CN117696969B - Bolt thread drilling positioning device and method - Google Patents

Bolt thread drilling positioning device and method Download PDF

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Publication number
CN117696969B
CN117696969B CN202410152939.3A CN202410152939A CN117696969B CN 117696969 B CN117696969 B CN 117696969B CN 202410152939 A CN202410152939 A CN 202410152939A CN 117696969 B CN117696969 B CN 117696969B
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China
Prior art keywords
positioning
bolt
plate
drilling
thread
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CN202410152939.3A
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CN117696969A (en
Inventor
刘利新
孙凯
孙静远
邓兴智
闫玉刚
于洋
姜申良
黄同昭
皇万宇
李朋笑
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Oriental Bluesky Titanium Technology Co ltd
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Oriental Bluesky Titanium Technology Co ltd
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Priority to CN202410152939.3A priority Critical patent/CN117696969B/en
Publication of CN117696969A publication Critical patent/CN117696969A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B23B47/28—Drill jigs for workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

The invention discloses a bolt thread drilling positioning device and method, and belongs to the technical field of fastener machining. The drilling positioning device comprises a base, a first vertical plate, a second vertical plate, a supporting mechanism, a positioning adjusting mechanism and a positioning locking mechanism; the positioning adjusting mechanism comprises a positioning plate, a positioning sleeve and a pressing plate, wherein a rotating positioning groove is formed in the positioning plate, the positioning sleeve is in clearance fit with the rotating positioning groove, an internal thread is arranged in the positioning sleeve, and the pressing plate is used for locking the positioning sleeve after being adjusted on the positioning plate. The method for drilling the screw threads comprises the following steps: and (5) adjusting the position of the positioning sleeve and drilling. The device can be used on the drilling machine, so that the drill point of the drill bit can be aligned with the thread trough when the bolt to be processed on the drilling machine drills at each positioning, the left and right stress of the drill bit is uniform, eccentric force is not generated, drilling resistance is effectively reduced, drilling on the surface of the thread is realized, the thread drilling cost is reduced, and the thread drilling quality is guaranteed.

Description

Bolt thread drilling positioning device and method
Technical Field
The invention relates to a bolt thread drilling positioning device and method, and belongs to the technical field of fastener machining.
Background
The screw rod of bolt is last to have the screw thread, and accessible screw thread realizes the connection location of bolt, and in order to be able to fix the bolt more stable in corresponding position, reduces the not hard up emergence of bolt, sometimes still need set up the pinhole in the screw thread department of bolt, after the bolt is installed in place, can install the round pin axle in pinhole position, avoid the bolt not hard up droing. Because the screw thread of the bolt has the fluctuation, and the screw rod of the bolt is a cylindrical surface, the screw thread surface of the bolt is complex, and the hole for drilling the open pin hole on the screw thread surface cannot be directly realized on a common drilling machine at present.
The reason that the common drilling machine cannot process the pin holes on the threads is that the common drilling machine such as a radial drilling machine and a bench drill does not have the capability of accurate positioning due to low design and precision, certain difficulty exists in non-planar drilling, particularly in the case of the surface complex threaded surfaces such as the wavy lines and the cylindrical surfaces, and because the common drilling machine is used for clamping in a single tool position, only one tool can be clamped at the same time, only the drill bit is installed without drilling a center hole, and the facing surface complex threads are difficult to process on the common machine because the tip of the drill bit is not positioned at the trough position of the threads but positioned at the position far away from the trough position of the threads, such as the crest position, the drill bit is easy to have uneven stress, the drill bit is not easy to drill, the drill bit is easy to deviate, the pin holes meeting the requirements cannot be drilled, and the drill bit is easy to break; if the machining is performed on a high-precision drilling machine, the cost of drilling the bolt increases.
In addition, the rotation speed of a common drilling machine is low, the drilling capability provided during cutting is poor, burrs are easy to generate, and particularly, the outlet end of a drilling hole is particularly easy to turn up and accumulated burrs are easy to occur. Because the screw thread of the bolt is drilled, burrs are formed in complex areas formed between the screw thread and the hole, and the burrs are intersecting lines and have the height fluctuation of the wave crest and the wave trough of the screw thread, common polishing tools such as files, grinding wheels and the like cannot extend to the root of the screw thread to polish, and even if the burrs on the surface of the bolt capable of completing pin hole processing on a common drilling machine are more, the requirements of the bolt processing quality cannot be met.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a bolt thread drilling positioning device and a method.
The technical scheme for solving the technical problems is as follows: the bolt thread drilling positioning device comprises a base, a first vertical plate, a second vertical plate, a supporting mechanism, a positioning adjusting mechanism and a positioning locking mechanism, wherein the first vertical plate and the second vertical plate are arranged on the base;
the positioning adjusting mechanism comprises a positioning plate, a positioning sleeve and a pressing plate, wherein the positioning plate is arranged on the first vertical plate, a rotating positioning groove which is matched with the periphery of the positioning sleeve and used for accommodating the positioning sleeve is formed in the positioning plate, the positioning sleeve is in clearance fit with the rotating positioning groove, an internal thread matched with a bolt to be processed is arranged in the positioning sleeve, and the pressing plate is used for locking the positioning sleeve after being adjusted on the positioning plate.
The beneficial effects of the invention are as follows: the positioning sleeve is internally provided with an internal thread matched with the bolt to be processed, so that when the bolt to be processed is screwed into the positioning sleeve and the end part of the positioning sleeve is abutted against the positioning plate, the position relation between the drill bit and the thread of the bolt to be processed can be observed, then the positioning sleeve is rotated in the rotating positioning groove, the bolt to be processed rotates along with the rotating positioning groove until the thread trough of the bolt to be processed is observed to be aligned with the drill point position of the drill bit, the rotating positioning sleeve is stopped, the positioning sleeve is locked on the positioning plate through the pressing plate, the internal thread position of the positioning sleeve is fixed after the position of the positioning sleeve on the positioning plate is fixed, the screwing position of the bolt to be processed is fixed, the positioning sleeve has the characteristic that the screwing position of the bolt to be processed is the same every time, and the drill point of the drill bit can be drilled at the thread trough of the bolt to be processed after each positioning, so that the requirement that the thread trough of the bolt to be processed can be aligned with the drill point of the drill bit can be met. The positioning device is simple in structure and convenient to operate, the drill point of the drill bit is positioned in the middle of the trough of the threaded surface of the bolt when the drill is drilled on the drilling machine, the drill bit is uniformly stressed left and right, eccentric force is not generated, drilling resistance is effectively reduced, the drill bit can directly and easily drill into the threaded surface without a central drill, drilling on the threaded surface is realized, the drilling cost of the threaded surface is reduced, and the quality of the threaded drilling is guaranteed.
On the basis of the technical scheme, the invention can be improved as follows.
Furthermore, the locating plate is also provided with a drill plate, and the drill plate is provided with a drill hole for a drill to pass through.
The drill jig has the beneficial effects that the drill hole through which the drill passes is formed in the drill jig plate, the position of the drill is clear, when the positioning sleeve is adjusted, the debugging drill can be installed in the drill hole to observe whether the drill point of the debugging drill can be aligned with the thread trough of the bolt, and therefore, the positioning sleeve is more convenient and faster to adjust.
Further, the positioning sleeve is also provided with at least one rotation adjusting hole.
The technical scheme has the advantages that the bolt to be machined is in threaded fit with the internal thread of the locating sleeve to achieve connection of the bolt to be machined and the locating sleeve, the angle of the locating sleeve and the locating plate relative to the center of rotation can be adjusted through rotating the adjusting hole, the lead-in angle of the internal thread of the locating sleeve can be located at a fixed position, then the drill point of the drill bit can just correspond to the thread trough of the bolt to be machined when the bolt to be machined is drilled, and the locating sleeve is pressed on the locating plate through the pressing plate after being adjusted in place. The long rod can be inserted into the rotation adjustment hole in the adjustment process, and the positioning sleeve is rotated by the long rod, so that the positioning sleeve rotates around the rotation positioning groove of the positioning plate, and the adjustment operation is more convenient and quicker.
Further, a rod positioning groove for positioning the end face of the rod of the bolt to be processed is further formed in the positioning plate, the aperture of the rod positioning groove is smaller than that of the rotating positioning groove, and the rotating positioning groove and the rod positioning groove form a stepped groove.
The bolt to be processed is not only connected with the internal thread of the locating sleeve, but also the end face of the rod of the bolt to be processed is required to be abutted against the end face of the locating plate, so that the screw-in position of the thread of the bolt to be processed is guaranteed to be the same every time, and the contact position of the end face of the rod of the bolt to be processed and the locating plate is defined by the rod locating groove, so that the end face of the rod of the bolt to be processed is located through the rod locating groove.
Furthermore, the pressing plate is installed on the positioning plate through a fastening bolt, plate teeth acting on the positioning sleeve are arranged on the pressing plate, and U-shaped mounting grooves for positioning the fastening bolt are formed between adjacent plate teeth.
The beneficial effect of adopting above-mentioned further scheme is, can realize the removal and the dismouting of clamp plate under the condition of not dismouting fastening bolt, specifically only need not hard up fastening bolt, can inwards or outwards remove the clamp plate, even take down or put up the clamp plate, realize the clamp plate and compress tightly the adjustment of locating sleeve or loosen the locating sleeve, adopt this structure to need not dismouting fastening bolt, the removal and the installation of clamp plate are very convenient and fast, and the locating sleeve adjustment is more convenient.
Further, the positioning locking mechanism comprises a locking bolt and a locking nut, the locking nut is rotatably arranged on the second vertical plate, the locking nut is in threaded connection with the locking bolt, and the locking bolt is axially movably arranged on the second vertical plate through a limiting mechanism.
The locking bolt and the locking nut are in threaded connection, and the locking bolt can move in the axial direction under the constraint of the limiting mechanism when the bolt nut is rotated, so that the bolt to be machined is locked or loosened after machining is finished, and the stability of bolt drilling is guaranteed.
Further, the limiting mechanism comprises a guide groove and a locating pin, the guide groove is axially arranged on the surface of the locking bolt, the locating pin is in threaded connection with the second vertical plate, and the rod end of the locating pin acts on the guide groove.
The locking nut has the beneficial effects that the locating pin is in threaded connection with the second vertical plate, the rod end of the locating pin extends into the second vertical plate and is inserted into the guide groove, and the axial movement of the locking bolt is guided and limited, so that the locking bolt axially moves to lock or loosen a workpiece when the locking nut is rotated.
Further, the support mechanism includes at least one V-block disposed on the base.
The beneficial effect of adopting above-mentioned further scheme is, the accessible V type piece supports the location to the bottom of processing bolt, still has the effect of centering.
Further, the supporting mechanism further comprises an adjusting nut and a stop block, the bottom of the V-shaped block is provided with a connecting rod in threaded connection with the adjusting nut, the base is provided with a rod hole for accommodating the connecting rod, the stop block is connected with the base through an adjusting bolt, and the stop block is provided with a clamping groove for forming a rotating space of the adjusting nut and a limiting surface acting on the side face of the V-shaped block.
The supporting mechanism can be of a fixed structure, for example, only a V-shaped block is adopted, and the V-shaped block with proper height can be selected for supporting; the height-adjustable structure can be adopted, the height of the V-shaped block is adjusted by adopting the adjusting nut and the stop block, the adjusting nut can rotate in a rotating space formed by the clamping groove, and the limit surface of the stop block can restrict the side surface of the V-shaped block to prevent the V-shaped block from rotating; when the adjusting nut is rotated, the V-shaped block can move up and down, so that the bolt to be processed can be supported.
The invention also relates to a bolt thread drilling method, which adopts the bolt thread drilling positioning device, and installs the bolt thread drilling positioning device on a drilling machine, and comprises the following steps:
s1, adjusting the position of a positioning sleeve: the method comprises the steps of screwing the rod part of a debugging bolt into a positioning sleeve, screwing the rod part of the debugging bolt to the end face of the rod end of the debugging bolt, contacting the end face of a positioning plate, installing a debugging drill bit on a drill plate of the positioning plate, then rotating the positioning sleeve to enable the debugging bolt to rotate around a rotating positioning groove in the positioning plate, rotating the debugging bolt along with the positioning sleeve, observing that a thread trough of the debugging bolt is aligned with a drill point of the debugging drill bit, stopping rotating the positioning sleeve, positioning the adjusted positioning sleeve on the positioning plate through a pressing plate, and withdrawing the debugging bolt and the debugging drill bit;
s2, drilling: screwing the rod part of the bolt to be processed into the internal thread of the adjusted positioning sleeve, enabling the rod end surface of the bolt to be processed to contact the end surface of the positioning plate, enabling the positioning locking mechanism to act for locking the bolt to be processed, and enabling the supporting mechanism to support the bolt to be processed; a drill bit on the drilling machine penetrates through a drill bit hole on the drill plate, a drill point of the drill bit acts on a thread trough of a bolt to be processed to drill a hole, and after the hole is drilled, the bolt after the hole is drilled is taken down after the positioning and locking mechanism acts;
s3, repeating the step S2 until all the bolts to be processed are processed.
The beneficial effects of the invention are as follows: the debugging bolt is one of the bolts to be processed, the debugging drill bit is consistent with the drill bit on the drilling machine, the position of the positioning sleeve on the positioning plate can be adjusted according to the rotation of the debugging bolt, due to the rotation matching relation between the bolt to be processed and the internal threads of the positioning sleeve, after the positioning sleeve is fixed, the internal threads of the positioning sleeve are fixed in position, the positions of the threads of the bolt to be processed are the same, the positioning sleeve has the function of enabling the workpiece to be screwed into the threads of the bolt to be repeatedly positioned and consistent each time, and therefore the thread trough of the bolt to be processed is aligned with the drill point of the drill bit.
Further, the bolt after drilling is polished by a polishing pen, a polishing head of the polishing pen is of a T-shaped structure, and the thickness of the T-shaped structure is smaller than the width of the thread root of the bolt.
The T-shaped structure has the beneficial effects that the polishing head can completely contact the surface of the screw thread, so that burrs and flanging on the surface of the screw thread of the bolt after drilling can be removed, and the processing quality of the bolt is ensured.
Drawings
FIG. 1 is a schematic diagram of a front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view of FIG. 2 along the direction A-A;
FIG. 4 is a perspective view of the first angle of the present invention;
FIG. 5 is a schematic perspective view of the second angle of the present invention;
FIG. 6 is a schematic diagram of a split structure of the positioning adjustment mechanism of the present invention;
FIG. 7 is a schematic view showing the structure of the supporting mechanism and the stopper of the present invention in a mated state;
FIG. 8 is a schematic view of the structure of the drill bit aligned with the thread valleys;
FIG. 9 is a schematic perspective view of the alignment of the drill bit with the thread valleys;
in the figure, 1, a base; 2. a first vertical plate; 3. a second vertical plate; 4. a positioning plate; 41. rotating the positioning groove; 42. a rod positioning groove; 5. a positioning sleeve; 51. rotating the adjustment hole; 6. a pressing plate; 61. plate teeth; 62. a U-shaped mounting groove; 7. a fastening bolt; 8. a drill plate; 9. a locking bolt; 91. a guide groove; 10. a lock nut; 11. a positioning pin; 12. a V-shaped block; 13. an adjusting nut; 14. a stop block; 141. a clamping groove; 142. a limiting surface; 15. an adjusting bolt; 16. a rotating chamber; 17. a blocking cover; 18. a bolt to be processed; 19. a drill bit.
Detailed Description
The principles and features of the present invention are described below in connection with examples, which are set forth only to illustrate the present invention and not to limit the scope of the invention.
As shown in fig. 1-9, the bolt thread drilling positioning device comprises a base 1, and further comprises a first vertical plate 2, a second vertical plate 3, a supporting mechanism for supporting a bolt 18 to be processed, a positioning and adjusting mechanism arranged on the first vertical plate 2 and used for adjusting the thread position of the bolt 18 to be processed, and a positioning and locking mechanism arranged on the second vertical plate 3 and used for locking the bolt 18 to be processed, wherein the first vertical plate 2 and the second vertical plate 3 are arranged on the base 1;
the positioning adjusting mechanism comprises a positioning plate 4, a positioning sleeve 5 and a pressing plate 6, wherein the positioning plate 4 is arranged on the first vertical plate 2, a rotary positioning groove 41 which is matched with the periphery of the positioning sleeve 5 and used for accommodating the positioning sleeve 5 is arranged on the positioning plate 4, the positioning sleeve 5 is in clearance fit with the rotary positioning groove 41, an internal thread matched with a bolt 18 to be processed is arranged in the positioning sleeve 5, and the pressing plate 6 is used for locking the positioning sleeve 5 after adjustment on the positioning plate 4.
The locating plate 4 is also provided with a drill plate 8, and the drill plate 8 is provided with a drill hole for a drill 19 to pass through. The drill plate 8 is provided with a drill hole through which the drill 19 passes, the position of the drill 19 is clear, and when the positioning sleeve 5 is adjusted, the drill 19 can be arranged in the drill hole to observe whether the drill point of the drill 19 can be aligned with the thread trough of the bolt, so that the positioning sleeve 5 is more convenient and faster to adjust.
The positioning sleeve 5 is also provided with at least one rotation adjusting hole 51. The bolt 18 to be processed and the internal thread of the locating sleeve 5 are in threaded rotation fit to realize connection, the angle of the locating sleeve 5 and the locating plate 4 in the rotation center can be adjusted through rotating the adjusting hole 51, the leading-in angle of the internal thread of the locating sleeve 5 can be located at a fixed position, the drill point of the drill 19 can just correspond to the thread trough of the bolt 18 to be processed during drilling, and the locating sleeve 5 is pressed on the locating plate 4 by the pressing plate 6 after being adjusted in place. The long rod can be inserted into the rotation adjusting hole 51 in the adjusting process, so that the positioning sleeve 5 rotates around the rotation positioning groove 41 of the positioning plate 4, and the rotation adjusting operation of the positioning sleeve 5 by adopting the rotation adjusting hole 51 is more convenient and quick.
The positioning plate 4 is also provided with a rod positioning groove 42 for positioning the end face of the rod of the bolt 18 to be processed, the aperture of the rod positioning groove 42 is smaller than that of the rotary positioning groove 41, and the rotary positioning groove 41 and the rod positioning groove 42 form a stepped groove. The bolt 18 to be processed is not only connected with the internal thread of the positioning sleeve 5, but also the rod end face of the bolt 18 to be processed needs to be capable of being abutted against the end face of the positioning plate 4, so that the screw thread of the bolt 18 to be processed is guaranteed to be the same in each screwing position, the contact position between the rod end face of the bolt 18 to be processed and the positioning plate 4 is defined by the rod positioning groove 42, and the rod end face of the bolt 18 to be processed is positioned through the rod positioning groove 42.
The pressing plate 6 is mounted on the positioning plate 4 through a fastening bolt 7, plate teeth 61 acting on the positioning sleeve 5 are arranged on the pressing plate 6, and U-shaped mounting grooves 62 for positioning the fastening bolt 7 are formed between adjacent plate teeth 61. The clamp plate 6 can be moved and disassembled under the condition that the fastening bolt 7 is not disassembled and assembled, and the clamp plate 6 can be moved inwards or outwards by loosening the fastening bolt 7, even the clamp plate 6 is taken down or assembled, the clamp plate 6 is tightly pressed by the positioning sleeve 5 or the positioning sleeve 5 is loosened to adjust, the clamp plate 6 is not required to be disassembled and assembled by adopting the structure, the clamp plate 6 is taken down and assembled very conveniently and rapidly, and the positioning sleeve 5 is adjusted more conveniently.
The positioning and locking mechanism comprises a locking bolt 9 and a locking nut 10, the locking nut 10 is rotatably arranged on the second vertical plate 3, the locking nut 10 is in threaded connection with the locking bolt 9, and the locking bolt 9 is axially movably arranged on the second vertical plate 3 through a limiting mechanism. The locking bolt 9 is in threaded connection with the locking nut 10, and when the bolt nut is rotated, the locking bolt 9 can move in the axial direction under the constraint of the limiting mechanism, the bolt 18 to be processed is locked or loosened after the bolt 18 is processed, and the stability of bolt drilling is guaranteed.
The limiting mechanism comprises a guide groove 91 and a positioning pin 11, the guide groove 91 is axially arranged on the surface of the locking bolt 9, the positioning pin 11 is in threaded connection with the second vertical plate 3, and the rod end of the positioning pin acts on the guide groove 91. The positioning pin 11 is in threaded connection with the second vertical plate 3, and the rod end of the positioning pin extends into the second vertical plate 3 and is inserted into the guide groove 91, so that the axial movement of the locking bolt 9 is guided and limited, and the locking bolt 9 can axially move to lock or unlock a workpiece when the locking nut 10 is rotated.
The support mechanism comprises at least one V-block 12 arranged on the base 1. The bottom of the bolt 18 to be processed can be supported and positioned through the V-shaped block 12, and the centering effect is achieved.
The supporting mechanism further comprises an adjusting nut 13 and a stop block 14, a connecting rod in threaded connection with the adjusting nut 13 is arranged at the bottom of the V-shaped block 12, a rod hole for accommodating the connecting rod is formed in the base 1, the stop block 14 is connected with the base 1 through an adjusting bolt 15, and a clamping groove 141 for forming a rotating space of the adjusting nut 13 and a limiting surface 142 acting on the side surface of the V-shaped block 12 are formed in the stop block 14. The supporting mechanism can be of a fixed structure, for example, only the V-shaped block 12 is adopted, and the V-shaped block 12 with proper height can be selected for supporting; of course, the height-adjustable structure may be adopted, the height of the V-shaped block 12 is adjusted by adopting the adjusting nut 13 and the stop block 14, the adjusting nut 13 can rotate in the rotation space formed by the clamping groove 141, and the limit surface 142 of the stop block 14 can restrict the side surface of the V-shaped block 12 to prevent the V-shaped block 12 from rotating; when the adjusting nut 13 is rotated, the V-shaped block 12 can move up and down, so that the bolt 18 to be processed can be supported.
The second vertical plate 3 is provided with a rotating cavity 16 for accommodating the head of the lock nut 10, the second vertical plate 3 is provided with a blocking cover 17, and the blocking cover 17 is provided with an avoidance groove for the rod part of the lock nut 10 to pass through. The lock nut 10 can rotate through the rotating cavity 16, and when the lock nut 10 rotates, the lock bolt 9 can move in the axial direction, so that the bolt 18 to be processed is locked or the drilling hole is loosened.
The retaining cover 17 is installed on the second vertical plate 3 through a fastener, the head of the lock nut 10 is restrained in the rotating cavity 16 through the retaining cover 17, the lock nut 10 is more convenient to install and maintain in the rotating cavity 16, the rotation requirement of the lock nut 10 relative to the second vertical plate 3 is met, and meanwhile the lock nut 10 is prevented from being separated from the second vertical plate 3.
The first vertical plate 2 and the second vertical plate 3 are respectively arranged on the base 1 through connecting bolts. The connection between the first vertical plate 2 and the base 1 and the connection between the second vertical plate 3 and the base 1 are realized through connecting bolts.
The first vertical plate 2 is provided with a plate mounting groove for mounting the positioning plate 4. Positioning plate 4 is positioned on first riser 2 through the board mounting groove, realizes the connection of positioning plate 4 and first riser 2 through the fastener, location simple to operate is swift.
The invention also relates to a bolt thread drilling method, which adopts the bolt thread drilling positioning device, and installs the bolt thread drilling positioning device on a drilling machine, and comprises the following steps:
s1, adjusting the position of a positioning sleeve 5: the rod part of the debugging bolt is screwed into the positioning sleeve 5 and screwed until the end surface of the rod of the debugging bolt contacts the end surface of the positioning plate 4, a debugging drill bit is installed on the drill plate 8 of the positioning plate 4, then the positioning sleeve 5 is rotated to rotate around the rotating positioning groove 41 in the positioning plate 4, the debugging bolt rotates along with the positioning sleeve 5, the threaded trough of the debugging bolt is observed to be aligned with the drill point of the debugging drill bit, the positioning sleeve 5 stops rotating, the adjusted positioning sleeve 5 is positioned on the positioning plate 4 through the pressing plate 6, and the debugging bolt and the debugging drill bit are withdrawn;
s2, drilling: screwing the rod part of the bolt 18 to be processed into the internal thread of the adjusted positioning sleeve 5, enabling the rod end surface of the bolt 18 to be processed to contact the end surface of the positioning plate 4, enabling the positioning locking mechanism to act for locking the bolt 18 to be processed, and enabling the supporting mechanism to support the bolt 18 to be processed; a drill bit 19 on the drilling machine penetrates through a drill bit hole on the drill plate 8, the drill point of the drill bit 19 acts on a thread trough of a bolt 18 to be processed to drill a hole, and after the hole is drilled, the bolt after the hole is drilled is taken down after the positioning and locking mechanism acts;
s3, repeating the step S2 until all the bolts 18 to be processed are processed.
The bolt after drilling is polished by adopting a polishing pen, a polishing head of the polishing pen is of a T-shaped structure, and the thickness of the T-shaped structure is smaller than the width of the thread root of the bolt. The T-shaped structure enables the polishing head to be in full contact with the surface of the screw thread, and burrs and flanging on the surface of the screw thread of the bolt after drilling are removed, so that the processing quality of the bolt is guaranteed.
The positioning device can be directly used on drilling machines such as radial drilling machines and bench drills, the position of the positioning sleeve 5 is adjusted according to a bolt 18 to be drilled, specifically, one bolt is selected from the bolts 18 to be drilled to serve as an adjusting bolt, the adjusting bolt is screwed into the positioning sleeve 5, the end face of the adjusting bolt contacts the end face of the positioning plate 4, an adjusting drill bit is inserted into a drill bit hole of the drill plate 8, the adjusting drill bit is consistent with a drill bit 19 on the drilling machine, a long rod is inserted into a rotation adjusting hole 51 of the positioning sleeve 5, the positioning sleeve 5 is made to rotate in a rotation positioning groove 41 of the positioning plate 4, the position of a thread trough of the adjusting bolt is observed to be aligned with the drill point position of the adjusting drill bit, the fastening bolt 7 is screwed to fix the positioning sleeve 5 on the positioning plate 4 by using a pressing plate 6, then the adjusting bolt and the adjusting drill bit are withdrawn respectively, and the adjusted positioning sleeve 5 meets the function that the thread trough of the same bolt 18 to be machined can be aligned with the drill point of the drill bit 19; the bolt 18 to be processed can be screwed into the positioning sleeve 5 of the device, the end face of the bolt contacts the end face of the positioning plate 4, and a drill bit 19 on the drilling machine passes through a drill bit hole on the drill plate 8, and the drill point of the drill bit just corresponds to the thread trough of the bolt 18 to be processed; the lifting adjustment of the V-shaped block 12 can be realized by rotating the adjusting nut 13 for supporting the bolt 18 to be processed, so that the bolt 18 to be processed is supported; the positioning and locking mechanism specifically operates the rotary locking nut 10, the locking bolt 9 moves towards the direction of the bolt 18 to be processed to clamp the bolt 18 to be processed, and the drilling processing can be carried out on the threads of the bolt 18 to be processed through the drill bit 19; after the drilling is completed, the locking nut 10 is reversely rotated, and the locking bolt 9 moves in a direction away from the bolt, so that the drilled bolt can be taken down; the bolt after drilling can also use the polishing pen to utilize the T-shaped polishing head to remove burrs and flanging on the threaded surface after drilling, so that the drilling quality of the bolt is ensured. The positioning device realizes that the bolt is used for drilling the threaded surface on the drilling machine, the bolt is fast and convenient to assemble and disassemble in the machining process, the drill point of the drill bit 19 is positioned in the middle position of the trough of the threaded surface of the bolt 18 to be machined when the bolt is drilled after the positioning sleeve 5 is adjusted, so that the left and right stress of the drill bit 19 is uniform, eccentric force is not generated, drilling resistance is effectively reduced, the threaded surface can be directly and easily drilled without a central drill, the drilling on the threaded surface is realized, the drilling cost of the threaded surface is reduced, and the quality of the threaded drilling is ensured.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (7)

1. The bolt thread drilling positioning device comprises a base and is characterized by further comprising a first vertical plate (2) and a second vertical plate (3) which are arranged on the base (1), a supporting mechanism for supporting a bolt (18) to be processed, a positioning and adjusting mechanism arranged on the first vertical plate (2) and used for adjusting the thread position of the bolt (18) to be processed, and a positioning and locking mechanism arranged on the second vertical plate (3) and used for locking the bolt (18) to be processed;
the positioning adjusting mechanism comprises a positioning plate (4), a positioning sleeve (5) and a pressing plate (6), wherein the positioning plate (4) is arranged on the first vertical plate (2), a rotating positioning groove (41) for accommodating the positioning sleeve (5) is formed in the positioning plate (4), the positioning sleeve (5) is in clearance fit with the rotating positioning groove (41), an internal thread matched with a bolt (18) to be processed is formed in the positioning sleeve (5), and the pressing plate (6) is used for locking the positioning sleeve (5) after adjustment on the positioning plate (4);
the positioning plate (4) is also provided with a drill plate (8), and the drill plate (8) is provided with a drill hole for a drill bit (19) to pass through; at least one rotation adjusting hole (51) is also arranged on the positioning sleeve (5);
the positioning plate (4) is also provided with a rod positioning groove (42) for positioning the end face of the bolt (18) to be processed, the aperture of the rod positioning groove (42) is smaller than that of the rotary positioning groove (41), and the rotary positioning groove (41) and the rod positioning groove (42) form a stepped groove;
the clamp plate (6) is installed through fastening bolt (7) on locating plate (4), be equipped with on clamp plate (6) and act on tooth (61) of spacer sleeve (5), adjacent tooth (61) are equipped with between be used for location U type mounting groove (62) of fastening bolt (7).
2. The bolt thread drilling positioning device according to claim 1, wherein the positioning and locking mechanism comprises a locking bolt (9) and a locking nut (10), the locking nut (10) is rotatably arranged on the second vertical plate (3), the locking nut (10) is in threaded connection with the locking bolt (9), and the locking bolt (9) is axially movably arranged on the second vertical plate (3) through a limiting mechanism.
3. Bolt thread drilling positioning device according to claim 2, characterized in that the limiting means comprise a guide groove (91) and a positioning pin (11), the guide groove (91) being axially arranged on the surface of the locking bolt (9), the positioning pin (11) being in threaded connection with the second riser (3) and the rod end of the positioning pin acting on the guide groove (91).
4. Bolt thread drilling positioning device according to claim 1, characterized in that the support means comprise at least one V-shaped block (12) provided on the base (1).
5. The bolt thread drilling positioning device according to claim 4, wherein the supporting mechanism further comprises an adjusting nut (13) and a stop block (14), a connecting rod in threaded connection with the adjusting nut (13) is arranged at the bottom of the V-shaped block (12), a rod hole for accommodating the connecting rod is formed in the base (1), the stop block (14) is connected with the base (1) through an adjusting bolt (15), and a clamping groove (141) for forming a rotating space of the adjusting nut (13) and a limiting surface (142) acting on the V-shaped block (12) are formed in the stop block (14).
6. A method of drilling a bolt thread, characterized in that the bolt thread drilling positioning device according to any one of claims 1-5 is used for mounting the bolt thread drilling positioning device to a drilling machine, comprising the steps of:
s1, adjusting the position of a positioning sleeve (5): the method comprises the steps of screwing the rod part of a debugging bolt into a positioning sleeve (5) until the end face of the rod part of the debugging bolt contacts the end face of a positioning plate (4), installing a debugging drill bit on a drill plate (8) of the positioning plate (4), rotating the positioning sleeve (5) to enable the debugging drill bit to rotate around a rotating positioning groove (41) in the positioning plate (4), rotating the debugging bolt along with the rotating positioning sleeve, observing that a thread trough of the debugging bolt is aligned with the drill point of the debugging drill bit, stopping rotating the positioning sleeve (5), positioning the adjusted positioning sleeve (5) on the positioning plate (4) through a pressing plate (6), and withdrawing the debugging bolt and the debugging drill bit;
s2, drilling: screwing the rod part of the bolt (18) to be processed into the internal thread of the adjusted positioning sleeve (5), enabling the rod end surface of the bolt (18) to be processed to contact the end surface of the positioning plate (4), and enabling the positioning locking mechanism to act to lock the bolt (18) to be processed, wherein the supporting mechanism supports the bolt (18) to be processed; a drill bit (19) on the drilling machine penetrates through a drill bit hole on the drill plate (8), a drill point of the drill bit (19) acts on a thread trough of a bolt (18) to be processed to drill a hole, and after the hole is drilled, the bolt after the hole is drilled is taken down after the positioning and locking mechanism acts;
s3, repeating the step S2 until all the bolts (18) to be processed are processed.
7. The method for drilling screw threads on a bolt according to claim 6, wherein the bolt after the drilling is finished is polished by a polishing pen, a polishing head of the polishing pen is of a T-shaped structure, and the thickness of the T-shaped structure is smaller than the width of the thread root of the bolt.
CN202410152939.3A 2024-02-04 2024-02-04 Bolt thread drilling positioning device and method Active CN117696969B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128792A1 (en) * 1991-08-27 1993-03-04 Matec Maschinenbau Und Automat Positioning element for workpieces - has axial and radial bores with screws for fixing on workpiece supports.
JPH0639454A (en) * 1992-07-22 1994-02-15 Musashi Seimitsu Ind Co Ltd Method for forming split pin hole of bolt and others
CN204747599U (en) * 2015-07-07 2015-11-11 贵州航太精密制造有限公司 Bolt the threaded portion drilling equipment
KR20160131293A (en) * 2015-05-06 2016-11-16 조희근 a drilling apparatus for bolt
EP3170601A1 (en) * 2015-11-19 2017-05-24 LMT Fette Werkzeugtechnik GmbH & Co. KG Thread former or tap and method for producing a thread former or tap
KR20220144161A (en) * 2021-04-19 2022-10-26 부산가톨릭대학교 산학협력단 Drilling method for bolts
CN218694191U (en) * 2022-10-20 2023-03-24 江西昌河航空工业有限公司 Drilling tool for threaded surface of bolt

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128792A1 (en) * 1991-08-27 1993-03-04 Matec Maschinenbau Und Automat Positioning element for workpieces - has axial and radial bores with screws for fixing on workpiece supports.
JPH0639454A (en) * 1992-07-22 1994-02-15 Musashi Seimitsu Ind Co Ltd Method for forming split pin hole of bolt and others
KR20160131293A (en) * 2015-05-06 2016-11-16 조희근 a drilling apparatus for bolt
CN204747599U (en) * 2015-07-07 2015-11-11 贵州航太精密制造有限公司 Bolt the threaded portion drilling equipment
EP3170601A1 (en) * 2015-11-19 2017-05-24 LMT Fette Werkzeugtechnik GmbH & Co. KG Thread former or tap and method for producing a thread former or tap
KR20220144161A (en) * 2021-04-19 2022-10-26 부산가톨릭대학교 산학협력단 Drilling method for bolts
CN218694191U (en) * 2022-10-20 2023-03-24 江西昌河航空工业有限公司 Drilling tool for threaded surface of bolt

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