Integrated transmission shaft of automatic tool changing mechanism

Abstract

The utility model is applicable to the technical field of tool changing systems of machining centers, and provides an integrated transmission shaft of an automatic tool changing mechanism, which comprises a main transmission shaft, the main transmission shaft is rotatably mounted in a support shell, the support shell is slidably mounted in a casing through two guide rails, and a pneumatic push rod is mounted outside the casing. The pneumatic push rod is fixedly connected with the supporting shell in a telescopic mode and drives the supporting shell to move on the guide rail, then the main transmission shaft is driven to stretch and retract, the tool handles are pulled out through the tool changing arm, the driving motor in transmission connection with the main transmission shaft is installed in the supporting shell, then the main transmission shaft is driven to rotate, and therefore the tool changing arm is used for exchanging the two tool handles. The operation is convenient, and the maintenance is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool changing systems for machining centers, and in particular relates to an integrated transmission shaft of an automatic tool changing mechanism. Background Art

[0002] In the current field of tool changing systems for machining centers, an automatic tool changing system refers to a machining device that enables continuous tool changes between parts processing steps. An automatic tool changing system consists of a tool magazine and a tool changing device. The three most widely used automatic tool changing systems are turret-type tool changing systems, direct spindle tool changing systems with a disc magazine, and tool changing robots with a chain magazine. Direct spindle tool changing systems with a disc magazine require a drive shaft to extend and rotate before changing the tool.

[0003] The utility model patent with authorization announcement number CN203495647U discloses an automatic tool changing mechanism, comprising a housing and a driving motor fixed above the housing, the output shaft of the driving motor extending into the housing and having a small bevel gear at the end thereof; and a large bevel gear arranged in the housing through a pivot and meshing with the small bevel gear, the pivot being fixed with a transmission plate, the transmission plate being convexly provided with a transmission protrusion, the housing being further provided with a linkage rod, the housing being provided with a shaft sleeve on the side of the large bevel gear, the inner circumferential surface of the shaft sleeve being provided with a spline groove; and a tool changing shaft, the rear outer surface of the tool changing shaft being provided with a spline inserted into the spline groove, and the housing being further provided with a rotating driving structure that drives the shaft sleeve to rotate; the automatic tool changing mechanism of the utility model has a simple structure, is easy to install, has high rotation accuracy, and can automatically and effectively change tools, thereby effectively reducing costs and improving processing efficiency.

[0004] However, the above patents have the following shortcomings:

[0005] In the above patent, a rotary drive structure is used to drive the tool changing shaft to move and change the tool. However, its rotary drive structure is relatively complex and occupies a large volume, which is not convenient for subsequent maintenance. At the same time, there is no limiting structure on the tool changing shaft, which cannot limit its rotation angle. When rotating, the angle is too large or too small, which affects the installation accuracy of the tool handle. Utility Model Content

[0006] The utility model provides an integrated transmission shaft for an automatic tool changing mechanism, aiming to solve the problems mentioned in the above background, such as the complicated rotation drive structure, the large volume occupied, and the inconvenience in subsequent maintenance; and the lack of a limiting structure in the tool changing shaft, which cannot limit its rotation angle, and the angle being too large or too small during rotation, affecting the installation accuracy of the tool handle.

[0007] The utility model is implemented as follows: an automatic tool changing mechanism integrated transmission shaft comprises a housing, wherein two guide rails are fixedly installed inside the housing;

[0008] A support assembly is installed in the housing, the support assembly includes a support shell, the support shell is slidably connected to the two guide rails, and a bearing seat 1 is embedded on the outer wall of the support shell;

[0009] A main transmission shaft, the main transmission shaft being rotatably mounted in the support housing and rotatably connected to the first bearing seat;

[0010] A transmission gear 1 is fixedly mounted on the outer wall of the main transmission shaft, and a drive motor is fixedly mounted in the support shell. A transmission gear 2 meshing with the transmission gear 1 is mounted on the telescopic end of the drive motor.

[0011] Preferably, a pneumatic push rod is fixedly mounted on the outer wall of the casing, and the telescopic end of the pneumatic push rod passes through the casing and is fixedly connected to the support shell; in this solution, the pneumatic push rod drives the support shell to move on the guide rail, thereby driving the main transmission shaft to move.

[0012] Preferably, a through hole is opened on the outer wall of the housing, and a driving shaft is fixedly mounted on the main transmission shaft;

[0013] After the driving shaft passes through the through hole, a tool changing arm is fixedly installed, and both ends of the tool changing arm are provided with tool clamping grooves; in this solution, the driving shaft slides in the through hole, and the two tool clamping grooves on the tool changing arm are used to clamp the tool handle.

[0014] Preferably, a second bearing seat is slidably connected to the two guide rails, and the drive shaft is rotatably connected to the second bearing seat; in this solution, the drive shaft is supported by the second bearing seat, and the second bearing seat slides on the guide rails.

[0015] Preferably, two stoppers are fixedly mounted on the outer wall of the main transmission shaft;

[0016] A fixed plate is installed on the top and bottom walls inside the casing, a plurality of shock-absorbing springs are installed on the side walls of the fixed plate, and a baffle is fixedly installed on the plurality of shock-absorbing springs; in this solution, the two baffles rotate with the main transmission shaft, the block contacts the baffle, and the baffle is used to limit the rotation angle of the main transmission shaft.

[0017] Preferably, an "n"-shaped flow channel is opened inside the housing, and the outlet of the flow channel faces the two guide rails;

[0018] The housing is provided with an oil inlet hole connected to the flow channel; in this solution, lubricating oil is injected through the oil inlet hole, and the lubricating oil flows out through the flow channel onto the two guide rails to lubricate the guide rails.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the present invention is an automatic tool changing mechanism integrated transmission shaft,

[0020] 1. The main transmission shaft is rotatably installed inside the support shell, and the support shell is slidably installed inside the casing through two guide rails. At the same time, a pneumatic push rod is installed outside the casing. The pneumatic push rod is telescopically fixedly connected to the support shell, driving the support shell to move on the guide rail, thereby driving the main transmission shaft to telescope, and the tool handle is pulled out through the tool changing arm. A drive motor connected to the main transmission shaft is installed in the support shell, thereby driving the main transmission shaft to rotate, so that the two tool handles can be swapped by using the tool changing arm. The structure is simple, the operation is convenient, and it is more convenient for maintenance.

[0021] 2. Two blocks are installed on the outer wall of the main transmission shaft. When the main transmission shaft rotates, the two blocks rotate and then contact the corresponding baffles. By squeezing the baffles, multiple shock-absorbing springs are squeezed. The baffles are used for positioning, which improves the installation accuracy of the tool handle. Multiple shock-absorbing springs can be used for vibration reduction, thereby extending the service life of the main transmission shaft.

[0022] 3. A flow channel is opened on the inner wall of the casing, and an oil inlet hole connected to the flow channel is opened on the casing to facilitate the injection of lubricating oil into the flow channel, so that the lubricating oil falls on the two guide rails to lubricate the guide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of this utility

[0024] Figure 2 Practical Figure 1 Enlarged view of point A in the middle

[0025] Figure 3 Schematic diagram of the structure of this practical case

[0026] In the picture:

[0027] 1. Main transmission shaft; 11. Drive shaft; 12. Stopper; 13. Transmission gear 1;

[0028] 2. Casing; 21. Guide rail; 22. Through hole; 23. Fixing plate; 231. Shock-absorbing spring; 232. Baffle; 24. Oil inlet hole; 241. Flow channel;

[0029] 3. Pneumatic push rod;

[0030] 4. Support assembly; 41. Support housing; 42. Bearing seat 1; 43. Bearing seat 2; 44. Drive motor; 441. Transmission gear 2;

[0031] 5. Tool changing arm; 51. Tool slot. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0034] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] See also Figure 1-3The utility model provides a technical solution: an integrated transmission shaft of an automatic tool changing mechanism, comprising a casing 2, two guide rails 21 fixedly installed inside the casing 2, a support assembly 4, which is installed in the casing 2, the support assembly 4 includes a support shell 41, the support shell 41 is slidably connected to the two guide rails 21, a bearing seat 42 is embedded on the outer wall of the support shell 41, a main transmission shaft 1, the main transmission shaft 1 is rotatably installed in the support shell 41, and the main transmission shaft 1 is rotatably connected to the bearing seat 42, a transmission gear 13 is fixedly installed on the outer wall of the main transmission shaft 1, and a driving motor 44 is fixedly installed in the support shell 41, a transmission gear 2 441 meshing with the transmission gear 13 is installed at the telescopic end of the driving motor 44, a pneumatic push rod 3 is fixedly installed on the outer wall of the casing 2, the telescopic end of the pneumatic push rod 3 passes through the casing 2 and is fixedly connected to the support shell 41, and a through hole 22 is opened on the outer wall of the casing 2.

[0038] Among them, the driving motor 44 drives the main transmission shaft 1 to rotate through gear transmission, thereby driving the driving shaft 11 to rotate and driving the knife handle to rotate. At the same time, the telescopic end of the pneumatic push rod 3 drives the support shell 41 to move horizontally on the guide rail 21, and then drives the main transmission shaft 1 to retract and retract, making it easier to pull out the knife handle.

[0039] A drive shaft 11 is fixedly installed on the main transmission shaft 1, and a tool changing arm 5 is fixedly installed after the drive shaft 11 passes through the through hole 22. Tool clamping grooves 51 are provided at both ends of the tool changing arm 5. Bearing seats 2 43 are slidably connected to the two guide rails 21, and the drive shaft 11 is rotatably connected to the bearing seat 2 43.

[0040] Among them, when the drive shaft 11 moves, the bearing seat 2 43 is used to support the drive shaft 11, and the tool changing arm 5 can have the same structure as the tool changing rod in the patent with publication number (CN203495647U), and its tool clamping groove 51 has the same function as the tool clamp on the tool changing rod to clamp the two tools.

[0041] Two blocks 12 are fixedly mounted on the outer wall of the main transmission shaft 1 , and fixing plates 23 are mounted on the top and bottom walls inside the casing 2 . Multiple shock-absorbing springs 231 are mounted on the side walls of the fixing plates 23 , and baffles 232 are fixedly mounted on the multiple shock-absorbing springs 231 .

[0042] Furthermore, when the main transmission shaft 1 rotates, the two blocks 12 are driven to rotate, and the two blocks 12 are used to squeeze the two baffles 232, thereby squeezing multiple shock-absorbing springs 231. The multiple shock-absorbing springs 231 are used to reduce the vibration of the baffles 232, thereby extending the service life of the main transmission shaft 1, and at the same time limiting the rotation angle of the main transmission shaft 1, thereby improving the rotation accuracy of the tool changing arm 5.

[0043] An “n”-shaped flow channel 241 is provided inside the housing 2 , and an outlet of the flow channel 241 faces the two guide rails 21 . An oil inlet hole 24 communicating with the flow channel 241 is provided on the housing 2 .

[0044] Specifically, lubricating oil is injected through the oil inlet 24 , and the outlet holes of the two flow channels 241 are both facing the guide rails 21 , so that the lubricating oil flows into the two guide rails 21 to lubricate the guide rails 21 and extend the service life of the guide rails 21 .

[0045] The working principle and use process of this utility model: please refer to Figure 1-3 The telescopic end of the pneumatic push rod 3 drives the support shell 41 to move horizontally on the guide rail 21, thereby driving the main transmission shaft 1 to extend and retract. When the drive shaft 11 moves, the bearing seat 43 is used to support the drive shaft 11, and the two knife slots 51 on the tool changing arm 5 are used to clamp the two knife arms to facilitate the removal of the knife handle. The driving motor 44 drives the main transmission shaft 1 to rotate through the gear transmission, thereby driving the drive shaft 11 to rotate and driving the knife handle to rotate. When the main transmission shaft 1 rotates, it drives the two blocks 12 to rotate, and uses the two blocks 12 to squeeze the two baffles 232, thereby squeezing multiple shock-absorbing springs 231, and using multiple shock-absorbing springs 231 to slow down the vibration of the baffle 232, thereby extending the service life of the main transmission shaft 1, and at the same time limiting the rotation angle of the main transmission shaft 1, and improving the rotation accuracy of the tool changing arm 5.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated transmission shaft for an automatic tool changing mechanism, characterized in that: It comprises a casing (2), wherein two guide rails (21) are fixedly installed inside the casing (2); A support assembly (4) is installed in the housing (2), the support assembly (4) includes a support shell (41), the support shell (41) is slidably connected to the two guide rails (21), and a bearing seat (42) is embedded on the outer wall of the support shell (41); A main transmission shaft (1), the main transmission shaft (1) being rotatably mounted in the support housing (41), and the main transmission shaft (1) being rotatably connected to the bearing seat 1 (42); A transmission gear 1 (13) is fixedly mounted on the outer wall of the main transmission shaft (1), and a drive motor (44) is fixedly mounted in the support housing (41). A transmission gear 2 (441) meshing with the transmission gear 1 (13) is mounted on the telescopic end of the drive motor (44).

2. The integrated transmission shaft of the automatic tool changing mechanism according to claim 1, characterized in that: A pneumatic push rod (3) is fixedly mounted on the outer wall of the casing (2), and the telescopic end of the pneumatic push rod (3) passes through the casing (2) and is fixedly connected to the supporting shell (41).

3. The integrated transmission shaft of the automatic tool changing mechanism according to claim 1, characterized in that: A through hole (22) is provided on the outer wall of the casing (2), and a drive shaft (11) is fixedly mounted on the main transmission shaft (1); The drive shaft (11) passes through the through hole (22) and is then fixedly mounted with a tool-changing arm (5), with both ends of the tool-changing arm (5) being provided with tool-clamping grooves (51).

4. The integrated transmission shaft of the automatic tool changing mechanism according to claim 3, characterized in that: A second bearing seat (43) is slidably connected to the two guide rails (21), and the drive shaft (11) is rotatably connected to the second bearing seat (43).

5. The integrated transmission shaft of the automatic tool changing mechanism according to claim 3, characterized in that: Two stoppers (12) are fixedly mounted on the outer wall of the main transmission shaft (1); A fixing plate (23) is installed on the top wall and the bottom wall inside the housing (2), a plurality of shock-absorbing springs (231) are installed on the side walls of the fixing plate (23), and a baffle (232) is fixedly installed on the plurality of shock-absorbing springs (231).

6. The integrated transmission shaft of the automatic tool changing mechanism according to claim 1, characterized in that: An "n"-shaped flow channel (241) is provided inside the housing (2), and an outlet of the flow channel (241) faces the two guide rails (21); The casing (2) is provided with an oil inlet hole (24) communicating with the flow channel (241).

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