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CN-122018138-A - Knob device and method combining coarse adjustment and fine adjustment

CN122018138ACN 122018138 ACN122018138 ACN 122018138ACN-122018138-A

Abstract

The invention provides a knob device and a method for combining coarse adjustment and fine adjustment, which relate to the technical field of positioning adjustment of precise instruments, wherein the knob device comprises a fine adjustment hand button, a coarse adjustment hand button, a fixed gear ring, a planetary gear train, an output shaft and an output gear ring, the fixed gear ring is arranged on the coarse adjustment hand button, the planetary gear train is connected with the fine adjustment hand button, the fixed gear ring and the output gear ring are meshed with a planetary gear on a planetary gear system for transmission, the device has the advantages that two modes of quick rough positioning and fine adjustment positioning are realized, so that the device is quickly and accurately adjusted to a designated position, the device is compact in structure and small in occupied space, tooth difference exists between the fixed gear ring and the output gear ring, and the gear ratio difference is realized through meshing dislocation caused by the tooth difference, so that the purpose of speed reduction and accurate adjustment is achieved, and the technical problem that the occupied space, the adjustment efficiency and the precision are difficult to consider in the existing adjusting device is solved.

Inventors

  • WEI PINGPING
  • SHI WEIBIAO
  • XU XIAOLI
  • WU TONG
  • ZHU JING

Assignees

  • 长春市见真精密机械制造有限公司

Dates

Publication Date
20260512
Application Date
20260415

Claims (10)

  1. 1. The knob device with the combination of coarse adjustment and fine adjustment comprises a fine adjustment knob (1) and a coarse adjustment knob (5), and is characterized in that the fine adjustment knob (1) and the coarse adjustment knob (5) are coaxially arranged, a fixed gear ring (4) is arranged on the coarse adjustment knob (5), the knob device further comprises a planetary gear train (2) and an output shaft (701), the planetary gear train (2) is connected with the fine adjustment knob (1), an output gear ring is arranged at one end, close to the fine adjustment knob (1), of the output shaft (701), the fixed gear ring (4) and the output gear ring are in meshed transmission with a planet wheel (205) on the planetary gear train (2), and tooth difference exists between the fixed gear ring (4) and the output gear ring.
  2. 2. The knob device with coarse and fine adjustment combination according to claim 1, wherein the planetary gear train (2) further comprises a spindle (201), a front end cover (202) and a rear end cover (206), the front end cover (202) and the rear end cover (206) are both mounted on the spindle (201), and the planetary gear (205) is mounted between the front end cover (202) and the rear end cover (206).
  3. 3. A knob device with coarse and fine adjustment according to claim 2, characterized in that the knob device further comprises a connecting key (10) and a second screw (11), the fine adjustment knob (1) is connected with the spindle (201) by means of the second screw (11), the connecting key (10) being arranged on the spindle (201) and the fine adjustment knob (1).
  4. 4. The knob device with combination of coarse adjustment and fine adjustment according to claim 2, further comprising a fixed press sleeve (3), wherein the fixed press sleeve (3) is mounted on the mandrel (201), the fixed press sleeve (3) is located between the rear end cover (206) and the fine adjustment knob (1), and the fixed press sleeve (3) is connected with the fixed gear ring (4) and the coarse adjustment knob (5).
  5. 5. The knob device with combination of coarse adjustment and fine adjustment according to claim 1, further comprising an inner shaft system (7), wherein the inner shaft system (7) comprises a fourth bearing (703) and a fifth bearing (705), wherein inner rings of the fourth bearing (703) and the fifth bearing (705) are respectively mounted in a matched manner with the output shaft (701), and outer rings of the fourth bearing (703) and the fifth bearing (705) are respectively mounted in a matched manner with the coarse adjustment knob (5).
  6. 6. A knob assembly with a combination of coarse and fine adjustment according to claim 1, characterized in that the knob assembly further comprises an outer shaft system (6), the outer shaft system (6) comprising a stationary outer sleeve (601) and a third bearing (603), the inner ring of the third bearing (603) being mounted in cooperation with the coarse knob (5), the outer ring of the third bearing (603) being mounted in cooperation with the stationary outer sleeve (601).
  7. 7. A knob device with coarse and fine adjustment combination according to claim 1, characterized in that the output ring gear and the stationary ring gear (4) are coaxially arranged.
  8. 8. The knob device with coarse and fine adjustment combination according to claim 4, wherein the planetary gear train (2) further comprises a first bearing (203) and a second bearing (207), an inner ring of the first bearing (203) is mounted on one end of the spindle (201), an inner ring of the second bearing (207) is mounted on the other end of the spindle (201), an outer ring of the first bearing (203) is mounted in cooperation with the output shaft (701), and an outer ring of the second bearing (207) is mounted in cooperation with the fixed press sleeve (3).
  9. 9. A knob device with a combination of coarse and fine adjustment according to claim 8, characterized in that the knob device further comprises a bushing (8), the bushing (8) being mounted on the output shaft (701) and the bushing (8) being in contact with the first bearing (203).
  10. 10. A method for adjusting coarse and fine adjustment based on a knob device for coarse and fine adjustment according to any one of claims 1 to 9, comprising the steps of: Step S1, roughly adjusting the angular displacement, and rotating a rough adjusting hand button (5); Step S2, a coarse adjustment hand button (5) drives a fixed gear ring (4) to rotate; step S3, the fixed gear ring (4) drives the planet wheel (205) and the output gear ring to synchronously engage and drive around the center of the planetary gear system (2), so that rough adjustment of the angular displacement is realized; S4, fine adjustment of the angular displacement is carried out, and the fine adjustment hand button (1) is rotated; s5, driving the planetary gear system (2) to rotate by the fine adjustment knob (1); And S6, the planet wheel (205) rotates along the fixed gear ring (4) and the output gear ring, and the small-angle rotation is carried out on the output gear ring in the meshing transmission process of the planet wheel (205) due to the tooth difference between the fixed gear ring (4) and the output gear ring, so that the fine adjustment of the angular displacement is realized.

Description

Knob device and method combining coarse adjustment and fine adjustment Technical Field The invention relates to the technical field of positioning adjustment of precise instruments, in particular to a knob device and method for combining coarse adjustment and fine adjustment. Background Along with development of scientific technology, the problem of rapid and accurate positioning is becoming more and more important in the fields of machining, microscopic detection and the like, and particularly, the rapid and accurate positioning of the objective table in the machining workbench and the microscopic observation process can improve the efficiency and the accuracy in the machining and positioning processes, and can rapidly and accurately position the objective table to a target position in microscopic observation, so that the time of the microscopic observation process is saved, and the precise adjustment to a designated observation position is ensured. The traditional angular displacement adjusting device mainly comprises an electric motor and a manual motor, wherein the electric motor is mainly a servo motor, the stepping motor is controlled by a driver controller, even encoder semi-closed loop control and closed loop control are needed at a higher level, however, the electric device is very high in positioning precision and resolution, the cost price is very high, the number of attached electric control accessories is large, the circuit arrangement is redundant, the occupied space is large, and especially the use is seriously influenced in the face of a scene with limited use space and environment, the common manual adjustment is mainly unilateral speed reduction adjustment, the adjustment speed is slow, the efficiency is low, the adjustment precision is limited, and the use scene with higher precision is difficult to meet. Disclosure of Invention Therefore, the technical problem to be solved by the invention is to overcome the defects in the prior art, so as to provide a knob device and a method for combining coarse adjustment and fine adjustment. The knob device with the combination of coarse adjustment and fine adjustment comprises a fine adjustment knob and a coarse adjustment knob, wherein the fine adjustment knob and the coarse adjustment knob are coaxially arranged, a fixed gear ring is arranged on the coarse adjustment knob, the knob device further comprises a planetary gear train and an output shaft, the planetary gear train is connected with the fine adjustment knob, an output gear ring is arranged at one end, close to the fine adjustment knob, of the output shaft, the fixed gear ring and the output gear ring are in meshed transmission with a planet wheel on a planet wheel system, and tooth difference exists between the fixed gear ring and the output gear ring. Further, the planetary gear train also comprises a mandrel, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are both arranged on the mandrel, and the planetary gear is arranged between the front end cover and the rear end cover. Further, the knob device further comprises a connecting key and a second screw, the fine adjustment hand button is connected with the mandrel through the second screw, and the connecting key is arranged on the mandrel and the fine adjustment hand button. Further, the knob device further comprises a fixed pressing sleeve, the fixed pressing sleeve is arranged on the mandrel, the fixed pressing sleeve is positioned between the rear end cover and the fine tuning hand button, and the fixed pressing sleeve is connected with the fixed gear ring and the coarse tuning hand button. Further, the knob device further comprises an inner shaft system, the inner shaft system comprises a fourth bearing and a fifth bearing, inner rings of the fourth bearing and the fifth bearing are matched with the output shaft, and outer rings of the fourth bearing and the fifth bearing are matched with the coarse adjusting knob. Further, the knob device also comprises an outer shaft system, the outer shaft system comprises a fixed outer sleeve and a third bearing, an inner ring of the third bearing is matched with the coarse tuning knob, and an outer ring of the third bearing is matched with the fixed outer sleeve. Further, the output gear ring and the fixed gear ring are coaxially arranged. Further, the planetary gear train also comprises a first bearing and a second bearing, wherein an inner ring of the first bearing is arranged at one end of the mandrel, an inner ring of the second bearing is arranged at the other end of the mandrel, an outer ring of the first bearing is arranged in a matched mode with the output shaft, and an outer ring of the second bearing is arranged in a matched mode with the fixed press sleeve. Further, the knob device further includes a bushing mounted on the output shaft, and the bushing is in contact with the first bearing. The invention also comprises a coarse and fine combi