Motor gear rack gap adjusting device
By designing a motor gear rack gap adjustment device and using components such as motors, reducers and screws to achieve flexible adjustment of gears and racks, the problem of the existing technology that the meshing degree of gears and racks depends on machining accuracy is solved, and precise meshing adjustment is achieved.
Patent Information
- Application Number
- CN202521790385.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2035-08-22
AI Technical Summary
In the prior art, the meshing degree between the gear and the rack can only be guaranteed by machining accuracy, which has errors and cannot be flexibly adjusted.
A motor gear rack gap adjustment device is designed. By setting components such as a motor, a reducer and screws on the gear gap adjustment plate, flexible adjustment of the gear and rack is achieved, and precise movement and positioning are achieved by the cooperation of screws and guide pins.
The flexible meshing adjustment of the gear and the rack is realized, the deficiency of reliance on machining accuracy is overcome, the structure is simple, and there is no need to significantly adjust the existing equipment.
Smart Images
Figure CN223399210U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gap adjustment, in particular to a motor gear rack gap adjustment device. Background Art
[0002] During the machining process, a machine tool requires the movement of a gantry. The mechanism driving the gantry's movement typically consists of a servo motor and gears located beneath the gantry. These gears mesh with the machine tool's rack, driving the gantry's movement. Existing techniques typically rely solely on machining accuracy to ensure the meshing between the gear and rack. This requires the gear and rack to be machined within tolerances, which creates the potential for error and prevents flexible adjustment of the meshing between the gear and rack.
[0003] Therefore, the utility model provides a motor gear rack gap adjustment device to solve the above problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a motor gear rack clearance adjustment device to solve the above problems.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a motor gear rack gap adjustment device, comprising a base fixedly connected to the bottom end of a column, an adjustment mechanism provided on the base, and a slider fixedly connected to the bottom end of the base;
[0006] The adjustment mechanism includes a gear gap adjustment plate, a gear hole is provided at the center position of the gear gap adjustment plate, a plurality of motor mounting holes distributed along the circumferential direction are provided around the gear hole, guide holes are provided on both sides of the gear gap adjustment plate, the guide holes are long strips, the two guide holes are symmetrically distributed, and are both located on the center line of the gear gap adjustment plate, the center line of the gear gap adjustment plate is perpendicular to the length direction of the rack engaged with the gear, the four corner positions of the gear gap adjustment plate are respectively provided with mounting adjustment holes, four gear gap adjustment holes are provided on the side wall of the gear gap adjustment plate, the four corner positions of the gear gap adjustment plate are respectively provided with positioning holes, and the internal threaded conical pins are fixed in the positioning holes.
[0007] Preferably, a motor is provided on the tooth gap adjustment plate, a reducer is provided at the output end of the motor, a gear is provided at the output end of the reducer, the gear extends to the lower part of the base, the slider is installed on the machine tool guide rail, and the gear is engaged with the rack of the machine tool.
[0008] Preferably, the installation adjustment hole is in the shape of an elongated strip, and the length direction of the installation adjustment hole is perpendicular to the length direction of the rack with which the gear is meshed.
[0009] Preferably, the tooth clearance adjustment hole is communicated with the mounting adjustment hole, and the axis of the tooth clearance adjustment hole is perpendicular to the length direction of the rack engaged with the gear.
[0010] Preferably, a first screw is provided on the reducer, and the first screw is installed in the motor mounting hole. Four second screws are provided on the tooth gap adjustment plate, and the second screws pass through the mounting adjustment hole and the mounting fixing hole in sequence. Two guide pins are provided on the tooth gap adjustment plate, and the guide pins pass through the guide hole and the motor mounting hole in sequence.
[0011] Preferably, two third screws are installed on one side of the tooth gap adjustment plate, and the third screws are installed in two corresponding tooth gap adjustment holes. The third screws are located on the side close to the rack.
[0012] Beneficial effects
[0013] The utility model provides a motor gear rack gap adjustment device. Compared with the existing technology, it has the following advantages:
[0014] (1) A motor gear rack clearance adjustment device can perform flexible adjustment when the gear and rack of a machine tool are engaged. It can overcome the problem that the existing technology can only rely on the accuracy of machining to ensure the meshing degree of the gear and rack. It does not require major adjustments to the existing equipment. The gear and rack can be adjusted by machining corresponding adjustment holes in the existing equipment and using screws in existing parts. The structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a side view of the overall device structure of the utility model;
[0016] Figure 2 This is a side view of the column structure of the utility model;
[0017] Figure 3 This is a side view of the bottom structure of the adjustment mechanism of the utility model;
[0018] Figure 4 This is a side view of the adjustment mechanism structure of the utility model;
[0019] Figure 5 It is a side view of the tooth gap adjustment plate structure of the present utility model.
[0020] In the figure, 1 is the column; 2 is the slider; 3 is the base; 4 is the motor; 5 is the reducer; 6 is the gear;
[0021] Adjustment mechanism: 71, tooth gap adjustment plate; 72, gear hole; 73, installation adjustment hole; 74, tooth gap adjustment hole; 75, motor installation hole; 76, guide hole; 77, positioning hole; 78, first screw; 79, second screw; 791, third screw; 792, installation fixing hole. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] Example 1:
[0024] See also Figure 1-5 , a motor gear rack gap adjustment device, comprising a base 3 fixedly connected to the bottom end of a column 1, an adjustment mechanism is provided on the base 3, and a slider 2 is fixedly connected to the bottom end of the base 3;
[0025] The adjustment mechanism includes a gear hole 72 provided at the center of the gear hole 71, and a number of motor mounting holes 75 distributed along the circumferential direction are provided around the gear hole 72. Guide holes 76 are provided on both sides of the gear adjustment plate 71. The guide holes 76 are long strips. The two guide holes 76 are symmetrically distributed and are both located on the center line of the gear adjustment plate 71. The center line of the gear adjustment plate 71 is perpendicular to the length direction of the rack with which the gear meshes. The four corners of the gear adjustment plate 71 are respectively provided with mounting adjustment holes 73, and the side wall of the gear adjustment plate 71 is provided with four gear adjustment holes 74. The four corners of the gear adjustment plate 71 are respectively provided with positioning holes 77, and the internal threaded conical pins are fixed in the positioning holes 77.
[0026] A motor 4 is provided on the tooth gap adjustment plate 71, a reducer 5 is provided at the output end of the motor 4, a gear 6 is provided at the output end of the reducer 5, the gear 6 extends to the lower part of the base 3, the slider 2 is installed on the machine tool guide rail, and the gear 6 is engaged with the rack of the machine tool.
[0027] The installation adjustment hole 73 is in an elongated strip shape, and the length direction of the installation adjustment hole 73 is perpendicular to the length direction of the rack engaged with the gear 6 .
[0028] The backlash adjustment hole 74 is connected to the mounting adjustment hole 73 , and the axis of the backlash adjustment hole 74 is perpendicular to the length direction of the rack meshed with the gear 6 .
[0029] A first screw 78 is provided on the reducer 5, and the first screw 78 is installed in the motor mounting hole 75. Four second screws 79 are provided on the tooth gap adjustment plate 71, and the second screws 79 pass through the mounting adjustment hole 73 and the mounting fixing hole 792 in sequence. Two guide pins are provided on the tooth gap adjustment plate 71, and the guide pins pass through the guide hole 76 and the motor mounting hole 75 in sequence.
[0030] Two third screws 791 are installed on one side of the backlash adjustment plate 71 . The third screws 791 are installed in two corresponding backlash adjustment holes 74 . The third screws 791 are located on a side close to the rack.
[0031] Working process:
[0032] When there is a certain gap between gear 6 and the rack:
[0033] When the third screw 791 is tightened, the third screw 791 will press against the second screw 79 during the process of rotation and tightening. Since the lower part of the second screw 79 is fixed in the mounting hole 792, the second screw 79 cannot move. When the third screw 791 is further tightened, the tooth gap adjustment plate 71 will gradually move in the direction of the third screw 791 and drive the gear 6 to move in the direction of the rack to eliminate the gap between the gear 6 and the rack. When the gear 6 is engaged with the rack, the tightening of the third screw 791 can be stopped, thereby completing the flexible adjustment of the gear 6 and the rack. In the process of the tooth gap adjustment plate 71 moving toward the rack, since the guide pin is fixedly installed on the base 3, the guide pin can guide the tooth gap adjustment plate 71 to avoid angular deviation.
[0034] After adjusting the meshing between gear 6 and the rack:
[0035] Because the gear 6 and the rack are rigidly transmitted and there can be no gap, the two internally threaded conical pins are respectively installed in the two positioning holes 77. After adjusting the tooth gap, the tooth gap adjustment plate 71 is positioned on the base 3 to prevent loosening. The internally threaded conical pins are easy to install, have good self-locking properties, and are easy to disassemble. The two internally threaded conical pins are distributed diagonally. When in use, internally threaded conical pins can also be installed in all four 77.
[0036] By starting the motor 4, the gear 6 is driven to rotate through the reducer 5, so that the gear 6 moves along the rack of the machine tool, and the column 1 can move horizontally on the machine tool along the guide rail of the machine tool.
[0037] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A motor gear rack gap adjustment device, characterized in that: It comprises a base (3) fixedly connected to the bottom end of the column (1), an adjustment mechanism is provided on the base (3), and a slider (2) is fixedly connected to the bottom end of the base (3); The adjustment mechanism includes a backlash adjustment plate (71) and an internally threaded conical pin. A gear hole (72) is provided at the center of the backlash adjustment plate (71). A plurality of motor mounting holes (75) distributed along the circumferential direction are provided around the gear hole (72). Guide holes (76) are provided on both sides of the backlash adjustment plate (71). The guide holes (76) are long strips. The two guide holes (76) are symmetrically distributed and are both located on the center line of the backlash adjustment plate (71). The center line of the backlash adjustment plate (71) is perpendicular to the length direction of the rack engaged with the gear. Mounting adjustment holes (73) are respectively provided at the four corners of the backlash adjustment plate (71). Four backlash adjustment holes (74) are provided on the side wall of the backlash adjustment plate (71). Positioning holes (77) are respectively provided at the four corners of the backlash adjustment plate (71). The internally threaded conical pin is fixed in the positioning hole (77).
2. The motor gear rack gap adjustment device according to claim 1, characterized in that: A motor (4) is provided on the tooth gap adjustment plate (71), a reducer (5) is provided at the output end of the motor (4), a gear (6) is provided at the output end of the reducer (5), the gear (6) extends to the lower part of the base (3), the slider (2) is mounted on a machine tool guide rail, and the gear (6) is meshed with a rack of the machine tool.
3. The motor gear rack gap adjustment device according to claim 1, characterized in that: The installation adjustment hole (73) is in the shape of an elongated strip, and the length direction of the installation adjustment hole (73) is perpendicular to the length direction of the rack engaged with the gear (6).
4. The motor gear rack gap adjustment device according to claim 2, characterized in that: The tooth gap adjustment hole (74) is connected to the installation adjustment hole (73), and the axis of the tooth gap adjustment hole (74) is perpendicular to the length direction of the rack engaged with the gear (6).
5. The motor gear rack gap adjustment device according to claim 4, characterized in that: The reducer (5) is provided with a first screw (78), which is installed in the motor mounting hole (75); the tooth gap adjustment plate (71) is provided with four second screws (79), which pass through the mounting adjustment hole (73) and the mounting fixing hole (792) in sequence; the tooth gap adjustment plate (71) is provided with two guide pins, which pass through the guide hole (76) and the motor mounting hole (75) in sequence.
6. The motor gear rack gap adjustment device according to claim 5, characterized in that: Two third screws (791) are installed on one side of the tooth gap adjustment plate (71), and the third screws (791) are installed in two corresponding tooth gap adjustment holes (74). The third screws (791) are located on a side close to the rack.