Numerical control floor type boring and milling machine

Abstract

The invention discloses a numerical control floor type boring and milling machine and relates to the technical field of numerical control floor type boring and milling machines, the numerical control floor type boring and milling machine comprises a machine tool and a lifting table arranged on the machine tool, a spindle box is installed on the lifting table, and a cutter bar is fixed to the front end of the spindle box through a chuck. In the operation process of the numerical control floor type boring and milling machine, when the rotating speed of the cutter bar is high, the ball at the lower end of the supporting rod abuts against the outer side of the cutter bar through the transmission effect, and the cutter bar is extruded and supported in the rotating machining process through the abutting and extruding effect of the ball on the supporting rod and the outer side of the cutter bar; the cutter bar is prevented from swinging due to long using length and high-speed rotation in the machining process, the machining quality of the numerical control floor type boring and milling machine on workpieces is guaranteed, in the whole supporting process, the supporting effect is synchronously improved along with increase of the rotating speed of the cutter bar, and the supporting effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled floor-standing boring and milling machines, in particular to a numerically controlled floor-standing boring and milling machine. Background Art

[0002] CNC floor-standing boring and milling machines are high-precision, automated processing equipment that integrates CNC technology on the basis of traditional boring and milling machines. It is based on a floor-standing structure, has a large processing space and carrying capacity, and can perform various processing operations such as boring, milling, and drilling on large and heavy workpieces. CNC floor-standing boring and milling machines control the movement of each coordinate axis of the machine tool through the CNC system, thereby realizing the relative movement between the tool and the workpiece and completing various processing tasks. The operator compiles information such as processing technology and tool path into a CNC program and inputs it into the CNC system of the machine tool. According to the program instructions, the CNC system accurately controls the servo motor to drive the ball screw or linear guide of each coordinate axis, so that the worktable, spindle and other components move according to the predetermined trajectory, driving the tool to cut the workpiece. At the same time, the machine tool is also equipped with various sensors and detection devices to monitor the operating status and processing accuracy of the machine tool in real time, so as to perform automatic compensation and adjustment to ensure the processing quality.

[0003] During the cutting process of CNC floor-standing boring and milling machines, the longer tool bar can enable the tool to reach the position that is difficult to reach with ordinary tool bars. It is particularly suitable for processing workpieces with deep holes, inner cavities, complex cavities or special structures, such as the internal structure of the casing of an aircraft engine, the deep grooves of large molds, etc., which can effectively expand the processing capacity and application scope of the machine tool. However, as the tool bar length of the CNC floor-standing boring and milling machine increases, its rigidity will be relatively reduced. Under the action of cutting force, the tool bar is more likely to produce elastic deformation, resulting in swinging, which will cause vibration marks at the processing position, affecting the processing quality of the CNC floor-standing boring and milling machine on the workpiece. For this reason, we propose a CNC floor-standing boring and milling machine. Summary of the invention

[0004] The object of the present invention is to provide a numerically controlled floor-standing boring and milling machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a CNC floor-type boring and milling machine, comprising a machine tool and a lifting platform arranged on the machine tool, a spindle box is installed on the lifting platform, a tool rod is fixed to the front end of the spindle box through a chuck, and further comprising:

[0006] An annular mounting cover is arranged on the spindle box, the annular mounting cover and the spindle box are detachably mounted by bolts, and a support assembly for supporting the tool rod is arranged on the front side of the annular mounting cover;

[0007] The support components are provided in multiple groups, and the multiple groups of support components are arranged in a circular array on the outside of the knife rod. The support components include a mounting frame, a support rod is fixed to the lower end of the mounting frame, and the lower end of the support rod is rotatably connected to a ball for abutting against the outside of the knife rod through a ball groove. A connecting component for connecting to the mounting frame is provided on the front side of the annular mounting cover, an annular cavity is opened on the inner side of the annular mounting cover, and a pushing component for pushing the mounting frame is provided inside the annular cavity.

[0008] Preferably, the connecting assembly includes a fixing frame fixed to the front side of the annular mounting cover, the lower end of the fixing frame is slidably connected to a slide plate, a plurality of groups of sliding holes are provided on the mounting frame, each group of sliding holes is slidably connected to a guide rod, and one end of the guide rod is fixed to the fixing frame.

[0009] Preferably, the pushing assembly includes a slot opened on the annular mounting cover, the slot is communicated with the interior of the annular cavity, the interior of the slot is rotatably connected to a connecting plate via a pin shaft, one end of the connecting plate is rotatably connected to the mounting frame, and the interior of the annular cavity is provided with an extrusion assembly for extruding the connecting plate.

[0010] Preferably, the extrusion assembly includes an annular plate fixed inside the annular cavity, the annular plate is concentrically arranged with the annular cavity, a slide groove is provided on the annular plate, the extrusion plate is slidably connected to the slide groove, inclined surfaces are provided on both sides of the extrusion plate, the other end of the connecting plate is rotatably connected to the upper end of the extrusion plate, a telescopic assembly for telescopically connecting the extrusion plate is provided inside the annular cavity, a linkage ring is provided on the inner side of the annular cavity, the linkage ring is located on the inner side of the annular plate, and the linkage ring and the annular plate are concentrically arranged, a rotating assembly for rotatably connecting the linkage ring is provided inside the annular cavity, a transmission assembly for transmitting the extrusion plate is provided on the linkage ring, and a linkage assembly for connecting the transmission is provided between the linkage ring and the knife rod.

[0011] Preferably, the transmission components are provided in multiple groups, and the multiple groups of transmission components are arranged in a state of a ring array on the linkage ring.

[0012] Preferably, the transmission assembly includes a U-shaped frame fixed to the outside of the linkage ring, and a T-shaped transmission pin is slidably connected to the U-shaped frame for transmission against the inclined surface on the extrusion plate, and a first spring is sleeved on the outside of the T-shaped transmission pin.

[0013] Preferably, the telescopic assembly includes multiple groups of sleeves fixed inside the annular cavity, the sleeves are slidably connected with a sliding rod, one end of the sliding rod is fixed to the extrusion plate, and the outer side of each group of the sleeves is sleeved with a second spring, and the two ends of the second spring are respectively connected to the inner wall of the annular cavity and the extrusion plate.

[0014] Preferably, the linkage assembly includes multiple groups of sockets opened on the linkage ring, a baffle is fixed on the outer side of the knife rod, multiple groups of pins are fixed on the baffle, the pins and sockets are matched with each other, and each group of pins and sockets are arranged in a ring array.

[0015] Preferably, the rotating assembly comprises an annular groove opened on both sides of the linkage ring, and the interior of the annular groove is rotatably connected with an annular bar, and the annular bar is fixed to the inner wall of the annular cavity.

[0016] Preferably, the annular groove, the annular strip and the annular cavity are concentrically arranged, and the cross-sections of the annular groove and the annular strip are T-shaped.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] During the operation of the CNC floor-type boring and milling machine of the present invention, when the rotation speed of the tool rod is high, the ball at the lower end of the support rod is abutted against the outer side of the tool rod through the transmission effect, and the tool rod is squeezed and supported during the rotation processing through the abutment and extrusion effect of the ball on the support rod and the outer side of the tool rod, thereby preventing the tool rod from swinging due to its long length and high-speed rotation during the processing, thereby ensuring the processing quality of the workpiece by the CNC floor-type boring and milling machine, and during the entire supporting process, the supporting effect increases synchronously with the increase of the rotation speed of the tool rod, thereby ensuring the supporting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the annular mounting cover and the spindle box of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the linkage assembly and the rotating assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the driving component of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the extrusion assembly and the telescopic assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the transmission assembly structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the support assembly and the connection assembly of the present invention;

[0026] Figure 8 This is a physical picture of the CNC floor-standing boring and milling machine of the present invention.

[0027] In the figure: 101-machine tool; 102-lifting platform; 103-spindle box; 104-tool bar; 2-annular mounting cover; 301-mounting frame; 302-support rod; 303-ball; 401-fixed frame; 402-slide plate; 403-slide hole; 404-guide rod; 5-annular cavity; 601-slot; 602-pin shaft; 603-connecting plate; 701-annular plate; 702-slide groove; 703-extrusion plate; 704-inclined surface; 801-sleeve; 802-slide rod; 803-second spring; 9-linkage ring; 1001-U-shaped frame; 1002-T-type transmission pin; 1003-first spring; 1101-annular groove; 1102-annular strip; 1201-socket; 1202-baffle; 1203-pin. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figure 1-Figure 8 , a CNC floor-type boring and milling machine shown in the figure comprises a machine tool 101 and a lifting platform 102 arranged on the machine tool 101, a spindle box 103 is installed on the lifting platform 102, and a tool rod 104 is fixed to the front end of the spindle box 103 through a chuck;

[0031] It should be noted here that the spindle box 103 and the chuck are conventional operating components for driving and installing the tool rod 104, and are considered as prior art in this application, and will not be described in detail here;

[0032] Also includes:

[0033] An annular mounting cover 2 is arranged on the spindle box 103, and the annular mounting cover 2 and the spindle box 103 are detachably mounted by bolts, and a support assembly for supporting the tool rod 104 is arranged on the front side of the annular mounting cover 2;

[0034] There are multiple groups of support components, and the multiple groups of support components are arranged in a state of an annular array on the outside of the knife rod 104. The support components include a mounting frame 301, a support rod 302 is fixed to the lower end of the mounting frame 301, and a ball 303 used to abut against the outer side of the knife rod 104 is rotatably connected to the lower end of the support rod 302 through a ball groove. A connecting component for connecting the mounting frame 301 is arranged on the front side of the annular mounting cover 2, and an annular cavity 5 is opened on the inner side of the annular mounting cover 2. A pushing component for pushing the mounting frame 301 is arranged inside the annular cavity 5;

[0035] It should be noted here that: during the operation of the CNC floor-standing boring and milling machine, when the rotation speed of the tool rod 104 is high, the ball 303 at the lower end of the support rod 302 is abutted against the outer side of the tool rod 104 through the transmission effect, and the tool rod 104 is squeezed and supported during the rotation process through the abutment and extrusion effect of the ball 303 on the support rod 302 and the outer side of the tool rod 104, so as to avoid the tool rod 104 from swinging due to its long length and high-speed rotation during the processing, thereby ensuring the processing quality of the workpiece by the CNC floor-standing boring and milling machine, and in the entire support process, the support effect increases synchronously with the increase of the rotation speed of the tool rod 104, thereby ensuring the support effect.

[0036] Preferably, the connecting assembly includes a fixing frame 401 fixed to the front side of the annular mounting cover 2, a slide plate 402 is slidably connected to the lower end of the fixing frame 401, a plurality of sliding holes 403 are provided on the mounting frame 301, a guide rod 404 is slidably connected to each sliding hole 403, and one end of the guide rod 404 is fixed to the fixing frame 401;

[0037] It should be noted that: the fixing frame 401 and the slide plate 402 facilitate the sliding of the auxiliary mounting frame 301 after being subjected to force, and the multiple groups of guide rods 404 and the sliding holes 403 facilitate the stable lifting movement of the auxiliary mounting frame 301 after being subjected to force.

[0038] Preferably, the pushing component includes a slot 601 formed on the annular mounting cover 2, the slot 601 is communicated with the interior of the annular cavity 5, the interior of the slot 601 is rotatably connected to a connecting plate 603 through a pin 602, one end of the connecting plate 603 is rotatably connected to the mounting frame 301, and an extrusion component for extruding the connecting plate 603 is provided inside the annular cavity 5; the extrusion component includes an annular plate 701 fixed inside the annular cavity 5, the annular plate 701 is concentrically arranged with the annular cavity 5, a slide groove 702 is formed on the annular plate 701, and an extrusion plate 703 is slidably connected to the slide groove 702, and the extrusion plate 703 The two sides of the annular cavity 5 are provided with inclined surfaces 704, the other end of the connecting plate 603 is rotatably connected to the upper end of the extrusion plate 703, a telescopic component for telescopically connecting the extrusion plate 703 is arranged inside the annular cavity 5, a linkage ring 9 is arranged inside the annular cavity 5, the linkage ring 9 is located on the inner side of the annular plate 701, and the linkage ring 9 and the annular plate 701 are arranged concentrically, a rotating component for rotatably connecting the linkage ring 9 is arranged inside the annular cavity 5, a transmission component for transmitting the extrusion plate 703 is arranged on the linkage ring 9, and a linkage component for connecting the transmission is arranged between the linkage ring 9 and the knife rod 104;

[0039] It should be noted that: when the rotation speed of the knife bar 104 is high, the centrifugal force on the T-shaped transmission pin 1002 on the U-shaped frame 1001 is large through the transmission effect, so that the T-shaped transmission pin 1002 slides on the U-shaped frame 1001 for a long distance. At this time, one end of the T-shaped transmission pin 1002 abuts against the inclined surface 704 on the extrusion plate 703. In the process of abutting, the extrusion plate 703 is forced to slide in the slide groove 703 through the abutting and extruding effect of one end of the T-shaped transmission pin 1002 and the inclined surface 704. 02 moves toward the outside of the annular plate 701. During the movement of the extrusion plate 703, the connecting plate 603 is forced to rotate through the connection between the extrusion plate 703 and the connecting plate 603 and the rotatable connection between the pin shaft 602 on the slot 601 and the connecting plate 603. During the rotation of the connecting plate 603, the mounting frame 301 is pushed to move toward the outside of the knife rod 104. During the movement of the mounting frame 301, the ball 303 at the lower end of the support rod 302 is pressed against the outside of the knife rod 104.

[0040] Preferably, there are multiple transmission components, and the multiple transmission components are arranged in a ring array on the linkage ring 9;

[0041] It should be noted here that the efficiency and stability of the transmission are guaranteed by using multiple sets of transmission components.

[0042] Preferably, the transmission assembly includes a U-shaped frame 1001 fixed to the outside of the linkage ring 9, and a T-shaped transmission pin 1002 for abutting against the inclined surface 704 on the extrusion plate 703 is slidably connected to the U-shaped frame 1001 for transmission, and a first spring 1003 is sleeved on the outside of the T-shaped transmission pin 1002;

[0043] It should be noted here that: when the rotation speed of the knife rod 104 is high, through the transmission effect, the centrifugal force exerted on the T-shaped transmission pin 1002 on the U-shaped frame 1001 is relatively large, so that the T-shaped transmission pin 1002 slides a longer distance on the U-shaped frame 1001. At this time, one end of the T-shaped transmission pin 1002 is abutted against the inclined surface 704 on the extrusion plate 703. In the process of abutting, through the abutting and extruding effect of one end of the T-shaped transmission pin 1002 and the inclined surface 704, the extrusion plate 703 is forced to move toward the outside of the annular plate 701 on the slide groove 702.

[0044] Preferably, the telescopic assembly includes a plurality of sets of sleeves 801 fixed inside the annular cavity 5, a slide bar 802 is slidably connected to the sleeve 801, one end of the slide bar 802 is fixed to the extrusion plate 703, and a second spring 803 is sleeved on the outer side of each set of sleeves 801, and the two ends of the second spring 803 are respectively connected to the inner wall of the annular cavity 5 and the extrusion plate 703;

[0045] It should be noted here that: the multiple sets of sleeves 801 and slide bars 802 are used to assist the stable telescopic movement of the squeeze plate 703 after being stressed, and the second spring 803 is used to reset the squeeze plate 703 after the contraction movement.

[0046] Preferably, the linkage assembly includes a plurality of groups of jacks 1201 provided on the linkage ring 9, a baffle 1202 is fixed to the outer side of the knife rod 104, a plurality of groups of latches 1203 are fixed to the baffle 1202, the latches 1203 and the jacks 1201 are matched with each other, and each group of latches 1203 and the jacks 1201 are arranged in a state of an annular array;

[0047] It should be noted here that: during the installation of the knife rod 104, the multiple groups of pins 1203 of the baffle 1202 on the knife rod 104 are respectively inserted into the internal groups of sockets 1201 of the linkage ring 9. After the groups of pins 1203 are inserted and connected, along with the subsequent rotation of the knife rod 104, the linkage ring 9 is driven to rotate through the connection and transmission effect between the groups of pins 1203 and the groups of sockets 1201.

[0048] Preferably, the rotating assembly includes an annular groove 1101 opened on both sides of the linkage ring 9, and the inner part of the annular groove 1101 is rotatably connected with an annular strip 1102, and the annular strip 1102 is fixed to the inner wall of the annular cavity 5;

[0049] It should be noted here that the annular groove 1101 and the annular strip 1102 facilitate the rotatable connection of the linkage ring 9 .

[0050] Preferably, the annular groove 1101, the annular strip 1102 and the annular cavity 5 are arranged concentrically, and the cross-sections of the annular groove 1101 and the annular strip 1102 are T-shaped;

[0051] It should be noted here that the concentric arrangement between the annular groove 1101, the annular strip 1102 and the annular cavity 5 facilitates more stable transmission, and the T-shaped cross-section of the annular groove 1101 and the annular strip 1102 facilitates more stable transmission between the annular groove 1101 and the annular strip 1102.

[0052] In this scheme: a CNC floor-standing boring and milling machine comprises the following steps:

[0053] During the operation of the CNC floor-type boring and milling machine, the tool bar 104 is fixed on the spindle box 103 through a chuck. After the installation is completed, the tool bar 104 is driven by the spindle box 103 to rotate, and the workpiece is cut by the rotation of the tool bar 104;

[0054] During the installation of the knife bar 104, the multiple groups of latches 1203 of the baffle 1202 on the knife bar 104 are respectively inserted into the inside of the groups of jacks 1201 of the linkage ring 9. After the groups of latches 1203 are inserted and connected, along with the subsequent rotation of the knife bar 104, the linkage ring 9 is driven to rotate through the connection and transmission between the groups of latches 1203 and the groups of jacks 1201. During the rotation of the linkage ring 9, the U-shaped frame 1001 is driven to move synchronously. During the movement of the U-shaped frame 1001, the T-shaped transmission pins 1002 on the U-shaped frame 1001 are forced to move away from the linkage ring 9 through the action of centrifugal force.

[0055] During the movement of the T-shaped transmission pin 1002, when the rotation speed of the knife rod 104 is low, the centrifugal force on the T-shaped transmission pin 1002 on the U-shaped frame 1001 is low through the transmission action, so that the sliding distance of the T-shaped transmission pin 1002 on the U-shaped frame 1001 is limited. At this time, one end of the T-shaped transmission pin 1002 does not abut against the inclined surface 704 on the extrusion plate 703. When the rotation speed of the knife rod 104 is high, the centrifugal force on the T-shaped transmission pin 1002 on the U-shaped frame 1001 is large through the transmission action, so that the sliding distance of the T-shaped transmission pin 1002 on the U-shaped frame 1001 is long. At this time, one end of the T-shaped transmission pin 1002 abuts against the inclined surface 704 on the extrusion plate 703. During the abutment process, the extrusion plate 703 is forced to move toward the outside of the annular plate 701 on the slide groove 702 through the abutment and extrusion effect of one end of the T-shaped transmission pin 1002 and the inclined surface 704. Side movement. During the movement of the extrusion plate 703, the connecting plate 603 is forced to rotate through the connection between the extrusion plate 703 and the connecting plate 603 and the rotatable connection between the pin shaft 602 on the slot 601 and the connecting plate 603. During the rotation of the connecting plate 603, the mounting frame 301 is forced to move toward the outside of the tool rod 104. During the movement of the mounting frame 301, the ball 303 at the lower end of the support rod 302 is abutted against the outside of the tool rod 104. Through the abutment and extrusion effect between the ball 303 on the support rod 302 and the outside of the tool rod 104, the tool rod 104 is squeezed and supported during the rotation process, so that the tool rod 104 is prevented from swinging due to its long length and high-speed rotation during the processing, thereby ensuring the processing quality of the workpiece by the CNC floor-standing boring and milling machine, and during the entire support process, the support effect increases synchronously with the increase in the rotation speed of the tool rod 104, thereby ensuring the support effect.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC floor-type boring and milling machine, comprising: A machine tool (101) and a lifting platform (102) arranged on the machine tool (101), wherein a spindle box (103) is installed on the lifting platform (102), and a tool rod (104) is fixed at the front end of the spindle box (103) via a chuck; It is characterized by further comprising: an annular mounting cover (2) disposed on the spindle box (103), the annular mounting cover (2) and the spindle box (103) being detachably mounted via bolts, and a support assembly for supporting a tool rod (104) being disposed on the front side of the annular mounting cover (2); The support components are provided in multiple groups, and the multiple groups of support components are arranged in a state of an annular array on the outer side of the knife rod (104), and the support components include a mounting frame (301), a support rod (302) is fixed to the lower end of the mounting frame (301), and the lower end of the support rod (302) is rotatably connected to a ball (303) for abutting against the outer side of the knife rod (104) through a ball groove, and a connecting component for connecting the mounting frame (301) is provided on the front side of the annular mounting cover (2), and an annular cavity (5) is opened on the inner side of the annular mounting cover (2), and a pushing component for pushing the mounting frame (301) is provided inside the annular cavity (5).

2. A CNC floor-type boring and milling machine according to claim 1, characterized in that: The connection assembly comprises a fixing frame (401) fixed to the front side of the annular mounting cover (2); the lower end of the fixing frame (401) is slidably connected to a slide plate (402); a plurality of groups of sliding holes (403) are provided on the mounting frame (301); each group of the sliding holes (403) is slidably connected to a guide rod (404); one end of the guide rod (404) is fixed to the fixing frame (401).

3. A CNC floor-type boring and milling machine according to claim 2, characterized in that: The pushing component comprises a slot (601) formed on the annular mounting cover (2), the slot (601) being communicated with the interior of the annular cavity (5), the interior of the slot (601) being rotatably connected to a connecting plate (603) via a pin shaft (602), one end of the connecting plate (603) being rotatably connected to the mounting frame (301), and an extrusion component for extruding the connecting plate (603) is provided inside the annular cavity (5).

4. A CNC floor-type boring and milling machine according to claim 3, characterized in that: The extrusion assembly comprises an annular plate (701) fixed inside the annular cavity (5), the annular plate (701) and the annular cavity (5) are arranged concentrically, a slide groove (702) is provided on the annular plate (701), an extrusion plate (703) is slidably connected to the slide groove (702), inclined surfaces (704) are provided on both sides of the extrusion plate (703), the other end of the connecting plate (603) is rotatably connected to the upper end of the extrusion plate (703), and a groove (704) is provided inside the annular cavity (5) for rotating the extrusion plate (703). ) a telescopic component that can be telescopically connected, a linkage ring (9) is arranged on the inner side of the annular cavity (5), the linkage ring (9) is located on the inner side of the annular plate (701), and the linkage ring (9) and the annular plate (701) are arranged concentrically, a rotating component for rotatably connecting the linkage ring (9) is arranged inside the annular cavity (5), a transmission component for transmitting the extrusion plate (703) is arranged on the linkage ring (9), and a linkage component for connecting the transmission is arranged between the linkage ring (9) and the knife rod (104).

5. A CNC floor-type boring and milling machine according to claim 4, characterized in that: The transmission components are arranged in multiple groups, and the multiple groups of transmission components are arranged in a state of an annular array on the linkage ring (9).

6. A CNC floor-type boring and milling machine according to claim 5, characterized in that: The transmission assembly comprises a U-shaped frame (1001) fixed to the outside of the linkage ring (9), a T-shaped transmission pin (1002) slidably connected to the U-shaped frame (1001) for resisting against the inclined surface (704) on the extrusion plate (703) for transmission, and a first spring (1003) is sleeved on the outside of the T-shaped transmission pin (1002).

7. A CNC floor-type boring and milling machine according to claim 4, characterized in that: The telescopic assembly comprises a plurality of groups of sleeves (801) fixed inside the annular cavity (5), a sliding rod (802) being slidably connected to the sleeves (801), one end of the sliding rod (802) being fixed to an extrusion plate (703), a second spring (803) being sleeved on the outer side of each group of the sleeves (801), and two ends of the second spring (803) being respectively connected to the inner wall of the annular cavity (5) and the extrusion plate (703).

8. The CNC floor-type boring and milling machine according to claim 4, characterized in that: The linkage assembly comprises a plurality of groups of sockets (1201) provided on the linkage ring (9); a baffle (1202) is fixed on the outer side of the knife rod (104); a plurality of groups of latches (1203) are fixed on the baffle (1202); the latches (1203) and the sockets (1201) are arranged to match each other, and each group of latches (1203) and the sockets (1201) are arranged in a ring array.

9. The CNC floor-type boring and milling machine according to claim 4, characterized in that: The rotating assembly comprises an annular groove (1101) provided on both sides of the linkage ring (9) at the front and rear, the annular groove (1101) is internally rotatably connected with an annular strip (1102), and the annular strip (1102) is fixed to the inner wall of the annular cavity (5).

10. A CNC floor-type boring and milling machine according to claim 9, characterized in that: The annular groove (1101), the annular strip (1102) and the annular cavity (5) are arranged concentrically, and the cross-sections of the annular groove (1101) and the annular strip (1102) are T-shaped.

Images