies 22 and 23, respectively, and are inserted between the guide plates 15 and 15 as shown in FIG. The sensing bar 24 of the full work sensor 12 hangs down in the approximate center of the guide plate 15 in the longitudinal direction as shown by the dotted line in FIG.
When a predetermined number of work pieces 5 stay between 5 and 15, they remain pushed up by a predetermined angle as shown by the chain line in FIG.
A signal indicating that the work 5 has been put into the guide device 11 by a predetermined number is output to an external control device (not shown) so that the work 5 is not fed any more. Further, the sensing bar 25 of the work presence sensor 13 has a hole 19 in the guide plate 15 when the work 5 is not loaded.
As shown by the dotted line in FIG. 2, it hangs slightly upstream of, and when the inserted work 5 slides down to the position just before the escape 14, this also remains pushed up by a predetermined angle as shown by the chain line in FIG. Then, a signal for operating the escape 14 is output to an external control device (not shown).

As shown in FIGS. 2 and 4, the escape 14 is composed of a support frame 26 and a pair of escape claws 27 and 28 (hereinafter, first escape claw 27 and second escape claw 28). Although detailed illustration is omitted, the support frame 26 is a gate-shaped frame body having an open lower end,
It is possible to move back and forth in a direction orthogonal to the sliding direction of the work 5 (direction perpendicular to the paper surface). Also both escape claws 2
7, 28 are attached near the lower end of the support frame 26 with a predetermined gap in the sliding direction of the work 5 and facing each other so that the tip end side is located between the guide plates 15, 15.

The first escape claw 27 is located on the upstream side in the sliding direction of the work 5 and has a tip end formed in a slope shape, and the second escape claw 28 is located on the downstream side in the sliding direction of the work 5. It is also located, and the tip portion is also formed in a slope shape. However, the slope of the tip of the second escape claw 28 is smaller than that of the first escape claw 27. Further, as for the distance between the escape claws 27 and 28 in the sliding direction of the work 5, the shaft 6 of the work 5 slips between the escape claws 27 and 28 one by one as the support frame 26 moves forward and backward, and is supplied to the loader 9. As described above, the diameter of the shaft 6 of the work 5 is set to be slightly larger. Although a support such as an air cylinder (not shown) is connected to the support frame 26 to drive the support frame 26 back and forth, known means and mechanisms may be adopted for these.

The loader 9 is, as shown in FIGS. 5 and 6,
It comprises an umbrella receiver 29, a pair of shaft receivers 30, 30, a stopper plate 31, a support arm 32 for these, and an air cylinder 33 for rotational drive. The umbrella receiver 29 has a substantially U-shaped cross section, and the side edges and the lower surface of the umbrella portion 7 of the work 5 are brought into contact with both end edges 34 and 35 to hold the work 5 so as not to slip. . A pair of bearings 3
0 is provided for a predetermined distance in the axial direction of the work 5,
The shaft 6 of the work 5 is received by the triangular recess 36 provided on the end surface. The stopper plate 31 prevents the work piece 5 from coming off during backward tilt rotation, and has a fork-like shape due to the opening groove 37 having a width narrower than that of the work piece 5. The workpiece 5 can be clamped by the reversing device 10 described later.
The support arm 32 is attached to the vertical base frame 21 by a rotary shaft 38, and is also rotationally driven by an air cylinder 33 attached to the vertical base frame 21 below the guide device 11.

Therefore, the loader 9 can temporarily receive and hold the work 5 supplied from the guide device 11 via the escape 14 in the posture at the time of supply, and can be rotated so as to be transferred to the reversing device 10 in the subsequent stage. Has become. The rotation angle in this embodiment is about 90 degrees as shown in FIG. Although not shown, a shock absorber for absorbing a shock applied to the work 5 during rotation is also provided. The rotation position of the loader 9 is detected by an appropriate position sensor. Further, each part such as the umbrella receiver 29 is the work 5
It can be replaced according to the size, shape, etc.

As shown in FIGS. 7 to 9, the reversing device 10 is composed of a reversing clamp 39, a reversing driving device 40 and a lifting device 41. The reversing clamp 39 includes an arm 42 pivotally supported by the reversing drive device 40 and a clamp 43 attached to the tip thereof, and as shown in FIG.
It can be rotated 0 degrees. The clamp part 43 is provided with a chuck claw 44 at the tip, and although the detailed illustration of the chuck claw 44 is omitted, the lower side is opened so as to cover the umbrella part 7 of the work 5, and the upper side and the left and right sides are the work 5. It projects so as to wrap around the lower surface of the umbrella portion 7. An air cylinder is built in the arm 42 so that the work 5 can be chucked together with the chuck claw 44. That is, the reversing clamp 39 picks up the work 5 from the loader 9 and rotates it to reverse the work 5 and direct the shaft 6 side toward the centerless polishing machine 2 side.

As shown in FIG. 9, the reversing drive device 40 has a mounting rod 48 of an actuator 47 fixed to a guide rod 46 protruding downward from a lift cylinder 45 of a lift device 41 so that it can be moved up and down as a whole. Has become. As shown in FIG. 9, the lift device 41 has the casing of the lift cylinder 45 fixed to the vertical base frame 21,
The reversing drive device 40 is moved up and down together with the reversing clamp 39,
The work 5 can be supplied onto the work rest blade 49 of the centerless polishing machine 2. If a rotary hydro actuator is used as the actuator 47, shock at the time of reversal can be reduced. A rotary joint should be used for the air piping to prevent the piping from getting entangled.

As shown in FIG. 10, the centerless polishing machine 2 comprises a polishing wheel 50 mounted on a base 20, and an adjusting wheel 52 having a support frame 51 rotatably supported on the base 20. is there. Since the support and rotation drive mechanism for the grinding wheel 50 and the adjusting wheel 52 may be conventionally known general ones, detailed illustration and description thereof will be omitted.

The support frame 51 of the adjusting wheel 52 is supported by a support shaft 53, and has a biasing device 54 and a two-step escape amount stopper 55 built therein. The urging device 54 includes a pressure spring 56 and a support shaft 57 thereof. One end of the support shaft 57 is attached to the support frame 51, and the pressure spring 5 is attached to the tip thereof.
The base end of 6 is fixed, and the tip of the pressure spring 56 is connected to the mounting base 58 of the two-step escape amount stopper 55 standing on the base 20, and the support frame 51 is connected to the base 2.
The adjusting wheel 52 is moved to the 0 side to move the adjusting wheel 52 to the polishing wheel 5.
It is designed to be pressed and urged to zero.

The escape amount two-stage stopper 55 comprises a stopper bolt 59 and a cam device 60. The stopper bolt 59 has its tip brought into contact with the surface of the cam plate 61 of the cam device 60 to regulate the amount of rotation of the adjusting wheel 52 toward the base 20 side. The cam plate 61 included in the cam device 60 is a so-called swash plate cam whose surface with which the tip of the stopper bolt 59 abuts is inclined in the axial direction of the stopper bolt 59. Although not shown in detail, an air cylinder 62 (see FIG. 10 is moved in the direction perpendicular to the paper surface of 10) and is rotated by the operation of the air cylinder 62. Then, by rotating the cam plate 61 and changing the position of the stopper bolt 59, the polishing wheel 5
The distance between 0 and the adjusting wheel 52, that is, the escape amount is adjusted. Of course, the escape amount differs depending on the size of the work 5, but it can be dealt with by changing the protrusion amount of the stopper bolt 59 into the support frame 51 or changing the cam surface shape of the cam plate 61.

The work pop-out prevention device 3 is shown in FIGS.
As shown in FIG. 1, it is mainly composed of a pop-out prevention fitting 63, an air cylinder 64 and a support frame 65. Support frame 6
5 is fixed to the vertical frame 21 below the loader 9 and has an adjusting elongated hole 66 for adjusting the position of the air cylinder 64 on the side. This device prevents the work 5 from jumping out from between the grinding wheel 50 and the adjusting wheel 52 during processing, and the air cylinder 64 causes the jump-out prevention fitting 63 to be in front of the work 5 being processed (for example, 1 mm before). (The state shown in the drawing shows a state in which it is completely retracted.) To serve as a stopper when the umbrella portion 7 of the work 5 pops out. Of course, when the work 5 is normally located between the grinding wheel 50 and the adjusting wheel 52, it does not come into contact with the umbrella portion 7 of the work 5.

As shown in FIGS. 1 and 11 to 14, the discharging device 4 is the discharging side of the centerless polishing machine 2 (the discharging side of the conventional centerless polishing machine, and the actual discharging side of the apparatus of this embodiment). It is composed of an unloader 67 located on the opposite side) and an outlet chute 68 located on the input side of the centerless polishing machine 2.

The unloader 67 mainly consists of the pusher 6
9, a pusher guide 70, an air cylinder 71, and a support base 72, and pushes the work 5 from between the grinding wheel 50, the adjusting wheel and 52 to the outlet chute 68. The support base 72 includes a fixed base 73 mounted on the base 20, and a movable base 74 slidably mounted on the fixed base 73. When the length of the work 5 is changed, a handle 75 at the rear of the device is provided. To move the movable base 74,
The position of the pusher 69 is changed for adjustment.

The outlet chute 68 is mainly composed of a first chute 76, a second chute 77, a lift box 78 and an exit lift 79 which serve as a discharging chute.
The first and second chutes 76, 77 are made of stainless steel in order to reduce frictional resistance. The first chute 76 faces the entry side directly below the loading side of the centerless polishing machine 2, and the second chute 77 It is interposed between the exit side end of the first chute 76 and the lift box 78. As shown in FIG. 13, the first chute 76 has a semi-cylindrical groove-shaped cross section, and the work 5 slides down with the umbrella portion 7 first. Similarly, as shown in FIG. 13, the second chute 77 has an inverted triangular cross section and an open lower end, supports the umbrella portion 7 of the work 5 from below, and causes the shaft 6 to hang down and slide down. The sliding state of the work 5 is shown in FIG.

The lift box 78 is shown in FIGS.
As shown in, a guide 80 having the same shape is provided so as to be connected to the second chute 77 in order to receive the work 5 conveyed by the second chute 77 on the lower part of the floor surface. In addition, an opening 81 having the same shape as the work 5 and slightly larger than the work 5 is formed in the upper part of the floor surface, and the work 5 pulled obliquely upward by the guide rod 82 of the exit lift 79.
Are discharged from the opening 81 to the outside. It should be noted that the member forming the floor surface may be replaceable by the work 5. Reference numeral 83 in the drawing is a discharge sensor for detecting the discharge of the work 5 from the opening 81. Like the full work sensor 12 and the work presence sensor 13 of the guide device 11, the sensing bar 84 and other components,
Have a function.

Next, the overall operation of the apparatus of this embodiment will be described with reference to FIG. 15 showing an operation sequence. Note that FIG.
The processing cycle, that is, the production interval, for one work 5 by the series of operations shown in FIG.

First, after preparing the operation such as inspection of each part,
The rotation of the adjusting wheel 52 is started (a in FIG. 15). After a lapse of a predetermined time from the start of rotation of the adjusting wheel 52, the polishing wheel 50 also starts rotating (b in FIG. 15). Although not shown in FIG. 15, the supply of the cooling coolant is also started at this time.
In this state, the plurality of works 5 are sequentially supplied to the guide device 11 of the entrance chute 8 and slid down to the escape 14.
When the work 5 reaches the position just before the escape 14, the sensing bar 25 of the work presence sensor 13 is pushed up, the detection signal of the work presence is output to the external control device, and the escape 14 is output by the signal from the control device according to it. It operates (c in FIG. 15). Further, in order for the escape 14 to operate, it is necessary that the detection output from the work presence sensor 13 is generated and that the loader 9 is rotated to the upper limit.

The escape 14 moves forward from the normal stop position, stops at the forward position (time t1 is, for example, 0.5 seconds),
Normally, a series of operations of retreating to the stop position is performed, but in the state where the work presence sensor 13 detects the work 5,
The escape 14 is stopped at the normal stop position, and both escape claws 27 and 28 are at the positions shown by the solid lines in FIG.
At this time, the shaft 6 of the work 5 is in contact with the inclined surface of the tip of the first escape claw 27. In this state, when it is detected that the loader 9 has rotated to the upper limit, the escape 14 advances and stops. By this operation, both escape claws 27 and 28 are moved to the positions shown by the chain line in FIG. 4, the work 5 slips through the first escape claw 27 and further slides down on the guide plate 15, and the work 5 is located on the upstream side of the second escape claw 28. Hit the side,
Once it has stopped sliding down. After that, when the escape 14 retreats to the normal stop position, the work 5 moves to the second position.
It also passes through the escape claw 28 and is supplied to the loader 9. As a result, of the plurality of works 5 in the guide device 1, only the work at the most exit end is separated and supplied to the loader 9.

The loader 9 receives and holds the work 5 separated and supplied by the escape 14 in the same posture by the umbrella receiver 29 and the shaft receiver 30, and holds the work cylinder 5.
It is rotated down 90 degrees by 3 (d in FIG. 15). The loader 9 is kept in the descending rotation state for a predetermined time, and is then driven to be rotated up in the air cylinder 33, and is returned to a state in which the next work 5 can be received. At the same time when the loader 9 finishes the descending rotation and reaches the stop state (e in FIG. 15), the reversing clamp 39 of the reversing device 10 is rotated forward by the reversing drive device 40 toward the loader 9 side, and the clamp 43.
Enters from the opening groove 37 provided in the stopper plate 31 of the loader 9 and wraps the umbrella portion 7 of the work 5 from above. At this time (f in FIG. 15), the tip of an air cylinder (not shown) projects toward the upper surface of the umbrella portion 7 of the work 5 and holds the umbrella portion 7 together with the chuck claws 44. Then, upon completion of chucking (g in FIG. 15), the reversing clamp 39 rotates backward to the centerless polishing machine 2 side.

At the end of reverse rotation of the reverse clamp 39 (see FIG.
5 h), the workpiece 5 is a grinding wheel 50 as shown in FIG.
It is located above between the adjusting wheel 52 and the adjusting wheel 52. Then, when the reverse rotation of the reversing clamp 39 is completed, the lift device 41 descends and the work 5 is supplied onto the work rest blade between the grinding wheel 50 and the adjusting wheel 52. Simultaneously with the supply of the work 5, the cam device 60 of the escape amount two-step stopper 55 is actuated, the rotation of the cam plate 61 advances the adjusting wheel 52 to the grinding wheel 50 side, and the machining of the shaft 6 of the work 5 is started. To be done. When the adjusting wheel 52 moves forward to a position where a desired clearance is formed between the adjusting wheel 52 and the grinding wheel 50 and stops, the clamp 43
Of the air cylinder moves backward and its tip 45 has the chuck claw 4
4, the operation of unclamping the work 5 is started (j in FIG. 15). Then, when this unclamping operation is completed (k in FIG. 15), the lift device 41 turns upward,
When the work piece pops up and stops (l in FIG. 15), the air cylinder 64 of the work pop-out prevention device 3 pops out.
To advance to a predetermined position.

When the predetermined processing time t2 (2 seconds in the illustrated example) is finished (m in FIG. 15), the cam device 60 of the escape amount two-step stopper 55 is activated and the stopper bolt is rotated by the rotation of the cam plate 61. 59 moves backward, and the adjusting wheel 52 also moves away from the grinding wheel 50 accordingly. At the same time, the air cylinder 64 of the work pop-out prevention device 3 is activated (the operating time t3 is set by a timer or the like), and the pop-out prevention fitting 63 is moved backward. Further, at the same time as the backward movement of the pop-out prevention metal fitting 63 is completed (n in FIG. 15), the pusher 69 of the unloader 67 advances toward the centerless grinding machine 2 side, and pushes out the work 5 from between the grinding wheel 50 and the adjusting wheel 52. The pushed work 5 is the first chute 7 of the exit chute 68.
6 and the second chute 77, and then stored in the lift box 78. Then, after the work 75 hits the wall surface of the lift box 78 in the lift box 78 and the grinding liquid is wiped off by the impact, the outlet lift 79 raises the work 5 and further drops the grinding liquid by this momentum. The work 5 is discharged to the outside through the opening 81 of the lift box 78.

[0033]

Since the work discharge device of the centerless polishing machine according to the first aspect is as described above, it is possible to continuously and automatically supply a work which is not suitable for through feeding to the centerless polishing machine and to supply the grinding liquid. A centerless polishing machine that can be shredded without a special device, does not require a dedicated machine, can machine the center hole of the work, does not need a chuck at the time of machining, can perform continuous work polishing, and can easily manage dimensions. The present invention has an effect that it is possible to enjoy a work that cannot be fed through the features and advantages.

Since the work discharge device of the centerless polishing machine according to the second aspect is as described above, it becomes possible to easily discharge the work which is not suitable for the through-feed from the centerless polishing machine, and to improve the machining efficiency. The effect is that it can be improved.

Since the polishing apparatus according to the third aspect is as described above, continuous and automatic supply of a work that is not suitable for feeding through and features of the centerless polishing machine, enjoyment of the advantages, and such a work can be achieved. There is an effect that the centerless polishing machine easily discharges, and it is thereby possible to construct a very efficient polishing system.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a polishing apparatus according to the present invention.

FIG. 2 is a side view showing a charging device of the work supply device according to the present invention.

FIG. 3 is an end view as seen from the direction of arrow A in FIG.

FIG. 4 is a plan view showing the structure and operating mode of the escape shown in FIG.

FIG. 5 is a side view showing a loader of the work supply device according to the present invention.

FIG. 6 is a plan view showing each receiver constituting the loader of FIG.

FIG. 7 is a side view showing the reversing device of the work supply device according to the present invention with a part thereof cut away.

FIG. 8 is a bottom view seen from the direction of arrow B in FIG.

9 is a perspective view showing a rotation and lifting drive device of the reversing device of FIG. 7. FIG.

FIG. 10 is a partial cross-sectional view showing the main parts of the centerless polishing machine according to the present invention.

FIG. 11 is a side view showing an outlet chute, a lift device, and a work positioning device of the work discharging device according to the present invention.

FIG. 12 is a side view showing an unloader of the work discharging apparatus according to the present invention.

FIG. 13 is an end view schematically showing the shapes of the first and second chutes of the outlet chute of the work discharging apparatus according to the present invention when viewed from the direction of arrow C in FIG.

FIG. 14 is a bottom view seen from the direction of arrow C in FIG.

FIG. 15 is a graph showing an operation sequence of the polishing apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input device 2 Centerless grinder 3 Workpiece pop-out prevention device 4 Workout device 5 Workpiece 6 Shaft 7 Umbrella part 8 Inlet chute 9 Loader 10 Reversing device 11 Guide device 12 Full work sensor 13 Work present sensor 14 Escape 15 Guide plate 24, 25 Sensing Bars 27, 28 Escape claw 39 Reverse clamp 40 Reverse drive device 41 Lift device 43 Clamp 44 Chuck claw 49 Work rest blade 50 Grinding wheel 52 Adjusting wheel 54 Biasing device 55 Escape amount two-step stopper 56 Pressure spring 59 Stopper bolt 60 Cam Device 61 Cam plate 63 Preventive metal fitting 67 Unloader 68 Exit chute

Claims (3)

[Claims] 1. A device for supplying a work having a portion projecting in a direction intersecting with a cylindrical or cylindrical shaft portion to a centerless polishing machine, the device including a work loading device, a loader and a reversing device. , The charging device is inclined downward from the entrance side to the exit side,
An inlet chute having a guide for supporting and sliding the work from at least the lower side of the protruding portion and a pair of stopper bodies arranged in the vicinity of the exit side of the inlet chute are provided, and the stopper body is driven to move the work. The loader separates one by one and discharges it from the inlet chute, and the loader supports the work discharged from the inlet chute at least on the lower side of the protruding portion and holds the receiving body with the inlet chute. The reversing device is provided so as to be rotatable between transfer positions with the reversing device, and the reversing device includes a clamp portion for chucking a protruding portion of the work held by a receiving body of the loader, between the loader and the centerless polishing machine. A work supply device for a centerless polishing machine, characterized by being rotatable and vertically movable between transfer positions. . 2. A device for discharging a work having a portion projecting in a direction intersecting with a cylindrical or cylindrical shaft portion from a centerless polishing machine, comprising: an unloader for the work, an outlet chute, and the outlet chute. The unloader is provided with a pusher that pushes and retracts the work piece from the centerless grinding machine to the outlet chute side, and the exit chute is lowered from the centerless grinding machine side to the exit side. It has a guide that inclines toward the side and slides down the work while supporting the work from at least the lower side of the protruding portion, and the lift device causes the work discharged from the outlet chute to have a non-vertical state in the axial direction. The holding part for receiving is provided so that it can be moved to the position where it is delivered to the outside of the device in a direction that is almost along the axial direction of the received work. A work discharge device for centerless polishing machines. 3. The work supply device according to claim 1, the work discharge device according to claim 2, and a centerless polishing machine, wherein the centerless polishing machine is provided with a support base of an adjusting vehicle rotatably supported on a base. In addition, the adjusting vehicle includes means for urging the adjusting wheel toward the grinding wheel, a stopper for defining a rotation stop position of the support base, and a means for varying the rotation stop defining position by the stopper. The polishing apparatus is characterized in that the distance between the polishing wheel and the polishing wheel can be adjusted.