%PDF-1.6 %���� n�����ZoT�/��lxj%��a4�lb�{! @��% l�th&�� M�6&�l ��� L>aa��ä�I����A2gZ�A�� ޛAt���@�t��K���u����v�I���K�"4��KXI�T���"JP��$A: ꭄij�v�J� ��{�:I�B�m�!6��0ga���k��L�n��gCfζ����)`���NC4ȃQ���6�i1"��JĆ�)NC`��(l.� )�I0i&-@d�~HeA�~@bzj��@� I? endstream endobj 87 0 obj <>stream ���2U�eu�v���@�`��V����&8a:N! h�D�]�0��r�t��lk$Ad�� �݉.4����'t��{��% l6r7qG>.��5�5wIr�\���{�j�i�kvq�֨Pi�ZD���3���l�v��|� �T�ZȒ�?_b�3��1���`$d婝��cu�cG��� �TY!/=..��S�'Ý| ̉�`$vʪ( c��5�{g\����kq��Y�� endstream endobj 3 0 obj <>/Filter/CCITTFaxDecode/Height 526/ImageMask true/Length 5823/Subtype/Image/Width 1040>>stream fk����y��=�7P���A'+���.ܙ����v�tRU�I�7��8���t-�L��-�P���41�P��UQ��х"yQBK��� mK�zC-A9�/����ś�( Deep (or cup) drawing: In this operation, forming of a flat metal sheet into a hollow or concave shape like a cup, is performed by stretching the metal in some regions. h�22P0P02T0R02R07U�����wJ,Nu��+��H�)K-�LN�w�K�O��KW01j��K�MK��&�T�� C0��kg�lPTbA�P{RbI1DoT�Kn� ��1B 16 Kalpakjian !“Design for Sheetmetal Working”, Ch. Rubber pad forming (RPF) is a metalworking process where sheet metal is pressed between a die and a rubber block, made of polyurethane. Academia.edu is a platform for academics to share research papers. A blank-holder is used to clamp the blank on the die, while the punch pushes into the sheet metal. • Cutting and forming thin sheets of metal usually performed as cold working • Sheet metal = 0.4 (1/64) to 6 mm (1/4in) thick • Plate stock > 6 mm thick • Advantage - High strength, good dimensional accuracy, good surface finish, economical mass production (low cost). lT� �l��0D�hf6(LA�v`S�A��"�>�Lv'i&������D�z彩F��D���Z�U]S_ endstream endobj 88 0 obj <>stream ]3�O��3Q���L��!2FF⟱�ޙ9� G4�pA�!#��L3C8`�U���'���>!��zv����w/Dv�KrQD���ވ��H�!�C�;���� �N�N��H'��i���A=>����O���v��������$�z������Џ��h �����B�o��T/������DA����������%� �����s��WO�K��K�������������Z�����k�����"��0��k����v����o� P+��~ Y?a )�g������gt��L/�ɏ�ܱ�#"2s5���"g������3H i� �X��Qd�_< }�P�C0��*a��a3 l�U��m��Z���ֿM�DQ�ݡa8��gD��홿y,�'?PA��k���K��'߯K����/����nؽoO�}�����"���:_Ǻ�^�������k�0����$E:�&��$y٪�^�������P `��ͣ�C��:EAV^L��h�G��o���9� �a�N,&�OB�a0��6_m/�w�um4�4�t�iz\Z��4~�kک;�� ʺ%�:�]�ry�D���\�m����?������~����T\'D��u�[�o��ޫu�ۧ���tX�����?k�v҆�}�l%��«־��{wޓ�]Z��=�c��c�>+t�/�_������>�'�����������}5�,0�}�vB�ڮ��v��}�� �4���2��: 3�\ �: MP�/����_�~��������������b_��z����~��>����&���~N��F�}�t����umU��wJ8���o�����kN���k���Km'V��M�K�����!8TT|~ȣ����Nӵ��^��dX�a�,2 �h5���`�ȯ `�@�P`�|2û{��""""""""""zZ]�c�aCPeld� �u2&S;Q �)�[���;�.?' The sheet is drawn into the die hole taking the shape of the cavity. D.�A}��� ���|R�#��.�!7Q�N�}H� &�A�z[Z4�� PoV�HPgs���"��������a ��7j���lIu2Ĥ4�Hi�R��t���$Q�&@Ő.�.��>����'V�A�bBS��aNP�$8�pA�h��BbBTi0i��x7D"����̖����<2���:s%@<2� �� xhA�,r�UN�0�d �A���xf{V�:��e�NS�rܱ��Hr���ɎC@���!�89�å 0�aؔ�!��Y(q ܐ��u@}��7d,0���8���P�2��A��q�(���D8��ӆq8��fL�����Eقd�M� �&��[h70�@���h6�A0�o�W�7A�L ֶ���}�!�i��4l���n�C@0EAF��P�a���6��8�h3(r� F�/��Ld2�e��A ��)�.�S��@v �tP�Y�dtP�|���9��o���2� �VA��� m�7��IA�80�A��m�% ���G��@>���<1�'ն�9rlL���`D�T�d����$��� �&�H6��C0r�!�r X@��q�9�����a��D4)�$4�o����kM� _�CbÄf�� �۷I;�D.���̃��>��]�&苽HQ��0Bw�-���`�b �ap�Z�o�j������9�5�w Ի���wA`q[x�8�d���LZ�t(�.�5A��՟t��=;�����Q=l/�����X��}����;�O u�#� p߷�h�Bu٪�ű��s�Zs$��\U��a��K8��c���68�Ⱥ��KY��h3��)���x�'s2�9�ʌ�9���.�����_��Z�U��.���8��z3P�����:��M����ܪ�;PNW�n5�UnZ�BY��픵S�e��*�L�dʁL���C��k�x�ě�x��j����0+��r����j�q�:{�����I���K�4�'�4¥0_�$f�Ϳ���, g'��W�+���b��O� ��L��G�'Cy�T��T��H�f×�yy�0�%�W�|�#0 ~�iW(#C���c ��x�������"���l/y��"Ĝ*(�Q��(K)UO� ��Iǃ��Qh�~?0t�5�ex�K��;�7xo*�T����\jOf2�Le�3�E�"S%[�^L��5�W�^>�W� /�ѷ��`�=�R7u�+<4f!K��R�ȋēJ"�YxE*��3�%I�� �y,M��Ԕ�� '�~M��E\�"��w0�C�E��2M4�*�Ɨ#��"�$+D��� x�rdDh]��s��--��_`9 8| �o/r�� 'C�3�t&c�)����S!��*MyQ!UP8��$�#!��`u$|fhN �� ��� �� ��!�f.��PzpN������N�A� �`F�/0z#�m������0�k �_X| �G/9�yP�=����P9\�Ι�,�f��"f����S��^ h��Xms�6��0���C.���:�(��z�og�ɴ�| IPbC�*I�v~�- I��^���fbYw�,삻��P"a< R'D�ѐƄ 2"\ИȘ�0����( ("d$`DDL� Uh� U$�~��� A�"�3PDF(��� 9�!%���!�(Ɩc�`��1�����[��ci��'?8���.���ϸ��fd���c\gM^�3|�7نaVK���!L����f�(����>���S¹6⥮��z-���4�ĮIlP�0�p��X��8���I,���h��Gh���n�lt~3]�\���BF���l|=:%�/��e8�WG�����ӓ�������|�Z�����U�w��9e�"��r��i���?��xD�O���"r��οO�L�.�����V��|��i�������TU���J�O$k����'ſ��bB$�\ä��e����-{��كU�q>m�:?��Y��0���i�I�Oi� ayJ�\n����݃�����W�f��t��Ã��� v�ݛ�y�/�noo�[�7�X�$p7�Վڿ+�#A��d���B�^�z8���J��q`�_��ݧ@>��a��ټ߯������?�X� h�22V0P���w�/�+Q0���L)�62 r • Cutting, bending, drawing ε H��WKo�6��W�(�"Jv"�R��`�lQ=E��q��8I�Ƕ����pfHJ�7-z�k�$�=�7�w}V��]eG����cv���*ck�o����� k������J�u'��f��/ŬΗ���bv�oks�����䟋�"�T̚���`����M�k�#ڳޞ3�8{�ک>+l�?��A�G�j� ~ �6N���&�=�,�, endstream endobj 85 0 obj <>stream It is defined as the mechanical working of metal at a temperature between that of Hot working and Cold Working. 84 0 obj <>stream (SDjED���i��La0���T�0T� endstream endobj 89 0 obj <>stream Wk��� _��A��k� �j�bvO;Gn�`�JA0�P�XlOk��A6�8o��A�� ?g�8���N)�PD?͆Ag"̂aA�g��q�--$pb�Lv�u�`�MMPj��,��Ҧ�wj�����־�t�=4�կ��I7U��]�,�����(`�}"W�ַ��hN�|�O_ ���h�e�m}zI��տ�n�T�!��~�j��k�{ endstream endobj 2 0 obj <>stream �2&���E�t]���E�#�|���>v@9!ށ��mp����������[��r3� �z�aRv�AEu��bq���۶�z�=+��i=&�D�i7��I��;�o���?�{i7\0`��z��6��;i?��~"���� h�2�T0P���wJ,Nu��+��sqt���H�)K-�LN�w�K�O��K���s�+΄��2��K�3����Az]R���2J�-����$"T�&�T�� C0 �46�$�8���"�� � Xk/� �.��V$��&�5��@T3R� �0�_%��p�"v�B�R��Vt��4��� ���iEt9�������Prs�'�(o��[�=Đq[���\d-�+p�\C�ߗBs�����4��; ̈��x,y�4����ԼChꜥ��D=�W���s�3Rc W|��T�9e����5\]^�l4(��!I� �DS �$���\�Cs^q�߹lO���$�؎�a�]r��GI����5i����y��hn��>����J�'�ŧ;�A���ak�I`�E߹���k��߿���S�Y��L�����b�� ���s4t/�*N�1��Ե��y��YXh��Z�d:m�1�s��[��]3�� �\�`]��RB�(��[憐5I=\��Io��);�ϣ5T�w�&��RJ9p����У[�U �m��)��K �a�������VBc`������Ӹal�� �ɿ�aK@"1�"84!�A��,��28M4�j"$V�A��"��3���D��#�mlT0KLU���(�u�d. Under pressure, the rubber and sheet metal are driven into the die and conform to its shape, forming the part. endstream endobj 91 0 obj <>stream �(��}�u���)�,I^�ov��E�[�zcUU�ڛ�ix���!K�J�'��ux K��}9܃+�����P�(�)�Q�$~s��gR~��*�cw�:ĸҞa���:\�^*����Q]7��!��[�i��^<9�\-��jF`n�i�9.�B���t��KH[�YC�ڦ��l�բ���M����z��բR��YS�O��ЗU��H��U��Y�&I�V}�xBǐ��J�����uM�V���\vez��n��M��R�P�*3Q�UY�a�7=P��[X�����n�y��T�;3p�q�VuC8MK=�L;�U�[�c����(�.8�*c�����r�m��c `��*'�h�7���6��ƫ�� ٪5[p�D�[�|�u�� �P�Hh�!�B�X�Q�91Ɏq�0��&ۣ ���@�"""C_jl4�/S"�"���(��il:m�@�n9Z2:�ᜂ� xe조�����5�Ls�,���<2��!������5��T" NR endstream endobj 92 0 obj <>stream " c�r(� �!�2�c]&�p�S)�D6rP� `r��9�C0�&���>�H8�o���� A�vmv�M�Cf�!�u1�>�6���+j�&ɐ�VA����{z`�@�����&� ���7qV�JC�A6\��>��80Z=4�j�ch!���H9[�R �6�L��)(�a� sA"��&��i$e���!�XP� �8)� ��$]�� A��&!A�r���$!��!�A�V�6�H�D1LAa;���#% �* �r��z[� a## 7#� h(M�����Կ��a��M���Nף�����|��!GIt�u������ؤ�&�u�o�n��NҺZ_���V�kkm��]�kֱ�L�v66D��T4�iA�o�������*m[��� �A��dGA��Bp�w�Q%>��S� �`�C.Z�����DDDG��C��NJ�l8_�_�����[��_�ݤ�$� ��x2�m&�F���[ ^�L[Vm&ҷM����3 ����Pa��N��a$��A�GA'�P�T�s�q�vR�4 This solid =�a~�xk��a��HL �GA��&a4i��":ݧ�"-�!�a0B��0��0�b""""#�;[KL�"�vKQ�������������6���5��=I.D��漃�yB����A(DA�����"L��2�&c#�A��30�� RFl �40�CM4D4 4�$��T�a0���OZDQ܌z�G|Zu�u��0R~��@�3�A�_#�.d�|��̏�m�������*i��A�=��'�I������u�������*8������������������W������߯����D ����Z\��5�^S���_]���u������f�u�C�������]k��]>�����V���_k�_��ߍ�Ն� �~_�U1�ll{�"��4�t�o��}}�J����d 酰�k�?�UQ`�4!�B!&�hL`�8�DDDDDDG���-���e���a$d&��h7!�����03��uf@��L&P���DDž\}4쏩rc�!�EE�ᤴ���?��mUեa�_J�&w��!I!]i��{_�>"���UHh*YGZ�IB���\dA&D�j΄9����)�3f�@��ȃ!���>�#�. Rubber pads can have a general purpose shape, like a … �I%A�U�A��U���$�B�=WI�Z����%��7�V��u�'��M�|_L$���F������CpM+-��w�#�|�#��� �e��.��GE�>JQtq����V�� rC�-��h��vbB�iSe���;xA�F�I �� �4��Ip�j��a�e�,� �a1�!�P ..�6�pAp�gXa!d=�a({a+���� �n����:m����;�h,o@��;-�I��K: C���gd]����_�=���L5��W Gj����p�\�S����xWv���LI�;[J�4C���:,�k�`W��P¯�p ��>�-T�`)����b�V�����Rez]-���R;C=NC�Tj���{��o����I�މ����҂�F�a�0N�ޝM'?^��yo�*��� � �����p��Qᄞ�������ׯ��a&�u��������ZWk������6����n��� ���g h�]o�0�����.J4���*k��ZEM���&ȸM�_?S�5���i�>�9'`�� D�GGb�G;2�Љvx��df�(�B��~�� ���e���V���c\���y��!�ŀ^O\��gD��g����U�n^W&F7P��)ReWk�Gd`g�*�U��[!��Z��S4�S$��N5���.� lua@ӻ�2|בֿ�;WD�e�Ex��%�>˰R��\B�T�A��~:}��ȋa�yD�� �k/!�����x-c �GܴMܾ@�����x˓t@M�L����㼬�ď8��a�/)��C�~^X��L�6>�8sk~����ͿE��/6�)�������L�{-���g䅔���a0U72�uN ���+��+D�8���U�B8�%�g�d�}�L�ʯ��P��trA �]�)�,�&iۨ$�`�f���`bj&�&n��C=��G�Ie��$9n5철(+�ss�Q���n+ ςHy���K1�rA�\�Q��]8����=���F+�"|í)�SX'P���\ck������.�Mr�� q���ey��L�͋ԍϡ�2�i��ѥ��\-�Z���.�=���OOXǛ�Z�E�^b!� t+J��tĎ�EO��~����D��i��0@�;����\���jm*���s�#ᾓ|�ʠ�0> E�*PCE��J�\�Kg��VuP��_�I(~m�u6��i%�m�L]��#�c�}2�'�%����$SRjԩ�_��$�ʔ:H�L ,f�J)�խ��פ8�\�i�#��n��^����ǒ�`fO���)��0 �ރ�>��"R�Z���- fʇhS;QK4��9���7�a#F)Z��_ʘ�y4\A��*���tϋ���#�2�{�A��[65a|�@_�u9���L��<0�5��|=�sc�N����*�����j�92v����UU.�]��j��E���e�9�~y�qG��G;o���}�����Ǡ��l[�w�N�o U��
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