Working method of a single-axis linear drive linear-rotary compound feed motion device

Abstract

The present application discloses a linear-rotation compound feed motion device with a single-axis linear drive, comprising a base, two first guide rails provided on the base, a plurality of movable guide rail sliders provided on the first guide rails, a moving seat mounted on the guide rail sliders of the two first guide rails; a screw transmission assembly in the same direction provided on the base between the two first guide rails; a rack seat with a second guide rail provided on the side of the base, a movable rack provided on the rack seat; a rotating shaft with a rolling bearing provided on the axial center hole of the moving seat, a gear provided at one end of the rotating shaft, a support platform provided at the other end, the gear and the rack meshing; a stopper and a spring seat provided at each end of the rack seat, a compression spring partially extending out of the spring seat provided on the spring seat, the extended end of the compression spring contacting the end of the rack; an adjustable push block provided on the moving seat; the screw transmission assembly is fixedly connected to the base and the moving seat. This device has stable linear and rotational motion and high guiding precision. When retracting, the support platform and the workpiece can move in reverse in sequence back to the initial position and horizontal state.

Description

Technical Field

[0001] The invention relates to a feeding motion device, in particular to a working method of a linear-rotational composite feeding motion device driven by a single axis linearly. Background Art

[0002] The mechanical manufacturing industry is widely involved in the machining of mechanical parts. During machining, the workpiece requires various adjustments and feed motions, such as linear, rotary, or combined linear-rotary motion. For example, in this machining application, the workpiece must start from a horizontal position and undergo simultaneous rotational adjustment while performing linear feed motion. After reaching a certain angular position, the workpiece is locked and continues to feed an appropriate distance. Upon retraction, the workpiece then reverses direction and returns to its initial position and horizontal state. This automatic feed motion is typically performed using two separate drive mechanisms, which is costly. Alternatively, a single rotary drive mechanism and cam combination control mechanism are difficult to achieve, or the mechanism is complex and inconvenient to adjust. Because these machining applications require specific motion within a specific travel range, primarily linear feed motion with supplementary angular adjustment, and require high guidance accuracy and drive stability, it would be beneficial to develop a single-axis linear drive that achieves the specific linear-rotary combined motion, with high feed stability and guidance accuracy, rather than the costly solution of using two separate drive mechanisms to perform the motion functions. Summary of the Invention

[0003] The present invention addresses the shortcomings of the prior art by providing a single-axis linear-drive linear-rotary composite feed motion device. This device utilizes a linear drive to drive a workpiece for linear feed motion, while simultaneously driving the workpiece for rotational motion from a horizontal position to achieve angular adjustment. Once the angle is adjusted, the angular position is locked and the linear feed motion continues to the specified position. Combined with the machining motion of the main machining center, this device enables machining of the workpiece at a specific angle. Simultaneously, the linear and rotational motions are smooth, with high guiding precision. During retraction, the workpiece can be reversed to its initial position and then to a horizontal position.

[0004] The technical solution for achieving the purpose of the present invention is:

[0005] A single-axis linearly driven linear-rotary compound feed motion device comprises a base, two first guide rails are provided on the base, a plurality of movable guide rail sliders are provided on the first guide rails, and a moving seat is mounted on the guide rail sliders of the two first guide rails; a screw transmission assembly in the same direction as the first guide rails is provided on the base between the two first guide rails; a rack seat with a second guide rail is also provided on the side of the base, and a movable rack is provided on the rack seat; a rotating shaft with a rolling bearing is provided on the axial center hole of the moving seat, a gear is provided at one end of the rotating shaft, and a support platform is provided at the other end, and the gear is meshed with the rack; a stop block and a spring seat are respectively provided at both ends of the rack seat, and a compression spring partially extending out of the spring seat is provided on the spring seat, and the extended end of the compression spring contacts the end of the rack; an adjustable pushing block is provided on the moving seat; the screw transmission assembly is fixedly connected to the base and the moving seat.

[0006] The top of the stopper is higher than the top of the rack seat, and the stopper is used to prevent the rack from moving out of the rack seat.

[0007] An upward extending block which can be used to block the pushing block is provided at the end of the rack close to the compression spring, and the blocking block contacts the end of the rack away from the rack extending block.

[0008] The supports at both ends of the screw transmission assembly are fixedly connected to the base, and the nut seat of the screw transmission assembly is fixedly connected to the moving seat.

[0009] The rack and the rack seat are movably connected via a second guide rail.

[0010] In the initial state of the movable seat, a distance is provided between the pushing block and the rack extension block.

[0011] The screw transmission assembly includes a screw with a motor, both ends of the screw are supported on two supports fixed to the base through bearings, the screw nut is fixedly installed in the hole of the nut seat, and the nut seat is fixedly connected to the movable seat.

[0012] The supporting platform is used for placing the workpiece to be processed.

[0013] The motor of the screw transmission assembly is externally connected to a control system.

[0014] A method for operating a single-axis linearly driven linear-rotary compound feed motion device includes the above-mentioned single-axis linearly driven linear-rotary compound feed motion device, and the method comprises the following steps:

[0015] (1) Under the control of the control system, the motor drives the screw transmission assembly to operate, driving the moving seat to move linearly from the initial position on the base through the guide slider and the first guide rail;

[0016] (2) When the moving seat moves, due to the meshing of the gear and the rack, and the rack being fixed in the rack seat under the action of the compression spring, the driving gear drives the rotating shaft to rotate, thereby driving the support table and the workpiece to rotate, realizing the workpiece angle adjustment movement;

[0017] (3) When the moving seat moves to a certain position, and the workpiece rotates to a specified angle position, the moving seat drives the push block to hit the extension block of the rack; when the moving seat continues to move, the push block pushes the rack to move synchronously with the moving seat, and the support table and the workpiece stop rotating, realizing angle locking; since the position of the push block in the moving seat can be adjusted, the final angle can be adjusted;

[0018] (4) When the workpiece is being processed, even if there is a processing force, the rack and the movable seat are firmly locked together due to the sufficient compression resistance of the compression spring and the limiting effect of the push block. The further the movable seat moves forward, the greater the locking effect, thereby achieving the stability of the support table and the workpiece at this angle state;

[0019] (5) After the workpiece is processed, the control system controls the motor to drive the screw transmission assembly to move in the reverse direction. By driving in the reverse direction, each moving component moves in the reverse direction in turn and returns to its initial state.

[0020] This device can drive the workpiece to make linear feed motion through linear drive, and at the same time drive the workpiece to make rotational motion from a horizontal position to achieve angle adjustment. After the angle is adjusted, the angle position is locked and the linear feed motion continues to the specified position. Combined with the processing motion of the processing host, the processing of the workpiece at a specific angle state is achieved. At the same time, the linear and rotational motions are smooth and the guiding accuracy is high. When returning, it can move in reverse to the initial position and horizontal state in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front cross-sectional view of an embodiment;

[0022] Figure 2 for Figure 1 AA cross-sectional view;

[0023] Figure 3 for Figure 1 BB cross-sectional view;

[0024] Figure 4 for Figure 1 Right view of .

[0025] In the figure: 1. base; 2. rack seat; 201. second guide rail; 3. rack; 301. extension block; 4. gear; 5. moving seat; 6. rotating shaft; 7. support table; 8. workpiece; 9. screw transmission assembly; 10. guide rail slider; 11. first guide rail; 12. motor; 13. spring seat; 14. compression spring; 15. push block; 16. stop block; 17. processing host. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto. Example

[0027] Reference Figures 1 to 4 A single-axis linear drive linear-rotary compound feed motion device includes a base 1, two first guide rails 11 are provided on the base 1, and a plurality of movable guide rail sliders 10 are provided on the first guide rails 11. A movable seat 5 is mounted on the guide rail sliders 10 of the two first guide rails 11; a screw transmission component 9 in the same direction as the first guide rail 11 is provided on the base 1 between the two first guide rails 11; a rack seat 2 with a second guide rail 201 is provided on the side of the base 1, and a movable rack seat 2 is provided on the rack seat 2. Rack 3; a rotating shaft 6 with a rolling bearing is provided on the axial center hole of the movable seat 5, a gear 4 is provided at one end of the rotating shaft 6, and a support platform 7 is provided at the other end, and the gear 4 is engaged with the rack 3; a stopper 16 and a spring seat 13 are respectively provided at both ends of the rack seat 2, and a compression spring 14 is provided on the spring seat 13 which partially extends out of the spring seat 13, and the extended end of the compression spring 14 contacts the end of the rack 3; an adjustable pushing block 15 is provided on the movable seat 5; a screw drive assembly 9 is fixedly connected to the base 1 and the movable seat 5.

[0028] The top of the stopper 16 is higher than the top of the rack seat 2 , and the stopper 16 is used to prevent the end of the rack 3 from moving out of the rack seat 2 .

[0029] The end of the rack 3 close to the compression spring 14 is provided with an upward extension block 301 for blocking the push block 15, and the block contacts the end of the rack away from the rack extension block.

[0030] The supports at both ends of the screw transmission assembly 9 are fixedly connected to the base 1 , and the nut seat of the screw transmission assembly 9 is fixedly connected to the movable seat 5 .

[0031] The rack 3 and the rack seat 2 are movably connected via a second guide rail 201 .

[0032] In the initial state of the movable base 5 , a distance is provided between the pushing block 15 and the rack extension block 301 .

[0033] The screw transmission assembly 9 includes a screw with a motor, and the two ends of the screw are supported on two supports fixed to the base 1 through bearings. The screw nut is fixedly installed in the hole of the nut seat, and the nut seat is fixedly connected to the movable seat 5. In this example, the screw transmission assembly 9 is a conventional device.

[0034] The support table 7 is used to place a workpiece 8 to be processed.

[0035] The motor 12 of the screw transmission assembly 9 is externally connected to a control system.

[0036] A method for operating a single-axis linearly driven linear-rotary compound feed motion device includes the above-mentioned single-axis linearly driven linear-rotary compound feed motion device, and the method comprises the following steps:

[0037] (1) Under the control of the control system, the motor 12 drives the screw transmission assembly 9 to operate, driving the movable seat 5 to move linearly from the initial position on the base 1 through the guide rail slider 10 and the first guide rail 11;

[0038] (2) When the movable seat 5 moves, due to the meshing action of the gear 4 and the rack 3, and the fact that the rack 3 is fixed in the rack seat 2 under the action of the compression spring 14, the driving gear 4 drives the rotating shaft 6 to rotate, thereby driving the supporting platform 7 and the workpiece 8 to rotate, thereby realizing the angle adjustment movement of the workpiece 8;

[0039] (3) When the movable seat 5 moves to a certain position, thereby rotating the workpiece 8 to a specified angle, the movable seat 5 drives the push block 15 to hit the extension block 301 of the rack 3; when the movable seat 5 continues to move, the push block 15 pushes the rack 3 and the movable seat 5 to move synchronously, and the rotation of the support table 7 together with the workpiece 8 stops, thus achieving angle locking; since the position of the push block 15 in the movable seat 5 can be adjusted, the final angle can be adjusted;

[0040] (4) When the workpiece 8 is being processed, even if there is a processing force, the rack 4 and the movable seat 5 are firmly locked together due to the sufficient compression resistance of the compression spring 14 and the limiting effect of the push block 15. The further the movable seat 5 moves forward, the greater the locking effect, thereby achieving the stability of the support platform 7 and the workpiece 8 at this angle state;

[0041] (5) After the workpiece 8 is processed, the control system controls the motor 12 to drive the screw transmission assembly 9 to move in the reverse direction. By driving in the reverse direction, each moving component moves in the reverse direction in turn to return to the initial state.

Claims

1. A linear-rotary compound feed motion device with a single-axis linear drive, characterized in that: The cam is equipped with a gear train that is adapted to move the gear train to the front of the gear train and to move the gear train to the front of the gear train, and the cam is equipped with a gear train that is adapted to move the gear train to the front of the gear train.

2. The linear-rotary compound feed motion device with a single-axis linear drive according to claim 1, characterized in that: The top of the stopper is higher than the top of the rack seat.

3. The linear-rotary compound feed motion device with a single-axis linear drive according to claim 1, characterized in that: The screw transmission assembly includes a screw with a motor, both ends of the screw are supported on two supports fixed to the base through bearings, the screw nut is fixedly installed in the hole of the nut seat, and the nut seat is connected to the movable seat.

4. The single-axis linear drive linear-rotary compound feed motion device according to claim 1, characterized in that: The rack and the rack seat are movably connected via a second guide rail.

5. A method for operating a linear-rotary compound feed motion device with a single-axis linear drive, characterized in that: The single-axis linear drive linear-rotary compound feed motion device according to any one of claims 1 to 4, wherein the working method comprises the following steps: (1) Under the control of the control system, the motor drives the screw transmission assembly to operate, driving the moving seat to move linearly from the initial position on the base through the guide slider and the first guide rail; (2) When the moving seat moves, due to the meshing of the gear and the rack, and the rack being fixed in the rack seat under the action of the compression spring, the driving gear drives the rotating shaft to rotate, thereby driving the support table and the workpiece to rotate, realizing the workpiece angle adjustment movement; (3) When the moving seat moves to a certain position, and the workpiece rotates to a specified angle position, the moving seat drives the push block to hit the extension block of the rack; when the moving seat continues to move, the push block pushes the rack to move synchronously with the moving seat, and the support table and the workpiece stop rotating, realizing angle locking; since the position of the push block in the moving seat can be adjusted, the final angle can be adjusted; (4) When the workpiece is being processed, even if there is a processing force, the rack and the movable seat are firmly locked together due to the sufficient compression resistance of the compression spring and the limiting effect of the push block. The further the movable seat moves forward, the greater the locking effect, thereby achieving the stability of the support table and the workpiece at this angle state; (5) After the workpiece is processed, the control system controls the motor to drive the screw transmission assembly to move in the reverse direction. By driving in the reverse direction, each moving component moves in the reverse direction in turn and returns to its initial state.

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