SPRING  MAKING  MACHINES
(Automatic  Spring  Making  Plant)

(a) Automatic Spring Coiling Machine
(b) Automatic Wire Decoiler

(c) Automatic Spring End Grinding Machine

AUTOMATIC  SPRING  COILING  MACHINE

FEATURES

• Coiling Machine has a segment drive in place of the Clutch.

• Variable Speed Drive for different geometry of Springs.

• Minimum Spring Index Dm / d (Mean diameter / Wire Diameter) for Wire Drawing upto to 2 mm - 5 mm, above 2.5 mm - 7 mm.

• Horizontal and Vertical Straightening Device. Clamping Device for Adjusting pressure of feeding rollers, clamping device for Coiling Mandrel, retractable mandrel, Brake arrangement for feeding Rollers, Piece Counter, Electric Control Panel and electricals, complete set of tools to cover entire wire diameter range of the machine.

AUTOMATIC  WIRE  DECOILER

FEATURES

• The decoiler starts and when the Coiling Machine require Wire. As soon as sufficient wire in the form of Loop is available, the decoiler stops, only to start again as required. This intermittent operation is performed automatically with use of proximity switches and solid state control panel.

• Incase the wire gets entangles or cannot be fed for any reason, the decoiler and coiling machine motors cutoff automatically, preventing the wire from breaking.

AUTOMATIC  SPRING  END  GRINDING  MACHINE

FEATURES

• Available in two different versions with different Grinding Cycles - Crush Grinding and Down Feed Grinding.

• Model with Crush Grinding Cycle as the springs in these wire ranges can be easily ground with this process.

• Model with an option of Crush Grinding or Down Feed Grinding as with bigger wire size springs can be ground better with Down Feed cycle and it gives high production rate with minimum handling of springs.

PROCEDURE

• CRUSH GRINDING
  In this process, distance between the two grinding wheels is set to the required spring length. Springs are fed through the loading plate between the grinding wheels. As the desired length is attained, springs fall through a chute to the bottom from where they may be collected. The removal of extra material is possible by single pass as well as by multiple pass.

• DOWN FEED GRINDING
  In this process, the top wheel has a down feed arrangement. After the springs are loaded and fed between the grinding wheels, the Down Feed cycle starts. As the cycle proceeds, grinding pressure on the wheel rises, which increases the current of the spindle motor till it reaches the preset upper limit. At this point, Down Feed Stops and grinding continues in Spark Out. During Spark Out, current begins to drop gradually, down to the preset lower limit. Then Down Feed starts again. This cycle continues till the desired spring length is reached. The setting of cycle is done with the help of scale, dogs and electrical limit switches. The down Feed and the loading plate drive are both infinitely variable to suit individual springs.