SU1454640A1 - All-purpose device for positioning workpieces in n/c machine tools - Google Patents

Abstract

The invention relates to the processing of materials by cutting, in particular, to devices for fixing parts on metal cutting machines.

Description

1

CNC machining. The invention makes it possible to shorten the tool changeover time. On the base plate 1, the guides 2 and 3 are fastened. On the guides 2 and 2 there are carriage 4 with the top 5 and bottom 6 rulers. The carriages 4 of the rulers 5, 6 on one side are connected by means of screw pairs 7 to stepper motors 8. The rulers 5, 6 are mutually perpendicular and one above the other and are provided with grooves 9. This arrangement of the rulers 5, -6 and grooves 9 forms the basic holes 10, in which the elements-pins 11 are installed. In this case, in the lower rulers 6 there are auxiliary grooves in which the fixing elements are installed. On the other hand, the rulers 5, 6 are connected to the guides 16, in which electromagnetic devices for fixing the rulers 5, 6 are placed. On the south-south guides, there are carriages 18 ,. . on which races

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bearing supports 19 are provided, equipped with stepper motors 20, and which are driven by means of screw pairs. Bearing supports 19 are interconnected by a power beam 22, on which carriages 23 are located, driven by means of screw pairs 24 and stepper motors 25; The carriages 23 are provided with clamping devices 26, which are pneumatic cylinders with rods and replaceable clamping elements. The drives of the carriages 4, 18, 23 and the electromagnets are connected to the CNC unit with which the remote control is carried out in automatic mode according to a given program. From the CNC, a command is issued to move the carriages 4 with rulers 5, 6 to a predetermined position. The base pins 11 are inserted into the holes 10, on which the processed part is placed and secured. 5 il.

one

The invention relates to the processing of materials by cutting, in particular, to devices for securing parts on metal-cutting machines, mainly CNC.

The aim of the invention is to reduce the changeover time of the device.

FIG. 1 shows an adaptable fixture, a plan view; in Fig.2-10 the same, front view; in fig. 3 shows section A-A in FIG. one; in fig. 4 shows a section BB in FIG. one; in fig. 5 shows a section B-B in FIG. one.

The universal fixture is installed in the following way.

On the base plate 1, the guides 2 and 3 are fastened. On the guides 2 there are carriages 4, which are capable of independent movement, with 20 upper arms fixed on them

5 and the bottom 6 rulers. The carriages 4 on one side are connected by means of screw pairs 7 to stepper motors 8. Rulers 5, 6 are arranged par-.25 but also mutually perpendicularly one. Under the other and have longitudinal grooves 9,

This arrangement of lines 6, 5 and grooves 9 forms base holes 10, along which base elements, shtyri 11, are installed. In the lower rulers 6 there are auxiliary grooves 12, in which sets of fixing elements, plates 13, are installed, and plates 13 are made in the form of cut along the axis of the cylinder, spring-loaded with individual springs 14 and closed with lids 15.. This design and arrangement of the locking plates 13 allows fixing the base pins .1 on the rulers 5, 6 for their entire length. On the other hand, lines 5, 6 rest on rails 16 in which electromagnetic devices for fixing lines 5, 6 are placed, consisting of electromagnets 17 with conductors. The carriages 18 are placed on the directions 3, on which the bearing supports 19 are located. The carriages 18 are equipped with stepper motors 20 and are set in motion by means of screw-pairs 21. i.e.

They are a power beam 22 on which the carriages 23 are located, driven by means of screw pairs 24 and stepper motors 25. The carriages 23 are also equipped with clamping devices 26, which are pneumatic cylinders 27 with rods 28 and interchangeable clamping elements 29. All the main elements of the device : drives of carriages 4, 18, 23, electromagnets 17 are connected by a numerical control unit 30, which allows remote control in automatic mode according to a predetermined program.

Universal fixture works as follows.

The fixture is placed on the machine table and secured. From the software device 30, a command is sent to set the rulers 5, 6 to the desired position. The stepper motors 8, 20, 25 process this command and move the carriages 4, 18 with rulers 5, 6. After the rulers 5, 6 are installed, the base pins 11 are inserted into the set position in the formed basic holes 10. The alignment of the base pins 11 is made by the grooves 9 , fixing them - by placing in the auxiliary grooves 12 sets of fixing plates 13, made in the form of a cylinder cut along the axis, spring-loaded with individual springs 14 and closed with clamps 15. Such a design of fixing elements - plates 13 allows s base fixing pins 11 on the entire length of lines 5, 6, and create due to the tightening force of springs 14 required dp retaining pin base 11 at the time of pickup parts 31 after completion of machining.

The installation of the base pins 11 can be performed by both the operator and the robot. After installing the base pins 11 on them install the details

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five

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31. After the installation of the part 31 according to a predetermined program, the carriage 23 of the pressing device is set in motion, while the power beam 22 moves and takes the required position.

After reaching the programmed position, removable clamping elements 29 are attached to the rods 28, air is supplied to the pneumatic cylinders 27, and the rods 28 clamp the part 31 in the fixture.

The fixation of all the carriages 4, 18, 23 is carried out by means of self-braking screw pairs 7, 21, 24. After the installation and securing, the program is entered for its processing according to a given technological cycle.

invention formula

A universal device for installing parts on CNC machines, comprising a housing, carriages and rulers with basic elements, while the carriages are mounted in the housing with the possibility of movement and fixation, characterized in that, in order to reduce the time for readjustment, the carriages are rigidly connected to rulers and installed along the perimeter of the housing with the possibility of independent one relative to another movement, with the rulers placed in pairs, and in each pair mutually perpendicular and one above the other, and dnaznachennye

To accommodate the base elements, the longitudinal grooves, and in each lower ruler, on both sides parallel to the specified grooves are made auxiliary grooves designed in dp

placing inserted into the device and made in the form of truncated fixed 1X elements cut along the axis of the cylinder.

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Claims (1)

Claim A universal device for installing parts on CNC machines, comprising a housing, carriages and rulers with basic elements, while the carriages are installed in the housing with the ability to move and fix, characterized in that, in order to reduce the time for readjustment, the carriages are rigidly connected to the rulers and installed around the perimeter of the housing with the possibility of independent one relative to the other moving, while the rulers are placed in pairs, and in each pair - mutually perpendicular and one above the other, and in the rulers are made longitudinal grooves meant to accommodate the basic elements, and in each lower ruler on two side sides parallel to the specified grooves, auxiliary grooves are made, designed to accommodate the spring loaded locking elements cut into the device and made in the form of cut-off along the cylinder axis. Aa Fig.Z 5-6 FIG. At B-V roverlinil