CN216398700U - Servo four-axis compound machine - Google Patents

Servo four-axis compound machine Download PDF

Info

Publication number
CN216398700U
CN216398700U CN202122988258.5U CN202122988258U CN216398700U CN 216398700 U CN216398700 U CN 216398700U CN 202122988258 U CN202122988258 U CN 202122988258U CN 216398700 U CN216398700 U CN 216398700U
Authority
CN
China
Prior art keywords
screw rod
axis
driving motor
drilling
servo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202122988258.5U
Other languages
Chinese (zh)
Inventor
李永富
戴培海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quanzhou Anken Automation Machinery Co ltd
Original Assignee
Quanzhou Anken Automation Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quanzhou Anken Automation Machinery Co ltd filed Critical Quanzhou Anken Automation Machinery Co ltd
Priority to CN202122988258.5U priority Critical patent/CN216398700U/en
Application granted granted Critical
Publication of CN216398700U publication Critical patent/CN216398700U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The utility model discloses a servo four-axis compound machine which comprises a rack, a workbench arranged on the rack and a drilling and tapping mechanism, wherein the drilling and tapping mechanism comprises four groups of drilling and tapping devices and a first driving motor; the second driving motor can drive the cutter feeding shaft to move up and down on the main shaft box of the machine frame under the action of the screw rod transmission mechanism; the first driving motor can drive the cutter feeding shafts of the four groups of drilling and tapping devices to rotate on the main spindle box of the frame through the transmission device, so that drilling cutters or tapping cutters at the tail of the cutter feeding shafts process workpieces.

Description

Servo four-axis compound machine
Technical Field
The utility model relates to a servo four-axis compound machine.
Background
The existing drilling and tapping compound machine can only drill/tap one hole on a workpiece at one time, and is low in efficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a servo four-axis compound machine.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a servo four-axis compound machine comprises a rack, a workbench and a drilling and tapping mechanism, wherein the workbench and the drilling and tapping mechanism are arranged on the rack; the second driving motor can drive the cutter feeding shaft to move up and down on the main shaft box of the frame under the action of the screw rod transmission mechanism; the first driving motor can drive the cutter feeding shafts of the four groups of drilling and tapping devices to rotate on the main spindle box of the frame through the transmission device, so that drilling cutters or tapping cutters at the tail of the cutter feeding shafts process workpieces.
Preferably, the screw rod transmission mechanism comprises a screw rod, a screw rod nut, a screw rod push block and a guide rod, the screw rod is longitudinally and rotatably connected to a main spindle box of the frame, the screw rod is fixedly connected to an output shaft of the second driving motor, the screw rod nut is meshed with the screw rod, one end of the screw rod push block is fixedly connected with the screw rod nut, the middle part of the screw rod push block is sleeved on the guide rod, and the other end of the screw rod push block is connected with the cutter feeding shaft; the cutter feeding shaft is connected to the spindle box through a bearing.
Preferably, the output shaft of the second driving motor is connected with the top of the screw rod through a coupler.
Preferably, the screw rod is rotatably connected to the right side of the spindle box through a bearing; the guide rod is longitudinally arranged on the middle part of the main spindle box.
Preferably, the transmission device comprises a driving wheel, a driven wheel and a conveying belt, and the driving wheel is sleeved on an output shaft of the first driving motor; the number of the driven wheels is 4, and the driven wheels are respectively sleeved on spline sleeves at the tops of cutter feeding shafts corresponding to the four groups of drilling and tapping devices; the conveyer belt is sleeved between the driving wheel and the 4 driven wheels.
Preferably, the machine frame is connected with a lifting component capable of driving the workbench to move up and down in the machine frame, the lifting component comprises a base, a Z-axis screw rod, a middle carriage and a crank, the base is fixedly connected below the main spindle box in the machine frame, the Z-axis screw rod is longitudinally rotatably connected to the base, the middle carriage is arranged above the base, a Z-axis screw rod nut meshed with the Z-axis screw rod is arranged on the lower portion of the middle carriage, Z-axis moving rods capable of sliding in the height direction of the base are arranged on two sides of the middle carriage, a first bevel gear is sleeved on one side of the crank extending into the base, a second bevel gear in threaded connection with the first bevel gear is sleeved on the middle portion of the Z-axis screw rod, and the first bevel gear and the second bevel gear can be in threaded connection under the rotation of the crank, finally, the middle carriage can move up and down on the base.
Preferably, the portable electronic device further comprises an upper carriage, the upper carriage is connected with the middle carriage through a front-rear driving component, the front-rear driving component comprises a Y-axis driving motor, a Y-axis lead screw and a Y-axis lead screw nut, the Y-axis lead screw is rotatably connected to the middle carriage, an output shaft of the Y-axis driving motor is fixedly connected with the Y-axis lead screw, the Y-axis lead screw nut is meshed and connected to the middle part of the Y-axis lead screw, the upper carriage is fixedly connected to the Y-axis lead screw nut, and Y-axis moving rods capable of moving along the length direction of the middle carriage are respectively arranged on two sides of the upper carriage; the upper carriage can drive the workbench to move back and forth on the frame under the action of the Y-axis driving motor.
Preferably, the upper carriage is connected with the workbench through a left driving part and a right driving part, the left driving part and the right driving part comprise an X-axis driving motor, an X-axis lead screw and an X-axis lead screw nut, the X-axis lead screw is rotatably connected to the upper carriage, an output shaft of the X-axis driving motor is fixedly connected with the X-axis lead screw, the X-axis lead screw nut is meshed and connected to the middle part of the X-axis lead screw, the lower end surface of the workbench is fixedly connected with the X-axis lead screw nut, and X-axis moving rods capable of moving along the length direction of the upper carriage are respectively arranged on two sides of the workbench; the workbench can move left and right on the machine frame under the action of the X-axis driving motor.
Preferably, a protective cover is further arranged around the workbench.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
the servo four-axis compound machine provided by the utility model has the advantages that the four groups of drilling and tapping devices and the first driving motor are arranged on the main spindle box, each group of drilling and tapping devices is formed by combining the second driving motor, the cutter feeding shaft and the screw rod transmission mechanism, namely, the first driving motor and the second driving motor are started, the first driving motor drives the four cutter feeding shafts to simultaneously operate through the transmission device, and the second driving motor can drive the cutter feeding shaft to move up and down through the screw rod transmission mechanism, so that a plurality of workpieces can be drilled and tapped, and the working efficiency is greatly improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a front view of a servo four-axis compound machine according to the present invention;
FIG. 2 is a right side view of a servo four-axis compound machine according to the present invention;
FIG. 3 is a top view of a servo four-axis compound machine according to the present invention;
FIG. 4 is a schematic view of a drilling and tapping device of the servo four-axis compound machine according to the present invention;
fig. 5 is a cross-sectional view a-a of fig. 4.
In the figure: 1. a frame; 21. a second drive motor; 22. feeding a cutter shaft; 22a spline housing; 3. a first drive motor; 41. a screw rod; 42. a feed screw nut; 43. a screw rod push block; 44. a guide bar; 51. a driving wheel; 52. a driven wheel; 53. a conveyor belt; 61. a base; a Z-axis lead screw; 63. a middle carriage; 64. a hand crank; 71. X-axis drive motor; an X-axis lead screw; 8. a main spindle box; 9. a protective cover; 10. a coupling; 11. a work table; a Y-axis lead screw.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Examples
Referring to fig. 1 to 5, a servo four-axis compound machine comprises a frame 1, a workbench 11 arranged on the frame 1, and a drilling and tapping mechanism, wherein the drilling and tapping mechanism comprises four groups of drilling and tapping devices and a first driving motor 3, and each group of drilling and tapping devices comprises a second driving motor 21, a cutter feeding shaft 22 and a screw rod transmission mechanism; the second driving motor 21 can drive the cutter feeding shaft 22 to move up and down on the main spindle box 8 of the frame under the action of the screw rod transmission mechanism; the first driving motor 3 can drive the cutter feeding shafts 22 of the four groups of drilling and tapping devices to rotate in the spindle box of the frame through a transmission device, so that the drilling cutters or tapping cutters at the tail parts of the cutter feeding shafts 22 can process workpieces. Adopt this structure, through installing four group's drilling tapping device on the headstock, first driving motor, and every group drilling tapping device combines to constitute by second driving motor, advance arbor and screw drive mechanism etc. and start first driving motor and second driving motor promptly, first driving motor drives four and advances the arbor and move simultaneously through transmission, second driving motor can drive through screw drive mechanism and advance the arbor and can carry out the up-and-down motion, thereby make and to drill and attack the tooth to a plurality of work pieces, work efficiency is greatly improved.
Further, the screw rod transmission mechanism comprises a screw rod 41, a screw rod nut 42, a screw rod pushing block 43 and a guide rod 44, the screw rod 41 is longitudinally and rotatably connected to the spindle box 8 of the frame 1, the screw rod 41 is fixedly connected to an output shaft of the second driving motor 21, the screw rod nut 42 is meshed with the screw rod 41, one end of the screw rod pushing block 43 is fixedly connected with the screw rod nut 42, the middle part of the screw rod pushing block 43 is sleeved on the guide rod 44, and the other end of the screw rod pushing block 43 is connected with the feeding shaft 22; the cutter feeding shaft 22 is connected to the spindle head 8 through a bearing. By adopting the structure, the second driving motor is started, the rotation of the output shaft of the second driving motor drives the rotation of the connected screw rod, so that the screw rod can be meshed with the screw rod nut and connected, and the screw rod push block can move up and down along the spindle box under the action of the guide rod, so that the cutter feeding shaft connected with the screw rod push block is driven to move up and down, and the tapping and drilling of a workpiece are facilitated.
Further, the output shaft of the second driving motor 21 is connected with the top of the screw rod 41 through the coupling 10. By adopting the structure, the transmission process is more stable.
Further, the screw rod 41 is rotatably connected to the right side of the spindle box 8 through a bearing; the guide bar 44 is longitudinally disposed on the middle of the headstock 8.
Further, the transmission device comprises a driving wheel 51, a driven wheel 52 and a conveyor belt 53, wherein the driving wheel 51 is sleeved on an output shaft of the first driving motor 3; the driven wheels 52 are 4 in number and are respectively sleeved on the spline sleeves 22a at the tops of the cutter feeding shafts 22 corresponding to the four groups of drilling and tapping devices; the transmission belt 53 is sleeved between the driving wheel 51 and the 4 driven wheels 52. By adopting the structure, the rotation of the output shaft of the first driving motor drives the rotation of the driving wheel connected with the first driving motor, and the driving wheel can drive the four cutter feeding shafts to operate simultaneously under the action of the driving belt, so that the working efficiency is greatly improved.
Furthermore, a lifting component capable of driving the workbench to move up and down is connected to the machine frame 1, the lifting component comprises a base 61, a Z-axis screw rod 62, a middle carriage 63 and a hand crank 64, the base 61 is fixedly connected to the machine frame 1 below the spindle box 8, the Z-axis screw rod 62 is longitudinally and rotatably connected to the base 61, the middle carriage 63 is arranged above the base 61, a Z-axis screw rod nut meshed with the Z-axis screw rod 62 is arranged on the lower portion of the middle carriage 63, Z-axis moving rods capable of sliding in the height direction of the base are arranged on two sides of the middle carriage 63, a first bevel gear is sleeved on one side of the hand crank 64 extending into the base 61, a second bevel gear in threaded connection with the first bevel gear is sleeved on the middle portion of the Z-axis screw rod 62, so that the first bevel gear and the second bevel gear can be in threaded connection under the rotation of the hand crank 64, finally, the middle carriage can move up and down on the base. Adopt this structure, manually wave the crank 64 promptly, driven the rotation rather than the first bevel gear who is connected, first bevel gear can carry out threaded connection with the second bevel gear to make Z axle lead screw 62 can rotate, finally can carry out elevating movement in order to drive the workstation, do benefit to getting of work piece and put.
The upper carriage is connected with the middle carriage 63 through a front driving part and a rear driving part, the front driving part and the rear driving part comprise a Y-axis driving motor, a Y-axis lead screw 12 and a Y-axis lead screw nut, the Y-axis lead screw is rotatably connected to the middle carriage, an output shaft of the Y-axis driving motor is fixedly connected with the Y-axis lead screw, the Y-axis lead screw nut is meshed and connected to the middle part of the Y-axis lead screw 12, the upper carriage is fixedly connected to the Y-axis lead screw nut, and Y-axis moving rods capable of moving along the length direction of the middle carriage are respectively arranged on two sides of the upper carriage; the upper carriage can drive the workbench to move back and forth on the frame under the action of the Y-axis driving motor. By adopting the structure, when the front position and the rear position of the workbench are required to be adjusted, the Y-axis driving motor is started firstly, the Y-axis screw rod connected with the Y-axis driving motor is driven to rotate by the rotation of the output shaft of the Y-axis driving motor to be connected in a rotating manner, the Y-axis screw rod nut can be meshed with the Y-axis screw rod to be connected, the upper carriage is driven to move in the length direction of the middle carriage, and finally, the workbench can be driven to move back and forth, so that the workpiece can be processed fully automatically.
Further, the upper carriage is connected with the workbench through a left driving part and a right driving part, the left driving part and the right driving part comprise an X-axis driving motor 71, an X-axis lead screw 72 and an X-axis lead screw nut, the X-axis lead screw 72 is rotatably connected to the upper carriage, an output shaft of the X-axis driving motor 71 is fixedly connected with the X-axis lead screw, the X-axis lead screw nut is meshed and connected to the middle part of the X-axis lead screw, the lower end surface of the workbench is fixedly connected with the X-axis lead screw nut, and X-axis moving rods capable of moving along the length direction of the upper carriage are respectively arranged on two sides of the workbench; the workbench can move left and right on the machine frame under the action of the X-axis driving motor. Adopt this structure, when the position about needs adjust the workstation promptly, start X axle driving motor 71 earlier, the rotation of X axle driving motor 71 output shaft has driven the X axle lead screw rather than being connected and has rotated and be connected, and X axle lead screw nut can be connected with X axle lead screw 72 meshing, finally removes about can moving in order to drive workstation 11, does benefit to and carries out full-automatic processing to the work piece.
Furthermore, a protective cover 9 is arranged around the workbench. By adopting the structure, the arrangement of the protective cover avoids the problem of safety accidents caused by splashing of scrap iron in the processing process.
It should be noted that the electrical components presented in this application are all connected to an external power source and a control system, wherein the control system may adopt a structure in the prior art, and the control system is used for controlling the operations of the first driving motor, the second driving motor, the Y-axis driving motor and the X-axis driving motor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides a servo four-axis compounding machine, includes frame (1), workstation (11) and the drilling of setting in frame (1) attack tooth mechanism, its characterized in that: the drilling and tapping mechanism comprises four groups of drilling and tapping devices and a first driving motor (3), and each group of drilling and tapping devices comprises a second driving motor (21), a cutter feeding shaft (22) and a screw rod transmission mechanism; the second driving motor (21) can drive the cutter feeding shaft (22) to move up and down on a main shaft box (8) of the frame under the action of the screw rod transmission mechanism; the first driving motor (3) can drive the cutter feeding shafts (22) of the four groups of drilling and tapping devices to rotate on a main spindle box of the frame through a transmission device, so that drilling cutters or tapping cutters at the tail of the cutter feeding shafts (22) process workpieces.
2. The servo four-axis compound machine according to claim 1, wherein: the screw rod transmission mechanism comprises a screw rod (41), a screw rod nut (42), a screw rod pushing block (43) and a guide rod (44), the screw rod (41) is longitudinally and rotatably connected to a main shaft box (8) of the rack (1), the screw rod (41) is fixedly connected to an output shaft of the second driving motor (21), the screw rod nut (42) is meshed with the screw rod (41), one end of the screw rod pushing block (43) is fixedly connected with the screw rod nut (42), the middle of the screw rod pushing block (43) is sleeved on the guide rod (44), and the other end of the screw rod pushing block (43) is connected with the cutter feeding shaft (22); the cutter feeding shaft (22) is connected to the spindle box (8) through a bearing.
3. The servo four-axis compound machine according to claim 2, wherein: the output shaft of the second driving motor (21) is connected with the top of the screw rod (41) through a coupler (10).
4. The servo four-axis compound machine according to claim 2, wherein: the screw rod (41) is rotatably connected to the right side of the spindle box (8) through a bearing; the guide rod (44) is longitudinally arranged on the middle part of the spindle box (8).
5. The servo four-axis compound machine according to claim 1, wherein: the transmission device comprises a driving wheel (51), a driven wheel (52) and a conveying belt (53), wherein the driving wheel (51) is sleeved on an output shaft of the first driving motor (3); the number of the driven wheels (52) is 4, and the driven wheels are respectively sleeved on spline sleeves (22a) at the tops of cutter feeding shafts (22) corresponding to the four groups of drilling and tapping devices; the transmission belt (53) is sleeved between the driving wheel (51) and the 4 driven wheels (52).
6. The servo four-axis compound machine according to claim 1, wherein: the lifting component capable of driving the workbench to move up and down in the rack is connected to the rack (1), the lifting component comprises a base (61), a Z-axis screw rod (62), a middle dragging plate (63) and a crank (64), the base (61) is fixedly connected below the rack (1) located on a spindle box (8), the Z-axis screw rod (62) is longitudinally connected to the base (61) in a rotating mode, the middle dragging plate (63) is arranged above the base (61), a Z-axis screw rod nut meshed with the Z-axis screw rod (62) is arranged on the lower portion of the middle dragging plate (63), Z-axis moving rods capable of being connected in a sliding mode in the height direction of the base are arranged on two sides of the middle dragging plate (63), a first bevel gear is sleeved on one side of the crank (64) extending into the base (61), and a second bevel gear in threaded connection with the first bevel gear is sleeved on the middle of the Z-axis screw rod (62), the first bevel gear and the second bevel gear can be in threaded connection under the rotation of the hand crank (64), and finally the middle dragging plate can move up and down on the base.
7. The servo four-axis compound machine of claim 6, wherein: the automatic dragging and releasing device comprises a middle dragging plate (63), a Y-axis screw rod (12) and a Y-axis screw rod nut, and is characterized by further comprising an upper dragging plate, wherein the upper dragging plate is connected with the middle dragging plate (63) through a front-back driving part, the front-back driving part comprises the Y-axis driving motor, the Y-axis screw rod (12) and the Y-axis screw rod nut, the Y-axis screw rod is rotatably connected to the middle dragging plate, an output shaft of the Y-axis driving motor is fixedly connected with the Y-axis screw rod, the Y-axis screw rod nut is connected to the middle part of the Y-axis screw rod in a meshed mode, the upper dragging plate is fixedly connected to the Y-axis screw rod nut, and Y-axis moving rods capable of moving along the length direction of the middle dragging plate are arranged on two sides of the upper dragging plate respectively; the upper carriage can drive the workbench (11) to move back and forth on the frame under the action of the Y-axis driving motor.
8. The servo four-axis compound machine of claim 7, wherein: the upper carriage is connected with the workbench through a left driving part and a right driving part, the left driving part and the right driving part comprise an X-axis driving motor (71), an X-axis screw rod (72) and an X-axis screw rod nut, the X-axis screw rod is rotatably connected to the upper carriage, an output shaft of the X-axis driving motor is fixedly connected with the X-axis screw rod, the X-axis screw rod nut is meshed and connected to the middle part of the X-axis screw rod, the lower end surface of the workbench is fixedly connected with the X-axis screw rod nut, and X-axis moving rods capable of moving along the length direction of the upper carriage are respectively arranged on two sides of the workbench; the workbench can move left and right on the machine frame under the action of the X-axis driving motor.
9. The servo four-axis compound machine according to claim 1, wherein: a protective cover (9) is further arranged around the workbench.
CN202122988258.5U 2021-11-30 2021-11-30 Servo four-axis compound machine Active CN216398700U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122988258.5U CN216398700U (en) 2021-11-30 2021-11-30 Servo four-axis compound machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122988258.5U CN216398700U (en) 2021-11-30 2021-11-30 Servo four-axis compound machine

Publications (1)

Publication Number Publication Date
CN216398700U true CN216398700U (en) 2022-04-29

Family

ID=81304839

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122988258.5U Active CN216398700U (en) 2021-11-30 2021-11-30 Servo four-axis compound machine

Country Status (1)

Country Link
CN (1) CN216398700U (en)

Similar Documents

Publication Publication Date Title
CN218575026U (en) High-precision bench drill capable of effectively preventing drill bit from being twisted off
CN217832211U (en) Gantry type numerical control flame cutting machine capable of realizing multi-station operation function
CN216398700U (en) Servo four-axis compound machine
CN207387238U (en) Convenient for the numerically-controlled machine tool of aniseed cutting
KR20110012092A (en) 3-axis robot and manufacturing system for gantry type using the same
CN205996708U (en) A kind of lathe with knife rest
CN212094870U (en) Five laser cutting equipment
CN215092774U (en) Rough and fine plane milling and grinding machine
CN205996622U (en) Carving machine with tool magazine device
CN211161969U (en) Lathe tool cutter body structure capable of independently feeding
CN111805008A (en) Numerical control spiral bevel gear milling machine
CN219335564U (en) Punching positioning device of punching machine
CN205702725U (en) A kind of automatic loading and unloading device of gear-hobbing machine
CN219633238U (en) Manipulator for machine tool
CN215033756U (en) Novel high-efficient drilling radial drill of multistation
CN215432703U (en) Quick tool changing device of crosscut aluminum cutting machine
CN216542789U (en) Feeding device of shot blasting machine
CN218081636U (en) High-low speed combined power head and turning and milling combined machining center
CN215847160U (en) Discharging mechanism for gantry numerical control milling machine
CN216607513U (en) Automatic feeding device of compact numerical control gear hobbing machine
CN216502458U (en) Micropore machining device for high-speed train damping system
CN214185578U (en) Bevel gear processing machine
CN210925199U (en) Modular multifunctional combined demonstration experiment machine tool
CN218745120U (en) Universal milling machine power head
CN220921579U (en) Drilling machine with auxiliary limiting structure

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant