Erwin Halder KG widens range of XL clamping devices
Machine even large work pieces without vibrations
Positioned securely and with pin-point accuracy – thanks to using the right clamping elements
Machining large components, for instance in heavy machinery construction, often poses a monumental challenge. One of the instrumental keys to success is to clamp the work piece in a secure and reliable manner. In an effort to allow customers to position components securely and without vibrations – even if of considerable size – Erwin Halder KG is expanding their portfolio of XL clamping devices by bedding supports, down-thrust clamps and clamping vices to include sizes that suit M20 and M24.
“The best tools are of no use if you cannot clamp the work piece – be it minuscule or exceptionally large – such that it cannot shift at all”, explains Bernd Janner, Sales Director for Erwin Halder KG. “Machining these work pieces with perfection requires that you use reliable clamping elements from start to finish. Another factor of paramount importance when it comes to attaining more efficient production processes is the ability to reduce set-up times!” Erwin Halder KG manufactures premium-quality standard parts as well as products for use in aviation and soft face mallets. Over the last few decades, Halder has also made a name for themselves as a manufacturer of dependable work piece clamping devices.
Head-quartered in Achstetten-Bronnen, the company has enjoyed particular success with clamping devices used to position large-size work pieces such as clamps up to size M30 / M36, T-groove bolts, nuts for T grooves, and studs as well as nuts and washers with larger dimensions. The company is now expanding their range of clamping devices: “Previously, clamping elements were limited to fastening bolts with a thread size of up to M16. Now, our new products make it possible to clamp work pieces with even larger dimensions, such as blanks for use in machine beds”, notes Bernd Jenner. The benefit: Our easy-to-use clamping devices allow the user to securely position and freely exchange components of various types with just a few steps.
Clamp with pin-point accuracy
The down-thrust clamp is produced from hardened, blackened and ground case-hardened steel. In addition to sizes M12 and M16, it is now also available in size M24. It can be affixed on the base plate with perfect ease using four cap screws. Users can achieve a maximum clamping force of 30 kN with this new down-thrust clamp.
As the clamping head can be effortlessly swivelled by hand through 360° in relation to the guide column, users can exchange their work pieces quickly and with no trouble at all. Repeated pin-point clamping is guaranteed by the optional positioning ring. It is installed by pulling the clamping head off the down-thrust clamp and by sliding the positioning ring onto the clamping column. After aligning the down-thrust clamp on the work piece, the positioning ring is securely clamped on the guide pin of the clamp. When seated in this position, the ring ensures that the components will remain clamped at the same position. The clamping head will then still be able to swivel to the left and the right by 110°.
“As our down-thrust clamps are ultra compact, they require exceptionally little space inside the fixture. They offer outstanding ease of use, cutting down the times required to exchange the work pieces, without compromising on their ability to clamp every part with perfect security and reliability", says Bernd Janner. This allows users, for instance, to mount the clamps both on a machine table and in a variety of fixtures for the purpose of work piece clamping.
Solid clamping element – versatile and highly adjustable
A functional clamping vice is often a useful tool when it comes to machining large work pieces. Boasting a mechanical WS 36 screw drive, the new clamping vice achieves a clamping stroke of up to 25 mm. It is fixed in place by four cap screws with a thread size of M24. Thanks to its horizontally acting clamping force, it will hold even large components safely in place, generating clamping forces of up to 80 kN.
As perfect complements Erwin Halder KG is offering a host of different clamping jaws which can be affixed at the clamping vice. These jaws include smooth and ribbed interchangeable jaws made of tool steel, floating jaws made of hard-treated steel, prismatic jaws made of hardened case-hardened steel and soft jaws made of case-hardened steel.
Users can also opt for interchangeable jaws that create a down-hold effect. This line of products is comprised of a base support, a smooth and ribbed interchangeable jaw - all made of hardened case-hardened steel - and an interchangeable jaw that comes with a roller made of hardened cold work steel. Before it can be used, the clamping vice must be fastened on top of the base support. Held in place by two strong permanent magnets housed in the basic element, the interchangeable jaws can be easily exchanged as needed. Our comprehensive range of clamping jaws offers everyone the jaw that is perfect for them – depending on the geometry and material of the work piece.
Hold even unstable components safely in place without vibrations
Another innovation designed by Halder is the size M20 bedding support. It is used to provide a clamping support underneath specific areas of components. This means: If attaining reliable clamping requires further clamping points in addition to the three conventional ones, the bedding support is used to clamp the component in a secure manner and without vibrations. For this purpose, a built-in support pin abuts on the component, exerting a light spring load, and is interlocked without displacement by tensioning the clamping lever, allowing the bedding support to generate a supporting force of 10 kN. When the work piece has been machined, the clamping lever is released again, returning the support pin to its initial position. The support height must be adjusted to the size of the component. This user can make this adjustment by simply screwing set screws or supports into the female thread of the support pin.
The bedding support is available in different sizes ranging from 8.5 mm x 75 mm to 25 mm x 387 mm. The advantages are perfectly obvious: The bedding support allows you to create additional clamping points. While sporting a low and compact design, the bedding support will support even large and heavy components and blanks without distortion, reliably preventing vibrations on the work piece. Ribs, beads, and shackles are dependably supported as well. This feature guarantees a reliable machining process.
Bernd Janner: “By expanding the clamping element segment of our standard part portfolio with elements supporting hole sizes up to M24, we added additional clamping options for larger components – with the bedding support, as a supplement to classic clamping options, representing a particularly versatile work piece clamping tool. The high clamping forces of the products allow for reliable machining and, thus, superior manufacturing results. What is more, users benefit from shorter work piece exchange times!