Direct connection rotary roll drive structure

Abstract

A direct-drive rotary roll drive structure is disclosed, comprising a planetary gear reducer fixed to the rear side of a housing, connected to a servo motor, and the output shaft of the planetary gear reducer connected to the rear end of a main shaft located inside the housing. The main shaft is mounted on the center holes on the front and rear sides of the housing via first and second rolling bearings, and a chuck mechanism is connected to the front end of the main shaft. This direct-drive rotary roll drive structure applies the precise rotation control of a servo motor to the rotary processing of rolls, resulting in a simple mechanical structure and high precision.

Description

Technical Field

[0001] This utility model relates to the field of wire drawing technology. Background Technology

[0002] Existing roll drawing equipment uses hydraulically driven mechanisms, which require converting linear motion into rotational motion. This results in complex structures and the rotation angle is limited by the mechanical structure. Summary of the Invention

[0003] To address the aforementioned problems with existing hydraulic drive structures in wire drawing equipment, this invention provides a direct-drive rotary roll drive structure.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a direct-drive rotary roller drive structure, wherein a planetary gear reducer 2 is fixed to the rear side of the housing 3, the planetary gear reducer 2 is connected to a servo motor 1, the output shaft of the planetary gear reducer 2 is connected to the rear end of the main shaft 4 located inside the housing 3, the main shaft 4 is installed on the center holes on the front and rear sides of the housing 3 through the first 5 and the second rolling bearing 7, and the front end of the main shaft 4 is connected to a chuck mechanism.

[0005] The planetary gear reducer 2 and the main shaft 4 are keyed together.

[0006] The outer ring of the second rolling bearing 7 is fixed to the front side of the housing 3 by the pressure cap 8; a positioning sleeve 12 is installed between the main shaft 4 and the inner wall of the front side of the housing 4, and a nut 13 is installed on the main shaft 4 behind the positioning sleeve 12. The inner ring of the second rolling bearing 7 is fixed by the positioning sleeve 12 through the round nut 13.

[0007] A rotary bearing 6 is installed on the inner rear wall of the housing 3, located outside the main shaft 4.

[0008] The chuck mechanism includes a chuck base 9, a middle chuck 10, and an outer chuck 11. The chuck base 9 is fixed on the main shaft 4. The middle chuck 10 and the chuck base 9 are connected by a concave-convex structure. The middle chuck 10 is provided with an elongated hole. The middle chuck 10 and the chuck base 9 are slidably limited by bolts 14 and the elongated hole. The outer chuck 11 and the middle chuck 10 are connected by a concave-convex structure. The front side of the outer chuck 11 is connected to the workpiece roll.

[0009] This utility model's direct-drive rotary roll drive structure applies the precise rotation control of a servo motor to the rotary processing of rolls, resulting in a simple mechanical structure and high precision. Attached Figure Description

[0010] Figure 1 This is a front cross-sectional view of the direct-drive rotary roll structure of this utility model.

[0011] In the diagram: 1. Servo motor, 2. Planetary gear reducer, 3. Housing, 4. Spindle, 5. Rolling bearing, 6. Rotary bearing, 7. Rolling bearing, 8. Pressure cover, 9. Chuck seat, 10. Middle chuck, 11. Outer chuck, 12. Positioning sleeve, 13. Nut, 14. Bolt. Detailed Implementation

[0012] The direct-drive rotary roll drive structure of this utility model is as follows: Figure 1 As shown, the housing 3 is fixed to the machine tool worktable with bolts. The servo motor 1 is connected and fixed to the planetary gear reducer 2, which outputs rotational torque. The planetary gear reducer 2 is fixed on the housing 3, and its output shaft is connected to the spindle 4, driving the spindle 4 to rotate. The spindle 4 is installed on the center hole of the housing 3 through the first rolling bearing 5 and the second rolling bearing 7, and can rotate freely. The rotary bearing 6 is installed on the inner side wall of the housing 3 to bear the axial force of the spindle 4. The pressure cover 8 fixes the outer ring of the rolling bearing 7 to the housing 3. The round nut 13 fixes the inner ring of the rolling bearing 7 to the spindle 4 through the positioning sleeve 12. The chuck seat 9 is fixed to the spindle 4 with bolts and keys and rotates with the spindle 4. The middle chuck 10 and the chuck seat 9 are connected by a concave-convex sliding structure. The middle chuck 10 is provided with an elongated hole. The middle chuck 10 and the chuck seat 9 are connected by a bolt 14 and the elongated hole for sliding limit. The middle chuck 10 can slide a certain distance in the direction of the groove while rotating with the chuck seat 9. The outer chuck 11 is connected to the middle chuck 10 by a concave-convex sliding structure. The outer chuck 11 can slide a certain distance in the direction of the groove while rotating with the middle chuck 10. The direction of the groove is perpendicular to the direction of the groove between the middle chuck 10 and the chuck seat 9. The outer chuck 11 is connected to the workpiece roll and drives the roll to rotate. Through the sliding of the concave-convex structure in two directions, the error between the axis of the main shaft 4 and the axis of the workpiece roll is corrected.

[0013] The direct-drive rotary roll drive structure of this utility model uses a servo motor 1 to drive the spindle 4 to rotate, thereby driving the chuck mechanism to rotate, thus applying the precise rotation control drive of the servo motor to the rotational processing of the roll.

Claims

1. A direct-drive rotary roll drive structure, characterized in that: The planetary gear reducer (2) is fixed to the rear side of the housing (3). The planetary gear reducer (2) is connected to the servo motor (1). The output shaft of the planetary gear reducer (2) is connected to the rear end of the main shaft (4) located inside the housing (3). The main shaft (4) is installed on the center holes on the front and rear sides of the housing (3) through the first (5) and the second rolling bearing (7). The front end of the main shaft (4) is connected to the chuck mechanism.

2. The direct-drive rotary roll drive structure according to claim 1, characterized in that: The planetary gear reducer (2) and the main shaft (4) are keyed together.

3. The direct-drive rotary roll drive structure according to claim 1, characterized in that: The outer ring of the second rolling bearing (7) is fixed to the front side of the housing (3) by the pressure cap (8); a positioning sleeve (12) is installed between the main shaft (4) and the inner wall of the front side of the housing (4); a nut (13) is installed on the main shaft (4) behind the positioning sleeve (12); and the inner ring of the second rolling bearing (7) is fixed by the positioning sleeve (12) through the round nut (13).

4. The direct-drive rotary roll drive structure according to claim 1, characterized in that: A rotary bearing (6) is installed on the inner rear wall of the housing (3) outside the main shaft (4).

5. The direct-drive rotary roll drive structure according to claim 1, characterized in that: The chuck mechanism includes a chuck seat (9), a middle chuck (10), and an outer chuck (11). The chuck seat (9) is fixed on the main shaft (4). The middle chuck (10) and the chuck seat (9) are connected by a concave-convex structure. The middle chuck (10) is provided with an elongated hole. The middle chuck (10) and the chuck seat (9) are connected by a bolt (14) and the elongated hole for sliding limit connection. The outer chuck (11) and the middle chuck (10) are connected by a concave-convex structure. The front side of the outer chuck (11) is connected to the workpiece roll.

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