US3538646A - Reciprocator for grinding wheel spindles - Google Patents
Reciprocator for grinding wheel spindles Download PDFInfo
- Publication number
- US3538646A US3538646A US811692A US3538646DA US3538646A US 3538646 A US3538646 A US 3538646A US 811692 A US811692 A US 811692A US 3538646D A US3538646D A US 3538646DA US 3538646 A US3538646 A US 3538646A
- Authority
- US
- United States
- Prior art keywords
- reciprocator
- grinding wheel
- housing
- workpiece
- cam
- 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
Links
- 230000004075 alteration Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000364057 Peoria Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
Images
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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/16—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18296—Cam and slide
- Y10T74/18304—Axial cam
Definitions
- a reciprocator for a grinding wheel comprising an air motor mounted within a reciprocatable sleeve upon which a cam is fixed.
- the cam is reciprocably actuated by a pair of rollers mounted on a rotatable housing.
- This invention relates to an improved reciprocator, and more particularly to a means for reciprocating a grinding wheel utilized to remove parting line flash from the inside diameters of rough castings.
- the reciprocator comprises a rotatable housing carrying adjustable rollers on the interior of the housing which act upon a reciprocable, non-rotatable plate or cam which causes the longitudinal reciprocation of a rotating grinding wheel.
- FIG. 1 is a side elevation, partly in section, illustrating the means for rotating the workpiece relative to the grinding wheel;
- FIG. 2 is a longitudinal sectional illustration of the reciprocator of the present invention.
- a machine base 11 upon which is mounted a wear plate 13 having a workpiece 15 secured thereto.
- a grinding wheel 17 is illustrated within the workpiece and is rotated and reciprocated in a manner to be described.
- the spindle 29, through a sprocket 31, a chain 33, and a sprocket 35 drives a pair of workpiece engaging-and-rotating means, one of which is shown at 37.
- FIG. 1 consists of a pair of radially grooved wheels around which an O-ring is stretched for frictional engagement with the workpiece 15.
- FIG. 2 there is shown a conventional air motor 41 having a spindle 43 with a shoulder 45 for mounting the conventional circular grinding wheel 17 by means of a cap screw 47 or any other suitable fastening means.
- the air motor is rigidly mounted within the reciprocator, generally shown at 49, by means of a conventional split tapered collet 53 which grips the outer diameter 51 of the motor as the collet is forced into a sleeve 57 in the reciprocator.
- Reciprocator 49 is suspended from the machine base 11 by any suitable structure such as shown at 59.
- Supports 59 are suitably fixed to a nonrotating collar 61, through which the non-rotatable sleeve 57 reciprocates.
- a dust seal 63 or any other dust shielding means as known in the art, may be provided as necessary.
- a rotatable housing 65 of the reciprocator is driven by a sprocket 67 through a drive system, (not shown) which may be powered by the motor 21 or other suitable drive means.
- the lower portion of housing 65 is mounted on support 59 and is supported for rotation by an upper bearing 69 and a lower bearing, generally indicated at 71.
- An upper roller 73 and a lower roller 75 are mounted on the housing 65 by means of a plate 77 which is held to the housing by a suitable means including a bar 79.
- the rollers are mounted on shafts 81 and 83 respectively and may be adjusted radially by adjusting the amount the shafts extend beyond nuts 85 and 87 which abut the plate 77.
- Roller 73 and 75 are situated on either side of a washer-like, or cylindrical, cam 89 which is fixedly mounted on the reciprocatable, but nonrotatable, sleeve 57.
- cam 89 which is fixedly mounted on the reciprocatable, but nonrotatable, sleeve 57.
- rollers 73 and 75 rotate about the cam 89 causing it, and the sleeve 57 to which it is attached, to reciprocate, since the cam is angularly mounted on the sleeve. If the rods 81 and 83 are withdrawn from the housing so as to move rollers 73 and 75 radially outwardly, the amount of reciprocation will be increased.
- a clearance 91 is provided in the Wall of the housing 65 so that plate 77 may be raised or lowered by adjusting a bar 79 by means such as set screws, not shown. This feature allows the limits of reciprocation of the sleeve 57, therefore the grinding wheel 17, to be controlled.
- the operation of the device may be described as follows: Motor 21, through the drive means previously described, rotates workpiece 15 in a first direction and may also rotate the housing 65; alternatively, other means to rotate housing 65 may be provided. Air, entering the air motor 41 via a pipe 95 drives the air motor 41 such that the grinding wheel 17 is rotated in a second, or opposite direction, relative to that of workpiece 15. As the housing 65 rotates, wheels 73 and 75, moving about cam 89, cause the sleeve 57, in which the air motor is mounted, to reciprocate within the limits defined by the positions of rollers 73 and 75.
- a reciprocator comprising a rotatable housing, roller means adjustably mounted on the housing, a cam means mounted for reciprocatable movement in the housing, means for moving the roller means relative to the cam surface of the cam means, a spindle means attached to the cam means, and means for rotating the spindle.
- the reciprocator of claim 1 including means for adjusting the roller means radially relative to the rotatable housing.
- the reciprocator of claim 1 including means for adjusting the roller means longitudinally relative to the rotatable housing.
- the reciprocator of claim 1 including means for rotating a workpiece in a direction opposite to the direction of rotation of the spindle.
- the reciprocator of claim 4 including a tool means mounted on the spindle whereby the tool means is rotated and reciprocated relative to the workpiece.
- the reciprocator of claim 1 including a clearance aperture in the rotatable housing, means allowing longitudinal movement of the roller meanslimited by the boundaries of the clearance aperture-relative to the rotatable housing, and means allowing radial movement of the roller means relative to the rotatable housing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
Nov. 10, 1970 I R. c. BEAL RECIPROCATOR FOR GRINDING WHEEL SPINDLES 2 Sheets-Sheet 1 Filed March 26,
INVENTOR RONALD C. BEAL ATTORNEYS Nov. 10; 1970 R. c. BEAL 3,53
RECIPROCATOR FOR GRINDING WHEEL SPINDLES Filed March 26, 1969 2 Sheets-Sheet 2 INVENTOR RONALD c. BEAL K 4-4 7; 1 Arm EYS United States Patent O 3,538,646 RECIPROCATOR FOR GRINDING WHEEL SPINDLES Ronald C. Beal, Pekin, Ill., assignor to Caterpillar Tractor Co., Peoria, lll., a corporation of California Filed Mar. 26, 1969, Ser. No. 811,692 Int. Cl. B24b 7/00 US. CI. 5134 6 Claims ABSTRACT OF THE DISCLOSURE A reciprocator for a grinding wheel comprising an air motor mounted within a reciprocatable sleeve upon which a cam is fixed. The cam is reciprocably actuated by a pair of rollers mounted on a rotatable housing.
BACKGROUND AND SUMMARY OF THE INVENTION This invention relates to an improved reciprocator, and more particularly to a means for reciprocating a grinding wheel utilized to remove parting line flash from the inside diameters of rough castings.
In the machine tool art, it is expedient to rotate a 'workpiece which is being ground on the inside diameter for well known reasons. Usually the work is rotated in the opposite direction to that in which the grinding wheel is rotated. Further, it is usually necessary to cause the wheel to move longitudinally along the workpiece surface to achieve a more uniform wheel wear while producing a higher quality finish in less time than would be possible were the wheel permitted to remain in a single longitudinal position.
Basically, the reciprocator comprises a rotatable housing carrying adjustable rollers on the interior of the housing which act upon a reciprocable, non-rotatable plate or cam which causes the longitudinal reciprocation of a rotating grinding wheel.
It is therefore an object of this invention to provide a new and improved grinding wheel reciprocating mechanism.
It is a further object hereof to provide a grinding wheel reciprocator in which the amount of reciprocation can be controlled and adjusted.
It is a further object hereof to provide a grinding wheel reciprocator, together with means for rotating a workpiece to be ground.
It is also an object hereof to provide a reciprocator having a fixed coaxial relationship between the rotating and non-rotating portions thereof.
Other objects and advantages of the present invention will become apparent from the following description and claims as illustrated in the accompanying drawings which, by way of illustration, show a preferred embodiment of the present invention and principles thereof and what is now considered to be the best mode contemplated for applying these principles. It is recognized that other embodiments of the invention utilizing the same or equivalent principles may be used, and structural changes may be made as desired by those skilled in the art, without departing from the present invention and purview of the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation, partly in section, illustrating the means for rotating the workpiece relative to the grinding wheel; and
FIG. 2 is a longitudinal sectional illustration of the reciprocator of the present invention.
DETAILED DESCRIPTION There is shown in the drawings, a machine base 11 upon which is mounted a wear plate 13 having a workpiece 15 secured thereto. A grinding wheel 17 is illustrated within the workpiece and is rotated and reciprocated in a manner to be described. As shown in FIG. 1, a motor 21, in cooperation with a sprocket 23, a chain 25, and a sprocket 27, drives a spindle 29. In turn, the spindle 29, through a sprocket 31, a chain 33, and a sprocket 35, one of which is shown, drives a pair of workpiece engaging-and-rotating means, one of which is shown at 37.
Although any suitable work engaging-and-rotating means may be used, the means illustrated in FIG. 1 consists of a pair of radially grooved wheels around which an O-ring is stretched for frictional engagement with the workpiece 15.
Now referring to the reciprocator device illustrated in FIG. 2, there is shown a conventional air motor 41 having a spindle 43 with a shoulder 45 for mounting the conventional circular grinding wheel 17 by means of a cap screw 47 or any other suitable fastening means. The air motor is rigidly mounted within the reciprocator, generally shown at 49, by means of a conventional split tapered collet 53 which grips the outer diameter 51 of the motor as the collet is forced into a sleeve 57 in the reciprocator.
A dust seal 63, or any other dust shielding means as known in the art, may be provided as necessary.
A rotatable housing 65 of the reciprocator is driven by a sprocket 67 through a drive system, (not shown) which may be powered by the motor 21 or other suitable drive means. The lower portion of housing 65 is mounted on support 59 and is supported for rotation by an upper bearing 69 and a lower bearing, generally indicated at 71.
An upper roller 73 and a lower roller 75 are mounted on the housing 65 by means of a plate 77 which is held to the housing by a suitable means including a bar 79. The rollers are mounted on shafts 81 and 83 respectively and may be adjusted radially by adjusting the amount the shafts extend beyond nuts 85 and 87 which abut the plate 77.
A clearance 91 is provided in the Wall of the housing 65 so that plate 77 may be raised or lowered by adjusting a bar 79 by means such as set screws, not shown. This feature allows the limits of reciprocation of the sleeve 57, therefore the grinding wheel 17, to be controlled.
The operation of the device may be described as follows: Motor 21, through the drive means previously described, rotates workpiece 15 in a first direction and may also rotate the housing 65; alternatively, other means to rotate housing 65 may be provided. Air, entering the air motor 41 via a pipe 95 drives the air motor 41 such that the grinding wheel 17 is rotated in a second, or opposite direction, relative to that of workpiece 15. As the housing 65 rotates, wheels 73 and 75, moving about cam 89, cause the sleeve 57, in which the air motor is mounted, to reciprocate within the limits defined by the positions of rollers 73 and 75.
Thus, the applicant has produced a grinding wheel reciprocator which rotates the workpiece in one direction, while the grinding wheel is rotating in the opposite direction and is reciprocated within prescribed limits within the workpiece. Although only one embodiment of this invention has been illustrated and described, it will be obvious to those skilled in the art that many modifications and alterations of the structure may be made, but such alterations and modifications will not exceed the purview of the following claims.
What is claimed is:
1. A reciprocator comprising a rotatable housing, roller means adjustably mounted on the housing, a cam means mounted for reciprocatable movement in the housing, means for moving the roller means relative to the cam surface of the cam means, a spindle means attached to the cam means, and means for rotating the spindle.
2. The reciprocator of claim 1 including means for adjusting the roller means radially relative to the rotatable housing.
3. The reciprocator of claim 1 including means for adjusting the roller means longitudinally relative to the rotatable housing.
4. The reciprocator of claim 1 including means for rotating a workpiece in a direction opposite to the direction of rotation of the spindle.
5. The reciprocator of claim 4 including a tool means mounted on the spindle whereby the tool means is rotated and reciprocated relative to the workpiece.
6. The reciprocator of claim 1 including a clearance aperture in the rotatable housing, means allowing longitudinal movement of the roller meanslimited by the boundaries of the clearance aperture-relative to the rotatable housing, and means allowing radial movement of the roller means relative to the rotatable housing.
References Cited UNITED STATES PATENTS 1,912,491 6/1933 Minett 5l34 2,252,176 8/1941 Harris S134 2,959,967 11/1960 Metzner 7656 WILLIAM R. ARMSTRONG, Primary Examiner US. Cl. X.R. 51-48; 745 6
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81169269A | 1969-03-26 | 1969-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3538646A true US3538646A (en) | 1970-11-10 |
Family
ID=25207283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US811692A Expired - Lifetime US3538646A (en) | 1969-03-26 | 1969-03-26 | Reciprocator for grinding wheel spindles |
Country Status (1)
Country | Link |
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US (1) | US3538646A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045433A1 (en) * | 1980-08-02 | 1982-02-10 | Maschinenfabrik Reinhausen Gmbh | Polishing or grinding machine having an axially reciprocating and rotatable tool spindle |
US4833502A (en) * | 1985-07-11 | 1989-05-23 | Canon Kabushiki Kaisha | Image forming apparatus having an image bearing member reciprocally movable in the direction of the rotational axis thereof |
US5472320A (en) * | 1994-03-23 | 1995-12-05 | Prominent Dosiertechnik Gmbh | Displacement piston pump |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1912491A (en) * | 1928-01-17 | 1933-06-06 | United Shoe Machinery Corp | Buffing machine |
US2252176A (en) * | 1936-12-19 | 1941-08-12 | Micromatic Hone Corp | Machine for grinding cylindrical surfaces |
US2959967A (en) * | 1958-11-10 | 1960-11-15 | Wheeling Steel Corp | Mechanical motion |
-
1969
- 1969-03-26 US US811692A patent/US3538646A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1912491A (en) * | 1928-01-17 | 1933-06-06 | United Shoe Machinery Corp | Buffing machine |
US2252176A (en) * | 1936-12-19 | 1941-08-12 | Micromatic Hone Corp | Machine for grinding cylindrical surfaces |
US2959967A (en) * | 1958-11-10 | 1960-11-15 | Wheeling Steel Corp | Mechanical motion |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045433A1 (en) * | 1980-08-02 | 1982-02-10 | Maschinenfabrik Reinhausen Gmbh | Polishing or grinding machine having an axially reciprocating and rotatable tool spindle |
US4398374A (en) * | 1980-08-02 | 1983-08-16 | Maschinenfabrik Reinhausen Gebruder Scheubeck Gmbh & Co. Kg | Polishing machine having a rotary reciprocating shaft |
US4833502A (en) * | 1985-07-11 | 1989-05-23 | Canon Kabushiki Kaisha | Image forming apparatus having an image bearing member reciprocally movable in the direction of the rotational axis thereof |
US5472320A (en) * | 1994-03-23 | 1995-12-05 | Prominent Dosiertechnik Gmbh | Displacement piston pump |
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