Internal adjusting type drill bit positioning device for cylindrical workpiece
Technical Field
The invention belongs to the technical field of machining positioning tools, and particularly relates to an internal adjusting type drill bit positioning device for a cylindrical workpiece.
Background
When the circumferential surface of the cylindrical part is drilled radially, the drill rod is basically broken when the drill rod is directly pressed against the cylindrical part because the surface of the cylindrical part is smooth, such as a small-diameter stainless steel pipe, and the drill rod has high hardness but is fragile. At present, the processing of drilling holes on the surface of a cylindrical part is carried out on a machine tool, the cylindrical part is placed on a V-shaped iron for drilling holes, and the drill rod and the cylindrical part are accurately positioned due to high machine tool precision, and the rod feeding force is uniform, so that the drilling machine can be normally processed. But for bench drills used in homes or laboratories, there is no degree of precision in positioning, so it is difficult to achieve efficient drilling of cylindrical part surfaces. At present, no universal fixture is suitable for drilling and positioning on a cylindrical part, and some fixtures applied to the cylindrical part adopt the processes of scribing, drilling, adjusting and positioning, wherein the adjustment needs a certain technical level and is particularly time-consuming.
Disclosure of Invention
Aiming at the problems that the cylindrical part is difficult to process through a bench drill and the use effect of the existing positioning clamp is poor, the invention provides an internal adjusting type drill positioning device for a cylindrical workpiece.
The technical problem is solved by adopting the scheme that the adjustable drill bit positioning device in a cylindrical workpiece comprises a fixed square frame body, a sliding frame, an adjusting block and a pressing mechanism, wherein the fixed square frame body is a rectangular frame, a fixing clamping groove along the longitudinal direction is formed in the central area of the upper end face, a fixing shaping frame is installed in the fixing clamping groove in a matched mode, a longitudinal gap is formed in the middle of the fixing shaping frame, the sliding frame is sleeved on the outer side of the fixed square frame in a matched mode and can longitudinally slide, a locking pin is arranged, a movable clamping groove along the transverse direction is formed in the upper end face of the sliding frame, a movable shaping frame is installed in the movable clamping groove in a matched mode, a transverse gap is formed in the middle of the movable shaping frame, the adjusting block is sleeved on the inner side of the fixed square frame body in a matched mode, an adjusting gap is formed between the adjusting block and the inner wall of the upper portion of the fixed square frame body, an adjusting mechanism is arranged between the adjusting block and the adjusting block, the adjusting block bottom is an arc surface, base guide holes distributed along the radial direction are formed in the periphery of the arc surface, cambered surface support seats are installed in the guide holes of the adjusting block, each cambered surface support seat comprises a cambered surface guide rod and a base guide rod arranged on the lower portion, the cambered surface guide bolt is installed in the corresponding base guide holes, the base guide hole is arranged in the base guide hole, the middle of the base guide hole is arranged in the base guide hole, a rotary bolt is arranged on the base guide bolt, and a positioning nut is arranged at the middle of the position nut and is arranged at the middle of the position nut.
The end face of one side or two sides of the fixed square frame body is provided with a fixing clamping groove along the longitudinal direction, a fixing shaping frame is arranged in the fixing clamping groove in a matching way, and meanwhile, the end face of one side or two sides of the sliding frame is provided with a movable clamping groove along the transverse direction, and a movable shaping frame is arranged in the movable clamping groove in a matching way.
The adjusting block comprises a first adjusting block and a second adjusting block which are symmetrical and independent, the first adjusting block and the second adjusting block are combined to form the adjusting block structure, vertical screw holes are formed in the upper ends of the first adjusting block and the second adjusting block respectively, end face screw holes are formed in the upper end face of the fixed square frame body, an adjusting screw is arranged on the upper end face of the fixed square frame body, and the adjusting screw is downwards connected into the corresponding vertical screw holes.
Between the regulating block and the inner wall of the fixed square frame body is provided with a convex-concave matched guide rail mechanism. A guide rail mechanism which is matched with the first adjusting block in a convex-concave way is arranged between the first adjusting block and the second adjusting block.
The invention has the beneficial effects that the cylindrical workpiece can be positioned through the cambered surface supporting seat, and the upper end of the cylindrical workpiece is tightly pressed through the pressing bolt, so that the cylindrical workpiece can be firmly fixed in the fixed square frame body and is stable and motionless. After the fixed frame body is clamped and fixed by the bench drill clamp, the cylindrical workpiece is also fixed. And the transverse sliding frame arranged on the upper side of the sliding frame is matched with the longitudinal fixed frame arranged on the upper side of the fixed frame body to form a positioning interval for restraining the drill rod, and the drill rod drills the smooth surface of the cylindrical workpiece after entering the fixed frame body from the positioning interval. The invention has the advantages of accurate positioning and high stability, can prevent the drill rod from being broken, improves the processing efficiency and reduces the consumable cost.
The invention can also adjust the cylindrical workpiece through the combined adjusting blocks, so as to achieve the best adjusting effect.
The cambered surface supporting seat at the bottom of the adjusting block is movably mounted, can be adjusted and disassembled according to requirements, and the lower end of the base guide rod is sleeved at the base guide hole and then supported by the spring, so that the cylindrical workpiece can be pressed and buffered.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the internal cross-sectional structure of fig. 1.
FIG. 3 is a second perspective view of the present invention.
In the figure, reference numeral 1a is an adjusting block I, 1b is an adjusting block II, 2 is a positioning nut, 3 is a compression bolt, 4 is a compression head, 5 is a rotating handle, 6 is a cambered surface supporting seat, 7 is a base guide hole, 8 is a base guide rod, 9 is a spring, 10 is a fixed square frame, 11 is a sliding frame, 12 is a locking pin, 13 is a vertical screw hole, 14 is an adjusting screw, 15 is a movable clamping groove, 16 is a movable shaping frame, 17 is a fixed clamping groove, 18 is a fixed shaping frame, 19 is an adjusting gap, 20 is a cylindrical workpiece, and 21 is an end surface screw hole.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1 first type of adjustable bit positioning device in cylindrical workpiece, see fig. 1 and 2. The device is used in combination with bench drill fixture components, and comprises a fixed square frame body 10, a sliding frame 11, a combined adjusting block, a cambered surface supporting seat 6 and the like.
As can be seen from fig. 2, the fixed frame 10 is a rectangular frame, and not only the four outer end faces are planes which are sequentially perpendicular, but also the four inner end faces are planes which are sequentially perpendicular. The flat end surfaces positioned on the outer sides can be mounted in the bench drill clamp to be clamped.
As can be seen from fig. 1, the inner sides of the two ends of the fixed frame 10 are sleeved with combined adjusting blocks. Each group of combined regulating blocks comprises a symmetrical and independent regulating block one 1a and a regulating block two 1b. The two groups of combined regulating blocks are respectively positioned at the inner side positions of the two ends of the fixed square frame body 10. The middle part of the fixed square frame 10 is a positioning area. When the combined adjusting blocks at the two ends are adjusted, the middle part of the fixed square frame 10 is not affected to normally work in a positioning area.
A fixing clamping groove 17 along the longitudinal direction is arranged in the central area of the upper end face of the fixing square frame body 10, and a fixing and shaping frame 18 is arranged in the fixing clamping groove 17 in a matching way. The middle part of the fixed shaping frame 18 is provided with a longitudinal gap, the fixed shaping frame 18 can be replaced, and the longitudinal gap widths of the fixed shaping frames 18 of different models are different, so that the fixed shaping frame is suitable for passing drill rods with various diameters.
The sliding frame 11 is matched and sleeved on the outer side of the fixed square frame and can longitudinally slide, a locking pin 12 is arranged between the sliding frame 11 and the fixed square frame, scales or important mark lines can be arranged on the upper side of the fixed square frame, and when the sliding frame 11 moves to a proper position, the sliding frame is locked through the locking pin 12. A movable clamping groove 15 is arranged on the upper end surface of the sliding frame 11 along the transverse direction, and a movable shaping frame 16 is arranged in the movable clamping groove 15 in a matching way. The middle part of the movable shaping frame 16 is provided with a transverse gap, the movable shaping frame 16 can be replaced, and the width of the transverse gap is different among the movable shaping frames 16 of different types, so that the movable shaping frame is suitable for passing drill rods with various diameters.
The fixed forming frame 18 and the movable forming frame 16 can form a positioning channel which only allows the drill rod to pass through, so that the drill rod can be positioned, and the drill rod can be prevented from being broken due to radial swing. The fixed and movable setting frames 18 and 16 may be made of a polymer material with high smoothness, or a ceramic material, or a metal material.
The combined adjusting block can be matched and sleeved on the inner side of the fixed square frame body 10, an adjusting gap 19 is formed between the combined adjusting block and the inner wall of the upper part of the fixed square frame body 10, and an adjusting mechanism is arranged between the combined adjusting block and the fixed square frame body 10. Referring to fig. 1 and 2, the combined adjusting block comprises a symmetrical and independent adjusting block 1a and an adjusting block 1b, which are combined to form the adjusting block structure, wherein vertical screw holes are respectively formed at the upper ends of the adjusting block 1a and the adjusting block 1b, an end face screw hole is formed in the upper end face of the fixed frame body 10, an adjusting screw is arranged on the end face screw hole, and the adjusting screw is downwards connected into the corresponding vertical screw hole.
The bottom of the combined adjusting block is an arc surface, and base guide holes 7 distributed along the radial direction are arranged on the periphery of the arc surface. In addition, a guide rail mechanism matched with the inner wall of the fixed frame 10 in a convex-concave way can be arranged between the adjusting block and the inner wall of the fixed frame. A guide rail mechanism matched with the first adjusting block 1a and the second adjusting block 1b in a convex-concave way can be arranged between the first adjusting block and the second adjusting block.
The bottom of the combined adjusting block is provided with a cambered surface supporting seat 6, and the purpose of the combined adjusting block is to be used for supporting a cylindrical workpiece to keep stable support. The combined regulating block is preferably of a symmetrical structure, so that the effect of balance stability can be achieved. As can be seen from FIG. 2, the cambered surface supporting seat 6 comprises a cambered convex surface and a lower base guide rod 8, the base guide rod 8 is matched and installed in a corresponding base guide hole 7, and a spring is installed in the base guide hole 7. The cambered surface supporting seat 6 is movably mounted, can be adjusted and disassembled according to the requirement, and the lower end of the base guide rod 8 is sleeved at the base guide hole 7 and then supported by a spring, so that the cylinder workpiece can be pressed and buffered.
The middle part of the fixed square frame body 10 positioned above the cambered surface supporting seat 6 is provided with a positioning nut 2, a compression bolt 3 is arranged in the positioning nut 2, and the upper end of the compression bolt 3 is provided with a rotating handle.
In the embodiment 2, on the basis of the embodiment 1, two side end surfaces of the fixed square frame body 10 are provided with fixed clamping grooves 17 along the longitudinal direction, fixed shaping frames 18 are arranged in the fixed clamping grooves 17 in a matching mode, meanwhile, two side end surfaces of the sliding frame 11 are provided with movable clamping grooves 15 along the transverse direction, and movable shaping frames 16 are arranged in the movable clamping grooves 15 in a matching mode. Thus, after the fixed frame 10 is turned 90 degrees, the fixed shaping frame 18 and the movable shaping frame 16 on the side surfaces of the fixed frame can still be used for guiding and positioning the drill rod. And the adjusting block can be adjusted through the adjusting bolt so as to achieve the purpose of controlling the position correspondence of the cylindrical workpiece and the drill rod channel.
Example 3 based on example 1, this complete block was integrated instead of the separate first 1a and second 1b blocks. The vertical adjustment of the adjusting block in the fixed frame 10 is achieved by means of adjusting bolts or necessary guiding mechanisms.
Embodiment 4 on the basis of embodiment 1, a plurality of fixing clamping grooves 17 which are parallel in the longitudinal direction are arranged on the upper end face of the fixing frame body 10, and fixing shaping frames 18 of different types are respectively arranged in each fixing clamping groove 17 in a matching mode. As shown in fig. 3, a longitudinal gap is provided in the middle of each fixed setting frame 18, and different types of fixed setting frames 18 have different longitudinal gap widths, so that the fixed setting frames are suitable for passing drill rods with various diameters.
Meanwhile, a plurality of movable clamping grooves 15 which are parallel in the transverse direction are arranged on the upper end face of the sliding frame 11, and a movable shaping frame 16 is arranged in each movable clamping groove 15 in a matching mode. The middle part of each movable shaping frame 16 is respectively provided with a transverse gap, and the width of the transverse gaps among the movable shaping frames 16 of different models is different, so that the movable shaping frames are suitable for passing drill rods with various diameters. The upper side of the fixed square frame may be provided with graduations or important mark lines, which are locked by locking pins 12 when the sliding frame 11 is moved to a proper position.