JPH026970Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention enables a manually operated drilling machine to be operated automatically by numerical control without impairing its manual operation feeling or its functions, and also increases the machining function. It concerns a retrofitted drilling machine.

Manually operated drilling machines are widely used in the metal processing field due to their versatility.
Drilling machines) have also been proposed and put into practical use, but each has its own problems.

In other words, the NC drilling machine has a structure that almost completely eliminates the manual operation handle, etc. that is inherent to the machine, so it is impossible to perform the work that would be done by operating the manual handle like a conventional machine. There is a problem in that the versatility that is the inherent feature of a drilling machine cannot be taken advantage of.Also, although manually operated machines do not have the disadvantages of NC machines, they cannot take advantage of the labor-saving machining that is a feature of NC machines. The problem is that it cannot be done.

This invention was developed in view of the current state of drilling machines as described above.
It is possible to automate using numerical control without sacrificing the feeling of manual operation or its functions, and furthermore,
This was developed with the aim of providing a drilling machine that can increase machining functions, and its configuration consists of a base, a column that is rotatably fixed on the base, and a motor that is used as a drive source for the column. It is equipped with a long arm that can be slid and fixed in the vertical direction, and a main shaft motor that is mounted on the arm so that it can be slid and fixed in the horizontal direction of the arm via a rack and pinion mechanism by manual operation of the feed handle. A manually operated drilling machine equipped with a spindle head, a spindle attached downward to the spindle head and rotated by the spindle motor, and a manual feed handle for the spindle disposed near the spindle. In the base, a column having substantially the same height as the column is erected on the side facing the column, and the arm is provided with a clamp at an outer end thereof to abut and fit on the column, The X-axis origin position of the arm that rotates about the comra is ensured and maintained by the clamp that can be opened and closed, and a trapezoidal screw and its drive motor are provided to send the main shaft head parallel to the arm, The spindle head is provided with a half nut member that is screwed into the feed screw, and a distance detector is provided to detect the amount of movement of the spindle head on the arm, and furthermore, a half nut member is provided above the handle shaft of the spindle feed handle. A spindle feed motor connected to the shaft via a clutch is provided, and a scale bar is attached to the spindle along the outer surface of the spindle head, which is parallel to the axial direction and moves up and down together with the spindle.
A distance detector operated in conjunction with the scale bar is attached to the side of the spindle head, and an index table with manual or automatic indexing and positioning functions is installed on the base, or manual or automatic positioning in the Y-axis direction. A slide table provided with a function is selectively mounted and fixed, and when the half nut is released, the main shaft head can be manually fed by operating the feed handle, and the clutch of the handle shaft is released. When the spindle is moved, the spindle can be manually fed by operating the spindle feed handle, and when the clamp of the arm support member is released, the arm can pivot about the column.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing an example of a conventionally known manually operated drilling machine, in which 1 is a base, 2 is a column support stand provided on the right side of the base, and 3 is a column support stand provided on the support stand 2 so as to be rotatable. Column 4 is a horizontal arm attached to the column 3 so as to be able to slide up and down.
is related to a feed screw 3b rotated by a motor 3a provided on the column 3 via a nut member (not shown), and the rotation of the feed screw 3b causes the vertical direction (hereinafter referred to as the Z axis) to be It is slid along column 3 and can be positioned.

Reference numeral 5 denotes a main shaft head mounted on the sliding guide portion 4a of the arm 4 so as to be slidable and fixed in the horizontal direction (hereinafter referred to as the A rack 4b provided on the guide portion 4a via a rack (not shown in the figure)
is caused to slide in the X-axis direction by transmitting the signal to
It can be positioned at any position.

Reference numeral 6 designates a spindle provided protruding from the lower surface of the head 5, to which the rotation of a drive motor 6a provided at the top of the head 5 is transmitted, and the rotation of the handle 6b is transmitted to the spindle 6. is transmitted by a feed mechanism 6c composed of a gear train, a rack and pinion, etc., and is configured to be movable up and down relative to the main shaft head 5. In addition, 6d is a fine vertical feed handle of the spindle 6,
The above 1 to 6 constitute an example of a conventionally known radial drilling machine, but the present invention adds the configuration explained in FIGS. 2 to 7 to the general general-purpose drilling machine shown in FIG. Moreover, it aims to automate and make the drilling machine multifunctional while retaining all of its functions.

7 is a support located on the side corresponding to the column 3 on the base 1, in other words, a column located on the tip side of the arm 4 and erected from the side of the base 1 and having approximately the same height as the column; A support member is provided on the tip side of the arm 4 and abuts on the support column 7 to clamp the support column.When the clamp of the support member 8 comes into contact with and clamps the support column, The front surface of the arm 4, ie, the sliding surface 4a of the spindle head 5, is provided at a position that corresponds to the base line of the X-axis. Incidentally, in order to position the spindle 6 on the center of an index table which will be described later, the effective length of the support member 8 is adjustable.

Reference numeral 9 denotes a feed screw for the main shaft head, which is attached to the arm 4 parallel to the sliding guide portion 4a thereof and is rotated by a drive motor 9a provided at the outer end of the arm, and is a trapezoidal screw. Reference numeral 10 denotes a half nut member which is attached to the outer surface of the spindle head 5 corresponding to the screw 9 and whose screwed state with the feed screw 9 can be freely switched between screwed and unscrewed by a switching handle 10a. When screwed into the feed screw 9, the spindle head 5 is slid and positioned in the X-axis direction by the rotation of the feed screw 9, and when the half nut member 10 is unscrewed, it is traversed as before. The spindle head 5 is fed by manually rotating the handle 5a. Reference numeral 11 denotes a sliding guide portion 4 of the arm 4 on the outer surface of the spindle head 5.
This is a distance detector in the X-axis direction provided on a portion corresponding to the upper surface of a, and here a gauge wheel type length measuring device is used.

Reference numeral 12 denotes a vertical feed motor of the spindle provided above the handle shaft 6e of the vertical feed mechanism 6c portion of the spindle 6 in the main shaft head 5, and 12a represents a transmission mechanism for the output of the motor 12, which is constituted by a gear train. The output end 12b is connected to the upper part of the handle shaft 6e of the Z-axis feed mechanism 6c via a gear 6f (see FIG. 7), and 12c is an operating handle for the clutch 6g.

Here, the vertical feed motor 12 of the spindle and its transmission mechanism 12a are provided above the vertical feed mechanism 6c, and the feed motor 12 is provided above the handle shaft 6e.
The reason for transmitting the output through the clutch 6g is to retain the operational feel and function of the existing manual feed mechanism and to minimize modification of the feed mechanism 6c.

13 is a scale bar arranged along the Z axis (vertical axis) on the outer surface of the spindle head 5;
Its lower end is fixed to a bar attachment body 13a attached to a spindle holder that moves up and down with the spindle 6, and its middle part is supported by a sliding guide part 13b provided on the outer surface of the spindle head 5. .
A gauge wheel type distance detector 13c is installed inside the guide section 13b, and the spindle 6
The amount of vertical movement of the scale bar 13 can be detected by the amount of vertical movement of the scale bar 13. Also, 13d
are dots provided at the upper and lower ends of the effective portion of the bar 13, and the effective length of the bar 13 by these dots is set in accordance with the vertical stroke amount of the spindle 6. Thus, a limit switch (not shown) may be associated with the bar 13 to detect the end of the vertical stroke of the spindle 6.

Reference numeral 14 denotes a slide table mounted and fixed on the base, and is provided with table supports 14a and 14b at the same height as the base 1 on the lower surface of both ends in the length direction. It is designed so that it can be positioned arbitrarily in the Y-axis direction, and the positioning point can also be detected by a gauge wheel type length measuring device (not shown in the figure).

Reference numeral 15 denotes an index table mounted and fixed on the base 1 in place of the slide table 14, and this table can be indexed by operating an indexing handle 15a or by operating a drive motor 15b. In addition, the indexing angle is determined by setting a gauge wheel type length measuring device (not shown in the figure) in contact with the inner and outer circumferential side of the turntable 15c, and making the length of the circumference of the rotated table 15c correspond to the angle. It is designed so that it can be detected.

The drilling machine of the present invention has the structure consisting of the above-mentioned 7 to 15 members added to the conventionally known drilling machine shown in FIG. It is possible to feed horizontally, and
By unclamping the support member 8 of the arm, the arm 4 can also pivot around the column 2,
Furthermore, the vertical feed by operating the manual handle 6d of the spindle 6 is possible by operating the feed handle 6d with the original operating feeling, and the manual operating feeling and function of the drilling machine are not impaired at all. .

Moreover, regardless of such manual operation, the amount of movement of the head 5 and the amount of feed of the spindle 6 can be detected by a length measuring device. Also,
Since the feed amount can be detected even during automatic feed,
Index table 15 and slide table 1
Coupled with the position detection function provided in 4, automation by numerical control etc. can be easily performed.

In addition, if the arm 4 of the drilling machine of the present invention is fixed to the support 7, the sliding guide portion 4a of the spindle head 5 can be
Since this becomes a fixed X-axis, by combining it with the slide table 14, it can be used as a boring machine.Furthermore, if the machine in this state is numerically controlled, it can be used as an NC boring machine. It is useful as a machine tool because it can expand its functions.

Further, when the index table 15 is used, the arm 4 is fixed to the column 7 so that the spindle 6 coincides with the center of the table 15, which is advantageous in terms of ease of use.

The present invention is as described above, and it is possible to operate an existing manual-operated drilling machine using an existing manual handle by simply making a slight modification to the manual operating mechanism of the existing or existing manual-operating drilling machine. In addition to making it possible to select between manual feed and power feed, the feed amount for each of the X and Z axes is detected regardless of whether the feed means is automatic or manual, making it easier to operate the manual handle before retrofitting. Of course, it can be used as a general-purpose drilling machine as it is, but it can also be used as a drilling machine or boring machine that can be operated using simple numerical control with manual feed drive source, such as positioning control, as well as a completely closed-loop system in the original sense. It can be used as either a numerically controlled drilling machine or a boring machine. Therefore, the general-purpose drilling machine can be made into a highly versatile machine tool that can be controlled from various angles, which is extremely useful in practice.

[Brief explanation of drawings]

Figure 1 is a front view of a general manually operated drilling machine, Figure 2 is a front view of the drill press of the present invention equipped with a slide table, Figure 3 is a right side view of Figure 2,
Figure 4 is a plan view of the drill press of the present invention with the spindle head removed, Figure 5 is a front view of the drill press of the present invention equipped with an index table, and Figure 6 is a plan view of the drill press of the present invention with the spindle head of Figure 5 removed. , FIG. 7 is a front sectional view showing the transmission mechanism of the spindle feed motor. 1...Base, 2...Column support stand, 3...Column,
4...Arm, 5...Main shaft head, 6...Spindle,
7... Support column, 8... Arm support member, 9... Feed screw, 10... Nut member, 11... Distance detector, 12
...Spindle feed motor, 12a...Transmission mechanism, 1
3...Scale bar, 13a...Bar attachment body, 13b
...Bar sliding guide part, 13c...Distance detector, 14
...Slide table, 15...Index table.

Claims (1)

[Scope of Claim for Utility Model Registration] A base, a column mounted on the base so that it can be rotated and fixed, a long arm that is attached to the column so that it can be slid and fixed in the vertical direction using a motor as a drive source, and a feeder. a spindle head equipped with a spindle motor mounted on the arm so as to be slidable and fixed in the horizontal direction of the arm via a rack and pinion mechanism by manual operation of a handle; and a spindle motor attached downwardly to the spindle head. In a manually operated drilling machine equipped with a spindle rotated by a spindle and a manual feed handle for the spindle disposed near the spindle, the base is provided with a spindle on a side opposite to the column. A column is erected at approximately the same height as the column, and the arm is provided with a clamp that abuts and fits on the column at its outer end, so that the X-axis origin position of the arm that rotates about the column can be opened and closed. The main shaft head is provided with a trapezoidal screw and its drive motor for feeding the main shaft head parallel to the arm, and the main shaft head is provided with a half nut member that is screwed onto the feed screw. In addition, a distance detector is provided to detect the amount of movement of the spindle head on the arm, and a spindle feed motor is provided above the handle shaft of the spindle feed handle and connected to the handle shaft via a clutch. A scale bar that is parallel to the axial direction and moves up and down together with the spindle is attached along the outer surface of the spindle head, and a distance detector that is operated in relation to the scale bar is attached to the side surface of the spindle head. Additionally, an index table equipped with a manual or automatic index positioning function, or a slide table equipped with a manual or automatic positioning function in the Y-axis direction is selectively mounted and fixed on the base. When the half nut is released, the spindle head can be manually fed by operating the feed handle, and when the clutch of the handle shaft is released, the spindle can be manually fed by operating the spindle feed handle, and the arm support member When the clamp is released, the arm can rotate around the column, and manual feed of the spindle head in the X-axis direction and manual feed of the spindle in the Y-axis direction are controlled by the respective controls provided on the spindle head and the spindle. A distance detector is used to read the feed amount while feeding, and the detection signal of the distance detector is used as a feedback signal when the feed of the main shaft and spindle is NC-controlled. Drilling machine.