Percussion drill for robot

Abstract

The utility model discloses a percussion drill for a robot, which comprises a main case, a percussion shaft mounted in the main case and a motor for driving the percussion shaft, a piston is mounted in an inner cavity of the percussion shaft, the motor drives the piston, an air storage bag is arranged in the inner cavity of the percussion shaft, and the air storage bag is connected with the percussion shaft. The inner diameter of the air storage air bag is larger than that of an inner cavity of the impact shaft, the air storage air bag is located on the front portion of the impact shaft, the piston inflates the air storage air bag at high pressure, and high-pressure air in the air storage air bag drives the impact shaft to conduct hammering motion. The air storage air bag is arranged at the front end of the impact shaft, the piston inflates the air storage air bag, so that the air storage air bag is in a high-pressure state, hammering is achieved through high-pressure air, and the impact shaft has the impact effect. High-pressure gas is used for hammering, vibration of the front end of the percussion drill is reduced due to the buffering effect of the gas, and vibration impact of the percussion drill on the mechanical arm is reduced.

Description

Technical Field

[0001] The utility model relates to a drilling device used in a robot, in particular to an impact drill dedicated to the robot. Background Art

[0002] The drilling end device used by the drilling robot in the prior art is usually a rotary drill bit, which requires a large pressure to be applied all the time to drill holes, and the drilling effect is poor. For example, the Chinese utility model patent No. ZL202120659119.5, published on December 10, 2021, discloses a drilling mechanism, including: an electric drill, the electric drill includes a drill bit for drilling holes; a dust collection component, one end of the dust collection component is connected to the electric drill, the dust collection component is sleeved on the outside of the drill bit and can be retracted along the axial direction of the drill bit, and the dust collection component is provided with a dust collection chamber connected to an external vacuum cleaner; a dust hood, the dust hood is connected to the other end of the dust collection component and connected to the dust collection chamber, a centering frame is provided in the dust hood, a centering hole is provided on the centering frame, and the drill bit passes through the centering hole and extends out of the dust hood. In the above scheme, the electric drill can only perform rotational motion, and the rotary drilling operation is adopted, which is inefficient. When the impact electric hammer in the prior art is installed on the mechanical arm, a large impact will be generated on the mechanical arm, causing great damage to the mechanical arm. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art and provide an impact drill for a robot with small vibration impact and stronger applicability.

[0004] According to the utility model, an impact drill for a robot includes a main housing, an impact shaft installed in the main housing and a motor driving the impact shaft, a piston is installed in the inner cavity of the impact shaft, the motor drives the piston, an air storage bag is arranged in the inner cavity of the impact shaft, the inner diameter of the air storage bag is larger than the inner diameter of the inner cavity of the impact shaft, the air storage bag is located at the front part of the impact shaft, the piston inflates the air storage bag with high pressure, and the high-pressure gas in the air storage bag drives the impact shaft to perform hammering motion.

[0005] The impact drill for a robot provided by the utility model also has the following auxiliary technical features:

[0006] It further includes that the air storage bag is formed by the outer wall of the impact shaft bulging outwards.

[0007] It may further be included that the maximum inner diameter of the air storage bag is 10% to 40% larger than the inner diameter of the impact shaft.

[0008] It further includes a collaborative robot arm connecting assembly suitable for connecting to a collaborative robot, the connecting assembly includes a connecting seat and a shock-absorbing and damping block connected to the connecting seat, the shock-absorbing and damping block is installed in the main housing, and the shock-absorbing and damping block is connected to the main housing through a guide mechanism.

[0009] It further includes that the guiding mechanism includes a guide sleeve fixed in the shock-absorbing damping block and a guide column connected to the main housing, and the guide column is inserted into the guide sleeve.

[0010] Furthermore, the connecting assembly also includes a sliding shell, the sliding shell is installed in the main shell and slides along the inner cavity of the main shell, and the shock-absorbing damping block is installed in the sliding shell.

[0011] It further includes that a connecting arm is arranged between the connecting seat and the sliding shell, a limiting bolt is arranged on the sliding shell, and the limiting bolt passes through the shock absorbing damping block and is connected to the main shell.

[0012] It further includes that a bearing seat is installed on the side wall of the main housing, the motor is connected to the bearing seat, and a transmission mechanism is installed on the bearing seat. The transmission mechanism includes a driving gear connected to the motor, a first driven gear and a second driven gear meshed with the driving gear, the first driven gear is connected to the crankshaft, and the second driven gear is connected to the impact shaft through a bevel gear.

[0013] It further includes that the piston is connected to the crankshaft through a piston rod, and a return spring is sleeved outside the impact shaft.

[0014] It further includes that the motor is a high-torque brushless DC motor.

[0015] Compared with the prior art, the impact drill for a robot provided by the utility model has the following advantages: the utility model adopts an impact drill structure, which is conducive to drilling operations. The utility model is provided with an air storage bag at the front end of the impact shaft. The piston inflates the air storage bag to produce a high-pressure state of the air storage bag, and the high-pressure gas is used to achieve hammering, so that the impact shaft has an impact effect. In addition, by using high-pressure gas for hammering, since the high-pressure gas has a buffering effect, the vibration of the front end of the impact drill is reduced, and the vibration impact of the impact drill on the robot arm is reduced. The utility model has large load and small vibration, is suitable for the configuration and use of collaborative robots, can meet the requirements of drilling operations with different apertures in a wider range, and has stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is a top view of the utility model.

[0018] Figure 3 It is a left view of the utility model.

[0019] Figure 4 It is a three-dimensional diagram of the utility model.

[0020] Figure 5 It is a cross-sectional view of the utility model.

[0021] Figure 6 It is an exploded view of the utility model. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the scheme in the utility model, preferred embodiments are given below and described in detail with reference to the accompanying drawings. The following description is essentially only exemplary and is not intended to limit the application or use of the present disclosure. It should be understood that in all the drawings, corresponding reference numerals represent the same or corresponding parts and features.

[0023] like Figures 1 to 6 As shown, the utility model provides an impact drill for a robot, comprising a main housing 1, an impact shaft 2 installed in the main housing 1 and a motor 3 driving the impact shaft 2, a piston 21 is installed in the inner cavity of the impact shaft 2, the motor 3 drives the piston 21, the piston 21 drives the impact shaft 2 to reciprocate, an air storage bag 8 is arranged in the inner cavity of the impact shaft 2, the inner diameter of the air storage bag 8 is larger than the inner diameter of the inner cavity of the impact shaft 2, the air storage bag 8 is located at the front of the impact shaft 2, the piston 21 inflates the air storage bag 8 with high pressure, and the high pressure gas in the air storage bag 8 drives the impact shaft 2 to perform hammering motion. The impact shaft 2 of the impact drill in the utility model has two actions of rotation and reciprocating impact, which can better realize the drilling operation. Due to the use of the impact drill structure, a large vibration impact force will be generated during the operation, and the mechanical arm in the robot is a precision mechanical structure with a small load. The vibration impact generated by the impact drill will cause greater wear on the joints of the mechanical arm, greatly reducing the service life of the mechanical arm and seriously affecting the operation of the mechanical arm. In order to solve the problem of matching the impact drill with the mechanical arm, the utility model provides an air storage bag 8 at the front of the impact shaft 2. The air storage bag 8 can store more high-pressure gas, and the impact shaft 2 can generate a greater hammering force. Because gas has a buffering effect, high-pressure gas is used for hammering to further reduce the vibration impact of the impact drill.

[0024] See also Figures 1 to 6In the above embodiment given by the utility model, the air storage bag 8 is further formed by the outer wall of the impact shaft 2 bulging outward. The maximum inner diameter of the air storage bag 8 is 10% to 40% larger than the inner diameter of the impact shaft 2. In this embodiment, it is 15%. The air storage bag 8 in the utility model is an oval structure as a whole, which can store more high-pressure gas and further reduce the feedback impact force of the impact shaft 2.

[0025] See also Figures 1 to 6 , the above embodiment of the utility model further includes a mechanical arm connecting component 4 suitable for connecting with the robot, the connecting component 4 includes a connecting seat 41 and a shock absorbing and damping block 42 connected to the connecting seat 41, the shock absorbing and damping block 42 is installed in the main housing 1, and the shock absorbing and damping block 42 is connected to the main housing 1 through a guide mechanism 5. A special connecting component 4 is set on the main housing 1, and the connecting component 4 reduces the vibration impact force through the shock absorbing and damping block 42 and the guide mechanism 5. During operation, the connecting component 4 can slide relative to the main housing 1, thereby reducing the vibration impact.

[0026] See also Figures 1 to 6 In the above embodiment given by the utility model, the guide mechanism 5 further includes a guide sleeve 51 fixed in the damping block 42 and a guide column 52 connected to the main housing 1, and the guide column 52 is inserted into the guide sleeve 51. The utility model is provided with two sets of guide mechanisms 5, and the guide sleeve 51 and the guide column 52 enable the damping block 42 to slide in the main housing 1, eliminating the reciprocating impact force generated by the impact shaft 2. At the same time, the above structure can prevent the main housing 1 from shaking during operation, ensuring positioning accuracy.

[0027] See also Figures 1 to 6 In the above embodiment of the utility model, the connection component 4 further includes a sliding housing 43, the sliding housing 43 is installed in the main housing 1 and slides along the inner cavity of the main housing 1, and the shock absorbing damping block 42 is installed in the sliding housing 43. The cross-sectional shape of the sliding housing 43 is the same as the cross-sectional shape of the inner cavity of the main housing 1, so that the main housing 1 will not shake. The sliding housing 43 can improve the connection stability between the connection component 4 and the main housing 1, and realize the soft connection between the two without causing large shaking.

[0028] See also Figures 1 to 6, the above embodiment given by the utility model further includes that a connecting arm 44 is arranged between the connecting seat 41 and the sliding housing 43. The connecting end face of the connecting seat 41 and the mechanical arm in the utility model is arranged at an angle, that is, the connecting end face is arranged at 45 degrees with the center line of the impact shaft 2, and the reciprocating impact force generated by the impact shaft 2 will not directly act on the mechanical arm, reducing the impact force of the impact drill on the mechanical arm. Of course, the angle between the connecting end face and the center line of the impact shaft 2 can also be 30 to 60 degrees, which can effectively reduce the impact of the vibration impact force of the impact shaft 2 on the mechanical arm.

[0029] See also Figures 1 to 6 In the above embodiment of the utility model, a limiting bolt 45 is further provided on the sliding housing 43, and the limiting bolt 45 passes through the damping block 42 and is connected to the main housing 1. The limiting bolt 45 plays a limiting role, preventing the damping block 42 from falling off from the main housing 1, thereby improving safety.

[0030] See also Figures 1 to 6 , the above-mentioned embodiment given in the utility model further includes that a bearing seat 6 is installed on the side wall of the main housing 1, and the motor 3 is connected to the bearing seat 6. The motor 3 in the utility model is arranged on the side of the main housing 1, and is not arranged inside the main housing 1. The motor 3 is provided with a motor housing, and the motor housing is connected to the side wall of the main housing 1. The above-mentioned structure is conducive to the installation of the motor, and a high-torque DC brushless motor can be used. The high-torque DC brushless motor in the utility model has the characteristics of large output torque and small motor size. Since a mechanical arm is used to operate the impact drill and a robot is used for power supply, this type of motor can be used to reduce the overall weight of the impact drill. The motor in the utility model has a high torque that can meet the requirements of a wider range of drilling operations with different apertures, and has stronger applicability.

[0031] See also Figures 1 to 6 , the above embodiment given by the utility model further includes that a transmission mechanism 7 is installed on the bearing seat 6, and the transmission mechanism 7 includes a driving gear 71 connected to the motor 3, a first driven gear 72 and a second driven gear 73 meshing with the driving gear 71, the first driven gear 72 is connected to a crankshaft 74, and the second driven gear 73 is connected to the impact shaft 2 through a bevel gear 75. The transmission mechanism 7 in the utility model has two-way transmission, which can realize the rotation and reciprocating impact drive of the impact shaft 2. The bevel gear 75 can drive the impact shaft 2 to rotate, and one of the gears of the bevel gear 75 is set on the impact shaft 2 and slides along the impact shaft 2.

[0032] See also Figures 1 to 6In the above embodiment of the utility model, the piston 21 is further connected to the crankshaft 74 through a piston rod 22, and the piston 21 drives the impact shaft 2 to reciprocate. The inner cavity of the impact shaft 2 is formed with a piston cylinder structure, and the piston 21 moves in the piston cylinder to inflate the air storage bag 8. When the piston 21 drives the impact shaft 2 to reciprocate, it can also inflate the air storage bag 8 and perform hammering operation through high-pressure gas.

[0033] See also Figures 1 to 6 In the above embodiment of the utility model, a return spring 23 is further included on the outer sleeve of the impact shaft 2. The return spring 23 drives the impact shaft 2 to return when the piston 21 retracts. A drill interface is provided at the front end of the impact shaft 2, and various types of impact drill bits can be used.

[0034] In summary, the above contents are only embodiments of the present invention, which are only used to illustrate the principle of the present invention, and are not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An impact drill for a robot, comprising a main housing, an impact shaft installed in the main housing, and a motor driving the impact shaft, wherein a piston is installed in the inner cavity of the impact shaft, and the motor drives the piston, characterized in that: An air storage bag is arranged in the inner cavity of the impact shaft, the inner diameter of the air storage bag is larger than the inner diameter of the inner cavity of the impact shaft, the air storage bag is located at the front of the impact shaft, the piston inflates the air storage bag with high pressure, and the high-pressure gas in the air storage bag drives the impact shaft to perform hammering motion.

2. The impact drill for a robot according to claim 1, characterized in that: The air storage bag is formed by the outer wall of the impact shaft bulging outwards.

3. The impact drill for a robot according to claim 1, characterized in that: The maximum inner diameter of the air storage bag is 10% to 40% larger than the inner diameter of the impact shaft.

4. The impact drill for a robot according to claim 1, characterized in that: It also includes a mechanical arm connection component suitable for connecting to the robot, the connection component includes a connection seat and a shock-absorbing damping block connected to the connection seat, the shock-absorbing damping block is installed in the main housing, and the shock-absorbing damping block is connected to the main housing through a guide mechanism.

5. The impact drill for a robot as claimed in claim 4, characterized in that: The guide mechanism comprises a guide sleeve fixed in the shock-absorbing damping block and a guide column connected to the main housing, and the guide column is inserted into the guide sleeve.

6. The impact drill for a robot as claimed in claim 4, characterized in that: The connecting assembly further comprises a sliding housing, which is installed in the main housing and slides along the inner cavity of the main housing, and the shock absorbing and damping block is installed in the sliding housing.

7. An impact drill for a robot as claimed in claim 6, characterized in that: A connecting arm is arranged between the connecting seat and the sliding housing, a limiting bolt is arranged on the sliding housing, and the limiting bolt passes through the shock absorbing damping block and is connected with the main housing.

8. The impact drill for a robot according to claim 1, characterized in that: A bearing seat is installed on the side wall of the main housing, the motor is connected to the bearing seat, and a transmission mechanism is installed on the bearing seat. The transmission mechanism includes a driving gear connected to the motor, a first driven gear and a second driven gear meshing with the driving gear, the first driven gear is connected to the crankshaft, and the second driven gear is connected to the impact shaft through a bevel gear.

9. An impact drill for a robot as claimed in claim 8, characterized in that: The piston is connected to the crankshaft via a piston rod, and a return spring is sleeved outside the impact shaft.

10. The impact drill for a robot according to claim 1, characterized in that: The motor is a high-torque brushless DC motor.

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