HIGH VOLUME SCREW MACHINED PRODUCTS
Davenport screw machines manage stock size from 3/32 round to 7/8 round. Davenports can also turn hex stock and square stock to almost any geometry. Typical products turned off a Davenport are fittings, pins, spacers, ball studs, nuts, sleeves, bushings, retainers, dowels, rivets, tube nuts, inserts, compression fittings, sleeves, plugs, screws, knurled pins and lock screws to name just a few.
Manufacturing small parts is what our screw machines do best! We have the capacity to run three shifts managing small 20,000pc orders into millions and millions of parts for a single release or multiple releases. Through our machine upgrade and rebuild program JCGibbons can continue to manage a tolerance of +/- .0007″ on diameters. This preventative maintenance program is one key component as to why JCGibbons is superior to other screw machine companies. Currently we are operating 28 Davenports with real estate to add additional capacity.
Typical screw machine grades of material
- 12L14 Steel
- 1215 Steel
- 2011 Aluminum
- 6061 Aluminum
- 6062 Aluminum
- 360 Brass
- 303 Stainless Steel
- 416 Stainless Steel
Depending on the geometry of the part we can also machine 1018 and 4140 steel.
Screw machines, being the class of automatic lathes for small and medium sized parts, are used in the high volume manufacture of a vast variety of turned components.
Speaking with reference to the normal definition of the term screw machine, all screw machines are fully automated, whether mechanically (via cams) or by CNC (computerized control), which means that once they are set up and started running, they continue running and producing parts with very little human intervention. This has been true since the 1870s. Mechanical automation came first, beginning in the 1870s; computerized control (via first NC and then CNC) came later, beginning in the 1950s.
The name screw machine is somewhat of a misnomer, because screw machines spend much of their time making things that are not screws and that in many cases are not even threaded. However, the archetypal use for which screw machines were named was screw-making.
From the beginning, Davenport revolutionized screw machine technology. The remarkable 5-spindle Model B became a legend. The respected Davenport name embraces an ever-growing spectrum of finely engineered products and Brinkman International is committed to the industry. Davenport innovation will continue to make history for another 100 years.
Since 1900 the Model B has been the most profitable multi spindle automatic screw machine available. You’ve heard it a thousand times – time is money. This is especially true in the screw machine parts business. That’s why so many successful managers turn to Davenport Machine to increase their company’s profit. With a Davenport:
- It takes less time to make a part
- Set-up is simplified and operating time is minimal
- Stock feed length is changed with a crank
- Non-cutting time of tools is as little as two-fifths second
- Adjustments for cross slides and tool arms are at the front of the machine
- When changing from one feed to another only one gear requires changing
- Extra sleeves can be provided to carry all cross slide and “turret” cams for the next job
- A simple, high speed loading attachment is operated from the regular working position
- Part chute delivers finished work
- Compensating stop screw is rigidly mounted on the cross slides and rear tool arm
- All levers for feeding and operating are at the front of the machine and an extra starting lever is located at the rear
The Davenport lets you do more. A vast array of precision attachments gives the Davenport the flexibility you want. Plus, an overall know-how built on experience unmatched in the industry means proven design, precision parts and rugged construction. This is why the Davenport is on the job, running year after year.
Attachments are what give screw machines an advantage over any other machine tool in the world. The use of attachments for procedures such as cross drilling, slotting, thread rolling, and flat generation, allow screw machines to perform a wide variety of machine operations while maintaining the fastest cycle times in the industry.
- Burring Attachments
- Countersink Attachments
- Spindle Stopping
- Revolving Spindles
- Idler Gear Arrangements
- Revinloc For Broaching
- Rotary Slotters
- Revinloc and Offside Milling
- Keyway Milling
- Straddle Milling
- Cross Drillers
- Cross Tapping
- Spindle Locating
- Threading
- Thread Rolling
- Transfer Attachments
- Ejector Attachments
- Bent Shank Tapping
- Cross Slide Attachments
- Aligning Gears
A fastener is a hardware device that mechanically joins or affixes two or more objects together.
Fasteners can also be used to close a container such as a bag, a box, or an envelope; or they may involve keeping together the sides of an opening of flexible material, attaching a lid to a container, etc. Fasteners used in these manners are often temporary, in that they may be fastened and unfastened repeatedly. There are three major steel fasteners used in industries: stainless steel, carbon steel, and alloy steel.
In 2005, it is estimated that the United States fastener industry runs 350 manufacturing plants and employs 40,000 workers. The industry is strongly tied to the production of automobiles, aircraft, appliances, agricultural machinery, commercial construction, and infrastructure. More than 200 billion fasteners are used per year in the U.S., 26 billion of these by the automotive industry.
