ES241721U - Broca espiral provista de metal duro. - Google Patents

Broca espiral provista de metal duro.

Info

Publication number
ES241721U
ES241721U ES1979241721U ES241721U ES241721U ES 241721 U ES241721 U ES 241721U ES 1979241721 U ES1979241721 U ES 1979241721U ES 241721 U ES241721 U ES 241721U ES 241721 U ES241721 U ES 241721U
Authority
ES
Spain
Prior art keywords
hard metal
metal insert
drill
formula
angle
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
ES1979241721U
Other languages
English (en)
Other versions
ES241721Y (es
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19782809291 external-priority patent/DE2809291A1/de
Priority claimed from DE19782828644 external-priority patent/DE2828644A1/de
Application filed by Individual filed Critical Individual
Publication of ES241721U publication Critical patent/ES241721U/es
Application granted granted Critical
Publication of ES241721Y publication Critical patent/ES241721Y/es
Expired legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)
  • Earth Drilling (AREA)

Abstract

Broca espiral provista de metal duro, caracterizada porque su filo está dado de manera que su ángulo **fórmula** se halla en el campo de 120-125º y su ángulo de incidencia **fórmula** en el campo de 10-15º, templándose superficialmente el vástago de broca en cuyo extremo se fija una plaquita de metal duro mediante soldadura dura que tiene una resistencia al calor de aproximadamente 1.000º C presentando en dicho extremo una superficie, de apoyo para un dispositivo sujetador que está en relación de situación predeterminada respecto a la superficie de apoyo de la plaquita de metal duro y porque en el extremo opuesto del vástago de broca se dispone una ranura fresada cuyo plano principal transcurre paralelamente a la superficie de apoyo de la plaquita de metal duro presentando igualmente en dicho extremo un alargamiento elevado o hundido, prismático, para sujetar la broca espiral en un soporte para su afilado.
ES1979241721U 1978-03-02 1979-02-28 Broca espiral provista de metal duro. Expired ES241721Y (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782809291 DE2809291A1 (de) 1978-03-02 1978-03-02 Hartmetallbestueckter spiralbohrer
DE19782828644 DE2828644A1 (de) 1978-06-27 1978-06-27 Hartmetallbestueckter spiralbohrer

Publications (2)

Publication Number Publication Date
ES241721U true ES241721U (es) 1979-05-01
ES241721Y ES241721Y (es) 1979-11-01

Family

ID=25773975

Family Applications (1)

Application Number Title Priority Date Filing Date
ES1979241721U Expired ES241721Y (es) 1978-03-02 1979-02-28 Broca espiral provista de metal duro.

Country Status (4)

Country Link
JP (1) JPS54127092A (es)
DK (1) DK86679A (es)
ES (1) ES241721Y (es)
NO (1) NO790638L (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58148701A (ja) * 1982-02-27 1983-09-03 松下電工株式会社 化粧単板の製法
JPS61127911U (es) * 1985-01-29 1986-08-11

Also Published As

Publication number Publication date
NO790638L (no) 1979-09-04
JPS54127092A (en) 1979-10-02
DK86679A (da) 1979-09-03
ES241721Y (es) 1979-11-01

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Legal Events

Date Code Title Description
FD1K Utility model lapsed

Effective date: 20010301