Chuck Fixing Lifting Type Welding Positioner with Double Table Top

1. The Formation of Double Table Top Head and Tail Lifting type Welding Positioner:

1)  The double table top Elevating type model is come into being on the basis of Head and Tail Welding Positioner, which is added with the second degree of freedom: Elevation of Weld turntable, or workpiece;

2) 2 degrees of freedom in lifting type Head and Tail Weld Positioner :

a) Weld turntable and workpiece revolve around the central horizontal axis, which is the main degree of freedom. Please check below picture in yellow color square frame;

Horizontal revolve connection of workpiece: (Fig.1) 

b) Weld turntable and workpiece moves up and down in vertical direction, along the upright columns (Headstock and tailstock). It is the auxiliary degree of freedom. Please check above picture in orange color square frame;

3) Securing Workpiece in Head and Tail Welding Positioner:

a) Both ends of workpiece is fit on the Weld turntable by means of the chucks at both ends, headstock and tailstock. The chucks, or connecting round plate have holes for securing bolting;

Headstock and tailstock connection with workpiece: (Fig.2)

b) So, the chucks play the similar role as Welding Fixture in the welding positioning equipment.

2. Usage of Elevation function to Head and Tail Lifting type Welding Positioner:

1) Horizontal axis revolve of Weld turntable is the main degree of freedom, through this motion, most majority of manual and automatic welding can be performed;

2) Additional Freedom of Elevation for Large Size Workpiece:

a) After the workpiece is fit onto the Weld turntable, and in the period of workpiece revolve, there exist potential risk of interference with the ground. Or, in other words, no sufficient spatial room for workpiece revolve; 

A large pit for revolve of workpiece at customer workshop, for 30 ton loading capacity large Elevating type Head and Tail Welding Positioner: (Fig.3)

b) Under such occasion, the Weld turntable and workpiece should be raised to certain height for having sufficient aerial space revolving. This entails the development of Head and Tail Elevating type Welding Positioner.

3.  Elevation Drive Way in Lifting type Head and Tail Welding Positioner:

1) Unlike elevation movement in L type Elevating type Welding Positioner, which adopts with hydraulic system as energy source for its L arm elevation, in this Head and Tail Lifting type model equipment, the up and down movement of Weld turntable is driven with motor reducer and transmitted with leadscrew or chain;

2) The reason behind that is, with the double column at both ends of the welding positioning equipment, one is driving type and the other is idle, they (Headstock and tailstock) need to move in phase. The driving and transmission style of motor reducer has reliable performance in terms of synchronization. Comparatively, hydraulic transmission does not have good performance on this aspect. 

Elevation drive and transmission unit: (Fig.4)

4. Technical Features of Elevating type Head and Tail Welding Positioner:

1) Safety Measures of Head and Tail Lifting type Welding Positioner:

To fully guarantee on safety with its mechanical elevation system during operation, a series of measures are taken by Wuxi JACK engineering team:

a) Weld turntable elevation motor is braking type;

b) Chain and or leadscrew adopted for Weld turntable elevation are with higher insurance factor;

c) Equipped with one stage reverse stroke self lock unit;

d) Alarm light for Weld turntable elevation, etc.

Safety and alarm units: (Fig.5)

2) The revolve of Weld turntable is reversible ±0°~ 360° of adjustable revolution pace;

3) Tonnage of Weld Turntable:

a) Loading tonnage capacity of this Head and Tail Weld Positioner is generally within the range of 1 Ton ~ 5 Ton, accounting for over 50% practice. And as high as 10 Ton or even more is also available;

b) All of these welding positioning equipment of headstock and tailstock structure are custom made: Which means technical proposal and specification need to be discussed and confirmed back and forth before final made;

4) Vertical stroke, for 1 Ton loading of Weld turntable, it is around 800mm~ 1000mm; For 5 Ton it is around 2000mm.

5. Technical Parameters of Lifting type Head and Tail Welding Positioner: