Adjustable drill bit positioning device in cylindrical workpiece

Abstract

The present invention discloses an adjustable drill bit positioning device in a cylindrical workpiece, comprising a fixed square frame, a sliding frame, an adjusting block, and a clamping mechanism. The central area of ​​the upper end surface of the fixed square frame is provided with a longitudinal fixed slot and a fixed shaping frame installed thereon. The sliding frame is matched and fitted on the outer side of the fixed square frame and can slide longitudinally. The bottom periphery of the adjusting block is provided with a radially distributed arc surface support seat. The present invention can position the cylindrical workpiece through the arc surface support seat, and clamp the upper end of the cylindrical workpiece through the clamping bolts, so that the cylindrical workpiece can be firmly fixed in the fixed square frame and can be immobilized. The sliding frame arranged in the transverse direction on the upper side of the sliding frame cooperates with the fixed frame arranged in the longitudinal direction on the upper side of the fixed square frame to form a positioning interval for constraining the drill rod, which can prevent the drill rod from breaking, improve processing efficiency, and reduce consumables costs.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing positioning tools, and in particular relates to an adjustable drill bit positioning device in a cylindrical workpiece. Background Art

[0002] When radial drilling is performed on the circumferential surface of a cylindrical part, due to the smooth surface of the cylindrical part, such as a thin-diameter stainless steel tube, the drill rod is very hard but very fragile, and the drill rod will basically break if it is directly pressed against the cylindrical part. At present, the surface drilling of cylindrical parts is done on a machine tool, with the cylindrical part placed on a V-shaped iron for drilling. Due to the high precision of the machine tool, the drill rod and the cylindrical part are accurately positioned, and the rod feeding force is uniform, so the processing can be normal. However, for bench drills used in homes or laboratories, they do not have the degree of precise positioning, so it is difficult to achieve effective drilling on the surface of cylindrical parts. At present, there is no universal fixture suitable for drilling and positioning on cylindrical parts. Some fixtures used for cylindrical parts use a process of marking, drilling, adjustment, and positioning, in which the adjustment requires a certain level of technical skills and is particularly time-consuming. Summary of the invention

[0003] In view of the problem that cylindrical parts are difficult to process by bench drilling and the problem that the existing positioning fixtures have poor use effect, the present invention provides a drill bit positioning device that can be adjusted inside a cylindrical workpiece.

[0004] The solution adopted by the present invention to solve the technical problem is: an adjustable drill bit positioning device in a cylindrical workpiece, comprising a fixed square frame, a sliding frame, an adjusting block, and a clamping mechanism, wherein the fixed square frame is a rectangular frame, and a fixed card slot along the longitudinal direction is arranged in the central area of ​​the upper end surface, a fixed shaping frame is matched and installed in the fixed card slot, and a longitudinal gap is arranged in the middle of the fixed shaping frame; the sliding frame is matched and sleeved on the outer side of the fixed square frame and can slide in the longitudinal direction, and a locking pin is arranged; a movable card slot along the transverse direction is arranged on the upper end surface of the sliding frame, a movable shaping frame is matched and installed in the movable card slot, and a transverse gap is arranged in the middle of the movable shaping frame; The adjusting block is matched and mounted inside the fixed square frame, and there is an adjustment gap between the adjusting block and the upper inner wall of the fixed square frame, and an adjustment mechanism is arranged between the adjusting block and the fixed square frame; the bottom of the adjusting block is an arc surface, and base guide holes distributed radially are arranged around the arc surface; an arc support seat is installed in each guide hole of the adjusting block, and each arc support seat contains an arc convex surface and a base guide rod at the bottom, and the base guide rod is matched and installed in the corresponding base guide hole, and a spring is installed in the base guide hole; a positioning nut is arranged in the middle of the fixed square frame above the arc support seat, a clamping bolt is installed in the positioning nut, and a rotating handle is arranged at the upper end of the clamping bolt.

[0005] One side or both side end faces of the fixed square frame are provided with a longitudinal fixed slot, in which a fixed shaping frame is matched and installed; at the same time, one side or both side end faces of the sliding frame are provided with a transverse movable slot, in which a movable shaping frame is matched and installed.

[0006] The adjustment block includes symmetrical and independent adjustment block one and adjustment block two, which are combined to form the adjustment block structure; the upper ends of the adjustment block one and the adjustment block two are respectively provided with vertical screw holes, and the upper end surface of the fixed square frame is provided with end surface screw holes and an adjustment screw is installed, and the adjustment screw is downwardly connected to the corresponding vertical screw hole.

[0007] A guide rail mechanism with convex-concave matching is arranged between the adjusting block and the inner wall of the fixed square frame. A guide rail mechanism with convex-concave matching is arranged between the adjusting block 1 and the adjusting block 2.

[0008] Beneficial effects of the present invention The present invention can position the cylindrical workpiece through the arc support seat, and press the upper end of the cylindrical workpiece through the clamping bolt, so that the cylindrical workpiece can be firmly fixed in the fixed square frame and stably immobile. When the fixed square frame is clamped and fixed by the bench drill fixture, the cylindrical workpiece is also fixed. The sliding frame arranged along the horizontal direction on the upper side of the sliding frame cooperates with the fixed frame arranged along the longitudinal direction on the upper side of the fixed square frame to form a positioning interval for constraining the drill rod. After the drill rod enters the fixed square frame from the positioning interval, it drills the smooth surface of the cylindrical workpiece. The present invention has the advantages of accurate positioning and high stability, can prevent the drill rod from breaking, improve processing efficiency, and reduce consumables costs.

[0009] The present invention can also adjust the cylindrical workpiece by means of the combined adjustment block to achieve the best adjustment effect.

[0010] The arc support seat at the bottom of the adjustment block is movably installed and can be adjusted and disassembled as needed. The lower end of the base guide rod is sleeved in the base guide hole and supported by a spring, which can achieve the effect of pressing and buffering the cylindrical workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention.

[0012] Figure 2 yes Figure 1 Schematic diagram of the internal cross-section structure.

[0013] Figure 3 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0014] In the figure: label 1a is adjusting block one, 1b is adjusting block two, 2 is positioning nut, 3 is clamping bolt, 4 is clamping head, 5 is rotating handle, 6 is arc support seat, 7 is base guide hole, 8 is base guide rod, 9 is spring, 10 is fixed square frame, 11 is sliding frame, 12 is locking pin, 13 is vertical screw hole, 14 is adjusting screw, 15 is movable slot, 16 is movable shaping frame, 17 is fixed slot, 18 is fixed shaping frame, 19 is adjusting gap, 20 is cylindrical workpiece, 21 is end face screw hole. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Embodiment 1: The first cylindrical workpiece internal adjustable drill bit positioning device, see Figure 1 and Figure 2 The device is used in combination with a bench drill fixture, and includes a fixed square frame 10, a sliding frame 11, a combined adjustment block, and a curved support seat 6.

[0017] Depend on Figure 2 It can be seen that the fixed square frame 10 is a rectangular frame, and not only the four outer end faces are sequentially vertical planes, but also the four inner end faces are sequentially vertical planes. Each flat end face located on the outer side can be installed in a bench drill fixture and fixed.

[0018] Depend on Figure 1 It can be seen that the combined adjustment blocks are mounted on the inner sides of the two ends of the fixed square frame 10. Each group of combined adjustment blocks includes a symmetrical and independent adjustment block 1a and an adjustment block 2 1b. The two groups of combined adjustment blocks are respectively located at the inner sides of the two ends of the fixed square frame 10. The middle part of the fixed square frame 10 is the positioning area. When the combined adjustment blocks at the two ends are adjusted, the normal operation of the middle part of the fixed square frame 10 as the positioning area is not affected.

[0019] A longitudinal fixed slot 17 is provided at the center of the upper end surface of the fixed square frame 10, and a fixed shaping frame 18 is matched and installed in the fixed slot 17. A longitudinal gap is provided in the middle of the fixed shaping frame 18, and the fixed shaping frame 18 can be replaced. Different types of fixed shaping frames 18 have different longitudinal gap widths, so as to be suitable for drill rods of various diameters to pass through.

[0020] The sliding frame 11 is matched and fitted on the outside of the fixed square frame and can slide in the longitudinal direction. A locking pin 12 is provided between the sliding frame 11 and the fixed square frame. A scale or important marking line can be provided on the upper side of the fixed square frame. When the sliding frame 11 is moved to an appropriate position, it is locked by the locking pin 12. A movable card slot 15 is also provided in the transverse direction on the upper end surface of the sliding frame 11, and a movable shaping frame 16 is matched and installed in the movable card slot 15. A transverse gap is provided in the middle of the movable shaping frame 16, and the movable shaping frame 16 can be replaced. The transverse gap widths of different types of movable shaping frames 16 are different, so as to be suitable for drill rods of various diameters to pass through.

[0021] The fixed shaping frame 18 and the movable shaping frame 16 can form a positioning channel that only allows the drill rod to pass through, so that the drill rod can be positioned and the drill rod can be prevented from radially swinging and breaking. The fixed shaping frame 18 and the movable shaping frame 16 can be made of a high polymer material with high smoothness, or a ceramic material, or a metal material, etc.

[0022] The combined adjustment block can be matched and mounted inside the fixed square frame 10, with an adjustment gap 19 between the combined adjustment block and the upper inner wall of the fixed square frame 10, and an adjustment mechanism is arranged between the combined adjustment block and the fixed square frame 10. Figure 1 and Figure 2 As shown, the combined adjustment block includes a symmetrical and independent adjustment block 1a and an adjustment block 1b, which are combined to form the adjustment block structure; the upper ends of the adjustment block 1a and the adjustment block 1b are respectively provided with vertical screw holes, and the upper end surface of the fixed frame 10 is provided with end surface screw holes and an adjustment screw is installed, and the adjustment screw is downwardly connected to the corresponding vertical screw hole.

[0023] The bottom of the combined adjustment block is an arc surface, and the periphery of the arc surface is provided with base guide holes 7 distributed in the radial direction. In addition, a guide rail mechanism with convex and concave fit can be provided between the adjustment block and the inner wall of the fixed square frame 10. A guide rail mechanism with convex and concave fit can also be provided between the adjustment block 1a and the adjustment block 2 1b.

[0024] The bottom of the combined adjustment block is provided with an arc support seat 6, which is used to support the cylindrical workpiece to maintain stable support. The combined adjustment block is preferably a symmetrical structure to achieve a balanced and stable effect. Figure 2 It can be seen that the arc surface support seat 6 includes an arc convex surface and a base guide rod 8 at the bottom, and the base guide rod 8 is matched and installed in the corresponding base guide hole 7; a spring is installed in the base guide hole 7. The arc surface support seat 6 is a movable installation type, which can be adjusted and disassembled as needed. The lower end of the base guide rod 8 is sleeved in the base guide hole 7 and supported by the spring, which can achieve the effect of pressing and buffering the cylindrical workpiece.

[0025] A positioning nut 2 is provided in the middle of the fixed square frame 10 above the arc surface support seat 6 , a clamping bolt 3 is installed in the positioning nut 2 , and a rotating handle is provided at the upper end of the clamping bolt 3 .

[0026] Embodiment 2: Based on embodiment 1, the two side end faces of the fixed square frame 10 are provided with fixed slots 17 along the longitudinal direction, and the fixed slots 17 are matched with fixed shaping frames 18; at the same time, the two side end faces of the sliding frame 11 are provided with movable slots 15 along the transverse direction, and the movable shaping frames 16 are matched with movable shaping frames 15. Therefore, after the fixed square frame 10 is turned over 90 degrees, the fixed shaping frames 18 and movable shaping frames 16 on the side can still be used to guide and position the drill rod. Moreover, the adjusting block can be adjusted by adjusting the bolt to achieve the purpose of controlling the position of the cylindrical workpiece corresponding to the drill rod channel.

[0027] Embodiment 3: Based on Embodiment 1, the complete adjustment block as a whole rather than the independent adjustment block 1a and adjustment block 2 1b can be adjusted vertically in the fixed square frame 10 by adjusting bolts or necessary guide mechanisms.

[0028] Embodiment 4: Based on Embodiment 1, a plurality of longitudinally parallel fixed slots 17 are provided on the upper end surface of the fixed square frame 10, and each fixed slot 17 is matched with a fixed shaping frame 18 of different types. Figure 3 As shown, a longitudinal gap is provided in the middle of each fixed shaping frame 18, and different types of fixed shaping frames 18 have different longitudinal gap widths, so as to be suitable for drill rods of various diameters to pass through.

[0029] At the same time, a plurality of movable slots 15 parallel to each other in the transverse direction are arranged on the upper end surface of the sliding frame 11, and a movable shaping frame 16 is matched and installed in each movable slot 15. A transverse gap is arranged in the middle of each movable shaping frame 16, and the transverse gap widths of different types of movable shaping frames 16 are different, so as to be suitable for drill rods of various diameters to pass through. Graduations or important marking lines can be arranged on the upper side of the fixed square frame, and when the sliding frame 11 is moved to an appropriate position, it is locked by the locking pin 12.

Claims

1. An adjustable drill bit positioning device in a cylindrical workpiece, characterized by: It includes a fixed square frame, a sliding frame, an adjustment block, and a clamping mechanism. The fixed square frame is a rectangular frame. A fixed card slot along the longitudinal direction is arranged in the central area of ​​the upper end surface. A fixed shaping frame is matched and installed in the fixed card slot, and a longitudinal gap is arranged in the middle of the fixed shaping frame. The sliding frame is matched and sleeved on the outer side of the fixed square frame and can slide in the longitudinal direction. A locking pin is arranged. A movable card slot along the transverse direction is arranged on the upper end surface of the sliding frame. A movable shaping frame is matched and installed in the movable card slot, and a transverse gap is arranged in the middle of the movable shaping frame. The adjustment block is matched and sleeved on the inner side of the fixed square frame, and there is an adjustment gap between the adjustment block and the upper inner wall of the fixed square frame. An adjustment mechanism is arranged between the adjustment block and the fixed square frame. One side or both side end faces of the fixed square frame are provided with a longitudinal fixed slot, in which a fixed shaping frame is matched and installed; at the same time, one side or both side end faces of the sliding frame are provided with a transverse movable slot, in which a movable shaping frame is matched and installed; a transverse sliding frame arranged on the upper side of the sliding frame cooperates with a longitudinal fixed frame arranged on the upper side of the fixed square frame to form a positioning interval for constraining the drill rod, and the drill rod enters the fixed square frame from the positioning interval to perform drilling processing on the smooth surface of the cylindrical workpiece; the bottom of the adjusting block is an arc surface, and base guide holes distributed radially are arranged around the arc surface; an arc support seat is installed in each guide hole of the adjusting block, and each The arc surface support seat is symmetrically arranged along the bottom of the adjustment block, and each arc surface support seat contains an arc-shaped convex surface and a base guide rod at the bottom. The protrusion height of each arc surface increases from the bottom of the arc surface to both sides in sequence. The base guide rod is matched and installed in the corresponding base guide hole, and a spring is installed in the base guide hole; a positioning nut is arranged in the middle of the fixed square frame above the arc surface support seat, a clamping bolt is installed in the positioning nut, and a rotating handle is arranged at the upper end of the clamping bolt; the adjustment block comprises a symmetrical and independent adjustment block one and an adjustment block two, which are combined to form the adjustment block structure; vertical screw holes are respectively arranged at the upper ends of the adjustment block one and the adjustment block two, and end screw holes are arranged on the upper end surface of the fixed square frame The hole is installed with an adjusting screw, which is connected downwardly to the corresponding vertical screw hole; the cylindrical workpiece is adjusted by the combined adjusting block to achieve the best adjustment effect; an arc support seat is provided at the bottom of the combined adjusting block, and the arc support seat is used to support the cylindrical workpiece to maintain stable support; the arc support seat contains an arc convex surface and a lower base guide rod, and the base guide rod is matched and installed in the corresponding base guide hole, and a spring is installed in the base guide hole; the arc support seat located at the bottom of the adjusting block is a movably installed type, which can be adjusted and disassembled as needed; the lower end of the base guide rod is mounted in the base guide hole and supported by the spring, which can achieve the effect of pressing and buffering the cylindrical workpiece.

2. The adjustable drill bit positioning device in a cylindrical workpiece according to claim 1, characterized in that: A guide rail mechanism with convex and concave matching is arranged between the adjusting block and the inner wall of the fixed square frame.

3. The adjustable drill bit positioning device in a cylindrical workpiece according to claim 1, characterized in that: A guide rail mechanism with convex and concave matching is arranged between the first adjusting block and the second adjusting block.

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