Locking ring milling device

Abstract

The utility model discloses a locking ring milling device which comprises an executing mechanism used for milling a locking ring, a milling tool used for installing the locking ring and a fixing mechanism used for clamping the milling tool. The milling tool comprises a mandrel and an annular opening sleeve, wherein the mandrel is of a T-shaped structure in space, and the outer surface of the locking ring is sleeved with the annular opening sleeve. Wherein the larger end of the mandrel extends into an inner hole of the locking ring, a step surface II matched with the lower surface of the larger end of the mandrel is arranged on an inner hole of the annular opening sleeve, the depth of the inner hole of the annular opening sleeve is smaller than the height of the locking ring, and the outer surface of the annular opening sleeve is clamped through an external fixing mechanism. According to the device, the mandrel of the T-shaped structure is matched with the opening sleeve, clamping force concentrated on two points on the outer side of the locking ring is evenly distributed on the circumference, point contact is changed into surface contact, the contact area is increased, and a product is evenly stressed and evenly deformed.

Description

Technical Field

[0001] This utility model relates to the processing of engine lock rings, and more specifically, to a lock ring milling device. Background Technology

[0002] When assembling the locking ring inside the existing engine, a stepped surface needs to be machined on the top surface of the locking ring. The locking ring is a thin-walled part with a wall thickness of 0.5mm, and the ratio of wall thickness to the outline diameter is 0.05. The milling machine uses a method of directly clamping the outer circle with a vise after flattening the bottom end face. Due to the thin wall of the product, clamping deformation and elastic deformation caused by radial extrusion from the cutting force during machining result in a high scrap rate. Simultaneously, during machining, under the action of the main cutting force, the thin-walled part undergoes elastic deformation due to radial extrusion from the cutting tool. The greater the depth of cut, the greater the vibration and deformation of the product. To ensure product quality, a small depth of cut is required, resulting in very low production efficiency.

[0003] Therefore, how to fix and clamp the locking ring of a thin-walled component is a problem to be solved in this technical field. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages according to the present invention, a lock ring milling device is provided, comprising: an actuator for milling a lock ring, a milling fixture for installing the lock ring, and a fixing mechanism for clamping the milling fixture, wherein the inner hole of the lock ring has a stepped surface I, and the milling fixture comprises: a mandrel with a T-shaped structure in space, the larger end of the mandrel extending into the inner hole of the lock ring, and an annular open sleeve fitted on the outer surface of the lock ring;

[0006] The annular open sleeve has a stepped surface II on its inner hole that mates with the lower surface of the larger end of the mandrel. The depth of the inner hole of the annular open sleeve is less than the height of the locking ring. The outer surface of the annular open sleeve is clamped by an external fixing mechanism.

[0007] Preferably, a support base is fitted onto the smaller end of the mandrel, and the upper surface of the support base abuts against the outer surface of the stepped surface II.

[0008] Preferably, the other side of the annular opening sleeve is provided with an outwardly extending stepped surface Ⅲ.

[0009] Preferably, a flexible layer is provided between the upper surface of the support base and the step surface II.

[0010] Preferably, the fixing mechanism is configured as a vise.

[0011] This invention offers at least the following advantages: The device uses a T-shaped mandrel and an open sleeve to engage, with a locking ring positioned between them. This distributes the clamping force, concentrated at two points on the outer side of the locking ring, evenly across the circumference, transforming point contact into surface contact. This increases the contact area, resulting in uniform force and deformation of the product. The product can be machined in two directions after a single clamping operation, eliminating the need for repeated product adjustments during processing, thus improving part quality and production efficiency.

[0012] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached image description:

[0013] Figure 1 This is a schematic diagram of the overall structure of the milling fixture of this utility model;

[0014] Figure 2 This is a cross-sectional view of the milling fixture of this utility model;

[0015] Figure 3 This is a cross-sectional view of the mandrel and support base of this utility model.

[0016] Reference numerals: 1. Locking ring, 2. Mandrel, 3. Annular opening sleeve, 4. Support base, 5. Part to be milled, 6. Flexible layer. Detailed implementation method:

[0017] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0018] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0019] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] like Figure 1 A locking ring milling device is shown, comprising: an actuator for milling a locking ring 1, a milling fixture for mounting the locking ring 1, and a fixing mechanism for clamping the milling fixture. The inner hole of the locking ring 1 has a stepped surface I. The milling fixture includes: a mandrel 2 with a T-shaped structure in space, the larger end of the mandrel 2 extending into the inner hole of the locking ring 1, and an annular open sleeve 3 sleeved on the outer surface of the locking ring 1.

[0023] The inner hole of the annular open sleeve 3 is provided with a stepped surface II that mates with the lower surface of the larger end of the mandrel 2. The depth of the inner hole of the annular open sleeve 3 is less than the height of the locking ring 1. The outer surface of the annular open sleeve 3 is clamped by an external fixing mechanism.

[0024] Working principle:

[0025] First, the locking ring 1 is placed on the milling fixture. Since the mandrel 2 has a T-shaped structure, its larger end mates with the stepped surface I of the inner hole of the locking ring 1, enabling initial axial and radial positioning of the locking ring 1, giving it a stable initial installation position on the mandrel 2. Next, the annular open sleeve 3 is fitted onto the outer surface of the locking ring 1. The stepped surface II of the inner hole of the annular open sleeve 3 mates with the lower surface of the larger end of the mandrel 2, further restricting the axial movement of the locking ring 1. Simultaneously, the external fixing mechanism clamps the outer surface of the annular open sleeve 3, providing radial constraint to the locking ring 1 from the outside. Working together with the mandrel 2, this completes the precise and stable positioning and installation of the locking ring 1. The actuator drives the milling cutter to mill the portion 5 to be milled on the top surface of the locking ring 1 according to the preset machining path and parameters, machining the stepped surface. Because the locking ring 1 is precisely positioned and firmly clamped on the milling fixture, it can effectively resist the cutting force generated by the tool during milling. On the one hand, the mating structure of the mandrel 2 and the annular open sleeve 3 effectively constrains the locking ring 1 in both the axial and radial directions, preventing large elastic deformation and vibration caused by the radial compression of the tool. On the other hand, the uniform clamping force distribution also ensures the stability of the locking ring 1 during milling, enabling the milling process to proceed smoothly and guaranteeing the dimensional accuracy and surface quality of the machined step surface.

[0026] The actuator can be configured as a milling cutter inside a lathe or machining center, which is a conventional setting in this technical field and will not be described in detail here.

[0027] The above technical solution also includes a support base 4 sleeved on the smaller end of the mandrel 2, the upper surface of which abuts against the outer surface of the stepped surface II. Using this method, the support base 4, sleeved on the smaller end of the mandrel 2 and abutting against the outer surface of the stepped surface II, provides additional axial support for the milling fixture. During milling, the locking ring 1 is subjected to the cutting force of the milling cutter, which generates an axial component force. The support base 4 effectively resists this axial component force, preventing the locking ring 1, the annular open sleeve 3, and the mandrel 2 from axial displacement or wobbling, making the entire milling fixture more stable during machining.

[0028] Meanwhile, a flexible layer 6 is provided between the support base 4 and the stepped surface II of the annular open sleeve 3. Through the flexible layer 6, during milling, vibrations are generated when the tool cuts the locking ring 1. These vibrations may be transmitted to the support base 4 and the entire milling device through the locking ring 1 and the annular open sleeve 3. The flexible layer 6 has elastic deformation properties, which can absorb and buffer these vibration energies, reducing the transmission of vibration between components. When vibration is transmitted to the flexible layer 6, the flexible layer 6 undergoes elastic deformation, converting the vibration energy into its own elastic potential energy, thereby reducing the impact of vibration on milling accuracy and equipment stability, and ensuring the machining quality of the locking ring 1.

[0029] In the above technical solution, the other side of the annular open sleeve 3 is provided with an outwardly extending stepped surface III. This technique provides the operator with a more convenient gripping point when assembling and disassembling the milling fixture. When installing the annular open sleeve 3 to a suitable position or removing it from the equipment, the operator can more easily grasp or manipulate the stepped surface III, making the assembly and disassembly process more convenient and improving work efficiency. Simultaneously, the stepped surface III also facilitates the adjustment and alignment of the annular open sleeve 3 during assembly, reducing assembly errors.

[0030] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A lock ring milling device, comprising: An actuator for milling a lock ring, a milling fixture for installing the lock ring, and a fixing mechanism for clamping the milling fixture, wherein the inner hole of the lock ring has a stepped surface I, characterized in that the milling fixture includes: a mandrel with a T-shaped structure in space and an annular open sleeve fitted on the outer surface of the lock ring. The larger end of the mandrel extends into the inner hole of the locking ring. The inner hole of the annular open sleeve is provided with a stepped surface II that mates with the lower surface of the larger end of the mandrel. The depth of the inner hole of the annular open sleeve is less than the height of the locking ring. The outer surface of the annular open sleeve is clamped by an external fixing mechanism.

2. The locking ring milling device according to claim 1, characterized in that, Also includes: A support base is fitted onto the smaller end of the mandrel, the upper surface of which abuts against the outer surface of the stepped surface II.

3. The locking ring milling device according to claim 2, characterized in that, The other side of the annular opening sleeve is provided with an outwardly extending stepped surface Ⅲ.

4. The locking ring milling device according to claim 2, characterized in that, A flexible layer is provided between the upper surface of the support base and the stepped surface II.

5. The locking ring milling device according to claim 2, characterized in that, The fixing mechanism is configured as a vise.

Images