SU1481032A1 - Method of adjusting program-control machine-tool - Google Patents

Abstract

The invention relates to mechanical engineering and is intended to automate the setup of program-controlled machine tools, including single and multi-spindle machines, operating both in standalone mode and as part of flexible manufacturing systems. The aim of the invention is to improve the accuracy of setting and basing the workpiece by eliminating the installation error of the clamping element. Before processing the new batch of parts, the fixing elements are inaccurately installed and fixed on the base plate of the fixture, which are then machined with a tool using an axial feed. On multi-spindle machines, machining of the clamping elements is carried out by all spindles at the same time. 1 hp ff, 4 ill.

Description

The invention relates to mechanical engineering and is intended to automate the configuration of machine tools with programmed control (PU), including single- and multi-spindle machines operating to-a-ka in stand-alone mode, and as part of flexible production systems (GPS) using universal adjustment tools. ).

The aim of the invention is to improve the accuracy of setting and basing the workpieces by eliminating the installation error of the clamping element.

FIG. 1 shows a setup diagram for a two-spindle machine with PU; in fig. 2 is a schematic of processing the base elements in a double-spindle machine tool with PU based on the internal surfaces of products; in fig. 3 is a schematic of processing of clamping elements with a CND in a single-spindle machine based on the external surfaces of products; in fig. 4 is a diagram of the base part.

The machine is configured as follows.

Before processing a new batch of parts 1 on the base plate of the device 2, the base elements 3-5 are inaccurately mounted and fixed with fastening elements 6, the screw heads of which can be placed in the T-slots of the base plate of the device 2. Base elements 3-5 can be made in the form of sleeves. A boring mandrel 8 with a microscrew is inserted into the first spindle 7 to fine-tune the reach g of the cutting tool 9 (boring tool). According to a given program, the base elements 3-5 are processed in the machine coordinate system. Coordinate systems are designated as follows: HOSOCUS - coordinate system of the machine; - coordinate system of the first workpiece; About pr Z nf. - coordinate system of the second workpiece; Opr - zero point of the program for the first part; RR is the zero point of the program for the second part; Os - zero point of the machine; g is the distance from the spindle axis to the tool tip (departure). FIG. 1 shows: HsOs - coordinate system of the machine;

(L

Ј

oo

with y

Xiif O nf Y is the coordinate system of the first part; - coordinate system of the second part; OO -O-Oz-Oz-O4-OB-O smchn - the trajectory of the first tool; OO-O-O2-O-O4-O'-O. in-trajectory of the second tool; O ““. IM - the tool change point located in the first spindle; Osmin is the tool change point located in the second spindle; Oo, Oo - the initial (zero) position of the spindle.

The first spindle 7 in the XcOtyt plane moves, for example, along the path O0-O-Oz-Oz-O4-O5-O. Then, the already adjusted boring mandrel is relocated to the second spindle 10, the base elements 3-5 for the second part are processed using the same program, the second spindle in | (the HGOSU plane passes through the path OO-OG-O2 O Ol-O, - , - Osmc. "After processing the base elements 3-5, co-operative systems",.,,,., H, .., topics of details, are formed; HirOir h-and .vv and p t vf,

the centers of which OCP and shift relative to the characteristic points 0 (On the path of movement of the boring mandrel when processing bases on the Xc and Us axes by the same value d - setting value of the bit in the boring mandrel. Before processing the details 1, the program management system adds the value r, which is automatically taken into account when processing the control program.

Coordinate systems for the implementation of the setting method on a single-spindle machine are indicated: XCOSC - machine coordinate system; Oak Weir - Coordinate Program System; Os - machine zero; O-ir - program zero; Os. „- tool change point; A and B - the position of the cutting tool relative to the zero point of the machine OC, respectively, on the axis X, - and V in the processing of bases 11-13; RVH - tool radius; Hopr and WIDR distance from the zero point of the machine OC to the support base 11 and the guide bases 12 and 13; A and B are the distances from the position of the cutting tool at the time of processing the bases, respectively, in the direction of the axes Xc and Cc to the point of tool change Os.a; X0-ir and Y are the distances from the tool change point OCf, respectively, to the support base 11 and the guide bases 12 and 13; Ao-O | -Oj-Oz-Ot.j, - tool paths.

0

0

five

five

0

five

0

five

Setting up the machine with PU is as follows.

Before processing the new batch of parts, the heads of the fastening elements 6 are inserted into the T-grooves 14 of the device 2, mounted on the table 15 of the machine with the PU, fixing and fixing the clamping elements are fixed. If necessary, the clamping elements can be mounted on the support sleeves 16. Then, according to a given program, in the machine coordinate system HOSCOS are processed, for example, using an end mill of base 11-13 along the Os-Ot-Oz-Oz-Os path, while the formation of the coordinate angle, the vertex of which is the zero point of the program O, is the main point when programming part processing.

After processing of the clamping elements, the cutting tool 9 from point O-, according to the program, moves to the point of tool change Os.i, which can be selected on the basis of the convenience of servicing the machine when changing workpieces, tools and size control.

Thus, the method allows you to automatically configure the machine with PU by creating a coordinate system, Y, by processing the bases on which the workpiece is based. Wherein ; Xon A + RL;

 + RW Formula of Invention

. The method of setting up a machine with a software control, which consists in installing a fixing base element according to a program, characterized in that, in order to improve the accuracy of setting and basing the part, the fixture fixing elements are processed according to the part program, after which the coordinate systems of parts are formed, whose parameters are shifted relative to the characteristic points of the tool movement trajectory when processing the bases by the amount of the tool setting.

2. A method according to claim 1, characterized in that, in order to reduce set-up time when operating on a multi-spindle machine, the processing of the clamping elements is carried out by all the spindles at the same time.

Fig.

etc

Os.pts

eleven

WITH

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Claims (2)

Claim 1. The method of tuning the machine with software control, which consists in installing the base element of the device according to the program, characterized in that, in order to improve the accuracy of setting and basing the part, the base elements of the device are processed according to the program for processing the part, and then coordinate systems of parts are formed, the parameters of which offset relative to the characteristic points of the tool path when processing the bases by the value of the tool settings. 2. The method according to π. 1, characterized in that, in order to reduce the setup time when working on a multi-spindle machine, the processing of the base elements is carried out by all spindles simultaneously. FIG. 2 Fig. ^