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Cambridge Tool & Die offers a variety of mold types to fit your production needs. Please refer to this chart for guidelines in determining the type of plastic injection mold required for your job.

CTD will guarantee plastic molds built to standard SPI classifications for the specified number of cycles designated by the given class. With over 40 employees working three shifts in 100,000 sq. ft of manufacturing space, we can handle any size job. We specialize in large molds over 750 ton press.

   

SPI Mold Classifications

   
Type 101 Mold - This tool is capable of ONE MILLION CYCLES or more. Mold base is minimum 280BHN (Rc30). Molding surfaces (cavities and cores) must be hardened to a minimum of Rc 50 and, where possible, have a hardened wear plating. All other details such as slides, heel block, gibs, wedge blocks, etc., should also be of hardened tool steels with wear plating. Part ejection should be slides used in side coring should have replaceable hardened wear plates. Electroless nickel plating of all water channels is recommended to inhibit rust. Parting line locks are required.

Type 102 Mold - This tool is NOT CAPABLE OF EXCEEDING ONE MILLION CYCLES. This mold is identical to the type 101 with the following items not required: guided ejection, hardened slides wear plates, plated water channels, and wear plated cavities. All other extras are optional. This tool is a MEDIUM TO HIGH PRODUCTION TOOL that is good for abrasive materials and/or close tolerance products.

Type 103 Mold - This tool is capable of UNDER 500,000 CYCLES. Mold base is to be a minimum of 165 BHN (Rc 15-17). Cavities and cores to be a minimum of 280 BHN (Rc 30). All other extras are optional. This is a MEDIUM PRODUCTION TOOL at an economical price range.

Type 104 Mold - This tool is capable of UNDER 100,000 CYCLES. Cavities can be of aluminum or mild steel or any other agreed upon material. All other extras are optional. This mold is a LOW PRODUCTION MOLD and is used as a limited production tool on non-abrasive materials.

Type 105 Mold - This tool is capable of NO MORE THAN 500 CYCLES. The mold base may be constructed from cast metal or epoxy or any other material offering sufficient strength to produce the minimum prototype pieces. This tool is only for prototype purposes only. All other extras are optional.


 

Personnel & Equipment List

Building:  100,000 square feet

Personnel:
(3) Mold Designers
(20) Journeyman Mold Makers
(9) Cnc Programmer/Operators
(3) Mold Polishers
(3) Maintenance Technicians

Manufacturing Software:
Cad:
(8) Cimitron Workstations
(1) Pro E Workstation
(1) Worknc Cad Workstation
(1) Autocad Workstation
Cam:
(3) Worknc Workstations (On floor programming)
(5) Mastercam Workstations (Catia translators)

Machining Centers
(1) CNC Makino GN2012, 80” x 47.24” x 27.56”
(1) CNC Dropp & Rein VMC, 93” x 47” x 47”
(1) CNC Makino S56 (13000 rpm) High Speed, 35.4” x 19.7” x 17.7”
(1) Okuma Howa CNC VMC, 60” x 30” x 27”
(1) Lucas CNC HBM, 84” x 72” x 40”
(1) Tarus CNC Gundrill, 96” x 60” x 30” column travel up to 2”dia. 84” dp.
(2) Tarus CNC Pickers,96” x 60” x 35”

EDM Machines:
(1) CNC Makino EDNC 156W, 98” x 56” tank
(2) Easco Sparcatron #162, 40” x 18” tanks, 60 amp Power Supply
(2) Easco Sparcatron  Model B, 62” x 42” tank, 200 amp Power Supply
(1) Makino SNC64 Carbon Mill 

Grinding Equipment:
(2) Gardner 12” x 15”, Surface grinders
(2) Harig 6” x 12”, Surface Grinders
(4) Deckel cutter grinders

Other Equiptment:
(1) Sumit Radial Drill press
(1) Westoff 0” to 1/8” Carbon drill
(1) Clausing Colchester Gap Lathe, 17/28” x 60”
(1) Whacheon Lathe, 18 3/8” x 60”

And other misc. required equiptment.