JPS59124505A - Automatic feeder of rotary driving transmission gear with release mechanism and drilling machine or the like - Google Patents

Abstract

PURPOSE:To obtain an automatic feeder, whereby tapping work can be also performed in addition to the work of drilling and reaming, by eccentrically providing a prime moving shaft and a driven shaft, respectively fixing wheels with a cam to the both shafts and disengageably operating each cam, or the like. CONSTITUTION:In the case of application to a drilling machine in which a tool, not shown in the drawing, is lifted by rotation of a feed rod 8 through the engagement of a pinion on the rod 8 with rack, supporting frames 15, 16 fixed by bolts 18 with a certain distance apart through spacers 17 are equipped, and a wheel 19 of major contour is fixed to an end part of the feed rod 8 protruded between the both frames 15, 16. While a wheel 25 of minor contour is fixed to the end of a prime moving shaft 22, having its axial core O2 in a position eccentrically apart by a distance (e) from the axial core O1 of the rod 8, of a motor 23 fixed to the frame 16. Then a feed device is constituted so that the feed rod 8 is rotated a required angle by engaging roller cams 20, 26 supported to the peripheral part of each wheel 19, 25 while inversely reset with a spring or the like by disengaging said roller cams.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotational drive transmission device with a release mechanism and an automatic feeding device thereof in which the same is applied to a drilling machine or the like.

Conventionally, the feed for hole machining, lease machining, etc. on drill presses, etc., can be handled by manually operating the operating lever fixed to the feed shaft of the main spindle, or by fixing a binion to the feed shaft. Binion rack type, in which the mating rack is moved forward and backward with a cylinder, and a worm wheel is fixed to the feed shaft, and a belt is hung between the rotating shaft of the worm, which meshes with the worm wheel, and its drive motor. A worm-type drive unit that transmits the drive force is commercially available, or the user can modify it to a binion-rack type, worm-type drive, etc. as appropriate for use. In the conventional feeding device, the feeding shaft of the drilling machine and its transmission is a gear mechanism as described above, and the feeding speed of the main shaft of the drilling machine is directly connected and synchronized with the transmission drive of the feeding device, so it is difficult to tap. In this case, it is possible to accurately feed the pitch per revolution of the tap, and therefore, the tap setting is performed by using a tap holder to absorb the feeding error.

In view of the above-mentioned points, the present invention has been developed by using a feeding device for a drilling machine or the like, which has a different concept from the conventional ones, and enables drilling and
The aim is to provide a unique rotary drive transmission device that is useful not only for reaming but also for tapping, and an automatic feeding device for drilling machines and the like that utilizes this device.

An embodiment of the present invention will be described with reference to the accompanying drawings.■) is a drilling machine in which a spindle head (2) is normally mounted on a column (1).
Fully formed. This spindle head (2) is equipped with a spindle (8) to which tools used for drilling, reaming, finishing, tapping, etc. are attached, and a drive device that applies forward or reverse rotating force to this spindle head (2). (C), and a gear device (D) that provides the entire feed. (4) is a chuck formed on the spindle spacer (6), and (6) is a chuck for tools such as drills, reamers, rips, and tabs at the lower end of the spindle (8). is attached. (
7) is a binion that meshes with the shaft (4), and is connected to the feed shaft (5) installed orthogonally to the main shaft spacer (5).
0 (9) fixed to the main shaft spacer (6) is a rotating shaft protruding upward from the main shaft spacer (6), and oCLl) fixed to the multi-stage pulley (to) is located behind the main shaft head (2). Normally, a forward rotation motor is used for drilling, IJ-mapping, etc., and a forward/reverse rotation motor is always used for drilling, sopping, etc. (2) is a multi-stage pulley fixed to the rotating shaft of the motor (9), and a bell is attached to the appropriate stage of the pulley (to) and the above-mentioned booster IJα0).
(1B) is suspended and supported, and the rotation speed of the main shaft (8) is freely variable. (1B) is a spiral spring that is wound around and supported on the other end of the feed shaft (8), and is used to bias the feed shaft (8) so as to reverse and return it. Install m1iEIF! - If the disc (6Δ) is constructed instead of the chuck (6), it will be configured accordingly. Note that 0→ is originally the feed axis of the drilling machine (B) (
8), but in the present invention, the operating lever σ→ is not required, and the automatic feeding device (9 is installed) such as the drilling machine (B), which is the main component of the present invention described below, (2)), α6) are the support frames for this device (S), and between both frames (15), (16) there are spacers (17) and connecting bolts (E). etc. are fixed across both frames Q'), (161
The interval can be adjusted to the required interval. At this time, one support 71/-m (1B>) is a 1-1 support that can also be handled by using the side wall of the spindle head (2) itself.

The α casting is a large diameter wheel fixed to the end of the driven side feed shaft (8) protruding between the support frames (15) and (16), and a roller cam (manufactured by Co., Ltd.) is attached to the outer periphery of the wheel. bolt·
It is supported with a nut (zl) so that it can rotate freely. (4) is a driving shaft whose axis (02) is slightly eccentric (e) from the axis (Ol) of the feed shaft (8), i2! 1) is a drive motor with a reduction gear m fixed to the other support frame (16), the output side of which is the drive shaft (4). (to) is a small-diameter wheel fixed to the end of the driving shaft, and a roller cam (Foundation) is supported on the outer periphery of the wheel so that it can rotate freely with bolts and nuts. This device (S) is stably fixed and supported on the spindle head (2) using bolts, bolts, etc. (t281).

Then, a separate activation button is pressed to drive the rotational drive motors (111 and the rotational drive motor for the feed shaft (8)) of the main shaft (8), respectively. Then, one drive motor α℃
The main shaft (8) rotates due to the rotation of ) rotates integrally, and the roller cam (26) on the outer periphery of the wheel ■ comes into pressure contact with the roller cam on the driven side and rotates freely with respect to the driven side wheel (19). The shaft (8) is driven to rotate integrally. The operation of the main components' (i--According to the principle explanatory diagram in Fig. 4, the driving side roller cam (20) in the original position presses and contacts the driven side roller cam (goods) in the original position,
Moreover, both roller cams (26+, -(
While maintaining the engaged state, they rotate integrally to a required angle (θ), specifically, to a position of 270 degrees on the circumference. Required angle (θ
) When the roller cam on the driven side rotates, the roller cam on the driving side rotates.
Lyle α9) and feed shaft (8) are spring springs 08)
Due to the urging force, it is reversed to the original position and automatically returned, and during this time, the driving side roller cam and wheel maintain their normal rotation and rotate to the original position and then stop. Therefore, the main shaft (
When performing hole drilling, reaming, etc. by rotationally driving the main shaft (8), the main shaft (8) is lowered by a full rotation while both the roller cams H1 maintain the locked state as described above. Smooth and reliable automatic feeding can be achieved by performing machining work and setting the rear roller cam to fully disengage. In addition, the drive motor (b)
When the main shaft (8) is fully rotated by forward and reverse rotation to perform tapping, etc., both roller cams (2
61, while the main shaft (8) maintains the engaged state.
After lowering the full rotation to ensure sufficient biting force of the tap drill into the workpiece, and ensuring that the tap drill is biting into the workpiece, all that is left to do is to attach the tap drill. By further rotating the main shaft (8) in the forward direction, the tap drill is automatically lowered and tapped, and after the machining is completed, the drive motor C11)' is reversed to smoothly pull out the tap drill from the workpiece. In this way, in the case of spinning and scraping, this device (S) is used to apply the required biting force to the workpiece, and simultaneously with the progress of the spinning and scraping, both roller cams (i!61 , (A) is released, and the spiral spring (IB) moves the feed shaft (8).
)'s wheel (19) quickly returns to its original position. In this way, this device 6) is rotated in contact with a roller cam attached to the eccentric wheel (to), H). Since it is configured to transmit the driving force of the cow, it only needs to automatically feed the amount necessary and sufficient for biting the tap, and it can also have the function of automatically performing the tapping and spitting.

Therefore, when setting the tap, the feed speed of the main shaft is set to be lower than the self-propelled speed of the tap itself, so that it functions effectively as described above.In addition, this device can be realized as an automatic feed device for a drilling machine, etc. However, all of its essential parts are useful as a rotary drive transmission device with a release mechanism for a wide variety of other devices. Since the feed shaft (feed shaft) is eccentrically provided, a wheel with a cam is fixed to each shaft, and each cam is detachable, it can be used not only for the main parts of automatic feed devices such as drilling machines, but also for other devices. It is extremely useful as a principle invention for various devices that are crowded. t
fc, if this is installed on an automatic feeding device such as a drilling machine,
Without changing the basic configuration of the drilling machine, it can be easily installed as a unit in the feed p-shaft, and the drilling,
It can be useful not only for reaming, etc., but also for automatic feeding during evening and pumping.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an overview of the entire device, Fig. 2 is a front view showing the main parts, Fig. 3 is a cross-sectional plan view taken along the A-A fold line in Fig. 2, and Fig. 4 is a diagram showing the relationship of the roller cam. FIG. 4 is a principle explanatory diagram showing the relative relationship between changes in the alignment state and the moving distance of the main shaft (Y-axis) with respect to the operating time (X-axis). Code table (B) Drilling machine (C) Drive device 0 gear device G) Automatic feed device) Shaft core (1) Column (
2) Main shaft head (8) Main
Shaft (4) Latch (5) Main shaft spacer (6) Chat (7) Pin
On (8) Feed axis (driven axis) (9) Rotation
Axis α0), (Suppressing pulley (111, National drive motor A8+ spring) operation lever μs), (16) Support frame (17)
Sube-sa (ho), (21i aζ-
)Wheel (goods),
□□□) Cam (2) original, dynamic axis (c) reduction
Speed machine (e) Eccentricity (θ) Engagement angle Applicant Tsuda Kogyo Co., Ltd. - ~26. Figure 4

Claims (1)

[Claims] (1) A driving shaft and a driven shaft are arranged with their axes eccentrically arranged, a wheel is fixed to each of the shafts, a cam is formed on each of the wheels, and The cams are disposed in a positional relationship that allows them to be freely engaged and disengaged, and when the driving shaft is rotationally driven, the cam on the driving side engages with the cam on the driven shaft and rotates together, and after rotating the required angle, the cam on the driven side is driven. A rotary drive transmission device 0 (2) with a release mechanism, characterized in that it is configured to release the engagement of both cams by disengaging from the cam on the side, and reverse and return the cam, wheel, and driven shaft on the driven side. The rotational drive transmission device with a release mechanism according to claim 1, wherein one or both of the side and driven side cams are roller cams. (8) A rack is formed on the main shaft spacer on the main shaft side that is rotatably driven in forward or reverse directions, and a pinion that meshes with the rack is fixed to the feed shaft of the main shaft, and the main shaft or the feed shaft, etc. is attached to a spring. In a drilling machine, etc., which is biased and supported in order to return to its original position, the feed shaft is set as the driven side, a driving shaft is provided eccentrically from the axis of the feed P shaft, and a wheel is fixed to each of the two shafts,
A cam is formed on each of the two wheels, and the two cams are disposed in a positional relationship that allows them to be engaged and disengaged, and the cam on the driving side engages with the cam on the driven side by rotation and pivoting of the driving shaft. After rotating as one unit and rotating the required angle, the driven side cam is separated from the driving side cam to release the engagement of both cams, and the driven side cam, wheel, and driven shaft are repeatedly returned to their original positions using kojic acid. An automatic feeding device for a drilling machine, etc., characterized by the following. (4) The automatic feeding device 0 for a drilling machine or the like according to claim 3, characterized in that one or both of the IV cams on the driving side and the driven side are roller cams.