JP2008272840A - Cover structure for superfinishing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover structure for superfinishing machine capable of operating the superfinishing machine stably by preventing cutting fluid from scattering up to a region other than a machining work region to superfinish a workpiece accurately and reducing the cost required for superfinishing by simplifying the maintenance work. <P>SOLUTION: This cover structure is used for the superfinishing machine for superfinishing the workpiece while pouring the predetermined cutting fluid on the workpiece W set in the machining work region F1 and is provided with a screen assembly 12 for preventing the cutting fluid from scattering up to the region other than the machining work region. The superfinishing machine is provided with an oscillating unit 2 for superfinishing the workpiece by controlling vertical and lateral moving of a grinding wheel Gs along the workpiece set in the machining work region. In this case, the screen assembly is provided between the machining work region and the oscillating unit to cover the machining work region. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cover structure used for a superfinishing machine for superfinishing a workpiece (workpiece).

  2. Description of the Related Art Conventionally, for example, various processing apparatuses that perform finish processing on a workpiece, such as a polishing apparatus disclosed in Patent Document 1, are known. As an example of a processing device, in the field of bearing manufacturing, for example, while rotating a workpiece set in a processing work area, super finishing processing is performed on the workpiece (for example, a processing portion such as a peripheral surface of inner and outer rings or a surface of a rolling element). A super finishing board is used. Here, in the super finishing machine, for the cooling of the work (working part), lubrication, or removal of chips (abrasive grains), for example, super finishing processing is performed on the work (working part) while applying cutting fluid such as oil or water. Has been done. In this case, a cover is generally provided around the workpiece (processing part).

  By the way, in the conventional super finishing board, since the cover is locally disposed only around the workpiece (processing part), depending on the rotation state (for example, rotational speed, acceleration) of the workpiece (working part) In some cases, the cutting fluid bounced over the cover beyond the cover may scatter to other machine parts (machine parts constituting the super finishing board) other than the machining work area. In this case, the scattered cutting fluid includes, for example, chips generated during superfinishing and dropped abrasive grains, and if this scatters on a machine part, it affects the operation control of the machine part. There is a case.

  For example, if the fallen abrasive grains scattered enter the sliding part of the rocking unit (the machine part that rocks the grindstone), this will cause wear or wear of the sliding part, causing the grindstone to move along the workpiece (working site). It becomes difficult to swing with high accuracy. If this happens, the superfinishing board cannot be operated stably, and as a result, there is a possibility that the workpiece (machined part) cannot be precisely superfinished to a preset size or shape.

In addition, if the cutting fluid containing falling abrasive grains adheres to the machine part, the surface of the machine part becomes sticky due to the viscosity of the cutting fluid, which makes it difficult to perform maintenance and inspection work (maintenance work) on the machine part. . In this case, since labor and time required for maintenance and inspection work are required, the work cost is increased, and as a result, the cost required for superfinishing is significantly increased.
Japanese Patent Laid-Open No. 9-193012

  The present invention has been made to solve such a problem, and its purpose is to reliably prevent the cutting fluid from splashing outside the machining work area, thereby allowing the super finishing board to operate stably and the work to be performed. An object of the present invention is to provide a cover structure for a super finishing board capable of accurately performing super finishing and simplifying maintenance work to reduce the cost required for super finishing.

  In order to achieve this object, the present invention is a cover structure used in a super finishing machine that applies super finishing to a work set in a work work area while applying a predetermined cutting fluid. In addition, a partition assembly that prevents the cutting fluid from splashing outside the processing work area is provided. In addition, the super finishing machine is equipped with a rocking unit that performs super finishing on the workpiece by controlling the rocking of the grindstone along the workpiece set in the machining work area. It is interposed between the machining work area and the swing unit so as to cover the work area.

  In the present invention, the oscillating unit includes an oscillating spindle that oscillates the grindstone, and the oscillating spindle extends toward the machining work area. The partition assembly includes the machining work area and the oscillating unit. A partition plate, an opening formed in the partition plate, and a slide plate disposed so as to be movable up and down and left and right along the partition plate so as to cover the entire opening. A swing spindle extending from the swing unit beyond the opening of the partition plate is connected to the slide plate.

  In the present invention, the partition plate has a unit side surface facing the swing unit and a processing side surface facing the processing work area, and the slide plate can be moved vertically and horizontally along the processing side surface. Has been placed. The partition assembly is provided with a guide member for guiding the slide plate along the partition plate. In this case, the guide member is disposed on the processing side surface of the partition plate so as to cover a part of the slide plate.

  According to the super finishing board cover structure of the present invention, it is possible to reliably prevent the cutting fluid from splashing outside the processing work area, so that the super finishing machine can be stably operated to accurately superfinish the workpiece. In addition, it is possible to simplify the maintenance work and reduce the cost required for super-finishing.

Hereinafter, a cover structure for a super finishing board according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 (a) schematically shows the configuration of a super finishing machine to which the cover structure of the present embodiment is applied. The super finishing machine has a workpiece W set in the machining work area F1. Superfinishing is performed on the workpiece W while a predetermined cutting fluid (for example, oil or water) is applied to the workpiece W. The super finishing board includes a rocking unit 2 for performing super finishing on the workpiece W by swinging and controlling the grindstone Gs along the workpiece W.

  The rocking unit 2 includes a rocking spindle 4 having a mechanism for sliding the grindstone Gs in the directions of arrows α and β (directions orthogonal to each other), and a guide mechanism 6 for sliding the rocking spindle 4 vertically and horizontally. ing. The guide mechanism 6 includes a guide rail 8 having a dovetail groove 8g extending along the arrow β direction, and a slider 10 that reciprocates in the arrow β direction along the dovetail groove 8g. In this case, the slider 10 is provided with an engaging portion 10g engaged with the dovetail groove 8g, and the engaging portion 10g is guided along the dovetail groove 8g, so that the slider 10 can be moved with high accuracy. It can be reciprocated in the direction of arrow β.

  The guide mechanism 6 is provided with, for example, an elevating mechanism (not shown) that can be mounted on the slider 10, and the swing spindle 4 is attached to the elevating mechanism. In this case, the elevating spindle 4 can be moved up and down with high accuracy in the direction of the arrow α by elevating the oscillating spindle 4 by the elevating mechanism. In addition, since the raising / lowering mechanism should just use an existing thing, it does not specifically limit here.

  Further, the oscillating spindle 4 extends from the guide mechanism 6 (elevating mechanism) toward the machining work area F1, and a structure for supporting the grindstone Gs is provided on the extended end side thereof. In this case, the configuration for supporting the grindstone Gs is not particularly shown in the drawing, but any configuration may be used as long as the grindstone Gs can be stably rocked by the rocking spindle 4. . For example, the magnet Gs may be directly attached to the tip of the swing spindle 4, or, for example, a gripping means may be attached to the tip of the swing spindle 4 and the magnet Gs may be gripped by the gripping means. .

  A cover structure is used for such a superfinishing board, and the cover structure includes a partition assembly 12 that prevents the cutting fluid from splashing in addition to the machining work area F1. In this case, the partition assembly 12 is interposed between the machining work area F1 and the swing unit 2 so as to cover the machining work area F1. As a result, the processing work area F1 is completely isolated (isolated) from the opposite area F2 (that is, the area where the rocking unit 2 and other mechanical parts (not shown) are arranged) across the partition assembly 12. Kept in a state.

  More specifically, the partition assembly 12 includes a partition plate 14 disposed between the processing work region F1 and the region F2 where the swing unit 2 is disposed, an opening 14h formed in the partition plate 14, and an opening. The slide plate 16 is arranged so as to be movable up and down and left and right along the partition plate 14 so as to cover the entire 14h. The slide plate 16 is connected to a swing spindle 4 that extends from the swing unit 2 beyond the opening 14h of the partition plate 14 into the processing work area F1.

  Here, as a method of connecting the swing spindle 4 and the slide plate 16, for example, a through hole 16h into which the swing spindle 4 can be inserted is formed in the slide plate 16, and the swing spindle 4 is inserted into the through hole 16h. In this state, the swing spindle 4 and the slide plate 16 may be fixed to each other. In the drawing, as an example, a circular through hole 16 h that substantially matches the outer diameter contour (for example, a circle) of the swing spindle 4 is formed in the slide plate 16, while the swing spindle 4 extends along its outer periphery. A continuous annular flange 4f is projected.

  In this case, the swing spindle 4 is inserted into the through hole 16h from the region F2 side, and the flange 4f is in contact with the slide plate 16, so that the slide plate 16 is penetrated from the processing work region F1 side to the flange 4f. The bolt 18 is fastened. At this time, the slide plate 16 is maintained in a state of being sandwiched between the bolt 18 and the flange 4f, and as a result, the swing spindle 4 and the slide plate 16 can be fixed to each other. As a result, the slide plate 16 moves in the same direction as the swing spindle 4 moves up and down and left and right.

  Moreover, the partition plate 14 mentioned above has the unit side surface 14a which opposes the rocking | swiveling unit 2 (area | region F2), and the process side surface 14b which opposes the process work area | region F1. In this case, the slide plate 16 can be arranged on either the unit side surface 14a or the processed side surface 14b, but here, as an example, the slide plate 16 is arranged movably along the processed side surface 14b. Has been.

  The partition assembly 12 is provided with a guide member 20 for guiding the slide plate 16 along the partition plate 14. The guide member 20 is disposed on the processed side surface 14 b of the partition plate 14 so as to cover a part of the slide plate 16. In this case, the shape of the guide member 20 can be arbitrarily set according to the shape of the slide plate 16.

  For example, in the case of a rectangular guide member 20 as shown in the drawing, the rectangular guide member 20 may be applied so as to cover a part thereof. As a result, the slide plate 16 is positioned between the guide member 20 and the processing side surface 14b of the partition plate 14, and as a result, when the slide plate 16 moves with the swing spindle 4, the slide plate 16 moves. The plate 16 can be smoothly moved in the directions of the arrows α and β without rattling.

  Next, the slide control of the swing spindle 4 will be briefly described. Here, two outer rings W1, W2 (Fig. 1 (b)) of different sizes are prepared as workpieces W and superfinishing is applied to the raceway surfaces M1, M2 of the outer rings W1, W2. Suppose.

  First, a relatively large outer ring W1 is set in the machining work area F1. At this time, the slider 10 of the guide mechanism 6 is moved in the arrow β direction to move the swing spindle 4 in the same direction. Thereby, the grindstone Gs supported on the extending end side of the swing spindle 4 can be inserted into the outer ring W1, and the swing center R1 can be opposed to the raceway surface M1 of the outer ring W1. Subsequently, an elevating mechanism (not shown) of the guide mechanism 6 is operated in the arrow α direction to move the swing spindle 4 in the same direction. Then, until the grindstone Gs comes into contact with the raceway surface M1, the rocking center R1 of the grindstone Gs (coincides with the axis of the rocking spindle 4) moves to a position where the raceway surface M1 coincides with the radius center. In this state, the outer ring W1 is rotated about its rotation center axis Ax, whereby superfinishing is performed on the raceway surface M1 by the grindstone Gs.

  After the superfinishing process for the outer ring W1 is completed, a relatively small outer ring W2 is set in the machining work area F1 instead of the outer ring W1. At this time, the slider 10 of the guide mechanism 6 is moved in the arrow β direction to move the swing spindle 4 in the same direction. Thereby, the grindstone Gs supported on the extending end side of the swing spindle 4 can be inserted into the outer ring W2, and the swing center R1 can be opposed to the raceway surface M2 of the outer ring W2. Subsequently, the elevating mechanism of the guide mechanism 6 is operated in the direction of arrow α to move the swing spindle 4 in the same direction. Then, until the grindstone Gs comes into contact with the raceway surface M2, the rocking center R1 of the grindstone Gs is moved to a position that coincides with the radius center of the raceway surface M2.

Here, the position of the swing center R2 of the grindstone Gs with respect to the raceway surface M2 of the outer ring W2 (the same position as the center of the radius of the raceway surface M2) and the swing center R1 of the grindstone Gs with respect to the raceway surface M1 of the outer ring W1 (track surface). In the case where the position of M1 is the same position as the center of the radius) is relatively different by α, this is operated by the lifting mechanism, and the grindstone Gs is placed at an optimal position on the track surface M2. Can be contacted. In this state, the outer ring W2 is rotated about its rotation center axis Ax, whereby superfinishing is performed on the raceway surface M2 by the grindstone Gs.
In addition, in the operation (not shown) of putting the workpiece W in and out of the processing site, the grindstone Gs in the workpiece W becomes an obstacle, and therefore it is necessary to move the grindstone Gs along the arrow β direction. Also at this time, the slide plate 16 has a structure that can move together with the swing spindle 4.

  As described above, according to the present embodiment, the processing work area F1 is completely isolated (isolated) from the area F2 on the opposite side of the partition assembly 12 (area where the swing unit 2 and other mechanical parts are disposed). Can be kept in a state. At this time, even when the cutting fluid applied to the workpiece (outer rings W1, W2) is bounced off and scattered from the workpiece (outer rings W1, W2) in the superfinishing process as described above, the cutting fluid remains in the partition assembly 12. Therefore, it is not scattered outside the processing work area F1. Thereby, the area | region F2 (area | region where the rocking | swiveling unit 2 and other machine parts are arrange | positioned) on the opposite side of the partition assembly 12 can always be maintained in a clean state.

  Furthermore, by arranging the slide plate 16 on the processing surface side 14b of the screen assembly 12 (screen plate 14), the cutting fluid adhering to the slide plate 16 always drips only into the processing work area F1. Thereby, the area | region F2 (area | region where the rocking | swiveling unit 2 and other machine parts are arrange | positioned) on the opposite side of the partition assembly 12 can always be maintained in a clean state.

Further, since the slide plate 16 is configured to cover the entire opening 14h of the partition plate 14, even when the slide plate 16 moves along with the swing spindle 4, the opening 14h faces the machining work area F1. There is no exposure. As a result, the cutting fluid bounced off from the workpiece (outer rings W1, W2) is scattered from the opening 14h to the area F2 on the opposite side of the partition assembly 12 (the area where the oscillating unit 2 and other mechanical parts are disposed). No. Therefore, the area F2 (area where the oscillating unit 2 and other mechanical parts are arranged) can be always kept clean.
In the above-described embodiment, the outer rings W1, W2 of ball bearings have been described as an example of a workpiece. However, the present invention is also applied to manufacture of inner rings and other inner and outer rings for bearings, for example. be able to.

(a) is a perspective view schematically showing an arrangement configuration of a cover structure for a super finishing board according to an embodiment of the present invention, and (b) schematically shows a configuration of a work to be subjected to super finishing. Sectional drawing.

Explanation of symbols

2 Swing unit 12 Screen assembly F1 Machining work area Gs Whetstone W Workpiece

Claims (6)

A cover structure used for a super finishing machine that applies super finishing to a work set on a work work area while applying a predetermined cutting fluid to the work,
A cover structure for a super finishing board, comprising a partition assembly for preventing cutting fluid from splashing outside a machining work area. The super finishing board is equipped with a rocking unit for performing super finishing on the workpiece by swinging and controlling the grindstone along the workpiece set in the machining work area.
The superfinishing board cover structure according to claim 1, wherein the partition assembly is interposed between the machining work area and the swing unit so as to cover the machining work area. The oscillating unit includes an oscillating spindle for oscillating the grindstone, and the oscillating spindle extends toward the machining work area.
The screen assembly can be moved up and down and left and right along the screen to cover the screen, the screen formed between the processing area and the swing unit, the opening formed in the screen, and the entire opening. With a slide plate arranged,
The cover structure for a super finishing board according to claim 2, wherein a swing spindle extending from the swing unit beyond the opening of the partition plate is connected to the slide plate.   The partition plate has a unit side surface facing the swing unit and a processing side surface facing the processing work area, and the slide plate is arranged to be movable up and down and left and right along the processing side surface. The cover structure for a super finishing board according to claim 3.   The superfinishing board cover structure according to claim 3 or 4, wherein the partition assembly is provided with a guide member for guiding the slide plate along the partition plate.   The superfinishing board cover structure according to claim 5, wherein the guide member is disposed on a processing side surface of the partition plate so as to cover a part of the slide plate.

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