A machining center numerical control planer type milling machine

Abstract

The application relates to a gantry milling machine technical field, in particular to a machining center numerical control gantry milling machine, which comprises a machine table, the upper side of the machine table is provided with a longitudinal sliding table and a portal, one side of the portal is provided with a transverse sliding table, one side of the transverse sliding table is provided with a vertical sliding table, a main shaft motor is installed on one side of the vertical sliding table through a connecting plate, and a milling cutter is installed on the driving end of the main shaft motor through a main shaft. The sleeve in the iron filings cutting and collecting mechanism can be combined with the main shaft through the clutch mechanism and the iron filings cutting and collecting mechanism, so that the sleeve, the collecting cylinder, the shovel plate and the cutting knife can be driven to rotate synchronously with the main shaft, the long iron filings extending into the inner side of the outer cylinder through the through hole can be cut off when the cutting knife rotates, long iron filings can be prevented from winding on the cutter or the outer side of the workpiece, the workpiece surface can be prevented from being scratched by the long iron filings, and the long iron filings can be prevented from splashing around to cause harm to nearby personnel.

Description

Technical Field

[0001] The invention relates to the technical field of gantry milling machines, in particular to a numerically controlled gantry milling machine for a machining center. Background Art

[0002] A milling machine is a machine tool that uses a milling cutter to mill workpieces. It mainly refers to a machine tool that uses a milling cutter to process various surfaces on the workpiece. Usually, the rotation of the milling cutter is the main motion, and the movement of the workpiece and milling cutter is the feed motion. It can process planes and grooves, as well as various curved surfaces and gears. A CNC milling machine is a machine tool that integrates a digital control system on an ordinary milling machine and can perform milling processing more accurately under the control of program code.

[0003] In order to avoid the generation of continuous iron chips during milling, existing milling cutters are provided with chip grooves on the outside for the discharge of iron chips generated by milling. However, when the milling machine processes materials with strong plasticity (such as low-carbon steel, aluminum, copper, etc.), as the milling proceeds, spiral continuous long iron chips will be generated on the outside of the milling cutter. These iron chips are not easy to break off. As the length of the iron chips becomes longer and longer, the long iron chips are easily entangled with the outer surface of the milling cutter and the workpiece, which may scratch the surface of the workpiece at the least, or be thrown around by the rapid rotation of the milling cutter at the worst, causing injuries to nearby workers. Summary of the Invention

[0004] The object of the present invention is to provide a CNC gantry milling machine for a machining center to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is: a CNC gantry milling machine in a machining center, comprising a machine table, a longitudinal slide and a gantry are provided on the upper side of the machine table, a transverse slide is provided on one side of the gantry, a vertical slide is provided on one side of the transverse slide, a spindle motor is installed on one side of the vertical slide through a connecting plate, a milling cutter is installed on the driving end of the spindle motor through the spindle, and further comprising: an iron chip cutting and collecting mechanism arranged on the outside of the spindle; the iron chip cutting and collecting mechanism comprises an outer cylinder fixed to the lower end of the connecting plate, a sleeve movably sleeved on the outside of the spindle, an end cover is provided at the lower end of the outer cylinder, a plurality of through holes are opened on the end cover, two collecting cylinders are fixed on both sides of the sleeve, a shovel plate is fixed on one side of the two collecting cylinders, a cutting knife is provided on the side of the two shovel plates, a rotating shaft is rotatably connected to the inner side of the two collecting cylinders, a spiral blade is fixed on the outer side of the two rotating shafts, and a rubber wheel located on the outer side of the collecting cylinder is fixed at one end of the two rotating shafts; and further comprising a clutch mechanism for combining and separating the sleeve and the spindle.

[0006] Preferably, the clutch mechanism includes a first friction plate fixed to the upper end of the sleeve, a spline sleeve fixed to the outside of the main shaft, and an electromagnet installed on the upper side of the two collecting cylinders. The outer sliding sleeve of the spline sleeve is provided with a spline sleeve, and a push-pull plate is movably provided on the outer side of the spline sleeve. The lower end of the spline sleeve is fixed with a second friction plate.

[0007] Preferably, the push-pull plate is rotatably connected to the outer side of the spline sleeve through a bearing.

[0008] Preferably, a friction ring is fixed on the upper side of the end cover at positions corresponding to the two rubber wheels, and the friction ring is made of rubber material.

[0009] Preferably, the two shovel plates are both made of ferromagnetic material.

[0010] Preferably, a collecting port is provided on one side of each of the two collecting cylinders, two guide plates are fixed on the upper sides of each of the two shovel plates, and one end of the four guide plates is aligned with the two ends of the two collecting ports respectively.

[0011] Preferably, the two cutting knives are fixed to the sides of the two shovel plates respectively by screws.

[0012] Preferably, an iron chip guide mechanism is provided on the lower side of the end cover at the edge position; the iron chip guide mechanism includes an outer ring fixed on the lower side of the end cover, an upper conical ring is fixed on the inner side of the outer ring at the upper edge position, and a lower conical ring is fixed on the inner side of the outer ring at the lower edge position, the upper edge of the lower conical ring is located on the inner side of the lower conical ring, and an annular partition is fixed between the upper edge of the lower conical ring and the lower edge of the upper conical ring, a plurality of air jet holes are evenly opened on the surface of the annular partition, and also includes a blowing mechanism for blowing air toward the inner side of the outer ring.

[0013] Preferably, the blowing mechanism is an air pump installed on the outside of the door frame, and the air outlet of the air pump is connected to the inner side of the outer ring through an air pipe.

[0014] Preferably, the upper edge diameters of the lower conical ring and the upper conical ring are both smaller than the lower edge diameters.

[0015] The present invention provides a CNC gantry milling machine for a machining center by improvement, which has the following improvements and advantages compared with the prior art:

[0016] One: the sleeve in the iron filings cutting and collecting mechanism can be combined with the main shaft, so that the sleeve, the collecting cylinder, the shovel plate and the cutting knife can rotate synchronously with the main shaft, the long iron filings extending into the inside of the outer cylinder through the through hole can be cut off when the cutting knife rotates, so that the long iron filings can be prevented from winding around the tool or the outside of the workpiece, the surface of the workpiece can be prevented from being scratched by the long iron filings, the production quality of the workpiece is ensured, and the long iron filings can be prevented from splashing around to cause harm to nearby personnel.

[0017] Secondly, the rotation of the collecting cylinder around the main shaft can drive the rotating shaft and the spiral blade inside the collecting cylinder to rotate, the iron filings entering the inside of the collecting cylinder can be pushed to one end of the collecting cylinder, so that the iron filings can be collected at the one end of the inside of the collecting cylinder, and the cut iron filings can be prevented from falling outward and falling on the surface of the workpiece and the workbench again.

[0018] Thirdly, the air blowing mechanism arranged on the lower side of the end cover can spray the airflow flowing upward obliquely below the end cover, the sprayed airflow flows along the inner wall of the upper conical ring, the upper end of the long iron filings can be blown by the airflow of the inner wall of the upper conical ring, so that the upper end of the long iron filings can be concentrated to the position of the through hole, the upper end of the long iron filings can be more accurately extended to the inside of the outer cylinder through the through hole, so that the long iron filings can be cut off sufficiently and prevented from winding outward. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0021] Figure 2 is a schematic view of the partial sectional structure of the present application;

[0022] Figure 3 is a schematic view of the Figure 2 is a schematic view of the enlarged structure of A in the present application;

[0023] Figure 4 is a schematic view of the internal structure of the outer cylinder in the present application;

[0024] Figure 5 is a schematic view of the disassembled structure of the iron filings cutting and collecting mechanism in the present application;

[0025] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the outer ring, upper conical ring and lower conical ring in the present invention.

[0027] Reference numerals:

[0028] 1. Machine platform; 2. Longitudinal slide; 3. Gantry; 4. Horizontal slide; 5. Vertical slide; 6. Connecting plate; 7. Spindle motor; 8. Spindle; 9. Milling cutter; 101. Outer cylinder; 102. End cover; 103. Through hole; 104. Sleeve; 105. Collecting cylinder; 106. Shovel plate; 107. Cutting knife; 108. Collecting port; 109. Rotating shaft; 110. Spiral blade; 111. Sealing cover; 112. Rubber wheel; 113. Friction ring; 114, guide plate; 201, first friction plate; 202, splined sleeve; 203, splined sleeve; 204, push-pull plate; 205, second friction plate; 206, return spring; 207, electromagnet; 208, photoelectric sensor; 209, extension tube; 301, outer ring; 302, lower conical ring; 303, upper conical ring; 304, annular partition; 305, jet hole; 306, air pump; 307, air pipe. DETAILED DESCRIPTION

[0029] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] The present invention provides a CNC gantry milling machine for a machining center through improvement. The technical solution of the present invention is:

[0031] like Figures 1 to 7As shown, the embodiment of the present invention provides a CNC gantry milling machine for a machining center, comprising a machine table 1, a longitudinal slide 2 and a gantry 3 are provided on the upper side of the machine table 1, a transverse slide 4 is provided on one side of the gantry 3, a vertical slide 5 is provided on one side of the transverse slide 4, a spindle motor 7 is installed on one side of the vertical slide 5 through a connecting plate 6, a milling cutter 9 is installed on the driving end of the spindle motor 7 through a spindle 8, and further comprising: an iron chip cutting and collecting mechanism arranged on the outside of the spindle 8; the iron chip cutting and collecting mechanism comprises an outer cylinder 101 fixed to the lower end of the connecting plate 6, a sleeve 104 movably sleeved on the outside of the spindle 8, an end cover 102 is provided at the lower end of the outer cylinder 101, and an end cap 102 is provided at the end of the end cap 102. A plurality of through holes 103 are provided on the cover 102, and two collecting cylinders 105 are fixed on both sides of the sleeve 104. A shovel plate 106 is fixed on one side of the two collecting cylinders 105, and a cutting knife 107 is provided on the side of the two shovel plates 106. The inner sides of the two collecting cylinders 105 are rotatably connected to a rotating shaft 109, and a spiral blade 110 is fixed on the outer side of the two rotating shafts 109. One end of the two rotating shafts 109 is fixed with a rubber wheel 112 located on the outer side of the collecting cylinder 105, and the two cutting knives 107 are respectively fixed to the side edges of the two shovel plates 106 by screws; and a clutch mechanism for connecting and disconnecting the sleeve 104 and the main shaft 8 is also included.

[0032] Furthermore, the clutch mechanism includes a first friction plate 201 fixed to the upper end of the sleeve 104, a spline sleeve 202 fixed to the outside of the main shaft 8, and an electromagnet 207 installed on the upper side of the two collecting tubes 105. The outer side of the spline sleeve 202 is slidably sleeved with a spline sleeve 203, and the outer side of the spline sleeve 203 is movably provided with a push-pull plate 204. The lower end of the spline sleeve 203 is fixed with a second friction plate 205, and the push-pull plate 204 is rotatably connected to the outer side of the spline sleeve 203 through a bearing.

[0033] The lower side of the end cover 102 is fixed with an extension cylinder 209, the main shaft 8 penetrates and is rotatably connected to the inner side of the extension cylinder 209, the outer side of the extension cylinder 209 is installed with a plurality of photoelectric sensors 208, each photoelectric sensor 208 is electrically connected with two electromagnets 207 in the clutch mechanism through a control circuit, and the detection direction of the plurality of photoelectric sensors 208 is horizontally detected around the position of the main shaft 8. When the long iron filings gradually extend to the lower side of the end cover 102, any one of the photoelectric sensors 208 will detect the presence of the long iron filings, so as to trigger the circuit in the photoelectric sensor 208. The photoelectric sensor 208 controls the two electromagnets 207 in the clutch mechanism to be electrified to generate electromagnetic attraction force on the push-pull plate 204 through the control circuit. After the push-pull plate 204 is subjected to the attraction force, the push-pull plate 204 drives the spline sleeve 203 to move downward synchronously, the spline sleeve 203 drives the second friction plate 205 at the lower end to rotate while moving downward, until the second friction plate 205 is tightly attached to the first friction plate 201. After the first friction plate 201 and the second friction plate 205 are tightly attached, the first friction plate 201 can be driven to rotate synchronously through the friction force between the two plates. The first friction plate 201 drives the sleeve 104 of the iron filings cutting and collecting mechanism to rotate.

[0034] The lower side of the push-pull plate 204 is connected with two collection cylinders 105 through reset springs 206. When the push-pull plate 204 moves downward, the two reset springs 206 are compressed. When the long iron filings are cut off and the long iron filings no longer extend into the inner side of the outer cylinder 101 through the through hole 103, the plurality of photoelectric sensors 208 do not detect the long iron filings, and the circuit of the electromagnet 207 is not controlled to be conductive. The electromagnet 207 does not generate electromagnetic attraction force on the push-pull plate 204, so that the push-pull plate 204 is pushed upward to reset under the action of the two reset springs 206, so that the second friction plate 205 is separated from the first friction plate 201.

[0035] Further, the upper side of the end cover 102 is fixed with a friction ring 113 corresponding to the position of the two rubber wheels 112, and the friction ring 113 is a component made of rubber material.

[0036] The rubber material friction ring 113 and the rubber wheel 112 are rolled together, which can increase the friction between them and ensure the stable rotation of the friction ring 113, so as to drive the rotation of the rotating shaft 109 and the spiral blade 110 stably, so as to stably collect the iron filings to one end of the collection cylinder 105.

[0037] Further, the two shovel plates 106 are components made of ferromagnetic material.

[0038] When the long iron chips extending to the inner side of the outer cylinder 101 are cut off by the cutting knife 107, the cut iron chips will be adsorbed on the upper surface of the shovel plate 106. The shovel plate 106 adsorbs the cut iron chips to prevent the cut iron chips from falling out, thereby preventing the iron chips from accumulating on the workpiece and the workbench surface, and thus avoiding the iron chips from splashing around.

[0039] Furthermore, a collecting port 108 is provided on one side of each of the two collecting cylinders 105, and two guide plates 114 are fixed on the upper side of each of the two shovel plates 106, with one end of the four guide plates 114 aligned with the two ends of the two collecting ports 108 respectively;

[0040] When the iron filings adsorbed on the upper surface of the shovel plate 106 move toward the inside of the collection port 108, the two guide plates 114 can guide the moving iron filings so that the iron filings gather toward the position of the collection port 108, so that the iron filings adsorbed on the upper surface of the shovel plate 106 can be accurately moved to the inside of the collection port 108, and then enter the inside of the collection tube 105 to be collected.

[0041] Furthermore, an iron chip guide mechanism is provided at the edge position of the lower side of the end cover 102; the iron chip guide mechanism includes an outer ring 301 fixed to the lower side of the end cover 102, an upper conical ring 303 is fixed to the inner side of the outer ring 301 at the upper edge position, and a lower conical ring 302 is fixed to the inner side of the outer ring 301 at the lower edge position, the upper edge of the lower conical ring 302 is located inside the lower edge of the upper conical ring 303, and an annular partition 304 is fixed between the upper edge of the lower conical ring 302 and the lower edge of the upper conical ring 303, a plurality of air injection holes 305 are evenly opened on the surface of the annular partition 304, and also includes a blowing mechanism for blowing air into the inner side of the outer ring 301, the blowing mechanism is an air pump 306 installed on the outside of the door frame 3, and the air outlet of the air pump 306 is connected to the inner side of the outer ring 301 through the air pipe 307;

[0042] Through the blowing mechanism, an upward-flowing airflow can be sprayed obliquely toward the bottom of the end cover 102, and the sprayed airflow flows along the inner wall of the upper conical ring 303. The upper end of the long iron filings can be blown by the airflow on the inner wall of the upper conical ring 303, so that the upper end of the long iron filings can be concentrated toward the position of the through hole 103, so that the upper end of the long iron filings can pass through the through hole 103 more accurately and extend to the inside of the outer cylinder 101, so that the long iron filings can be fully cut off to prevent the long iron filings from winding outward.

[0043] Furthermore, the upper edge diameters of the lower conical ring 302 and the upper conical ring 303 are both smaller than the lower edge diameters;

[0044] The upper edge diameters of the lower conical ring 302 and the upper conical ring 303 are both smaller than the lower edge diameters. Therefore, the lower conical ring 302 and the upper conical ring 303 are both conical structures with small upper ends. The upper ends of the long iron chips can be guided by the conical inner walls of the lower conical ring 302 and the upper conical ring 303. The upper ends of the long iron chips slide upward along the inner walls of the lower conical ring 302 and the upper conical ring 303, thereby facilitating the upper ends of the long iron chips to enter the inner side of the through hole 103 more accurately, further preventing the long iron chips from being thrown out to the outside, and ensuring the safety of the processing process.

[0045] Working principle: When the milling machine is running, the longitudinal slide 2, the transverse slide 4, and the vertical slide 5 drive the spindle motor 7 to move to any position in space. The spindle motor 7 drives the spindle 8 and the milling cutter 9 to move freely in space. The operation of the spindle motor 7 drives the spindle 8 and the milling cutter 9 to rotate. The milling cutter 9 rotates to mill the surface of the workpiece. When milling materials with high plasticity, such as low-carbon steel, aluminum, copper and other materials, long spiral continuous iron chips are easily generated;

[0046] Since an extension cylinder 209 is fixed on the lower side of the end cover 102, the main shaft 8 is connected to the inner side of the extension cylinder 209 through rotation, and a plurality of photoelectric sensors 208 are installed on the outer side of the extension cylinder 209. Each photoelectric sensor 208 is electrically connected to the two electromagnets 207 in the clutch mechanism through a control circuit, and the detection direction of the plurality of photoelectric sensors 208 is horizontally detected from the position of the main shaft 8 to the surrounding areas. When the long iron filings gradually extend to the bottom of the end cover 102, any number of photoelectric sensors 208 will detect the presence of the long iron filings, thereby triggering the circuit in the photoelectric sensor 208. The photoelectric sensor 208 controls the two electromagnets 207 in the clutch mechanism to energize and generate electromagnetic attraction through the control circuit. Since the push-pull plate 204 is made of carbon steel, the push-pull plate 204 will be in the two electromagnets 207. The push-pull plate 204 moves downward under the action of the electromagnetic attraction, and the push-pull plate 204 drives the spline sleeve 203 to move downward synchronously. Since the spline sleeve 203 is slidably connected to the outer side of the spline sleeve shaft 202, the main shaft 8 rotates, which drives the spline sleeve 203 to rotate through the spline sleeve shaft 202. The spline sleeve 203 is rotatably connected to the inner side of the push-pull plate 204 through the bearing. Therefore, the push-pull plate 204 can drive the rotating spline sleeve 203 to move downward while moving downward, and the spline sleeve 203 drives the second friction plate 205 at its lower end to rotate and move downward until the second friction plate 205 is tightly attached to the first friction plate 201. After the first friction plate 201 and the second friction plate 205 are tightly attached, the friction between the two can drive the first friction plate 201 to rotate synchronously, and the first friction plate 201 drives the sleeve 104 of the chip cutting and collecting mechanism to rotate;

[0047] When the sleeve 104 rotates, it can drive the two collecting cylinders 105 to rotate. The two collecting cylinders 105 respectively drive the two cutting knives 107 to rotate synchronously with the main shaft 8 through the shovel plate 106, so that the two cutting knives 107 can slide circularly along the upper side of the end cover 102. Since the long iron chips will pass through the end cover 102 through the multiple through holes 103 and extend to the inner side of the outer cylinder 101, and one side of the circularly sliding cutting knives 107 is attached to the upper side of the end cover 102, when the cutting knives 107 rotate with the main shaft 8, the long iron chips extending to the inner side of the outer cylinder 101 can be cut off, thereby preventing the long iron chips from being entangled around the tool or the outside of the workpiece, thereby preventing the long iron chips from scratching the surface of the workpiece, ensuring the production quality of the workpiece, and at the same time preventing the long iron chips from splashing around and causing harm to nearby personnel;

[0048] Since the scraping plates 106 are made of ferromagnetic materials, when the long iron chips extending to the inner side of the outer cylinder 101 are cut off by the cutting blade 107, the cut iron chips will be absorbed by the upper surface of the scraping plates 106. The scraping plates 106 absorb the cut iron chips and prevent them from falling outward, thereby preventing the iron chips from accumulating on the workpiece and the workbench surface, and thus preventing the iron chips from splashing around.

[0049] As the amount of iron filings adsorbed on the upper surface of the shovel plate 106 increases, the iron filings on the side of the upper surface of the shovel plate 106 near the cutting blade 107 gradually push the iron filings on the side of the collecting port 108 into the inner side of the collecting port 108, and can enter the inner side of the collecting cylinder 105 through the collecting port 108. Moreover, when the collecting cylinder 105 rotates with the main shaft 8, it also drives the rotating shaft 109 and the rubber wheel 112 to rotate synchronously. Since the friction ring 113 is fixed at the position of the two rubber wheels 112 on the upper side of the end cover 102, and the friction ring 113 is made of rubber, when the rubber wheel 112 follows the collecting cylinder 105 to rotate around the main shaft 8, the friction between the rubber wheel 112 and the friction ring 113 can The rubber wheel 112 is driven to rotate, and the rubber wheel 112 drives the rotating shaft 109 to rotate inside the collecting barrel 105, and the rotating shaft 109 drives the outer spiral blade 110 to rotate. The rotation of the spiral blade 110 can push the iron filings pushed into the inner side of the collecting barrel 105 to the end where the sealing cover 111 is located, so that the iron filings adsorbed on the upper surface of the shovel plate 106 can be gradually transferred to the inner end of the collecting barrel 105, thereby centrally collecting the iron filings, further preventing the iron filings from being scattered outward, and further preventing the iron filings from accumulating on the workpiece and the workbench surface. Since the sealing cover 111 is fixed to the end of the collecting barrel 105 by multiple screws, the sealing cover 111 can be regularly disassembled to clean the iron filings collected at the inner end of the collecting barrel 105;

[0050] Since two guide plates 114 are fixed on the upper side of the shovel plate 106, one end of the two guide plates 114 is aligned with the two ends of the collection port 108 respectively. When the iron chips adsorbed on the upper surface of the shovel plate 106 move toward the inside of the collection port 108, the two guide plates 114 can guide the moving iron chips and make them gather toward the position of the collection port 108, so that the iron chips adsorbed on the upper surface of the shovel plate 106 can be accurately moved to the inside of the collection port 108, and then enter the inner side of the collection cylinder 105 to be collected;

[0051] A blowing mechanism is provided on the lower side of the end cover 102. The air pump 306 in the blowing mechanism blows the outside air into the inner side of the outer ring 301 through the air pipe 307. Since the lower conical ring 302 and the upper conical ring 303 are fixed on the inner side of the outer ring 301, the upper edge of the lower conical ring 302 is located on the inner side of the lower edge of the upper conical ring 303, and an annular partition 304 is fixed between the upper edge of the lower conical ring 302 and the lower edge of the upper conical ring 303. A plurality of air injection holes 305 are evenly opened on the surface of the annular partition 304. Therefore, the air inside the outer ring 301 is It can be sprayed upward from multiple jet holes 305, and the upper edge diameters of the lower conical ring 302 and the upper conical ring 303 are smaller than the lower edge diameters. Therefore, the ejected airflow can flow along the inner wall of the upper conical ring 303, and the upper ends of the long iron filings can be blown by the airflow on the inner wall of the upper conical ring 303, so that the upper ends of the long iron filings can be concentrated to the position of the through hole 103, making it convenient for the upper ends of the long iron filings to pass through the through hole 103 more accurately and extend to the inside of the outer cylinder 101, so that the long iron filings can be fully cut off to prevent the long iron filings from winding outward.

[0052] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A CNC gantry milling machine for a machining center, comprising a machine platform, a longitudinal slide and a gantry are provided on the upper side of the machine platform, a transverse slide is provided on one side of the gantry, a vertical slide is provided on one side of the transverse slide, a spindle motor is installed on one side of the vertical slide through a connecting plate, a milling cutter is installed on the driving end of the spindle motor through the spindle, and the characteristics are: Also includes: An iron chip cutting and collecting mechanism is arranged on the outside of the main shaft; The iron chip cutting and collecting mechanism includes an outer cylinder fixed to the lower end of the connecting plate, a sleeve movably sleeved on the outside of the main shaft, an end cover provided at the lower end of the outer cylinder, a plurality of through holes opened on the end cover, two collecting cylinders fixed on both sides of the sleeve, a shovel plate fixed on one side of each collecting cylinder, a cutting knife provided on the side of each shovel plate, a rotating shaft rotatably connected to the inner side of each collecting cylinder, a spiral blade fixed on the outer side of each rotating shaft, and a rubber wheel located on the outer side of the collecting cylinder fixed at one end of each rotating shaft; It also includes a clutch mechanism for combining and separating the sleeve and the main shaft.

2. The CNC gantry milling machine for machining center according to claim 1, characterized in that: The clutch mechanism includes a first friction plate fixed to the upper end of the sleeve, a spline sleeve fixed to the outside of the main shaft, and an electromagnet installed on the upper side of the two collecting cylinders. The outer sliding sleeve of the spline sleeve is provided with a spline sleeve, and a push-pull plate is movably provided on the outer side of the spline sleeve. The lower end of the spline sleeve is fixed with a second friction plate.

3. The CNC gantry milling machine for machining center according to claim 2, characterized in that: The push-pull plate is rotatably connected to the outer side of the spline sleeve through a bearing.

4. The CNC gantry milling machine for a machining center according to claim 1, characterized in that: A friction ring is fixed on the upper side of the end cover at positions corresponding to the two rubber wheels, and the friction ring is made of rubber material.

5. The CNC gantry milling machine for a machining center according to claim 1, characterized in that: Both shovel plates are made of ferromagnetic materials.

6. The CNC gantry milling machine for a machining center according to claim 1, characterized in that: A collecting port is provided on one side of the two collecting cylinders. Two guide plates are fixed on the upper sides of the two shovel plates. One end of the four guide plates is aligned with the two ends of the two collecting ports respectively.

7. The CNC gantry milling machine for a machining center according to claim 1, characterized in that: The two cutting knives are respectively fixed to the sides of the two shovel plates by screws.

8. The CNC gantry milling machine for a machining center according to claim 1, characterized in that: An iron chip guide mechanism is provided at the edge of the lower side of the end cover; The chip guide mechanism includes an outer ring fixed to the lower side of the end cover, an upper conical ring is fixed on the inner side of the outer ring at the upper edge position, and a lower conical ring is fixed on the inner side of the outer ring at the lower edge position, the upper edge of the lower conical ring is located on the inner side of the lower edge of the upper conical ring, and an annular partition is fixed between the upper edge of the lower conical ring and the lower edge of the upper conical ring, a plurality of air injection holes are evenly opened on the surface of the annular partition, and also includes a blowing mechanism for blowing air into the inner side of the outer ring.

9. The CNC gantry milling machine for a machining center according to claim 8, characterized in that: The air blowing mechanism is an air pump installed on the outside of the door frame, and the air outlet of the air pump is connected to the inner side of the outer ring through an air pipe.

10. The CNC gantry milling machine for a machining center according to claim 8, characterized in that: The upper edge diameters of the lower conical ring and the upper conical ring are both smaller than the lower edge diameters.

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