Punching device

Abstract

The utility model relates to the technical field of trepanning devices, in particular to a trepanning device which comprises a central rotating shaft and a trepanning device body, the central rotating shaft is used for being connected with an electric tool, the trepanning device body is used for trepanning a plate, the central rotating shaft penetrates through the trepanning device body, and the lower side of the trepanning device body is fixedly connected with a plurality of cutting stationary knives and a trepanning assembly. The tapping assembly is used for prolonging the service life of the tapper body and comprises a plurality of cutting sliding knives, the cutting sliding knives are connected to the tapper body in a sliding mode, the cutting fixed knives and the cutting sliding knives are sequentially and annularly arranged with the axis of the tapper body as the center, and one side of each cutting sliding knife is connected with a reset assembly. And the support is used for supporting and resetting each cutting sliding knife. By means of the technical scheme, the plate perforating effect is guaranteed, meanwhile, abrasion of all parts is reduced, the service life of the parts of the device is prolonged, and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hole opening device technical field, specifically, relates to a hole opening device. BACKGROUND

[0002] The hole opening device is also called a hole saw or a hole saw, refers to a special circular saw of sawing type in modern industry or engineering for processing a circular hole, is simple and flexible to operate, convenient to carry, safe and widely used, and is installed on electric tools such as a hand drill, an impact drill and a radial drill for use.

[0003] The hole opener usually comprises a hole opener body, a supporting handle, a drill bit and a spring, positioning is carried out through the drill bit rotating quickly, then a hole groove is switched out through the hole opener body, in long-time processing, the cutter under the hole opener body is greatly abraded, the service life of the hole opener body is reduced, workers need to replace the hole opener body in time, and the use cost of the device is improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a hole opening device, guarantees the effect that the plate material is opened, reduces the abrasion of each part simultaneously, improves the service life of the device part, and reduces the use cost.

[0005] The technical scheme of the utility model is as follows:

[0006] A hole opening device comprises:

[0007] A central rotating shaft is used for being connected with an electric tool;

[0008] A hole opener body is used for opening a hole in a plate material, the central rotating shaft passes through the hole opener body, and a plurality of cutting fixed knives are fixedly connected to the lower side of the hole opener body;

[0009] A hole opening assembly is used for improving the service life of the hole opener body, the hole opening assembly comprises a plurality of cutting sliding knives, each cutting sliding knife is slidably connected to the hole opener body, and each cutting fixed knife and each cutting sliding knife are arranged in a ring shape in sequence with the central rotating shaft of the hole opener body as the center;

[0010] Each cutting sliding knife is connected to a reset assembly on one side, and the reset assembly is used for supporting and resetting each cutting sliding knife.

[0011] Further, the reset assembly comprises a transmission plate, the transmission plate is detachably fixedly connected to the inner side of the cutting sliding knife, a reset plate is hingedly connected to the end, away from the cutting sliding knife, of the transmission plate, a reset column is slidably connected to the reset plate, one end of the reset column, towards the central rotating shaft of the hole opener body, is fixedly connected to a limiting plate, a damping spring is sleeved on the reset column, and the two ends of the damping spring are respectively abutted with the reset plate and the limiting plate.

[0012] Further, the side of the trepanning machine body away from the reset assembly is connected with an adjusting assembly for adjusting the reset assembly.

[0013] The adjusting assembly comprises an adjusting toothed disc, and a plurality of linkage plates are hinged to the side of the adjusting toothed disc facing the axis of the trepanning machine body.

[0014] A plurality of limiting grooves are formed on the trepanning machine body, and each linkage plate is hinged to a limiting plate through adjacent limiting grooves.

[0015] An adjusting gear is rotatably connected to the trepanning machine body, the adjusting gear is engaged with the adjusting toothed disc, a limiting screw is connected to the adjusting gear, and the limiting screw is threadedly connected to the trepanning machine body.

[0016] Further, a protective plate is fixedly connected to the side of the trepanning machine body facing the adjusting toothed disc, and the protective plate is used for protecting the adjusting toothed disc and the adjusting gear.

[0017] A clearance groove is formed on the protective plate, a clamping groove is formed on the protective plate, a sliding column is slidably abutted on the clamping groove, and the sliding column is rotatably connected to the side of the adjusting toothed disc away from the adjusting gear.

[0018] Further, the central rotating shaft comprises a clamping cylinder, the upper end of the clamping cylinder is connected to the electric tool, the clamping cylinder is rotatably connected to the trepanning machine body, a twist drill bit is slidably connected in the clamping cylinder, a clamping pin is fixedly connected to the twist drill bit, a reset spring is sleeved on the twist drill bit, and the two ends of the reset spring are respectively abutted on the clamping cylinder and the clamping pin.

[0019] Further, a dustproof sleeve is fixedly connected in the trepanning machine body.

[0020] Further, a plurality of chip grooves are formed on the outer side of the trepanning machine body.

[0021] The beneficial effects of the present application are as follows.

[0022] Under the positioning effect of the central rotating shaft on the plate, the reset assembly can make each cutting fixed cutter and each cutting sliding cutter sequentially process the plate, ensure the plate trepanning effect, reduce the wear of each component, and improve the service life of the device components. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0024] Figure 1 The present application is an enlarged schematic view;

[0025] Figure 2 The present application is an enlarged schematic view;

[0026] Figure 3 It is a local section enlarged schematic view of the utility model;

[0027] Figure 4 It is Figure 3 An enlarged schematic view of A.

[0028] In the figure: 11, central rotating shaft; 12, hole opener body; 121, limiting groove; 122, cutting chip groove; 13, cutting fixed knife; 14, cutting sliding knife; 21, transmission plate; 22, reset plate; 23, reset column; 24, limiting plate; 25, shock absorbing spring; 31, adjusting tooth disc; 32, linkage plate; 33, adjusting gear; 34, limiting screw; 41, protective plate; 411, empty slot; 42, clamping groove; 43, sliding column; 51, clamping cylinder; 52, twist drill; 53, clamping pin; 54, reset spring; 61, dust cover. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0030] Embodiment 1

[0031] As Figures 1-4 shown, the embodiment presents a hole opening device, including central rotating shaft 11, hole opener body 12 and hole opening assembly, central rotating shaft 11 is used for connecting with electric tool, hole opener body 12 is used for opening hole to plate material, central rotating shaft 11 passes through hole opener body 12, and a plurality of cutting fixed knives 13 are fixedly connected to the lower side of hole opener body 12, hole opening assembly is used for improving the service life of hole opener body 12, and the hole opening assembly includes a plurality of cutting sliding knives 14, each cutting sliding knife 14 is slidably connected on hole opener body 12, and each cutting fixed knife 13 and each cutting sliding knife 14 are sequentially arranged in annular shape with the axis of hole opener body 12 as the center;

[0032] One side of each cutting sliding knife 14 is connected with a reset assembly, for supporting and resetting each cutting sliding knife 14;

[0033] The tooth depth of each cutting fixed knife 13 and each cutting sliding knife 14 is greater than 5mm, the spacing between adjacent cutting fixed knife 13 and cutting sliding knife 14 is 6-7mm, and the cutting angle of each cutting fixed knife 13 and each cutting sliding knife 14 is 3 °;

[0034] Under the positioning effect of the center rotating shaft 11 on the plate, the reset assembly can make each cutting fixed knife 13 and each cutting sliding knife 14 process the plate in turn, ensure the plate hole opening effect, and reduce the wear of each component and improve the service life of the device component;

[0035] Preferably, different proportions of cutting fixed knives 13 and cutting sliding knives 14 can be selected for use according to actual operation conditions to ensure the processing effect and reduce the manufacturing and maintenance costs of the device.

[0036] As shown in Figures 3-4 The reset assembly includes a transmission plate 21, which is detachably fixedly connected with the inner side of the cutting sliding knife 14. The detachable fixed connection can be used as bolt and nut connection or other pin connection. Such connection relationship is a conventional technology, and therefore will not be described in detail.

[0037] One end of the transmission plate 21 away from the cutting sliding knife 14 is hingedly connected with a reset plate 22, the reset plate 22 is slidingly connected with a reset column 23, the reset column 23 is fixedly connected with a limiting plate 24 towards the axis of the hole opener body 12, a damping spring 25 is sleeved on the reset column 23, and the two ends of the damping spring 25 are respectively abutted with the reset plate 22 and the limiting plate 24.

[0038] When the cutting operation starts, after the center rotating shaft 11 positions the center of the plate, under the action of the damping spring 25, each cutting sliding knife 14 is ejected out of the hole opener body 12. At this time, the hole opening operation of the plate is mainly performed by each cutting sliding knife 14, and the vibration generated in the cutting process can also be damped by the damping spring 25 to reduce the wear of the surface of each cutting sliding knife 14 on the plate. Then, as the hole opener body 12 continuously feeds towards the plate, each cutting sliding knife 14 continuously retracts towards the hole opener body 12 until the cutting fixed knife 13 below the hole opener body 12 further processes along the slot cut by each cutting sliding knife 14. At this time, each cutting fixed knife 13 acts as the main cutting force, and the cutting sliding knife 14 bears part of the cutting wear of the cutting fixed knife 13, and enables the cutting fixed knife 13 to process along the slot that has been cut, thereby reducing the wear of the cutting fixed knife 13 caused by cutting. At the same time, the operation of the cutting fixed knife 13 also reduces the feeding force of the cutting sliding knife 14 on the plate, thereby synchronously reducing the wear of the cutting sliding knife 14. Each cutting fixed knife 13 and each cutting sliding knife 14 processes the plate in turn to ensure the plate hole opening effect, reduce the wear of each component, and improve the service life of the equipment.

[0039] As shown in Figures 2-4As shown, the center rotating shaft 11 comprises a clamping cylinder 51, the upper end of the clamping cylinder 51 is connected with the electric tool, the clamping cylinder 51 is rotationally connected on the hole opener body 12, a twist drill 52 is slidingly connected in the clamping cylinder 51, a clamping pin 53 is fixedly connected on the twist drill 52, and a reset spring 54 is sleeved on the twist drill 52, both ends of the reset spring 54 are respectively in abutment with the clamping cylinder 51 and the clamping pin 53;

[0040] The twist drill 52 can slide along the inner wall of the clamping cylinder 51 and rotate synchronously with the clamping cylinder 51, so that when the hole opener body 12 feeds downward, the twist drill 52 can be positioned at the center of the plate and slide to the clamping cylinder 51, reducing the machining feeding effect of the twist drill 52 on the plate, thereby reducing the wear of the twist drill 52 and prolonging the service life of the twist drill 52. Then, under the action of the reset spring 54, the twist drill 52 can be reset when the hole opening device stops working and lifts up, facilitating the user to position the next hole opening position of the plate.

[0041] As shown in Figure 3 and Figure 4 The dust cover 61 is fixedly connected in the hole opener body 12;

[0042] The dust cover 61 separates the cutting waste generated by the hole opening of the hole opener body 12 from the reset assembly, thereby protecting the components in the reset assembly.

[0043] As shown in Figure 1 and Figure 2 A plurality of cutting grooves 122 are formed on the outer side surface of the hole opener body 12;

[0044] When the hole opener body 12 rotates at high speed to perform hole opening on the plate, the waste on the plate can be discharged through the cutting grooves 122, improving the hole opening effect, and reducing the contact area between the outer side surface of the hole opener body 12 and the inner wall of the hole on the plate when the hole opener body 12 feeds downward, thereby reducing the wear of the outer side surface of the hole opener body 12 and prolonging the service life of the hole opener body 12

[0045] Embodiment 2

[0046] This embodiment further improves the operation effect of the reset assembly based on embodiment 1;

[0047] As shown in Figures 1-4As shown, the hole body 12 is connected with the adjusting assembly on the side away from the reset assembly for adjusting the reset assembly, the adjusting assembly comprises an adjusting gear disc 31, the adjusting gear disc 31 is hinged to a plurality of linkage plates 32 on the side towards the axis of the hole body 12, a plurality of limiting grooves 121 are formed on the hole body 12, each linkage plate 32 is hinged to the limiting plate 24 through the adjacent limiting groove 121, an adjusting gear 33 is rotationally connected to the hole body 12, the adjusting gear 33 is engaged with the adjusting gear disc 31, and a limiting screw 34 is connected to the adjusting gear 33 and is threadedly connected with the hole body 12;

[0048] The user can loosen the limiting screw 34, manually or by other tools to drive the adjusting gear 33, adjust the angle of the adjusting gear disc 31, and then tighten the limiting screw 34 to lock the rotation angle of the adjusting gear disc 31;

[0049] The plate is first machined by the cutting sliding knives 14, the cutting fixed knives 13 are reduced in wear time by the cutting sliding knives 14, and the cutting fixed knives 13 can be further machined along the notches cut by the cutting sliding knives 14, that is, the wear of the surface of the cutting fixed knives 13 is reduced, the service life of the cutting fixed knives 13 is improved, and the service life of the hole body 12 is improved, then the hole body 12 gradually feeds towards the plate, the cutting fixed knives 13 and the cutting sliding knives 14 are machined synchronously, the work of the cutting fixed knives 13 reduces the working pressure of the cutting sliding knives 14, the cutting sliding knives 14 gradually retract into the hole body 12 under the action force, at this time, the wear of the cutting sliding knives 14 by the plate is reduced, the cutting fixed knives 13 and the cutting sliding knives 14 are machined in sequence, the plate hole machining effect is ensured, and the wear of each component is reduced, and the service life of the equipment is improved.

[0050] Embodiment 3

[0051] The adjusting mode of the reset assembly is further improved based on the embodiment 2;

[0052] As shown in the figure, Figures 1-4 The hole body 12 is fixedly connected with a protection plate 41 on the side towards the adjusting gear disc 31, the protection plate 41 is used for protecting the adjusting gear disc 31 and the adjusting gear 33, a clearance groove 411 is formed on the protection plate 41, a clamping groove 42 is formed on the protection plate 41, the clamping groove 42 is in sliding abutment with a sliding column 43, and the sliding column 43 is rotationally connected to the side of the adjusting gear disc 31 away from the adjusting gear 33;

[0053] The empty slot 411 completely leaks out the adjusting gear 33, facilitates the user to adjust the adjusting gear 33, the user can loosen the limiting screw 34 on the adjusting gear 33, then manually controls the rotation angle of the adjusting gear 31 through the sliding column 43, that is, controls the distance of each cutting sliding knife 14 sliding out of the body 12, then tightens the limiting screw 34, and the rotation angle of the adjusting gear 31 is clamped;

[0054] Through the first step of each cutting sliding knife 14 machining the plate, through each cutting sliding knife 14 reducing the wear time of the cutting fixed knife 13 and the plate machining, and enabling the cutting fixed knife 13 to further process along the slot cut out by each cutting sliding knife 14, that is, reducing the wear of the surface of the cutting fixed knife 13, improving the service life of the cutting fixed knife 13, that is, improving the service life of the body 12, then gradually feeding the body 12 to the plate direction, enabling each cutting fixed knife 13 and each cutting sliding knife 14 to synchronously machine the plate, the work of each cutting fixed knife 13 reduces the working pressure of each cutting sliding knife 14, each cutting sliding knife 14 gradually retracts into the body 12 under the action force, at this time, reducing the wear of the plate to the cutting sliding knife 14, each cutting fixed knife 13 and each cutting sliding knife 14 sequentially machine the plate, guaranteeing the plate hole effect, and simultaneously reducing the wear of each part, improving the service life of the equipment.

[0055] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An aperturing device characterized by, The utility model relates to a center pivot (11) for connecting with electric tools, a hole opener body (12) for opening holes in plates, a plurality of cutting fixed knives (13) fixedly connected to the lower side of the hole opener body (12), a hole opening assembly for improving the service life of the hole opener body (12), the hole opening assembly comprising a plurality of cutting sliding knives (14), each cutting sliding knife (14) being slidably connected to the hole opener body (12), and each cutting fixed knife (13) and each cutting sliding knife (14) being arranged in a ring shape in sequence with the axis of the hole opener body (12) as the center, and a reset assembly connected to one side of each cutting sliding knife (14) for supporting and resetting each cutting sliding knife (14). The reset assembly comprises a transmission plate (21) detachably fixed to the inner side of the cutting sliding knife (14), a reset plate (22) hinged to the end of the transmission plate (21) away from the cutting sliding knife (14), a reset column (23) slidably connected to the reset plate (22), a limiting plate (24) fixed to one end of the reset column (23) towards the axis of the hole opener body (12), a shock-absorbing spring (25) sleeved on the reset column (23), and the two ends of the shock-absorbing spring (25) abutting against the reset plate (22) and the limiting plate (24) respectively. The hole opener body (12) is connected to an adjusting assembly on the side away from the reset assembly for adjusting the reset assembly. The adjusting assembly comprises an adjusting toothed disc (31) hinged to a plurality of linkage plates (32) on one side of the adjusting toothed disc (31) towards the axis of the hole opener body (12). A plurality of limiting grooves (121) are formed in the hole opener body (12), each linkage plate (32) being hinged to the limiting plate (24) through adjacent limiting grooves (121); 2. The aperturing device of claim 1, wherein, An adjusting gear (33) is rotatably connected to the hole opener body (12), the adjusting gear (33) being engaged with the adjusting toothed disc (31), a limiting screw (34) being connected to the adjusting gear (33), and the limiting screw (34) being threadedly connected to the hole opener body (12).

3. The aperturing device of claim 2, wherein, A protective plate (41) is fixedly connected to one side of the hole opener body (12) towards the adjusting toothed disc (31), the protective plate (41) being used for protecting the adjusting toothed disc (31) and the adjusting gear (33); An empty slot (411) is formed in the protective plate (41), a clamping slot (42) is formed in the protective plate (41), a sliding column (43) slidably abutting against the clamping slot (42) is formed in the protective plate (41), and the sliding column (43) is rotatably connected to one side of the adjusting toothed disc (31) away from the adjusting gear (33). ​ ​ 4. The trepanning apparatus of claim 3 wherein, ​ ​ 5. The apparatus of claim 1, wherein, The center rotating shaft (11) comprises a clamping cylinder (51), the upper end of the clamping cylinder (51) is connected with the electric tool, the clamping cylinder (51) is rotationally connected on the trepanning tool body (12), a twist drill (52) is slidably connected in the clamping cylinder (51), a clamping pin (53) is fixedly connected on the twist drill (52), a reset spring (54) is sleeved on the twist drill (52), and the two ends of the reset spring (54) are respectively in surface abutment with the clamping cylinder (51) and the clamping pin (53).

6. The trephination device of claim 1, wherein, The trepanning tool body (12) is fixedly connected with a dust cover (61) inside.

7. The trephination device of claim 1 wherein, A plurality of chip grooves (122) are formed on the outer side surface of the trepanning tool body (12).

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