Main shaft supporting device
By designing a spindle bearing device with a simplified structure, using a combination of double-row cylindrical roller bearings and angular contact ball bearings, the problems of complex structure and assembly difficulty of spindle bearings are solved, and a simple assembly process is realized, suitable for teaching and beginners' practice in mechanical manufacturing.
Patent Information
- Application Number
- CN202420422542.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-03-05
AI Technical Summary
In the field of mechanical manufacturing, the spindle support structure is complex and the assembly skills are high, making it difficult to meet the needs of students who are beginners in mechanical manufacturing and assembly.
A spindle support device is designed, adopting a simplified structure design, including a double-row cylindrical roller bearing at the front end and a pair of face-to-face angular contact ball bearings at the rear end. Through the cooperation of nuts and bolts, the device is easily assembled.
It realizes the simplification of the spindle support structure and the simplicity of assembly, reduces the difficulty of assembly, and is suitable for teaching and beginners' practice.
Smart Images
Figure CN222760164U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent belongs to the field of mechanical manufacturing teaching. Background Art
[0002] In the field of mechanical manufacturing, the spindle support structure is usually complex in structure and requires high assembly skills, which is difficult for students who are just starting to learn mechanical manufacturing and assembly. Students are in urgent need of a spindle support structure with a simple structure and easy assembly. Utility Model Content
[0003] The utility model aims to help students master mechanical manufacturing and assembly skills as quickly as possible, and therefore a spindle support device is developed. The spindle support device consists of a spindle (1), a first nut (2), a first washer (3), a front double-row cylindrical roller bearing (4), a first bolt (5), a first gland (6), a second washer (7), a second nut (8), a pair of angular contact ball bearings (9) installed face to face (DB) at the rear end, a second gland (10), a second bolt (11), a third washer (12), a third nut (13), and a spindle box (14).
[0004] Since the main shaft support device is used for teaching, it has a simpler structure and is easier to assemble than the original mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0005] Figure 1 Schematic diagram of the spindle support device. DETAILED DESCRIPTION
[0006] The utility model is further described below. The main shaft support device is composed of a main shaft (1), a first nut (2), a first washer (3), a double-row cylindrical roller bearing (4), a first bolt (5), a first gland (6), a second washer (7), a second nut (8), a pair of face-to-face angular contact ball bearings (9), a second gland (10), a second bolt (11), a second washer (12), a third nut (13), and a main shaft box (14).
[0007] The front end is a double-row cylindrical roller bearing (4) to bear the radial force during cutting. The left end face of the outer ring is against the end face of the inner hole of the front end of the spindle box (14). The outer ring and the inner hole of the front end of the spindle box (14) are interference fit. The right end face of the outer ring is against the left end face of the first pressure cover (6) and is tightened by the first bolt (5) on the spindle box (14).
[0008] The left end face of the inner ring of the double-row cylindrical roller bearing (4) is against the right end face of the second washer (7), the left side of the second washer (7) is the second nut (8), the right end face of the inner ring is against the left end face of the first washer (3), and the right side of the first washer (3) is the first nut (2).
[0009] The rear end is a group of angular contact ball bearings (9) installed face to face, which mainly bear the front and rear axial forces during cutting. The left end face of the outer ring of the left angular contact ball bearing (9) is against the right end face of the second gland (10), and is pressed by the second bolt (11) and the thread connection with the spindle box (14). The left side of the inner ring is the second washer (12), which is against the third nut (13). The right end faces of the inner and outer rings of the right angular contact ball bearing (9) are against the left end face of the inner hole surface at the rear end of the spindle box (14). The angular contact ball bearing (9) is pressed forward by moving the double third nuts (13) and the threads of the spindle, and the angular contact ball bearing (9) is loosened by a tool.
[0010] The main shaft support device is characterized in that: the left side of the second washer (7) of the front double-row cylindrical roller bearing (4) of the main shaft (1) is provided with a second nut (8) threadedly connected to the main shaft (1) for tightening the front double-row cylindrical roller bearing (4) on the main shaft (1); the right side of the front double-row cylindrical roller bearing (4) of the main shaft (1) is provided with a first nut (2) threadedly connected to the main shaft (1) for loosening the front double-row cylindrical roller bearing (4) on the main shaft (1); the rear The left end face of the outer ring of one of the angular contact ball bearings (9) facing right, which is mounted face to face (DB), is pressed against the right end face of the gland (10) by the second bolt (11) and the threaded connection with the spindle box is tightened, and then the two third nuts (13) are used to thread the spindle (1), and the rear end of the angular contact ball bearings (9) mounted face to face (DB) are fastened to the spindle (1) and the spindle box (14) by the third washer (12).
[0011] When adjusting the tightness of the double-row cylindrical roller bearing (4), the first nut (2) and the second nut (8) must cooperate with each other. When tightening, the first nut (2) must be turned counterclockwise to move forward, and then the second nut (8) must be turned counterclockwise to make the inner hole conical surface of the double-row cylindrical roller bearing (4) move forward along the conical surface of the main shaft (1). When loosening, the second nut (8) must be turned clockwise to move backward, and then the first nut (2) must be turned clockwise to make the inner hole conical surface of the double-row cylindrical roller bearing (4) move backward along the conical surface of the main shaft (1) toward the small end surface.
Claims
1. A spindle support device, comprising a spindle (1), a first nut (2), a first washer (3), a front double-row cylindrical roller bearing (4), a first bolt (5), a first gland (6), a second washer (7), a second nut (8), a pair of DB angular contact ball bearings (9) installed face to face at the rear end, a second gland (10), a second bolt (11), a third washer (12), a third nut (13), and a spindle box (14), wherein the front double-row cylindrical roller bearing (4) of the spindle (1) is connected to the thread of the spindle (1) through the second nut (8), the front double-row cylindrical roller bearing (4) is tightened on the spindle (1), and the spindle (1) ) A first nut (2) is provided on the right side of the front double-row cylindrical roller bearing (4) and is threadedly connected to the main shaft (1) for loosening the front double-row cylindrical roller bearing (4) on the main shaft (1); the left end face of the outer ring of one of the angular contact ball bearings (9) facing right, which is mounted face to face at the rear end, is pressed against the right end face of the gland (10) by a second bolt (11) and threadedly connected to the main shaft box; two third nuts (13) are then threadedly connected to the main shaft (1); and the rear pair of angular contact ball bearings (9) mounted face to face (DB) are fastened to the main shaft (1) and the main shaft box (14) by a third washer (12).