A tool magazine structure for parallel multi-channel CNC machine tools

Abstract

The present invention relates to the field of machine tool tool magazines, and specifically to a tool magazine structure applied to a parallel multi-channel CNC machine tool, comprising a tool return mechanism, a sliding mechanism, a reciprocating control mechanism and a multifunctional lubrication component. The parallel multi-channel machine tool is provided with a tool magazine on one side, and a processing area is provided on the side of the parallel multi-channel machine tool away from the tool magazine. By respectively arranging support wing plates with two tool clamping seats on both sides of a return movable frame, when replacing the tools of a processing spindle, one return movable frame can be responsible for the tool return operation of two processing spindles. In addition, with the cooperation of the reciprocating control component and the lubrication component, the return movable frame can be stably supported and controlled when it reciprocates, so that the operation is more stable and reliable, and the safety of tool return is improved. At the same time, the control screw rod and the sliding ball can be adaptively and long-term lubrication control can be performed to avoid frequent disassembly and maintenance during long-term use, saving worry and labor.

Description

Technical Field

[0001] The invention relates to the field of machine tool tool magazines, and in particular to a tool magazine structure applied to parallel multi-channel numerically controlled machine tools. Background Art

[0002] A parallel multi-channel CNC machine tool is a machine tool equipped with multiple power heads, tools or processing mechanisms. It can process one or more workpieces at the same time. It has multiple coordinate axes, each of which can move independently or in conjunction. It is composed of servo motors, lead screws, guide rails, etc. to ensure the relative motion accuracy and speed of the tool and the workpiece. A parallel multi-channel CNC machine tool has multiple processing spindles. When replacing tools, a matching tool library is required for coordinated tool change processing;

[0003] The invention of the existing announcement number CN108655797B provides a tool magazine, a tool changing mechanism with a tool magazine and a multi-spindle machining center including the tool changing mechanism. The tool magazine mounting frame is constructed to be fixed to the machine tool spindle crossbeam, the tool magazine bracket is installed on the tool magazine mounting frame, the tool storage bin is fixed to the tool magazine bracket, each of the tool storage bins includes a plurality of tool storage cavities, the tool magazine has a large tool storage capacity, good protection for the tools, and a long maintenance period, the tool changing efficiency using the tool magazine is high, and the machining efficiency of the machining center is high, because the tool magazine and the machining area are two separate spaces, when changing tools for multiple spindles, the tool changing mechanism needs to use a screw rod and a sliding mechanism to send the tool from the tool magazine to the bottom of each spindle in the machining area, the screw rod and the sliding mechanism are prone to lubrication failure after a long time, and need regular maintenance, and because the internal components of the machine tool are complex, a large number of disassembly operations are often accompanied during later maintenance, which is inconvenient to use. Summary of the invention

[0004] The object of the present invention is to provide a tool magazine structure applied to a parallel multi-channel CNC machine tool to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a tool magazine structure applied to a parallel multi-channel CNC machine tool, comprising:

[0006] A parallel multi-channel machine tool, wherein a tool magazine is provided on one side of the parallel multi-channel machine tool, a processing area is provided on the side of the parallel multi-channel machine tool away from the tool magazine, four processing spindles are vertically provided in the processing area, four tool holders are provided in the tool magazine corresponding to the four processing spindles, two tool return mechanisms are horizontally symmetrically provided between the tool magazine and the processing area, the two tool return mechanisms are respectively located between two adjacent processing spindles, the tool return mechanisms each include a return support box and a return movable frame, and a sliding assembly plate is provided at the upper end of the return movable frame;

[0007] A reciprocating control mechanism, wherein the upper end of the sliding assembly plate is connected to the reciprocating control mechanism, the reciprocating control mechanism comprises a multifunctional combination sleeve and a control screw rod, the sliding assembly plate is movably arranged in the return support box through the sliding mechanism, and the sliding mechanism comprises a plurality of sliding balls;

[0008] A multifunctional lubrication component is arranged in a multifunctional combination sleeve. The multifunctional lubrication component comprises an annular oil chamber and an annular air groove, and the annular oil chamber is matched with a control screw rod and a plurality of sliding balls.

[0009] Preferably, a movable cavity is opened at the lower end of the return support box, and walking slide grooves are symmetrically provided at the lower ends of both sides of the movable cavity. The two sides of the sliding assembly plate are horizontally movably inserted into the two walking slide grooves, and support wing plates are horizontally provided on both sides of the lower end of the return movable frame away from the sliding assembly plate, and two tool clamps are fixedly provided on the side of the support wing plate close to the processing area of ​​the parallel multi-channel machine tool.

[0010] Preferably, the sliding assembly plate is inserted into the walking slide groove with a plurality of ball grooves on both upper and lower sides, and a plurality of sliding balls are movably inserted into the plurality of ball grooves, and one side of the plurality of sliding balls is in contact with the upper and lower sides of the walking slide groove respectively.

[0011] Preferably, a pulling connection seat is vertically provided on one side of the upper end of the sliding assembly plate, and a multifunctional combination sleeve is provided on the upper end of the pulling connection seat for horizontal fixing and insertion by bolts, and a control screw rod is provided for horizontal rotation in the movable cavity of the return support box, and the multifunctional combination sleeve is connected to the control screw rod through a screw rod thread.

[0012] Preferably, a limit reference block is horizontally provided in the movable cavity of the return support box at the upper end away from the machining spindle, a switching control cavity is opened on the side of the multifunctional combination sleeve close to the limit reference block, a hollow space partition is provided on one side of the switching control cavity, a prismatic synchronization rod is horizontally movably inserted in the center of the hollow space partition, the prismatic synchronization rod passes through the hollow space partition, and abutment push rods and switching pistons are respectively provided on both sides, one side of the abutment push rod movably passes through one side of the multifunctional combination sleeve, a skirt plate is provided on one side of the abutment push rod located in the switching control cavity, a reset spring is sleeved on the prismatic synchronization rod between the skirt plate and the hollow space partition, and when the tool clamp seat abuts and contacts with the tool placement seat, one side of the abutment push rod abuts with the limit reference block.

[0013] Preferably, an annular oil chamber is provided in the multifunctional combination sleeve on the side away from the abutting push rod, and a supplementary oil groove is provided at the upper end of the annular oil chamber through the multifunctional combination sleeve, and a plug cover is provided at the upper end of the supplementary oil groove through a threaded sealing plug-in, and a top oil and gas groove is provided in the switching control chamber at the upper end on one side of the return spring and connected to the supplementary oil groove, and an air supply groove is provided in the switching control chamber at the lower end on one side of the switching piston and through the multifunctional combination sleeve close to the limit reference block, and when the abutting push rod is squeezed and contacted with the limit reference block, the switching piston and the air supply groove are misaligned.

[0014] Preferably, a diverter oil groove is opened on one side of the lower end of the annular oil chamber in the multifunctional combination sleeve, and an inflow groove is opened on the diverter oil groove connected to the lower end of the annular oil chamber, a non-contact barrel groove is opened on the side of the multifunctional combination sleeve connected to the control screw rod, the diameter of the non-contact barrel groove is larger than the diameter of the control screw rod, and a lifting oil groove is opened on the upper end connected to the non-contact barrel groove, and adapter oil pipes are respectively connected and inserted on both sides of the diverter oil groove, and a one-way valve is provided on one side of the lifting oil groove connected to the diverter oil groove and one side of the adapter oil pipe.

[0015] Preferably, the plurality of ball grooves of the sliding assembly plate are respectively arranged correspondingly up and down, and a filling groove is vertically opened between two of the plurality of ball grooves arranged correspondingly up and down, and oil-absorbing cotton is vertically inserted in the filling grooves, and the two sides of the oil-absorbing cotton are respectively placed in the ball grooves and in contact with the two sliding balls.

[0016] Preferably, oil connecting grooves are horizontally opened on both sides of the sliding assembly plate, and an oil delivery groove is horizontally opened on one side of the oil connecting groove close to the oil absorbing cottons, and one side of the two transfer oil pipes is respectively connected and plugged with one side of the two connecting oil grooves.

[0017] Preferably, an annular air groove is provided on one side of the multifunctional combination sleeve near the non-contact cylinder groove, the upper end of the annular air groove is connected to the switching control chamber, and a connecting air groove is provided on the side near the switching piston, and a transfer air groove is provided in the switching piston to connect the lower end and one side. When the switching piston is located at the air feeding groove position, one side of the transfer air groove is connected with the air feeding groove, and the connecting air groove is connected with the transfer air groove through the switching control chamber, and a plurality of cleaning holes are provided in the upper part of the annular air groove to connect with the non-contact cylinder groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By respectively arranging supporting wing plates with two tool clamps on both sides of the returning movable frame, when replacing the tool of the machining spindle, one returning movable frame can be responsible for the tool return operation of two machining spindles. In addition, with the cooperation of the reciprocating control component and the lubrication component, the returning movable frame can be stably supported and controlled when performing reciprocating motion, so that the operation is more stable and reliable, and the safety of tool return is improved. At the same time, the control screw rod and the sliding ball can be adaptively controlled for long-term lubrication, so that frequent disassembly and maintenance during long-term use can be avoided, which saves worry and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure inside the tool library of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0022] Figure 3 It is a schematic diagram of the processing state structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0024] Figure 5 It is a schematic diagram of the knife returning mechanism of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the C part;

[0026] Figure 7 It is a schematic diagram of the partial side cutting structure of the knife returning mechanism of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the D part;

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of part E;

[0029] Fig.10 For the present invention Fig. 9 Schematic diagram of the F part;

[0030] Fig.11 For the present invention Fig. 9 Schematic diagram of the G part;

[0031] Fig.12 The present invention is a schematic diagram of the structure of the movable frame;

[0032] Fig.13 This is a schematic diagram of the connection structure of the multifunctional combination sleeve of the present invention;

[0033] Fig.14 For the present invention Fig.13 Schematic diagram of the H part;

[0034] Fig.15 For the present invention Fig.14 Schematic diagram of the J part;

[0035] Fig.16 It is a schematic diagram of the disassembled structure of the multifunctional combination sleeve and the sliding assembly plate of the present invention.

[0036] In the figure: parallel multi-channel machine tool 1, tool magazine 2, tool holder 3, tool placement arm 4, return support box 5, return movable frame 6, processing spindle 7, support wing plate 8, tool clamp seat 9, walking slide 10, sliding assembly plate 11, pulling connection seat 12, multi-functional combination sleeve 13, control screw 14, non-contact cylinder groove 15, switching control chamber 16, prismatic synchronization rod 17, abutment push rod 18, switching piston 19, return spring 20, feeding air groove 21, limit reference block 22, top oil and air groove 23, annular oil chamber 24, replenishing oil groove 25, diverter oil groove 26, lifting oil groove 27, transfer oil pipe 28, connecting oil groove 29, sliding ball 30, oil absorbing cotton 31, oil feeding groove 32, annular air groove 33, connecting air groove 34, transfer air groove 35, blowing hole 36. DETAILED DESCRIPTION

[0037] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0038] See also Figure 1-Figure 16 , the present invention provides the following technical solutions:

[0039] Embodiment 1: A tool magazine structure applied to a parallel multi-channel CNC machine tool, comprising a parallel multi-channel machine tool 1, a tool magazine 2 is provided on one side of the parallel multi-channel machine tool 1, a processing area is provided on the side of the parallel multi-channel machine tool 1 away from the tool magazine 2, four processing spindles 7 are vertically provided in the processing area, four tool holders 3 are provided in the tool magazine 2 corresponding to the four processing spindles 7, two tool return mechanisms are horizontally symmetrically provided between the tool magazine 2 and the processing area, the two tool return mechanisms are respectively located between two adjacent processing spindles 7, the tool return mechanisms each comprise a return support box 5 and a return movable frame 6, a sliding assembly plate 11 is provided at the upper end of the return movable frame 6, a movable cavity is opened at the lower end of the return support box 5, walking slides 10 are symmetrically provided at the lower ends of both sides of the movable cavity, and two sides of the sliding assembly plate 11 are respectively horizontally movably plugged in The tool holder 1 is provided with two tool clamps 9 on one side of the support wing 8 and the tool clamps 9, and the tool magazine 2 is provided with a tool placement arm 4 for grabbing the tools on the support wing 8 and the tool clamps 9 and placing them on the tool holder 3. The movable control of the tool placement arm 4 can be independent control in multiple directions or synchronous in the Y-axis direction and independent control in other directions. When the tool of the machining spindle 7 needs to be replaced, the return movable frame 6 drives the support wing 8 and the two tool clamps 9 to move to the bottom of the machining spindle 7 in the machining area. The machining spindle 7 places the used tool on one of the tool clamps 9, and then connects the tool carried by the other tool clamp 9.

[0040] A reciprocating control mechanism is provided to control the returning movable frame 6 to enter the processing area and retract into the tool magazine 2. The upper end of the sliding assembly plate 11 is connected to the reciprocating control mechanism. The reciprocating control mechanism includes a multifunctional combination sleeve 13 and a control screw 14. The sliding assembly plate 11 is movably arranged in the returning support box 5 through the sliding mechanism. The sliding mechanism includes a plurality of sliding balls 30. The sliding assembly plate 11 is inserted into the walking slide 10 and a plurality of ball grooves are provided on both the upper and lower sides. The plurality of sliding balls 30 are movably inserted into the plurality of ball grooves, and one side of the plurality of sliding balls 30 is respectively in contact with the upper and lower sides of the walking slide 10. The horizontal sliding of the sliding assembly plate 11 in the returning support box 5 serves as a support and stability for the cantilevered tool of the returning movable frame 6. The setting of the sliding balls 30 can reduce excessive wear caused by lateral pressure.

[0041] A pulling connection seat 12 is vertically provided on one side of the upper end of the sliding assembly plate 11, and a multifunctional combination sleeve 13 is provided on the upper end of the pulling connection seat 12 for horizontal fixing and insertion by bolts. A control screw rod 14 is provided for horizontal rotation in the movable cavity of the return support box 5, and the multifunctional combination sleeve 13 is connected to the control screw rod 14 through a screw thread sleeve. A limit reference block 22 is horizontally provided at the upper end of the movable cavity of the return support box 5 away from the processing spindle 7, and a switching control cavity 16 is provided on one side of the multifunctional combination sleeve 13 close to the limit reference block 22. A hollow space partition is provided on one side of the switching control cavity 16, and a prismatic synchronization rod 17 is horizontally and movably inserted in the center of the hollow space partition. The prismatic synchronization rod 17 passes through the hollow space partition and abutment push rods are respectively provided on both sides. 18 and a switching piston 19, one side of the abutting push rod 18 movably passes through one side of the multifunctional combination sleeve 13, and a skirt is provided on one side of the abutting push rod 18 located in the switching control chamber 16, and a prismatic synchronization rod 17 is located between the skirt and the hollow space partition and is sleeved with a return spring 20, and when the tool holder 9 abuts against the placement tool holder 3, one side of the abutting push rod 18 abuts against the limit reference block 22, and the multifunctional combination sleeve 13 is a detachable connection, which can be selected according to needs, and the return movable frame 6 is reciprocated by the control screw 14. During control, when the support wing plate 8 abuts against the placement tool holder 3, the abutting push rod 18 is squeezed by the limit reference block 22, and the switching piston 19 moves synchronously and abuts against the inner wall of the switching control chamber 16.

[0042] A multifunctional lubrication component is provided to lubricate the control screw 14 and the sliding ball 30. The multifunctional lubrication component is provided in the multifunctional combination sleeve 13. The multifunctional lubrication component includes an annular oil chamber 24 and an annular air groove 33. The annular oil chamber 24 is provided in cooperation with the control screw 14 and a plurality of sliding balls 30. An annular oil chamber 24 is provided on the side of the multifunctional combination sleeve 13 away from the abutting push rod 18. The upper end of the annular oil chamber 24 penetrates the multifunctional combination sleeve 13 to provide a supplementary oil groove 25. The upper end of the supplementary oil groove 25 is provided with a plugging cover through a threaded sealing plug. A top oil gas is provided in the switching control chamber 16 at the upper end on one side of the reset spring 20 and connected to the supplementary oil groove 25. Groove 23, an air supply groove 21 is provided on one side of the switching piston 19 at the lower end thereof, penetrating the multifunctional combination sleeve 13 and close to the limit reference block 22 in the switching control chamber 16, and when the abutting push rod 18 is squeezed and contacted with the limit reference block 22, the switching piston 19 is dislocated from the air supply groove 21. When high-pressure gas is connected to the air supply groove 21, the abutting push rod 18 pushes the switching piston 19 to be dislocated from the air supply groove 21. At this time, the high-pressure gas enters the switching control chamber 16, and then enters the supplementary oil groove 25 through the top oil and gas groove 23, and then the annular oil chamber 24 is filled with high-pressure gas. The supplementary oil groove 25 can be replenished when there is not much lubricating oil in the annular oil chamber 24.

[0043] A diverter oil groove 26 is provided on one side of the lower end of the annular oil chamber 24 in the multifunctional combination sleeve 13, and the diverter oil groove 26 is connected to the lower end of the annular oil chamber 24 to form an inflow groove. A non-contact barrel groove 15 is provided on one side of the multifunctional combination sleeve 13 sleeved with the control screw rod 14, and the diameter of the non-contact barrel groove 15 is larger than the diameter of the control screw rod 14. A lifting oil groove 27 is provided on the upper end connected to the non-contact barrel groove 15. The two sides of the diverter oil groove 26 are connected and plugged with a transfer oil pipe 28, and a single oil pipe is provided on one side of the lifting oil groove 27 connected to the diverter oil groove 26 and one side of the transfer oil pipe 28. When there is lubricating oil in the annular oil chamber 24, it naturally flows into the diverter oil groove 26 through the inflow groove under the action of its own gravity. At this time, when high-pressure gas is sent from the top of the annular oil chamber 24, the high-pressure environment will push the lubricating oil in the diverter oil groove 26 to break through the obstruction of the one-way valve and enter the lifting oil groove 27 and the two transfer oil pipes 28 at the same time. The lubricating oil entering the lifting oil groove 27 drips onto the control screw rod 14 from the top of the non-contact barrel groove 15. When the movable frame 6 and the multi-functional combination sleeve 13 are subsequently returned and moved, the multi-functional combination sleeve 13 is stained on more areas of the control screw rod 14;

[0044] The plurality of ball grooves of the sliding assembly plate 11 are respectively arranged in correspondence with each other up and down, and a filling groove is vertically opened between two of the plurality of ball grooves arranged in correspondence with each other up and down, and oil-absorbing cotton 31 is vertically inserted in the filling groove, and the two sides of the oil-absorbing cotton 31 are respectively placed in the ball groove and contact with the two sliding balls 30, and the two sides of the sliding assembly plate 11 are horizontally opened with connecting oil grooves 29, and the side of the connecting oil groove 29 close to the plurality of oil-absorbing cotton 31 is horizontally connected with an oil delivery groove 32, and one side of the two transfer oil pipes 28 is respectively It is connected and plugged with one side of the two connected oil grooves 29, and the lubricating oil entering the adapter oil pipe 28 is respectively connected to the oil-absorbing cotton 31 through the connected oil groove 29 and the oil delivery groove 32. After the oil-absorbing cotton 31 is fully absorbed with the lubricating oil, it coats the sliding ball 30, so that the sliding ball 30 can effectively support and lubricate the sliding of the sliding assembly plate 11. In addition, the number of sliding balls 30 can be adapted and selected according to the weight of the returning movable frame 6 and the tool to ensure the stability of the movement of the sliding assembly plate 11 and the returning movable frame 6.

[0045] Embodiment 2: On the basis of embodiment 1, the contaminated oil on the surface of the control screw rod 14 can be cleaned, an annular air groove 33 is provided on the side close to the non-contact barrel groove 15 in the multifunctional combination sleeve 13, the upper end of the annular air groove 33 is connected to the switching control chamber 16, and a connecting air groove 34 is provided on the side close to the switching piston 19, and a transfer air groove 35 is provided in the switching piston 19 to connect the lower end and one side. When the switching piston 19 is located at the position of the feeding air groove 21, one side of the transfer air groove 35 is connected to the feeding air groove 21, and the connecting air groove 34 is connected to the transfer air groove 35 through the switching control chamber 16. A plurality of blowing holes 36 are provided on the upper side of the annular air groove 33 to connect to the non-contact barrel groove 15. During lubrication, the abutting push rod 18 needs to abut against the limit reference block 22, that is, the returning movable frame 6 needs to be in the tool magazine 2. When the returning movable frame 6 extends into the active part of the working area During the movement, the transfer gas groove 35 of the switching piston 19 is always connected with the feeding gas groove 21. At this time, high-pressure gas is fed into the feeding gas groove 21, and the control screw 14 through which the multifunctional combination sleeve 13 passes can be sprayed from above at high pressure by connecting the gas groove 34, the annular gas groove 33 and the cleaning hole 36. Since the control screw 14 needs to rotate, the control screw 14 can be fully sprayed with oil, thereby improving the lubrication and stability of the control screw 14, avoiding the accumulation of oil on the surface of the control screw 14, and affecting the activity coordination between the multifunctional combination sleeve 13 and the control screw 14. The non-contact barrel groove 15 can be a conical structure. With the high-pressure gas, the sprayed oil can be discharged by itself. An accordion shield can be set at the lower end of the return support box 5 and the sliding assembly plate 11 to prevent external dust from affecting the control screw 14, and at the same time avoid the oil blown from the control screw 14 from polluting the tool library.

[0046] 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 tool magazine structure applied to a parallel multi-channel CNC machine tool, characterized in that: include: A parallel multi-channel machine tool (1), wherein a tool magazine (2) is provided on one side of the parallel multi-channel machine tool (1), a processing area is provided on a side of the parallel multi-channel machine tool (1) away from the tool magazine (2), four processing spindles (7) are vertically provided in the processing area, four tool holders (3) are provided in the tool magazine (2) corresponding to the four processing spindles (7), two tool return mechanisms are horizontally symmetrically provided between the tool magazine (2) and the processing area, the two tool return mechanisms are respectively located between two adjacent processing spindles (7), the tool return mechanisms each include a return support box (5) and a return movable frame (6), and a sliding assembly plate (11) is provided at the upper end of the return movable frame (6); A reciprocating control mechanism, wherein the upper end of the sliding assembly plate (11) is connected to the reciprocating control mechanism, the reciprocating control mechanism comprises a multifunctional combination sleeve (13) and a control screw rod (14), the sliding assembly plate (11) is movably arranged in the return support box (5) through the sliding mechanism, and the sliding mechanism comprises a plurality of sliding balls (30); A multifunctional lubrication assembly, the multifunctional lubrication assembly being arranged in a multifunctional combination sleeve (13), the multifunctional lubrication assembly comprising an annular oil chamber (24) and an annular air groove (33), and the annular oil chamber (24) is arranged in coordination with a control screw rod (14) and a plurality of sliding balls (30); A pull connection seat (12) is vertically provided on one side of the upper end of the sliding assembly plate (11); a multifunctional combination sleeve (13) is horizontally fixed and plugged in the upper end of the pull connection seat (12) by bolts; a control screw rod (14) is horizontally rotated in the movable cavity of the return support box (5); and the multifunctional combination sleeve (13) is connected to the control screw rod (14) by a screw thread sleeve; A limit reference block (22) is horizontally arranged at the upper end of the movable chamber of the return support box (5) away from the machining spindle (7); a switching control chamber (16) is opened on one side of the multifunctional combination sleeve (13) close to the limit reference block (22); a hollow partition is arranged on one side of the switching control chamber (16); a prismatic synchronization rod (17) is horizontally and movably inserted in the center of the hollow partition; the prismatic synchronization rod (17) passes through the hollow partition and is provided with abutment push rods (18) and switching pistons (19) on both sides thereof; one side of the abutment push rod (18) movably passes through one side of the multifunctional combination sleeve (13); a skirt is arranged on one side of the abutment push rod (18) located in the switching control chamber (16); a return spring (20) is sleeved on the prismatic synchronization rod (17) between the skirt and the hollow partition; and when the tool holder (9) contacts the tool holder (3), one side of the abutment push rod (18) contacts the limit reference block (22); An annular oil chamber (24) is provided in the multifunctional combination sleeve (13) at a side away from the abutting push rod (18); an upper end of the annular oil chamber (24) penetrates the multifunctional combination sleeve (13) and is provided with a supplementary oil groove (25); a plugging cover is provided at the upper end of the supplementary oil groove (25) through a threaded sealing plug connection; a top oil and gas groove (23) is provided in the switching control chamber (16) at an upper end on one side of the return spring (20) and connected to the supplementary oil groove (25); an air supply groove (21) is provided in the switching control chamber (16) at a lower end on one side of the switching piston (19) and penetrates the multifunctional combination sleeve (13) and is close to the limit reference block (22); and when the abutting push rod (18) and the limit reference block (22) are pressed and contacted, the switching piston (19) and the air supply groove (21) are offset from each other.

2. The tool magazine structure applied to a parallel multi-channel CNC machine tool according to claim 1, characterized in that: The lower end of the return support box (5) is provided with a movable cavity, and the lower ends of both sides of the movable cavity are symmetrically provided with walking slides (10), and the two sides of the sliding assembly plate (11) are respectively horizontally movably inserted into the two walking slides (10), and the lower ends of the return movable frame (6) away from the sliding assembly plate (11) are horizontally provided with supporting wing plates (8) on both sides, and two tool clamping seats (9) are fixedly provided on the side of the supporting wing plates (8) close to the processing area of ​​the parallel multi-channel machine tool (1).

3. The tool magazine structure applied to a parallel multi-channel CNC machine tool according to claim 2, characterized in that: The sliding assembly plate (11) is inserted into the walking slide groove (10) and has a plurality of ball grooves on both upper and lower sides. The plurality of sliding balls (30) are movably inserted into the plurality of ball grooves, and one side of the plurality of sliding balls (30) is in contact with the upper and lower sides of the walking slide groove (10).

4. The tool magazine structure applied to a parallel multi-channel CNC machine tool according to claim 3, characterized in that: A diverter oil groove (26) is provided on one side of the lower end of the annular oil chamber (24) in the multifunctional combination sleeve (13), and an inflow groove is provided in the diverter oil groove (26) and in communication with the lower end of the annular oil chamber (24). A non-contact barrel groove (15) is provided on one side of the multifunctional combination sleeve (13) sleeved with the control screw rod (14), and the diameter of the non-contact barrel groove (15) is larger than the diameter of the control screw rod (14). A lifting oil groove (27) is provided on the upper end of the non-contact barrel groove (15). A transfer oil pipe (28) is provided on both sides of the diverter oil groove (26) and in communication with the transfer oil pipe (28), and a one-way valve is provided on one side of the lifting oil groove (27) and in communication with the diverter oil groove (26) and one side of the transfer oil pipe (28).

5. The tool magazine structure for a parallel multi-channel CNC machine tool according to claim 4, characterized in that: The sliding assembly plate (11) has a plurality of ball grooves correspondingly arranged up and down, a filling groove is vertically opened between two of the plurality of ball grooves correspondingly arranged up and down, and oil-absorbing cotton (31) is vertically inserted in each of the filling grooves, and two sides of the oil-absorbing cotton (31) are respectively placed in the ball grooves and in contact with the two sliding balls (30).

6. The tool magazine structure for a parallel multi-channel CNC machine tool according to claim 5, characterized in that: Both sides of the sliding assembly plate (11) are provided with connecting oil grooves (29) horizontally, and a side of the connecting oil groove (29) close to the plurality of oil-absorbing cottons (31) is provided with an oil delivery groove (32) horizontally connected thereto, and one side of the two transfer oil pipes (28) is connected and plugged with one side of the two connecting oil grooves (29) respectively.

7. The tool magazine structure for a parallel multi-channel CNC machine tool according to claim 6, characterized in that: An annular air groove (33) is provided on one side of the multifunctional combination sleeve (13) close to the non-contact cylindrical groove (15); an upper end of the annular air groove (33) is connected to the switching control chamber (16); a connecting air groove (34) is provided on one side close to the switching piston (19); a switching air groove (35) is provided in the switching piston (19) in communication with the lower end and one side; when the switching piston (19) is located at the position of the air supplying groove (21), one side of the connecting air groove (35) is connected to the air supplying groove (21); the connecting air groove (34) is connected to the connecting air groove (35) through the switching control chamber (16); and a plurality of cleaning holes (36) are provided on the upper side of the annular air groove (33) in communication with the non-contact cylindrical groove (15).

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