1. Workpieces of Small Models Edge Rounding Machine:

1) Function: As its name suggests, this machine is for trimming, blunting, deburring and rounding on edges of:
a) Small width long steel plates: (Fig.1)

b) I H Beam flange: (Fig.2)

2) Workpiece Specifications of I H Beam and Small Plate Edge Rounding Machine:

a) The largest width of steel plates and flange is 1000mm. In practical condition, the common seen width is in the range of 200mm ~ 800mm;
b) The steel plate thickness is in the range of 8mm ~ 40mm;
c) Length is from 1,000mm to 12,000mm, and can be longer if customer need:
Closeup view on operation moment of Wuxi JACK Small Plate Edge Rounding Machine: (Fig.3)

2. Why Workpieces should be Trimmed with Steel Plate and I H Beam Flange Edge Rounding Machine:

1) High Moisture Surroundings for Machinery Operation:
When Machineries, Constructions, or Projects are planned or expected to be applied and constructed in rigorous environment, such as outdoors, seaside, in the sea, river and lake, where erosion of wind and rain, steam and vapor are inevitable and frequent, requirement on coating and painting adhesion capability on these Machineries Constructions, and Projects should be raised accordingly, the painting performance should be sturdy and durable;

2) Effective Measures Taken with Small Plate and I H Beam Flange Edge Rounding Machine:

a) One of the solutions that is must for production and construction on these Machineries and Projects, is to trim on edges of workpieces into round angles of R2.0mm to R3.0mm, typically R2.5mm, thus greatly raising painting and coating adhesion capability of steel plate and I H Beam flange edges;
b) For this purpose, trimming and Edge Rounding Machine is a very important and essential equipment for fulfilling trimming on workpieces;

3. Operation Features and Main Structure of I H Beam Flange and Small Plate Edge Rounding Machine:

1) Wide Use: RH1000 and RH800 models are the largest selling products of RH series Edge Rounding Machine, focusing on subdivision of small width steel plates and H Beam flanges;
2) Structure Difference: Benefitting from narrow width of workpieces, it is not necessary to install the downward pressing rollers in the machine work area on edge rounding. This is the critical difference between small models (RH800, RH1000) and large models (RH1500, RH2000, RH2500, RH3000) Large Steel Plate Edge Rounding Machine: the down pressing rollers are for maintaining flatness on surface of large width steel plates during edge rounding operation, which have width up to 3,000mm:
a) Mechanical frame and central operation zone of Wuxi JACK RH800 and RH1000 models Small Plate Edge Rounding Machine: (Fig.4)

b) Wuxi JACK RH800 model I H Beam Flange Edge Rounding Machine: (Fig.5)

c) Customer had FAT (Factory acceptance test) on Wuxi JACK RH3000 model large steel plate Edge Rounding Machine before delivery: (Fig.6)

4. Structure of Small Plate and I H Beam Flange Edge Rounding Machine:

1) Based on this application difference, the RH800 and RH1000 small models do not need the complicated box frame mechanical structure as in the case of RH1500 to RH3000 large models machines. Just an open structure low height mechanical main frame base bed can fulfil the task of high standard and high speed edge trimming on workpiece;
2) Strong Points: So, RH1000 and RH800 small models steel plates and I H Beam Flange Edge Rounding Machine have the advantages of compact size, easy installation, relocation, and convenient operation.

1. Operation Way in RH Models Steel Plate and H Beam Flange Edge Rounding Machine:

a) Design sketch on general principle of Edge Rounding Machine: (Fig.7)

b) Edge rounding on small plate during machine commissioning: (Fig.8)

c) Design sketch on rollers orientation of I H Beam flange edge rounding: (Fig.9)

1) In a nut shell, this can be described as “4 points being subjected to force”, as shown in the above sketches and photo: In one piece of workpiece (Steel plate and H Beam), there are up and down, left and right, 4 edges in total;
2) Central Zone: Correspondingly, there are 4 pieces of edge rounding rollers, in the operation zone of Edge Rounding Machine. These 4 pieces of edge rounding rollers can have its position adjusted in both horizontal and vertical way, accommodating on different width and thickness of workpiece;

3) Operation Drive Force in Wuxi JACK RH Series Small Plate and H Beam Flange Edge Rounding Machine:

a) Such position modulation on edge rounding rollers is driven with hydraulic oil cylinders, considering the heavy force involved during edge round operation;
b) Deployment: This is the reason that, why we see so many pieces of oil cylinders installed at central work zone of machine, installed in both horizontal and vertical orientation. In general, there are totally 13 pieces of oil cylinders in one set of Wuxi JACK Edge Rounding Machine, serving different functions:
c) Different hydraulic oil cylinders in Wuxi JACK RH models Edge Rounding Machine: (Fig.10, 11)

4) Machine with Similar Principle: This may remind you of motor drive and hydraulic drive H Beam Straightening Machine, which has similar straightening theory as edge rounding, but aims on different aspect of workpiece (Steel plate and H Beam) and process technology (Edge rounding and straightening);

2. Different Orientation of Acting Rollers in I H Beam Flange versus Small Plate Edge Rounding Machine:

1) What is Different: As shown in the above figure 8 and 9, as well as below, orientation of upper pairs of edge rounding rollers is slightly different for H Beam flange, compared with condition of edge rounding on steel plate, which lead to variation of machine mechanical structure accordingly. Shown as below:
a) Slant positioned top paired edge rounding rollers on H Beam flange: (Fig.12)

b) Upright positioner pair of edge rounding rollers on steel plate: (Fig.13)

2) This is because for H Beam flanges, there are 2 flanges in one H Beam. The 2 flanges are horizontal orientated, with width from 200mm up to 800mm. When having edge rounding operation on the bottom piece of flange, there should have sufficient space in the edge rounding cavity, to accommodate on the upper flange;
3) For this purpose, for I H Beam Flange Edge Rounding Machine, the upper pair of edge rounding rollers should have slant angle, in the angular position of 10° to 15°, depending on the minimum size of H Beam;
4) For example, in February year 2026, a Singapore customer negotiated with Wuxi JACK on RH800 model I H Beam Flange Edge Rounding Machine. The customer expected that RH800 model machine is able to fulfil on edge rounding on H Beam flange with the minimum dimension of: Flange width 100mm, and thickness 6mm. Comparatively, in Wuxi JACK conventional design RH800 model machine, the available minimum dimension of H Beam is flange width 100mm and thickness 8mm;
5) To meet customer special requirement on processing such small H Beam, the H Beam Flange Edge Rounding Machine need to be special designed: Slant angle of the top pair of edge rounding rollers should be enlarged from 10° to 15°, and rollers itself should also be slightly smaller:
Rim of edge rounding rollers in Wuxi JACK Edge Rounding Machine: (Fig.14)

6) While in the case of edge rounding on steel plate, its machine structure is simpler than machine on H Beam: There is no need to leave space for upper section of workpiece during work. For this reason, the top pair of edge rounding rollers is completely upright, and structure of edge rounding cavity is simpler also.

1. Workpiece Sending Into and Out of Edge Rounding Machine:

1) Steel plate and H Beam send forward Through Edge Rounding Machine:

Is combined effect of:

a) In phase revolve of the 4 pieces of edge rounding rollers;
b) Revolve of rollers on input and output conveyors roller tables;
For this reason, during design and validation on machine, Wuxi JACK engineers calculated and validated carefully, confirming on process parameters of:
a) Linear velocity of edge rounding rollers revolve;
b) Linear velocity of conveyors tables rollers, and hence workpiece conveying speed;
Making sure these 2 work motions mate with each other perfectly and smoothly;

2) Drive Source on Revolve in Edge Rounding Machine:

a) There are motor reducers installed at both inlet and outlet of mechanical main body, which drive the 2 pieces of bottom positioned edge rounding rollers; In this revolve process, the 2 pieces of top positioned edge rounding rollers are led into rotation also from revolve of workpieces (Steel plate and H Beam):
b) Motor reducers for driving on conveyors roller tables, at both lateral sides of RH1000 model machine main frame: (Fig.15)

3) Infeed and Outfeed Conveyors Length of Edge Rounding Machine:

a) Same as large models RH3000/ RH2000/ RH1500 machines, there are input and output conveyor of 10m each equipped with the RH1000/ RH800 smaller models, corresponding with the max. workpiece length of 12m. If workpiece is longer, the roller tables will be longer also:
b) Conveyor roller table being installed at Chinese customer facility, of Wuxi JACK RH3000 model large steel plate Edge Rounding Machine: (Fig.16)

4) Workpiece (Steel Plate and H Beam) Alignment in Edge Rounding Machine:

a) At the forwarding terminal of input conveyor roller table, (Which means, the terminal of the input conveyor approximating to mechanical machine body), there is alignment unit for keeping correct position of workpiece (Steel plate and H Beam) for edge rounding operation in the machine;
b) With this alignment unit, terminals of workpieces for edge rounding will be leaned against edge rounding rollers, to make sure proper job on operation.
 

2. Edge Rounding Debris Cleaning Unit of Wuxi JACK H Beam Flange and Small Plate Edge Rounding Machine:

1) Necessity: Considering property and task of machine, this equipment should be kept clean as much as possible, especially its edge rounding operating zone: If there is foreign particles and dirt infiltrated in the clearance, the edge rounding operation will be seriously negatively affected, in terms of both quality and efficiency;
2) Execution Unit: Such cleaning task is accomplished by means of compressed air pneumatic system. As shown in below photos, in operating clearance, there is blue color air tube right above workpiece (Steel plate and H Beam), which, under the drive of compressed air cylinder, blows out air onto just finished edge rounded workpiece, thus cleaning trimmed round edges accordingly. This cleaning unit is standard configuration in all the models of Wuxi JACK Edge Rounding Machine, from small models RH800- RH1000, to large models of RH1500 to RH3000:
a) Lateral view on debris cleaning unit, at outlet of Wuxi JACK RH1000 small model Edge Rounding Machine: (Fig.17)

b) Debris cleaning unit, at both sides of Wuxi JACK RH3000 large model machine operating zone: (Fig.18)

4. Installation on Small Steel Plate and H Beam Flange Edge Rounding Machine:

1) Acting Rollers of Edge Rounding Machine:

2) Mounting Bed of Edge Rounding Roller and Oil Cylinder in Edge Rounding Machine:

3) Guiding Rod of Acting Roller in Edge Rounding Machine:

4) Sliding Bearing of Guiding Rod in Edge Rounding Machine: