JPS6040245Y2 - Assembly support for spindle support arm in multi-axis drilling machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an assembly support for a spindle support arm in a drilling machine.

Various structures have recently been proposed for spindle support devices for multi-spindle drilling machines, but the basic one, as shown in Fig. A spindle support arm port, which rotatably supports a spindle shaft d rotated at one end via a telescopic universal shaft C from a main shaft (not shown) provided at the upper part of the spindle head I, is attached to the lower surface. Grooves e and e' having a T-shaped vertical cross section in one row or two rows (in this example, two rows) of hoes are provided around the periphery of the cage, respectively.
Two supporting arm fixing poles are fitted and installed vertically.
g', the pole F gt g' extends in the longitudinal direction of the spindle support arm opening, and the upper surface and the lower surface i of the support arm opening
The nuts 1 (, k') are screwed into the lower parts of the supporting arm fixing bolts g, g' by passing through the elongated holes j, and fixing them in a predetermined position.

Note that a rotary tool such as a drill or a tap is attached to the lower end of the spindle shaft d.

With such a configuration, when positioning the tip of the rotary tool at the lower end of the spindle shaft d, loosen the nuts 1 (, k') and insert the supporting arm fixing holes I''g, g' into the grooves e, e. This is done by moving the inside of the spindle and displacing the position of the spindle support arm opening, but in that case, the spindle support arm opening tends to tilt toward the spindle due to the spindle's own weight, so when you think that you have successfully positioned it, If you tighten it, the tip of the rotary tool will be slightly displaced and become out of order, so it has the disadvantage that accurate positioning takes time.

Therefore, as shown in FIG.
is attached via a spacer piece n, the holding plate m is shaped like a hollow rectangular frame, and the frame O forming the four sides of the rectangle has nuts l (,
Provide two slits p wide enough to allow the nut k to slide.

In order to spell k', the spindle support arm opening is held on the holding plate m so that the spindle support arm opening does not tilt toward the spindle, and the positioning of the tip to the rotary tool is completed,
A device has also been proposed in which when the nut is tightened, the tip of the rotary tool is fixed in place without going out of position, and this is effective in making positioning of the rotary tool easier. , this holding plate m is in the shape of a hollow rectangular frame, and two slits p must be made in each of the four sides of the rectangular frame O, which is not easy to process and therefore expensive. Among many rotary tools, there is a disadvantage that there is a wasted part for machining that only requires displacement of one part.

The purpose of this invention is to provide an assembly support for a spindle support arm in a multi-spindle drilling machine which can eliminate the drawbacks of the construction.

The structure will be explained based on an embodiment shown in FIGS. 3 and 4. The assembly support for the spindle support arm in this multi-spindle drilling machine has an upper horizontal rod part 1 having a rectangular cross-section, which is arranged vertically in the longitudinal direction. It has an elongated bolt insertion hole 2 passing through it, and also has a lower horizontal rod part 3 having a rectangular cross section and parallel to the upper horizontal rod part 3, and a bolt thread in the center of the lower horizontal rod part 3. Two rectangular frames A having required screw holes 4 and having a height h slightly higher than the height H of the spindle support arm opening, and a rod material 32 having a rectangular cross section.
and two rods C having a rectangular cross section and having a length L not shorter than the length 1 of the lower horizontal rod portion 3 of the rectangular frame body A, and having a bolt insertion hole 5 in the center; a fixing bolt insertion hole that passes through the bolt insertion hole 5 of the rod C and can be screwed into the bolt insertion screw hole 4 of the lower horizontal rod portion 3 of the rectangular frame body A;
It consists of two T-shaped bolts E and two nuts F that can be vertically fitted into two rows of T-shaped grooves e, e around the lower surface of the casing a of the spindle head.

Note that in FIG. 3, r indicates a washer on the nut, and k protrudes below the rod material B, B to facilitate nut mounting.

Since this embodiment has a structure similar to Narukami's, when in use, as shown in FIG. Two rows of grooves with a T-shaped cross section, drilled around the lower surface of the T-shaped bolt E,
Insert and vertically insert a pair of holes E into each groove, e/, at intervals, and find holes 2 in the upper transverse rod portion 1 of each of the two rectangular frames A in these T-shaped holes E and H. Oak) F, stop with F,
Pass the fixing bolt D through the bolt insertion hole 5 at the center of the rod C and screw it into the screw hole 4 of the lower horizontal rod 3 of the rectangular frame A, and screw the upper surface of both rods C and the lower side of both rectangular frames A. Two rods B are inserted between the bottom surface of the rod portion 3 and the fixing bolt D in the center, and the fixing bolts D are respectively pushed so that the upper surface of the rods B is on the lower side of the pair of rectangular frames A. Assembly and installation are completed by making pressure contact with the lower surface of the rod.

Therefore, the spindle support has 19 openings.

When changing the position of the spindle support, use 19 openings.

If you loosen the nuts l (, ni') on the bottom of the spindle support opening □9, the tightening of the opening 2 will be relaxed and it will rest on the two rods B, but the spindle shaft side will not be tilted.

Therefore, there are 19 spindle support openings. Position the tip of the rotary tool by holding it at your waist, then tighten the nut again to make it easier to position.

Also, the spindle support arm opening near the corner of the drill head.

If the 9-hole 4 etc. are often moved, two rows of orthogonal T-shaped grooves e and e' should be installed at the corner, as shown in FIG.
, e, and e', and assemble in the same manner as described above.

The hole 2 of the upper horizontal rod portion 1 is made into a long hole that penetrates to one of the vertical rod portions 6, as shown in FIGS. 3 and 4.
If a groove 7 is formed in the vertical rod portion 6 to be deeper than the depth of the hole 2, the T-shaped bolts E, E can be inserted into the hole 2 from the groove 7, thereby facilitating the assembly operation.

Also, the frame A does not necessarily have to be rectangular as shown in Figures 3 and 4, but is shaped like a single character as shown in Figure 6, with bolts inserted through the upper horizontal rod part 1 on the side. The holes 2 and 2' may be provided at intervals between the T-shaped grooves e and e', and the screw hole 4 may be provided in the center of the lower surface of the lower horizontal rod portion 3.

In short, the frame A has horizontal rod portions 1 with a rectangular cross section that are vertically parallel to each other.
, 3, an insertion hole 2 for a T-shaped pole (H) in the upper horizontal beam part, and a screw hole 4 for screwing in the fixing bolt D in the center of the lower horizontal beam part 3.

Since this device has the same structure and function as described above, it is suitable for multi-spindle drilling machines that require frequent changes in the position of some rotary tools, and is simple in structure, easy to store, and easy to assemble. Moreover, it is possible to provide an assembly support for a spindle support arm in a multi-spindle drilling machine that allows easy positioning of a rotary tool and is inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a part of the spindle head of a conventional multi-spindle drilling machine, Fig. 2 is a perspective view of a part of the spindle head of a further improved conventional multi-spindle drilling machine, and Fig. 3 is a partially cutaway front view of a part of the spindle head of a conventional multi-spindle drilling machine. A front view of the multi-spindle drilling machine according to the invention in which the spindle support arm assembly support is assembled and attached to the bottom surface of the spindle head, FIG. 4 is a perspective view of frame A, and FIG. 5 is a view of the spindle head viewed from the bottom. FIG. 6 shows perspective views of other embodiments of the frame A, where A is the frame, B is the frame material,
C is a rod, D is a fixing bolt, E is a T-shaped bolt, F is a nut, 1 is an upper horizontal rod, 3 is a lower horizontal rod, 4 is a screw hole for bolt insertion, 5 is a hole for bolt insertion, a is the housing, e, e' are T
The shapes and grooves are shown respectively.

Claims (1)

[Scope of utility model registration request] It has an upper horizontal rod part 1 which is square in cross section and has a bolt insertion hole 2, and a lower horizontal rod part 3 which is also square in cross section and parallel to the upper horizontal rod part 1. Two frame bodies A each having a Holt screw hole 4 and having a height h slightly higher than the height H of the spindle support arm opening, and 82 rod members having a rectangular cross section.
Two rods C having a rectangular cross section, having a length L not shorter than the length 1 of the lower horizontal rod portion 3 of the frame A, and having a bolt insertion hole 5 in the center, and the bolts of the rods C. Two fixed poles (D) that pass through the insertion holes 5 and can be screwed into the bolt screws 4 of the lower horizontal rod portion 3 of the frame A, and the periphery of the lower surface of the casing a of the spindle head of the multi-spindle drilling machine. 1 or 2 rows of
An assembly support for a spindle support arm in a multi-spindle drilling machine, characterized in that it comprises at least two T-shaped bolts E and at least two nuts F1 that can be vertically fitted into the T-shaped grooves e and e' of a row.