Aviation valve core clamp

Abstract

The utility model discloses an aviation valve element clamp which comprises a self-centering vice, a floating positioning block, a cutter handle, a first pull-down claw and a second pull-down claw. The first pull-down claw and the second pull-down claw move to jointly apply acting force to the connecting part, wherein the acting force enables the positioning plane to abut against and be attached to the reference plane. The reference plane and the positioning plane are both flat planes, and the positioning plane is perpendicular to the axis of the workpiece holding part, so that after the slender rod-shaped aviation valve core is fixed in the accommodating groove, the axis of the slender rod-shaped aviation valve core is parallel to or coincides with the axis of the workpiece holding part, and the axis of the aviation valve core is ensured to be perpendicular to the positioning plane. The structure of the workpiece holding part ensures that the aviation valve element does not shake in the machining process, and deformation of the aviation valve element is avoided. Therefore, when the aviation valve element clamp is used for clamping the aviation valve element, the vertical precision of the aviation valve element can be guaranteed, and deformation of the aviation valve element can be reduced to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clamp, especially relates to an aviation valve core clamp. BACKGROUND

[0002] The aviation valve core part is a precision part, and its structure is mainly long slender rod and thin wall sleeve, and it is in high temperature, friction and high external force environment for a long time. The valve core part is prone to deformation in the machining process due to its structural characteristics (long slender rod and thin wall sleeve), and the existing clamp cannot effectively control the deformation of the part, so that the roughness and perpendicularity of the machined part do not meet the requirements. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem that the existing technology has defects, and provides an aviation valve core clamp.

[0004] The utility model solves the above technical problem through the following technical scheme:

[0005] An aviation valve core clamp comprises:

[0006] A self-centering vice;

[0007] A floating positioning block is movably installed on the self-centering vice, and a reference plane is arranged on the floating positioning block;

[0008] A tool shank comprises a workpiece holding part and a connecting part, the workpiece holding part is provided with an accommodating groove extending in the axial direction thereof, the accommodating groove is used for installing the aviation valve core, one end of the connecting part is provided with a positioning plane, the positioning plane is perpendicular to the axis of the workpiece holding part, and the side wall of the connecting part is provided with a guide inclined surface inclined from the inside to the outside and to the positioning plane;

[0009] A first pull-down claw comprises a first main body and a first pressing part, the first main body is connected with the self-centering vice and located on one side of the connecting part, and the first pressing part is provided with a first pressing inclined surface capable of abutting the guide inclined surface;

[0010] A second pull-down claw comprises a second main body and a second pressing part, the second main body is connected with the self-centering vice and located on the other side of the connecting part, and the second pressing part is provided with a second pressing inclined surface capable of abutting the guide inclined surface;

[0011] Wherein, the shank is placed on the floating positioning block, the positioning plane is in contact with the reference plane, the first lower claw and the second lower claw are moved to the direction close to the connecting part by the self-centering vice, after the first pressing inclined surface and the second pressing inclined surface are in contact with the guide inclined surface, the first lower claw and the second lower claw continue to move and jointly exert the force on the connecting part to make the positioning plane tightly contact with the reference plane.

[0012] Preferably, the side wall of the connecting part is provided with a positioning groove;

[0013] The aerovalve core clamp further comprises an angular positioning mechanism, the angular positioning mechanism comprises a base and a positioning rod, the base is installed on the floating positioning block and does not interfere with the first pressing inclined surface and the second pressing inclined surface in contact with the guide inclined surface, and the positioning rod is movably installed on the base and can be inserted into the positioning groove.

[0014] Preferably, the inclination angle of the guide inclined surface is 30°, and the inclination angle of the first pressing inclined surface and the second pressing inclined surface is 30°.

[0015] Preferably, in terms of the number of the positioning grooves, the number of the angular positioning mechanisms is two.

[0016] Preferably, the shank is an HSK shank.

[0017] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the utility model are obtained.

[0018] The aerovalve core clamp of the utility model, which comprises a self-centering vice, a floating positioning block, a shank, a first lower claw and a second lower claw. The first lower claw and the second lower claw move to jointly exert the force on the connecting part to make the positioning plane tightly contact with the reference plane. Since the reference plane and the positioning plane are both flat planes, and the positioning plane is perpendicular to the axis of the workpiece holding part, when the elongated rod-shaped aerovalve core is fixed in the accommodating groove, the axis is parallel to or coincides with the axis of the workpiece holding part, so that the axis of the aerovalve core is also perpendicular to the positioning plane. The structure of the workpiece holding part ensures that the aerovalve core does not shake during machining and is not deformed. Therefore, the aerovalve core clamp of the utility model can not only ensure the vertical precision of the aerovalve core, but also can minimize the deformation of the aerovalve core. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model is an aerovalve core clamp structure of the preferred embodiment.

[0020] Figure 2 The structure diagram of the aviation valve core clamp of the preferred embodiment of the utility model is hidden after the second lower pull claw.

[0021] Figure 3 The partial structure enlarged view of the aviation valve core clamp of the preferred embodiment of the utility model.

[0022] Figure 4 The structure diagram of the first lower pull claw of the preferred embodiment of the utility model.

[0023] Figure 5 The structure diagram of the second lower pull claw of the preferred embodiment of the utility model.

[0024] Mark explanation:

[0025] Self-centering vice 1

[0026] Floating positioning block 2

[0027] Reference plane 21

[0028] Tool handle 3

[0029] Workpiece holding part 31

[0030] Connecting part 32

[0031] Guide inclined surface 321

[0032] Positioning groove 322

[0033] First lower pull claw 4

[0034] First main body 41

[0035] First pressing part 42

[0036] First pressing inclined surface 421

[0037] Second lower pull claw 5

[0038] Second main body 51

[0039] Second pressing part 52

[0040] Second pressing inclined surface 521

[0041] Angular positioning mechanism 6

[0042] Base 61

[0043] Positioning rod 62

[0044] Aviation valve core 7 Specific implementation

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and in no way should be taken as any limitation on the present application and its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0046] It should be noted that, in the claims and the specification of the patent, relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0047] As shown in Figures 1-5 The embodiment discloses an aviation valve core clamp, which comprises a self-centering vice 1, a floating positioning block 2, a tool holder 3, a first lower pull claw 4 and a second lower pull claw 5.

[0048] The self-centering vice 1 can ensure that one horizontal direction of the aviation valve core 7 is in the center.

[0049] The floating positioning block 2 is movably installed on the self-centering vice 1, and a reference plane 21 is arranged on the floating positioning block 2, wherein the reference plane 21 is specially treated to ensure that the surface is flat and does not have any protrusions or depressions, thereby providing a reliable positioning reference for the workpiece.

[0050] The tool holder 3 comprises an integrally formed workpiece holding part 31 and a connecting part 32, the workpiece holding part 31 is provided with an accommodating groove extending in the axial direction thereof, the accommodating groove is used for installing the aviation valve core 7, one end of the connecting part 32 is provided with a positioning plane, the positioning plane is perpendicular to the axis of the workpiece holding part 31, and the positioning plane is also a flat surface. The side wall of the connecting part 32 is provided with a guide inclined surface 321 inclined from inside to outside and inclined to the positioning plane (in the figure, the inclination is from right to left and from top to bottom). Figure 3

[0051] ​The first pull-down claw 4 comprises a first main body 41 and a first pressing portion 42. The first main body 41 is connected with the self-centering vice 1 and located at one side of the connecting portion 32. The first pressing portion 42 is provided with a first pressing inclined surface 421 capable of abutting against the guide inclined surface 321.

[0052] The second pull-down claw 5 comprises a second main body 51 and a second pressing portion 52. The second main body 51 is connected with the self-centering vice 1 and located at the other side of the connecting portion 32. The second pressing portion 52 is provided with a second pressing inclined surface 521 capable of abutting against the guide inclined surface 321.

[0053] In the embodiment, the tool shank 3 is placed on the floating positioning block 2 with the positioning plane in contact with the reference plane 21. The first pull-down claw 4 and the second pull-down claw 5 are controlled to move towards the connecting portion 32. After the first pressing inclined surface 421 and the second pressing inclined surface 521 abut against the guide inclined surface 321, the first pull-down claw 4 and the second pull-down claw 5 continue to move to jointly exert an action force on the connecting portion 32 to tightly abut the positioning plane against the reference plane 21.

[0054] Since the reference plane 21 and the positioning plane are both flat planes and the positioning plane is perpendicular to the axis of the workpiece holding portion 31, when the elongated rod-shaped aero valve core 7 is fixed in the accommodating groove, the axis of the aero valve core 7 is parallel to or coincides with the axis of the workpiece holding portion 31, thus ensuring that the axis of the aero valve core 7 is also perpendicular to the positioning plane. The structure of the workpiece holding portion 31 ensures that the aero valve core 7 does not shake during machining and is not deformed. Therefore, when the aero valve core 7 is clamped by the aero valve core clamp of the embodiment, the perpendicularity of the aero valve core 7 can be ensured and the deformation of the aero valve core 7 can be minimized.

[0055] Further, in the embodiment, the side wall of the connecting portion 32 is provided with a positioning groove 322. The aero valve core clamp further comprises an angular positioning mechanism 6. The angular positioning mechanism 6 comprises a base 61 and a positioning rod 62. The base 61 is mounted on the floating positioning block 2 and does not interfere with the abutting of the first pressing inclined surface 421 and the second pressing inclined surface 521 against the guide inclined surface 321. The positioning rod 62 is movably mounted on the base 61 and can be inserted into the positioning groove 322.

[0056] In the embodiment, the cooperation of the angular positioning mechanism 6 and the positioning groove 322 in the above structure can avoid the rotation of the tool shank 3 during machining, further improving the machining precision.

[0057] Further, in the embodiment, the inclination angle of the guide inclined surface 321 is 30°, and the inclination angle of the first pressing inclined surface 421 and the second pressing inclined surface 521 is 30°.

[0058] In this embodiment, the inclination angles of the guide slope 321, the first pressing slope 421 and the second pressing slope 521 are all set to 30°, ensuring the precise fit between the components of the clamp. The uniform angle design can ensure that the pressing slope can closely fit with the guide slope 321 during the clamping process, thereby achieving stable clamping of the connecting part 32 of the tool shank 3. The inclination angle of 30° enables the clamping force to be evenly distributed on both sides of the connecting part 32, avoiding uneven clamping force caused by inconsistent angles, thereby improving the stability and reliability of the clamp. Moreover, the inclination angle of 30° is optimized to provide sufficient clamping force during the clamping process, while reducing the required stroke for clamping and improving clamping efficiency

[0059] Further, in this embodiment, the number of positioning grooves 322 is two, and the number of angular positioning mechanisms 6 is two. Compared with one positioning groove 322 cooperating with one angular positioning mechanism 6, setting two sets of angular positioning mechanisms 6 cooperating with two positioning grooves 322 can further avoid the rotation of the tool shank 3 during machining, improving the positioning accuracy.

[0060] During machining, the tool shank 3 rotates. The tool shank 3 is an HSK tool shank. Clamping the aerovalve core 7 by using the workpiece clamping part of the HSK tool shank 3 can well ensure the integrity of the workpiece appearance, almost without clamping marks, ensuring the roughness of the aerovalve core 7.

Claims

1. An aircraft valve trim clamp, characterized by, The utility model relates to an aviation valve core clamp, comprising: A self-centering vice; A floating positioning block movably mounted on the self-centering vice, the floating positioning block being provided with a reference plane; A tool holder comprising a workpiece holding part and a connecting part, the workpiece holding part being provided with an accommodating groove extending along the axial direction thereof, the accommodating groove being used for mounting the aviation valve core, one end of the connecting part being provided with a positioning plane perpendicular to the axis of the workpiece holding part, the side wall of the connecting part being provided with a guide inclined surface inclined from inside to outside and towards the positioning plane; A first pull-down claw comprising a first main body and a first pressing part, the first main body being connected with the self-centering vice and located on one side of the connecting part, the first pressing part being provided with a first pressing inclined surface capable of abutting against the guide inclined surface; A second pull-down claw comprising a second main body and a second pressing part, the second main body being connected with the self-centering vice and located on the other side of the connecting part, the second pressing part being provided with a second pressing inclined surface capable of abutting against the guide inclined surface; Wherein, the tool holder is placed on the floating positioning block, the positioning plane is in contact with the reference plane, the first pull-down claw and the second pull-down claw are controlled to move towards the connecting part by the self-centering vice, after the first pressing inclined surface and the second pressing inclined surface abut against the guide inclined surface, the first pull-down claw and the second pull-down claw continue to move to jointly exert an action force on the connecting part to make the positioning plane tightly abut against the reference plane.

2. The aircraft spool clamp of claim 1, wherein, The side wall of the connecting part is provided with a positioning groove; The aviation valve core clamp further comprises an angular positioning mechanism, the angular positioning mechanism comprising a base and a positioning rod, the base being mounted on the floating positioning block and not interfering with the abutment of the first pressing inclined surface and the second pressing inclined surface against the guide inclined surface, the positioning rod being movably mounted on the base and capable of being inserted into the positioning groove.

3. The aircraft spool clamp of claim 1, wherein, The inclination angle of the guide inclined surface is 30°, and the inclination angle of the first pressing inclined surface and the second pressing inclined surface is 30°.

4. The aircraft spool clamp of claim 2, wherein, The number of the positioning grooves is two, and the number of the angular positioning mechanisms is two.

5. The aircraft spool clamp of claim 1, wherein, The tool holder adopts an HSK tool holder.

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