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This section provides an overview for drill-reamers as well as their applications and principles. Also, please take a look at the list of 9 drill-reamer manufacturers and their company rankings. Here are the top-ranked drill-reamer companies as of December, 2024: 1.DRILLING TOOLS INTERNATIONAL, 2.Tri Star Engineering, Inc, 3.Regis Manufacturing Co.
Table of Contents
A drill-reamer is a tool that can perform drilling and ream at the same time.
Typically, reaming is after drilling the pre-drilled hole. (Reaming: Finishing process to adjust the diameter accuracy and surface roughness of the hole.) Therefore, the same hole must be reamed twice.
However, with a drill-reamer, reaming can be performed simultaneously in a single operation, thus drastically reducing machining time.
Generally, the tip of the drill-reamer is in the shape of a drill. The center of the cutting edge to the base of the reamer is in the shape of a reamer rather than a drill.
Drill-reamers are for machining that require hole diameter accuracy and surface roughness.
Using a drill-reamer for drilling holes that do not require bolt threading or positioning is unnecessary. Standard drilling is sufficient.
Then, in what case is a drill-reamer used? Let's take a die as an example.
The lifeline of a die is the die and punch. The clearance between the die and punch must be adjusted in hundredths of a percent so that they are installed in the same position no matter how many times they are reassembled. This is where the positioning pin comes in. A drill-reamer is used for the hole to fit this locating pin. If the hole is inaccurate, the positioning pin will be misaligned, and the punch and die will be out of alignment. In the worst case, this can lead to breakage.
Thus, drill-reamers are for drilling holes that require precise positioning and when machining to fit tolerances of precision parts.
Drill-reamers were developed to improve work efficiency by simultaneously drilling the pre-drilled hole and reaming the hole diameter by shaving the sides of the pre-drilled hole.
The drill-reamer has cutting edges for both drilling and reaming. Therefore, drilling and finishing can be performed in a single machining operation.
The cutting-edge shape of a drill-reamer is shown below.
The reamer is behind the corner of the cutting edge for drilling. The reamer allowance is set at 0.1 to 0.5 mm.
For example, in the case of a drill-reamer with a finishing dimension of 8 mm, nominal dimensions are 8 mm: drill diameter 7.7 mm, reamer diameter 8 mm, drill blade length 22 mm, and overall blade length 80 mm.
The bite angle that switches to the cutting edge for reaming is often set in the range of 15° to 45°. In addition, chips are cut by the nick or breaker, allowing for smooth chip evacuation and improving the accuracy of reaming.
High-speed steel is mainly used for drill-reamers. Some have a TiCN coating on the cutting edge for superior durability.
*Including some distributors, etc.
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Regis Manufacturing Co. is an engine products and equipment manufacturer established in 1959 and headquartered in Dallas, Texas. The company produces a number of components including flywheel grinding stones and camshaft work tools, as well as solid, hollow, and knot wire end brushes used in the industrial, automotive, mining, and OEM device sectors. The company also produces assembly supplies, such as engine paints, coolants, and lubricants. For clients in the Dallas area, Regis Manufacturing Co. offers a number of onsite services including inspection, testing, and repair of camshafts, brakes, cylinder heads, rods, and pistons.
Tri Star Engineering, Inc., based in Chicago, Illinois, was established in 1976 as a manufacturer of cutting tools. Its products range from drills, reamers, counterbores, trepan tools, and hollow mills. In addition, it also specializes in manufacturing radial and axial cam relief grinding as well as SAE J512 inverted flare-type fitting cutting tools. Its products are made from solid carbide, carbide tipped, or high-speed steel. The products manufactured are catered to various industries such as automotive, plumbing supply, and aircraft. With around 16,000 square foot manufacturing plant, the company obtained ISO 9001:2008 and SAE certification.
Alvord-Polk, Inc. is an american-made cutting tool manufacturer founded in 1881 in Millersburg, Pennsylvania. The company is specialized in the aerospacial industry, offering multiple custom services. It counts with a diverse product catalog, including numerous types of reamers, core drills, counterbores, power brushes, and other items. It operates many brands like Morton, BrushOne and AMPM. The venture's network reaches a worldwide status, being present in South America, Europe and the Far East, besides The United States of America. In addition, it complies with homologated quality standards, holidng an ISO 9001:2015 certificate.
Drilling Tools International, a company founded in 1984 and based in Houston, Texas, is a manufacturer of drilling equipment. It manufactures blade steel stabilizers, drill collars, and pressed steel thread protectors. It patented a wellbore conditioning system that helps oil and gas operators overcome drilling technical limitations. Its manufacturing plants, in 22 locations across North America, Europe, and the Middle East, offer multiple hollow spindle lathes and drill collar spiral machines. In 2014, the company obtained ISO 90001:2015 for manufacturing, servicing, and rental of rotary drill stem elements for the petroleum, petrochemical, and natural gas industries.
Star Cutter Company was founded in 1927 and is headquartered in Farmington Hills, Michigan. The company is an ISO 9001:2015 certified manufacturer of tool grinders, and precision cutting tools, and a provider of tool services. The company’s tool grinding machines include the small-footprint NXT Tool Grinder and the scalable UTG Series Broach Grinder. The company’s precision cutting tools include bits, blanks, and preforms. The company also offers tool services including round tool reconditioning, gear tool resharpening, and tool engineering services. Tool engineering includes the design and manufacture of all aspects of tools from materials to size to coating.
Pan American Tool Corporation, established in 1986, is based in Fort Lauderdale, Florida, as a supplier of aircraft cutting tools. It offers various products such as metal cutting tools, nova pneumatic tools, cobalt jobber drills, threaded shank adapter drills, and carbide drills. The majority of its products are utilized in the aviation and aerospace industries. In addition, its products are supplied to 600 airlines, 1,500 aviation MRO facilities as well as fixed-wing and rotary-wing aircraft manufacturers, which cover over 70 countries. Moreover, the company obtained ISO 9001 certification for its quality management system.
Rock River Tool, Inc., established in 1986, is an American manufacturer and distributor based in Bradenton, Florida, specializing in carbide tipped and solid carbide cutting tools. The company’s product offerings include a range of tools, including various drills such as aircraft extension and stub length drills. It also provides a selection of reamers, catering to general purposes and steel cutting needs, as well as various types of centers. Additionally, the company offers an array of counterbores and countersinks, along with single point tools for steel and non-ferrous metals. Notably, for milling operations, the company offers arbor and shank style milling cutters.
Michigan Drill Company was founded in 1969 in Miami Florida and it is a manufacturer of cutting tools. The company offers cutting tools including hard-to-find items and hard-to-find sizes. The products include drills, reamers, taps, dies, counterskins and counterbores. It also provides full line of indescable solid carbide and carbide tipped cutting tools. The company provides wholesale products to industrial distributors. It's online services are custom pricing, inventory, ordering and tracking. It is an ISO certified company.
Li Hsing Precision Tool Co., Ltd. is an award-winning solid carbide end mills manufactruer based in Taichung, Taiwan since 1996. The company's diverse product catalogue includes square ends, ball nose, corner radius end mills, and more. In fact, it also makes reamers, high speed drills and microscope carbide micro boring items. Additionally, the venture counts with multiple standard quotas, including the ISO 9001, TÜV Rheinland, and D-U-N-S certificates. Regarding other accomplishments, the firm was awarded the Taiwan Gold Medal Quality Product Award in 2011 and the 2019 Golden Hand Award for Outstanding SMEs in 2019,
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | DRILLING TOOLS INTERNATIONAL |
25.0%
|
| 2 | Tri Star Engineering, Inc |
14.7%
|
| 3 | Regis Manufacturing Co |
10.3%
|
| 4 | Star Cutter Company |
10.3%
|
| 5 | Michigan Drill Corporation |
8.8%
|
| 6 | Alvord-Polk, Inc. |
8.8%
|
| 7 | Pan American Tool Corporation |
7.4%
|
| 8 | Li Hsing Precision Tool Co., Ltd. |
7.4%
|
| 9 | Rock River Tool, Inc. |
7.4%
|
Derivation Method
The ranking is calculated based on the click share within the drill-reamer page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
7 | 87.5% |
|
Taiwan
|
1 | 12.5% |
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