A flange shaft outer circle radial hole drilling device and method thereof

Abstract

The application relates to a flange shaft outer circle radial hole drilling device and method, and belongs to the technical field of mechanical machining. The drilling device comprises an angle adjusting seat, the angle adjusting seat comprises a mounting plate, a first connecting plate, a second connecting plate and an angle plate, the first connecting plate is welded on the end face of the mounting plate, the second connecting plate is welded on the end face of the angle plate, the first connecting plate and the second connecting plate are arranged in abutment, and the first connecting plate and the second connecting plate are rotationally connected through a rotating shaft, an arc-shaped adjusting hole with the rotating shaft as the center is formed in the second connecting plate, a fastening pin is welded on the first connecting plate at the position corresponding to the adjusting hole, the fastening pin passes through the adjusting hole and is fastened in position by a fastening nut in threaded connection, and the first connecting plate and the second connecting plate are fastened in position. The drilling device is used for opening two radial screw holes on the outer circle of the output end flange shaft of a semi-combined crankshaft, is convenient to apply, and is high in opening efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a device and a method for drilling radial holes on the outer circle of a flange shaft. Background Art

[0002] Two radial screw holes, spaced at an angle α apart, need to be drilled into the outer circumference of the flange shaft at the output end of a semi-assembled crankshaft. In the existing machining process, after the crankshaft is turned horizontally, it is transferred horizontally to a boring machine to machine the flange holes on the end face. If the radial screw holes are drilled in a horizontal position at this point, the two screw holes are arranged at an angle α, and the boring machine cannot perform oblique drilling. Therefore, the part must be lifted vertically and placed on the boring machine's rotary table. The rotary table then rotates the crankshaft, and after it is rotated to the appropriate angle, it is oriented and then radial drilling is performed. After completion, the part is flipped back to a horizontal position.

[0003] Due to the shape and weight of the crankshaft parts, it is very inconvenient to flip them from horizontal to vertical and from vertical to horizontal. During the part flipping process, special high-power lifting equipment is required for lifting. These operations are only to complete the drilling of two screw holes, which has high drilling costs and low efficiency. Summary of the Invention

[0004] In order to solve the problems in the prior art, the present invention patent designs a drilling device for radial holes on the outer circumference of a flange shaft to solve the problem that drilling two radial screw holes on the outer circumference of the output end flange shaft of the existing semi-combined crankshaft is difficult and laborious.

[0005] The technical solution adopted by the present invention is: the drilling device includes an angle adjustment seat, the angle adjustment seat includes a mounting plate, a first connecting plate, a second connecting plate and an angle plate, the mounting plate is provided with a plurality of bolt holes for assembling the angle adjustment seat to the end face of the boring machine slide, the angle plate is used to install the magnetic base drill, the first connecting plate is welded to the end face of the mounting plate, the second connecting plate is welded to the end face of the angle plate, the first connecting plate and the second connecting plate are fitted together, and the two are rotatably connected by a rotating shaft at the center of the plate body, the second connecting plate is provided with an arc-shaped adjustment hole with the rotating shaft as the center, a fastening pin is welded on the position corresponding to the adjustment hole on the first connecting plate, the fastening pin passes through the adjustment hole and fastens the first connecting plate and the second connecting plate in place through a threaded fastening nut.

[0006] Furthermore, the mounting plate is a long right-angled triangular plate, the first connecting plate is welded to the end of the right-angled short side of the mounting plate, and a positioning plate is welded on the right-angled long side of the mounting plate, and the positioning plate is perpendicular to the plate surface of the mounting plate.

[0007] Furthermore, three supporting ribs are welded to the upper side of the mounting plate, wherein the middle rib is arranged along the length direction of the mounting plate, and the two ribs on both sides are respectively located at the two ends of the right-angled short side of the mounting plate, and the end faces of the three supporting ribs are welded and fixed to the first connecting plate.

[0008] Furthermore, the first connecting plate and the second connecting plate are circular plates of the same diameter, and scale lines are arranged along the circumferential direction on the outer peripheral surface of the first connecting plate, and identification lines are arranged on the outer peripheral surface of the second connecting plate. When the second connecting plate rotates, the rotation angle is identified by the identification lines and the scale lines on the outer peripheral surface of the first connecting plate.

[0009] Furthermore, a positioning seat is radially welded on the outer peripheral surface of the first connecting plate, the positioning seat is hollow and passes through the axial direction of the positioning seat, a positioning pin is passed through the positioning seat, the positioning pin is slidably engaged in the hollow cavity of the positioning seat, a spring is provided between the positioning pin and the positioning seat, the bottom end of the positioning pin is conical, and a semicircular first positioning hole is opened on the end face of the first connecting plate corresponding to the position of the positioning pin, and a plurality of semicircular second positioning holes uniformly distributed along the circumferential direction are opened on the outer peripheral end face of the corresponding second connecting plate, and the bottom end of the positioning pin is inserted into the positioning hole formed after the first positioning hole and the second positioning hole are overlapped and aligned.

[0010] Furthermore, the central axis hole of the second connecting plate is a countersunk hole, and the end surface of the rotating shaft is located in the countersunk hole.

[0011] Furthermore, two diagonal support plates are welded between one side of the angle plate and the second connecting plate.

[0012] The drilling method of the flange shaft outer radial hole drilling device provided by the present invention comprises the following steps:

[0013] (1) Install the angle adjustment seat on the end face of the boring machine ram and fix it to the end face of the ram by passing the bolts through the bolt holes on the mounting plate; make the positioning plate of the mounting plate flush with the lower surface of the ram to position the device;

[0014] (2) Attach the magnetic drill to the angle plate of the angle adjustment seat, rotate the second connecting plate according to the drilling needs, adjust the relative angle between the first connecting plate and the second connecting plate, and thus adjust the drilling angle of the magnetic drill. After reaching the appropriate angle position, insert the positioning pin into the two overlapping semicircular positioning holes and tighten the fastening nut at the same time;

[0015] (3) Using the X and Y axis moving mechanisms of the boring machine, the axis of the magnetic drill is aligned with the axis of the desired hole;

[0016] (4) The axial movement mechanism of the boring machine and the slide is linked to make the magnetic drill move along the axis of the hole to drill.

[0017] Compared with the prior art, the drilling device and method for the outer radial hole of the flange shaft designed by the patent of the present invention are improved in that: the magnetic drill and the boring machine slide are connected by an angle adjustment seat, and the mounting plate of the angle adjustment seat and the angle plate are connected by a first connecting plate and a second connecting plate that are rotatably connected. The relative angle between the angle plate and the mounting plate can be adjusted by rotating the second connecting plate, thereby realizing the relative angle adjustment between the magnetic drill and the slide. After the magnetic drill is moved to the drilling position by the axial moving mechanism of the boring machine, the axial angle of the magnetic drill only needs to be adjusted by the second connecting plate to complete the drilling of different radial screw holes. It is convenient and flexible to use, and there is no need to repeatedly lift the crankshaft workpiece. The drilling cost is low and the efficiency is high. Scale lines are set on the outer circumferential surface of the first connecting plate. The rotation angle can be accurately grasped by the marking line on the second connecting plate. At the same time, the rotation angle can also be positioned by the positioning pin and the positioning hole, which is more convenient to use. A fastening pin and an arc-shaped adjustment hole are also provided between the two connecting plates to assist in rotation positioning, ensuring the stability of the position between the two connecting plates after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a drilling device for radial holes on the outer circle of a flange shaft.

[0019] Figure 2 It is a schematic diagram of the front view of the structure of the drilling device for the radial hole on the outer circle of the flange shaft.

[0020] Figure 3 It is a side view structural diagram of a drilling device for radial holes on the outer circle of a flange shaft.

[0021] Figure 4 This is a schematic diagram of the installation of the drilling device for the outer radial hole of the flange shaft.

[0022] Figure 5 It is a schematic diagram of the application of the drilling device for the radial hole on the outer circle of the flange shaft.

[0023] In the figure, 1 is a mounting plate, 2 is an angle plate, 3 is a first connecting plate, 4 is a second connecting plate, 5 is a supporting rib plate, 6 is a positioning plate, 7 is a crankshaft part, 8 is a magnetic drill, 9 is a slide, 10 is a rotating shaft, 11 is a bolt hole, 21 is a diagonal support plate, 31 is a positioning seat, 32 is a positioning pin, 34 is a spring, 35 is a scale line, 36 is a fastening pin, 37 is a fastening nut, 41 is an adjustment hole, 42 is an identification line, and 43 is a second positioning hole. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described. The embodiments described are only embodiments of a part of the present invention, not all of it. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 、 2 As shown in Figures 3 and 4, the present invention patent designs an embodiment of a drilling device for radial holes on the outer circle of a flange shaft. In this embodiment, the drilling device includes an angle adjustment seat, which includes a mounting plate 1, a first connecting plate 3, a second connecting plate 4, and an angle plate 2. The mounting plate 1 is provided with three bolt holes 11, which are distributed in a herringbone shape on the mounting plate 1 and are used to assemble the angle adjustment seat to the end face of the boring machine slide 9. The angle plate 2 is used to install the magnetic base drill 8. The first connecting plate 3 is welded to the end face of the plate body of the mounting plate 1, and the two are perpendicular to each other. The second connecting plate 4 is welded to the end face of the angle plate 2, and the two plate surfaces are also perpendicular to each other.

[0026] The mounting plate 1 is a long, right-angled triangle. The first connecting plate 3 is welded to the end of the short right-angled side of the mounting plate 1. A positioning plate 6 is welded to the long right-angled side of the mounting plate 1, perpendicular to the plate surface of the mounting plate 1. Three supporting ribs 5 are welded to the upper side of the mounting plate 1. The middle rib runs along the length of the mounting plate 1, and the two ribs on both sides are located at the ends of the short right-angled sides of the mounting plate 1. The end faces of the three supporting ribs 5 are welded to the first connecting plate 3.

[0027] The first connecting plate 3 and the second connecting plate 4 are fitted together and rotatably connected by a rotating shaft 10 at the center of the plates. The rotating shaft 10 is welded to the center of the first connecting plate 3. A countersunk shaft hole is formed in the center of the second connecting plate 4. The end face of the rotating shaft 10 is located in the countersunk hole and does not protrude beyond the surface of the second connecting plate 4. The second connecting plate 4 has an arc-shaped adjustment hole 41 centered on the rotating shaft 10. A fastening pin 36 is welded perpendicularly to the position of the first connecting plate 3 corresponding to the adjustment hole 41. The fastening pin 36 passes through the adjustment hole 41 and is threadedly connected to a fastening nut 37 to secure the first connecting plate 3 and the second connecting plate 4 in place.

[0028] The first connecting plate 3 and the second connecting plate 4 are circular plates with the same diameter. Scale lines 35 are provided along the circumferential direction on the outer circumference of the first connecting plate 3, and identification lines 42 are provided on the outer circumference of the second connecting plate 4. When the second connecting plate 42 rotates, the rotation angle can be identified by the identification lines 42 and the scale lines 35 on the outer circumference of the first connecting plate 3.

[0029] A locating seat 31 is welded radially to the outer circumference of the first connecting plate 3. The locating seat 31 is hollow and extends axially through the locating seat 31. A locating pin 32 is inserted into the locating seat 31 and slides into the hollow cavity of the locating seat 31. A spring 34 is provided between the locating pin 32 and the locating seat 31 to push the locating pin 32 downward. The bottom end of the locating pin 32 is tapered. A semicircular first locating hole is provided on the end face of the first connecting plate 3 at the position corresponding to the locating pin. The corresponding outer circumferential end face of the second connecting plate 4 is provided with a plurality of semicircular second locating holes 43 evenly distributed along the circumference. When the first and second locating holes 43 are aligned, a complete circular locating hole is formed, into which the bottom end of the locating pin 32 can be inserted.

[0030] like Figure 4 、 5 As shown, when the drilling device for the outer radial hole of the flange shaft provided by the present invention is used:

[0031] (1) Install the angle adjustment seat on the end face of the boring machine ram 9 and fix it to the end face of the ram 9 by passing bolts through the bolt holes on the mounting plate 1; make the positioning plate 6 of the mounting plate 1 flush with the lower surface of the ram 9 to position the device;

[0032] (2) The magnetic drill 8 is adsorbed on the angle plate 2 of the angle adjustment seat, and the second connecting plate 4 is rotated according to the circumferential angle between the two screw holes to adjust the relative angle between the first connecting plate 3 and the second connecting plate 4, thereby adjusting the drilling angle of the magnetic drill 8. After reaching the appropriate angle position, the positioning pin 32 is inserted into the two overlapping semicircular edge positioning holes, and the fastening bolt 37 is tightened at the same time to firmly connect the two connecting plates;

[0033] (3) Using the X and Y axis moving mechanisms of the boring machine, the axis of the magnetic drill 8 is aligned with the axis of the screw hole of the crankshaft part to be drilled;

[0034] (4) The axial movement mechanism of the boring machine and the ram is coordinated and linked to move the magnetic drill 8 along the axis of the screw hole to perform drilling.

[0035] The above contents are merely preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. That is, any simple equivalent changes and modifications made in accordance with the claims and description of the present invention are still within the scope of the present invention.

Claims

1. A drilling device for radial holes on the outer circle of a flange shaft, characterized in that: The drilling device is mounted on the end of the slide of the boring machine, and includes an angle adjustment seat, the angle adjustment seat includes a mounting plate, a first connecting plate, a second connecting plate and an angle plate, the mounting plate is provided with a plurality of bolt holes for assembling the angle adjustment seat to the end face of the slide of the boring machine, the angle plate is used to install the magnetic base drill, the first connecting plate is vertically welded to the end face of the mounting plate, the second connecting plate is vertically welded to the end face of the angle plate, the first connecting plate and the second connecting plate are fitted together, and the two are rotatably connected by a rotating shaft at the center of the plate body, the second connecting plate is provided with an arc-shaped adjustment hole with the rotating shaft as the center, a fastening pin is welded on the position corresponding to the adjustment hole on the first connecting plate, the fastening pin passes through the adjustment hole and fixes the first connecting plate and the second connecting plate in place through a fastening nut connected by a thread. The mounting plate is a long right-angled triangular plate, the first connecting plate is welded to the end of the right-angled short side of the mounting plate, and a positioning plate is welded on the right-angled long side of the mounting plate. The positioning plate is perpendicular to the plate surface of the mounting plate, and the positioning plate of the mounting plate is flush with the lower plane of the slide.

2. The drilling device for radial holes on the outer circle of a flange shaft according to claim 1, characterized in that: Three supporting ribs are welded to the upper side of the mounting plate, wherein the middle rib is arranged along the length direction of the mounting plate, and the two ribs on both sides are respectively located at the two ends of the right-angled short side of the mounting plate, and the end faces of the three supporting ribs are welded and fixed to the first connecting plate.

3. The drilling device for radial holes on the outer circle of a flange shaft according to claim 2, characterized in that: The first connecting plate and the second connecting plate are circular plates with the same diameter. Scale lines are arranged along the circumferential direction on the outer circumferential surface of the first connecting plate, and identification lines are arranged on the outer circumferential surface of the second connecting plate. When the second connecting plate rotates, the rotation angle is identified by the identification lines and the scale lines on the outer circumferential surface of the first connecting plate.

4. The drilling device for radial holes on the outer circle of a flange shaft according to claim 3, characterized in that: A positioning seat is radially welded on the outer peripheral surface of the first connecting plate. The positioning seat is hollow and passes through the axial direction of the positioning seat. A positioning pin is passed through the positioning seat. The positioning pin slides and engages in the hollow cavity of the positioning seat. A spring is provided between the positioning pin and the positioning seat. The bottom end of the positioning pin is conical. A semicircular first positioning hole is opened on the end surface of the first connecting plate at the position corresponding to the positioning pin. The corresponding outer peripheral end surface of the second connecting plate is opened with a plurality of semicircular second positioning holes uniformly distributed along the circumferential direction. The bottom end of the positioning pin is inserted into the positioning hole formed by aligning the first positioning hole and the second positioning hole.

5. The drilling device for radial holes on the outer circle of a flange shaft according to claim 4, characterized in that: The central axis hole of the second connecting plate is a countersunk hole, and the end surface of the rotating shaft is located in the countersunk hole.

6. The drilling device for radial holes on the outer circle of a flange shaft according to claim 5, characterized in that: Two diagonal support plates are welded between one side of the angle plate and the second connecting plate.

7. A method for drilling two radial screw holes spaced at an angle α on the outer circumference of the flange shaft at the output end of a semi-assembled crankshaft, characterized in that: The steps of the drilling method are: (1) Install the angle adjustment seat of the drilling device for the outer radial hole of the flange shaft as claimed in claim 6 on the end face of the ram of the boring machine, and fix it to the end face of the ram by passing bolts through the bolt holes on the mounting plate; make the positioning plate of the mounting plate flush with the lower surface of the ram to position the device; (2) Attach the magnetic drill to the angle plate of the angle adjustment seat, rotate the second connecting plate according to the drilling needs, adjust the relative angle between the first connecting plate and the second connecting plate, and thus adjust the drilling angle of the magnetic drill. After reaching the appropriate angle position, insert the positioning pin into the two overlapping semicircular positioning holes and tighten the fastening nut at the same time; (3) Make the axis of the magnetic drill coincide with the axis of the desired hole through the X and Y axis moving mechanism of the boring machine; (4) The axial movement mechanism of the boring machine and the slide is linked to make the magnetic drill move along the axis of the hole to drill.

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