JPH0529809Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a machining machine for masonry that grinds and cuts masonry to form so-called round objects.

[Prior Art] Stones are processed into various shapes and are mainly used as building materials and tombstone materials. A stone grinder is used to process stone into round objects such as cylinders, cylinders, or spheres.

A conventional general grinding machine is shown in Fig. 3. In the figure, one end of the stone S is attached to the main shaft chuck 1 of the grinding machine.
01, and when grinding stones with a total length of 20 cm or more, attach the other end to the center 102 to prevent vibration.
The stone S is rotated by the main shaft 100 while being held by the main shaft 100. Then, while rotating the stone S, the grinding tool 10
3 and cut the stone S into an arbitrary shape.
Japanese Utility Model Application Publication No. 59-160144 discloses a grinding machine almost similar to this.

Another conventional example is disclosed in Japanese Patent Laid-Open No. 59-37036. In this system, a metal cylinder is rotatably supported, and the metal cylinder is simultaneously rotated and ground by the rotational force of a grinder.

[Problems with the Prior Art] However, the conventional stone grinding machine has the following problems.

That is, in the grinding machine described in Japanese Utility Model Application Publication No. 59-160144, both ends of the stone are held by holding members. Therefore, the holding member at the tip becomes an obstacle when grinding the tip of the stone. Therefore, when processing the tip, the stone had to be removed from the machine with the tip unprocessed and finished by hand, which took time and required skill.

Further, the grinding device described in Japanese Patent Application Laid-Open No. 59-37036 is designed specifically for surface grinding of metal cylinders, and therefore cannot be used for machining round objects such as stone. In addition, since the grinder applies rotational force to the metal tube, it is necessary to always bring the edge of the grinder into contact with the surface of the metal tube at a certain angle.
Furthermore, the angle of the grinder is fixed in one direction, since the metal tube will rotate in the opposite direction if the opposite side of the edge of the grinder comes into contact. That is, the grinder is not designed to allow contact from any direction, and cannot be used for processing round objects such as stone.

[Purpose of the present invention] Therefore, the purpose of the present invention is to provide a stone machining machine that is capable of grinding a stone over substantially its entire length, and also allows the tip of the stone to be shaped, for example, into a spherical shape. It is in.

[Configuration of the present invention] The configuration of the present invention taken to solve the above problems and achieve the purpose is as follows. That is, the present invention is a machining machine for masonry, which is driven by a motor and has a main shaft having attachment means at one end, and is removable from the main shaft by the attachment means. a holder that accommodates and fixes the base of the stone on the axis of the main shaft and rotates with the main shaft when mounted on the main shaft; a fixing means provided on the holder for fixing the accommodated stone; It moves along the stone stored in the holding body,
The processing tool has a processing tool provided so that the processing part can come into contact with the stone from any direction, and a tailstock center provided opposite to the main shaft, and when the holder is removed from the attachment means, the A stone machining machine comprising: a tailstock that rotatably holds a stone between a main shaft and the tailstock center;

The structure of the holder may be, for example, a structure in which the outer circumferential surface is rotatably supported by a roller, or other structures may be adopted.

The structure of the fixing means is not particularly limited as long as it can fix the stone inside the holder, for example, it may have a structure with a required number of clamping bolts that are screwed through the peripheral wall and whose inward protrusion length can be adjusted. can give.

The structure of the processing tool is not particularly limited as long as it can apply the grinding part to any location on the stone from any direction and has sufficient overall rigidity. Normally,
A structure is adopted in which a stand that can move along the stone fixed to a support body is equipped with an arm that is pivotally supported so as to be able to rotate vertically and horizontally, and a grinder device is attached to the arm so that its position can be adjusted. Ru.

It is also optional to provide a copying device adjacent to the processing tool to adjust the cut so that a stone workpiece with a constant shape can be produced. In addition, the masonry processing board can be used not only horizontally but also vertically, as will be explained in later examples.

[Example] The present invention will be described in more detail based on an example shown in the drawings.

FIG. 1 is a schematic perspective view of one embodiment, and FIG. 2 is a perspective view of essential parts showing a connection structure between a holding drum body and a main shaft.

In FIG. 1, the stone grinder includes a bed portion 7. As shown in FIG. A frame 8 is provided at the rear of the bed 7, and a drive unit such as a drive motor M1 is housed therein.

The main shaft 2 is pivotally supported on the frame 8. Main shaft 2
is rotated at an arbitrary speed by a continuously variable speed drive motor M1. At the tip of the main shaft 2, a mounting flange 21, which is a mounting tool, is provided. A spindle center 22 is provided protruding from the center of the attachment side of the attachment flange 21 . Adjacent to the spindle center 22, one engaging projection 210 and four bolt holes 211 are provided. The engaging protrusion 210 engages with the end of the stone S when the stone S is directly mounted between the chuck or spindle center 22 and the tailstock center 91 and processed as in the past without using the holding drum body 1 described later. This is to reliably transmit the rotation of the main shaft 2 to the stone S. When processing a stone S using the holding drum body 1, it is fitted into a fitting hole 133 of a shaft plate 13, which will be described later.

A holding drum body 1, which is a holding body, is attached to a mounting flange 21 of the main shaft 2. The holding drum body 1 has a cylindrical shape with a bottom, and the closing side peripheral wall 11 is provided with adjustment windows 12 at three locations in the circumferential direction. The adjustment window 12 is provided so that when inserting and fixing the stone S into the holding drum body 1, the user can easily adjust the position by placing a hand thereon. In the middle of the peripheral wall 11, there are 4 holes arranged at equal intervals in the circumferential direction at two places with an appropriate distance between them.
A total of eight clamping tools 15 are provided.

The clamping tool 15 is constructed by fixing a nut 151 to the outside of a through hole (not shown) provided in the peripheral wall 11, and screwing a bolt 152 onto the nut 151 from the outside.
It has a structure in which a clamping piece 153 is attached to the inner tip of the bolt 152 so that it can swing freely.

A shaft hole 130 is provided in the center of the shaft disk 13 on the closed side of the holding drum body 1. and shaft plate 13
Four fixing bolts 132 are provided protruding from the shaft hole 130 at positions equidistant from the shaft hole 130.

The holding drum body 1 is assembled by inserting the spindle center 22 of the spindle 2 into the shaft hole 130 of the spindle plate 13 and the engaging protrusion 210 into the fitting hole 133, and inserting the fixing bolt 13 into the holding drum body 1.
2 into the bolt hole 211 and tightened and fixed with the nut 134.

The open side of the holding drum body 1 is rotatably held by a holding frame 19 provided on the bed portion 7.
The holding frame 12 has a substantially circular ring plate shape, and slightly protrudes inward from a circular inner diameter portion 190 to support the support roller 1.
91 are provided at three locations. Support roller 19
1 has a protruding length that can be adjusted within a certain range, so that the outer peripheral portion of the holding drum body 1 can be supported in an optimal state.

A lead screw 41 and a feed shaft 42 are provided in the bed portion 7 in parallel with the holding drum body 1 installed.
A grinding tool 4, which is a processing tool, is attached to the lead screw 41 and the feed shaft 42.

The grinding tool 4 includes a movable base portion 43 that can be moved to a predetermined position by a lead screw 41 and a feed shaft 42. A rotation shaft 45 that rotates in the circumferential direction within a certain range is provided on the side of the holding drum body 1 of the movable table portion 43, and an arm 46 is attached to the tip of the rotation shaft 45 so as to be able to adjust its angle. ing. A grinder 47 driven by a motor M2 is attached to the arm 46. The grinder 47 is attached to the arm 46 via a connecting shaft (not shown), and is
As shown, it is designed to be able to rotate in the circumferential direction of the connecting shaft. Further, the grinder 47 has an arm 46
Various known fixing devices (not shown) can be attached to any position of the
It can be fixed by A handle 48 is provided at the tip of the arm 46.

In addition, for convenience when manufacturing a plurality of pieces having the same shape, a part of the arm 46 is provided with an abutting portion 460 that comes into contact with a copying plate 6, which will be described later.
The tracing plate 6 is a stone material S attached to the holding drum body 1.
and the feed shaft 42 in parallel.
The upper part of the copying plate 6 is formed into a predetermined shape and provided with a copying surface 60, and the contact portion 46 of the arm 46
The cutting by the grinder 47 can be adjusted by pressing the arm 46 against the copying surface 60 and stopping the arm 46 at a predetermined angle.

In addition, the code 9 is a tailstock, and the tailstock center 91
It is equipped with The tailstock center 91 is used when machining a stone by holding both ends of the stone as in the past without using the holding drum body 1.

(Operation) The operation of this embodiment will be explained with reference to FIGS. 1 and 2.

The stone material S to be processed is inserted into the holding drum body 1, and the center hole provided in advance is fitted into the spindle center 22. At this time, the holding drum body 1
It is easier to work by inserting your hand through the adjustment window 12 and placing it on the stone S.

Each clamping tool 15 is tightened while supporting the end of the stone S, and adjusted so that the axis line is the same as the axis line of the main shaft 2.

The main shaft 2 is rotated by the drive motor M1 to rotate the stone S fixed to the holding drum body 1.

The grinding tool 4 is moved to a predetermined position, the handle 48 is operated, and the grinder 47 is applied to the stone S from any direction while rotating the stone S to grind it into a predetermined shape. At this time, arm 4
By pressing the contact portion 460 of 6 along the profiling surface 60 and stopping the arm 46 at a predetermined angle, and adjusting the cut by the grinder 47, a stone product with an external shape similar to the shape of the profiling surface 60 can be obtained. It will be done.

Further, since the tip of the stone S is not held by the tailstock center as in the conventional case, it does not get in the way, and the tip can be easily processed while being attached to the machine.

In this embodiment, the bed 7 and frame 8 are made of metal, making the machine relatively light overall. Therefore, although the bed 7 is installed with the frame 8 facing downwards in the figure to make it a horizontal type, it can be installed with the frame 8 facing downwards to make it a vertical type. When making it a dual-purpose type, the load direction changes, so it goes without saying that the main parts are reinforced using known means such as thrust bearings.

Note that by removing the holding drum body 1 and the holding frame 19, the stone S can be attached to the mounting flange 21 of the main shaft 2.
It can be rotatably held by the tailstock center 91 and used as a conventional stone grinder, which is convenient when grinding stone over its entire length.

The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims of the utility model registration.

[Effect of the idea] The present invention has the above configuration and has the following effects.

(a) When attached to the main shaft, the holder accommodates and fixes the base of the stone on the axis of the main shaft, and rotates together with the main shaft. Therefore, regardless of its length, the tip side of the stone is not held by a center or the like, so there is nothing that will get in the way of machining the tip.

Therefore, even when processing the tip into a spherical shape, for example, the stone can be processed easily and efficiently while it is attached to the holder.

(b) The tailstock has a tailstock center located opposite the main shaft, and when the holder is removed from the main shaft, the stone can be rotatably held between the main shaft and the tailstock center. , it can be used in the same way as a conventional stone grinder, and is convenient when grinding stone over its entire length.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of one embodiment, FIG. 2 is a perspective view of main parts showing the connection structure between the holding drum body and the main shaft,
FIG. 3 is a schematic diagram of a conventional stone grinder. A... Stone grinder, M1... Motor, 1...
Holding drum, 2...Main shaft, 21...Mounting flange, 4...Grinding tool, 7...Bed portion, 15...
Clamping tool, 91...Tailstock center, 9...Tailstock.

Claims (1)

[Claims for Utility Model Registration] A machining machine for masonry, which is driven by a motor M1, and includes a main shaft 2 having a mounting means at one end, and a main shaft 2 that is connected to the main shaft by the mounting means. a holder which is removable from the main shaft 2 and accommodates and fixes the base of the stone on the axis of the main shaft 2 when mounted on the main shaft 2 and rotates together with the main shaft 2; a fixing means for fixing the stones; moving along the stones housed in the holding body;
A processing tool is provided so that the processing part can come into contact with the stone from any direction, and a tailstock center 91 is provided facing the main spindle 2, and when the holder is removed from the main spindle, the A tailstock 9 that rotatably holds the stone between the main shaft 2 and the tailstock center 91
A stone machining machine equipped with and.