JPH0570814U - Material presser for machine tools - Google Patents

Abstract

(57) [Abstract] [Purpose] Regardless of the size of the work material, it always presses the vicinity of the processing position easily and surely to prevent the work material from vibrating or rising due to the operation of the machine tool and to position it accurately. Provide a material holder that can A holding member 10 having a holding groove 13 having an opening 14 in a plate-like portion 12 which is fixed to the tip of a spindle cylinder portion 61 and extends substantially horizontally on both sides, a small diameter portion 22 and a large diameter. A plurality of adjusting portions 21 are alternately arranged with the portions 23.
And a pressing part 30 elastically provided on the front part of the adjusting part.
And a pressing member 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a material holder for a machine tool.

[0002]

[Prior Art]

 Conventionally, when a metal plate, a resin plate, or a wood plate is used for cutting and drilling using a machine tool such as a drill or center drill, the work material vibrates or rises due to the operation of the machine tool, causing misalignment. However, there was a problem that precise processing becomes difficult.

Therefore, it is conceivable to clamp and fix the material to be processed on the edge of the processing table with a clamp-type presser or the like. However, when the material to be processed is large, the central part, which is the processing part, is processed. There was the inconvenience that it could not be pressed down sufficiently and could not be fixed to the table when the work material was small. Therefore, in the past, most of the time, the operator performed the machining work by operating the machining head with the right hand while holding the work piece with the left hand, and the physical and mental fatigue caused by performing such work for a long time. Is big.

[0004]

[Problems to be solved by the device]

 In consideration of such a situation, the present invention is extremely simple and reliable, without attaching a special device to the processing table, and without requiring special work for pressing, only by pushing down the spindle for the processing work. It proposes a material presser that can press the workpiece. Further, the present invention proposes a material pressing tool capable of reliably pressing the vicinity of the processing position to perform the processing operation regardless of the size of the material to be processed.

[0005]

[Means for Solving the Problems]

 That is, according to the invention, a holding member fixed to the tip of a spindle cylinder portion of a machine tool and having a holding groove having an opening in a plate-like portion extending substantially horizontally on both sides, and a holding member for holding the holding member are provided. An adjusting portion that is inserted into the groove and has a plurality of small diameter portions that have substantially the same height as the holding groove and a large diameter portion that has a diameter that is larger than the groove width of the holding groove, and that are alternately arranged in series; A material pressing tool for a machine tool, comprising: a pressing member formed of a pressing portion elastically provided on the front part of the machine part.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a partially cutaway front view showing an example of a material pressing tool for a machine tool of the present invention, FIG. 2 is a longitudinal sectional view showing an example of a pressing member, and FIG. 3 is a plan view showing an example of a holding member. FIG. 4 is a plan view showing an example of the stopper member, and FIG. 5 is a plan view showing another example of the holding member.

As shown in FIG. 1, the material pressing tool of the machine tool of the present invention comprises a holding member 10, pressing members 20 and 20 for pressing the workpiece W from both sides, and a stopper member 40. A workpiece W such as a steel plate, a resin plate, or a wooden plate is reliably pressed and fixed onto the processing table 50 by the pressing members 20 and 20 of the pressing tool. Reference numeral 60 is a machine tool such as a drill, 61 is a cylindrical cylinder portion, 62 is a drill blade, and 63 is a chuck.

As will be better understood from FIG. 3, the holding member 10 includes a tubular portion 11 and a plate-like portion 12 extending substantially horizontally from the end of the tubular portion 11 to both sides, The spindle cylinder portion 61 of the machine tool 60 is inserted into and fixed to the cylinder portion 11. Reference numeral 19 is a stop screw. The plate-shaped portion 12 has a holding groove 13 having openings 14 formed at both ends thereof. The groove width a of the holding groove 13 is formed to be substantially the same as the diameter a of the small diameter portion 21 of the pressing member 20 described below. In addition, in this embodiment, the height of the cylindrical portion 11 is formed to be substantially the same as the height d of the large diameter portion 22 of the pressing member 20 which will be described later.

As shown in FIG. 2, the pressing members 20 and 20 are composed of an adjusting portion 21 and a pressing portion 30. The adjusting part 21 is composed of a small diameter part 22 and a large diameter part 23, which are alternately connected to each other to adjust the height position of the spindle of the machine tool 60. The small-diameter portion 22 is formed so that its diameter is substantially the same as the groove width a of the holding groove 13 of the holding member 10 and its height is substantially the same as the thickness b of the plate-shaped portion 12 of the holding member 10. The holding member 10 is inserted into the holding groove 13 through the opening 14 of the holding member 10. The large-diameter portion 23 has a diameter c larger than the groove width a of the holding groove 13 of the holding member 10, and its height d is approximately the same as the height of the tubular portion 11 of the holding member 10 as described above. It is formed almost equally. Although the two pressing members 20 are provided in this embodiment, one or many pressing members 20 may be provided depending on the shape of the workpiece W.

A pressing member 30 is provided on the front portion of the adjusting portion 21, that is, on the workpiece W side. The pressing member 30 is composed of a tubular portion 31 connected to the adjusting portion 21 and a pressing portion 32 elastically provided in the tubular portion 31 by a spring 35. It is pressed by the elastic force of. In this embodiment, an elastic tip portion 33 is attached to the tip of the pressing portion 32. The elastic tip portion 33 is formed of an elastic body such as nylon, and is designed so as to soften the contact with the workpiece W and prevent it from being scratched.

As shown in FIGS. 1 and 4, the stopper member 40 is provided with a sliding portion 41 through which the spindle cylinder portion 61 is inserted, and a substantially horizontal direction extending from the sliding portion 41 to both sides. It is composed of a plate-like portion 42, and is provided slidably in the cylinder direction of the spindle cylinder portion 61 to prevent the pressing member 20 from falling off the holding member 10 and perform positioning thereof. The plate-like portion 42 has holding hole portions 43, 43 formed to have a diameter substantially equal to the diameter c of the large-diameter portion 23 of the holding member 20, and the holding members 20, 20 are inserted therethrough.

The function of the material pressing tool will be described with reference to FIG. 1. First, prior to processing, the holding member 10 is fixed to the spindle cylinder portion 61 of the working machine 60 by the set screw 19.

Next, the small diameter portion 22 of the pressing member 20 is fitted into the holding groove 13 of the holding member 10. The fitting position of the holding groove 13 to the small-diameter portion 22 can be appropriately determined according to the thickness of the workpiece W, the depth of perforation or the surface shape, the pressing strength against the workpiece W, or the like. it can.

Then, from the upper side of the holding member 10, the stopper member 40 inserts the spindle cylinder portion 61 into the sliding portion 41 and the adjustment portion 21 of the pressing member 20 into the holding hole portions 43 and 43. Can be installed. As a result, the pressing member 20 can be attached to the spindle barrel portion 61 and its position can be fixed. At the time of processing, the spindle cylinder portion 61 is pushed down together with the pressing member 20. As a result, lifting of the workpiece W can be prevented and accurate positioning and drilling can be performed at the same time.

FIG. 5 shows another embodiment of the holding member. In the holding member 10A of this example, a bent portion 13B is provided in the holding groove 13A, and the adjusting portion 21 of the holding member 20 is provided. By accommodating the small diameter portion 22 in the bent portion 13B, the position of the pressing member 20 can be fixed. Therefore, according to this example, it is not necessary to use the stopper member 40 of the above embodiment. In the figure, reference numeral 11A is a cylindrical portion, and 12A is a plate-shaped portion.

[0016]

[Effect of the device]

 As shown and described above, according to the material pressing tool for a machine tool of the present invention, regardless of the size of the material to be processed, the vicinity of the processing position is always reliably pressed and the material being processed by the machine tool is operated. Vibration and lifting can be prevented and accurate positioning can be performed, enabling highly accurate machining. Moreover, the work piece can be held very simply and reliably by simply pushing down the spindle for the working work without requiring any special work for pressing, and the present invention brings great benefits.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an example of a material pressing tool of a machine tool of the present invention.

FIG. 2 is a vertical cross-sectional view showing an example of a pressing member.

FIG. 3 is a plan view showing an example of a holding member.

FIG. 4 is a plan view showing an example of a stopper member.

FIG. 5 is a plan view showing another example of a holding member.

[Explanation of symbols]

 10 holding member 12 plate-like portion 13 holding groove 14 opening 20 holding member 21 adjusting portion 22 small diameter portion 23 large diameter portion 30 pressing portion 40 stopper member 41 holding hole portion

Claims (2)

[Scope of utility model registration request] 1. A holding member having a holding groove having an opening formed in a plate-like portion which is fixed to a tip end of a spindle cylinder portion of a machine tool and extends substantially horizontally on both sides, and a holding groove of the holding member. A small diameter portion having a height substantially the same as the holding groove and a large diameter portion having a diameter larger than the groove width of the holding groove are alternately arranged in series,
A material pressing tool for a machine tool, comprising a pressing member formed of a pressing portion elastically provided on the front part of the adjusting portion. 2. The large-diameter portion of the adjusting portion of the pressing member according to claim 1, further comprising a plate-like portion slidably provided in a cylinder direction of the spindle cylinder portion and extending substantially horizontally on both sides. A material pressing tool for a machine tool, which includes a stopper member having a holding hole portion having a diameter substantially the same as the above.