Inclined plane milling tool for mandrel

Abstract

An inclined plane milling tool for a mandrel relates to the technical field of composite dies and comprises a base and a clamping component. A limiting groove is formed in the top of the base, and a first limiting face used for abutting against the positioning face is formed on the side wall of the limiting groove. By means of the locking bolt, the positioning face of the mandrel can be kept in the state of abutting against the first limiting face, and therefore it is guaranteed that the inclined face to be machined is located at the horizontal position, and feed machining of a machine tool is facilitated. The inclined plane milling tool can be used for quickly positioning the core shaft, so that the machining precision is ensured, and the machining efficiency is improved. And the practical value is better.

Description

Technical Field

[0001] This utility model relates to the field of composite mold technology, and more specifically, to a milling fixture for mandrels. Background Technology

[0002] A spindle is a component used in the automotive industry for connection purposes, such as... Figure 1 As shown, it includes a cylindrical shaft with insertion blocks at both ends. To achieve better insertion and positioning, the cross-section of the insertion blocks is machined into an approximately isosceles trapezoidal structure, including two opposing and parallel parallel surfaces and an inclined surface located between the two parallel surfaces. During machining, high precision is required for the angle between the parallel and inclined surfaces. Existing milling fixtures for mandrels offer poor mandrel fixation, affecting the machining accuracy of the inclined surface, and are inconvenient to assemble and disassemble, severely impacting machining efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a milling fixture for mandrels with a novel structure, which can quickly position the mandrel, ensure machining accuracy, and improve machining efficiency.

[0004] The embodiments of this utility model are implemented as follows:

[0005] A milling fixture for mandrels, comprising:

[0006] The base has a support platform on its top, which extends along the length of the base and includes a limiting groove that runs through the support platform along its width. The mandrel has a positioning surface for positioning, and the angle between the inclined surface to be machined and the positioning surface is [value missing]. α The sidewall of the limiting groove forms a first limiting surface for abutting the positioning surface, and the angle between the first limiting surface and the vertical plane is . β , α + β =90°;

[0007] The clamping assembly includes a pressure block and a locking bolt. The pressure block is located above the limiting groove, and the pressure block can press the mandrel into the limiting groove through the locking bolt.

[0008] Furthermore, in other preferred embodiments of this utility model, the bottom wall of the limiting groove is provided with a second limiting surface, and the included angle between the second limiting surface and the first limiting surface is . γ , γ = α .

[0009] Furthermore, in other preferred embodiments of this utility model, the limiting groove is provided with a first limiting surface and a second limiting surface at both ends in the length direction, which can simultaneously position two mandrels.

[0010] Furthermore, in other preferred embodiments of this utility model, the middle part of the pressure block is provided with a first mating hole for the locking bolt to pass through, and the base is provided with a second mating hole for the locking bolt to pass through. The second mating hole is located between the two first limiting surfaces of the limiting groove, so that the pressure block can simultaneously apply pressure to the mandrels on both sides.

[0011] Furthermore, in other preferred embodiments of this utility model, a pair of pressing surfaces are symmetrically provided at the bottom of the pressure block, and the pair of pressing surfaces gradually move away from the locking bolt in a vertically upward direction.

[0012] Furthermore, in other preferred embodiments of this utility model, the second limiting surface is provided with a third mating hole, and the milling inclined surface tooling also includes a pad, which can be mated with the third mating hole through a threaded part.

[0013] Furthermore, in other preferred embodiments of this utility model, there are multiple limiting grooves and clamping components, and they correspond one-to-one. The multiple limiting grooves and multiple clamping components are spaced apart along the length direction of the support platform.

[0014] Furthermore, in other preferred embodiments of this utility model, the number of support platforms is two, and the two support platforms are symmetrically arranged on both sides of the base length direction.

[0015] Furthermore, in other preferred embodiments of this utility model, the base is provided with mounting holes for cooperating with machine tools at both ends in its length direction.

[0016] The beneficial effects of this utility model embodiment are:

[0017] This utility model provides a milling fixture for mandrels, comprising a base and a clamping assembly. The top of the base has a limiting groove, and the sidewall of the limiting groove forms a first limiting surface for abutting a positioning surface. By tightening bolts, the positioning surface of the mandrel can be held in contact with the first limiting surface, thereby ensuring that the inclined surface to be machined is in a horizontal position, facilitating machine tool feed. This milling fixture can quickly position the mandrel, ensuring machining accuracy and improving machining efficiency. It has significant practical value. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1A schematic diagram of the mandrel provided in an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of a milling fixture for a mandrel provided in an embodiment of this utility model;

[0021] Figure 3 A front view of a milling bevel tool for a mandrel provided in an embodiment of this utility model;

[0022] Figure 4 This is an enlarged schematic diagram at point IV of a milling bevel tool for a mandrel provided in an embodiment of the present invention.

[0023] Icons: 100 - Milling bevel fixture; 110 - Base; 111 - Support platform; 112 - Limiting groove; 1121 - First limiting surface; 1122 - Second limiting surface; 1123 - Third mating hole; 1124 - Pad; 113 - Mounting hole; 120 - Clamping assembly; 121 - Pressure block; 1211 - Pressure surface; 122 - Locking bolt; 200 - Mandrel; 210 - Shaft body; 220 - Insertion block; 221 - Positioning surface; 222 - Bevel. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. 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. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. 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.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the 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, and are not intended to indicate or imply that the device or component 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.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Example

[0029] This embodiment provides a milling fixture 100 for a mandrel 200, referring to... Figure 2 As shown, it includes a base 110 and a clamping assembly 120.

[0030] Among them, such as Figure 3 and Figure 4 As shown, a support platform 111 is provided on the top of the base 110. The support platform 111 is arranged along the length direction of the base 110. The support platform 111 is provided with a limiting groove 112, which extends through the support platform 111 along the width direction. The sidewall of the limiting groove 112 forms a first limiting surface 1121 for abutting against the positioning surface 221. The angle between the first limiting surface 1121 and the vertical plane is [value missing]. β .

[0031] Specifically, such as Figure 1 and Figure 4As shown, the mandrel 200 includes a cylindrical shaft 210, with insertion blocks 220 at both ends. To achieve better insertion and positioning, the cross-section of the insertion block 220 is machined into an approximately isosceles trapezoidal structure, including two parallel surfaces that are opposite to each other and an inclined surface located between the two parallel surfaces. During machining, the insertion block 220 is milled from a cylindrical block into four planes. Typically, two parallel surfaces are milled first, and then the parallel surfaces are used as positioning surfaces 221 to mill the inclined surface 222 to be machined. If the angle between the preset inclined surface 222 to be machined and the positioning surface 221 is... α Then it only needs to satisfy α + β =90°, which ensures that when the positioning surface 221 is in close contact with the first limiting surface 1121, the inclined surface 222 to be processed is on a horizontal plane, thereby facilitating the entry of the milling cutter and improving processing efficiency.

[0032] Furthermore, such as Figure 2 and Figure 3 As shown, the clamping assembly 120 includes a pressure block 121 and a locking bolt 122. The pressure block 121 is located above the limiting groove 112, and the pressure block 121 can press the mandrel 200 into the limiting groove 112 through the locking bolt 122. The clamping assembly 120 can ensure that the positioning surface 221 and the first limiting surface 1121 remain in close contact during the processing, thereby improving the processing accuracy.

[0033] In addition, such as Figure 2 and Figure 4 As shown, the bottom wall of the limiting groove 112 is provided with a second limiting surface 1122, and the included angle between the second limiting surface 1122 and the first limiting surface 1121 is . γ , γ = α During processing, the positioning surface 221 is usually first placed in close contact with the first limiting surface 1121, and one of the inclined surfaces 222 is milled out. Then, the mandrel 200 is flipped so that the milled inclined surface 222 is in contact with the second limiting surface 1122, while the positioning surface 221 continues to be in contact with the first limiting surface 1121. At this point, the second inclined surface 222 to be processed can be placed in a horizontal position, which is convenient for processing.

[0034] Furthermore, the limiting groove 112 is provided with a first limiting surface 1121 and a second limiting surface 1122 at both ends in the length direction, which can simultaneously position two mandrels 200. When the two mandrels 200 are positioned at the same time, their machined inclined surfaces 222 are located on a common horizontal plane, which facilitates simultaneous machining by the milling cutter.

[0035] The pressure block 121 has a first mating hole in the middle for the locking bolt 122 to pass through, and the base 110 has a second mating hole for the locking bolt 122 to pass through. The second mating hole is located between the two first limiting surfaces 1121 of the limiting groove 112, so that the pressure block 121 can simultaneously apply pressure to the mandrels 200 on both sides.

[0036] Furthermore, such as Figure 3 and Figure 4 As shown, a pair of pressing surfaces 1211 are symmetrically arranged at the bottom of the pressure block 121, and the pair of pressing surfaces 1211 gradually move away from the locking bolt 122 in a vertically upward direction. The inclined pressing surfaces 1211 can be squeezed to both sides as the locking bolt 122 is rotated, so that the positioning surface 221 fits more closely under pressure.

[0037] The second limiting surface 1122 is provided with a third mating hole 1123. The milling inclined surface fixture 100 also includes a pad 1124, which can be mated with the third mating hole 1123 through a threaded part. The pad 1124 can be adjusted according to the size of the mandrel 200 to ensure that the surface to be machined is higher than the upper surface of the support table 111, thereby facilitating the entry of the milling cutter.

[0038] Furthermore, such as Figure 2 As shown, there are multiple limiting grooves 112 and clamping assemblies, each corresponding to the other. These multiple limiting grooves 112 and clamping assemblies 120 are spaced apart along the length of the support platform 111. With this arrangement, multiple mandrels 200 can be fixed in a row, so that their respective machined inclined surfaces 222 are located on a common horizontal plane. The milling cutter advances along the length of the base 110, continuously milling the inclined surfaces of the multiple mandrels 200.

[0039] There are two support platforms 111, which are symmetrically arranged on both sides of the base 110 along its length. The two support platforms 111 can support and position the insertion blocks 220 at both ends of the mandrel 200, thereby enabling simultaneous processing of both ends of the mandrel 200.

[0040] Furthermore, the base 110 has mounting holes 113 at both ends along its length for mating with a machine tool. The mounting holes 113 ensure accurate installation of the base 110 on the machine tool, thereby improving machining accuracy.

[0041] In summary, this utility model embodiment provides a milling fixture 100 for a mandrel 200, which includes a base 110 and a clamping assembly 120. The top of the base 110 is provided with a limiting groove 112, and the sidewall of the limiting groove 112 forms a first limiting surface 1121 for abutting against the positioning surface 221. By tightening the locking bolt 122, the positioning surface 221 of the mandrel 200 can be held in contact with the first limiting surface 1121, thereby ensuring that the inclined surface 222 to be machined is in a horizontal position, thus facilitating the machine tool's feed. This milling fixture 100 can quickly position the mandrel 200, ensuring machining accuracy and improving machining efficiency. It has significant practical value.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A milling fixture for a mandrel, characterized in that, include: The base has a support platform on its top, which extends along the length of the base and includes a limiting groove that passes through the support platform along its width. The mandrel has a positioning surface for positioning, and the angle between the inclined surface to be machined and the positioning surface is [value missing]. α The sidewall of the limiting groove forms a first limiting surface for abutting the positioning surface, and the angle between the first limiting surface and the vertical plane is . β , α + β =90°; A clamping assembly, comprising a pressure block and a locking bolt, wherein the pressure block is located above the limiting groove, and the pressure block can press the mandrel into the limiting groove by the locking bolt.

2. The milling fixture for a mandrel according to claim 1, characterized in that, The bottom wall of the limiting groove is provided with a second limiting surface, and the included angle between the second limiting surface and the first limiting surface is . γ , γ = α .

3. The milling fixture for mandrels according to claim 2, characterized in that, The limiting groove has a first limiting surface and a second limiting surface at both ends in its length direction, which can simultaneously position the two mandrels.

4. The milling fixture for mandrels according to claim 3, characterized in that, The pressure block has a first mating hole in the middle for the locking bolt to pass through, and the base has a second mating hole for the locking bolt to pass through. The second mating hole is located between the two first limiting surfaces of the limiting groove, so that the pressure block can simultaneously apply pressure to the mandrels on both sides.

5. The milling fixture for a mandrel according to claim 4, characterized in that, The bottom of the pressure block is symmetrically provided with a pair of pressing surfaces, which gradually move away from the locking bolt in a vertically upward direction.

6. The milling fixture for a mandrel according to claim 5, characterized in that, The second limiting surface is provided with a third mating hole, and the milling inclined surface tooling also includes a pad block, which can be mated with the third mating hole through a threaded part.

7. The milling fixture for a mandrel according to claim 6, characterized in that, The number of the limiting grooves and the clamping components are multiple and correspond one-to-one, and the multiple limiting grooves and the multiple clamping components are spaced apart along the length direction of the support platform.

8. The milling fixture for a mandrel according to claim 7, characterized in that, The number of support platforms is two, and the two support platforms are symmetrically arranged on both sides of the base along its length.

9. The milling fixture for a mandrel according to claim 8, characterized in that, The base has mounting holes at both ends along its length for mating with a machine tool.

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