JPH0613812Y2 - Machine tool sliding surface protection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a sliding surface protection device for protecting a sliding surface of a machine tool from chips and dust.

[Prior Art] Conventionally, for example, as a device for protecting a sliding surface of a machine tool of a type in which a movable work part protruding from a main body part moves up and down, there is one disclosed in Japanese Patent Publication No. 63-5237. This sliding surface protection device, as shown in FIG.
1. A pair of mounting members 22 fixed to the upper and lower ends of the guide 1, guide rods 23 installed between the mounting members 22 inside the fixed cover 21 (on the left side in the drawing), and the fixed cover 21.
And a plurality of covering covers 25 that are movably supported in the up-down direction X on the guide rods 23 at locking portions 24 formed at both upper and lower ends in order. The fixed cover 21 and the covering covers 25 have windows 21a and 25a for allowing the movable working section D to project.
Is transparently installed.

Further, in the sliding surface protection device having the above-mentioned configuration, in the moving regions on the upper and lower sides of the moving work portion D, the two adjacent covers 2
The upper and lower edges of the inner cover 25 of the outer cover 1, 25 move relative to the upper and lower edges of the outer covers 21, 25 of the working part D.
It is supposed to be located closer.

Therefore, when the moving work portion D is raised or lowered, the locking portion 24 of the innermost covering cover 25 comes into contact with the locking portion 24 of the adjacent covering cover 25 on the outer side thereof and each covering cover 2
5 sequentially moves up or down, and the overlapping portion between the covers 21 and 25 expands and contracts in the up-down direction X in the moving regions on both the upper and lower sides of the moving work portion D.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional sliding surface protection device, when the moving work portion D is raised or lowered, the window portions 25a of the respective covering covers 25 are adjacent to each other on the outer side of the covering portions 25a. Alternatively, it is exposed on the fixed cover 21. Therefore, the chips and dust generated when the workpiece is cut by the moving work unit D causes the window portions 21a, 2 of the outer covers 21, 25 to be removed.
5a, in particular, may enter between the lower edge part and the adjacent cover cover 25 on the inside thereof, which causes frictional resistance and deteriorates the followability of each cover cover 25 to the elevation of the moving work part D. was there.

The purpose of the present invention is to prevent the cutting chips and dust generated during the operation of the machine tool from entering between the covers, and to make the covered cover reliably follow the reciprocating motion of the moving work part. It is to provide a moving surface protection device.

[Means for Solving the Problems] Therefore, in order to achieve the above object, the present invention provides a fixed cover between a pair of rail members, and moves a plurality of covering covers on the fixed cover with respect to both rail members. The fixed cover and the covering cover are provided with a window part that allows the movable work part provided on the sliding surface of the machine tool to reciprocate and project outward to the cover. Each covering cover is provided with a transmitting portion for transmitting the movement of the movable working unit to the adjacent covering covers and sequentially moving them, and with the reciprocating movement of the moving working unit, the distance between the covers in the moving regions on both sides thereof is increased. In a sliding surface protection device for a machine tool in which the overlapping portion is allowed to expand and contract in the reciprocating direction, each of the covering covers is composed of a single plate material connected to both sides of the moving working portion, and this covering cover is the most Inside and On the fixed cover, the cover covers are sequentially stacked outward along the projecting direction of the moving work unit, and the covering covers on the outer side of the two adjacent covers along with the reciprocating movement in the moving regions on both sides of the moving work unit. Both end edges of are located closer to or closer to the moving work part than both end edges of the inner cover, and
It is arranged so that both end edges of the window portion of the inner cover relative to both end edges of the outer cover cover are located closer to the moving work portion, and one end edge of the cover cover is provided on the inner side. A sealing member that is inclined toward the outside for sealing between the adjacent cover cover or fixed cover is provided, and the upper end edge of the cover cover is in contact with a regulation plate of a rail member to maintain a distance from the regulation plate. A space holding piece for performing the above is attached.

[Operation] When the moving work unit reciprocates together with the outermost covering cover, the reciprocating motion is transmitted to the adjacent covering covers by the transmitting unit, and the respective covering covers are sequentially moved. Then, in the moving regions on both sides of the moving work unit, the overlapping portion between the covers expands and contracts in the reciprocating direction of the moving work unit.

When the work piece is machined by the moving work part, chips and dust are scattered and collide with the covering cover. However, in the sliding surface protection device of the present invention, both edges of the outer covering covers among the covers adjacent to each other are covered. However, since it is located closer to the moving work portion with respect to both end edges of the cover adjacent to the inside thereof, or is aligned with the both ends, the window portion of the inner cover is hidden by the outer covering cover and is not exposed. Dust is less likely to enter between the covering covers.

In a machine tool in which the movable work unit reciprocates in the vertical direction, especially, cutting chips and dust easily enter from the lower end edge of the window of each cover, but this can be prevented. on the other hand,
Since the sealing member is provided at the upper edge of each covering cover, the covering cover is securely sealed between the covering cover and the fixed cover which are adjacent to each other inside, and further, the gap between the covering cover and the regulation plate of the rail member. Is always held at a constant interval by the spacing plate, and maintains a sealed state without rattling during reciprocation.

[Embodiment] An embodiment embodying the present invention will be described below with reference to FIGS.

As shown in FIG. 3, the machine tool A to which the sliding surface protection device of the present embodiment is attached projects forward from the main body portion B and the sliding surface C that is the front surface (the right side surface in the drawing). And the moving work section D which has a sliding surface c.
While reciprocating in the up and down direction X, the work (not shown) is subjected to processing such as cutting and grinding.

A sliding surface protection device is provided in front of the sliding surface C of the machine tool A. As shown in FIG. 1, the sliding surface protection device includes a pair of left and right rail members 1 each having a restriction plate 9 fixed to the entire front end edges of a pair of support plates 8 extending in the vertical direction in parallel with each other. A pair of fixed covers 2 provided between the support plates 8 of the rail member 1 and a pair of the support plates 8 which are sequentially stacked on the fixed cover 2 between the support plates 8 toward the outside along the projecting direction of the movable working unit D are provided. It is composed of a plurality of (five in this embodiment) cover covers 3 to 7 made of plate materials.

Each of the cover covers 3 to 7 is formed such that the left-right width thereof is slightly narrower than the distance between the pair of support plates 8 and is slidable in the up-down direction X between the support plates 8. . The innermost cover cover 3 among the cover covers 3 to 7 is formed to have a shorter vertical length than the fixed cover 2, and the other cover covers 4 to 7 are formed to have shorter vertical lengths toward the outer side. There is.

As shown in FIG. 3, the fixed cover 2 and each of the covering covers 3 to 7 are provided with a window portion 2 which can allow the protrusion of the movable working portion D.
a and 3a to 7a are transparently provided. Each window 2
The outer portions of a and 3a to 7a are formed to have shorter vertical lengths, and the outermost window portion 7a has a size capable of externally fitting the movable working portion D.

On the inner surface of each of the covering covers 3 to 7, their window portions 3 are formed.
A pair of upper and lower engaging pieces 10a and 10b as transmitting portions are provided on the upper and lower sides of a to 7a so as to project rearward, and the upper and lower engaging pieces 10a and 10b are adjacent to the insides of the covering covers 3 to 7. Window portions 3a to 6a of the covering covers 3 to 6 or the fixed cover 2
Through the window portion 2a. Therefore, when the moving work section D moves upward and the outermost cover cover 7 is moved upward, the upper locking piece 10a comes into contact with the upper edge of the window portion 6a of the inner cover cover 6, and the cover cover 6 is removed. The upper locking pieces 10a of the covering cover 6 thus pushed up similarly push up the upper locking pieces 10a of the inner covering covers 3 to 5 in the same manner. As shown in FIG. 4, when the upper locking piece 10a of the innermost covering cover 3 comes into contact with the upper edge of the window 2a of the fixed cover 2, the covering covers 3 to 7 are further moved upward. Regulate.

In addition, the moving work section D descends to cover the outermost cover cover 7
Is moved downward, the lower engaging piece 10b abuts the lower edge of the window portion 6a of the inner cover 6 and pushes down the same cover 6, and the lower engaging piece of the cover 6 pushed down. Similarly, 10b pushes down the lower locking pieces 10b of the inner covering covers 3 to 5 in order. As shown in FIG. 3, when the lower locking piece 10b of the innermost cover 3 comes into contact with the lower edge of the window 2a of the fixed cover 2, further lowering of the cover 3 to 7 is prevented. regulate.

As shown in FIGS. 1 and 2, a pair of protrusions 11 are integrally provided on the left and right ends of the upper edge of each of the covering covers 3 to 7. The slanted portion 11a is formed so that the gap between the facing protrusions 11 is narrowed. A sealing member 13 made of synthetic rubber is attached between the inclined portions 11a at the upper edges of the covering covers 3 to 7, and the covering covers 3 to 7 are adjacent to the covering covers 3 to 6. Alternatively, the gap with the fixed cover 2 is closed. Further, the front surface of each sealing member 13 is formed in a slanted shape so as to be lower toward the front side, that is, the outer side, so that chips and dust colliding with the covering covers 3 to 7 and the fixed cover 2 are dropped downward.

By the way, on the slanted portion 11a of the protrusion 11, a flat plate-shaped spacing holding piece 12 is fixed. As shown in FIG. 3, the space holding pieces 12 are adjacent to each other inside the covering covers 4 to 7 in a state where the covering covers 3 to 7 are stacked and mounted between the pair of rail members 1. Three
6 or the fixed cover 2 and the regulation plate 9 of the rail member 1 are formed so as to have a longer dimension in the front-rear direction as they come to the upper side. Therefore, the sealing member 13 at the upper edge of each of the covering covers 3 to 7 is in contact with the inner covering covers 3 to 6 or the fixed cover 2 so as to always maintain a close contact state, and the covering covers 3 to 7 and the regulating plate 9 are kept. The interval between and is always maintained at a predetermined interval.

Next, the operation and effect of this embodiment configured as described above will be described.

FIG. 3 shows a state in which the movable working section D is lowered to the lowest position. In this state, the lower engaging piece 10b of the innermost covering cover 3 abuts the lower edge of the window 2a of the fixed cover 2, and the lower engaging pieces 10b of the outer covering covers 4 to 7 are lower than the lower engaging piece 10b. The locking pieces 10b are sequentially in contact with each other.
At this time, the lower end edges of the covering covers 3 to 7 are substantially aligned with the lower end edge of the fixed cover 2. Further, the sealing member 13 at the upper edge of the innermost covering cover 3 is in close contact with the outer surface of the fixed cover 2, and the other covering covers 4 to 7 are provided.
The sealing member 13 at the upper end is in close contact with the outer surfaces of the inner covering covers 3 to 6, respectively. Therefore, the cover cover 3 other than the window 2a of the fixed cover 2 and the outermost cover cover 7 is provided.
The windows 3a to 6a of 6 to 6 are covered by the outer cover covers 3 to 7.

When the machine tool A is operated and the work piece is processed by the moving work unit D, chips and dust are scattered. Most of these chips and dust are moved by the weight of the moving work part D.
Scatter below and collide with the lower part of the sliding surface protection device. However, as described above, in the present embodiment, since the lower edges of the covering covers 3 to 7 are aligned with the lower edges of the fixed cover 2, the cutting chips and dust are lower than the lower ends of the fixed cover 2 and the covering covers 3 to 7. Never enter the rim. Further, even if the chips and dust are scattered above the moving work portion D and collide with the outer side surfaces of the covering covers 3 to 7, these will be adhered to the sealing member 13 at the upper edges of the covering covers 3 to 7. It is blocked and does not enter between each cover 3-6. In particular, in this embodiment, since the front surface of the sealing member 13 is formed in a slanted shape so that it becomes lower toward the front side, chips or chips that directly collide with it or fall along the front side surfaces of the covering covers 3 to 7. The dust does not stay on the sealing member 13 and falls quickly.

Further, since the pair of distance holding pieces 12 provided at the left and right ends of the upper edges of the covering covers 3 to 7 are inclined so that the distance between the distance holding pieces 12 facing each other becomes narrower toward the lower side, the rail member 1 is provided. Even if chips and the like collide with the sliding parts of the cover covers 3 to 7, they are collected on the sealing member 13 along these spacing pieces 12 and then dropped.

Subsequently, when the movable working unit D is lifted from the state shown in FIG. 3, the outermost covering cover 7 is also lifted together with the movable working unit D as shown in FIG. Then, after the lower locking piece 10b of the outermost covering cover 7 separates upward from the lower edge of the window portion 6a of the covering cover 6 which is adjacent inside thereof,
The upper locking piece 10a of the outermost cover 7 comes into contact with the upper edge of the window 6a of the adjacent cover 6 on the inner side thereof and pushes it upward. Further, when the moving work section D is raised, the upper locking pieces 10a of the covering covers 3 to 6 are sequentially brought into contact with the upper edges of the windows 3a to 5a of the inner covering covers 3 to 5 in the same manner as described above, and the covering covers 3 to 5a. 3 to 5 are pushed upward in order from the outer one. Then, when the upper locking piece 10a of the innermost cover 3 comes into contact with the upper edge of the window 2a of the fixed cover 2, the upward movement of the cover 3 to 7 is restricted.

As described above, when each of the covering covers 3 to 7 is pushed up in order from the outer one, the overlapped portion between the lower ends of the moving working parts D extends in the lower moving region, and the inner covering covers 3 to 7 extend. The window portions 3a to 6a of 6 are hidden by the outer covering covers 4 to 7 and are not exposed. Therefore, even if the cutting chips and dust collide with the lower portions of the covering covers 3 to 7 due to the operation of the moving work section D, they fall and are adjacent to the lower end edges of the outer covering covers 4 to 7 on the inner side thereof. Cover cover 3 to
6 does not enter the gap with the outer surface. Each cover 3
In the process of pushing up to 7 upwards, the sealing member 13 at the upper end of each covering cover 3 to 7 is located on the outer surface of the covering covers 3 to 6 or the outer surface of the fixed cover 2 which is adjacent inside. Therefore, similar to the state shown in FIG. 4, it is possible to prevent chips and the like from entering and accumulating in the sealing member 13 portion.

When the moving work section D is lowered, the respective covering covers 3 to 7 move downward in order from the outer side to the inner side, and the overlapping portion between the covering covers 3 to 7 expands and contracts to slide the machine tool A. Block surface C. Therefore, the same operation and effect as when the moving work section D is raised can be obtained.

As described above, in the present embodiment, the covering covers 3 to 7 are sequentially overlapped on the fixed cover 2 to the outside, and the reciprocating motions on both sides of the moving working section D cause the adjacent covers 2 and 3 to be adjacent to each other. Outer covering covers 3 to 7 have upper and lower end edges located closer to or closer to the moving work portion D than upper and lower end edges of the inner covers 2, 3 to 6, and
The upper and lower end edges of the windows 2a and 3a to 6a of the covers 2, 3 to 6 inside the outer cover covers 3 to 7 are located closer to the moving work section D than the upper and lower end edges of the outer cover covers 3 to 7. , The windows 2a and 3a to 6a of the inner covers 2 and 3 to 6 are hidden by the outer covering covers 3 to 7 and are not exposed, and the cutting chips and dust do not enter between the covers 2 and 3 to 7. Less. Further, in this embodiment, since the covers 2, 3 to 7 and other operating parts are all exposed to the front, maintenance such as cleaning is easy.

The present invention is not limited to the configuration of the above embodiment,
For example, the shape of the window portion 7a of the outermost cover 7 can be appropriately changed according to the outer shape of the movable working portion D, or can be embodied by being arbitrarily changed without departing from the spirit of the invention. Further, the present invention can be applied to a machine tool of a type in which the mobile work section D reciprocates in the horizontal direction,
Also in this case, the same operation and effect as those of the above-described embodiment are obtained.

[Effects of the Invention] As described in detail above, according to the present invention, the chips and dust generated in the machine tool are prevented from entering between the covers, and the covered cover reliably follows the reciprocating motion of the moving work part. Not only can it be performed, but there is an effect that the distance between the covering cover and the restriction piece is always maintained accurately.

Further, when the movable work unit reciprocates in the vertical direction, since the sealing member is provided at the upper edge of the covering cover, it is possible to seal between the covering cover and the inner covering cover or the fixed cover adjacent to the covering cover, It is possible to reliably prevent cutting chips, dust, and the like that are generated when the moving work unit is activated, and to facilitate maintenance.

[Brief description of drawings]

1 to 4 show an embodiment embodying the present invention.
The figure shows a partially cutaway perspective view of the sliding surface protection device, Fig. 2 shows a partial front view of the sliding surface protection device, and Fig. 3 shows the sliding surface protection showing a state in which the moving work unit has moved to the lowest position. Sectional view of device, fourth
FIG. 5 is a cross-sectional view of the sliding surface protection device showing a state where the movable work unit is moved to the uppermost position, and FIG. 5 is a cross-sectional view of a conventional sliding surface protection device. DESCRIPTION OF SYMBOLS 1 ... Rail member, 2 ... Fixed cover, 3-7 ... Cover cover, 2a, 3a-7a ... Window part, 10a ... Upper locking piece as a transmission part, 10a ... Lower locking piece as a transmission part, 13
... Sealing member, A ... Machine tool, C ... Sliding surface, D ... Moving work section.

Claims (2)

[Scope of utility model registration request] 1. A fixed cover (2) is provided between a pair of rail members (1), and a plurality of cover covers (3 to 7) are moved on the fixed cover (2) with respect to both rail members (1). The fixed cover (2) and the cover cover (3)
7 to 7), a movable working section (D) reciprocally provided on the sliding surface (C) of the machine tool (A) is covered (2, 3).
Window portions (2a, 3a) that allow them to project to the outside.
.About.7a) are provided, and the movement of the movable working unit (D) is moved to each of the covering covers (3 to 7) adjacent to the covering cover (3).
~ 6) to transmit to sequentially move these (10)
a, 10b) are provided, and the covers (2, 3 ...) are provided in the moving regions on both sides of the moving work unit (D) according to the reciprocating motion of the moving working unit (D).
In a sliding surface protection device for a machine tool, in which the overlapping portion between 7) expands and contracts in the reciprocating direction (X), each of the covering covers (3 to 7) is provided on both sides of the moving working portion (D). The cover cover (3 to 7) is composed of one continuous plate member, and the cover cover (3 to 7) is moved toward the innermost fixed cover (2). Along the outer side of the outer cover cover (3 to 7) of the adjacent cover (2, 3 to 7) along with the reciprocating movement in the moving regions on both sides of the moving work section (D). The edge is located closer to or closer to the moving work part (D) than both end edges of the inner cover (2, 3 to 6), and the edge of the outer cover cover (3 to 7) is Windows (2a, 3) of covers (2, 3-6) on the inner side of
a to 6a) are arranged so that both end edges thereof are located closer to the movable working section (D), and one end edge of the covering cover (3 to 7) is adjacent to the covering cover (3 to 6) or a sealing member (13) which is inclined toward the outside to seal between the fixed cover (2) and the fixed cover (2), and the rail member (1) is restricted at the upper edge of the covering cover (3-6). An apparatus for protecting a sliding surface of a machine tool, characterized in that an interval holding piece (12) which is in contact with the plate (9) and holds an interval with the regulation plate (9) is attached. On the innermost fixed cover (2), the covering covers (3 to 7) are sequentially overlapped outward along the projecting direction of the movable working unit (D) to move regions on both sides of the movable working unit (D). With the reciprocating movement, both adjacent covers (2, 3 to 7)
Of the outer cover cover (3 to 7), the both end edges of the outer cover cover are located closer to the movable working section (D) than the both end edges of the inner cover (2, 3 to 6), or the outer cover cover (3 to 7) and Both end edges of the window portions (2a, 3a to 6a) of the covers (2, 3 to 6) located inside the cover covers (3 to 7) are located closer to the moving working portion (D) than the cover cover (3 to 7). A sliding surface protection device for machine tools characterized by the above. 2. The movable working section (D) reciprocates in the vertical direction, and the cover cover (3-6) or the fixed cover (3-6) adjacent to the cover cover (3-7) is fixed to the upper edge of the cover (3-7). The sliding surface protection device for a machine tool according to claim 1, further comprising a sealing member (13) capable of sealing the space between the sliding surface and the sliding surface (2).