Rapid clamping tool capable of adjusting circle center position

Abstract

The invention relates to a rapid clamping tool capable of adjusting the circle center position. The rapid clamping tool comprises a mother board and a daughter board. A plurality of zero floating assemblies, a plurality of zero return assemblies and a plurality of lateral auxiliary supports are arranged on the mother board; the zero point floating assembly comprises a first fixed layer, a first floating layer, a first mounting seat and a first zero point positioning system which are sequentially arranged from bottom to top; a floating locking device is arranged in the first floating layer; the zero return assembly comprises a second fixed layer, a second floating layer, a second mounting seat and a second zero positioning system which are sequentially arranged from bottom to top; a floating zeroing device is arranged in the second floating layer; and a plurality of zero point blind rivets and a plurality of auxiliary supporting stop blocks are arranged on the daughter board. According to the invention, floating adjustment can be carried out on the circle center position of the daughter board part, the adjustment amount is large, the adjustment process is light, labor-saving and convenient to operate, and the whole body can be quickly locked by the floating locking device after adjustment.

Description

Technical Field

[0001] The invention relates to the field of quick clamping tooling, in particular to a quick clamping tooling capable of adjusting the center position of a circle. Background Art

[0002] The machinery industry has put forward higher and higher requirements for quick clamping tooling, especially in lathe processing. It takes a long time to find the center of the circle. At the same time, the loading and unloading process requires quick docking between the workpiece and the tooling, and the processed parts need to be centered again. However, manual adjustment of the center and locking is generally time-consuming and labor-intensive, and displacement is prone to occur during the clamping process. It is not easy to align the center of the tooling sub-plate.

[0003] When processing large parts on a vertical lathe, due to the heavy weight of the parts and the high processing precision requirements, the center of the part needs to be aligned to make it concentric with the center of rotation of the machine tool. At the same time, large parts have more clamping points and require greater clamping force. When replacing parts, it is necessary to repeat the alignment, which affects the processing efficiency.

[0004] Therefore, we proposed a quick clamping tool with adjustable center position to solve the center alignment and processing problems during the above-mentioned vertical lathe processing. Summary of the invention

[0005] The embodiment of the present invention provides a quick clamping tool capable of adjusting the center position of a circle, so as to solve the problem that the existing quick clamping tool needs to find the center of the circle after clamping, which is time-consuming and laborious.

[0006] In order to overcome the above technical problems, according to an embodiment of the present invention, a quick clamping tool capable of adjusting the center position of a circle is provided, comprising: a motherboard; a plurality of zero-point floating components, a plurality of zero-point return-to-zero components and a plurality of lateral auxiliary supports are arranged on the motherboard; the zero-point floating component comprises a first fixed layer, a first floating layer, a first mounting seat and a first zero-point positioning system which are arranged in sequence from bottom to top, the first fixed layer is fixed on the motherboard, the first floating layer can be arranged horizontally slidably on the first fixed layer, the first mounting seat is fixed on the first floating layer, the first zero-point positioning system is arranged on the first mounting seat, and a floating locking device is arranged in the first floating layer; the zero-point return-to-zero component comprises a second fixed layer, a second floating layer, a second mounting seat and a second zero-point positioning system which are arranged in sequence from bottom to top, the second fixed layer is fixed on the motherboard, the second floating layer can be arranged horizontally slidably on the second fixed layer, the second mounting seat is fixed on the second floating layer, the second zero-point positioning system is arranged on the second mounting seat, and a floating return-to-zero device is arranged in the second floating layer; and Sub-board; a plurality of zero-point pull pins and a plurality of auxiliary support blocks are arranged on the sub-board; the number of the zero-point pull pins is equal to the sum of the number of the zero-point floating components and the zero-point return components, and the zero-point pull pins cooperate with the first zero-point positioning system and the second zero-point positioning system; the number of the auxiliary support blocks is equal to the number of the lateral auxiliary supports, and the auxiliary support blocks cooperate with the lateral auxiliary supports.

[0007] In some embodiments, a first stepped hole is opened in the middle of the first floating layer, a first blocking cover is arranged in the first stepped hole, the first blocking cover is fixedly connected to the first fixed layer, the upper end of the first blocking cover is stuck on one of the steps of the first stepped hole, and there is a movable gap between the lateral edge of the first blocking cover and the inner contour of the first stepped hole.

[0008] In some embodiments, the floating locking device includes a first pull-down cylinder, a first center pull rod and a pressure plate, the first step hole includes at least two steps, and the pressure plate is arranged on one of the steps above the first blocking cover; an enlarged head is formed at the upper end of the first center pull rod, and the first center pull rod passes through the pressure plate, the first blocking cover and the first fixed layer from top to bottom in sequence and is connected to the first pull-down cylinder; the enlarged head and the lateral circumferential side of the pressure plate both have a movable gap.

[0009] In some embodiments, a plurality of first spring return-to-zero devices are centrally symmetrically arranged in the first floating layer, and the first spring return-to-zero devices include a first accommodating hole radially opened along the first floating layer, a first screw block threadedly connected to the first accommodating hole, a first spring squeezed on the first screw block, and a first steel ball pressed toward the first fixed layer by the first spring.

[0010] In some embodiments, a second stepped hole is opened in the middle of the second floating layer, a second blocking cover is arranged in the second stepped hole, the second blocking cover is fixedly connected to the second fixed layer, the upper end of the second blocking cover is stuck on one of the steps of the second stepped hole, and there is a movable gap between the lateral edge of the second blocking cover and the inner contour of the second stepped hole.

[0011] In some embodiments, the floating return to zero device includes a second pull-down cylinder and a second center pull rod, a horizontal plate is formed on the upper end of the second center pull rod, a cone is formed on the lower end surface of the horizontal plate, a tapered hole matching the cone is formed in the second stepped hole, and the tapered hole is located above the second blocking cover; the second center pull rod passes through the second blocking cover and the second fixed layer from top to bottom in sequence and is connected to the second pull-down cylinder; the lateral circumferential side of the horizontal plate has a movable gap.

[0012] In some embodiments, a plurality of second spring return-to-zero devices are centrally symmetrically arranged in the second floating layer, and the second spring return-to-zero devices include a second accommodating hole radially opened along the second floating layer, a second screw block threadedly connected to the second accommodating hole, a second spring squeezed on the second screw block, and a second steel ball pressed toward the second fixed layer by the second spring.

[0013] In some embodiments, a weight-reducing auxiliary support is also provided on the motherboard; the weight-reducing auxiliary support includes a supporting base fixed on the motherboard, a plurality of guide columns movably arranged up and down in the supporting base, a compression spring arranged under the guide column, a universal ball roller arranged above the guide column, and a cover plate arranged above the universal ball roller.

[0014] In some embodiments, a plurality of third spring return-to-zero devices are symmetrically arranged on the side surface of the cover plate, and the third spring return-to-zero device includes a third accommodating hole radially opened along the cover plate, a third screw block threadedly connected to the third accommodating hole, a third spring squeezed on the third screw block, and a third steel ball pressed toward the supporting base by the third spring.

[0015] In some embodiments, a plurality of limit baffles are further provided on the motherboard, and the limit baffles include a baffle seat fixed on the motherboard and a baffle and a pressing pin provided on the baffle seat.

[0016] The technical solution provided by the embodiments of the present invention may have the following beneficial effects: The present invention uses a zero-point floating component and a zero-point return-to-zero component in conjunction with a zero-point rivet to fix parts. Both the zero-point floating component and the zero-point return-to-zero component can float. When alignment is required, they are repositioned by utilizing a lateral auxiliary support in conjunction with an auxiliary support block. After processing is completed, the zero-point return-to-zero component can also be forced to return to zero for the convenience of the next sub-board installation. The present invention can perform floating adjustment on the center position of part of the sub-board, and the adjustment amount is large. The adjustment process is light, labor-saving, and easy to operate. After adjustment, the floating locking device can quickly lock the entirety.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] Figure 1 The figure is a schematic diagram of a quick clamping tool assembly structure with adjustable center position according to an exemplary embodiment.

[0020] Figure 2 The diagram is a schematic diagram of a sub-plate structure of a quick clamping fixture with adjustable center position according to an exemplary embodiment.

[0021] Figure 3 The figure is a schematic diagram of a motherboard structure of a quick clamping fixture with adjustable center position according to an exemplary embodiment.

[0022] Figure 4 The diagram is a schematic diagram of the structure of a zero-point floating assembly of a quick clamping fixture capable of adjusting the center position of a circle according to an exemplary embodiment.

[0023] Figure 5 The present invention is a cross-sectional view of a zero-point floating component structure of a quick clamping fixture with adjustable center position according to an exemplary embodiment.

[0024] Figure 6 The present invention is a schematic structural diagram of a zero-point return-to-zero component of a quick clamping fixture capable of adjusting the center position of a circle according to an exemplary embodiment.

[0025] Figure 7 The present invention is a cross-sectional view of a zero-point return component structure of a quick clamping fixture capable of adjusting the center position of a circle according to an exemplary embodiment.

[0026] Figure 8 The figure is a cross-sectional view of a weight-reducing auxiliary support structure of a quick clamping fixture with adjustable center position according to an exemplary embodiment.

[0027] Fig. 9 The diagram is a schematic diagram of a limit baffle structure of a quick clamping tool capable of adjusting the center position of a circle according to an exemplary embodiment.

[0028] In the figure, 1, motherboard; 2. Zero point floating assembly; 201. First fixed layer; 202. First floating layer; 2021. First stepped hole; 203. First mounting seat; 204. First zero point positioning system; 205. Floating locking device; 2051. First pull-down cylinder; 2052. First center pull rod; 2053. Pressing plate; 2054. Expanding head; 206. First plugging cover; 207. First spring zero return device; 2071. First accommodating hole; 2072. First screw block; 2073. First spring; 2074. First steel ball; 3. Zero point return assembly; 301. Second fixed layer; 302. Second floating layer; 3021. Second stepped hole; 303. Second mounting seat; 304. Second zero point positioning system; 305. Floating return to zero device; 3051. Second pull-down cylinder; 3052. Second center pull rod; 3053. Cross plate; 3054. Cone; 3055. Cone hole; 306. Second plugging cover; 307. Second spring return to zero device; 3071. Second accommodating hole; 3072. Second screw block; 3073. Second spring; 3074. Second steel ball; 4. Lateral auxiliary support; 5. Sub-plate; 6. Zero-point rivet; 7. Auxiliary support block; 8. Weight reduction auxiliary support; 801. Support base; 802. Guide column; 803. Compression spring; 804. Universal ball; 805. Cover plate; 806. Third spring zero return device; 8061. Third accommodating hole; 8062. Third screw block; 8063. Third spring; 8064. Third steel ball; 9. Limit baffle; 901. baffle seat; 902. baffle; 903. pressing nail. DETAILED DESCRIPTION

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-9 As shown, the present invention provides a quick clamping fixture capable of adjusting the center position of a circle, and some specific embodiments are described below, including a motherboard 1 and a daughterboard 5. A plurality of zero-point floating components 2, a plurality of zero-point return components 3 and a plurality of lateral auxiliary supports 4 are installed on the motherboard 1. A plurality of zero-point pull pins 6 and a plurality of auxiliary support blocks 7 are installed on the daughterboard 5. The number of zero-point pull pins 6 is equal to the sum of the number of zero-point floating components 2 and the number of zero-point return components 3, and the number of auxiliary support blocks 7 is equal to the number of lateral auxiliary supports 4. When in use, the zero-point pull pins 6 on the daughterboard 5 are inserted downward into the corresponding zero-point floating component 2 or the zero-point return component 3 for fixing, and the lateral auxiliary support 4 is extended to support the auxiliary support block 7 to fix the daughterboard 5.

[0033] like Figure 4 , 5As shown, in some embodiments, the zero-point floating assembly 2 includes a first fixed layer 201, a first floating layer 202, a first mounting seat 203 and a first zero-point positioning system 204 which are sequentially installed from bottom to top. Specifically, the first fixed layer 201 is fixed on the motherboard 1 by bolts, the first floating layer 202 is placed on the first fixed layer 201, the first fixed layer 201 is in plane contact with the first fixed layer 201, a first stepped hole 2021 is provided in the middle of the first floating layer 202, a first blocking cover 206 is installed in the first stepped hole 2021, the first blocking cover 206 is fixedly connected to the first fixed layer 201 by bolts, the upper end of the first blocking cover 206 is stuck on one of the steps of the first stepped hole 2021 to prevent the first floating layer 202 from being separated from the first fixed layer 201; there is an active gap between the lateral edge of the first blocking cover 206 and the inner contour of the first stepped hole 2021, and the active gap is generally 5 mm, so that the first floating layer 202 can slide on the first fixed layer 201. The first mounting seat 203 is fixed on the first floating layer 202 by bolts, and the first zero-point positioning system 204 is installed on the first mounting seat 203, and cooperates with the zero-point pull nail 6 through the first zero-point positioning system 204. A floating locking device 205 is installed in the first floating layer 202, and the floating locking device 205 includes a first pull-down cylinder 2051, a first center pull rod 2052 and a pressure plate 2053. The first stepped hole 2021 includes at least two steps, and the pressure plate 2053 is placed on one of the steps above the first plugging cover 206. An enlarged head 2054 is formed on the upper end of the first center pull rod 2052, and the enlarged head 2054 and the pressure plate 2053 have a movable gap on the lateral circumferential side, so that the first floating layer 202 still has space for lateral movement. The first central pull rod 2052 passes through the pressing plate 2053, the first blocking cover 206 and the first fixed layer 201 from top to bottom in sequence and is connected to the first pull-down oil cylinder 2051. When the first floating layer 202 is adjusted to a position and needs to be fixed, the first pull-down oil cylinder 2051 pulls the first central pull rod 2052 downward, driving the expansion head 2054 to move downward and press the pressing plate 2053, thereby pressing the first floating layer 202 and locking the position of the first floating layer 202. When the first pull-down oil cylinder 2051 is released, the floating function of the zero-point floating assembly 2 is in an open state, and the floating can be performed to adjust the center position of the sub-plate 5; when the first pull-down oil cylinder 2051 is pulled down and locked, the floating function of the zero-point floating assembly 2 is in a closed state. A plurality of first spring 2073 return-to-zero devices 207 are also centrally symmetrically installed in the first floating layer 202. The first spring 2073 return-to-zero devices 207 include a first accommodating hole 2071 radially opened along the first floating layer 202, a first screw block 2072 threadedly connected to the first accommodating hole 2071, a first spring 2073 squeezed on the first screw block 2072, and a first steel ball 2074 pressed toward the first fixed layer 201 by the first spring 2073.When the first floating layer 202 moves away from the center, it will be subject to the elastic force of the squeezed first spring 2073. When the first floating layer 202 is unlocked, the position of the first floating layer 202 will be restored to the original zero position, but the accuracy is not high.

[0034] like Figure 6 , 7As shown, similarly, in some of the embodiments, the zero point return to zero component 3 includes a second fixed layer 301, a second floating layer 302, a second mounting seat 303 and a second zero point positioning system 304 which are sequentially installed from bottom to top, the second fixed layer 301 is fixed on the motherboard 1 by bolts, the second floating layer 302 is placed on the second fixed layer 301, the second fixed layer 301 is in plane contact with the second fixed layer 301, a second stepped hole 3021 is provided in the middle of the second floating layer 302, a second blocking cover 306 is installed in the second stepped hole 3021, the second blocking cover 306 is fixedly connected to the second fixed layer 301 by bolts, the upper end of the second blocking cover 306 is stuck on one of the steps of the second stepped hole 3021 to prevent the second floating layer 302 from separating from the second fixed layer 301; and there is an active gap between the lateral edge of the second blocking cover 306 and the inner contour of the second stepped hole 3021, and the active gap is generally 5 mm, so that the second floating layer 302 can move horizontally on the second fixed layer 301. The second mounting seat 303 is fixed on the second floating layer 302 by bolts, and the second zero point positioning system 304 is installed on the second mounting seat 303, and cooperates with the zero point pull nail 6 through the second zero point positioning system 304. A floating return to zero device 305 is installed in the second floating layer 302, and the floating return to zero device 305 includes a second pull-down oil cylinder 3051 and a second center pull rod 3052. A horizontal plate 3053 is formed on the upper end of the second center pull rod 3052, and a cone 3054 is formed on the lower end surface of the horizontal plate 3053. A tapered hole 3055 matching the cone 3054 is formed in the second stepped hole 3021, and the tapered hole 3055 is located above the second blocking cover 306. The horizontal peripheral side of the horizontal plate 3053 has a movable gap, so that the horizontal plate 3053 does not affect the horizontal movement of the second floating layer 302. The second center pull rod 3052 passes through the second blocking cover 306 and the second fixed layer 301 from top to bottom in sequence and is connected to the second pull-down cylinder 3051. When the second floating layer 302 needs to be forced to return to zero, the second pull-down cylinder 3051 pulls the second center pull rod 3052 downward, so that the cone 3054 on the horizontal plate 3053 moves downward, and the extruded cone hole 3055 is restored to the initial position of the same center of the cone 3054, so as to achieve the purpose of forced return to zero with high precision. When the second pull-down cylinder 3051 is in the loose state, the floating function of the zero point return to zero component 3 is in the open state, and it can float and adjust the center position of the sub-plate 5; when the second pull-down cylinder 3051 is in the pull-down locking state, the floating function of the zero point return to zero component 3 is in the closed state, and the second zero point positioning system 304 returns to zero at the same time, and is in the initial center position, so that the sub-plate 5 can be installed normally.Of course, a plurality of second spring 3073 zero return devices 307 are also centrally symmetrically installed in the second floating layer 302. The second spring 3073 zero return devices 307 include a second accommodating hole 3071 radially opened in the second floating layer 302, a second screw block 3072 threadedly connected in the second accommodating hole 3071, a second spring 3073 pressed on the second screw block 3072, and a second steel ball 3074 pressed toward the second fixed layer 301 by the second spring 3073. When the second floating layer 302 moves off the center, it will be subject to the elastic force of the squeezed second spring 3073. When the external force restriction is released, the position of the second floating layer 302 will be restored to the original zero position, but the accuracy is not high.

[0035] like Figure 8 As shown, in addition, a weight-reducing auxiliary support 8 is also installed on the motherboard 1, and the weight-reducing auxiliary support 8 includes a support base 801 fixed on the motherboard 1 by bolts, a plurality of guide posts 802 installed in the support base 801 so as to be movable up and down, a compression spring 803 installed below the guide post 802, a universal ball 804 installed above the guide post 802, and a cover plate 805 installed above the universal ball 804. When the sub-board 5 is placed, under the influence of gravity, the guide post 802 is subjected to the downward force of the sub-board 5, thereby displacing downward, and then squeezing the compression spring 803, and the force of the compression spring 803 is less than the gravity of the sub-board 5. When the sub-board 5 contacts the surface of the first zero-point positioning system 204 and the second zero-point positioning system 304, the guide post 802 no longer displaces. At this time, the compression spring 803 provides a part of the elastic force to offset a part of the gravity of the sub-board 5, and with the sliding of the universal ball 804, the sub-board 5 can smoothly adjust the center position. A plurality of third spring 8063 return-to-zero devices 806 are symmetrically installed on the side of the cover plate 805. The third spring 8063 return-to-zero devices 806 include a third accommodating hole 8061 radially opened along the cover plate 805, a third screw block 8062 threadedly connected to the third accommodating hole 8061, a third spring 8063 squeezed on the third screw block 8062, and a third steel ball 8064 pressed toward the supporting base 801 by the third spring 8063. When the position of the cover plate 805 is offset, the third spring 8063 on one side is squeezed to generate elastic force. After the external force is released, the third spring 8063 will also drive the cover plate 805 to return to its initial position, but the accuracy is not high.

[0036] like Fig. 9 As shown, a plurality of limit baffles 9 are also installed on the motherboard 1, and the limit baffles 9 include a baffle seat 901 fixed on the motherboard 1 by bolts, and a baffle 902 and a pressing nail 903 arranged on the baffle seat 901. The baffle 902 is hinged on the baffle seat 901, and the baffle 902 is used to guide the sub-board 5. At the same time, the baffle 902 can be rotated 90° in the vertical direction. When adjusting the sub-board 5, the baffle 902 can be put down to facilitate manual operation.

[0037] like Figure 1-3 As shown, one specific embodiment of a quick clamping fixture with adjustable center position is provided below, wherein a weight-reducing auxiliary support 8, five zero-point floating components 2, two zero-point return components 3, eight lateral auxiliary supports 4 and four limit baffles 9 are installed on the motherboard 1, one zero-point floating component 2 is located at the center of the weight-reducing auxiliary support 8, the remaining four zero-point floating components 2 and two zero-point return components 3 are evenly distributed on the periphery of the weight-reducing auxiliary support 8, the eight lateral auxiliary supports 4 are also evenly distributed on the periphery of the weight-reducing auxiliary support 8, and the four limit baffles 9 are evenly distributed on the edge of the motherboard 1. Seven zero-point pull nails 6 and eight auxiliary support blocks 7 are installed on the sub-board 5, the positions of the seven zero-point pull nails 6 correspond to the positions of the five zero-point floating components 2 and the two zero-point return components 3, and the positions of the eight auxiliary support blocks 7 correspond to the positions of the eight lateral auxiliary supports 4. After the sub-board 5 passes through the limit baffle 9, it is placed on the motherboard 1, and the weight-reducing auxiliary support 8 is compressed to make the weight-reducing auxiliary support 8 in a compressed state. Compressed air is introduced, and the first zero-point positioning system 204 and the second zero-point positioning system 304 are opened. The motherboard 1 and the sub-board 5 are connected through the first zero-point positioning system 204 and the second zero-point positioning system 304. The compressed air is disconnected, and the motherboard 1 and the sub-board 5 are locked. Since the five zero-point floating components 2 and the two zero-point return components 3 are not locked at this time, the sub-board 5 can still adjust the center of the circle. After the center of the sub-board 5 is manually adjusted, the hydraulic station provides hydraulic power to extend the eight hydraulic support cylinders on the eight lateral auxiliary supports 4 and contact the corresponding eight auxiliary support blocks 7. The hydraulic support cylinders are locked and do not move, thereby locking the sub-board 5 to prevent the sub-board 5 from moving horizontally. Then the first pull-down oil cylinder 2051 of the five-point zero-point floating assembly 2 is pulled down to lock the five-point zero-point floating assembly 2, and the floating function is turned off. At this time, the center position of the sub-plate 5 is the adjusted center position, which meets the use and processing requirements. After the processing is completed, compressed air is introduced, the first zero-point positioning system 204 and the second zero-point positioning system 304 are unlocked, and the sub-plate 5 is disassembled. Since the zero-point center position changes during adjustment, the installation of the next sub-plate 5 has a non-concentric problem. At this time, the second pull-down oil cylinder 3051 of the two-point zero-return assembly 3 is controlled to pull down, forcing the two positioning zero-point center positions to move to the correct position in the horizontal direction. At this time, the center of the tooling returns to the initial 0 position and can continue to be used normally.

[0038] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0039] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A quick clamping tool capable of adjusting the center position of a circle, characterized in that: include A motherboard (1); the motherboard (1) is provided with a plurality of zero-point floating components (2), a plurality of zero-point return components (3) and a plurality of lateral auxiliary supports (4); the zero-point floating components (2) comprise a first fixed layer (201), a first floating layer (202), a first mounting seat (203) and a first zero-point positioning system (204) which are arranged in sequence from bottom to top, the first fixed layer (201) being fixed on the motherboard (1), the first floating layer (202) being arranged horizontally slidably on the first fixed layer (201), the first mounting seat (203) being fixed on the first floating layer (202), the first zero-point positioning system (204) being arranged on the first mounting seat (203), and the first zero-point positioning system (204) being arranged on the first mounting seat (203). A floating locking device (205) is arranged in the first floating layer (202); the zero-point return-to-zero component (3) comprises a second fixed layer (301), a second floating layer (302), a second mounting seat (303) and a second zero-point positioning system (304) which are arranged in sequence from bottom to top, the second fixed layer (301) is fixed on the motherboard (1), the second floating layer (302) is arranged on the second fixed layer (301) in a horizontally slidable manner, the second mounting seat (303) is fixed on the second floating layer (302), the second zero-point positioning system (304) is arranged on the second mounting seat (303), and the second floating layer (302) is provided with a floating return-to-zero device (305); and A sub-plate (5); the sub-plate (5) is provided with a plurality of zero-point pull pins (6) and a plurality of auxiliary support blocks (7); the number of the zero-point pull pins (6) is equal to the sum of the number of the zero-point floating components (2) and the zero-point return components (3), and the zero-point pull pins (6) cooperate with the first zero-point positioning system (204) and the second zero-point positioning system (304); the number of the auxiliary support blocks (7) is equal to the number of the lateral auxiliary supports (4), and the auxiliary support blocks (7) cooperate with the lateral auxiliary supports (4).

2. The quick clamping tool with adjustable center position according to claim 1, characterized in that: A first stepped hole (2021) is provided in the middle of the first floating layer (202), a first blocking cover (206) is provided in the first stepped hole (2021), the first blocking cover (206) is fixedly connected to the first fixed layer (201), an upper end of the first blocking cover (206) is clamped on one of the steps of the first stepped hole (2021), and a movable gap is provided between a lateral edge of the first blocking cover (206) and an inner contour of the first stepped hole (2021).

3. The quick clamping tool with adjustable center position according to claim 2, characterized in that: The floating locking device (205) comprises a first pull-down cylinder (2051), a first center pull rod (2052) and a pressure plate (2053); the first step hole (2021) comprises at least two steps, and the pressure plate (2053) is arranged on one of the steps above the first blocking cover (206); an enlarged head (2054) is formed at the upper end of the first center pull rod (2052), and the first center pull rod (2052) passes through the pressure plate (2053), the first blocking cover (206) and the first fixing layer (201) from top to bottom in sequence and is connected to the first pull-down cylinder (2051); the enlarged head (2054) and the pressure plate (2053) have a movable gap on their lateral sides.

4. The quick clamping tool with adjustable center position according to claim 3, characterized in that: A plurality of first spring zero return devices (207) are also centrally symmetrically arranged in the first floating layer (202), the first spring zero return devices (207) comprising a first accommodating hole (2071) radially opened in the first floating layer (202), a first screw block (2072) threadedly connected in the first accommodating hole (2071), a first spring (2073) pressed on the first screw block (2072), and a first steel ball (2074) pressed toward the first fixed layer (201) by the first spring (2073).

5. The quick clamping tool with adjustable center position according to claim 1, characterized in that: A second stepped hole (3021) is provided in the middle of the second floating layer (302), a second blocking cover (306) is provided in the second stepped hole (3021), the second blocking cover (306) is fixedly connected to the second fixed layer (301), an upper end of the second blocking cover (306) is clamped on one of the steps of the second stepped hole (3021), and a movable gap is provided between a lateral edge of the second blocking cover (306) and an inner contour of the second stepped hole (3021).

6. The quick clamping tool with adjustable center position according to claim 5, characterized in that: The floating return to zero device (305) includes a second pull-down cylinder (3051) and a second center pull rod (3052), the upper end of the second center pull rod (3052) is formed with a transverse plate (3053), the lower end surface of the transverse plate (3053) is formed with a cone (3054), the second stepped hole (3021) is formed with a conical hole (3055) matching the cone (3054), and the conical hole (3055) is located above the second blocking cover (306); the second center pull rod (3052) passes through the second blocking cover (306) and the second fixed layer (301) from top to bottom in sequence and is connected to the second pull-down cylinder (3051); the lateral circumferential side of the transverse plate (3053) has a movable gap.

7. The quick clamping tool with adjustable center position according to claim 6, characterized in that: A plurality of second spring zero return devices (307) are also centrally symmetrically arranged in the second floating layer (302), the second spring zero return devices (307) comprising a second accommodating hole (3071) radially opened in the second floating layer (302), a second screw block (3072) threadedly connected in the second accommodating hole (3071), a second spring (3073) pressed on the second screw block (3072), and a second steel ball (3074) pressed toward the second fixed layer (301) by the second spring (3073).

8. The quick clamping tool with adjustable center position according to claim 1, characterized in that: The motherboard (1) is also provided with a weight-reducing auxiliary support (8); the weight-reducing auxiliary support (8) comprises a support base (801) fixed on the motherboard (1), a plurality of guide posts (802) arranged in the support base (801) so as to be movable up and down, a compression spring (803) arranged below the guide posts (802), a universal ball (804) arranged above the guide posts (802), and a cover plate (805) arranged above the universal ball (804).

9. The quick clamping tool with adjustable center position according to claim 8, characterized in that: A plurality of third spring zero return devices (806) are symmetrically arranged on the side surface of the cover plate (805), and the third spring zero return devices (806) include a third accommodating hole (8061) radially opened on the cover plate (805), a third screw block (8062) threadedly connected in the third accommodating hole (8061), a third spring (8063) pressed on the third screw block (8062), and a third steel ball (8064) pressed toward the support base (801) by the third spring (8063).

10. The quick clamping tool with adjustable center position according to claim 1, characterized in that: A plurality of limit baffles (9) are also provided on the motherboard (1), and the limit baffles (9) comprise a baffle seat (901) fixed on the motherboard (1), and a baffle (902) and a pressing pin (903) provided on the baffle seat (901).

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