JPH0541391B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a bolt polishing device particularly suitable for automatically polishing the tip screw shaft of a large and heavy bolt.

(Conventional technology and its problems) In large mechanical devices that use long (for example 600 mm to 1800 mm) and large diameter bolts, the bolts are regularly removed to prevent the tip screw shaft from rusting. Some items require polishing to remove them. In such cases, conventionally, the removed bolt was supported with an appropriate jig, and the polishing work was carried out by manually applying a rotating polishing brush set in an air grinder to the side surface of the screw shaft at the end of the bolt. Not only did it require a great deal of effort and time, but it also had the disadvantage of being potentially dangerous.

In order to solve these problems, an automatic polishing device is required that automatically polishes the bolt to be polished that is set at a predetermined position. 1978-
It is conceivable to replace the grinding means in a grinding machine equipped with a loading and unloading device as disclosed in Japanese Patent No. 196951 with a bolt grinding means.

With the configurations disclosed in these publications, it is possible to carry out loading, in which the unprocessed work is carried into the processing position, and unloading, in which the machined work is carried out from the processing position, at the same time. The workpiece is sequentially transported from a pre-processing standby position, via a processing position, to a processed workpiece take-out position along a circular endless transport path formed by a disc-shaped workpiece support plate. The space occupied by the entire apparatus including the workpiece conveyance path becomes very large, and the apparatus cannot be used as a means for loading and unloading a large and heavy bolt polishing apparatus as described above.

In addition, in the device disclosed in the latter publication, the loading device and the unloading device each consist of two independently installed manipulators, which is also suitable for polishing devices for large and heavy bolts. In order to apply the manipulator as a conveyance means for transporting the manipulator, each manipulator, each having its own drive means, becomes large and extremely expensive, which is also impractical.

(Means for Solving the Problems) The present invention has been made in order to solve the problems of the conventional art as described above, and its features are shown with reference numerals in the embodiments described below. The bolt polishing device of the present invention is a bolt in which a polishing means 9 for the threaded shaft portion of the bolt end is disposed on at least one of the bolts B, B' to be polished, which are automatically supported on the bolt support means 1 in the axial direction. In the polishing device, temporary bolt receiving means 42 and 43 are provided at symmetrical positions on both sides of the bolt supporting means 1 in the front and rear directions perpendicular to the axial direction of the bolts B and B' on the means 1, respectively. Transferring the bolt on the bolt temporary receiving means 42 on the carry-in side onto the bolt supporting means 1,
In a bolt polishing device equipped with a bolt transfer means 50 for transferring the polished bolt on the bolt support means 1 onto the bolt temporary receiving means 43 on the delivery side, the bolt end screw shaft portion polishing means is provided. 9 is capable of reciprocating in the axial direction of the bolts to be polished B and B' on the bolt support means 1; the bolt transfer means 50 is capable of reciprocating between the bolt support means 1 and each bolt temporary receiving means 42; A pair of front and rear bolt support means 56, 57 are arranged in parallel in the front-rear direction at substantially equal intervals to the distance between the bolts 43 and 43; Lifting drive means (elevating platform 5
4 and the cylinder/piston unit 55), and both the bolt supports 56 and 57 are placed at positions corresponding to the bolt temporary receiving means 42 and the bolt supporting means 1 on the carry-in side, and at positions corresponding to the bolt supporting means 1 and the bolt temporary receiving means 1 on the carry-out side. A back-and-forth movement drive means (a movable base 51 and a cylinder/piston unit 5
2) and is characterized by the following.

(Example) Hereinafter, an example of the present invention will be described based on the attached illustrative drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a bolt support means for automatically supporting the bolt to be polished in a horizontal state, and a pair of left and right roller units 2 provided at the center of the base F. 3, and each roller unit 2, 3 has a pair of front and rear movable bodies 5a, 5 supported by a slide guide 4 so as to be movable in the front and rear direction.
b, bolt supporting rollers 6a and 6b pivotally supported by the movable bodies 5a and 5b, respectively, and a handle 7
The screw shaft 8 is rotatably supported at one end of the slide guide 4, and has threaded portions 8a, whose screw directions are opposite to each other.
Each of the movable bodies 5a and 5b is threadedly inserted into the screw hole of the movable bodies 5a and 5b. Therefore, by rotating the screw shaft 8 in the forward and reverse directions, the movable bodies 5a and 5b can be moved toward or away from each other, and the distance between the pair of bolt supporting rollers 6a and 6b can be adjusted freely. Can be changed.

9 is a polishing means, a transverse motion table 10, a drive means 11 for moving this transverse motion table 10, and the transverse motion table 10.
Three air motor units (air glider, etc.) 12 attached to a vertical wall 10a erected
a to 12c, and each air motor unit 12a
Polishing rotary brush 13a set at ~12c
~13c. This polishing means 9
are arranged on a base F on one left and right side of the bolt support means 1, and the lateral movement base 10 includes a pair of guide rails 14 fixed to the base F, and a pair of guide rails 14 that are arranged vertically on the guide rails 14. It can freely reciprocate in the direction of the bolt axis by means of guide wheels 15 which are pivotally supported on both sides of the transverse movement table 10 so as to be sandwiched therebetween. Further, the driving means 11 includes a pair of gear wheels 18 and 19 supported via support shafts 16 and 17 at positions below both ends of the movement path of the traversing table 10 within the base F; ,1
Chain 20 suspended between 9 and one gear wheel 1
9 from the side of the base F via its support shaft 17, and a part of the chain 20 is connected to the bottom of the transverse movement table 10 via an attachment 20a. .

The three air motor units 12a to 12
c is the horizontal moving table vertical wall 1 as shown in FIG.
An air motor unit 12a located at the upper center of the circular through hole 10b provided at three locations around the circular through hole 10b is supported by a bracket 22 attached to the vertical wall 10a so as to be movable and fixed in the vertical direction. The two air motor units 12b, 12c located on both sides of the lower part of the air motor units 12b, 12c are respectively supported by the free ends of arms 23 and 24 attached to the vertical wall 10a so as to be able to swing freely relative to each other in the distance direction. 2
5 is a nut (or bolt) with a handle that fixes the bracket 22 at an arbitrary position within the vertical elongated hole 26 provided in the vertical wall 10a;
It is. Reference numeral 27 denotes a vertical screw shaft for suspending the bracket 22, which passes through the support plate 10c protruding from the upper end of the vertical wall 10a.
A nut 28 with a handle is screwed onto the upper side of the handle. Therefore, by rotating the nut 28 forward and backward with the nut 25 loosened, the air motor unit 12a can be raised and lowered together with the bracket 22. Numerals 29 and 30 are nuts (or bolts) with handles for fixing the arms 23 and 24 at arbitrary angles.

As shown by imaginary lines in FIG. 2, the three polishing rotary brushes 13a to 13c driven by the air motor units 12a to 12c are surrounded by a protective cover 31, and rust is removed from the underside. A saucer 32 can be provided. Further, when the protective cover 31 is made of an opaque material, it is desirable to provide a viewing window 31a at an appropriate location. These protective covers 31 and rust trays 32 are connected to the horizontal movement table 10.
mounted on.

In FIGS. 1 and 2, 33 is a stopper for positioning the bolt B to be polished, and is disposed on the opposite side of the bolt support means 1 from the side where the polishing means 9 is located. This stopper 33 includes a movable base 35 supported movably in the axial direction of the bolt to be polished B by a slide guide 34 provided on the base F, and an elevating member 36 supported on the movable base 35. , and the bolt support means 1 of this elevating member 36
It is composed of a freely rotatable ball 37 protruding from the side, and the movable base 35 can be fixed at any position within the range of a long hole 38 provided on the base F by a nut (or bolt) 39 with a handle. The height of the elevating member 36 can be adjusted by rotating the screw shaft 40 with a handle in forward and reverse directions. still,
41a and 41b are bolt guides attached to the movable table 35 in a cantilevered manner.

As shown in FIG. 1, FIG. 3, and FIG.
2,43 are provided. Which means 42,4
3 is also composed of four bolt support plates 44 and 45 arranged in parallel at appropriate intervals in the axial direction of the bolt to be polished B, and each bolt support plate 44 of the carry-in side bolt temporary receiving means 42 is connected to the bolt support means 1. It has an upper edge 44a that slopes lower as it approaches, and a bolt receiving protrusion 4 at the lower end of the upper edge 44a.
4b. Further, each bolt support plate 45 of the temporary bolt receiving means 43 on the unloading side has an upper edge 45a that slopes downwardly as the distance from the bolt support means 1 increases, and a bolt fall prevention protrusion 45b is provided at the higher end of the upper edge 45a. We are prepared. Further, among the four bolt support plates 45, two inner bolt support plates are provided with automatic period controls 46. This automatic opening/closing stopper 46 is connected to the horizontal support shaft 4.
7 to the side of the bolt support plate 45 so that the third It is held in the standing position shown in the figure.

As shown in FIG. 5, each bolt support plate 44 in the bolt temporary receiving means 42 on the loading side has a bolt elevating guide rail portion 44c extending downward from its outer end to a position near the lower end of the base F. They are installed consecutively.

As shown in FIGS. 1, 2, and 5, a bolt transfer means 50 is provided between the pair of left and right roller units 2 and 3 in the bolt support means 1. This bolt transfer means 50 includes a movable table 51 provided in the base F that is freely movable back and forth, a cylinder/piston unit 52 that reciprocates the movable table 51, and two vertically moving rods on the movable table 51, front and rear. 53, a cylinder/piston unit 55 for driving the lifting table 54 up and down, and a pair of front and rear bolt support stands 56 and 57 supported on the lifting table 54. Reference numeral 58 denotes a pair of left and right guide rails that support the movable base 51 so as to be movable back and forth via guide wheels 59 pivotally supported on both left and right sides of the movable base 51.

A pair of front and rear bolt support stands 5 on the lifting table 54
6 and 57 are arranged in parallel at the same interval as the interval between the bolt support means 1 in the center and the bolt temporary reception means 42 and 43 on both the front and rear sides, and each is composed of a pair of left and right V-shaped plates 56a and 56a. has been done.
Moreover, one bolt support stand 56 is shown in FIGS. 6 and 7.
As shown in the figure, a vertical shaft 60 protruding downward from the bolt support base 56 is rotatably connected to a bearing member 61 fixed on the lifting stage 54 via a bearing 62, so that the vertical axis Furthermore, a spring plunger 63 for preventing rotation is attached to an eccentric position at the bottom of the bolt support base 56 by screw fitting, and the lifting base 54
On the upper surface of the side bearing member 61, two recesses 64a and 64b into which the balls 63a protruding from the lower end of the plunger 63 fit are provided at two locations in the diametrical direction.

As shown in FIGS. 1, 3, and 5, bolt carrying means 65 and bolt carrying means 66 are provided on both front and rear sides of the base F. Both means are equipped with horizontally elongated elevating members 71 and 72 supported at both ends by a pair of left and right elevating guide columns 67 and 68 through guide wheels 69 and 70 so as to be freely movable up and down, and are provided with horizontally elongated elevating members 71 and 72 of the bolt carrying means 65. , bolt support plates 73 having upper edges inclined in the same direction as the upper edges 44a of each bolt support plate 44 in the bolt temporary receiving means 42 are protruded at appropriate intervals. The elevating member 72 has an upper edge that is inclined in the same direction as the upper edge 45a of each bolt support plate 45 in the bolt temporary receiving means 43, and a projection 74a for preventing bolts from falling at the lower end thereof. Bolt support plates 74 are provided to protrude at appropriate intervals. Furthermore, the third
As shown in the figure, the arm 48 with a roller of the automatic opening/closing stopper 46 in the bolt temporary receiving means 43 projects into the elevating path of the horizontally elongated elevating member 72 in the bolt carrying means 66.

As shown in FIGS. 5 and 8, a lifting drive wire 75 is connected at one end to each end of the horizontally elongated lifting member 71 in the bolt carrying means 65.
a and 75b are horizontal shaft sheaves 76a and 76b that are pivotally supported on the upper ends of the elevation guide columns 67 on both sides, and a horizontal shaft sheave 77a that is pivotally supported on the side of the base F at a position directly below these sheaves 76a and 76b. , 77b, vertical shaft sheaves 78a, 78b pivotally supported on the bolt carrying means 65 side in the base F, and wire end locking fittings via movable vertical shaft sheaves 79a, 79b provided in the base F. It is fixed at 80a and 80b. The movable vertical shaft sheaves 79a and 79b are
The movable bodies 82a and 82b are supported by slide guides 81a and 81b so as to be movable in the front and rear directions, respectively, and are supported by springs 83a and 83b in the direction of loosening the wires 75a and 75b, respectively. The wires 84a and 84b, which have one end connected to these movable bodies 82a and 82b, are connected to a movable body 86 which is pivotally supported at both left and right ends of another movable body 86 which is driven in the front and back direction by a cylinder/piston unit 85. It is fixed via vertical shaft sheaves 87a, 87b to other wire end locking fittings 88a, 8b arranged parallel to the wire end locking fittings 80a, 80b.

According to the elevating drive means 89 configured as described above, by pulling back the movable body 86 from the limit position shown in FIG.
Wire 84a, which is hung from 7a, 87b,
8+4b is loosened, and the movable bodies 82a and 82b are pulled by the springs 83a and 83b.
Move backwards by twice the distance of backward movement of 6. As a result, the wires 75a, 75b hanging on the movable vertical shaft sheaves 79a, 79b on the movable bodies 82a, 82b
The horizontally elongated lifting member 71, which is suspended by the wires 75a and 75b, is loosened by an amount twice the distance of the backward movement of the wires 75a and 75b, and is lowered by gravity. Therefore, the downward stroke of the horizontally elongated lifting member 71 is caused by the movement of the movable body 86.
, that is, four times the piston stroke of the cylinder/piston unit 85.

When raising the horizontally elongated lifting member 71 that has been lowered, the movable body 86 is moved forward by the cylinder/piston unit 85, and the wires 84a, 84 are moved forward.
The movable bodies 82a, 82b may be pulled against the springs 83a, 83b via the springs 83a, 83b. As a result, the horizontally elongated elevating member 71 lifts the wire 75 by a distance four times the forward movement distance of the movable body 86 (the piston stroke of the cylinder/piston unit 85).
It is lifted up by a and 75b.

Horizontally elongated lifting member 72 in bolt carrying means 66
As shown in FIG. 8, the elevating and lowering drive means 90 is exactly the same as the elevating and lowering drive means 9 for the oblong elevating and lowering member 71 in the bolt carrying means 65, and includes wires 91a and 91a corresponding to the wires 75a and 78b.
81b, movable bodies 92a and 92b corresponding to the movable bodies 82a and 82b, wires 93a and 93b corresponding to the wires 84a and 4b, a cylinder unit 94 corresponding to the cylinder piston unit 85, and a movable body 94 corresponding to the movable body 86. Since the movable body 95 and the like are used, and the functions are exactly the same, a description of the structure and function will be omitted.

Next, to explain how to use it, the horizontally long elevating member 71 of the bolt carrying means 65 is lowered to the lowering limit position as shown by the solid line in Fig. 5 by the cylinder/piston unit 85 of the elevating drive means 89 (Fig. 8). In this state, the bolts B to be polished are rolled onto the bolt support plate 73 of the horizontally elongated elevating member 71 from, for example, sleepers 96 arranged in parallel on the floor. The bolt B to be polished, which transfers onto the bolt support plate 73 and rolls downward in an inclined direction, comes into contact with the bolt elevating guide rail portion 44c of the bolt support plate 44 in the bolt temporary receiving means 42. In this state, when the horizontally elongated elevating member 71 is raised to the upper limit position shown by the solid line in Fig. 3 by the cylinder/piston unit 85 of the elevating drive means 89 (Fig. In order to remove the bolt from the elevating guide rail 44c, it rolls downward on the bolt support plate 73, moves onto the bolt support plate 44 of the bolt temporary receiving means 42 on the loading side, and comes into contact with the protrusion 44b at the lower end of the inclination. Stop.

On the other hand, the movable table 51 of the bolt moving means 50 is moved by the cylinder/piston unit 52 when the lifting table 54 is lowered to its lower limit by the cylinder/piston unit 55, as shown by the imaginary line in FIG. Move it to the side travel limit. At this time, the bolt support stand 56 on the lifting table 54
is located at a position corresponding to the bolt temporary receiving means 42, and the bolt support 57 is located at a position corresponding to the bolt temporary receiving means 42.
(Figure).

Once the bolts B to be polished are supported on each bolt support plate 44 of the bolt temporary receiving means 42 on the loading side as described above, the lifting table 54 in the bolt transfer means 50 is moved to the cylinder/piston unit 55.
The bolt B to be polished on the bolt support plate 44 is raised to the upper limit by the bolt support stand 56 on the elevator 54.
It is scooped up with a pair of V-shaped plates 56a. Next, move the movable base 51 of the bolt transfer means 50 to the cylinder.
After the piston unit 52 moves backward to the backward limit position shown by the solid line in FIG. The bolt B is transferred onto the bolt supporting rollers 6a, 6b of the pair of left and right roller units 2, 3 in the bolt supporting means 1, as shown in FIGS. 1 and 3.

The height of the axial center of the bolt B to be polished supported by the bolt support means 1 is the same as that of each roller unit 2, 3.
The pair of movable bodies 5a and 5b in the handle 7
It can be arbitrarily adjusted by rotating the screw shafts 8 in forward and backward directions to move them toward or away from each other, and by changing the distance between the front and rear pairs of bolt supporting rollers 6a and 6b. Further, the bolt positioning stopper 33 shown in FIG.
The fixing position is adjusted according to the length of the bolt B, and a freely rotatable ball 37 is adjacent to one end of the bolt B to be polished supported on the bolt support means 1. Of course, at this time, the height of the elevating member 36 is adjusted by the screw shaft 40 with a handle so that the freely rotatable ball 37 faces the axial center position of the bolt B to be polished.

Next, each air motor unit 12a to 12c of the polishing means 9 shown in FIG. chain 2
0 by the handle 21 to move the transverse movement table 10 laterally to the side where the bolt B to be polished is located. Three polishing rotary brushes 13a to 1 rotating in this manner
3c is slid around the threaded shaft portion b1 at one end of the bolt to be polished B supported by the bolt support means 1, and is moved at an appropriate speed in the direction of the bolt axis, thereby tightening the threaded shaft portion b1 at one end of the bolt. Polish. Of course, in this case, each polishing rotating brush 13a to 13c
The polishing rotating brushes 13a to 1 are placed in sliding contact with the three circumferential surfaces of the screw shaft b1 at one end of the bolt with equal pressure.
Adjust the position of 3c. That is, the polishing rotating brush 13a at the upper center fixes the air motor unit 12a by rotating the handle nut 2 forward and backward with the fixing handle nut 25 loosened. The polishing rotary brushes 13b, 13c on both sides of the lower part can be operated by loosening the nuts 29, 30 with fixing handles and swinging the air motor units 12b, 12c together with the arms 23, 24 in the direction toward or away from each other. The fixing handle nuts 29 and 30 may be tightened while adjusting the distance between the two rotating polishing brushes 13b and 13c.

As mentioned above, one end of the bolt B to be polished is the threaded shaft portion b1.
Polishing rotary brushes 13a to 13 that rotate around the circumferential surface of
c slides into contact with the rotating polishing brushes 13a to 13c under appropriate pressure, and the bolt B to be polished is supported by the frictional force between the rotating polishing brushes 13a and 13c at a circumferential speed that is moderately slower than the circumferential speed of the rotating polishing brushes 13a to 13c. Means 1
It rotates on both roller units 2 and 3. Therefore, the entire circumferential surface of the bolt one end threaded shaft portion b1 is polished by the rotating polishing brushes 13a to 13c. At this time, a thrust force in the axial direction is applied to the bolt B to be polished in the direction in which the polishing means 9 moves, and it tends to skid sideways in the axial direction on the bolt support means 1. Side slipping of the bolt B in the axial direction is prevented by the other end surface of the polished bolt B coming into contact with the freely rotatable ball 37 of the bolt positioning stopper 33. Of course, the freely rotating ball 37 is the bolt B to be polished.
Since the position is adjusted so as to abut the other end axis position, there is no risk of interfering with the rotation of the bolt B to be polished.

Note that the control circuit is designed so that the cylinder/piston units 52 and 55 of the bolt transfer means 50 cannot be operated while the air motor units 12a to 12c of the polishing means 9 are in operation. It is desirable to perform an interlock at the same time to avoid accidents. Further, although the polishing means 9 is configured to be manually reciprocated, it can also be configured to be mechanically reciprocated using a motor or a cylinder/piston unit.

After polishing the threaded shaft portion b1 at one end of the bolt B to be polished as described above, the rotating brush 13 for polishing is operated by the air motor units 12a to 12c.
The drives of a to 13c are stopped, the handle 21 is reversed, and the polishing means 9 is temporarily moved backward to the standby position shown in FIGS. 1 and 2. Then, the lifting table 54 of the bolt transfer means 50 is raised to its upper limit by the cylinder/piston unit 55 again, and the bolt B to be polished on the bolt support means 1 is lifted by the bolt support means 56 as shown in FIG. . Next, the bolt B to be polished on the bolt support stand 56
By manually pushing the end of the bolt B in a horizontal direction, the bolt B to be polished is horizontally rotated about a vertical axis 60 (FIG. 6) with respect to the lifting table 54 together with the bolt support table 56. At the start of this rotation, the ball 63a of the spring plunger 63 (FIG. 6), which had stopped the rotation of the bolt support base 56, moves into the recess 64a against the biasing force of the internal biasing spring.
escape from In this way, the bolt B to be polished is
Rotate 180 degrees and remove the spring plunger 63.
The ball 63a is placed in the recess 64 provided on the opposite side.
b by the biasing force of the spring, and the bolt support 56 is elastically locked. As a result, the bolt B to be polished on the bolt support base 56 has the other end threaded shaft portion b2.
is in a state where it faces the polishing means 9. It should be noted that the bolt B to be polished, which rotates horizontally together with the bolt support stand 56 in this way, is attached to the bolt support stand 5 on the same elevating table 54.
As shown in FIG. 5, the bolt support stand 57 is constructed to be slightly lower than the bolt support stand 56 so as not to contact the bolt support stand 56.

Thereafter, by lowering the elevator 54 of the re-bolt transfer means 50 to the lowering limit and transferring the bolt B to be polished onto the bolt support means 1 again, and operating the polishing means 9 as described above, the bolt to be polished The threaded shaft portion b2 at the other end of B can be similarly polished. During the polishing work of the threaded shaft portion b2 at the other end of the bolt, the movable portion 51 of the bolt transfer means 50 is moved by the cylinder/piston unit 52 to the forward limit position shown by the imaginary line in FIG. 5, and the bolt support 56 is carried in. At the same time, the bolt support 57 is moved to a position directly below the bolt B being polished.

When the polishing of the threaded shaft portions b1 and b2 at both ends of the bolt B to be polished is completed, the lifting platform 54 of the bolt transfer means 50 is raised again, and the polished bolt B on the bolt support means 1 is transferred to the bolt transfer means 50. Lift it up using the bolt support stand 57. Next, bolt transfer means 50
The movable base 51 of the cylinder/piston unit 5
2, the polished bolt B lifted by the bolt support stand 57 is moved horizontally to just above the bolt temporary receiving means 43 on the unloading side. After that, by lowering the bolt support base 57 together with the lifting base 54 to the lowering limit, the bolt support base 5
The polished bolts B on 7 are transferred onto each bolt support plate 45 in the bolt temporary receiving means 43.

The polished bolt B that has been transferred onto the bolt support plate 45 rolls downward, and as shown in FIG. It automatically moves onto the bolt support plate 74. Of course, the bolt support plate 45
The automatic opening/closing stopper 46 attached to the spring 49 (third
Since the bolt support plate 4 is lying down against the
5 onto the bolt support plate 74 is not obstructed.

In other words, the bolt transfer means 50 transfers the polished bolt B to the bolt temporary receiving means 4 on the unloading side.
3, if the horizontally elongated elevating member 72 of the bolt carrying means 66 is not in the bolt receiving position shown in FIG.
As shown in the figure, a spring 49 prevents the bolt B that has been transferred onto the bolt support plate 45 from rolling off the bolt support plate 45 in the upright position. When the horizontally elongated elevating member 72 of the bolt carrying means 66 rises to a predetermined bolt receiving position, the automatic opening/closing stopper 46 is automatically opened as described above, and the bolt B, which was stopped by this stopper 46, is moved up and down in the horizontally elongated manner. It rolls onto the bolt support plate 74 on the member 72 and moves onto it.

Further, as previously explained, the next bolt B to be polished is moved by the bolt carrying means 65 to each bolt support plate 44 in the bolt temporary receiving means 42 on the carrying side.
By supplying the polished bolts B to the temporary bolt receiving means 43 on the delivery side, the bolts to be polished B waiting on the temporary bolt receiving means 42 on the delivery side can be transferred. It can be transferred onto the bolt support means 1 using the bolt support stand 56 of the means 50.

Horizontally elongated lifting member 72 in bolt carrying means 66
Once the polished bolt B is carried out onto the bolt support plate 74, the horizontally elongated lifting member 72 is lowered to the floor by the lifting drive means 90 (FIG. 8), and the polished bolt B on the bolt support plate 74 is taken out. I can do it. At this time, as shown by the imaginary line in FIG. 5, the sleeper 97 whose upper surface is inclined is placed at an appropriate position on the floor surface, and the polished bolt B supported on the bolt support plate 74 of the horizontally elongated elevating member 72 is automatically moved. By moving the bolt from the top of the bolt support plate 74 to the sleeper 97, it is possible to save labor in carrying out the work.

In addition, when the length of the bolt to be polished changes as shown in the imaginary line B' of the bolt to be polished in each of FIGS. 1 to 3, the bolt positioning stopper 3
3 should be adjusted according to the end position of the bolt to be polished, and if the diameter of the bolt to be polished changes, the bolts of each roller unit 2, 3 in the bolt support means 1 may be adjusted. Support roller 6
a, 6b, the position of each polishing rotary brush 13a to 13c (air motor unit 12a to 12c) in the polishing means 9, and the height of the freely rotating ball 37 in the bolt positioning stopper 33, respectively. Just adjust it according to the diameter of the bolt to be polished. In the bolt support means 1 shown in the embodiment,
Since the bolt supporting rollers 6a and 6b are moved horizontally to change the interval, when the diameter of the bolt to be polished changes, the height of the bolt axis remains constant even if the interval between the rollers 6a and 6b is changed. I can't keep it. Therefore, the height of the freely rotatable ball 37 of the bolt positioning stopper 33 is configured to be changeable, and the bolt supporting rollers 6a, 6b are adjusted in the far and near directions relative to the axis of the bolt to be polished, which is located at a constant height. If the bolts are configured to move toward and away from each other in conjunction with each other (diagonally up and down), the bolt to be polished can be supported with its axis always kept at a constant height regardless of its diameter.

Further, each polishing rotating brush 1 in the polishing means 9
Although the bolt B to be polished is caused to rotate by the contact rotation of the bolts 3a to 13c, at least one of the bolt supporting rollers 6a and 6b of each roller unit 2 and 3 in the bolt supporting means 1 is forcibly driven. It is also possible to provide a motor and forcibly rotate the bolt B to be polished by this drive roller. Further, although the polishing means 9 was disposed only on one end side of the bolt B to be polished supported by the bolt support means 1, the polishing means 9 was disposed on both sides of the bolt B to be polished in the axial direction, and the bolt to be polished was It is also possible to configure the screw shaft portions b1 and b2 at both ends of B to be polished simultaneously or sequentially. Of course, if a normal type bolt having a head at one end is handled as the bolt to be polished, the polishing means 9 is provided only on one side as in the embodiment, and the bolt positioning stopper 33 is provided on the other side. It is desirable to set up

Note that the work of supplying and unloading the bolts to be polished to the bolt temporary receiving means provided on each of the loading and unloading sides can be carried out by a hoist, a manipulator, or a forklift using an appropriate attachment, but in particular, When the bolt carrying means 65 and bolt carrying means 66 as shown in FIG. It is also possible to make the polishing work unmanned by fully automatically linking them using a sequence circuit.

(Operations and Effects of the Invention) According to the bolt polishing device of the present invention that can be implemented and used as described above, the bolt to be polished can be transferred (loaded) to the polishing action position (bolt support means 1) and the polishing action can be performed. The polished bolt can be taken out (unloaded) from the position at the same time, and in the polishing position (bolt support means 1), the tip screw shaft of the supported bolt is mechanically polished by the polishing means. Compared to traditional manual methods,
It is possible to significantly improve work efficiency and save labor, and in particular, according to the configuration of the present invention, the following unique effects can be expected.

That is, since the polishing means for polishing the tip threaded shaft portion of the bolt to be polished supported on the bolt support means is movable back and forth in the axial direction of the bolt to be polished, the polishing means supported on the bolt support means Even if the position of the tip threaded shaft of the bolt to be polished changes in the bolt axial direction, the polishing means can be reliably applied to the tip threaded shaft of the bolt to be polished by moving the polishing means in the bolt axial direction. I can do it. In addition, even if the polishing means is small in width compared to the length of the bolt end threaded shaft, by polishing while moving the polishing means in the bolt axial direction, the entire area of the bolt end threaded shaft can be reliably polished. It can be polished to

For this reason, even though the end screw shafts of various bolts having different overall lengths and lengths of the tip screw shaft portions can be reliably polished by the polishing means, the bolts are long in the axial direction. It is not necessary to use a large-sized polishing means, and a compact and inexpensive polishing means can be used.

Furthermore, according to the configuration of the present invention, the bolt on the temporary bolt receiving means on the carry-in side is transferred onto the bolt supporting means, and the polished bolt on the bolt supporting means is transferred onto the temporary bolt receiving means on the carrying-out side. The bolt transfer means to be transferred includes a pair of front and rear bolt support stands arranged in parallel in the front-rear direction at an interval substantially equal to the interval between the bolt support means and each bolt temporary receiving means, and both of these bolt support stands. a lifting drive means for raising and lowering the bolts integrally between a high level and a low level with respect to the support level of the bolt temporary receiving means and the bolt supporting means; and a back-and-forth movement drive means that integrally moves back and forth between a position corresponding to the bolt support means and a position corresponding to the bolt temporary receiving means on the unloading side. raising the bolt support stand together to a high level, and simultaneously lifting the bolt to be polished on the bolt temporary holding stand on the delivery side and the polished bolt on the bolt support means at the polishing action position;
Next, by moving both bolt supports forward by a predetermined stroke, the bolt to be polished is transported to the polishing position, and at the same time, the polished bolt is transported to a position above the bolt temporary receiving stage on the unloading side, and then, By lowering both of the bolt supports together to a low level, it is possible to lower the bolt to be polished onto the bolt support means at the polishing position and at the same time lower the polished bolt onto the temporary bolt receiving table on the unloading side. I can do it. Finally, by moving both bolt supports back by a predetermined stroke, preparation for next conveyance is completed.

According to the configuration of the present invention, the bolt conveying means for loading and unloading can be composed of two bolt supports, one elevating drive means and one longitudinal drive means,
Compared to using a conventional workpiece conveyance means that intermittently feeds the workpiece at regular intervals on a circular endless conveyance path, or a workpiece conveyance means that uses both a manipulator dedicated to loading and a manipulator dedicated to unloading, the loading speed is reduced. The space occupied by the unloading means can be made very small, and costs can be reduced.

Therefore, according to the configuration of the present invention, it is possible to implement a bolt polishing device that is capable of mechanically and automatically polishing the tip screw shafts of various large and heavy bolts in a small size and at a very low cost. The contribution it can make to the industry is extremely significant.

[Brief explanation of drawings]

Figure 1 is a partially cross-sectional plan view, Figure 2 is a partially vertical front view (bolt loading/unloading means is omitted), Figures 3 to 5 are vertical side views of each part, and Figure 6 is a rotating view. A longitudinal side view showing the support structure of the bolt support base,
FIG. 7 is a cross-sectional plan view of the same, and FIG. 8 is a cross-sectional plan view showing the elevating and lowering driving means of the bolt loading/unloading means. DESCRIPTION OF SYMBOLS 1... Bolt support means, 2, 3... Roller unit, 4, 34, 81a, 81b... Slide guide, 5a, 5b, 82a, 82b, 86... Movable body, 6a, 6b... Bolt support roller, 8, 4
0... Screw shaft with handle, 9... Polishing means, 10... Lateral moving table, 11... Lateral moving table driving means, 12a to 12c...
Air motor unit, 13a-13b... Rotating polishing brush, 14, 58... Guide rail, 15,
59, 69, 70...Guide wheel, 18, 19
...Tooth ring, 21...A handle for rotating the tooth wheel 19, 22
... Bracket that can be raised and lowered, 23, 24 ... Arm that can be swung and fixed, 25, 29, 30, 39 ... Nut (or bolt) with fixing handle, 33 ... Stopper for bolt positioning, 35, 51 ... Movable base,
36... Lifting member, 37... Freely rotating ball, 41
a, 41b... Bolt guide, 42, 43... Bolt temporary receiving means, 44, 45, 73, 74... Bolt support plate, 46... Automatic opening/closing stopper, 48...
Arm with roller, 49, 83a, 83b... Spring, 50... Bolt transfer means, 52, 55,
85, 94...Cylinder/piston unit, 5
3... Lifting rod, 54... Lifting table, 56, 57... Pair of front and rear bolt supports, 56a, 57a... V-shaped plate, 63... Spring plunger for preventing rotation,
64a, 64b...Ball fitting recess, 65...Bolt carrying-in means, 66...Bolt carrying-out means, 67, 68...
Lifting guide column, 71, 72...Horizontally elongated lifting member, 7
5a, 75b, 91a, 91b...Elevating drive wire, 76a, 76b, 77a, 77b...Horizontal axis sheave, 78a, 78b...Vertical axis sheave, 79
a, 79b, 87a, 87b...Movable vertical shaft sheave, 80a, 80b, 88a, 88b...Wire end locking fitting, 84a, 84b, 93a, 93b...
Wire, 89, 90... Laterally elongated lifting member 71, 72
B...Bolt to be polished, F...Base.

Claims (1)

[Scope of Claims] 1. A bolt polishing device in which polishing means for a threaded shaft portion of a bolt end is disposed on at least one axial direction of a bolt to be polished that is automatically supported on a bolt support means, comprising: Temporary bolt receiving means are disposed on the bolt supporting means at symmetrical positions on both sides of the bolt supporting means in the longitudinal direction orthogonal to the axial direction of the bolt, and the bolts on the temporary bolt receiving means on the loading side are provided with temporary bolt receiving means. In a bolt polishing device that is provided with a bolt transfer means that transfers the bolt onto the bolt support means and transfers the polished bolt on the bolt support means onto the bolt temporary receiving means on the delivery side, The polishing means of the tip screw shaft portion is capable of reciprocating in the axial direction of the bolt to be polished on the bolt support means, and the bolt transfer means is arranged between the bolt support means and each bolt temporary receiving means. a pair of front and rear bolt supports arranged in parallel in the front-rear direction at intervals substantially equal to the spacing of the bolt support means, and a pair of front and rear bolt support stands arranged in parallel in the front-rear direction at intervals substantially equal to the spacing of the bolt support means; an elevating drive means for raising and lowering the bolts together between the two; a position corresponding to the temporary bolt receiving means and the bolt supporting means on the carry-in side; and a position corresponding to the temporary bolt receiving means on the carry-in side and the temporary bolt receiving means on the carry-out side. A bolt polishing device characterized by comprising: a forward and backward drive means for integrally reciprocating between a position where the bolt is polished and a position where the bolt is polished;