JPS56163040A - Formation of brake drum - Google Patents

Formation of brake drum

Info

Publication number
JPS56163040A
JPS56163040A JP6637781A JP6637781A JPS56163040A JP S56163040 A JPS56163040 A JP S56163040A JP 6637781 A JP6637781 A JP 6637781A JP 6637781 A JP6637781 A JP 6637781A JP S56163040 A JPS56163040 A JP S56163040A
Authority
JP
Japan
Prior art keywords
drum
brake
brake drum
pressing
hollow groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6637781A
Other languages
Japanese (ja)
Other versions
JPS5932217B2 (en
Inventor
Yuji Higuma
Sakae Isogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6637781A priority Critical patent/JPS5932217B2/en
Publication of JPS56163040A publication Critical patent/JPS56163040A/en
Publication of JPS5932217B2 publication Critical patent/JPS5932217B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To improve productivity by forming a hollow groove for winding of a brake band by pressing on the outside circumferential surface of a brake drum.
CONSTITUTION: A brake drum 17 and a collar 18 formed at one end on the outside circumference of the drum 17 are formed into one piece by pressing. Next, when a projecting part 19 is formed at the other end of the outside circumference of the drum 17 by ironing together the outside circumferential metal of the drum 17, the brake drum 17 having a hollow groove 21 for the purpose of winding a brake band 20 is made. Hence, the hollow groove is formed on the outside circumference of the drum 17 by pressing alone without cutting and without using any separate members and productivity is considerably improved.
COPYRIGHT: (C)1981,JPO&Japio
JP6637781A 1981-04-30 1981-04-30 Brake drum molding method Expired JPS5932217B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6637781A JPS5932217B2 (en) 1981-04-30 1981-04-30 Brake drum molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6637781A JPS5932217B2 (en) 1981-04-30 1981-04-30 Brake drum molding method

Publications (2)

Publication Number Publication Date
JPS56163040A true JPS56163040A (en) 1981-12-15
JPS5932217B2 JPS5932217B2 (en) 1984-08-07

Family

ID=13314069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6637781A Expired JPS5932217B2 (en) 1981-04-30 1981-04-30 Brake drum molding method

Country Status (1)

Country Link
JP (1) JPS5932217B2 (en)

Also Published As

Publication number Publication date
JPS5932217B2 (en) 1984-08-07

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