We claim:
1. A work holding fixture, comprising:
a support frame having first and second side members connected by a connecting member;
a fixture brake having a shaft rotatably mounted relative to said first side member;
a brake barrel assembly mounted to one of said first and second side members and having a barrel portion fixed to the one of the first and second side members, a backing plate rotatably mounted to the one of the first and second side members and in axial alignment with the fixture brake shaft, and the backing plate having a feature which slidably receives a first bracket and the first bracket configured for attachment to a work piece received by the backing plate;
a tail stock assembly having a drum portion and a bracket guide, said tail stock assembly rigidly mounted to the other of the first and second members which slidably receives a second bracket; and
the second bracket configured for attachment to a work piece and being received by the tailstock assembly.
2. The fixture of claim 1 wherein said brake barrel assembly has a spring loaded detent device mounted to one side for locking engagement with said backing plate.
3. The fixture of claim 1 wherein said drum portion further includes a roller pocket guide positioned in said drum portion for receipt and rotation of said second bracket.
4. The fixture of claim 3 wherein said second bracket has rollers mounted thereto for receipt and rotation in said roller pocket guide.
5. A work holding fixture, comprising:
a support frame having first and second side members connected by a connecting member;
a fixture brake having a shaft rotatably mounted relative to said first side member;
a brake barrel assembly mounted to said first side member and having a barrel portion fixed to the first side member, a backing plate rotatably mounted to the first side member and in axial alignment with the fixture brake shaft, the brake barrel assembly having a spring loaded detent device mounted to one side for locking engagement with said backing plate, and the backing plate having a slot feature which slidably receives a first bracket and the first bracket configured for attachment to a work piece received by the backing plate;
a tail stock assembly rigidly mounted to the second member which slidably receives a second bracket, said tail stock assembly having a drum portion with an opening at one end, a bracket guide extending from the opening, said bracket guide used as a funnel for receipt and rotation of said second bracket, and a roller pocket guide positioned in the drum portion with a radial gap of a predetermined size existing between the outer diameter of the roller pocket guide and inner diameter of the drum portion; and, the second bracket configured for attachment to a work piece and being received by the tail stock assembly.
6. The fixture of claim 5 wherein said second bracket has rollers mounted thereto for receipt and rotation in said roller pocket guide.
7. The fixture of claim 5 wherein said slot feature is defined by two slot brackets configured for attachment to the backing plate.
8. The fixture of claim 7 wherein said slot brackets have chamfered surfaces extending outwardly from the slot feature into approximate alignment with the receiving slot feature facilitating receipt of said first bracket.
9. The fixture of claim 7 wherein a sliding bracket is disposed in the slot feature and is sized for a slidable fit between the slot brackets, having a first end in approximate alignment with the inner diameter of the barrel portion to maintain the relative position of the sliding bracket and the slot brackets with rotation of the backing plate.
10. A brake barrel assembly, comprising:
a barrel portion having an axially extending arcuate wall and having a receiving slot through the wall;
a backing plate rotatably connected to the barrel portion and having a slot feature which slidably receives a bracket and the bracket configured for attachment to a work piece received by the backing plate, the slot feature being aligned with the receiving slot in the first position; and
a spring loaded detent device mounted on one side of the barrel portion lockingly engaging said backing plate in a first position.
11. The assembly of claim 10 wherein said spring loaded detent device has a plunger assembly, the plunger assembly having a plunger housing mounted to the brake barrel assembly having a plunger roller tip received by a notch in said backing plate in the first position, and, a plunger spring which biases said plunger roller tip into engagement with said notch.
12. The assembly of claim 10 wherein said slot feature is defined by two slot brackets configured for attachment to the backing plate.
13. The assembly of claim 12 wherein said slot brackets have chamfered surfaces extending outwardly from the slot feature into approximate alignment with the receiving slot feature facilitating receipt of said bracket.
14. The assembly of claim 12 wherein a sliding bracket is disposed in the slot feature and is sized for a slidable fit between the slot brackets, having a first end in approximate alignment with the inner diameter of the barrel portion to maintain the relative position of the sliding bracket and the slot brackets with rotation of the backing plate.
15. A work holding fixture for use with motor vehicle instrument panels comprising:
a support frame having first and second side members connected by a connecting member;
an rotary motion actuating mechanism fixed to the first side member and having an axis of rotation;
a first receiving feature rotatably fixed to the rotary motion actuating mechanism and aligned with the axis of rotation and having a first receiving opening;
a second receiving feature fixed to the second side member and aligned with the axis of rotation and having a second receiving opening in alignment with the first receiving opening;
a sub-frame assembly having a first engagement end having a portion sized to pass through the first receiving opening;
the sub-frame assembly having a second engagement end fixed relative to the first engagement end and the second engagement end having a portion sized to pass through the second receiving opening wherein the sub-frame assembly is received by the receiving features of the support from a single direction of relative sub-frame to support frame orientation and with the sub-frame disposed withing the support frame the first engagement end is rotatively connected to the first receiving feature for unitary rotation therewith.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Poly (pentabromobenzyl acrylate) having a weight average molecular weight (Mw) in the range from 200,000 to 600,000 and a polydispersity index less than 15 based on high temperature gel permeation chromatography.
2. Poly (pentabromobenzyl acrylate) according to claim 1,
wherein the polydispersity index is less than 10.
3. Poly (pentabromobenzyl acrylate) according to claim 1,
wherein the polydispersity index is from 5 to 10.