Workpiece clamping jig for machining center

Abstract

The utility model belongs to the technical field of machining clamping, and particularly relates to a workpiece clamping jig for a machining center, which comprises a machining table, an adjusting structure mounted at the top of the machining table, a clamping structure mounted at the top of the adjusting structure, and cooling structures mounted at the left end and the right end of the middle of the top surface of the machining table. The adjusting unit is arranged at the bottom of the outer surface and the top end in the limiting unit and comprises an asynchronous motor, the output end of the asynchronous motor is connected with a worm, the outer surface of the worm is connected with a gear ring, the top end of the gear ring is connected with a gear, a threaded rod is installed in the middle of one side of the gear, and a sliding block is connected to the middle of the outer surface of the threaded rod. According to the workpiece clamping jig for the machining center, the asynchronous motor is started to drive the worm and the gear ring to conduct transmission, the gear ring is used for driving the gear and the threaded rod to rotate, accordingly, the sliding block drives the moving block and the clamping block to conduct center positioning and clamping on a product, and the clamping stability can be effectively guaranteed through the self-locking performance of worm connection.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining clamping technical field, concretely is a workpiece clamping fixture for machining center. BACKGROUND

[0002] With the iteration of machining technology, the tooling fixture of machining center also has many changes to adapt to the actual demand, such as flat plate fixture, mechanical fixture, pneumatic fixture, hydraulic fixture and magnetic fixture etc.

[0003] But these fixtures can only adapt to regular-shaped workpieces when using, when some special-shaped workpieces such as ellipsoidal workpieces are machined, the traditional tooling fixture can only adapt to the clamping of plane or angle point, and cannot well fix the special-shaped workpiece, so that the workpiece position is easily changed under stress during the rear-end machining, thereby causing the failure of clamping function and the damage of workpiece.

[0004] As disclosed in Chinese patent CN221967434U, a workpiece clamping fixture for machining center is provided, which comprises a workbench, an opening is arranged in the middle of the workbench, a lifting pad is arranged at the opening position, a plurality of sliding grooves are arranged on the side of the workbench and point to the opening, and a clamp assembly for clamping the workpiece is arranged in the sliding groove; the clamp assembly comprises a shell and a bag arranged in the shell, the outer surface of the bag is exposed to the side pointing to the opening, the bag is filled with frozen liquid, and a cooling mechanism for freezing the frozen liquid is arranged on the shell; the workpiece of various special shapes can be clamped, the clamping and fixing effect is good, the special-shaped workpiece is prevented from loosening during machining, and the clamping fixture has excellent adaptability and reliable fixing effect.

[0005] However, in the prior art, the workpiece needs to be centrally positioned and clamped during clamping and fixing, so as to ensure the machining precision during machining.

[0006] Therefore, it is urgent to provide a workpiece clamping fixture for machining center. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a workpiece clamping fixture for machining center to solve the problem that in the prior art, the workpiece needs to be centrally positioned and clamped during clamping and fixing, so as to ensure the machining precision during machining.

[0008] To achieve the above object, the utility model provides the following technical scheme: a workpiece clamping fixture for machining center, comprising a machining table, an adjusting structure is installed on the top of the machining table, a clamping structure is installed on the top of the adjusting structure, and a cooling structure is installed on the top surface of the machining table.

[0009] The adjusting structure comprises an adjusting unit and a limiting unit, and the adjusting unit is arranged at the bottom of the outer surface of the limiting unit and the top of the inner surface of the limiting unit.

[0010] The adjusting unit comprises an asynchronous motor, the output end of the asynchronous motor is connected with a worm, the outer surface of the worm is connected with a gear ring, the top of the gear ring is connected with a gear, the middle of one side of the gear is provided with a threaded rod, and the outer surface of the threaded rod is connected with a sliding block.

[0011] Preferably, the limiting unit comprises a limiting block, the outer surface of the limiting block is connected with a clamping table, and the outer surface of the clamping table is connected with the outer surface of the limiting block in sliding mode through a convex annular groove arranged near the bottom end.

[0012] Preferably, the bottom surface of the asynchronous motor is detachably connected with the top of the machining table, the outer surface of the worm is meshingly connected with the outer surface of the gear ring near the bottom end, the outer surface of the gear is meshingly connected with the top surface of the gear ring, the limiting block is fixedly arranged on the inner wall of the gear ring, the outer surface of the threaded rod is rotatably connected with the outer surface of the clamping table in a circular hole arranged near the end of the gear without thread, the outer surface of the threaded rod is screw-connected with the middle of the sliding block, and the outer surface of the sliding block is slidably connected with the clamping table in a convex groove. The bottom surface of the clamping table is fixedly connected with the middle of the top surface of the machining table, and the bottom surface of the gear ring is slidably connected with the top surface of the machining table.

[0013] Preferably, the clamping structure comprises a moving block, a connecting block is clamped in a clamping groove arranged in the top of the moving block, a clamping block is arranged on the side of the connecting block away from the moving block, a threaded cylinder is fixedly arranged in the middle of the side of the connecting block close to the moving block, and a fixing bolt is screw-connected in the threaded cylinder.

[0014] Preferably, the bottom end of the moving block is fixedly connected with the top end of the sliding block, and the outer surface of the fixing bolt is screw-connected with the threaded hole arranged in the middle of the moving block. The clamping block can be replaced according to the shape of the clamped product, and the side close to each other of the four clamping blocks is provided with an antiskid layer.

[0015] Preferably, the cooling structure comprises a liquid tank, a refrigerating device is arranged in the middle of the side of each liquid tank away from each other, a liquid injection port is arranged in the middle of the front of each liquid tank close to the top end, a mounting rack is arranged in the middle of the side of each liquid tank close to each other, and a fan is arranged in the mounting rack.

[0016] Preferably, the bottom end of each liquid tank is fixedly connected with the middle of the top surface of the machining table close to the left and right ends, and the refrigerating surface of the refrigerating device is abutted against the middle of the side of each liquid tank away from each other. The liquid tank can be injected with cooling liquid through the liquid injection port, and the refrigerating device is a semiconductor refrigerating device in the prior art.

[0017] Compared with the prior art, the adjusting structure has the advantages that:

[0018] 1. The machining center workpiece clamping jig, by adjusting the structure of the setting, starting asynchronous motor drive worm and gear ring transmission, thus using the gear ring drive gear and threaded rod rotation, so that the slider drive moving block and clamping block of the product center positioning clamping, and using the self-locking of worm connection, can effectively guarantee the stability of clamping.

[0019] 2. The machining center workpiece clamping jig, by adjusting the structure of the setting, using the refrigerator to guide the cooling of the liquid tank inside the cooling liquid, so that the liquid tank transmits the cold quantity, and uses the fan to blow the cold quantity, effectively cooling the workpiece in the processing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic view of the utility model;

[0021] Figure 2 It is the internal structure schematic view of the utility model;

[0022] Figure 3 It is the internal structure of the clamping adjusting structure of the utility model enlarged view;

[0023] Figure 4 It is the internal split enlarged view of the clamping structure of the utility model;

[0024] Figure 5 It is the cooling structure enlarged view of the utility model.

[0025] In the drawing: 1, machining table; 101, asynchronous motor; 102, worm; 103, gear ring; 104, limit block; 105, clamping table; 106, gear; 107, threaded rod; 108, slider; 201, moving block; 202, connecting block; 203, clamping block; 204, threaded cylinder; 205, fixed bolt; 301, liquid tank; 302, refrigerator; 303, liquid injection port; 304, mounting frame; 305, fan. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] Please refer to Figures 1-5 The utility model provides a technical scheme: EMBODIMENT

[0028] The utility model provides a workpiece clamping fixture for machining center, including processing platform 1, the top of processing platform 1 is equipped with adjusting structure, adjusting structure top is equipped with clamping structure, and the top surface middle part of processing platform 1 is installed with cooling structure left and right ends.

[0029] Adjusting structure includes adjusting unit and limiting unit, adjusting unit is arranged at the bottom of the outer surface of limiting unit and the top end inside, adjusting unit includes asynchronous motor 101, the output end of asynchronous motor 101 is connected with worm 102, the outer surface of worm 102 is connected with gear ring 103, the top end of gear ring 103 is connected with gear 106, the middle part of one side of gear 106 is installed with threaded rod 107, the middle part of the outer surface of threaded rod 107 is connected with sliding block 108.Limiting unit includes limiting block 104, limiting block 104 outer surface is connected with clamping table 105, and the outer surface of clamping table 105 is close to the bottom and is provided with convex annular groove inner wall and limiting block 104 outer surface sliding connection.

[0030] The bottom surface of asynchronous motor 101 is detachably connected with the top of processing platform 1, the outer surface of worm 102 is meshedly connected with the outer surface of gear ring 103 close to the bottom, the outer surface of gear 106 is meshedly connected with the top surface of gear ring 103, limiting block 104 is fixedly installed in the inner wall of gear ring 103, the outer surface of threaded rod 107 is rotatably connected with the inside of the circular hole of the outer surface of clamping table 105 close to the non-threaded end of gear 106, the outer surface of threaded rod 107 is screw-connected with the middle part of sliding block 108, and the outer surface of sliding block 108 is slidingly connected with the inside of the convex slot of clamping table 105.

[0031] Clamping structure includes moving block 201, the top of moving block 201 is provided with connecting block 202 in the inside of clamping groove, the side, away from moving block 201, of connecting block 202 is installed with clamping block 203, the middle part of the side, close to moving block 201, of connecting block 202 is fixedly installed with threaded cylinder 204, and threaded cylinder 204 is screw-connected with fixed peg 205 in the inside.

[0032] Through the setting of adjusting structure, asynchronous motor 101 drives worm 102 and gear ring 103 to drive, so as to drive gear 106 and threaded rod 107 to rotate by gear ring 103, so that sliding block 108 drives moving block 201 and clamping block 203 to center positioning and clamping the product, and the self-locking property of worm 102 can effectively guarantee the stability of clamping.

[0033] When the workpiece is centrally positioned and clamped, the asynchronous motor 101 is started to drive the worm 102 to rotate, the outer surface of the worm 102 is meshingly connected with the outer surface of the gear ring 103 close to the bottom end, and the gear ring 103 is slidingly connected with the outer surface of the clamping table 105 close to the bottom end in the inner wall of the convex annular groove, so that the gear ring 103 rotates, the top of the gear ring 103 is meshingly connected with the outer surfaces of the four gears 106, so as to simultaneously drive the four gears 106 and the threaded rod 107 to rotate, the sliding block 108 is threadedly connected with the outer surface of the threaded rod 107, so that the four sliding blocks 108 drive the four moving blocks 201 to approach or move away from each other, thereby driving the clamping block 203 to complete the central positioning and clamping of the workpiece. After clamping and fixing, the self-locking function of the worm 102 is used to ensure the stability during machining, and when clamping, the clamping block 202 and the moving block 201 are clamped, and the fixed bolt 205 and the threaded cylinder 204 are threadedly connected, so as to ensure the stability of the connection between the clamping block 202 and the moving block 201, thereby facilitating the disassembly and replacement of the clamping block 202 and the clamping block 203. The clamping block 203 is selected and used for clamping and fixing, and the clamping effect is better. Embodiment

[0034] On the basis of embodiment one, the cooling structure comprises two liquid tanks 301, a refrigerating device 302 is installed in the middle of one side of the two liquid tanks 301 away from each other, a liquid injection port 303 is installed in the middle of the front of the liquid tank 301 close to the top, a mounting bracket 304 is installed in the middle of one side of the two liquid tanks 301 close to each other, and a fan 305 is installed inside the mounting bracket 304. The bottom end of the liquid tank 301 is fixedly connected with the middle of the top surface of the machining table 1 close to the left and right ends, and the refrigeration surface of the refrigerating device 302 abuts against the middle of one side of the two liquid tanks 301 away from each other.

[0035] Through the setting of the cooling structure, the cooling liquid in the liquid tank 301 is cooled by the refrigerating device 302, so that the liquid tank 301 transmits the cold energy, and the fan 305 blows the cold energy, effectively cooling the workpiece during machining.

[0036] When the workpiece is clamped and machined, the cooling liquid is injected into the liquid tank 301 through the liquid injection port 303, and then the refrigerating device 302 is started to refrigerate the cooling liquid in the liquid tank 301, thereby transmitting the cold energy by the cooling liquid in the liquid tank 301, and then the fan 305 blows the cold energy, thereby cooling the workpiece during machining.

[0037] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are used herein merely as labels, and are not intended to impose ordinal import.

Claims

1. A workpiece clamping jig for a machining center, comprising a machining table (1), characterized in that: The adjusting structure is installed on the top of the processing table (1), and a clamping structure is installed on the top of the adjusting structure. The adjusting structure comprises an adjusting unit and a limiting unit, and the adjusting unit is arranged on the bottom of the outer surface of the limiting unit and the top of the inner surface of the limiting unit. The adjusting unit comprises an asynchronous motor (101), the output end of the asynchronous motor (101) is connected with a worm (102), the outer surface of the worm (102) is connected with a gear ring (103), the top of the gear ring (103) is connected with a gear (106), the middle of one side of the gear (106) is installed with a threaded rod (107), and the outer surface of the threaded rod (107) is connected with a sliding block (108) in the middle.

2. The workpiece clamping fixture for a machining center according to claim 1, characterized in that: The limiting unit comprises a limiting block (104), the outer surface of the limiting block (104) is connected with a clamping table (105), and the outer surface of the clamping table (105) is connected with the outer surface of the limiting block (104) in the form of sliding connection through the opening of the convex annular groove near the bottom.

3. The workpiece clamping fixture for a machining center according to claim 2, wherein: The bottom surface of the asynchronous motor (101) is detachably connected with the top of the processing table (1), the outer surface of the worm (102) is meshingly connected with the outer surface of the gear ring (103) near the bottom, the outer surface of the gear (106) is meshingly connected with the top surface of the gear ring (103), the limiting block (104) is fixedly installed on the inner wall of the gear ring (103), the outer surface of the threaded rod (107) is rotatably connected with the outer surface of the clamping table (105) through the opening of the circular hole near the non-threaded end of the gear (106), the outer surface of the threaded rod (107) is screwedly connected with the middle of the sliding block (108), and the outer surface of the sliding block (108) is slidably connected with the clamping table (105) through the opening of the convex slot.

4. The workpiece clamping fixture for a machining center according to claim 1, wherein: The clamping structure comprises a moving block (201), a connecting block (202) is clamped in the clamping groove in the top of the moving block (201), a clamping block (203) is installed on the side of the connecting block (202) away from the moving block (201), a threaded cylinder (204) is fixedly installed on the middle of the side of the connecting block (202) close to the moving block (201), and a fixing bolt (205) is screwedly connected in the threaded cylinder (204).

5. The workpiece clamping fixture for a machining center according to claim 4, wherein: The bottom end of the moving block (201) is fixedly connected with the top end of the sliding block (108), and the outer surface of the fixing bolt (205) is screwedly connected with the threaded hole in the middle of the moving block (201).

6. The workpiece clamping fixture for a machining center according to claim 1, wherein: The cooling structure comprises a liquid tank (301), a refrigerating device (302) is installed on the middle of the side of each liquid tank (301) away from each other, a liquid injection port (303) is installed on the front middle of each liquid tank (301) close to the top end, a mounting rack (304) is installed on the middle of the side of each liquid tank (301) close to each other, and a fan (305) is installed in the mounting rack (304).

7. The workpiece clamping fixture for a machining center according to claim 6, wherein: The bottom end of each liquid tank (301) is fixedly connected with the middle of the top surface of the processing table (1) close to the left and right ends, and the refrigerating surface of the refrigerating device (302) abuts against the middle of the side of each liquid tank (301) away from each other.

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