CN218425754U - Automobile sensor shell machining device - Google Patents

Abstract

The utility model belongs to the technical field of sensor housing processing, specifically be an automobile sensor housing processingequipment, including base, transport mechanism is in the base middle level, the base upper strata is equipped with drilling mechanism, the transport mechanism both sides are equipped with rotary mechanism, the utility model discloses a machining has solved the required hole machining efficiency of sensor housing and has hanged down, can not be used for the not problem of the sensor housing processing regulation of equidimension model size.

Description

Automobile sensor shell machining device

Technical Field

The utility model belongs to the technical field of sensor housing processing, especially, relate to an automobile sensor housing processingequipment.

Background

In our life that social sensor has generally been applied to at present, need carry out drilling processing to sensor housing, so that the installation of other parts or the access of electric wire, the multi-purpose drilling machine of current sensor housing processing comes out required hole processing, but not only machining efficiency is low and need accomplish very inconveniently and inefficiency through artificial mode when the machined part change of equidimension not through this kind of mode, and to columniform sensor housing, the drilling machine is less because of the clamping face, thereby it rocks error very easily to produce, also there is some processing modes through changing injection mold, directly accomplish required hole injection molding, but the precision of this kind of mode is very coarse.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide an automobile sensor shell processingequipment.

The utility model discloses a realize above-mentioned purpose, provide following technical scheme: the utility model provides an automobile sensor shell processingequipment, includes base, transport mechanism is in the base middle level, the base upper strata is equipped with drilling mechanism, the transport mechanism both sides are equipped with rotary mechanism, rotary mechanism includes first casing, first casing and base fixed connection, first casing one side is fixed with first motor, first motor output shaft is fixed with first rotation post, first rotation post and first casing normal running fit, first rotation post is fixed with first connecting rod, first rotation post one end is kept away from to first connecting rod articulates there is the second connecting rod, first connecting rod one end is kept away from to the second connecting rod articulates there is cylindrical rack, cylindrical rack is fixed with first cylinder, first spout has been seted up to first casing, first cylinder and first spout sliding fit, cylindrical rack toothing has first gear, first gear center department is fixed with the second cylinder, the second spout has been seted up to first casing, second cylinder and second spout sliding fit, second cylinder upper end is equipped with adjustment mechanism.

Preferably, the adjusting mechanism comprises a second motor, a third chute is formed in the base, a second cylinder is in sliding fit with the third chute, the base is provided with a first sliding plate, the upper surface of the first sliding plate is provided with a first rotating wheel, the second cylinder penetrates through the first sliding plate and is fixedly connected with the first rotating wheel, one side of the first sliding plate is provided with a first tooth groove, the first tooth groove is meshed with a second gear, a first supporting plate is fixed on one side of the first shell, the second motor is fixedly connected with the upper surface of the first supporting plate, an output shaft of the second motor is fixedly connected with the second gear, and a clamping mechanism is arranged at the parallel position of the first rotating wheel.

As preferred, fixture includes the third motor, third motor and base fixed connection, third motor output shaft is fixed with the second dwang, the base is fixed with the second backup pad, second dwang and second backup pad normal running fit, the second dwang is fixed with the sixth gear, sixth gear engagement has first rack, first sliding tray has been seted up to the base, first rack and first sliding tray normal running fit, first rack upper surface is fixed with the second base, the second base is fixed with first spring, second base one end is fixed with the second transfer line is kept away from to first spring, the first spring one end is kept away from to the second transfer line and is fixed with first connecting piece, first connecting piece both sides are equipped with the third connecting rod, the third connecting rod is articulated with first connecting piece, first connecting piece one end is kept away from to the third connecting rod and is equipped with the clamping jaw, the clamping jaw is articulated with the third connecting rod, keep away from third connecting rod one end and is articulated with the second base, be equipped with the second runner on the clamping jaw, second runner and clamping jaw normal running fit.

Preferably, the transmission mechanism includes a fourth motor and a transmission belt, the fourth motor is fixed to the base, an output shaft of the fourth motor penetrates through the base and is fixed with a third gear, the third gear is in running fit with the base, the third gear is meshed with a second rack, the second rack is in sliding fit with the base, one end, away from the third gear, of the second rack is hinged to a fourth connecting rod, one end, away from the second rack, of the fourth connecting rod is fixed with a guide pillar, the transmission belt is arranged on the inner side of the guide pillar, a third cylinder is fixed to the fourth connecting rod, a guide rod is fixed to the base, a fourth chute is formed in the guide rod, and the third cylinder is in sliding fit with the fourth chute. Preferably, the drilling mechanism comprises a fifth motor, the fifth motor is fixedly connected with the base, a lead screw is fixed on an output shaft of the fifth motor, one end, far away from the fifth motor, of the lead screw is in running fit with the base, a second plate is arranged on the lead screw in a threaded manner, second guide rods are arranged on two sides of the second plate and are in sliding fit with the second guide rods, a third plate is symmetrically and fixedly arranged at the lower end of the second plate, a sixth motor is fixed on one side of the third plate, an output shaft of the sixth motor penetrates through the third plate on one side and is fixed with a fourth gear, the fourth gear is in running fit with the third plate, a third rack is meshed with the fourth gear, the third rack is slidably arranged between the third plates, a fourth plate is fixed at the lower end of the third rack, a seventh motor is fixed on the upper surface of the fourth plate, and a drill bit is fixed on the seventh motor output shaft of the fourth plate.

To sum up, the utility model has the advantages that:

the utility model discloses a set up transmission device, through the guide pillar in the transport mechanism, promote the cylindrical machined part that the conveyer belt brought to conveyer belt center pin region, it provides more accurate position to cooperate the centre gripping between follow-up rotary mechanism and fixture to be convenient for, simultaneously can carry out the regulation through the width of mechanism setting between the guide pillar, be applicable to the processing pipe fitting of different diameters size and adjust, set up the second runner to the fixture both ends simultaneously, the setting of second runner will be faster carry out the centre gripping to cylindrical pipe fitting and can not interfere to the required rotation of follow-up rotary mechanism simultaneously.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the schematic view of the whole structure of the rotating mechanism and the adjusting mechanism of the present invention.

Fig. 3 is a cross-sectional view of the rotating mechanism and the adjusting mechanism of the present invention.

Fig. 4 is a schematic view of the positions of the rotating mechanism and each part of the adjusting mechanism of the present invention.

Fig. 5 is a schematic structural view of the clamping mechanism of the present invention.

Fig. 6 is a bottom view of the clamping mechanism of the present invention.

Fig. 7 is a schematic structural view of the conveying mechanism of the present invention.

Fig. 8 is a schematic view of the drilling mechanism of the present invention.

Fig. 9 is a sectional view of the drilling mechanism of the present invention.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description. Referring to fig. 1-4, an automobile sensor housing processing device includes a base 1, a transmission mechanism 2, rotation mechanisms 4 are disposed on two sides of the transmission mechanism 2, each rotation mechanism 4 includes a first housing 5, the first housing 5 is fixedly connected with the base 1, a first motor 6 is fixed on one side of the first housing 5, a first rotation column 7 is fixed on an output shaft of the first motor 6, the first rotation column 7 is in rotation fit with the first housing 5, a first connection rod 8 is fixed on the first rotation column 7, the first connection rod 8 is arranged to transmit a force in a rotation direction to a second connection rod 57, a second connection rod 57 is hinged to one end of the first connection rod 8 away from the first rotation column 7, a cylindrical rack 9 is hinged to one end of the second connection rod 57 away from the first connection rod 8, and the second connection rod 57 is used in cooperation with the cylindrical rack 9 to convert a rotation force generated by the first motor 6 into a force of horizontal movement.

Referring to fig. 1-4, a first cylinder 10 is fixed on a cylindrical rack 9, a first chute 11 is formed in the first housing 5, the first cylinder 10 is in sliding fit with the first chute 11, the first cylinder 10 cooperates with the first chute 11 to limit a horizontal plane of movement of the first rack 28, the cylindrical rack 9 is engaged with a first gear 12, the first gear 12 cooperates with the cylindrical rack 9 to convert a force of movement in a horizontal direction into a rotational force in a vertical direction, a second cylinder 13 is fixed at a center of the first gear 12, a second chute 14 is formed in the first housing 5, the second cylinder 13 cooperates with the second chute 14 in a sliding manner, and an adjusting mechanism 15 is arranged at an upper end of the second cylinder 13.

Referring to fig. 1-4, the adjusting mechanism 15 includes a second motor 16, the base 1 has a third sliding slot 17, the second cylinder 13 is slidably engaged with the third sliding slot 17, the base 1 has a first sliding plate 18, a first rotating wheel 19 is disposed on the upper surface of the first sliding plate 18, and the first rotating wheel 19 is disposed to facilitate the rotation of the cylindrical sensor housing under the state of being engaged with the clamping mechanism 23 to complete the processing from line to plane.

Referring to fig. 1-4, a second cylinder 13 penetrates through a first sliding plate 18 and is fixedly connected with a first rotating wheel 19, the second cylinder 13 is arranged to transmit a rotating force generated at the bottom to the first rotating wheel 19 to enable the first rotating wheel to rotate, a first tooth space 20 is formed in one side of the first sliding plate 18, a second gear 21 is meshed with the first tooth space 20, a first supporting plate 22 is fixed on one side of a first shell 5, a second motor 16 is fixedly connected with the upper surface of the first supporting plate 22, an output shaft of the second motor 16 is fixedly connected with the second gear 21, the rotating force generated by the second motor 16 is converted into horizontal movement through matching between the second gear 21 and the first tooth space 20, so that the distance between the first rotating wheel 19 and a central shaft of a transmission belt 39 can be conveniently adjusted, the sensor housing with different diameters can be processed, and a clamping mechanism 23 is arranged at a position parallel to the first rotating wheel 19.

Referring to fig. 5-6, the clamping mechanism 23 includes a third motor 24, the third motor 24 is fixedly connected to the base 1, a second rotating rod 25 is fixed to an output shaft of the third motor 24, the base 1 is fixed with a second supporting plate 26, the second rotating rod 25 is rotatably matched with the second supporting plate 26, a sixth gear 27 is fixed to the second rotating rod 25, the sixth gear 27 is meshed with a first rack 28, the base 1 is provided with a first sliding groove 29, the first rack 28 is slidably matched with the first sliding groove 29, a second base 30 is fixed to the upper surface of the first rack 28, the second base 30 is fixed with a first spring 31, and the clamping jaw 36 has a tendency to be clamped in the middle through the arrangement of the first spring 31, so that the clamping jaw fits the sensor housing more.

Referring to fig. 5-6, a second transmission rod 32 is fixed at one end of the first spring 31, which is far away from the second base 301, a first connecting member 33 is fixed at one end of the second transmission rod 32, which is far away from the first spring 31, a third connecting rod 35 is arranged on both sides of the first connecting member 33, the third connecting rod 35 is hinged to the first connecting member 33, a clamping jaw 36 is arranged at one end of the third connecting rod 35, which is far away from the first connecting member 33, the clamping jaw 36 is hinged to the third connecting rod 35, one end of the clamping jaw 36, which is far away from the third connecting rod 35, is hinged to the second base 301, a second rotating wheel 37 is arranged on the clamping jaw 36, the second rotating wheel 37 is arranged on the clamping jaw 36 to cooperate with the first rotating wheel 19, so as to rotate in a clamping state, and the second rotating wheel 37 is rotatably engaged with the clamping jaw 36.

Referring to fig. 1 and 7, the conveying mechanism 2 is located in the middle layer of the base 1, the conveying mechanism 2 includes a fourth motor 38 and a transmission belt 39, the fourth motor 38 is fixed to the base 1, an output shaft of the fourth motor 38 penetrates through the base 1 and is fixed with a third gear 40, the third gear 40 is in rotating fit with the base 1, the third gear 40 is meshed with a second rack 41, the second rack 41 is in sliding fit with the base 1, one end of the second rack 41, which is far away from the third gear 40, is hinged with a fourth connecting rod 42, one end of the fourth connecting rod 42, which is far away from the second rack 41, is fixed with a guide pillar 43, through the arrangement of the guide pillar 43, when a workpiece is initially conveyed, the workpiece is guided to the central shaft of the transmission belt 39, so that the subsequent clamping mechanism 23 and the rotating mechanism 4 are more accurately clamped, and after the clamping is completed, the guide pillar 43 is moved to the central shaft of the transmission belt 39 by starting adjustment of the fourth motor 38, so that the clamping of the upper part of the workpiece is completed, and the clamping is more stable. The transmission belt 39 is arranged on the inner side of the guide post 43, the fourth connecting rod 42 is fixed with the third cylinder 44, the base 1 is fixed with the guide rod 58, the guide rod 58 is provided with the fourth sliding groove 45, the third cylinder 44 is in sliding fit with the fourth sliding groove 45, and the matching arrangement of the third cylinder 44 and the fourth sliding groove 45 limits the movement track of the guide post 43 to enable the guide post to move along a required path.

Referring to fig. 1 and 8-9, a drilling mechanism 3 is arranged on the upper layer of a base 1, the drilling mechanism 3 includes a fifth motor 46, the fifth motor 46 is fixedly connected with the base 1, an output shaft of the fifth motor 46 is fixed with a lead screw 47, one end of the lead screw 47, which is far away from the fifth motor 46, is in running fit with the base 1, a second plate 48 is arranged on the lead screw 47 in a threaded manner, second guide rods 49 are arranged on two sides of the second plate 48, the second plate 48 is in sliding fit with the second guide rods 49, third plates 50 are symmetrically and fixedly arranged at the lower end of the second plate 48, a sixth motor 51 is fixed on the third plate 50 on one side, an output shaft of the sixth motor 51 penetrates through the third plate 50 on one side and is fixed with a fourth gear 52, the fourth gear 52 is in running fit with the third plate 50, a third rack 53 is meshed with the fourth gear 52, the third rack 53 is slidably arranged between the third plates 50, a fourth plate 54 is fixed at the lower end of the third rack 53, a seventh motor 55 is fixed on the upper surface of the fourth plate 54, and an output shaft of the seventh motor 55 penetrates through the fourth plate 54 and is fixed with a drill 56.

The utility model discloses a theory of operation and use flow:

when the cylindrical sensor shell is machined, a workpiece is placed on the transmission belt 39, the fourth motor 38 is started, the fourth motor 38 rotates to drive the third gear 40 to rotate, the third gear 40 rotates to drive the second rack 41 to move towards two sides of the base 1, the second rack 41 moves to drive the fourth connecting rod 42 to rotate around a hinge point with the second rack 41, the fourth connecting rod 42 moves to drive the third cylinder 44 to slide in the fourth sliding groove 45, meanwhile, the fourth connecting rod 42 moves to drive the guide pillar 43 to move towards the central axis direction of the transmission belt 39, the two sides of the workpiece are adjusted to slightly touch the workpiece, the fourth motor 38 is stopped, the transmission belt 39 is started, the workpiece is conveyed to the central axis position of the clamping mechanism 23, the movement of the transmission belt 39 is stopped, the fourth motor 38 is continuously started, and the third gear 40 is used. The second rack 41 is moved to both sides of the base 1, and the second rack 41 moves to drive the guide post 43 to further move towards the central axis of the transmission belt 39, so as to clamp the upper part of the workpiece.

And starting the second motor 16, rotating the second motor 16 to drive the second gear 21 to rotate, rotating the second gear 21 to drive the first sliding plate 18 to move, moving the first sliding plate 18 to drive the first rotating wheel 19 to move towards the central shaft direction of the transmission belt 39, moving the first rotating wheel 19 to the position where the first rotating wheel 19 is contacted with a workpiece, and stopping the second motor 16. The third motor 24 is started, the third motor 24 drives the second rotating rod 25 to rotate, the second rotating rod 25 drives the sixth gear 27 to rotate, the sixth gear 27 rotates to drive the first rack 28 to horizontally move on the base 1, the first rack 28 moves to drive the second base 30 to move, the second base 30 moves to drive the clamping jaw 36 to move towards the central shaft direction of the transmission belt 39, the clamping jaw 36 moves to drive the second rotating wheel 37 to horizontally move, when the second rotating wheel 37 contacts with a workpiece, the third motor 24 continues to operate, axial supporting force is provided through the first rotating wheel 19, the second rotating wheel 37 moves along two sides of the workpiece, the second rotating wheel 37 moves to drive the clamping jaw 36 to rotate around a hinged point with the second base 30, the clamping jaw 36 rotates to drive the third connecting rod 35 to move towards the central shaft direction of the second base 30, the third connecting rod 35 moves to drive the first connecting piece 33, and the first connecting piece 33 moves to drive the first spring 31 to compress.

After clamping is completed, the fifth motor 46 is started, the fifth motor 46 drives the lead screw 47 to rotate, the lead screw 47 rotates to drive the second plate 48 to move horizontally, the second plate 48 moves to convey the drill 56 to the position above the hole to be machined, the sixth motor 51 is started, the sixth motor 51 drives the fourth gear 52 to rotate, the fourth gear 52 rotates to drive the third rack 53 to move downwards, the third rack 53 moves to drive the fourth plate 54 to move, the fourth plate 54 moves to drive the drill 56 to descend, meanwhile, the seventh motor 55 is started, the seventh motor 55 drives the drill 56 to rotate, the fourth plate 54 continues to descend to drive the drill 56 to complete drilling, after drilling is completed, the sixth motor 51 rotates reversely to enable the fourth plate 54 to drive the drill 56 to move upwards, the lead screw 47 is driven by the fifth motor 46 to rotate, the position of the second plate 48 is adjusted, and the above-mentioned motions are repeated to complete machining of the hole on the axis. After the axis machining is completed, the fourth motor 38 is moved in the reverse direction, so that the clamping force above disappears, then the first motor 6 is started, the first motor 6 drives the first rotating column 7 to rotate, the first rotating column 7 rotates to drive the first connecting rod 8 to rotate, the first connecting rod 8 rotates to drive the second connecting rod 57 to move, the second connecting rod 57 moves to drive the cylindrical rack 9 to move, the cylindrical rack 9 moves to drive the first cylinder 10 to slide in the first sliding groove 11, the first cylinder 10 slides to enable the cylindrical rack 9 to only move horizontally, the cylindrical rack 9 moves to drive the first gear 12 to rotate, the first gear 12 rotates to drive the second cylinder 13 to rotate, the second cylinder 13 rotates to drive the first rotating wheel 19 to rotate, the first rotating wheel 19 is matched with the second rotating wheel 37 to rotate the machined part, after the required position is rotated, the fourth motor 38 is started to complete the clamping above, the drilling step is repeated, and the machining from the axis to the surface is completed through the steps.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or system comprising the element.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims (5)

1. The utility model provides an automobile sensor shell processingequipment, includes base (1), its characterized in that still includes transmission device (2), transmission device (2) are in base (1) middle level, base (1) upper strata is equipped with drilling mechanism (3), transmission device (2) both sides are equipped with rotary mechanism (4), rotary mechanism (4) include first casing (5), first casing (5) and base (1) fixed connection, first casing (5) one side is fixed with first motor (6), first motor (6) output shaft is fixed with first rotation post (7), first rotation post (7) and first casing (5) normal running fit, first rotation post (7) is fixed with first connecting rod (8), first rotation post (7) one end is kept away from in first connecting rod (8) and is articulated to have second connecting rod (57), second connecting rod (57) keep away from first connecting rod (8) one end and articulate and have cylindrical rack (9), cylindrical rack (9) are fixed with first cylinder (10), first casing (5) one end has seted up first casing (5) first cylinder (11), first spout (11) sliding fit (11), first cylinder (11) meshing, a second cylinder (13) is fixed at the center of the first gear (12), a second sliding groove (14) is formed in the first shell (5), the second cylinder (13) is in sliding fit with the second sliding groove (14), and an adjusting mechanism (15) is arranged at the upper end of the second cylinder (13).

2. The automobile sensor housing processing device according to claim 1, wherein the adjusting mechanism (15) includes a second motor (16), the base (1) has a third sliding slot (17), the second cylinder (13) is slidably engaged with the third sliding slot (17), the base (1) has a first sliding plate (18), the first sliding plate (18) has a first rotating wheel (19) on its upper surface, the second cylinder (13) penetrates through the first sliding plate (18) and is fixedly connected with the first rotating wheel (19), the first sliding plate (18) has a first tooth space (20) on one side, the first tooth space (20) is engaged with a second gear (21), the first support plate (22) is fixed on one side of the first housing (5), the second motor (16) is fixedly connected with the upper surface of the first support plate (22), the output shaft of the second motor (16) is fixedly connected with the second gear (21), and a clamping mechanism (23) is disposed at a position parallel to the first rotating wheel (19).

3. The automobile sensor housing processing device according to claim 2, wherein the clamping mechanism (23) comprises a third motor (24), the third motor (24) is fixedly connected with the base (1), a second rotating rod (25) is fixed to an output shaft of the third motor (24), the base (1) is fixed with a second support plate (26), the second rotating rod (25) is in rotating fit with the second support plate (26), a sixth gear (27) is fixed to the second rotating rod (25), a first rack (28) is meshed with the sixth gear (27), a first sliding groove (29) is formed in the base (1), the first rack (28) is in sliding fit with the first sliding groove (29), a second base (30) is fixed to an upper surface of the first rack (28), a first spring (31) is fixed to the second base (30), a second transmission rod (32) is fixed to one end of the first spring (31) far away from the second base (30), a first connecting rod (33) is fixed to one end of the second spring (32), a third connecting piece (35) is arranged on two sides of the first connecting rod (33), and a third connecting piece (35) is hinged to the first connecting piece (33), the clamping jaw (36) is hinged to the third connecting rod (35), one end, far away from the third connecting rod (35), of the clamping jaw (36) is hinged to the second base (30), a second rotating wheel (37) is arranged on the clamping jaw (36), and the second rotating wheel (37) is matched with the clamping jaw (36) in a rotating mode.

4. The processing device of the automobile sensor housing according to claim 1, wherein the transmission mechanism (2) includes a fourth motor (38) and a transmission belt (39), the fourth motor (38) is fixed to the base (1), an output shaft of the fourth motor (38) penetrates through the base (1) and is fixed with a third gear (40), the third gear (40) is in rotating fit with the base (1), the third gear (40) is engaged with a second rack (41), the second rack (41) is in sliding fit with the base (1), one end of the second rack (41) away from the third gear (40) is hinged with a fourth connecting rod (42), one end of the fourth connecting rod (42) away from the second rack (41) is fixed with a guide pillar (43), the transmission belt (39) is arranged inside the guide pillar (43), the fourth connecting rod (42) is fixed with a third cylinder (44), the base (1) is fixed with a guide rod (58), the guide rod (58) is provided with a fourth sliding groove (45), and the third cylinder (44) is in sliding fit with a sliding groove (45).

5. The automobile sensor housing processing device according to claim 1, wherein the drilling mechanism (3) comprises a fifth motor (46), the fifth motor (46) is fixedly connected with the base (1), a lead screw (47) is fixed to an output shaft of the fifth motor (46), one end of the lead screw (47) far away from the fifth motor (46) is rotatably matched with the base (1), a second plate (48) is arranged on the lead screw (47) in a threaded manner, second guide rods (49) are arranged on two sides of the second plate (48), the second plate (48) is slidably matched with the second guide rods (49), a third plate (50) is symmetrically fixed to the lower end of the second plate (48), a sixth motor (51) is fixed to one side of the third plate (50), a fourth gear (52) is fixed to an output shaft of the sixth motor (51) through the third plate (50) on one side, the fourth gear (52) is rotatably matched with the third plate (50) and is engaged with a third rack (53), a seventh gear (54) is fixed to the third rack (53) between the third plate (50) and a fourth rack (54) is fixed to the upper end of the third plate (54), and a drill bit (55) is fixed to the third plate (54), and a seventh rack (54) and a seventh motor (55) is fixed to the upper end of the third plate (54), and a third plate (54) and a drill bit (54) and is fixed between the third plate (54), and a third plate (54) and a seventh plate (54) and a third plate (54) and a drill is fixed to the third plate (54), and a drill is fixed to the fourth plate (54), and a drill ).

Images