Deep-hole radial screw hole machining method, machining drilling tool and using method of deep-hole radial screw hole machining drilling tool

Abstract

The invention discloses a deep hole radial screw hole machining method, a deep hole radial screw hole machining drilling tool and a using method of the deep hole radial screw hole machining drilling tool. The deep hole radial screw hole machining method comprises the steps that (1) a drilling jig is designed and installed in a deep hole; (2) a linear sliding rail is designed, the linear sliding rail comprises a sliding rail track and a sliding block, and the sliding rail track is fixedly connected with the drill jig; (3) a power mechanism capable of driving the cutter to move and rotate in the radial direction is designed, and the power mechanism is installed on the sliding block; (4) the power mechanism is moved along the sliding rail till the cutter is aligned with the position of the radial screw hole to be machined in the hole wall of the deep hole; (5) the power mechanism is started, and the power mechanism drives the cutter to move in the radial direction and rotate to drill the radial screw hole in the hole wall of the deep hole in the corresponding position; according to the deep-hole radial screw hole machining method, through the method that the drill jig, the linear sliding rail and the semi-automatic drilling tool are combined, the problem that the deep-hole radial screw hole cannot be machined through existing numerical control equipment and a right-angle milling head is solved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a deep-hole radial screw hole processing method, a processing drill and a use method thereof. Background Art

[0002] The slurry diaphragm pump is a device used to transport slurry containing solid particles. It is widely used in mining, chemical, building materials and other industries.

[0003] On large-scale slurry diaphragm pumps, due to the huge value of the machine base, the machine base is designed as a detachable structure with multiple deep holes and cylinder liners for economical and convenient maintenance. By opening multiple groups of radial screw holes on the hole walls of the deep holes, the cylinder liners are fixed in the deep holes using the radial screw holes. By designing the easily damaged cylinder liners as a detachable structure, the purpose of greatly reducing maintenance costs is achieved.

[0004] Due to its large size, the large-scale slurry diaphragm pump has a deep hole diameter of ≥φ300mm, a depth of ≥2000mm, and an aspect ratio of ≥7:1. Figure 1 As shown in the figure, multiple groups of radial screw holes are designed at different radial angles on the wall of the deep hole to fasten the cylinder sleeve in the deep hole. At the same time, positioning pin holes are opened on the wall of the deep hole. At present, the processing of radial screw holes in deep holes has always been achieved by manual drilling, as shown in the attached figure. Figure 2 As shown in the figure, most screw holes are processed by handheld pistol drills or magnetic magnetic drills. However, pistol drill (or magnetic drill) processing requires people to enter the deep hole to complete. This processing method is not only inefficient, but also has extremely high labor intensity and extremely harsh working environment, which is not conducive to occupational health and safety. And when the aperture of the deep hole is small to a certain extent, people cannot enter the deep hole, and radial screw holes cannot be processed manually. With the development of automated processing technology, manual work can be replaced by CNC or automation; however, conventional CNC equipment or right-angle milling heads cannot realize the processing of radial screw holes due to the hole depth. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a deep hole radial screw hole processing method and processing drill tool to avoid the problem that the existing CNC machine tools and right-angle milling heads are unable to handle the radial screw hole processing in deep holes, and to replace manual processing to achieve the effect of improving quality and increasing efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A deep hole radial screw hole processing method, comprising the following steps: Step 1) Design a drilling jig according to the size of the deep hole and the distribution positions of the radial screw holes and the limit pin holes on the hole wall of the deep hole, and install the drilling jig in the deep hole; Step 2) Design a linear slide rail, which includes a slide rail and a slider. The slide rail and the drilling jig are fixedly connected, and the slider moves freely along the slide rail. Step 3) Design a power mechanism that can drive the tool to move radially and rotate, and install the power mechanism on the slider so that the slider can drive the power mechanism and the tool to move along the slide rail; Step 4) moving the power mechanism along the slide rail until the tool is aligned with the radial screw hole to be processed on the wall of the deep hole; Step 5) starting the power mechanism, which drives the tool to move radially and rotate to drill radial screw holes on the hole wall of the deep hole at the corresponding position; Step 6) The power mechanism drives the tool to exit; Step 7) Check whether all radial screw holes in this direction have been processed. If not, return to step 4). If yes, go to step 8); Step 8) Check whether all radial screw holes on the wall of the deep hole have been processed. If yes, proceed to step 10). If not, proceed to step 9); Step 9) Remove the slide rail from the drilling jig, then rotate the slide rail along the axis of the deep hole by a set angle until it corresponds to the position of the radial screw hole to be processed at the next angle, and then re-fix it with the drilling jig, and then return to step 4); Step 10) Remove the drilling jig and slide rails to complete the processing of the radial screw holes on the wall of the deep hole.

[0007] Preferably, in step 1), a drill sleeve is provided at a position on the drill jig corresponding to the radial screw hole, a drill sleeve hole is formed on the drill sleeve, and a limit pin is provided at a position on the drill jig corresponding to the limit pin hole.

[0008] Preferably, in step 1), the drill jig is hoisted into the deep hole using a crane, the position of the drill jig is adjusted axially and circumferentially until the limit pin is inserted into the limit pin hole, and then each drill sleeve is respectively installed into the drill sleeve hole of the drill jig.

[0009] Preferably, in step 1), an adhesive is applied to the outer circle of the drill sleeve positioning so as to bond the drill sleeve to the drill sleeve hole at the corresponding position; In step 9), the drill sleeve is removed from the drill sleeve hole, and adhesive is reapplied and bonded to the drill sleeve hole to be processed at the next angle.

[0010] Preferably, in step 2), a plurality of positioning holes are provided on the slide rail, the slide rail is installed on the drill sleeve at the corresponding position through each positioning hole, and the slide rail and the drill template are connected by fasteners, and then the slider is installed on the slide rail, and the slider is slid to the hole mouth position of the deep hole.

[0011] A processing drill for realizing the above-mentioned deep hole radial screw hole processing method comprises a linear slide rail, a power mechanism and a tool; the linear slide rail comprises a slide rail track and a slider that can move freely along the slide rail track, the power mechanism is installed on the slider, and the tool is installed on the power mechanism; The power mechanism includes a radial movement component and a rotational movement component. The radial movement component is installed on the slider, and the rotational movement component is installed on the radial movement component so that the radial movement component can drive the rotational movement component to move radially. The tool is installed on the rotational movement component so that the rotational movement component drives the tool to rotate.

[0012] Preferably, the slider is provided with a slider connecting block, and the radial movement assembly includes a two-way hydraulic cylinder, a cylinder seat and a pressure plate, the two-way hydraulic cylinder and the pressure plate are fixed on the cylinder seat, and the cylinder seat is fixed on the slider connecting block, and a linear rail seat is also fixedly connected to the pressure plate and the slider connecting block, and a linear rail is installed on the linear rail seat, and a connecting frame is also provided on the plunger of the two-way hydraulic cylinder, and a connecting plate is provided on the connecting frame, and the other end of the connecting plate connected to the connecting frame is fixedly connected to the rotary motion assembly, and the rotary motion assembly is slidably connected to the linear rail through a linear rail slider, so that the two-way hydraulic cylinder drives the rotary motion assembly to reciprocate radially along the linear rail through the plunger, the connecting frame and the connecting plate.

[0013] Preferably, the rotary motion component includes a motor and a reducer, the output shaft of the motor is connected to the input shaft of the reducer through gears to reduce the rotational motion of the motor, increase the torque and convert it into radial rotational motion, and the tool is connected to the output shaft of the reducer to drive the tool to rotate through the reducer.

[0014] A method for using the above-mentioned processing drill tool comprises the following steps: Step S1) The slide rail is fixedly connected to the drilling jig, and the slider is installed on the slide rail and can move freely along the slide rail; Step S2) fix the cylinder seat on the slider connection block, fix the bidirectional hydraulic cylinder and the pressure plate on the cylinder seat, fix the linear rail seat on the slider connection block and the cylinder seat, fix the linear rail on the linear rail seat, and fix the connecting frame to the connecting plate; install the tool on the output shaft of the reducer, then fix the rotating motion component as a whole to the connecting plate, slide the linear rail slider to the linear rail, and fix the connecting frame to the plunger of the bidirectional hydraulic cylinder; Step S3) moving the slider to the opening of the deep hole, and then installing the components assembled in step S2) on the slider as a whole through the slider connecting block; Step S4) Move the slider along the slide rail until the tool is aligned with the radial screw hole to be processed on the wall of the deep hole; turn on the motor, the motor rotates and drives the tool to rotate through the reducer, open the control valve switch of the two-way hydraulic cylinder, so that the plunger moves downward, driving the tool to move downward synchronously, and the tool drills the radial screw hole at the corresponding position. After the drilling is completed, the control valve switch of the two-way hydraulic cylinder is reversed, so that the plunger moves upward, driving the tool to move upward synchronously, and the tool exits; Step S5) Check whether all radial screw holes in the direction have been processed. If not, return to step S4. If yes, go to step S6); Step S6) Whether all radial screw holes on the wall of the deep hole have been processed, if yes, proceed to step S8); if not, proceed to step S7); Step S8) remove the slide rail from the drilling jig, then rotate the slide rail along the axis of the deep hole by a set angle until it corresponds to the position of the radial screw hole to be processed at the next angle, and then re-fix it with the drilling jig, and then return to step S4); Step S8) disassemble the slide rail and complete the processing of the radial screw hole on the hole wall of the deep hole.

[0015] Preferably, the tool comprises a twist drill and a tap, and step S4) comprises a drilling step S4.1) and a tapping step S4.2); Step S4.1) Install the twist drill, and then move the slider along the slide rail until the twist drill is aligned with the radial screw hole to be processed on the wall of the deep hole; turn on the motor, the motor rotates and drives the twist drill to rotate through the reducer, turn on the control valve switch of the two-way hydraulic cylinder, so that the plunger moves downward, driving the twist drill to move downward synchronously, and the twist drill drills the radial screw hole at the corresponding position. After the drilling is completed, the control valve switch of the two-way hydraulic cylinder is reversed, so that the plunger moves upward, driving the twist drill to move upward synchronously, and the twist drill exits; Step S4.2) Move the drill tool to the mouth of the deep hole, remove the twist drill and replace it with a tap, then move the slider along the slide rail until the tap is aligned with the radial screw hole to be processed on the wall of the deep hole; turn on the motor, the motor rotates and drives the tap to rotate through the reducer, turn on the control valve switch of the two-way hydraulic cylinder, so that the plunger moves downward, driving the tap to move downward synchronously, and the tap taps the corresponding position. After the tapping is completed, the control valve switch of the two-way hydraulic cylinder is reversed, so that the plunger moves upward, driving the tap to move upward synchronously, and the tap exits.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The deep-hole radial screw hole processing method of the present invention solves the problem that the existing CNC equipment and right-angle milling head cannot process deep-hole radial screw holes by combining a drilling jig, a linear slide rail and a semi-automatic drilling tool.

[0017] 2. The deep-hole radial screw hole processing method of the present invention realizes the semi-automatic processing of deep-hole radial screw holes instead of manual processing, greatly improves the efficiency, and greatly improves the working environment.

[0018] 3. The deep-hole radial screw hole processing method of the present invention can also be applied to the processing of radial screw holes in other similar internal cavities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a deep hole; Figure 2 It is a demonstration diagram of the manual processing method in the prior art; Figure 3 It is a structural schematic diagram of a drill sleeve in a deep hole radial screw hole processing method of the present invention; Figure 4 It is a schematic diagram of the structure of the linear guide rail in the deep hole radial screw hole processing method of the present invention; Figure 5 This is a schematic diagram of the structure of the connection between the drilling tool and the drill sleeve of the present invention; Figure 6 A structural schematic diagram of another perspective of the connection between the drilling tool and the drill sleeve of the present invention; Figure 7 This is a schematic diagram of the structure of the drilling tool of the present invention when used; Figure 8 This is a schematic diagram of the scene when the drilling tool of the present invention is used.

[0020] Explanation of the accompanying drawings: deep hole 1, limit pin hole 2, radial screw hole 3, drill jig 4, drill sleeve 5, slide rail 6, slider 7, slider connecting block 8, cylinder seat 9, bidirectional hydraulic cylinder 10, plunger 11, connecting frame 12, connecting plate 13, pressure plate 14, linear rail 15, motor 16, reducer 17, tool 18, linear rail slider 19. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meaning understood by people with general skills in the field to which the present invention belongs.

[0022] The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "a", "an" or "the" and other similar words do not indicate a quantitative limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" cover the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] In this specific embodiment, as shown in the attached Figure 1 As shown, the deep hole diameter is φ420H8, the deep hole depth is 1820, the limit pin hole diameter is φ15, and the radial screw hole is M16×1.6-6H.

[0024] The present invention provides a deep hole radial screw hole processing method, which specifically comprises the following steps: Step 1) Design a drilling jig 4 according to the size of the deep hole 1 and the distribution positions of the radial screw holes 3 and the limit pin holes 2 on the hole wall of the deep hole 1, and install the drilling jig 4 in the deep hole 1.

[0025] Specifically, the drilling template structure is as shown in the attached Figure 3 As shown; the outer diameter of the drill jig 4 and the hole diameter of the deep hole 1 are clearance fit, and the design size is φ420f8. A drill sleeve 5 is provided at a position corresponding to the radial screw hole 3 on the drill jig 4, and a drill sleeve hole is opened on the drill sleeve 5. The drill sleeve hole of the drill jig 4 and the drill sleeve 5 are clearance fit, and the design size is φ30F7 / φ30g6. When used specifically, an adhesive is applied to the positioning outer circle of the drill sleeve 5 to bond the drill sleeve 5 to the drill sleeve hole at the corresponding position; a limit pin is provided at a position corresponding to the limit pin hole 2 on the drill jig 4, and the limit pin hole 2 and the limit pin are clearance fit, and the design size is φ15F7. The surface of the drill sleeve 5 is hardened to increase the wear resistance; the axial position size of the drill sleeve hole and the limit pin hole 2 is consistent with the position of each radial screw hole 3 in the deep hole 1.

[0026] When installing the drill jig 4, use a crane to lift the drill jig 4 into the deep hole 1, adjust the position of the drill jig 4 axially and circumferentially until the limit pin is inserted into the limit pin hole 2, and then install each drill sleeve 5 into the drill sleeve hole of the drill jig 4 respectively, and the installation of the drill jig 4 is completed.

[0027] Step 2) Design the linear guide rail, as shown in the attached Figure 4As shown, the linear slide rail includes a slide rail track 6 and a slider 7, the slide rail track 6 and the drill jig 4 are fixedly connected, and the slider 7 moves freely along the slide rail track 6; a plurality of positioning holes are provided on the slide rail track 6, the slide rail track 6 is installed on the drill sleeve 5 at the corresponding position through each positioning hole, and the slide rail track 6 and the drill jig 4 are connected by fasteners (such as screws), the positioning holes of the slide rail track 6 and the positioning outer diameters of the drill sleeve 5 are clearance fit, and the design size is φ45F7 / φ45e8, the slide rail track 6 is indirectly positioned on the drill jig 4 through the positioning holes and the drill sleeve 5, and then the slider 7 is installed on the slide rail track 6, and the slider 7 is slid to the hole mouth position of the deep hole 1.

[0028] Step 3) Design a power mechanism that can drive the tool to move radially and rotate, and install the power mechanism on the slider 7 so that the slider 7 can drive the power mechanism and the tool to move along the slide rail 6; Step 4) moving the power mechanism along the slide rail 6 until the tool is aligned with the radial screw hole 3 to be processed on the wall of the deep hole 1; Step 5) starting the power mechanism, which drives the tool to move radially and rotate to drill radial screw holes 3 on the hole wall of the deep hole 1 at the corresponding position; Step 6) The power mechanism drives the tool to exit; Step 7) Check whether all radial screw holes 3 in the direction have been processed. If not, return to step 4. If yes, go to step 8); Step 8) Check whether all radial screw holes 3 on the wall of deep hole 1 have been processed. If yes, proceed to step 10). If not, proceed to step 9); Step 9) Remove the slide rail 6 from the drilling jig 4, then rotate the slide rail 6 along the axis of the deep hole 1 to a set angle until it corresponds to the position of the radial screw hole 3 to be processed at the next angle, and then re-fix it with the drilling jig 4, remove the drill sleeve 5 from the drill sleeve hole, re-apply adhesive and bond it to the drill sleeve hole to be processed at the next angle, and then return to step 4); Step 10) Disassemble the drilling jig 4 and the slide rail 6 to complete the processing of the radial screw hole 3 on the hole wall of the deep hole 1.

[0029] In this embodiment, a processing drill tool is also provided to implement the above-mentioned deep hole radial screw hole processing method, as shown in the attached Figure 5 and attached Figure 6 As shown, it includes a linear slide rail, a power mechanism and a tool 18; the linear slide rail includes a slide rail track 6 and a slider 7 that can move freely along the slide rail track 6, the power mechanism is installed on the slider 7, and the tool 18 is installed on the power mechanism; The power mechanism includes a radial movement component and a rotational movement component. The radial movement component is installed on the slider 7, and the rotational movement component is installed on the radial movement component so that the radial movement component can drive the rotational movement component to move radially. The tool 18 is installed on the rotational movement component so that the rotational movement component drives the tool 18 to rotate.

[0030] In this specific embodiment, a slider connecting block 8 is provided on the slider 7, and the radial movement component includes a bidirectional hydraulic cylinder 10, a cylinder seat 9 and a pressure plate 14. The bidirectional hydraulic cylinder 10 and the pressure plate 14 are fixed on the cylinder seat 9, and the cylinder seat 9 is fixed on the slider connecting block 8. A linear rail seat is also fixedly connected to the pressure plate 14 and the slider connecting block 8, and a linear rail seat is installed on the linear rail seat. A connecting frame 12 is also provided on the plunger 11 of the bidirectional hydraulic cylinder 10, and a connecting plate 13 is provided on the connecting frame 12. The other end of the connecting plate 13 connected to the connecting frame 12 is fixedly connected to the rotary motion component, and the rotary motion component is slidably connected to the linear rail 15 through the linear rail slider 19, so that the bidirectional hydraulic cylinder 10 drives the rotary motion component to move radially back and forth along the linear rail 15 through the plunger 11, the connecting frame 12 and the connecting plate 13.

[0031] In this specific embodiment, the rotary motion component includes a motor 16 and a reducer 17. The output shaft of the motor 16 is connected to the input shaft of the reducer 17 through gears to reduce the torque of the rotary motion of the motor 16 and convert it into radial rotary motion. The tool 18 is connected to the output shaft of the reducer 17 to drive the tool 18 to rotate through the reducer 17.

[0032] In this embodiment, a method for using the above-mentioned processing drill tool is also provided. Figure 7 As shown, the following steps are included: Step S1) The slide rail 6 is fixedly connected to the drilling jig 4, and the slider 7 is installed on the slide rail 6 and can move freely along the slide rail 6; Step S2) fix the cylinder seat 9 on the slider connection block 8, fix the bidirectional hydraulic cylinder 10 and the pressure plate 14 on the cylinder seat 9, fix the linear rail seat on the slider connection block 8 and the cylinder seat 9, fix the linear rail 15 on the linear rail seat, and fix the connecting frame 12 to the connecting plate 13; install the tool 18 on the output shaft of the reducer 17, then fix the rotating motion component as a whole to the connecting plate 13, slide the linear rail slider 19 to the linear rail 15, and fix the connecting frame 12 to the plunger 11 of the bidirectional hydraulic cylinder 10; Step S3) Move the slider 7 to the opening of the deep hole 1, and then install the components assembled in step S2) on the slider 7 by screws through the slider connecting block 8; adjust the position of the plunger 11 of the two-way hydraulic cylinder 10 so that the tool 18 does not collide during the axial movement of the drilling tool; Step S4) Move the slider 7 along the slide rail 6 until the tool 18 is aligned with the radial screw hole 3 to be processed on the wall of the deep hole 1; during the specific operation, use an endoscope (or other observation methods) to observe the drill tool deviation, axially fine-tune the drill tool position until the tool 18 is aligned with the drill sleeve hole, then turn on the motor 16, adjust the motor 16 to a suitable speed, the motor 16 rotates and drives the tool 18 to rotate through the reducer 17, open the control valve switch of the two-way hydraulic cylinder 10, so that the plunger 11 moves downward, driving the tool 18 to move downward synchronously, and the tool 18 drills the radial screw hole 3 at the corresponding position. After the drilling is completed, the control valve switch of the two-way hydraulic cylinder 10 is reversed, so that the plunger 11 moves upward, driving the tool 18 to move upward synchronously, and the tool 18 exits; Step S5) Check whether all radial screw holes 3 in the direction have been processed. If not, return to step S4. If yes, go to step S6); Step S6) Whether all radial screw holes 3 on the hole wall of the deep hole 1 have been processed, if yes, proceed to step S8); if not, proceed to step S7); Step S8) remove the slide rail 6 from the drilling jig 4, then rotate the slide rail 6 along the axis of the deep hole 1 by a set angle until it corresponds to the position of the radial screw hole 3 to be processed at the next angle, and then re-fix it with the drilling jig 4, and then return to step S4); Step S8) disassemble the slide rail and complete the processing of the radial screw hole 3 on the 360-degree angle of the circumference of the deep hole 1.

[0033] In this specific embodiment, according to the processing requirements of the radial screw hole 3, the tool 18 includes a twist drill and a tap, and step S4) includes a drilling step S4.1) and a tapping step S4.2); Step S4.1) Install the twist drill, and then move the slider 7 along the slide rail 6 until the twist drill is aligned with the radial screw hole 3 to be processed on the wall of the deep hole 1; turn on the motor 16, the motor 16 rotates and drives the twist drill to rotate through the reducer 17, and the control valve switch of the two-way hydraulic cylinder 10 is turned on, so that the plunger 11 moves downward, driving the twist drill to move downward synchronously, and the twist drill drills the radial screw hole 3 at the corresponding position. After the drilling is completed, the control valve switch of the two-way hydraulic cylinder 10 is reversed, so that the plunger 11 moves upward, driving the twist drill to move upward synchronously, and the twist drill exits; Step S4.2) Move the drill tool to the mouth of the deep hole 1, remove the twist drill and replace it with a tap, then move the slider 7 along the slide rail 6 until the tap is aligned with the radial screw hole 3 to be processed on the wall of the deep hole 1; turn on the motor 16, the motor 16 rotates and drives the tap to rotate through the reducer 17, turn on the control valve switch of the two-way hydraulic cylinder 10, so that the plunger 11 moves downward, driving the tap to move downward synchronously, and the tap taps the corresponding position. After the tapping is completed, the control valve switch of the two-way hydraulic cylinder 10 is reversed, so that the plunger 11 moves upward, driving the tap to move upward synchronously, and the tap exits.

[0034] Compared with the prior art, the deep hole radial screw hole processing method of the present invention is as follows Figure 8 The figure shows the on-site use state diagram. By combining the drilling jig, linear slide rail and semi-automatic drilling tool, the problem that the existing CNC equipment and right-angle milling head cannot process deep-hole radial screw holes is solved. The deep-hole radial screw hole processing method of the present invention realizes the semi-automatic processing of deep-hole radial screw holes instead of manual processing, greatly improves the efficiency, and greatly improves the working environment. The deep-hole radial screw hole processing method of the present invention can also be applied to the processing of radial screw holes in other similar internal chambers.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A method for machining deep radial screw holes, characterized in that: The following steps are involved: Step 1) Design a drilling jig according to the size of the deep hole and the distribution positions of the radial screw holes and the limit pin holes on the hole wall of the deep hole, and install the drilling jig in the deep hole; Step 2) Design a linear slide rail, which includes a slide rail and a slider. The slide rail and the drilling jig are fixedly connected, and the slider moves freely along the slide rail; Step 3) Design a power mechanism that can drive the tool to move radially and rotate, and install the power mechanism on the slider so that the slider can drive the power mechanism and the tool to move along the slide rail; Step 4) moving the power mechanism along the slide rail until the tool is aligned with the radial screw hole to be processed on the wall of the deep hole; Step 5) starting the power mechanism, which drives the tool to move radially and rotate to drill radial screw holes on the hole wall of the deep hole at the corresponding position; Step 6) The power mechanism drives the tool to exit; Step 7) Check whether all radial screw holes in this direction have been processed. If not, return to step 4). If yes, go to step 8); Step 8) Check whether all radial screw holes on the wall of the deep hole have been processed. If yes, proceed to step 10). If not, proceed to step 9); Step 9) Remove the slide rail from the drilling jig, then rotate the slide rail along the axis of the deep hole by a set angle until it corresponds to the position of the radial screw hole to be processed at the next angle, and then re-fix it with the drilling jig, and then return to step 4); Step 10) Remove the drilling jig and slide rails to complete the processing of the radial screw holes on the wall of the deep hole.

2. The deep hole radial screw hole processing method according to claim 1, characterized in that: In step 1), a drill sleeve is provided at a position on the drill jig corresponding to the radial screw hole, a drill sleeve hole is opened on the drill sleeve, and a limit pin is provided at a position on the drill jig corresponding to the limit pin hole.

3. The deep hole radial screw hole processing method according to claim 2, characterized in that: In step 1), the drill jig is hoisted into the deep hole using a crane, and the position of the drill jig is adjusted axially and circumferentially until the limit pin is inserted into the limit pin hole, and then each drill sleeve is respectively installed into the drill sleeve hole of the drill jig.

4. The deep hole radial screw hole processing method according to claim 3, characterized in that: In step 1), an adhesive is applied to the outer circle of the drill sleeve so as to bond the drill sleeve to the drill sleeve hole at the corresponding position; In step 9), the drill sleeve is removed from the drill sleeve hole, and adhesive is reapplied and bonded to the drill sleeve hole to be processed at the next angle.

5. The deep hole radial screw hole processing method according to claim 2, characterized in that: In step 2), a plurality of positioning holes are provided on the slide rail, the slide rail is installed on the drill sleeve at the corresponding position through each positioning hole, and the slide rail and the drill template are connected by fasteners, and then the slider is installed on the slide rail, and the slider is slid to the hole mouth position of the deep hole.

6. A drilling tool for implementing the deep hole radial screw hole machining method according to claim 1, characterized in that: It includes a linear slide rail, a power mechanism and a tool; the linear slide rail includes a slide rail and a slider that can move freely along the slide rail, the power mechanism is installed on the slider, and the tool is installed on the power mechanism; The power mechanism includes a radial movement component and a rotary motion component. The radial movement component is installed on the slider, and the rotary motion component is installed on the radial movement component so that the radial movement component can drive the rotary motion component to move radially. The tool is installed on the rotary motion component so that the rotary motion component drives the tool to rotate.

7. The processing drill according to claim 6, characterized in that A slider connecting block is provided on the slider, and the radial movement component includes a two-way hydraulic cylinder, a cylinder seat and a pressure plate. The two-way hydraulic cylinder and the pressure plate are fixed on the cylinder seat, and the cylinder seat is fixed on the slider connecting block. A linear rail seat is also fixedly connected to the pressure plate and the slider connecting block, and a linear rail is installed on the linear rail seat. A connecting frame is also provided on the plunger of the two-way hydraulic cylinder, and a connecting plate is provided on the connecting frame. The other end of the connecting plate connected to the connecting frame is fixedly connected to the rotary motion component, and the rotary motion component is slidably connected to the linear rail through the linear rail slider, so that the two-way hydraulic cylinder drives the rotary motion component to reciprocate radially along the linear rail through the plunger, the connecting frame and the connecting plate.

8. The processing drill according to claim 7, characterized in that The rotary motion component includes a motor and a reducer. The output shaft of the motor is connected to the input shaft of the reducer through gears to reduce the rotational motion of the motor, increase the torque and convert it into radial rotational motion. The tool is connected to the output shaft of the reducer to drive the tool to rotate through the reducer.

9. A method for using the processing drill tool as claimed in claim 8, characterized in that: The following steps are involved: Step S1) The slide rail is fixedly connected to the drilling jig, and the slider is installed on the slide rail and can move freely along the slide rail; Step S2) fix the cylinder seat on the slider connection block, fix the bidirectional hydraulic cylinder and the pressure plate on the cylinder seat, fix the linear rail seat on the slider connection block and the cylinder seat, fix the linear rail on the linear rail seat, and fix the connecting frame to the connecting plate; install the tool on the output shaft of the reducer, then fix the rotating motion component as a whole to the connecting plate, slide the linear rail slider to the linear rail, and fix the connecting frame to the plunger of the bidirectional hydraulic cylinder; Step S3) moving the slider to the opening of the deep hole, and then installing the components assembled in step S2) on the slider as a whole through the slider connecting block; Step S4) Move the slider along the slide rail until the tool is aligned with the radial screw hole to be processed on the wall of the deep hole; turn on the motor, the motor rotates and drives the tool to rotate through the reducer, open the control valve switch of the two-way hydraulic cylinder, so that the plunger moves downward, driving the tool to move downward synchronously, and the tool drills the radial screw hole at the corresponding position. After the drilling is completed, the control valve switch of the two-way hydraulic cylinder is reversed, so that the plunger moves upward, driving the tool to move upward synchronously, and the tool exits; Step S5) Check whether all radial screw holes in the direction have been processed. If not, return to step S4. If yes, go to step S6); Step S6) Whether all radial screw holes on the wall of the deep hole have been processed, if yes, proceed to step S8); if not, proceed to step S7); Step S8) remove the slide rail from the drilling jig, then rotate the slide rail along the axis of the deep hole by a set angle until it corresponds to the position of the radial screw hole to be processed at the next angle, and then re-fix it with the drilling jig, and then return to step S4); Step S8) disassemble the slide rail and complete the processing of the radial screw hole on the hole wall of the deep hole.

10. The method for using a processing drill according to claim 9, characterized in that: The tool includes a twist drill and a tap, and step S4) includes a drilling step S4.1) and a tapping step S4.2); Step S4.1) Install the twist drill, and then move the slider along the slide rail until the twist drill is aligned with the radial screw hole to be processed on the wall of the deep hole; turn on the motor, the motor rotates and drives the twist drill to rotate through the reducer, turn on the control valve switch of the two-way hydraulic cylinder, so that the plunger moves downward, driving the twist drill to move downward synchronously, and the twist drill drills the radial screw hole at the corresponding position. After the drilling is completed, the control valve switch of the two-way hydraulic cylinder is reversed, so that the plunger moves upward, driving the twist drill to move upward synchronously, and the twist drill exits; Step S4.2) Move the drill tool to the mouth of the deep hole, remove the twist drill and replace it with a tap, then move the slider along the slide rail until the tap is aligned with the radial screw hole to be processed on the wall of the deep hole; turn on the motor, the motor rotates and drives the tap to rotate through the reducer, turn on the control valve switch of the two-way hydraulic cylinder, so that the plunger moves downward, driving the tap to move downward synchronously, and the tap taps the corresponding position. After the tapping is completed, the control valve switch of the two-way hydraulic cylinder is reversed, so that the plunger moves upward, driving the tap to move upward synchronously, and the tap exits.

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