RU2005004C1 - Hole drilling jig - Google Patents

Description

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ABOUT

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p I) ba 3 Movei ustanig igglm on the UPDATED method described 12 il, i t jpw USP -to lines The invention relates to machining, in particular to machine tools for drilling a group of holes in parts without preliminary marking, mainly based on a flat surface on the body detellh, and can be used in instrumentation.

A conductor for drilling holes is known, assembled on the basis of elements of a set of universal prefabricated devices (USP).

The known conductor makes it possible to drill a group of holes with an intercenter distance equal to the width of the guide supports by. of which the conductor strips are installed, or smaller than the width of the guide supports, in this case, it is necessary to use measuring rings that are installed between the conductor strips and tightened with one common bolt. The assembly of the conductor assembled from the USP elements is cumbersome, the assembly technology is complicated. Moreover, the more the conductor strips are installed on the conductor, the greater the error accumulates at the points farthest from the base support.

A conductor for drilling holes is also known, which contains a rectangular base plate with T-shaped grooves, conductor p / n and mounted on the guide supports, and their fasteners); as well as a mounting plate fixed to the base plate, along the longitudinal axis of which there is a rectangular blind, in which with mounting movement there are guide bearings made by gf / s-matics, the upper bases of which are equal to the width of the conductor strips installed, while in each support, perpendicular to the longitudinal axis of the upper base there are protrusions located on both sides of the axis. moreover, the supports are made different in height from the condition that the protrusions of each support are placed in after the next support, when approaching to an intercenter distance equal to the width of the conductor strips.

The disadvantages of the known conductor include the complex assembly technology of individual elements, since the number of assembly units is quite large due to the different types of supports having the same functional purpose. These supports are distinguished by design and dimensions are aggregated among themselves according to a selective feature.

The purpose of the invention is to simplify the assembly technology of the conductor by reducing the number of assembly units while ensuring the necessary accuracy of fixation of the conductor strips.

This goal is achieved by the fact that in the conductor for drilling holes containing a base plate with seats, conductive strips mounted on the guiding bearings of a prismatic shape with protrusions, mounting strips with longitudinal grooves, and the upper bases of the guiding supports are equal to the width of mounted on them conductor strips 15, and the guide supports are located on the installation strips with the possibility of movement, ensuring the placement of the protrusions of each support in the neckline of the subsequent support when they come together On the center-to-center distance equal to the width of the conductor strips, two longitudinal V-grooves are made symmetrically to the longitudinal groove on each mounting plate, and on the surface of each guide bearing that is mated to the mounting strips, the grooves corresponding to the grooves of the mounting strips are made, and the grooves on mounting rails and guides are designed for

0 the cylinder keys are inserted into the conductor.

In FIG. 1 shows the proposed conductor in working position with a set of conductive strips for drilling holes

5

with center-to-center distances equal to

the width of the conductor strips, a general view; NC FIG. 2 - section aa ne fig, 1; in FIG. 3 - installation strip, axonometric; in FIG. 4 - guide bearing, main view;

h 0 in FIG. 5 - same, top view; in FIG. 6 - a cylindrical key; in FIG. 7 - guide bearing with a cylindrical key, axonometric; in FIG. 8 - Assembly of the proposed conductor - installation

5 strap with two supports installed in a position that provides the smallest possible center-to-center distance between the holes in the workpiece, equal to the width of the conductor strip, axonometric; Fig. 9 is a mounting unit for mounting the mounting strap directly to the USP base plate and with a removable clip with a screw mechanism and a conductive strip with a 5 mounting bracket mounted on the bar (embodiment); in FIG. Ш - the same, top view; in FIG. 11 shows an exemplary embodiment of a mounting unit for attaching a mounting strip to a USP base plate through USP supports; NC FIG. 12 is an example of the installation of the mounting mount

. directly to the base plate У С, О-4 /,

The hole drilling conductor comprises conductive strips 1 fixed to each of the respective supports 2, which are placed on the mounting strip 3 and secured to the cylindrical keys 4 with the possibility of displacement of the supports 2 when changing the conductor. When assembling a conductor from assembly units, the conductor elements 1, the guiding supports 2 and the mounting plate 3 are pulled together with a slotted bolt 5, and for the final elimination of the gap Ј (see Fig. 2), a removable a clamp 6 with a screw mechanism (see Fig. 9), which creates additional force for the bolt 5 when the elements 1,2,3 are pulled together after adjusting the conductor strips 1 to the required size. Moreover, the standard guide supports 7 can be placed on the mounting plate 3, for example, from elements of the USP system (see Fig. 1), with fixation according to standard rectangular keys 8 also from elements of the USP system with conductor plate 1, Elements 1.3 , 7 are also tightened together by a bolt 5.

The mounting plate 3 with the elements placed on it is fixed on the base plate O (standard, from the elements of the UC system with standard dowels 8 (see Fig. 9} and is pulled together with it (base 9) by the slot bolt 10 facing the saw the base of the plate 9 (USP) through the threaded je hole.

As an embodiment, the installation (3 with placed on it elemen-savs / i must have been placed on a standard1) base-fi plate 9 from another system, VCnO-U (see Fig. 12).

Longitudinal grooves 11 are made on the conductor weeps 1 for mating with the bracing protrusions 12 made on the upper base of each support 2 (see Fig. 7.8).

The guide support 2 is made in a prismatic shape with a developed base surface 13 that interacts with the surface of the mounting plate 3. The base surface 13 of the guide support 2 is formed by the protrusions 14 and the side surface of the support body 2. The surface 15 of the support 2, along which adjacent supports 2 of the support they are matched to each other in the case of the placement of the conductor strips 1 to the smallest possible center-to-center distance, crusted by the width of the conductor strips, provided with the ends of the protrusions 14 and the ends of the support body 2. the lantern at the smallest possible intercenter distance between each other, the protrusions 14 of one support 2 enter the cutouts 16 in the housing of the adjacent support On the lower base of the guide

supports 2 symmetrically to the longitudinal axis of the body of the support 2 are made exact grooves 17 of a V-shape, mating with the corresponding V-grooves of the mounting plate 3 and forming them

0 seats for the dowels A, secured with each step rivet 18 (see Fig. 7.2).

In the guide support 2, a through hole 19 is made for the mounting bolt

5 to 5 by means of which the conductive strip 1 and the guide support 2 are attached to the mounting strip 3.

In the center of each groove 17 passing along the protrusions 14 of the support 2,

0 to one hole 20 (see Fig. 4) for installing a stepped rivet 18. Moreover, the diameter of the hole 20 corresponds to the diameter of the hole 21 in the cylindrical key 4, in which in addition to the hole 21

5, an opening 22 is made coaxially with it for a full approach of the stepped rivet 18 (see Fig. 6.2).

The mounting strip 3 is a flat element with a longitudinal accurate

0 a T-shaped central groove 23 for interfacing with standard guiding operations 7 (e.g. from the USP system), as well as for mounting fixing bolts 5 therein.

6 Lateral surfaces of a groove 23 in a level

3 serve as a surface-based one, interacting with the lateral surfaces of the square key 8 (from the USP system), mounted on the support 7 (see, Figs. 3,1,9).

0 In addition, for pairing with the guide supports 2 on the mounting plate 3 symmetrically to the longitudinal groove 23, two longitudinal grooves 24 of a V-shape are made, mating with the corresponding

5 V-shaped grooves 17 on the guide bearings 2 and forming with the latter seats for the cylindrical keys 4,

On the lower base of the strip 3, the seats / joints of the docking with a standard base plate 9 or with supports of universal prefabricated devices installed on this plate 9 are made (for example, from USP, USPO-U or US5 software systems, see Fig. 12, eleven)

In addition, on the lower base of the strap 3, there are seats for fasteners for fastening the strap to 3 elements of the USP USP V USO systems (see Fig. 11 12)

In FIG. 3,8,12 show two examples of the seating on the lower base of the mounting strip 3: in FIG. 3, longitudinal and transverse U-shaped grooves are made for a standard right-angled key. 8 (from the USP system); in FIG. 12, longitudinal and transverse V-grooves 25 are made for cylindrical slope-km 4.

To fasten the strap 3 with the elements of the USP system, two T-grooves 26 are made for the mounting bolts 10 (see Fig. 3),

As an embodiment, Fig. 12 shows a mounting strip 3 with threaded holes for a mounting bolt. 10, In addition, when aggregating, it is possible to use other elements of existing universal prefabricated devices, including USPO.

A removable clamp 6 with a screw mechanism (see FIG. 9) for pre-clamping the conductive strip 1 with the guiding spore 2 to the mounting strip 3 and g, followed by tightening these elements with the bolt 5 contains a grip 27 with swinging supports 28 and groove bolt 29 with nut 30.

When the adjacent supports 2 g. 1 approach each other, the step 14 of one support 2 enters one 16 of the other support 2.; this has the side surfaces 5 of the housing of the support 2, i; .u -;:. and the g-case, which is once across the width of the conductive strip 1, is in contact with the corresponding distal surface 15 of the housing of the adjacent support 2, while providing a minimum RIZ and a center distance equal to the width

CONDUCTOR PLZN (1.

Depending on the width AND of the conductive strip 1 (see Fig. 1.7} m, therefore, the width b of the support body 2, the latter are of several types, differing in the width of the housing, Hs, the upper base of the QA / auxiliary support 2 and is clean. we 12 mean the width equal to the width of the groove 11 on the conductor plate. 1.

The total width o;: - z ;: ./., of the support 2, the ratio will be determined (see Fig. 5. /)

where H is im.-sha of the final n / ic::, i is the length of the protrusion., 14 b support: ii-depth Jb: p;: 53 10 k and support 2, Hi. P r;: s t 11 mg, l and; - i a c to /; and n d. r w c h e

and / to::: will be determined from

where h is the width of the bridge, is equal to h, i.e. equal to the difference between the width of the body of the support 2 and the depth of the cutout 16.

Moreover, the length (in a different coordinate) of the support 2 of each type corresponds to the width of the mounting plate 3.

For the joining of the support 2 with the strap 3 through the cylindrical keys A, the center-to-center distances of the grooves 17 and the support 2 and the grooves 24 on the strap 3 are made equal to each other.

When the fastening bolt 5 fastens the elements 2 and 3 together, the initial gap e-in the connection closes at a certain tightening force of the joint. The gap k is eliminated at the junction due to elastic contact deformation of the cylindrical key 4 with the walls of the V-shaped grooves in the elements 2 and 3. This eliminates the gap between the key 4 and the walls of the U-shaped grooves 17 and 24, which ensures that the conductor is not rotated straps 1 with respect to the vertical axis when processing holes on the workpiece, which means that high accuracy of the center-to-center distances of the work holes in the workpiece is guaranteed.

Since the diameter of the bolt 5 depends on the width H of the conductive strip 1, and therefore on the width in the housing of the support 1. for a particular conductive strip 1 with a certain width, a fixing bolt 5 of a certain diameter is also selected accordingly. However, in the event that such a bolt is not able to create a force allowing to eliminate the gap, an additional removable clamp b is used (see Fig. 9), allowing the support 2 to be squeezed until it is completely in contact with the bar 3.

Conductor assembly example. The conductor for drilling holes is assembled on the USP 9 plate, fastening the mounting plate 3 with the plate 9 with a bolt 10. installed in the T-groove 26 of the strip 3 and passing through the threaded hole on the USP 9 plate. The plate 3 with the plate 9 is fixed with square keys 8 Alternatively, the strap 3 can be installed on the plate 9 through the intermediate spores of the USL (see Fig. 11), which allows you to raise the strip 3 above the plane of the plate 9 to the desired height, and pulling the strip 3 (through the support of the USP) with the plate 9 are carried out in the manner described.

The conductor strips 1 are mounted on the opera 2, set when dimensioned in a known manner and fastened with a bolt 5 to the stripe 3, and the bolt 5 is mounted on the T-groove 23 of the stripe 3. Guide support 7 of the USP with the conductor

The strap 1 is also fastened to the strap 3 with a blade 5 and secured with keys 8.

The support 7 is installed on the strip 3 in cases where the center-to-center distance between the conductive strips 1 is significant or if there is no longitudinal groove 11 on the conductive strip (in the conductive strips standard from USP systems, etc.).

If the conductor bar 1 is installed on the bar 3 with a support 2 of small width with the corresponding small bolt 5, then after adjusting the conductor bar 1 to the required size and pre-tightening the bolt 5, a removable clamp 6 (see Fig. 9) and a gripper 27 press the support 2 with the conductive strip 1 until full contact with the strip 3, select the gap Ј. After that, use the socket wrench to tighten the nut on the bolt 5.

Then, the removable clip 6 is withdrawn from the strip 3 for mounting the next bolt 5 with the support 2 on the strip 3 and the assembly of the conductor is continued as described.

A workpiece is mounted on the conductor thus assembled and fixed in a known manner.

The proposed conductor has the following advantages: a significantly simpler assembly technology by reducing the number of assembly units, namely, instead of the three types of guide bearings of the prototype in the proposed conductor

there is one type of guide bearings, differing from each other only by the width of the upper base, which is selected depending on the width of the conductive strip; higher accuracy of fixation of conductive strips due to the use of V-shaped grooves and cylindrical keys. In addition, the proposed conductor provides for the possibility of using elements of various standard systems (USP, USPO) during its assembly.

(56) Copyright certificate of the USSR Ne 1152720, cl. B 23 B 49/02, 1983.

Claims (1)

The claims CONDUCTOR FOR DRILLING HOLES, containing a base raft with seats, conductive strips mounted on guiding supports of a prismatic shape with protrusions, upright strips with a longitudinal slider and, moreover, the upper bases of the casing of the supporting supports of the width of the conductor mounted on them strips, and the guide supports are located on the installation strips with the possibility of movement with the provision of placement Aa (ri & 2. the protrusions of each support in the neckline of the subsequent support when they approach the inter-center distance. The distance is equal to the width of the conductor strips, characterized in that on each mounting bobbin, two longitudinal v-grooves are made symmetrically to the longitudinal groove, 3 for which it is mated to the surface mounting strips each guide support has grooves corresponding to those of the mounting plates, wherein the grooves on the mounting plates and the guide supports are designed to accommodate the cylindrical ones inserted into the conductor. dowels. J-Ј Jt "S N fr f3 fmg. 7 , / & ± g e: & at 9g  Jusiu os / 17 f tf & ff ( I