JPH0636745U - Telescoping cover - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a telescopic cover for protecting a guide surface between two saddles, which is simple and has a good sealing property against cutting chips and cutting fluids and can obtain stable operation. [Structure] The left end cover 6e at the bottom of the telescopic cover 6 is attached to the left saddle 2A that moves in the area on the left side of the bed 1 guide surface.
The uppermost right end cover 6a is fixed to the right saddle 2B that moves in the right area, and the center cover 6c in the middle is fixed to the bed 1 via the support 5, and the left between the center cover and the left end cover As a telescoping cover with a structure of five intermediate covers 6d and a right intermediate cover 6b movably provided between the center cover and the right end cover, the freely movable covers are simple one left and right middle covers. As a unique structure, it improves the sealing performance and operation stability.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a telescoping cover for protecting a guide surface between two moving bodies that move respectively on the right side and the left side of the guide surface.

[0002]

[Prior art]

 Conventionally, the sliding guide surface of a machine tool needs to be protected from chips and cutting fluid. For example, an opposed spindle lathe having opposed head stocks capable of moving and positioning on both sides of one sliding guide surface is no exception. In particular, as shown in FIGS. 4a and 4b, the telescopic cover that protects the sliding guide surface between the two headstocks is such that the lowermost fixed cover 102 is fixed to the central portion of the bed 101, and the fixed cover 102 is sequentially attached to both sides of the fixed cover 102. The covers 103A to 106A and 103B to 106B were overlapped, the left uppermost cover 106A was fixed to the left saddle 107A, and the right uppermost cover 106B was fixed to the facing end surface of the right saddle 107B. .

[0003]

[Problems to be solved by the device]

 The telescopic cover described in the prior art has a large number of components and has a large possibility that chips and the like will enter as the number of joints of each cover is large, resulting in poor sealing performance and high cost. Since the length of the cover in the moving direction is shorter than the width, there is a problem that the guide property is poor. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a telescopic cover which is simple, has a good sealing property, and provides stable operation. is there.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, a telescopic cover according to the present invention is a telescopic cover for protecting the guide surface between two moving bodies that move respectively on the left side and the right side of the bed guide surface. The uppermost layer cover and the lowermost layer cover are fixed to the respective end surfaces of the individual moving bodies facing each other, and the middle layer cover is fixed to the bed at a substantially central position of the guide surface.

[0005]

[Action]

 Since the middle middle-layer cover of the telescoping cover is fixed to the bed and cannot be moved, the middle-layer cover and the middle-layer cover can be moved by moving the top-layer cover or the bottom-layer cover attached to both moving bodies. The intermediate cover between the covers moves to cover the moving stroke of both moving bodies and protect the guide surface.

[0006]

【Example】

 Examples will be described with reference to the drawings. A left saddle 2A and a right saddle 2B are movably mounted on a guide surface provided on the bed 1, and the left saddle 2A is located near the center of the bed on the left side of the right end position a and on the right saddle. 2B is moved and positioned via a ball screw by a separate servo motor (not shown) in a region on the right side of the left end position b near the center of the bed. Two guide bars 3 are attached to the center of the bed 1 via supports 4 and 5 in parallel with the guide surface, and the right end of the center cover 6C of the telescopic cover 6 is fixed to the support 5. The bottom left end cover 6e is fixed to the right end of the left saddle 2A, and the top right end cover 6a is fixed to the left end of the right saddle 2B. Further, a right intermediate cover 6b is provided between the right end cover 6a and the center cover 6c so as to be movably overlapped in the guide surface direction.

A wiper 7 made of a soft material such as synthetic resin that slides on the lower cover is fixed to the left ends of the covers 6a to 6d, and the wiper 7 is attached to the right ends of the left intermediate cover 6d and the right intermediate cover 6b. The contact plates 8 and 9 abutting against the contact plates 8 and 9 are fixed, and the sliders 10 and 11 sliding on the guide bar 3 are fixed to the contact plates 8 and 9, respectively. Further, the contact plates 12 and 13 are fixed to the right end of the left end cover 6e and the right end of the right end cover 6a. When the left saddle 2A is moving leftward, the contact plate 12 contacts the wiper 7 of the left intermediate cover 6d, the left intermediate cover 6d is pulled out by the guide bar 3, and when moving rightward, the contact plate 12 is moved toward the left intermediate cover 6d. The left intermediate cover 6d is brought into contact with the backing plate 9 and is housed under the fixed center cover 6c.

When the right saddle 2B goes right, the wiper 7 at the left end of the right end cover comes into contact with the contact plate 8 of the right middle cover 6b, and the right middle cover 6b is pulled out by the guide bar 3 as a guide. Is brought into contact with the contact plate 8 and the right intermediate cover 6b is housed on the fixed center cover 6c. FIG. 3 is a sectional view taken along the line AA in FIG. 1, in which the bed 1 is a slant type of 45 °, and each of the covers 6a to 6e has a labyrinth seal groove fixed to the bed 1 above the inclined surface. A slide plate 17 is provided which has a bent portion which engages with 14 and 15 and which slides on a receiving plate 16 fixed to the bed 1 on the lower side.

Next, the operation of this embodiment will be described. Of the five telescoping covers 6, the central one central cover 6c is fixed to the bed side and does not move in the longitudinal direction. Therefore, when the telescoping covers 6 expand and contract due to the movement of both saddles 2A and 2B, both saddles 2A , 2B respectively attached to the left end cover 6e and the right end cover 6a, the left intermediate cover 6d and the right intermediate cover 6b, which are movable in the longitudinal direction, move using the guide bar as a guide to cover the movement stroke of both saddles. To protect the guideway. Further, since the guide bar 3 is attached to the support 5 for fixing the central cover 6c to the bed 1, the guide bar 3 should first be attached to the cover and then attached to the bed 1 side during assembly. You can Therefore, there is no need to adjust the cover according to the guide bar that has been positioned on the bed side as in the past, and the assembly time is shortened.

[0010]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. A middle cover fixed to the bed, a top cover and a bottom cover fixed to both saddles, and at least one each movably provided between the middle cover and the top cover and between the middle cover and the bottom cover. Since it is a simple telescoping cover composed of a single intermediate cover, only the intermediate cover can move freely, and the sealability is good and more stable guideability is obtained.

[Brief description of drawings]

FIG. 1A is a top view of a telescopic cover of this embodiment, showing a stretched state, and b is a side view of a telescope cover showing a contracted state.

FIG. 2 is a partially enlarged view of FIG. 1b.

FIG. 3 is a sectional view taken along line AA of FIG. 1a.

FIG. 4a is a top view of a conventional telescopic cover,
The figure which shows the extended state, b is a figure showing the state which contracted in the side view of a.

[Explanation of symbols]

1 bed 2A saddle 2B right saddle 3 guide bar 4,5 support 6 telescopic cover 6a right end cover 6b right middle cover 6c center cover 6d left middle cover 6e left end cover 10,11 slider

Claims (1)

[Scope of utility model registration request] 1. A telescopic cover for protecting the guide surface between two moving bodies that move in respective areas on the left side and the right side of the bed guide surface, the end surfaces of the two moving bodies facing each other. Secure the top cover and bottom cover to the
A telescopic cover characterized in that a middle-layer cover is fixed to the bed at a substantially central position of the guide surface.