A turntable brake mechanism
By using components such as brake fixing blocks, hydraulic cylinders, pistons, and elastic steel sheets in the turntable braking mechanism, the problems of worktable deformation and high cost of existing turntable braking mechanisms are solved, achieving a double friction effect with high-efficiency braking and low cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG GUOSHENG INTELLIGENCE TECH GRP CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-07-07
AI Technical Summary
Existing turntable braking mechanisms suffer from problems such as worktable deformation, poor precision, and high manufacturing costs. In particular, the ring-type brake is prone to causing the worktable rotation center to shift, while the disc brake is too expensive to be suitable for large turntables.
It adopts components such as brake fixing block, brake cylinder, brake piston, elastic steel sheet and disc spring, and connects the worktable and base through cylindrical crossed roller bearing. Braking is achieved by the friction between the elastic steel sheet and the worktable and the outer ring of the bearing. During braking, the upper and lower surfaces contact simultaneously, providing double the friction force.
The system achieves a simple and reliable braking structure, easy installation, strong braking force, no deformation of the worktable, no impact on the bearings, and is applicable to different models of rotary worktables, thus reducing manufacturing costs.
Smart Images
Figure CN224469540U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical equipment, and specifically relates to a turntable braking mechanism. Background Technology
[0002] There are two existing types of turntable brakes: circumferential brakes and disc brakes. However, these two methods cause the following problems in actual production applications: 1. Circumferential brakes: These brakes grip the worktable from the circumference, making the worktable prone to deformation and causing the rotation center to be deflected, resulting in poor worktable accuracy and affecting machining precision. 2. Disc brakes: These brake rings have a large diameter, resulting in high manufacturing costs and making them unsuitable for large turntable brake structures. To solve the above problems, this utility model proposes a turntable brake mechanism. Utility Model Content
[0003] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model provides a turntable braking mechanism. The braking structure is simple and reliable, easy to install, the worktable does not deform during braking, and the bearings provide a large braking force.
[0004] Technical solution: A turntable braking mechanism, wherein the turntable braking mechanism is fixedly installed between the worktable and the base by a brake fixing block, and the worktable and the base are fixedly connected by a cylindrical crossed roller bearing. The turntable braking mechanism includes: a brake cylinder, a brake piston one, a brake piston two, an elastic steel sheet one, an elastic steel sheet two, a disc spring, a cover plate, a pressure plate and an O-ring.
[0005] A brake cylinder is fixedly installed on the brake fixing block. A brake piston 1 and a brake piston 2 are respectively provided on the upper and lower sides of the brake cylinder. An elastic steel sheet 1 is provided on the top of the brake piston 1, and an elastic steel sheet 2 is provided on the bottom of the brake piston 2. Disc springs are provided on the left and right sides of the brake piston 1 and the brake piston 2. The disc springs are fixedly connected to the cover plate. Pressure plates are provided on the upper and lower sides of the turntable brake mechanism. O-rings are also provided on the brake piston 1 and the brake piston 2.
[0006] As an optimization: a gap of 0.1-0.15mm is reserved between the elastic steel sheet and the workbench during installation.
[0007] As an optimization: the elastic steel sheet 2 is installed with a gap of 0.1-0.15mm between it and the outer ring of the cylindrical crossed roller bearing.
[0008] As an optimization: When the worktable applies the brakes, the brake hydraulic oil enters the brake cylinder through the brake inlet. The brake pistons 1 and 2 on the upper and lower sides of the brake cylinder push outwards respectively. At this time, the disc springs on the brake pistons 1 and 2 are compressed, and the elastic steel plates 1 and 2 on the upper and lower sides undergo elastic deformation simultaneously. The upper elastic steel plate 1 contacts the worktable, and the lower elastic steel plate 2 contacts the outer ring of the cylindrical crossed roller bearing. Through the friction between the elastic steel plate 1 and the worktable and the friction between the elastic steel plate 2 and the outer ring of the cylindrical crossed roller bearing, the worktable is locked, completing the braking action.
[0009] As an optimization: when the brake is released, the brake hydraulic oil is depressurized, and the disc spring presses brake piston one and brake piston two into the brake cylinder through its elasticity. At this time, the elastic steel plates one and two on the upper and lower sides return to their original positions, and the brake release is completed.
[0010] Beneficial effects: The specific advantages of this utility model are as follows:
[0011] 1. The brake assembly of this utility model has a high degree of modularity, simple structure, convenient installation, and low manufacturing cost. It can be used on rotary worktables of different types and models.
[0012] 2. This utility model has a large braking force. When braking, both the upper and lower surfaces brake simultaneously, doubling the contact area and providing double the friction force.
[0013] 3. This utility model has good precision, the worktable does not deform when braking, the bearing does not bear braking force, and it does not affect the service life of the bearing. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a partial structural schematic diagram of the present invention. Detailed Implementation
[0016] Example
[0017] like Figure 1-2 As shown, a turntable braking mechanism is provided. The turntable braking mechanism is fixedly installed between a worktable 1 and a base 2 via a brake fixing block 3. The worktable 1 and the base 2 are fixedly connected by a cylindrical crossed roller bearing 4. The turntable braking mechanism includes: a brake cylinder 5, a first brake piston 6, a second brake piston 7, a first elastic steel sheet 8, a second elastic steel sheet 9, a disc spring 10, a cover plate 11, a pressure plate 12, and an O-ring 13.
[0018] A brake cylinder 5 is fixedly installed on the brake fixing block 3. A brake piston 6 and a brake piston 7 are respectively installed on the upper and lower sides of the brake cylinder 5. An elastic steel sheet 8 is provided at the top of the brake piston 6, and an elastic steel sheet 9 is provided at the bottom of the brake piston 7. Disc springs 10 are provided on both the left and right sides of the brake pistons 6 and 7, and the disc springs 10 are fixedly connected to the cover plate 11. Pressure plates 12 are provided on the upper and lower sides of the turntable brake mechanism. O-rings 13 are also provided on the brake pistons 6 and 7. When installing the turntable brake mechanism assembly, a gap of 0.1-0.15mm is reserved between the worktable 1 and the elastic steel sheet 8, and a gap of 0.1-0.15mm is reserved between the elastic steel sheet 9 and the outer ring of the cylindrical crossed roller bearing 4, to ensure that the worktable 1 does not interfere with the turntable brake mechanism when rotating.
[0019] When the worktable executes the braking command, brake hydraulic oil enters the brake cylinder 5 through the brake inlet. The brake pistons 1-6 and 2-7 on the upper and lower sides of the brake cylinder 5 are pushed outwards respectively. At this time, the disc springs 10 on the brake pistons 1-6 and 2-7 are compressed, and the elastic steel plates 1-8 and 2-9 on the upper and lower sides undergo elastic deformation simultaneously. The upper elastic steel plate 1-8 contacts the worktable 1, and the lower elastic steel plate 2-9 contacts the outer ring of the cylindrical crossed roller bearing 4. Through the friction between the elastic steel plate 1-8 and the worktable 1 and the elastic steel plate 2-9 and the outer ring of the cylindrical crossed roller bearing 4, the worktable is locked, completing the braking action.
[0020] When the brake is released, the brake hydraulic oil is depressurized, and the disc spring 10 presses the brake piston 6 and brake piston 7 into the brake cylinder 5 through its elasticity. At this time, the elastic steel plates 8 and 9 on the upper and lower sides return to their original positions, and the brake release is completed.
[0021] The brake assembly of this invention has a high degree of modularity, simple structure, convenient installation, and low manufacturing cost. It can be used on rotary worktables of different types and models.
[0022] This invention provides a large braking force. When braking, both the upper and lower surfaces brake simultaneously, doubling the contact area and thus doubling the frictional force.
[0023] This invention offers high precision, prevents the worktable from deforming during braking, and ensures that the bearings do not bear braking force, thus not affecting their service life.
[0024] The foregoing description clearly and completely illustrates the technical solutions in the embodiments of this utility model, enabling those skilled in the art to better understand the advantages and features of this utility model, thereby providing a clearer definition of the scope of protection of this utility model. The embodiments described in this utility model are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
Claims
1. A turntable braking mechanism, wherein the turntable braking mechanism is fixedly installed between a worktable (1) and a base (2) by means of a brake fixing block (3), and the worktable (1) and the base (2) are fixedly connected by a cylindrical crossed roller bearing (4), characterized in that: The turntable braking mechanism includes: a brake cylinder (5), a brake piston one (6), a brake piston two (7), an elastic steel sheet one (8), an elastic steel sheet two (9), a disc spring (10), a cover plate (11), a pressure plate (12), and an O-ring (13). A brake cylinder (5) is fixedly installed on the brake fixing block (3). A brake piston one (6) and a brake piston two (7) are respectively provided on the upper and lower sides of the brake cylinder (5). An elastic steel sheet one (8) is provided on the top of the brake piston one (6), and an elastic steel sheet two (9) is provided on the bottom of the brake piston two (7). Disc springs (10) are provided on the left and right sides of the brake piston one (6) and the brake piston two (7). The disc springs (10) are fixedly connected to the cover plate (11). Pressure plates (12) are respectively provided on the upper and lower sides of the turntable brake mechanism. O-rings (13) are also provided on the brake piston one (6) and the brake piston two (7).
2. The turntable braking mechanism according to claim 1, characterized in that: The elastic steel sheet (8) is installed with a gap of 0.1-0.15mm between it and the workbench (1).
3. The turntable braking mechanism according to claim 1, characterized in that: When the elastic steel sheet 2 (9) is installed, a gap of 0.1-0.15mm is reserved between it and the outer ring of the cylindrical crossed roller bearing (4).