JPH0226602Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a chip adhesion prevention cover device for vertical machine tools. This invention relates to a cover device for preventing chips from adhering to or clogging the bed at the lower end of a column of a machine tool in which the column supporting the head is upright.

[Conventional technology]

Vertical machine tools, such as vertical machining centers and vertical milling machines, have an upright column that supports the spindle head, and chips may scatter on the bed and accumulate or adhere to the sliding part of the saddle at the base end of the column. In order to prevent this from happening, a cover is usually installed between the saddle and the column, which is made of a plurality of elastic steel plates joined in a bellows shape. However, it is not uncommon for a cover with such a bellows-like joint structure to cause problems such as chip clogging or damage to the joint, and furthermore, the large number of parts that make up the cover makes assembly and assembly difficult. There are also inherent disadvantages such as requiring a great deal of labor for adjustment work and increasing the production cost of the chip adhesion prevention cover. There is also a device in which a sheet-like dustproof cover is stretched between the upper end of the column and the saddle using a winding device, but the structure is complicated and the winding device is easily damaged during operation. Maintenance is time-consuming.

[The problem that the idea aims to solve]

The main purpose of this invention is to have a simple structure that can solve the above-mentioned problems found in conventional cover devices for preventing the adhesion of chips for vertical machine tools, and to improve the function of preventing adhesion of chips. The object of the present invention is to provide a cover device with improved performance.

The other main purpose of this invention is to make the front of the column
It is an object of the present invention to provide a chip adhesion prevention cover device for a vertical machine tool which is configured to be covered with a cover made of a single seamless plate-like member that can swing.

[Means to solve the problem]

In view of this purpose, the present invention is a cover device for preventing chips from adhering to or clogging the sliding portion of the saddle at the lower end of the column of a vertical machine tool, and the present invention is a cover device for preventing chips from adhering to or clogging the sliding portion of the saddle at the lower end of the column of a vertical machine tool. a guide rail 4 fixed vertically on the front surface of the bed, an upper movable member 5 slidably engaged with the guide rail 4, and a lower movable member provided on the saddle 1 that moves horizontally on the bed 11. 6, and the vertically movable members 5, 6
The length of the plate member 3 is determined by the length of the upper movable member 5 when the saddle 1 is located at the base end of the column 2. The gist of this invention is a chip adhesion prevention cover device for a vertical machine tool, which is characterized by having a length that is located at the top end of a guide rail 4.

〔Example〕

FIG. 1 is a partially cutaway side view of a vertical machine tool illustrating the overall structure of the device of the present invention. As shown in the figure, a guide rail 4 is disposed on the front surface of a column 2 of a vertical machine tool, such as a vertical milling machine, and is oriented in the vertical direction over substantially the entire length of the column. In the illustrated embodiment, the guide rail 4 is
Two Is arranged oppositely on both sides of column 2 in the width direction
Although the rail is illustrated as a shaped steel rail, any material other than I-shaped steel may be used as long as it allows the upper movable member 5 (described later) to move in the vertical direction while sliding or rotating, that is, to move along the height direction of the column 2. Any material and structure may be employed. for example,
A second cover may be added as an auxiliary component to the guide rail 4, which partially covers the lower front end of the column 2, which is particularly prone to clogging with chips. The cover device 3 includes an upper movable member 5 that slidably engages with the guide rail 4, a lower movable member 6 integrally joined to the saddle 1 via a hinge 12, and a lower end of the column 2. It is also formed from a single-piece plate member 7 that covers the surface. In this embodiment, the upper movable member 5 includes a roller mechanism 8 that moves up and down along the height direction of the column 2 while sandwiching the guide rail 4, and the roller mechanism is screwed to the plate member 7. Bracket 9 for, as well as column 2
An elastically deformable rubber plate 1 for sealing a gap formed between the upper end of the plate member 7 and the column 2 when the roller mechanism 8 moves up and down along the height direction of the column 2.
0, and the lower movable member 6 is
It consists of a hinge 12 that connects the lower end of the plate member 7 and the saddle 1 in a variable inclination angle. Further, the plate-like member 7, which is provided with a folded green 7' for preventing the scattering of chips, over the entire length in the height direction, has its upper edge movable by a known fixing means such as screwing or welding. It is fixed to the member 5 and cooperates with a hinged lower movable member 6 to form a unitary cover that covers the lower end and surface of the column 2.
The plate member 7 can be manufactured, for example, by bending or punching a thin rolled steel plate.

Since the device of the present invention has the above-described structure, the lower movable member 6 is moved to the saddle 1 while the sealing rubber plate 10 seals the gap formed between the upper end of the plate member 7 and the column 2. By simultaneously moving the upper movable member 5 in the horizontal direction, the upper movable member 5 is caused to move in the vertical direction along the guide rail 4. The vertical movement of the upper movable member 5 and the horizontal movement of the lower movable member 6 cause the inclination angle of the plate member 7, which is integrally structured with these movable members, to change over time as shown by the two-dot chain line in the figure. Generates a varying rocking motion. Since the vertical movement of the upper movable member 5 and the horizontal movement of the lower movable member 6 can be freely linked according to the machining conditions of the workpiece,
Almost the entire lower end of the column 2 is covered with a plate-like member 7. Therefore, good operating conditions are ensured in which the lower end of the column 2 and the movable parts of the machine tool, such as the sliding surface of the saddle near the column of the bed 11, are free from clogging or accumulation of chips.

[Effect of idea]

As can be understood from the above explanation, since the main body of the chip-adhering cover according to the present invention is formed of a seamless steel plate, etc., chips may not get caught in the joint. There is no risk of damage due to contact, and stable operating conditions can be guaranteed for the moving parts of the machine tool. Furthermore, since the device of this invention has a significantly reduced number of parts compared to conventional cover devices for preventing adhesion of chips, assembly and adjustment work is easy, contributing to improved productivity. There is something very big. Further, since the cover body is formed of a smooth seamless steel plate, etc., a remarkable effect is recognized in facilitating the slipping of chips to the chip discharging device.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a machine tool illustrating the device of the present invention. 1...saddle, 2...column, 3...cover,
4... Guide rail, 5... Upper movable member, 6...
...Lower movable member, 7...Plate member.

Claims (1)

[Scope of Claim for Utility Model Registration] A cover device for preventing chips from adhering to or clogging the sliding surface of a saddle at the lower end of a column of a vertical machine tool, which covers the front surface of the column. a guide rail fixedly installed along the vertical direction; an upper movable member slidably engaged with the guide rail; a lower movable member provided on the saddle that moves horizontally on the bed; and the vertically movable member. It consists of a single-piece plate-like member whose both ends are rotatably pivoted, and the length of the plate-like member is such that when the saddle is located at the base end of the column, the upper movable member is at the top end of the guide rail. A chip adhesion prevention cover device for a vertical machine tool, which is characterized by having a length that allows it to be positioned.