US2237976A - Apparatus for forming or dressing grinding wheels for use in formgrinding operations - Google Patents
Apparatus for forming or dressing grinding wheels for use in formgrinding operations Download PDFInfo
- Publication number
- US2237976A US2237976A US344991A US34499140A US2237976A US 2237976 A US2237976 A US 2237976A US 344991 A US344991 A US 344991A US 34499140 A US34499140 A US 34499140A US 2237976 A US2237976 A US 2237976A
- Authority
- US
- United States
- Prior art keywords
- forming
- former
- grinding wheels
- operations
- dressing
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/08—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like
- B24B53/081—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like by means of a template
Definitions
- This invention relates to apparatus for forming or dressing grinding wheels for use in form-grinding operations in which the form is of a special kind, such for example, as is required in hobs for machining splines by a generating motion.
- the teeth of the hob it is necessary for the teeth of the hob to have such a curve as will generate plane surfaces at the sides of the splines parallel with each other and with a radial plane passing through the centre of the spline.
- This curve is one of irregular progression and is at present obtained by trial and error from a former-controlled hob-grinding wheel.
- the object of the present invention is to provide improved apparatus for forming or dressing the operative surface of hob-grinding wheels by means of formers.
- the movement of the stylus along the contour of the former is accurately reproduced at the dressing tool in a very simple manner.
- the apparatus employed according to this invention for reproducing the contour of the former at the operative surface of the grinding wheel comprises a slide 4 having a rectilinear motion with respect to the former 2 and carrying a pair of parallel spring arms 5, 6 connected together by means of a rigid yoke I one limb of which carries a stylus 8 adapted for co-operation with the former 2, whilst the other limb carries a dressing tool 9 for forming the operative surface of the hob-grinding wheel 3.
- the slide 4 is mounted in a relatively stationary guide plate 4* to which the former 2 may be conveniently fixed. Any suitable means may be employed for reciprocating the slide in the guide relatively to the former 2.
- Apparatus for the purposes herein described comprising a stationary former and a slide having a rectilinear motion relatively thereto and carrying a pair of rigidly connected spring arms, a stylus fixed to one of said arms and adapted to co-operate with said former and a dressing tool carried by the other of said arms and adapted for forming the operative surface of a hob-grinding wheel.
- Apparatus for the purposes herein described comprising a stationary guide plate, a slide mounted therein, a former fixed to said guide plate, means for reciprocating said slide in said guide relatively to said former, a pair of rigidly connected spring arms carried by said slide, a stylus carried by one of said arms and adapted to have sliding contact with said former, and a dressing too-1 carried by the other of said arms and adapted for forming the operative surface of a hob-grinding wheel.
- Apparatus for forming or dressing grinding wheels comprising a slide, a, pair of relatively spaced parallel spring arms fixedly attached at I their corresponding stationary ends to said slide,
- a stylus mounted adjacent the free end of one of said arms for movement therewith, a dressing tool mounted adjacent the free endof the other of said arms for movement therewith, and means extending between and rigidly connecting thefree end portions of said arms to produce simultaneous equal movement of said stylus and dressing tool.
Description
April 1941- .J. E, VVAINWRIGHT 2.237.976
APPARATUS FOR FURMING OR DRESSING GRINDING WHEELS FOR USE 1N FORM-GRINDING OPERATIONS Filed July 11, 1940 gm 2mm? Ma m 046mm ffiaico-ui Glimmg Patented Apr. 8, 1941 UNITED STATES PATENT OFFICE APPARATUS FOR FORMING OR DRESSING GRINDING WHEELS FOR USE IN FORM- GRINDING OPERATIONS Application July 11, 1940, Serial No. 344,991 In Great Britain November 8, 1938 3 Claims.
This invention relates to apparatus for forming or dressing grinding wheels for use in form-grinding operations in which the form is of a special kind, such for example, as is required in hobs for machining splines by a generating motion. In this method of producing splines it is necessary for the teeth of the hob to have such a curve as will generate plane surfaces at the sides of the splines parallel with each other and with a radial plane passing through the centre of the spline. This curve is one of irregular progression and is at present obtained by trial and error from a former-controlled hob-grinding wheel.
In my co-pending application Serial No. 344,- 992, filed July 11, 1940, a method is described for forming or dressing grinding wheels for use in the production of formers from which to produce hobgrinding wheels to the correct curvature for the purposes above described.
The object of the present invention is to provide improved apparatus for forming or dressing the operative surface of hob-grinding wheels by means of formers.
According to this invention former-controlled apparatus for the purposes herein referred to comprises a slide having a rectilinear motion with respect to the former and carrying a pair of rigidly connected spring arms, one of which carries a stylus cooperating with the former whilst the other arm carries a dressing tool for producing the required form on the hob-grinding wheel. In this way the movement of the stylus along the contour of the former is accurately reproduced at the dressing tool in a very simple manner.
In order that the invention may be clearly understood and readily carried into practical effect, reference is made in describing the same to the accompanying drawing, in which 2 represents the former and 3 the hob-grinding wheel.
The apparatus employed according to this invention for reproducing the contour of the former at the operative surface of the grinding wheel comprises a slide 4 having a rectilinear motion with respect to the former 2 and carrying a pair of parallel spring arms 5, 6 connected together by means of a rigid yoke I one limb of which carries a stylus 8 adapted for co-operation with the former 2, whilst the other limb carries a dressing tool 9 for forming the operative surface of the hob-grinding wheel 3. The slide 4 is mounted in a relatively stationary guide plate 4* to which the former 2 may be conveniently fixed. Any suitable means may be employed for reciprocating the slide in the guide relatively to the former 2.
I claim:
1. Apparatus for the purposes herein described comprising a stationary former and a slide having a rectilinear motion relatively thereto and carrying a pair of rigidly connected spring arms, a stylus fixed to one of said arms and adapted to co-operate with said former and a dressing tool carried by the other of said arms and adapted for forming the operative surface of a hob-grinding wheel.
2. Apparatus for the purposes herein described, comprising a stationary guide plate, a slide mounted therein, a former fixed to said guide plate, means for reciprocating said slide in said guide relatively to said former, a pair of rigidly connected spring arms carried by said slide, a stylus carried by one of said arms and adapted to have sliding contact with said former, and a dressing too-1 carried by the other of said arms and adapted for forming the operative surface of a hob-grinding wheel.
3. Apparatus for forming or dressing grinding wheels comprising a slide, a, pair of relatively spaced parallel spring arms fixedly attached at I their corresponding stationary ends to said slide,
a stylus mounted adjacent the free end of one of said arms for movement therewith, a dressing tool mounted adjacent the free endof the other of said arms for movement therewith, and means extending between and rigidly connecting thefree end portions of said arms to produce simultaneous equal movement of said stylus and dressing tool.
J OHN ERNEST WAINWRIGHT.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2237976X | 1938-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2237976A true US2237976A (en) | 1941-04-08 |
Family
ID=10901950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US344991A Expired - Lifetime US2237976A (en) | 1938-11-08 | 1940-07-11 | Apparatus for forming or dressing grinding wheels for use in formgrinding operations |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2237976A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2584121A (en) * | 1948-01-29 | 1952-02-05 | John C Garand | Device for contour dressing grinding wheels |
| DE2718339A1 (en) * | 1976-05-11 | 1977-11-24 | Cincinnati Milacron Inc | DEVICE AND METHOD FOR GRINDING WHEEL DRESSING |
-
1940
- 1940-07-11 US US344991A patent/US2237976A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2584121A (en) * | 1948-01-29 | 1952-02-05 | John C Garand | Device for contour dressing grinding wheels |
| DE2718339A1 (en) * | 1976-05-11 | 1977-11-24 | Cincinnati Milacron Inc | DEVICE AND METHOD FOR GRINDING WHEEL DRESSING |
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