RU2193949C1 - Number program control vertical double-spindle lathe - Google Patents

Abstract

FIELD: machine engineering, namely working parts such as bodies of revolution from steel, cast iron or non-ferrous metals in automatic mode depending upon their size, mass and design. SUBSTANCE: lathe includes frame, rests and stationary tables. In order to set arrangement for given part allowing to select variant of motion along technological line with maximally admissible efficiency and accuracy of working, lathe is provided with movable platforms mounted on rests. It is possible to mount on each platform spindle stock or tool holder or manipulator-hand. It is possible to mount on each stationary table charging conveyor or spindle stock or manipulator-hand or tool holder. EFFECT: improved design. 1 dwg

Description

 The invention relates to mechanical engineering. The machine can be used for processing parts such as "bodies of revolution", steel, cast iron or non-ferrous metals in automatic mode in various types of layout depending on the size and weight of the products.

 Known double-spindle lathe designed for machining parts fixed in chucks mounted on coaxial spindles [1]. The disadvantage of the machine is the rigid technological chain of movement of a strictly defined workpiece, the inability to switch to another sequence of operations in the technological chain and the processing of parts with different masses.

 Known lathe company HESSAP [2]. Two calipers are located on the horizontal guide - on one of them there is a spindle head against which a fixed tool holder is mounted, on the other there is a box with a tool holder, against which the spindle head is vertically located. In the final position, the headstock can receive the workpiece from the conveyor. Accordingly, the manipulator in the tool holder can lay the workpiece on the conveyor on the other side of the machine.

 This arrangement does not allow to achieve maximum performance on small dimensions of parts, since it is suitable for heavy parts, and does not also allow you to choose the option of moving the product along the processing chain loading - processing cycle - unloading of the finished part.

 Known is selected as the closest analogue to a vertical double-spindle lathe with numerical control, containing a bed, supports and fixed tables [3].

 A disadvantage of the known machine [3] is a rigid technological chain that does not allow to process parts weighing more than 15 kg.

 The objective of the invention is the complete turning of various parts such as "bodies of revolution" in an automatic mode in a layout that allows you to choose for this part the option of movement along the specified process chain, providing the highest possible productivity and processing accuracy.

 The problem is solved by the fact that the vertical double-spindle lathe with numerical control, containing the bed, calipers and fixed tables, is equipped with movable platforms mounted on the calipers and made with the possibility of mounting on each of them a headstock, or tool holder, or arm-arm while each fixed table is configured to mount a loading conveyor, or a headstock, or a manipulator arm, or a tool erzhatelya.

 The drawing shows a General view of the machine.

 On the bed 1 of a vertical double-spindle turning machine, two calipers 2 are mounted, moving horizontally independently of each other. A movable platform 3 is mounted on each of the calipers on the rails, on which, depending on the selected movement pattern of the part along the process chain, a headstock 4, or tool holder 5, or a manipulator arm 6 can be installed. On the table 7 of the machine bed, respectively, a loading conveyor 8, or headstock 9, or manipulator-arm 10, or tool holder 5 (see drawing).

 For the complete processing of parts of various weight and cutting times on the machine, the most productive movement pattern of the workpiece along the technological chain, time characteristics of the movement of the working bodies of the machine and cutting conditions are selected.

 Workpieces weighing less than 15 kg with the highest productivity are processed when constructing the machine layout, when loading conveyor 8 is mounted on the bed 1 (from right to left) to feed the workpiece into the processing zone, then a spindle head 4 is mounted on the right platform 3, capturing the workpiece from conveyor 8 and moving to the tool holder 5 mounted on the right table and intended for machining conventionally half of the part.

 The pre-machined part is installed in the standby position 11 and then the manipulator-arm 10 mounted on the fixed table 7, the workpiece is fed to the loading position 12. The spindle head 4 mounted on the left platform 3, captures the part from the loading zone 12 and mounted on the left stationary table tool holder 5 performs the final machining.

 At the end of the processing cycle, the finished part with the headstock is installed on the left conveyor 8 mounted on the bed 1, to remove it from the processing zone.

 For a workpiece weighing more than 15 kg in order to obtain maximum productivity on the machine, a layout is selected that takes into account the cutting time and weight. The headstock 9 are mounted on a fixed part of the right table. The tool holder 5 and the manipulator-arm 6 are mounted on the right movable platform 3 to capture the workpiece from the loading conveyor 8 and install the headstock 9 into the spindle, then the surface of the part is machined using the tool holder and is free of spindle clamping elements. A spindle head 4 is mounted on the left movable platform 3, designed to capture the part processed by the spindle head 9 with its spindle, and then, moving the part to the tool holder 5 mounted on the left table, final processing is carried out.

 After the processing cycle, the finished part spindle head 4 is installed on the left conveyor, designed to remove it from the processing zone.

 To exclude idle time of one of the spindles due to the inability to combine the machining time of individual parts-blanks, the layout diagram of the machine can be selected with the exception of the right conveyor 8 and the manipulator-arm 6, designed for automatic loading of parts. In this case, the workpiece can be installed directly on the spindle of the headstock 9. Next, the movement pattern of the workpiece is repeated.

 For processing workpieces, where processing from one installation is required, the layout of the machine can be presented with the headstock 4 mounted on a moving platform, on a fixed table of the tool holder 5. Next, the machined part is removed from the processing zone using the left conveyor.

Literature
1. Patent RU 2113319 C1, 06/20/1998.

 2. Patent OE 4316166 A1, 11.17.1994.

 3. Utility model RU 12806 U1, 10.02.2000.

Claims (1)

 A vertical double-spindle lathe with numerical control, containing a bed, calipers and fixed tables, characterized in that it is equipped with movable platforms mounted on calipers and made with the possibility of mounting a spindle head, or tool holder, or arm-manipulator on each of them this each fixed table is made with the possibility of mounting on it a loading conveyor, or a spindle headstock, or a manipulator arm, or tool holder.