Auxiliary jig for processing drill bit chamfering edge by hand file
By designing an auxiliary fixture for hand-file processing of drill bit inverted edges, the problem of unstable drill bit inverted edge processing in the prior art is solved, the consistency of the angle and size of the inverted edges is achieved, and the processing cost and time is reduced.
Patent Information
- Application Number
- CN202421998606.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-16
AI Technical Summary
In the prior art, there is instability in machining of the inverted blade, which leads to inconsistency in width and angle of the inverted blade, and is complex in operation, which increases processing cost and time.
An auxiliary fixture is designed for hand-file processing drill bit inverted edges. By adjusting the height of the fixture and the spacing of the support blocks, the positioning of the drill bit and the direction of the processing of the inverted edges are determined, the angle of the inverted edges is controlled and the size is ensured to be consistent.
The stable machining of the drill bit inverted edge is achieved, ensuring the consistency of the angle and dimensions of the inverted edge, and reducing the processing cost and time.
Smart Images
Figure CN223012059U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drill bit processing equipment, in particular to an auxiliary fixture for hand filing the chamfer of a drill bit. Background Art
[0002] As Figures 1 - 4 Shown is a schematic diagram of the chamfer and chamfer angle structure of a drill bit in the prior art. Among them, the plane ground at the edge of the drill bit forms a cutting edge line, and the two cutting edge lines are parallel both axially and radially. The distance between the two cutting edge lines in the axial direction is the chamfer width, and the angle between this plane and the tool axis is the chamfer angle.
[0003] Currently, the chamfer of the drill bit is processed by hand filing. When hand filing the chamfer of the drill bit, the drill bit is placed on an inclined block with a fixed size, and the placement direction and processing direction of the drill bit are fixed by the operator's hand feeling. The chamfer widths and angles processed are different; drill bits with different specifications and design structures correspond to different chamfer widths and angles, and only one inclined block can process the chamfer of drill bits with the same angle. If multiple inclined blocks are used, it will increase the processing cost and the processing space. Moreover, for overlong or over-large drill bits, the operator cannot stably press the drill bit during processing, which will cause the position of the drill bit to shift and the quality to be unqualified, and it can only be repaired or scrapped, increasing the processing time and cost. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is: In order to overcome the deficiencies in the prior art, the utility model provides an auxiliary fixture for hand filing the chamfer of a drill bit, which assists in processing the chamfer of the drill bit. By changing the height of the fixture and the distance between the support blocks, the placement of the drill bit and the direction of processing the chamfer are determined, and the chamfer angle is controlled and the dimensional consistency and processing stability are ensured.
[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: An auxiliary jig for machining the chamfer of a drill bit with a hand file, comprising a backing plate, a fulcrum connecting block, an angle block, a column, a first support block, a second support block and a load-bearing block. The fulcrum connecting block and the column are relatively arranged on the left and right sides of the backing plate. There are two fulcrum connecting blocks, which are arranged in parallel. One end of the angle block is rotatably connected between the two fulcrum connecting blocks through a fulcrum shaft, and the other end of the angle block is connected to the column through a first positioning rod. A long strip-shaped through hole is arranged on the side surface of the angle block along the length direction, and a plurality of positioning holes are arranged on the column along the vertical direction. One end of the first positioning rod is provided with a first knob, and the other end passes through the long strip-shaped through hole and one of the positioning holes to limit the angle block at an inclined angle, and the end of the first positioning rod is connected to the load-bearing block after passing through the positioning hole. When the first positioning rod is in different positioning holes, the inclined angle of the angle block is different. By adjusting the connection position of the first positioning rod and the column, the inclined angle of the angle block is adjusted. When the first positioning rod is arranged in different positioning holes, the angle block has different inclined angles; A second positioning rod is also arranged in the long strip-shaped through hole. One end of the second positioning rod is provided with a second knob, and the other end passes through the long strip-shaped through hole and the end is connected to the first support block; The second support block is supported below the load-bearing block; A first V-shaped groove is arranged on the upper surface of the load-bearing block, and a second V-shaped groove is arranged on the upper surface of the first support block, and the first V-shaped groove and the second V-shaped groove are opposite to each other to jointly form a positioning groove for the drill bit. A first baffle for resisting the drill bit is arranged at the lower end of the first support block in the inclined direction.
[0006] Further, a third V-shaped groove is arranged on the top surface of the second support block, and a positioning angle matching the third V-shaped groove is arranged on the load-bearing block. During use, the positioning angle is inserted into the third V-shaped groove.
[0007] Further, in order to realize the protection between the positioning rod and the angle block, the column and the load-bearing block, a first sleeve is further included. The first sleeve is sleeved outside the first positioning rod. During use, first, the first sleeve is passed through the angle block, the column and the load-bearing block, and then, the first positioning rod is passed through the first sleeve, avoiding the wear between the first positioning rod and the angle block, the column and the load-bearing block, and increasing the outer diameter of the first positioning rod through the first sleeve, increasing the bearing capacity.
[0008] Further, in order to realize the protection between the second positioning rod and the angle block, a second sleeve is further included. The second sleeve is arranged between the angle block and the second positioning rod. During use, first, the second sleeve is inserted into the long strip-shaped through hole of the angle block, and then, the second positioning rod is inserted from one side of the second support block into the second support block and the second sleeve in sequence, and the end is locked by the second knob, realizing the protection of the second positioning rod through the second sleeve.
[0009] Further, in order to improve the reliability of the connection between the second support block and the angle block and ensure the accuracy of the inclination angle of the upper surface of the second support block, a boss is provided on the side surface of the second support block close to the angle block, and a groove is provided on the side surface of the angle block. The boss is matched with the groove. Through the cooperation of the boss and the groove, the second support block is partially embedded in the angle block to realize the reliable connection between the two, thereby ensuring the stability of the inclination angle of the second support block.
[0010] Further, it further includes a third sleeve. The third sleeve is arranged between the angle block and the fulcrum shaft, and the third sleeve is sleeved on the fulcrum shaft. During use, first insert the third sleeve into the connection hole of the angle block, and then pass the fulcrum shaft through the fulcrum connection block, the third sleeve, and the fulcrum connection block from one side in sequence, and lock the end with a nut.
[0011] Further, in order to avoid interference between the first support block and the second support block, a relief groove is further provided at the bottom of the first support block. The relief groove can avoid the protruding position of the second support block, so as to ensure that both the first support block and the second support block can effectively support the load-bearing block.
[0012] Further, the second support block includes a plurality of degree support blocks with different heights, and the degree support blocks can correspondingly support angles of 15°, 20°, 25°, 30° and 35°. By setting different heights, different angle adjustments are realized, and the above support angles correspond to the drill bit chamfer angles of 15°, 20°, 25°, 30° and 35°.
[0013] Further, it further includes a second baffle, and the second baffle is connected to the lower end of the load-bearing block in the inclined direction. When the length of the drill bit is relatively small, the occupied support space is also relatively small, and it cannot abut against the first baffle to form an effective support. Therefore, by adding the second baffle, when the length is relatively small, it directly abuts against the second baffle to realize the processing of the drill bit.
[0014] Specifically, the first V-shaped groove and the second V-shaped groove can meet the range of the drill bit diameter of 15 mm - 25 mm, the length of the drill bit is below 300 mm, the width of the drill bit chamfer is 0.01 to 0.15 mm, and the chamfer angle is 15°, 20°, 25°, 30° and 35°.
[0015] The beneficial effects of the present utility model are as follows: An auxiliary jig for processing the chamfer of a hand file drill bit provided by the present utility model can realize the movement and angle conversion of the support block, the angle conversion of the load-bearing block, and has stable cooperation. Adjust the jig according to the length and diameter of the drill bit to limit the deviation of the drill bit during chamfer processing, control the chamfer angle and ensure that the size is consistent and the processing is stable. Description of the Drawings
[0016] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0017] Figure 1 It is a schematic structural diagram of the reverse edge on the drill bit.
[0018] Figure 2 It is Figure 1 The enlarged structural diagram at position A in
[0019] Figure 3 It is a schematic structural diagram of the reverse edge angle on the drill bit.
[0020] Figure 4 It is Figure 3 The enlarged structural diagram at position B in
[0021] Figure 5 It is a three-dimensional structural diagram of the first embodiment of the auxiliary fixture of the present utility model.
[0022] Figure 6 It is a top view structural diagram of the first embodiment of the auxiliary fixture.
[0023] Figure 7 It is a side view structural diagram of the first embodiment of the auxiliary fixture.
[0024] Figure 8 It is Figure 7 The sectional structural diagram of C-C in
[0025] Figure 9 It is Figure 7 The sectional structural diagram of D-D in
[0026] Figure 10 It is Figure 7 The sectional structural diagram of E-E in
[0027] Figure 11 It is Figure 7 The sectional structural diagram of F-F in
[0028] Figure 12 It is a three-dimensional structural diagram of the second embodiment of the auxiliary fixture.
[0029] Figure 13 It is a side view structural diagram of the second embodiment of the auxiliary fixture.
[0030] In the figure: 1. backing plate, 2. fulcrum connecting block, 3. angle block, 4. first support block, 5. load-bearing block, 6. column, 61. positioning hole, 7. first knob, 8. second support block, 9. first baffle, 10. first sleeve, 11. second sleeve, 12. third sleeve, 13. bolt, 14. nut, 15. boss, 16. fulcrum shaft, 17. second knob, 18. first positioning rod, 19. first V-shaped groove, 20. second V-shaped groove, 21. second positioning rod, 22. second baffle, 23. third V-shaped groove. Detailed implementation manners
[0031] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following detailed implementation manners are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalent forms.
[0032] Embodiment 1:
[0033] As Figures 5 - 7 shown, an auxiliary jig for chamfering the cutting edge of a drill bit during hand file processing according to the present utility model includes a backing plate 1, a fulcrum connecting block 3, an angle block 3, a column 6, a first support block 4, a second support block 8, and a load-bearing block 5. The backing plate 1 is a supporting component of the entire jig and can be fixed on the lifting table through bolts 13. The fulcrum connecting block 3 and the column 6 are oppositely arranged on the left and right sides of the backing plate 1. There are two fulcrum connecting blocks 3, and they are arranged in parallel. One end of the angle block 3 is rotatably connected between the two fulcrum connecting blocks 3 through a fulcrum shaft 16, and the other end of the angle block 3 is connected to the column 6 through a first positioning rod 18. A long strip-shaped through hole is provided on the side surface of the angle block 3 along the length direction, as Figure 11As shown, a plurality of positioning holes 61 are provided vertically on the column 6. In this embodiment, there are 5 positioning holes 61. One end of the first positioning rod 18 is provided with a first knob 7, and the other end passes through the long strip-shaped through hole and one of the positioning holes 61 to limit the angle block 3 at an inclined angle. And the end of the first positioning rod 18 is connected to the load-bearing block 5 after passing through the positioning hole 61. When the first positioning rod 18 is in different positioning holes 61, the inclined angle of the angle block 3 is different. By adjusting the connection position of the first positioning rod 18 and the column 6, the inclined angle of the angle block 3 is adjusted. When the first positioning rod 18 is arranged in different positioning holes 61, the angle block 3 has different inclined angles. A second positioning rod 21 is further provided in the long strip-shaped through hole. One end of the second positioning rod 21 is provided with a second knob 17, and the other end passes through the long strip-shaped through hole and the end is connected to the first support block 4. The second support block 8 supports below the load-bearing block 5. The upper surface of the load-bearing block 5 is provided with a first V-shaped groove 19, and the upper surface of the first support block 4 is provided with a second V-shaped groove 20, and the first V-shaped groove 19 and the second V-shaped groove 20 are opposite to each other to jointly form a positioning groove for the drill bit. The lower end of the first support block 4 in the inclined direction is provided with a first baffle 9 for resisting the drill bit. The top surface of the second support block 8 is provided with a third V-shaped groove 23, and the load-bearing block 5 is provided with a positioning angle matching the third V-shaped groove 23. During use, the positioning angle is embedded in the third V-shaped groove 23. In this embodiment, both the third V-shaped groove 23 and the positioning angle are right angles. In order to avoid interference between the first support block 4 and the second support block 8, an avoidance groove is further provided at the bottom of the first support block 4. The avoidance groove can avoid the protruding position of the second support block 8, so as to ensure that both the first support block 4 and the second support block 8 can effectively support the load-bearing block 5.
[0034] As Figure 8 shown, in order to achieve the protection between the positioning rod and the angle block 3, the column 6 and the load-bearing block 5, a first sleeve 10 is further included. The first sleeve 10 is sleeved outside the first positioning rod 18. During use, first pass the first sleeve 10 through the angle block 3, the column 6 and the load-bearing block 5, and then pass the first positioning rod 18 through the first sleeve 10, which avoids the wear between the first positioning rod 18 and the angle block 3, the column 6 and the load-bearing block 5, and increases the outer diameter of the first positioning rod 18 through the first sleeve 10, increasing the bearing capacity.
[0035] As Figure 9As shown in the figure, in order to protect the second positioning rod 21 and the angle block 3, a second sleeve 11 is further included, and the second sleeve 11 is arranged between the angle block 3 and the second positioning rod 21. During use, first insert the second sleeve 11 into the long through hole of the angle block 3, and then insert the second positioning rod 21 from one side of the second support block 8 into the second support block 8 and the second sleeve 11 in sequence, and lock the end through the second knob 17 to protect the second positioning rod 21 through the second sleeve 11. In order to improve the reliability of the connection between the second support block 8 and the angle block 3 and ensure the accuracy of the inclination angle of the upper surface of the second support block 8, a convex platform 15 is provided on the side surface of the second support block 8 close to the angle block 3, and a groove is provided on the side surface of the angle block 3, and the convex platform 15 is matched with the groove. Through the cooperation of the convex platform 15 and the groove, the second support block 8 is partially embedded in the angle block 3 to realize the reliable connection between the two, thereby ensuring the stability of the inclination angle of the second support block 8.
[0036] As Figure 10 shown in the figure, a third sleeve 12 is further included, and the third sleeve 12 is arranged between the angle block 3 and the fulcrum shaft 16, and the third sleeve 12 is sleeved on the fulcrum shaft 16. During use, first insert the third sleeve 12 into the connection hole of the angle block 3, and then insert the fulcrum shaft 16 through the fulcrum connection block 3, the third sleeve 12, and the fulcrum connection block 3 from one side in sequence, and lock the end through the nut 14.
[0037] Preferably, the second support block 8 includes a plurality of degree support blocks with different heights, and the degree support blocks can correspondingly support angles of 15°, 20°, 25°, 30° and 35°. By setting different heights, different angle adjustments are realized, and the above-mentioned support angles correspond to the drill bit chamfer angles of 15°, 20°, 25°, 30° and 35°. The first V-shaped groove 19 and the second V-shaped groove 20 can meet the range of the drill bit diameter of 15 mm - 25 mm, the length of less than 300 mm, the drill bit chamfer width of 0.01 to 0.15 mm, and the chamfer angle of 15°, 20°, 25°, 30° and 35°.
[0038] Embodiment 2:
[0039] As Figure 12 and Figure 13 shown in the figure, the difference between this embodiment and Embodiment 1 is that a second baffle 22 is provided at the lower end of the inclined direction of the weighing block, and the second support block 8 can be replaced with different heights, and the second baffle 22 is connected to the lower end of the inclined direction of the load-bearing block 5. When the length of the drill bit is relatively small, the occupied support space is also relatively small, and it cannot abut against the first baffle 9 to form an effective support. Therefore, the second baffle 22 is added. When the length is relatively small, it directly abuts against the second baffle 22 to realize the processing of the drill bit.
[0040] Working principle:
[0041] (1) Adjusting fixture: Loosen the first knob 7, pull out the load-bearing block 5, sleeve the first sleeve 10 into the corresponding positioning hole 61 of the column 6, select the second support block 8 with the corresponding degree according to the angle of the hand file, then place the second support block 8 under the load-bearing block 5 to make the third V-groove 23 match with the positioning angle, and screw on the first knob 7 to complete the adjustment of the fixture.
[0042] (2) Placing the drill bit: Loosen the second knob 17, adjust the angle of the first support block 4 so that the inclination angle of the first support block 4 is the same as that of the load-bearing block 5, and align the first V-groove 19 and the second V-groove 20; then, move the first support block 4 by a distance that can visually place the drill bit into the first V-groove 19 and the second V-groove 20 on both sides of the fixture, and then place the drill bit on the first V-groove 19 of the load-bearing block 5, adjust the distance of the first support block 4 so that the drill shank abuts against the first baffle 9 and the drill tip extends out of the first V-groove 19, and tighten the second knob 17.
[0043] (3) Machining the chamfer: Press the drill bit with the left hand, place the right arm on the lifting table, hold the file with the right hand to keep the file horizontal, and perform reciprocating grinding along the shape of the drill bit edge in the grinding mode. The angles and sizes of the chamfers are consistent and the machining is stable.
[0044] (4) Scope of use: The diameter of the drill bit is 1.5 to 25 mm, the length is below 300 mm, the width of the drill bit chamfer is 0.01 to 0.15 mm, and the chamfer angles are 15°, 20°, 25°, 30° and 35°. This fixture can change the chamfer angle of the machined drill bit by changing the position of the positioning hole 61 on the column 6, and the adjustable range is 0~45°.
[0045] Enlightened by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. An auxiliary jig for hand filing a drill bit back edge, characterized in that: It includes a pad, a fulcrum connecting block, an angle block, a column, a first support block, a second support block and a load-bearing block. The fulcrum connecting block and the column are relatively arranged on the left and right sides of the pad. There are two fulcrum connecting blocks, which are arranged in parallel. One end of the angle block is rotatably connected between the two fulcrum connecting blocks through a fulcrum shaft, and the other end of the angle block is connected to the column through a first positioning rod. A long strip through hole is provided on the side surface of the angle block along the length direction, and a plurality of positioning holes are provided on the column along the vertical direction. A first knob is provided at one end of the first positioning rod, and the other end passes through the long strip through hole and one of the positioning holes to limit the angle block to a tilt angle, and the first The end of the positioning rod passes through the positioning hole and is connected to the load-bearing block. When the first positioning rod is in different positioning holes, the inclination angle of the angle block is different; a second positioning rod is also provided in the elongated through hole, and a second knob is provided at one end of the second positioning rod, and the other end passes through the elongated through hole and the end is connected to the first support block; the second support block is supported under the load-bearing block; a first V-shaped groove is provided on the upper surface of the load-bearing block, and a second V-shaped groove is provided on the upper surface of the first support block, and the first V-shaped groove and the second V-shaped groove are opposite to each other to form a positioning groove for the drill bit, and a first baffle for resisting the drill bit is provided at the lower end of the first support block in the inclination direction.
2. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: A third V-shaped groove is provided on the top surface of the second supporting block, and a positioning angle matching the third V-shaped groove is provided on the load-bearing block. When in use, the positioning angle is embedded in the third V-shaped groove.
3. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: The utility model also comprises a first sleeve, wherein the first sleeve is sleeved on the outside of the first positioning rod.
4. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: Also included is a second sleeve disposed between the angle block and the second positioning rod.
5. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: A boss is provided on the side of the second support block close to the angle block, and a groove is provided on the side of the angle block, and the boss cooperates with the groove.
6. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: It also includes a third sleeve, which is arranged between the angle block and the fulcrum shaft, and the third sleeve is sleeved on the fulcrum shaft.
7. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: The bottom of the first supporting block is also provided with an avoidance groove.
8. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: The second support block includes a plurality of support blocks of different heights, and the support blocks of different heights can correspond to support angles of 15°, 20°, 25°, 30° and 35°.
9. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: It also includes a second baffle plate, which is connected to the lower end of the load-bearing block in the inclined direction.
10. The auxiliary jig for hand filing a drill bit back edge according to claim 1, characterized in that: The first V-groove and the second V-groove can meet the requirements of a drill bit diameter range of 15mm-25mm, a length of less than 300mm, a drill bit back edge width of 0.01 to 0.15mm, and a back edge angle of 15°, 20°, 25°, 30° and 35°.