Core drilling self-clamping device

Abstract

The present invention relates to the technical field of drilling machine fixtures, and specifically to a core drilling self-clamping device, including a chuck 1 and a chuck 2, wherein the clamping surface of the chuck 1 is set to be an arc or a V shape, the clamping surface of the chuck 2 is set to be an arc or a V shape corresponding to the chuck 1, and the lower part of the clamping surface of the chuck 2 is set to be a slope that gradually bulges from top to bottom; the chuck 1 is fixedly connected to a fixed bearing plate 1, and the middle part of the chuck 2 is hingedly connected to a movable bearing plate 2, and the bearing plate 2 is connected to a translation drive mechanism, and the translation drive mechanism is used to drive the bearing plate 2 to approach or move away from the bearing plate 1. This device can ensure that the raw material core is accurately vertical and the loading is fast. The chuck 2 generates a holding force by itself under the dead weight of the raw material core and the pressure of the drill bit. After the drill bit is lifted, the holding force of the chuck is released without manual release. After the core drilling is completed, the two chucks do not need to be cleaned, which shortens the loading time. The use of this device can greatly improve the efficiency of core drilling.

Description

Technical Field

[0001] The invention relates to the technical field of drilling machine fixtures, and in particular to a core drilling self-clamping device. Background Art

[0002] Core drilling currently uses raw cores (core diameter is usually greater than 50mm), saws them into cylinders greater than 100mm, and then clamps them vertically with a manual straight fixture. When clamping, the handle needs to be shaken manually. After debugging the rocker drill to make the drill bit concentric with the raw core, turn on the cooling water to drill. After drilling, shake the fixture handle to release the clamping state, lift the drill to remove the finished product, and clean up the waste. In addition, the raw core diameters of different batches of incoming materials are different.

[0003] The existing core drilling work has the following two problems: Problem 1: The vertical clamping process of the raw core will produce displacement and the verticality is inaccurate; Problem 2: Every time a core is drilled, the radial drill must be repeatedly operated to adjust the drill bit to the concentric state of the raw core, which is time-consuming and labor-intensive and has low work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a core drilling self-clamping device in view of the above-mentioned problems and shortcomings. The core drilling self-clamping device adopts an arc-shaped or V-shaped clamping surface to ensure that the raw material core is accurately vertical. The core drilling self-clamping device is used for quick loading. The second chuck generates a holding force by itself under the dead weight of the raw material core and the pressure of the drill bit, and no manual tightening is required. After drilling, the holding force of the chuck is released after the drill bit is lifted, and no manual tightening is required. After the core drilling is completed, the two chucks do not need to be cleaned, which shortens the loading time. The use of this equipment can greatly improve the efficiency of core drilling, reduce processing costs, and improve economic benefits.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is:

[0006] A core drilling self-clamping device comprises a chuck 1 and a chuck 2, wherein the clamping surface of the chuck 1 is arranged to be an arc shape or a V shape, the clamping surface of the chuck 2 is arranged to be an arc shape or a V shape corresponding to the chuck 1, and the lower part of the clamping surface of the chuck 2 is arranged to have a slope which gradually rises from top to bottom; the chuck 1 is fixedly connected to a fixed bearing plate 1, the middle part of the chuck 2 is hingedly connected to a movably arranged bearing plate 2, the bearing plate 2 is connected to a translation drive mechanism, and the translation drive mechanism is used to drive the bearing plate 2 to approach or move away from the bearing plate 1.

[0007] Furthermore, in the above-mentioned core drilling self-clamping device, the chuck one includes a chuck body and a hard elastic material layer arranged on the inner side of the chuck body, and the chuck two includes a chuck body, a hard elastic material layer arranged on the upper inner side of the chuck body, and a sloped metal material layer arranged on the lower inner side of the chuck body.

[0008] Furthermore, in the above-mentioned core drilling self-clamping device, the slope of the lower part of the clamping surface of the second chuck is an arc slope or an oblique slope.

[0009] Furthermore, in the above-mentioned core drilling self-clamping device, the chuck one is connected to the load-bearing plate one through fasteners, the chuck two is hingedly connected to the transition connecting plate, and the transition connecting plate is connected to the load-bearing plate two through fasteners.

[0010] Furthermore, in the above-mentioned core drilling self-clamping device, the chuck 1 and the bearing plate 1, and the transition connecting plate and the bearing plate 2 are all connected by pins, and the pins are perpendicular to the connecting surface between the chuck 1 and the bearing plate 1 and the connecting surface between the transition connecting plate and the bearing plate, and disassembly notches are provided between the connecting surfaces of the chuck 1 and the bearing plate 1, and between the connecting surfaces of the transition connecting plate and the bearing plate 2.

[0011] Furthermore, in the above-mentioned core drilling self-clamping device, a slider is provided at the lower part of the bearing plate 2, and is slidably connected to the guide rail on the machine base through the slider. The translation drive mechanism includes a screw and a screw support seat. One end of the screw is screwed into the screw hole on the bearing plate 2, and the other end is connected to a handwheel. The screw support seat is arranged on the side of the machine base to support the screw and limit the axial movement of the screw.

[0012] Furthermore, in the above-mentioned core drilling self-clamping device, a groove for limiting the axial movement of the screw is provided in the screw support seat, and a shoulder cooperating with the groove is provided on the screw.

[0013] Furthermore, in the above-mentioned core drilling self-clamping device, a baffle is connected to the inner lower part of the second bearing plate, and the baffle is used to shield the lower lead screw and guide rail.

[0014] Furthermore, in the above-mentioned core drilling self-clamping device, the load-bearing plate is fixedly connected to one side of the base plate, a waste discharge hole is provided in the middle of the base plate, and the machine base is fixedly connected to the other side of the base plate, and its inner side extends into the upper part of the waste discharge hole for a certain distance.

[0015] Furthermore, in the above-mentioned core drilling self-clamping device, the hard elastic material layer is a plastic layer or a hard rubber layer.

[0016] Beneficial effects of a core drill self-clamping device of the present invention:

[0017] The core drilling self-clamping device of the present invention can ensure that the raw material core is accurately vertical because the clamping surfaces of the two chucks are set to be arc-shaped or V-shaped. After the radial drill bit is positioned and the drilling size is set, it can fully ensure that the raw material core is concentric with the drill bit, and there is no need to repeatedly adjust the drill bit position after each loading; the core drilling self-clamping device is used for fast loading, and the chuck two can generate a holding force by itself under the dead weight of the raw material core and the pressure of the drill bit, and there is no need for manual tightening; after drilling is completed, the holding force of the chuck is released after the drill bit is lifted, and there is no need to manually release the tightening; after core drilling is completed, the outer ring waste of the raw material core can freely fall into the waste discharge hole of the bottom plate under the impact of the drill bit cooling water, and be discharged downward, and the two chucks do not need to be cleaned, thereby shortening the loading time.

[0018] The core drill self-clamping device of the present invention can adjust the distance between the first chuck and the second chuck through a translation driving mechanism to adapt to raw material cores with different diameters.

[0019] The core drill of the present invention is taken from the clamping device, the inner side of the first chuck and the inner upper part of the second chuck are made of a hard elastic material layer, which can improve the holding force of the chuck on the raw material core, and the inner lower part of the second chuck is set as a metal material layer with a slope. The metal material layer has a high hardness. The raw material core can only gradually convert the horizontal force generated on the second chuck into the holding force of the upper part of the second chuck on the raw material core through the rotation of the second chuck, and the raw material core cannot be squeezed out of the two chucks.

[0020] The core drill of the present invention is taken from the clamping device, and the two clamps and the bearing plate are connected by pins, so it is convenient to replace clamps of different specifications to adapt to different batches of raw material cores.

[0021] The core drill self-clamping device of the present invention has reasonable structural design, solid and reliable components, has linkage self-tightening performance when working, does not need to consume electricity, hydraulic, pneumatic and other energy sources, and has the characteristics of energy saving and safety.

[0022] The core drilling self-clamping device of the present invention is used to drill cores. Compared with the current status of core drilling work, the device has a novel design and is practical. It can improve the core processing accuracy, reduce labor intensity, save time, and improve work efficiency, thereby reducing processing costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of a core drilling self-clamping device according to an embodiment of the present invention.

[0024] Figure 2 This is one of the structural schematic diagrams of a core drill clamping a raw material core according to an embodiment of the present invention.

[0025] Figure 3This is the second structural schematic diagram of a core drill self-clamping device clamping a raw material core according to an embodiment of the present invention.

[0026] Figure 4 yes Figure 1 AA cross-sectional structure schematic diagram.

[0027] Figure 5 yes Figure 1 Schematic diagram of the BB cross-sectional structure.

[0028] Figure 6 yes Figure 1 Schematic diagram of the CC cross-sectional structure.

[0029] Figure 7 yes Figure 1 Schematic diagram of DD cross-sectional structure.

[0030] Figure 8 2 is a schematic diagram of the three-dimensional structure of a chuck 1 according to an embodiment of the present invention.

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the chuck 2 according to an embodiment of the present invention.

[0032] Fig.10 1 is a schematic diagram of the enlarged structure of part I according to an embodiment of the present invention.

[0033] Fig.11 yes Figure 3 Schematic diagram of the top view structure.

[0034] Fig.12 It is a schematic diagram of the exploded structure of the assembly of the second chuck, the pin shaft and the second bearing plate according to an embodiment of the present invention.

[0035] In the figure: 1 is chuck one, 1-1 is chuck body, 1-2 is hard elastic material layer, 2 is chuck two, 2-1 is chuck body, 2-2 is hard elastic material layer, 2-3 is metal material layer, 3 is load-bearing plate one, 4 is load-bearing plate two, 5 is disassembly notch, 6 is pin, 7 is slider, 8 is machine base, 9 is lead screw, 10 is lead screw support seat, 11 is hand wheel, 12 is shaft shoulder, 13 is baffle, 14 is bottom plate, 15 is waste discharge hole, 16 is raw material core, 17 is transition connecting plate, 18 is pin shaft. DETAILED DESCRIPTION

[0036] The core drilling self-clamping device of the present invention is described in more detail below with reference to the accompanying drawings and through specific implementations.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] See also Figure 1-Figure 11 The present embodiment discloses a core drilling self-clamping device, including chuck 1 and chuck 2, the clamping surface of chuck 1 is set to be an arc shape or a V shape, the clamping surface of chuck 2 is set to be an arc shape or a V shape corresponding to chuck 1, and the lower part of the clamping surface of chuck 2 is set to be a slope gradually convex from top to bottom; chuck 1 is fixedly connected to a fixed bearing plate 1, and the middle part of chuck 2 is hingedly connected to a movably set bearing plate 2 through a pin shaft 18, and the bearing plate 2 is connected to a translation drive mechanism, and the translation drive mechanism is used to drive the bearing plate 2 to approach or move away from the bearing plate 1, so as to adapt to raw material cores of different diameters. When the raw material core moves downward and contacts the lower part of the second chuck, driven by the deadweight of the raw material core, the lower part of the second chuck expands horizontally. Under the action of the lever force, the upper part of the second chuck is linked to generate a holding force on the raw material core. When the drill bit is working, the vertical pressure on the raw material core increases, and then the horizontal expansion force generated by the lower part of the second chuck increases, so that the holding force generated by the upper part of the second chuck also increases accordingly. After the core drilling is completed, the drill bit is lifted, the horizontal expansion force on the lower part of the second chuck is released, and the holding force on its upper part is also released accordingly.

[0039] In this embodiment, preferably, chuck one includes a chuck body and a hard elastic material layer arranged on the inner side of the chuck body, and chuck two includes a chuck body, a hard elastic material layer arranged on the upper inner side of the chuck body, and a sloped metal material layer arranged on the lower inner side of the chuck body. Providing the hard elastic material layer can enhance the bonding effect of chuck one and chuck two on the raw material core, and providing the metal material layer facilitates a smooth transition between the hard elastic material layer and the metal material layer. The metal material layer is made of high-strength metal material to ensure that the raw material core will not be squeezed out from the bottom. In addition, the hard elastic material layer and the metal material layer can be bonded to the inner side of the chuck body using a high-strength adhesive.

[0040] In this embodiment, preferably, the slope of the lower part of the clamping surface of the second chuck is an arc slope, which can make the lateral dimension of the lower part of the second chuck change more greatly, and the raw material core is not easy to fall out. Of course, a diagonal slope can also be used in other embodiments, but the lateral dimension of the diagonal slope changes slowly and is not as good as the arc slope in this embodiment.

[0041] In this embodiment, preferably, chuck one is connected to load-bearing plate one by fasteners, chuck two is hingedly connected to the transition connecting plate, and the transition connecting plate is connected to load-bearing plate two by fasteners, so as to facilitate the replacement of chuck one and chuck two. Specifically, the chuck 1 and the bearing plate 1, the transition connecting plate and the bearing plate 2 are all connected by pins, and the pins are tightly matched with the chuck 1, the bearing plate 1, the transition connecting plate and the pin holes on the bearing plate. The pins are perpendicular to the connecting surface between the chuck 1 and the bearing plate 1 and the connecting surface between the transition connecting plate and the bearing plate. The clamping force of the chuck 1 and the chuck 2 on the raw material core is perpendicular to the contact surface between the chuck 1 and the chuck 2 and the raw material core, and the reaction force of the clamping force is perpendicular to the connecting surface between the chuck 1 and the bearing plate 1 and the connecting surface between the transition connecting plate and the bearing plate. In this way, the reaction force of the clamping force is consistent with the axial direction of the pin, and there is no shear force on the pin, which can extend the service life of the pin. Disassembly notches are provided between the connecting surfaces of the chuck 1 and the bearing plate 1 and between the connecting surfaces of the transition connecting plate and the bearing plate 2, so that the chuck 1 and the chuck 2 are easy to disassemble and chucks of different specifications are convenient to replace.

[0042] In this embodiment, preferably, a slider is provided at the lower portion of the bearing plate 2, and is slidably connected to the guide rail on the machine base through the slider. The translation drive mechanism includes a screw and a screw support seat. One end of the screw is screwed into the screw hole on the bearing plate 2, and the other end is connected to a handwheel. The screw support seat is arranged on the side of the machine base to support the screw and limit the axial movement of the screw. The screw can be rotated by rotating the handwheel. The axial rotation of the screw does not move, which can drive the bearing plate 2 and the chuck 2 to move horizontally and can adapt to raw material cores of different diameters.

[0043] Specifically, a clamping groove for limiting the axial movement of the screw is provided in the screw support seat, and a shaft shoulder cooperating with the clamping groove is provided on the screw.

[0044] In this embodiment, preferably, a baffle is connected to the inner lower part of the bearing plate 2, and the baffle is used to shield the lower screw and guide rail to prevent the outer ring waste of the raw material core from damaging the screw and falling into the guide rail after drilling the core.

[0045] In this embodiment, preferably, the load-bearing plate 1 is fixedly connected to one side of the base plate, and a waste discharge hole is provided in the middle of the base plate. After the core drilling is completed, the waste in the outer circle of the raw core can fall freely into the waste discharge hole under the impact of the drill bit cooling water, and then be discharged downward. The machine base is fixedly connected to the other side of the base plate, and its inner side extends into the upper part of the waste discharge hole for a certain distance, so that the chuck 1 and the chuck 2 can clamp the raw core within a larger diameter range.

[0046] In this embodiment, specifically, the hard elastic material layer is a plastic layer or a hard rubber layer.

[0047] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The use of "first", "second" and similar words in the specification and claims of this application does not indicate any order, quantity or importance, but is only used to distinguish different components. Similarly, the use of "one" or "an" and other similar words does not necessarily indicate a quantitative limitation. "Include" or "comprising" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0048] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A core drilling self-clamping device, characterized in that: It comprises a chuck 1 and a chuck 2, wherein the clamping surface of the chuck 1 is arranged in an arc shape or a V shape, the clamping surface of the chuck 2 is arranged in an arc shape or a V shape corresponding to the chuck 1, and the lower part of the clamping surface of the chuck 2 is arranged in a slope gradually convex from top to bottom; the chuck 1 is fixedly connected to a fixed bearing plate 1, the middle part of the chuck 2 is hingedly connected to a movably arranged bearing plate 2, the bearing plate 2 is connected to a translation driving mechanism, and the translation driving mechanism is used to drive the bearing plate 2 to approach or move away from the bearing plate 1; The first chuck includes a chuck body and a hard elastic material layer arranged on the inner side of the chuck body, and the second chuck includes a chuck body, a hard elastic material layer arranged on the upper inner side of the chuck body, and a metal material layer with a slope arranged on the lower inner side of the chuck body; A slider is provided at the lower part of the load-bearing plate 2, and is slidably connected to the guide rail on the machine base through the slider. The translation drive mechanism includes a screw and a screw support seat. One end of the screw is screwed into the screw hole on the load-bearing plate 2, and the other end is connected to a handwheel. The screw support seat is arranged on the side of the machine base to support the screw and limit the axial movement of the screw.

2. A core drilling self-clamping device according to claim 1, characterized in that: The slope of the lower part of the clamping surface of the second clamp is an arc slope or an oblique slope.

3. A core drilling self-clamping device according to claim 2, characterized in that: The first clamp is connected to the first load-bearing plate through a fastener, the second clamp is hingedly connected to the transition connecting plate, and the transition connecting plate is connected to the second load-bearing plate through a fastener.

4. A core drilling self-clamping device according to claim 3, characterized in that: The chuck 1 and the load-bearing plate 1, and the transition connecting plate and the load-bearing plate 2 are all connected by pins, and the pins are perpendicular to the connecting surface between the chuck 1 and the load-bearing plate 1 and the connecting surface between the transition connecting plate and the load-bearing plate. Disassembly notches are provided between the connecting surfaces of the chuck 1 and the load-bearing plate 1, and between the connecting surfaces of the transition connecting plate and the load-bearing plate 2.

5. The core drilling self-clamping device according to claim 1, characterized in that: A clamping groove for limiting the axial movement of the lead screw is arranged in the lead screw support seat, and a shaft shoulder cooperating with the clamping groove is arranged on the lead screw.

6. A core drilling self-clamping device according to claim 1, characterized in that: A baffle is connected to the inner lower part of the second bearing plate, and the baffle is used to shield the lead screw and guide rail at the lower part.

7. A core drilling self-clamping device according to claim 1, characterized in that: The bearing plate is fixedly connected to one side of the bottom plate, a waste discharge hole is arranged in the middle of the bottom plate, and the machine base is fixedly connected to the other side of the bottom plate, and its inner side extends into the upper part of the waste discharge hole for a certain distance.

8. The core drilling self-clamping device according to claim 1, characterized in that: The hard elastic material layer is a plastic layer or a hard rubber layer.

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