Safety wheel drilling tool

Abstract

The utility model discloses a safety wheel drilling tool which comprises a rack base, a first translation mechanism, a left clamping rack, a right clamping rack, a second translation mechanism, a right piece supporting plate and a drilling positioning frame. The rack base is fixed below the electric spindle of the drilling machine; the right supporting plate horizontally and linearly moves on the right clamping rack through a second translation mechanism; a left supporting piece plate is arranged on one side of the upper end of the left clamping rack, and a left clamping part is arranged on the side of the left supporting piece plate; a right clamping part is arranged on one side of the right supporting plate; the left clamping part and the right clamping part support the safety wheel tail column, and the lower end of the drilling positioning frame is respectively supported on the left supporting piece plate and the right supporting piece plate; two positioning drill holes are formed above the drilling positioning frame; the first translation mechanism drives the safety wheel tail column to horizontally and linearly move; a drilling machine drill bit is used for forming a tail column hole threaded hole in the safety wheel tail column through the two positioning drill holes; according to the technical scheme, the tail column threaded hole can be formed in the safety wheel tail column more safely and conveniently, the displacement accuracy is higher, and the operation risk of machining technicians is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for processing safety wheels of rail vehicles, and specifically relates to a safety wheel drilling tool. Background Technology

[0002] With the increasing development of urban rail transit, the requirements for the comfort and safety of rail vehicles are also increasing. Safety wheels are installed on monorail vehicles, and they are important components. In the production of safety wheels, drilling is required on the tail column of the safety wheel. After the tail column is drilled, further processing is carried out. Traditional workpiece drilling is done with a vise on a single-arm drill table to hold the workpiece. However, the tail column of the safety wheel is a rotating workpiece, and the vise cannot hold it stably. In addition, the drilling position of the tail column is off-center, which increases the drilling difficulty. The unstable workpiece clamping also increases the safety risks for processing technicians. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and to provide a safety wheel drilling tool.

[0004] A safety wheel drilling fixture includes: a platform base, a first translation mechanism, a left clamping platform, a right clamping platform, a second translation mechanism, a right support plate, and a drilling positioning frame; the platform base is fixed below the electric spindle of a drilling machine; the first translation mechanism is mounted on the platform base; the first translation mechanism includes a clamping platform support plate; the lower ends of the left and right clamping platforms are fixed to the upper sides of the upper surface of the clamping platform support plate; a left support plate is provided on one side of the upper end of the left clamping platform. The side of the workpiece plate is provided with a left clamping part; the right support plate is mounted on the right clamping platform through the second translation mechanism; the right support plate is provided with a right clamping part on one side; the left clamping part and the right clamping part support the safety wheel tail column, the two positioning feet at the lower end of the drilling positioning frame, the lower middle part of the drilling positioning frame is provided with a safety wheel tail column sleeve, the safety wheel tail column sleeve is fitted onto the safety wheel tail column; there are two positioning drill holes above the safety wheel tail column sleeve; the drill bit of the drilling machine drills through the two positioning drill holes to open the tail column threaded hole.

[0005] Both the first and second translation mechanisms are lead screw kinematic pairs.

[0006] The first translation mechanism includes: a first lead screw, a first lead nut, a first slide rail, a first slider, and a lead screw drive motor. The base of the platform has base side plates on both sides, and two first slide rails are arranged parallel between the base side plates on both sides. The first lead screw is located between the two first slide rails. The lead screw drive motor is connected to the first lead screw via a coupling. The clamping table support plate has first sliders at each of its four corners. The first sliders are sleeved on the first slide rails. The first lead nut is fixed to the middle of the lower end face of the clamping table support plate and is sleeved on the first lead screw. The lead screw drive motor drives the clamping table support plate to translate linearly along the first slide rails.

[0007] The right clamping platform includes: a lower support plate, a U-shaped support frame, and an upper support plate, which are fixedly connected from bottom to top.

[0008] The second translation mechanism includes: a second slide rail, a second slider, a lead screw shaft connector, a lead screw nut, a second lead screw, a lead screw torsion cap, and a lead screw wrench; two second slide rails are provided, and the two second slide rails are fixed parallel to each other on the upper end face of the support plate on the platform, and the lead screw nut is fixed between the two second slide rails; two second sliders are provided on both sides of the lower end face of the right support plate, and the two second sliders are respectively sleeved on the second slide rails; the lead screw shaft connector is fixed on one side of the right support plate; one end of the second lead screw is shaft-connected to the lead screw shaft connector; the threaded rod of the second lead screw is sleeved on the lead screw nut; the lead screw torsion cap is provided at the other end of the second lead screw; the lead screw torsion cap is provided with a wrench sleeve hole, and the lead screw wrench can be sleeved in the wrench sleeve hole; the second lead screw is driven to rotate by the lead screw wrench, which drives the right support plate to translate linearly on the second slide rail.

[0009] The left clamping platform has a left support plate on one side of its upper end, and a left clamping part on the side of the left support plate; a right clamping part is provided on one side of the right support plate; the left clamping part and the right clamping part are arranged opposite to each other; the left polygonal clamping port can be connected with the right polygonal clamping port to form a regular hexagonal safety wheel tail column clamping port.

[0010] The upper surface of the left support plate has two auxiliary frame fixing holes; the upper surface of the right support plate has two pin slide grooves; the midpoint between the two auxiliary frame fixing holes and the midpoint between the two pin slide grooves intersect on the same normal line of the safety wheel tail column clamping opening.

[0011] The drilling positioning frame is a Z-shaped bracket, with a first positioning foot and a second positioning foot respectively at the lower end of the drilling positioning frame; two first positioning pins are provided below the first positioning foot, and the two first positioning pins can be respectively sleeved in two auxiliary frame fixing holes; two second positioning pins are provided below the second positioning foot, and the two second positioning pins can be respectively sleeved in two pin rod sliding grooves.

[0012] Each positioning borehole is equipped with an annular drill bit sleeve; the axis of the annular drill bit sleeve coincides with the axis of the positioning borehole.

[0013] This technical solution proposes a safety wheel drilling fixture, which includes: a platform base, a first translation mechanism, a left clamping platform, a right clamping platform, a second translation mechanism, a right support plate, and a drilling positioning frame. The platform base is fixed below the electric spindle of the drilling machine. The right support plate moves horizontally and linearly on the right clamping platform via the second translation mechanism. A left support plate is provided on one side of the upper end of the left clamping platform, and a left clamping part is provided on the side of the left support plate. A right clamping part is provided on one side of the right support plate. The left and right clamping parts support the safety wheel tail column, and the lower end of the drilling positioning frame is supported on the left and right support plates respectively. Two positioning drill holes are provided above the drilling positioning frame. The first translation mechanism drives the safety wheel tail column to move horizontally and linearly. The drilling machine drill bit drills through the two positioning drill holes to drill threaded holes in the safety wheel tail column. This technical solution makes drilling threaded holes in the safety wheel tail column safer and more convenient, with higher displacement accuracy, and reduces the operational risks for machining technicians. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of a safety wheel drilling fixture according to this utility model;

[0015] Figure 2 This is a partial sectional view of a safety wheel drilling tool according to the present invention;

[0016] Figure 3 This is a structural diagram of the clamping frame of a safety wheel drilling fixture according to this utility model;

[0017] Figure 4 This is a partial structural diagram of the clamping frame of a safety wheel drilling tool according to this utility model;

[0018] Figure 5 This is a schematic diagram of the drilling positioning frame structure of a safety wheel drilling fixture according to this utility model;

[0019] Figure 6 This is a schematic diagram of the safety wheel tail column clamping state of a safety wheel drilling tool according to this utility model;

[0020] Figure 7 This is a schematic diagram of the usage state of a safety wheel drilling tool according to this utility model;

[0021] Figure 8 This is a schematic diagram of the structure of the safety wheel tail column in a safety wheel drilling tool of this utility model.

[0022] In the diagram: 1. Base plate; 11. Base side plate; 21. First lead screw; 22. First lead screw nut; 23. First slide rail; 24. First slider; 25. Clamping platform support plate; 26. Lead screw drive motor; 3. Left clamping platform; 31. Left support plate; 32. Left clamping part; 33. Auxiliary frame fixing hole; 4. Right clamping platform; 41. Lower support plate of the platform; 42. U-shaped support frame; 43. Upper support plate of the platform; 51. Second slide rail; 52. Second slider; 53. Lead screw shaft connector; 54. Lead screw nut seat; 55. Second lead screw, 56. Lead screw torsion cap, 561. Wrench rod sleeve hole, 57. Lead screw wrench, 571. Stepped shaft shaft, 572. Wrench ball cap, 6. Right support plate, 61. Right clamping part, 62. Pin slide groove, 7. Drilling positioning frame, 71. First positioning foot, 711. First positioning pin, 72. Second positioning foot, 721. Second positioning pin, 73. Safety wheel tail column sleeve, 74. Positioning drill hole, 75. Ring drill bit sleeve, 8. Safety wheel tail column, 81. Tail column hole threaded hole, 9. Benchtop drilling machine. Detailed Implementation

[0023] The technical solution will be further described clearly and completely below with reference to the accompanying drawings. The described embodiments are only a part of the technical solution, not all of the embodiments. All other embodiments obtained by those skilled in the art based on this technical solution without creative effort are within the scope of protection of this utility model.

[0024] Example 1

[0025] See Figures 1 to 5 As shown, a safety wheel drilling fixture includes: a platform base 1, a first translation mechanism, a left clamping platform 3, a right clamping platform 4, a second translation mechanism, a right support plate 6, and a drilling positioning frame 7.

[0026] The first translation mechanism includes: a first lead screw 21, a first lead screw nut 22, a first slide rail 23, a first slider 24, a clamping table support plate 25, and a lead screw drive motor 26;

[0027] The platform base 1 has base side plates 11 on both sides, and the two ends of the first lead screw 21 are axially connected to the base side plates 11; there are two first slide rails 23, which are respectively located on both sides of the first lead screw 21; the two first slide rails 23 are evenly parallel to the first lead screw 21.

[0028] The clamping table support plate 25 is provided with a first slider 24 at each of its four corners; the first slider 24 is sleeved on the first slide rail 23; the first nut 22 is fixed to the middle of the lower end face of the clamping table support plate 25 and is sleeved on the first lead screw 21.

[0029] The translation mechanism is a lead screw kinematic pair; the lead screw drive motor 26 is connected to the first lead screw 21 through a coupling; the lead screw drive motor 26 drives the first lead screw 21 to rotate, thereby realizing the linear translation of the clamping table bearing plate 25.

[0030] The bottom of the left clamping frame 3 is fixed to one side of the clamping platform bearing plate 25 by bolts; the bottom of the right clamping frame 4 is fixed to the other side of the clamping platform bearing plate 25 by bolts; that is, the lower ends of the left clamping frame 3 and the right clamping frame 4 are fixed to the two sides of the upper surface of the clamping platform bearing plate 25.

[0031] The left clamping platform 3 has a left support plate 31 on one side of its upper end, and a left clamping part 32 on the side of the left support plate 31. The left clamping part 32 has a left polygonal clamping opening. The upper surface of the left support plate 31 also has two auxiliary frame fixing holes 33, and the midpoints of the two auxiliary frame fixing holes 33 intersect on the normal line of the left clamping part 32.

[0032] The bottom of the right clamping platform 4 is a lower support plate 41, the middle part of the right clamping platform 4 is a U-shaped support frame 42, and the top of the right clamping platform 4 is an upper support plate 43; the lower support plate 41, the U-shaped support frame 42, and the upper support plate 43 are connected and fixed in sequence; in this technical solution, the lower support plate 41, the U-shaped support frame 42, and the upper support plate 43 can be fixed and connected from bottom to top by bolts or welding;

[0033] The second translation mechanism is mounted on the support plate 43 on the platform; the right support plate 6 is mounted on the second translation mechanism.

[0034] The second translation mechanism includes: a second slide rail 51, a second slider 52, a lead screw shaft connector 53, a lead screw nut 54, a second lead screw 55, a lead screw torsion cap 56, and a lead screw wrench 57.

[0035] The second slide rail 51 is provided with two rails, which are fixed in parallel to the upper end face of the support plate 43 on the platform.

[0036] The upper end face of the right support plate 6 is on the same plane as the upper end face of the left support plate 31; the lower end face of the right support plate 6 is provided with a second slider 52 on both sides, and the two second sliders 52 are respectively sleeved on the second slide rail 51.

[0037] The right support plate 6 has a right clamping part 61 on one side, and the right clamping part 61 has a right polygonal clamping opening; the left polygonal clamping opening can be connected with the right polygonal clamping opening to form a regular hexagonal safety wheel tail column clamping opening; the other side of the upper end face of the right support plate 6 has two pin slide grooves 62; the midpoints of the two pin slide grooves 62 intersect on the normal line of the right clamping part 61;

[0038] The lead screw shaft connector 53 is fixed in the middle of the lower end face of the right support plate 6; the lead screw nut 54 is fixed on the support plate 43 of the frame; one end of the second lead screw 55 is shaft connected to the lead screw shaft connector 53; the threaded rod of the second lead screw 55 is sleeved on the lead screw nut 54; the lead screw torsion cap 56 is provided at the other end of the second lead screw 55.

[0039] The lead screw torsion cap 56 is provided with a plurality of wrench sleeve holes 561, and the axis of the plurality of wrench sleeve holes 561 is located on the normal line of the lead screw torsion cap 56.

[0040] One end of the lead screw wrench 57 is a stepped shaft rod 571, and the other end of the lead screw wrench 57 is provided with a wrench ball cap 572; the stepped shaft rod 571 can be fitted into any one of the wrench rod sleeve holes 561.

[0041] The drilling positioning frame 7 is a Z-shaped bracket. The lower end of the drilling positioning frame 7 is provided with a first positioning foot 71 and a second positioning foot 72 respectively. Below the first positioning foot 71, there are two first positioning pins 711, which can be respectively sleeved in two auxiliary frame fixing holes 33. Below the second positioning foot 72, there are two second positioning pins 721, which can be respectively sleeved in two pin rod sliding grooves 62.

[0042] The drilling positioning frame 7 is provided with a safety wheel tail column sleeve 73 at the lower middle part; two positioning drill holes 74 are provided above the safety wheel tail column sleeve 73; each positioning drill hole 74 is provided with an annular drill bit sleeve 75; the annular drill bit sleeve 75 is fixed to the positioning drill hole 74 by screws.

[0043] The axis of the annular drill bit sleeve 75 coincides with the axis of the positioning drill hole 74.

[0044] How to use:

[0045] This technical solution provides a safety wheel drilling fixture, suitable for use on a bench drill 9 controlled by a PLC (Programmable Logic Controller); see appendix. Figure 6 and attached Figure 8 The usage is illustrated in the figures and examples:

[0046] 1. First, fix the safety wheel drilling fixture in this technical solution below the electric spindle 91 of the drilling machine;

[0047] 2. Place the safety wheel tail column 8 between the left clamping part 32 and the right clamping part 61; the left clamping part 32 and the right clamping part 61 form a regular hexagonal safety wheel tail column clamping opening; the right clamping part 61 is rotated by the screw wrench 57, and the right support plate 6 is rotated by the second screw 55 to move towards the left clamping part 32; the regular hexagonal safety wheel tail column clamping opening clamps the safety wheel tail column 8, and there are 6 contact clamping points on the rotating body of the safety wheel tail column 8 and the full wheel tail column clamping opening; the drilling positioning frame 7 is sleeved on top of the safety wheel tail column 8;

[0048] 3. The drill bit of the electric spindle 91 of the drilling machine is first aligned with the axis of the first annular drill bit sleeve 75, and then the first drilling operation is performed; after the opening of the first tailstock threaded hole 81 is completed;

[0049] 4. Start the lead screw drive motor 26. The lead screw drive motor 26 drives the safety wheel tail column 8 to move horizontally until the axis of the second annular drill bit sleeve 75 is aligned with the drill bit axis of the drill machine electric spindle 91; then perform the second drilling operation; at this time, the opening of the threaded hole of the second tail column hole is completed.

[0050] 5. After the two tailstock threaded holes are opened, the drilling positioning frame 7 is removed from the safety wheel tailstock 8, the second lead screw 55 is rotated to release the clamping of the right support plate 6 on the safety wheel tailstock 8, and the safety wheel tailstock 8 is taken out from the safety wheel drilling fixture.

[0051] 6. After completing the drilling of the threaded hole of the tail post 8 of one safety wheel, repeat steps 2-5 above when drilling the threaded hole of the tail post 8 of the next safety wheel.

Claims

1. A safety wheel drilling tool comprising: The utility model relates to a kind of drilling jig, including gantry base (1), first translation mechanism, left clamping gantry (3), right clamping gantry (4), second translation mechanism, right supporting plate (6), drilling positioning frame (7);Its characterized in that: the gantry base (1) is fixed below electric main shaft of drilling machine;First translation mechanism is arranged on gantry base (1);First translation mechanism is equipped with clamping platform bearing plate (25);Left clamping gantry (3) and right clamping gantry (4) lower end are fixed on the upper end surface of clamping platform bearing plate (25) two sides;Left clamping gantry (3) upper end one side is equipped with left supporting plate (31), and left supporting plate (31) side is equipped with left clamping part (32);Right supporting plate (6) is arranged on right clamping gantry (4) by second translation mechanism;Right supporting plate (6) one side is equipped with right clamping part (61);Left clamping part (32) and right clamping part (61) support safety wheel tail column, drilling positioning frame (7) lower end two positioning feet, drilling positioning frame (7) middle part lower side is equipped with safety wheel tail column sleeve mouth (73), and safety wheel tail column sleeve mouth (73) is sleeved on safety wheel tail column;Safety wheel tail column sleeve mouth (73) upper side is equipped with 2 positioning drill holes (74);Drilling machine drill bit is passed through 2 positioning drill holes (74) and is obtained tail column hole thread hole.

2. The safety wheel drilling tool of claim 1, wherein: The first translation mechanism and the second translation mechanism are both screw motion pairs.

3. A safety wheel drilling tool according to claim 2, characterised in that: The first translation mechanism comprises a first screw rod (21), a first nut (22), a first sliding rail (23), a first sliding block (24) and a screw rod driving motor (26), the gantry base (1) is provided with base side plates (11) on both sides, two first sliding rails (23) are arranged in parallel between the base side plates (11) on both sides, and the first screw rod (21) is arranged between the two first sliding rails (23); the screw rod driving motor (26) is connected with the first screw rod (21) through a shaft coupling; the clamping platform bearing plate (25) is provided with the first sliding block (24) at four corners; the first sliding block (24) is sleeved on the first sliding rail (23); the first nut (22) is fixed to the middle part of the lower end surface of the clamping platform bearing plate (25), and the first nut (22) is sleeved on the first screw rod (21); the screw rod driving motor (26) drives the clamping platform bearing plate (25) to linearly translate on the first sliding rail (23).

4. The safety wheel drilling tool of claim 3, wherein: The right clamping gantry (4) comprises a gantry lower support plate (41), a U-shaped support frame (42) and a gantry upper support plate (43), which are sequentially and fixedly connected from bottom to top.

5. A safety wheel drilling tool according to claim 4, characterised in that: The second translation mechanism comprises a second sliding rail (51), a second sliding block (52), a screw shaft connector (53), a screw nut connector (54), a second screw shaft (55), a screw shaft wrench (56) and a screw wrench (57). The second sliding rail (51) is provided with two second sliding rails (51) which are fixed on the upper end surface of the support plate (43) of the rack in parallel. The screw nut connector (54) is fixed between the two second sliding rails (5). The lower end surface of the right supporting plate (6) is provided with two second sliding blocks (52) on both sides. The two second sliding blocks (52) are respectively sleeved on the second sliding rail (51). The screw shaft connector (53) is fixed on one side of the right supporting plate (6). The screw shaft (55) is connected with the screw shaft connector (53) at one end. The threaded rod of the second screw shaft (55) is sleeved on the screw nut connector (54). The screw shaft wrench (56) is arranged at the other end of the second screw shaft (55). The screw shaft wrench (56) is provided with a wrench rod sleeve hole (561). The screw wrench (57) can be sleeved in the wrench rod sleeve hole (561). The second screw shaft (55) is driven to rotate by the screw wrench (57) to drive the right supporting plate (6) to linearly translate on the second sliding rail (51).

6. A safety wheel drilling tool according to claim 5, wherein: The upper end of the left clamping rack (3) is provided with a left supporting plate (31). The left supporting plate (31) is provided with a left clamping part (32) on the side. The right supporting plate (6) is provided with a right clamping part (61) on one side. The left clamping part (32) and the right clamping part (61) are arranged opposite to each other. The left clamping part (32) and the right clamping part (61) are connected to form a safety wheel tail column clamping opening.

7. A safety wheel drilling tool according to claim 6, characterised in that: The upper end surface of the left supporting plate (31) is provided with two auxiliary frame fixing holes (33). The upper end surface of the right supporting plate (6) is provided with two pin rod sliding grooves (62). The midpoint between the two auxiliary frame fixing holes (33) and the midpoint between the two pin rod sliding grooves (62) intersect on the same normal line of the safety wheel tail column clamping opening.

8. A safety wheel drilling tool according to claim 7, characterised in that: The drilling positioning frame (7) is a few character-shaped supports. The lower end of the drilling positioning frame (7) is respectively provided with a first positioning foot (71) and a second positioning foot (72). The lower end of the first positioning foot (71) is provided with two first positioning pins (711) which can be respectively sleeved in the two auxiliary frame fixing holes (33). The lower end of the second positioning foot (72) is provided with two second positioning pins (721) which can be respectively sleeved in the two pin rod sliding grooves (62).

9. A safety wheel drilling tool according to claim 8, characterised in that: Each positioning drilling hole (74) is provided with an annular drill bit sheath (75). The axis of the annular drill bit sheath (75) coincides with the axis of the positioning drilling hole (74).

Images