Manufacturing Services
rms delivers superior product solutions through our talented employees utilizing the latest in machining and manufacturing technologies.
A Cretex Medical company
By making significant annual investments in the latest machine tool technologies, rms maintains a significant advantage in both capability and capacity. This translates into more than 600 State-of-the-art machine tools in a range of platforms, selected for their ability to provide the best tolerance control, spindle speeds and surface quality in the industry. It also assures that rms is constantly evaluating and updating to the best technologies available so that we remain at the forefront of machining capability. For our customers this means the best quality and lowest delivered cost.
- Milling centers up to 5-axis
- Mill turning centers up to 8-axis
- Swiss turning center up to 13-axis
- Conventional CNC lathes up to 13-axis
- High end wire EDM up to 5-axis
- Sinker EDM
Typical Tolerances and Capabilites
The following represent the typical tolerance guidelines but as we continue to push the boundaries through new technologies these do not necessarily represent the final limits of capability.
| Machine Type | Material Stock |
|---|---|
| High-speed 5-axis mills | 0.010" (0.25 mm) to 18.0" (460 mm), cylinder or square |
| 13-axis Swiss | 0.060” (1.52 mm) to 1.5” (38 mm), cylinder or square |
| Lathe turning | 0.05” (1.27 mm) to 4.0” (100 mm) |
| 5-axis Wire EDM | 0.025" (.635 mm) to 14.0" x 8.0" x 9.0" (355.0 X 203.2 X 228.6 mm) |
| 4-axis RAM EDM | |
| Femto second laser | |
| *Fine cut Nd:YAG Laser | |
| Laser welders | titanium, platinum, stainless steel |
| Machine Type | Material Stock |
|---|---|
| High-speed 5-axis mills | 0.010" (0.25 mm) to 18.0" (460 mm), cylinder or square |
| 13-axis Swiss | 0.060” (1.52 mm) to 1.5” (38 mm), cylinder or square |
| Lathe turning | 0.05” (1.27 mm) to 4.0” (100 mm) |
| 5-axis Wire EDM | 0.025" (.635 mm) to 14.0" x 8.0" x 9.0" (355.0 X 203.2 X 228.6 mm) |
| 4-axis RAM EDM | |
| Femto second laser | |
| *Fine cut Nd:YAG Laser | |
| Laser welders | titanium, platinum, stainless steel |
*0.002" (0.05 mm) Diameter Beam
| Features | Typical Limits | Extreme Limits |
|---|---|---|
| Diameter | +/- 0.0005" | +/- 0.0001" |
| Length | +/- 0.001" | +/- 0.0005" |
| Profile | 0.002" | 0.001" |
| Position | 0.002" | 0.001" |
| Surface finish | 16 Ra | 4 Ra |
| Sharp corners | 0.003" | 0.001" |
| Wall thickness | 0.005" | 0.002" |
| Pocket milling depth | 3x to 6x diameter | 7x to 10x diameter |
| Inside fillets | 0.005" | 0.002" |
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In response to the needs of the medical device industry, rms has invested in a new femtosecond laser machining platform to support its advanced machining operations. This precision laser technology excels at small features and can drill holes as small as one thousandth of an inch in diameter which is well beyond the capability of conventional drilling technology. Further, the holes can be cylindrical, positive or negative taper, or elliptical. In addition, this laser utilizes an ultrafast pulse, essentially creating an athermal process. This in turn eliminates the normal heat affected zone that can degrade the properties of the material and require additional secondary processing.
- Fast and efficient way to produce micro holes and features
- 5 Axis motion control + 5 Axis laser control
- Straight, tapered, and reverse tapered holes down to Ø.001”
- 7:1 Feature aspect ratio
- True athermal ablation leaves no heat affected zone
- Positional accuracy: ±.00004” (1 Micron)
- Typical diameter tolerances: ±.0004” or less
- Surface quality of inner wall: Ra < 0.1 Micron
- Maximum stock size: 8.25”x4.7”x5.9” (3 Axis) or Ø2.9”x5.9” (5 Axis)
Taper Capabilities
Micro gear with 0.2598_diameter
Sample hole
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To support the manufacture of Orthopaedic implants rms has invested in Direct Metal Printing (DMP) as a strategic technology for product development and manufacturing. Also known as Additive Manufacturing, this proven technology is gaining acceptance in the manufacture of implantable medical devices by offering a number of benefits that cannot be replicated through machining alone.
Foremost among its benefits, Additive Manufacturing provides a method to manufacture highly complex parts that simply cannot be produced with conventional machine tools and processes. These designs promote better in-growth of bone using printed trabecular surfaces and internal matrix structures that were not possible until now. In combination with our machining capabilities, we have the ability to add secondary features to the devices created by Direct Metal Printing, delivering a finished product solution from a single source.
- Layer Thickness:
- Range: Adjustable – min 2 µm, no max
- Preset: 30 and 60 µm
- Build Envelope Capacity: 10.82 x 10.82 x 16.53 in (275 x 275 x 420 mm)
- Current qualified material: Titanium Alloy Ti 6Al-4V ELI (Grade 23)
- Repeatability: x=20 µm, y=20 µm, z=20 µm
- Minimum Feature Size: 100 µm
- Typical Accuracy: ± 0.1-0.2% with ± 50 µm minimum
Secondary machining of printed implants
Spinal Implants
Printed porous structure
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rms Company has assembled a complete array of secondary operation capabilities to assure that your finished components meet the most exacting standards.
- Tumbling – vibratory, centrifuge and disc
- Deburring
- Cryogenic
- Chemical
- Mechanical
- Blasting
- CNC blasting
- Micro-blasting
- Bead blasting
- Automated and manual polishing (including cobalt chrome)
- Fully automated passivation system
- Type I and II
- Cleaning
- Vapor and ultrasonic
- Color anodize – Type III
- Bending
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Taking the process a step further, rms has the resources to convert components we machine into sub-assemblies and assemblies to further reduce your inventory requirements and assembly time.
- Laser welding and assembly
- Laser marking
- Mechanical assembly
- Cleanroom assembly
- 5,000 square feet
- Class 100,000 certified (ISO Class 8)
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To provide the widest range of available finishing options, rms has also developed a network of approved and qualified outsource partners.
- Anodize – Type II
- Electro-polishing
- Heat treatment
- Plating
- Castings
- TPS/plasma coating
- Shot peening
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We are a part of the Cretex family of medical companies, a privately owned enterprise with a proud 100-year history. We offer a complete range of medical device manufacturing expertise and bring you the convenience of billing simplicity, no markups and faster decision-making. We also have the financial strength and resources you may need to match your latest manufacturing technology needs.
By bringing the best together through technology and talent, Cretex Medical can offer a broad range of solutions with capabilities that include:
- Custom metal stamping
- Small and miniature metal-formed components and assemblies
- Prototype to production
- Custom instrument manufacturing
- Sterilization cases and trays design and fabrication
- Fast-turnaround prototype and production requirements
- Contract laser micro-machining and assembly
- Implantable devices and component manufacturing
- Medical device design, contract manufacturing and assembly
- Micro-and multi-shot injection molding technology
- Medical device assembly
- Packaging and labeling
- Sterilization management
- Process development and validations
- Sourcing and supply chain management
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