JPH0633642U - Machine tool sliding surface protection device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sliding surface protection device for a machine tool, which eliminates the need to adjust the distance between the cover plates when assembling the machine tool and can easily perform the assembly work. [Structure] A plurality of cover plates are arranged in the moving regions on both sides of a movable work part D provided so as to reciprocate along a sliding surface of a machine tool A, and an overlapping part between adjacent cover plates is provided. In the sliding surface protection device configured to expand and contract in the reciprocating direction, a pair of fixed covering plates 2 and 3 which are the most distant from the moving working unit D among the plurality of covering plates are attached to the moving working unit D. Coupling plates 12, 13, 22, 23, 32, 33, which are connected to each other by a fixed rail 4 extending in the reciprocating direction and sequentially approach the moving work part D from the pair of fixed covering plates 2, 3, respectively, move rails 14, respectively. 24, 34, and a guide that guides the adjacent rails 4, 14, 24, 34 to the rails 4, 14, 24, 34 so as to be slidable only in the reciprocating direction of the moving work part D. Pieces 4b, 14b, 24b, 3
4b was formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sliding surface protection device for protecting a sliding surface of a machine tool from cutting chips, dust and cutting oil.

[0002]

[Prior art]

 Conventionally, for example, in a machine tool of a type in which a moving work part protruding from a main body part moves up and down, a device for protecting the sliding surface of the moving work part is disclosed in Japanese Patent Publication No. 3-21297. is there.

As shown in FIG. 9, this sliding surface protection device is provided in a moving region of a moving work unit D that moves in the vertical direction Y between an upper beam 50 and a lower beam 51 of a column. The sliding surface protection device includes a column upper fixed cover plate 52 screwed to the upper beam 50 of the column, a spindle head upper fixed cover plate 53 screwed to the upper surface of the moving work part D, and a moving work part D. The lower spindle head fixed covering plate 54 screwed to the lower surface, the lower column fixed covering plate 55 screwed to the lower beam 51, the upper column fixed covering plate 52, and the upper spindle head fixed covering plate 53. Two upper covering plates 56 slidable in the vertical direction Y between them, and two lower covering plates slidable in the vertical direction Y between the spindle head lower fixed covering plate 54 and the column lower fixed covering plate 55. It is composed of a plate 57. Further, as shown in FIG. 10, the upper cover plate 56 and the lower cover plate 57 are connected to each other by a rectangular connecting frame 58.

When the moving work section D is raised or lowered, the connecting frame 58 of the cover plates 56, 57 closer to the moving work section D abuts on the connecting frame 58 adjacent to the outer side of the cover plates 56, 57. 57 moves up and down sequentially, and is telescopically expanded and contracted.

[0005]

However, in the above-mentioned conventional sliding surface protection device, in order to smoothly move the upper cover plate 56 and the lower cover plate 57 up and down, the column upper fixed cover plate 52 and the spindle head upper part are provided. The distance d in the front-rear direction (the left-right direction in FIG. 9) with the part-fixed covering plate 53 and the front-rear distance between the spindle head lower fixed covering plate 54 and the column lower fixed covering plate 55 are defined as the upper covering plate 56, the lower covering plate 57 It is necessary to appropriately adjust the thickness and the number of sheets, and the distance between the adjacent upper covering plate 56 and lower covering plate 57.

Therefore, when assembling the sliding surface protection device to the machine tool, the column upper fixed coating plate 52 and the spindle head upper fixed coating are individually provided depending on the thickness and number of the upper coating plate 56 and the lower coating plate 57. Since the proper value of the longitudinal distance d between the plate 53 and the longitudinal distance between the spindle head lower fixed covering plate 54 and the column lower fixed covered plate 55 was measured and assembled, the work of assembling the sliding surface protection device was troublesome. There was a problem that was.

The present invention has been made in order to solve the above problems, and its purpose is to eliminate the need to adjust the distance between the cover plates when assembling to the working machine, thereby facilitating the assembling work. An object is to provide a sliding surface protection device for a machine tool that can be easily performed.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a plurality of coating plates in the moving regions on both sides of a moving work part that is reciprocally movable along a sliding surface of a machine tool and adjoins them. A sliding surface protection device for a machine tool, in which the plates are always overlapped with each other, and the overlapping part between the coated plates expands and contracts in the reciprocating direction as the moving work part reciprocates, Of the plurality of coating plates, a pair of coating plates that are most distant from the moving work unit are connected by a connecting member that extends in the reciprocating direction of the moving work unit, and a pair of coatings that are most distant from the moving work unit. Guides that connect the covering plates that sequentially come from the plate to the moving work unit by connecting members, and guide the adjacent connecting members to the connecting members so that they can slide only in the reciprocating direction of the moving work unit. Part adjacent to the moving work part. The coating plates are summarized in that the formation of the window portion that allows the protrusion of the moving tool part.

[0009]

[Action]

 According to the present invention, by adopting the above means, when the movable working unit is reciprocated together with the pair of adjacent covering plates, the movement is sequentially transmitted to the adjacent covering plates, and the movement of both sides of the moving working unit is performed. In the area, the overlapping portion between the covering plates is expanded and contracted in the reciprocating direction of the moving working portion.

Each of the cover plates is connected to a connecting member, and each of the connecting members is provided with a guide portion that guides an adjacent connecting member so as to be slidable only in the reciprocating direction of the moving work unit. Therefore, each cover plate is only allowed to slide in the reciprocating direction of the moving work part. Also, whether or not each cover plate slides smoothly is determined by the shape and size of the guide part, so the distance between each cover plate can be adjusted during the manufacturing process of the guide part. No need for troublesome adjustment work when assembling to a machine.

[0011]

【Example】

 An embodiment embodying the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, a machine tool A to which the sliding surface protection device according to the present embodiment is attached has a main body B and a sliding surface C formed on the front surface (right side surface in the drawing) of the main body B. It is composed of a moving work section D projecting toward. The moving work unit D is adapted to perform machining such as cutting and grinding on a workpiece (not shown) while reciprocating on the sliding surface C in the vertical direction Y. At a position in front of the sliding surface C of the machine tool A, a frame E surrounding the sliding surface C is fixed. A sliding surface protection device is provided on the front side of the frame E.

The sliding surface protection device includes a fixed covering unit 1, a first moving covering unit 11, a second moving covering unit 21 and a third moving covering unit 31 which are sequentially accommodated in the fixed covering unit 1. It consists of and. The fixed covering unit 1 is fixed to the frame E on the rear surface with screws or the like.

As shown in FIGS. 6 and 7, the fixed cover unit 1 includes an upper fixed cover plate 2 made of a flat metal thin plate and a lower fixed cover plate 3 made of a flat metal thin plate. It consists of a pair of fixed rails 4 as members. Each of these fixed rails 4 is formed by bending both sides of a rectangular thin metal plate in the longitudinal direction in the same direction, and forms a supporting piece 4a and a pair of restricting pieces 4b as guide portions that are perpendicular to the supporting piece 4a. Is made. Therefore, the fixed rail 4 has a U-shaped cross section. The pair of fixed rails 4 extend in parallel so that the opening sides of the U-shaped cross section face each other, and the upper ends of the front side (upper side of FIGS. 6 and 7) between the two restricting pieces 4b are the same. Upper fixed The left and right ends of the covering plate 2 are fixed by welding. Further, the left and right ends of the lower fixed cover plate 3 are welded and fixed at the lower end positions between both the restriction pieces 4b on the rear surface side.

Locking pieces 2a, 3a extending rearward are provided at the upper ends of the upper fixed covering plate 2 and the lower fixed covering plate 3, respectively, at right angles to the surfaces of the fixed covering plates 2, 3. The locking pieces 2a and 3a are provided integrally with the upper fixed cover plate 2 and the lower fixed cover plate 3, respectively, and are bent at a right angle in the manufacturing stage of the sliding surface protection device. It

Each of the first to third moving coating units 11, 21, 31 has a shape similar to that of the fixed coating unit 1. That is, in the first moving cover unit 11, the second moving unit 21, and the third moving unit 31, the upper cover plates 12, 22, 32, the lower cover plates 13, 23, 33, and the locking pieces 12a, respectively. , 13a, 22a, 23a, 32a, 33a have substantially the same shape and size as those of the fixed covering unit 1.

Then, in the moving rail 14 as the connecting member of the first moving covering unit 11, the width of the supporting piece 14a thereof is twice the width of the supporting piece 4a of the fixed covering unit 1 by the plate thickness. The width of the restriction piece 14b as the guide portion is formed to be narrower than the width of the restriction piece 4b of the fixed covering unit 1 by the plate thickness. The length of the movable rail 14 is shorter than the length of the fixed rail 4 within the range of the vertical length of the upper cover plate 12 or the lower cover plate 13. The movable rail 14 of the first movable covering unit 11 thus configured is accommodated in the fixed rail 4 so as to be slidable only in the vertical direction Y.

Similarly, the second moving coating unit 21 is more than the first moving coating unit 11, the third moving coating unit 31 is more than the second moving coating unit 21, and the supporting pieces 24a, 34a. Is narrowed by a little more than twice the plate thickness, and the widths of the restriction pieces 24b and 34b as guide portions are narrowed by a little more than the plate thickness. Similarly, the lengths of the movable rails 24 and 34 as the connecting members are also short within the range of the vertical length of the upper cover plate 12 or the lower cover plate 13. The moving rail 24 of the second moving covering unit 21 thus configured is accommodated in the moving rail 14 of the first moving covering unit 11 so as to be slidable only in the vertical direction Y. The moving rail 34 of the moving covering unit 31 is accommodated in the moving rail 24 of the second moving covering unit 21 so as to be slidable only in the vertical direction Y.

In the third moving covering unit 31, the window 35 surrounded by the upper covering plate 32, the lower covering plate 33, and the pair of moving rails 34 when viewed from the front surface thereof is located outside the moving working unit D. It is a size that can be fitted.

Therefore, as shown in FIGS. 2 and 3, when viewed from the front of the sliding surface protection device, the upper fixed cover plate 2 and the first cover unit are arranged above the moving work part D from above. The upper cover plate 12 of the cover 11, the upper cover plate 22 of the second cover unit 21, and the upper cover plate 32 of the third cover unit 31 are sequentially stacked on the rear side. Further, below the moving work section D, from the upper part thereof, the lower covering plate 33 of the third moving covering unit 31, the lower covering plate 23 of the second moving covering unit 21, the lower covering of the first covering unit 11 are shown. The plate 13 and the lower fixed covering plate 3 are sequentially stacked on the rear side.

Therefore, with the vertical movement of the movable work section D, the respective covering plates 12, 13, 22, 23, 32, 33 are adapted to telescopically stretch and contract. Next, a process of manufacturing the sliding surface protection device having the above structure will be described.

First, as shown in FIG. 6, the fixed covering unit 1 is manufactured by welding the upper fixed covering plate 2 and the lower fixed covering plate 3 to the pair of fixed rails 4, and similarly, the first to first Each of the three moving coating units 11, 21, 31 is manufactured individually.

Then, in each of the covering units 1, 11, 21 and 31, the respective locking pieces 3a, 13a, 23a, 32a and 33a integrally provided on the covering plate are bent and formed. However, the locking pieces 2a of the upper fixed covering plate 2 of the fixed covering unit 1 and the locking pieces 12a, 22a of the upper covering plates 12, 22 of the first and second moving covering units 11, 21 are at this point of time. The locking portions 2a, 12a, 22a are not bent, but are placed on the planes of the upper fixed covering plate 2 and the upper covering plates 12, 22, respectively, and are left in a flat plate shape as a whole. Therefore, at this stage, the fixed coating unit 1, the first and second moving coatings 11 and 21 are open at their upper surfaces without being blocked by the locking portions 2a, 12a and 22a.

After manufacturing each unit 1, 11, 21, 31 in this way, first, the third moving covering unit 31 is inserted from the upper opening of the second moving covering unit 21, and then the second moving covering unit. The locking piece 22a on the upper side of 31 is bent 90 degrees rearward. Next, the second moving covering unit 21 is inserted from the upper opening of the first moving covering unit 11, the locking piece 12a on the upper side of the first moving covering unit 11 is bent, and further, the fixed covering unit 1 The sliding surface protection device is manufactured by inserting the first moving coating unit 11 from the upper opening and bending the locking piece 2a on the upper side of the fixed coating unit 1.

In addition, in this embodiment, the plate thickness of the sliding surface protection device is drawn thick in each drawing for the sake of clarity of the structure, but in reality, each cover plate and each rail is about 1 mm to 1.6 mm. It is composed of a thin metal plate. Further, the width of the support piece 4a is actually thin and compact.

Next, the operation and effect of the sliding surface protection device configured as described above will be described. When the machine tool A is operated and the movable work section D slides upward from the state shown in FIG. 1, the third movable covering unit 31 integrally moves upward as the movable work section D moves upward.

When the locking piece 32 a on the upper side of the third moving covering unit 31 comes into contact with the locking piece 22 a on the upper side of the second moving covering unit 21 soon, the locking piece 22 a is pushed up. As a result, both the second and third moving covering units 21 and 31 are integrally moved upward. Further, when the upper locking piece 22a of the second moving covering unit 21 comes into contact with the upper locking piece 12a of the first moving covering unit 11, each of the first to third moving coverings is moved. Units 11, 21 and 31 move up together.

Then, when the movable working section D reaches the uppermost position, as shown in FIG. 2, the locking piece 12 a on the upper side of the first movable covering unit 11 is locked on the upper side of the fixed covering unit 1. It is in contact with the piece 2a. When the moving coating units 11, 21, 31 are pushed up in this way, the overlapping portions of the lower fixed coating plate 3 and the lower coating plates 13, 23, 33 arranged below the moving work section D are removed. Although it extends, the adjacent lower fixed cover plate 3 and lower cover plates 13, 23, 33 do not separate in the vertical direction. Therefore, even if the moving work section D is operated in the state shown in FIG. 2, the chips and dust that have collided with the lower cover plates 13, 23, 33 will fall downward and enter the sliding surface C side. There is no.

On the contrary, when the movable working part D slides downward from the state of FIG. 2 to the lowermost position, as shown in FIG. 3, the locking part 3a on the lower side of the fixed covering unit 1 and the first ~ The lower locking portions 13a, 23a, 33a of the third moving covering units 11, 21, 31 are in a state of being superposed. Then, the overlapping portions of the upper fixed cover plate 2 and the upper cover plates 12, 22, 32 extend, but the adjacent upper fixed cover plate 2 and the upper covered plates 12, 22, 32 are separated from each other in the vertical direction. There is no such thing. Therefore, the same operation and effect as when the moving working section D is moved upward can be obtained.

Normally, in the sliding surface protection device, in order to smoothen the operation of each coating plate 12, 13, ..., 32, 33 that follows the movement of the moving work part D, the adjacent coating plates 12, 13 are arranged. , ..., 32, 33 must be carefully selected, but in the sliding surface protection device of this embodiment, the fixed covering unit 1 and the moving covering units 11, 21, 3 1 are separated from each other. Since it is determined by the width of the support pieces 4a, 14a, 24a, 34a of the fixed rail 4 and the movable rails 14, 24, 34 and the width of the restricting pieces 4b, 14b, 24b, 34b at the time of manufacture, It is possible to save the trouble of adjusting the distance between the adjacent moving coating units 11, 21, 31 at the time of mounting.

In addition, in the sliding surface protection device of the present embodiment, the first to third moving coating units 11, 21, and 31 are in a state in which they are irremovably housed in the fixed coating unit 1. Therefore, the entire apparatus is not bulky, and the transportation work or the like can be easily performed.

The present invention is not limited to the above-mentioned embodiment, and can be implemented as follows, for example. (1) As shown in FIG. 8, a wiper 41 made of rubber or the like protruding rearward is attached to the lower end of each lower covering plate 13, 23, 33 in each moving covering unit 11, 21, 31. You may. However, when the wiper 41 is attached in this way, a spacer 42 is interposed between the rails 4, 14, 24 and 34 as shown in FIG. With the above structure, the cutting chips, dust, etc. adhering to the lower cover plates 3, 13, 23 are wiped, and the falling of these is promoted. Therefore, the sliding surface of the cutting chips, dust, etc. It is possible to reliably prevent entry into C. The wiper 41 may be attached to the lower ends of the upper cover plates 2, 12, 22.

Further, in the case where the movable working section D has the shape shown in FIG. 8, the upper side of the movable working section D is fixed to the rear surface of the upper covering plate 32 of the third moving covering unit 31, and The lower side may be fixed to the upper end of the front surface of the third moving and covering unit 31 with a stopper or the like having a V-shaped cross section by screws or the like. According to this structure, there is no possibility that cutting oil or the like will enter from between the moving work section D and the window section 35. (2) In the above embodiment, the number of the movable coating units 11, 21, 31 accommodated in the fixed coating unit 1 is three, but if there is at least one moving coating unit, an arbitrary number of movable coating units can be used. It can be selected appropriately. Therefore, for example, when the moving range of the moving work section D is large, the number of moving covering units can be increased to four or five. (3) In the above embodiment, the upper cover plates 2, 12, 22, 32, the lower cover plates 3, 13, 23, 33 and the rails 4, 14, 24, 34, which are separately provided, are integrated by welding. The upper cover plates 2, 12, 22, 32 and the rails 4, 14, 24, 34 are each formed of a single thin metal plate, and the lower cover plates 3, 13, 23, 33 Only one may be welded later. On the contrary, the lower cover plates 3, 13, 23, 33 and the rails 4, 14, 24, 34 are respectively formed by one metal thin plate, and only the upper cover plates 2, 12, 22, 32 are formed later. It may be welded. (4) An elastic body such as rubber may be fixed to the upper surface or the lower surface of each locking piece 2a, 3a, ..., 33a. With the above configuration, when the upper cover plates 2, 12, 22, 32 and the lower cover plates 3, 13, 23, 33 move up and down, the adjacent engaging portions 2a, 3a, ..., 33a contact each other. It is possible to suppress the interference sound generated in the. (5) In the above-described embodiment, the sliding surface protection device is applied to the machine tool A of the type in which the moving work part D reciprocates in the vertical direction, but for example, the type of work in which the moving work part D reciprocates in the horizontal direction. It can also be applied to machines.

[0033]

[Effect of device]

 As described above in detail, according to the present invention, since it is not necessary to adjust the distance between the cover plates when assembling to the machine tool, it is possible to easily perform the assembly work to the machine tool. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a sliding surface protection device showing an embodiment embodying the present invention.

FIG. 2 is a cross-sectional view of the sliding surface protection device showing a state in which the moving work unit is moved to the uppermost position.

FIG. 3 is a sectional view of the sliding surface protection device similarly showing a state in which the movable work unit has moved to the lowest position.

FIG. 4 is a sectional view taken along line α-α of FIG.

FIG. 5 is a β-β sectional view of FIG.

FIG. 6 is a perspective view showing a state in which a pair of fixed covering plates are also connected to a fixed rail.

FIG. 7 is a sectional view taken along the line γ-γ of FIG.

FIG. 8 is a perspective view of a sliding surface protection device according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view of a conventional sliding surface protection device.

FIG. 10 is a perspective view showing a state in which a pair of covering plates are connected to a connecting frame in a conventional sliding surface protection device.

[Explanation of symbols]

2 ... Upper fixed cover plate as cover plate, 3 ... Lower fixed cover plate as cover plate, 12, 22, 32 ... Upper cover plate as cover plate, 13, 23, 33 ... Lower cover plate as cover plate, 4 ... Fixed rails as connecting members, 14, 24,
34 ... Moving rails 4b, 14b, 2 as connecting members
4b, 34b ... restricting piece as a guide, A ... machine tool,
C ... Sliding surface, D ... Moving work section

Claims (1)

[Scope of utility model registration request] 1. A plurality of coating plates are provided in the moving regions on both sides of a moving work part (D) provided so as to be capable of reciprocating along a sliding surface (C) of a machine tool (A). Sliding of a machine tool such that adjacent cover plates are always overlapped with each other so that the overlapping part between the cover plates expands and contracts in the reciprocating direction as the moving work part (D) reciprocates. In the moving surface protection device, of the plurality of cover plates, a pair of cover plates (2, 3) that are most distant from the moving work unit (D) are connected to each other and extend in the reciprocating direction of the moving work unit (D). Connect with member (4),
Coupling plates (12, 13, 22, 23, 32, 33) coming closer to the moving working unit (D) from a pair of covering plates (2, 3) farthest from the moving working unit (D) are connected to each other. The connecting members (4, 14, 24, 34) are connected to each other, and the connecting members (4, 14, 24, 34) adjacent to the connecting members (4, 14, 24, 34) are reciprocated by the moving working unit (D). Guides (4b, 14) that guide slidably only in the moving direction
b, 24b, 34b), and the moving work section (D) is formed.
A sliding surface protection device for a machine tool, characterized in that a window portion (35) is formed between a pair of covering plates (32, 33) adjacent to each other to allow the projecting portion of the movable working portion (D).