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E&H India "Virtual Factory Tour" is ready.
Now new 5-minutes Virtual factory videos for our INDIAN plant "E&H India" is available. Please click the below to dive into our factory...
Oct 4, 20241 min read


Number of Automatic Lathe Machines Reached 1,000 units
We are pleased to announce that the total number of automatic lathe machine owned by our group companies, the Thai subsidiary E&H...
Jun 29, 20231 min read


Factory 3 Launched in Chonburi, Thailand
We, Hiraoka Sangyo Co., Ltd is delighted to announce that our newest factory was launched in March 2022 in Chonburi, Thailand. This...
Jun 23, 20221 min read


What is "Cutting Coolant Fluid" for?
Cutting fluid is a liquid that is released towards cutting tools when metal materials are being machined during production, such as on a...
Jun 2, 20221 min read


Changing Hole End Angle
The metal lathe parts such as Pistons, Valves or Nozzles where those products have stop boring hole, if the specified angle of stop...
Jun 1, 20221 min read


Changing the Angle Indication of Clearance Groove
When you design clearance groove for the cylindrical lathe parts such as Shafts, Piston, Valves or Nozzles produced from metal rods, If...
Jun 1, 20221 min read


Securing Sufficient Pilot Hole Length for Threading
When there are Lathe parts such as Rollers, Pistons or Valves that require Threading inside Boring hole, Special cutting tools are...
May 31, 20221 min read


Machining on Raw Material Surface
If there is “Machined Surface Required” or “Specific Surface Roughness” mentioned on the drawing for the Turning Shafts, Roller, Pistons...
May 31, 20221 min read


Securing Clearance for Thread
Lathe Parts such as Shafts, Rollers, Pistons or Pins that have thread, “Effective Thread Length” like Y in the upper picture is not...
May 31, 20221 min read


Changing Radius Size on Corners
The Lathe Parts like Pins, Pistons, Valves or Shafts, If the size of radius corners are small like 0.1 or 0.05 as the upper picture, then...
May 31, 20221 min read


What are ”Spindle types” for CNC turning machines?
In turning, cutting is performed by pressing a cutting tool against a material that is rotating with the spindle. Automatic lathes can be...
May 27, 20221 min read


Changing Radius to Chamfer on corners
Lathe Products such as Pistons, Shafts or Pins have some corners which requires “Radius” shape as the upper picture. Producing “Radius”...
May 26, 20221 min read


Allowing the drill tip at counterbore
Some lathing products such as Pistons or Pins have counterbores, and the end surfaces of counterbores are required to be flat as the...
May 26, 20221 min read


Stepped drill surface on through-hole
Some lathing products such as Pistons, Valves or Collars require to have through-hole at the center, and drilling process to produce such...
May 26, 20221 min read


Eliminating stepped surfaces
Machining 90-degrees steps like the upper picture on cylindrical turned parts such as shafts, rollers and pistons need extra cutting tool...
May 24, 20221 min read


Angled shape of bottom of the hole
When boring the hole on cylindrical shape machining products such as bolts, valves or pins, boring the hole as flat end at the bottom...
May 24, 20221 min read


Machining diagonal corners on hexagonal material
Clamping the hexagonal material with diagonal corners would not make positional accuracy of boring inner diameter since material surface...
May 24, 20221 min read


Adding V-shape Groove on Milling End
Having a flat end on milling is likely to produce burrs, and it gives us additional costs such as frequent milling cutter replacement,...
May 20, 20221 min read


Radial milling end shape
Milling process is often done by milling cutter and its shape is radial, however some drawing says milling end shall be “straight” as the...
May 20, 20221 min read


Adding Clearance Groove at the end corners for Grinding
When the machined products such as Shafts, Valves, Pistons or Rollers that require external diameter grinding, the grinding operations...
May 19, 20221 min read
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