US2341094A - Lapping arbor - Google Patents

Lapping arbor Download PDF

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Publication number
US2341094A
US2341094A US496244A US49624443A US2341094A US 2341094 A US2341094 A US 2341094A US 496244 A US496244 A US 496244A US 49624443 A US49624443 A US 49624443A US 2341094 A US2341094 A US 2341094A
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Prior art keywords
lapping
arbor
lap
passage
compound
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Expired - Lifetime
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US496244A
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Arthur J Hackman
Madeline C Hackman
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/18—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor with cooling provisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery

Definitions

  • Our invention relates to a new and useful improvement in a lapping arbor.
  • a lap which is mounted on an arbor which serves to support the lap and rotate it.
  • One type of lap which is used comprises a cylindrical tube having a spiral slot formed therein. The slot serves as a means for picking up the lapping compound and returning the lapping compound in the lapping operation.
  • known methods of applying the lapping compound it is practically impossible to obtain uniform distribution of the lapping compound and to feed the lapping compound during the lapping operation.
  • the lapping compound usually consists of a mixture of abrasive material and lubricant and the consistency, of course, may be varied for different types of work. It is an object of the present invention to provide a lapping arbor so constructed and arranged that the lapping compound may be delivered through the arbor to the lap even while the lapping operation is being performed.
  • Fig. 1 is a side elevational view of the invention
  • Fig. 2 is a longitudinal, central, vertical, sectional view of the invention
  • Fig. 3 is an enlarged sectional view taken on line 3-3 of Fig. 2,
  • Fig. 4 is an enlarged sectional view taken on line 4-4 of Fig. 2,
  • Fig. 5 is an enlarged sectional view taken on line 55 of Fig. 2.
  • an arbor 9 which may be suitably attached to a driving machine for rotating the same, one end of the arbor 9 being provided with the internally threaded socket 10 to effect attachment to the driving machine.
  • a bore or passage ll Formed in this arbor 9, is a bore or passage ll, opening through the lateral passage l2 into the peripheral groove l5.
  • a cylindrical lap l3 Positioned on the arbor 9, in the usual manner is a cylindrical lap l3, having the spiral slot 14 formed therein, the lap overlying the peripheral groove I5.
  • the construction is such that the lapping compound may be delivered to passage II outwardly through the passage l2 into the peripheral groove [5 and thus into the spiral slot Hi. This makes possible a continuous delivery of lapping compound while the mechanism is in operation and assures a uniform distribution. Also, because of the delivery of the compound in this manner, a speed-up in operation is obtained.
  • a lapping arbor of the class described comprising an elongated body having a longitudinally directed bore formed therein, proceeding inwardly from one end and closed at the opposite end and communicating through a lateral passage with a peripheral groove formed in said body intermediate its ends.
  • a lapping arbor comprising an elongated body having a longitudinally directed passage formed therein and opening through one end thereof, and communicating through a lateral opening with the periphery thereof; and a lap mounted on said body and overlying said lateral opening and having a compound carrying slot formed therein.
  • a lapping arbor comprising an elongated body having a passage formed therein proceeding inwardly from one end thereof, and closed at its opposite end and communicating through a lateral passage with a peripheral groove formed in said body; and a cylindrical lap having a spiral slot formed therein, mounted on said body to overlie said groove.

Description

Fegfl- 1944- v A. J. HACKMAN ETAL- ,34
LAPPING ARBOR Filed July 26, I943 INVENTORS MAN MAN HACK ms ,4 TTOPNEY m0 MM L Wm mM .2 A.
Patented Feb. 8, 1944 LAPPING ARBOR Arthur J. Hackman and Madeline C. Hackman, Grosse Pointe, Mich.
Application July 26, 1943, Serial No. 496,244
3 Claims.
Our invention relates to a new and useful improvement in a lapping arbor. In lapping operations it is customary to use a lap which is mounted on an arbor which serves to support the lap and rotate it. One type of lap which is used comprises a cylindrical tube having a spiral slot formed therein. The slot serves as a means for picking up the lapping compound and returning the lapping compound in the lapping operation. In known methods of applying the lapping compound, it is practically impossible to obtain uniform distribution of the lapping compound and to feed the lapping compound during the lapping operation.
The lapping compound usually consists of a mixture of abrasive material and lubricant and the consistency, of course, may be varied for different types of work. It is an object of the present invention to provide a lapping arbor so constructed and arranged that the lapping compound may be delivered through the arbor to the lap even while the lapping operation is being performed.
It is another object of the invention to provide, a combination, a lap having a slot formed therethrough and a supporting arbor having a longitudinally directed bore communicating through a radial passage with the slot in the lap to form a passage for delivery of lapping compound to the lap.
It is another object of the present invention to provide a lapping arbor having a delivery passage formed therein and communicating with a peripheral distribution groove for effectively delivering the lapping compound to a lap mounted on the arbor.
Other objects will appear hereinafter.
It is recognized that various modifications and changes may be made in the detail of structure shown and it is intended that such modifications and changes shall be embraced within the scope of the appended claims.
Forming a part of this specification is a drawing in which,
Fig. 1 is a side elevational view of the invention,
Fig. 2 is a longitudinal, central, vertical, sectional view of the invention,
Fig. 3 is an enlarged sectional view taken on line 3-3 of Fig. 2,
Fig. 4 is an enlarged sectional view taken on line 4-4 of Fig. 2,
Fig. 5 is an enlarged sectional view taken on line 55 of Fig. 2.
In the drawing I have illustrated an arbor 9 which may be suitably attached to a driving machine for rotating the same, one end of the arbor 9 being provided with the internally threaded socket 10 to effect attachment to the driving machine. Formed in this arbor 9, is a bore or passage ll, opening through the lateral passage l2 into the peripheral groove l5.
Positioned on the arbor 9, in the usual manner is a cylindrical lap l3, having the spiral slot 14 formed therein, the lap overlying the peripheral groove I5.
The construction is such that the lapping compound may be delivered to passage II outwardly through the passage l2 into the peripheral groove [5 and thus into the spiral slot Hi. This makes possible a continuous delivery of lapping compound while the mechanism is in operation and assures a uniform distribution. Also, because of the delivery of the compound in this manner, a speed-up in operation is obtained.
What we claim as new is:
1. A lapping arbor of the class described comprising an elongated body having a longitudinally directed bore formed therein, proceeding inwardly from one end and closed at the opposite end and communicating through a lateral passage with a peripheral groove formed in said body intermediate its ends.
2. In combination, a lapping arbor comprising an elongated body having a longitudinally directed passage formed therein and opening through one end thereof, and communicating through a lateral opening with the periphery thereof; and a lap mounted on said body and overlying said lateral opening and having a compound carrying slot formed therein.
3. In combination, a lapping arbor comprising an elongated body having a passage formed therein proceeding inwardly from one end thereof, and closed at its opposite end and communicating through a lateral passage with a peripheral groove formed in said body; and a cylindrical lap having a spiral slot formed therein, mounted on said body to overlie said groove.
ARTHUR J. HACKMAN. MADELINE C. HACKMAN.
US496244A 1943-07-26 1943-07-26 Lapping arbor Expired - Lifetime US2341094A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188755A (en) * 1978-04-19 1980-02-19 Ex-Cell-O Corporation Expandable abrading tool and abrasive insert and washers thereof
US5197231A (en) * 1991-12-11 1993-03-30 The Gleason Works Rotary cutter having expanded cutting ring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188755A (en) * 1978-04-19 1980-02-19 Ex-Cell-O Corporation Expandable abrading tool and abrasive insert and washers thereof
US5197231A (en) * 1991-12-11 1993-03-30 The Gleason Works Rotary cutter having expanded cutting ring

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