SU837601A1 - Marking-out free stand - Google Patents

Description

(54) DISASTERABLE STAND

one

The invention relates to mechanical engineering; In particular, to equipment for processing mounting holes in elements of various sections of long products, such as beams of span structures.

A conductor stand is known, comprising a frame with mounting holes and conductor plates mounted on frames, one of which has the possibility of longitudinal movement 1.

The disadvantage of such a stand is considerable laboriousness associated with accurate measurements of lengthy workpieces during the changeover of the stand to other sizes: processing, as well as the limited ability to move the conductor plates within i 60 mm.

The purpose of the invention. - improving the accuracy of the location of the manufactured mounting holes of the beams of the superstructures and simplifying the setup of the stand for any size of products.

The goal is achieved by the fact that the movable frame with the conductor plate mounted on it is provided with mounting strips in which mounting holes are made, framed, en-axially aligned with the mounting holes of the frame and with the same pitch, as well as mounting holes located along the coaxial mounting holes of the frame , but with a different pitch, the ratio of the steps (A) of the mounting holes of the frame, the steps (B) of the mounting holes of the frame and the steps (C) of the mounting holes of the frame

0 strips, coaxially with the installation holes of the frame, is

C - A 1

B - A 10

The invention is illustrated in FIG. 5, where: FIG. Figure 1 shows schematically the non-marking stand, general view; .on FIG. 2 — node 1 in FIG. one.

The frameless stand consists of 0 bed 1 with mounting holes located at a step A, two conductor plates, a fixed 2 fixed by the frame 3 to the bed frame, and rearranged 4 fixed on the frame 5. The frame 5 has mounting holes B (A + 10) mm and is mounted on them on the mounting bars 6 with the fixing pins 7. The mounting bars 6 are fixed along one of the mounting

holes located on the bar in increments of C (A + 1) mm, on the frame with the help of fixing fingers 7.

The job of rearranging the conductor plate is to set the size L between the conductor plates. The workpiece 8 is placed on the stand. The mounting strips 6, together with the frame 5, are rearranged on the base 1 by an amount that is a multiple of step A of the mounting holes of the base frame and fixed by interchangeable ones. pad 7 on one of the installation-. The mounting holes of the mounting plate located at a step C. The frame 5 is rearranged relative to the mounting strip by a multiple of step B in the arrangement of the mounting holes of the strip and the frame.

Thus, the required size between the conductor plates 2 and 4 is assembled by the steps of the mounting holes of the frame, the mounting bar and the frame according to

 + Bx K, j (C-A) x Kz, where K, K are the numbers of steps taken

respectively bed and frame; : °

(C-A) - the difference in pitch of the coaxial holes of the mounting plate and the frame; K. is the number of accepted values (С-А).

The setup of the stand for a given size is made by selecting the values of the integers K, Kz at constant вели leads of A, B, and C.

The number of steps A of the mounting holes of the frame is equal to the number of hundreds of the number specifying the distance between the conductor plates (the specifying number), minus the number of tens of this number.

The number of steps In the mounting holes of the frame K is equal to the number of tens of the specifying number. K - number of values (С-А) - equal to the number of units of the specifying number (if the number of units of the specifying number does not exceed five) - or the number of units missing to the full subsequent ten of the specifying number (if the number of units of the specifying number equals or exceeds five in this case, the number of steps A decreases by 1, and the number of steps in increases by 1,

; EXAMPLE 1: B, 110;

For the master number 1973

K. 19-7 12;

to 7;

K 3. L 100 X 12+ 100 X 7 (101-100) x 1200 + 770 + 3 1973

Fixing the mounting plate on the frame for mounting holes must be offset back

(in the direction of the fixed conductor plate) on seven steps In 110 mm.

Fixing the mounting plates on the frame must be made on the 12th installation hole of the STEELING with a step A 100 mm and on the third hole from the middle of the mounting plates back (towards the stationary X-plate) with a step of mm (the average installation hole of the mounting plate with a step C) do not accept, but consider only steps).

EXAMPLE 2. For the prefix number 11987.

K 119 - 8-1 110; К Кз 10 - 7 3. L 100 X 110 + 110 X 9- (101-100) X 3 11000 + 990 - 3 11987 The fixing of the mounting bar on the frame must be shifted back by 9 steps; fixing the mounting plate on the frame with 110 holes in the frame and the third hole from the middle of the mounting bar forward.

Claims (1)

Invention Formula A stand-up stand containing a frame with mounting holes and conductor plates mounted on frames, one of which has the possibility of longitudinal movement, characterized in that, in order to improve the accuracy of the location of the mounting holes and simplify the setup of the stand for any size of workpiece, the movable frame is provided with mounting strips in which the mounting holes are made, which are located coaxially with the mounting holes of the frame and with the same pitch, as well as the mounting holes, located conjugated coaxially fitting holes of the frame wherein the ratio steps of said openings is selected from the accounting : C - A 1 B - A, 10. h where a is the pitch of the mounting holes beds; , B - pitch of mounting holes of the movable frame and mounting holes aligned with them; , C is the pitch of the mounting holes of the mounting plates coaxially with the mounting holes of the bed. Sources of information taken into account during the examination 1. Mamlin, G.A. Manufacturing structures of steel bridges. M., Transnopt, 1976, p. 297-299, Figure 6.15. ff