Positioning and clamping device and milling groove machining center

Abstract

The utility model relates to a positioning and clamping device and a milling groove machining center. The positioning and clamping device comprises a base, a lifting mechanism and a pushing and pressing mechanism. One end of the base extends upwards to form a positioning seat, and the other end is provided with a mounting seat; the mounting seat is provided with a first positioning piece extending towards the positioning seat, the positioning seat is provided with a second positioning piece extending towards the mounting seat, and the bottom surface of the first positioning piece and the bottom surface of the second positioning piece form a positioning plane; the lifting mechanism is arranged on the base, is provided with a supporting surface which is lifted upwards and is used for lifting a workpiece placed on the supporting surface, so that the top surface of the workpiece is limited on the positioning plane; the pushing and pressing mechanism is arranged on the mounting base and comprises a pushing and pressing piece used for pushing and pressing the workpiece to be limited on the side wall of the positioning base. Due to the fact that the ground of the first positioning piece and the ground of the second positioning piece form the positioning plane, the workpiece can be clamped, fixed and limited on the positioning plane and the side wall through the lifting mechanism and the pushing and pressing mechanism, and the precision and quality of the machined workpiece are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing, and in particular relates to a positioning and clamping device. Background Art

[0002] Machining using machining centers to process workpieces is a very common processing method in the current mechanical processing field. Currently, in the woodworking industry, machining centers are also widely used to process wood and the like. When using a machining center to process a workpiece, the workpiece needs to be positioned and clamped first. The clamping devices commonly used in machining centers generally include flat-nose pliers, locking screws, and special fixtures. When the workpiece is being processed, the bottom surface is supported on the fixture, and then the fixture clamps the workpiece.

[0003] For example, the Chinese patent document with publication number CN217020809U discloses a clamping device for wooden box processing, which is used to position and clamp the wooden box during wooden box processing; it includes: a processing table, a support arm, a clamping mechanism and a processing plate, a groove is opened in the middle of the upper surface of the processing table, a hydraulic press is installed inside the groove, another group of hydraulic presses is arranged in the middle of the rear surface of the processing table, the hydraulic press is fixedly connected to the processing table, a support arm is arranged above the hydraulic press, the support arm is movably connected to the hydraulic press, a clamping mechanism is arranged above the workbench, the clamping mechanism is movably connected to the hydraulic press through a second lifting column, a processing plate is arranged in the groove on the upper surface of the processing table, first lifting columns are respectively arranged at the four corners of the lower surface of the processing plate, the upper end of the first lifting column is fixedly connected to the processing plate, and the lower end of the first lifting column is movably connected to the hydraulic press in the processing table. By adding a connecting block, the connecting block is composed of a square block structure and a cylindrical structure. By opening a mounting groove on the support arm, the mounting groove is a square structure, and the square block of the connecting block just matches the mounting groove structure. The cylindrical structure of the connecting block can rotate in the mounting groove. The clamping mechanism is connected to the support arm through the connecting block. The clamping mechanism can be quickly rotated through the connecting block, so that the wooden box can be rotated and turned over during the clamping process.

[0004] In the technical solution of the above patent document, when clamping the wooden box, it is necessary to support the workpiece on the processing plate, and support the bottom of the wooden box through the processing plate; then the wooden box is clamped by the clamping mechanism, so the bottom surface of the wooden box is used as the processing positioning reference during processing. Since there will be errors in the height of each wooden box after the wooden box is assembled, and there is also a certain amount of deformation of the wooden box, there will be certain errors in the height of each wooden box. Therefore, when the bottom surface of the wooden box is used as the positioning reference, the height position of the top surface of each wooden box will not be on the same horizontal plane. When milling grooves, drilling holes and other cutting processes are performed on the top surface of the wooden box, there will be deviations in the groove depth and hole depth; the processing accuracy of the wooden box is reduced. Utility Model Content

[0005] The utility model aims to provide a positioning clamping device to solve the problem in the existing clamping technology that the top surface height of each workpiece is deviated, so the groove depth and hole depth of the groove or hole drilled on the top surface are inconsistent.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a positioning and clamping device, including a base, a lifting mechanism and a pushing mechanism; a positioning seat is extended upward at one end of the base, and a mounting seat is provided at the other end; the mounting seat is provided with a first positioning member extending toward the positioning seat, and the positioning seat is provided with a second positioning member extending toward the mounting seat, and the bottom surfaces of the first positioning member and the second positioning member form a positioning plane; the lifting mechanism is arranged on the base, and the lifting mechanism has a supporting surface that lifts upward, for lifting a workpiece placed on the supporting surface, so that the top surface of the workpiece is limited to the positioning plane; the pushing mechanism is arranged on the mounting seat, and the pushing mechanism includes a pushing member, for pushing the workpiece to be limited to the side wall of the positioning seat.

[0007] Furthermore, two support blocks are provided on the inner side of the positioning seat for supporting and limiting the ends of the workpiece; and the support blocks are adjustably mounted on the inner side of the positioning seat.

[0008] Furthermore, it also includes a centering clamping mechanism, which is arranged on the positioning seat; the centering clamping mechanism includes a first clamping jaw and a second clamping jaw, and the first clamping jaw and / or the second clamping jaw move toward one side of the workpiece so that the first clamping jaw and the second clamping jaw are limited on both sides of the workpiece.

[0009] Furthermore, the centering clamping mechanism also includes a screw, a first movable seat and a second movable seat; a mounting portion is provided on the outer side of the positioning seat, the screw is rotatably connected to the mounting portion, one end of the screw is provided with a left-handed thread, and the other end is provided with a right-handed thread; the first movable seat and the second movable seat are slidably connected to the outer side of the positioning seat, the first movable seat is provided with a left-handed nut sleeved on the left-handed thread, and the second movable seat is provided with a right-handed nut sleeved on the right-handed thread; the first clamp is provided on the first movable seat, and the second clamp is provided on the second movable seat.

[0010] Furthermore, the lifting mechanism includes two groups of lifting cylinders, the two groups of lifting cylinders are arranged on both sides of the base, the top side of the lifting cylinders is provided with a support plate, and the top of the support plate forms the support surface.

[0011] Furthermore, the mounting seat can be slidably connected to the base away from or close to the positioning seat; a through groove is provided on the base, and a connecting hole is provided on the mounting seat, and a locking screw passes through the through groove from the bottom side of the through groove and is connected to the connecting hole.

[0012] Furthermore, a mounting position is provided in the mounting seat, and the pushing mechanism is provided in the mounting position; the pushing mechanism includes a pushing driving member and the pushing member, a mounting plate is provided in the mounting position, the pushing driving member is provided on the mounting plate, and the pushing member is provided on the pushing driving member.

[0013] Furthermore, a slide groove is provided on the inner side of the mounting seat, and two first positioning members are provided in the slide groove; a plurality of sets of screw holes are provided on the top side of the positioning seat, and two second positioning members are provided on the top side of the positioning seat.

[0014] The above one or more technical solutions in the positioning and clamping device provided by the embodiment of the utility model have at least the following technical effects:

[0015] In this positioning and clamping device, since the first positioning member of the mounting seat and the second positioning member of the positioning seat form a positioning plane, the lifting mechanism has an upwardly lifting support surface for lifting the workpiece placed on the support surface, and the top surface of the workpiece can be limited to the positioning plane. When clamping the workpiece, the workpiece can be placed on the support surface of the lifting mechanism, and the lifting mechanism lifts the workpiece upward, and the top surface of the workpiece is limited to the positioning plane formed by the first positioning member and the second positioning member; then the pushing member of the pushing mechanism limits the end of the workpiece to the side of the positioning seat, thereby positioning and clamping the workpiece. Since this positioning and clamping device uses the top surface of the workpiece as the positioning reference for processing, when processing the grooves and holes on the top surface, the groove depth and hole depth can be ensured, thereby ensuring the improvement of the processing accuracy of the wooden box.

[0016] A slot milling machining center comprises a positioning and clamping device. The slot milling machining center has a fixed workbench, and the positioning and clamping device is arranged on the workbench.

[0017] Furthermore, a plurality of groups of the positioning and clamping devices are arranged on the workbench and are arranged sequentially along a straight line.

[0018] The above one or more technical solutions in the slot milling machining center provided by the embodiment of the utility model have at least the following technical effects:

[0019] The slot milling machining center positions and clamps the workpiece to be processed on the positioning and clamping device, and then the slot milling machining center completes the processing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A three-dimensional schematic diagram of a slot milling machining center provided in an embodiment of the utility model.

[0022] Figure 2 This is a structural diagram of a positioning and clamping device for clamping a workpiece provided in an embodiment of the utility model.

[0023] Figure 3 This is a structural diagram of the other side of the positioning and clamping device provided in an embodiment of the utility model for clamping a workpiece.

[0024] Figure 4 A three-dimensional diagram of a positioning and clamping device provided in an embodiment of the utility model.

[0025] Figure 5 A three-dimensional view of the other side of the positioning and clamping device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] In one embodiment of the slot milling processing center of the utility model, please refer to Figure 1 The slot milling machining center includes a positioning and clamping device 1 for positioning and clamping a workpiece. The slot milling machining center has a fixed workbench 2, and the positioning and clamping device 1 is arranged on the workbench 2. The workpiece 3 to be processed can be positioned and clamped on the positioning and clamping device 1, so the workpiece can be milled by the slot milling machining center.

[0031] The positioning and clamping device 1 includes a base 100, a lifting mechanism 200 and a pushing mechanism 300. Figures 2 to 5, a positioning seat 500 is extended upward at one end of the base 100, and a mounting seat 400 is provided at the other end. The mounting seat 400 is provided with a first positioning member 410 extending toward the positioning seat 500, and the positioning seat 500 is provided with a second positioning member 510 extending toward the mounting seat 400, and the bottom surfaces of the first positioning member 410 and the second positioning member 510 form a positioning plane, and the positioning plane can limit the top surface of the workpiece. The lifting mechanism 200 is arranged on the base 100, and the lifting mechanism 200 has an upwardly lifting support surface 201, which is used to lift the workpiece 3 placed on the support surface so that the top surface of the workpiece 3 is limited to the positioning plane. Specifically, the workpiece 3 to be processed is placed on the support surface 201, and the support surface 201 of the lifting mechanism 200 is lifted upward, so that the top of the workpiece 3 abuts against the bottom of the first positioning member 410 and the second positioning member 510, thereby realizing the use of the top surface of the workpiece 4 as the reference surface for processing. The pushing mechanism 300 is arranged on the mounting seat 400, and the pushing mechanism 300 includes a pushing member 310, which is used to push the workpiece 3 to be limited on the side wall of the positioning seat 500, so as to realize the positioning and clamping of the workpiece 3. Specifically, when positioning and clamping the workpiece, the workpiece 3 is placed on the supporting surface 201 of the lifting mechanism 200, and the lifting mechanism 200 pushes the workpiece 3 to lift upward, so that the top surface of the workpiece 3 is limited at the bottom of the first positioning member 410 and the second positioning member 510. The pushing member 310 of the pushing mechanism 300 pushes one end of the workpiece 3, and the other end of the workpiece 3 is limited on the side of the positioning seat 500, so as to press the workpiece 3. Therefore, the top of the workpiece can be processed by the milling machining center, so that the groove depth and hole depth of the top surface of the workpiece can be ensured, and the machining accuracy can be ensured. In addition, regardless of the size and height of the workpiece 3, the positioning reference of the machining can be ensured to remain unchanged; therefore, even if the machining program is changed, it is not necessary to re-calibrate the cutting tool, which reduces the workload of the operator.

[0032] For further information, please refer to Figure 4 , two support blocks 520 are provided on the inner side of the positioning seat 500, which are used to support and limit the end of the workpiece 3. The support block 520 is adjustably installed on the inner side of the positioning seat 500. Specifically, a row of screw holes is provided on the inner side of the positioning seat 500, and the support block 520 can be locked in the corresponding screw holes according to the position requirements. Thereby, adjustability is achieved. When the pushing mechanism 300 pushes the workpiece 3 and limits it on the side wall of the positioning seat 500, the end of the workpiece 3 is in contact with the two support blocks 520 of the positioning seat 500, reducing the contact area between the workpiece 3 and the positioning seat 500; and increasing the stability of the positioning of the end of the workpiece 3.

[0033] Further, refer to Figures 2 to 5The positioning and clamping device 1 further includes a centering clamping mechanism 600, which is disposed on the positioning seat 500 and is used to position the two sides of the workpiece 3. Specifically, the centering clamping mechanism 600 includes a first clamping jaw 610 and a second clamping jaw 620, and the first clamping jaw 610 and / or the second clamping jaw 620 move toward one side of the workpiece 3, so that the first clamping jaw 610 and the second clamping jaw 620 are limited on both sides of the workpiece 3. In this embodiment, after the workpiece 3 is positioned on the support surface 201, it can be moved by the first clamping jaw 610 or the second clamping jaw 620 of the centering clamping mechanism 600, so that the side of the workpiece can be positioned by the first clamping jaw 610 and the second clamping jaw 620, thereby positioning the center position of the workpiece 3.

[0034] Furthermore, refer to Figures 2 to 5 , the centering clamping mechanism 600 also includes a screw 630, a first movable seat 640 and a second movable seat 650. A mounting portion 501 is provided on the outer side of the positioning seat 500, and the screw 630 is rotatably connected to the mounting portion 501. One end of the screw 630 is provided with a left-handed thread and the other end is provided with a right-handed thread; the first movable seat 640 and the second movable seat 650 are slidably connected to the outer side of the positioning seat 500, the first movable seat 640 is provided with a left-handed nut 641 sleeved on the left-handed thread, and the second movable seat 650 is provided with a right-handed nut 651 sleeved on the right-handed thread. The first clamping jaw 610 is provided on the first movable seat 640, and the second clamping jaw 620 is provided on the second movable seat 650. In this embodiment, the screw 630 can be manual or connected to a motor, and the motor drives the screw 630 to rotate. During the rotation of the screw rod 630 , the left-handed nut 641 and the right-handed nut 651 cooperate with the screw rod 630 to push the first movable seat 640 and the second movable seat 650 to move toward each other, so that the first clamping jaw 610 and the second clamping jaw 620 can be limited on both sides of the workpiece 3 .

[0035] Further, refer to Figure 4 The lifting mechanism 200 includes two sets of lifting driving members 210, which are arranged on both sides of the base 100. A support plate 220 is arranged on the top side of the lifting driving member 210, and the top of the support plate 220 forms a support surface 201. The lifting driving member 220 can be a driving member such as a cylinder, an electric cylinder, a hydraulic cylinder, or a manual cam connecting rod mechanism. By driving the support plate 220 on the top side by the two sets of lifting driving members 210, the workpiece 3 can be lifted and its top surface can be limited to the positioning plane, so as to realize the positioning of the top surface of the workpiece 3.

[0036] further, Figure 2 and Figure 4, the mounting seat 400 can be slidably connected to the base 100 away from or close to the positioning seat 500. Specifically, a through slot 101 is provided on the base 100, and a connecting hole 401 is provided on the mounting seat 400. The locking screw passes through the through slot 101 from the bottom side of the through slot 101 and is connected to the connecting hole 401. Therefore, the position of the mounting seat 400 can be adjusted according to the size of the workpiece 3 to be processed, so that the positioning and clamping device 1 of this embodiment can position and clamp workpieces 3 of different sizes.

[0037] For further information, please refer to Figure 2 and Figure 4 , a mounting position 402 is provided in the mounting seat 400, and the pushing mechanism 300 is provided in the mounting position 402. The pushing mechanism 300 includes a pushing driving member 320 and a pushing member 310, a mounting plate 403 is provided in the mounting position 402, the pushing driving member 320 is provided on the mounting plate 403, and the pushing member 310 is provided on the pushing driving member 320. The pushing driving member 30 can be a driving member such as a cylinder, an electric cylinder, a hydraulic cylinder, or a manual cam crank connecting rod, and the pushing driving member 320 pushes the pushing member 310 to be pushed out in the direction of the workpiece 3, so that the workpiece 3 can be limited to the side wall of the positioning seat 500, and the workpiece 3 can be fixed and clamped.

[0038] Further, refer to Figure 3 A slide groove 404 is provided on the inner side of the mounting seat 400, and two first positioning members 410 are provided in the slide groove 404. The two first positioning members 410 are positioned in the slide groove 404, and the positions of the two first positioning members 410 can be adjusted according to requirements. A plurality of sets of screw holes are provided on the top side of the positioning seat 500, and two second positioning members 510 are provided on the top side of the positioning seat 500, and the second positioning members 510 can be locked in different screw holes, thereby adjusting the positions and spacing of the two second positioning members 510.

[0039] Furthermore, a plurality of positioning and clamping devices 1 are arranged on the workbench 2 and arranged in sequence along a straight line. Figure 1 , the workbench is provided with multiple sets of positioning and clamping devices 1. In this embodiment, the slot milling machining center can continuously process workpieces 3 of the same specification and / or different specifications. Specifically, when the slot milling machining center processes the workpiece 4 of the next positioning and clamping device 1, the operator can remove the workpiece 3 processed by the previous positioning and clamping device 1 and re-place the new workpiece 3 to be processed, thereby improving production efficiency and reducing costs.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning and clamping device, characterized in that: It includes a base, a lifting mechanism and a pushing mechanism; a positioning seat is extended upward at one end of the base, and a mounting seat is provided at the other end; the mounting seat is provided with a first positioning member extending toward the positioning seat, and the positioning seat is provided with a second positioning member extending toward the mounting seat, and the bottom surfaces of the first positioning member and the second positioning member form a positioning plane; the lifting mechanism is arranged on the base, and the lifting mechanism has a supporting surface that lifts upward, which is used to lift the workpiece placed on the supporting surface so that the top surface of the workpiece is limited to the positioning plane; the pushing mechanism is arranged on the mounting seat, and the pushing mechanism includes a pushing member, which is used to push the workpiece to be limited to the side wall of the positioning seat.

2. The positioning and clamping device according to claim 1, characterized in that: Two support blocks are arranged on the inner side of the positioning seat for supporting and limiting the ends of the workpiece; the support blocks are adjustably mounted on the inner side of the positioning seat.

3. The positioning and clamping device according to claim 1, characterized in that: It also includes a centering clamping mechanism, which is arranged on the positioning seat; the centering clamping mechanism includes a first clamping jaw and a second clamping jaw, and the first clamping jaw and / or the second clamping jaw move toward one side of the workpiece so that the first clamping jaw and the second clamping jaw are limited on both sides of the workpiece.

4. The positioning and clamping device according to claim 3, characterized in that: The centering clamping mechanism also includes a screw, a first movable seat and a second movable seat; a mounting portion is provided on the outer side of the positioning seat, the screw is rotatably connected to the mounting portion, one end of the screw is provided with a left-handed thread, and the other end is provided with a right-handed thread; the first movable seat and the second movable seat are slidably connected to the outer side of the positioning seat, the first movable seat is provided with a left-handed nut sleeved on the left-handed thread, and the second movable seat is provided with a right-handed nut sleeved on the right-handed thread; the first clamping jaw is provided on the first movable seat, and the second clamping jaw is provided on the second movable seat.

5. The positioning and clamping device according to any one of claims 1 to 4, characterized in that: The lifting mechanism comprises two groups of lifting driving members, the two groups of lifting driving members are arranged on both sides of the base, a support plate is arranged on the top side of the lifting driving members, and the top of the support plate forms the support surface.

6. The positioning and clamping device according to any one of claims 1 to 4, characterized in that: The mounting seat can be slidably connected to the base away from or close to the positioning seat; a through slot is provided on the base, and a connecting hole is provided on the mounting seat. A locking screw passes through the through slot from the bottom side of the through slot and is connected to the connecting hole.

7. The positioning and clamping device according to claim 1, characterized in that: A mounting position is provided in the mounting seat, and the pushing mechanism is provided in the mounting position; the pushing mechanism includes a pushing driving member and the pushing member, a mounting plate is provided in the mounting position, the pushing driving member is provided on the mounting plate, and the pushing member is provided on the pushing driving member.

8. The positioning and clamping device according to claim 1, characterized in that: A slide groove is provided on the inner side of the mounting seat, and two first positioning members are provided in the slide groove; a plurality of groups of screw holes are provided on the top side of the positioning seat, and two second positioning members are provided on the top side of the positioning seat.

9. A slot milling machining center, characterized in that: It comprises the positioning and clamping device according to any one of claims 1 to 8, the slot milling machining center has a fixed workbench, and the positioning and clamping device is arranged on the workbench.

10. The slot milling machining center according to claim 9, characterized in that: A plurality of positioning and clamping devices are arranged on the workbench and are arranged in sequence along a straight line.

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