Bandsaw machine

 

The invention relates to machine tools, namely, devices bandsaw machines for cutting various materials, such as ferrous metals, in particular, with hydraulic drive. The machine contains a band saw, located on the saw frame with the ability to change the feed in the cutting process, the hydraulic drive with hydraulic drive feeder, made in the form of two-way cylinder and regulator. The latter serves to regulate the pressure in the rod end of the hydraulic cylinder actuator feed and the feed rate of the saw frame. The use of the invention greatly simplifies the design of the machine. 1 Il.

The invention relates to machine tools, namely, devices bandsaw machines for cutting various materials, such as ferrous metals, in particular, with hydraulic drive.

Known bandsaw machines "Petzing & Hartmann (Germany) models Pehaka (see catalogue "Petzing & Hartmann - Pehaka"), the company "Do All" (USA) model-80 (see catalogue" Do All Power Saws"), copyright certificates of the USSR 440234 and 897466, RF patent 2151032.

All of these machines have an automatic change of the feed band saws in the cutting process according to antono-sawing machine according to the patent of the Russian Federation 2151032.

Known bandsaw machine with band saw, and a hydraulic actuator for automatic change of the feed band saws in the cutting process, depending on its deflection and is made in the form of a hydraulic cylinder actuator feed and servo spool, and the spool is connected one side of the mechanical chassis rail saws machine and with the top edge of band saws, and other hand - hydraulic Rodless cylinders with the cylinder chamber of the actuator feed. In addition, the feed may be regulated by the throttle.

The disadvantage of the machine is the complexity of the design.

The technical result is to simplify the design.

This is achieved by the fact that up to a maximum of simplified hydraulic circuit of the machine. From the scheme excluded the witness spool and some control devices.

Comparative analysis of the prototype allows us to conclude that the claimed bandsaw machine differs in that it has a very simple design.

Analysis of the known technical solutions for selected analogues in the study area leads to the conclusion about the absence of these symptoms that are similar to the essential distinguishing features of the claimed device, ukazanniye".

The invention consists in that the servo valve and the throttle labor supply is replaced by a flow regulator, which allows you to adjust the working flow and the force on the saw.

The operation of the machine illustrated in the drawing, which schematically shows the inventive machine with hydraulic drive system.

Band saw 1 stretched across two disks 2 and 3, of which the disk 2 is connected with the rotation drive and is the leading and the disc 3 - stretch. Saw blade tensioning disks manually by moving the tension disk 3 by means of the tension device 4. Disks 2 and 3 are mounted on the saw frame 20. The saw frame may be horizontal and to swing on the axis. Cut the workpiece 22 is clamped in the vise jaws 5 and 23, of which the sponge 23 is fixed, and the sponge 5 is driven by a hydraulic cylinder 6, the oil which is fed through the valve 8. Grip occurs when the electromagnet 10 and the brakes when the electromagnet 9. The system pressure of the vise is adjustable reducing valve 21 and controlled by a pressure gauge 24. Band saw on the site of the cut using the guide rollers 25 and 26 takes place in the vertical plane.

The oil in the hydraulic system served GidroMash pressure gauge 24. The valves 11 and 14 are used to provide different drive modes innings (electric saws, working feed, bend saws). The feed drive is a hydraulic drive feeder 7. Hydroregulation flow 13 serves to regulate the pressure in the rod end and to regulate the speed of movement of the piston rod of the hydraulic cylinder actuator supply 7.

Bandsaw machine operates as follows.

In adjustment mode, Press the button "hydraulic Actuator", this enables the control circuit and the pump 19.

The workpiece 22 is installed in the grip of the machine. When you click "Clip" turns the electromagnet 10 of the valve 8 and the oil in the Rodless cylinders, the cylinder chamber 6, the Vice closes, from the rod end of the cylinder the oil is drained into the tank. By pressing the "Supply of the saw frame include an electromagnet 16 of the valve 14 and the solenoid valve 12. Oil from the pump through the valve 14 is served in Rodless cylinders, the cylinder chamber of the actuator supply 7, and from the rod end drained through the valve 12 into the tank, there is a rapid supply of the saw frame. Configures the apparatus of the saw frame. When clicking on the button "Problem" turns the electromagnet 9 of the valve 8 and the oil flows into the rod cavity of gidrol is on the saw frame include the electromagnet 15 of the valve 14. Oil from the pump through the valve 14 and the check valve is served in the rod cavity of the actuator cylinder feeder 7, and Rodless cylinders cavity drained through the valve 14 into the tank, there is a rapid removal of the saw frame.

In semi-automatic mode, the Workpiece 22 is installed in the grip of the machine. Click "hydraulic Actuator", this enables the control circuit and the pump 19.

When you press the "Cycle" turns on the main motion drive starts electromatic 10 of the valve 8 and the oil in the Rodless cylinders, the cylinder chamber 6, the Vice closes, from the rod end of the cylinder the oil is drained into the tank. Turns on the electromagnet 16 of the valve 14, the oil from the pump through the valve 14 is served in Rodless cylinders, the cylinder chamber of the actuator supply 7, and from the rod end through the flow regulator (including through its adjustable choke) merges into the tank, is the supply of the saw frame and feed rate. When the frame lower position actuates the limit switch, which turns off the electromagnet 16 and includes an electromagnet 15 of the valve 14. Oil from the pump through the valve 14 and the check valve is served in the rod cavity of the actuator cylinder feeder 7, and Rodless cylinders cavity drained through the valve 14 into the tank, is that disables the main motion drive the electromagnet 15 of the valve 14, the electromagnet 10 and includes an electromagnet 9 of the valve 8, the oil flows into the rod cavity of the cylinder 6, the Vice opens, Rodless cylinders, cylinder cavity, the oil is drained into the tank. The cycle is completed.

This scheme allows to considerably simplify the design of the machine and acceptable for machines of small size.

Claims

Bandsaw machine, containing a band saw, located on the saw frame with the ability to change the feed in the cutting process, the hydraulic drive with hydraulic drive feeder, made in the form of two-way cylinder, characterized in that it is provided with a flow regulator for regulating the pressure in the rod end of the hydraulic cylinder actuator feed and the feed rate of the saw frame.

 

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