JPH05293750A - Polisher and work end face finishing device utilizing the polisher - Google Patents

Abstract

PURPOSE:To develop and provide an end face finishing device which performs neat finishing so that a curved, surface extending along a longitudinal direction is formed in a neat linear state during polishing of the curved surface when a curve is formed at the end face of a plate-form work. CONSTITUTION:A polishing belt 38 is induced in a zigzagging state by means of driven pulleys 36 and 37. During induction of the polishing belt, the end face Wa of a work W is pressed between the driven pulleys, and this state is held by means of wheels 41 and 42 brought into contact with the surface and the back of the work W, an opening angle maintaining mechanism 45 to prevent separation of the driven pulleys 36 and 37, and a polishing energizing mechanism 15 to energize the press force of the polishing belt 38. By running a running table 5 along a rail member 2 placed on the work W for holding, a linear polishing work is effected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel polishing machine for polishing an end surface of a plate-shaped object to be polished and an end surface finishing apparatus for the object to be polished using this polishing machine.

[0002]

2. Description of the Related Art In the case of forming a rounded surface which is smoothly continuous between the front side and the back side of an end surface of a stone plate or the like, the work of polishing the rounded surface is There has been a strong demand for the development of a device that enables even a person who is not a skilled person to make the surface round and uniform without disturbing the rounded surface.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel polishing machine that can satisfy the conventional requirements and an end surface finishing apparatus using this polishing machine.

[0004]

In order to achieve the above object, the present invention employs the following means. That is, the polishing machine 3 used for finishing the end surface of the plate-shaped workpiece W
0, a drive unit 31 such as a motor and the drive unit 31
Polisher body 33 having a drive pulley 32 connected to the
A fixed lever portion 34 protruding from the polishing machine main body 33 in a direction orthogonal to the rotational axis of the driving pulley 32; and a root portion of the fixed lever portion 34 connected to the polishing machine main body 33 so as to be vertically swingable. Swing lever portion 35 protruding in the same direction
And a driven pulley 36 provided on each of the fixed lever portion 34 and the swing lever portion 35 near the tip end thereof so that the rotation axis center of the driving pulley 32 and the rotation axis center are parallel to each other.
37, the driving pulley 32 and the driven pulley 3
Circularly movable annular polishing belt 38, which is hung between 6 and 37, fixed lever portion 34 and swing lever portion 3
In FIG. 5, wheels 41, which come into contact with the front and back flat surfaces of the object W to be polished on the tip side further than the driven pulleys 36 and 37, and whose rotational directions are along the object end surface Wa of the object W to be polished,
42, and an opening angle maintaining mechanism 45 provided at the hip joint portion of the fixed lever portion 34 and the swing lever portion 35.

[0005]

The present invention has the following functions. A polishing belt 38 is stretched between the driven pulley 36 provided near the tip of the fixed lever portion 34 and the driven pulley 37 provided near the tip of the swing lever portion 35 between the upper and lower sides. However, when the polishing belt 38 of this portion is pressed against the polished end surface Wa of the workpiece W, the swing lever portion 35 swings so as to narrow the opening angle with respect to the fixed lever portion 34. As a result, the wheels 41, 42 provided on the tip side of the driven pulleys 36, 37 of the fixed lever portion 34 and the swing lever portion 35 further face the front and back surfaces of the workpiece W from above and below. They are sandwiched so that they come into contact with each other. Therefore, the opening angle maintaining mechanism 45 is operated to fix the opening angle between the fixed lever portion 34 and the swing lever portion 35, and then the drive portion 31 is operated. Therefore, the driving pulley 3
The polishing belt 38, which is stretched between the two and the driven pulleys 36 and 37, circulates to perform polishing.
In this state, the wheels 41 and 42 provided on the fixed lever portion 34 and the swing lever portion 35 are used to rotate the workpiece W.
Is moved along the end surface Wa to be polished so that the polishing region has a linear width.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the lower side of FIG. 1, the rear means the upper side of FIG. 1, the left means the left side of FIG. 1, and the right means the right side of FIG. As shown in FIGS. 1 and 2, a polishing machine 30
Is a rail member 2 and a traveling table 5 that support the traveling of the polishing machine 30 along the end surface Wa of the plate-shaped object W to be polished.
A guide bar 9 and a moving frame 10 for guiding the polishing machine 30 toward and away from the end surface Wa to be polished, and the polishing machine 30 to the end surface Wa to be polished at the time of polishing work.
Together with the polishing biasing mechanism 15 for preventing chattering in the separating direction, the end surface finishing device 1 for the workpiece W is configured as a whole. Therefore, first, the configuration of each of the above parts as the end surface finishing device 1 will be described.

The rail member 2 is placed on the upper surface of the object W to be polished so as to extend in the front-rear direction, and the clamp tool 3
Horizontal mounting plate 2b that can be stopped with, and this mounting plate 2b
The standing wall portion 2a having a predetermined thickness and standing upright vertically.
In addition, an L-shaped angle member or the like is actually used. When the rail member 2 is clamped, the backing reinforcing plate 4 or the like is preferably applied to the back surface of the workpiece W.

The traveling platform 5 is in the form of a box that is elongated in the front-rear direction and is open vertically. Inside the box, the standing wall portions 2a of the rail member 2 are opposed from both left and right sides. A pair of upper and lower guide rollers 6 and 6 sandwiching the rotation axis vertically, and a traveling roller 7 that contacts the upper surface of the standing wall portion 2a of the rail member 2 and has the rotation axis horizontally. Each is rotatably provided. Two pairs of the upper and lower guide rollers 6 and 6 and the traveling roller 7 are provided near the front and rear ends of the traveling table 5. Therefore, the traveling table 5 can travel along the rail member 2 by gripping the grip 8 (see FIG. 4) provided upright on the front upper part by hand. Two guide bars 9, 9 penetrating in a skewer-like shape in a direction orthogonal to the longitudinal direction of the rail member 2 are provided at the upper and left side portions of the traveling platform 5.
Are provided, and these guide bars 9 and 9 project to the right of the traveling table 5, that is, toward the side where the end surface Wa of the object W to be polished is located.

The movable frame 10 is slidably fitted into two guide bars 9 and 9 protruding from the traveling table 5, and two slide blocks 11 and 1 which are long in the front-rear direction.
1 and a slide base 12 provided so as to connect the lower surfaces of the slide blocks 11 and 11. As shown in FIG. 4, the slide base 12 has a hanging wall portion 13 having a flat surface portion directed downward in the left-right direction, and a polishing machine 30 described later can be attached to the hanging wall portion 13. It has become.

The polishing urging mechanism 15 is composed of a crossover plate 16 extending from the center of the upper frame of the traveling table 5 to the left and right, and an operation lever held above the crossover plate 16 so as to be swingable in the left-right direction. 17, a pulling metal fitting 18 connected to the movable frame 10 so as to be swingable at a portion radially displaced from the swing axis of the operation lever 17, and a slide of the movable frame 10 near the traveling table 5. A towing plate 19 standing upright along the block 11, a towing metal fitting 20 provided through the towing plate 19 and having a hook portion 21 at the left end portion and a stroke adjusting screw portion 22 at the right end side, and The stroke adjusting screw portion 22 of the tow metal fitting 20 is provided with an adjusting nut 23. Therefore, when the operation lever 17 is raised, the moving frame 10 is moved to the traveling platform 5 according to the lengths of the pulling fitting 18 and the pulling fitting 20.
The moving frame 10 can be attracted to the traveling platform 5 by tilting the operation lever 17 to the left, and both can be performed under one motion. is there. If the spring 25 is sandwiched between the traveling bar 5 and the moving frame 10 with respect to the guide bars 9, 9, the moving frame 10 can be momentarily separated when the operation lever 17 is raised. It becomes more convenient.

Next, the polishing machine 30 provided for the moving frame 10 will be described. As shown in FIGS. 1 to 4, the polishing machine 30 holds a drive unit 31 such as a fluid pressure (eg, air) motor or an electric motor on the rear surface, and connects the drive unit 31 to the corresponding front surface. It has a plate-shaped grinder main body 33 in which a plane portion is directed in the vertical and horizontal directions in which the driving pulley 32 is arranged. Moreover, as shown in FIG.
The polishing machine main body 33 is integrally provided with a fixed lever portion 34 that is orthogonal to the rotation axis of the driving pulley 32 and protrudes to the left of the rotation axis center of the driven pulley 32. The parts are connected so as to be vertically swingable, and a swing lever part 35 that projects in the same direction as the fixed lever part 34 is provided. Driven pulleys 36 and 37 are rotatably provided at respective portions of the fixed lever portion 34 and the swing lever portion 35 near the tips thereof, and the rotational axes of the driven pulleys 36 and 37 are the same as those of the driven pulley 32. It is designed to be parallel to the axis of rotation. An annular polishing belt 38 is stretched between the driving pulley 32 and the driven pulleys 36 and 37.
The tension of the polishing belt 38 is adjusted so as to allow some slack between the driven pulley 36 and the driven pulley 37, and the slacked portion sandwiches the polished end surface Wa of the workpiece W. It is like this.
Although not shown, these pulleys 32, 36, 37
Has a structure such that it is formed into a middle-bulging cylindrical shape such as a drum, or is provided with flanges at the front and rear ends of the cylindrical portion, so that the polishing belt 38 is prevented from coming off and running unbalanced. Is becoming By the way, as shown in FIG. 3, the screw portion 36a for attaching the driven pulley 36 to the fixed lever portion 34 is provided in the hanging wall portion 13 (see FIG.
Or, see FIG. 4), the nut 40 is adapted to be screw-fitted at a portion which also penetrates through, and so as to be adjacent to this,
The polishing machine 30 for the moving frame 10 cooperates with the bolt 39 screwed into the fixed lever portion 34 from the hanging wall portion 13 side.
Is being fixed. Although not shown, in these fixing portions, one or both of the screw insertion hole portions provided in the hanging wall portion 13 are vertically long holes, so that the polishing machine 30 can be mounted in the vertical direction. It can be adjusted with.

As shown in FIG. 2, the fixed lever portion 34 and the swing lever portion 35 are respectively provided with driven pulleys 36,
It has projecting portions 34a and 35a that extend further leftward than the portion where 37 is provided. Wheels 41 and 42, which are vertically opposed to each other via wheel bases 43 and 44, are provided on the respective protruding portions 34a and 35a. Each of these wheels 41, 42 has its axis of rotation directed to the left and right, and is rotatable back and forth along the end surface Wa of the object W to be polished. Note that, as shown in FIG. 3, the downward facing wheels 41 on the side of the fixed lever portion 34 are two on the wheel base 43, one on the front and the other on the left, and one on the left side thereof, a total of three. The upward wheel 42 corresponds to the left-right middle of the downward wheel 41, and
In FIG. 4, two pieces (not shown) are arranged at the front and rear.

An opening angle maintaining mechanism 45 is provided at the hip joint portion between the fixed lever portion 34 and the swing lever portion 35. The opening angle maintaining mechanism 45 includes a bolt holding joint 46 rotatably connected to the base of the swing lever portion 35.
And a headless bolt 47 connected upward to the bolt holding joint 46 and screwed with a wing nut 49, and fixed to an upper part near the root of the fixing lever portion 34 to fit the headless bolt 47 up and down. It has a nut pedestal 48 (see FIG. 1) in which a notch that penetrates is formed. Therefore, in the state where the wing nut 49 is in contact with the nut support 48,
The opening angle of the rocking lever portion 35 with respect to the fixed lever portion 34 is prevented from expanding, and the state is maintained.

[0014]

Next, the operation of the apparatus of the embodiment (as a whole of the end surface finishing apparatus 1) will be described. First, as shown in FIG. 1, the rail member 2 is mounted and held on the upper surface of the object W to be polished so as to be parallel to the end surface Wa to be polished, and the traveling table 5 is set on the rail member 2 and along the guide bar 9. The moving frame 10 is pulled out to the right of the end surface Wa to be polished. Then, the wing nut 49 (see FIG. 2) of the opening angle maintaining mechanism 45 is loosened, and the movable frame 10 is moved to the workpiece W together with the polishing machine 30.
Push towards. As shown in FIG. 2, this causes the polishing belt 38, which is stretched between the upper and lower sides of the driven pulley 36 and the driven pulley 37, to be pressed against the end surface Wa to be polished, so that the swing lever portion 35 is fixed. The wheels 41 and 42 provided further on the tip side of the rocking member swing so as to narrow the opening toward the side, and come into contact with both the front and back surfaces of the workpiece W. In this state, if the wing nut 49 of the opening angle maintaining mechanism 45 is tightened, the drive unit 31 is actuated and the grip 8 (see FIG. 4) is gripped so that the traveling table 5 is moved along the polished end surface Wa. Drive back and forth. When the object W to be polished is a stone material, the water supply tube 50 faces the polishing belt 38 from the wheel 41 side of the fixed lever portion 34.
It is advisable to spray water by means of water, and when the object W to be polished is a metal material, cutting oil is blown, and when the object W to be polished is wood or a resin material, air is blown toward the polishing belt 38. You should put it on. Then, in order to prevent the polishing powder from splashing to the entire surface with the water, cutting oil, air, etc., the upper part of the polishing belt 38 extending from the driven pulley 36 to the driving pulley 32, and the driving pulley 32 to the lower right side thereof. It is preferable to have a structure in which a predetermined transparent region is covered with a flexible transparent cover band 52.

By the way, as shown in FIG. 5, for an object W to be polished whose end surface Wa to be polished has a single chamfered radius,
In the swing lever portion 35, a swingable short and small swing portion 51 holding the driven pulley 37 is provided separately from the lever main body portion holding the wheel 42, and the short and small swing portion 51 is provided separately. Can be dealt with by having a structure that can fix the state in which the lever body portion is directed downward from around the central portion. As described above, the detailed structure and the like of the polishing machine 30 according to the present invention and the end surface finishing apparatus 1 using the same can be appropriately changed according to the embodiment.

[0016]

The present invention has the following effects due to the above-described structure. Even if you are not a skilled person, the work of polishing the rounded surface of the end surface part of the object to be polished such as a stone plate should not be disturbed along the longitudinal direction, and it should be a constant and beautiful one. I was able to do it.

[Brief description of drawings]

FIG. 1 is a plan view showing an end surface finishing device according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV of FIG.

FIG. 5 is a front sectional view showing another embodiment of the polishing machine according to the present invention.

[Explanation of symbols]

 1 End Face Finishing Device 2 Rail Member 5 Traveling Base 9 Guide Bar 10 Moving Frame 15 Polishing Energizing Mechanism 30 Polishing Machine 31 Drive Part 32 Driving Pulley 33 Polishing Machine Main Body 34 Fixing Lever 35 Swing Lever 36 36 Followed Pulley (Fixing Lever) 37) Driven pulley (on the rocking lever side) 38 Polishing belt 41 Wheels (on the fixed lever side) 42 Wheels (on the rocking lever side) 45 Opening angle maintenance mechanism

Claims (2)

[Claims] 1. A polishing machine 30 used for finishing an end surface of a plate-shaped object to be polished W, which has a drive part 31 such as a motor and a drive pulley 32 connected to the drive part 31, and a main body 33 of the polisher. A fixed lever portion 34 protruding from the polishing machine main body 33 in a direction orthogonal to the rotational axis of the driving pulley 32; and a root portion of the fixed lever portion 34 connected to the polishing machine main body 33 so as to be vertically swingable. The swing lever portion 35 projecting in the same direction and the rotary shaft center of the drive pulley 32 are provided in parallel with each other so as to be parallel to each other. The driven pulleys 36 and 37, a circular polishing belt 38 which is circulated freely and hung between the driving pulley 32 and the driven pulleys 36 and 37, and the fixed lever portion 34 and the swing lever portion 35. Driven pulleys 36 and 3 respectively
Wheels 41 and 42, which come into contact with the front and back flat surfaces of the workpiece W on the tip side further than 7, and whose rotation direction is along the polished end surface Wa of the workpiece W, the fixed lever portion 34, and the swing lever. A polishing machine having a portion 35 and an opening angle maintaining mechanism 45 provided at a hip joint. 2. A rail member 2 mounted and held on an upper surface of an object W to be polished so as to be parallel to an end surface Wa to be polished, a traveling platform 5 which can travel along the rail member 2, and this traveling platform. 5, a movable frame 10 which is movable along guide bars 9, 9 protruding toward the side where the end surface Wa of the object W to be polished is located, and the wheels 41, 42 side with respect to the movable frame 10. The polishing machine 30 according to claim 1, which is provided toward the workpiece W, and the polishing urging mechanism 15 which urges and urges the moving frame 10 toward the traveling table 5. End surface finishing device.