Guide device for numerical control linear cutting machine tool

Abstract

A guide device for a numerical control linear cutting machine is matched with a wire wound on a wire conveying cylinder and comprises an upper guide wheel, an upper guider, a lower guider and a lower guide wheel which are sequentially arranged from top to bottom, the upper guider and the lower guider are arranged on an upper cantilever and a lower cantilever respectively, and the structures of the upper guider and the lower guider are identical. Each lining pin comprises a base block and a lining pin detachably arranged in a vertical hole in the middle of the base block, a gap allowing a silk thread to pass through is formed in the base block and penetrates through the outer side wall of the base block and the vertical hole in the middle, a silk thread guide groove corresponding to the gap is formed in the side wall of each lining pin, and the silk thread guide grooves are matched with the upper guide wheels and the lower guide wheels. Guiding and tensioning of the silk threads can be achieved. According to the guide device, the combination of the two guiders and the two guide wheels is adopted to guide the silk thread at the machining position of the workpiece, and the lining pins which are directly used for being in contact with the silk thread in the guiders are designed to be detachable, so that stable guide of the silk thread is guaranteed, and maintenance of the guiders is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of guiding device for numerical control wire cutting machine tool, belong to wire cutting machine tool technical field. BACKGROUND

[0002] The wire guiding device of existing wire cutting machine tool is as shown in Chinese invention patent application "Application Publication Number: CN117182221AU;Application Publication Date: December 08, 2023;Name: wire cutting guiding device, wire cutting machine tool and wire cutting guider", which includes upper guide wheel, upper guider, lower guider and lower guide wheel arranged in order from top to bottom, the guider in the scheme is fixed, and the tension of the wire cannot be adjusted, after long time use, the wire or the guide component is worn, the wire is prone to loosen, and the loosened wire has the defect of low machining precision. SUMMARY

[0003] The utility model aims at the above-mentioned defects of the wire guiding device of existing wire cutting machine tool, provides a kind of guiding device for numerical control wire cutting machine tool, the guiding device can be adjusted according to the tightness of wire, when the bushing in upper guider and lower guider is damaged and cannot be used, it can also be disassembled and replaced, convenient to operate, can effectively guarantee cutting precision, has outstanding practicability.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A kind of guiding device for numerical control wire cutting machine tool is provided, which is matched with the wire wound on the wire conveying drum, including upper guide wheel, upper guider, lower guider and lower guide wheel arranged in order from top to bottom, upper guider and lower guider are respectively arranged on upper cantilever and lower cantilever, the structure of upper guider and lower guider is exactly the same, and both include base block and detachable bushing arranged in the vertical hole in the middle of base block, the gap for accommodating wire is provided on the base block, the gap penetrates the outer side wall and the middle vertical hole of the base block, the side wall of the bushing is provided with wire guide groove corresponding to the gap, and the wire guide groove can realize the guidance and tensioning of the wire by cooperating with the upper guide wheel and the lower guide wheel.

[0006] By adopting the above technical scheme, a guiding device for numerical control wire cutting machine tool is provided. The guiding device realizes the guidance of the wire for workpiece machining position by the combination of two guiders and two guide wheels, and the bushing directly used for contacting with the wire in the guider is designed to be detachable, which not only ensures the stable guidance of the wire, but also facilitates the maintenance of the guider.

[0007] The further setting of the utility model is that the side wall of the lining pin is provided with a clamping groove, the inner wall of the vertical hole in the middle of the base block is provided with a limiting protrusion matched with the clamping groove, the outer side of the base block is provided with a through hole penetrating the outer wall and the vertical hole in the middle, and when the lining pin is inserted into the vertical hole in the middle of the base block from top to bottom, the locking screw is inserted into the through hole, so that the locking of the lining pin can be realized.

[0008] By adopting the above technical scheme, a specific detachable scheme for the lining pin is provided, and the scheme has the advantages of simple structure and convenient operation.

[0009] The further setting of the utility model is that the base block is slidably arranged on the slide rail of the upper / lower cantilever, and the upper / lower cantilever is provided with a positioning structure for positioning the base block.

[0010] The further setting of the utility model is that the positioning structure comprises a support plate fixed on the upper / lower cantilever and a positioning screw rotatably connected to the base block and arranged in the screw hole of the support plate.

[0011] By adopting the above technical scheme, the upper and lower guides are designed to be movable, so that when the guide component or the wire is worn, the position of the upper and lower guides can be moved to realize the tensioning of the wire, so as to ensure that the wire does not cause the problem of poor cutting precision due to the too large jumping range during cutting.

[0012] The further setting of the utility model is that the upper and lower ends of the vertical hole in the middle of the base block are tapered.

[0013] By adopting the above technical scheme, the upper and lower ends of the vertical hole in the middle of the base block are designed to be tapered, so that the interference between the wire and the guide can be effectively avoided, and the service life of the wire can be further ensured, and the cutting precision can be ensured.

[0014] The further setting of the utility model is that the lining pin is made of ceramic, hard alloy, PEEK or metal ceramic composite material.

[0015] By adopting the above technical scheme, the lining pin is made of wear-resistant, high-temperature-resistant and low-friction coefficient material, so that the service life of the lining pin can be effectively improved.

[0016] The further setting of the utility model is that the edges of the wire guide groove of the lining pin are both smooth curved surfaces.

[0017] By adopting the above technical scheme, the edges of the wire guide groove of the lining pin are designed to be smooth curved surfaces, so that the service life of the wire can be effectively prolonged, and the cutting effect can be ensured.

[0018] The main beneficial effects of the utility model are:

[0019] 1、The novel guide device adopts the combination of two guides and two guide wheels to realize the guiding of the wire for the machining position of the workpiece, and the bushing directly used for contacting with the wire in the guide is designed to be detachable, so that the stable guiding of the wire is ensured, and the maintenance of the guide is facilitated;

[0020] 2、The upper and lower guides of the novel guide device are designed to be movable, so that when the guide part or the wire is worn, the tension of the wire can be realized by moving the position of the upper and lower guides, so as to ensure that the problem of poor cutting precision caused by the too large jumping range of the wire during cutting is solved, and the operation is simple, and the cutting precision of the equipment can be effectively ensured;

[0021] 3、The upper and lower ends of the vertical hole in the middle of the base block are designed as tapered openings, the design of the tapered openings can effectively avoid the interference between the wire and the guide, and the service life of the wire can be further ensured, and the cutting precision is ensured;

[0022] 4、The edges of the two ends of the bushing wire guiding groove are designed as smooth curved surfaces, which can effectively prolong the service life of the wire and ensure the cutting effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Fig. 1 is the overall structure schematic view of the present application;

[0025] Fig. 2 is the internal structure schematic view of the upper guide in the present application;

[0026] Fig. 3 is the structure schematic view of the upper guide in the present application;

[0027] Fig. 4 is the structure schematic view of the bushing in the present application.

[0028] In the figure, 1 is a wire conveying cylinder, 2 is a conductive block, 3 is an upper guide wheel, 4 is an upper suspension arm, 41 is a sliding rail, 42 is a support plate, 5 is a workpiece, 6 is a lower suspension arm, 7 is an upper guide, 7' is a lower guide, 71 is a base block, 711 is a gap, 712 is a tapered opening, 72 is a bushing, 721 is a wire guiding groove, 722 is a clamping groove, 74 is a positioning screw, 75 is a locking screw, 8 is a lower guide wheel, and 9 is a wire. DETAILED DESCRIPTION

[0029] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example 1:

[0031] like Figs. 1 to 4 As shown, a guide device for a CNC wire cutting machine tool is configured to work with a wire 9 wound on a wire feed drum 1. It includes an upper guide wheel 3, an upper guide 7, a lower guide 7', and a lower guide wheel 8 arranged sequentially from top to bottom. The upper guide 7 and the lower guide 7' are respectively mounted on an upper cantilever 4 and a lower cantilever 6. The upper guide 7 and the lower guide 7' have identical structures, each including a base block 71 and a liner 72 placed in a vertical hole in the middle of the base block 71. The upper and lower ends of the vertical hole are tapered openings 712. A slit 711 is provided on the base block 71 to accommodate the wire 9. The slit 711 penetrates the outer wall of the base block 71 and the vertical hole in the middle. A wire guide groove 721 corresponding to the slit 711 is provided on the side wall of the liner 72. The wire guide groove 721, through its cooperation with the upper guide wheel 3 and the lower guide wheel 8, can guide and tension the wire 9.

[0032] The side wall of the liner pin 72 is provided with a slot 722, and the inner wall of the vertical hole in the middle of the base block 71 is provided with a limiting protrusion that matches the slot 722. The outer side of the base block 71 is provided with a through hole that penetrates the outer wall and the vertical hole in the middle. When the liner pin 72 is inserted into the vertical hole in the middle of the base block 71 from top to bottom, the locking screw 75 is inserted into the through hole to lock the liner pin 72. The liner pin 72 is made of ceramic, hard alloy, PEEK, or metal ceramic composite material, and the edges of both ends of the wire guide groove 721 of the liner pin 72 are smooth curved surfaces.

[0033] The base block 71 is slidably mounted on the slide rail 41 of the upper cantilever 4 / lower cantilever 6. The upper cantilever 4 / lower cantilever 6 is provided with a positioning structure for positioning the base block 71. The positioning structure includes a support plate 42 fixed on the upper cantilever 4 / lower cantilever 6 and a positioning screw 74 screwed into the screw hole of the support plate 42. The end of the positioning screw 74 is rotatably connected to the base block 71.

[0034] Operating principle:

[0035] By rotating the positioning screw 74, the upper guide 7 and the lower guide 7' are moved, thereby tensioning and guiding the wire 9. By rotating the locking screw 75, the liner pin 72 inserted from top to bottom into the central vertical hole can be locked and unlocked.

Claims

1. A guiding device for a CNC wire cutting machine tool, configured with a wire (9) wound on a wire feed drum (1), comprising an upper guide wheel (3), an upper guide (7), a lower guide (7′), and a lower guide wheel (8) arranged sequentially from top to bottom, wherein the upper guide (7) and the lower guide (7′) are respectively mounted on an upper cantilever (4) and a lower cantilever (6), characterized in that: The upper guide (7) and the lower guide (7') are completely identical in structure, and each comprises a base block (71) and a detachable lining pin (72) arranged in a vertical hole in the middle of the base block (71), the base block (71) is provided with a slit (711) for accommodating the wire (9) to pass through, the slit (711) penetrates the outer sidewall and the vertical hole in the middle of the base block (71), and the sidewall of the lining pin (72) is provided with a wire guide groove (721) corresponding to the slit (711), the wire guide groove (721) can realize the guiding and tensioning of the wire (9) through cooperation with the upper guide pulley (3) and the lower guide pulley (8).

2. A guiding device for a numerically controlled wire cutting machine according to claim 1, characterized in that: The sidewall of the lining pin (72) is provided with a clamping groove (722), the inner wall of the vertical hole in the middle of the base block (71) is provided with a limiting protrusion matched with the clamping groove (722), the outer side of the base block (71) is provided with a through hole penetrating the outer wall and the vertical hole in the middle, when the lining pin (72) is inserted into the vertical hole in the middle of the base block (71) from top to bottom, a locking screw (75) is inserted into the through hole, and the locking of the lining pin (72) can be realized.

3. A guiding device for a numerically controlled wire cutting machine according to claim 2, characterized in that: The base block (71) is slidingly arranged on the slide rail (41) of the upper cantilever (4) / lower cantilever (6), and the upper cantilever (4) / lower cantilever (6) is provided with a positioning structure for positioning the base block (71).

4. A guiding device for a numerically controlled wire cutting machine according to claim 3, characterized in that: The positioning structure comprises a support plate (42) fixed on the upper cantilever (4) / lower cantilever (6) and a positioning screw (74) screwing on the screw hole of the support plate (42), and the end of the positioning screw (74) is rotatably connected with the base block (71).

5. The guiding device for CNC wire cutting machine according to claim 1, characterized in that: The upper and lower ends of the vertical hole in the middle of the base block (71) are tapered ports (712).

6. A guiding device for a numerically controlled wire cutting machine according to claim 1, characterized in that: The lining pin (72) is made of ceramic, hard alloy, PEEK or cermet composite material.

7. A guiding device for a numerically controlled wire cutting machine according to claim 6, characterized in that: The edges of the two ends of the wire guide groove (721) of the lining pin (72) are smooth curved surfaces.

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