CN220006866U

CN220006866U - Clamp for numerical control machine tool

Info

Publication number: CN220006866U
Application number: CN202321188811.XU
Authority: CN
Inventors: 唐安才; 潘小红
Original assignee: Chengdu Penghua Technology Co ltd
Current assignee: Chengdu Penghua Technology Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-11-14
Anticipated expiration: 2033-05-17

Abstract

The utility model relates to a fixture for a numerical control machine tool, which comprises a bottom supporting seat detachably arranged on a working platform of the numerical control machine tool, wherein the bottom supporting seat comprises a mounting bottom plate, a working rack and a vertical supporting mechanism arranged in a cavity space defined by the bottom plate and the working rack, a supporting rod of the vertical supporting mechanism can penetrate through a top working surface of the working rack in an array layout mode to form and hold a curved plate body, and positioning holes in array arrangement are formed in the top working surface of the working rack; the workbench frame is also provided with an edge side clamping component capable of clamping and limiting the edge of the curved plate body, and the edge side clamping component is arranged on the outer side of the supporting rod in a mode of limiting the position of the curved plate body to be processed on the workbench frame. The method can limit the shape of the curved plate in the processing process, and avoid the plate from generating bad deformation in the processing process.

Description

Clamp for numerical control machine tool

Technical Field

The utility model relates to the technical field of plate machining fixtures, in particular to a fixture for a numerical control machine tool.

Background

The sheet material rough material with the curved surface profile is a part processing basic material commonly used in the production process of aircraft structural parts. At present, in order to mass-produce curved plate type parts with high-precision dimensional parameters, generally related manufacturing enterprises use numerical control machine tools capable of mass-precision machining to process and manufacture the curved plate type parts. The numerical control machine tool can automatically process the plate blank placed on the workbench into a curved plate type spare and accessory part with the shape and the size required by the drawing according to the drawing information input by operators.

Before the numerical control machine tool performs cutting and other processing treatments on the plate blank, the plate blank to be processed needs to be clamped and limited through the limiting device, so that the numerical control machine tool can perform accurate shape and size processing on the blank plate which is stable. However, the existing clamping fixture of the numerical control machine tool can only position the plate blank on the workbench of the numerical control machine tool in a mode of planar pressing clamping or edge abutting limiting of the edge plate body, however, in the machining process of an aircraft structural member, the selected plate blank usually has the shape of a curved surface profile, so that the plate blank cannot be machined and positioned by using a conventional fixture, particularly when machining is performed by using automation equipment such as the numerical control machine tool, large machining errors often occur in the blank which cannot be positioned effectively, and only the size of parts in production cannot meet actual production requirements. In addition, the edge limiting mode of the existing clamping fixture for the plate blank is to directly clamp with the flat plate clamp or to relatively set up the limiting plate body to be propped against and limited, and the deformation and damage of the plate are often caused under the condition of guaranteeing the limiting stability in the two modes, and when the cutting excess is a final product, the processing yield cannot meet the production requirement. Especially to the panel that has aircraft spare and accessory part production usefulness of curved surface profile, the stability of curved surface panel location can not be guaranteed to above-mentioned limit structure to the whole curved surface form of panel can't be protected, and the panel is very easily appeared plate body deformation in the atress and carries out the course of working, thereby influences the quality of production and processing.

Disclosure of Invention

The utility model aims to provide a fixture for a numerical control machine tool, which can effectively clamp and position a curved plate and can keep the shape of the curved plate in the processing process to avoid deformation caused by the stress of the plate, so as to solve the problems that the existing fixture for the numerical control machine tool cannot stably and nondestructively process and position and keep the shape of the curved plate used for producing aircraft parts, so that the curved plate is easy to deform in the processing process and the processing position deviation occurs along with the deformation of the plate in the processing process, and the production shape and size cannot meet the requirements of drawing.

The technical scheme adopted by the utility model is as follows: the fixture for the numerical control machine tool comprises a bottom supporting seat which is detachably arranged on a working platform of the numerical control machine tool, wherein the bottom supporting seat comprises an installation bottom plate, a working bench and a vertical supporting mechanism arranged in a cavity space defined by the bottom plate and the working bench, a supporting rod of the vertical supporting mechanism can penetrate through a top working surface of the working bench in an array layout mode to carry out multi-point position supporting on a curved plate body in a form retaining mode, and positioning holes which are arranged in an array are formed in the top working surface of the working bench; the workbench frame is also provided with an edge side clamping component capable of clamping and limiting the edge of the curved plate body, and the edge side clamping component is arranged on the outer side of the supporting rod in a mode of limiting the position of the curved plate body to be processed on the workbench frame.

According to a preferred embodiment, the vertical supporting mechanism further comprises a bar-shaped sliding shell, a limiting orifice plate and a limiting elastic piece, wherein the bar-shaped sliding shell, the limiting orifice plate and the limiting elastic piece are installed on the bottom surface of the working bench, the bar-shaped sliding shells are distributed on the bottom surface of the working bench at intervals in parallel, the limiting orifice plate is inserted into the bar-shaped sliding shells in a mode of being capable of translating along the axial direction of the bar-shaped sliding shells, and the limiting elastic piece limiting the initial relative position between the limiting orifice plate and the bar-shaped sliding shells is further arranged between the end part of the limiting orifice plate and the inner side surface of the end part of the bar-shaped sliding shells.

According to a preferred embodiment, the limiting orifice plates are further provided with a plurality of jacks capable of being inserted with the supporting rods at intervals, and the jacks on the same limiting orifice plate are arranged in a mode that the distance between adjacent holes is equal to the distance between adjacent holes of the same row of positioning holes formed in the working bench; the distances between the mutually parallel and adjacent strip-shaped sliding shells or the limiting hole plates are set in a mode of being equal to the adjacent hole site spacing of the same row of positioning holes, so that the working positions of the positioning holes defined by the strip-shaped sliding shells are arrayed in a mode of being identical to the arrangement spacing of the jacks.

According to a preferred embodiment, under the elastic limit of the limit elastic piece, hole position deviation exists between the jacks of the limit hole plates and the positioning holes, which are distributed correspondingly, so that the limit hole plates can limit the supporting height of the supporting rod in a mutually matched mode with the working bench.

According to a preferred embodiment, the side clamping assembly comprises a first clamping member, a second clamping member, a telescopic shaft rod and a locking member, wherein the first clamping member and the second clamping member are arranged on the top end of the telescopic shaft rod in a penetrating manner in parallel in a manner of forming a clamping body structure capable of clamping the edge of the curved plate in a clamping manner, and the second clamping member can translate along the axial direction of the telescopic shaft rod so as to change the distance of a clamping gap defined by two surfaces of the first clamping member and the second clamping member opposite to each other.

According to a preferred embodiment, the screw of the locking element is arranged in such a way as to extend through the first and second clamping elements, and the nut of the locking element is embedded in the plate of the first clamping element, the screw being connectable with the nut to define the distance between the first and second clamping elements.

According to a preferred embodiment, the upper surface of the first main plate body of the first clamping member is provided with a first mounting groove, a first air bag which can be expanded and extended from the opening at the upper end in the axial direction is accommodated in the first mounting groove, the lower surface of the second main plate body of the second clamping member is provided with a second mounting groove, and a second air bag which can be expanded and extended from the opening at the lower end in the axial direction is accommodated in the second mounting groove; when the distance between the first clamping piece and the second clamping piece is reduced, the first air bag and the second air bag which are close to each other elastically clamp and limit the curved plate in a mode that the first air bag and the second air bag are deformed to be attached to the edge profile of the curved plate.

According to a preferred embodiment, the first extension plate arranged on the outer side of the first installation slot and the second extension plate arranged on the outer side of the second installation slot can synchronously perform relative movement so as to rigidly clamp and limit the curved plate.

According to a preferred embodiment, the lower rod of the telescopic shaft is inserted into the cavity space in a manner penetrating through the top working surface of the working bench, and the lower axial end of the telescopic shaft is connected with a displacement mechanism arranged in the cavity space, and the displacement mechanism can drive the side clamping assembly to perform directional translation.

According to a preferred embodiment, a slot is provided in the top working surface of the work bench, defining the movable path of the telescopic shaft.

The beneficial effects of the utility model are as follows:

according to the utility model, the vertical supporting mechanism can support the curved plate in a multi-point supporting mode by arranging the supporting rods with adjustable heights and arrayed arrangement, so that the form of the curved plate in the cutting processing process is limited, the auxiliary curved plate always keeps a stable form, the deformation of the plate body of the curved plate caused by cutting and pressing is avoided, and therefore, the processing precision of equipment is improved, and the produced product is ensured to have a qualified shape and size.

According to the utility model, the air bag limiting structure which can adapt to the surface profile of the curved plate is arranged to limit the protection form of the curved plate, so that the curved plate can be effectively limited and simultaneously can be prevented from being extruded and deformed at the clamped position, and particularly, the curved form of the edge plate body can be effectively maintained under the attached limiting state of the air bag, so that the processed curved plate still has the original surface profile, and the bad deformation of the plate caused by the limiting clamping of the clamping structure is avoided, thereby improving the processing quality.

Drawings

Fig. 1 is a schematic structural view of a preferred fixture for a numerical control machine tool according to the present utility model;

FIG. 2 is a schematic view of a part of a vertical supporting mechanism of a fixture for a numerical control machine tool according to a preferred embodiment of the present utility model;

FIG. 3 is a schematic view of a part of a side clamping assembly of a preferred fixture for a numerical control machine tool according to the present utility model;

FIG. 4 is a schematic plan view of a limiting orifice plate of a preferred fixture for a numerical control machine tool according to the present utility model;

fig. 5 is a schematic plan view of a working table of a fixture for a numerical control machine tool according to a preferred embodiment of the present utility model.

List of reference numerals

1: a bottom support base; 2: a displacement mechanism; 3: side clamping components; 11: a mounting base plate; 12: a work bench; 13: a vertical support mechanism; 21: translating the shaft lever; 22: rotating the support plate; 23: a driving motor; 31: a first clamping member; 32: a second clamping member; 33: a telescopic shaft lever; 34: a capture; 121: positioning holes; 122: slotting; 131: a support rod; 132: a bar-shaped sliding shell; 133: a limiting orifice plate; 134: a limit elastic piece; 135: a jack; 136: a pipe sleeve; 311: a first main board body; 312: a first mounting slot; 313: a first air bag; 314: a first extension plate; 321: a second main board body; 322: a second mounting slot; 323: a second air bag; 324: a second extension plate; 341: a screw; 342: and (3) a nut.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

The technical solution provided by the present utility model will be described in detail by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present utility model, but is not intended to limit the present utility model. In some instances, some embodiments are not described or described in detail as such, as may be known or conventional in the art.

Furthermore, features described herein, or steps in all methods or processes disclosed, may be combined in any suitable manner in one or more embodiments in addition to mutually exclusive features and/or steps. It will be readily understood by those skilled in the art that the steps or order of operation of the methods associated with the embodiments provided herein may also be varied. Any order in the figures and examples is for illustrative purposes only and does not imply that a certain order is required unless explicitly stated that a certain order is required.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein, where appropriate (without making up a paradox), include both direct and indirect connections (couplings).

The following detailed description refers to the accompanying drawings.

Example 1

The utility model provides a fixture for a numerical control machine tool, which comprises a bottom supporting seat 1, a shifting mechanism 2 and an edge clamping assembly 3.

According to one specific embodiment shown in fig. 1-5, the bottom support 1 can be removably mounted on the table of a numerically controlled machine tool by means of positioning bolts. The shifting mechanism 2 is arranged inside the bottom supporting seat 1 so as to prevent fragments generated by the plate blank above the bottom supporting seat 1 in the processing process from entering the constructed transmission displacement structure, thereby solving the problem of abnormal operation and ensuring the cleanliness of the transmission displacement structure. The displacement mechanism 2 also penetrates through the bottom working surface of the bottom support seat 1 and is connected with the side clamping assembly 3, so that the position on the bottom support seat 1 on the side clamping assembly 3 is limited. The shifting mechanism 2 can drive the different side clamping assemblies 3 to translate in different directions, so that the plurality of side clamping assemblies 3 on the bottom supporting seat 1 can clamp and limit curved surface plates with different sizes.

Preferably, the bottom support 1 comprises a mounting base plate 11, a work bench 12 and a vertical support mechanism 13. Specifically, the mounting base plate 11 is a plate body provided with positioning screw holes, and can directly position and mount the fixture tool on a workbench of the numerical control machine tool. Preferably, a work bench 12 is supported above the mounting base plate 11. The work bench 12 defines together with the base plate 11 a chamber space accommodating the vertical support mechanism 13, and the body part of the displacement mechanism 2 is also arranged in this chamber space. Preferably, the work bench 12 includes support columns and a work surface fixedly supported on the base plate 11. The working table is supported on a certain height plane by a support column. Specifically, the supporting rods 131 of the vertical supporting mechanism 13 can penetrate through the top working surface of the working bench 12 in an array layout manner to perform multi-point supporting for the shape retention of the curved plate body, that is, the vertical supporting mechanism 13 can penetrate through the top working surface of the working bench 12, so that the upper axial end of the vertical supporting mechanism 13 can define a supporting structure with a special-shaped profile above the working bench 12, and therefore the curved plate to be processed can be effectively supported in multiple points, and the vertical supporting mechanism 13 can effectively prevent the curved plate from being deformed by compression during the compression processing of the curved plate. Further preferably, the top working surface of the working bench 12 is provided with positioning holes 121 arranged in an array. Part of the rod body of the support rod 131 of the vertical support mechanism 13 extends to the upper space of the table frame 12 through the positioning hole 121.

As shown in fig. 2 and 4, the vertical support mechanism 13 includes a support bar 131, a bar-shaped slide case 132, a limiting orifice plate 133, and a limiting elastic member 134. Specifically, a plurality of bar-shaped slide cases 132 are installed at intervals on the bottom surface of the table frame 12, and adjacent bar-shaped slide cases 132 are laid parallel to each other. Preferably, the limiting orifice plate 133 is inserted into the bar-shaped sliding housing 132 in a manner of being capable of translating along the axial direction of the bar-shaped sliding housing 132, and a part of the plate body of the limiting orifice plate 133 is disposed outside the housing cavity defined by the bar-shaped sliding housing 132. Preferably, the limiting orifice plate 133 is capable of sliding along the axial direction of the bar-shaped sliding housing 132, and the length of the limiting orifice plate 133 is greater than that of the bar-shaped sliding housing 132, such that a portion of the plate body thereof extends to the outside of the bar-shaped sliding housing 132 through one axial end portion of the bar-shaped sliding housing 132. Preferably, a limiting elastic member 134 for limiting an initial relative position between the limiting orifice plate 133 and the bar-shaped sliding housing 132 is provided between an inner side surface of the other axial end portion of the bar-shaped sliding housing 132, which is not penetrated, and an insertion front end of the limiting orifice plate 133. The two ends of the limiting elastic member 134 are respectively connected with the limiting orifice plate 133 and the bar-shaped sliding shell 132, so as to limit the initial working position of the limiting orifice plate 133 in the bar-shaped sliding shell 132.

Preferably, a plurality of insertion holes 135 into which the support rods 131 can be inserted are further provided at intervals on the limiting orifice plate 133. The plurality of insertion holes 135 on the same limiting orifice plate 133 are arranged in such a manner that the distance between adjacent insertion holes is equal to the distance between adjacent insertion holes of the same row of positioning holes 121 formed in the table frame 12. Further preferably, the distances between the mutually parallel and adjacent bar-shaped sliding shells 132 or the limiting orifice plates 133 are arranged in a manner equal to the adjacent hole site spacing of the same row of positioning holes 121, so that the working positions of the positioning holes 121 defined by the plurality of bar-shaped sliding shells 132 are arranged in an array manner in the same manner as the arrangement spacing of the insertion holes 135. The above arrangement is to make the plurality of insertion holes 135 arranged in an array formed by the plurality of limiting hole plates 133 correspond to the positioning holes 121 in position, so that the two insertion holes can be in one-to-one correspondence under the control of an operator. In addition, the positioning hole 121 and the insertion hole 135 may also have a certain deviation of misalignment, so that the positioning hole 121 and the insertion hole 135 of the difference can define the positions of the support rods 131 inserted into both holes at the same time, so that the support rods 131 cannot be axially displaced in the positioning hole 121 and the insertion hole 135. Preferably, the positioning hole 121 has a smaller aperture than the insertion hole 135, and a socket 136 capable of increasing the contact area with the support rod 131 is further provided in the insertion hole 135. Preferably, under the elastic limit of the limiting elastic piece 134, a hole position deviation exists between the insertion holes 135 and the positioning holes 121 of the limiting hole plates 133 distributed correspondingly to each other, so that the supporting height of the supporting rod 131 can be limited by the limiting hole plates 133 in cooperation with the working bench 12. When the limiting hole plate 133 receives the lateral translation force under the action of the elastic force of the limiting elastic member 134 and the hole level difference is forced to occur between the insertion hole 135 and the positioning hole 121, the sleeve 136 forces the support rod 131 to be effectively limited by applying an abutting force to the support rod 131 in the direction perpendicular to the axial direction of the support rod 131, so that the axial translation cannot occur between the insertion hole 135 and the positioning hole 121, and a plurality of support rods 131 can define a supporting surface above the workbench 12.

Preferably, the support rods 131 are selectively protruded upward, so that a plurality of support rods 131 arranged in an array adjustably construct a support profile using a part of or all of the unit rods. In order to meet the requirement of the numerically-controlled machine tool for cutting, the supporting points of the supporting rods 131 are distributed so as to avoid the cutting path, so that only part of the supporting rods 131 are arranged in the process of actually building the supporting structure, and the positioning holes 121 extend upwards to form the supporting points. Preferably, in use, the operator pushes the limiting orifice plate 133 to translate axially so that the holes of the insertion holes 135 and the positioning holes 121 are completely overlapped, so that the insertion holes 135 and the positioning holes 121 do not apply a transverse staggered limiting force to the support rods 131, and thus the support rods 131 can move axially along the support rods under the active adjustment action of the operator, so that the support rods 131 in the same column of insertion holes 135 defined by the limiting orifice plate 133 define a specific support height, preferably, the support rods 131 in the same column of insertion holes 135 are subjected to synchronous height adjustment operation at one time, but the height data adjusted by each support rod 131 is different, and is mainly subjected to height adjustment according to the support height requirements required by different points of the curved plate. After the height adjustment is completed, the external force to the limiting orifice plate 133 is released, and the limiting orifice plate 133 translates at the limiting elastic member 134, so that the insertion hole 135 and the positioning hole 121 are dislocated, and the position of the support bar 131 is defined. Preferably, the position of the curved plate on the working bench 12 can be limited by the side clamping assembly 3 before the support height is adjusted, and then the support rods 131 are moved upwards to contact with the bottom surface of the curved plate by adjusting the support height of the support rods 131, so that the support rods 131 arranged in an array can maintain the curved profile of the curved plate in a multi-point support mode. Preferably, the number of the supporting points may be selected according to the requirement of supporting strength, so that the plurality of supporting rods 131 provided in the single row of the insertion holes 135 can meet the supporting requirement only by partially adjusting the positions. According to the utility model, the vertical supporting mechanism 13 can support the curved plate in a multi-point supporting mode by arranging the supporting rods 131 with adjustable height and arrayed, so that the form of the curved plate in the cutting process is limited, the curved plate is assisted to always maintain a stable form, the deformation of the plate body caused by cutting and pressing is avoided, the processing precision of equipment is improved, and the qualified shape and size of the produced product are ensured.

As shown in fig. 5, a slot 122 defining a movable path of the telescopic shaft 33 is opened on the top working surface of the work bench 12, and the slot 122 and the axis of the translation shaft 21 of the displacement mechanism 2 are parallel to each other.

Preferably, the displacement mechanism 2 provided in the chamber space comprises a translation shaft 21, a rotation support plate 22 and a drive motor 23. In particular, the rotation support plate 22 defines the position of the translation shaft 21 in the chamber space, so that two translation shafts 21 in different planes can be mutually perpendicular. Preferably, two spaced rotating support plates 22 define the position of the same translation shaft 21, and a sliding rod capable of defining the movement state of an orientation translation block sleeved on the translation shaft 21 is also provided between the two rotating support plates 22. The directional translation block is sleeved on the translation shaft rod 21 and the sliding rod, so that the directional translation block can translate along the axial direction of the translation shaft rod 21 under the condition that the translation shaft rod 21 is driven by the driving motor 23. Preferably, threads with opposite spiral directions at two ends are arranged on the translation shaft rod 21, so that rotation of the translation shaft rod can drive the two directional translation blocks to move in opposite directions or back to back, and therefore the side clamping assemblies 3 supported by the positioning translation blocks can change the distance between the two side clamping assemblies 3 positioned at two sides of the curved plate through the opposite movements or back to back, and the side clamping assemblies 3 can effectively clamp the edges of the curved plate with different sizes.

Preferably, the workbench 12 is further provided with an edge side clamping assembly 3 capable of clamping and limiting the edge of the curved plate body, and the edge side clamping assembly 3 is arranged on the outer side of the supporting rod 131 in a mode of limiting the position to be processed of the curved plate body on the workbench 12. As shown in fig. 3, the side detent assembly 3 includes a first clamp 31, a second clamp 32, a telescopic shaft 33, and a lock piece 34. Specifically, the first clamping member 31 and the second clamping member 32 are inserted into the distal end of the same telescopic shaft 33 so as to form a clamp structure capable of clamping the edge of the curved plate. The first clamping member 31 and the second clamping member 32 are parallel to each other, and the second clamping member 32 is translatable in the axial direction of the telescopic shaft 33 to change the distance of the clamping gap defined by the two surfaces of the first clamping member 31 opposite the second clamping member 32. Further preferably, the screw 341 of the locking member 34 is disposed to penetrate the first and second clamping members 31 and 32, and the nut 342 of the locking member 34 is embedded in the plate body of the first clamping member 31, and the screw 341 can be connected with the nut 342 to define the distance between the first and second clamping members 31 and 32. When the curved plate is installed, the distance between the first clamping piece 31 and the second clamping piece 32 is changed by rotating the screw 341, so that the two can effectively and stably clamp the edge of the curved plate inserted between the two.

Preferably, the first main plate body 311 of the first clamping member 31 is provided at an upper surface thereof with a first mounting groove 312, and the first mounting groove 312 is internally accommodated with a first balloon 313 which is expandable from an axially upper end opening thereof. Further preferably, the lower surface of the second main plate body 321 of the second clamp 32 is provided with a second mounting groove 322, and the second mounting groove 322 accommodates therein a second airbag 323 that can be inflated and expanded from its axially lower end opening. Specifically, when the distance between the first clamping member 31 and the second clamping member 32 becomes smaller, the first air bag 313 and the second air bag 323, which are close to each other, elastically clamp and limit the curved plate material so as to be deformed to be attached to the edge profile of the curved plate material. Preferably, the shielding surfaces of the first air bag 313 and the second air bag 323 facing the first mounting slot 312 and the second mounting slot 322 respectively are all in limit connection through an adhesion piece. Preferably, the adhesive member may be an adhesive dot or the like having a double-sided adhesive layer. Further preferably, the first extension plate 314 disposed on the outer side of the first mounting slot 312 and the second extension plate 324 disposed on the outer side of the second mounting slot 322 are capable of performing synchronous relative movement to rigidly clamp and limit the curved plate. According to the utility model, the air bag limiting structure which can adapt to the surface profile of the curved plate is arranged to limit the protection form of the curved plate, so that the curved plate can be effectively limited and simultaneously can be prevented from being extruded and deformed at the clamped position, and particularly, the curved form of the edge plate body can be effectively maintained under the attached limiting state of the air bag, so that the processed curved plate still has the original surface profile, and the bad deformation of the plate caused by the limiting clamping of the clamping structure is avoided, thereby improving the processing quality.

The lower rod body of the axis of the telescopic shaft rod 33 is inserted into the cavity space in a manner of penetrating through the top working surface of the workbench 12, the lower axial end of the telescopic shaft rod 33 is connected with the shifting mechanism 2 arranged in the cavity space, and the shifting mechanism 2 can drive the side clamping assembly 3 to conduct directional translation so as to clamp the edges of curved plates with different sizes. Preferably, the locking piece 34 may be provided in plurality, thereby ensuring stable clamping of the first clamping piece 31 and the second clamping piece 32. Preferably, the telescopic shaft 33 is a shaft that is capable of length telescopic adjustment, so that it can adjust its own length according to the actual support height requirements. Preferably, at least four telescopic shafts 33 are separately arranged on the top working surface of the workbench frame 12, so that the four telescopic shafts can clamp and limit four edge plate bodies in different directions of the curved plate, and the effectiveness of limiting is ensured.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the utility model is defined by the claims and their equivalents. Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.

Claims

1. The fixture for the numerical control machine tool comprises a bottom supporting seat (1) which is detachably arranged on a working platform of the numerical control machine tool, and is characterized in that,

the bottom supporting seat (1) comprises a mounting bottom plate (11), a working bench (12) and a vertical supporting mechanism (13) arranged in a cavity space defined by the bottom plate (11) and the working bench (12),

the supporting rods (131) of the vertical supporting mechanism (13) can penetrate through the top working surface of the working bench (12) in an array layout mode to carry out multi-point position supporting on the shape of the curved plate body, wherein positioning holes (121) which are arranged in an array are formed in the top working surface of the working bench (12);

the workbench frame (12) is further provided with an edge side clamping component (3) capable of clamping and limiting the edge of the curved plate body, and the edge side clamping component (3) is arranged on the outer side of the supporting rod (131) in a mode of limiting the position of the curved plate body to be processed on the workbench frame (12).

2. The fixture for numerical control machine tool according to claim 1, wherein the vertical supporting mechanism (13) further comprises a bar-shaped slide case (132), a limiting orifice plate (133) and a limiting elastic member (134), wherein a plurality of the bar-shaped slide cases (132) are arranged on the bottom surface of the work bench (12) at intervals in parallel,

the limiting orifice plate (133) is inserted into the strip-shaped sliding shell (132) in a manner of being capable of translating along the axial direction of the strip-shaped sliding shell (132), and a limiting elastic piece (134) for limiting the initial relative position between the limiting orifice plate (133) and the strip-shaped sliding shell (132) is further arranged between the end part of the limiting orifice plate (133) and the inner side surface of the end part of the strip-shaped sliding shell (132).

3. The fixture for the numerical control machine tool according to claim 2, characterized in that the limiting orifice plates (133) are further provided with a plurality of insertion holes (135) capable of inserting the supporting rods (131) at intervals, and the plurality of insertion holes (135) on the same limiting orifice plate (133) are arranged in such a manner that the distance between adjacent insertion holes is equal to the distance between adjacent insertion holes of the same row of positioning holes (121) formed on the work bench (12);

the distances between the mutually parallel and adjacent strip-shaped sliding shells (132) or the limiting hole plates (133) are arranged in a mode of being equal to the distance between adjacent hole positions of the same row of positioning holes (121), so that the working positions of the positioning holes (121) defined by the strip-shaped sliding shells (132) are arrayed in the same mode as the arrangement distance of the jacks (135).

4. A fixture for a numerical control machine tool according to claim 3, wherein under the elastic force limitation of the limiting elastic member (134), hole position deviation exists between the insertion holes (135) of the limiting hole plates (133) and the positioning holes (121) which are distributed correspondingly to each other, so that the limiting hole plates (133) can limit the supporting height of the supporting rod (131) in cooperation with the work bench (12).

5. The fixture for a numerical control machine tool according to claim 4, wherein the side clamping assembly (3) comprises a first clamping member (31), a second clamping member (32), a telescopic shaft (33) and a locking member (34), wherein,

the first clamping piece (31) and the second clamping piece (32) are arranged on the top end of the same telescopic shaft rod (33) in a penetrating mode in parallel in a clamping body structure mode capable of clamping the edge of the curved plate in a clamping mode, and the second clamping piece (32) can translate along the axial direction of the telescopic shaft rod (33) so as to change the distance of a clamping gap defined by two opposite surfaces of the first clamping piece (31) and the second clamping piece (32).

6. The numerical control machine tool clamp according to claim 5, characterized in that a screw (341) of the locking member (34) is provided so as to penetrate the first clamping member (31) and the second clamping member (32), and a nut (342) of the locking member (34) is embedded in a plate body of the first clamping member (31), the screw (341) being connectable with the nut (342) to define a distance between the first clamping member (31) and the second clamping member (32).

7. The numerical control machine tool fixture according to claim 6, wherein the upper surface of the first main plate body (311) of the first clamp member (31) is provided with a first mounting groove (312), the first mounting groove (312) is internally provided with a first airbag (313) capable of expanding from an axially upper end opening thereof,

the lower surface of a second main board body (321) of the second clamping piece (32) is provided with a second mounting groove (322), and a second air bag (323) which can expand and extend from the opening at the lower end in the axial direction is accommodated in the second mounting groove (322);

when the distance between the first clamping piece (31) and the second clamping piece (32) is reduced, the first air bag (313) and the second air bag (323) which are mutually close elastically clamp and limit the curved plate in a mode that the first air bag and the second air bag are deformed to be attached to the edge contour of the curved plate.

8. The jig for numerical control machine tool according to claim 7, wherein the first extension plate (314) provided on the outer side of the first mounting groove (312) and the second extension plate (324) provided on the outer side of the second mounting groove (322) are capable of performing a synchronous relative movement to rigidly hold and limit the curved plate.

9. The jig for numerical control machine tool according to claim 8, characterized in that the lower axial rod body of the telescopic rod (33) is inserted into the cavity space so as to penetrate through the top working surface of the table frame (12), and the lower axial end of the telescopic rod (33) is connected with a displacement mechanism (2) placed in the cavity space, and the displacement mechanism (2) can drive the side clamping assembly (3) to perform directional translation.

10. The jig for numerical control machine tool according to claim 9, characterized in that a slot (122) defining a movable path of the telescopic shaft (33) is opened on a top working surface of the work bench (12).