Numerical control machine tool for mold machining

Abstract

The utility model discloses a numerical control machine tool for mould machining, which relates to the field of mould machines, and comprises a device main body, the front part of the device main body is connected with a cabinet door, the device main body is internally provided with a working table, the device main body is internally provided with a grinding device far away from the working table, and the upper surface of the working table is connected with a fixed block. And a self-locking mechanism for improving the clamping stability is arranged in the movable groove, the self-locking mechanism comprises a rotating block, the rotating block rotates in the movable groove, a torsional spring is connected between the rotating block and the movable groove, and a rotating block is fixed to the bottom of the rotating block. According to the numerical control machine tool for mold machining, when the external connection block moves, the fixing blocks at the top can be driven to move oppositely, the two fixing blocks can conduct extrusion when moving to the side face of a machined workpiece, the workpiece fixing efficiency of the numerical control machine tool is improved, and then the rotating block can drive a gear to conduct positioning, so that the fixing blocks are driven to conduct positioning; and the clamping stability of the machined part can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould machine technical field, concretely for a kind of numerical control machine tool for mould machine processing. BACKGROUND

[0002] Mould machine is used to shape the tool of article, it realizes the processing of article shape by changing the physical state of the shaped material, the production of mould machine needs to use numerical control machine tool, numerical control machine tool is a kind of automatic equipment that is controlled by pre-programmed instruction to carry out machining operation, with high precision, high efficiency and degree of automation, use very widely.

[0003] At present, numerical control machine tool still has certain deficiencies, such as unstable clamping, falling and deviation phenomenon occurs:

[0004] In order to overcome the problem of unstable clamping, the prior art (publication number: CN221455084U) discloses a part machining positioning device of numerical control machine tool, which realizes clamping positioning of different specifications of workpieces by the clamping assembly arranged in the numerical control machine tool body, the clamping assembly includes a moving groove, etc., the moving groove is opened on the upper surface of the workbench, and a screw rod and a fixed plate are arranged in the moving groove, a clamping shaft and a clamping plate are arranged on the fixed plate, the clamping assembly is provided with two groups, the workpiece is placed on the workbench and then clamped and positioned, the fixed plate is adjusted in position by driving the screw rod to rotate by using the moving motor, and then the workpiece is clamped and fixed by the two groups of clamping plates, after the workpiece is clamped and positioned, drilling work is carried out, the adjustable fixed plate can adapt to workpieces of different specifications, and falling or deviation is prevented when clamping;

[0005] However, the numerical control machine tool used at present still has certain deficiencies, the workpiece is clamped and fixed by the screw rod in the above-mentioned document, the wear of the screw rod is relatively large, and the extrusion efficiency of the screw rod is usually relatively low, which will affect the efficiency of workpiece machining, and secondly, the clamping plate of the device is inconvenient to replace, which will also affect the production and machining efficiency, so the existing structure needs to be improved. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of numerical control machine tool for mould machine processing to solve the problem that numerical control machine tool is low in workpiece clamping efficiency, time-consuming and fixed block of machine tool is inconvenient to replace in the above background art.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of numerical control machine tool for mould machine processing, including device main body, the device main body front is connected with cabinet door, the device main body interior is installed with workbench, the device main body is installed with grinding device away from workbench interior, the workbench upper surface is connected with fixed block:

[0008] The workbench top is provided with a movable groove, a first toothed plate slides in the movable groove, a second toothed plate symmetrically slides in the movable groove close to the first toothed plate, an external connecting block is fixed on the top of the first toothed plate and the second toothed plate, the external connecting block penetrates and slides in the movable groove, a fixed block is connected to the top of the external connecting block, and a clamping mechanism for improving the clamping efficiency of the machine tool is arranged in the workbench.

[0009] A through groove is formed in the top of the external connecting block, and a rotating mechanism for replacing the fixed block is arranged in the external connecting block.

[0010] Further, the clamping mechanism comprises a gear, the gear is connected between the first toothed plate and the second toothed plate, the gear rotates at the output end of the motor, and the motor is installed in the movable groove.

[0011] Further, a self-locking mechanism for improving the clamping stability is arranged in the movable groove, the self-locking mechanism comprises a rotating block, the rotating block rotates in the movable groove, a torsional spring is connected between the rotating block and the movable groove, and a rotating block is fixed to the bottom of the rotating block.

[0012] Further, a ratchet wheel is fixed to the top of the gear, the ratchet wheel is connected to the side of the rotating block, a pressing rod is connected in the inner surface of the upper surface of the workbench, and an extrusion block is fixed to the bottom of the pressing rod.

[0013] Further, the extrusion block slides in the movable groove, and the inclined surface of the extrusion block is attached to the side of the rotating block close to the ratchet wheel, a limiting block is fixed to the side of the extrusion block, and the limiting block slides in the workbench.

[0014] Further, the rotating mechanism comprises a rotating rod, the rotating rod penetrates and rotates in the through groove, a torsional spring is connected between the rotating rod and the through groove, a positioning block is fixed to the top end of the rotating rod, the positioning block rotates in a positioning groove, the positioning groove is formed in the bottom of the fixed block, a guide groove is formed in the side of the fixed block close to the positioning groove, and the guide groove is in sliding connection with the external connecting block.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The numerical control machine tool for mold machining, when the external connecting block moves, the fixed blocks on the top can move towards each other, the two fixed blocks can be extruded when moving to the side surface of the workpiece, the efficiency of fixing the workpiece of the numerical control machine tool is improved, and then the rotating block can drive the gear to be positioned, thereby driving the fixed blocks to be positioned, and the stability of clamping the workpiece can be improved.

[0017] 2. The second toothed plate and the first toothed plate are symmetrically connected on both sides of the gear, can move synchronously when the gear rotates, thereby driving the fixed block to stably extrude the workpiece, the meshing operation mode is high in efficiency, and the clamping efficiency can be improved;

[0018] 3. The ratchet wheel and the rotating block are arranged, the ratchet wheel and the rotating block can automatically lock the gear, so that the fixed block can be kept stable when clamping the workpiece and prevent loosening;

[0019] 4. The extrusion block is arranged, the rotating block is extruded by the extrusion block, so that the rotating block no longer locks the ratchet wheel, and the workpiece clamping or loosening is facilitated;

[0020] 5. The positioning block is arranged, the fixed block can be disassembled through separation of the positioning block and the positioning groove, and the efficiency of replacing the fixed block is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole front perspective structure schematic view of the utility model;

[0022] Figure 2 It is an enlarged perspective structure schematic view of the grinding device of the utility model;

[0023] Figure 3 It is a workbench sectional perspective structure schematic view of the utility model;

[0024] Figure 4 It is an enlarged perspective structure schematic view of the ratchet wheel of the utility model;

[0025] Figure 5 It is an enlarged perspective structure schematic view of the fixed block of the utility model;

[0026] Figure 6 It is an enlarged perspective structure schematic view of the rotating rod of the utility model.

[0027] In the drawing: 1, device main body; 2, cabinet door; 3, workbench; 4, grinding device; 5, fixed block; 301, movable slot; 302, first toothed plate; 303, second toothed plate; 304, external connecting block; 305, gear; 306, rotating block; 307, rotating block; 308, ratchet wheel; 309, pressing rod; 310, extrusion block; 311, limiting block; 312, through slot; 313, rotating rod; 314, positioning block; 315, guide slot; 316, positioning slot. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: Figures 1-4 The technical solution shown in the figure, the utility model provides the following technical solution: In order to solve the problem that the CNC machine tool has low efficiency and is time-consuming in clamping the workpiece, a clamping mechanism is disclosed:

[0030] The present invention comprises a main body 1, a cabinet door 2 is connected to the front of the main body 1, a workbench 3 is installed inside the main body 1, a grinding device 4 is installed inside the main body 1 away from the workbench 3, a fixed block 5 is connected to the upper surface of the workbench 3, a movable groove 301 is provided on the top of the workbench 3, a first tooth plate 302 is slidably provided inside the movable groove 301, a second tooth plate 303 is symmetrically slid inside the movable groove 301 near the first tooth plate 302, an external block 304 is fixed to the top of the second tooth plate 303 and the first tooth plate 302, the external block 304 penetrates and slides inside the movable groove 301, the top of the external block 304 is connected to the fixed block 5, a clamping mechanism for improving the clamping efficiency of the machine tool is provided inside the workbench 3, a through groove 312 is penetrated through the top of the external block 304, a rotating mechanism for replacing the fixed block 5 is provided inside the external block 304, and the clamping mechanism includes a gear 305, which is meshed and connected between the first tooth plate 302 and the second tooth plate 303. When the workpiece is placed on the specified position on the surface of the workbench 3, the motor is started. When the motor is started, the output end can drive the gear 305 to rotate. When the gear 305 rotates, it can drive the second gear plate 303 to mesh with the first gear plate 302 and move. When the second gear plate 303 meshes with the first gear plate 302 and moves, it can slide through the movable groove 301. When the second gear plate 303 and the first gear plate 302 slide, they can respectively drive the external block 304 to move. When the external block 304 moves, it can drive the fixed block 5 on the top to move toward each other. When the two fixed blocks 5 move to the side of the workpiece, they can squeeze, thereby improving the efficiency of the CNC machine tool in fixing the workpiece.

[0031] Example 2: Figures 2-4 The technical solution shown in the figure, the utility model provides the following technical solution: In order to solve the problem that the clamping mechanism of the CNC machine tool may be unstable, based on the first embodiment, a self-locking mechanism is disclosed:

[0032] The self-locking mechanism for improving clamping stability is arranged in the movable groove 301, the self-locking mechanism comprises a rotating block 306, the rotating block 306 rotates in the movable groove 301, a torsion spring is connected between the rotating block 306 and the movable groove 301, a rotating block 307 is fixed to the bottom of the rotating block 306, a ratchet wheel 308 is fixed to the top of the gear 305, the ratchet wheel 308 is connected to the side of the rotating block 307, a pressing rod 309 is connected to the inner upper surface of the workbench 3, an extrusion block 310 is fixed to the bottom of the pressing rod 309, the extrusion block 310 slides in the movable groove 301, and the inclined surface of the extrusion block 310 is attached to the side of the rotating block 307 close to the ratchet wheel 308, a limiting block 311 is fixed to the side of the extrusion block 310, the limiting block 311 slides in the workbench 3, when the numerical control machine tool fixes the workpiece, the gear 305 can rotate, the gear 305 can drive the ratchet wheel 308 to rotate when the gear 305 rotates, the inclined surface can extrude the rotating block 307 when the ratchet wheel 308 rotates, the rotating block 307 can drive the rotating block 306 to rotate when the rotating block 307 is extruded, the rotating block 306 can tighten the torsion spring through the movable groove 301 when the rotating block 306 rotates, the ratchet wheel 308 can continue to rotate after the rotating block 307 is twisted to a specified angle, the ratchet wheel 308 can stop rotating when the fixing block 5 clamps and fixes the workpiece, the rotating block 306 can be reset through the torsion spring at this time, the rotating block 306 can drive the rotating block 307 to reset when the rotating block 306 is reset, the rotating block 307 can be positioned to the plane of the ratchet wheel 308 when the rotating block 307 is reset, the ratchet wheel 308 can drive the gear 305 to be positioned, so as to drive the fixing block 5 to be positioned, and the stability of clamping the workpiece can be improved, and when the workpiece needs to be loosened, the pressing rod 309 can drive the extrusion block 310 to move, the extrusion block 310 can drive the limiting block 311 to move when the extrusion block 310 moves, the extrusion block 310 and the limiting block 311 can slide through the movable groove 301, the inclined surface can extrude the rotating block 307 when the extrusion block 310 slides down, the rotating block 307 subjected to extrusion can rotate out of the plane of the ratchet wheel 308, so that the gear 305 can rotate at will, and the convenience is improved.

[0033] Embodiment three, as shown in the technical scheme of Figure 2 , Figure 3 , Figure 5 and Figure 6 , the utility model provides the following technical scheme: in order to solve the problem that the fixing block 5 of numerical control machine tool is inconvenient to replace, influence processing efficiency, discloses a rotating mechanism:

[0034] The rotating mechanism comprises a rotating rod 313, the rotating rod 313 is rotatable through the through groove 312, a torsion spring is connected between the rotating rod 313 and the through groove 312, a positioning block 314 is fixed at the top end of the rotating rod 313, the positioning block 314 is rotatable in a positioning groove 316, the positioning groove 316 is arranged at the bottom of the fixed block 5, a guide groove 315 is arranged at the side of the fixed block 5 close to the positioning groove 316, the guide groove 315 is in sliding connection with the external block 304, when the fixed block 5 of the numerical control machine needs to be replaced after long time use, the rotating rod 313 can be rotated through the through groove 312, the rotating rod 313 can drive the positioning block 314 to rotate when rotating, the positioning block 314 can rotate through the positioning groove 316, the fixed block 5 can be pushed upward when the positioning block 314 rotates to the same position as the cross section of the outlet of the positioning groove 316, the fixed block 5 can drive the positioning groove 316 to move upward when being pushed, the positioning groove 316 can slide through the positioning block 314 and the external block 304 respectively when moving upward, the fixed block 5 can be separated from the external block 304 after sliding to the specified height, the fixed block 5 can be disassembled and replaced after being separated, the efficiency of replacing the fixed block 5 is improved, and the processing efficiency of the numerical control machine is improved.

[0035] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A CNC machine tool for mold machining, comprising a device body (1), a cabinet door (2) connected to the front of the device body (1), a workbench (3) installed inside the device body (1), a grinding device (4) installed inside the device body (1) away from the workbench (3), and a fixing block (5) connected to the upper surface of the workbench (3), characterized in that: A movable groove (301) is provided on the top of the workbench (3), a first tooth plate (302) slides inside the movable groove (301), a second tooth plate (303) slides symmetrically inside the movable groove (301) close to the first tooth plate (302), an external block (304) is fixed on the top of the second tooth plate (303) and the first tooth plate (302), the external block (304) slides through the movable groove (301), the top of the external block (304) is connected to a fixed block (5), and a clamping mechanism for improving the clamping efficiency of the machine tool is provided inside the workbench (3); A through slot (312) is provided through the top of the external block (304), and a rotating mechanism for replacing the fixed block (5) is provided inside the external block (304).

2. A CNC machine tool for mold machining according to claim 1, characterized in that: The clamping mechanism comprises a gear (305) meshingly connected between a first tooth plate (302) and a second tooth plate (303), the gear (305) rotating at an output end of a motor, and the motor being installed inside the movable slot (301).

3. The CNC machine tool for mold machining according to claim 1, characterized in that: A self-locking mechanism for improving clamping stability is provided inside the movable groove (301), and the self-locking mechanism comprises a rotating block (306). The rotating block (306) rotates inside the movable groove (301), a torsion spring is connected between the rotating block (306) and the movable groove (301), and a rotating block (307) is fixed to the bottom of the rotating block (306).

4. The CNC machine tool for mold machining according to claim 2, characterized in that: A ratchet (308) is fixed on the top of the gear (305), and the ratchet (308) is connected to the side of the rotating block (307). A pressure rod (309) is connected inside the upper surface of the workbench (3), and an extrusion block (310) is fixed on the bottom of the pressure rod (309).

5. The CNC machine tool for mold machining according to claim 4, characterized in that: The extrusion block (310) slides inside the movable groove (301), and the inclined surface of the extrusion block (310) fits on the side of the rotating block (307) close to the ratchet (308). A limit block (311) is fixed on the side of the extrusion block (310), and the limit block (311) slides inside the workbench (3).

6. The CNC machine tool for mold machining according to claim 1, characterized in that: The rotating mechanism includes a rotating rod (313), the rotating rod (313) rotates through the through slot (312), a torsion spring is connected between the rotating rod (313) and the through slot (312), a positioning block (314) is fixed to the top of the rotating rod (313), the positioning block (314) rotates inside the positioning slot (316), the positioning slot (316) is provided at the bottom of the fixed block (5), a guide slot (315) is provided on the side of the fixed block (5) close to the positioning slot (316), and the guide slot (315) is slidably connected to the external block (304).

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