A tool for machining a rock drill cylinder

Abstract

The utility model discloses a tool for processing rock drill cylinder body relates to construction machinery technical field, and this tool for processing rock drill cylinder body includes: base platform, rotation guide assembly includes ball joint seat, ball head adapter disc and angle adjusting disc, and ball joint seat is equipped with spherical recess, and ball head adapter disc is equipped with spherical protrusion, and spherical protrusion is rotatably connected with spherical recess, and angle adjusting disc is sleeved in ball joint seat, clamp includes fixed block and mounting bracket, locking assembly includes screw, upper pressing plate, lower pressing plate, and is respectively with the both ends of screw and is screwed, alignment assembly includes laser emitter, laser receiver, and laser emitter is located in angle adjusting disc top end. The utility model discloses through ball joint seat and ball head adapter disc and realizes the quick adjustment of the inclination, and then through the bidirectional locking of screw to upper and lower pressing plate, ensures the structural rigidity under the inclination working condition, solves the problem of low angle adjustment efficiency, locking rigidity deficiency, and calibration relies on artificial experience.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery technology, and in particular to a tooling for processing the cylinder body of a rock drill. Background Technology

[0002] Rock drills are tools used to directly extract stone and are widely used in mining, railway construction, water conservancy projects, and other engineering projects. They are important machinery for infrastructure construction. The cylinder is the basic component of a rock drill, and its machining precision directly affects the various performance aspects of the rock drill.

[0003] Existing rock drill cylinder machining fixtures generally employ fixed positioning structures or suggested angle adjustment devices. This involves adjusting the angle by replacing steel shims with different inclination angles, requiring the machine to be stopped and bolts removed to replace the shims. Alternatively, a worm gear drives a graduated dial for rotation, making angle adjustment highly dependent on the dial's markings. Therefore, existing technologies suffer from the following problems: low angle adjustment efficiency, insufficient locking rigidity, and reliance on manual experience for calibration.

[0004] Therefore, there is a need for a tooling that can precisely adjust the angle and has excellent locking capabilities for machining rock drill cylinders. Utility Model Content

[0005] The main purpose of this utility model is to provide a tooling for processing rock drill cylinder bodies, aiming to solve the problems of low angle adjustment efficiency, insufficient locking rigidity, and reliance on manual experience for calibration of existing rock drill cylinder body processing tooling.

[0006] To achieve the above objectives, the tooling for machining the cylinder body of a rock drill proposed in this utility model includes:

[0007] abutment;

[0008] A rotary guide assembly, the rotary guide assembly further comprising a ball joint seat, a ball head adapter plate and an angle adjustment plate, the ball joint seat being fixedly disposed on the base and having a spherical groove with a vertically upward opening, the ball head adapter plate having a spherical protrusion at its bottom end, the spherical protrusion being rotatably connected to the spherical groove, and the angle adjustment plate being sleeved on the periphery of the ball joint seat and rotatably connected to the ball joint seat;

[0009] The clamp includes a fixing block and a mounting bracket, the mounting bracket being fixedly mounted on the ball joint adapter plate, and the fixing block being connected to the ball joint adapter plate via the mounting bracket;

[0010] A locking assembly, comprising a screw, an upper pressure plate, and a lower pressure plate, wherein the screw passes through a ball joint seat in a vertical direction, the upper pressure plate is screwed to the top end of the screw, and the lower pressure plate is screwed to the bottom end of the screw;

[0011] The alignment component includes a laser emitter and a laser receiver. The laser emitter is disposed at the top of the angle adjustment disk, and the laser receiver is fixedly disposed on the bottom surface of the ball joint seat and located at the center of the axis of the ball joint seat, corresponding to the laser emitter.

[0012] Preferably, the screw includes a left-handed section and a right-handed section, the left-handed section is disposed at the top end of the screw and connected to the upper pressure plate, and the right-handed section is disposed at the bottom end of the screw and connected to the lower pressure plate.

[0013] Preferably, the locking assembly further includes a preload indicator ring, which is sleeved on the middle section of the screw. The screw is provided with a hexagonal drive head corresponding to the preload indicator ring, and the hexagonal drive head is fixedly connected to the preload indicator ring by a set screw.

[0014] Preferably, the upper pressure plate has an upper through hole corresponding to the left-handed segment, and the left-handed segment is connected to the upper pressure plate through the upper through hole. The lower pressure plate has a lower through hole corresponding to the right-handed segment, and the right-handed segment is connected to the lower pressure plate through the lower through hole. The inner side of the hole wall of both the upper through hole and the lower through hole is provided with anti-slip texture, and the anti-slip texture is bidirectional staggered sawtooth shape.

[0015] Preferably, the laser emitter further includes a magnetic base and a cross laser emitter, the cross laser emitter being fixedly mounted on the top of the magnetic base, the magnetic base being magnetically connected to the angle adjustment disk and located at the 0° reference position on the outer edge of the angle adjustment disk.

[0016] Preferably, the alignment component further includes a stepper motor and a calibration controller. The calibration controller is located at one end of the angle adjustment disk and is signal-connected to the laser receiver. The stepper motor is located at the bottom end of the angle adjustment disk, and the calibration controller is electrically connected to the stepper motor.

[0017] Preferably, the clamp further includes a double-ear positioning seat and a fixing bolt. One end of the mounting bracket is provided with a threaded hole corresponding to the double-ear positioning seat, and the fixing bolt passes through the double-ear positioning seat and is threadedly connected to the mounting bracket.

[0018] This utility model discloses a tooling for machining rock drill cylinders. It utilizes a universal ball joint with spherical protrusions and grooves to achieve rapid tilt adjustment for different sizes or spatial angle requirements of the rock drill cylinder. Simultaneously, upper and lower pressure plates screwed to the upper and lower ends of the screw ensure the structural rigidity of the tooling. Combined with an alignment component, it resolves positioning deviation issues and improves machining efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the tooling used for machining the cylinder body of a rock drill according to an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of a tooling for machining a rock drill cylinder according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the screw structure according to an embodiment of the present invention.

[0023] Explanation of icon numbers:

[0024] label name label name 1000 Tooling for machining rock drill cylinders 100 abutment 200 Rotary guide assembly 210 Ball joint 211 spherical groove 220 Ball head adapter 221 spherical protrusion 230 Angle adjustment dial 300 clamps 310 Fixed block 320 Mounting rack 330 Binocular positioning base 400 Locking components 410 screw 411 Left-handed segment 412 Right-handed segment 413 Hexagonal drive head 420 upper pressure plate 421 Top through hole 430 Lower pressure plate 431 Bottom through hole 500 Alignment component 510 laser emitter 511 Magnetic base 512 Cross laser emitter 520 Laser receiver

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] like Figures 1-3 As shown, this utility model proposes a tooling 1000 for machining the cylinder body of a rock drill, comprising: a base 100; a rotary guide assembly 200, which further includes a ball joint seat 210, a ball head adapter plate 220, and an angle adjustment plate 230. The ball joint seat 210 is fixedly disposed on the base 100 and has a spherical groove 211 with an opening vertically upward. The bottom end of the ball head adapter plate 220 has a spherical protrusion 221, which is rotatably connected to the spherical groove 211. The angle adjustment plate 230 is sleeved on the periphery of the ball joint seat 210 and rotatably connected to the ball joint seat 210; and a clamp 300, which includes a fixing block 310 and a mounting frame 320, which is fixedly disposed on the ball head adapter plate 220. The fixing block 310 is connected to the ball joint adapter plate 220 via the mounting bracket 320; the locking assembly 400 includes a screw 410, an upper pressure plate 420, and a lower pressure plate 430. The screw 410 passes through the ball joint seat 210 in a vertical direction. The upper pressure plate 420 is screwed to the top end of the screw 410, and the lower pressure plate 430 is screwed to the bottom end of the screw 410; the alignment assembly 500 includes a laser emitter 510 and a laser receiver 520. The laser emitter 510 is located at the top of the angle adjustment plate 230. The laser receiver 520 is fixedly installed on the bottom surface of the ball joint seat 210 and located at the center of the axis of the ball joint seat 210, corresponding to the laser emitter 510.

[0030] In this embodiment, the ball joint seat 210 further includes a bracket and a mounting plate. The bracket is fixedly connected to the base 100, and the angle adjustment disk 230 is arranged around the circumference of the bracket. The mounting plate is disposed at the top of the bracket, and the extension direction of the mounting plate is perpendicular to the installation direction of the bracket. The top surface of the mounting plate is provided with an upward-opening spherical groove 211. The ball joint adapter 220 has an L-shaped structure, wherein the horizontal section abuts against the top surface of the mounting plate, and the vertical section is disposed at the end of the horizontal section and is fixedly connected to the mounting frame 320. The spherical protrusion 221 at the bottom of the horizontal surface of the ball joint adapter 220 is embedded in the spherical groove 211 at the top of the mounting plate, forming a spherical rotating pair with the spheres coinciding. The spherical rotating pair can eliminate the rotation dead point, and the frictional resistance is controlled by the gap between the spherical protrusion 221 and the spherical groove 211. The upper pressure plate 420 is located at the top of the ball joint adapter 220, and the mounting bracket 320 is located at one end of the upper pressure plate 420. A spherical protrusion 221 has an axially oriented through hole. The screw 410 passes through this through hole and is screwed onto the upper pressure plate 420 and the lower pressure plate 430 respectively. When the screw 410 rotates, the upper pressure plate 420 moves downwards along the screw 410, and the lower pressure plate 430 moves upwards along the screw 410, simultaneously pressing the ball joint adapter 220 and the ball joint seat 210, generating a bidirectional preload force to achieve bidirectional rigid locking of the spherical rotating pair. The angle adjustment disc 230 has 0-15° precision graduations engraved on its surface, allowing operators to directly read the angle, replacing traditional measuring tools. It can also bear the tilting moment of the ball joint and suppress vibration displacement. The laser receiver 520 is fixedly installed at the top center of the base 100 corresponding to the laser emitter 510, and is collinear with the axis of the spherical protrusion 221. During the installation and disassembly of this utility model, the operator can determine whether the tooling 1000 is correctly aligned by the cooperation between the laser receiver 520 and the laser emitter 510, which is conducive to the rapid installation of the equipment.

[0031] In detail, the upper pressure plate 420 is used to press the upper end face of the ball joint adapter 220 to prevent the cylinder from detaching under the action of axial cutting force, thereby suppressing the workpiece from floating; the ball joint seat 210 is provided with an upward-opening slot, so that the bottom end of the ball joint seat 210 forms a fixed space, and the lower pressure plate 430 extends into the fixed space of the ball joint seat 210 through the slot. The top surface of the lower pressure plate 430 abuts against the inner top surface of the fixed space in the ball joint seat 210, preventing the ball joint from being displaced due to the radial component force during inclined machining, thereby resisting the sinking caused by cutting vibration.

[0032] In one embodiment, the screw 410 includes a left-handed section 411 and a right-handed section 412. The left-handed section 411 is disposed at the top end of the screw 410 and connected to the upper pressure plate 420, and the right-handed section 412 is disposed at the bottom end of the screw 410 and connected to the lower pressure plate 430.

[0033] In this embodiment, the left-hand section 411 at the top of the screw 410 is screwed into the upper pressure plate 420 through a left-hand thread, and the right-hand section 412 at the bottom is screwed into the lower pressure plate 430 through a right-hand thread. When the screw 410 rotates clockwise, the distance between the two pressure plates decreases by 1.5 mm per second. The bidirectional thread converts the uniaxial torque into a symmetrical axial force, improving the locking efficiency, avoiding motion interference between the upper pressure plate 420 and the lower pressure plate 430, and ensuring that the upper and lower end faces of the ball joint are evenly stressed.

[0034] In one embodiment, the locking assembly 400 further includes a preload indicator ring, which is sleeved on the middle section of the screw 410. The screw 410 is provided with a hexagonal drive head 413 corresponding to the preload indicator ring, and the hexagonal drive head 413 is fixedly connected to the preload indicator ring by a set screw.

[0035] In this embodiment, the inner hole of the preload indicator ring is clearance-fitted with the hexagonal drive head 413 of the screw 410, and the ring surface is engraved with a torque scale of 0-50 N·m (graduation value 1 N·m), and is radially locked and fixed by a set screw. When the operator applies torque to the hexagonal drive head 413 with a wrench, the preload indicator ring rotates synchronously. The operator observes the alignment of the scale ring with the baseline to avoid overtravel.

[0036] Understandably, the preload indicator ring displays the locking force quantitatively, preventing overpressure from causing deformation of the rock drill cylinder; the set screw fixing mechanism prevents the scale ring from slipping, with torque reading error <±3%; and the overtravel warning reduces the risk of equipment damage and extends the service life of the ball joint.

[0037] In one embodiment, the upper pressure plate 420 is provided with an upper through hole 421 corresponding to the left-handed section 411, and the left-handed section 411 is connected to the upper pressure plate 420 through the upper through hole 421. The lower pressure plate 430 is provided with a lower through hole 431 corresponding to the right-handed section 412, and the right-handed section 412 is connected to the lower pressure plate 430 through the lower through hole 431. The inner side of the hole wall of both the upper through hole 421 and the lower through hole 431 is provided with anti-slip texture, and the anti-slip texture is bi-directional staggered sawtooth shape.

[0038] In this embodiment, the upper through hole 421 and the lower through hole 431 are provided with bidirectional staggered trapezoidal meshing teeth that match the thread. After the inner wall threads of the upper through hole 421 and the lower through hole 431 are screwed together, the saw teeth are embedded in the bottom of the thread valley of the screw 410 to form a mechanical interlock, thereby increasing the critical slip force.

[0039] In another embodiment, the anti-slip textured surface is boronized to increase its wear resistance life.

[0040] In one embodiment, the laser emitter 510 further includes a magnetic base 511 and a cross laser emitter 512. The cross laser emitter 512 is fixedly disposed on the top of the magnetic base 511. The magnetic base 511 is magnetically connected to the angle adjustment disk 230 and is located at the 0° reference position on the outer edge of the angle adjustment disk 230.

[0041] In this embodiment, the magnetic base 511 has a built-in permanent magnet (including but not limited to neodymium iron boron) that is magnetically connected to the outer edge of the angle adjustment disk 230 at the 12 o'clock position (0° reference position). The cross laser irradiates the laser receiver 520, which is mounted at the center of the bottom surface of the mounting plate and is collinear with the axis of the spherical protrusion 221. The normal of the receiving surface is parallel to the laser axis. The 0° reference position of the angle adjustment disk 230 eliminates the eccentricity error caused during installation, enabling quick assembly and disassembly and adapting to the transformation of production lines for multiple models.

[0042] In another embodiment, the laser receiver 520 is a four-quadrant photoelectric sensor, which is connected to the machine tool PLC via a data cable to calculate the laser projection offset in real time.

[0043] In one embodiment, the alignment component 500 further includes a stepper motor and a calibration controller. The calibration controller is located at one end of the angle adjustment disk 230 and is signal-connected to the laser receiver 520. The stepper motor is located at the bottom end of the angle adjustment disk 230, and the calibration controller is electrically connected to the stepper motor.

[0044] In this embodiment, the calibration controller receives the signal from the laser receiver 520 and drives the stepper motor connected to the angle adjustment disk 230 to achieve automatic fine-tuning within ±0.05° of angle deviation. The alignment component 500 may also be equipped with a flexible coupling, which is located at the bottom of the angle adjustment disk 230. The output shaft of the stepper motor is connected to the bottom gear of the angle adjustment disk 230 via the flexible coupling, realizing fully automatic closed-loop calibration, reducing manual intervention, and improving calibration accuracy.

[0045] In one embodiment, the clamp 300 further includes a double-ear positioning seat 330 and a fixing bolt. The top of the mounting bracket 320 is provided with a threaded hole corresponding to the double-ear positioning seat 330, and the fixing bolt passes through the double-ear positioning seat 330 and is threadedly connected to the mounting bracket 320.

[0046] It is understandable that the fixing block 310 is fixed to the mounting frame 320 by the double-ear positioning seat 330 bolts. The fixing block 310 is used to clamp the rock drill cylinder fixing block 310 in multiple ways. The outer edges of the multiple fixing blocks 310 form a circle to abut against the inner wall of the rock drill cylinder to form a fixation.

[0047] In this embodiment, there are three fixing blocks 310. The length of the three fixing blocks 310 can be adjusted to fit the cylinder of a rock drill with a diameter of Φ80-150mm. The operator fixes the fixing blocks 310 by adjusting the bolt connection position between the double-ear positioning seat 330 and the mounting frame 320, preventing the fixing blocks 310 from falling off. This allows the fixing blocks 310 to be fixed during the switching process to accommodate different cylinder sizes.

[0048] This utility model discloses a tooling for machining rock drill cylinders. It utilizes a universal ball joint with spherical protrusions and grooves to achieve rapid tilt adjustment for different sizes or spatial angle requirements of the rock drill cylinder. Simultaneously, upper and lower pressure plates screwed to the upper and lower ends of the screw ensure the structural rigidity of the tooling. Combined with an alignment component, it resolves positioning deviation issues, improves machining efficiency, and comprehensively addresses the challenges of positioning distortion, efficiency bottlenecks, and adaptability to various working conditions in the multi-stage machining of rock drill cylinders.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A tooling for machining a rock drill cylinder, characterized in that, include: abutment; A rotary guide assembly, the rotary guide assembly further comprising a ball joint seat, a ball head adapter plate and an angle adjustment plate, the ball joint seat being fixedly disposed on the base and having a spherical groove with an opening vertically upward, the ball head adapter plate having a spherical protrusion at its bottom end, the spherical protrusion being rotatably connected to the spherical groove, and the angle adjustment plate being sleeved on the periphery of the ball joint seat and rotatably connected to the ball joint seat; The clamp includes a fixing block and a mounting bracket, the mounting bracket being fixedly mounted on the ball joint adapter plate, and the fixing block being connected to the ball joint adapter plate via the mounting bracket; A locking assembly, comprising a screw, an upper pressure plate, and a lower pressure plate, wherein the screw passes through a ball joint seat in a vertical direction, the upper pressure plate is screwed to the top end of the screw, and the lower pressure plate is screwed to the bottom end of the screw; The alignment component includes a laser emitter and a laser receiver. The laser emitter is disposed at the top of the angle adjustment disk, and the laser receiver is fixedly disposed on the bottom surface of the ball joint seat and located at the center of the axis of the ball joint seat, corresponding to the laser emitter.

2. A tool for machining a rock drill cylinder as claimed in claim 1, characterized in that The screw includes a left-handed section and a right-handed section. The left-handed section is located at the top of the screw and connected to the upper pressure plate, while the right-handed section is located at the bottom of the screw and connected to the lower pressure plate.

3. A tooling for machining a rock drill cylinder as claimed in claim 2, characterized in that, The locking assembly also includes a preload indicator ring, which is sleeved on the middle section of the screw. The screw is provided with a hexagonal drive head corresponding to the preload indicator ring, and the hexagonal drive head is fixedly connected to the preload indicator ring by a set screw.

4. A tooling for machining a rock drill cylinder as claimed in claim 3, characterized in that, The upper pressure plate is provided with an upper through hole corresponding to the left-handed section, and the left-handed section is connected to the upper pressure plate through the upper through hole. The lower pressure plate is provided with a lower through hole corresponding to the right-handed section, and the right-handed section is connected to the lower pressure plate through the lower through hole. The inner side of the hole wall of both the upper through hole and the lower through hole is provided with anti-slip texture, and the anti-slip texture is bi-directional staggered sawtooth shape.

5. The tooling for machining a rock drill cylinder as defined in claim 1, characterized in that, The laser emitter also includes a magnetic base and a cross laser emitter. The cross laser emitter is fixedly mounted on the top of the magnetic base. The magnetic base is magnetically connected to the angle adjustment disk and is located at the 0° reference position on the outer edge of the angle adjustment disk.

6. The tooling for machining a rock drill cylinder as defined in claim 1, characterized in that, The alignment component also includes a stepper motor and a calibration controller. The calibration controller is located at one end of the angle adjustment disk and is connected to the laser receiver signal. The stepper motor is located at the bottom end of the angle adjustment disk, and the calibration controller is electrically connected to the stepper motor.

7. The tooling for machining a rock drill cylinder as defined in claim 1, characterized in that, The fixture also includes a double-ear positioning seat and a fixing bolt. One end of the mounting bracket is provided with a threaded hole corresponding to the double-ear positioning seat, and the fixing bolt passes through the double-ear positioning seat and is threadedly connected to the mounting bracket.

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