Processing contour constraint mechanism

Abstract

The present invention provides a machining contour constraint mechanism, which relates to the technical field of contour machining. The machining contour constraint mechanism provided by the present invention includes: a functional frame and a base; the functional frame is used for installing functional devices; the functional frame is movably connected to the base, and the functional frame has degrees of freedom of movement extending respectively in a first direction and a second direction, and the first direction and the second direction form an included angle. The machining contour constraint mechanism provided by the present invention alleviates the technical problem of poor stability in contour machining in the prior art and can improve the stability of functional devices.

Description

Technical Field

[0001] The present invention relates to the technical field of contour machining, and particularly to a machining contour constraint mechanism. Background Art

[0002] During the mechanical machining process, it is usually necessary to polish, engrave, or cut along the contour of the workpiece. If a hand-held tool is used for machining, due to the poor hand-held stability, it is difficult to ensure the machining accuracy. In addition, during machining, it is necessary to polish, engrave, or cut according to a certain size and shape, and it is difficult to ensure the accuracy of the machining contour by using a hand-held tool. Summary of the Invention

[0003] The purpose of the present invention is to provide a machining contour constraint mechanism to alleviate the technical problem of poor stability in contour machining in the prior art.

[0004] In a first aspect, the machining contour constraint mechanism provided by the present invention includes: a functional frame and a base; the functional frame is used for installing functional devices; the functional frame is movably connected to the base, and the functional frame has degrees of freedom of movement extending respectively along a first direction and a second direction, and the first direction and the second direction form an included angle.

[0005] In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein a polar coordinate swing arm is movably connected to the base, and the functional frame is movably connected to the polar coordinate swing arm.

[0006] In combination with the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the polar coordinate swing arm is provided with a first sliding portion, and the functional frame has a degree of freedom of movement along the first sliding portion.

[0007] In combination with the second possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the functional frame is pivotally connected to the first sliding portion through a first movable member.

[0008] In combination with the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein a radial limit component is provided on the polar coordinate swing arm; the radial limit component is used for limiting the movement stroke of the functional frame along the first sliding portion, or for locking the pivotal connection position of the functional frame on the first sliding portion.

[0009] Combined with the first possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein a coordinate disk is rotatably connected to the base, and the polar coordinate swing arm is movably connected to the coordinate disk; the coordinate disk is configured to change the connection position between the polar coordinate swing arm and the coordinate disk by rotation, and / or the coordinate disk is configured to adjust the extending direction of the moving degree of freedom of the polar coordinate swing arm relative to the coordinate disk by rotation.

[0010] Combined with the fifth possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein a second sliding portion is provided on the coordinate disk, and the polar coordinate swing arm has a moving degree of freedom along the second sliding portion.

[0011] Combined with the sixth possible implementation manner of the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the second sliding portion extends along the radial direction of the coordinate disk.

[0012] Combined with the sixth possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the polar coordinate swing arm is pivotally connected to the second sliding portion through a second movable member.

[0013] Combined with the eighth possible implementation manner of the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein a pointer disk is pivotally connected to the second movable member; a first angle scale line is provided on the pointer disk, and / or a second angle scale line is provided on the base.

[0014] Combined with the first possible implementation manner of the first aspect, the present invention provides a tenth possible implementation manner of the first aspect, wherein a polar angle limiting component is provided on the base, and the polar angle limiting component is configured to limit the movement stroke of the polar coordinate swing arm.

[0015] In a second aspect, the present invention provides a machining profile constraint method, including: a straight-line machining condition and an arc machining condition.

[0016] In a second aspect, the present invention provides a machining profile constraint method, including: a straight-line machining condition and an arc machining condition.

[0017] In the straight-line machining working condition: adjust the extending direction of the polar coordinate swing arm and lock the polar coordinate swing arm; operate the function frame to move along the extending direction of the polar coordinate swing arm.

[0018] In the arc machining working condition: adjust the position of the first movable member on the polar coordinate swing arm and lock the first movable member; operate the polar coordinate swing arm to swing around the second movable member, thereby driving the function frame to move.

[0019] The embodiments of the present invention bring the following beneficial effects: The function device is installed on the function frame. The function frame is movably connected to the base, and the function frame has moving degrees of freedom extending along the first direction and the second direction respectively. The base supports the function frame and enables the function frame to move along the first direction and the second direction respectively. Thus, not only can the function device be operated for contour machining, but also the stability of the function device is improved by the cooperation of the function frame and the base.

[0020] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the slider of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0024] Figure 3 Cross-sectional view of the polar coordinate swing arm and the first movable member of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0025] Figure 4 Cross-sectional view of the polar coordinate swing arm and the first radius vector limiting member of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the first radius vector limiting member of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the coordinate disk of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the second moving part of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the base and the polar angle limit assembly of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0030] Figure 9 Schematic diagram of the first polar angle limit part of the machining contour constraint mechanism provided by the embodiment of the present invention;

[0031] Figure 10 Cross-sectional view of the clamping assembly of the machining contour constraint mechanism provided by the embodiment of the present invention.

[0032] Icon: 100 - functional frame; 101 - slider; 200 - base; 210 - substrate; 211 - turntable groove; 212 - annular groove; 220 - slide rail; 300 - polar coordinate swing arm; 301 - first sliding part; 400 - first moving part; 410 - first shaft rod part; 420 - first block; 421 - first opening groove; 500 - radius limit assembly; 510 - first radius limit part; 511 - radius limit block; 512 - screw; 513 - second opening groove; 520 - second radius limit part; 600 - coordinate disk; 601 - second sliding part; 700 - second moving part; 710 - second shaft rod part; 720 - second block; 721 - third opening groove; 800 - pointer disk; 900 - polar angle limit assembly; 910 - first polar angle limit part; 911 - stop post; 912 - second block; 920 - second polar angle limit part; 110 - clamping assembly; 011 - clamping area; 012 - insertion area; 111 - clamping seat; 112 - first slider; 113 - second slider; 114 - fastening member; 115 - force dividing member. Detailed implementation manners

[0033] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. For the physical quantities in the formula, if not separately marked, they should be understood as the basic quantities of the basic units of the International System of Units, or the derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] As Figure 1 shown, the machining profile constraint mechanism provided by the embodiment of the present invention includes: a functional frame 100 and a base 200; the functional frame 100 is used to install functional devices; the functional frame 100 is movably connected to the base 200, and the functional frame 100 has degrees of freedom of movement extending along a first direction and a second direction respectively, and the first direction and the second direction form an angle. Among them, the angle between the first direction and the second direction is 90 degrees. The base 200 supports the functional frame 100 and enables the functional frame 100 to move along the first direction and the second direction respectively, so that the functional device can be translated for profile machining, which is more stable than operating the functional device by hand.

[0038] As Figure 1 and Figure 2As shown, the functional device uses an electric grinding head or a cutting tool head, and the functional device is installed on the functional frame 100. The base 200 includes: a substrate 210 and a slide rail 220 connected to the substrate 210. The functional frame 100 is movably connected to the slide rail 220 through a slider 101. The slider 101 is provided with a first chute and a second chute. The functional frame 100 is slidably connected within the first chute, and the slide rail 220 is slidably connected to the second chute. The extending direction of the functional frame 100 is perpendicular to the extending direction of the slide rail 220. When the functional frame 100 moves along the first chute, the functional frame 100 can move freely along the first direction; when the slider 101 moves along the second chute, the functional frame 100 can move freely along the second direction.

[0039] In the embodiment of the present invention, a polar coordinate swing arm 300 is movably connected to the base 200, and the functional frame 100 is movably connected to the polar coordinate swing arm 300. Specifically, the functional frame 100 is hinged to the polar coordinate swing arm 300, and the polar coordinate swing arm 300 is pivotally connected to the base 200. By swinging the polar coordinate swing arm 300, the functional frame 100 can be driven to move, thereby realizing circular arc contour machining; alternatively, the functional frame 100 is slidably connected to the polar coordinate swing arm 300, so that the functional frame 100 can slide along the extending direction of the polar coordinate swing arm 300. Operating the functional frame 100 to slide along the polar coordinate swing arm 300 can realize contour machining in a straight line direction. A scale is added to the polar coordinate swing arm 300 to measure the length of contour machining. The polar coordinate swing arm 300 is pivotally connected or slidably connected to the base 200, so that the inclination angle or the extending length of the contour machining can be changed.

[0040] As Figure 1 and Figure 3 shown, the polar coordinate swing arm 300 is provided with a first sliding portion 301, and the functional frame 100 has a degree of freedom of movement along the first sliding portion 301.

[0041] In some embodiments, the first sliding portion 301 can adopt a chute or a guide rail. The functional frame 100 is fitted to the first sliding portion 301, and the functional frame 100 can slide along the first sliding portion 301. Operating the functional frame 100 to move along the first sliding portion 301 can make the functional device installed on the functional frame 100 move in a straight line for a certain distance.

[0042] In this embodiment, the functional frame 100 is pivotally connected to the first sliding part 301 through the first movable part 400. Among them, the first movable part 400 is slidably connected to the first sliding part 301, keeping the position of the first movable part 400 on the first sliding part 301 unchanged. The polar coordinate swing arm 300 pivotally connected to the base 200 can drive the functional frame 100 to move, so that the functional device moves along an arc curve, realizing the processing of the arc contour. Keeping the included angle between the polar coordinate swing arm 300 and the functional frame 100 fixed, operating the functional frame 100 to slide along the first sliding part 301, so that the functional device can move linearly, and then realizing the processing of the contour of a line segment of a certain length.

[0043] Further, the first sliding part 301 adopts a first dovetail groove. The first movable part 400 includes: a first shaft rod part 410 and a first block 420 adapted to the first dovetail groove. The first block 420 is inserted into the first dovetail groove, and the first shaft rod part 410 can slide along the extending direction of the first sliding part 301.

[0044] Further, a first opening groove 421 is provided on the first block 420. The first block 420 is in interference fit in the first dovetail groove. Under the extrusion of the inner side wall of the first dovetail groove, the opening degree of the first opening groove 421 is reduced, and the first opening groove 421 has a tendency to increase the opening degree by rebounding, so that the first block 420 is tightly fitted in the first dovetail groove. When the first block 420 slides to any position in the first dovetail groove, the first block 420 is tightened in the first dovetail groove, thus preventing the first movable part 400 from loosening in the first sliding part 301.

[0045] As Figure 1 、 Figure 3 、 Figure 4 and Figure 5 shown, a radius limit component 500 is provided on the polar coordinate swing arm 300; the radius limit component 500 is used to limit the moving stroke of the functional frame 100 along the first sliding part 301, or to lock the pivotal connection position of the functional frame 100 on the first sliding part 301.

[0046] In some embodiments, the radius limit component 500 adopts a screw, and the screw is connected to the first movable part 400 in a mating manner and abuts against the radius limit component 500. By tightening the screw, the first movable part 400 can be fixed at any position on the first sliding part 301.

[0047] In this embodiment, the radius limiting assembly 500 includes a first radius limiting member 510 and a second radius limiting member 520. The first radius limiting member 510 and the second radius limiting member 520 are respectively connected to the polar coordinate swing arm 300. The first movable member 400 is located between the first radius limiting member 510 and the second radius limiting member 520 and is clamped and fixed by the first radius limiting member 510 and the second radius limiting member 520, or the moving stroke of the first movable member 400 is limited by the first radius limiting member 510 and the second radius limiting member 520. Among them, both the first radius limiting member 510 and the second radius limiting member 520 include a radius limiting block 511 and a screw 512. The radius limiting block 511 is provided with a threaded hole adapted to the screw 512, and the radius limiting block 511 is further provided with a second opening groove 513 communicating with the threaded hole. The second opening groove 513 divides the radius limiting block 511 into a first insertion portion and a second insertion portion, and the threaded hole is located on the first insertion portion. The screw 512 is cooperatively connected to the threaded hole, and the screw 512 abuts against the second insertion portion. By tightening the screw 512, the opening degree of the second opening groove 513 can be increased; by loosening the screw 512, the opening degree of the second opening groove 513 can be reduced by springback. By adjusting the distance between the first radius limiting member 510 and the second radius limiting member 520, the first movable member 400 can be moved a certain distance along the first sliding portion 301.

[0048] As Figure 1 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 shown, a coordinate disk 600 is rotatably connected to the base 200, and the polar coordinate swing arm 300 is movably connected to the coordinate disk 600; the coordinate disk 600 is used to change the connection position between the polar coordinate swing arm 300 and the coordinate disk 600 by rotation, and / or the coordinate disk 600 is used to adjust the extending direction of the moving degree of freedom of the polar coordinate swing arm 300 relative to the coordinate disk 600 by rotation.

[0049] In some embodiments, the polar coordinate swing arm 300 is hinged to the coordinate disk 600, so that the polar coordinate swing arm 300 swings to drive the functional frame 100, and then drives the functional device to perform arc profile machining.

[0050] In this embodiment, a turntable groove 211 is provided on the substrate 210, and the coordinate disk 600 is inserted into the turntable groove 211, and the coordinate disk 600 can rotate around its own axis. By rotating the coordinate disk 600, the hinged position of the polar coordinate swing arm 300 on the coordinate disk 600 can be changed.

[0051] Further, a second sliding portion 601 is provided on the coordinate disk 600, and the polar coordinate swing arm 300 has a degree of freedom of movement along the second sliding portion 601. Among them, the polar coordinate swing arm 300 moves along the second sliding portion 601, so that the position of the polar coordinate swing arm 300 can be changed, and further the position of the function frame 100 can be adjusted, thereby changing the processing position of the functional device. In addition, the coordinate disk 600 rotates around its own axis, so that the extending direction of the second sliding portion 601 can be changed, and further the extending direction of the movement degree of freedom of the polar coordinate swing arm 300 relative to the coordinate disk 600 can be adjusted. If the hinged position of the polar coordinate swing arm 300 on the coordinate disk 600 is located at the center of the coordinate disk 600, the rotation of the coordinate disk 600 only changes the extending direction of the second sliding portion 601; if the hinged position of the polar coordinate swing arm 300 on the coordinate disk 600 is located at a non - center position on the coordinate disk 600, the rotation of the coordinate disk 600 can simultaneously change the hinged position of the polar coordinate swing arm 300 on the coordinate disk 600 and the extending direction of the second sliding portion 601.

[0052] Further, the second sliding portion 601 extends along the radial direction of the coordinate disk 600. Among them, the second sliding portion 601 extends along any diameter of the coordinate disk 600. By sliding the polar coordinate swing arm 300 along the second sliding portion 601 and rotating the coordinate disk 600 around its own axis, the connection position between the polar coordinate swing arm 300 and the coordinate disk 600 can be adjusted to any position of the cross - section of the coordinate disk 600.

[0053] Further, the polar coordinate swing arm 300 is pivotally connected to the second sliding portion 601 through a second movable member 700. Among them, the second sliding portion 601 adopts a second dovetail groove, the second movable member 700 is slidably connected in the second dovetail groove, and the polar coordinate swing arm 300 is pivotally connected to the second movable member 700. The second movable member 700 includes: a second shaft rod portion 710 and a second block body 720 adapted to the second dovetail groove. The second block body 720 is inserted into the second dovetail groove, and the second shaft rod portion 710 can slide along the extending direction of the second sliding portion 601. A third opening groove 721 is provided on the second block body 720. The second block body 720 is in interference fit in the second dovetail groove. Under the extrusion of the inner side wall of the second dovetail groove, the opening degree of the third opening groove 721 is reduced, and the third opening groove 721 has a tendency to increase the opening degree by rebounding, so that the second block body 720 is tightly fitted in the second dovetail groove. When the second block body 720 slides to any position in the second dovetail groove, the second block body 720 is tightened in the second dovetail groove, thereby preventing the second movable member 700 from loosening in the second sliding portion 601.

[0054] Further, a pointer disk 800 is pivotally connected to the second movable member 700; a first angular scale line is provided on the pointer disk 800, and / or a second angular scale line is provided on the base 200. Among them, both the pointer disk 800 and the polar coordinate swing arm 300 are rotatably connected to the second shaft rod portion 710. A first angular scale line is provided on the pointer disk 800. The polar coordinate swing arm 300 rotates around the second shaft rod portion 710, and the polar coordinate swing arm 300 is referenced to the first angular scale line, so that the swing angle of the polar coordinate swing arm 300 can be read. A second angular scale line is provided on the base 200, and the second angular scale line is arranged along the circumferential direction of the coordinate disk 600. A pointer is provided on the pointer disk 800. The pointer disk 800 rotates around the second shaft rod portion 710 and points to any scale value of the second angular scale line. By rotating the pointer disk 800, the included angle between any two work positions of the polar coordinate swing arm 300 can be measured; or, by combining the position of the second angular scale line indicated by the pointer disk 800 and the position of the first angular scale line indicated by the polar coordinate swing arm 300, the included angle between the extending direction of the polar coordinate swing arm 300 and the first direction can be obtained.

[0055] Further, a polar angle limiting component 900 is provided on the base 200, and the polar angle limiting component 900 is used to limit the movement stroke of the polar coordinate swing arm 300.

[0056] In some embodiments, a plurality of mounting holes are provided on the base 200, and the plurality of mounting holes are arranged at intervals along the circumferential direction of the turntable groove 211. The polar angle limiting component 900 adopts two stoppers, and the two stoppers are correspondingly connected to any two mounting holes. The polar coordinate swing arm 300 swings between the two stoppers, thereby limiting the swing range of the polar coordinate swing arm 300.

[0057] In this embodiment, an annular groove 212 is provided on the base 200, and the annular groove 212 extends along the circumferential direction of the turntable groove 211. The polar angle limiting component 900 includes: a first polar angle limiting member 910 and a second polar angle limiting member 920, and the first polar angle limiting member 910 and the second polar angle limiting member 920 are respectively connected in the annular groove 212. Both the first polar angle limiting member 910 and the second polar angle limiting member 920 include: a stop post 911 and a second block 912. The second block 912 is slidably connected in the annular groove 212, and the stop post 911 is threadedly connected to the second block 912 through a threaded hole. The stop post 911 passes through the threaded hole on the second block 912, and the stop post 911 abuts against the bottom of the annular groove 212, so that the polar angle limiting component 900 can be tightened in the annular groove 212, and further the first polar angle limiting member 910 and the second polar angle limiting member 920 can be respectively fixed at any position in the annular groove 212.

[0058] As Figure 1 and Figure 10As shown in the figure, a clamping assembly 110 is provided on the functional frame 100; the clamping assembly 110 includes: a clamping seat 111, a first slider 112, a second slider 113, and a top fastener 114; the clamping seat 111 has a clamping area 011 and an insertion area 012 adapted to the functional frame 100, and the first slider 112 and the second slider 113 are respectively movably connected to the clamping seat 111; the top fastener 114 is configured to drive the first slider 112 to lock the functional frame 100 and drive the second slider 113 to extend into the clamping area 011 when inwardly abutting against the first slider 112 and the second slider 113. Among them, the top fastener 114 is a bolt or an elastic element, and the first slider 112 and the second slider 113 respectively abut against the top fastener 114. By pushing the first slider 112 and the second slider 113 with the top fastener 114, the first slider 112 is inserted into the insertion area 012 to clamp the functional frame 100, and the second slider 113 is inserted into the clamping area 011 to clamp the electric grinding head in the clamping area 011.

[0059] Further, the clamping assembly 110 further includes a force dividing member 115. The force dividing member 115 has a first end surface abutting against the first slider 112 and a second end surface abutting against the second slider 113, and an included angle is formed between the first end surface and the second end surface; alternatively, the cross section of the force dividing member 115 is circular, and the first slider 112 and the second slider 113 respectively abut against the cylindrical surface of the force dividing member 115. By pushing the force dividing member 115 with the top fastener 114, and then pushing the first slider 112 and the second slider 113 by the force dividing member 115, the clamping assembly 110 can be locked and fixed to the functional frame 100, and at the same time, the functional device in the clamping area 011 can be clamped and fixed.

[0060] Embodiment Two

[0061] As Figure 1 shown, the machining profile constraint method provided by the embodiment of the present invention adopts the machining profile constraint mechanism provided by Embodiment One. The method includes: a straight-line machining condition and an arc machining condition.

[0062] In the straight-line machining condition: adjust the extending direction of the polar coordinate swing arm 300 and lock the polar coordinate swing arm 300; operate the functional frame 100 to move along the extending direction of the polar coordinate swing arm 300.

[0063] In the arc machining condition: adjust the position of the first movable member 400 on the polar coordinate swing arm 300 and lock the first movable member 400; operate the polar coordinate swing arm 300 to swing around the second movable member 700, and then drive the functional frame 100 to move.

[0064] Specifically, the functional frame 100 is installed with an electric grinding head, the rotary coordinate disk 600 is rotated, and the second movable member 700 is slid along the second sliding portion 601 to any position.

[0065] When machining along a straight line, the first polar angle limiting member 910 and the second polar angle limiting member 920 are used to clamp the polar coordinate swing arm 300, and the polar coordinate swing arm 300 is formed at a certain angle with the first direction. The distance between the first radius limiting member 510 and the second radius limiting member 520 is adjusted, and the functional frame 100 is operated to move along the extension direction of the polar coordinate swing arm 300, so that contour machining of a certain length can be performed according to the distance between the first radius limiting member 510 and the second radius limiting member 520.

[0066] When machining along an arc, the first radius limiting member 510 and the second radius limiting member 520 are used to clamp the first movable member 400, and the first movable member 400 is fixed at any position within the first sliding portion 301. The positions of the first polar angle limiting member 910 and the second polar angle limiting member 920 are respectively adjusted, so as to change the swing stroke of the polar coordinate swing arm 300 around the second movable member 700. The polar coordinate swing arm 300 is operated to swing around the second movable member 700, so that the functional frame 100 can be driven to move, and further the functional device can be moved along an arc, thereby realizing arc contour machining. The position of the first movable member 400 within the first sliding portion 301 is adjusted, so that the radius dimension corresponding to the arc can be changed. The central angle of the arc corresponding between the first polar angle limiting member 910 and the second polar angle limiting member 920 is adjusted, so that the size of the central angle corresponding to the machined arc contour can be changed.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A machining contour constraint mechanism, characterized in that, it includes: a function frame (100) and a base (200); the function frame (100) is used for installing functional devices; the function frame (100) is movably connected to the base (200), and the function frame (100) has degrees of freedom of movement extending along a first direction and a second direction respectively, and the first direction and the second direction form an angle; a clamping assembly (110) is provided on the function frame (100); the clamping assembly (110) includes: a clamping seat (111), a first slider (112), a second slider (113), a top fixing member (114) and a force dividing member (115); the clamping seat (111) has a clamping area (011) and an insertion area (012) adapted to the function frame (100), and the first slider (112) and the second slider (113) are respectively movably connected to the clamping seat (111); the top fixing member (114) is configured to drive the first slider (112) to lock the function frame (100) and drive the second slider (113) to extend into the clamping area (011) when inwardly abutting against the first slider (112) and the second slider (113); the cross section of the force dividing member (115) is circular, the first slider (112) and the second slider (113) respectively abut against the cylindrical surface of the force dividing member (115), and the top fixing member (114) pushes the force dividing member (115) so that the force dividing member (115) pushes the first slider (112) and the second slider (113).

2. The machining contour constraint mechanism according to claim 1, characterized in that, a polar coordinate swing arm (300) is movably connected to the base (200), and the function frame (100) is movably connected to the polar coordinate swing arm (300).

3. The machining contour constraint mechanism according to claim 2, characterized in that, the polar coordinate swing arm (300) is provided with a first sliding part (301), and the function frame (100) has a degree of freedom of movement along the first sliding part (301).

4. The machining contour constraint mechanism according to claim 3, characterized in that, the function frame (100) is pivotally connected to the first sliding part (301) through a first movable part (400).

5. The machining contour constraint mechanism according to claim 4, characterized in that, a radial limit assembly (500) is provided on the polar coordinate swing arm (300); the radial limit assembly (500) is used to limit the movement stroke of the function frame (100) along the first sliding part (301), or to lock the pivotal connection position of the function frame (100) on the first sliding part (301).

6. The machining contour constraint mechanism according to claim 2, characterized in that, a coordinate disk (600) is rotatably connected to the base (200), and the polar coordinate swing arm (300) is movably connected to the coordinate disk (600); The coordinate disk (600) is used to change the connection position between the polar coordinate swing arm (300) and the coordinate disk (600) by rotation, and / or the coordinate disk (600) is used to adjust the extension direction of the moving degree of freedom of the polar coordinate swing arm (300) relative to the coordinate disk (600) by rotation.

7. The machining profile constraint mechanism according to claim 6, wherein, a second sliding portion (601) is provided on the coordinate disk (600), and the polar coordinate swing arm (300) has a degree of freedom of movement along the second sliding portion (601).

8. The machining profile constraint mechanism according to claim 7, wherein, the second sliding portion (601) extends along the radial direction of the coordinate disk (600).

9. The machining profile constraint mechanism according to claim 7, wherein, the polar coordinate swing arm (300) is pivotally connected to the second sliding portion (601) through a second movable member (700).

10. The machining profile constraint mechanism according to claim 9, wherein, a pointer disk (800) is pivotally connected to the second movable member (700); a first angle scale line is provided on the pointer disk (800), and / or a second angle scale line is provided on the base (200).

11. The machining profile constraint mechanism according to claim 2, wherein, a polar angle limit assembly (900) is provided on the base (200), and the polar angle limit assembly (900) is used to limit the movement stroke of the polar coordinate swing arm (300).

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