Ultrasonic drill

Abstract

The invention belongs to the field of drilling, and particularly discloses an ultrasonic drill which comprises a fixing frame, a drill body, a feeding driving unit and a shell. The fixing frame is provided with a guide rod extending in the front-back direction. The drill body is slidably connected with the guide rod. The feeding driving unit comprises a driving part and a linear driving device; the driving part is connected with the drill main body so as to drive the drill main body to linearly reciprocate relative to the linear driving device along the guide rod; the linear driving device only needs to push the drill body to move during ultrasonic drilling and drilling, the whole ultrasonic drill does not need to be driven to move, and compared with the scheme that in the prior art, the whole ultrasonic drill needs to be driven to move and feed drilling, the feeding driving force of the linear driving device can be reduced, rated power can be reduced, energy consumption can be reduced, and cost can be saved.

Description

Technical Field

[0001] The present invention relates to the field of drilling, and particularly to an ultrasonic drill. Background Art

[0002] As an emerging semi-automatic hole-making technology, automatic feed drilling uses its own mechanical structure and a customized drill jig for clamping and positioning, and selects a module to complete the setting of the rotational speed and feed rate. Compared with equipment such as robots and drill riveting machines, it has advantages such as not being limited by the number of end effectors, small space requirement for hole-making, high flexibility, simple operation, light weight, and low cost. Compared with the current hand-held pneumatic drill for hole-making, it has high drilling accuracy and efficiency, high drilling consistency and stability, and greatly reduces the labor intensity of the operator. In existing ultrasonic drills with automatic feed, a power device is used to drive the entire ultrasonic drill to move (including feed drive) so that the drill bit advances. Since it is necessary to push the entire ultrasonic drill to move, the driving power of the power device is relatively large and the energy consumption is high. Summary of the Invention

[0003] The object of the present invention is to provide an ultrasonic drill to solve the technical problem in the prior art that the power device needs to push the entire ultrasonic drill to move for feed drilling, resulting in a relatively large driving power of the required power device and high energy consumption.

[0004] To achieve the above object, the present invention provides an ultrasonic drill, which includes:

[0005] A fixing frame having a guide rod extending in the front-rear direction;

[0006] A drill body slidably connected to the guide rod; the front end of the drill body is used to connect a drill bit;

[0007] A feed drive unit located on one side of the drill body, the feed drive unit including a driving part and a linear drive device for driving the driving part to move back and forth; the linear drive device is fixedly arranged on the fixing frame, and the driving part is fixedly connected to the drill body, so as to drive the drill body to make a linear reciprocating motion along the guide rod relative to the linear drive device.

[0008] Preferably, it further includes a housing fixedly installed on the outer periphery of the fixing frame, at least part of the drill body and the linear drive device are placed in the housing, and the drill bit can extend out of the housing.

[0009] Preferably, the fixing frame further includes a front plate and a middle plate respectively fixedly connected to the inner wall of the housing, the front plate is located in front of the middle plate, and the guide rod is installed between the front plate and the middle plate, and the front plate is also fixedly connected to the front end of the linear drive device.

[0010] Preferably, the driving part includes a driving rod and a rear position plate. The rear position plate is located at the rear side of the middle position plate, and the driving rod extends in the front-rear direction. One end of the driving rod is slidably connected to the linear driving device, and the other end is fixedly connected to the rear position plate. The rear position plate is also connected to the rear end of the drill body to realize the connection between the driving part and the rear end of the drill body.

[0011] Preferably, a damping unit is further included. The damping unit is located on the side of the linear driving device and is placed in the housing. The movable end of the damping unit is tightly abutted against the rear position plate, and the fixed end of the damping unit is fixedly arranged on the middle position plate.

[0012] Preferably, a handle is further included. The handle is fixedly connected to the housing and is located below the linear driving device.

[0013] Preferably, a bottom plate is further included and is located below the linear driving device. The front end of the bottom plate is clamped and fixed between the bottom of the front position plate and the inner wall of the housing. The fixed end of the damping unit is located below the bottom plate. The handle is sleeved outside the fixed end of the damping unit, and the handle is connected to the bottom plate to realize the connection between the handle and the housing. The rear end of the linear driving device is also fixedly connected to the middle position plate.

[0014] Preferably, the number of the damping units is two, and the two damping units are respectively located on both sides of the feed driving unit.

[0015] Preferably, a damping adjustment device is further included and is installed at the front end of the damping unit. The damping adjustment device is located outside the housing.

[0016] Preferably, the housing has a rear cover. The rear cover is located at the rear end of the housing, and the rear cover is provided with a through hole for the rear ends of the driving part and the drill body to pass through.

[0017] Preferably, an opening is provided at the front end of the housing, and the front position plate closes the opening. A through hole for the drill bit to pass through is provided on the front position plate.

[0018] Preferably, a fixing sleeve is further included. The fixing sleeve is connected to the front position plate and is located on the front side of the front position plate. The fixing sleeve is provided with a first installation part for installing a drill sleeve. There is a cavity between the first installation part and the front position plate. The front end of the drill body can pass through the through hole of the front position plate and extend into the cavity.

[0019] Preferably, the fixing sleeve is provided with a replacement notch, and the replacement notch communicates with the cavity.

[0020] Preferably, the drill body is inserted into the fixing frame, the front end and the rear end of the drill body both extend out of the fixing frame, and the driving part extends out of the fixing frame and is fixedly connected to the rear end of the drill body.

[0021] Preferably, the drill body comprises an ultrasonic unit and a rotation drive unit which are sequentially arranged from front to back; and a second mounting portion for mounting a drill bit is provided at the front end of the ultrasonic unit.

[0022] Preferably, the number of the guide rods is four, and the four guide rods are evenly distributed around the drill body.

[0023] The ultrasonic drill provided by the present invention has the following beneficial effects: the linear drive device of the ultrasonic drill drives the drill body to move forward and backward along the guide rod through the drive part, so that the fixed frame and the linear drive device are both fixed when the ultrasonic drill is feeding and drilling, and the linear drive device only needs to push the drill body to move when the ultrasonic drill is feeding and drilling, and there is no need to drive the entire ultrasonic drill including the feed drive device to move. Compared with the solution in the prior art that needs to drive the entire ultrasonic drill to move for feeding and drilling, the ultrasonic drill of this embodiment can reduce the feed driving force of the linear drive device, reduce the rated power, reduce energy consumption, improve energy efficiency, extend the service life of the linear drive device, and save costs.

[0024] Moreover, since the power device is external, it is easy to be affected by external interference, and the ultrasonic drill is prone to shaking during feeding, affecting the drilling quality. Therefore, the present application uses an outer shell to cover the guide rod and the linear drive device, which can prevent external factors from interfering with the linear drive device to drive the drill body to move back and forth, reduce the shaking of the drill body during movement, and ensure that the drill body can be better fed forward to facilitate drilling and improve the drilling quality.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a first embodiment of the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the first embodiment of the present invention after a portion of the outer shell is removed;

[0028] Figure 3 is a schematic structural diagram of a side view of the first embodiment of the present invention after the outer shell is removed;

[0029] Figure 4 It is a schematic diagram of the decomposed structure of the first embodiment of the present invention;

[0030] Figure 5It is a schematic structural diagram of the second embodiment of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the second embodiment of the present invention after removing the housing and the handle;

[0032] Figure 7 It is a schematic cross-sectional structural diagram of the second embodiment of the present invention;

[0033] Figure 8 It is a schematic exploded structural diagram of the second embodiment of the present invention;

[0034] Figure 9 It is a schematic structural diagram of the housing and the handle of the second embodiment of the present invention.

[0035] In the figure, 100 is a fixing frame; 110 is a guide rod; 120 is a through hole; 130 is a front plate; 140 is a middle plate; 200 is a drill body; 210 is a sliding bearing; 220 is an ultrasonic unit; 230 is a rotary drive unit; 240 is a second mounting portion; 241 is a collet; 242 is a nut; 300 is a feed drive unit; 310 is a drive portion; 311 is a drive rod; 312 is a rear plate; 320 is a linear drive device; 400 is a housing; 410 is a receiving cavity; 420 is a rear cover; 421 is a through hole; 430 is an opening; 500 is a damping unit; 510 is a connecting portion; 520 is a damping device; 530 is a damping adjustment device; 600 is a bottom plate; 700 is a handle; 800 is a fixing sleeve; 810 is a first mounting portion; 820 is a cavity; 830 is a replacement notch;

[0036] 10 is a drill bit; 11 is a drill sleeve. Detailed implementation manners

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, rear, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0039] In the description of the present invention, "a plurality of" means more than two. Understandings such as "greater than", "less than", and "exceeding" do not include the corresponding number, while understandings such as "above", "below", and "within" include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0041] Please refer to Figures 1 to 9 , and now the ultrasonic drill provided by the embodiment of the present invention will be described.

[0042] As Figures 1 to 4 shown, the ultrasonic drill of the embodiment of the present invention includes: a fixed frame 100, a drill body 200, a feed driving unit 300, and a housing 400;

[0043] Among them, the fixed frame 100 has a guide rod 110 extending in the front-rear direction; the drill body 200 is slidably connected to the guide rod 110 so that the drill body 200 can move back and forth in the front-rear direction; the front end of the drill body 200 is used to connect the drill bit 10, providing a basis for the forward movement of the drill bit 10; the feed driving unit 300 includes a driving part 310 and a linear driving device 320 for driving the driving part 310 to move back and forth; the linear driving device 320 is fixedly arranged on the fixed frame 100, and the driving part 310 is fixedly connected to the drill body 200. Then, the linear driving device 320 can be used to drive the drill body 200 to move along the extension direction of the guide rod 110 to achieve the purpose of moving back and forth, that is, the driving part 310 drives the drill body 200 to make a linear reciprocating motion along the guide rod 110 relative to the linear driving device 320. When the linear driving device 320 of the ultrasonic drill drives the drill body 200 to move back and forth along the guide rod 110, the fixed frame 100 and the linear driving device 320 are both fixed during the ultrasonic drilling and feeding. The linear driving device 320 only needs to push the drill body 200 to move during the ultrasonic drilling and feeding, without driving the entire ultrasonic drill including the feed driving device to move. Compared with the prior art solution that requires driving the entire ultrasonic drill to move for feeding and drilling (especially the solution of driving the feed driving device to move for feeding and drilling), the ultrasonic drill of this embodiment can reduce the feed driving force of the linear driving device, reduce the rated power, reduce energy consumption, improve energy efficiency, extend the service life of the linear driving device, and save costs.

[0044] The outer shell 400 is fixedly installed on the outer periphery of the fixing frame 100. At least part of the drill body 200 and the linear driving device 320 are placed in the outer shell 400, and the drill bit 10 can extend out of the outer shell 400. Specifically, refer to Figures 1 - 2 , a receiving cavity 410 is provided inside the outer shell 400; the fixing frame 100 is fixedly connected to the outer shell 400, and the linear driving device 320 and the guide rod 110 are both located in the receiving cavity 410. Then, the outer shell 400 can be used to cover the linear driving device 320 and the guide rod 110 to prevent external factors from interfering with the action of the linear driving device 320 driving the drill body 200 to move back and forth, reduce the vibration of the drill body 200 during movement, ensure that the drill body 200 can feed forward better for drilling, and improve the drilling quality. Moreover, in order to facilitate the drill bit 10 to extend outside the outer shell 400, the drill bit 10 can penetrate through the outer shell 400.

[0045] It can be understood that referring to Figure 2 , Figure 4 , the outer shell 400 can be provided with holes to make the receiving cavity 410 communicate with the outside, and the fixing frame 100 is used to cover the holes. Then, a through hole 120 is provided on the fixing frame 100, and the drill bit 10 can also extend into the external space of the outer shell 400 for drilling.

[0046] In some embodiments of the present invention, referring to Figures 2 to 4 , the fixing frame 100 further includes: a front plate 130 and a middle plate 140, and the front plate 130 and the middle plate 140 are respectively fixedly connected to the inner wall of the outer shell 400; the front plate 130 is located in front of the middle plate 140, and the guide rod 110 is installed between the front plate 130 and the middle plate 140. The guide rod 110 is located between the front plate 130 and the middle plate 140, that is, the connection point between the drill body 200 and the guide rod 110 is located between the front plate 130 and the middle plate 140. Then, while fixing the guide rod 110, the front plate 130 and the middle plate 140 can be used to limit the stroke of the drill body 200 in the front-back direction, and the drill body 200 can also be prevented from detaching from the guide rod 110, ensuring that the movement of the drill body 200 is more stable and reliable. The front plate 130 is also fixedly connected to the front end of the linear driving device 320.

[0047] In some embodiments of the present invention, referring to Figures 2 to 4, the driving part 310 includes a driving rod 311 and a rear position plate 312; the rear position plate 312 is located at the rear side of the middle position plate 140; the driving rod 311 extends in the front-rear direction; one end of the driving rod 311 is slidably connected to the linear driving device 320, and the other end thereof is fixedly connected to the rear position plate 312. The rear position plate 312 is also connected to the rear end of the drill body 200 to realize the connection between the driving part and the rear end of the drill body. The linear driving device 320 can drive the driving rod 311 to move in the front-rear direction, so as to drive the rear position plate 312 and the drill body 200 connected to the rear position plate 312 to move forward and backward together. Among them, in order to reduce the space occupied by the drill body 200 and the linear driving device 320 in the front-rear direction, the linear driving device 320 is arranged on one side of the drill body 200, so that the linear driving device 320 and the drill body 200 are stacked, reducing the space occupied by the drill body 200 and the linear driving device 320 in the front-rear direction. Specifically, in this embodiment, referring to Figure 3 , the linear driving device 320 is located below the drill body 200.

[0048] It can be understood that the linear driving device 320 can be a driving device such as a cylinder or an oil cylinder. In this embodiment, the linear driving device 320 is a cylinder.

[0049] In some embodiments of the present invention, referring to Figures 2 to 4 , the ultrasonic drill further includes: a damping unit 500, which is located on one side of the linear driving device 320 and is placed in the housing 400; the damping unit 500 includes a connecting part 510 and a damping device 520; the connecting part 510 is connected to the damping device 520; the damping device 520 is used to provide damping for the connecting part 510 in the front-rear direction; the connecting part 510 is tightly abutted against the rear position plate 312, and the damping device 520 is arranged on the fixing frame 100 and is located in the accommodating cavity 410. The damping unit 500 can be a damping cylinder or a damping oil cylinder. The connecting part 510 is the movable end of the damping unit 500 and can be a component such as a damping rod. The damping device 520 is the corresponding cylinder body, that is, the fixed end of the damping unit 500. The damping device 520 is arranged in the accommodating cavity 410, which can protect the damping device 520 by the housing 400 and reduce the interference from the outside to the damping device 520. By providing the damping unit 500, the linear driving device 320 can be controlled to push the drill body 200 to feed forward more smoothly, ensuring that the drill body 200 can feed at a better uniform speed.

[0050] In some embodiments of the present invention, referring to Figures 2 to 4, the damping device 520 is fixedly connected to the middle plate 140. The damping device 520 is fixed on the middle plate 140, so that the damping device 520 can be closer to the rear plate 312, and the length of the corresponding connecting portion 510 can be shorter, saving space.

[0051] In some embodiments of the present invention, referring to Figures 2 to 4 , the ultrasonic drill further includes: a handle 700, the handle 700 is fixedly connected to the housing 400, and the handle 700 is located below the linear driving device 320.

[0052] For the solution with a relatively heavy weight of the linear driving device, the ultrasonic drill further includes a bottom plate 600; the damping device 520 is located below the linear driving device 320, the bottom plate 600 is located between the damping device 520 and the linear driving device 320, and the front end of the bottom plate 600 is clamped and fixed between the front plate 130 and the inner wall of the housing 400; the handle 700 is sleeved outside the damping device 520, and the handle 700 is connected to the bottom plate 600 to realize the connection between the handle 700 and the housing 400. The edge of the bottom plate 600 is connected to the housing 400, and the front side edge of the bottom plate 600 is connected to the front plate 130 to support the housing 400 and the front plate 130, increase the mechanical strength of the entire housing 400 and the front plate 130, and can support the linear driving device 320, and the rear end of the linear driving device 320 is also fixedly connected to the middle plate 140. The handle 700 is sleeved outside the damping device 520 and connected to the bottom plate 600, which can make the handle 700 better support the bottom plate 600, and further support the weights of the front plate 130, the housing 400, the linear driving device 320, and the drill body 200, so that the force of the ultrasonic drill is better.

[0053] In some embodiments of the present invention, the handle 700 is located below the linear driving device 320. The drill body 200, the linear driving device 320, the bottom plate 600, and the damping device 520 are arranged in sequence from top to bottom, that is, the handle 700, the damping device 520, the drill body 200, and the linear driving device 320 are concentrated between the front plate 130 and the middle plate 140, so that the center of gravity of the ultrasonic drill moves forward, making the handle 700 closer to the drill bit 10, reducing the torque, and enabling the operator to better and stably hold the ultrasonic drill. In addition, for the solution with a relatively small weight of the linear driving device, the bottom plate can be omitted, and the handle 700 can also be directly arranged on the housing 400, as Figures 5 to 9 shown.

[0054] In some embodiments of the present invention, referring to Figures 6 to 8, the number of the damping units 500 is two, and the two damping units 500 are respectively located on both sides of the feed driving unit 300. That is, the damping units 500 can be distributed on the left and right sides of the feed driving unit 300, which can reduce the occupied space of the damping units 500 in the up and down directions and improve the space utilization efficiency.

[0055] In some embodiments of the present invention, referring to Figures 6 to 8 , the ultrasonic drill further includes a damping adjusting device 530; the damping adjusting device 530 is located outside the housing 400, the damping adjusting device 530 is connected to the damping device 520, and the damping adjusting device 530 is used to adjust the damping of the damping device 520. The damping adjusting device 530 can be a regulating valve. By adjusting the opening and closing degree of the regulating valve, the flow rate of the damping fluid in the damping device 520 can be adjusted, so as to adjust the magnitude of the damping force, and thus better adjust the feeding speed of the drill body 200. The damping adjusting device 530 is externally disposed on the housing 400, which is convenient for adjusting the feeding speed.

[0056] In some embodiments of the present invention, referring to Figures 7 to 9 , the housing 400 has a rear cover 420, the rear cover 420 is located at the rear end of the housing 400, and the rear cover 420 is provided with a through hole 421 for allowing the rear ends of the driving part 310 and the drill body 200 to pass through. To reduce the size of the ultrasonic drill, the rear end of the driving part 310, that is, the rear plate 312, and the rear end of the drill body 200 can extend outside the housing 400 through the through hole 421. Of course, the rear end of the drill body and the rear plate may not penetrate the housing, as Figure 2 shown.

[0057] In some embodiments of the present invention, referring to Figures 6 to 8 , an opening 430 is provided at the front end of the housing 400, and the front plate 130 closes the opening 430; the through hole 120 is provided on the front plate 130, that is, the front end of the housing 400 is connected and sealed by the front plate 130 to facilitate assembly.

[0058] In some embodiments of the present invention, referring to Figure 7 and Figure 8, the ultrasonic drill further includes: a fixing sleeve 800; the fixing sleeve 800 is connected to the front plate 130, and the fixing sleeve 800 is located on the front side of the front plate 130; the fixing sleeve 800 is provided with a first mounting portion 810 for mounting a drill sleeve, the first mounting portion 810 is located on the front side of the through hole 120, and there is a cavity 820 between the first mounting portion 810 and the front plate 130. The front end of the drill body 200 can pass through the through hole 120 of the front plate 130 and extend into the cavity 820. The first mounting portion 810 mounts the drill sleeve so that the drill bit 10 can pass through the drill sleeve to drill the workpiece. The cavity 820 is used for the drill bit 10 to pass through so that the drill bit 10 can extend to the drill sleeve. By providing the fixing sleeve 800 and the drill sleeve, the jitter of the drill bit 10 during drilling can be reduced, and the drilling quality can be improved. The drill sleeve is fixedly connected to the drill template, and this part is the same as the prior art, so it will not be elaborated in detail.

[0059] In some embodiments of the present invention, referring to Figure 7 and Figure 8 , the fixing sleeve 800 is provided with a replacement notch 830, and the replacement notch 830 communicates with the cavity 820. Specifically, the drill body 200 has a replacement position on its moving path in the front-rear direction; the front end of the drill body 200 at the replacement position is located in the cavity 820, and the fixing sleeve 800 is provided with a replacement notch 830, and the replacement notch 830 communicates with the cavity 820. That is, when the linear driving device 320 pushes the drill body 200 forward to the replacement position, the front end of the drill body 200 extends into the cavity 820, so that the operator can perform the operation of replacing the drill bit 10 on the front end of the drill body 200 from the outside through the replacement notch 830.

[0060] In some embodiments of the present invention, referring to Figures 6 to 8 , the drill body 200 is slidably connected to the guide rod 110 through a sliding bearing 210, and the outer side of the guide rod 110 has a wear-resistant coating. The wear-resistant coating on the outer side of the guide rod 110 can reduce the friction and wear between the sliding bearing 210 and the guide rod 110 and extend the service life.

[0061] In some embodiments of the present invention, referring to Figures 6 to 8, the drill body 200 includes an ultrasonic unit 220 and a rotary drive unit 230 arranged in sequence from front to back; a second mounting portion 240 for mounting the drill bit 10 is provided at the front end of the ultrasonic unit 220. The rotary drive unit 230 is a pneumatic motor to drive the drill bit 10 to rotate. The ultrasonic unit 220 includes a horn and a transducer. The ultrasonic unit 220 is used to convert electromagnetic energy into kinetic energy to transmit ultrasonic waves to the drill bit 10 so that the drill bit 10 performs ultrasonic vibration drilling. The second mounting portion 240 is a collet 241 and a nut 242. After the drill bit 10 extends into the collet 241, the nut 242 can be rotated to lock the drill bit 10 in the collet 241 so that the drill body 200 drives the drill bit 10 to rotate.

[0062] In some embodiments of the present invention, referring to Figures 2 to 3 , and Figures 6 - 8 , the drill body 200 is inserted into the fixing frame 100. The front end and the rear end of the drill body 200 both extend out of the fixing frame 100. The driving portion 310 extends out of the fixing frame 100 and is fixedly connected to the rear end of the drill body 200.

[0063] In some embodiments of the present invention, referring to Figures 2 to 3 , and Figures 6 to 8 , the number of the guide rods 110 is four, and the four guide rods 110 are evenly distributed around the drill body 200. The guide rods 110 are evenly distributed around the drill body 200, so that the drill body 200 can be slidably connected to the fixing frame 100 through the four guide rods 110, ensuring that the drill body 200 can move back and forth along the fixing frame 100 and enabling the drill body 200 to stably feed forward for drilling.

[0064] In summary, the linear drive device 320 of the ultrasonic drill in this embodiment drives the drill body 200 to move back and forth along the guide rod 110 through the driving portion 310. Then, the housing 400, the fixing frame 100, and the linear drive device 320 are all fixed during ultrasonic drilling and feeding. The linear drive device 320 only needs to push the drill body 200 to move during ultrasonic drilling and feeding, without driving the entire ultrasonic drill to move. Compared with the prior art solution that requires driving the entire ultrasonic drill to move for feeding and drilling, the ultrasonic drill in this embodiment can reduce the feeding driving force of the linear drive device 320, reduce the rated power, reduce energy consumption, improve energy efficiency, extend the service life of the linear drive device 320, and save costs. Moreover, by using the housing 400 to cover the guide rod 110 and the linear drive device 320, it is possible to prevent external factors from interfering with the action of the linear drive device 320 driving the drill body 200 to move back and forth, reduce the vibration of the drill body 200 during movement, ensure that the drill body 200 can feed forward better for drilling, and improve the drilling quality.

[0065] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An ultrasonic drill, characterized in that, Comprising: A fixing bracket having a guide rod extending in the front-rear direction; A drill body slidably connected to the guide rod; the front end of the drill body is used to connect a drill bit; A feed driving unit located on one side of the drill body. The feed driving unit includes a driving part and a linear driving device for driving the driving part to move back and forth. The linear driving device is fixedly arranged on the fixing bracket, and the driving part is fixedly connected to the drill body, so as to drive the drill body to make a linear reciprocating motion along the guide rod relative to the linear driving device.

2. The ultrasonic drill according to claim 1, wherein It further includes a housing fixedly installed on the outer periphery of the fixing bracket. At least part of the drill body and the linear driving device are placed in the housing, and the drill bit can extend out of the housing.

3. The ultrasonic drill according to claim 2, wherein The fixing bracket further includes a front position plate and a middle position plate respectively fixedly connected to the inner wall of the housing. The front position plate is located in front of the middle position plate, and the guide rod is installed between the front position plate and the middle position plate. The front position plate is also fixedly connected to the front end of the linear driving device.

4. The ultrasonic drill according to claim 3, characterized in that, The driving part includes a driving rod and a rear position plate. The rear position plate is located behind the middle position plate, and the driving rod extends in the front-rear direction. One end of the driving rod is slidably connected to the linear driving device, and the other end is fixedly connected to the rear position plate. The rear position plate is also connected to the rear end of the drill body to realize the connection between the driving part and the rear end of the drill body.

5. The ultrasonic drill according to claim 4, wherein It further includes a damping unit located on the side of the linear driving device and placed in the housing. The movable end of the damping unit is tightly abutted against the rear position plate, and the fixed end of the damping unit is fixedly arranged on the middle position plate.

6. The ultrasonic drill according to claim 5, wherein It further includes: A handle fixedly connected to the housing and located below the linear driving device.

7. The ultrasonic drill according to claim 6, wherein It further includes a bottom plate located below the linear driving device. The front end of the bottom plate is clamped and fixed between the bottom of the front position plate and the inner wall of the housing. The fixed end of the damping unit is located below the bottom plate. The handle is sleeved outside the fixed end of the damping unit, and the handle is connected to the bottom plate to realize the connection between the handle and the housing. The rear end of the linear driving device is also fixedly connected to the middle position plate.

8. The ultrasonic drill according to claim 5, wherein, The number of the damping units is two, and the two damping units are respectively located on both sides of the feed driving unit.

9. The ultrasonic drill according to claim 5, wherein It further includes a damping adjustment device installed at the front end of the damping unit; the damping adjustment device is located outside the housing.

10. The ultrasonic drill according to claim 2, characterized in that, The housing has a rear cover located at the rear end of the housing. The rear cover is provided with a through hole for the rear ends of the driving part and the drill body to pass through.

11. The ultrasonic drill according to claim 3, characterized in that, The front end of the housing is provided with an opening, and the front position plate closes the opening; the front position plate is provided with a through hole for the drill bit to pass through.

12. The ultrasonic drill according to claim 11, wherein, It further includes: A fixing sleeve; The fixing sleeve is connected to the front position plate and located in front of the front position plate. The fixing sleeve is provided with a first installation part for installing a drill sleeve. There is a cavity between the first installation part and the front position plate. The front end of the drill body can pass through the through hole of the front position plate and extend into the cavity.

13. The ultrasonic drill according to claim 12, characterized in that, The fixed sleeve is provided with a replacement notch, and the replacement notch communicates with the cavity.

14. The ultrasonic drill according to claim 1, wherein The drill body is disposed through the fixing frame, the front end and the rear end of the drill body both extend out of the fixing frame, and the driving part extends out of the fixing frame and is fixedly connected to the rear end of the drill body.

15. The ultrasonic drill according to claim 1, wherein The drill body includes an ultrasonic unit and a rotary drive unit arranged in sequence from front to back; a second mounting portion for mounting a drill bit is arranged at the front end of the ultrasonic unit.

16. The ultrasonic drill according to claim 1, characterized in that, The number of the guide rods is four, and the four guide rods are evenly distributed around the drill body.

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