Keyway Broaching - HMSC Home Page
Transcript of Keyway Broaching - HMSC Home Page
![Page 1: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/1.jpg)
Keyway Broaching
By Dick Kostelnicek
for
The Home Metal Shop Club
Presented March 13, 2010
![Page 2: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/2.jpg)
BroachedProducts
By Dick Kostelnicek 03-05-2010Source: Hassay- Savage Corp.
![Page 3: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/3.jpg)
By Dick Kostelnicek 03-05-2010 Source: Center Broach and Machine Company, Inc
![Page 4: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/4.jpg)
Broaching
Internal
Rotary Linear
Pull Push
Contoured Keyway
Broaching
Hierarchy
By Dick Kostelnicek 03-05-2010
Surface
![Page 5: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/5.jpg)
Broach Parts and Process
• The Broach is a Metal Cutting Form Tool
• Has Progressive Teeth (rough, fine, and burnish)
• Feed (tooth rise) is built into the tool
• Work is Usually Stationary
• Chips are Carried Away in Tool Gullets
By Dick Kostelnicek 03-05-2010
![Page 6: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/6.jpg)
Standard Square Keys
S E
Over Including5/16 7/16 3/327/16 9/16 1/89/16 7/8 3/167/8 1-1/4 1/41-1/4 1-3/8 5/161/3/8 1-3/4 3/81-3/4 2-1/4 1/2
dimensions in inches
![Page 7: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/7.jpg)
Square Keyway Broaching
By Dick Kostelnicek 03-05-2010
Note: Tables for distanceM are available inMachinery’s Handbook
![Page 8: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/8.jpg)
Tools for Keyway Broaching
Arbor Press
Push Keyway Broach
By Dick Kostelnicek 03-05-2010
![Page 9: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/9.jpg)
Keyway Push Broach Assembly
By Dick Kostelnicek 03-05-2010
First PassWithout Shim
Second PassWith Shim
![Page 10: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/10.jpg)
Materials Cut byKeyway Broaching
• Hardness less than Rockwell 35
• Brass & copper may exhibit depth drift
• Soft materials (aluminum) yield poor finish
By Dick Kostelnicek 03-05-2010
![Page 11: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/11.jpg)
• Two or more teeth contact the work
• Bushing extends through the work
• Align broach with ram travel
• Catch broach as it passes through the work
• Remove cuttings before second pass
• Lube shim face before second pass
Broaching Hints
By Dick Kostelnicek 03-05-2010
![Page 12: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/12.jpg)
Broach Lubrication
• Reduces Friction that Causes Chatter
• Aids in Chip Transport and Removal
Steel: Cutting oil or water soluble coolantBrass: Dry or waterCast Iron: DryAluminum: Tap cutting fluid for aluminum
Note: Always lube the back and sides of a Keyway broach
By Dick Kostelnicek 03-05-2010
![Page 13: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/13.jpg)
Keyway Broaching Video
Part 1 Part 2 Part 3
Part 4 Part 5
![Page 14: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/14.jpg)
Square Hole Broaching Video
Part 2
Part 3
Pat 1
By Dick Kostelnicek 03-05-2010
![Page 15: Keyway Broaching - HMSC Home Page](https://reader031.fdocuments.net/reader031/viewer/2022020702/61fb17982e268c58cd5a0ed5/html5/thumbnails/15.jpg)
el fin
By Dick Kostelnicek 03-05-2010