CN217315896U - Electric spindle of machine tool - Google Patents
Electric spindle of machine tool Download PDFInfo
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- CN217315896U CN217315896U CN202220180396.2U CN202220180396U CN217315896U CN 217315896 U CN217315896 U CN 217315896U CN 202220180396 U CN202220180396 U CN 202220180396U CN 217315896 U CN217315896 U CN 217315896U
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- pull rod
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Abstract
The utility model provides a lathe electricity main shaft belongs to lathe technical field. The problem of inconvenient operation when connecting different specification cavity chucks is solved. The utility model provides an electric main shaft of lathe, including the headstock, both ends stretch out the outer axis body of headstock and wear to locate the pull rod in the axis body, the axis body rear end is connected with cavity revolving cylinder and pull rod rear end and cavity revolving cylinder's piston is connected, the front end of axis body is connected with the cavity chuck, be equipped with the movable block that can follow its axial displacement and drive each jack catch synchronization action of cavity chuck in the cavity chuck, movable block female connection has the switching piece, be provided with the mating holes that sets up with the same central line of movable block on the switching piece, the front end threaded connection of pull rod is in the mating holes, still be equipped with along its axial in the switching piece and run through switching piece rear end face and have the internal screw thread connecting hole. The method has the advantages of convenience in operation, high switching efficiency and the like.
Description
Technical Field
The utility model belongs to the technical field of the lathe, a lathe electricity main shaft is related to.
Background
In lathe equipment, a servo motor or an asynchronous motor is generally used for driving a mechanical spindle through belt transmission, but the problems of low rotating speed, large vibration, easy slippage of a belt and high noise exist. Therefore, more and more lathe equipment is provided with an electric spindle, and the electric spindle is a technology for integrating a motor and a spindle. At present, a conventional electric spindle basically comprises a spindle box, a shaft body arranged in the spindle box and with two ends extending out of the spindle box, and a pull rod penetrating through the shaft body, wherein a motor rotor and a motor stator are arranged outside the shaft body positioned in the spindle box, the front end of the shaft body is connected with a hollow chuck (the hollow chuck comprises a disc-shaped body, a plurality of jaws which are distributed along the circumferential direction and can slide along the radial direction of the body, and a movable block which is arranged in the body and can move along the axial direction of the body, specifically, a movable hole is arranged in the rear end of the body, the movable block is arranged in the movable hole, a shoulder is arranged at the side part of the front end of the movable block, a limiting disc which can be matched with the shoulder of the movable block through a fastener so as to prevent the movable block from falling out of the movable hole when moving backwards is fixed at the orifice of the movable hole in the rear end of the body, a plurality of obliquely arranged wedging grooves are correspondingly arranged at the edge of the movable block, and a wedging block is arranged on each jaw, when the movable block moves back and forth, the wedge block can be pushed by the groove wall of the wedge groove to enable the jaws to move, the mode that the movable block drives each jaw to move can refer to a composite power chuck disclosed in patent application No. 201921303831.0, the other end of the shaft body is connected with a hollow rotary cylinder (also can be a hollow rotary oil cylinder), the front end of the pull rod is in threaded connection with the movable block of the hollow chuck, and the rear end of the pull rod is in threaded connection with a piston of the hollow rotary cylinder, so that when the piston of the hollow rotary cylinder moves back and forth, the movable block can be driven by the pull rod to move back and forth to drive each jaw to clamp or loosen a workpiece.
However, in the actual use process, when the processed objects are different, different hollow chucks are often needed, the sizes of the hollow chucks are different, especially the inner holes of the movable blocks in the hollow chucks are different, and therefore, the pull rods need to be replaced to match the hollow chucks needing to be used. However, since the rear end of the pull rod is in threaded connection with the piston of the hollow rotary cylinder, the hollow rotary cylinder must be removed when the pull rod is replaced, and the hollow rotary cylinder needs to be replaced correspondingly, so that the operation is very inconvenient and the switching efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem that prior art exists, provide a lathe electricity main shaft, solved the inconvenient problem of operation when connecting different specification cavity chucks.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides an electric spindle of machine tool, includes that headstock, both ends stretch out the outer axis body of headstock and wear to locate the pull rod in the axis body, the axis body rear end be connected with cavity revolving cylinder and pull rod rear end and cavity revolving cylinder's piston is connected, the front end of axis body is connected with the cavity chuck, be equipped with the movable block that can follow its axial displacement and drive each jack catch synchronization action of cavity chuck in the cavity chuck, a serial communication port, movable block female connection have the switching piece, be provided with the mating holes that sets up with the same central line of movable block on the switching piece, the front end threaded connection of pull rod is in the mating holes, still be equipped with along its axial in the switching piece and run through switching piece rear end face and have the internal screw thread connecting hole.
The switching block is in threaded connection with the movable block, the matching hole in the switching block is in threaded connection with the front end of the pull rod, namely the switching block can be detached independently, so that when the specifications of the hollow chucks to be used are different, the matching of the same pull rod and the hollow chucks of different specifications can be realized only by replacing the switching block, the pull rod does not need to be replaced, the operation is more convenient for workers during operation, and the switching efficiency of the electric spindle of the machine tool during the use of the hollow chucks of different specifications is greatly improved. The adapter block is to be installed in the movable block of cavity chuck earlier before with pull rod front end threaded connection, because the mating holes of adapter block will with pull rod front end threaded connection and can't set to interior hexagonal hole, consequently through running through adapter block rear end face and have the internal screw thread connecting hole along its axial setting in the adapter block, make the staff can use the bolt to pull the adapter block as the handle behind connecting hole threaded connection bolt again, so the adapter block will follow the screw thread and automatically get into in the movable block, the convenience of installation has been guaranteed.
In the electric spindle of the machine tool, the connecting hole is positioned close to the outer peripheral surface of the adapter block.
Through the arrangement, the position of the bolt is far away from the central line of the switching block after the bolt is connected in the connecting hole, so that a worker can pull the switching block through the bolt easily and conveniently.
In the electric spindle of the machine tool, the outer diameter of the front end of the transfer block is smaller than the outer diameter of the rear end of the transfer block, the rear end of the transfer block is in threaded connection with the rear end of the movable block, the outer peripheral surface of the front end of the transfer block is a smooth surface, and the outer diameter of the transfer block is matched with the inner hole of the front end of the movable block.
Through the arrangement, the coaxiality between the transfer block and the movable block can be ensured, and the coaxiality after the integral connection is ensured so as to ensure the processing precision.
In the electric spindle of the machine tool, the pull rod is hollow.
The hollow rotary cylinder and the pull rod are hollow and the hollow chuck is used, so that an integral hollow structure is formed, and therefore, some bar parts can be directly conveyed to the hollow chuck from the hollow rotary cylinder to be clamped and processed without frequently opening and closing a protective door of a machine tool, and the convenience of clamping is improved.
In the machine tool electric spindle, an annular retaining shoulder is arranged in the front end port of the adapter block, and the aperture of the central hole of the annular retaining shoulder is the same as that of the inner hole of the pull rod.
The annular blocking shoulder can limit the connection depth between the pull rod and the switching block, so that the condition that the whole is too short due to too long connection between the pull rod and the switching block is avoided, and the reliability of the structure is ensured.
Compared with the prior art, the electric spindle of the machine tool is used through the switching block, so that when the specifications of hollow chucks required to be used are different, the matching of the same pull rod and the hollow chucks of different specifications can be realized only by replacing the switching block, the pull rod does not need to be replaced, and the switching efficiency of the electric spindle of the machine tool when the hollow chucks of different specifications are required to be used is greatly improved.
Drawings
Fig. 1 is a sectional view of an electric spindle of the machine tool.
In the figure, 1, a main spindle box; 2. a shaft body; 3. a pull rod; 4. a hollow rotary cylinder; 4a, a piston; 5. a mounting seat; 6. a hollow chuck; 6a, a movable block; 7. a transfer block; 7a, a matching hole; 7b, connecting holes; 7c, an annular shoulder.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1, an electric spindle of a machine tool comprises a spindle box 1, a shaft body 2 with two ends extending out of the spindle box 1, and a pull rod 3 penetrating through the shaft body 2, wherein the rear end of the shaft body 2 is connected with a hollow rotary cylinder 4, the rear end of the pull rod 3 is in threaded connection with a piston 4a of the hollow rotary cylinder 4, a mounting seat 5 is specifically fixed at the rear end of the shaft body 2, and a cylinder body of the hollow rotary cylinder 4 is fixed on the mounting seat 5. The front end of axis body 2 is connected with hollow chuck 6, specifically adopts six-jaw chuck in this embodiment, is equipped with in the hollow chuck 6 to follow its axial displacement and drive each jack catch synchronization action's of hollow chuck 6 movable block 6a, and the concrete structure of hollow chuck 6 is prior art, and the no longer repeated here, the front end of pull rod 3 is connected with movable block 6 a. The pull rod 3 is hollow, and the hollow rotary cylinder 4 and the pull rod 3 are hollow and the hollow chuck 6, so that an integral hollow structure is formed, and the hollow rotary cylinder 4 can be directly conveyed to the hollow chuck 6 for clamping processing of some bar parts, so that the protective door of a machine tool does not need to be opened and closed frequently, and the convenience of clamping is improved.
Further, as shown in fig. 1, a transfer block 7 is connected to the movable block 6a through a female screw, a fitting hole 7a is formed in the transfer block 7 and is concentric with the movable block 6a, the front end of the pull rod 3 is screwed into the fitting hole 7a, and a connecting hole 7b having a female screw and penetrating through the rear end face of the transfer block 7 is formed in the transfer block 7 along the axial direction. The switching block 7 is in threaded connection with the movable block 6a, the matching hole 7a in the switching block 7 is in threaded connection with the front end of the pull rod 3, namely the switching block 7 can be detached independently, so that when the specifications of the hollow chucks 6 required to be used are different, the matching of the same pull rod 3 and the hollow chucks 6 of different specifications can be realized only by replacing the switching block 7, therefore, the pull rod 3 does not need to be replaced, and the switching efficiency of the electric spindle of the machine tool when the hollow chucks 6 of different specifications are required to be used is greatly improved. The adapter block 7 is installed in the movable block 6a of the hollow chuck 6 before being in threaded connection with the front end of the pull rod 3, and the matching hole 7a of the adapter block 7 is in threaded connection with the front end of the pull rod 3 and cannot be arranged to be a hexagon socket hole, so that a connecting hole 7b which penetrates through the rear end face of the adapter block 7 and is provided with an internal thread is formed in the adapter block 7 along the axial direction of the adapter block, a worker can pull the adapter block 7 by taking a bolt as a handle after the bolt is connected with the internal thread of the connecting hole 7b through the connecting hole, the adapter block 7 can automatically enter the movable block 6a along the thread, and installation convenience is guaranteed.
Further, as shown in fig. 1, the connecting hole 7b is located near the outer peripheral surface of the rotation block 7, and after the bolt is connected in the connecting hole 7b, the position of the bolt is far from the center line of the rotation block 7, so that a worker can easily and conveniently pull the rotation block 7 through the bolt. The front end external diameter of switching piece 7 is less than the rear end external diameter of switching piece 7, and switching piece 7 rear end threaded connection is in the rear end of movable block 6a, and the front end outer peripheral face of switching piece 7 is smooth face and its external diameter cooperatees with the front end hole of movable block 6a, through the aforesaid setting, can guarantee the axiality between switching piece 7 and the movable block 6a, guarantees the axiality after the integral connection in order to guarantee the machining precision. An annular retaining shoulder 7c is arranged in the front end opening of the transfer block 7, and the aperture of the central hole of the annular retaining shoulder 7c is the same as that of the inner hole of the pull rod 3.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a lathe electricity main shaft, includes main shaft box (1), both ends stretch out the axis body (2) outside main shaft box (1) and wear to locate pull rod (3) in axis body (2), axis body (2) rear end be connected with cavity revolving cylinder (4) and pull rod (3) rear end and be connected with piston (4a) of cavity revolving cylinder (4), the front end of axis body (2) is connected with cavity chuck (6), be equipped with in cavity chuck (6) and follow each jack catch synchronization action's of its axial displacement and drive cavity chuck (6) movable block (6a), a serial communication port, movable block (6a) female connection have a switching piece (7), be provided with mating holes (7a) that set up with movable block (6a) concentric line on switching piece (7), the front end threaded connection of pull rod (3) is in mating holes (7a), still be equipped with in switching piece (7) along its axial and run through switching piece (7) rear end face and have female screw connecting hole (7) b) In that respect
2. Electric spindle for machine tools according to claim 1, characterized in that said connection hole (7b) is located close to the outer peripheral surface of the adapter block (7).
3. The electric spindle of the machine tool according to claim 1 or 2, characterized in that the outer diameter of the front end of the adapter block (7) is smaller than the outer diameter of the rear end of the adapter block (7), the rear end of the adapter block (7) is screwed into the rear end of the movable block (6a), the outer peripheral surface of the front end of the adapter block (7) is a smooth surface, and the outer diameter of the adapter block is matched with the inner hole of the front end of the movable block (6 a).
4. Machine tool electric spindle according to claim 3, characterized in that the tie-rod (3) is hollow.
5. A machine tool electric spindle according to claim 4, characterized in that an annular shoulder (7c) is arranged in the front end of the adapter block (7), and the diameter of the central hole of the annular shoulder (7c) is the same as that of the inner hole of the pull rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180396.2U CN217315896U (en) | 2022-01-21 | 2022-01-21 | Electric spindle of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180396.2U CN217315896U (en) | 2022-01-21 | 2022-01-21 | Electric spindle of machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN217315896U true CN217315896U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220180396.2U Active CN217315896U (en) | 2022-01-21 | 2022-01-21 | Electric spindle of machine tool |
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| CN (1) | CN217315896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798714A (en) * | 2024-02-19 | 2024-04-02 | 东莞市成泰伺服技术有限公司 | Multifunctional mechanical processing power mechanism |
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2022
- 2022-01-21 CN CN202220180396.2U patent/CN217315896U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798714A (en) * | 2024-02-19 | 2024-04-02 | 东莞市成泰伺服技术有限公司 | Multifunctional mechanical processing power mechanism |
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