JP2013066984A - Workpiece turning device for liquid honing processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem with a conventional workpiece turning device, wherein, in liquid honing processing, there has been frequently employed a mechanism that a rack and a pinion are driven by an air cylinder, and a workpiece is made to abut on a stopper by being turned with a pivotal support axis as a center, and stopped at a desired angle, however, this causes the complication of structure and a cost increase associated with the complication has been inevitable.SOLUTION: The workpiece 16 being an object to be processed is pressed and held from both sides at respective tips of a reference pin 8 and a press pin 9 which penetrate a pair of opposing side faces 3 in a box-shaped processing chamber 1, and are horizontally and coaxially pivoted so as to oppose each other. A drive shaft 15 of a rotary actuator which is fixed to the outside of the processing chamber 1 is coaxially connected to a base 10 of the reference pin 8, and the reference pin 8 is turned by the drive shaft 15, thus stopping the turn of the workpiece 16 at an arbitrary angle.

Description

  The present invention relates to a work swiveling device for liquid honing, and more particularly to a work swiveling device for liquid honing that can set more stop positions and has better positioning accuracy than conventional ones.

  A liquid honing process in which a slurry made of an abrasive and water is sprayed toward an object to be processed held in a processing chamber to perform surface polishing, deburring, and the like is often employed in manufacturing machine parts.

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  In liquid honing, the relative position of the workpiece and the spray gun can be changed to allow the slurry to properly collide with the object, that is, the desired part of the workpiece, especially the hole intersection formed in the workpiece. For this purpose, many workpieces can be turned in the machining chamber.

  Conventionally, for the turning of the work, a mechanism is often used in which the rack / pinion is driven by an air cylinder, the work is turned around a pivotal support shaft, and stopped at a desired angle by abutting against a stopper. .

  However, in this method, it is difficult to set a large number of workpiece stop positions, and the maximum number of stop positions is three. In order to provide four or more stop positions, a mechanism for moving the injection nozzle is separately provided. As a result, the entire apparatus becomes complicated, and the accompanying cost increase is inevitable. Further, this method has poor positioning accuracy, and it is difficult to center the apparatus.

  The present invention was made in order to solve the above-mentioned problems related to the turning of the workpiece during liquid honing, positioning accuracy is good, the centering of the apparatus is easy, and many stop positions can be set, By eliminating the stopper for positioning, we intend to provide a new work swiveling device for liquid honing with improved maintainability.

  The workpiece, which is the workpiece, is pressed from both sides through the pair of opposing side surfaces in the box-shaped processing chamber and at the front ends of the reference pin and the pressing pin that are horizontally and coaxially opposed to each other. A drive shaft of a rotary actuator fixed outside the processing chamber is coaxially connected to the base portion of the reference pin. By rotating the reference pin with the drive shaft, the workpiece is moved. The above-mentioned problem has been solved so that turning can be stopped at an arbitrary angle.

The workpiece is pressed and held from both sides by the reference pin and the pressing pin, and the rotary actuator is driven to rotate and stop the reference pin by the desired rotation angle. The slurry is sprayed from the spray nozzle toward the desired part of the workpiece, and processing operations such as deburring and polishing of the workpiece surface and the hole intersection portion formed in the workpiece are performed.
At this time, since a rotary actuator is used as a drive source, unlike a conventional rack / pinion system, a positioning stopper is not required, and a workpiece can be freely displaced at an arbitrary angle. There is no need to prepare a separate mechanism for moving the injection nozzle, and the entire device can be simplified, making adjustments easier, improving maintenance, reducing the risk of failure, and reducing manufacturing costs. Is possible. In addition, the overall configuration of the apparatus is simple, the apparatus can be easily centered, and the workpiece can be accurately held. Therefore, it has the effect of enabling high-precision processing, and has high practicality.

The side view of Example 1 of the workpiece | work turning apparatus for liquid honing processes which concerns on this invention. The side view of the crankshaft which is an example of the workpiece | work processed by the workpiece | work turning apparatus which concerns on this invention. In Example 1 of the workpiece | work turning apparatus for liquid honing processes which concerns on this invention, the side view of the state before mounting | wearing a workpiece | work. Similarly, the side view of the state which has mounted | wore with the workpiece | work and is processing. Similarly, the side view of the state which is processing by rotating and displacing a workpiece | work.

  When performing liquid honing, the greatest feature is that the workpiece is turned by a rotary actuator in the processing chamber.

FIG. 1 is a side view of Embodiment 1 of a work swiveling device for liquid honing according to the present invention.
In the figure, reference numeral 1 denotes a processing chamber, which has a substantially rectangular parallelepiped box shape composed of two pairs of side surfaces 3, 3, 4, 4, and an upper surface 5 and a lower surface 6 that face each other. In order not to scatter outside, it is almost sealed.

  A pair of bearings 7 and 7 are attached to face each other through the pair of side surfaces 3 and 3 of the processing chamber 1, and the reference pin 8 and the pressing pin 9 respectively connect the base portions 10 and 11 to the processing chamber. The bearings 7 and 7 are positioned so as to be opposed to each other in a horizontal and coaxial manner so as to be positioned outside the 1.

  From the lower side of the bearing 7, holding plates 12 and 12 ′ are extended outward in parallel with the reference pin 8 and the pressing pin 9, respectively, on the holding plate 12 below the reference pin 8. The rotary actuator 13 is mounted and fixed. Further, the drive shaft 14 of the rotary actuator 13 is coaxially connected to the base 10 of the reference pin 8, and the reference pin 8 also rotates following the rotation of the drive shaft 14.

  The rotary actuator 13 can be stopped at an arbitrary rotation angle as its original function, and accordingly, the reference pin 8 can also be stopped at an arbitrary rotation angle in the processing chamber 1. Yes.

  Further, the shaft core of the tip portion 15 of the reference pin 8 is formed with a projection 20 that is fitted into the concave hole portion 18 formed on the shaft core of the end portion 17 of the workpiece 16 that is a workpiece. Protrusions 21 are also formed at locations deviated outwardly from the axis of the tip portion 15, and are driven by being fitted into the concave holes 19 formed at the corresponding positions of the end portion 17 of the work 16. A rotational force is transmitted from the shaft 14 to the workpiece 16.

  In the first embodiment, the illustrated workpiece 16 is a crankshaft of a reciprocating engine such as a gasoline engine or a diesel engine, but is shaped so as to be supported in the internal space 2 of the processing chamber 1 with both ends pivotally supported. Of course, other members may be used.

  On the other hand, the base 11 of the pressing pin 9 is mounted on the holding plate 12 ′ on the pressing pin 9 side, and the distal end portion 22 of the pressing pin 9 is connected to the reference pin 9 in the internal space 2 of the processing chamber 1. The pressing pin 9 can be advanced / retracted in the axial direction by a driving source such as an air cylinder or an electromagnetic solenoid (not shown). Yes.

  Further, a projection 25 is formed on the axial center of the tip end portion 22 of the pressing pin 9 so as to be fitted into a concave hole portion 24 formed on the axial center of the other end portion 23 of the workpiece 16.

  This embodiment has the configuration as described above. As shown in FIG. 3, the workpiece 16 is carried into the machining chamber 1 at the standby position where the pressing pin 9 is retracted, and the reference pin 8 and the pressing pin are moved. The axial center of the work 16 is positioned at a position coaxial with the work 9, and in this state, the push pin 9 is advanced, and the protrusion of the push pin 9 is inserted into the concave hole 24 formed at the tip 22 of the work 16. 25, and the projection 20 of the workpiece 16 is fitted into the concave portion 18 of the reference pin 8, and the projection 21 is fitted into the concave portion 19, and the workpiece 16 is inserted by the reference pin 8 and the pressing pin 9 as shown in FIG. Press and hold from both sides.

  If the rotary actuator 13 is driven in this state, the reference pin 8 rotates by a desired rotation angle, and the workpiece 16 is displaced by a desired rotation angle accordingly. Accordingly, the workpiece is sequentially displaced by a desired rotation angle so that the state shown in FIG. 4 and the state shown in FIG. 5 are obtained, and slurry is jetted from a jet nozzle (not shown) toward a desired portion of the workpiece 16. Processing operations such as deburring and polishing of the surface of the workpiece 16 and the hole intersection formed on the workpiece 16 are performed.

  When the processing operations such as deburring and polishing are completed, the pressing pin 9 is retracted to return to the state shown in FIG. 3, and the holding of the workpiece 16 by the pressing pin 9 and the reference pin 8 is released. 16 is carried out of the processing chamber 1 to the outside, and the operation is completed.

  Thus, unlike the conventional rack / pinion type, the work swiveling device for liquid honing processing according to the present invention does not require a positioning stopper and can freely displace the work at an arbitrary angle. Therefore, it is not necessary to prepare a separate mechanism to move the injection nozzle, the entire device can be simplified, and the adjustment is easy, maintenance is improved, there is less risk of failure, and manufacturing costs are also reduced. It can be lowered. In addition, the overall configuration of the apparatus is simple, the apparatus can be easily centered, and the workpiece can be accurately held. This has the effect of enabling highly accurate machining and has high practicality.

  It can be used for deburring the hole intersections of engine parts such as crankshafts and various cylindrical metal parts.

1. Processing room Internal space Side 4. Side surface 5. Upper surface 6. Lower surface 7. Bearing 8. Reference pin 9. Pushing pin 10. Base 11. Base 12. Holding plate 13. Rotary actuator 14. Drive shaft 15. Tip 16. Work 17. End 18. Concave portion 19. Recessed portion 20. Protrusion 21. Protrusion 22. Tip 23. End 24. Concave portion 25. Protrusion

Claims (1)

  The workpiece, which is the workpiece, is pressed from both sides through the pair of opposing side surfaces in the box-shaped processing chamber and at the front ends of the reference pin and the pressing pin that are horizontally and coaxially opposed to each other. A drive shaft of a rotary actuator fixed outside the processing chamber is coaxially connected to the base portion of the reference pin. By rotating the reference pin with the drive shaft, the workpiece is moved. A work swiveling device for liquid honing processing, characterized in that it can be swung at an arbitrary angle.

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