CN111715921A - Method and clamp for radially drilling hole in external spline gear - Google Patents
Method and clamp for radially drilling hole in external spline gear Download PDFInfo
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- CN111715921A CN111715921A CN202010681609.5A CN202010681609A CN111715921A CN 111715921 A CN111715921 A CN 111715921A CN 202010681609 A CN202010681609 A CN 202010681609A CN 111715921 A CN111715921 A CN 111715921A
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- 238000005553 drilling Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000000452 restraining effect Effects 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 13
- 208000008918 voyeurism Diseases 0.000 claims description 9
- 230000001815 facial effect Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 210000003781 tooth socket Anatomy 0.000 description 12
- 244000144985 peep Species 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/28—Drill jigs for workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2247/00—Details of drilling jigs
- B23B2247/04—Jigs using one or more holes as datums for drilling further holes
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Abstract
The invention discloses a method and a clamp for radially drilling a hole on an external spline gear, which comprise a positioning table for positioning the spline gear, a drill plate positioned above the positioning table, and an installation body fixed on the positioning table and used for installing the drill plate, wherein the drill plate is provided with a drill bushing hole, a drill bushing is arranged in the drill bushing hole, and a shaft core wire of the drill bushing is always vertically intersected with a shaft core wire of the spline gear to be processed on the positioning table; clamping components capable of clamping two sides of the spline gear are arranged on the drill jig plates on two sides of the drill bushing hole. The positioning table is provided with a longitudinal V-shaped groove, and the middle part of the V-shaped groove is provided with a transverse gear groove; the V-shaped groove is provided with a virtual middle vertical surface, the included angle between the virtual middle vertical surface and the front groove edge and the included angle between the virtual middle vertical surface and the front groove edge are equal, and when the two ends of the spline gear are placed in the V-shaped groove, the shaft core line of the spline gear is always positioned on the virtual middle vertical surface. The advantages are that: not only realize quick location and accurate drilling, can also realize quick alignment tooth's socket that punches, show improvement processingquality and machining efficiency.
Description
Technical Field
The invention relates to a clamp, in particular to a clamp for a method for radially drilling a hole in an external spline gear, and belongs to the field of machining tools.
Background
The middle of a part of the shaft part is provided with an external spline, the number of teeth of the external spline is integral multiple of 3, 3 holes are uniformly drilled in a tooth groove of the spline along the circumference, and the holes need to be positioned in the middle of the tooth groove of the spline. For an axle, the maximum diameter is 169, the length is 500, and the weight of a single piece is 35 kg. Because of the control cost, ordinary radial drill is selected for use to the equipment. Because the number of teeth and the size of the external splines are different, the number of each batch is small, and the different types of external splines are frequently changed. Because the design can be applicable to many varieties simple drilling anchor clamps have the difficulty, adopt marking off or try to bore and measure the main shaft position of relocking after the alignment again all the time, then implement the processing of punching.
The defects and shortcomings of the processing method adopting the scribing or pilot drilling measurement re-alignment are as follows:
1. the workload is large and the quality is not guaranteed. Because the two tooth surfaces of the spline tooth socket form an approximate V shape, under the condition of no guidance of a drill bushing, when a cutter is fed, the drill bit always touches one of the two tooth surfaces, and when the strong constraint of the drill bushing is not available, the strong rotating force of the drill bit can bounce the drill bit, so that the centering instability is caused, and the accurate positioning cannot be realized; the axis line of the three holes is difficult to be vertical to the axis of the gear shaft, and the axes of the three holes are difficult to be positioned on the same plane; the service performance is adversely affected after assembly; and serious position out-of-tolerance and scrapping can occur.
2. The method of locking the position of the main shaft and positioning after alignment by marking or trial drilling measurement results in low efficiency and high labor intensity.
Disclosure of Invention
The technical problems to be solved by the invention are mainly as follows: the traditional mode of processing a hole between spline teeth is difficult to position, the problem of not tight restriction is solved, and the problem of inconvenience in determining the position of the next drilling hole is solved.
Aiming at the problems, the technical scheme provided by the invention is as follows:
a method for radially drilling a hole on an external spline gear is characterized in that a clamp with a positioning table is designed, a restraining device for restraining a drill bit is arranged on the clamp, the axial core line of the drill bit is always vertically intersected with an axial core line II of the spline gear placed on the positioning table, and when a drilling point of the spline gear is positioned on the axial core line of the drill bit, the drill bit can drill a radial hole on the drilling point of the spline gear under the restraint of the restraining device.
Further, the restraint device for restraining the drill bit is arranged on the clamp, and comprises a vibration control component for controlling the vibration of the drill bit, and a clamping component for preventing the drill bit and the vibration control component from shifting relative to a drilling point of the spline gear together is arranged at a position close to the vibration control component.
Further, the positioning table, which is provided in the state where the shaft core line of the drill bit always perpendicularly intersects with the shaft core line two of the spline gear placed on the positioning table, is designed to have a virtual plane, and the positioning table is set so that the shaft core line of the spline gear always lies on the virtual plane when spline gears of different diameters are placed.
Further, the axial core line of the drill bit is always perpendicularly intersected with the axial core line II of the spline gear placed on the positioning table, and the axial core line of the drill bit restrained by the restraining device is located on the virtual plane when the positioning table is set.
The clamp for radially drilling the hole on the external spline gear comprises a positioning table for positioning the spline gear, a drill plate and an installation body, wherein the drill plate is positioned above the positioning table; clamping components capable of clamping two sides of the spline gear are arranged on the drill jig plates on two sides of the drill bushing hole; when the clamping component clamps the spline gear and enables a drilling point needing to be drilled on the spline gear to be located on a first shaft core line of the drill bushing, the drill bit can penetrate through the drill bushing to accurately drill a radial hole in the drilling point of the spline gear.
Furthermore, the positioning table is provided with a longitudinal V-shaped groove, a transverse gear groove is formed in the middle of the V-shaped groove, the V-shaped groove is provided with a rear groove face and a front groove face, a virtual middle vertical face is arranged between the rear groove face and the front groove face, the included angle between the virtual middle vertical face and the rear groove face is equal to the angle between the virtual middle vertical face and the front groove face, two ends of the spline gear are placed in the V-shaped groove, the spline gear is located in the gear groove, and when two ends of the spline gear are placed in the V-shaped groove, a shaft core line two of the spline gear is always located on the virtual middle vertical face.
Further, the axis line of the drill bushing is positioned on the virtual middle vertical plane of the V-shaped groove of the positioning table.
Furthermore, the clamping component comprises a clamping block arranged on the drilling template at one side of the drill trepanning and an eccentric pin arranged on the drilling template at the other side of the drill trepanning, the surface of the clamping block facing the eccentric pin is a clamping surface, the vertical facial line of the outermost peripheral surface of the eccentric pin away from the circle center is a pressing and fixing facial line, and the upper end of the eccentric pin is provided with a rotating handle.
Furthermore, the clamping surface of the clamping block is a vertical plane, and the pressing surface line of the eccentric pin is parallel to the clamping surface; correspondingly, the width of the gear groove of the positioning table is larger than the axial width of the spline gear, when the eccentric pin rotates to strongly extrude the spline gear, the pressing and fixing surface line and the clamping surface of the clamping and fixing component respectively generate a tendency of being attached to the end face of the spline gear, and the spline gear which is not placed in the right position is forced to perform adjustable axial displacement in the gear groove.
Furthermore, a notch of the spline gear tooth groove in the gear groove can be observed from one end of the positioning table body on one side of the gear groove on the front groove surface of the V-shaped groove; the peep hole is arranged in the slot, and the spline gear tooth groove in the gear groove can be observed from one end of the positioning table; one end of the peeping pipe, which is positioned in the gear groove, is provided with a flange, the other end of the peeping pipe is provided with an external thread, and a fastening nut is sleeved on the external thread; correspondingly, the notch is positioned on one side of the gear groove and is widened to form a flange groove for sliding of the flange.
The invention has the advantages that: quick location and accurate drilling not only can be realized to radial drilling in-process on external spline gear, can also realize quick alignment tooth's socket that punches, are showing and are improving processingquality and machining efficiency.
Drawings
FIG. 1 is a perspective view of the fixture for radially drilling holes in an externally splined gear;
FIG. 2 is a schematic plan view of the fixture for radially drilling holes in an externally splined gear;
FIG. 3 is a perspective view of the fixture for radially drilling holes in an externally splined gear, mainly illustrating the structure of the cap on the post;
FIG. 4 is a partial schematic view of FIG. 1, illustrating primarily the structural relationship of the related components of the bushing plate;
FIG. 5 is a perspective view of the fixture for radially drilling holes in an externally splined gear, showing primarily the position of the sight tube on the fixture;
fig. 6 is a schematic plan view of the viewing tube.
In the figure: 1. a spline gear; 11. a second axial core line; 12. a radial bore; 2. a positioning table; 21. a V-shaped groove; 22. a front groove surface; 23. a rear groove surface; 24. a gear groove; 25. a virtual median plane; 26. a post hole; 27. fastening a bolt; 3. drilling a template; 31. drilling a sleeve hole; 32. drilling a sleeve; 33. a drill bit; 34. a first axial core line; 4. a column; 41. a cap; 42. an annular groove; 43. a limit screw; 5. a clamping block; 51. clamping a surface; 52. a tooth socket fixing pin; 6. an eccentric pin; 61. pressing and fixing the noodle; 62. a handle; 7. a notch; 71. a flange groove; 8. a sight tube; 81. a peephole; 82. blocking edges; 83. and (5) tightening the nut.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
as shown in fig. 1, the externally splined gear is a portion of the propeller shaft body that protrudes radially outward, and has a common axial line with the propeller shaft body, and hereinafter the externally splined gear shaft is a collective term for the externally splined gear together with the propeller shaft body.
The invention aims to provide a method and a clamp for drilling three radial holes 12 which are positioned in tooth grooves and are in the same plane at equal arc lengths or equal angles on a spline gear, wherein the number of teeth of the spline gear is integral multiple of 3.
As shown in fig. 1 and 2, a method for radially drilling a hole on an external spline gear is to design a fixture with a positioning table 2, and a restraining device for restraining a drill bit is arranged on the fixture to ensure that an axial core line of the drill bit is always vertically intersected with an axial core line two 11 of a spline gear 1 placed on the positioning table 2, so that the drilling direction of the drill bit is ensured to be radial; when the drilling point of the spline gear 1 is positioned on the drill bit axis, the drill bit can drill a radial hole 12 in the drilling point of the spline gear 1 under the constraint of the constraint device.
In the above method, the step of providing a restraining device on the jig for restraining the drill includes providing a vibration control member for controlling vibration of the drill, and providing a clamping member for preventing the drill and the vibration control member from shifting together relative to the drilling point of the spline gear 1 at a position close to the vibration control member. According to the arrangement, double restraint is actually carried out, the first heavy restraint is to restrain the drill bit, the drill bit is prevented from shaking, and the problem that the size of the hole to be punched is not standard is avoided; the second re-constraint is to prevent the drill bit and the jitter control means from deviating together from the drilling point while drilling. Thus, the radial hole 12 can be accurately drilled at a drilling point, and the hole with a standard aperture can be ensured.
In the above method of radially drilling a hole in an external spline gear, the positioning table 2, which is described in order to ensure that the axial core line of the drill always perpendicularly intersects the axial core line two 11 of the spline gear 1 placed on the positioning table 2, is designed to have a virtual plane, and the positioning table 2 is set so that the axial core line of the spline gear 1 always lies on the virtual plane when spline gears 1 of different diameters are placed. This virtual plane may be at a variety of angles relative to the horizontal, but for ease of positioning of other related structures, a virtual central vertical plane 25 as described below is preferred. To arrange the positioning table 2 so that the axial center line of the spline gear 1 always lies on the virtual plane when placing spline gears 1 of different diameters, a positioning table having a V-shaped groove can achieve this effect, which will be further described later.
In the method as described above, the axial line of the drill bit is ensured to always perpendicularly intersect with the second axial line 11 of the spline gear 1 placed on the positioning table 2, and the axial line of the drill bit restrained by the restraining means is positioned on the virtual plane. In this way, regardless of the change in the diameter of the spline gear placed on the positioning table 2, it is possible to ensure that the axial line of the drill always intersects the second axial line 11 of the spline gear 1 placed on the positioning table 2 perpendicularly, and that the radial hole 12 can be drilled at the drilling point as long as the drilling point is located on the axial line of the drill regardless of which tooth groove on the outer periphery of the spline gear 1 the drilling point is located in.
As shown in fig. 1-3, a jig for radially drilling a hole in an external spline gear according to a method for radially drilling a hole in an external spline gear includes a positioning table 2 for positioning the spline gear 1, a jig plate 3 located above the positioning table 2, and a column 4 fixed to the positioning table 2 for mounting the jig plate 3, i.e., a mounting body as described herein. The positioning table 2 is provided with a column hole 26 with an upward opening at the rear, the lower end of the upright column 4 is inserted into the column hole 26, and the upright column and the positioning table 2 are fixed through a fastening bolt 27. The upper end of the upright post 4 is sleeved with a post cap 41, and the post cap 41 can rotate around the upright post; the cap 41 has a threaded hole, the upper end of the post has a plurality of annular grooves 42 of different heights, and a stop screw 43 is screwed into the threaded hole of the cap 41 and further inserted into the annular groove 42 of the post. The height of the cap 41 on the upright 4 is adjusted according to the insertion of the limit screw 43 into the annular grooves 42 of different heights of the upright. One end of the drilling template 3 is fixedly connected with the column cap 41. The drilling template 3 and the fixedly connected cap 41 are rotatable about the column to facilitate placement and removal of the externally splined gear shaft, and during drilling, the drilling template 3 is rotated back to a position perpendicular to the imaginary central vertical plane 25 as described below. The drill plate 3 is provided with a drill bushing hole 31, a drill bushing 32 is arranged in the drill bushing hole 31, when drilling, a drill bit 33 is sleeved in the drill bushing 32, the drill bit 33 and the drill bushing 32 are in extremely small clearance fit, and the drill bit 33 rotating at high speed in the drill bushing 32 can be limited to shake to the utmost extent. The first axial core line 34 of the drill bushing 32 is always vertically intersected with the second axial core line 11 of the spline gear 1 to be processed on the positioning table 2, namely the first axial core line 34 of the drill bushing 32 is ensured to be vertically intersected with the second axial core line 11 of the spline gear 1, and the first axial core line 34 of the drill bushing 32 is superposed with the axial core line of the drill; clamping components capable of clamping two sides of the spline gear 1 are arranged on the drill jig plates 3 on two sides of the drill bushing hole 31; this is to fix the drill bit 33, the drill bushing 32 together with the drill plate 3 to the spline gear 1 to prevent the drill bit from deviating from the drilling point. When the clamping component clamps the spline gear 1 and makes the drilling point of the spline gear 1 to be drilled on the first shaft core line 34 of the drill sleeve 32, the drill bit 33 can accurately drill the radial hole 12 on the drilling point of the spline gear 1 through the drill sleeve hole 31.
The following is a further improvement.
As shown in fig. 1 and 3, the positioning table 2 is provided with a longitudinal V-shaped groove 21, a transverse gear groove 24 is arranged in the middle of the V-shaped groove 21, the V-shaped groove 21 is provided with a rear groove surface 23 and a front groove surface 22, a virtual middle vertical surface 25 is arranged between the rear groove surface 23 and the front groove surface 22, the included angle between the virtual middle vertical surface 25 and the rear groove surface 23 is equal to the angle between the virtual middle vertical surface 25 and the front groove surface 22, two ends of the spline gear 1 are placed in the V-shaped groove 21, the spline gear 1 is positioned in the gear groove 24, and when shafts at two ends of the spline gear 1 are placed in the V-shaped groove 21, no matter how large the diameter of the spline gear is, the shaft core wire two 11 of the spline gear 1 is always positioned on the virtual middle vertical surface 25.
The axial core line I34 of the drill bushing 32 is positioned on the virtual middle vertical surface 25 of the V-shaped groove 21 of the positioning platform 2.
Thus, as can be seen from the above arrangement, the V-shaped groove 21 of the positioning table 2 is directed upward. It can be easily understood that as long as the V-shaped groove 21 has the same angle between the virtual middle vertical plane 25 and the rear groove surface 23 and the same angle between the virtual middle vertical plane 25 and the front groove surface 22, the second shaft core line 11 of the spline gear 1 is always positioned on the virtual middle vertical plane 25 no matter how large the diameter of the spline gear is; when the positioning table 2 is arranged, the first axial core line 34 of the drill sleeve 32 is positioned on the virtual middle vertical surface 25 of the V-shaped groove 21 of the positioning table 2, the function of the positioning table is that the drill bit 33 and the drill sleeve 32 thereof do not need to be moved transversely regardless of the size of the spline gear 1 to be placed, only the tooth socket needing to be punched is rotated to the virtual middle vertical surface 25, and then the punching point in the tooth socket is axially adjusted to be right below the drill bit, so that the radial hole 12 can be punched just as described.
As shown in fig. 4, the clamping member includes a clamping block 5 disposed on the drilling template 3 on one side of the drill bushing hole 31 and an eccentric pin 6 disposed on the drilling template 3 on the other side of the drill bushing hole 31, a surface of the clamping block 5 facing the eccentric pin 6 is a clamping surface 51, a vertical surface line of the outermost peripheral surface of the eccentric pin 6 from the center of the circle is a pressing and fixing surface line 61, and a rotating handle 62 is disposed at the upper end of the eccentric pin 6. Obviously, the arrangement is that the two sides of the spline gear 1 are pressed by the pressing and fixing surface of the eccentric pin 6 by rotating the rotating handle, and since the pressing and fixing surface is a curved surface, only one line of the curved surface is actually pressed on the side surface of the spline gear 1, and the line is called as the pressing and fixing surface line 61.
The clamping surface 51 of the clamping block 5 is a vertical plane, and the pressing and fixing surface line 61 of the eccentric pin 6 is parallel to the clamping surface 51; correspondingly, the width of the gear groove 24 of the positioning table 2 is greater than the axial width of the spline gear 1, when the eccentric pin 6 rotates to strongly press the spline gear 1, the pressing and fixing surface line 61 and the clamping surface 51 of the clamping component respectively generate a tendency of being attached to the end surface of the spline gear 1, and the spline gear 1 which is not aligned is forced to make an adjustable axial displacement in the gear groove 24. The advantages of such an arrangement are: when the tooth slot to be drilled has been determined and rotated to just below the drill bit 33 and the drilling point in the tooth slot is not yet located just below the drill bit 33, the spline gear shaft is forced to move axially by rotating the handle 62 of the eccentric pin so that the drilling point is located just below the drill bit 33.
The clamping block 5 is provided with a tooth socket positioning hole, a tooth socket fixing pin 52 capable of popping up the clamping surface 51 is arranged in the tooth socket positioning hole, one end of the tooth socket fixing pin 52, which is positioned on the clamping surface 51, is a tooth socket positioning end, one end, which is positioned on the back surface of the clamping surface 51, is a handle end, and a pressure spring, one end of which is pressed on the clamping block 5 and the other end of which is pressed on the tooth socket fixing pin 52, is arranged in the tooth socket positioning hole. When the spline gear 1 is used, the handle end of the spline tooth groove fixing pin 52 is pulled by a hand, the spline tooth groove positioning end is retracted into the spline tooth groove positioning hole of the clamping block 5, when the selected spline tooth groove is aligned with the spline tooth groove positioning hole, the handle end of the spline tooth groove fixing pin 52 is released, and the spline tooth groove positioning end of the spline tooth groove fixing pin 52 is inserted into the selected spline tooth groove to realize spline tooth groove positioning of the spline gear 1.
As shown in fig. 5 and 6, a notch 7 which can observe the tooth groove of the spline gear 1 in the gear groove 24 from one end of the positioning table 2 is arranged on the positioning table 2 body on the gear groove 24 side of the front groove surface 22 of the V-shaped groove 21; a peep pipe 8 capable of sliding along the notch 7 is arranged on the notch 7, and a peep hole 81 capable of observing the tooth groove of the spline gear 1 in the gear groove 24 from one end of the positioning table 2 is formed in the peep pipe 8; one end of the peeping pipe 8, which is positioned in the gear groove 24, is provided with a flange 82, the other end of the peeping pipe is provided with an external thread, and a fastening nut 83 is sleeved on the external thread; correspondingly, the notch 7 is widened at one side of the gear groove 24 to form a rib groove 71 for sliding the rib 82.
The arrangement is that after the drill bit is used for drilling the first radial hole 12 on the spline gear 1, the drilling tooth grooves of the second radial hole and the third radial hole are found as soon as possible. The principle is as follows: firstly, the tooth space right below the drill bit 33 is determined as the punching tooth space of the first radial hole 12, then the positions of the other two tooth spaces are determined by measuring equal arc length or by counting the number of teeth, the position of the tooth space positioned in front is used as the position for searching the second punching tooth space, then the peep pipe 8 is moved to the position on the notch 7, which can just observe the tooth space through the peep hole 81, and the position is fixed by the fastening nut 83. Thus, when the first radial hole 12 has been drilled with the drilling tooth slot, the spline gear 1 is rotated and viewed through the peephole 81, and when the tooth slot with the opening of the first radial hole 12 is viewed, the drilling tooth slot of the second radial hole 12 is already positioned just below the drill 33. According to the method, the tooth grooves for punching the third radial hole 12 can be quickly found.
In summary, by using the method for radially drilling the hole in the external spline gear and the clamp manufactured according to the method, not only can quick positioning and accurate drilling be realized in the process of radially drilling the hole in the external spline gear, but also the drilling tooth socket can be quickly aligned, and the processing quality and the processing efficiency are obviously improved.
The above-described embodiments are intended to illustrate the invention more clearly and should not be construed as limiting the scope of the invention covered thereby, any modification of the equivalent should be considered as falling within the scope of the invention covered thereby.
Claims (10)
1. A method for radially drilling holes in an external spline gear is to design a clamp with a positioning table (2), and is characterized in that a restraining device for restraining a drill bit is arranged on the clamp, so that an axial core line of the drill bit is always perpendicularly intersected with a second axial core line (11) of the spline gear (1) placed on the positioning table (2), and when a drilling point of the spline gear (1) is located on the axial core line of the drill bit, the drill bit can drill a radial hole (12) in the drilling point of the spline gear (1) under the restraint of the restraining device.
2. A method of radially drilling a hole in an externally splined gear according to claim 1, wherein the step of providing a restraining means on the fixture for restraining the drill bit comprises providing a vibration control member for controlling the vibration of the drill bit, and providing a clamping member proximate the vibration control member for preventing the drill bit and the vibration control member from shifting together relative to the drilling point of the splined gear (1).
3. The method for radially drilling a hole in an externally splined gear according to claim 2, wherein said positioning table (2) ensuring that the axial core line of the drill always perpendicularly intersects the axial core line two (11) of the splined gear (1) placed on the positioning table (2) is designed to have a virtual plane, and the positioning table (2) is arranged such that the axial core line of the splined gear (1) always lies on the virtual plane when spline gears (1) of different diameters are placed.
4. A method for radially drilling a hole in an externally splined gear according to claim 3, wherein said ensuring that the axial core line of the drill bit always perpendicularly intersects the axial core line two (11) of the splined gear (1) placed on the positioning table (2) is such that the axial core line of the drill bit restrained by the restraining means lies in a virtual plane when set.
5. A clamp for radially drilling holes in an external spline gear, designed according to the method of claim 1, comprises a positioning table (2) for positioning the spline gear (1), a drilling template (3) positioned above the positioning table (2), and a mounting body fixed on the positioning table (2) and used for mounting the drilling template (3), wherein the clamp is characterized in that: the drill jig plate (3) is provided with a drill bushing hole (31), a drill bushing (32) is arranged in the drill bushing hole (31), and a first shaft core line (34) of the drill bushing (32) is always vertically intersected with a second shaft core line (11) of the spline gear (1) to be processed on the positioning table (2); clamping components capable of clamping two sides of the spline gear (1) are arranged on the drill jig plates (3) on two sides of the drill bushing hole (31); when the clamping component clamps the spline gear (1) and enables a drilling point needing to be drilled on the spline gear (1) to be located on a first axial core line (34) of the drill bushing (32), the drill bit (33) can penetrate through the drill bushing (32) to accurately drill a radial hole (12) in the drilling point of the spline gear (1).
6. The jig for radially drilling a hole in an externally splined gear according to claim 5, wherein: the positioning table (2) is provided with a longitudinal V-shaped groove (21), a transverse gear groove (24) is formed in the middle of the V-shaped groove (21), the V-shaped groove (21) is provided with a rear groove face (23) and a front groove face (22), a virtual middle vertical face (25) is arranged between the rear groove face (23) and the front groove face (22), an included angle between the virtual middle vertical face (25) and the rear groove face (23) is equal to an angle between the virtual middle vertical face (25) and the front groove face (22), two ends of the spline gear (1) are placed in the V-shaped groove (21), the spline gear (1) is located in the gear groove (24), and when two ends of the spline gear (1) are placed in the V-shaped groove (21), a shaft core line two (11) of the spline gear (1) is always located on the virtual middle vertical face (25).
7. The jig for radially drilling a hole in an externally splined gear according to claim 6, wherein: the first axial core line (34) of the drill bushing (32) is positioned on the virtual middle vertical plane (25) of the V-shaped groove (21) of the positioning platform (2).
8. The jig for radially drilling a hole in an externally splined gear according to claim 6, wherein: the clamping component comprises a clamping block (5) arranged on the drilling template (3) on one side of the drill bushing hole (31) and an eccentric pin (6) arranged on the drilling template (3) on the other side of the drill bushing hole (31), the surface of the clamping block (5) facing the eccentric pin (6) is a clamping surface (51), a vertical facial line of the outermost peripheral surface of the eccentric pin (6) away from the circle center is a pressing facial line (61), and a rotating handle (62) is arranged at the upper end of the eccentric pin (6).
9. The jig for radially drilling a hole in an externally splined gear according to claim 8, wherein: the clamping surface (51) of the clamping block (5) is a vertical plane, and the pressing and fixing facial line (61) of the eccentric pin (6) is parallel to the clamping surface (51); correspondingly, the width of the gear groove (24) of the positioning table (2) is larger than the axial width of the spline gear (1), when the eccentric pin (6) rotates to strongly press the spline gear (1), the pressing and fixing surface line (61) and the clamping surface (51) of the clamping component respectively generate a tendency of being attached to the end surface of the spline gear (1), and the spline gear (1) which is not aligned is forced to perform adjustable axial displacement in the gear groove (24).
10. The jig for radially drilling a hole in an externally splined gear according to claim 7, wherein: a notch (7) which can observe the tooth groove of the spline gear (1) in the gear groove (24) from one end of the positioning table (2) is arranged on the positioning table (2) body on one side of the gear groove (24) of the front groove surface (22) of the V-shaped groove (21); a peeping tube (8) capable of sliding along the notch (7) is arranged on the notch (7), and a peeping hole (81) capable of observing the tooth space of the spline gear (1) in the gear groove (24) from one end of the positioning table (2) is formed in the peeping tube (8); one end of the peeping pipe (8) positioned in the gear groove (24) is provided with a flange (82), the other end of the peeping pipe is provided with an external thread, and a fastening nut is sleeved on the external thread; correspondingly, the notch (7) is positioned on one side of the gear groove (24) and is widened to form a flange groove (71) for sliding of the flange (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010681609.5A CN111715921A (en) | 2020-07-15 | 2020-07-15 | Method and clamp for radially drilling hole in external spline gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010681609.5A CN111715921A (en) | 2020-07-15 | 2020-07-15 | Method and clamp for radially drilling hole in external spline gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111715921A true CN111715921A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010681609.5A Pending CN111715921A (en) | 2020-07-15 | 2020-07-15 | Method and clamp for radially drilling hole in external spline gear |
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| Country | Link |
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| CN (1) | CN111715921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517968A (en) * | 2020-11-27 | 2021-03-19 | 四川航天长征装备制造有限公司 | Quick positioning circumferential drilling device and method for pull rod type parts on valve |
| CN114905066A (en) * | 2022-06-07 | 2022-08-16 | 航天科工哈尔滨风华有限公司 | Turbine rotor shaft dynamic unbalance blade de-weighting drilling positioning clamping tool and using method |
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| CN112517968A (en) * | 2020-11-27 | 2021-03-19 | 四川航天长征装备制造有限公司 | Quick positioning circumferential drilling device and method for pull rod type parts on valve |
| CN114905066A (en) * | 2022-06-07 | 2022-08-16 | 航天科工哈尔滨风华有限公司 | Turbine rotor shaft dynamic unbalance blade de-weighting drilling positioning clamping tool and using method |
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