JP4573237B2 - Machine Tools - Google Patents

Description

  The present invention relates to a machine tool including a head and a cover that moves with the head and covers the periphery of the machine tool.

  A machine tool having a head and a cover for covering the periphery of the machine tool is known. This type of machine tool cover is used to prevent chips generated during machining from entering the machine tool.

  For example, Patent Document 1 discloses a machine tool having a configuration in which a large number of flat plates are connected as covers on both sides of a head. In this machine tool, flat plates are connected to each other in a telescopic manner by a link or the like, and moved along with the head.

  In Patent Document 1, a gate-shaped fixed column having a pair of upper and lower X-axis rails and a pair of left and right Y-axis rails are provided on the fixed column so as to be movable left and right along the X-axis rails. A saddle, an X-axis moving device that moves the saddle along the X-axis rail, and a main shaft between the pair of Y-axis rails, and the pair of upper and lower X-axis rails along the Y-axis rail. A spindle head provided on the saddle so as to be movable up and down, a Y-axis moving device for moving the spindle head along the Y-axis rail, and movement of the saddle along the X-axis rail provided on the left and right sides of the saddle An X-axis shielding device that moves to shield the space between the pair of upper and lower X-axis rails, and moves according to the movement of the spindle head that is provided on both upper and lower sides of the spindle head and moves along the Y-axis rail. Shield the space between the shaft rails Machine tool, characterized by comprising a shaft shielding device is shown.

In this known machine tool, sheet-like covers are provided on both sides of the head, and ends of these covers opposite to the head are connected via a chain.
JP-A-8-25161

  However, in a machine tool configured to connect a large number of flat plates as covers on both sides of the head, if the weight of the flat plate is large, the influence of the flat plate on the moving accuracy of the head becomes large.

  Further, in a machine tool having a configuration in which the ends of the two covers opposite to the heads are connected via a chain, the cover is moved only by the heads, so the influence of the cover on the movement accuracy of the heads cannot be ignored. In particular, it is difficult to use a heavy cover such as stainless steel for this type of machine tool.

  Accordingly, an object of the present invention is to provide a machine tool that can suppress the influence of a cover on a head to a low level.

  Furthermore, an object of the present invention is to provide a machine tool that can prevent adhesion of chips and damage to the cover due to chips using a cover such as stainless steel.

  The solution of the present invention is exemplified by the machine tool according to claims 1 to 5.

  According to the present invention, the influence of the cover on the head can be kept low. Even a relatively heavy cover has little effect on the head.

  If the cover is formed of stainless steel, it is possible to prevent the chips from adhering to the cover and the cover from being damaged by the chips.

  If a pipe is provided between the head and the air cylinder and the cover is held in a bent state by the pipe, the cover can be stably guided. Also, the machine tool space can be reduced by the amount of bending of the cover.

  If the cover is connected to the air cylinder via the chain and the pulley, the cover can be pulled with a simple configuration.

  If the cover is constituted by the first cover and the second cover and each cover is pulled by the air cylinder, the influence of the cover on the head can be further suppressed. In particular, if the configuration is such that the two air cylinders are controlled by the control device, the influence of the cover on the head can be further reduced.

  According to the present invention, the machine tool includes a head and a cover for covering the periphery of the machine tool, the cover moves together with the head, one end of the cover is connected to the head, and the other end of the cover is connected to the air cylinder. It is connected and the cover is held tensioned by the air cylinder in the direction of the air cylinder.

  The cover is preferably made of stainless steel. In this case, the thickness of the cover can be set to 0.3 mm, for example. You may comprise a cover with the material which has another durability.

  A pipe may be provided between the head and the air cylinder so that the cover is bent by the pipe. In this case, the pipe may be configured to be rotatable by holding both ends of the pipe with bearings.

  The cover may be connected to the air cylinder via a chain and a pulley. The chain is preferably composed of two chains, an upper chain and a lower chain, but may be composed of one chain, or may be composed of three or more chains.

  The cover includes a first cover and a second cover, the first cover is connected to one side of the head, the second cover is connected to the other side of the head, and the air cylinder is connected to the first air cylinder. Comprising a second air cylinder, the first air cylinder is connected to the end of the first cover opposite to the head, the second air cylinder is connected to the end of the second cover opposite to the head, The one cover and the second cover may be held in a state of being pulled by the first air cylinder and the second air cylinder, respectively.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic top view showing a preferred embodiment of the present invention. FIG. 2 is an exploded view showing the structure of the machine tool cover and the vicinity of the air cylinder. FIG. 3 is a schematic perspective view of FIG. In FIG. 3, the head, the column, the frame and the like are not shown.

  The machine tool 10 includes a column 12. A column 14 is provided with a head 14. The head 14 is movable along the X-axis direction (lateral direction) indicated by the arrow X, the Y-axis direction (vertical direction), and the Z-axis direction orthogonal to these.

  A plate 16 and a connecting portion 18 are provided around the head 14.

  The plate 16 is composed of a flat plate surrounding the periphery of the head 14 and is movable along the X axis direction and the Y axis direction together with the head 14.

  The connecting portion 18 is composed of a gate-shaped rigid member having the plate 16 movable therein, and is movable in the X-axis direction.

  Covers 20 and 22 are connected to the head 14 via a plate 16 and a connecting portion 18.

  The covers 20 and 22 include a first cover 20 and a second cover 22.

  First, the first cover 20 will be described.

  The first cover 20 is made of a stainless steel rectangular sheet, and is arranged upright in the Y-axis direction.

  One end 20 a of the first cover 20 is configured near one side of the first cover 20 in the Y-axis direction, and is fixed to the connection portion 18. That is, one end 20 a of the first cover 20 is connected to the head 14 via the connection portion 18.

  The other end 20b of the first cover 20 is configured near the other side of the first cover 20 in the Y-axis direction, and is connected to a first chain 24 described later.

  The intermediate portion 20c of the first cover 20 is between the one end 20a and the other end 20b. A first pipe 28 is arranged upright in the Y-axis direction inside the intermediate portion 20c. Both ends of the first pipe 28 are held by the first bearings 32, and are rotatable in the direction of arrow A around the axis in the Y-axis direction corresponding to the movement of the first cover 20. That is, the intermediate portion 20 c of the first cover 20 is held in a state bent by the first pipe 28.

  The first chain 24 is used to hold the other end 20b of the first cover 20 in a state pulled in the direction of arrow C.

  One end of the first chain 24 is connected to the other end 20 b of the first cover 20. The other end of the first chain 24 is connected to the fixed portion 40 of the first cylinder mounting plate 48 via the first pulley 36. The first cylinder mounting plate 48 is attached to the frame 52 of the machine tool 10.

  The first chain 24 includes an upper chain 24a and a lower chain 24b. One end of each of the upper chain 24a and the lower chain 24b is connected to the upper side and the lower side of the other end 20b of the first cover 20, respectively, so that the first cover 20 can be pulled vertically.

  A first pulley 36 and a first air cylinder 44 are provided in the middle of the first chain 24.

  The first pulley 36 includes an upper pulley 36a, a lower pulley 36b, and a proximal pulley 36c.

  The upper pulley 36a is rotatably attached to the upper side of the cylinder mounting plate 48, and holds and guides the upper chain 24a and the lower chain 24b.

  The lower pulley 36b is rotatably mounted directly below the upper pulley 36a, and holds and guides the lower chain 24b.

  The proximal-side pulley 36c is provided in the middle of the upper pulley 36a and the lower pulley 36b, and holds the upper chain 24a and the lower chain 24b. The proximal pulley 36 c can be moved up and down by the air cylinder 44.

  The air cylinder 44 is connected to a control device (not shown) and moves the proximal pulley 36c up and down in the direction of arrow B.

  The second cover 22 will be described. The configuration of the second cover 22 is almost the same as the configuration of the first cover 20.

  The second cover 22 is formed of a stainless steel rectangular sheet, and is arranged upright in the Y-axis direction.

  One end 22 a of the second cover 22 is configured near one side of the second cover 22 in the Y-axis direction, and is fixed to the connection portion 18. That is, one end 22 a of the second cover 22 is connected to the head 14 via the connection portion 18.

  The other end 22b of the second cover 22 is configured near the other side of the first cover 22 in the Y-axis direction, and is connected to a second chain 26 described later.

  The intermediate portion 22c of the second cover 22 is between the one end 22a and the other end 22b. The second pipe 30 is arranged upright in the Y-axis direction inside the intermediate portion 22c. Both ends of the second pipe 30 are held by the second bearings 34, and are rotatable in the direction of arrow A around the axis in the Y-axis direction corresponding to the movement of the second cover 22. That is, the intermediate portion 22 c of the second cover 22 is held in a state bent by the second pipe 30.

  The second chain 26 is used to hold the other end 22b of the second cover 22 in a state pulled in the direction of arrow D.

  One end of the second chain 26 is connected to the other end 22 b of the second cover 22. The other end of the second chain 26 is connected to a fixed portion 42 of the second cylinder mounting plate 50 via a second pulley 38. The second cylinder mounting plate 50 is attached to the frame 52 of the machine tool 10.

  The second chain 26 includes an upper chain 26a and a lower chain 26b. One end of each of the upper chain 26a and the lower chain 26b is connected to the upper side and the lower side of the other end 22b of the second cover 22, respectively, so that the second cover 22 can be pulled vertically.

  A second pulley 38 and a second air cylinder 46 are provided in the middle of the second chain 26.

  The second pulley 38 includes an upper pulley 38a, a lower pulley 38b, and a proximal end pulley 38c.

  The upper pulley 38a is rotatably attached to the upper side of the cylinder mounting plate 50, and holds and guides the upper chain 26a and the lower chain 26b.

  The lower pulley 38b is rotatably mounted directly below the upper pulley 38a, and holds and guides the lower chain 26b.

  The proximal-side pulley 38c is provided in the middle of the upper pulley 38a and the lower pulley 38b, and holds the upper chain 26a and the lower chain 26b. The proximal end side pulley 38 c can be moved up and down by the air cylinder 46.

  The air cylinder 46 is connected to a control device (not shown) and moves the proximal end pulley 38c up and down.

  The operation of the machine tool 10 will be described.

  For example, when the head 14 is moved to the left side toward the machine tool 10, the first cover 20 and the second cover 22 are moved to the left side together with the head 14. At this time, the first air cylinder 44 moves the base end side pulley 36 c downward in accordance with the movement of the head 14. The second air cylinder 46 moves the base end side pulley 38 c upward in accordance with the movement of the head 14. The first chain 24 moves the first cover 20 in a tensioned state. The second chain 26 moves in a state where the second cover is pulled. Since the first cover 20 and the second cover 22 are held in a tensioned state by the first air cylinder 44 and the second air cylinder 46, they are moved smoothly.

  In addition, this invention is not limited to the above-mentioned Example.

  For example, the head and the cover can be connected in various ways. The configuration of the head and chain is arbitrary. The air cylinder can be of various types and arrangements.

1 is a schematic top view showing a preferred embodiment of the present invention. It is an exploded view which shows the structure of the cover of a machine tool, and an air cylinder vicinity. It is a schematic perspective view of FIG. The head, column, frame, etc. are not shown.

Explanation of symbols

10 Machine tool 12 Column 14 Head 16 Plate 18 Connection portion 20, 22 Cover 20a, 22a Cover end 20b, 22b Cover other end 20c, 22c Cover intermediate portion 24, 26 Chain 24a, 26a Upper chain 24b, 26b Lower side Chain 28, 30 Pipe 32, 34 Bearing 36, 38 Pulley 36a, 38a Upper pulley 36b, 38b Lower pulley 36c, 38c Base end pulley 40, 42 Fixing portion 44, 46 Air cylinder 48, 50 Cylinder mounting plate 52 Frame

Claims (2)

In a machine tool having a head and a cover for covering the periphery of the machine tool,
The cover comprises a first cover (20) formed of rectangular stainless steel and a second cover (22) formed of rectangular stainless steel,
A head (14) is disposed between one end of the first cover (20) and one end of the second cover (22). The head (14) and the first cover (20) and The second cover (22) moves,
The first air cylinder (44) is connected to the other of the first cover (20) via the first upper chain (24a), the first lower chain (24b), and the plurality of first pulleys (36a, 36b, 36c). Is connected to the end (20b) opposite to the head (14),
The second air cylinder (46) is connected to the other side of the second cover (22) via the second upper chain (26a), the second lower chain (26b), and the plurality of second pulleys (38a, 38b, 38c). , I.e., the end (22b) opposite the head (14),
The first upper chain (24a) and the second upper chain (26b) are connected to the upper sides of the other ends of the first cover (20) and the second cover (22), respectively.
The first lower chain (24b) and the second lower chain (26b) are connected to the lower side of the other ends of the first cover (20) and the second cover (22), respectively.
Regardless of the position of the head (14), the first cover (20) and the second cover (22) are always connected to the first upper chain (24a) by the first air cylinder (44) and the second air cylinder (46). ), The second upper chain (26a), the first lower chain (24b), and the second lower chain (26b), and are held in a tensioned and tensioned state in a vertical state. Machine Tools. Pipes (32, 34) are provided between the head (14) and the first and second air cylinders (44, 46), and the covers (20, 22) are bent by the pipes (32, 34). The machine tool according to claim 1, wherein the machine tool is guided in a state.

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