A precision gear-driven disc-type multi-station automated milling head exchange magazine structure

Abstract

This invention provides a precision gear-driven disc-type multi-station automated milling head exchange structure, relating to the field of composite gantry machine tool technology. It includes a milling head magazine chassis and a milling head drive assembly. The upper end of the chassis is provided with several chassis side panels. An integrally formed station rotating platform is mounted on the upper end of each chassis side panel. An integrally formed bearing limiting platform is mounted on the upper end of the station rotating platform. A milling head rotating platform is mounted on the upper end of the bearing limiting platform. This invention drives an upper-end conversion drive gear to rotate the exchange rotating disc, thereby rotating the upper-end milling head rotating platform. The precise drive of the servo motor enables the upper-end milling head drive assembly to reach an accurate station. Connecting to an external drive source, this method of milling head replacement occupies less overall machine tool space compared to existing technologies, offers more convenient replacement, reduces wear on the replacement structure, and extends maintenance cycles.

Description

Technical Field

[0001] This invention relates to the field of composite gantry milling machine technology, specifically to a precision gear-driven disc-type multi-station automated milling head exchange magazine structure. Background Technology

[0002] In the field of multi-functional gantry milling machines, it is becoming increasingly common for a single gantry to be equipped with multiple attachment milling heads, leading to a growing demand for multi-station automatic exchange attachment milling head magazines. For example, the gantry milling machine protective device and gantry milling machine described in application number CN202211064718.8, traditional attachment milling head magazines are mostly linear reciprocating pushers or fixed placements. For situations involving the exchange of multiple attachment milling heads, the former not only requires a longer travel distance but also necessitates increasing the Y-axis travel of the gantry milling machine, resulting in significant changes to the overall machine tool structure. The latter typically needs to be placed at one or both ends of the worktable to expand the number of head slots, but this method significantly occupies the travel distance in the worktable direction, affecting the normal machining range of the machine tool. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention addresses the problems raised in the background art.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a precision gear-driven disc-type multi-station automated milling head exchange structure, including a milling head storage chassis and a milling head drive assembly. The upper end of the milling head storage chassis is provided with several chassis side panels. The upper end of the chassis side panels is integrally provided with a station rotating platform. The upper end of the station rotating platform is integrally provided with a bearing limiting platform. The upper end of the bearing limiting platform is provided with a milling head rotating platform.

[0005] The milling head drive assembly is fixedly mounted on the upper surface of the milling head rotating platform.

[0006] Preferably, a panel stabilizing steel frame is provided between the side panels of the chassis base, a rotating bearing support platform is integrally provided on the inner side of the bearing limiting platform, and a rotating platform bearing seat is provided between the rotating bearing support platform and the milling head rotating platform.

[0007] Preferably, the lower end of the milling head rotary table is integrally provided with an exchangeable rotating gear disk, and the inner side of the workstation rotary table is integrally provided with a servo motor mounting platform.

[0008] A servo motor mounting plate is fixedly installed on one side of the lower surface of the servo motor mounting platform. A servo motor is fixedly installed at the lower end of the servo motor mounting plate. A conversion drive gear is coaxially fixedly installed on the output shaft of the servo motor. A motor mounting slot is opened on one of the side plates of the chassis base and at the rear end of the servo motor.

[0009] Preferably, the conversion drive tooth is meshed with the exchange rotating tooth disk.

[0010] Preferably, the milling head drive assembly includes: a milling head frame base plate, a milling head frame triangle iron, a milling head frame hoop, a milling head frame top plate, a sealing sleeve base groove, a sealing sleeve base, a milling head rotating bearing seat, an inner rotating box, a lower extension bushing, a drive shaft connecting box assembly, and a mounting fixing ring.

[0011] Milling head frame triangular irons are fixedly installed at the four corners of the upper surface of the milling head frame base plate. Several milling head frame hoops are set between the milling head frame triangular irons. A milling head frame top plate is fixedly installed at the upper end of the milling head frame triangular irons. A sealing sleeve base groove is opened in the middle of the milling head frame top plate.

[0012] An installation and fixing ring is integrally provided on the inner wall of the groove of the sealing sleeve base, and the sealing sleeve base is fixedly installed on the installation and fixing ring. A milling head rotating bearing seat is provided at the upper end of the sealing sleeve base.

[0013] An inner rotating box is fixedly installed at the lower end of the top plate of the milling head frame. A lower extension bushing is integrally provided at the lower end of the inner rotating box. A drive shaft connecting box assembly is fixedly installed at the lower end of the lower extension bushing.

[0014] Preferably, a milling cutter holder is rotatably mounted on the upper end of the milling head rotating bearing seat, and a rotating milling cutter is disposed in the middle of the milling cutter holder.

[0015] Preferably, a milling head drive shaft is coaxially fixedly mounted on the lower end of the milling cutter holder, and a variable diameter shaft is coaxially fixedly connected to the lower end of the milling head drive shaft.

[0016] Preferably, the drive shaft connecting box assembly includes: a connecting box main cylinder, a connecting box top cylinder, a drive connecting groove, a drive connecting sleeve, a drive connecting spline groove, a sleeve limiting ring, a sliding inner spline sleeve, a top spring platform, and a transverse fixed shaft.

[0017] The upper end of the main cylinder of the connecting box is integrally provided with a connecting box top cylinder, and the front end of the main cylinder of the connecting box is provided with a drive connecting groove. A drive connecting sleeve is rotatably provided in the drive connecting groove, and the front end of the drive connecting sleeve is provided with a drive connecting spline groove.

[0018] The front end of the inner wall of the main cylinder of the connecting box is integrally provided with a sleeve limiting ring, the rear end of the driving connecting sleeve and located inside the sleeve limiting ring is integrally provided with a sliding inner spline sleeve, the middle of the inner end of the sliding inner spline sleeve is integrally provided with a top spring platform, and the bottom of the main cylinder of the connecting box is rotatably installed with a transverse fixing shaft.

[0019] Preferably, the transverse fixed shaft is coaxially integrated with a first transmission bevel gear in the middle, and a sliding external spline sleeve is integrated at the outer end of the transverse fixed shaft, with a floating top spring installed inside the sliding external spline sleeve.

[0020] Preferably, a top shaft limiting plate is integrally provided on the inner wall of the top cylinder of the connecting box, a transmission top shaft is rotatably installed in the middle of the top shaft limiting plate, and a second transmission bevel tooth is integrally provided on the lower end of the transmission top shaft.

[0021] The first transmission bevel gear and the second transmission bevel gear are meshed together;

[0022] The upper end of the transmission top shaft is coaxially integrated with the variable diameter shaft.

[0023] This invention provides a precision gear-driven, disc-type, multi-station automated milling head exchange magazine structure. It has the following advantages:

[0024] (1) The present invention drives the upper conversion drive gear to rotate by starting the servo motor, thereby driving the upper milling head turntable to rotate. The precise drive of the servo motor enables the upper milling head drive group to reach the accurate working position and connect to an external drive source. The milling head is replaced in the above way. Compared with the prior art, it occupies less space in the overall machine tool, is more convenient to replace, reduces wear on the replacement structure, and has a longer maintenance cycle.

[0025] (2) In this invention, the drive source is inserted into the drive connection spline groove, and the sliding sleeve between the sliding inner spline sleeve and the sliding outer spline sleeve at the rear end can protect the external drive shaft from being damaged when the connection fails. The floating top spring at the rear end is used for reset, and then the upper transmission top shaft can be driven to rotate by the first transmission bevel gear meshing with the upper second transmission bevel gear.

[0026] (3) The present invention transmits the transmission top shaft to the upper variable diameter shaft and then to the milling head transmission shaft to rotate, thereby enabling upward transmission and driving the milling cutter holder head to rotate, thus enabling the upper rotating milling cutter to rotate and work. The lower sealing sleeve base can prevent oil stains from entering the milling head rotating bearing seat and affecting the lubrication rotation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a side view of the structure of the present invention;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure of line aa in the middle;

[0030] Figure 4 This is a schematic diagram of the milling head drive assembly in this invention;

[0031] Figure 5This is a side view of the milling head drive assembly in this invention.

[0032] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure of the middle BB line;

[0033] Figure 7 This is a schematic diagram of the drive shaft connection box assembly in this invention;

[0034] Figure 8 This is a side view of the drive shaft connecting box assembly in this invention.

[0035] Figure 9 For the present invention Figure 8 A schematic diagram of the cross-sectional structure of the middle CC line.

[0036] The components include: 1. Milling head magazine base; 2. Base side panel; 3. Workstation rotating table; 4. Bearing limiting table; 5. Milling head rotating table; 6. Milling head drive assembly; 601. Milling head frame base plate; 602. Milling head frame triangle iron; 603. Milling head frame hoop; 604. Milling head frame top plate; 605. Sealing sleeve base groove; 606. Sealing sleeve base; 607. Milling head rotating bearing seat; 608. Milling cutter holder head; 609. Rotating milling cutter; 610. Inner rotating box; 611. Lower extension bushing; 612. Drive shaft connecting box assembly; 6121. Connecting box main cylinder; 6122. Connecting box top cylinder; 6123. Top shaft limiting plate; 6124. Transmission top shaft; 6125. Drive connecting groove; 612 6. Drive connecting sleeve; 6127. Drive connecting spline groove; 6128. Sleeve limit ring; 6129. Sliding inner spline sleeve; 61210. Top spring platform; 61211. Sliding outer spline sleeve; 61212. Transverse fixed shaft; 61213. First transmission bevel gear; 61214. Floating top spring; 61215. Second transmission bevel gear; 613. Mounting fixing ring; 614. Milling head drive shaft; 615. Variable diameter shaft; 7. Panel stabilizing steel frame; 8. Servo motor mounting platform; 9. Rotating bearing support platform; 10. Servo motor lifting plate; 11. Servo motor; 12. Conversion drive gear; 13. Motor mounting slot; 14. Exchange rotating gear disk; 15. Rotating table bearing seat. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, those skilled in the art who have not made any innovative embodiments are all within the scope of protection of the present invention.

[0038] like Figures 1 to 3As shown, this embodiment of the invention provides a precision gear-driven disc-type multi-station automated milling head exchange structure, including a milling head storage chassis 1 and a milling head drive assembly 6. The upper end of the milling head storage chassis 1 is provided with several chassis side panels 2. A station rotating platform 3 is integrally provided on the upper end of each chassis side panel 2. A bearing limiting platform 4 is integrally provided on the upper end of the station rotating platform 3. A milling head rotating platform 5 is provided on the upper end of the bearing limiting platform 4. The milling head drive assembly 6 is fixedly mounted on the upper surface of the milling head rotating platform 5. Panel stabilizing steel frames 7 are provided at intervals between the chassis side panels 2. A rotating bearing support platform 9 is integrally provided inside the bearing limiting platform 4. A rotating table bearing seat 15 is provided between the bearing support platform 9 and the milling head rotating table 5. An exchange rotating gear disk 14 is integrally provided at the lower end of the milling head rotating table 5. A servo motor mounting platform 8 is integrally provided on the inner side of the workstation rotating table 3. A servo motor lifting plate 10 is fixedly installed on one side of the lower surface of the servo motor mounting platform 8. A servo motor 11 is fixedly installed at the lower end of the servo motor lifting plate 10. A conversion drive gear 12 is coaxially fixedly installed on the output shaft of the servo motor 11. A motor mounting slot 13 is opened on one of the chassis side panels 2 and located at the rear end of the servo motor 11. The conversion drive gear 12 is meshed with the exchange rotating gear disk 14.

[0039] In the above technical solution, the servo motor 11 drives the upper conversion drive gear 12 to mesh with the exchange rotating gear disk 14 to rotate, thereby the exchange rotating gear disk 14 drives the upper milling head rotating table 5 to rotate. The precise drive of the servo motor 11 enables the upper milling head drive group 6 to reach the accurate working position and connect to an external drive source. The milling head is replaced in the above way. Compared with the existing technology, it occupies less space in the overall machine tool, is more convenient to replace, reduces wear on the replacement structure, and has a longer maintenance cycle.

[0040] like Figure 1 , Figures 4 to 6As shown, the milling head drive assembly 6 includes: a milling head frame base plate 601, a milling head frame triangular iron 602, a milling head frame hoop 603, a milling head frame top plate 604, a sealing sleeve base groove 605, a sealing sleeve base 606, a milling head rotating bearing seat 607, an inner rotating box 610, a lower extension bushing 611, a drive shaft connecting box assembly 612, and a mounting fixing ring 613; milling head frame triangular irons 602 are fixedly installed at the four corners of the upper surface of the milling head frame base plate 601, and several milling head frame hoop 603 are arranged between the milling head frame triangular irons 602; a milling head frame top plate 604 is fixedly installed on the upper end of the milling head frame triangular irons 602, and a sealing sleeve base groove 605 is opened in the middle of the milling head frame top plate 604; the inner wall of the sealing sleeve base groove 605 is integrally formed with The milling head frame is provided with a mounting ring 613, on which a sealing sleeve base 606 is fixedly mounted. A milling head rotating bearing seat 607 is provided at the upper end of the sealing sleeve base 606. An inner rotating box 610 is fixedly mounted at the lower end of the top plate 604 of the milling head frame. A lower extension bushing 611 is integrally provided at the lower end of the inner rotating box 610. A drive shaft connecting box 612 is fixedly mounted at the lower end of the lower extension bushing 611. A milling cutter holding head 608 is rotatably mounted at the upper end of the milling head rotating bearing seat 607. A rotating milling cutter 609 is provided in the middle of the milling cutter holding head 608. A milling head drive shaft 614 is coaxially fixedly mounted at the lower end of the milling cutter holding head 608. A variable diameter shaft 615 is coaxially fixedly connected at the lower end of the milling head drive shaft 614.

[0041] In the above technical solution, the transmission top shaft 6124 transmits power to the upper variable diameter shaft 615, and then to the milling head transmission shaft 614 to rotate, thereby enabling upward transmission and driving the milling cutter holder head 608 to rotate, thus enabling the upper rotating milling cutter 609 to rotate and work. The lower sealing sleeve base 606 can prevent oil stains from entering the milling head rotating bearing seat 607 and affecting the lubrication rotation.

[0042] like Figure 4 , Figures 7 to 9As shown, the drive shaft connecting box assembly 612 includes: a connecting box main cylinder 6121, a connecting box top cylinder 6122, a drive connecting groove 6125, a drive connecting sleeve 6126, a drive connecting spline groove 6127, a sleeve limiting ring 6128, a sliding inner spline sleeve 6129, a top spring platform 61210, and a transverse fixed shaft 61212; the connecting box main cylinder 6121 has the connecting box top cylinder 6122 integrally provided at its upper end, and the connecting box main cylinder 6121... The front end of the 21 has a drive connection groove 6125, within which a drive connection sleeve 6126 is rotatably disposed. The front end of the drive connection sleeve 6126 has a drive connection spline groove 6127. A sleeve limiting ring 6128 is integrally disposed at the front end of the inner wall of the main sleeve 6121 of the connecting box. A sliding internal spline sleeve 6129 is integrally disposed at the rear end of the drive connection sleeve 6126 and inside the sleeve limiting ring 6128. A top spring platform 61210 is integrally provided in the middle of the inner end of the sliding internal spline sleeve 6129. A transverse fixed shaft 61212 is rotatably mounted on the bottom of the main cylinder 6121 of the connecting box. A first transmission bevel gear 61213 is integrally provided coaxially in the middle of the transverse fixed shaft 61212. A sliding external spline sleeve 61211 is integrally provided at the outer end of the transverse fixed shaft 61212. A floating top spring 61214 is provided inside the sliding external spline sleeve 61211. A top shaft limiting plate 6123 is integrally provided on the inner wall of the top cylinder 6122 of the connecting box. A transmission top shaft 6124 is rotatably mounted in the middle of the top shaft limiting plate 6123. A second transmission bevel gear 61215 is integrally provided coaxially at the lower end of the transmission top shaft 6124. The first transmission bevel gear 61213 and the second transmission bevel gear 61215 are meshed together. The upper end of the transmission top shaft 6124 is integrally provided coaxially with the variable diameter shaft 615.

[0043] In the above technical solution, the drive source is inserted into the drive connection spline groove 6127, and the sliding sleeve between the sliding inner spline sleeve 6129 and the sliding outer spline sleeve 61211 at the rear end can protect the external drive shaft from being damaged when the connection fails. The floating top spring 61214 at the rear end is used for reset, and then the first transmission bevel tooth 61213 meshes with the upper second transmission bevel tooth 61215 to rotate, thereby driving the upper transmission top shaft 6124 to rotate.

[0044] Working principle:

[0045] This invention drives the upper conversion drive gear 12 to mesh with the exchange rotating gear disk 14 by starting the servo motor 11, thereby causing the exchange rotating gear disk 14 to drive the upper milling head rotating table 5 to rotate. The precise drive of the servo motor 11 enables the upper milling head drive group 6 to reach the accurate working position and connect to an external drive source. The milling head is replaced in the above way. Compared with the prior art, it occupies less space in the overall machine tool, is more convenient to replace, reduces wear on the replacement structure, and has a longer maintenance cycle.

[0046] The drive source is inserted into the drive connection spline groove 6127, and the sliding sleeve between the sliding inner spline sleeve 6129 and the sliding outer spline sleeve 61211 at the rear end can protect the external drive shaft from being damaged when the connection fails. The floating top spring 61214 at the rear end is used for reset, and then the first transmission bevel tooth 61213 meshes with the upper second transmission bevel tooth 61215 to rotate, thereby driving the upper transmission top shaft 6124 to rotate.

[0047] The transmission shaft 6124 drives the upper variable-diameter shaft 615, which in turn drives the milling head transmission shaft 614 to rotate. This upward transmission causes the milling cutter holder 608 to rotate, enabling the upper rotating milling cutter 609 to rotate and operate. The lower sealing sleeve base 606 prevents oil from entering the milling head rotating bearing seat 607 and affecting lubrication. Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the invention and are not intended to limit the implementation of the invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A precision gear-driven disc-type multi-station automated milling head exchange structure, comprising a milling head storage chassis (1) and a milling head drive assembly (6), characterized in that, The upper end of the milling head magazine base (1) is provided with several base side panels (2), the upper end of the base side panel (2) is provided with a station rotating table (3), the upper end of the station rotating table (3) is provided with a bearing limiting table (4), and the upper end of the bearing limiting table (4) is provided with a milling head rotating table (5). The milling head drive assembly (6) is fixedly installed on the upper surface of the milling head rotary table (5); The milling head drive assembly (6) includes: a milling head frame base plate (601), a milling head frame triangular iron (602), a milling head frame hoop (603), a milling head frame top plate (604), a sealing sleeve base groove (605), a sealing sleeve base (606), a milling head rotating bearing seat (607), an inner rotating box (610), a lower extension bushing (611), a drive shaft connecting box assembly (612), and a mounting fixing ring (613). Milling head frame triangular irons (602) are fixedly installed at the four corners of the upper surface of the milling head frame base plate (601). Several milling head frame hoops (603) are arranged between the milling head frame triangular irons (602). A milling head frame top plate (604) is fixedly installed on the upper end of the milling head frame triangular irons (602). A sealing sleeve base groove (605) is opened in the middle of the milling head frame top plate (604). An installation fixing ring (613) is integrally provided on the inner wall of the sealing sleeve base groove (605), and a sealing sleeve base (606) is fixedly installed on the installation fixing ring (613). A milling head rotating bearing seat (607) is provided at the upper end of the sealing sleeve base (606). An inner rotating box (610) is fixedly installed at the lower end of the milling head frame top plate (604). A lower extension bushing (611) is integrally provided at the lower end of the inner rotating box (610). A drive shaft connecting box assembly (612) is fixedly installed at the lower end of the lower extension bushing (611). A milling cutter holder (608) is rotatably mounted on the upper end of the milling head rotating bearing seat (607), and a rotating milling cutter (609) is provided in the middle of the milling cutter holder (608). The workstation rotary table (3) is integrated with a servo motor mounting platform (8) on its inner side. The milling head turntable (5) is integrated with an exchange rotating gear disk (14) at its lower end. The servo motor mounting plate (10) is fixedly installed on one side of the lower surface of the servo motor mounting plate (8). The servo motor (11) is fixedly installed at the lower end of the servo motor mounting plate (10). The conversion drive gear (12) is coaxially fixedly installed on the output shaft of the servo motor (11). A motor mounting slot (13) is opened on one of the chassis side panels (2) and located at the rear end of the servo motor (11). By starting the servo motor (11) to drive the upper conversion drive gear (12) to mesh with the exchange rotating gear disk (14) to rotate, the exchange rotating gear disk (14) drives the upper milling head rotating table (5) to rotate. Through the precise drive of the servo motor (11), the upper milling head drive group (6) can reach the accurate working position and connect to the external drive source to drive the milling cutter holder head (608) to rotate, thereby enabling the upper rotating milling cutter (609) to rotate and work.

2. The precision gear-driven disc-type multi-station automated milling head exchange magazine structure according to claim 1, characterized in that, A panel stabilizing steel frame (7) is provided between the side panels (2) of the chassis seat. A rotating bearing support platform (9) is integrally provided on the inner side of the bearing limiting platform (4). A rotating platform bearing seat (15) is provided between the rotating bearing support platform (9) and the milling head rotating platform (5).

3. The precision gear-driven disc-type multi-station automated milling head exchange magazine structure according to claim 2, characterized in that, The lower end of the milling cutter holder (608) is coaxially fixedly mounted with a milling head drive shaft (614), and the lower end of the milling head drive shaft (614) is coaxially fixedly connected with a variable diameter shaft (615).

4. The precision gear-driven disc-type multi-station automated milling head exchange magazine structure according to claim 3, characterized in that, The drive shaft connecting box assembly (612) includes: a connecting box main cylinder (6121), a connecting box top cylinder (6122), a drive connecting groove (6125), a drive connecting sleeve (6126), a drive connecting spline groove (6127), a sleeve limiting ring (6128), a sliding inner spline sleeve (6129), a top spring platform (61210), and a transverse fixed shaft (61212). The upper end of the main cylinder (6121) of the connecting box is integrally provided with a top cylinder (6122) of the connecting box. The front end of the main cylinder (6121) of the connecting box is provided with a drive connection groove (6125). A drive connection sleeve (6126) is rotatably provided in the drive connection groove (6125). The front end of the drive connection sleeve (6126) is provided with a drive connection spline groove (6127). The front end of the inner wall of the main cylinder (6121) of the connecting box is integrally provided with a sleeve limiting ring (6128). The rear end of the driving connecting sleeve (6126) and located inside the sleeve limiting ring (6128) is integrally provided with a sliding inner spline sleeve (6129). The middle of the inner end of the sliding inner spline sleeve (6129) is integrally provided with a top spring platform (61210). The bottom of the main cylinder (6121) of the connecting box is rotatably installed with a transverse fixed shaft (61212).

5. The precision gear-driven disc-type multi-station automated milling head exchange magazine structure according to claim 4, characterized in that, The transverse fixed shaft (61212) is coaxially integrated with a first transmission bevel gear (61213) in the middle, and a sliding external spline sleeve (61211) is integrated at the outer end of the transverse fixed shaft (61212). A floating top spring (61214) is provided inside the sliding external spline sleeve (61211).

6. The precision gear-driven disc-type multi-station automated milling head exchange magazine structure according to claim 5, characterized in that, A top shaft limiting plate (6123) is integrally provided on the inner wall of the top cylinder (6122) of the connecting box. A transmission top shaft (6124) is rotatably installed in the middle of the top shaft limiting plate (6123). A second transmission bevel gear (61215) is integrally provided on the lower end of the transmission top shaft (6124) on the same axis. The first transmission bevel gear (61213) and the second transmission bevel gear (61215) are meshed together; The upper end of the transmission top shaft (6124) is coaxially integrated with the variable diameter shaft (615).

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