CN209811371U

CN209811371U - Double-lead-screw driving engraving machine

Info

Publication number: CN209811371U
Application number: CN201920747090.9U
Authority: CN
Inventors: 张永强
Original assignee: Dezhou Yudiao Mechanical Equipment Co Ltd
Current assignee: Dezhou Yudiao Mechanical Equipment Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2019-12-20
Anticipated expiration: 2029-05-22

Abstract

The utility model provides a double lead screw driven engraving machine, which comprises a workbench and a movable arm, wherein the movable arm is provided with a working head which can move in the X-axis direction and the Z-axis direction, and two sides of the movable arm are respectively provided with a group of lead screw driving mechanisms for realizing the movement of the movable arm in the Y-axis direction; the screw driving mechanism comprises a bearing seat, a motor support, a servo motor, a ball screw and a screw, wherein the bearing seat is connected with the movable arm and used for driving the movable arm to move, the ball screw is rotatably arranged in the bearing seat through a bearing, the motor support is fixedly connected with the bearing seat, the servo motor is arranged on the motor support and drives the ball screw to rotate through a transmission assembly, and two ends of the screw are fixed and are in threaded fit with the ball screw. This engraver drive adopts the double lead screw drive structure of Y axle direction, stability when can increasing the engraver motion improves the machining precision, and adopts special lead screw drive design structure, when the drive work piece removes, can reduce and generate heat, reduces inertia and noise reduction.

Description

Double-lead-screw driving engraving machine

Technical Field

The utility model relates to a relevant technical field of machining equipment specifically is a parallel feed screw drive engraver.

Background

The engraving machine is a machining device which is widely applied at present. The engraving machine structure with the traditional structure generally comprises a workbench and a movable arm, wherein the working head is arranged on the movable arm and can move along a Z axis and an X axis, and the movable arm is arranged on the workbench and can move along a Y axis.

In the existing structure, a driving structure for realizing the movement of the engraving machine in the Y-axis direction generally adopts a single-side design, the design structure is simple, the equipment cost can be saved, but in high-precision machining, because the single-side driving often causes uneven stress on the equipment when the equipment runs at high speed, the vibration is large, and the actual machining precision is influenced. And because the general engraver functioning speed is very fast, and Y axle direction stroke is great, considers the dead weight of ordinary ball screw itself, too big scheduling problem of lead screw inertia, its structural design is comparatively complicated, and the optional lead of standard type nut rotation type ball screw structure is few, and is with high costs, and this has all restricted the development of engraver technique.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model discloses combine prior art, set out from practical application, provide a double screw drive engraver, this engraver drive adopts the double screw drive structure of Y axle direction, and stability when can increasing the engraver motion improves the machining precision, and adopts special screw drive project organization, and when the drive work piece removed, can reduce and generate heat, reduces inertia and noise reduction.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a double lead screw driven engraving machine comprises a workbench and a movable arm, wherein the movable arm is provided with a working head which can move in the X-axis direction and the Z-axis direction, and two sides of the movable arm are respectively provided with a group of lead screw driving mechanisms for realizing the movement of the movable arm in the Y-axis direction; the screw driving mechanism comprises a bearing seat, a motor support, a servo motor, a ball screw and a screw, wherein the bearing seat is connected with the movable arm and used for driving the movable arm to move, the ball screw is rotatably installed in the bearing seat through a bearing, the motor support is fixedly connected with the bearing seat, the servo motor is installed on the motor support and driven through a transmission assembly, the ball screw rotates, and two ends of the screw are fixed and are in threaded fit with the ball screw.

Further, transmission assembly is the belt drive structure, and it includes the action wheel, follows the driving wheel, servo motor is connected to the action wheel, follow the coaxial fixed connection of driving wheel and ball screw, be equipped with the through-hole that supplies the lead screw to pass from the driving wheel centre, the action wheel with from connecting through the hold-in range between the driving wheel.

Further, the ball screw includes flange portion and connecting shaft portion, and its flange portion is used for with follow driving wheel fixed connection, and its connecting shaft portion is used for cooperating with the bearing.

Furthermore, a synchronizing wheel fixing pad is arranged between a flange part of the ball screw and the bearing, the synchronizing wheel fixing pad, the flange part and the driven wheel are fixedly connected, and a limiting table used for pressing an inner ring of the bearing is arranged on one side, close to the bearing, of the synchronizing wheel fixing pad.

Furthermore, a bearing retainer ring and a bearing pressing ring which are sleeved on the connecting shaft portion are arranged on the outer side of the bearing, and a limiting table used for pressing the inner ring of the bearing is arranged on one side, close to the bearing, of the bearing retainer ring.

Furthermore, one side of the inside of the bearing seat is provided with a limiting table for compressing the outer ring of the bearing, a bearing gland is installed on the outer side of the bearing seat, and one side of the bearing gland, which is close to the bearing, is provided with a limiting table for compressing the outer ring of the bearing.

The utility model has the advantages that:

1. the utility model can ensure the stability of the engraving machine in the large-stroke rapid movement process by arranging a group of lead screw driving mechanisms on both sides of the Y-axis movement direction of the engraving machine, so as to improve the processing precision of the engraving machine; simultaneously the utility model provides an among the drive structure, with synchronizing wheel and ball screw lug connection, ball screw body lug connection bearing to realize the motion of synchronizing wheel lug drive ball screw, when the drive work piece removed, conveniently had good performance reducing generating heat, reducing inertia, reducing the noise etc. especially in the aspect of feed speed, the effect is more obvious.

2. The utility model discloses a drive structure, greatly reduced the design degree of difficulty, reduced the size of lead screw nut seat for the assembly becomes more simple and easy, and is stable good, noise and vibration are low in the motion process simultaneously.

3. The utility model discloses a drive structure, multiple brand polytype ball screw on can the compatible market, the structural design of the engraver of can being convenient for reduces processing manufacturing cost.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view I of a screw driving mechanism of the present invention;

FIG. 3 is a schematic view of a second screw driving mechanism of the present invention;

FIG. 4 is a schematic diagram of the screw driving mechanism of the present invention in a partially disassembled state;

fig. 5 is a schematic sectional view of the present invention.

Reference numerals shown in the drawings:

1. a work table; 2. a lead screw drive mechanism; 3. a working head; 4. a lead screw; 5. a servo motor; 6. a motor bracket; 7. a driving wheel; 8. a synchronous belt; 9. a driven wheel; 10. a bearing seat; 11. a bearing gland; 12. a bearing compression ring; 13. a bearing retainer ring; 14. a bearing; 15. a ball screw nut; 16. a synchronizing wheel fixing pad; 17. a movable arm.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

As shown in fig. 1, for the utility model provides a pair of two lead screw drive engravers structure charts, it mainly includes workstation 1, digging arm 17, and digging arm 17 spanes workstation 1 and sets up, is equipped with working head 3 that can move about at X axle direction and Z axle direction on the digging arm 17 the utility model discloses a digging arm 17 both sides are equipped with a set of lead screw actuating mechanism 2 respectively, and digging arm 17 cooperates the motion of realizing Y axle direction through this lead screw actuating mechanism 2 and workstation 1. Through set up a set of lead screw actuating mechanism 2 respectively in engraver both sides, can guarantee the steady operation of engraver in the Y axle direction, vibrations when reducing the operation improve the machining precision.

As shown in fig. 2-5, the screw driving mechanism of the present invention includes a bearing seat 10, a motor bracket 6, a servo motor 5, a ball screw 15, and a screw 4, wherein the bearing seat 10 is connected to a movable arm 17 through a screw for driving the movable arm 17 to move. An angular contact bearing 14 is arranged in the bearing seat 10, a ball screw 15 is arranged in the angular contact bearing 14, the motor support 6 is fixedly connected with the bearing seat 10 through a screw, the servo motor 5 is installed on the motor support 6 and drives the ball screw 15 to rotate through a transmission assembly, and two ends of the screw rod 4 are fixed on the workbench 1 and are in threaded fit with the ball screw 15. In this structure, when servo motor 5 rotated, with power transmission to ball screw 15, ball screw 15 can carry out linear motion along lead screw 4 when rotating to drive the motion of digging arm 17. The utility model discloses a linear motion of lead screw nut structure is realized to ball screw 15 pivoted mode, is favorable to the control of 17Y axle direction long distance motions of digging arm, reduces inertia and noise and vibration.

As preferred the utility model discloses in, the drive assembly who uses is the belt drive structure, and it includes action wheel 7, follows driving wheel 9, and wherein servo motor 5 is connected to action wheel 7, follows driving wheel 9 and the coaxial fixed connection of ball screw 15, is equipped with the through-hole that supplies lead screw 4 to pass from the centre of driving wheel 7, and lead screw 4 passes this through-hole and ball screw 15 screw-thread fit, action wheel 7 and connect through hold-in range 8 from between the driving wheel 9.

Preferably, in the present invention, the ball screw includes a flange portion and a connecting shaft portion, the flange portion is used for being fixedly connected with the driven wheel 9, and the connecting shaft portion is used for being matched with the bearing 14. Specifically, a synchronizing wheel fixing pad 16 is arranged between a flange portion of a ball screw 15 and a bearing 14, a plurality of mounting holes are formed in the circumferential direction of the synchronizing wheel fixing pad 16, the flange portion and the driven wheel 9, the synchronizing wheel fixing pad 16, the flange portion and the driven wheel 9 are fixedly connected through screws screwed in the mounting holes, a limiting table used for pressing an inner ring of the bearing 14 is arranged on one side, close to the bearing 14, of the synchronizing wheel fixing pad 16, and the limiting table can limit the bearing 14 to move towards the direction close to the driven wheel 9. And a bearing retainer ring 13 and a bearing pressing ring 12 which are sleeved on the connecting shaft part are arranged on the other side of the bearing 14, a limiting table for pressing an inner ring of the bearing 14 is arranged on one side, close to the bearing 14, of the bearing retainer ring 13, the bearing pressing ring 12 can be locked on the connecting shaft part, and the inner ring of the bearing 14 is pressed through the bearing retainer ring 13 to limit the axial movement of the bearing in the direction far away from the driven wheel 9.

Preferably, the utility model discloses a compact structure for bearing 14 outer lane is as follows: a limiting table used for compressing the outer ring of the bearing 14 is arranged on one side inside the bearing seat 10, a bearing gland 11 is fastened on the outer side of the bearing seat 10 through screws, and the limiting table used for compressing the outer ring of the bearing 14 is arranged on one side, close to the bearing 14, of the bearing gland 11. The bidirectional compression of the bearing outer ring is realized through the inner structure of the bearing seat 10 and the bearing gland 11.

The utility model discloses an equipment mode: the method comprises the steps of combining a ball screw nut 15, a synchronizing wheel fixing pad 16 and a driven wheel 9 through screws, installing the ball screw nut 15 in a bearing seat 10 through a bearing 14, fixing a bearing pressing ring 12 on a connecting shaft part of the ball screw nut 15, pressing a bearing retainer ring 13, the bearing 14 and the synchronizing wheel fixing pad 16, installing a bearing pressing cover 11, and pressing an outer ring of the bearing 14. This structural design is simple, and easily assembly produces the vibration when can avoiding ball screw 15 to rotate, and this structure is applicable to the lead screw nut structure commonly used on the market simultaneously, and the commonality is extremely strong.

Claims

1. The utility model provides a parallel feed screw drive engraver, includes workstation, digging arm, be equipped with the working head that can move about in X axle direction and Z axle direction on the digging arm, its characterized in that:

a group of screw rod driving mechanisms are respectively arranged on two sides of the movable arm and used for realizing the movement of the movable arm in the Y-axis direction;

the screw driving mechanism comprises a bearing seat, a motor support, a servo motor, a ball screw and a screw, wherein the bearing seat is connected with the movable arm and used for driving the movable arm to move, the ball screw is rotatably installed in the bearing seat through a bearing, the motor support is fixedly connected with the bearing seat, the servo motor is installed on the motor support and driven through a transmission assembly, the ball screw rotates, and two ends of the screw are fixed and are in threaded fit with the ball screw.

2. The double-screw-drive engraving machine according to claim 1, characterized in that: the transmission assembly is a belt transmission structure and comprises a driving wheel and a driven wheel, the driving wheel is connected with a servo motor, the driven wheel is fixedly connected with a ball screw in a coaxial mode, a through hole for a screw to penetrate through is formed in the middle of the driven wheel, and the driving wheel is connected with the driven wheel through a synchronous belt.

3. The double-screw-drive engraving machine according to claim 2, characterized in that: the ball screw comprises a flange part and a connecting shaft part, wherein the flange part is fixedly connected with the driven wheel, and the connecting shaft part is matched with the bearing.

4. A double screw driven engraving machine as claimed in claim 3, characterized in that: a synchronizing wheel fixing pad is arranged between a flange part of the ball screw and the bearing, the synchronizing wheel fixing pad, the flange part and the driven wheel are fixedly connected, and a limiting table used for pressing an inner ring of the bearing is arranged on one side, close to the bearing, of the synchronizing wheel fixing pad.

5. The double-screw-drive engraving machine according to claim 4, characterized in that: the bearing outer side is provided with a bearing retainer ring and a bearing pressing ring which are sleeved on the connecting shaft part, and one side of the bearing retainer ring close to the bearing is provided with a limiting table used for pressing the bearing inner ring.

6. The double-screw-drive engraving machine according to claim 1, characterized in that: the bearing comprises a bearing seat and is characterized in that a limiting table used for compressing an outer ring of a bearing is arranged on one side inside the bearing seat, a bearing gland is installed on the outer side of the bearing seat, and a limiting table used for compressing the outer ring of the bearing is arranged on one side, close to the bearing, of the bearing gland.