Testing fixture for HBM-250 Bandsaw Rod Cutting Machine Part (Swing Frame).

1. Design and Development:
Swing frame testing fixture for Bandsaw Machine.
Created By: Mr. KOLI VAIBHAV S. Mr. ZADE VIKAS R.
Mr. DATAR SHREEKAR R. Mr. BHOSALE DHANANJAY B.
Guided By: Prof. Mr. P. S. BADAKAR
Abstract:
The aim of project is to reduce the inspection timing with proper alignment & drilling holes . Also
with increase in accuracy, precision & reliability on fixture of swing arm of band saw type machine.
This proposed method has to design & fabricate the fixture to reduce the manufacturing cycle time.
Testing Fixtures for Swing Frame

2. Company Profile
 Name : SPM tools Pvt. Ltd.
 Address : Plot No. 2 to 8, Sector ‘A’, Parvati Co-op. Ind. Estate,
 YADRAV-416145. Dist.- Kolhapur, Maharashtra (India).
 Type of Firm : CNC, Band Saw & Special Purpose Machines.
 Website – www.spmtools.co.in
 Year of Establishment – 1984
 Total Shifts – General

3. Horizontal Band Saw Machine (HBM250)
 Band saw machine is
power tool, uses
blade to cut the metal
rods (250 mm).
 The cutting blade
rotating on 2 wheels
in the same plane.

4. Swing Arm
 Two wheels are
mounted on swing arm.
 Overall weigh approx
35-40 Kg.

5. Introduction
 Fixture is work holding device that holds,
supports & locates the work piece for a
specific operation but does not guide the
cutting tool.
 . The main purpose of a fixture is to locate
& in some cases hold a work piece during
either a machining operation or some
other industrial process

6. Need of Fixture
 Easy, quick and consistently accurate
locating, supporting and clamping.
 Guidance to the cutting tool like drill,
reamer etc.
 To reduce operator’s labor and skill –
requirement
 To reduce measurement and its cost.
 Increase in productivity and maintain
product quality consistently.

7. Material Selection
 Fixture
 Resting Pad
 Clamping
 Locating Pin
 Mild Steel
 EN24
 EN8
 EN353

8. Purpose of Selection
 MS for Fixture:
High strength & malleability, quite soft.
Desirable weldability & machinability.
 EN24 for Resting Pad:
Excellent machinability & wear resistance.
Good hardness & tensile strength.
 EN8 for Clamping:
Good tensile strength, machinable in any
condition, enhanced wear resistance.

9. Design Principles
 Total machining time for workpiece is
minimize.
 Easy & quick loading & unloading of
workpiece.
 The fixture should be open as possible to
minimize cheap or burr accumulation.
 Sufficiently stiff to secure the preset
accuracy of machining.

10. Experimental Drafting
Jigs & Fixtures in Aircraft Industries

11. Experimental Design

12. Final Drafting

13. Final Design

14. Fixture Fabrication

15. Working Procedure
 First of all two pieces of 5 m long "C"
channels along with 1 m extra channel is
taken for cutting process.
 These pieces are fabricated (welded) with
number of joints to form a bed.
 Plates are welded above base at
respective positions.
 Cylindrical components attached to the
plates by screws & welding joints.

16. Assembly Drafting

17. Assembly Design

18. Testing Procedure
SWING
FRAME
LEFT
WING
RIGHT
WING
DECISION
A +1 +0 -2 +0 +2 +3 +4 +0 -1 Accepted
B -2 +3 +5 -3 +2 +1 +0 -6 +4 Rejected
C -1 +4 +0 -1 -2 +0 +1 +3 -2 Accepted
 Swing frame mounted on fixture with
horizontal zero level stoppers attached.
 Drilling tool of machine is placed over
points where drilling should be done and
values of bend tested as below.

19. Allocation Plates Designs
‘E’ Plate ‘C’ Plate ‘O’ Plate

20. Plate Allocation
‘E’ Plate ‘C’ Plate ‘O’ Plate

21. Cost Estimation
Sr.
No.
Name of component Price in Rupees
1 Welding cost 19000
2 Machining cost 5000
3 Clamping 400
4 Resting 10000
5 Locating 700

22. Advantages
 Minimize the possibility of human error.
 Permit the use of medium-skilled labour.
 Reduce the manufacturing time.
 Allow the production of repeat orders
without retooling.
 The directions of motion for make drill is organised
& deterministic.
 The total time for make fix work piece & release in
short.

23. Conclusion
 The fixtures are very important part of
manufacturing systems. The fixtures of appropriate
design may be used to restrict certain of the
unbalanced forces, and thus reduce the
requirements of control by the operator.
 Understanding how to design and development of
inspection fixture will help to get more accuracy,
alignment & testing measurements along with
production of swing frame.

24. References
 www.spmtools.ac.in
 User manual of respective machine.
 Reference book of Production Engineering by P.
C. Sharma.
 Reference book of Manufacturing Engineering by
P. G. Deshpande.
 Brochure and Catalogues

25. Thank
You