CN115415818A - Drilling tool and clamp thereof - Google Patents

Abstract

The application relates to a drilling tool and a clamp thereof, belonging to the technical field of drilling tools, wherein the clamp of the drilling tool comprises a base, a clamp sleeve arranged on the base in a sliding manner and a lead screw arranged on the base in a rotating manner; one side of the tool shank of the drilling tool, which is close to the screw rod, is provided with a screw hole which can be in threaded fit with the screw rod; a rotating mechanism for providing power for the screw rod is arranged on the base; the base is rotatably provided with a transmission gear, a first rotating gear and a second rotating gear which are respectively meshed with the transmission gear; a transmission shaft is coaxially and fixedly connected to one side of the first rotating gear, which is close to the drilling tool; a transmission pipe is fixedly connected to one side of the second rotating gear, which is far away from the drilling tool; connecting discs are fixed at the ends, close to the drilling tool, of the transmission shaft and the transmission pipe, and one side, far away from the drilling tool, of the screw rod is connected with a transmission cylinder capable of being in sliding fit with the connecting discs in a sliding mode. The drilling tool comprises a tool bit and a tool handle which are integrally formed. The drilling tool has the effect that the drilling tool can automatically back up when meeting a blockage.

Description

Drilling tool and clamp thereof

Technical Field

The present application relates to the field of drilling tools, and more particularly, to a drilling tool and a holder therefor.

Background

When the drilling machine drills a hole on the mechanical cutter, the mechanical cutter needs to be clamped by the clamp, and the position of the mechanical cutter is prevented from changing during machining.

The related technology can refer to Chinese patent application with an authorization publication number of CN111251002A, and discloses a drilling tool and a fixture thereof, wherein the drilling tool comprises a base, a first support plate is fixedly welded on the top of the base, a first fixing plate is fixedly welded on the top of the first support plate, a lead screw is sleeved in a through hole in the top of the first fixing plate, a second fixing plate is fixedly connected with a screw in the top of the base and positioned below the lead screw, a cylindrical groove is formed in the top of the second fixing plate and positioned right below the lead screw, the bottom of the lead screw is inserted into the inner wall of the cylindrical groove, a nut is connected with a spiral surface of the lead screw in a threaded manner, a first connecting plate is fixedly connected with a front screw of the nut, a first through hole is formed between the top of the first connecting plate and the bottom of the first connecting plate, a second motor is fixedly connected with the screw in the top of the first connecting plate and positioned above the first through hole, a first drilling coupling is fixedly connected with an output end of the second motor and positioned in the first through fixing ring in a fixing sleeve, and a drilling tool is fixedly connected with the inner wall of the coupling end, which is far away from one end of the second motor, and fixed with the fixing ring in a fixing sleeve.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: in the drilling process of the drilling tool, the problem that hard impurities exist in metal can be solved, at the moment, the metal tool cannot automatically stop advancing, and the metal tool continuously and rigidly collides with the impurities in the process of continuously advancing, so that a coating on the tool falls off.

Disclosure of Invention

In order to improve the problem that metal cutting tool meets and hinders unable automatic shutdown at drilling in-process, this application provides a drilling cutter and anchor clamps thereof.

The application provides a drilling tool's anchor clamps adopts following technical scheme:

a clamp of a drilling tool comprises a base, a clamp sleeve arranged on the base in a sliding mode and a lead screw arranged on the base in a rotating mode; one side of a tool shank of the drilling tool, which is close to the screw rod, is provided with a screw hole which can be in threaded fit with the screw rod; the base is provided with a rotating mechanism for providing power for the lead screw; the base is rotatably provided with a transmission gear, and a first rotating gear and a second rotating gear which are respectively meshed with the transmission gear; a transmission shaft is coaxially and fixedly connected to one side of the rotating gear I, which is close to the drilling tool; a transmission pipe is fixedly connected to one side of the second rotating gear, which is far away from the drilling tool; connecting discs are fixed at one ends of the transmission shaft and the transmission pipe, which are close to the drilling tool, and one side of the screw rod, which is far away from the drilling tool, is connected with a transmission cylinder which can be in sliding fit with the connecting discs in a sliding manner; and a connecting shaft is fixed on the clamp sleeve, and one end of the connecting shaft, which is far away from the clamp sleeve, is fixedly connected with the transmission cylinder.

By adopting the technical scheme, the first rotating gear and the second rotating gear are respectively meshed with the transmission gear, so that the first rotating gear and the second rotating gear are opposite in rotation direction. The rotation directions of the connecting discs fixedly connected with the first rotating gear and the second rotating gear are opposite. When the transmission cylinder is respectively matched with the two connecting discs, the self steering of the transmission cylinder can be changed. When the drilling tool is dug and cut in the metal and is blocked, the drilling tool in the advancing state can be withdrawn from the metal by changing the matching relationship between the transmission cylinder and the connecting disc, so that the possibility of rigid collision between the drilling tool and the metal is reduced.

Optionally, the rotating mechanism includes a motor fixed on the base; the first rotating gear is coaxially and fixedly connected with an output shaft of the motor.

By adopting the technical scheme, the motor provides power for the rotation of the first rotating gear and the second rotating gear, so that the two connecting discs are driven to rotate.

Optionally, a connecting lug is fixed at a position opposite to the outer peripheral surface of the connecting disc; a first circular groove is formed in the transmission cylinder; the transmission cylinder is positioned on two sides of the first circular groove and is respectively provided with a second circular groove; ear grooves are formed in the two peripheral sides of the circular groove; the connecting lug can be connected with the transmission cylinder in a sliding mode through the lug groove.

By adopting the technical scheme, when the connecting disc is positioned in the first circular groove, the connecting disc does not drive the transmission cylinder to rotate; when the connecting disc is positioned in the second circular groove, the connecting lug is clamped with the lug groove, so that the connecting disc drives the transmission cylinder to rotate;

optionally, a connecting hole is formed in one side, close to the drilling tool, of the transmission cylinder, and the lead screw is connected with the connecting hole in a sliding manner along the length direction of the base; the guide piece is fixed on the outer peripheral surface of one end, far away from the drilling tool, of the screw rod, and the inner wall of the connecting hole is provided with a guide groove which can be connected with the guide piece in a sliding mode.

Through adopting above-mentioned technical scheme, the guide way provides the guide effect for the guide plate to make lead screw and transmission cylinder keep synchronous rotation, sliding connection between lead screw and the transmission cylinder simultaneously.

Optionally, a sliding groove is formed in the base, and the base is connected with a connecting seat in a sliding manner along the length direction of the base through the sliding groove; the transmission cylinder penetrates through the connecting seat and is fixedly connected with the connecting seat.

Through adopting above-mentioned technical scheme, the driving cylinder passes through the connecting seat and slides and set up on the base, is convenient for through removing the driving cylinder, changes the relation of connection between driving cylinder and two connection pads to drive the driving cylinder through the connection pad and rotate to not equidirectional.

Optionally, a magnet assembly is arranged in the chute; the magnet assembly comprises two electromagnets arranged along the length direction of the base; magnetic attraction pieces which can be magnetically attracted with the electromagnets are respectively fixed on two sides of the connecting seat.

Through adopting above-mentioned technical scheme, the electro-magnet drives the connecting seat through adsorbing the magnetic chuck and removes, and then drives the transmission section of thick bamboo and remove.

Optionally, a variable resistance assembly is arranged in the chute; the varistor assembly comprises two sliding varistors arranged along the length direction of the base; the magnetic attraction piece is a slide sheet of the slide rheostat; the power supply, the electromagnet and the slide rheostat form a series circuit; the positive electrode of the power supply is electrically connected with the electromagnet, and the electromagnet is electrically connected with a binding post at one end of the slide rheostat far away from the electromagnet; the magnetic attraction piece is electrically connected with the negative electrode of the power supply.

By adopting the technical scheme, after the magnetic attraction piece moves, the electric contact point between the magnetic attraction piece and the slide rheostat is changed, so that the resistance value of the slide rheostat is changed, and after the resistance value of the slide rheostat is changed, the current value in a circuit connected with the slide rheostat in series is changed, so that the magnetism of the electromagnet is changed; along with the magnetic attraction piece moves to one side far away from the electromagnet, the magnetism of the electromagnet is gradually enhanced, and stronger attraction force is applied to the magnetic attraction piece.

The application provides a drilling tool adopts following technical scheme:

a drilling tool comprises a tool bit and a tool handle which are integrally formed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first rotating gear and the second rotating gear are meshed with the transmission gear respectively, so that the first rotating gear and the second rotating gear rotate in opposite directions. The rotation directions of the connecting discs fixedly connected with the first rotating gear and the second rotating gear are opposite. When the transmission cylinder is respectively engaged with the two connection plates, the rotation direction of the transmission cylinder itself is changed. When the drilling tool is dug and chiseled in the metal and is blocked, the drilling tool in the advancing state can be withdrawn from the metal by changing the matching relationship between the transmission cylinder and the connecting disc, so that the possibility of rigid collision between the drilling tool and the metal is reduced;

2. the transmission cylinder is arranged on the base in a sliding mode through the connecting seat, so that the connection relation between the transmission cylinder and the two connecting discs can be changed by moving the transmission cylinder, and the transmission cylinder is driven to rotate in different directions through the connecting discs; the electromagnet drives the connecting seat to move through the adsorption magnetic chuck, and then drives the transmission cylinder to move;

3. after the magnetic attraction piece moves, the electric contact point of the magnetic attraction piece and the slide rheostat is changed, so that the resistance value of the slide rheostat is changed, and after the resistance value of the slide rheostat is changed, the current value in a circuit connected with the slide rheostat in series is changed, so that the magnetism of the electromagnet is changed; along with the magnetic attraction piece moves to one side far away from the electromagnet, the magnetism of the electromagnet is gradually enhanced, and stronger attraction force is applied to the magnetic attraction piece.

Drawings

Fig. 1 is a schematic structural view of a holder of a drilling tool according to an embodiment of the present application.

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Reference numerals are as follows: 1. a cutter head; 11. a knife handle; 2. a base; 21. a clamp sleeve; 22. a lead screw; 23. a lead screw base; 24. a screw hole; 3. a rotating mechanism; 31. a motor; 32. a motor base; 33. a gear seat; 34. a connecting disc; 35. connecting lugs; 36. a transmission cylinder; 37. connecting holes; 4. a transmission assembly; 41. a transmission gear; 42. rotating the first gear; 43. rotating a second gear; 44. a drive shaft; 45. a transmission pipe; 46. a first circular groove; 47. a second circular groove; 48. an ear canal; 5. a connecting seat; 51. a chute; 52. a drive hole; 6. a magnet assembly; 61. an electromagnet; 62. a magnetic attraction sheet; 7. a varistor assembly; 71. a slide rheostat; 72. and (7) connecting the shafts.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a drilling tool. Referring to fig. 1, the drilling tool includes a tool bit 1 and a tool shank 11 which are integrally formed.

The embodiment of the application discloses a fixture of a drilling tool, and referring to fig. 1, the fixture of the drilling tool comprises a base 2, a fixture sleeve 21 which is slidably mounted on the base 2, and a screw 22 which is rotatably mounted on the base 2. Be fixed with lead screw seat 23 on the base 2, lead screw 22 runs through lead screw 22 and sets up, and lead screw 22 rotates with lead screw seat 23 to be connected. One side of the handle 11 of the drilling tool, which is close to the screw rod 22, is provided with a screw hole 24 which can be in threaded fit with the screw rod 22. The base 2 is also provided with a rotating mechanism 3 for powering the lead screw 22.

The screw rod 22 is in threaded transmission fit with the tool shank 11, so that power is provided for advancing of a drilling tool; in the moving process of the drilling tool, the part of the tool bit 1 can firstly contact with impurities inside the metal, when the part of the tool bit 1 cannot smoothly damage the impurity zone, the tool bit 1 can continuously collide with the impurities in the advancing or self-rotating process due to the fact that the lead screw 22 still provides advancing power for the drilling tool, and damage is caused to the coating of the part of the tool bit 1.

Referring to fig. 1 and 2, the rotating mechanism 3 includes a motor 31 fixed on the base 2 and a transmission assembly 4 for connecting the motor 31 and the lead screw 22. A motor base 32 is fixed on the base 2, and the motor 31 is fixed on the side wall of the motor base 32. The transmission assembly 4 includes a transmission gear 41, and a first rotating gear 42 and a second rotating gear 43 respectively engaged with the transmission gear 41. The first rotating gear 42 is coaxially and fixedly connected with an output shaft of the motor 31; a transmission shaft 44 is coaxially fixedly connected to one side of the first rotating gear 42 away from the motor 31. A transmission pipe 45 is coaxially and fixedly connected to one side of the second rotating gear 43, which is far away from the motor 31; the transmission tube 45 is sleeved on the periphery of the transmission shaft 44. Three gear seats 33 are fixed on the top of the base 2, and the transmission gear 41, the first rotating gear 42 and the second rotating gear 43 are respectively and rotatably mounted on one gear seat 33.

Referring to fig. 1 and 2, a connecting plate 34 is fixed on both ends of the transmission shaft 44 and the transmission pipe 45 away from the motor 31, the cross section of the connecting plate 34 is circular, and a connecting lug 35 is fixed on the outer peripheral surface of the connecting plate 34 at a relative position. The base 2 is provided with a transmission cylinder 36. A first circular groove 46 is formed in the transmission cylinder 36; the transmission cylinder 36 is positioned on two sides of the first circular groove 46 and is respectively provided with a second circular groove 47, and the inner diameter of the second circular groove 47 is smaller than that of the first circular groove 46; the connecting disc 34 is rotatably arranged in the first circular groove 46 and slidably arranged in the second circular groove 47, and two lug grooves 48 which are symmetrically arranged are formed on the peripheral side of the second circular groove 47; the engaging lug 35 is slidably connected to the drive shaft 36 via a lug groove 48.

Since the first rotating gear 42 and the second rotating gear 43 are respectively meshed with the transmission gear 41, the rotating directions of the first rotating gear 42 and the second rotating gear 43 are opposite, so that the connecting disc 34 fixedly connected with the first rotating gear 42 or the second rotating gear 43 is opposite in rotating direction. When the transmission cylinder 36 is engaged with the two coupling plates 34 disposed opposite to each other, the rotation direction of the transmission cylinder 36 is changed.

Because the second circular groove 47 is respectively disposed at the end of the transmission cylinder 36 close to and far from the motor 31, when the transmission cylinder 36 moves along its axial direction, one of the first rotating gear 42 and the second rotating gear 43 is in a state of being inserted into the second circular groove 47, and the other one is in the first circular groove 46, so that the rotation direction of the transmission cylinder 36 is changed.

Referring to fig. 2, a connecting hole 37 is formed on a side of the transmission cylinder 36 away from the motor 31, and the screw rod 22 is slidably connected with the connecting hole 37 along the length direction of the base 2. Preferably, a guide plate is fixed on the outer peripheral surface of one end of the screw rod 22 close to the motor 31, and a guide groove capable of being connected with the guide plate in a sliding manner is formed on the inner wall of the connecting hole 37.

Since the transmission cylinder 36 needs to change the rotation direction of the lead screw 22 by moving itself, the lead screw 22 and the transmission cylinder 36 maintain a sliding connection relationship.

Referring to fig. 1, a sliding groove 51 is formed in the base 2, and the base 2 is connected with a connecting seat 5 in a sliding manner along the length direction of the base through the sliding groove 51. The connecting base 5 is provided with a transmission hole 52 for fixedly connecting the transmission cylinder 36. Two sets of magnet assemblies 6 are arranged in the sliding groove 51 along the width direction of the base 2. The magnet assembly 6 includes two electromagnets 61 arranged along the length of the base 2. Magnetic attraction pieces 62 which can be magnetically attracted with the electromagnet 61 are respectively fixed on two sides of the connecting seat 5.

Referring to fig. 1, two sets of varistor modules 7 are disposed in the chute 51 along the width direction of the base 2. The varistor assembly 7 comprises two sliding varistors 71 arranged along the length direction of the base 2; the magnetic attraction piece 62 is a slide of the slide rheostat 71. The power supply, the electromagnet 61 and the slide rheostat 71 form a series circuit; the positive pole of the power supply is electrically connected with the electromagnet 61, and the electromagnet 61 is electrically connected with a terminal at one end of the slide rheostat 71 far away from the electromagnet 61. The magnetically attractive tab 62 is electrically connected to the negative pole of the power supply.

When the magnetic attraction piece 62 contacts the slide rheostat 71, a circuit formed by the magnetic attraction piece 62, the slide rheostat 71, the electromagnet 61 and the power supply is in a conducting state, the electromagnet 61 generates magnetism on the magnetic attraction piece 62, and the magnetic attraction piece 62 is located at the bottom of the transmission cylinder 36. Because the terminal of the rheostat 71 is positioned at the side of the rheostat 71 far away from the electromagnet 61, when the electromagnet 61 and the magnet sheet 62 keep the adsorption state, the magnet sheet 62 is contacted with the rheostat 71 and makes the rheostat 71 in the state of maximum resistance; after the transmission cylinder 36 moves towards one side close to the motor 31, the magnetic attraction sheet 62 moves, so that the resistance value of the sliding rheostat 71 is reduced, the current corresponding to the electromagnet 61 is increased, the attraction force of the electromagnet 61 on the magnetic attraction sheet 62 is enhanced, and the drilling tool is convenient to damage hard impurities in the rigid collision process of the hard impurities, and after the hard impurities are damaged, the electromagnet 61 can lift and attract the magnetic attraction sheet 62 again and enable the transmission cylinder 36 to move towards one side far away from the motor 31.

One side of the clamp sleeve 21 close to the motor 31 is fixed with a connecting shaft 72, and one end of the connecting shaft 72 far away from the clamp sleeve 21 is fixedly connected with the transmission cylinder 36.

The implementation principle of the clamp of the drilling tool in the embodiment of the application is as follows:

after the drilling tool contacts the hard impurities in the metal, the lead screw 22 contacts the hard impurities in the process of matching with the drilling tool. When the drilling tool contacts hard impurities, the tool bit 1 can contact with the impurities in the metal firstly, and when the tool bit 1 cannot damage the impurity belt smoothly, because the lead screw 22 still provides forward power for the drilling tool, the lead screw 22 applies acting force close to one side of the motor 31 to the transmission cylinder 36, and the transmission cylinder 36 overcomes the action of the electromagnet 61 and moves towards one side close to the motor 31.

In the moving process of the transmission cylinder 36, the magnetic attraction piece 62 is contacted with the slide rheostat 71, and along with the movement of the magnetic attraction piece 62, the resistance value of the slide rheostat 71 is reduced; when the current passing through the electromagnet 61 is increased, the magnetism of the electromagnet 61 is increased, and the attraction force of the electromagnet 61 to the magnetic attraction piece 62 is increased.

In the above process, if the cutter head 1 damages impurities, the cutter head 1 continues to advance, and meanwhile, due to the attraction effect of the electromagnet 61 on the magnetic attraction piece 62, the transmission cylinder 36 moves to the side far away from the motor 31.

If the cutter head 1 still does not damage the impurities, the magnetic attraction piece 62 is separated from the slide rheostat 71 at the side far away from the motor 31 and is contacted with the slide rheostat 71 at the side close to the motor 31 in the moving process, so that the electromagnet 61 at the side close to the motor 31 is conducted, the electromagnet 61 generates attraction effect on the magnetic attraction piece 62, and the rotation direction of the screw rod 22 is changed, so that the drilling cutter moves towards the side close to the motor 31.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A clamp of a drilling tool comprises a base (2), a clamp sleeve (21) which is installed on the base (2) in a sliding mode and a lead screw (22) which is installed on the base (2) in a rotating mode; handle of a knife (11) of drilling cutter is close to lead screw (22) one side seted up can with lead screw (22) screw thread fit's screw (24), its characterized in that: the base (2) is provided with a rotating mechanism (3) for providing power for the lead screw (22); the base (2) is rotatably provided with a transmission gear (41) and a first rotating gear (42) and a second rotating gear (43) which are respectively meshed with the transmission gear (41); a transmission shaft (44) is coaxially and fixedly connected to one side, close to the drilling tool, of the rotating gear I (42); a transmission pipe (45) is fixedly connected to one side, far away from the drilling tool, of the second rotating gear (43); a connecting disc (34) is fixed at one end of each of the transmission shaft (44) and the transmission pipe (45) close to the drilling tool, and a transmission cylinder (36) which can be in sliding fit with the connecting disc (34) is connected to one side, far away from the drilling tool, of the lead screw (22) in a sliding manner; and a connecting shaft (72) is fixed on the clamp sleeve (21), and one end of the connecting shaft (72) far away from the clamp sleeve (21) is fixedly connected with the transmission cylinder (36).

2. A drilling tool holder according to claim 1, wherein: the rotating mechanism (3) comprises a motor (31) fixed on the base (2); the first rotating gear (42) is coaxially and fixedly connected with an output shaft of the motor (31).

3. A drilling tool holder according to claim 1, wherein: a connecting lug (35) is fixed at the opposite position of the peripheral surface of the connecting disc (34); a first circular groove (46) is formed in the transmission cylinder (36); the transmission cylinder (36) is positioned on two sides of the first circular groove (46) and is respectively provided with a second circular groove (47); ear grooves (48) are formed in the periphery of the second circular groove (47); the connecting lug (35) can be connected with the transmission cylinder (36) in a sliding mode through the lug groove (48).

4. A drilling tool holder according to claim 1, characterized in that: a connecting hole (37) is formed in one side, close to the drilling tool, of the transmission cylinder (36), and the lead screw (22) is connected with the connecting hole (37) in a sliding mode along the length direction of the base (2); the outer peripheral face of one end, far away from the drilling tool, of the screw rod (22) is fixedly provided with a guide sheet, and the inner wall of the connecting hole (37) is provided with a guide groove which can be connected with the guide sheet in a sliding mode.

5. A drilling tool holder according to claim 1, characterized in that: the base (2) is provided with a sliding groove (51), and the base (2) is connected with a connecting seat (5) in a sliding manner along the length direction of the base through the sliding groove (51); the transmission cylinder (36) penetrates through the connecting seat (5) and is fixedly connected with the connecting seat (5).

6. A drilling tool holder according to claim 5, characterized in that: a magnet assembly (6) is arranged in the sliding groove (51); the magnet assembly (6) comprises two electromagnets (61) arranged along the length direction of the base (2); magnetic suction pieces (62) which can be magnetically sucked with the electromagnets (61) are respectively fixed on two sides of the connecting seat (5).

7. A drilling tool holder according to claim 6, wherein: a variable resistance component (7) is arranged in the sliding groove (51); the rheostat assembly (7) comprises two sliding rheostats (71) arranged along the length direction of the base (2); the magnetic attraction sheet (62) is a sliding sheet of the sliding rheostat (71); the power supply, the electromagnet (61) and the slide rheostat (71) form a series circuit; the positive electrode of the power supply is electrically connected with the electromagnet (61), and the electromagnet (61) is electrically connected with a binding post at one end of the slide rheostat (71) far away from the electromagnet (61); the magnetic attraction piece (62) is electrically connected with the negative electrode of the power supply.

8. A drilling tool according to any one of claims 1-7, characterized in that: comprises a cutter head (1) and a cutter handle (11) which are integrally formed.

Images