Double Lock Vice

What is a Double Lock Vice?

A double lock vice is extremely simple and functional. It is designed to have two object-holding stations (often referred to as the dual-station vice) to hold multiple work pieces at the same time to facilitate productivity. The jaws usually include a sliding mechanic to accommodate the different sizes of objects.

If you are looking for a vice to enhance productivity, look no further than the double lock vice. It not only allows you to optimize the use of table space, but also provide the capability to machine twice as many parts as the single station vices would. 

Application of a Double Lock Vice

In terms of application, the double lock vice is perfect for clamping and machining multiple work pieces with varying sizes simultaneously. Once the jaws are set to proper positions, they will hold the objects to be machined securely and accurately, ensuring not only productivity but also rigidness. A double lock vice is commonly used for high volume CNC production due to its superb machining productivity. 

How to Operate a Double Lock Vice?

Operating a double lock vice or any vices that utilize a double station design is quite easy and safe. A double lock vice is also designed to maintain clamping positions and enable quick repeated loading and unloading actions. Follow the simple steps below to learn how to properly operate anything that is dual-stationed:

1. Disengage the slide brake: Assuming that the double lock vice has already been installed on your work bench, we need to disengage the rear brakes so that sliding jaws can be placed and adjusted to match width of the work piece in the next step. The common way to disengage the rear brake on a double lock vice is to loosen the screws from the brass fittings so that the jaws can slide from side to side.

2. Place the jaws on vice bed: Now that the rear brake has been disengaged, you can place the sliding jaws and the center jaw on the carrier slide. Technically, a vice with dual station design actually consists of three jaw components: one station jaw which will be fastened and secured at the center of the vice, and two sliding jaws to be installed on the rear of the vice. Both rear jaws will clamp the work pieces against the center jaw for machining.

3. Secure the jaws: As briefed in the last step, we are now ready to secure the stationary jaw at the center of the vice bed. Use the screws (usually button head cap screws or socket head cap screws) provided by your manufacturer to firmly fasten the center jaw. Next, fasten the sliding jaws which you already placed using extended length set screws or spring plungers. Afterwards, tighten the screws just enough to make sure that the jaws are installed securely and rigidly. 

4. Engage the rear brake again: After all the jaws have been installed, you can now re-engage the brake which you loosened in the beginning of the operation; fasten the provided screws back onto the brake to re-engage. You may have to adjust the spring-loaded screws to control the length of spring travel. How far the rear jaws will open is attributed to the amount of spring travel. 

5. Hold the work piece: Now that the brake is set, the dual stationed mechanism is fully functional. It is time to clamp your intended work piece in place with the double lock vice that is completely set up. When you have the jaws grip onto the work piece the first time, the brake might drag against the vice itself to set itself to final position which requires more torque to tighten. This will however not happen again for succeeding uses. 

The operation of a double lock vice is no doubt different from that of a standard vice with specific regard to the brake system. It will definitely help greatly in terms of user experience and product usability if you familiarize yourself with the brake system first, then proceed to learning the rest of the process.

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