Drilling device for improving furnace end

Abstract

The utility model relates to the technical field of furnace end machining, in particular to a drilling device for improving a furnace end, which comprises a disc, a rotating shaft is fixedly arranged in the middle of the upper end face of the disc, the disc is of a hollow structure, a plurality of drill bits are slidably arranged in the disc, and a plurality of driving parts are arranged on the disc. Each driving part corresponds to one drill bit and drives the drill bit to reciprocate in the radial direction of the disc, a containing pipe extending downwards is arranged in the middle of the disc, and a clamping structure detachably connected with the drill bit is arranged on the inner wall of the containing pipe. According to the drilling device used for improving the furnace end, the needed drill bits can be found and replaced at any time when the drill bits need to be switched through pre-storage of the multiple drill bits, radial sliding switching is more convenient and faster than threaded disassembly in the prior art, meanwhile, threaded connection is replaced by a clamping structure, and the labor-saving effect is more remarkable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of furnace head processing, and specifically relates to a drilling device for improving furnace head. BACKGROUND

[0002] In the processing of furnace head, the drilling processes of fire hole and mounting hole have different processing requirements: drilling and chamfering operations are required for fire hole in sequence, and drilling, reaming and chamfering operations are required for mounting hole in sequence. In the prior art, the drilling device for furnace head processing usually adopts the structural design of fixed drill bit or single-function drill bit. When different processing procedures need to be switched (such as from drilling to chamfering or reaming), different types of drill bits (for example, drilling bit, reaming bit, chamfering bit, etc.) need to be manually replaced after stopping.

[0003] In view of the need to replace different types of drill bits, the prior art matches multiple drill chucks (each chuck is preloaded with different drill bits) on a single spindle. The chuck and the spindle are threadedly connected (for example, the spindle is externally threaded, and the chuck is internally threaded). When the drill bit needs to be switched, the current chuck is unscrewed (counter-clockwise rotation of the thread), another chuck preloaded with a drill bit is screwed on (clockwise rotation of the thread), and the drill bit is clamped by the chuck key (secondary fixation). The switching process is relatively cumbersome, and because the chuck needs to be tightened, the operator needs to exert a lot of force.

[0004] Therefore, how to design a convenient and labor-saving drill bit changing device has become a technical problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a drilling device for improving furnace head, which can achieve the technical effect of convenient and labor-saving drill bit changing compared with the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The drilling device for improving furnace head comprises a disc, a rotating shaft is fixedly arranged at the middle position of the upper end surface of the disc, the disc is of a hollow structure, a plurality of drill bits are slidably arranged in the disc, a plurality of driving parts are arranged on the disc, each driving part corresponds to each drill bit and drives the drill bit to reciprocate along the radial direction of the disc, the middle part of the disc has a containing pipe extending downward, and the inner wall of the containing pipe has a clamping structure detachably connected with the drill bit.

[0008] Further, the driving part comprises a screw rod rotationally arranged in the disc and a nut sleeve sleeved on the screw rod, the axis direction of the screw rod is parallel to the radial direction of the disc, the lower end of the nut sleeve is fixedly connected with an electromagnet, and the electromagnet is used to push the drill bit to reciprocate along the radial direction of the disc.

[0009] Further, the disc is provided with a partition plate along the radial direction of the disc, the partition plate divides the internal space of the disc into a first accommodating chamber and a second accommodating chamber, a through hole for dropping the drill bit is formed in the middle of the partition plate, the through hole communicates the first accommodating chamber and the second accommodating chamber, the second accommodating chamber communicates with the accommodating pipe, a linear sliding hole for supporting the drill bit is arranged on the partition plate and in the first accommodating chamber along the radial direction of the disc, the linear sliding hole communicates with the through hole, and the electromagnet is slidingly fitted in the linear sliding hole.

[0010] Further, the electromagnet is electrically connected with an external power supply.

[0011] Further, the rotating shaft is in a hollow structure, a pressing rod is slidingly arranged in the rotating shaft in an up-down direction, a first through hole through which the pressing rod passes is formed in the lower end surface of the rotating shaft, a second through hole corresponding to the position of the first through hole is formed in the upper surface of the disc, the second through hole communicates with the first accommodating chamber, the lower end surface of the pressing rod can abut against the upper end surface of the drill bit, a threaded hole is formed in the side wall of the rotating shaft, a bolt can be screwed into the threaded hole, and the screwed-in end of the bolt can abut against the side wall of the pressing rod.

[0012] Further, a mounting ring located in the first accommodating chamber is mounted in the disc at a position corresponding to the second through hole, the upper end surface of the mounting ring is fixedly connected with the upper end surface of the disc, the thickness of the mounting ring is the same as the wall thickness of the rotating shaft, a first bearing mounting hole is formed in the side wall of the mounting ring, a first bearing is fixedly arranged in the first bearing mounting hole, a second bearing mounting hole is formed in the side wall of the disc, and a second bearing is fixedly arranged in the second bearing mounting hole, one end of the lead screw is fixedly connected with the inner circumferential surface of the first bearing, the other end of the lead screw is fixedly connected with the inner circumferential surface of the second bearing and then passes through the side wall of the disc.

[0013] Further, a connecting rod is fixedly connected to the end of the side wall of the disc through the other end of the lead screw, a hand wheel is coaxially sleeved on the connecting rod, and the hand wheel is fixedly connected with the connecting rod.

[0014] Further, the clamping structure comprises spring sheets arranged around the side of the drill bit and a clamping groove formed in the inner wall of the accommodating pipe in a ring shape, the spring sheets are in a ring structure, the spring sheets are arranged to be downward inclined and outward extended, the top of the accommodating pipe has a downward inclined and inward extended inclined surface matched with the inclined surface of the spring sheets, the clamping groove is arranged to be downward inclined and outward extended, and the spring sheets can be clamped in the clamping groove.

[0015] The utility model discloses beneficial effect lies in:

[0016] When the drill bit needs to be replaced, the operator pushes the old drill bit upward from the containing tube, and makes the old drill bit disengage from the clamping structure on the inner wall of the containing tube, and then continues to push upward so that the old drill bit is completely separated from the containing tube, at this time, the corresponding driving part of the old drill bit drives the old drill bit to move in the radial direction of the disc away from the middle part of the disc. Then, the corresponding driving part of the new drill bit drives the new drill bit to move in the radial direction of the disc towards the middle part of the disc, and the new drill bit can fall into the containing tube, and the new drill bit can be locked by the clamping structure on the inner wall of the containing tube during the falling process, so that the new drill bit is fixed in the containing tube. In addition, since the rotating shaft is located in the middle part of the disc, and the containing tube is also located in the middle part of the containing tube, the axes of the rotating shaft, the disc, the containing tube and the drill bit are collinear, and when the rotating shaft rotates along the axial direction thereof, the drill bit can also rotate along the axial direction thereof, in other words, when the rotating shaft rotates, the drill bit can perform drilling work.

[0017] The utility model discloses an improved drilling device for furnace head, and a plurality of drill bits are pre-stored, so that the required drill bit can be found and replaced at any time when the drill bit needs to be switched, and the radial sliding switching is more convenient than the threaded dismounting of the prior art, and the clamping structure replaces the threaded connection, so that the labor-saving effect is more remarkable.

[0018] Other advantages, objects and features of the present utility model will be explained in the following description, and will be apparent to those skilled in the art based on the following description, or can be taught from the practice of the present utility model. The objects and other advantages of the present utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the improved drilling device for furnace head of the utility model.

[0020] In the figure: 1, disc; 11, containing tube; 12, mounting ring; 2, rotating shaft; 21, pressing rod; 22, bolt; 3, drill bit; 31, spring piece; 41, screw rod; 42, nut sleeve; 43, electromagnet; 5, partition plate; 51, perforation; 6, connecting rod; 7, hand wheel. DETAILED DESCRIPTION

[0021] To make the objects, technical schemes and advantages of the embodiments of the present utility model more clear, the technical scheme in the embodiments of the present utility model will be clearly and completely described below in combination with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. The components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0023] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the above description of the present application, it should be noted that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the term "same" and other terms do not mean that the components must be absolutely the same, but there can be slight differences. The term "vertical" only means that the positional relationship between the components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0026] Please refer to Figure 1 The present application provides a technical scheme: a drilling device for improving the furnace head, comprising a disc 1, a rotating shaft 2 is fixedly arranged at the middle position of the upper end surface of the disc 1, the disc 1 is of a hollow structure, a plurality of drill bits 3 are slidably arranged in the disc 1, a plurality of driving portions are provided on the disc 1, each driving portion corresponds to each drill bit 3 and drives the drill bit 3 to reciprocate along the radial direction of the disc 1, the disc 1 has a containing pipe 11 extending downward in the middle, and the inner wall of the containing pipe 11 has a clamping structure detachably connected with the drill bit 3.

[0027] When the drill bit 3 needs to be replaced, the operator pushes the old drill bit 3 upward from the containing pipe 11, and makes the old drill bit 3 disengage from the clamping structure of the inner wall of the containing pipe 11, and then continues to push upward, so that the old drill bit 3 is completely separated from the containing pipe 11, at this time, the corresponding driving part of the old drill bit 3 drives the old drill bit 3 to move away from the center of the disc 1 in the radial direction of the disc 1. Then, the corresponding driving part of the new drill bit 3 drives the new drill bit 3 to move towards the center of the disc 1 in the radial direction of the disc 1, and the new drill bit 3 can fall into the containing pipe 11, and the new drill bit 3 can be locked by the clamping structure of the inner wall of the containing pipe 11 during the falling process, so that the new drill bit 3 is fixed in the containing pipe 11. In addition, since the rotating shaft 2 is located in the center of the disc 1, the containing pipe 11 is also located in the center of the containing pipe 11, and the axes of the rotating shaft 2, the disc 1, the containing pipe 11 and the drill bit 3 are collinear, when the rotating shaft 2 rotates along the axis direction thereof, the drill bit 3 can also rotate along the axis direction thereof, in other words, when the rotating shaft 2 rotates, the drill bit 3 can perform drilling work.

[0028] The utility model is used for improving the drilling device of furnace head, and a plurality of drill bits 3 are pre-stored, so that the required drill bit 3 can be found and replaced at any time when the drill bit 3 needs to be switched, the radial sliding switching is more convenient than the threaded dismounting of the prior art, and the clamping structure replaces the threaded connection, so that the labor-saving effect is more remarkable.

[0029] In the embodiment, the driving part comprises a screw rod 41 rotatably arranged in the disc 1 and a nut sleeve 42 sleeved on the screw rod 41, the axis direction of the screw rod 41 is parallel to the radial direction of the disc 1, the lower end of the nut sleeve 42 is fixedly connected with an electromagnet 43, and the electromagnet 43 is used to push the drill bit 3 to reciprocate in the radial direction of the disc 1. In addition, the drill bit 3 is made of iron and can be magnetically attracted.

[0030] Rotating the screw rod 41 can make the nut sleeve 42 move on the screw rod 41, and in turn can drive the electromagnet 43 fixedly connected to the lower end of the nut sleeve 42 to move in the radial direction of the disc 1. After the electromagnet 43 is electrified, it can generate a magnetic force to attract the drill bit 3, and in turn can make the electromagnet 43 not only push the drill bit 3 to move towards the center of the disc 1, but also attract the drill bit 3 to move away from the center of the disc 1. With this structure, the driving part can drive the drill bit 3 to reciprocate in the radial direction of the disc 1.

[0031] In the embodiment, the disc 1 is provided with a partition plate 5 in the radial direction thereof, the partition plate 5 divides the internal space of the disc 1 into a first containing chamber and a second containing chamber, a through hole 51 for allowing the drill bit 3 to fall is formed in the middle of the partition plate 5, the through hole 51 communicates the first containing chamber and the second containing chamber, the second containing chamber communicates with the containing pipe 11, a linear sliding hole for supporting the drill bit 3 is arranged on the partition plate 5 in the first containing chamber in the radial direction thereof, the linear sliding hole communicates with the through hole 51, and the electromagnet 43 is slidingly fitted in the linear sliding hole.

[0032] The electromagnet 43 keeps a state of being always powered on, and when the electromagnet 43 reciprocates in the radial direction of the disc 1, the electromagnet 43 is in sliding fit in the linear sliding hole, the electromagnet 43 adsorbs the drill bit 3, and drives the drill bit 3 to reciprocate in the linear sliding hole. When the drill bit 3 is pushed to the through hole 51, the electromagnet 43 is powered off, and the drill bit 3 can fall from the through hole 51 downward and continue to fall into the containing pipe 11.

[0033] The cross section of the linear sliding hole of the embodiment is dovetail-shaped, and the electromagnet 43 is fixedly connected with a sliding block matched with the shape of the linear sliding hole. With this structure, the electromagnet 43 can stably apply a pushing force to the drill bit 3, and the linear sliding hole can ensure the accuracy of the moving track of the drill bit 3.

[0034] The partition plate 5 divides the internal space of the disc 1 into a first containing chamber and a second containing chamber. The height of the second containing chamber of the embodiment is greater than the length of the drill bit 3 in suspension, which can ensure that the drill bit 3 will not be abraded by the inner wall of the disc 1 during reciprocation, thereby affecting the working accuracy. In addition, since the linear sliding hole can support the drill bit 3, it can also provide additional support force to the drill bit 3, which can reduce the load of the electromagnet 43 when pulling the drill bit 3 away from the through hole 51.

[0035] In the embodiment: the magnetism of the electromagnet 43 is realized by an embedded electromagnetic coil, and the electromagnet is electrically connected with an external power supply. The model of the power supply can be Keysight N8957A. Adjusting the input current can change the magnetic force of the electromagnet 43, so as to apply different sizes of magnetic force to drill bits 3 of different weights. With this structure, the electromagnet 43 can be used to push the drill bit 3 to reciprocate in the radial direction of the disc 1.

[0036] In the embodiment: the rotating shaft 2 is in a hollow structure, and the pressure rod 21 is slidably arranged in the rotating shaft 2. A first through hole is formed in the lower end surface of the rotating shaft 2, which can be passed through by the pressure rod 21. A second through hole corresponding to the position of the first through hole is formed in the upper surface of the disc 1, and the second through hole is in communication with the first containing chamber. The lower end surface of the pressure rod 21 can be used to abut against the upper end surface of the drill bit 3. Threaded holes are formed in the side wall of the rotating shaft 2, and a bolt 22 can be screwed into the threaded holes. The screwed end of the bolt 22 can be used to abut against the side wall of the pressure rod 21.

[0037] After the drill bit 3 falls into the containing pipe 11 and is fixed by the clamping structure of the inner wall of the containing pipe 11, the bolt 22 is loosened, the screwed end of the bolt 22 is away from the side wall of the pressure rod 21, the pressure rod 21 falls downward due to its own gravity, and the lower end surface of the pressure rod 21 abuts against the upper end surface of the drill bit 3, forming a top-down pressure locking. At this time, the bolt 22 is tightened again, so that the screwed end of the bolt 22 abuts against the side wall of the pressure rod 21. With this structure, the axial fixing force of the drill bit 3 can be increased, so that the drill bit 3 is fixed more firmly, and the drill bit 3 can be prevented from retracting due to machining vibration.

[0038] In this embodiment, the mounting ring 12 is arranged in the first accommodating cavity and corresponds to the second through hole. The upper end surface of the mounting ring 12 is fixedly connected with the upper end surface of the disc 1. The thickness of the mounting ring 12 is the same as the wall thickness of the rotating shaft 2. The side wall of the mounting ring 12 is provided with a first bearing mounting hole. The first bearing is fixedly arranged in the first bearing mounting hole. The side wall of the disc 1 is provided with a second bearing mounting hole. The second bearing is fixedly arranged in the second bearing mounting hole. One end of the lead screw 41 is fixedly connected with the inner circumferential surface of the first bearing. The other end of the lead screw 41 is fixedly connected with the inner circumferential surface of the second bearing and then passes through the side wall of the disc 1. The lead screw 41 is supported by the double bearings. The mounting ring 12 provides a radial positioning reference. In this structure, the lead screw 41 can be arranged in the disc 1 to rotate. In addition, in this structure, when the nut sleeve 42 touches the mounting ring 12 when the lead screw 41 rotates, the drill bit 3 is located at the perforation 51. At this time, the operator can clearly feel that the lead screw 41 cannot continue to be screwed. At this moment, the electromagnet 43 can be powered off. The drill bit 3 can be separated from the adsorption of the electromagnet 43 and can make free fall.

[0039] In this embodiment, the other end of the lead screw 41 is fixedly connected with the connecting rod 6 which passes through the end of the side wall of the disc 1. The hand wheel 7 is coaxially arranged on the connecting rod 6. The hand wheel 7 is fixedly connected with the connecting rod 6. By rotating the hand wheel 7, the lead screw 41 can be driven to rotate.

[0040] In this embodiment, the clamping structure includes the spring sheet 31 arranged around the drill bit 3 and the clamping groove arranged in the inner wall of the accommodating tube 11 in a ring shape. The material of the spring sheet 311 can be silicon manganese spring steel. The spring sheet 31 is in a ring shape. The spring sheet 311 is arranged to be inclined downward and extend outward. The top of the accommodating tube 11 is provided with an inclined surface inclined downward and extending inward which cooperates with the inclined surface of the spring sheet 311. The clamping groove is arranged to be inclined downward and extend outward. The spring sheet 31 can be clamped in the clamping groove.

[0041] In the process of falling of the drill bit 3 into the accommodating tube 11, the spring sheet 31 first cooperates with the inclined surface of the top of the accommodating tube 11. The spring sheet 31 is gradually deformed by being pressed in the gradually reduced space. When the spring sheet 31 reaches the position of the clamping groove, the spring sheet 31 is clamped in the clamping groove under the action of the elastic potential energy of the spring sheet 31, so that the drill bit 3 is fixed in the accommodating tube 11. When it is necessary to replace the drill bit 3, the drill bit 3 is pushed upward with force. The spring sheet 31 can be separated from the clamping groove under the action of the elastic potential energy of the spring sheet 31, so that the drill bit 3 can be disassembled from the accommodating tube 11. In this structure, the clamping structure in the inner wall of the accommodating tube 11 can be detachably connected with the drill bit 3.

[0042] The above is only an embodiment of the present application, and common technical solutions and / or characteristics in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A drilling device for improving a furnace head, characterized in that The utility model provides a disc, the disc's upper end surface fixedly arranged with the pivot in the middle position, the disc is hollow structure, the disc is slidably provided with a plurality of drill bits, the disc is equipped with a plurality of drive parts, each drive part corresponds each drill bit and drives the drill bit reciprocating movement along the disc radial direction, the disc middle part has the accommodating pipe that extends downward, the accommodating pipe inner wall has the clamping structure that can be detachably connected with the drill bit.

2. A drilling apparatus for improving a burner tip as defined in claim 1, characterized in that: The drive part includes a screw rod rotatably arranged in the disc and a nut sleeve sleeved on the screw rod, the axis direction of the screw rod is parallel to the radial direction of the disc, the lower end of the nut sleeve is fixedly connected with an electromagnet, and the electromagnet is used to push the drill bit to reciprocate along the radial direction of the disc.

3. A drilling apparatus for improving a burner tip as defined in claim 2, wherein: The disc is provided with a partition plate along the radial direction thereof, the partition plate divides the internal space of the disc into a first accommodating chamber and a second accommodating chamber, a perforation for allowing the drill bit to fall is formed in the middle of the partition plate, the perforation communicates the first accommodating chamber and the second accommodating chamber, the second accommodating chamber communicates with the accommodating pipe, a linear sliding hole for supporting the drill bit is arranged on the partition plate and in the first accommodating chamber along the radial direction thereof, the linear sliding hole communicates with the perforation, and the electromagnet is slidably fitted in the linear sliding hole.

4. The drilling apparatus for improving a burner tip of claim 2, wherein: The electromagnet is electrically connected with an external power supply.

5. The drilling apparatus for improving a burner tip of claim 3, wherein: The pivot is in a hollow structure, a pressing rod is slidably arranged in the pivot, a first through hole for allowing the pressing rod to pass through is formed in the lower end surface of the pivot, a second through hole corresponding to the position of the first through hole is formed in the upper surface of the disc, the second through hole communicates with the first accommodating chamber, the lower end surface of the pressing rod can abut against the upper end surface of the drill bit, a threaded hole is formed in the side wall of the pivot, a bolt can be screwed into the threaded hole, and the screw-in end of the bolt can abut against the side wall of the pressing rod.

6. The drilling apparatus for improving a burner tip of claim 5, wherein: A mounting ring located in the first accommodating chamber is mounted in the disc at a position corresponding to the second through hole, the upper end surface of the mounting ring is fixedly connected with the upper end surface of the disc, the thickness of the mounting ring is the same as the wall thickness of the pivot, a first bearing mounting hole is formed in the side wall of the mounting ring, a first bearing is fixedly arranged in the first bearing mounting hole, a second bearing mounting hole is formed in the side wall of the disc, a second bearing is fixedly arranged in the second bearing mounting hole, one end of the screw rod is fixedly connected with the inner circumferential surface of the first bearing, and the other end of the screw rod is fixedly connected with the inner circumferential surface of the second bearing and then passes through the side wall of the disc.

7. The drilling apparatus for improving a burner tip of claim 6, wherein: The other end of the screw rod is fixedly connected with a connecting rod at the end of the side wall of the disc, a hand wheel is coaxially sleeved on the connecting rod, and the hand wheel is fixedly connected with the connecting rod.

8. The drilling apparatus for improving a burner tip of claim 3, wherein: The clamping structure includes spring sheets arranged around the lateral side of the drill bit and a clamping groove formed in the inner wall of the accommodating pipe in an annular shape, the spring sheets are in an annular structure, the spring sheets are downwardly inclined and outwardly extended, the top of the accommodating pipe has a downwardly inclined and inwardly extended inclined surface matched with the inclined surface of the spring sheets, the clamping groove is downwardly inclined and outwardly extended, and the spring sheets can be clamped in the clamping groove.

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