Brake structure and machine tool

Abstract

The utility model discloses brake structure and lathe belong to lathe field, including base and the workbench of rotation installation in base, and the workbench is hollow structure and makes the inside workbench form installation space, brake inner ring is fixed in the inner wall bottom of workbench, and the inner wall forms installation space, and brake outer ring is fixed in the upper surface of base, and brake outer ring and brake inner ring are located at same horizontal height and coaxial arrangement, and brake outer ring or / and brake inner ring is equipped with oil cavity, and the brake outer ring or / and brake inner ring of being equipped with oil cavity is made of elastic material, and oil cavity fills oil and makes brake outer ring or / and brake inner ring swell, and brake outer ring and brake inner ring resist and produce friction to hold the workbench tightly, through above -mentioned design, brake outer ring and brake inner ring install in the inner wall department of workbench, and it is not easy to damage, and brake outer ring and brake inner ring are simple to dismantle after long -time use from base and workbench, and the convenient replacement, and brake outer ring and brake inner ring simple structure, low in cost.

Description

Technical Field

[0001] This utility model relates to the field of machine tools, and in particular to a braking structure and a machine tool including a braking structure. Background Technology

[0002] A rotary table is a device used to mount workpieces during machining on a multi-axis CNC machine tool. The table can rotate around its axis, driven by gears connected to the machine tool's transmission mechanism. Depending on the workpiece machining requirements, the table stops rotating after passing a certain angle via a braking structure and locks at a set angle position.

[0003] Existing braking structures use brake pads for braking. The brake pads are connected to a turbine via a connecting plate, and a hydraulic cylinder presses a piston to compress the brake pads, thus securing the platform structure. This type of braking structure has many parts and occupies a large amount of space during installation.

[0004] Currently, there are structures that use brake rings for braking, but existing brake rings are located near the outer edge of the worktable, making them prone to damage; furthermore, brake rings need to be replaced after prolonged use, and the existing brake ring structures are complex and difficult to replace. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a brake structure that is not easily damaged and is easy to replace.

[0006] In order to overcome the shortcomings of the prior art, the second objective of this utility model is to provide a machine tool with a brake structure that is not easily damaged and is easy to replace.

[0007] One of the objectives of this utility model is achieved through the following technical solution:

[0008] A braking structure includes a base and a worktable rotatably mounted on the base. The worktable has a hollow structure, creating an installation space inside. The braking structure also includes an outer brake ring and an inner brake ring. The inner brake ring is fixed to the bottom of the inner wall of the worktable, forming the installation space. The outer brake ring is fixed to the upper surface of the base. The outer brake ring and the inner brake ring are at the same horizontal level and coaxially arranged. The outer brake ring and / or the inner brake ring are provided with oil chambers. The outer brake ring and / or the inner brake ring with the oil chambers are made of elastic material. The oil chambers are filled with oil, causing the outer brake ring and / or the inner brake ring to expand. The outer brake ring and the inner brake ring rub against each other, thereby gripping the worktable.

[0009] Furthermore, the base is provided with a mounting groove, which is located at the inner diameter of the base and spaced apart from the inner wall of the base. The outer brake ring is fixed in the mounting groove, and the inner brake ring is located in the mounting groove.

[0010] Furthermore, the oil cavity has a U-shaped structure, and the extension direction of the oil cavity is the height direction of the outer brake ring and / or the inner brake ring.

[0011] Furthermore, the brake structure also includes a sealing ring, which is installed at the open end of the oil chamber to seal the oil chamber.

[0012] Furthermore, the oil chamber is located on the side of the outer brake ring near the inner diameter, or / and the oil chamber is located on the side of the inner brake ring near the outer diameter.

[0013] Furthermore, the brake structure also includes a first fastener and a second fastener, wherein the outer brake ring is fixed to the base by the first fastener, and the inner brake ring is fixed to the worktable by the second fastener.

[0014] Furthermore, the oil cavity is located between the first fastener and the second fastener.

[0015] Furthermore, both the first fastener and the second fastener are arranged vertically, and are parallel to the oil cavity. The first fastener and the second fastener are screws.

[0016] Furthermore, the brake structure also includes an oil pipe that communicates with the oil chamber.

[0017] The second objective of this utility model is achieved by the following technical solution:

[0018] Machine tools, including any of the above-mentioned braking structures.

[0019] Compared to existing technologies, the brake structure of this utility model further includes an outer brake ring and an inner brake ring. The inner brake ring is fixed to the bottom of the inner wall of the workbench, forming an installation space. The outer brake ring is fixed to the upper surface of the base. The outer brake ring and the inner brake ring are at the same horizontal height and coaxially arranged. The outer brake ring and / or the inner brake ring are provided with oil chambers. The outer brake ring and / or the inner brake ring with oil chambers are made of elastic material. The oil chambers are filled with oil, causing the outer brake ring and / or the inner brake ring to expand. The outer brake ring and the inner brake ring come into contact with each other, generating friction and thus gripping the workbench. Through the above design, the outer brake ring and the inner brake ring are installed on the inner wall of the workbench and are not easily damaged. After long-term use, the outer brake ring and the inner brake ring are easy to disassemble from the base and the workbench, making replacement convenient. The outer brake ring and the inner brake ring have a simple structure and low cost. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the brake structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of brake structure A.

[0022] In the diagram: 10, base; 11, mounting slot; 20, workbench; 21, inner wall; 22, installation space; 30, brake outer ring; 31, oil chamber; 40, first fastener; 50, brake inner ring; 60, second fastener; 70, sealing ring; 80, oil pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or fixed through an intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or may be fixed through an intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or may be set through an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figure 1 as well as Figure 2 The brake structure of this utility model includes a base 10, a worktable 20, a brake outer ring 30, a first fastener 40, a brake inner ring 50, a second fastener 60, a sealing ring 70, and an oil pipe 80.

[0027] The base 10 is used to mount the worktable 20. The base 10 is hollow inside, used to mount the drive components and rotating shaft that drive the worktable 20 to rotate. A mounting groove 11 is provided near the inner wall of the base 10 for mounting the inner brake ring 50 and the outer brake ring 30. The mounting groove 11 separates the inner brake ring 50 and the outer brake ring 30 from the inner wall of the base 10, preventing the inner brake ring 50 from wearing down the drive components and other parts inside the base 10. By mounting the inner brake ring 50 and the outer brake ring 30 near the inner wall of the base 10, the inner brake ring 50 and the outer brake ring 30 are effectively protected, preventing damage to them.

[0028] The worktable 20 is used to mount the workpiece to be processed, and the worktable 20 drives the workpiece to rotate. The worktable 20 has a hollow structure, and an installation space 22 is formed inside the worktable 20 for mounting the rotating shaft. The installation space 22 is formed by the inner wall of the worktable 20. When the worktable 20 is working, it rotates relative to the base 10. After the worktable 20 has rotated through a certain angle, it needs to stop rotating and be locked at a set angle position. This application achieves locking through the friction between the inner brake ring 50 and the outer brake ring 30.

[0029] The brake outer ring 30 is annular. In this embodiment, the brake outer ring 30 is fixed to the base 10 by the first fastener 40. Specifically, the height of the brake outer ring 30 is much smaller than that of the base 10 and the worktable 20, and the outer diameter of the brake outer ring 30 is also smaller than that of the base 10 and the worktable 20. An oil cavity 31 is provided on the side of the brake outer ring 30 near the brake inner ring 50. The oil cavity 31 extends along the height direction and is generally inverted U-shaped. The location of the oil cavity 31 on the brake outer ring 30 is an elastic structure. By injecting hydraulic oil into the oil cavity 31, the oil cavity 31 causes the brake outer ring 30 to expand, and the brake outer ring 30 abuts against the brake inner ring 50, thus clamping the worktable 20 and stopping its rotation. In other embodiments, the brake outer ring 30 can also be correspondingly disposed on the worktable 20, with the oil cavity 31 disposed on the brake outer ring 30.

[0030] The first fastener 40 is used to fix the brake outer ring 30. Specifically, the brake outer ring 30 is installed in the mounting groove 11, and the first fastener 40 passes through the brake outer ring 30 and engages with the base 10 to fix the brake outer ring 30 to the base 10. The first fastener 40 is vertically arranged and parallel to the oil cavity 31. In this embodiment, the first fastener 40 is a bolt.

[0031] The inner brake ring 50 is annular, and its outer diameter is smaller than that of the outer brake ring 30. The inner brake ring 50 is fixed to the bottom of the inner wall 21 and is located within the mounting groove 11. In other embodiments, the inner brake ring 50 may also be fixed to the base 10, and the outer brake ring 30 may be fixed to the worktable 20.

[0032] The second fastener 60 is used to fix the inner brake ring 50. The second fastener 60 passes through the inner brake ring 50 and engages with the worktable 20, fixing the inner brake ring 50 to the bottom of the worktable 20. The second fastener 60 is vertically arranged and parallel to the oil cavity 31. In this embodiment, the second fastener 60 is a bolt. At this time, the oil cavity 31 is located between the first fastener 40 and the second fastener 60. In other embodiments, the oil cavity 31 can also be provided on the side of the inner brake ring 50 near the outer brake ring 30, or oil cavities 31 can be provided on both the inner brake ring 50 and the outer brake ring 30.

[0033] The sealing ring 70 is installed at the end of the oil chamber 31 to seal the oil chamber 31 and prevent hydraulic oil from leaking out. Specifically, the opening of the oil chamber 31 is located at the bottom, and the sealing ring 70 is installed at the opening. When the first fastener 40 is installed on the brake outer ring 30 and the base 10, the sealing ring 70 will abut against the base 10 to achieve a seal.

[0034] The oil pipe 80 is connected to the oil chamber 31, and the oil pipe 80 supplies oil to the oil chamber 31 or extracts oil from the oil chamber 31.

[0035] When using the brake structure of this utility model, when the worktable 20 needs to be clamped, the oil pipe 80 supplies oil to the oil chamber 31, causing the oil chamber 31 to expand. The expansion of the oil chamber 31 causes the inner side of the brake outer ring 30 to expand, and the brake outer ring 30 comes into contact with the brake inner ring 50, thereby generating friction and clamping the worktable 20. The worktable 20 stops rotating relative to the base 10 and is locked. When the worktable 20 needs to rotate relative to the base 10, the oil pipe 80 draws the oil out of the oil chamber 31, causing the oil chamber 31 to contract, causing the inner side of the brake outer ring 30 to contract, and the brake outer ring 30 separates from the brake inner ring 50, releasing the lock.

[0036] The brake outer ring 30 and brake inner ring 50 of this utility model are installed on the inner wall of the workbench 20, making them less prone to damage. After long-term use, the brake outer ring 30 and brake inner ring 50 are easy to disassemble from the base 10 and the workbench 20, making them convenient to replace. The brake outer ring 30 and brake inner ring 50 have a simple structure and low cost.

[0037] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A brake structure, comprising a base and a worktable rotatably mounted on the base, wherein the worktable has a hollow structure to form an installation space inside the worktable, characterized in that: The braking structure also includes an outer brake ring and an inner brake ring. The inner brake ring is fixed to the bottom of the inner wall of the worktable, and the inner wall forms the installation space. The outer brake ring is fixed to the upper surface of the base. The outer brake ring and the inner brake ring are located at the same horizontal height and are coaxially arranged. The outer brake ring and / or the inner brake ring are provided with oil chambers. The outer brake ring and / or the inner brake ring with the oil chambers are made of elastic material. The oil chambers are filled with oil, causing the outer brake ring and / or the inner brake ring to expand. The outer brake ring and the inner brake ring rub against each other, thereby gripping the worktable.

2. The brake structure according to claim 1, characterized in that: The base is provided with a mounting groove, which is located at the inner diameter of the base and spaced apart from the inner wall of the base. The outer brake ring is fixed in the mounting groove, and the inner brake ring is located in the mounting groove.

3. The brake structure according to claim 1, characterized in that: The oil chamber has a U-shaped structure, and the extension direction of the oil chamber is the height direction of the outer brake ring and / or the inner brake ring.

4. The brake structure according to claim 3, characterized in that: The brake structure also includes a sealing ring, which is installed at the open end of the oil chamber to seal the oil chamber.

5. The brake structure according to claim 3, characterized in that: The oil chamber is located on the outer side of the brake ring near the inner diameter, or / and the oil chamber is located on the inner side of the brake ring near the outer diameter.

6. The brake structure according to claim 3, characterized in that: The brake structure further includes a first fastener and a second fastener. The outer brake ring is fixed to the base by the first fastener, and the inner brake ring is fixed to the worktable by the second fastener.

7. The brake structure according to claim 6, characterized in that: The oil cavity is located between the first fastener and the second fastener.

8. The brake structure according to claim 6, characterized in that: Both the first fastener and the second fastener are arranged vertically, and are parallel to the oil cavity. Both the first fastener and the second fastener are screws.

9. The brake structure according to claim 1, characterized in that: The brake structure also includes an oil pipe, which is connected to the oil chamber.

10. A machine tool, characterized in that: Includes the braking structure as described in any one of claims 1-9.

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