GB815165A - Machine tool - Google Patents
Machine toolInfo
- Publication number
- GB815165A GB815165A GB26357A GB26357A GB815165A GB 815165 A GB815165 A GB 815165A GB 26357 A GB26357 A GB 26357A GB 26357 A GB26357 A GB 26357A GB 815165 A GB815165 A GB 815165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clutch
- movement
- clutches
- motor
- disengaged
- 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
Links
- 230000002441 reversible Effects 0.000 abstract 1
- 230000001360 synchronised Effects 0.000 abstract 1
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
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
815,165. Grinding. REID BROS CO. Inc. Jan. 3, 1957 No. 263/57. Class 60. [Also in Group XXXVII] In a machine tool such as a surface grinder, a cross-feed system for controlling the lateral advancing of a work table 12, Fig. 2, provided with means for driving it back and forth comprises driving means 85, Fig. 4, a clutch 83 for engaging the driving means with the table advancing means, and means synchronized with the back -and-forth movement of the table for periodically actuating the clutch at a predetermined position in the back-and-forth course of the table. The back-and-forth movement of the table, which is mounted on slideways 32 on a cross-slide 24 carried in slideways 30, is effected by a flexible rack 38 secured at its ends to the table and driven over rollers 44 by a pinion 40 which is slidable on a splined shaft 42 driven in opposite directions from a reversing mechanism 56 by a D.C. motor 52 and speedreduction gear 54. The reversing mechanism is operated at each end of the back-and-forth movement of the table by arms 68, 69 secured to the table and actuating the rocket 67 of a switch 66 so that two electro-magneticallyoperated clutches 59, 60 in the reversing mechanism 56 are alternately energized; the circuits of the electro-magnets controlling the clutches contain variable resistances which control the amount of slip of the clutches and, therefore, the abruptness of the reversal of the table. Variation of the voltage supplied to the armature of the D.C. motor 52 controls the speed of reciprocation of the table 12. Lateral advance of the cross-slide 24 on the slideways 30 is provided at either or both ends of the back-andforth movement by a three-phase motor 85 driving a speed-reduction gear 86 and the clutch 83 which, when engaged with a member 82 splined to a shaft 80, rotates a lead screw 48 to axially move a nut 46 secured to the crossslide; movement of the nut carries the pinion 40 along the shaft 42 to maintain the rack 38 in alignment; when the clutch 83 is disengaged, the member 82 is held against rotation by a brake clutch 84 secured to the frame 10 of the machine. The clutch 83 is engaged and clutch 84 disengaged at the same time as one or other of the clutches 59, 60 is operated under the control of relays actuated by the switch 66. Simultaneously, an adjustable time-delay relay-mechanism is operated to maintain the clutch 83 in engagement for a length of time depending upon the increment of lateral movement reauired; on the completion of the time delay, the clutch 83 is disengaged and clutch 84 engaged. Limit switches 88.7, which co-operate with lugs 88.8 on the cross slide 24 are provided on the frame at the limits of the full lateral movement in both directions to reverse the connections to the motor 85 and, therefore, the direction of lateral movement. The motor 85 may be connected by a clutch 105 to a shaft 106 which imparts vertical movement to a spindle head 26 and grinding wheel 14. The back and forth and lateral movements of the table are automatically controlled by relays which close circuits to energise the electro-magnets operating the clutches. Manual control of the clutches and motor 85 is provided by push-buttons arranged on a panel 110 mounted on the machine. Manual operation of the longitudinal movement of the table is provided by a handwheel 18 which, when a clutch 64 is engaged and the clutches 59, 60 are inoperative, is connected to the reversing mechanism 56 and shaft 42. The lateral movement may be similarly manually operated when the clutch 84 is disengaged by a handwheel 20 which is geared to the lead screw 48. Manual adjustment of the spindle head is provided by a handwheel 22 when the clutch 105 is disengaged.
Publications (1)
Publication Number | Publication Date |
---|---|
GB815165A true GB815165A (en) | 1959-06-17 |
Family
ID=1593306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26357A Expired GB815165A (en) | 1957-01-03 | Machine tool |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB815165A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104097130A (en) * | 2014-07-10 | 2014-10-15 | 江苏三鼎水处理设备有限公司 | Polisher |
CN109623039A (en) * | 2018-12-29 | 2019-04-16 | 张家港市剑泉工具制造有限公司 | A kind of jaw facing attachment |
CN110355665A (en) * | 2019-07-31 | 2019-10-22 | 苏州仁尔必思电子科技有限公司 | A kind of three-dimensional multistation processing unit (plant) of electronic component |
CN117620799A (en) * | 2023-12-04 | 2024-03-01 | 株洲耀辉光机电研究开发有限公司 | Automatic metal surface processing equipment |
CN117620799B (en) * | 2023-12-04 | 2024-05-10 | 株洲耀辉光机电研究开发有限公司 | Automatic metal surface processing equipment |
-
1957
- 1957-01-03 GB GB26357A patent/GB815165A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104097130A (en) * | 2014-07-10 | 2014-10-15 | 江苏三鼎水处理设备有限公司 | Polisher |
CN109623039A (en) * | 2018-12-29 | 2019-04-16 | 张家港市剑泉工具制造有限公司 | A kind of jaw facing attachment |
CN110355665A (en) * | 2019-07-31 | 2019-10-22 | 苏州仁尔必思电子科技有限公司 | A kind of three-dimensional multistation processing unit (plant) of electronic component |
CN117620799A (en) * | 2023-12-04 | 2024-03-01 | 株洲耀辉光机电研究开发有限公司 | Automatic metal surface processing equipment |
CN117620799B (en) * | 2023-12-04 | 2024-05-10 | 株洲耀辉光机电研究开发有限公司 | Automatic metal surface processing equipment |
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