Turret spindle switching mechanism

Abstract

The utility model provides a turret main shaft switching mechanism, which solves the problem that a machine tool main shaft is inconvenient to switch and the like, and comprises a switching cylinder, a switching groove which is symmetrical relative to the central axis of the switching cylinder is arranged at the end of the switching cylinder, the bottom of the switching groove is in a slope shape, a spline assembly is arranged at the other end of the switching cylinder, and an electric push rod is arranged in the switching cylinder. A linkage locking assembly is arranged between the electric push rod and the circumferential outer side of the transfer cylinder. The utility model has the advantages of low assembly difficulty, stable structure and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool processing, and particularly relates to a turret spindle adapter mechanism. Background Art

[0002] The machine tool spindle refers to the shaft that drives the workpiece or tool to rotate on the machine tool. Usually, the spindle assembly is composed of a spindle, bearings, transmission parts, etc. In a machine, it is mainly used to support transmission parts such as gears and belt pulleys, and transmit motion and torque, such as the machine tool spindle; some are used to clamp workpieces, such as arbors. In the actual use process, the existing machine tool spindles need to bear a large torque, and the conventional adapter structures cannot guarantee the local structural strength. In addition, the machine tool spindles are usually assembled manually, requiring a large number of locking parts, and the assembly is rather cumbersome and difficult.

[0003] In order to solve the deficiencies of the existing technology, people have carried out long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a spindle structure for drilling and tapping on a turret turntable [201420239091.X], which includes a spindle and a bearing seat. The bearing seat is a stepped cylinder. A radial bearing is installed between the rear part of the spindle and the bearing seat. The front end face of the radial bearing is adjacent to a snap ring, and the snap ring is fixed on the bearing seat. A thrust bearing and an adjusting nut are successively installed at the rear part of the spindle. The thrust bearing is close to the radial bearing. Two axial threaded holes are provided on both sides of the end face of the adjusting nut. Two adjusting bolts are screwed into the two axial threaded holes and abutted against the thrust bearing; a gear is fixed on the spindle in front of the snap ring, and a spacer sleeve is also sleeved on the spindle between the gear and the front end face of the radial bearing. The spacer sleeve passes through the snap ring. An end cover is sleeved on the spindle in front of the gear. A plurality of locking bolts lock the end cover and the bearing seat on the turret turntable. A notch is opened on the bearing seat so that a part of the gear can extend out of the bearing seat, and a tool holder is installed at the front end of the spindle.

[0004] The above solution solves the problem of the spindle structural strength to a certain extent, but there are still many deficiencies in this solution, such as the relatively cumbersome adapter assembly and the large installation difficulty. Summary of the Invention

[0005] The purpose of the utility model is to provide a turret spindle adapter mechanism with reasonable design and convenient assembly for the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions: A turret spindle adapter mechanism includes an adapter cylinder. Adapter grooves that are symmetric about its central axis are provided at the end of the adapter cylinder. The bottom of the adapter groove is in an inclined shape. A spline assembly is provided at the other end of the adapter cylinder. An electric push rod is installed inside the adapter cylinder, and a linkage locking assembly is provided between the electric push rod and the outer circumference of the adapter cylinder.

[0007] In the above-mentioned turret spindle conversion mechanism, the conversion cylinder includes a front cylinder and a rear cylinder, the rear cylinder has a mounting cylinder inserted into the front cylinder and fits with the inner wall thereof, an mounting cavity for assembling an electric push rod is reserved between the front cylinder and the rear cylinder, and a fixing component is arranged between the front cylinder and the rear cylinder.

[0008] In the above-mentioned turret spindle conversion mechanism, the fixing assembly includes a fixing groove and a fixing strip arranged between the outer side of the mounting cylinder and the inner wall of the front cylinder body. The fixing groove and the fixing strip are slidably plugged and arranged in a centrally symmetrical manner. A one-to-one corresponding fixing hole is opened between the mounting cylinder and the front cylinder body, and a threaded part is installed in the fixing hole.

[0009] In the above-mentioned turret spindle adapter mechanism, the spline assembly includes a keyway arranged on the outside of the adapter tube, and the port of the adapter tube is provided with limiting ribs arranged in a centrally symmetrical manner.

[0010] In the above-mentioned turret spindle adapter mechanism, the linkage locking assembly includes a pushing block arranged at the end of the electric push rod, the pushing block has a plurality of pushing surfaces arranged in a central symmetrical manner, the adapter tube is provided with pushing grooves corresponding to the pushing surfaces one by one, a locking block is slidably installed in the pushing groove, the inner side of the locking block is in contact with the pushing surface, and an elastic reset member is arranged between the locking block and the pushing groove.

[0011] In the above-mentioned turret spindle adapter mechanism, the outer side of the locking block has a stop surface extending along the radial direction of the adapter tube, and the locking block has an arc-shaped guide surface adjacent to the stop surface.

[0012] In the above-mentioned turret spindle conversion mechanism, a plug-in rod is fixed at the end of the electric push rod, the plug-in rod is slidably connected to the conversion tube and a pressure plate is fixed at the end.

[0013] In the above-mentioned turret spindle adapter mechanism, a limited step surface is provided on the outer side of the adapter tube.

[0014] In the above-mentioned turret spindle adapter mechanism, a circumferentially surrounding support platform is provided on the outside of the adapter cylinder, and circumferentially distributed linkage teeth are arranged on both sides of the support platform.

[0015] In the above-mentioned turret spindle adapter mechanism, an indicator mark is arranged on the outside of the adapter tube.

[0016] Compared with the existing technology, the advantages of the utility model are: the adapter tube adopts a spline assembly and a linkage locking assembly for quick adapter, and the main shaft assembly can be achieved without additional locking parts; the linkage locking assembly adopts an electric push rod to control its locking state, and its response is relatively sensitive, which facilitates the rapid switching of transmission parts, and the clamp can be replaced as needed; a support platform with linkage teeth is provided on the outside of the adapter tube, which can further improve its adapter stability and ensure stable torque transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a structural sectional view of the present utility model;

[0019] Figure 3 is a partial sectional view of the present utility model;

[0020] Figure 4 is a structural sectional view of the present utility model;

[0021] In the figure, there are a transfer cylinder 1, a front cylinder body 11, a rear cylinder body 12, an installation cylinder 13, an installation cavity 14, a transfer groove 2, a spline assembly 3, a keyway 31, a limiting rib 32, an electric push rod 4, a plugging rod 41, a pressing disc 42, a linkage locking assembly 5, a pushing block 51, a pushing surface 52, a pushing groove 53, a locking block 54, a stopping surface 55, a guiding surface 56, a fixing assembly 6, a fixing groove 61, a fixing strip 62, a fixing hole 63, a limiting step surface 7, a support platform 8, a linkage tooth 81, and an indicating mark 9. Specific Embodiment

[0022] The following further elaborates on the present utility model in detail in conjunction with the accompanying drawings and specific embodiments.

[0023] As Figures 1-4 shown, a tool turret spindle transfer mechanism includes a transfer cylinder 1 at the internal center; in order to achieve circumferential positioning, transfer grooves 2 symmetrical to the central axis are provided at the end of the transfer cylinder 1, and the bottom of the transfer groove 2 is beveled to facilitate further locking and fixing with the transfer member. At the other end of the transfer cylinder 1, a spline assembly 3 is provided for circumferential and axial limiting, and an electric push rod 4 is installed inside the transfer cylinder 1, and a linkage locking assembly 5 is arranged between the electric push rod 4 and the circumferential outer side of the transfer cylinder 1. The electric push rod 4 provides a driving torque for the linkage locking assembly 5, and the linkage locking assembly 5 provides a limiting structure, thereby realizing multi-point fixing of the transfer cylinder 1.

[0024] Specifically, the transfer cylinder 1 adopts a separable structure, specifically including a front cylinder body 11 and a rear cylinder body 12. The rear cylinder body 12 has an installation cylinder 13 inserted into the front cylinder body 11 and fitting with its inner wall, and this nested structure facilitates the assembly and fixing of the electric push rod 4. An installation cavity 14 for assembling the electric push rod 4 is left between the front cylinder body 11 and the rear cylinder body 12, and a fixing assembly 6 is arranged between the front cylinder body 11 and the rear cylinder body 12 to realize its circumferential and axial limiting.

[0025] In depth, the fixing component 6 includes a fixing groove 61 and a fixing strip 62 arranged between the outer side of the mounting cylinder 13 and the inner wall of the front cylinder 11. The fixing groove 61 and the fixing strip 62 are slidably inserted and arranged in central symmetry. Fixing holes 63 corresponding to each other are formed between the mounting cylinder 13 and the front cylinder 11, and threaded members are installed in the fixing holes 63. When the fixing groove 61 and the fixing strip 62 are slidably inserted, the fixing holes 63 also coincide with each other.

[0026] Furthermore, similar to the conventional spline structure, the spline component 3 in this application includes a key groove 31 arranged on the outer side of the adapter cylinder 1, and limiting ribs 32 arranged in central symmetry are provided inside the port of the adapter cylinder 1. The inner limiting ribs 32 are usually meshed with the transmission gear to ensure that the meshing surfaces are fully fitted. At the same time, the limiting ribs 32 improve the local structural strength of the adapter cylinder 1.

[0027] Even further, the linkage locking component 5 includes a pushing block 51 arranged at the end of the electric push rod 4. The pushing block 51 has a number of pushing surfaces 52 arranged in central symmetry. Pushing grooves 53 corresponding to the pushing surfaces 52 are formed on the adapter cylinder 1. A locking block 54 is slidably installed in the pushing grooves 53. The inner side of the locking block 54 is in contact with the pushing surfaces 52, and an elastic resetting member is arranged between the locking block 54 and the pushing grooves 53. A pushing torque is applied to the locking block 54 by the pushing block 51, and the locking block 54 then translates radially along the adapter cylinder 1, and the locking block 54 is ejected from the pushing grooves 53.

[0028] In addition, the outer side of the locking block 54 has a stopping surface 55 extending radially along the adapter cylinder 1, and the locking block 54 has a guiding surface 56 that is arc-shaped and adjacent to the stopping surface 55. When the linkage locking component 5 is unlocked, the guiding surface 56 ensures that the locking block 54 does not affect the separation of the adapter cylinder 1.

[0029] At the same time, a plugging rod 41 is fixed at the end of the electric push rod 4. The plugging rod 41 is slidably connected to the adapter cylinder 1 and a pressing disk 42 is fixed at the end. The pressing disk 42 is provided with a pushing torque by the electric push rod 4 and cooperates with the linkage locking component 5 to provide a reverse pressing force to the adapter cylinder 1, so as to ensure the structural stability during the transmission process.

[0030] Visibly, a limiting step surface 7 is arranged on the outer side of the adapter cylinder 1. When the adapter cylinder 1 is plugged and fixed, the limiting step surface 7 provides a limiting torque and at the same time facilitates the plugging and fixing of the pin shaft.

[0031] Obviously, a supporting platform 8 is arranged on the outer side of the adapter cylinder 1 in a circumferential surrounding manner. Linkage teeth 81 are arranged on both sides of the supporting platform 8 in a circumferential distribution. The linkage teeth 81 are symmetric with respect to the supporting platform 8 and are respectively meshed with the transmission teeth opposite to both ends of the adapter cylinder 1 to ensure the stable transmission of its torque.

[0032] Preferably, an indication mark 9 is arranged on the outer side of the adapter cylinder 1 to ensure the correct assembly direction.

[0033] To sum up, the principle of this embodiment is that the adapter tube 1 is transferred, locked and fixed by the spline assembly 3 and the linkage locking assembly 5, wherein the electric push rod 4 provides a driving torque for the linkage locking assembly 5, and the locking block 54 in the linkage locking assembly 5 is pushed out to achieve rapid circumferential and axial fixation.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although this article uses more terms such as adapter cylinder 1, front cylinder 11, rear cylinder 12, installation cylinder 13, installation cavity 14, adapter groove 2, spline assembly 3, key groove 31, limiting rib 32, electric push rod 4, plug rod 41, top pressure plate 42, linkage locking assembly 5, push block 51, push surface 52, push groove 53, locking block 54, stop surface 55, guide surface 56, fixing assembly 6, fixing groove 61, fixing bar 62, fixing hole 63, limiting step surface 7, support platform 8, linkage tooth 81, indicator mark 9, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A tool turret spindle adapter mechanism, including an adapter cylinder (1), characterized in that At the end of the adapter sleeve (1), there are adapter slots (2) symmetrically arranged relative to its central axis. The bottom of the adapter slot (2) is beveled. At the other end of the adapter sleeve (1), there is a spline assembly (3). An electric push rod (4) is installed inside the adapter sleeve (1), and a linkage locking assembly (5) is arranged between the electric push rod (4) and the outer circumference of the adapter sleeve (1).

2. The turret spindle adapter mechanism according to claim 1, characterized in that, The adapter sleeve (1) includes a front cylinder body (11) and a rear cylinder body (12). The rear cylinder body (12) has an installation cylinder (13) inserted into the front cylinder body (11) and fitting with its inner wall. An installation cavity (14) for assembling the electric push rod (4) is left between the front cylinder body (11) and the rear cylinder body (12). A fixing assembly (6) is arranged between the front cylinder body (11) and the rear cylinder body (12).

3. The turret spindle adapter mechanism according to claim 2, characterized in that, The fixing assembly (6) includes a fixing groove (61) and a fixing strip (62) arranged between the outer side of the installation cylinder (13) and the inner wall of the front cylinder body (11). The fixing groove (61) and the fixing strip (62) are slidably inserted and arranged in central symmetry. Corresponding fixing holes (63) are opened between the installation cylinder (13) and the front cylinder body (11), and threaded parts are installed in the fixing holes (63).

4. A turret spindle adapter mechanism according to claim 1, characterized in that, The spline assembly (3) includes a key groove (31) arranged on the outer side of the adapter sleeve (1), and limiting ribs (32) arranged in central symmetry are arranged inside the port of the adapter sleeve (1).

5. A turret spindle adapter mechanism according to claim 1, characterized in that, The linkage locking assembly (5) includes a pushing block (51) arranged at the end of the electric push rod (4). The pushing block (51) has a number of pushing surfaces (52) arranged in central symmetry. Pushing grooves (53) corresponding to the pushing surfaces (52) are opened on the adapter sleeve (1). A locking block (54) is slidably installed in the pushing groove (53). The inner side of the locking block (54) is in contact with the pushing surface (52), and an elastic resetting member is arranged between the locking block (54) and the pushing groove (53).

6. The turret spindle adapter mechanism according to claim 5, characterized in that, The outer side of the locking block (54) has a stopping surface (55) extending along the radial direction of the adapter sleeve (1). The locking block (54) has a guiding surface (56) that is arc-shaped and adjacent to the stopping surface (55).

7. A turret spindle adapter mechanism according to claim 5, characterized in that, A plugging rod (41) is fixed at the end of the electric push rod (4). The plugging rod (41) is slidably connected with the adapter sleeve (1), and a pressing disc (42) is fixed at its end.

8. A turret spindle adapter mechanism according to claim 1, characterized in that, A limiting step surface (7) is arranged on the outer side of the adapter sleeve (1).

9. The turret spindle adapter mechanism according to claim 1, characterized in that, A circumferentially surrounding support platform (8) is arranged on the outer side of the adapter sleeve (1). Linkage teeth (81) are arranged on both sides of the support platform (8) in a circumferential distribution.

10. A turret spindle adapter mechanism according to claim 1, characterized in that, An indication mark (9) is arranged on the outer side of the adapter sleeve (1).

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