JP3074477U - Machine Tools - Google Patents

Abstract

(57) [Problem] To provide an improved machine tool which does not have a drawback such as dropping chips in a known machine to a sliding track. The machine tool (1) contains a spindle (4) suspended by sliding means (401, 400, 402) on a gantry part, here a single horizontal support beam of the machine. This arrangement can make it possible to form a machining space (2) in which the chips are generated, wherein the chips fall into a part of the machine suitable for the dust treatment. In this way, chips are prevented from falling on the sliding means (401, 402) of the spindle without special cleaning means having to be provided on said sliding means.

Description

[Detailed description of the invention]

[0001]

The invention relates to the field of machine tools provided with at least one workpiece spindle or tool holding spindle, in particular the ability to move the spindle along at least one axis of the machine tool. The present invention relates to a device for arranging sliding means.

[0002]

2. Description of the Related Art Conventionally manufactured machine tools include one gantry that constitutes a machine base on which one or a plurality of sliding trajectories are horizontally arranged. At least one carriage with a trolley that can move up can be supported. The carriage can directly support the workpiece spindle or the tool holding spindle or the spindle can be supported by a second set of slideways / slides, so that the spindle has an additional axis of motion.

[0003] A significant disadvantage of conventionally manufactured machine tools is that the shaping of the workpiece in a machining space extending over at least a portion of at least one of the sliding tracks causes the chips to be removed by the sliding tracks. It is to imitate dropping in this part. In order to keep the sliding track for regular and accurate movement of the spindle clean, special means for cleaning the sliding track must be provided, for example, scraping, cleaning or air or oil injection. These measures are expensive and hardly practical. According to another possibility, a flexible or insertable covering capacity can be provided on the sliding track in order to avoid the chips reaching the sliding track. As before, these measures are expensive and hardly practical, and they limit the speed of movement of the spindle as well as the possible acceleration.

Another possibility of avoiding these drawbacks is to arrange the sliding track on an inclined or vertical plane so that the chips can be easily dusted off by gravity. The disadvantage of this structure is that gravity affecting the carriage or spindle must be compensated for, which requires at least one powerful motor to drive the axis under gravity control. On the other hand, this arrangement cannot use linear motors for axes under gravity control. Because this will occur on the workpiece or the spindle on the tool in the event of a power failure, specific safety measures have been taken to prevent these additional disadvantages.

[0005]

SUMMARY OF THE INVENTION Therefore, a first object of the present invention is to propose an improved machine tool which does not have the above-mentioned disadvantages of known machines.

A second object of the invention is to propose a machine tool in which the configuration of the machine tool prevents the problem of the presence of chips falling on the sliding track.

[0007] Another object of the invention is to propose that the spindle mounted on the machine tool can be moved at high speed and with more severe acceleration.

Another object of the invention is that gravity must be taken into account for the drive means for moving the spindle mounted on the machine tool, and in particular that a linear motor can be used simply for this purpose. It is to propose.

Another aim of the invention is to propose that the proposed improvement can be integrated into each type of machine tool.

[0010]

[Means for Solving the Problems]

 According to the invention, these objects of the invention are such that a gantry with at least one fixed table with at least one tool or at least one workpiece and at least one gantry of the machine by means of sliding means. A machine tool comprising at least one spindle, a workpiece spindle or a tool holding spindle suitable for being moved by a drive means along at least one axis. This is achieved as described above by a machine tool as claimed in claim 1, which is mounted on at least one plane, or by a machining center as claimed in claim 9. Modifications or specific embodiments are described in the dependent claims.

[0011]

Embodiment

 Specific embodiments of this invention are described in further detail below. This detailed description should be observed in connection with the accompanying drawings. FIG. 1 is a front view of the machine tool according to the present invention, and FIG. 2 is a longitudinal sectional view taken along line II-II of FIG.

The machine tool 1, schematically illustrated here by a horizontal rotating machine, comprises a gantry 10 forming a gantry with two columns 11 and 12 mounted on two opposing sides of the machine. contains. The horizontal support beam 13 is supported at its two ends on the upper parts of the columns 11 and 12. The horizontal support beam 13, the two columns 11 and 12 and the upper part 100 of the gantry 10 form a frame surrounding the working space 2.

FIG. 2 shows that the upper part 100 of the gantry 10 is moved to the front of the machine with respect to the columns 11 and 12 and the horizontal support beams 13. In conventional technology, a fixed table 101 is mounted on the upper part 100 of the gantry 10 in order to be able to receive one or more tools 3.

The figure shows a workpiece spindle 4 suitable for moving a workpiece 40 facing one or more tools 3. The workpiece spindle 4 has an absolute standard structure, except that the spindle 4 is suspended by a first set of sliding tracks / slides 401 on a slider carriage 400, wherein the slider carriage 400 itself is Are suspended on a horizontal support beam 13 by a second set of sliding tracks / slides 402. In the illustrated example of a machine, the workpiece spindle is moved along a Y-axis (see FIG. 1) by a second set of slideways / slides 402 and by a first set of slideways / slides 401. Suitable to be moved along the X axis (see FIG. 2). Driving means along these two axes are known, so they are not shown in the drawings.

Therefore, since the workpiece spindle 4 is suspended on the horizontal support beam 13 by its sliding track or slide, chips generated in the machining space 2 do not fall on the sliding track, and Clearly, movement is not hindered. Conversely, the swarf falls by gravity onto the stationary part of the machine, for example from the gantry 10 onto an inclined thin plate 103, which further swarfes the swarf out of the machine by gravity.

In the face of the fact that the resulting swarf does not fall on any part of the sliding track, it is necessary to provide a flexible or insertable covering possibility which can limit the high speed or high acceleration movement of the spindle. ,unnecessary.

[0017] The cleaning and maintenance costs of the machine are simplified by the fact that the chips never fall on the moving parts of the machine, but rather can be easily captured by gravity by some removal means.

The two sets of slide tracks / sliders 401 and 402 are designed so that they can hold the spindle 4 as well as the slider carriage 400 floating. According to a preferred embodiment, a ball chain or a roller chain is used as a sliding track / slide, with two oppositely acting loads, such as a load or a spindle as in the present application. It is suitable for applying an applied load as in a conventional machine tool mounted on a machine. The use of at least a portion of the horizontal support beam 13, the slide track / slide 402, the slide carriage 400, the slide, by using a slide track / slide suitable for supporting loads along two opposite directions. A unit consisting of a dynamic orbit / slide 401 and a spindle 4 can be constructed, in which case the unit is mounted on a floating spindle 4 as in the present application or on a sliding orbit as in a conventional machine tool. It has a spindle.

[0019] Another type of sliding track / slide or sliding means can obviously be used as long as it allows the spindle to be hung on the sliding track / slide or sliding means.

The movement of the spindle 4 along the two axes X and Z is now achieved by the prior art vertically overlaid slide track / slider 401 and 402 pairs. The means for moving the spindle 4 is provided as described in commonly assigned European Patent Application No. 98810673.8. This means of movement of the spindle 4 in any direction along the plane surrounding the two axes X and Z comprises a first slider carriage adapted to be drawn along a first of said two orthogonal axes; A second slider carriage adapted to be driven along the same first axis of the two orthogonal axes, wherein the spindle is a first sliding means relative to the first slider carriage. And a second sliding means with respect to the second sliding carriage, wherein at least one of the sliding means is along the third axis by 90 degrees with respect to the first orthogonal axis. It is arranged at a displaced angle, in which case the third axis is in the same plane as the two orthogonal axes. Such an arrangement has the advantage that the manufacture of the device for moving the spindle 4 along the X and Y axes is more compact, since the movement control is exerted on only one of said axes.

The movement of the spindle 4 of the described embodiment in one horizontal plane (X and Y axis) is such that the drive means is such that the gravity is correct and in particular the mass of the spindle 4 to be supported. This means that there is no need to particularly determine the dimensions. Thus, the spindle 4 can be moved at a high speed and at a high acceleration. One or more linear motors can be used simply to control the movement of the spindle 4 along one of the two X and Y axes. Unlike certain known machine tools, there is no need to take special safety measures to prevent gravity-driven spindle movement along one axis.

The condition that the spindle moves in only one horizontal plane is not necessary at all for the first desired effect, which is free of sliding rails with chips. However, in practice, the mounting of the sliding means on the inclined plane will have the same effect on the upper part of the spindle, with the considerable disadvantages mentioned above, which also relate to the drive of the spindle.

In the spindle 4 described here, the workpiece spindle is important, but it is clear that a tool-holding spindle mounted on the machine as described gives similar results. Such a tool holding spindle can likewise be mounted on other types of machine tools than described here, ie on a horizontal rotating machine; in fact, it is hung on its sliding rail. The spindle principle can be used for all types of machine tools.

A work station surrounding a number of work spindles and / or tool holding spindles has the advantage, as mentioned above, of having at least one spindle suspended on a sliding rail.

[0025]

[Effect of the invention]

 According to the configuration of the machine tool according to the present invention, the chips can be easily dusted by gravity, the chips do not fall on any part of the sliding track, and the spindle can be moved at a high speed and with a high acceleration. Alternatively, it has an insertable shroud capability, which allows the chips to be easily captured by gravity-based removal means, reducing machine cleaning and maintenance costs and preventing gravity-driven spindle movement along one axis. There is no need to take special safety measures.

[Brief description of the drawings]

FIG. 1 is a front view of a machine tool according to the present invention.

FIG. 2 is a longitudinal sectional view taken along line II-II of FIG.

[Explanation of symbols]

 1. . . . Machine tools 2. . . . Processing space 3. . . . Tools 4. . . . Spindle 10. . . Mount 11. . . Prop 12. . . Prop 13. . . Horizontal support beam 40. . . Workpiece spindle 100. . Top part of gantry 101. . Fixed table 103. . Inclined part for dust treatment 400. . Slider carriage 401. . Sliding track / slide 402. . Sliding track / slide

Claims (9)

[Utility model registration claims] At least one fixed tool having at least one tool (3) or at least one workpiece.
Pedestal (10) equipped with a bull (101) and sliding means (401, 40)
0,402), at least one spindle (4) suitable for being moved by a drive means along at least one axis (X, Y) relative to the machine platform (10), the workpiece spindle (40). ) Or a tool holding spindle, wherein the sliding means (401, 400, 402) is mounted on at least one plane above the spindle (4). 2. The sliding means (401, 400, 402) is fixed to a part (13) of a base of a machine tool and comprises a spindle
The machine tool according to claim 1, wherein (4) is suspended from another portion of the sliding means. 3. A part of the gantry to which the sliding means (401, 400, 402) is fixed comprises at least one support beam (13) leaning on at least one support (11, 12). The machine tool according to claim 1 or 2. 4. The machine tool according to claim 1, wherein all of the sliding means (401, 400, 402) are arranged in at least one horizontal plane. 5. The machine tool according to claim 1, wherein the drive means for moving the spindle is selected to drive the spindle only in one horizontal plane. 6. A machine tool according to claim 5, wherein the drive means for moving the spindle along at least one axis (X, Y) comprises one linear motor. 7. The machining space (2) is arranged below the spindle (4), and the chips generated in the workplace fall by gravity onto the part of the machine provided for the treatment of said chips, especially dust. The machine tool according to any one of claims 1 to 6, wherein: 8. A part of a machine tool in which a single spindle, a workpiece spindle or a sliding means (401, 400, 402) of a tool holding spindle is fixed to a part of a support beam (13). Can be assembled on a machine tool of the type with a spindle (4) mounted below the sliding means (401,400,402) or on a machine tool of the type with a spindle (4) supported on the sliding means (401,400,402) A machine tool characterized in that it is suitable for being provided in a machine. 9. A machining center comprising at least one machine tool according to claim 1.