KR20200032425A - Apparatus for manufacturing outer ring of bearing - Google Patents

Abstract

The present invention proposes a dedicated processing device capable of sequentially performing horizontal and vertical holes of a bearing outer ring in one device. The bearing outer ring processing apparatus of the present invention includes a bed 2, a horizontal unit 20, and a vertical unit 40. The horizontal unit 20 is installed to be able to linearly move in the horizontal direction by a ball screw on the bed, and has horizontal spindles 22 for mounting a tool for forming horizontal holes in the horizontal direction on the bearing outer ring. The vertical unit 40, the vertical column 42 is installed to be able to move linearly in the horizontal direction by a ball screw on the bed, and vertically movable by a ball screw relative to the vertical column, the vertical hole in the bearing outer ring It has a vertical head (46) having a vertical spindle (48) to install a tool for forming a. And on the bed, a centering device capable of accurately setting the outer ring of the bearing to a centered state is installed.

Description

Apparatus for manufacturing outer ring of bearing

The present invention relates to an outer ring processing device for a bearing, and more particularly, to an outer ring processing device for a bearing that is configured to perform the entire processing of the outer ring of a bearing in which a plurality of balls must be embedded between the inner ring and the inner ring.

Since a large number of balls are interposed between the inner ring and the outer ring of the bearing, it is an element that can rotate while maintaining rolling contact without generating friction between the two. In order to complete assembly by putting a plurality of balls between the inner ring and the outer ring in such a bearing, a predetermined processing must be performed on the outer ring.

The processing of the outer ring includes processing such that a plurality of balls can be inserted between the inner ring and, for example, forming a horizontal hole and a vertical hole in the outer ring. Conventional processing methods for forming these horizontal holes and vertical holes include structural problems in which productivity is low because each is processed through separate equipment.

An object of the present invention is to provide an outer ring processing apparatus for a bearing capable of performing all processing on the outer ring of a bearing placed on one table.

Another object of the present invention is to provide an outer ring processing apparatus for a bearing having a centering device capable of accurately setting an outer ring having various diameters.

Bearing outer ring processing apparatus of the present invention includes: a bed; A horizontal unit installed horizontally by a ball screw on a bed to be linearly movable, and having horizontal spindles for mounting a tool for forming horizontal holes in the horizontal direction on the bearing outer ring; On the bed, a vertical column installed to be able to linearly move in the horizontal direction by a ball screw, and vertically movable by a ball screw with respect to the vertical column, and installed a tool for forming a vertical hole in the vertical direction on the bearing outer ring A vertical unit having a vertical head in which vertical spindles are installed; And it is installed on the bed, it is composed of a centering means that can set the outer ring accurately in the centered state.

According to an embodiment of the centering means of the present invention, a plurality of sets of reference pins composed of a pair contacting the inner surface of the outer ring placed on the table, and along the portion corresponding to the diameter of the outer ring at the center of the reference pin It is composed of a working arm formed with a plurality of mounting holes and a hydraulic cylinder capable of linearly moving the working arm in a radial direction, and a centering bearing installed on the working arm to contact the inner surface of the outer ring.

According to another embodiment of the present invention, in order to press the taper pin inserted into the vertical hole of the outer ring, it may be configured to further include an air cylinder installed in the vertical head.

According to another embodiment of the present invention, the horizontal unit is mounted at the tip of the horizontal spindle, and a horizontal tool magazine in which a plurality of tools for processing a horizontal hole is embedded, and a specific tool is taken out of the horizontal tool magazine, leading to the horizontal spindle tip. It further includes a horizontal ATC to mount on. And the vertical unit is mounted on the tip of the vertical spindle, a number of tools for processing vertical holes are built in, and a vertical tool magazine installed in the vertical head and a vertical tool magazine take out a specific tool and mount it on the horizontal spindle tip. It further includes ATC.

It can be seen that the bearing outer ring processing apparatus of the present invention having such a configuration can sequentially form a horizontal hole using a horizontal unit and a vertical hole using a vertical unit with respect to an outer ring placed on one table. That is, it can be seen that there is a convenience in that the bearing outer ring processing can be sequentially performed on a single date and time in one dedicated machine.

It is expected that anyone who can easily understand that such a convenience can be effectively performed in a mass production, so that not only the production cost can be reduced, but also the reliability of the product can be sufficiently improved. In addition, since the vertical unit and the horizontal unit can be relatively close to each other or spaced apart, the operation of each unit can be performed accurately without interference.

In addition, according to the present invention, it can be seen that, by the centering device installed on the table, the raised outer ring can be installed with the correct center in one operation. Therefore, the user can be installed so that the setting of the outer ring is the most simple and highly reliable, and is expected to be more effective in improving productivity.

1 is an exemplary front view of a processing apparatus of the present invention.
Figure 2 is an exemplary plan view of the processing apparatus of the present invention.
3 is an exemplary right side view of the processing apparatus of the present invention.
4 is a plan view for explaining the centering device of the processing apparatus of the present invention.
Figure 5 is an explanatory diagram illustrating the movement of the robot of the present invention processing apparatus.

Hereinafter will be described in more detail with respect to the present invention based on the embodiment shown in the drawings. In the embodiment illustrated in the drawings, a part of each is omitted for convenience of explanation and illustration. For example, in FIG. 1, a detailed illustration of the vertical unit is omitted, and the drawings to be referred to are referred to in advance for each unit. I will do it.

First, as shown in FIG. 1, in the present invention, a table 10 for placing a workpiece (outer ring of a bearing) and a horizontal unit 20 for forming a hole in a horizontal direction on the outer ring raised on the table 10 It contains. The table 10 and the horizontal unit 20 are installed on the bed 2.

The centering device for accurately setting the outer ring of the bearing on the table 10 will be described with reference to FIG. 4. According to the present invention, all of the outer rings Ba, Bb, Bc having various dimensions can be set on the table 10 so as to have an accurate center. In the centering device, a plurality of pairs of reference pins 18a and 18b are installed. For example, for a large diameter outer ring, the first reference pins 18a and 18b are for an outer ring having a medium diameter. The second reference pins 16a and 16b are installed. The reference pins 18a and 18b should be installed symmetrically with respect to the center of the table.

These reference pins are for setting the outer ring of the bearing to the correct position, and to accurately set all the outer rings of various sizes. A working arm 17 is installed at a portion corresponding to the diameter of the outer ring around the reference pins 18a and 18b, and the working arm 17 is a predetermined distance in the radial direction of the outer ring by the hydraulic cylinder 12. A linear reciprocating motion is possible within the range. A plurality of mounting holes 17 are formed on the operating arm 17, and a centering bearing 14 is installed in the mounting holes 17.

A number of mounting holes 17 are actually molded to correspond to various diameter outer rings. And as shown in Figure 4, the outer ring (Ba, Bb, Bc) having a specific diameter is raised with the reference pin (18a, 18b or 16a, 16b) inside, by the operation of the hydraulic cylinder (12) When the centering bearing 14 moves outward, the outer rings Ba, Bb, Bc are accurately supported on the table 10 on the center line by a pair of reference pins 18a, 18b and one centering bearing 14. You can.

It can be said that the setting of the outer ring substantially determines the exact position of the horizontal hole formed by the horizontal unit 20. Here, the centering bearing 14 can accurately set the outer ring on the table 10 without friction according to the rolling contact, because the bearing installed on the upper side contacts the inner surface of the outer ring.

A horizontal hole is first machined in the outer ring (Ba), which is correctly set as described above. Referring to FIG. 1 again, the horizontal hole is processed by the horizontal unit 20. The horizontal unit 20 installed on the bed 2 is to perform a linear reciprocating motion in the horizontal direction (left and right direction in FIG. 1) by the ball screw 26 operated by the drive motor 24. This linear motion is guided by a horizontal LM guide (LMa). And the horizontal spindle 22 of the horizontal unit 20 faces the outer ring Ba, and clamps a tool necessary for forming the horizontal hole to form a horizontal hole in the outer ring Ba by a built-in motor. Is done.

When a hole in the horizontal direction is created in the outer ring Ba in this way, the main operation related to the horizontal unit 20 is performed by performing a finishing process by boring of the horizontal hole, and then pushing the plug into the horizontal hole. It is completed. 5, the robot RBT illustratively shows the operation of catching the plug P and inserting it into the horizontal hole. However, the operation of such a robot (RBT) is exemplary, and it is natural that various types of robots can be implemented.

Here, the tool for boring is set in the tool magazine 27, and a number of these tools are held by a horizontal automatic tool changer (ATC) 29 and clamped to the horizontal spindle 22. The configuration of the tool magazine 27 and the horizontal ATC 29 itself is well known and widely used, so a detailed description thereof will be omitted. And the above-mentioned plug is loaded on the plug station PS, and is gripped by a robot RBT (see FIG. 2) and inserted into a horizontal hole.

When the molding of the horizontal hole is completed through this process, the molding of the vertical hole starts next. It is made by a vertical unit 40 for forming a vertical hole. In FIG. 1, the illustration of the vertical unit 40 is omitted, and is illustrated in FIGS. 2 and 3. 2 and 3, the vertical unit 40 is installed vertically on the bed 2 and is in a direction of entering or exiting relative to the ground based on FIG. 3 as shown in FIG. It includes a vertical column 42, which is installed to enable linear motion in a certain section.

As described above, compared to that the horizontal unit 20 can be moved in the left-right direction in the direction of the arrow in FIG. 1 by the ball screw 26, the entire vertical unit 40 by the vertical column 42, the bed (2) On the same direction as the horizontal unit 20 (but in a different position, centered on the drawing, behind the table 10), it is installed so as to be able to move linearly for a certain section. The movement of the vertical column 42 is performed by the ball screw 41, and at this time, the linear movement is performed by the LM guide LMb.

That is, the vertical column 42 is movable in the left and right directions of FIG. 2 by the ball screw 41 as shown in FIG. 3. And it is evacuated so as not to interfere with each other. When the horizontal unit 20 is working, the vertical column 42 moves, and when the vertical unit 40 is working, the horizontal unit 20 is moved, causing interference with each other. It is not to be.

And the vertical unit 40 includes a vertical head 46 supported on the vertical column 42, the vertical head 46 is provided with a vertical spindle (48). The vertical spindle 48 is equipped with a tool for machining a vertical hole, etc., and processes a vertical hole in the outer ring Ba with power transmitted from the spindle motor 48a. The vertical head 46 supporting the vertical spindle 48 is provided to be movable in the vertical direction by the ball screw 44 with respect to the horizontal column 42. The ball screw 44 is driven by power by the drive motor 43.

When the vertical hole is processed in this way, the tool is continuously changed to the vertical spindle 48 to perform reaming and taper processing. Here, the tool for reaming and taper work is mounted on the vertical spindle 48 by clamping the vertical ATC 49 installed in the vertical head 46 in a vertical tool magazine (not shown). ATC and the tool magazine itself can be said to be widely used as mentioned above.

In this way, when the taper processing is completed in the vertical hole, the operation of inserting the taper pin (not shown) into the vertical hole is performed next. The insertion of the taper pin into the vertical hole is made by the robot RBT as shown in FIG. 2 clamping and taking out the taper pin from the taper pin station TS and then inserting it into the vertical hole of the outer ring Ba. And it can be said that the operation of the robot to take the taper pin out of the magazine and insert it into the vertical hole is substantially the same as that illustrated in FIG. 5.

When the taper pin is inserted into the vertical hole of the outer ring Ba in this way, the taper pin must be completely inserted into the vertical hole. Although this operation is omitted, it is performed by the air cylinder installed in the vertical head 46. do. At this time, the vertical column 42 is slightly moved by the ball screw 41 in order to match the tapered pin (or the position of the vertical hole) with the center of the operating shaft of the air cylinder.

It can be seen that the movement of the vertical column 42 or the vertical unit 40 may occur when the air cylinder is driven to avoid interference with the horizontal unit 20 and to insert the tapered pin into the vertical hole. And the robot (RBT) used in the present invention is also the same as described above that is to take out the corresponding elements from the taper pin station (TS) and the plug station (PS), and insert it into the hole formed in the outer ring.

Other modifications are possible to those skilled in the art within the technical scope of the present invention as described above, and of course, the protection scope of the present invention should be interpreted based on the description in the claims. It can be said for granted.

2 ..... Bed
10 ..... table
14 ..... Centering bearing
17 ..... Operating arm
20 ..... Horizontal unit
22 ..... Horizontal spindle
24 ..... motor
26 ..... Ball bearing
40 ..... Vertical Unit
41 ..... Ball bearing
42 ..... Vertical Column
44 ..... Ball screw
46 ..... Vertical head
48 ..... Vertical spindle

Claims (4)

Bed and;
A horizontal unit installed horizontally by a ball screw on a bed to be linearly movable, and having horizontal spindles for mounting a tool for forming horizontal holes in the horizontal direction on the bearing outer ring;
On the bed, a vertical column installed to be able to linearly move in the horizontal direction by a ball screw, and vertically movable by a ball screw with respect to the vertical column, and installed a tool for forming a vertical hole in the vertical direction on the bearing outer ring A vertical unit having a vertical head supporting vertical spindles; And
The outer ring processing device of the bearing, which is installed on the bed and is composed of a centering means capable of accurately setting the outer ring in a centered state.
According to claim 1,
The centering means, a plurality of sets of reference pins composed of a pair contacting the inner surface of the outer ring placed on the table, and a plurality of mounting holes are formed along a portion corresponding to the diameter of the outer ring at the center of the reference pin Outer ring processing device of the bearing consisting of a working arm, a hydraulic cylinder capable of linearly moving the working arm in the radial direction, and a centering bearing installed on the working arm to contact the inner surface of the outer ring.
According to claim 1,
In order to press the taper pin inserted in the vertical hole of the outer ring, the outer ring processing device of the bearing further comprises an air cylinder installed in the vertical head.
According to claim 1,
The horizontal unit further includes a horizontal tool magazine mounted on the tip of the horizontal spindle and having a plurality of tools for processing horizontal holes, and a horizontal ATC for taking out a specific tool from the horizontal tool magazine and mounting it on the tip of the horizontal spindle;
The vertical unit is mounted on the tip of the vertical spindle, a number of tools for processing vertical holes are built in, and a vertical tool magazine installed in the vertical head and a vertical ATC that takes out a specific tool from the vertical tool magazine and mounts it on the tip of the horizontal spindle. Outer ring processing device of the bearing further comprises a.

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