CN106736633A - A kind of servo mobile work platform - Google Patents

Abstract

The invention discloses a servo mobile workbench, which comprises a servo motor, a planetary reducer, a transition box, a rear bracket, a lock nut, an intermediate sleeve, a deep groove ball bearing, a spacer sleeve, a thrust ball bearing, a flange, and a buffer pad , ball screw pair, screw auxiliary support, cover plate, shaft retaining ring, front bracket, worktable body, base, pressure plate, protective cover, protective cover bracket, large synchronous pulley, large expansion sleeve, synchronous belt, Small expansion sleeve, small synchronous pulley and adjustment block. The servo mobile worktable cancels the original worm gear reduction and gear reduction transmission structure, and uses a servo motor to drive the planetary reducer to drive the ball screw pair to rotate through the synchronous belt transmission, and then transmits the power to the worktable body through the screw sub-support , so that the table body moves along the axial direction. On the one hand, the mobile workbench simplifies the structure of the transmission device and saves the occupied space of the transmission device; on the other hand, it saves the manufacturing cost and improves the positioning accuracy.

Description

A servo mobile workbench

technical field

The invention belongs to the field of machine tools, and in particular relates to a servo mobile workbench.

Background technique

Machine tools play an important role in the modernization of the national economy. In China, our country's machine tools and their automatic lines process and produce larger batches of box and shaft parts are their main tasks. In the past few decades, the machinery manufacturing industry has developed from the competition of reducing product costs to the competition of new products today. Since we joined the WTO and the trend of economic globalization, my country's machine tool industry has also followed the world. While the industry is facing challenges, it is also facing a new development situation. The technology of the products produced is updated faster and faster, and the batch size of the products is getting smaller and smaller. Compared with developed countries, there is still a big gap in the overall technology of machine tools in our country. Some high-level machine tools and automatic lines are basically imported, which leads to a great increase in investment scale and product costs, and users have higher requirements for products. With stricter requirements, people's requirements for products are becoming more and more personalized and diversified. In order to meet and respond to the needs of the market, we need to continuously introduce new technologies, processes, and products. Products in the machine tool industry have been developing toward flexibility and numerical control. CNC machine tools will become an inevitable trend of future development.

Currently used in the machine tool industry, especially the mobile workbench on special-purpose machine tools and non-standard equipment, the traditional transmission device is used to drive the screw to bring the workbench to move. Because the power of this transmission mode is decelerated by the ordinary motor through the worm gear, and then transmitted to the screw nut through the deceleration of the gear, it is required to maintain a strict installation space during operation, and it affects the transmission efficiency and increases the cumulative error. This structure not only increases the transition link of the transmission, but also adds an unreliable factor, increases the complexity of the transmission device structure, increases the manufacturing cost of the mobile workbench, and increases the labor intensity of the operator.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a new type of servo mobile workbench, which can reduce the transition link of the drive of the mobile workbench, save the installation space, and improve the performance of the mobile workbench. Positioning accuracy improves production efficiency.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A servo mobile workbench, including a servo motor, a planetary reducer, a transition box, a rear bracket, a lock nut, an intermediate sleeve, a deep groove ball bearing, a spacer sleeve, a thrust ball bearing, a flange, a buffer pad, and a ball screw Auxiliary, lead screw auxiliary support, cover plate, retaining ring for shaft, front bracket, worktable body, base, pressure plate, protective cover, protective cover bracket, large synchronous pulley, large expansion sleeve, synchronous belt, small expansion sleeve, Small timing pulley and adjustment block.

The servo motor is assembled and connected with the planetary reducer, and they are installed together on the end face of the transition box, and the transition box is installed on the end face of the base; the ball screw pair is set in the middle of the screw auxiliary support, and one end is installed through a deep groove ball bearing and a shaft retaining ring On the front bracket, the other end is installed on the rear bracket through thrust ball bearings, spacers, deep groove ball bearings, intermediate sleeves and lock nuts; the buffer pad and cover plate are fixed on the front bracket, and the flange is fixed on the rear bracket Above; the front bracket and the rear bracket are fixed between the two guide rails of the base, the screw sub-support and the pressure plate are fixed on the lower surface of the worktable body, and the workbench body is installed on the flat guide rail and V-shaped guide rail of the base; the protective cover The bracket is fixed on the two guide rail end faces of the base, one end of the protective cover is fixed on the protective cover bracket, and the other end is connected to the worktable body; the small synchronous pulley is fixed on the output shaft of the planetary reducer through the expansion connection of the small expansion sleeve , the large synchronous pulley is fixed on the tail of the ball screw pair through the expansion connection of the large expansion sleeve, the small synchronous pulley and the large synchronous pulley are connected together through the synchronous belt; the adjustment block is installed at the bottom of the transition box to adjust The center distance between the servo motor and the ball screw pair to tighten the synchronous belt.

When working, the servo motor drives the planetary reducer to drive the ball screw pair to rotate through the synchronous belt transmission, and then transmits the power to the worktable body through the screw sub-support, so that the worktable body moves in the axial direction. The forward rotation of the servo motor drives the ball screw pair to rotate forward, forcing the table body to move forward; on the contrary, the reverse rotation of the servo motor drives the ball screw pair to reverse, forcing the table body to move backward, thereby realizing the front and rear movement of the table body .

After adopting the above structure, since the servo motor drives the ball screw pair to rotate through the synchronous belt transmission through the planetary reducer, on the one hand, the structure of the workbench transmission device is simplified, and the space occupied by the transmission device is saved; on the other hand, the manufacturing cost is saved. , which improves the positioning accuracy.

Description of drawings

Fig. 1 is a schematic view of the structure of the present invention in the direction of the front view.

Fig. 2 is a schematic structural diagram of the present invention in the left view direction.

Fig. 3 is a schematic diagram of the internal structure of the present invention.

In the figure: 1. Servo motor; 2. Planetary reducer; 3. Transition box; 4. Rear bracket; 5. Lock nut; 6. Intermediate sleeve; 7. Deep groove ball bearing; 8. Spacer sleeve; 9. Thrust Ball bearing; 10. Flange; 11. Buffer pad; 12. Ball screw pair; 13. Screw auxiliary support; 14. Cover plate; 15. Shaft retaining ring; 16. Front bracket; 17. Workbench Body; 18. Base; 19. Pressure plate; 20. Protective cover; 21. Protective cover bracket; 22. Large timing pulley; 23. Large expansion sleeve; 24. Timing belt; 25. Small expansion sleeve; 26. Small timing belt Wheel; 27. Regulating block.

detailed description

The specific content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, Figure 2 and Figure 3, a servo mobile workbench mainly includes a servo motor 1, a planetary reducer 2, a transition box 3, a rear bracket 4, a lock nut 5, a middle sleeve 6, and a deep groove ball Bearing 7, Spacer 8, Thrust Ball Bearing 9, Flange 10, Cushion Pad 11, Ball Screw Pair 12, Screw Auxiliary Support 13, Cover Plate 14, Shaft Retaining Ring 15, Front Bracket 16, Worktable Body 17, base 18, pressing plate 19, protective cover 20, protective cover support 21, large synchronous belt pulley 22, large expansion cover 23, synchronous belt 24, small expansion cover 25, small synchronous belt pulley 26 and adjustment block 27.

The servo motor 1 and the planetary reducer 2 are assembled and connected, and are installed together on the end face of the transition box 3 , and the transition box 3 is installed on the end face of the base 18 . The ball screw pair 12 is set in the middle of the leading screw sub-support 13, and the leading screw sub-support 13 is installed and fixed on the lower surface of the workbench body 17. The front end of the ball screw pair 12 is installed on the front bracket 16 through the buffer pad 11, the cover plate 14, the deep groove ball bearing 7 and the shaft retaining ring 15, and the rear end is mounted on the front bracket 16 through the buffer pad 11, the flange plate 10, and the thrust ball bearing 9 , spacer sleeve 8, deep groove ball bearing 7, middle sleeve 6 and lock nut 5 are installed on the back bracket 4. The buffer pad 11 and the cover plate 14 are fixed on the front support 16, and the flange is fixed on the rear support 4. Protective cover support 21 is fixed on the flat guide rail of base 18 and the end face of V-shaped guide rail, and protective cover 20 one end is fixed on the protective cover support 21, and the other end links to each other with workbench body 17. The small synchronous pulley 26 is fixed on the output shaft of the planetary reducer 2 through the expansion connection of the small expansion sleeve 25, and the large synchronous pulley 22 is fixed on the tail of the ball screw pair 12 through the expansion connection of the large expansion sleeve 23. The synchronous pulley 26 and the large synchronous pulley 22 are connected together through the synchronous belt 24; the adjustment block 27 is installed at the bottom of the transition box, and is used to adjust the center distance between the servo motor 1 and the ball screw pair 12, so as to tighten the synchronous belt 24 .

When assembling, first assemble the workbench body 17, the screw sub-support 13, the ball screw pair 12, the front bracket 16 and the rear bracket 4, then correct the ball screw pair 12, and then install the whole assembly on the On the base 18, make the guide rail surface of the workbench body 17 fit the flat guide rail surface and the V-shaped guide rail surface of the base 18 respectively, and then install and fix the front bracket 16 and the rear bracket 4 in the middle of the flat guide rail and the V-shaped guide rail of the base 18 Finally, the pressing plate 19 is installed on the lower plane of the workbench body 17, so that the clearance between the pressing plate 19 and the lower plane of the guide rail of the base 18 is guaranteed to be within 0.05 mm.

When working, as shown in Figure 3, the servo motor 1 drives the planetary reducer 2 to drive the ball screw pair 12 to rotate through the synchronous belt transmission, and transmits the power to the ball screw pair 12, and then through the screw on the ball screw pair 12 The sub-support 13 transmits to the worktable body 17 to make the worktable body 17 move in the axial direction. The forward rotation of the servo motor 1 drives the ball screw pair 12 to rotate forward, forcing the worktable body 17 to move forward; on the contrary, the reverse rotation of the servo motor 1 drives the ball screw pair 12 to reverse, forcing the worktable body 17 to move backward, thereby realizing The front and rear movement of the worktable body 17.

To sum up, the present invention discloses a servo mobile workbench. On the one hand, the workbench simplifies the structure of the transmission device and improves the transmission efficiency. On the other hand, it saves the space occupied by the transmission device and reduces the occupied area. When the servo mobile workbench moves back and forth, the synchronous belt structure can be used to realize gapless transmission, which has higher production efficiency and ensures the positioning accuracy of the mobile workbench.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention. Protection scope, all equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. A servo mobile workbench, characterized in that it includes a servo motor (1), a planetary reducer (2), a transition box (3), a rear bracket (4), a lock nut (5), an intermediate sleeve (6 ), deep groove ball bearing (7), spacer (8), thrust ball bearing (9), flange (10), buffer pad (11), ball screw pair (12), screw sub-support ( 13), cover plate (14), shaft retaining ring (15), front bracket (16), worktable body (17), base (18), pressure plate (19), protective cover (20), protective cover bracket ( 21), large synchronous pulley (22), large expansion sleeve (23), synchronous belt (24), small expansion sleeve (25), small synchronous pulley (26) and adjustment block (27), servo motor (1) It is assembled and connected with the planetary reducer (2), and is installed on the end face of the transition box (3) together, and the transition box (3) is installed on the end face of the base (18). 2. A servo mobile workbench according to claim 1, characterized in that: the ball screw pair (12) is set in the middle of the screw sub-support (13), and the screw sub-support (13) is installed It is fixed on the lower table surface of the workbench body (17); the front end of the ball screw pair (12) passes through the buffer pad (11), cover plate (14), deep groove ball bearing (7) and shaft retaining ring (15) Installed on the front bracket (16), the rear end passes through the buffer pad (11), flange (10), thrust ball bearing (9), spacer sleeve (8), deep groove ball bearing (7), middle sleeve (6 ) and lock nut (5) are installed on the rear bracket (4). 3. A servo mobile workbench according to claim 1, characterized in that: the buffer pad (11) and the cover plate (14) are fixed on the front bracket (16), and the flange (10) is fixed on on the rear bracket (4). 4. A servo mobile workbench according to claim 1, characterized in that: the front bracket (16) and the rear bracket (4) are fixed between the two guide rails of the base (18), and the lead screw sub-support (13) and pressing plate (19) are fixed on the lower platform of workbench body (17), and workbench body (17) is installed on the flat guide rail and V-shaped guide rail of base (18). 5. A servo mobile workbench according to claim 1, characterized in that: the protective cover bracket (21) is fixed on the two guide rail end faces of the base (18), and one end of the protective cover (20) is fixed on the protective On the cover support (21), the other end links to each other with the workbench body (17). 6. A servo mobile workbench according to claim 1, characterized in that: the small synchronous pulley (26) is fixed on the output of the planetary reducer (2) through the expansion connection of the small expansion sleeve (25). On the shaft, the large synchronous pulley (22) is fixed on the tail of the ball screw pair (12) through the expansion connection of the large expansion sleeve (23), and the small synchronous pulley (26) and the large synchronous pulley (22) are The straps (24) are connected together. 7. A servo mobile workbench according to claim 1, characterized in that: the adjustment block (27) is installed at the bottom of the transition box (3) to adjust the servo motor (1) and the ball screw pair (12) in order to tighten the timing belt (24). 8. A servo mobile workbench according to claim 1, characterized in that: the servo motor (1) drives the planetary reducer (2) to drive the ball screw pair (12) to rotate through a synchronous belt drive, and the power It is transmitted to the ball screw pair (12), and then transferred to the worktable body (17) through the screw support (13) on the ball screw pair (12), so that the worktable body (17) moves in the axial direction .