JPH05138491A - Slide door device for machine tool - Google Patents

Abstract

PURPOSE:To dispense with a door guard for a slide door while surely preventing cutting liquid from leaking to facilitate maintainance and inspection work inside a drive mechanism cover member. CONSTITUTION:A slide door 5 for closing an opening 3a of a working chamber cover member 3 is provided in a machine tool 1 covered with a machine body cover 2 consisting of a driving mechanism cover member 4 and the working chamber cover member 3. A guide rail 7b of a nearly S-letter passage for guiding the slide door 5 is provided from the outer side position of the drive mechanism cover member 4 to the opening 3a, and the slide door 5 is moved inward a little at the position of the opening 3a. Becaus of this inward movement, the sliding door 5 is brought into close contact with a opening frame 6 to obtain sure prevension of leakage. By surely preventing leakage, it is possible to dispense with a conventional door guard to easily open and close the drive mechanism cover member 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide door device for a machine tool such as an automatic lathe in which a drive mechanism section and a processing chamber are covered with a machine body cover.

[0002]

2. Description of the Related Art Conventionally, in a machine tool such as an automatic lathe, the drive mechanism section and the processing chamber are covered with a machine cover in order to prevent dust from entering the drive mechanism section and scattering of cutting oil. A slide door is provided in the processing room for exchanging workpieces and tools. An example thereof is shown in FIGS. 6 and 7.

This machine tool 21 is a turret lathe, and its upper part is covered with a machine body cover 22. Aircraft cover 22
The processing chamber cover portion 23 covers the processing chamber 28 in which the spindle 26 and the turret 27 are arranged, and the driving mechanism cover portion 24 covers the driving mechanism portion 29 such as the spindle head 32 and the turret carriage 31. .. The sliding door 25 is the processing chamber cover 23.
Is a door for closing the opening 23a formed in the front wall of the drive mechanism cover portion 24 when the opening 23a is opened.
Stored in 30.

Various detectors 34 are provided at positions adjacent to the main shaft 26 on the side of the slide door 25, and a drive source 33 thereof is arranged in the drive mechanism cover 24. Detector
The drive source 33 includes, for example, a cut-off sensor that detects that the work of the spindle 26 has been cut into a predetermined length.
It is provided with a rotation arm 34a for detection which is rotationally driven by. As the detector 34, a cutting edge detector may be installed instead of the cutoff sensor. In the case of a blade edge detector, a touch sensor is provided at the tip of the rotating arm 34a,
Detects 27 tools.

[0005]

With the above structure, the door pocket 30 for storing the slide door 25 is provided on the front surface of the drive mechanism cover portion 24.
Is provided, and even when the sliding door 25 is closed,
The side edge 25a overlaps a part of the drive mechanism cover 24. Therefore, when performing maintenance / inspection of the detector drive source 33, etc. located on the back side of the door bag 30, it is necessary to remove the door bag 30 and the sliding door 25, and then remove the front plate 24a of the drive mechanism cover part 24. There is. As described above, since it is necessary to remove the three members, there is a problem that maintenance and inspection work is troublesome. For ease of maintenance, the door pocket 30
However, in the case of such a configuration, it is difficult to obtain a reliable hermeticity with the slide door 25 that simply advances and retreats in a straight line, and the cutting fluid may leak.

An object of the present invention is to provide a slide door device for a machine tool which does not require a door pocket, can easily perform maintenance / inspection work in a drive mechanism section, and can surely seal a processing chamber. Is.

[0007]

A slide door device for a machine tool according to the present invention comprises a machine body cover composed of a drive mechanism cover portion and a processing chamber cover portion, and a slide door for closing an opening of the processing chamber cover portion. It A guide rail of a substantially S-shaped path that guides the slide door and moves slightly inward at the opening is provided from the outer position of the drive mechanism cover portion to the opening. In addition, the opening is provided with an opening frame that comes into close contact with the outer peripheral edge of the inner surface of the slide door that is moved inward.

[0008]

According to this structure, the slide door is guided by the substantially S-shaped guide rail, so that when the opening of the processing chamber cover is closed, the slide door moves inward and comes into close contact with the opening frame. Therefore, high sealing performance is obtained by the slide cover, and leakage of cutting fluid and the like is reliably prevented. Since the leakage of the cutting fluid is reliably prevented in this manner, the conventional door pocket is not required. Move the slide door to the closed position when performing maintenance / inspection of the equipment inside the drive mechanism cover. At this time, since the drive mechanism cover portion does not have a door pocket, the inside can be opened by simply removing a part of the face material forming the drive mechanism cover portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. 1 and 2 are a partially cutaway plan view and an external perspective view of a machine tool 1 to which the slide door device of this embodiment is applied. The machine tool 1 is a turret lathe, and its upper part is covered with a machine body cover 2. The machine body cover 2 includes a machining chamber cover portion 3 that covers the machining chamber 10 in which the spindle 8 and the turret 9 are arranged, and a driving mechanism cover portion 4 that covers the driving mechanism portion 11 in which the spindle head 8 and the turret carriage 9 are arranged. The processing chamber 10 and the drive mechanism section 11 are partitioned by the partition plate 2a.

A detector 20 having a rotary arm 20a is provided adjacent to the main shaft 9 on the partition plate 2a, and a drive source 15 for rotationally driving the rotary arm 20a is provided in the drive mechanism section 11. .. The detector 21 is composed of a cut-off sensor, and detects that the work of the main shaft 9 has been cut into a predetermined length by rotating the rotating arm 20a. The detector 21 may be a cutting edge detector. In the case of the blade edge detector, a touch sensor is provided at the tip of the rotating arm 20a, and wear of the tool or the like is detected by the presence or absence of contact of the tool when the turret 10 is sent to a predetermined position.

An opening 3a is formed on the front surface of the processing chamber cover portion 3.
Is formed, and the opening 3a is closed by the slide door 5. At the periphery of the opening 3a, an opening frame 6 for receiving the slide door 5 is provided in a state in which the opening 3a is slightly inward of the front surface of the processing chamber cover portion 3. The sliding door contact surface of the opening frame 6 is covered with a gasket (not shown) such as rubber.

A pair of guide rails 7a and 7b for guiding the slide door 5 are provided above and below the front surface of the machine body cover 2, respectively.
It is formed from the drive mechanism cover portion 4 to the upper and lower edges of the opening 3a of the processing chamber cover portion 3. These guide rails 7a and 7b have a step formed at the boundary between the processing chamber cover portion 3 and the drive mechanism cover portion 4, and are generally S-shaped paths in plan view. Engagement protrusions 8a and 8b are provided on the upper and lower sides of the inner surface of the slide door 5, and the engagement protrusions 8a and 8b are provided on the corresponding upper and lower guide rails 7a and 7b as shown in the longitudinal sectional view in FIG. Each is slidably engaged.

The operation of the above configuration will be described. As shown in FIGS. 1 and 3, when the opening 3a of the processing chamber cover portion 3 is closed by the slide door 5, the outer surface of the slide door 5 is flush with the front surface of the drive mechanism cover portion 4. Processing room 11
The inside of the slide door 5, and the inner surface of the slide door 5 has an opening frame 6
Close to. Therefore, the slide door 5 can reliably prevent a large amount of cutting oil or the like discharged to the workpiece or tool being cut from leaking out of the processing chamber 11 to the outside of the machine. In this way, the leakage of cutting fluid can be prevented without providing a conventional door pocket.

When opening the opening 3a of the processing chamber cover portion 3, the slide door 5 is pulled toward the drive mechanism cover portion 4 side. This allows the slide door 5 to move along the guide rails 7a and 7b.
Is guided as shown in FIG. 5 and moves to the front surface of the drive mechanism cover portion 4 as shown in FIGS. 2 and 3. At this time, since the engaging projections 8a and 8b of the slide door 5 pass through the stepped portions in the middle of the guide rails 7a and 7b, the slide door 5 is fitted to the inner surface side of the processing chamber cover portion 3 by this. It can float from the state to the outside and move to the front surface of the drive mechanism cover portion 4.

When the sliding door 5 is closed, the S-shaped guide rails 7a and 7b guide the sliding door 5 to move slightly inward from the sliding position in the substantially closed state, so that the opening frame 6 is opened. On the other hand, it will be closed by pressing. Therefore, as described above, the reliable closeness is obtained.

When performing maintenance and inspection of the drive mechanism section 12, the opening 3a of the processing chamber cover section 3 is closed by the slide door 5 as shown in FIG. The front plate 4a is removed. In this case, since there is no conventional door pocket, the drive mechanism section 12 can be opened only by removing one front plate 4a. Therefore, the maintenance / inspection work of the detector driving unit 15 and the like can be easily performed.

Although the above embodiment has been described for the case of being applied to a lathe, the present invention can be applied to machine tools in general.

[0018]

In the slide door device of the machine tool of the present invention, the slide door is guided by the substantially S-shaped guide rail so that the slide door is lifted up and down with respect to the opening frame of the processing chamber cover portion to be closed. High sealing performance can be obtained, and leakage of cutting fluid etc. can be reliably prevented. In addition, since the leakage of cutting fluid can be reliably prevented in this way, the conventional door bag is not required, and the cost can be reduced, and the door bag and slide door can be removed when performing maintenance and inspection inside the drive mechanism cover. It is no longer necessary, and you can perform internal maintenance and inspection simply by opening some components of the drive mechanism cover. for that reason,
Easy maintenance and inspection work.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing a closed state of a machine tool to which a slide door device according to an embodiment of the present invention is applied.

FIG. 2 is an external perspective view showing the opened state of the machine tool.

FIG. 3 is a partial vertical cross-sectional view showing an opened state of the machine tool.

FIG. 4 is an external perspective view showing a state in which the opening of the machine tool is closed.

FIG. 5 is a partially cutaway plan view showing the sliding door opening / closing operation of the machine tool.

FIG. 6 is an external perspective view of a machine tool to which a conventional slide door device is applied.

FIG. 7 is a partially cutaway plan view of the machine tool.

[Explanation of symbols]

1 ... Machine tool, 2 ... Machine cover, 3 ... Processing chamber cover,
3a ... opening, 4 ... driving mechanism cover, 5 ... slide door,
6 ... Opening frame, 7a, 7b ... Guide rail, 11 ... Processing chamber,
12 ... Drive mechanism

Claims (1)

[Claims] 1. A machine body cover comprising a drive mechanism cover portion and a processing chamber cover portion is provided with a slide door for closing an opening of the processing chamber cover portion, and the slide door is provided from an outside position of the drive mechanism cover portion to the opening. A slide door of a machine tool in which a guide rail having a substantially S-shaped path for guiding and moving slightly inward at the opening is provided, and an opening frame that is in close contact with the outer peripheral edge of the inner surface of the sliding door in the inward moving state is provided in the opening. apparatus.