Self-adaptive fixing device

Abstract

The utility model discloses a self-adaptive fixing device which comprises a positioning and clamping mechanism and a self-adaptive supporting mechanism, the positioning and clamping mechanism is used for positioning and fixing a workpiece, and the positioning and clamping mechanism is provided with an operation space which is located under the workpiece after the workpiece is fixed. The self-adaptive supporting mechanism is connected to the positioning and clamping mechanism and located in the operation space, and the self-adaptive supporting mechanism is provided with an elastic supporting part used for supporting the contact face of the workpiece in a self-adaptive mode. The positioning and clamping mechanism is used for positioning and fixing a workpiece, and the self-adaptive supporting mechanism can support the workpiece from the position below the workpiece through the operation space; the elastic supporting part elastically supports the contact surface of the workpiece, and when the contact surface is irregular due to deformation of the workpiece, the elastic supporting part effectively and comprehensively supports the contact surface through self-adaptive adjustment, so that the elastic supporting part is attached to a product all the time, and cutting machining is guaranteed.

Description

Technical Field

[0001] The utility model relates to an adaptive fixing device. Background Art

[0002] Metal cutting is a material removal and forming method in metal forming technology. The metal cutting process is the process of interaction between the workpiece and the tool. The tool removes excess metal from the workpiece to be processed, and under the premise of controlling productivity and cost, the workpiece is made to obtain geometric accuracy, dimensional accuracy and surface quality that meet the design and process requirements. In order to achieve this process, there must be relative motion between the workpiece and the tool, that is, cutting motion, which is provided by the metal cutting machine tool. The machine tool, fixture, tool and workpiece constitute a mechanical processing system.

[0003] The fixture is a key factor in accurately positioning the workpiece in mechanical processing to ensure processing quality and precision. The fixture determines the correct position of the workpiece in the fixture by contacting the positioning reference of the workpiece, thereby ensuring the relative correct position of the workpiece relative to the tool and the machine tool processing movement during processing.

[0004] For some workpieces, in order to facilitate the cutting of the milling cutter, the workpiece needs to be supported. Traditional fixtures rely on fixed surfaces to support the workpieces. However, some workpieces, especially those with sheet structures, may be deformed and not flat. Using traditional fixed surfaces to support the workpieces causes the deformed parts to be suspended in the air without support. The fixed surface cannot effectively support the entire contact surface of the workpiece. When the milling cutter cuts the suspended part of the workpiece, the relatively weak structure is prone to vibration and the risk of overcutting. Utility Model Content

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an adaptive fixing device to solve the problem that the existing clamps cannot effectively and comprehensively support the contact surface of the workpiece.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an adaptive fixing device including a positioning and clamping mechanism for positioning and fixing the workpiece and an adaptive supporting mechanism, wherein the positioning and clamping mechanism has an operating space located directly below the workpiece after the workpiece is fixed; the adaptive supporting mechanism is connected to the positioning and clamping mechanism and is located in the operating space, and the adaptive supporting mechanism has an elastic supporting portion for adaptively supporting the contact surface of the workpiece, by elastically supporting the contact surface of the workpiece, even if the contact surface of the workpiece is deformed, the elastic supporting portion can always contact the workpiece through adaptation, thereby always fitting to and supporting the workpiece, thereby ensuring the stability of product processing.

[0007] Furthermore, the positioning and clamping mechanism includes a frame, a positioning element arranged on the frame, and a clamping portion arranged on the frame, the operating space is formed on the frame, the adaptive support mechanism is installed on the frame, the positioning elements are arranged at the periphery of the operating space and have a positioning surface for supporting the workpiece with a height higher than the operating space, and the clamping portion is used to press the workpiece against the positioning surface to facilitate positioning and fixing the workpiece, and to prevent the positioning and clamping mechanism from affecting the coordination between the adaptive support mechanism and the workpiece.

[0008] Furthermore, the operating space has multiple side edges, and the positioning elements include support blocks installed on the top surface of the frame and distributed outside the multiple side edges of the operating space, multiple positioning pins fixedly installed on the frame in the vertical direction to position the workpiece, and limit blocks fixedly installed on the frame to support the workpiece. The plane where the top surface of each support block is located is defined as the positioning surface, and each positioning pin and each limit block are spaced apart on the periphery of multiple side edges of the operating space and extend in the vertical direction to above the positioning surface.

[0009] Furthermore, each of the positioning pins is disposed outside two adjacent sides of the operating space, and each of the limiting blocks is disposed outside other sides of the operating space, so that the positioning pins are used to position the workpiece, and the limiting blocks restrict and tighten the workpiece.

[0010] Furthermore, the clamping parts are adapted to be arranged in multiple support blocks, and each of the clamping parts includes a first driving member mounted on a frame, a pressure arm having one end hinged to an output shaft of the first driving member and the other end extending to directly above the corresponding support block, and a connecting rod having one end hinged to the pressure arm and the other end connected to the frame. The first driving member operates to drive the pressure arm to swing closer to or away from the support block, thereby being used to clamp the workpiece on the positioning surface, and cooperate with the positioning pin and the limit block to achieve all-round limiting of the workpiece.

[0011] Furthermore, the adaptive support mechanism includes a fixed frame connected to the frame and located below the operating space, the elastic support part installed on the fixed frame and located in the operating space, and a second driving member installed on the fixed frame and used to drive the elastic support part to move toward the positioning surface in a vertical direction, so that it can be away from the positioning surface before the workpiece is installed, thereby facilitating the installation of the workpiece, and after the workpiece is installed, the elastic support part is driven to move toward the workpiece until it supports the workpiece tightly, thereby supporting the contact surface of the workpiece.

[0012] Furthermore, a support plate is fixedly connected to the output shaft of the second driving member, and the elastic support portion is installed on the support plate so that the second driving member can drive the elastic support portion to move.

[0013] Furthermore, the elastic support portion includes a base plate installed and supported on the support plate and an elastic member inserted at the bottom of the base plate and capable of elastically extending and contracting in a vertical direction. The elastic members are arranged in plurality and are adjacently and evenly distributed on the base plate. The elastic members together form a support group for supporting the contact surface of the workpiece, so as to be able to adaptively support the contact surface of the workpiece and realize effective support of the workpiece.

[0014] Furthermore, each of the elastic parts includes an elastic pin having an insertion section and a supporting section and a spring sleeved on the insertion section. The insertion section is inserted on the bottom plate and has a diameter smaller than the diameter of the supporting section. The supporting section is telescopic relative to the insertion section in a vertical direction. A partition is provided parallel to the bottom plate. The insertion section and the spring of each of the elastic pins can move through the partition. Both ends of each of the springs are respectively pressed against the bottom plate and the supporting section, so that the elastic part can be telescopic, thereby ensuring adaptive support for the workpiece.

[0015] Furthermore, the base plate is provided with at least two pieces which are stacked in sequence in the vertical direction, and each base plate is provided with a vertical through hole at a position corresponding to each spring pin, and a connecting through hole is provided on the through hole at the bottom, and a secondary hole is provided for the insertion section to be inserted therein along the horizontal direction; a limiting end with a diameter larger than that of the insertion section and capable of passing through each through hole is provided at the bottom end of the insertion section, and the insertion section passes through a plurality of corresponding through holes in turn, and the corresponding through holes are staggered and the insertion section is inserted into the secondary hole, so that the limiting end is located outside the side of the through hole away from the supporting section to prevent the probe from detaching from the base plate.

[0016] Furthermore, the support plate supports and installs a surrounding frame arranged around the support group, and an inner groove is provided at the bottom of the surrounding frame at a position opposite to the bottom plate, into which the side edge of the bottom plate extends and presses the bottom plate, thereby limiting the movement of the bottom plate to ensure the stability of the elastic pin.

[0017] Furthermore, a third driving member is installed on the surrounding frame, and an output shaft of the third driving member passes through the surrounding frame to be pressed against the partition to ensure the tightness between the support groups.

[0018] Furthermore, the elastic support part also includes a slag-proof cover made of flexible material and arranged on the support group. The slag-proof cover is supported on the surrounding frame to prevent dust, slag and the like from falling between the elastic parts and affecting the service life of the elastic support part.

[0019] The adaptive fixing device of the utility model has at least the following beneficial effects: the positioning clamping mechanism is used to position and fix the workpiece, and through the operating space, the adaptive supporting mechanism can support the workpiece from below; the elastic supporting part elastically supports the contact surface of the workpiece, and when the workpiece is deformed and the contact surface becomes irregular, the elastic supporting part realizes effective and comprehensive support for the contact surface through adaptive adjustment, so as to always fit the product and ensure the progress of cutting processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the adaptive fixing device of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the adaptive fixing device of the utility model from other angles;

[0023] Figure 3 This is a schematic diagram of the structure of the adaptive support mechanism of the utility model after the slag protection cover is hidden;

[0024] Figure 4 It is a structural schematic diagram of the elastic support part of the utility model;

[0025] Figure 5 This is a schematic diagram of the partial structure of the elastic support portion of the utility model after the surrounding frame is hidden;

[0026] Figure 6 It is a partial cross-sectional view of the elastic support portion of the utility model;

[0027] Figure 7 It is a partial exploded view of the bottom plate and the elastic member of the utility model.

[0028] The meanings of the symbols in the accompanying drawings are:

[0029] Frame-11; square hole-111; positioning element-12; support block-121; positioning pin-122; limit block-123; convex bump-124; clamping part-13; first driving member-131; pressure arm-132; connecting rod-133;

[0030] Fixed frame-21; elastic support part-22; elastic member-221; spring pin-2211; insertion section-2211a; support section-2211b; limit end-2211c; spring-2212; partition-2213; surrounding frame-222; inner groove-2221; third driving member-223; slag cover-224; bottom plate-225; through hole-2251; secondary hole-2252; second driving member-23; support plate-231. DETAILED DESCRIPTION

[0031] The utility model will be further described below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 7 As shown, the adaptive fixing device of the utility model includes a positioning clamping mechanism and an adaptive supporting mechanism installed on the positioning clamping mechanism. The positioning clamping mechanism is used to position and fix the workpiece, and the adaptive supporting mechanism is used to adaptively support the contact surface of the workpiece to offset the deformation of the workpiece, prevent the workpiece from having irregular contact surfaces, and still be able to effectively support it, thereby avoiding the risk of vibration and overcutting during the cutting process due to the contact surface of the workpiece being suspended.

[0033] like Figure 1 to Figure 2 As shown, in this embodiment, the positioning and clamping mechanism includes a frame 11, a positioning element 12 arranged on the frame 11, and a clamping portion 13 arranged on the frame 11. An operating space is formed on the frame 11, and the adaptive support mechanism is installed on the frame 11 and located in the operating space. The positioning element 12 is arranged at the periphery of the operating space to position the edge of the workpiece and limit the lateral movement of the workpiece. The clamping portion 13 presses the workpiece to limit the vertical movement of the workpiece, realizing the restriction of all-round freedom, and the operating space is located directly below the fixed workpiece, so that the adaptive support mechanism can support the contact surface at the bottom of the workpiece after the workpiece is fixed, thereby improving the strength of the workpiece and ensuring the cutting process of the workpiece. It should be noted that the positioning and clamping mechanism is not limited to this embodiment, and can also be replaced by other structures that can position and fix the workpiece, such as directly using a robot arm or a clamp to clamp and fix the workpiece from both sides to achieve the positioning of the workpiece.

[0034] In the content defined in this embodiment, the frame 11 includes a rectangular working panel and a footrest fixedly connected to both sides of the bottom of the working panel, and a working table is provided on the top surface of the working panel. The positioning element 12 and the clamping part 13 are both installed on the working panel. A square hole 111 penetrating the working panel is provided in the middle of the working panel in the vertical direction. The inner cavity of the square hole 111 to the space below the square hole 111 is defined as an operating space. The operating space is square and has multiple sides, that is, four sides. The operating space enables the adaptive support mechanism to move from the bottom of the working panel to the top of the working panel in the operating space.

[0035] In the content defined in this embodiment, the positioning element 12 includes a support block 121 installed on the top surface of the frame 11 and arranged outside multiple side edges of the operating space, a plurality of positioning pins 122 fixedly installed on the frame 11 along the vertical direction to position the workpiece, and a limit block 123 fixedly installed on the frame 11 to support the workpiece. The support block 121 is used to support the workpiece, the positioning pins 122 are used to preliminarily determine the direction of the workpiece, and the limit block 123 is used to tighten the workpiece after the workpiece is matched with the positioning pins 122, so as to limit the freedom of the workpiece in the lateral direction and realize lateral positioning of the workpiece.

[0036] In this embodiment, the support block 121 is a cylindrical structure, and can also be other geometric shapes. The top surface heights of each support block 121 are consistent, and the transverse plane where the top surface of each support block 121 is located is defined as a positioning surface, and the height of the positioning surface is higher than the height of the operating space, so that the operating space will not affect the workpiece and the installation and positioning. Among them, the support blocks 121 are divided into two groups and symmetrically arranged on opposite sides of the operating space, so that the workpiece is suspended on the work surface after being supported on the positioning surface. Each positioning pin 122 and each limit block 123 are spaced and arranged at intervals on the periphery of each side of the operating space, and the tops of each positioning pin 122 and each limit block 123 extend upward in the vertical direction to above the positioning surface, so that the positioning pin 122 and the limit block 123 can be used to position and fix the workpiece. Specifically, the positioning pin 122 is divided into two groups, and the two groups of positioning pins 122 are arranged outside two adjacent sides of the operating space, and each group of positioning pins 122 is set to two or more. The positioning pin 122 is a cylindrical rod structure, and a positioning hole adapted to the positioning pin 122 is provided at a position on the workpiece corresponding to the positioning pin 122 for the positioning pin 122 to pass through. When in use, the two sides of the workpiece with the positioning holes are directed toward the positioning pin 122, and the workpiece is moved in the vertical direction so that the positioning pin 122 passes through the positioning hole. The positioning pins 122 in both directions not only limit the horizontal movement freedom of the workpiece in the lateral direction, but also limit the rotational freedom of the workpiece in the lateral direction.

[0037] In this embodiment, each limit block 123 is divided into two groups, and the two groups of limit blocks 123 are arranged outside the other two sides of the operation space. Each group of limit blocks 123 is provided with at least two limit blocks 123. When the workpiece is supported on the positioning surface in cooperation with the positioning pin 122, the limit block 123 abuts against the outer wall of the workpiece, thereby supporting the corresponding outer wall of the workpiece, thereby stabilizing the workpiece and reducing the amplitude and possibility of deformation of the side wall of the workpiece during the cutting process. Among them, the limit block 123 is farther away from the operation space than the support block 121 on the side where it is located, so that the support block 121 can support the workpiece. In this embodiment, in order to enable the workpiece to be smoothly inserted into the inner side of the stop block 123 when the positioning pin 122 cooperates with the workpiece to install the workpiece, a hemispherical convex bulge 124 is convexly provided on the side of the stop block 123 facing the operation space and facing the operation space. The convex bulge 124 has a spherical surface so that when the workpiece moves toward the positioning surface in the vertical direction, the convex bulge 124 and the outer wall of the workpiece are pressed against each other. The spherical surface of the convex bulge 124 is smooth and has low friction. Therefore, the workpiece can be relatively squeezed into the inner side of the stop block 123 and can be tightly pressed by the convex bulge 124.

[0038] In this embodiment, the position and number of the clamping parts 13 correspond to the support block 121 one by one to adapt to the support block 121 being arranged in multiple. Each clamping part 13 is used to press the workpiece against the positioning surface after the workpiece is installed on the positioning surface, thereby limiting the freedom of the workpiece in the vertical direction, and cooperating with the positioning pin 122 and the limit block 123 to achieve all-round freedom restriction. Each clamping part 13 includes a first driving member 131 installed on the working panel of the frame 11, a pressure arm 132 with one end hinged to the output shaft of the first driving member 131 and the other end extending to the top of the corresponding support block 121, and a connecting rod 133 with one end hinged to the pressure arm 132 and the other end connected to the frame 11. The connecting rod 133 cooperates with the pressure arm 132 to form a lever structure. The first driving member 131 operates to drive the pressure arm 132 to swing close to or away from the support block 121. In this embodiment, the first driving member 131 is a cylinder and the output shaft is arranged upward. The first driving member 131, the pressure arm 132 and the connection directly constitute a lever cylinder. The first driving member 131 can be installed on the side wall of the working panel and make the pressure arm 132 face the side of the operating space. After the first driving member 131 is running, when the output shaft of the first driving member 131 moves upward, one end of the pressure arm 132 is lifted, and the end of the pressure arm 132 close to the support block 121 swings toward the side close to the support block 121 until it is pressed against the support block 121 or the workpiece; when the output shaft of the first driving member 131 shrinks downward, one end of the pressure arm 132 is pressed down, and the end of the pressure arm 132 close to the support block 121 swings toward the side away from the support block 121 until it is away from the support block 121, thereby loosening the workpiece and realizing the installation and pressing of the workpiece.

[0039] like Figures 3 to 7As shown, in this embodiment, the adaptive support mechanism is located in the operating space so that it can pass through the square hole 111 relative to the operating space to move closer to or away from the workpiece. The adaptive support mechanism includes a fixed frame 21 connected to the frame 11 and located below the operating space, an elastic support portion 22 installed on the fixed frame 21 and located in the operating space, and a second driving member 23 installed on the fixed frame 21 and used to drive the elastic support portion 22 to move toward the positioning surface in the vertical direction. The fixed frame 21 is used to support the elastic support portion 22 and the second driving member 23. The elastic support portion 22 is used to adaptively support the contact surface of the workpiece, so that after the workpiece is installed in place, the second driving member 23 drives the elastic portion to approach and press against the contact surface of the workpiece, and the elastic support cooperates to always fit and form various positions of the contact surface, so as to avoid the situation where the contact surface is suspended, thereby improving the cutting yield of the workpiece and improving the stability of the processing size. It should be noted that the adaptive support mechanism is not limited to the structure of the present embodiment, and other structures capable of realizing elastic adaptive support may be used as a replacement, such as an adaptive support mechanism including a fixed plate located below the working panel, a fourth driving member mounted on the fixed plate, an extrusion plate connected to the output shaft of the fourth driving member, a bag belt made of a flexible, water-impermeable and air-impermeable material, and an electrorheological fluid filled in the bag belt. The fourth driving member may be a power device such as a cylinder or an electric push rod that can drive the extrusion plate to move, and the output shaft of the fourth driving member is arranged in a vertical direction toward one side of the working panel. The extrusion plate is parallel to the working panel and has a plate-like structure. A frame-shaped or annular ring plate made of metal material is fixedly connected to the bottom surface of the working panel at the periphery of the square hole 111. The ring plate is connected to a power supply, and the bag belt is located on the inner side of the ring plate and is fixedly connected to the top of the extrusion plate. When in use, the fourth driving member drives the extrusion plate to move toward the positioning surface until the bag belt squeezes the workpiece and presses against the workpiece. Since the bag belt is made of flexible material, it will adapt to the contour extension of the workpiece contact surface under the extrusion of the extrusion plate. Then the power is turned on to form an electric field environment inside the ring plate, and the electrorheological fluid is transformed from liquid to fixed and can support the workpiece contact surface.

[0040] In the content defined in this embodiment, the fixing frame 21 is composed of a fixing plate parallel to the working panel and a plurality of connecting rods arranged at the four corners of the fixing plate. The first end of each connecting rod is fixedly connected to the fixing plate, and the other end of each connecting plate is fixedly connected to the working panel so that the fixing plate and the working panel are spaced apart.

[0041] In the content defined in this embodiment, the second driving member 23 is a top cylinder, and the output shaft of the second driving member 23 is arranged in the vertical direction and upward. The second driving member 23 is set to two, and two movable holes are opened on the fixed frame 21 in the vertical direction for the output shaft of the second driving member 23 to move through. The output shafts of the two second driving members 23 move through the two movable holes respectively, and the two second driving members 23 are fixedly installed on the fixed frame 21, so that the second driving member 23 remains stationary and the two output shafts can be extended and retracted in the vertical direction. A support plate 231 arranged parallel to the fixed frame 21 is fixedly connected to the output shafts of the two second driving members 23, and the support plate 231 is located at the upper position of the fixed frame 21, and the second driving member 23 is located below the fixed frame 21, so that the operation of the second driving member 23 can make the support plate 231 move in the vertical direction toward the side close to the working panel or away from the working panel, and the two second driving members 23 can remain relatively stable.

[0042] In the content defined in this embodiment, the elastic support part 22 is installed on the support plate 231 and is arranged in the vertical direction directly opposite to the square hole 111, so that the elastic support part 22 is located in the operating space, so that the second driving member 23 can move with the support plate 231. The elastic support part 22 includes a bottom plate 225 installed and supported on the support plate 231, an elastic member 221 that can be elastically extended and retracted in the vertical direction and is inserted at the bottom of the bottom plate 225, a surrounding frame 222 that surrounds the elastic member 221 and is installed on the support plate 231, a third driving member 223 installed on the surrounding frame 222, and a slag-proof cover 224 made of a flexible material and covered on the elastic member 221. The bottom plate 225 is used to install and support the elastic member 221. The elastic member 221 is arranged in multiple and adjacently evenly distributed on the bottom plate 225 to respectively support various positions of the workpiece contact surface. The support points are independent of each other to achieve adaptive support. To ensure that the elastic support part 22 can always maintain comprehensive support for the contact surface, the surrounding frame 222 is arranged around the periphery of each elastic member 221 to prevent the elastic members 221 from tilting and loosening due to the extrusion of the workpiece, so that the elastic members 221 can maintain a cohesive state and evenly support the contact surface of the workpiece. The third driving member 223 cooperates with the elastic member 221 to keep the elastic members 221 stable. The slag prevention cover 224 blocks the elastic members 221 to prevent dust, slag, etc. from falling between the elastic members 221 and affecting the service life and use effect of the elastic members 221. At the same time, the flexible slag prevention cover 224 will not affect the adaptive support of the elastic members 221 to the workpiece.

[0043] In the content defined in this embodiment, the number of elastic members 221 corresponds to the size of the contact surface of the workpiece to be cut and is neatly arranged to form a square support group for supporting the contact surface of the workpiece. The entire support group is located in the operating space so that it can move in the vertical direction relative to the square hole 111 in the operating space, thereby moving toward the positioning surface and being able to cooperate with the workpiece. Each elastic member 221 includes an elastic pin 2211 having an insertion section 2211a and a support section 2211b, a spring 2212 sleeved on the insertion section 2211a, and a partition plate 2213 arranged parallel to the bottom plate 225. The support section 2211b is sleeved on the support section 2211b in the vertical direction. The insertion section 2211a is inserted into the support section 2211b and is sleeved on the interior of the support section 2211b, and the two ends of the compression spring are respectively pressed against the insertion section 2211a and the support section 2211b, so that the support section 2211b can be telescopically moved in the vertical direction relative to the insertion section 2211a, so that the elastic pin 2211 forms a telescopic rod and can be telescopic. The insertion section 2211a is inserted on the bottom plate 225 and has a diameter smaller than that of the support section 2211b and can be inserted into the support section 2211b. The support section 2211b is located on the side facing the square hole 111, and the insertion section 2211a is located on the side facing the fixed plate. On one end of the insertion section 2211a away from the support section 2211b, that is, the bottom end of the insertion section 2211a, there is a limit end 2211c with a diameter larger than that of the insertion section 2211a. The spring 2212 is movably sleeved on the insertion section 2211a, and the two ends of the spring 2212 are respectively pressed against the bottom plate 225 and the support section 2211b, so that the spring 2212 can be squeezed when the support section 2211b of the spring pin 2211 supports and squeezes the workpiece. When the workpiece is no longer subjected to force, the spring 2212 stretches and rebounds to quickly reset the support section 2211b. The partition 2213 is a square sheet structure, and a number of through holes corresponding to the number and position of the probe are opened on the partition 2213 at the positions corresponding to the spring pins 2211. The limit end 2211c of each spring pin 2211 passes through the through hole, and each insertion section 2211a moves through each through hole, so that each spring pin 2211 is kept neat and the probe is prevented from tilting to a certain extent. The spring 2212 can move through the corresponding through hole on the partition 2213 to prevent the partition 2213 from affecting the cooperation between the spring 2212 and the support section 2211b.

[0044] The bottom plate 225 is provided with at least two pieces and stacked in sequence in the vertical direction. The bottom plates 225 are all of the same size and are connected to the support plate 231 by bolt connection or the like. The size of the bottom plate 225 is larger than the size of the partition plate 2213. In the content defined in this embodiment, the bottom plate 225 is provided with two pieces and stacked. A through hole 2251 is provided on each bottom plate 225 at a position corresponding to each elastic pin 2211 and a through hole, and the insertion section 2211a and the limit end 2211c can move through the through hole 2251. Simple insertion cannot fix the spring pin 2211, so each through hole 2251 on the bottommost bottom plate 225 is provided with a secondary hole 2252 which is connected to the through hole 2251 and through which the insertion section 2211a is inserted in the lateral direction, and the diameter of the secondary hole 2252 can be adapted to the diameter of the insertion section 2211a, and the secondary hole 2252 is in a minor arc shape, so that the insertion section 2211a can move into the secondary hole 2252. It should be noted that the secondary holes 2252 of each through hole 2251 on the bottommost bottom plate 225 are the same and have the same orientation. During assembly, the through holes 2251 on each bottom plate 225 are coaxially distributed. At this time, the bottom plates 225 are not aligned. The limiting end 2211c passes through the corresponding multiple through holes 2251 on each bottom plate 225 in sequence. At this time, the insertion section 2211a is in the through hole 2251 outside the secondary hole 2252. After the limiting section passes through the through hole 2251 downward, the bottom bottom plate 225 is moved and the bottom plates 225 are aligned and stacked. The insertion section 2211a moves into the secondary hole 2252, and the through holes 2251 located above the secondary hole 2252 press against the insertion section 2211a at this time. The corresponding through holes 2251 on each base plate 225 are staggered at this time to clamp the insertion section 2211a in the secondary hole 2252, and the limiting end 2211c presses against the lowest base plate 225 to limit the spring pin 2211 and prevent the probe from detaching from the base plate 225.

[0045] In the content defined in this embodiment, the enclosing frame 222 is a square frame structure, and the shape and size of the inner cavity of the enclosing frame 222 are adapted to the shape and size of the support group and consistent with the shape and size of the partition 2213, so that the enclosing frame 222 can be covered on the periphery of the support group and the partition 2213. When the enclosing frame 222 is sleeved on the periphery of the support group and the partition 2213, there is a gap between the partition 2213 and the inner wall of the enclosing frame 222 so that the partition 2213 can pass through the enclosing frame 222. In order to prevent the bottom plate 225 from affecting the use of the surrounding frame 222, an inner groove 2221 adapted to the edge of the bottom plate 225 is opened on the inner side of the bottom of the surrounding frame 222 at a position corresponding to the bottom plate 225. When the surrounding frame 222 is sleeved on the support group and the partition 2213, the edge of the bottom plate 225 is located in the inner groove 2221, so that the surrounding frame 222 can be installed on the support plate 231. At the same time, the top wall of the inner groove 2221 presses the bottom plate 225 to limit the bottom plate 225 to a certain extent and ensure the stability of the elastic pin 2211.

[0046] In the content defined in this embodiment, the third driving member 223 is also a cylinder, and the third driving member 223 is provided in at least two groups and is separately provided outside each side of the surrounding frame 222, and the output shaft of the third driving member 223 is arranged horizontally toward one side of the surrounding frame 222. A through hole for the output shaft to movably pass through is provided on the surrounding frame 222 corresponding to the output shaft of the third driving member 223, and the through hole is arranged in the horizontal direction just opposite to the partition 2213. After the output shaft of the third driving member 223 passes through the through hole, the third driving member 223 is installed on the surrounding frame 222, so that the third driving member 223 can press against the partition 2213 to prevent the partition 2213 from loosening and affecting the stability of the elastic pins 2211, so that each elastic pin 2211 is fixed.

[0047] In the content defined in this embodiment, the slag shield 224 is provided on the support group, and the shape of the slag shield 224 is adapted to the shape of the support group. A retaining edge can be provided at the edge of the slag shield 224, and the retaining edge is supported on the surrounding frame 222. The slag shield 224 can be made of a flexible and elastic material such as silicone and rubber, so that the elastic pins 2211 will not be affected by the slag shield 224 when the lengths thereof are different. At the same time, the slag shield 224 can protect the elastic pins 2211 to prevent the slag from falling into the elastic support part 22 and affecting the use of the elastic pins 2211.

[0048] The working method of one embodiment of the adaptive fixing device of the utility model is as follows:

[0049] Preparation: Make the pressing arm 132 away from the supporting block 121, and the top height of the supporting group is lower than the positioning surface;

[0050] Workpiece installation: After the positioning hole of the workpiece is aligned with the positioning pin 122, the workpiece is moved toward the positioning surface in the vertical direction until the positioning pin 122 penetrates into the positioning hole, and the side of the workpiece facing the limit block 123 is squeezed through the convex bump 124 until it is supported on the positioning surface, and the first driving member 131 is operated to make the pressing arm 132 press the workpiece, and the contact surface of the workpiece faces downward to face the support group;

[0051] Workpiece contact surface support preparation: The second driving member 23 is operated to make the support plate 231 drive the support group to move toward the positioning surface until each spring pin 2211 is pressed against the contact surface, and then the second driving member 23 stops operating, and then the cutting process can be carried out;

[0052] Finishing work: After the workpiece is cut, the second driving member 23 drives the support assembly back to the initial position, and the first driving member 131 operates to move the pressing arm 132 away from the support block 121, and then the workpiece can be removed.

Claims

1. An adaptive fixing device, characterized in that: include: A positioning and clamping mechanism, used for positioning and fixing the workpiece, wherein the positioning and clamping mechanism has an operating space located directly below the workpiece after the workpiece is fixed; as well as The adaptive support mechanism is connected to the positioning and clamping mechanism and is located in the operating space. The adaptive support mechanism has an elastic support portion for adaptively supporting the contact surface of the workpiece.

2. The adaptive fixing device according to claim 1, characterized in that: The positioning and clamping mechanism includes a frame, a positioning element arranged on the frame, and a clamping portion arranged on the frame. The operating space is formed on the frame, and the adaptive supporting mechanism is installed on the frame. The positioning elements are arranged at the periphery of the operating space and have a positioning surface for supporting a workpiece with a height higher than the operating space. The clamping portion is used to press the workpiece against the positioning surface.

3. The adaptive fixing device according to claim 2, characterized in that: The operating space has multiple sides, and the positioning elements include support blocks installed on the top surface of the frame and arranged outside the multiple sides of the operating space, multiple positioning pins fixedly installed on the frame in the vertical direction to position the workpiece, and limit blocks fixedly installed on the frame to support the workpiece. The plane where the top surface of each support block is located is defined as the positioning surface, and each positioning pin and each limit block are spaced apart and arranged on the periphery of multiple sides of the operating space and extend vertically to above the positioning surface; each positioning pin is arranged outside two adjacent sides of the operating space, and each limit block is arranged outside the other sides of the operating space.

4. The adaptive fixing device according to claim 3, characterized in that: The clamping parts are adapted to be arranged in multiple support blocks, and each of the clamping parts includes a first driving member mounted on a frame, a pressure arm having one end hinged to an output shaft of the first driving member and the other end extending to directly above the corresponding support block, and a connecting rod having one end hinged to the pressure arm and the other end connected to the frame, and the first driving member operates to drive the pressure arm to swing closer to or away from the support block.

5. The adaptive fixing device according to claim 2, characterized in that: The adaptive support mechanism includes a fixed frame connected to the frame and located below the operating space, the elastic support part installed on the fixed frame and located in the operating space, and a second driving member installed on the fixed frame and used to drive the elastic support part to move in a vertical direction toward the positioning surface; a support plate is fixedly connected to the output shaft of the second driving member, and the elastic support part is installed on the support plate.

6. The adaptive fixing device according to claim 5, characterized in that: The elastic support portion includes a base plate installed and supported on the support plate and an elastic member inserted at the bottom of the base plate and capable of elastically stretching and contracting in a vertical direction. The elastic members are arranged in plurality and are evenly distributed adjacently on the base plate, and the elastic members together form a support group for supporting the contact surface of the workpiece; an enclosure frame arranged around the periphery of the support group is supported and installed on the support plate, and an inner edge groove is provided at the bottom of the enclosure frame at a position opposite to the base plate, into which the side edge of the base plate extends and presses the base plate.

7. The adaptive fixing device according to claim 6, characterized in that: Each of the elastic parts includes an elastic needle with an insertion section and a supporting section and a spring sleeved on the insertion section. The insertion section is inserted on the bottom plate and has a diameter smaller than the diameter of the supporting section. The supporting section is telescopic relative to the insertion section in the vertical direction. A partition is provided parallel to the bottom plate. The insertion section of each of the elastic needles and the spring can move through the partition, and both ends of each of the springs are respectively pressed against the bottom plate and the supporting section.

8. The adaptive fixing device according to claim 7, characterized in that: The bottom plate is provided with at least two pieces and stacked in sequence in the vertical direction. A vertical through hole is provided on each bottom plate at a position corresponding to each spring pin. A connecting through hole is provided on the through hole at the bottom and a secondary hole is provided for the insertion section to be inserted therein along the horizontal direction. A limiting end having a diameter larger than that of the insertion section and capable of passing through each through hole is provided at the bottom end of the insertion section. The insertion section passes through a plurality of corresponding through holes in sequence. The corresponding through holes are staggered and the insertion section is inserted into the secondary hole.

9. The adaptive fixing device according to claim 6, characterized in that: A third driving member is installed on the surrounding frame, and an output shaft of the third driving member passes through the surrounding frame to be pressed against the partition.

10. The adaptive fixing device according to claim 9, characterized in that: The elastic support part also includes a slag-proof cover made of a flexible material and arranged on the support group, and the slag-proof cover is supported on the surrounding frame.

Images