An inner cavity positioning fixture for CNC machining with multi-angle support

Abstract

The utility model discloses a multi-angle supported inner cavity positioning fixture for CNC machining, comprising a gripping rod for support, a fixed circular plate, a second spring and a third spring, the inner slot of the fixed circular plate is connected with an upper pull rod, and the lower end of the upper pull rod is fixedly connected with a first spring, the outer side of the second spring is fixedly connected with a rotating frame, and the inner side of the second spring is fixedly connected with a sliding ball, the outer side of the third spring is fixedly connected with a slider, and the outer side of the slider is fixedly connected with a fixture body. The multi-angle supported inner cavity positioning fixture for CNC machining can clamp inner cavities of different sizes, is suitable for the inner cavities of various special-shaped CNC machines, improves the practicality of the positioning fixture, can quickly take out the positioning fixture for replacement or maintenance, is relatively convenient to use, can adjust the support angle, and support the inner cavities of CNC machines of different specifications, thereby improving the scope of application of the positioning fixture.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, in particular to an inner cavity positioning fixture for numerical control machining with multi-angle support. Background Art

[0002] The inner cavity support device for CNC machining can make the clamping force more balanced, evenly distribute the pressure on the external support to each support point, reduce the risk of deformation of the workpiece during machining, have more reliable clamping performance, and have stronger stability. There are various inner cavity positioning fixtures for CNC machining with multi-angle support on the market;

[0003] However, general CNC machining inner cavity positioning fixtures can clamp inner cavities of different sizes and are suitable for the inner cavities of various special-shaped CNC machines, which improves the practicality of the positioning fixture. The positioning fixture can be quickly taken out for replacement or repair, is more convenient to use, and can adjust the support angle to support the inner cavities of CNC machines of different specifications, thereby improving the scope of application of the positioning fixture. Therefore, we propose a multi-angle supported inner cavity positioning fixture for CNC machining to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide an inner cavity positioning fixture for CNC machining with multi-angle support, so as to solve the current problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inner cavity positioning fixture for CNC machining with multi-angle support, comprising a gripping rod for support;

[0006] Also includes:

[0007] A fixed circular plate, wherein a multi-angle support structure is arranged on the outer side of the fixed circular plate, wherein the multi-angle support structure comprises an upper pull rod, a first spring and a lower pull rod, the inner slot of the fixed circular plate is connected to the upper pull rod, and the lower end of the upper pull rod is fixedly connected to the first spring, and the lower end of the first spring is fixedly connected to the lower pull rod;

[0008] A second spring, wherein the outer side of the second spring is fixedly connected to a rotating frame, the inner side of the second spring is fixedly connected to a sliding ball, and the inner slot of the sliding ball is connected to an insert rod;

[0009] The third spring has a slider fixedly connected to the outside of the third spring, and the fixture body is fixedly connected to the outside of the slider, and the inside of the slider is slidably connected to the inside of the third spring.

[0010] Preferably, the outer side of the upper rod is slidably connected to the inner side of the upper end of the rotating frame, and the lower end inner side of the rotating frame is slidably connected to the lower rod, and the outer side of the lower end of the upper rod is slidably connected to the inner side of the lower rod.

[0011] Preferably, a rotating rack is slidably connected to the outer side of the fixed circular plate, and the rotating rack is arranged at an equal angle on the outer side of the fixed circular plate, and a gripping rod is fixedly connected to the lower end of the fixed circular plate.

[0012] Preferably, the internal slot of the rotating frame is connected with an insertion rod, and the outer side of the insertion rod is fixedly connected with a third spring.

[0013] Preferably, the sliding balls are symmetrically arranged on the outer sides of the left and right ends of the insertion rod.

[0014] Preferably, the third spring is symmetrically arranged on the outer sides of the left and right ends of the insertion rod, and the slider is symmetrically arranged on the inner sides of the left and right ends of the clamp body, and the inner side of the insertion rod is slidably connected to the slider.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the multi-angle supported inner cavity positioning fixture for CNC machining can clamp inner cavities of different sizes, is suitable for the inner cavities of various special-shaped CNC machines, improves the practicality of the positioning fixture, can quickly take out the positioning fixture for replacement or maintenance, is more convenient to use, can adjust the support angle, and support the inner cavities of CNC machines of different specifications, thereby improving the applicable scope of the positioning fixture;

[0016] 1. A fixed circular plate, an upper pull rod and a lower pull rod are provided. By pulling the upper pull rod and the lower pull rod outward, the first spring fixedly connected to the inner side of the upper pull rod and the lower pull rod is subjected to pressure, so that the outer sides of the upper pull rod and the lower pull rod slide outward on the inner sides of the upper and lower ends of the fixed circular plate respectively. The support angle can be adjusted to support the inner cavities of CNC machines of different specifications, thereby improving the application range of the positioning fixture;

[0017] 2. A second spring, a sliding ball and an insertion rod are provided. The insertion rod is connected to the internal slot of the rotating frame, the sliding balls are connected to the outer slots of the left and right ends of the insertion rod, and the second spring is fixedly connected to the outer side of the sliding ball. The positioning fixture can be quickly taken out for replacement or maintenance, which is convenient to use;

[0018] 3. A third spring, a slider and a clamp body are provided. By fixing the slider on the outside of the third spring, when the clamp body is pushed inward, the third spring fixedly connected on the inside of the slider is subjected to pressure and deformed, so that the slider slides inward on the outside of the insertion rod. This arrangement can clamp inner cavities of different sizes and is suitable for the inner cavities of various special-shaped CNC machines, thereby improving the practicability of the positioning fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0023] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0024] In the figure: 1, grip rod; 2, fixed circular plate; 3, rotating frame; 4, upper pull rod; 5, first spring; 6, lower pull rod; 7, second spring; 8, sliding ball; 9, insert rod; 10, third spring; 11, slider; 12, clamp body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a technical solution: a multi-angle supported inner cavity positioning fixture for CNC machining, comprising a gripping rod 1, a fixed circular plate 2, a rotating frame 3, an upper pull rod 4, a first spring 5, a lower pull rod 6, a second spring 7, a sliding ball 8, an insert rod 9, a third spring 10, a sliding block 11 and a fixture body 12;

[0027] When the multi-angle supported inner cavity positioning fixture for CNC machining is in use, when it is necessary to support the inner cavity of the CNC machine, the fixture body 12 is pushed inward, at this time, the slider 11 fixedly connected to the inner side of the fixture body 12 slides inward on the inner side of the insertion rod 9, and the third spring 10 fixedly connected to the inner side of the slider 11 is subjected to pressure and deformed, so that the fixture body 12 moves inward, and holds the grip rod 1 and pushes inward, so that the outer side of the fixture body 12 is placed in the inner cavity of the CNC machine. At this time, the fixture body 12 is released, and the third spring 10 fixedly connected to the inner side of the slider 11 loses pressure and restores elasticity, so that the slider 11 slides outward on the inner side of the insertion rod 9, so that the outer side of the fixture body 12 is closely fitted to the inner cavity of the CNC machine, and the inner cavity is positioned and clamped. It can clamp inner cavities of different sizes and is suitable for the inner cavities of various special-shaped CNC machines, thereby improving the practicality of the positioning fixture.

[0028] When it is necessary to replace or repair the positioning fixture, the plug rod 9 is pulled outwards. At this time, the sliding balls 8 connected to the outer grooves at the left and right ends of the plug rod 9 are subjected to pressure and slide inwards. The second spring 7 fixedly connected to the outer side of the sliding ball 8 is subjected to pressure and deformed, causing the plug rod 9 to slide outwards inside the rotating frame 3 and detach from the slot connection between the rotating frames 3. The plug rod 9 is removed and the repaired plug rod 9 or the new plug rod 9 is pushed inwards. At this time, the sliding ball 8 connected to the inner groove of the rotating frame 3 slides outwards inside the rotating frame 3, and the second spring 7 fixedly connected to the outer side of the sliding ball 8 is subjected to pressure and deformed, causing the plug rod 9 to slide inwards inside the rotating frame 3 and connect with the slot between the rotating frames 3. At the same time, the slot at the outermost groove of the plug rod 9 is connected to the sliding ball 8 to limit the plug rod 9. The positioning fixture can be quickly taken out for replacement or repair, which is more convenient to use.

[0029] When it is necessary to support the inner cavity of the CNC machine at multiple angles, the upper pull rod 4 and the lower pull rod 6 are pulled outward at the same time. At this time, the first spring 5 fixedly connected to the inner sides of the upper pull rod 4 and the lower pull rod 6 is subjected to pressure and deformed, so that the outer side of the upper end of the upper pull rod 4 slides upward inside the rotating frame 3, and the outer side of the lower end of the lower pull rod 6 slides downward inside the lower end of the rotating frame 3. At the same time, the outer side of the lower end of the upper pull rod 4 slides downward inside the lower end of the rotating frame 3, limiting the position of the upper pull rod 4. The inner ends of the upper pull rod 4 and the lower pull rod 6 are separated from the slot connection between the fixed circular plate 2. At this time, the rotating frame 3 connected to the outer slots at the upper and lower ends of the fixed circular plate 2 is rotated to make the rotating frame 3 The frame 3 slides on the outside of the fixed circular plate 2, and after rotating to the required position according to the required angle of the inner cavity, the upper pull rod 4 and the lower pull rod 6 are released. At this time, the first spring 5 fixedly connected to the inner side of the upper pull rod 4 and the lower pull rod 6 loses pressure and restores elasticity, so that the inner side of the upper pull rod 4 and the lower pull rod 6 are connected to the groove between the fixed circular plate 2, and the outer side of the upper end of the upper pull rod 4 slides downward inside the rotating frame 3, and the outer side of the lower end of the lower pull rod 6 slides upward inside the lower end of the fixed circular plate 2, so as to limit the rotating frame 3, adjust the support angle, support the inner cavity of CNC machinery of different specifications, and improve the applicability of the positioning fixture.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-angle supported inner cavity positioning fixture for CNC machining, comprising a gripping rod (1) for support; It is characterized in that Also includes: A fixed circular plate (2), wherein a multi-angle support structure is arranged on the outer side of the fixed circular plate (2), wherein the multi-angle support structure comprises an upper pull rod (4), a first spring (5) and a lower pull rod (6), the inner groove of the fixed circular plate (2) is connected to the upper pull rod (4), the lower end of the upper pull rod (4) is fixedly connected to the first spring (5), and the lower end of the first spring (5) is fixedly connected to the lower pull rod (6); A second spring (7), wherein the outer side of the second spring (7) is fixedly connected to the rotating frame (3), and the inner side of the second spring (7) is fixedly connected to a sliding ball (8), and the inner side slot of the sliding ball (8) is connected to an insertion rod (9); A third spring (10), wherein the outer side of the third spring (10) is fixedly connected to a slider (11), the outer side of the slider (11) is fixedly connected to a clamp body (12), and the inner side of the slider (11) is slidably connected to the inside of the third spring (10).

2. The multi-angle supported inner cavity positioning fixture for CNC machining according to claim 1, characterized in that: The outer side of the upper pull rod (4) is slidably connected to the inner side of the upper end of the rotating frame (3), and the inner side of the lower end of the rotating frame (3) is slidably connected to the lower pull rod (6), and the outer side of the lower end of the upper pull rod (4) is slidably connected to the inner side of the lower pull rod (6).

3. The multi-angle supported inner cavity positioning fixture for CNC machining according to claim 1, characterized in that: The outer side of the fixed circular plate (2) is slidably connected to a rotating frame (3), and the rotating frame (3) is arranged at an equal angle on the outer side of the fixed circular plate (2), and the lower end of the fixed circular plate (2) is fixedly connected to a gripping rod (1).

4. The multi-angle supported inner cavity positioning fixture for CNC machining according to claim 1, characterized in that: The internal slot of the rotating frame (3) is connected to an insertion rod (9), and the outer side of the insertion rod (9) is fixedly connected to a third spring (10).

5. The multi-angle supported inner cavity positioning fixture for CNC machining according to claim 1, characterized in that: The sliding balls (8) are symmetrically arranged on the outside of the left and right ends of the insertion rod (9).

6. The multi-angle supported inner cavity positioning fixture for CNC machining according to claim 1, characterized in that: The third spring (10) is symmetrically arranged on the outside of the left and right ends of the insertion rod (9), and the slider (11) is symmetrically arranged on the inside of the left and right ends of the clamp body (12), and the slider (11) is slidably connected to the inside of the insertion rod (9).

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