JP2004508204A - Orbital polishing machine applicable to human body engineering - Google Patents

Abstract

An outer casing (17), a motor (24) having a shaft member (71) in the outer casing (17), a pad (14) joined to the motor (24), and a substantially vertical axis of the pad (14). A surface (70) extending perpendicular to (71), a protective cover (13) around the pad (14), an opening (85) in the protective cover (13), and a debris discharge tube (12). (10, 150). The waste discharge pipe (12) has an inner end (84) communicating with the opening (85) and a waste discharge pipe end (12) and extends at an acute angle with the surface (70) of the pad (14). An outer end (83). A track polisher (220) in which a pad (233) is held below the polisher outer casing by pillar units (242) on two opposite sides of a motor (225). The bearing (276) holds the shaft member (275) on which the pad (233) is placed, and the hole (184) in the motor shaft member (227) covers the compressed air with the bearing (276). It is guided to pass through the storage room (278).

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in surface treatment tools applicable to ergonomics, the tool having a pad, which joins its flat surface with the surface of a workpiece to polish or polish the workpiece. The invention particularly relates to an improved orbital polisher.
[0002]
[Background of the Invention]
Conventionally, when an orbital grinder is operated, a force is created on the polishing surface and this force feeds back to the operator's hand and arm via a lever. This lever is the height between the surface of the polishing machine at the vertical center line of the track polishing machine and the upper end of the casing of the polishing machine. Thus, the smaller the height, the less force the operator will need to overcome the force generated on the surface of the polishing plate than if the height were high.
[0003]
In orbital grinders, besides the lower the height of the tool, the more preferably the connection between the casing and the pad is sufficiently flexible, so that a good orbiting action can be produced. It provides good longitudinal strength and allows the pad to oscillate in the plane to be closed, i.e., to limit movement in its hanging direction as much as possible.
[0004]
In the conventional track polishing machine, different types of connection are provided between the outer casing and the pad, and one of the types connects the pad and the outer casing by a rubber column having a considerably flexible central portion. . Such schemes provide sufficient track resilience but may cause the pad to move out of the required plane. In the case of another type of articulated system, a hard plastic multi-column type column unit is provided between the pad and the outer casing at each corner of the pad. These rigid column units provide good longitudinal stability so that the pads can be confined to the required plane, but the more they are formed to a given length, the more lateral flexibility they have. , Thereby providing a good orbiting action, thereby increasing the height of the polisher.
[0005]
In addition, in all conventional track polishing machines, the shavings enter the casing containing the bearing, which holds the shaft on which the pads are arranged. Polishing debris that enters the casing can shorten the life of the bearing, thus affecting the operation of the pad outside of the ideal plane. In the case of an orbital polisher using a central vacuum system, a large amount of air is drawn into the polisher casing, thereby removing abrasive and foreign particles. The aforesaid problem becomes particularly apparent in such a grinder. In this case, at each edge, a swirling airflow is generated at each edge of the eccentric casing of the shaft member holding the pad by housing the bearing. For this reason, the polishing machine and the foreign particles generate a change in positive / negative pressure by the operation of the tool, and are sucked into the bearing section. In the case of U.S. Pat. No. 4,854,085, triple seals were used and efforts were made to reduce the amount of foreign material entering the bearing zone, but this type of method certainly increases the life of the bearing to some extent, It is an object of the present invention to overcome each of the disadvantages of the prior art.
[0006]
[Means for Solving the Problems]
The present invention is relatively low in height, makes the polisher ergonomic, has good longitudinal strength between its outer casing and its pad, and has sufficient lateral flexibility. It is a primary object to provide an improved track polisher that can provide a degree of curvature, achieve good track performance, and limit the pad within the track plane.
[0007]
The present invention also provides a unique mounting scheme between the outer casing of the track polishing machine and the pad that can limit the pad within the operating track plane and provide the pad with good lateral flexibility. Other purposes.
[0008]
Further, the present invention can effectively prevent foreign matters from entering into the eccentric casing accommodating the bearing of the shaft member of the track grinding machine, and can effectively extend the service life of the bearing. It is another object of the present invention to provide an improved structure having a structure arrangement that can achieve an effect exceeding the effect that can be achieved by each sealing method.
[0009]
Explanations will be given below so that other objects and advantages of the present invention can be easily understood.
[0010]
The present invention provides an outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and a motor interposed between the outer casing and the pad base. An orbital polisher is provided having first and second rows of spaced plastic columns, each on two opposite sides.
[0011]
Also, the present invention provides a shaft member disposed in the motor, a rotor attached to the shaft member, a compressed air guide tube for guiding compressed air to the rotor in the motor, and the shaft member. An eccentric casing, a storage chamber in the eccentric casing, at least one bearing located in the eccentric casing, a pad base fixed to the eccentric casing, and a compressed air located in the motor, A track polishing machine as described above, comprising: a guide unit for guiding into a storage room.
[0012]
Further, the present invention provides a plastic column unit used in a track polishing machine, including an upper rod member, a lower rod member, and a plurality of spacing columns interposed between the upper rod member and the lower rod member. I will provide a.
[0013]
Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings to clarify aspects of the present invention.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention relates to an orbital grinder, whose height is quite low, so that it is applicable to ergonomics, this type of grinder also has good longitudinal strength, and the pad is placed in a predetermined closed orbit plane. Positioned and has good track elasticity. The low height is formed in part by the compressed air motor that drives the polisher. This type of motor is the same as the motor used by the three types of random orbital polishing machines described above, and this will be described in detail below. The low height is affected by the connection of the columns used between the outer casing and the pad, and such a connection method can not only provide good track elasticity, but also provide good longitudinal strength. To provide.
[0015]
The compressed air motor used in the track grinding machine of the present invention is also used in the three basic types of random track grinding machines described below. The first and the most basic type being the non-vacuum type, which do not have any interlocking vacuum means, cannot remove the debris generated during the polishing operation. The second type is a central vacuum type, which has a vacuum hose, one end of which is connected to a central vacuum source, and the other end of which is connected to a mounting member. The mounting member communicates with the protective cover of the polisher, thereby generating an attraction force and removing dust generated during the polishing operation. The third type is a self-vacuum type, in which exhaust gas generated by a pneumatic motor is guided to an extraction device in which exhaust gas is generated, and communicates with the extraction device and a protective cover of a polishing machine, thereby collecting debris generated during a polishing operation. leave. Although not clearly disclosed in the track polishing machine of the present invention shown in FIGS. 22 to 31, it is understood that it can be understood only by the description, and among them, the above-mentioned respective features of the central vacuum type and the self-vacuum type Can be introduced.
[0016]
As outlined above, the orbital polisher of the present invention shown in FIGS. 22-31 includes a compressed air motor of the polisher type. Motors of the above-mentioned type make the height of the grinder of the invention considerably lower, so that the stress felt by the operator can be reduced. However, as can be seen from the drawings, in FIGS. 22 to 31, the spacing plastic pillars fixing the pad and the outer casing can also be used for various types of motors which do not correspond to other low heights.
[0017]
FIG. 1, FIG. 1A, FIG. 2, FIG. 2A, FIG. 2B and FIG. 3 show a central vacuum type random orbital polisher 10 in which a flexible vacuum hose 11 is provided with a dust discharge pipe 12 and a polishing disc 14. It is connected between the surrounding protective cover 13. However, the only discrimination between the central vacuum type random orbital polisher 10 and the non-vacuum type is that the latter does not have a waste pipe 12 or a flexible hose 11. 1A is a cross-sectional view taken along the line 1A-1A in FIG. 1, and discloses a basic structure shared by three types of track polishing machines. Hereinafter, the polishing machine in each of the above drawings will be described, and its purpose is to describe the compressed air motor used in the orbital polishing machine of the present invention in FIG. 22 and subsequent drawings, This type of motor is one important factor that gives the track grinder of the present invention a low height.
[0018]
The random orbiting grinder shown in FIGS. 1 to 3 has, in its basic structure, an outer casing chuck 15 made of a rubber material, which is attached to a plastic outer casing 17 and locally includes the outer casing chuck 15. The ribs 19, 20, 21 extending around the outer casing 17 come into contact with each other and are thereby fixed to the outer casing 17. The outer casing 17 has a lower portion 22 with a skirt portion 23 formed at the end thereof, the skirt portion 23 having an annular rib 24 ′, and a flexible plastic protective cover 13 engaged therewith. Are attached to the annular ribs 24 '.
[0019]
A pneumatic motor is arranged in the outer casing 17 and has an air cylinder 24, and a rotor 25 is mounted in the air cylinder 24, and the rotor 25 is engaged with the shaft member 27 by a positioning key 28. Both ends of the shaft member 27 are held by bearings 29 and 30, respectively (see FIG. 1A), and are locked and positioned via a locking ring 31. The air cylinder 24 is a part of an air cylinder assembly, which has a top plate 32 and a bottom plate 33, and a bearing 29 is mounted in an annular portion 63 of the top plate 32, and the bearing 30 Is mounted in the annular portion 69 of the bottom plate 33. The top plate 32 and the bottom plate 33 have flat surfaces 34 and 35, respectively, and these two flat surfaces 34 and 35 are attached to both ends of the air cylinder 24 so that a required sealing at a portion adjacent to the air cylinder 24 is achieved. Provides functionality. The upper end of the positioning pin 37 is housed in the hole 39 of the outer casing 17, and the positioning pin 37 passes through the circular hole 40 of the upper plate 32 and the hole 41 of the air cylinder 24 to reach the hole 42 of the bottom plate 33. Then, the upper plate 32 and the bottom plate 33 are aligned with the air cylinder 24. The outer peripheral edges 43 and 44 of the upper plate 32 and the bottom plate 33 are respectively closely fitted to the inner surface 45 of the outer casing 17. A thread sealing ring 47 is screwed into the thread portion 49 of the outer casing 17, and the upper surface 50 of the upper plate 32 is attached to an adjacent surface of the outer casing 17. A slot is formed in the sealing ring 47, in which an O-ring 51 is housed and is closely attached to the lower surface 52 of the bottom plate 33. The rotor shaft 27 includes an eccentric casing 57 formed integrally, and a bearing 55 is disposed therein, and the bearing 55 is locked and positioned by a locking ring 56 of a contact film type spring washer 58. The casing 57 has an eccentric shape, on which two balancing weight members 54, 57 'are arranged. The short shaft 53 is crimped in the bearing 55, and a nut 59 is formed at the outer end of the short shaft 53. Therefore, the rotor shaft 27 can be turned, and the eccentric casing 57 can be turned as the shaft member 27 rotates. A certain thread shaft 60 extends upward from the polishing machine 14 and is housed in the short shaft 53.
[0020]
As can be seen from FIGS. 1A and 1F, the compressed air inlet conduit 38 communicates with a hole 134 in the air cylinder 24, and the hole 134 has an upper air cylinder surface 50 (FIG. 1D) and a lower air cylinder surface 35 (FIG. 1A) communicates with an axially extending bore 134 'between the slot 136 (FIG. 1D) in the upper air cylinder surface 50 and a similar slot in the lower air cylinder surface 35 (shown). (Omitted). When the upper plate 32 is in a position after being attached, the slot 136 becomes a conduit and leads to the storage chamber 138 (FIG. 1D) in the air cylinder 24. The bottom plate 33 becomes a similar conduit, the slot of which corresponds to the slot 136 in the lower air cylinder 35. A plurality of blades 136 '(see FIG. 1D) are slidably mounted in radial slots 139' of the plastic rotor 25. Air pressure is introduced into the inner end of each slot 139 ′ via slots 140 ′ (see FIG. 1B) in the surface 64 of the upper plate 32, and the outer end of the blade 136 ′ is connected to the inner surface of the air cylinder 24. Contact. The slot 140 'communicates with the slot 136. The bottom plate 33 (see FIG. 1C) has a slot 141 ′ corresponding to the slot 140 ′ and communicating with a pair of slots 136. Air is exhausted from the air cylinder storage chamber 142 'through a narrow slot 143' (see FIG. 1F) of only a few millimeters in the center of the air cylinder 24. The exhausted air enters the storage chamber 144 ′ between the air cylinder 24 and the outer casing 17 and then enters the exhaust conduit 87 through the hole 142 (see FIGS. 1F and 3).
[0021]
What needs special explanation here is that the pneumatic motor is a conventional type of article, and the structure of the pneumatic motor is lower than that of the existing track grinder having a similar structure in FIG. And has the effect of reducing its weight.
[0022]
The modifications that will be implemented in time are as follows: The upper part 60 of the outer casing 17 is 2.0 mm. In addition, the gap of the portion 61 between the inner surface 62 of the outer casing 17 and the annular portion edge 63 is 0.6 mm. In addition, the thickness of the upper plate 32 between the surface 50 and the surface 64 is 2.5 mm. The thickness of the bottom plate 33 between the surface 35 and the surface 67 becomes 2.5 mm. The axial length of the air cylinder 24 becomes 20 mm. In addition, the gap 61 is 0.5 mm. Also, the nut 59 has a thickness of 4.0 mm. The height of the eccentric casing 57 becomes 21.4 mm. All of the above dimensions cause the pneumatic motor to form a height of 82.92 mm from the upper end of the outer casing 17 to the surface 70 of the pad 14 at the vertical centerline 71. In contrast, the lowest height already known in existing prior art structures is approximately 89 mm, which, by comparison, reflects a difference of 6.08 mm or 7%. In addition, the steel upper plate 32 and the bottom plate 33 are replaced with aluminum material, and the outer surface 72 of the air cylinder 24 is formed to have a thickness of 2 mm, the upper plate has no upper flange corresponding to the flange 73, and the aluminum bottom plate 33 and the nut are replaced. 59 is thinner, reducing the weight of the track polisher shown in FIG. 5 to 0.68 kg, compared to a similar prior art track polisher weighing 0.82 kg, which is approximately 0.5 kg. Reflects a difference of 14 kg or almost 17%. As described above, the weight of the track polishing machine is reduced, and the operator can easily operate the track polishing machine.
[0023]
As described above, the basic structure of the pneumatic motor is a well-known conventional type, and has a minimum power of 150 watt under a minimum pressure of 0.61 bar. In the case of the pneumatic motor just described, the orbital grinder shown in FIGS. 1 to 21 can have a much lower height and a fairly light weight, since it has the features of the preceding sections. In addition, the internal structure of the pneumatic motor is similar to the conventional structure.
[0024]
The reduced height of the polishing machine 10 is indicated by the letter A in FIG. Since the overall height of the polishing machine 10 is reduced, the center line of the outlet of the waste discharge pipe is lowered to dimension B, and the center line of the compressed air inlet 80 is lowered to dimension C. As explained above, a decrease in dimensions B and C can also impart an effect on track polishing machine 10 to make it easier to operate.
[0025]
The waste discharge pipe 12 (see FIG. 3) of the polishing machine 10 has a center line 86 and forms an inclination angle a with the horizontal. The debris discharge tube 12 includes a long section 83 and a short section 84, the latter having a center line 88 and having a circular outlet, and attached to a short cylindrical tube 85 integrally formed with the protective cover 13. Can be A long section 83 of the waste discharge pipe is located just below the motor exhaust pipe inlet mounting member 87. A pneumatic motor exhaust conduit 87 is integrally formed in the outer casing 17 and the casing portion 90. The compressed air intake conduit 80 (see FIGS. 1 and 2A) is housed in the casing 90. The waste discharge pipe 12 has legs 94 and 95 that are integrally formed, and an intervening portion 93 extends between them. Bolts 91 pass through the horizontal portion 92 of the casing 90 and the intervening portion 93, thereby connecting the waste pipe 12 and the casing 90 together. Therefore, the waste discharge pipe 12 is gently held by the casing 90 having the short pipe 85, the pneumatic motor exhaust pipe 87, and the compressed air intake pipe 80.
[0026]
As described briefly above, since the outer end 89 of the waste discharge pipe 12 extends obliquely upward (see FIG. 3), the adjacent part of the flexible vacuum hose 11 also extends obliquely upward. The position at which the flexible vacuum hose 11 is downwardly suspended is farther away from the outer end 89 of the waste pipe. When the latter is in a horizontal state, the hanging position of the flexible vacuum hose 11 is close. In such a case, it is possible to prevent the flexible hose from generating a frictional resistance force close to the work. In addition, as shown in FIG. 2, since the flexible hose 11 is directly stored in the waste discharge pipe 12, a mounting member used outside the waste discharge pipe of the related art can be eliminated, and the discharge can be performed. The outermost portion 81 of the tube 12 can be located at a position away from the vertical center line 71 of the polishing machine by about E (see FIG. 15). As can be seen from the above description, the shorter the distance E is, the shorter the lever arm that becomes inclined of the polishing machine 10 can be. Therefore, regardless of the weight of the outer end portion 81 of the waste discharge tube 12, The shorter the arm E, the lower the generated obliquely inclined force, and the lower the force required for the operator to overcome this inclined force.
[0027]
This type of compressed air intake structure can tolerate a slow change in the pressure supplied to the pneumatic motor. In this direction, for example, the compressed air inlet 80 includes a valve 100 (see FIG. 1A), and is pressed toward the base 101 by the spring 102. An outer end 103 of the spring 102 is attached to a distal end of a hollow compressed air mounting member 104 screwed to the casing 90. A mounting member 104 (see FIGS. 1, 2, 4, and 5) houses one end of a compressed air hose 106 by a conventional connection method. Hose 106 is connected to vacuum hose 11 by suspension ring 108. In order to open the valve 100 from the position shown in FIGS. 1A and 7 to the position shown in FIG. 11, a bush 109 integrally formed with the casing portion 90 is pivotally connected at a portion 107 with a lever 105. Since the extension 111 of the valve 100 is housed in the hole 112 at the lower end of the positioning pin 110, when the lever 105 is pressed downward, the pressure of the spring 102 is resisted and the positioning pin 110 is shown in FIG. When the lever 105 is loosened by pressing downward from the position to the position shown in FIG. 11, the spring 102 causes the valve 100 to return to the position shown in FIG. 7, and the positioning pin 110 is also connected to the valve extension portion 111 in FIG. It is raised to the position shown. The structure of the valve 100 belongs to a conventional structure.
[0028]
A certain airflow regulating valve 115 is positioned in the hole 117 of the casing 90 (see FIGS. 1A, 7, 11A, and 11B), and is locked and positioned by a locking ring 119 (see FIG. 7). The hole 117 has a wall 118. A slot 122 is formed in the base 126 of the valve 121, in which an O-ring 120 (see FIG. 11A) is disposed, thereby providing a sealing function and a frictional positioning function, and allowing the valve 115 to be adjusted in any of the holes 117. Lock in rear position. The valve 115 has a portion of a cylindrical wall 123 that extends upwardly from the base 126 and has an outer cylindrical surface 124. The valve 121 has a handle 125 formed integrally. The upright wall 123 has a hole 127 and an oblique slot 129 communicating with the hole 127. When the outer cylinder surface 124 and the wall portion 130 of the hole 117 are slidably contacted with each other and the valve 121 is at the fully open position shown in FIG. 8, the hole 127 and the hole 38 of the outer casing 17 communicate with each other, The end of the hole 38 is located on the wall 132 of the pneumatic motor air cylinder 24. An O-ring (see FIG. 1A) is inserted around the periphery of the hole 134 in the wall 132, thereby sealing the outer end of the conduit 38. The above structure is a technique which is well known to those skilled in the art.
[0029]
As described above, when the valve 115 is at the position shown in FIG. 8, the valve 115 is fully opened, and the valve 115 is partially opened in FIG. 9, so that the air flow passes along the oblique slot 129. . The oblique slot 129 limits the degree of opening of the conduit 38. As can be seen from the above description, the more the wall portion 124 moves in the opposite direction, the smaller the communication path to the conduit 38 becomes. FIG. 10 shows that the valve 115 is in the fully closed position. In time, the wall 124 completely closes the conduit 38. In this case, the edge 135 and the shoulder 137 are joined and define a limit for the valve 115 to move in the opposite direction, as shown in FIG. When the edge 139 and the shoulder 140 are joined, the limit of the clockwise movement of the wall 124 is determined, as shown in FIG. The moving range of the valve 115 is 90 degrees from the fully open position to the fully closed position.
[0030]
FIGS. 12, 13 and 14 correspond to FIGS. 8, 9 and 10, respectively, but take a 12-12 cross section above the valve extension 111, and FIGS. The portion passing through the section line of the valve extension portion 111 at 7 is taken.
[0031]
FIG. 3 shows that the motor exhaust casing 87 communicates with the exhaust of the pneumatic motor air cylinder 24 via conduit 142 (see FIG. 3) (FIG. 1A). The casing 90 has a silencer 143 which is positioned in the hole 144 by the positioning member 145, and the exhaust is separated from the casing 90 via the perforated cover 147.
[0032]
FIG. 4, FIG. 5, FIG. 6, and FIG. The internal structure of this polishing machine is the same as the central vacuum type structure disclosed in FIG. 1A. In addition, the type of the polishing machine 14 is also the same, and has an air flow regulating valve 115 of the same type, which is located in the casing 90 ′. The inlet valve 115 is exactly the same as the valve 125 described in the drawings 1A, 8, 9, and 10.
[0033]
The self-vacuum random orbital polisher 150 has a waste discharge pipe 151 and has a predetermined oblique angle a with respect to the horizontal plane (see FIG. 5). The debris discharge pipe 151 has an elongated portion 152, which has a center line 156 (see FIG. 16) and is housed in the elbow 153. The elbow 153 has a center line 158 and is attached to the short pipe 154 of the protective cover 13. The tubular suspension ring part 155 and the part 156 of the waste discharge pipe are formed by integral molding. The motor exhaust unit 159 accommodates the perforated silencer 160. A mounting member 161 passes through the suspension ring portion 155 and is screwed to the motor exhaust casing 159 at a portion 162. The mounting member 161 has a hole 163 and a plurality of holes communicating with the conduit 165 through the plurality of holes 163. The conduit 165 serves as an inlet for the hole 167, and the hole 167, together with the areas 169 and 170 of the slender waste pipe 152, bears the bleeding device 176. What needs to be explained specially here is that the debris discharged from the protective cover 13 enters the flat elongated part 152 of the debris discharge pipe, and a clear curved part is formed near the areas 171 and 169. Since it is not provided, the former is more efficient than the case where a curved portion exists near the conduit 165.
[0034]
In addition to what has been described above, the flexible waste discharge hose 11 is provided in the enlarged portion 172 at the outer end of the waste discharge pipe 151 by a method similar to the method described in the embodiment shown in FIGS. Is stored. The outer end 170 of the air extraction device 176 is fitted to the innermost part (see FIG. 6) of the dust discharge hose 11, so that the entire waste discharge pipe 151 is considerably shortened.
[0035]
What needs to be explained is that the waste pipe 151 has a predetermined inclination a with the horizontal plane, whereas the elbow 153 has a predetermined inclination b with the horizontal plane.
[0036]
What needs to be described with reference to FIG. 16 is the distance E between the center line located at the outer end of the enlarged portion 172 of the waste discharge pipe 151 and the vertical center line 71 of the random orbital polisher 150. In addition to the dirt discharge pipe 151 being formed obliquely, it is also formed to be quite short, so that any downward force at its outer end comes close to the vertical center line 71, and the generated force is reduced by the operator. , Which is smaller than the required opposing force when the distance E is large.
[0037]
The dimensions A to E and a and b shown in FIGS. 15 and 16 are shown below:
Dimension table (unit: mm) for each part of different types of track polishing machines
Dimensions Non-vacuum type Self-vacuum type Central vacuum type
A 82.92 82.92 82.92
B-47.45 40.42
C 58.42 58.42 58.42
D 80.00 80.00 80.00
E-147.28 130.05
Angle a-10 degrees 10 degrees
Angle b-130 degrees 130 degrees.
[0038]
A is the height between the upper end of the polishing machine and the surface of the polishing pad at the vertical center line of the polishing machine.
[0039]
B is the height between the discharge pipe center line at the discharge pipe outlet and the surface of the polishing pad.
[0040]
C is the height between the center line of the compressed air intake pipe and the surface of the polishing pad.
[0041]
D is the horizontal distance between the grinder vertical centerline and the outermost part of the compressed air intake pipe.
[0042]
E is the horizontal distance between the vertical center line of the polisher and the outermost part of the waste pipe.
[0043]
The angle a is the angle between the horizontal or pad surface and the center line of the waste pipe.
[0044]
The angle b is the angle between the center lines of both parts of the waste discharge pipe.
[0045]
In the above table, the dimension E of the central vacuum type polishing machine is 130.05 mm, and the dimension E of the self-powered vacuum type polishing machine is 147.28 mm. However, if the thread connector (see FIG. 3) at the outermost end 89 of the debris discharge tube 12 of the central vacuum grinder reduces the number of threads twice around every 5 mm, the dimension E of 130.05 would be approximately 10 mm. Is reduced to about 120 mm. Otherwise, if the thread end 172 of the self-vacuum grinder reduces the number of threads around two every 5 mm, the dimension E of 147.28 decreases by 10 mm to 137 mm. The dimension E of the central vacuum grinder and the self-powered vacuum grinder can be increased by 10 mm to 140 mm and 157 mm, respectively, but this may cause a small loss in human engineering. However, at the same time taking into account the stretched dimension E and the shortened dimension A, the respective polishers can still achieve more ergonomic results than polishers without such dimensional combinations.
[0046]
As briefly described above, in the case of the existing most advanced prior art polishing machine type shown in FIGS. 1 to 21, its height dimension is approximately 89 mm, but the height of the polishing machine is The height dimension A is 82.92 mm. As can be seen from the foregoing description, the dimensional difference between these two is approximately 7%, with the 82.92 mm dimension being the lowest dimension, and when this minimum dimension is reached, the different parts are still included in the grinder. Market and operation method, and suitable output parameters described above and below can be provided. Also, as can be seen from the above description, when the thickness and height of each part are not reduced more than before, the height A of the polishing machine of the present invention can be increased by a few millimeters. It can therefore be expected that the height dimension A can be increased to 86 mm, and this height is still lowered by 3.5% from 89 mm.
[0047]
In addition, as described above, in the case of the type of the existing most advanced prior art polishing machine, the weight is approximately 0.82 kg, and the weight of the polishing machine of the present invention is 0.68 kg. It is. The difference, 0.14 kg, reduces weight by 17%. As can be seen from the above description, in the case of the grinder of the present invention, the weight can be increased to 0.75 kg, a difference of about 0.07 kg can be generated, or the weight can be reduced by 8.3%. Is also quite noticeable.
[0048]
The angle a shown in the above table is an acute angle whose preferable value is about 10 degrees, but when this angle is the smallest, it can be about 5 degrees, and when it is the maximum, it can be about 30 degrees. The exact acute angle applied by any particular device will depend on the influence of each element, e.g., the length of the body of the motor exhaust system directly above the motor and the outlet of the protective cover and the body of the motor exhaust system. The vertical spacing between them is an example.
[0049]
As described above, the angle b is 130 degrees, but any obtuse angle that does not collide with the acute angle a of the waste discharge pipe can be adopted.
[0050]
Both the non-vacuum type polisher and the central vacuum type polisher 10 use the pneumatic motor of the self-vacuum type polisher 150 with a wattage rate of 150 watts, and are operated by a pressure source providing a pressure of 6.1 bar. A rotation speed of up to 10,000 rotations can be provided.
[0051]
First, it is necessary to explain each dimension, and most preferably, it can be applied to the three types of random track grinding machines described in FIGS. 1 to 21 of the above drawings. Each dimension is most preferably capable of being woven into an orbital polisher as shown in FIG. 22 and subsequent figures. However, the angles and dimensions of the connection heads of the hoses shown in the above table and other dimensions are optional. It can be understood that the orbit grinder shown in FIG. 22 and the continuation thereof can freely adopt another type of motor for the connection method between the outer casing and the pad, and the pneumatic motor adopting the connection method described above. The motor does not need to be limited to the above specification.
[0052]
According to another aspect of the invention, the bearing 276 (see FIG. 23) is similar to the bearing 55 (see FIGS. 1A and 17), in which compressed air is supplied to that location and the one-way valve Is provided to prevent foreign matter from entering the eccentric casing 57 that accommodates the bearing 276. This can be clearly seen from FIGS. 1A to 1D and 1F. Compressed air is introduced from the hole 38 (see FIGS. 1A and 1F) via the hole 134 into the hole 134 ′. Compressed air later enters slots 136 in air cylinder surface 50 (see FIG. 1D) and corresponding slots in air cylinder surface 35 (not shown). Compressed air then passes through slot 140 ′ (see FIG. 1B) in surface 64 of plate 32 above slot 136 and through slot 141 ′ (see FIG. 1C) via a corresponding slot in slot 136 (not shown). As described above, compressed air diffusing from slots 140 'and 141' enters radial slot 139 'of rotor 25 (see FIG. 1D) and urges blade 136' to move outward.
[0053]
In the pneumatic motor including the air cylinder 24, the rotor 25, the upper plate 32, and the bottom plate 33, since a work gap exists between the components, compressed air diffused from the slots 140 'and 141' is removed from the upper plate 32. It passes between the rotor 25 and also passes between the bottom plate 33 and the rotor 25. The compressed air later enters the rotor key slot 180 (see FIGS. 1A, 1D, 1F) and then passes around the positioning key 181 in the key slot 182 of the shaft member 7.
[0054]
According to one embodiment of the present invention, the shaft member 27 of the pneumatic motor is modified to a shaft member 27 'shown in FIGS. Regarding this correction, a horizontal hole 183 is drilled in the shaft member 27 ′, and a hole 184 communicating with the horizontal hole 183 is formed in a lower portion of the shaft member 27 ′, and a hole is formed in the lower end of the hole 184. The corresponding hole 185 is formed by drilling. The corresponding hole 185 communicates with the storage chamber 187 that stores the bearing 55 in the eccentric casing 57. As can be seen from FIGS. 1A and 17, a small space 189 exists above the uppermost bearing 55 in the storage room 187. A filter piece 188 manufactured by polyester adhesive spinning and a duck-mouth one-way valve 190 are arranged in the corresponding hole 185, and are pressed into the corresponding hole 185 by a locking bush 191 and the valve 190 is enlarged. It abuts on the annular portion 186 and locks the valve 190 and the filter piece 188 in the hole 185. A filter piece 188 filters compressed air passing through the duck-mouth one-way valve 190. As shown in FIG. 18, a spacing block 192 is provided between the bearings 55, and a spacing block 193 is interposed between the lower bearing 55 and the film-type spring washer 58. The spacing masses 192 and 193 are annular thin metal pieces, which are attached to the short shaft 53, and whose outer diameter is brought close to the inner rolling path of the bearing 55, but does not hinder the space between the inner and outer rolling paths. The upper spacing mass 192 isolates the bearing 55 so that it does not contact the outer rolling path of the bearing, and the lower spacing mass 193 also performs the labyrinth-type sealing effect, the motor stops and the air faces upward and the lower bearing 55 When it is inhaled, a curved path is formed with its back facing the lower bearing 55. Therefore, the above structure allows the airflow to flow into the storage chamber 187, passes through the bearing 55, and then passes through the annular space 196 between the film-type spring washer 58 and the portion 195 of the short axis or the center axis 53, and passes through the polishing machine 14. Invades the space above Since this pressure is higher than the pressure outside the eccentric casing 57, it is possible to prevent abrasive chips and other foreign matter from entering the bearing 55 in the storage chamber 187 from the area above the pad 14. Since the duck mouth valve 190 is a one-way valve, if the function possessed by the pneumatic motor compresses the air with the air pump and does not flow into the pneumatic motor, the air in the storage chamber 187 is sucked back into the hole 184. Therefore, the air containing the foreign matter can be prevented from being sucked into the storage chamber 187.
[0055]
FIG. 19 shows another embodiment of the present invention. Among them, the same components as those shown in FIG. 1A are denoted by the same reference numerals, and represent the same components. The shaft member 27 of the motor in FIG. 19 has already been modified, of which a conduit 200 is formed, which extends from the upper end of the shaft member 27 into the corresponding hole 201. The hole 201 communicates with the space 189 in the eccentric casing storage chamber 187. The duck valve 202 is located in the corresponding hole 201 and is locked and positioned by the bush 203 which is press-fitted, and is similar to the embodiment of FIGS. 17 and 18, and the filter piece 204 and the filter piece 188 are the same. And is located above the duck valve 202 in the corresponding hole 201.
[0056]
The hole 200 receives air from the gap space 61. In this regard, there is a leakage gap between the shaft member 27 and the upper plate 32, air cools the upper bearing 29 through the upper bearing 29, and then enters the clearance space 61, and the hole 200 After entering the upper end, it passes to the filter piece 204 and the duck valve 202. The mode of action of the air diffused from the duck valve 202 is the same as that of the duck valve 190 described with reference to FIGS.
[0057]
It should be noted that in the embodiment of FIGS. 17, 18 and 19, the only modification is the existing shaft of the random orbital tool, and the air cylinder 24 for swiveling the rotor 25 inside has any conduit. Does not require
[0058]
As another method of guiding and introducing air into the hole 200 shown in FIG. 19, a small hole (not shown) is drilled in the upper plate 32, and compressed air is supplied to the small hole, the bearing 29 (see FIG. 1A) and the space. 61 and into the conduit or hole 200. The holes receive air from the conduit 140 ′ (see FIG. 1B) or the gap between the plane 34 of the top plate 32 and the cylinder 24. In addition, the small hole in the upper plate 32 does not need to be electrically connected to the bearing 29, and is provided at a position communicating with the gap space 61. The small hole passes through the gap between the plane 34 of the upper plate 32 and the cylinder 24, and 32 through the annular portion 63 (see FIG. 1B). In addition, since the leak gap passes through the gap space 61 at the outer peripheral edge 43 of the upper plate 32, the hole 200 can acquire compressed air.
[0059]
FIG. 20 shows another type of method for providing compressed air to the bearing storage chamber 187. In this method, a hole-shaped conduit 211 is formed outside the portion where the shaft member 27 and the bearing 30 are arranged in parallel, and a hole 212 that is aligned with the conduit 211 is formed by drilling, and the storage chamber 187 is passed through the upper end of the casing 57. To enter. The open side of the hole 211 is shielded by the rolling path in the adjacent bearing 30. Therefore, the compressed air can pass through the clearance space 213 and enter the bearing storage chamber 187. The gap space 213 receives compressed air via the gap between the lower surface of the rotor 25 and the flat upper surface of the bottom plate 33 and the key slot 80. In this embodiment, the compressed air does not pass through any duck valve, filter piece, or the like.
[0060]
FIG. 21 shows another method of guiding the compressed air to the storage room 187. Among them, the oblique conduit, the oblique hole 214 and the like are formed by drilling, and the shaft member 27 and the bearing 30 are passed through in parallel. 17 to 19, which communicate with the conduit 214, the filter piece, and the corresponding hole (not numbered) that covers the duck valve, thereby forming the gap space 213 and the small space in the storage chamber 187. The space 189 is communicated with the other via a filter piece and a duck valve.
[0061]
As can be understood from the above description, the passage of the above-mentioned compressed air through the different gaps is considered to pass through the conduits in the casing, and the compressed air is introduced into the bearing storage chamber 187 via these conduits. Is done.
[0062]
22 to 31 show an improved orbital polisher 220 of the present invention. An orbital polisher 220 is similar to the general type shown in FIG. 4, i.e., a non-vacuum polisher, which removes polishing debris generated during polishing by a vacuum that is not associated with any body. However, what is acceptable is that the grinder of the present invention can be applied to the other types of articles mentioned above, that is, it may be a central vacuum type, which has a vacuum hose having one end connected to a central vacuum source. Alternatively, it may be a self-vacuum type, has a bleeding device communicating with the protective cover, can form an exhaust coupling structure with the pneumatic motor, and can take out heavy debris generated during the polishing period.
[0063]
The orbital grinder 220 has an upper casing combination section 221, which includes an integrally formed inlet conduit 222. A lever 223 is pivotally mounted on the positioning pin 224 and acts in the manner described above with reference to FIG. 11 to control the amount of airflow transported to the compressed air motor 225. The shaft member 227, the eccentric casing 229, and the balancing weight members 230 and 231 have different contours, respectively, and are completely the same as the other aspects of the compressed air motor 225 as shown in FIGS. 1A to 1F. An outer casing chuck 232 made of a rubber material is attached to the upper casing combination section 221.
[0064]
A plurality of screws 235 pass through openings 237 in the pad 233 and openings 239 in the pad sheet 234, and are housed in a nut 240 integrally formed in the base or lower rod member 241 of the column unit 242. It is fixed to the pad sheet 234 (see FIG. 25). Each pillar unit 242 has a plurality of plastic pillars 243 which are integrally formed in a row and are spaced apart from each other. The plastic pillar 243 is integrally formed with the upper rod member 244. Each upper rod member 244 has a plurality of molded nuts 245. Although the columns 243 of each row shown in the figure are arranged so as to be in series, these columns may be arranged so that they intersect or offset. The columns 243 as a whole have a circular cross-section, the dimensions of which are as shown in FIG. 29A, of which the smallest dimension is located at each intermediate point, which is the most flexible section of each column. It is a part having. In other words, the pillars generally expand outwardly from their midpoint in a trumpet shape. It can be appreciated that the columns 243 can be formed in other cross-sectional shapes, for example, formed in a cylindrical shape, and these column shapes can produce an effect, but are shown in certain shapes in the present invention. It is not homologous to the mode of action. It can be appreciated that the minimum cross-sectional dimension of each column need not be substantially at the midpoint, but can be anywhere between its ends. Alternatively, it will be appreciated that each column may have one or more reduced cross sections. FIG. 29A shows a preferred shape and size of the pillar 243, the unit is millimeter, and the height dimension of the pillar unit 242 is shown.
[0065]
At a specific level of each pillar unit 242, its base 241 is pre-filled with a metal plate 247 (see FIGS. 29 and 30). A plurality of holes 249 are formed in the metal plate 247 to allow the molded plastic base 241 to pass therethrough. Therefore, the metal plate 247 strengthens the base 241. In addition, the nut 240 is not only formed in the base 241 but also fitted into the metal plate 247. As such, each base 241 is substantially reinforced plastic and provides a fairly high hardness.
[0066]
Each upper rod member 244 has a metal plate 250 and is fully confined within the upper rod member. The metal plate 250 has a plurality of holes 251, similar to the holes 249 of the lower rod member 241, through which a molded plastic upper plate 242 passes. As described above, nuts 245 are molded into each upper rod member 244 and maintain an adjacent relationship with perforated metal plate 250.
[0067]
The plastic of the post assembly 241 is molded polyester and belongs to the "high performance" level and can be purchased from DuPont Engineering Polymers Company, its trademark is HYTREL and its identification number is 5546. This type of plastic provides good longitudinal strength and good lateral flexibility, as well as good orbital mobility for the pad 233 secured to the lower rod member 241 of the column unit 242. Can be provided, and the plastic post 243 provides good longitudinal strength. Before mounting, the rod members 241 and 244 have an outer longitudinal dimension of 27.85 mm (see FIG. 29A). It is understood that other applicable plastic materials can be used for the pillar assembly.
[0068]
Screws 254 pass through suitable holes 255 in casing combination section 253 and are threaded into nuts 245, thereby securing post unit 242 to casing combination section 253. The upper rod member 244 of the column unit 242 is mounted in the concave tank 257 of the casing combination section 253.
[0069]
The casing combination section 253 is fixed to the upper casing combination section 221 in the following manner. The casing combination section 221 is exactly the same as the casing combination section 22 shown in FIGS. 2 and 1A. To this end, the casing combination section 221 has an annular slot 259 (see FIG. 23) in which the flange 260 of the lower casing combination section 253 is housed. The flange 261 of the upper casing combination section 221 is housed in the slot 262 of the lower casing combination section 253. The flange 261 and the slot 262 are in a complementary blending relationship. The flange 261 has a cutout for receiving the flange structures 263, 264 of the lower casing combination section 253. The action of the flange structures 263, 264 is like a positioning key, and can prevent relative rotation between the upper casing combination section 221 and the lower casing combination section 253. Any applicable connection means between the upper casing combination section 221 and the lower casing combination section 253 can be employed.
[0070]
The lower casing combination section 253 is tightly connected to each other by nuts and bolts, and is tightly fixed to the upper casing combination section 221. In this regard, the bolt 265 penetrates the hole 267 in the lower casing combination section 253, and is then screwed and positioned by the nut 269, so that the lower casing combination section 253 is opposed end-to-end along the joining gap 270. A bonding relationship is exhibited (see FIGS. 22 and 27).
[0071]
With the above structure, the upper casing combination section 221 and the lower casing combination section 253 are gently joined. The upper rod member 244 of the column unit 242 and the lower casing combination section 253 are gently joined, and the pad plate 234 is gently joined to the lower rod member 241 of the column unit 242. There is a space 271 between the lower edge of the lower casing combination section 253 and the upper surface 272 of the pad plate 234 (see FIG. 28). Therefore, the space between the pad plate 234 and the lower casing combination section 253 is contacted via the column unit 242. As described above, the upper rod member 244 is fixed to the lower casing combination section 253, and the lower rod member 241 of the column unit 242 is fixed to the pad plate 234. As such, the only means of connection that can be created between the lower casing combination section 253 and the pad plate 234 is an extending plastic column 243 between the lower rod member 241 and the upper rod member 244 of the column unit 242.
[0072]
The track polisher has an overall height of 98.33 mm from the upper end of the outer casing chuck 232 to the lower surface of the pad 233 along its vertical centerline. However, it will be understood that this dimension can be varied in other configurations of orbital polishers. In addition, as described above, the column unit 242 does not need to be used with the specific low-height compressed air motor, but can be used with other types of motors.
[0073]
The pad 233 generates an oscillating motion in the following manner. That is, the bearing 276 is housed in the eccentric casing 229, the shaft member 275 is held in the inner rolling path of the bearing 276 by the press-fitting method, the bolt 273 passes through the hole 274 in the pad plate 234, and the shaft member 275 Screwed inside. When the positioning pins 279 (see FIG. 23) are fixed in the holes 281 of the shaft member 275 and pass through the holes 280 of the pad plate 234, and the pad plate 234 is fixed to the shaft member 275 with bolts 273 during the assembly period. To prevent the pad plate 234 from turning. The positioning pin 279 also establishes a track driving connection with the pad during the operation of the polishing machine. Regarding the latter, when the shaft member 282 of the motor rotates, the positioning pin 279, the bolt 273, and the bearing 276 perform an eccentric rotation with respect to the axis of the shaft member 282, and thereby, the pad plate 234 and the pad 233 are orbited. Drive to exercise. The articulation scheme described above is a conventional technique.
[0074]
As shown in FIG. 23, the column 243 has a distorted shape and is not formed in a symmetric shape as shown in FIG. This is because the column 243 becomes distorted when the positioning pin 279 and the bolt 273 fix the pad plate 234 to the shaft member 275. The column 243 shown in FIG. 28 is formed so as to be fully symmetrical, and the position of the column 243 to be provided when the pad plate 234 and the shaft member 275 are connected by the bolt 273 and the positioning pin 279 is shown in the figure. Not.
[0075]
In FIG. 23, a conduit is arranged in the shaft member 282 and guides compressed air to the storage chamber 278 of the eccentric casing 229. The arrangement of this conduit is exactly the same as the structure described in the previous corresponding FIGS. 17-19 and can work in a homologous manner. In addition, the arrangement for guiding the compressed air to the storage chamber 278 of the eccentric casing 229 can be the same as the structure described in the corresponding FIGS. 20 and 21, and the structure described without referring to the drawings. You can do the same as
[0076]
At each of the two opposite ends of the pad plate 234, a prior art resilient chuck 290 is disposed, which can secure the two opposite ends of the abrasive paper laid on the surface of the pad 233.
[0077]
Although the preferred embodiments of the present invention will be described in detail above, it should be understood that the present invention is not limited to those embodiments, and is based on the gist of the claims of the present invention. It goes without saying that other specific expressions should be implemented.
[Brief description of the drawings]
FIG.
FIG. 1A is a partial plan view of a central vacuum type orbital polishing machine, in which a vacuum hose and a compressed air hose connected to the orbital polishing machine are shown. FIG. 1A is taken along the line 1A-1A in FIG. 1B is a cross-sectional view taken along line 1B-1B in FIG. 1A, FIG. 1C is a cross-sectional view taken along line 1C-1C in FIG. 1A, and FIG. 1A is a sectional view taken along the line 1D-1D in FIG. 1A, FIG. 1E is a sectional view taken along the line 1E-1E in FIG. 1A, and FIG. 1F is a sectional view taken along the line 1F-1F in FIG. 1A.
FIG. 2
FIG. 2A is a partial side perspective view of the track polishing machine shown in FIG. 1, and FIG. 2A is a partial cross-sectional view along a line 2A-2A in FIG. 2 and is an explanatory diagram showing a support structure of a waste discharge pipe. FIG. 2B is an explanatory view showing a partially extended portion of the upper end portion of the structure shown in FIG. 2A.
FIG. 3
FIG. 3 is a partial explanatory view taken along line 3-3 in FIG. 1, in which a part is a cross-sectional view and shows a relationship between a protective cover, a waste discharge pipe, and a discharge hose. It is explanatory drawing which shows the relationship between an exhaust pipe and a waste discharge pipe.
FIG. 4
It is a partial plan view of a self-vacuum orbital grinder, and is an explanatory view showing a vacuum hose and a compressed air hose which are connected to each other and connected to the orbital grinder.
FIG. 5
FIG. 5 is a partial side perspective view of the polishing machine shown in FIG. 4.
FIG. 6
FIG. 6 is a partially enlarged cross-sectional view taken along line 6-6 in FIG. 5 and shows the exhaust pipe structure of the motor, and shows the connection between the waste discharge pipe of the extraction device and the waste discharge pipe and the flexible hose. It is explanatory drawing which shows the connection relation between them.
FIG. 7
FIG. 7 is a partially enlarged cross-sectional view taken along line 7-7 in FIG. 4 and is an explanatory view showing an inlet structure of a compressed air valve.
FIG. 8
FIG. 8 is a partial cross-sectional view taken along line 8-8 in FIG. 7 and is an explanatory diagram showing the compressed airflow regulating valve at a fully open position.
FIG. 9
FIG. 9 is an explanatory view similar to FIG. 8, showing the compressed airflow adjusting valve in a partially opened position.
FIG. 10
FIG. 9 is an explanatory view similar to FIG. 8, showing the compressed airflow regulating valve in a totally closed position.
FIG. 11
FIG. 11 is a partially enlarged cross-sectional view similar to FIG. 7, illustrating an intake valve for compressed air in a fully open position, FIG. 11A is an enlarged perspective external view of a compressed air flow control valve, and FIG. FIG. 3 is a side perspective view of a compressed air flow control valve.
FIG.
FIG. 12 is a partial cross-sectional view taken along line 12-12 in FIG. 11, and is an explanatory diagram illustrating a relationship between positions of a compressed air intake valve and an airflow adjustment valve when the airflow adjustment valve is at a fully open position.
FIG. 13
FIG. 13 is an explanatory view similar to FIG. 12, showing a relationship when the airflow adjustment valve is at a partially opened position.
FIG. 14
FIG. 13 is an explanatory view similar to FIG. 12, showing a case where the airflow regulating valve is in a fully closed position.
FIG.
It is a side perspective view of a central vacuum type orbit grinder, and is an explanatory view showing each dimension considered when ergonomics is determined.
FIG.
It is a side perspective view of a self-vacuum orbit type grinding machine, and is an explanatory view showing each size considered when deciding ergonomics.
FIG.
FIG. 17B is a cross-sectional view taken along the line 17-17 in FIG. 1F and is an explanatory view showing a modification to the rotor shaft member that can increase the pressure on the bearing in the eccentric casing.
FIG.
FIG. 18 is an exploded view showing the rotor shaft and the related structure shown in FIG. 17.
FIG.
FIG. 1B is an explanatory view showing a variation of FIG. 1A and showing another embodiment for guiding compressed air to a bearing in an eccentric casing.
FIG.
FIG. 20 is an explanatory view similar to FIG. 19, showing a structure of a bearing having a hole-shaped conduit in a rotor shaft member and guiding compressed air into an eccentric casing.
FIG. 21
FIG. 20 is an explanatory view showing another embodiment of the conduit similar to FIG. 19 and including a diagonal conduit or a diagonal hole in a rotor shaft member, and showing a structure of a bearing for guiding compressed air into an eccentric casing.
FIG.
FIG. 2 is an external perspective view of the improved track polishing machine of the present invention, illustrating a situation having a unique column mounting unit between its outer casing and a pad.
FIG. 23
FIG. 23 is a sectional view taken along the line 23-23 in FIG. 22.
FIG. 24
FIG. 24 is a sectional view taken along lines 24-24 in FIG. 23.
FIG. 25
FIG. 25 is an exploded view showing the track polishing machine shown in FIGS. 22-24.
FIG. 26
FIG. 26 is a partially enlarged exploded view of FIG. 25, illustrating a column unit that connects a lower casing combination section, a pad, and a casing combination section.
FIG. 27
It is explanatory drawing which shows the state after assembling of a pillar unit, and a lower casing combination section.
FIG. 28
FIG. 28 is a cross-sectional view of FIG. 27 taken along the line 28-28.
FIG. 29
FIG. 29A is a cross-sectional view of the column unit taken along line 29-29 in FIG. 26, and FIG. 29A is an explanatory diagram showing a preferred structure of the column of the column unit.
FIG. 30
FIG. 30 is a cross-sectional view of FIG. 29 taken along the line 30-30.
FIG. 31
FIG. 31 is a cross-sectional view of FIG. 29 taken along the line 31-31.
[Explanation of symbols]
10 Central vacuum type random track polishing machine
11 Flexible vacuum hose
12 Waste discharge pipe
13 Protective cover
14 Polishing machine
15 External casing chuck
17 outer casing
19 rib
20 ribs
21 rib
22 Lower part of outer casing
23 Skirt
24 air cylinder
24 'annular rib
25 rotor
27 Shaft member
28 Positioning key
29 bearing
30 bearing
31 Lock ring
32 Upper plate
33 bottom plate
34 plane
35 flat surface (lower cylinder surface)
37 Positioning pin
38 Compressed air intake conduit (hole)
39 holes
40 circular hole
41 hole
42 holes
43 Upper plate outer edge
44 Outer edge of bottom plate
45 Inner surface of outer casing
47 Thread Seal Ring
49 External casing thread
50 Upper plate upper surface (upper cylinder surface)
51 O-ring
52 Bottom plate bottom surface
53 short axis
54 Balancing weight member
55 bearing
56 Lock Ring
57 Eccentric casing
57 'balancing weight member
58 Film Type Spring Washer
59 nut
60 Thread axis / upper end of outer casing
61 Clearance space
62 Outer casing inner surface
63 Annular part
64 surfaces
67 surface
69 Annular part
70 Pad surface
71 Vertical center line of polishing machine
72 cylinder outer surface
73 flange
80 Compressed air intake conduit
81 Outer end of waste discharge pipe
83 Long section for waste disposal
84 Debris discharge pipe short section
85 cylindrical short pipe
86 center line
87 Exhaust pipe / Motor exhaust pipe entrance mounting member
88 center line
89 Outside end of waste discharge pipe
90 casing
90 'casing
91 volts
92 horizontal part
93 Intervening part
94 legs
95 legs
100 valves
101 base
102 spring
103 Spring outer end
104 Hollow compressed air mounting member
105 lever
106 Compressed air hose
107 pivot point
108 Hanging ring
109 Bush
110 Positioning pin
111 Valve extension
112 hole
115 Airflow control valve
117 hole
118 Wall
119 Lock ring
120 O-ring
121 valve
122 slots
123 Partially cylindrical wall
124 outer cylindrical surface
125 handle
126 base
127 holes
129 diagonal slot
130 Wall
132 wall
133 O-ring
134 holes
134 'hole
135 edge
136 slots
136 'blade
137 shoulder
138 storage room
139 Edge
139 'radial slot
140 shoulder
140 'slot
141 'slot
142 hole (conduit)
142 'storage room
143 Silencer
143 'narrow slot
144 holes
144 'storage room
145 mounting member
147 Perforated cover
150 Self-vacuum random orbital polishing machine
151 waste discharge pipe
152 Waste discharge tube slender part
153 elbow
154 short tube
155 Tubular suspension ring
156 center line
158 center line
159 Motor exhaust unit
160 perforated silencer
161 Mounting member
162 screwed part
163 hole
164 holes
165 conduit
167 hole
169 area
170 areas
171 area
172 Enlargement
176 Bleed device
180 rotor key slot
181 Positioning key
182 key slot
183 hole
184 holes
185 corresponding hole
186 Enlarged annular part
187 storage room
188 filtration piece
189 Small space
190 Duck mouth one-way valve
191 Locking bush
192 spacing chunks
193 interval lump
195 sites
196 Annular space
200 holes
201 corresponding hole
202 Duck mouth valve
203 Bush
204 filtration pieces
211 slots
212 hole
213 Clearance space
214 Oblique conduit / oblique hole
220 Improved track grinding machine
221 Upper casing combination section
222 Inlet conduit
223 lever
224 Positioning pin
225 Compressed air motor
227 Shaft member
229 Eccentric casing
230 Balancing weight member
231 Balancing weight member
232 External casing chuck
233 pad
234 pad sheet
235 screw
237 opening
239 opening
240 nut
241 Base / Pole Assembly
242 pillar unit / top plate
243 plastic pillar
244 Upper rod member
245 nut
247 pre-filled metal plate
249 holes
250 metal plate
251 holes
253 Lower casing combination section
254 screws
255 holes
257 concave tank
259 annular slot
260 flange
261 flange
262 slots
263 Flange structure
264 flange structure
265 nut
267 hole
269 nut
270 joint gap
271 space
272 Pad plate upper surface
273 volts
274 holes
275 Shaft member
276 bearing
278 storage room
279 Positioning pin
280 hole
281 hole
282 Motor shaft member
290 elastic chuck

Claims (37)

An outer casing having a predetermined length and a predetermined width, a compressed air motor disposed in the outer casing, a pad base attached to the motor, and a pad base interposed between the outer casing and the pad base; Comprising, apart from each other, first and second elongated column units provided on two opposite sides of the motor,
The separated first and second elongated column units each include spaced plastic columns that are aligned with the first and second rows, respectively, and their extended length is approximately equal to the overall width of the outer casing. A track polishing machine characterized by the following. The lower ends of the spaced plastic posts aligned in a straight line with the first and second rows are close to the pad base, the upper ends are close to the outer casing, and the first and second rows have A first rod member is attached to each of the lower ends of the plastic columns, and a second rod member is attached to each of the upper ends of the first and second rows of plastic columns. The track polishing machine according to 1. 3. The system according to claim 2, further comprising a first connecting member for fixing the pad base to the first rod member and a second connecting member for fixing the outer casing to the second rod member. Orbital polishing machine as described. The orbital polisher according to claim 2, wherein the first and second rod members are formed integrally with spaced plastic columns that are aligned with the first and second rows. The track polishing machine according to claim 2, wherein at least one reduced cross section is formed between both ends of the pillar. The orbital polisher according to claim 5, wherein the pillar has a substantially circular cross section. A shaft disposed in the motor, a rotor mounted on the shaft, a compressed air guide tube located in the motor and guiding compressed air to the rotor, and an eccentric casing mounted on the shaft And a storage chamber in the eccentric casing, and a bearing located in at least one of the eccentric casings,
The pad base is fixed to the eccentric casing, and the lower ends of the spaced plastic pillars aligned in a straight line in the first and second rows are close to the pad base, and the upper ends are connected to the outer casing. Proximate, wherein the first rod member is attached to the lower ends of the first and second rows of plastic columns, and the second rod member is attached to the first and second rows of plastic columns. The track polishing machine according to claim 1, wherein the track polishing machine is attached to an upper end portion of the orbit. 8. The system according to claim 7, further comprising a first connecting member for fixing the pad base to the first rod member, and a second connecting member for fixing the outer casing to the second rod member. Orbital polishing machine according to 1. The orbit grinder according to claim 7, wherein the first and second rod members are aligned with the first and second rows and the spaced plastic columns are integrally formed. . The orbit grinding machine according to claim 9, wherein the pillar has at least one reduced cross section formed between both ends thereof. An outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and two opposite sides of the motor interposed between the outer casing and the pad base. The first and second rows of spaced plastic columns are provided respectively, a shaft body disposed in the motor, a rotor attached to the shaft body, and compressed air located in the motor. A compressed air guide tube for guiding to the rotor, an eccentric casing attached to the shaft, a storage chamber in the eccentric casing, and at least one bearing located in the eccentric casing,
The pad base is fixed to the eccentric casing, and the lower ends of the first and second rows of spaced plastic columns are close to the pad base, and their upper ends are close to the outer casing,
Also, a first rod member located at the lower end between the first and second rows of plastic columns, and a second rod member located at the upper end between the first and second rows of plastic columns, A guide means for guiding compressed air into the storage chamber in the motor; An outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and two opposite sides of the motor interposed between the outer casing and the pad base. The first and second rows of spaced plastic columns are provided respectively, a shaft body disposed in the motor, a rotor attached to the shaft body, and compressed air located in the motor. A compressed air guide tube for guiding to the rotor, an eccentric casing attached to the shaft, a storage chamber in the eccentric casing, and at least one bearing located in the eccentric casing,
The pad base is fixed to the eccentric casing, and the lower ends of the first and second rows of spaced plastic columns are close to the pad base, and their upper ends are close to the outer casing,
Also, a first rod member located at the lower end between the first and second rows of plastic columns, and a second rod member located at the upper end between the first and second rows of plastic columns, An orbit polishing machine further comprising a guide tube in the shaft body, the guide tube being in communication with the compressed air guide tube and the storage chamber and guiding compressed air to the storage chamber. 13. The orbital polisher according to claim 12, wherein a one-way valve is disposed in the guide tube so that air flows only into the storage chamber. The track polishing machine according to claim 13, wherein the guide tube has a filter piece. The inside of the guide tube becomes a hole in the shaft body, a key slot is formed in the rotor, and a key slot hole is formed in the shaft body, and the key slot is formed in the key slot hole. A positioning key to be inserted into the key slot hole is disposed, a gap is formed between the positioning key and the key slot hole, and a lateral hole communicating with the key slot hole is formed in the shaft body, 13. The track polishing machine according to claim 12, wherein the lateral hole communicates with a hole in the shaft body. An outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and two opposite sides of the motor interposed between the outer casing and the pad base. The first and second rows of spaced plastic columns are provided respectively, a shaft body disposed in the motor, a rotor attached to the shaft body, and compressed air located in the motor. A compressed air guide tube for guiding to the rotor, an eccentric casing attached to the shaft, a storage chamber in the eccentric casing, and at least one bearing located in the eccentric casing,
The pad base is fixed to the eccentric casing, and the lower ends of the first and second rows of spaced plastic columns are close to the pad base, and their upper ends are close to the outer casing,
Also, a first rod member located at the lower end between the first and second rows of plastic columns, and a second rod member located at the upper end between the first and second rows of plastic columns, A guide tube that is located in the shaft body, communicates with the compressed air guide tube and the storage chamber, and guides compressed air to the storage chamber;
The inside of the guide tube becomes a hole in the shaft, a key slot is formed in the rotor, and a key slot is formed in the shaft, and the key is inserted in the key slot. A positioning key inserted into the slot is arranged, a gap is formed between the positioning key and the key slot hole, and a horizontal hole communicating with the key slot hole is formed in the shaft. The lateral hole communicates with a hole in the shaft body,
And a pad connected to the eccentric casing, and a surface of the pad base on a side opposite to the eccentric casing,
An orbiting grinder having a vertical centerline in a main body and a height from an upper end of the outer casing to a surface of the pad being 98 mm or less. The orbit polishing machine according to claim 15, wherein a corresponding hole communicating with the storage chamber is formed in the hole, and a one-way valve is disposed in the corresponding hole. The track polishing machine according to claim 17, wherein a filter piece is disposed in the corresponding hole. The orbit polishing machine according to claim 18, wherein the one-way valve is interposed between the filter piece and the storage chamber. The outer casing has an upper plate, has an upper bearing for holding the shaft in the upper plate, has a first gap between the upper plate and the shaft, and A second gap is provided between the body and the outer casing, and a guide tube in the shaft body communicates with the first gap via the upper bearing and the second gap. 13. The track polishing machine according to item 12. An outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and two opposite sides of the motor interposed between the outer casing and the pad base. The first and second rows of spaced plastic columns are provided respectively, a shaft body disposed in the motor, a rotor attached to the shaft body, and compressed air located in the motor. A compressed air guide tube for guiding to the rotor, an eccentric casing attached to the shaft, a storage chamber in the eccentric casing, and at least one bearing located in the eccentric casing,
The pad base is fixed to the eccentric casing, and the lower ends of the first and second rows of spaced plastic columns are close to the pad base, and their upper ends are close to the outer casing,
Also, a first rod member located at the lower end between the first and second rows of plastic columns, and a second rod member located at the upper end between the first and second rows of plastic columns, An upper plate located in the outer casing, an upper bearing that holds the shaft in the upper plate, a first gap between the upper plate and the shaft, the shaft and the outer casing, A guide tube that is located in the shaft body and communicates with the first gap via the upper bearing and the second gap, a pad that is connected to the eccentric casing, and the pad A surface of the base opposite to the eccentric casing,
An orbiting grinder having a vertical centerline in a main body and a height from an upper end of the outer casing to a surface of the pad being 98 mm or less. The guide tube serves as a hole in the shaft body, has a corresponding hole communicating with the storage chamber in the hole, and a one-way valve is disposed in the corresponding hole. Item 13. An orbital polishing machine according to item 12. The orbital polisher according to claim 22, wherein a filter piece is disposed in the corresponding hole. The orbit polishing machine according to claim 23, wherein the one-way valve is interposed between the filter piece and the storage chamber. An outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and two opposite sides of the motor interposed between the outer casing and the pad base. The first and second rows of spaced plastic columns are provided respectively, a shaft body disposed in the motor, a rotor attached to the shaft body, and compressed air located in the motor. A compressed air guide tube for guiding to the rotor, an eccentric casing attached to the shaft, a storage chamber in the eccentric casing, and at least one bearing located in the eccentric casing,
The pad base is fixed to the eccentric casing, and the lower ends of the first and second rows of spaced plastic columns are close to the pad base, and their upper ends are close to the outer casing,
Also, a first rod member located at the lower end between the first and second rows of plastic columns, and a second rod member located at the upper end between the first and second rows of plastic columns, A pad connected to the eccentric casing, and a surface of the pad base opposite to the eccentric casing,
An orbiting grinder having a vertical centerline in a main body and a height from an upper end of the outer casing to a surface of the pad being 98 mm or less. The orbit grinder according to claim 12, wherein the guide tube is a slot outside the shaft body. 27. The track polishing machine according to claim 26, further comprising a second bearing for holding the shaft, wherein the slot is formed adjacent to the second bearing. The orbit polishing machine according to claim 12, wherein the other guide tube is an oblique hole. An outer casing, a compressed air motor disposed in the outer casing, a pad base fixed to the motor, and two opposite sides of the motor interposed between the outer casing and the pad base. The first and second rows of spaced plastic columns are provided respectively, a shaft body disposed in the motor, a rotor attached to the shaft body, and compressed air located in the motor. A compressed air guide tube for guiding to the rotor, an eccentric casing attached to the shaft, a storage chamber in the eccentric casing, and at least one bearing located in the eccentric casing,
The pad base is fixed to the eccentric casing, and the lower ends of the first and second rows of spaced plastic columns are close to the pad base, and their upper ends are close to the outer casing,
Also, a first rod member located at the lower end between the first and second rows of plastic columns, and a second rod member located at the upper end between the first and second rows of plastic columns, Guide means for guiding compressed air located in the motor to the storage chamber,
The first and second rod members are formed by integral molding with spaced plastic columns in which the first and second rows are aligned with the first and second rows, and the columns have at least one reduction between their ends. A track polishing machine characterized in that a cross section is formed. 30. The track polisher according to claim 29, wherein the pillar has a substantially circular cross section. An upper rod member, a lower rod member, and a plurality of spaced columns that are located between the upper rod member and the lower rod member in a row and are aligned with each other, and extend the upper rod member and the lower rod member. A plastic column unit for an orbital polisher, wherein the length is set to be substantially the same as the length of a row of a plurality of spacing columns formed so as to be aligned with the straight line. 32. The plastic column unit of an orbit polishing machine according to claim 31, wherein the spacing columns are formed integrally with the upper rod member and the lower rod member. The plastic column unit of an orbit polishing machine according to claim 32, further comprising a metal plate formed inside the upper rod member and the lower rod member. The plastic column unit of an orbit polishing machine according to claim 33, further comprising a connecting member formed inside the upper rod member and the lower rod member. 32. The pillar of claim 31, further comprising a metal plate formed inside the upper rod member and the lower rod member, wherein at least one reduced cross section is formed between both ends thereof. 33. The plastic column unit of the track polishing machine according to claim 32, wherein: 36. The plastic column unit of the track polishing machine according to claim 35, wherein the spacing columns are formed integrally with the upper rod member and the lower rod member. The plastic column unit of the track grinding machine according to claim 36, further comprising a metal plate formed inside the upper rod member and the lower rod member.