JP4069626B2 - Bellows type cover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bellows type cover that covers a moving region of a moving body and its periphery without hindering the movement of the moving body, and relates to a bellows type cover that opens and closes a tool post protruding window of a machine tool cover of a machine tool, for example.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a machine tool such as an automatic lathe, the entire body is covered with a machine body cover to prevent dust from entering the drive mechanism and scattering of cutting oil, and the drive mechanism 31 as shown in FIG. And the processing chamber 32 are partitioned by a partition plate 33.
[0003]
A machine tool 34 shown in the figure is a turret lathe, and a partition plate 33 is formed with a slot-shaped turret shaft window 36 for projecting a turret shaft 35 so as to be laterally movable. The turret shaft 35 cannot use a single large slide shielding plate in order to avoid interference with peripheral components such as the main shaft 37. Therefore, FIGS. 6A and 6B are cross-sectional views and rear views. As shown, the structure is covered with a bellows type cover 38. The bellows type cover 38 is configured such that a plurality of plate members 39A to 39E are sequentially stacked in a shifted state, and these plate members can be slid in the lateral direction as the shift direction. Adjacent and overlapping plate members 39A to 39E are engaged by engaging members 40A to 40D and guide long holes 41A to 41D, respectively, and the slide operations of the plate members 39A to 39E are interlocked. For example, between the plate member 39A and the plate member 39B that overlaps the plate member 39A, the engaging member 40A protruding from the plate member 39A is engaged with a horizontally long guide slot 41A formed in the plate member 39B, and the plate member 39A is on the left side. When the engaging member 40A moves to contact the left end of the guide slot 41A, the plate member 39B is moved to the left side together with the plate member 39A. The same applies to other plate materials. The engaging member 40E protruding from the plate member 39E is engaged with a guide slot 41E formed in the base plate 42 on the front surface thereof, whereby the slide of the plate member 39E is guided.
[0004]
A turret shaft 35 is passed through the plate material 39A, and when the turret is laterally moved from the state shown in FIG. 6B to the left side approaching the main shaft 37, the other plate materials 39B to 39E are placed in the stacking order. Therefore, when the turret shaft 35 is slid sequentially to the left together with the plate material 39A and finally the turret shaft 35 comes closest to the main shaft 37, the turret shaft window 36 is covered with only one plate material 39A as shown in FIG. Become.
[0005]
[Problems to be solved by the invention]
However, in the bellows type cover configured as described above, when the plate members 39A to 39E slide, the engaging members 40A to 40E sequentially collide with the end portions of the guide long holes 41A to 41E. For this reason, a collision sound is generated and becomes a noise, and if machining is in progress, the machining of the workpiece is affected and a streak portion may be generated on the machining surface. Generation of such a streak portion is not preferable in terms of processing quality, particularly in precision processing.
[0006]
An object of the present invention is to provide a simple bellows type cover that eliminates such a problem, has no collision between plate members during an expansion / contraction operation, and can reduce sound and vibration generated during the expansion / contraction operation.
[0007]
[Means for Solving the Problems]
The bellows type cover according to the present invention is configured so that a plurality of plate materials are sequentially stacked in a shifted state in order to cover the moving region of the moving body and its periphery, and these plate materials can be independently slid in the above-described shift directions. An interlocking mechanism for interlocking the sliding operation of each plate material is provided. This interlocking mechanism is a movable interlocking guide in which a plurality of engaging elements provided on each plate material sequentially apart from each other in a direction orthogonal to the sliding direction and a guide path in which these engaging elements are movably engaged are formed. It consists of.
According to this configuration, since the guide path of the interlocking guide is engaged with the engagement element of each plate material, when the bellows type cover expands and contracts, all the plate materials move little by little with the interlocking guide. There is no collision between the two. For this reason, there is no occurrence of a collision sound accompanying expansion and contraction, and the expansion and contraction can be performed gently. In addition, when this bellows type cover is used as a partition cover between the tool rest of the machine tool and the drive mechanism portion, collision due to expansion and contraction does not occur, so that it is possible to avoid deterioration in machining quality due to vibration due to collision. In addition, the interlocking mechanism is configured by an engagement element provided on each plate member and an interlocking guide that engages with the plurality of engagement elements. Therefore, the structure is simple. Since no collision occurs, it is not necessary to provide absorption means for preventing collision noise, and this also simplifies the configuration.
[0008]
In the bellows type cover, the moving body may pass through a plate member at one end of the plurality of plate members. In this case, the engagement element provided on the end plate may be provided on the adjacent plate side in the sliding direction with respect to the moving body. The engaging element may be a pin-shaped member.
When this engagement element is arranged, the arrangement of the moving body is not hindered by the bellows type cover. In addition, it is also effective that the member that links the plate material and the interlocking guide is in the shape of a pin, without hindering the arrangement of the moving body.
[0009]
In the bellows type cover according to each of the configurations of the present invention, the moving body passes through a plate material at one end of the plurality of plates, and the interlocking guide is a rotation fulcrum located on the other end side. It may be supported so as to be freely rotatable around.
When the pivotable interlocking guide is used as described above, each engagement member can be easily restricted to a predetermined position in the plate material sliding direction while allowing the plate material to slide.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 2 is an external perspective view of a machine tool provided with the bellows type cover of this embodiment. In the figure, a machine tool 1 is a lathe, and an upper part thereof is covered with a machine body cover 2. The body cover 2 includes a processing chamber cover portion 3 that covers the processing chamber 6 in which the spindle 9 and the tool rest 10 are disposed, and a drive mechanism cover portion 4 that covers the drive mechanism portion in which the spindle base and the feed base are disposed. The processing chamber 6 and the drive mechanism are partitioned by the partition plate 5. The tool post 10 is composed of a turret. The partition plate 5 is formed with an elongated hole-like moving body projecting window 11 for projecting a moving body composed of a turret shaft so as to be laterally movable. The slide door 8 is a door that closes the opening 3a formed on the front surface of the processing chamber cover portion 3, and is housed in a door pocket 7 formed on the front surface of the drive mechanism cover portion 4 when the opening 3a is opened.
[0011]
On the back side of the partition plate 5, that is, on the drive mechanism side, as shown in FIGS. 1A to 1C in a horizontal sectional view, a rear view, and a longitudinal sectional view, a bellows type that covers the movable body projecting window 11 is used. A cover 12 is provided. The space in the movable body projecting window 11 is a space that serves as a moving area of the movable body 10a composed of a turret shaft, and the bellows type cover 12 covers the inside of the movable body projecting window 11 that serves as the moving area and its periphery. It is as.
The bellows type cover 12 is arranged in a sequentially shifted state, and a plurality of plate members 13A to 13E that are slidable independently in the right and left direction (X direction) as the shift direction, and each of these plate members 13A to 13E. It is comprised with the interlocking mechanism 14 which interlocks the sliding operation | movement.
[0012]
Each of the plate members 13A to 13E is provided on the rear surface of the partition plate 5 and is held by a pair of upper and lower guide members 15 and 15 extending in the left-right direction (X direction), so that each of them can be slid independently in the left-right direction. Has been. Of these plate members 13A to 13E, the plate member 13A at one end has a width that is wider than the other plate members 13B to 13E. The plate member 13A is formed with a round hole-like moving body through hole 16 through which the moving body 10a is inserted, and the moving member through hole 16 is entirely provided with a seal member 17 for sealing between the plate member 13A and the moving body 10a. It is provided around the circumference. The seal member 17 allows the moving body 10a to rotate and move in the axial direction (Z direction).
In addition, although illustration was abbreviate | omitted, the gap filling means which fills the clearance gap between adjacent board | plate material 13A-13E is provided in the one side edge of each board | plate material 13B-13E along the longitudinal direction. For example, as shown in the example of FIG. 6, the gap filling means is attached to the back surface of the plate members 13B to 13E, or a bent piece obtained by bending the edges of the plate members 13B to 13E back so that the cross section is L-shaped. It is made of a metal material such as a gun metal, a rubber material, or a synthetic resin material.
[0013]
The interlocking mechanism 14 includes a plurality of pin-like engaging elements 18A to 18E provided on the respective plate members 13A to 13E, and an interlocking guide 20 having a guide path 19 in which these engaging elements are movably engaged. The The engaging members 18A to 18E of the plate members 13A to 13E are provided so as to protrude from the surfaces of the plate members 13A to 13E facing in the same direction. These engagement elements 18A to 18E are provided sequentially apart in the up and down direction (Y direction) which is a direction orthogonal to the sliding direction (X direction) of the plate members 13A to 13E. The interlocking guide 20 is composed of a rotating arm, and is supported so as to be rotatable around a rotation fulcrum 21 located at one end of the row of plate members 13A to 13E. The rotation fulcrum 21 is composed of, for example, a support shaft. The guide path 19 is a long hole provided in the interlocking guide 20 along the longitudinal direction, and the engaging elements 18A to 18E are fitted into the guide path 19 and engaged. Each engagement element 18A to 18E may have a roller shape instead of a pin shape.
[0014]
The operation of the above configuration will be described. As shown in FIGS. 1A and 1B, when the moving body 10a is at the left end position of the moving body projecting window 11, the interlocking guide 20 is largely inclined to the left side, and the bellows type cover 12 is maximum. It is in the extended state. That is, at this time, the displacement of each of the plate members 13A to 13E is the maximum, and the movable body protruding window 11 is shared and covered by all the plate members 13A to 13E.
[0015]
When the moving body 10a starts to move laterally toward the main shaft 9, the plate member 13A that penetrates the moving body 10a integrally moves laterally, and the engaging member 18A of the plate member 13A slides on the guide path 19 of the interlocking guide 20. The interlocking guide 20 is rotated clockwise. Accordingly, the plate members 13B to 13E of the other engaging members 18B to 18E that engage with the guide path 19 also move laterally in the same direction as the moving body 10a. As the interlocking guide 20 is in the standing posture, the movement amount of each of the plate members 13B to 13E increases.
[0016]
In this way, when the moving body 10a moves laterally to the right end position of the moving body protruding window 11, the interlocking guide 20 rises to a substantially vertical posture as shown in FIGS. 3A and 3B, and the bellows type cover 12 is It will be in the state contracted to the maximum. That is, at this time, the displacement of the plate members 13A to 13E is minimized, and the movable body protruding window 11 is covered with only one plate member 13A.
[0017]
As described above, in the bellows type cover 12, as the interlocking guide 20 rotates, the engaging elements 18A to 18E that engage with the guide path 19 of the interlocking guide 20 move laterally, and the engaging elements 18A to 18E move. Since the provided plate members 13A to 13E are expanded and contracted by lateral movement, there is no collision between the plate members 13A to 13E, and sound generated during the expansion and contraction operation can be reduced. Further, since there is no collision, it is avoided that the tool post 10 is vibrated and a streak portion is generated on the processing surface of the workpiece, and the processing quality is improved. Since no collision occurs, the mechanism for reducing the generated sound can be simplified.
[0018]
Further, in this embodiment, the movable body 10a penetrates the plate material 13A at the left end, and the engaging element 18A provided on the plate material 13A is closer to the adjacent plate material 13B in the sliding direction (X direction) than the movable body 10a. Since it is provided at a certain right end, the configuration of the bellows type cover 12 does not disturb the arrangement of the moving body 10a. Furthermore, it is also effective for the members that link the plate members 13A to 13E and the interlocking guide 20 to be pin-shaped engaging members 18A to 18E without disturbing the arrangement of the moving body 10a.
[0019]
Furthermore, in this embodiment, the end portion of the interlocking guide 20 is supported so as to be rotatable around a rotation fulcrum 21 located on the right end side opposite to the plate member 13A on the left end portion through which the moving body 10a passes. Therefore, each of the engaging members 18A to 18E can be easily restricted to a predetermined position in the lateral direction (X direction) while allowing the sliding of the plate members 13A to 13E.
[0020]
4A and 4B show a horizontal sectional view and a back view of a bellows type cover according to another embodiment. In this embodiment, in the above-described embodiment, the interlocking guide 20 is a rod that is rotatably supported around the rotation fulcrum 21. The interlocking guide 20 has an outer peripheral surface serving as a guide path, and engaging members 22A to 22E made of a sleeve are slidably fitted to the outer peripheral surface. The engaging elements 22A to 22E made of these sleeves are each formed with an attachment piece 23, and are attached to the respective plate members 13A to 13E by connecting tools 24A to 24E so as to be rotatable. Other configurations are the same as those in the above embodiment.
[0021]
Also in the case of this embodiment, as shown in FIGS. 4A and 4B, when the moving body 10a is at the left end position of the moving body protruding window 11, the interlocking guide 20 is inclined sufficiently to the left. The bellows type cover 12 is in the extended state.
When the moving body 10a starts to move laterally toward the main shaft 9 side, the plate material 13A penetrating through the moving body 10a moves sideways integrally, and the sleeve-like engagement element 14A of the plate material 13A is interlocked while sliding the interlocking guide 20. The guide 20 is rotated clockwise. Accordingly, the other sleeve-like engaging elements 22B to 22E fitted to the interlocking guide 20 slide on the interlocking guide 20, so that the plate members 13B to 13E to which the engaging elements 22B to 22E are attached also move. It moves laterally in the same direction as the body 10a.
[0022]
In this way, when the moving body 10a moves laterally to the right end position of the moving body protruding window 11, the interlocking guide 20 rises to a substantially vertical posture and the bellows type cover 12 is contracted to the maximum as shown in FIG. .
[0023]
In the above-described embodiment, an example in which the bellows type cover is used for a lathe has been described. However, the bellows type cover of the present invention can be used for a general machine tool cover, and is not limited to a machine tool. It can be applied to a cover that covers the body movement path and its periphery.
[0024]
【The invention's effect】
The bellows type cover according to the present invention is configured so that a plurality of plate materials are sequentially stacked in a shifted state in order to cover the moving region of the moving body and its periphery, and these plate materials can be independently slid in the above-described shift directions. Provided with an interlocking mechanism for interlocking the sliding operation of each plate member, and the interlocking mechanism includes a plurality of engagement elements provided on each plate member sequentially away from each other in a direction orthogonal to the sliding direction, and Since it is constituted by a movable interlocking guide that forms a guide path in which each engagement element is movably engaged, there is no collision between the plate members during the expansion / contraction operation, and the sound and vibration generated during the expansion / contraction operation can be reduced. Moreover, it becomes a bellows type cover of a simple structure. Since no collision occurs, it can be effectively used as a cover for machinery that is affected by slight vibrations such as machine tools.
The movable body shall pass through the plate material at one end of the plurality of plate materials, and the engagement element provided on the plate material at the end portion is provided on the adjacent plate material side in the sliding direction from the movable body, When the engaging element is a pin-shaped member, the arrangement of the moving body is not hindered by the bellows type cover. In addition, it is also effective that the member that links the plate material and the interlocking guide is in the shape of a pin, without hindering the arrangement of the moving body.
When the movable body passes through the plate at one end of the plurality of plates, and the interlocking guide is rotatably supported around the rotation fulcrum located on the other end, Each engaging member can be easily restricted to a predetermined position in the plate material sliding direction while allowing the plate material to slide.
[Brief description of the drawings]
FIG. 1A is a horizontal sectional view showing a bellows type cover according to an embodiment of the present invention, FIG. 1B is a rear view thereof, and FIG. 1C is a longitudinal sectional view thereof.
FIG. 2 is an external perspective view showing a machine tool including the bellows type cover.
FIG. 3A is a horizontal sectional view showing the contraction operation of the bellows type cover, and FIG. 3B is a rear view thereof.
4A is a horizontal sectional view showing a bellows type cover according to another embodiment of the present invention, and FIG. 4B is a rear view thereof.
FIG. 5 is a horizontal sectional view showing the contraction operation of the bellows type cover.
6A is a horizontal sectional view of a conventional example, FIG. 6B is a rear view thereof, and FIG. 6C is a rear view showing a contraction operation.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10a ... Moving body 11 ... Moving body protrusion window 12 ... Bellows type cover 13A-13E ... Plate material 14 ... Interlocking mechanism 18A-18E ... Engagement element 19 ... Guide path 20 ... Interlocking guide 21 ... Turning fulcrum 22A-22E ... Engagement element

Claims (3)

In order to cover the moving area of the moving body and its surroundings, a plurality of plate materials are sequentially stacked in a shifted state, and these plate materials are slidably independently slidable in the direction of shift, respectively, An interlocking mechanism that interlocks the sliding operation of each plate material is provided, and this interlocking mechanism includes a plurality of engagement elements provided on each plate material sequentially apart from each other in a direction orthogonal to the sliding direction, and these engagement elements are movable. A bellows type cover composed of a movable interlocking guide formed with a guide path that engages with the guide. The movable body passes through a plate material at one end portion of the plurality of plate materials, and the engagement element provided on the plate material at the end portion is provided on the adjacent plate material side in the sliding direction from the movable body, and The bellows type cover according to claim 1, wherein the engagement element is formed of a pin-shaped member. The movable body passes through a plate member at one end portion of a plurality of plate members, and the interlocking guide is rotatably supported around a rotation fulcrum located on the other end portion side. The bellows type cover according to claim 1 or claim 2.

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