Wuxi JACK Head and Tail Welding Positioner, the Reliable and Wide Variety of Double Column Rotating Welding Table for Fabricating on Long Structure Workpieces!

Different Structures and Models of Wuxi JACK Double Column Welding Positioner

1. Structure and Function: Head and Tail Welding Positioner, the other name is Double Column Welding Positioner, because majority structure is with 2 pieces of upright columns for connecting both ends of horizontal workpieces, is necessary welding equipment to fabricate on long steel structure workpieces, especially large and heavy ones. There is a set of Rotating Welding Table in between the head and tail upright columns, with different loading capacity to fit on varied sizes (Length/ width/ depth) and weight of working parts;
2. Technical Characteristics: Head and Tail Welding Positioner comes in rich assortment of designs, differed on structure/ overall dimension/ degree of freedom and loading capacity of Rotating Welding Table, as well as work motion. In a word, it is special designed multi-functional welding equipment;
3. Wuxi JACK Products: As profession company in Welding and Cutting Machinery industry, Wuxi JACK engineering team has rich experience and accumulation to develop various standard and tailor made Double Column Welding Positioner for customers:

Fixed height and stationary column, 3 Ton loading capacity

Fixed height and one side moving column, 3 Ton loading capacity

30 Ton loading capacity heavy duty 3 axis Head and Tail Welding Positioner

Welding Fixture type single axis 0° ~ 360° revolve

2 Individual Vertical Orientated Rotating Welding Table

4 Axis Lifting, revolve, rotate, movable along rail 10 ton loading capacity Head and Tail Welding Positioner

One column stationary one column moving fixed height Double Column Welding Positioner

2,500mm lifting stroke stationary with 10 Ton loading capacity Rotating Welding Table

1,200mm lifting stroke stationary Double Column Welding Positioner

Fixed height and stationary double column for 20+ meter length workpieces

1,000mm moving stroke One column moving fixed height Double Column Welding Positioner

Both columns fixed with 2,000mm lifting stroke 5 ton loading capacity Rotating Welding Table

Working Videos of Wuxi JACK Head and Tail Welding Positioner and Other Rotating Welding Table

Related Pages on introduction and videos of different main types of Rotating Welding Table:
1) Welding Positioner;
2) Two Axis Welding Positioner;
3) Three Axis Welding Positioner;
4) Single Axis Rotating Welding Table;
5) Special Made Welding Positioner;
6) Servo Drive Welding Positioner

General Technical Parameters of Wuxi JACK Double Column Welding Positioner

As a kind of complicated and flexible welding equipment, Head and Tail Welding Positioner varies on the aspects of:
1) Control Axis: Single/ double/ three/ Four degree of freedom: Revolve (Must), Rotate or tilting (Optional), elevation (Optional), movement (Optional);
2) Stationary 2 columns for fixed or confined length workpiece, or moving column (1 or both) for varied length structure parts;
3) Specific design on appearance and loading capacity of Rotating Welding Table (Round/ square/ rectangular/ special shape), and dimension...
Below is technical proposal for a Serbia customer, on a set of 3 Axis 10 ton loading capacity Double Column Welding Positioner, with 0°~ 360° revolve, 0°~ 360° rotate, and 2000mm lifting function:

Technical Brief: Structure/ Work Mode/ Application of Head and Tail Welding Positioner

A. Differed Structures of Double Column Welding Positioner:

1. Double Columns: As a branch of important and widely applied welding equipment, Head and Tail Welding Positioner has 2 sets of upright columns in one set of equipment;
2. Columns Interval: The 2 sets of upright columns have certain distance apart, depending on length of workpieces for welding. The distance can be either fixed (Stationary type columns), or adjustable (Moving type columns);
3. Workpiece Type and Secure: Head and Tail Welding Positioner is very suitable for welding on long length welds, especially various structural parts. This is its featured application, distinguished from other types of welding positioner. There is a Rotating Welding Table connected between the 2 sets of upright columns, and workpiece is clamped and secured onto it;
Operation of Wuxi JACK Double Column Welding Positioner at customer facility: (Fig.1)

4. Mechanical Frame of Head and Tail Welding Positioner:

Integral or Splitting Frame: The two pieces of upright columns can be either assembled together into an integral body, by means of a piece of horizontal beam assembled in between, or individually separated from each other:
1) Integral frame, with Rotating Welding Table assembled on top of the connecting horizontal beam, suitable for short to medium length structure parts: (Fig.2)

Fig2 Head and Tail Welding Positioner 13

2) Splitting mechanical frame Head and Tail Welding Positioner, the position of the 2 pieces of upright columns can be changed or moved along rail, according to the Max. length of structure workpieces: (Fig.3)

Fig3 Head and Tail Welding Positioner 8- 100_5433

3) Moving Rail: Under the condition of separately arranged upright columns, one of the columns can move along the rail, to cater for changed length of workpiece: (Fig.4)

B. Category and Working Mode of Head and Tail Welding Positioner:

4 Necessary and Optional Control Axis in Double Column Welding Positioner:

With reference to the two sets of lateral supporting brackets (Upright columns), this welding equipment has flexible way of operation. There are four available degrees of freedom for acquiring optimum welding performance on workpieces:
1) Basic and necessary: 0° ~ 360° revolve along horizontal way;
2) Optional: The 2^nd 0° ~ 360° rotation of Rotating Welding Table at any revolved angle position;
3) Optional: Adjust distance between the 2 pieces of upright columns (Supporting brackets) based on workpieces lengths;
4) Optional: Elevation of Rotating Welding Table along the upright columns, based on cross section size of workpieces.

1. Single Axis Double Column Welding Positioner Revolving around Horizontal Way:

1) These are basic models and starting products of the head and tail welding equipment. It is applicable for constant size (Length and width) of workpieces, or sizes confined to certain range;
2) Single degree of freedom: Workpiece can be revolved 0° ~ 360° along horizontal axis connecting the 2 upright columns: (Fig.5)

Fig5 Head and Tail Welding Positioner 4- IMG_6878

2. Varied Combinations Work Motions in Two Axis Head and Tail Welding Positioner:

Two axis management greatly widens applicating scopes of workpieces sizes and structures. The two degrees of freedom can be combined freely from the above listed 4 axis. The only must one is 0° ~ 360° horizontal revolve of workpiece:
1) Example 1 on Two Axis: Horizontal axis 0° ~ 360° revolve plus 0° ~ 360° rotating at any angular position: (Fig.6)

Fig6 Double Column Welding Positioner 12

2) Example 2 on Two Axis: Horizontal axis 0° ~ 360° revolve plus changing distance between the 2 lateral supporting brackets along floor rails: (Fig.7)

3) Example 3 on Two Axis: Horizontal axis 0° ~ 360° revolve plus certain vertical stroke elevation along the 2 lateral supporting brackets (Here 800mm ~ 1000mm): (Fig.8)

Fig8 Double Column Welding Positioner 7- 100_5432

3. Three Axis: Complicated Structure of Head and Tail Welding Positioner:

1) Suitable For: This additional degree of freedom helps the welding equipment applicable for fabricating on irregular shape and distributed welding seams of structure working parts;
2) Control Axis: In three axis Double Column Welding Positioner, the 0° ~ 360° revolve (Axis 1) and 0° ~ 360° rotating of Rotating Welding Table (Axis 2) are necessary working axis. On that basis, the 3^rd degree of freedom: Either movable upright columns, or elevation of workpiece along upright columns, can be selected according to requirement:
3) 3 Axis Head and Tail Welding Positioner: Workpiece 0° ~ 360° revolve, rotating, and elevation: (Fig.9)

Fig9 Head and Tail Welding Positioner 12

4. Four Axis: Full Degree of Freedom for Large Parts onto Rotating Welding Table:

1) Control Axis: On the basis of 0° ~ 360° revolve/ rotation/ certain up and down stroke, the 2 pieces of upright columns can also be moved either one set or both;
2) Characteristic and Suitable for: Four axis models usually are used on large size and complicated structure workpieces. Its loading capacity is also heavy:
3) 10 Ton loading capacity Double Column Welding Positioner: Workpiece 0° ~ 360° revolve/ rotation/ Elevation, and columns movable along rails: (Fig.10)

Fig10 Double Column Welding Positioner 4- 100_1105

C. Application of Double Column Welding Positioner:

1) This branch of welding equipment is developed specifically for fabricating on structural working parts with long length (Longer than 2,000mm) and bigger cross section dimensions;
2) Comparatively, the vertical revolving Rotating Welding Table is used for welding short length parts, which forms complementary function;
3) Applied Industry: Head and Tail Welding Positioner is necessary welding equipment in Vehicle and Construction Machinery industry: In these facilities, long length complicated structure parts are basic components for final products of various vehicles, trucks, and graders;
4) For illustration on general picture and strong points of our Rotating Welding Table equipment, it is introduced in thematic page of “Superiority of Wuxi JACK Welding Positioner”.

Technical Good Points of Wuxi JACK Rotating Welding Table

Safe and Multiple Flexible Way of Elevation on Rotating Welding Table:

1. Importance of Rotating Welding Table Lifting in Welding Positioner:

1) Elevation of workpiece is important degree of freedom in operation of Rotary Welding Positioner. It is very useful for fabricating on large height and big size working parts;
2) Precondition: For Wuxi JACK designed and produced welding positioner, proper/ surefire/ flexibility is the guideline on how to realize elevation of Rotating Welding Table in these welding equipment:

2. Way of Workpiece Elevation in Wuxi JACK Head and Tail Welding Positioner:

1) Hydraulic Drive for Rotating Welding Table Elevation:

a) Wuxi JACK welding positioner adopts the safest and the most reliable way of hydraulic oil cylinder drive elevation, for Rotating Welding Table in all our lifting type Welding Positioners;
b) Merit: Hydraulic cylinders promise the 100% guarantee on reliable elevation motion, which will not cause sudden drop of Rotating Welding Table and workpieces. This guarantees on complete safe operation of the welding equipment;
c) Comparatively, other companies in the market adopt A.C. motor as drive source of workpiece elevation. Suppose there exist problem with A.C. motors, in turn there exists great potential risk on sudden falling down of workpieces. It is really dangerous for operators on site;

2) Elevation Transmission on Rotating Welding Table:

a) Besides, as you can find from the above photos, in Wuxi JACK large size Head and Tail Welding Positioner, especially lifting stroke above 2,000mm, chain and sprocket is proper way of drive and transmission, to guarantee on both sufficient holding force and elevating stroke, making sure reliable elevation of the Rotating Welding Table;
b) Chain and sprocket as reliable transmission on workpiece elevation: (Fig.11)

Fig11 Head and Tail Welding Positioner 1

3) Fitting into Different Grades for Elevation of Workpiece in Double Column Welding Positioner:

a) Meanwhile, under the precondition of safe operation, eligible welding and convenient job, we always explore on the most applicable way of motion control in our products;
b) Taking the workpiece lifting type Welding Positioner as example, you can find its up and down of Rotating Welding Table is implemented by means of fitting into different grades of mounting bolts;
c) Safety Pins on Slew Support: Same as LHZ series Welding Manipulator column and boom, there is array of safety holes on the 2 pieces of upright columns of Head and Tail Welding Positioner, and eject pins on slew support. In this way, suppose there is defect happens during workpiece elevation, the safety pins will be clapped into safety holes, preventing the workpiece from dropping down. This further fully guarantees on 100% safe operation of Head and Tail Welding Positioner at customer workshop:
d) Later view on slow ring in Wuxi JACK lifting type Rotating Welding Table: (Fig.12)

Fig12 Head and Tail Welding Positioner 1

Category of Double Column Welding Positioner

Here we divide the Head and Tail Welding Positioner based on working motions degree of freedom, into three branches of:
1. Single Axis: Horizontal long length 0° ~ 360° revolve;
2. Double Axis: 0° ~ 360° horizontal revolve, together with: 0° ~ 360° rotate in the air, or elevation along support brackets, or lateral support brackets moving ability;
3. Three to four Axis: 0° ~ 360° revolve and 0° ~ 360° rotate, together with: elevation, or lateral brackets movement

1. Single Axis Head and Tail Welding Positioner:

1. Applicable Workpieces and Structure of Fixed Height and Length Rotating Welding Table:

1) Usage: Single axis head and tail welding equipment is applicable for fabricating on small to medium size cross section and length workpiece, with relative light weight. So, it is no need to raise workpiece, and no need to move lateral double columns during work;
2) Working Parts Secure: Both ends of working parts are joint with lateral sides of the Rotating Welding Table;
3) Single Degree of Freedom: During welding operation, the working parts and Rotating Welding Table revolve around the horizontal shaft in 0° ~ 360° scope, which is connected between both sides of the double columns.

2. Several Structures of Single Axis Rotating Welding Table:

1) As you can check from the right hand photos, the fixed height head and tail welding equipment can be either in the structure of splitting frame, or integral frame; The 0° ~ 360° revolve of Rotating Welding Table and workpiece can be either in motor drive, or manual turn;
2) Example 1: The white color integral structure head and tail Welding Positioner in the right upper photo is the overlapping equipment with Welding Fixture. The rotation of its Rotating Welding Table is pushed by hand, and locked in angular position by means of brakes. The workpiece is secured with groups of pliers;
3) Example 2: The light green color head and tail Welding Positioner in the right middle photo has splitting mechanical body. The revolve of working parts is driven with motor;
4) Example 3: As shown in the below photo, there is also a kind of non-mainstream single axis Double Column Welding Positioner, which has 2 sets of individually arranged conventional Rotating Welding Table. The 2 sets of welding positioners face to face with each other, with workpiece is jointed in horizontal position in between. The distance between the 2 sets of welding positioners can be moved at will, according to length of workpiece.

3 Head and Tail Welding Positioner 2 IMG_1345

1 Head and Tail Welding Positioner 2 IMG_6859

2. Double Axis Double Column Welding Positioner:

1. Flexible Arranged Work Motion of Rotating Welding Table:

On the basis of 0° ~ 360° horizontal revolve, the 2nd degree of freedom can be:
1) Type 1: With Lifting Function: When cross section size of structural working parts grows larger, the Rotating Welding Table and working parts should have elevating function along support brackets;
2) Type 2: With Additional 0° ~ 360° Rotating: When welding points are distributed at different position of working parts, the additional 0° ~ 360° rotate can get ideal welding position for operator and welding effect;
3) Type 3: With Column Moving: Or, when length of working parts has relative wide range of variation, one of the upright columns or both columns should have ability of moving along rails, either with hand push, or in majority, under motor drive;

4) Varied Structures of Double Axis Head and Tail Welding Positioner:

The left 3 photos show the above listed 3 types of double control axis in welding equipment:
a) For smaller size workpieces with lifting function, it is usually has splitting structure, as shown in the left top hand photo;
b) For larger and more complicated workpieces, usually there is a solid horizontal beam connected between both ends of the upright columns. The Rotating Welding Table is assembled onto top of this horizontal beam, and can be rotated 0° ~ 360°, as you can check from the middle one of left hand photos;
c) When the working parts grow higher and heavier, the Double Column Welding Positioner usually has moving side brackets, as shown in the left bottom photos. It is for working parts with wide range of length.

2. Some Technical Parameters of Double Column Welding Positioner:

1) The elevating stroke of workpiece in the lefthand 3 photos are: 800mm, 3000mm, and 2500mm respectively;
2) The corresponding transmission are leadscrew, chains and sprocket;
3) The loading capacity of Rotating Welding Table are 1 ton, 8 ton, 10 ton respectively;
4) The workpieces applicable for the left hand 3 photos are: Big arm, hopper, chassis respectively.

3. Three to Four Axis Head and Tail Welding Positioner:

1. Work Motions of Rotating Welding Table and Workpieces:

1) 0° ~ 360° horizontal revolve --- Must;
2) 0° ~ 360° rotate at by turning angle --- Must;
3) Up and down movement --- Optional, for larger cross section size;
4) Leftward and rightward movement --- Optional, for longer length;

2. Applicating Characteristic of Double Column Welding Positioner in Practical Application:

1) Usually these welding equipment are in large size with complicated structure, as heavy duty welding machinery. These are shown in the lefthand photos;
2) Applicable for large size, heavy weight, and complicated structure of working parts;
3) On the horizontal beam, there is piece of Rotating Welding Table, which can be turned 0°~360°;
4) Double adjustable welding speed: The 0°~360° revolving around horizontal axis, and 0°~360° rotation of Rotating Welding Table are all welding speed on working parts, which is controlled with A.C. inverter. Sometimes, in the strictest precision managing condition, revolve and rotate are driven with servo motors and controlled with servo drivers.

Application and Related Equipment of Head and Tail Welding Positioner

1. Where Used: This branch of welding equipment is majorly used in Construction Machinery, Vehicle, Civil Engineering, Municipal Engineering, and Engineering Machinery, for fabricating on various small to medium to large WIP (Work in process), and structural working members;
2. The related welding equipment: Welding fixture (Prerequisite equipment), Welding Manipulator (Column and Boom welding equipment), Welding Rotator (Welding Roller Bed), and Special Welding Machine, various welding modes power supply, etc..

Wuxi JACK Double Column Welding Positioner and Other Types of Rotating Welding Table

There is always one fitting for you:

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3 Axis 30 Ton Loading Capacity Revolve Rotate Elevation

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Single Axis 10 Ton Loading Capacity Head and Tail Welding Positioner

Two Axis Rotate and Tilt Welding Positioner with 1.2 Ton Loading Capacity Rotating Welding Table

Two Axis Servo Drive Welding Positioner with 2 Ton Loading Capacity

Three Axis 3 Ton Loading Capacity Rotating Welding Table L type Elevating Welding Positioner

3 Ton Loading Capacity Single Axis horizontal revolve Servo Drive Rotating Welding Table

1 Ton Loading Capacity Two Axis Rotate and Tilt Welding Positioner

5 Ton Loading Capacity Vertical Revolve Single Axis Welding Positioner

PR24 Pipe Welding Rotator 0°~ 360° revolve and 0°~ 120° tilt

3 Ton Loading Capacity Three Axis Rotate, Tilt, Lifting Welding Positioner

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