Device for spring contact hardening

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used in production and application of springs at industrial enterprises. Proposed device comprises top and bottom inserts, barrel to accommodate said inserts and tested spring, and punch with spherical surface to get in contact with that of top insert. Bottom insert is fitted to rotate about barrel axis while top insert rotates and displaces relative to barrel axis and deflects from punch axis. Said inserts have circular grooves at their ends. Diameter of said grooves equals spring ID while groove depth makes, at least, spring turn height. Barrel ID varies from contracted spring diameter to coiled spring diameter. Top insert and punch are coupled by stepped screw with provision of clearance between screw body outer surface and that of holes in inserts and between screw head and insert mating surface.

EFFECT: higher efficiency of spring hardening.

 

The invention relates to mechanical engineering and can be used in devices for increasing the bearing capacity and operating characteristics of the springs using the methods of plastic processing of metal. Can be used in industries that manufacture and use spring - military-industrial complex, machine-building, aircraft building, automotive industry, agricultural machinery.

The known device for contact samevolume springs described in the copyright certificates of the USSR№№198747, 348792, 419660, 486233, 643684, 815346, 825253, Pat. EN 2251036, Pat. EN 2251037, Pat. EN 2286556, Pat. EN 2296968, Pat. EN 2392083, Pat. EN 2393042, Pat. EN 2393043.

The closest is the device according to U.S. Pat. EN 2393042 designed for plastic hardening springs, sanded extreme turns until the beginning of the working coils, for which the main criterion is the combination of the spring force with its axis. It is the spring of engines operating with unstressed power contact of the coils of the spring hydraulic systems, springs weapons.

The disadvantage of this device is the necessity of manual labor when installed on the spring and removing her top liner of the device when installing the springs in the glass and remove it from the glass device. It is unproductive and prevents the implementation of the mechanization process samevolume.

The technical purpose of the image is the shadow is the improvement of devices and shortcomings.

The technical result is achieved due to the new elements and new communications device to contact samevolume springs, namely, the device comprises upper and lower liners, glass installation in him liners and between the tested spring and plug with a spherical surface in contact with the spherical surface of the upper liner, the bottom liner is mounted for rotation about the axis of the glass and the top - with the possibility of rotation and movement along the axis of the Cup and of the deviation of the axis from the axis of the punch, and the liners are made with annular grooves at the ends of a diameter corresponding to the inner diameter of the spring, and a depth of not less than the height of a coil spring, a nozzle with an inner diameter in the range from the diameter of the compressed spring to the diameter of the coiled spring, wherein the upper shell is connected with the plug by means of the stepped screw with clearance between the outer diameter of the cylindrical part of the screw and the inner diameter of the hole in the liner and the gap between the screw head and the mating surface of the liner to ensure a uniform application of force of the contact samevolume the diameter of the spring and mechanization of installation for the spring and removing a top of the liner, including to allow mechanization of the spring in a glass and UDA who placed her glass of known devices and the bottom liner is connected by a rod with the lower cylinder press for the displacement of the spring from the depth of the device and providing the ability to remove it from the liner known devices.

In the proposed device is a stepped screw performs the function not only of the element for connecting the top of the liner with the punch, giving you the opportunity to remove the top liner from the end of the spring with rising punch from the movement of the upper plate of the press up. Step step screw provides clearance between the spherical surfaces of the upper liner and punch by the difference in height of the liner in contact with the head of the stepped screw and correspondingly greater length of the cylindrical stepped portion of the stepped screw that, together with the available clearance between the outer diameter of the cylindrical part of the screw and the inner diameter of the return holes in the liner allows the liner to deviate from the axis of the punch to ensure uniform force press on the diameter of the coil spring, and for removing and installing the top liner on the spring in contact samevolume.

Figure 1 shows the improved device; figure 2 presents the scheme of installation of the device on press.

The device consists of a set on a plate of glass, which placed the test prog is on, the upper shell is associated with the punch speed screw clearances, allowing the liner to deviate from the axis of the punch to ensure uniform distribution of the efforts of the press to the diameter of a coil spring, and the lower shell is connected rigidly with the shaft with the lower cylinder of the press. The ends of the compressed spring in contact with the annular grooves at the ends of the liners against the ends of the coils, and the coils are in contact with the inner surface of the glass. And the gap between the spherical surfaces of the upper liner and the plug form the difference of the height of the liner in contact with the head of the stepped screw and correspondingly greater length of the cylindrical stepped portion of the stepped screw, the clearance between the outer diameter of the cylindrical part of the screw and the inner diameter of the return holes in the liner to create a difference in their diameters, respectively.

The device is applied with the pressure of having placed on the bottom crossbar of the frame table to install the device, placed in the upper crossbar of the frame main cylinder with slide and attached to the top plate, the bottom cylinder, and a built-in electronic (or mechanical) system that allows you to independently control the start and the speed of movement of the press slide from the main cylinder and the beginning and the speed is inego cylinder. Such pressure is hydraulic Press for plastics" gamma presses "DE" production Orenburg production Association "Gidropress" or similar.

The device operates as follows. The device installed on a fixed table press and the punch 5 with attached stepped screw 6 liner 4 is fixed to the upper movable plate of the press. In the Cup 2 insert samevolume spring 3 so that the ends of the spring in contact with the annular grooves the ends of the liners 4 and 7. Then plug 5 with the insert 4 by movement of the press is lowered, causing the spring 3, pajamas liner 4, increasing its outer diameter up until all the coils will not come in continuous contact with the inner surface of the Cup 2, the diameter of which is made within the diameter of the compressed spring to the diameter of the coiled spring. Thanks to the contact ends of the spring ring grooves the ends of the liners and the contact of the coils of the spring with the inner surface of the glass is compressed spring will take the correct geometrical form. Thanks to the possibility of displacement of the spherical surface of the upper liner 4 relative to the spherical surface of the punch 5 press power to be distributed evenly along the diameter of the compressed spring. After the desired shutter speed under load to a value of 10...300 F3the punch 5 with CIDP who plennum stepped screw 6 liner 4 raise the movement of the press, freeing benevolence spring 3 to perform operations remove it from the beaker and the subsequent installation of the spring in a glass of well-known devices, such as an industrial robot.

But it is possible to remove benevolence spring without the use of an industrial robot: first squeezed from the nozzle upward movement of the lower liner 7 by a rod 8 connected to the lower cylinder press, and then removed from the liner used for stamping devices or compressed air from an air gun. Install the spring in the Cup is installed on the press device of the industrial robot or the gate separating the device from the gravity slid or feed conveyor, remove the spring on the next conveyor or storage, thus forming a automated line for production of high-strength springs.

The advantage of an improved device relative to the prototype is the implementation of mechanization of operations installation for the spring and removing a top liner, to provide opportunities for mechanization of operations, the spring in the Cup and remove it from the glass known for stamping device that eliminates the manual labor and increases productivity process samevolume spring.

Sources of information

1. Pat. EN 2393042 C1 IPC 21F 35/00, F16F 1/02, a Device for contact Tanev is the Lebanon springs / Tabanco, Y.M., Zemljanushnov POSTGRADUATE, Zemlyanov N.A. No. 2009119496/02; claimed 22.05.2009; publ. 27.06.2010, bull. No. 18. - 4 S.

1. Device for contact samevolume springs comprising upper and lower liners, glass installation in him liners and between the tested spring and plug with a spherical surface in contact with the spherical surface of the upper liner, the bottom liner is mounted for rotation about the axis of the glass and the top - with the possibility of rotation and movement along the axis of the Cup and of the deviation of the axis from the axis of the punch, and the liners are made with annular grooves at the ends of a diameter corresponding to the inner diameter of the spring, and a depth of not less than the height of a coil spring, and the glass is made with an internal diameter ranging from diameter the compressed spring to the diameter of the coiled spring, wherein the upper shell is connected with the plug by means of the stepped screw to provide clearance between the outer surface of the cylindrical part of the screw and the surface of the holes in the liner and between the screw head and the mating surface of the liner and uniform distribution of force of the contact samevolume diameter springs for mechanization device installation on the spring, removing a top liner, install the spring in the Cup and remove it from the glass.

2. The device according to claim 1, Otley is aldeasa fact, the bottom liner is connected with the lower cylinder of a press by means of the rod for displacement of the spring from the glass and remove it from the bottom of the liner.



 

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