CN215919834U - Broach mechanism of ultrashort main shaft - Google Patents
Broach mechanism of ultrashort main shaft Download PDFInfo
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- CN215919834U CN215919834U CN202122225531.9U CN202122225531U CN215919834U CN 215919834 U CN215919834 U CN 215919834U CN 202122225531 U CN202122225531 U CN 202122225531U CN 215919834 U CN215919834 U CN 215919834U
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- main shaft
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Abstract
The utility model discloses a broach mechanism of an ultra-short main shaft, which comprises a main shaft shell, an inner lining shell fixed in the main shaft shell, a transmission shaft rotatably installed in the inner lining shell, and a short main shaft broach mechanism, wherein the lower end of the transmission shaft is fixedly connected with a transmission disc; the upper end of the short main shaft is provided with a plate groove for the nut plate to move up and down, the end surface of the plate groove is also provided with a plurality of spring grooves in a distributed manner, and the push rod is sleeved with a butterfly spring. The utility model has reasonable structural design, the push rod and the belleville spring are arranged and installed in the short main shaft, the size of the integral structure in the axial direction is smaller, the occupation of the axial space is reduced, and the utility model can be effectively suitable for occasions with smaller processing space.
Description
Technical Field
The utility model relates to the technical field of installation of milling cutters of machine tools, in particular to a broach mechanism of an ultra-short spindle.
Background
The milling machine is a machine tool with wide application, and can process planes (horizontal planes and vertical planes), grooves (key grooves, T-shaped grooves, dovetail grooves and the like), tooth dividing parts (gears, spline shafts and chain wheels), spiral surfaces (threads and spiral grooves) and various curved surfaces on the milling machine. In addition, the method can be used for machining the surface and inner hole of the revolving body, cutting off the revolving body, and the like.
The main shaft of the existing milling head or main machine is long in axial space, and cannot be suitable for occasions that the main shaft of the milling head or main machine cannot be too long due to space limitation and automatic broaching can be realized.
How to design a broach mechanism with small axial space occupation and an ultra-short main shaft capable of automatically loosening and pulling a cutter head cutter.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a broach mechanism with an ultra-short spindle to solve the above problems.
In order to achieve the purpose, the utility model provides the following technical scheme:
a broach mechanism of an ultra-short spindle comprises a spindle shell, a lining shell fixed inside the spindle shell, a transmission shaft rotatably mounted inside the lining shell, and a short spindle broach mechanism, wherein the lower end of the transmission shaft is fixedly connected with a transmission disc;
the connecting pad seat is internally and fixedly inserted with a bearing seat, a short main shaft is rotatably arranged in the bearing seat, a tapered groove for installing a cutter, a pull claw expansion groove and a pull claw installation groove for installing a pull claw are sequentially formed in the short main shaft from bottom to top, the pull nail is movably inserted in the pull claw installation groove from top to bottom, the lower end of the pull nail is in driving connection with the pull claw, the upper end of the pull nail is fixedly connected with a nut plate, and at least two extension seat plates are distributed and extended on the circumferential outer wall of the nut plate;
the upper end of the short main shaft is provided with a disc groove for the nut disc to move up and down, the end surface of the disc groove is also provided with a plurality of spring grooves in a distributed manner, the end surface of each spring groove is provided with a push rod groove downwards, a push rod is movably inserted in the push rod groove up and down, the rod cap of the push rod is in abutting connection with the end surface of the nut disc, the push rod is sleeved with a butterfly spring, the upper end of the butterfly spring is in abutting connection with the lower end surface of the rod cap of the push rod, and the lower end of the butterfly spring is in abutting connection with the end surface of the spring groove;
the upper end of the short main shaft is fixedly connected with the transmission disc, the circumferential side wall of the upper end of the short main shaft is provided with lower seat plate grooves for the up-and-down movement of the extension seat plate in a distributed manner, and the lower end face of the transmission disc is provided with upper seat plate grooves for the up-and-down movement of the extension seat plate;
an oil cylinder seat is arranged between the bearing seat and the lining shell in a pressing mode, an annular oil cylinder piston is movably arranged in the oil cylinder seat from top to bottom, a piston step groove used for pushing the extension seat plate to move downwards is formed in the inner ring of the oil cylinder piston, and an oil cylinder cavity is defined between the outer ring of the oil cylinder piston and the oil cylinder seat.
Preferably, an upper hydraulic oil channel is formed in the inner lining shell, an oil inlet and outlet nozzle communicated with the upper hydraulic oil channel is fixedly mounted on the inner lining shell, a lower hydraulic oil channel communicated with the upper hydraulic oil channel is formed in the oil cylinder seat, and the other end of the lower hydraulic oil channel is communicated with the oil cylinder cavity.
Preferably, the lower end surface of the oil cylinder piston is further provided with a plurality of upper guide grooves, the upper end surface of the bearing seat is provided with a plurality of lower guide grooves, guide pins are inserted in the lower guide grooves, and the upper ends of the guide pins are movably inserted in the upper guide grooves.
Preferably, the lower end surface of the oil cylinder piston is further provided with a plurality of upper spring grooves, the upper end surface of the bearing seat is provided with a plurality of lower spring grooves, the lower spring grooves are internally inserted with return springs, and the upper ends of the return springs are inserted into the upper spring grooves.
Preferably, a bearing seat flange extends from the upper end of the bearing seat, the bearing seat flange is fixedly connected with the upper end face of the connecting pad through a countersunk head bolt, and the bearing seat flange is inserted into the main shaft shell.
Preferably, the lower end surface of the short main shaft is further provided with at least one pair of transverse keyways, and key blocks for positioning the cutter are fixed in the transverse keyways.
Compared with the prior art, the utility model has the beneficial effects that: the tool bit tensioning and fixing device is reasonable in structural design, the push rod and the butterfly spring are arranged and installed inside the short main shaft, the nut disc is pushed to rise through the push rod and the butterfly spring, the nut disc drives the pull nail to rise, the pull nail pulls the pull claw, the pull claw is completely contracted to enter the pull claw installation groove, the end head of the tool can be tensioned by the contracted pull claw, and therefore the tool is tensioned and fixed.
Drawings
FIG. 1 is a schematic view of a broach mechanism for an ultra-short spindle;
FIG. 2 is a schematic view of the structure of the assembly of the short spindle and the transmission disc in the broach mechanism with an ultra-short spindle;
fig. 3 is a schematic structural view of a cross section a-a of a broach mechanism with an ultra-short spindle.
In the figure: 1-main shaft shell, 2-inner lining shell, 21-oil inlet and outlet nozzle, 22-upper hydraulic oil channel, 23-lower hydraulic oil channel, 3-transmission shaft, 31-transmission disc, 32-upper seat plate groove, 4-oil cylinder seat, 41-oil cylinder cavity, 5-oil cylinder piston, 51-return spring, 52-guide pin, 6-bearing seat, 7-connecting cushion seat, 8-rivet, 81-nut disc, 82-extending seat plate, 9-pulling claw, 10-short main shaft, 101-conical groove, 102-pulling claw unfolding groove, 103-pulling claw mounting groove, 104-transverse key groove, 105-key block, 106-push rod, 107-butterfly spring, 108-lower seat plate groove and 109-spring groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1 to 3, a broach mechanism of an ultra-short spindle includes a spindle housing 1, a lining shell 2 fixed inside the spindle housing 1, a transmission shaft 3 rotatably installed inside the lining shell 2, and a transmission disc 31 fixedly connected to a lower end of the transmission shaft 3, and further includes a short spindle broach mechanism, where the short spindle broach mechanism includes a connection pad seat 7 fixedly installed on a lower end surface of the spindle housing 1, a bearing seat 6, a short spindle 10, a set of jaws 9, a pull nail 8, a nut disc 81, an oil cylinder seat 4, an oil cylinder piston 5, a push rod 106, and a belleville spring 107;
a bearing seat 6 is fixedly inserted into the connecting pad seat 7, a short spindle 10 is rotatably mounted in the bearing seat 6, a tapered groove 101 for mounting a cutter, a pull claw unfolding groove 102 and a pull claw mounting groove 103 for mounting a pull claw 9 are sequentially formed in the short spindle 10 from bottom to top, the pull nail 8 is movably inserted into the pull claw mounting groove 103 up and down, the lower end of the pull nail 8 is in driving connection with the pull claw 9, a nut plate 81 is fixedly connected to the upper end of the pull nail 8, and at least two extension seat plates 82 are distributed and extended on the circumferential outer wall of the nut plate 81;
the upper end of the short main shaft 10 is provided with a disc groove for the nut disc 81 to move up and down, the end surface of the disc groove is also provided with a plurality of spring grooves 109 in a distributed manner, the end surface of each spring groove 109 is provided with a push rod groove 110 downwards, a push rod 106 is movably inserted in the push rod groove 110 up and down, the rod cap of the push rod 106 is in abutting connection with the lower end surface of the nut disc 81, a butterfly spring 107 is sleeved on the push rod 106, the upper end of the butterfly spring 107 is in abutting connection with the lower end surface of the rod cap of the push rod 106, and the lower end of the butterfly spring 107 is in abutting connection with the end surface of the spring groove 109;
the upper end of the short main shaft 10 is fixedly connected with the transmission disc 31, the circumferential side wall of the upper end of the short main shaft 10 is distributed and provided with a lower seat plate groove 108 for the up-and-down movement of the extension seat plate 82, and the lower end surface of the transmission disc 31 is provided with an upper seat plate groove 32 for the up-and-down movement of the extension seat plate 82;
an oil cylinder seat 4 is arranged between the bearing seat 6 and the lining shell 2 in a pressing mode, an annular oil cylinder piston 5 is movably arranged in the oil cylinder seat 4 from top to bottom, a piston step groove used for pushing the extension seat plate 82 to move downwards is formed in the inner ring of the oil cylinder piston 5, and an oil cylinder cavity 41 is defined between the outer ring of the oil cylinder piston 5 and the oil cylinder seat 4.
The working principle of the utility model is as follows: when the milling head cutter is disassembled or replaced, hydraulic oil is introduced into the oil cylinder cavity 41, the oil cylinder piston 5 is driven to move downwards through hydraulic pressure, the oil cylinder piston 5 pushes the extension seat plate 82, the nut plate 81 and the blind rivet 8 move downwards, the blind rivet 8 pushes the pull claw 9 to move downwards, the pull claw convex part at the lower end of the pull claw 9 can gradually expand towards the pull claw expansion groove 102, the pull claw 9 is separated from the top end of the cutter, and at the moment, the milling head cutter can be disassembled or replaced;
when a cutter head is installed, hydraulic oil in the oil cylinder cavity 41 is discharged, the oil cylinder piston 5 moves upwards, the nut disc 81 rises under the action of the elastic force of the butterfly springs 107, the rising nut disc 81 pulls the pull nail 8 to rise, the pull nail 8 pulls the pull claw 9, the pull claw 9 is made to completely contract into the pull claw installation groove 103, the top end of the cutter can be tensioned by the contracted pull claw 9, and accordingly tensioning and fixing of the cutter are achieved.
The tool bit is reasonable in structural design, the push rod 106 and the butterfly spring 107 are arranged and installed inside the short main shaft 10, the nut disc 81 is pushed to rise through the push rod 106 and the butterfly spring 107, the nut disc 81 drives the pull nail 8 to rise, the pull nail 8 pulls the pull claw 9, the pull claw 9 is made to completely shrink into the pull claw mounting groove 103, the top end of the tool bit can be tightened through the shrunk pull claw 9, accordingly, tightening and fixing of the tool bit are achieved, the size of the whole structure in the axial direction is small, occupation of axial space is reduced, and the tool bit can be effectively suitable for being used in occasions with small machining space.
Specifically, an upper hydraulic oil passage 22 is formed in the inner lining shell 2, an oil inlet and outlet nozzle 21 communicated with the upper hydraulic oil passage 22 is fixedly mounted on the inner lining shell 2, a lower hydraulic oil passage 23 communicated with the upper hydraulic oil passage 22 is formed in the oil cylinder seat 4, and the other end of the lower hydraulic oil passage 23 is communicated with the oil cylinder cavity 41. The structure sets up rationally, assembles compact structure, the letting in and the discharge of the hydraulic oil of being convenient for.
In order to limit the circumferential rotation of the cylinder piston 5, the lower end surface of the cylinder piston 5 is further provided with a plurality of upper guide grooves, the upper end surface of the bearing seat 6 is provided with a plurality of lower guide grooves, guide pins 52 are inserted into the lower guide grooves, and the upper ends of the guide pins 52 are movably inserted into the upper guide grooves.
The lower end face of the oil cylinder piston 5 is further provided with a plurality of upper spring grooves, the upper end face of the bearing seat 6 is provided with a plurality of lower spring grooves, the lower spring grooves are internally inserted with return springs 51, and the upper ends of the return springs 51 are inserted into the upper spring grooves. When the hydraulic oil needs to be discharged, the hydraulic oil can be pumped without external power, and the oil cylinder piston 5 can be driven to move upwards under the action of the elastic force of the return spring 51, so that the hydraulic oil is slowly extruded.
A bearing seat flange extends from the upper end of the bearing seat 6, the bearing seat flange is fixedly connected with the upper end face of the connecting pad seat 7 through a countersunk head bolt, and the bearing seat flange is inserted into the main shaft shell 1. The structure is convenient to assemble and disassemble, and the whole axial size occupies a small area.
At least one pair of transverse keyways 104 are further formed in the lower end surface of the stub spindle 10, and key blocks 105 for positioning a tool are fixed in the transverse keyways 104. The cutter of the milling head can be conveniently positioned and installed.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
Claims (6)
1. The utility model provides a broach mechanism of ultrashort main shaft, includes main shaft housing (1), inside fixed inside casing (2) of main shaft housing (1) and inside transmission shaft (3) of rotating the installation of inside casing (2), the lower extreme fixedly connected with driving disc (31) of transmission shaft (3), its characterized in that: the short spindle broaching mechanism comprises a connecting pad seat (7), a bearing seat (6), a short spindle (10), a group of pulling claws (9), a pulling nail (8), a nut disc (81), an oil cylinder seat (4), an oil cylinder piston (5), a push rod (106) and a belleville spring (107), wherein the connecting pad seat is fixedly arranged on the lower end surface of the spindle shell (1);
a bearing seat (6) is fixedly inserted in the connecting pad seat (7), a short main shaft (10) is rotatably installed in the bearing seat (6), a tapered groove (101) for installing a cutter, a pull claw expansion groove (102) and a pull claw installation groove (103) for installing a pull claw (9) are sequentially formed in the short main shaft (10) from bottom to top, the pull nail (8) is movably inserted in the pull claw installation groove (103) from top to bottom, the lower end of the pull nail (8) is in driving connection with the pull claw (9), a nut disc (81) is fixedly connected to the upper end of the pull nail (8), and at least two extension seat plates (82) are distributed and extended on the outer wall of the circumference of the nut disc (81);
the upper end of the short main shaft (10) is provided with a disc groove for the nut disc (81) to move up and down, the end face of the disc groove is further provided with a plurality of spring grooves (109) in a distributed manner, the end face of each spring groove (109) is provided with a push rod groove (110) downwards, a push rod (106) is movably inserted in each push rod groove (110) up and down, a rod cap of the push rod (106) is in abutting connection with the lower end face of the nut disc (81), a butterfly spring (107) is sleeved on each push rod (106), the upper end of each butterfly spring (107) is in abutting connection with the lower end face of the rod cap of each push rod (106), and the lower end of each butterfly spring (107) is in abutting connection with the end face of each spring groove (109);
the upper end of the short main shaft (10) is fixedly connected with the transmission disc (31), the circumferential side wall of the upper end of the short main shaft (10) is provided with lower seat plate grooves (108) for the extension seat plate (82) to move up and down, and the lower end face of the transmission disc (31) is provided with upper seat plate grooves (32) for the extension seat plate (82) to move up and down;
an oil cylinder seat (4) is arranged between the bearing seat (6) and the lining shell (2) in a pressing mode, an annular oil cylinder piston (5) is movably mounted in the oil cylinder seat (4) from top to bottom, a piston step groove used for pushing the extension seat plate (82) to move downwards is formed in the inner ring of the oil cylinder piston (5), and an oil cylinder cavity (41) is defined between the outer ring of the oil cylinder piston (5) and the oil cylinder seat (4).
2. The broach mechanism for an ultra-short spindle according to claim 1, wherein: inside upper portion hydraulic oil passageway (22) of having seted up of inside lining shell (2), fixed mounting has business turn over glib talker (21) that are used for with upper portion hydraulic oil passageway (22) intercommunication on lining shell (2), set up lower part hydraulic oil passageway (23) that are used for with upper portion hydraulic oil passageway (22) intercommunication in hydro-cylinder seat (4), the other end and hydro-cylinder cavity (41) intercommunication of lower part hydraulic oil passageway (23).
3. The broach mechanism for an ultra-short spindle according to claim 1, wherein: the lower end face of the oil cylinder piston (5) is further provided with a plurality of upper guide grooves, the upper end face of the bearing seat (6) is provided with a plurality of lower guide grooves, guide pins (52) are inserted in the lower guide grooves, and the upper ends of the guide pins (52) are movably inserted in the upper guide grooves.
4. The broach mechanism for an ultra-short spindle according to claim 1, wherein: the lower end face of the oil cylinder piston (5) is further provided with a plurality of upper spring grooves, the upper end face of the bearing seat (6) is provided with a plurality of lower spring grooves, the lower spring grooves are internally inserted with return springs (51), and the upper ends of the return springs (51) are inserted into the upper spring grooves.
5. The broach mechanism for an ultra-short spindle according to claim 1, wherein: the upper end of the bearing seat (6) extends to form a bearing seat flange, the bearing seat flange is fixedly connected with the upper end face of the connecting pad seat (7) through a countersunk head bolt, and the bearing seat flange is inserted into the main shaft shell (1).
6. The broach mechanism for an ultra-short spindle according to claim 1, wherein: the lower end face of the short main shaft (10) is further provided with at least one pair of transverse key grooves (104), and key blocks (105) used for positioning a cutter are fixed in the transverse key grooves (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122225531.9U CN215919834U (en) | 2021-09-15 | 2021-09-15 | Broach mechanism of ultrashort main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122225531.9U CN215919834U (en) | 2021-09-15 | 2021-09-15 | Broach mechanism of ultrashort main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215919834U true CN215919834U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122225531.9U Active CN215919834U (en) | 2021-09-15 | 2021-09-15 | Broach mechanism of ultrashort main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215919834U (en) |
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2021
- 2021-09-15 CN CN202122225531.9U patent/CN215919834U/en active Active
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