JP4387693B2 - Turning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a turning apparatus for a workpiece having a plating layer on a surface thereof.
[0002]
[Prior art]
A typical work piece whose outer periphery is machined by a lathe is, for example, a printing roll. Such a roll is generally produced by turning using a lathe in order to scrape a minute amount of the deteriorated surface of the roll, even when the surface is deteriorated by use as well as when it is newly produced.
[0003]
[Problems to be solved by the invention]
By the way, many rolls such as printing rolls having a plating layer on the outer peripheral surface are used. When a roll having this plating layer is turned, the adhesion between the plating and the roll is relatively weak, so the plating layer of the cutting part is peeled off during turning, and the plating layer of the unprocessed part is pulled by this peeled plating layer The peeled plating layer may become strip-shaped. The belt-like plating layer formed in this way is wrapped around a roll or a chuck that supports the roll to hinder normal machine operation, or a part in the lathe such as an unturned part of the roll or a turning tool, When touching the part after turning, especially when touching the part after turning the roll, there is a problem that the surface is damaged.
[0004]
In order to avoid this, conventionally, it is necessary to provide a process of peeling the plating layer before turning, and the work process, equipment, etc., increase costs and increase the period until reuse. Had problems.
[0005]
In addition, although the applicant investigated patent document 1 etc. about turning of the workpiece which has a plating layer, the thing regarding the above-mentioned problem was not found.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-202401
The present invention has been made in view of the above-mentioned problems of the prior art, and the object of the present invention is to restore the surface properties by turning without pre-processing a roll having a plating layer. An object of the present invention is to provide a turning device that can be used.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the turning device of the present invention is a turning device for a workpiece having a plating layer on the outer periphery, and a contact point between the workpiece and the cutting tool at a portion holding the cutting tool. There is provided a pressing means for pressing an unprocessed part of a nearby workpiece, and the pressing means is disposed adjacent to the cutting tool and in front of the cutting tool in the moving direction, and ejects a fluid toward the unprocessed part. a nozzle, said unprocessed portion side surface of the pressing means the nozzle is opened, the become larger arc than the outer diameter of the unprocessed portion, having a gap between the yet-processed portion Rukoto It is characterized by. In this case, it is preferable to use a cutting fluid as the fluid.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An example of a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a state in which the present invention is applied to process a roll on a lathe, and a headstock and a tailstock (not shown) are provided on a lathe bed (not shown). A chuck 1 and a tailstock center 2 are attached to be rotatable, and a roll 8 is supported by the chuck 1 and the tailstock center 2. A tool post 3 is provided on a bed (not shown) so as to be movable in a direction parallel to and perpendicular to the rotation axis of the roll, and a turret 4 is rotatably held on the tool post 3. A plurality of holders 5 are attached to the end face and the outer periphery of the turret, and a cutting tool 6 for cutting a roll is fixed to the holder 5. In this state, the roll surface is turned by bringing the cutting tool 6 into contact with the roll 8 and moving the tool post in the direction of the arrow in the figure. In addition, the point described so far is not different from the conventional roll processing by a lathe.
[0010]
A pressing means 7 for pressing the unmachined portion 8a of the roll 8 during turning is attached to the holder 5 to which the cutting tool 6 for processing the roll is fixed, adjacent to the front of the cutting tool 6 in the moving direction.
[0011]
The pressing means 7 will be described with reference to FIGS. FIG. 2 is a plan view showing the main structure of the pressing means 7, and FIG. 3 is a side view of the pressing means 7 as seen from the side opposite to the cutting tool. In FIG. 2, the pressing means 7 is fixed to the holder 5 with bolts 9. A plurality of nozzles 10 are provided on the roll side surface 7 a of the pressing means 7, and a cutting fluid (not shown) supplied via the tool post 3 or the turret 4 passes through the pipe 11 and passes through the inside of the pressing means 7. The ink is discharged from the nozzle 10 toward the roll 8. Here, the distance between the cutting tool 6 and the roll-side surface 7a of the pressing means is preferably as small as possible.
[0012]
As shown in FIG. 3, the roll side surface 7a of the pressing means 7 has an arc slightly larger than the outer diameter of the roll, and the curvature of the arc is such that the gap between the outer diameter of the unprocessed portion 8a of the roll 8 is 1 mm, for example. It is preferable to make it as small as possible.
[0013]
Next, the turning process according to the present invention will be described. A roll 8 having an unprocessed portion on the outer periphery is supported by the chuck 1 and the tailstock center 2, and the roll 8 is rotated via the chuck 1 by the rotation of a main shaft (not shown). Then, the tool post 3 is positioned so that the cutting tool 6 contacts the unprocessed portion of the roll 8, and the cutting fluid is supplied from the tool post 3 side and discharged from the nozzle 10 of the pressing means 7 through the tube 11. .
Subsequently, the unmachined portion 8a of the roll 8 is turned by moving the tool post 3 in the direction of the arrow in FIG.
[0014]
During this turning process, the plating layer on the surface of the unprocessed portion 8a of the roll 8 is peeled off from the roll at the cutting point, and this separation is transmitted to the unprocessed portion 8a, but the cutting fluid discharged from the nozzle 10 is not processed. Since the plating layer of the portion 8a is pressed, the plating layer of the unprocessed portion 8a is not peeled off.
[0015]
In addition, this invention is not limited to said embodiment, You may use the fluid different from cutting fluid, the shape of nozzle 10, the number, the shape of the roll side surface 7a of a press means, a dimension, a dimension, etc. Can be appropriately changed. The present invention is not limited to turning of a printing roll, and can be applied to any workpiece having a plating layer on the surface. Needless to say, other modifications can be made without departing from the scope of the present invention.
[0016]
【The invention's effect】
As described above in detail, according to the invention of claim 1, since it is possible to perform the turning process with the plating layer remaining on the roll surface, a pre-process for removing the plating layer is not required. The peeled plating layer does not damage the processed surface or wraps around the machine and does not hinder the processing. As a result, the time required for turning the roll can be shortened, so that the costs associated with time and facilities can be reduced.
[0017]
Furthermore, according to the invention of claim 1 of the present invention, since a fluid is used for pressing, a configuration capable of easily adjusting the degree of pressing is realized with a simple device, unlike pressing by mechanical contact. Is possible.
[0018]
According to the invention of claim 2 of the present invention, since the cutting fluid is used as the fluid, the cutting fluid pump or pump conventionally provided on the lathe for cooling and lubrication of the cutting point to cutting from the tool post and the turret. The liquid path can be used as it is, and it is not necessary to provide a dedicated fluid supply means, so that it can be realized with an inexpensive and simple configuration.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a state in which a roll is machined by applying the present invention. FIG. 2 is a plan view showing a main configuration of a pressing means 7. FIG. Side view 【Explanation of symbols】
1 .. Chuck, 2 .. Tail center, 3 .. Tool post, 4 .. Turret, 5 .. Holder, 6 .. Bite, 7 .. Pressing means, 7 a. ..Roll, 8a ..Unprocessed part of roll outer periphery, 8b ..Processed part of roll outer periphery, 9 ..Bolt, 10 ..Nozzle, 11.

Claims (2)

A turning device for a workpiece having a plating layer on the outer periphery, and a pressing means for pressing an unmachined portion of the workpiece in the vicinity of a contact point between the workpiece and the cutting tool is provided at a portion holding the cutting tool,
The pressing means includes a plurality of nozzles arranged adjacent to the cutting tool and in front of the cutting tool in a moving direction and ejecting fluid toward the unprocessed portion, and the unprocessed of the pressing means that the nozzles open. parts side surfaces, said a greater arc than the outside diameter of the unprocessed portion, turning device according to claim Rukoto to have a gap between the yet-processed portion. Turning device according to claim 1, wherein the fluid is a cutting fluid.

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