Machining numerical control lathe capable of automatically changing tool bit

Abstract

The utility model relates to the technical field of numerical control lathes, in particular to a machining numerical control lathe capable of automatically changing tool bits, which comprises a machine body provided with a drilling machine and a drill bit, a position adjusting mechanism used for adjusting the drilling machine to the drill bit is arranged on the right side of the machine body, and a feeding mechanism used for conveying the drill bit step by step is arranged on the left side of the machine body. The drilling machine and the drill bit which are matched with each other are arranged, the drilling machine comprises the double-end plum-blossom-shaped key and the vertically upward threaded bolt, the drill bit comprises the double-end plum-blossom-shaped opening corresponding to the double-end plum-blossom-shaped key, and the lifting circular ring elastically supported by the elastic supporting piece abuts against the double-end plum-blossom-shaped key so that the lifting support provided with the drilling machine can be driven to vertically ascend and descend. The requirements of the drilling machine for tool bit dismounting and drilling machining are met; the traction eccentric shaft and the I-shaped rotary table are arranged on the machine body, so that the I-shaped rotary table can rotate in a stepping mode, and then the positions of the six drill bits distributed in the circumferential direction at equal intervals can be adjusted according to the loading and unloading requirements.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, and in particular to a machining CNC lathe with automatic tool changing. Background Technology

[0002] To meet diverse lathe machining needs, existing multi-tool CNC lathes generally include a workpiece clamping mechanism and a tool clamping mechanism. The workpiece clamping mechanism is equipped with a feed drive mechanism, and the tool clamping mechanism is equipped with a displacement drive mechanism.

[0003] Traditional single-head lathes can only hold one type of tool at a time for machining. If other machining needs are required, the tool must be changed manually repeatedly. For example, a CNC lathe tool changing mechanism disclosed in CN218926264U can automatically tighten and loosen the bolts on the tool holder by using a drive motor and a tightening sleeve, without the need for workers to use wrenches to remove and install them. However, repeatedly adjusting the position of the drill and the tool head is time-consuming and laborious, and it is difficult to achieve precise docking between the drill and the drill bit. This not only affects the docking efficiency, but also cannot guarantee the safety of the drill and the tool head. Utility Model Content

[0004] The purpose of this invention is to solve the problem of efficient tool head replacement for drilling rigs in the prior art, and to propose an automatic tool head changing CNC lathe.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A CNC lathe with automatic tool changing includes a machine body equipped with a drill and a drill bit. The right side of the machine body is provided with an adjustment mechanism for adjusting the drill towards the drill bit, and the left side of the machine body is provided with a feeding mechanism for step-by-step conveying of the drill bit.

[0007] Preferably, the drilling rig includes a double-ended spline fixedly installed on the output end of the drilling machine, and two threaded bolts for installing nuts are integrally connected to the double-ended spline.

[0008] Preferably, the number of drill bits is six, and the six drill bits are circumferentially and equally distributed on the feeding mechanism.

[0009] Preferably, the drill bit includes a mounting end integrally connected to the cutting head, the mounting end having a double-layer cavity and a double-ended spline opening that connects the double-layer cavity and is adapted to the double-ended spline key, an elastic support member being provided in the double-layer cavity, a lifting ring being fixedly installed on the elastic support member, and a limiting through hole for movable fitting of the threaded bolt being provided at the top of the mounting end.

[0010] Preferably, the adjustment mechanism includes a traction turntable rotatably mounted on the machine body, a reciprocating swing arm rotatably mounted on the machine body and movably pulled by the traction turntable, a guide elongated hole being provided in the machine body, and a movable bracket movably pulled by the reciprocating swing arm being slidably mounted in the guide elongated hole.

[0011] The adjustment mechanism also includes a guide groove formed in the movable support, a ball screw is rotatably installed in the guide groove, a lifting nut is slidably fitted on the ball screw in the guide groove, and a lifting support that is slidably installed on the movable support and used to rotate and set the drilling rig is fixedly connected to the lifting nut.

[0012] Preferably, the traction turntable is integrally connected with an eccentrically arranged traction bolt, the reciprocating swing arm has a traction elongated hole for slidingly fitting the traction bolt, and the movable bracket has a driven through hole for movably fitting the reciprocating swing arm.

[0013] Preferably, the feeding mechanism includes a traction eccentric shaft rotatably mounted on the machine body, an I-shaped turntable rotatably mounted on the machine body, six driven ends corresponding to the traction eccentric shaft integrally connected to the lower end of the I-shaped turntable, and six placement platforms for placing drill bits fixedly provided on the upper end of the I-shaped turntable.

[0014] Preferably, the six driven ends and the six placement platforms are circumferentially equidistant.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This utility model provides a matching drill and drill bit. The drill includes a double-ended spline and a vertically upward-facing threaded bolt. The drill bit includes a double-ended spline corresponding to the double-ended spline. A lifting ring supported by an elastic support member abuts against the double-ended spline. By clamping the drill and drill bit and rotating them 90°, the tool head can be easily installed.

[0017] 2. This utility model is equipped with a reciprocating swing arm on the machine body, which is traction-driven by a traction turntable. The reciprocating swing arm drives the moving bracket to move linearly back and forth. A matching ball screw and lifting nut are installed on the moving bracket to drive the lifting bracket on which the drilling machine is installed to move vertically up and down, so as to meet the needs of the drilling machine to disassemble and assemble the cutting head and perform drilling.

[0018] 3. This utility model is equipped with a traction eccentric shaft and an I-shaped turntable on the machine body, so that the I-shaped turntable can perform step-by-step rotational motion, thereby allowing the six circumferentially equidistant drill bits to be positioned according to loading and unloading needs. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of a CNC lathe with an automatic tool changer proposed in this utility model;

[0020] Figure 2 This is a bottom view of a CNC lathe with an automatic tool changer proposed in this utility model;

[0021] Figure 3 This is a cross-sectional view of a CNC lathe with an automatic tool changer proposed in this utility model;

[0022] Figure 4 This is a side view of a CNC lathe with an automatic tool changer according to the present invention.

[0023] Figure 5 This is an enlarged schematic diagram of part A of the CNC lathe with automatic tool changing mechanism proposed in this utility model.

[0024] In the picture:

[0025] 1. Organism;

[0026] 2. Adjustment mechanism; 21. Traction turntable; 22. Reciprocating rocker arm; 23. Guide elongated hole; 24. Moving bracket; 25. Guide vertical groove; 26. Ball screw; 27. Lifting nut; 28. Lifting bracket;

[0027] 3. Feeding mechanism; 31. Traction eccentric shaft; 32. I-shaped turntable; 33. Driven end; 34. Placement table;

[0028] 4. Drilling rig; 41. Double-ended key; 42. Threaded bolt;

[0029] 5. Drill bit; 51. Mounting end; 52. Double-layer cavity; 53. Double-ended plum blossom mouth; 54. Elastic support; 55. Lifting ring; 56. Limiting through hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-5 A CNC lathe with automatic tool changing includes a body 1 equipped with a drill 4 and a drill bit 5. It should be noted that:

[0032] The drilling rig 4 includes a double-ended spline key 41 fixedly installed on the output end of the drilling machine. Two threaded bolts 42 for installing nuts are integrally connected to the double-ended spline key 41. When the double-ended spline key 41 corresponds to the double-ended spline opening 53, the double-ended spline key 41 is pressed into the double-layer cavity 52 and pressure is applied downward to the lifting ring 55.

[0033] The drill bit 5 includes an integrally connected mounting end 51 connected to the cutter head. The mounting end 51 has a double-layer cavity 52 and a double-ended spline opening 53 that connects to the double-layer cavity 52 and is adapted to the double-ended spline key 41. An elastic support member 54 is provided inside the double-layer cavity 52. ​​A lifting ring 55 is fixedly installed on the elastic support member 54. A limiting through hole 56 for movable fitting of the threaded bolt 42 is provided at the top of the mounting end 51. Under the support of the elastic support member 54, the lifting ring 55 supports the double-ended spline key 41 upward. At the same time, by turning the double-ended spline key 41 to a 90° deflection, the threaded bolt 42 is fitted into the limiting through hole 56. By tightening the nut on the threaded bolt 42, the snap-fit ​​connection between the drill rig 4 and the drill bit 5 can be achieved.

[0034] The right side of the main body 1 is equipped with an adjustment mechanism 2 for adjusting the orientation of the drilling rig 4 toward the drill bit 5. See the instruction manual for details. Figure 2 With appendix Figure 4 :

[0035] On one hand, the adjustment mechanism 2 includes a traction turntable 21 rotatably mounted on the machine body 1, a reciprocating swing arm 22 rotatably mounted on the machine body 1 and movably pulled by the traction turntable 21, a guide elongated hole 23 is opened in the machine body 1, a movable bracket 24 slidably mounted in the guide elongated hole 23 and movably pulled by the reciprocating swing arm 22, and a first drive motor is provided on the machine body 1 for driving the traction turntable 21 to rotate. The reciprocating swing arm 22 is used to convert the rotational motion of the traction turntable 21 into the linear reciprocating movement of the movable bracket 24, thereby realizing the horizontal position adjustment of the drilling rig 4.

[0036] On the other hand, the adjustment mechanism 2 also includes a guide groove 25 opened in the movable support 24. A ball screw 26 is rotatably installed in the guide groove 25. A lifting nut 27 is slidably fitted in the guide groove 25 on the ball screw 26. A lifting support 28, which is slidably installed on the movable support 24 and used to rotate the drilling rig 4, is fixedly connected to the lifting nut 27. A second drive motor is provided on the movable support 24 to drive the ball screw 26 to rotate. Under the guiding and limiting action of the guide groove 25, the lifting nut 27 drives the lifting support 28 to move vertically. After the double-headed spline 41 is deflected by 90° on the lifting support 28, the angle is limited, thereby realizing the fixed connection between the drilling rig 4 and the drill bit 5.

[0037] A feeding mechanism 3 for conveying the stepping drill bit 5 is located on the left side of the machine body 1. Please refer to the instruction manual for details. Figure 2 With appendix Figure 3The feeding mechanism 3 includes a traction eccentric shaft 31 rotatably mounted on the machine body 1. An I-shaped turntable 32 is rotatably mounted on the machine body 1. The lower end of the I-shaped turntable 32 is integrally connected to six driven ends 33 corresponding to the traction eccentric shaft 31. The upper end of the I-shaped turntable 32 is fixedly provided with six placement platforms 34 for placing drill bits 5. It should be noted that by circumferentially setting six drill bits 5 and then performing step feeding, the drill bit 5 to be replaced can quickly move to the predetermined position of the drilling machine 4, thereby ensuring docking efficiency.

[0038] There are six drill bits 5, and the six drill bits 5 are equidistantly distributed around the feeding mechanism 3.

[0039] The traction turntable 21 is integrally connected with an eccentrically set traction bolt, the reciprocating swing rod 22 has a traction elongated hole for slidingly fitting the traction bolt, and the movable bracket 24 has a driven through hole for movably fitting the reciprocating swing rod 22, so as to realize the indirect traction drive of the traction turntable 21 to the movable bracket 24.

[0040] The six driven ends 33 and the six placement platforms 34 are all circumferentially equidistant.

[0041] It should be noted that the specific models and specifications of the drive motor, drilling rig 4 and drill bit 5 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technology in this field, so they will not be elaborated here.

[0042] The functional principle of this utility model can be explained through the following operation methods:

[0043] Control the rotation of the traction eccentric shaft 31 so that the I-shaped turntable 32 rotates step by step until the drill bit 5 that needs to be replaced is transferred to the predetermined position.

[0044] Control the rotation of the traction turntable 21 to make the reciprocating swing arm 22 swing back and forth, so as to drive the moving bracket 24 to move closer to the changing drill bit 5 along the guide hole 23. Control the rotation of the ball screw 26 on the moving bracket 24, and use the lifting nut 27 to drive the drill 4 on the lifting bracket 28 to move closer to the changing drill bit 5.

[0045] The double-ended spline key 41 is vertically inserted into the double-layer cavity 52 and contacts the lifting ring 55. The double-ended spline key 41 is rotated to 90° and then released, so that the threaded bolt 42 is fitted into the limiting through hole 56. The nut is then tightened on the threaded bolt 42.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A CNC lathe with automatic tool changing, comprising a machine body (1) equipped with a drilling rig (4) and a drill bit (5), characterized in that, The machine body (1) is provided with a positioning mechanism (2) for adjusting the drilling machine (4) toward the drill bit (5) on the right side, and a feeding mechanism (3) for step-by-step conveying of the drill bit (5) is provided on the left side of the machine body (1).

2. The CNC lathe with automatic tool changer according to claim 1, characterized in that, The drilling rig (4) includes a double-ended spline key (41) fixedly installed on the output end of the drilling rig, and two threaded bolts (42) for installing nuts are integrally connected on the double-ended spline key (41).

3. The CNC lathe with automatic tool changer according to claim 2, characterized in that, The number of drill bits (5) is six, and the six drill bits (5) are equidistantly distributed on the feeding mechanism (3) in the circumferential direction.

4. The CNC lathe with automatic tool changer according to claim 3, characterized in that, The drill bit (5) includes an integrally connected mounting end (51) on the cutter head. The mounting end (51) has a double-layer cavity (52) and a double-ended spline opening (53) that connects to the double-layer cavity (52) and is adapted to the double-ended spline key (41). An elastic support member (54) is provided inside the double-layer cavity (52). A lifting ring (55) is fixedly installed on the elastic support member (54). A limiting through hole (56) for movable fitting of the threaded bolt (42) is provided at the top of the mounting end (51).

5. The CNC lathe with automatic tool changer according to claim 1, characterized in that, The adjustment mechanism (2) includes a traction turntable (21) rotatably mounted on the body (1), a reciprocating swing rod (22) rotatably mounted on the body (1) and movably pulled by the traction turntable (21), a guide elongated hole (23) is provided in the body (1), and a movable bracket (24) movably pulled by the reciprocating swing rod (22) is slidably mounted in the guide elongated hole (23); The adjustment mechanism (2) further includes a guide groove (25) opened in the movable support (24), a ball screw (26) is rotatably installed in the guide groove (25), a lifting nut (27) is provided on the ball screw (26) and slidably fitted in the guide groove (25), and a lifting bracket (28) slidably installed on the movable support (24) and used to rotate the drilling rig (4) is fixedly connected to the lifting nut (27).

6. A CNC lathe with an automatic tool changer according to claim 5, characterized in that, The traction turntable (21) is integrally connected with an eccentrically set traction bolt, the reciprocating swing rod (22) has a traction long hole for slidingly fitting the traction bolt, and the movable bracket (24) has a driven through hole for movably fitting the reciprocating swing rod (22).

7. A CNC lathe with an automatic tool changer according to claim 6, characterized in that, The feeding mechanism (3) includes a traction eccentric shaft (31) rotatably mounted on the machine body (1). An I-shaped turntable (32) is rotatably mounted on the machine body (1). The lower end of the I-shaped turntable (32) is integrally connected to six driven ends (33) corresponding to the traction eccentric shaft (31), and the upper end of the I-shaped turntable (32) is fixedly provided with six placement platforms (34) for placing drill bits (5).

8. A CNC lathe with an automatic tool changer according to claim 7, characterized in that, The six driven ends (33) and the six placement platforms (34) are circumferentially equidistant.

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