Adjustable driven shaft processing numerical control lathe

Abstract

The application discloses a regulating driven shaft processing numerical control lathe, and relates to the field of numerical control lathes, which comprises a lathe, a moving seat, a regulating seat, a moving box, a regulating assembly, a locking assembly, a worm, a worm wheel, a transmission shaft, a transmission gear, an inner threaded cylinder, an outer threaded cylinder, a moving ring, a fixing ring and a pre-tightening spring are arranged, so that the compression amount of the pre-tightening spring can be adjusted before the regulating installation cylinder, the compression amount of the pre-tightening spring driven by the fixing ring during the movement of the installation cylinder is limited, the maximum movement distance of the installation cylinder is limited, the extrusion strength of the metal rod driven by the tailstock of the installation cylinder is limited, the extrusion strength is ensured to be appropriate, a T-shaped block, a first rotating rod, a second rotating rod, a transmission rod compression spring and a locking block are arranged, the moving seat is conveniently locked and unlocked, and the first rotating rod and the second rotating rod can be rotated to a vertical state under the action of the compression spring reset, the dead point of the connecting rod is realized, and the locking stability is ensured.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, and in particular to an adjustable driven shaft machining CNC lathe. Background Technology

[0002] A driven shaft is a shaft that is driven in a mechanical transmission system. It is usually connected to the driving shaft through transmission elements such as gears, belts, and chains to realize the transmission of power and motion. In mechanical design, driven shafts are usually used to convert the power of the driving shaft into the required motion form. The machining of driven shafts requires the use of CNC lathes to process metal bars into driven shafts of a specified diameter and shape.

[0003] When machining a driven shaft using a CNC machine tool, the unmachined metal rod needs to be installed in the fixture on the machine tool. The rotation of the fixture drives the metal rod to rotate, and then the cutting tool cuts the metal rod. During the installation process, the end of the metal rod away from the fixture needs to be fixed by the tailstock driving the center to squeeze and fix the end of the metal rod away from the fixture. This fixes both ends of the metal rod, ensuring that the metal rod remains horizontal and stable, and ensuring machining accuracy.

[0004] When existing CNC machine tools use the tailstock to drive the center to press and fix the metal bar, the tailstock is moved directly by manual adjustment to drive the center to press and fix the metal bar. However, this fixing method cannot adjust the clamping force of the center, making it impossible to keep the clamping force within a suitable range. If the clamping force is too small, the workpiece will become loose and slip. If the clamping force is too large, long shaft-type workpieces will be bent, resulting in taper after processing, which affects the processing accuracy and is inconvenient to use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides an adjustable driven shaft machining CNC lathe.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable driven shaft machining CNC lathe, including a lathe, a movable seat is slidably arranged inside the lathe, an adjusting seat is arranged on the top of the movable seat, a movable box is arranged on the top of the adjusting seat, an adjusting component is arranged inside the movable box, and a locking component is arranged inside the movable seat;

[0009] The adjustment assembly includes a threaded rod movably installed inside a movable box. One end of the threaded rod is engaged with a mounting cylinder on its outer surface. A fixed ring is installed on the outer surface of the mounting cylinder. A movable ring is provided on the side of the fixed ring away from the threaded rod. A preload spring is installed between the fixed ring and the movable ring. An external threaded cylinder is fixedly installed on the side of the fixed ring away from the movable ring. An internal threaded cylinder is engaged with the outer surface of the end of the external threaded cylinder away from the preload spring.

[0010] The locking assembly includes two T-shaped blocks disposed inside the movable seat. A compression spring is fixedly installed between the top of each T-shaped block and the top of the inner cavity of the movable seat. A transmission rod is hinged to both ends of the horizontal portion of each T-shaped block. A first rotating rod is provided on both sides of each T-shaped block. The bottom end of the first rotating rod is hinged to the end of the transmission rod away from the T-shaped block. A second rotating rod is also hinged to the bottom end of the first rotating rod. A locking block is provided at the bottom end of the second rotating rod and the bottom end of the T-shaped block.

[0011] In a preferred embodiment of the adjustable driven shaft machining CNC lathe described in this utility model, a drive shaft is movably connected inside the movable box, a drive gear is fixedly installed on the outer surface of the drive shaft, teeth are provided on the outer surface of the internal threaded cylinder, and the internal threaded cylinder is meshed with the drive gear through the teeth on its outer surface. Worm gears are fixedly installed on the outer surface of the drive shaft and the outer surface of the threaded rod away from the mounting cylinder. A worm is movably connected inside the movable box, and the worm is meshed with the worm gear.

[0012] As a preferred embodiment of the adjustable driven shaft machining CNC lathe described in this utility model, the end of the movable box away from the threaded rod is provided with a circular hole for the movement of the mounting cylinder. The inner wall of the circular hole at one end of the movable box and the outer surface of the fixing ring are both provided with limit protrusions. The outer surface of the mounting cylinder and the inner wall of the inner cavity of the movable box are both provided with grooves that cooperate with the limit protrusions.

[0013] In a preferred embodiment of the adjustable driven shaft machining CNC lathe described in this utility model, the mounting cylinder has a threaded hole at one end near the threaded rod, and the mounting cylinder is engaged with the threaded rod through the threaded hole. The mounting cylinder also has an insertion hole at one end away from the threaded rod.

[0014] In a preferred embodiment of the adjustable driven shaft machining CNC lathe described in this utility model, the top end of the first rotating rod is hinged to the top of the inner cavity of the moving box, and the bottom end of the second rotating rod is hinged to a fixing rod. The bottom end of the fixing rod and the bottom of the T-block are both fixedly connected to the top of the adjacent locking block.

[0015] As a preferred embodiment of the adjustable driven shaft machining CNC lathe described in this utility model, the bottom of the lathe's inner cavity is provided with a toothed groove, the lower surface of the locking block is provided with an anti-slip groove that mates with the toothed groove, the bottom of the movable seat is provided with a groove that mates with the locking block, limit rods are installed on the upper surfaces of the locking blocks located on both sides of the T-block, the top of the bottom groove of the movable seat is provided with a limit hole that mates with the limit rod, the top of the bottom groove of the movable seat is provided with an opening that communicates with the inner cavity of the movable box, and the fixing rod passes through the inside of the opening.

[0016] As a preferred embodiment of the adjustable driven shaft machining CNC lathe described in this utility model, the top of the T-block is equipped with two connecting rods, the top of the connecting rods passes through the interior of the compression spring and the upper surface of the moving seat and is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a U-shaped plate, and the bottom of the moving seat has a rectangular opening that cooperates with the U-shaped plate.

[0017] (III) Beneficial Effects

[0018] This utility model provides an adjustable driven shaft machining CNC lathe. It has the following advantages:

[0019] 1. By using a worm gear, worm wheel, drive shaft, drive gear, internal threaded cylinder, external threaded cylinder, moving ring, fixed ring, and preload spring, the compression of the preload spring can be adjusted before adjusting the mounting cylinder. This limits the compression of the preload spring by the fixed ring when the mounting cylinder moves, thereby limiting the maximum moving distance of the mounting cylinder and thus limiting the squeezing force of the mounting cylinder on the metal rod by the tip, ensuring that the squeezing force is appropriate.

[0020] 2. The T-block, first rotating rod, second rotating rod, transmission rod compression spring, and locking block are designed to facilitate the control of the locking block's ascent. The compression spring's resetting causes it to move downwards, thus facilitating the locking and unlocking of the moving seat. After the compression spring resets, the first and second rotating rods can rotate to a vertical position, achieving the dead point of the connecting rod and preventing the locking blocks on both sides from lifting, thereby ensuring a stable lock. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a structural schematic diagram of the mobile box of this utility model.

[0024] Figure 3 This is an exploded structural diagram of the adjustment component of this utility model.

[0025] Figure 4 This is a structural schematic diagram of the locking component of this utility model.

[0026] Figure 5 This is a structural schematic diagram of the T-shaped block of this utility model.

[0027] In the diagram, 1. Lathe; 2. Moving box; 3. Moving seat; 4. Adjusting seat; 5. Adjusting assembly; 501. Mounting cylinder; 502. Internal threaded cylinder; 503. External threaded cylinder; 504. Moving ring; 505. Preload spring; 506. Fixed ring; 507. Worm gear; 508. Worm wheel; 509. Threaded rod; 510. Transmission gear; 511. Transmission shaft; 6. Locking assembly; 601. U-shaped plate; 602. Connecting plate; 603. T-block; 604. Locking block; 605. First rotating rod; 606. Second rotating rod; 607. Limiting rod; 608. Fixed rod; 609. Transmission rod; 610. Compression spring; 611. Connecting rod. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 and Figure 3 This is the first embodiment of the present utility model. This embodiment provides an adjustable driven shaft machining CNC lathe 1, including a lathe 1, a movable seat 3 is slidably arranged inside the lathe 1, an adjusting seat 4 is arranged on the top of the movable seat 3, a movable box 2 is arranged on the top of the adjusting seat 4, an adjusting component 5 is arranged inside the movable box 2, and a locking component 6 is arranged inside the movable seat 3.

[0031] Adjustment component 5 includes a threaded rod 509 movably installed inside the movable box 2. One end of the threaded rod 509 is engaged with an installation cylinder 501. A fixing ring 506 is installed on the outer surface of the installation cylinder 501. A movable ring 504 is provided on the side of the fixing ring 506 away from the threaded rod 509. A preload spring 505 is installed between the fixing ring 506 and the movable ring 504. An external threaded cylinder 503 is fixedly installed on the side of the fixing ring 506 away from the movable ring 504. An internal threaded cylinder 502 is engaged with the outer surface of the end of the external threaded cylinder 503 away from the preload spring 505.

[0032] Specifically, a drive shaft 511 is movably connected inside the movable box 2. A drive gear 510 is fixedly installed on the outer surface of the drive shaft 511. The outer surface of the internal threaded cylinder 502 is provided with teeth. The internal threaded cylinder 502 is meshed with the drive gear 510 through the teeth on its outer surface. Worm gears 508 are fixedly installed on the outer surface of the drive shaft 511 and the outer surface of the threaded rod 509 away from the mounting cylinder 501. A worm 507 is movably connected inside the movable box 2. The worm 507 is meshed with the worm gear 508. Through the unidirectional transmission characteristics of the worm gear 508 and the worm 507, the mounting cylinder 501 and the external threaded cylinder 503 are locked. Furthermore, an internal hexagon block is installed at one end of each of the two worms 507 through the outer surface of the movable box 2. A circular groove that mates with the internal hexagon block is opened on the outer surface of the movable box 2.

[0033] Specifically, the movable box 2 has a circular hole at the end away from the threaded rod 509 for the installation cylinder 501 to move. The inner wall of the circular hole at one end of the movable box 2 and the outer surface of the fixing ring 506 are provided with limiting protrusions. The outer surface of the installation cylinder 501 and the inner wall of the inner cavity of the movable box 2 are provided with grooves that cooperate with the limiting protrusions. Through the cooperation of the limiting protrusions and the grooves, the installation cylinder 501 and the external threaded cylinder 503 are limited to not rotate, so that the rotation of the threaded rod 509 and the internal threaded cylinder 502 can stably drive the installation cylinder 501 and the external threaded cylinder 503 to move linearly.

[0034] Specifically, the mounting cylinder 501 has a threaded hole at one end near the threaded rod 509, and the mounting cylinder 501 is engaged with the threaded rod 509 through the threaded hole. The mounting cylinder 501 has an insertion hole at the other end away from the threaded rod 509, through which the tip can be inserted into the insertion hole.

[0035] Furthermore, the lathe 1 is internally equipped with a clamping component and a drive component that is connected to the clamping component for transmission, thereby allowing the clamping component to rotate. The lathe 1 also has a cutting component inside its cavity, enabling milling and turning of the metal bar mounted on the clamping component. The worm gear 507 and worm wheel 508 work together to drive the transmission shaft 511 to rotate, which in turn drives the internal threaded cylinder 502 to rotate through the engagement of the transmission gear 510 with the teeth on the outer surface of the internal threaded cylinder 502. This, in turn, drives the external threaded cylinder 503 to rotate. The movement of the moving ring 504 is achieved by the moving ring 504. At this time, the mounting cylinder 501 drives the fixed ring 506 to remain stationary. Thus, the moving ring 504 is driven by the external threaded cylinder 503 to adjust the preload of the preload spring 505, thereby limiting the maximum moving distance of the mounting cylinder 501. This, in turn, limits the squeezing force of the mounting cylinder 501 on the metal rod by the tip. The connection relationship, working principle, and operation sequence between the clamping component, the driving component, the cutting component, and other components are existing technologies and are common knowledge known to those skilled in the art. They will not be elaborated on here.

[0036] Example 2

[0037] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 This is the second embodiment of the present invention. Based on the previous embodiment, the locking component 6 includes two T-shaped blocks 603 disposed inside the movable seat 3. A compression spring 610 is fixedly installed between the top of the two T-shaped blocks 603 and the top of the inner cavity of the movable seat 3. A transmission rod 609 is hinged to both ends of the horizontal part of the T-shaped block 603. A first rotating rod 605 is provided on both sides of the T-shaped block 603. The bottom end of the first rotating rod 605 is hinged to the end of the transmission rod 609 away from the T-shaped block 603. A second rotating rod 606 is also hinged to the bottom end of the first rotating rod 605. A locking block 604 is provided at the bottom end of the second rotating rod 606 and the bottom end of the T-shaped block 603.

[0038] Specifically, the top of the first rotating rod 605 is hinged to the top of the inner cavity of the movable box 2, and the bottom of the second rotating rod 606 is hinged to a fixing rod 608. The bottom of the fixing rod 608 and the bottom of the T-block 603 are fixedly connected to the top of the adjacent locking block 604. The bottom of the inner cavity of the lathe 1 is provided with a toothed groove, and the lower surface of the locking block 604 is provided with an anti-slip groove that matches the toothed groove. The bottom of the movable seat 3 is provided with a groove that matches the locking block 604. Limiting rods 60 are installed on the upper surface of the locking blocks 604 located on both sides of the T-block 603. 7. The top of the bottom groove of the movable seat 3 is provided with a limiting hole that cooperates with the limiting rod 607. The top of the bottom groove of the movable seat 3 is provided with an opening that communicates with the inner cavity of the movable box 2. The fixing rod 608 passes through the inside of the opening. Through the cooperation of the tooth groove and the anti-slip groove, the locking block 604 can be locked with the bottom of the inner cavity of the lathe 1, thereby locking the movable seat 3. Through the cooperation of the limiting hole and the limiting rod 607, as well as the cooperation of the fixing rod 608 and the T-block 603, the locking block 604 can move vertically, preventing the locking block 604 from shifting.

[0039] Specifically, two connecting rods 611 are installed on the top of the T-block 603. The top of the connecting rods 611 passes through the inside of the compression spring 610 and is fixedly connected to the connecting plate 602 on the upper surface of the movable seat 3. The top of the connecting plate 602 is fixedly connected to the U-shaped plate 601. The bottom of the movable seat 3 has a rectangular opening that matches the U-shaped plate 601. The interior of the adjusting seat 4 is equipped with a centering component. The centering component can be used to adjust the top of the mounting cylinder 501 to keep it aligned with the center of the installed metal rod, ensuring a tight clamping effect. The bottom of the U-shaped plate 601 has an opening, which facilitates the adjustment of the centering component inside the adjusting seat 4. The rectangular opening at the bottom of the movable seat 3 facilitates the lifting of the U-shaped plate 601.

[0040] Furthermore, lifting the U-shaped plate 601 causes the T-shaped block 603 to lift via the connecting plate 602 and connecting rod 611. When the T-shaped block 603 lifts the locking block 604 at the bottom, it simultaneously drives the transmission rods 609 on both sides to rotate, thereby driving the first rotating rod 605 and the second rotating rod 606 to rotate. With the help of the limiting rod 607 and the fixing rod 608, the locking block 604 is lifted, thereby unlocking the movable seat 3. Then, the movable seat 3 is pushed to a position close to the metal rod, and then the U-shaped plate 601 is released. Under the reset action of the compression spring 610, This causes the locking block 604 to move downwards, thereby locking the movable seat 3 by engaging the anti-slip groove at the bottom of the locking block 604 with the toothed groove at the bottom of the lathe 1 inner cavity. When the compression spring 610 is reset, the first rotating rod 605 and the second rotating rod 606 can rotate to a vertical state, thereby achieving mechanical locking. This prevents the locking blocks 604 on both sides from being lifted, thus ensuring a stable lock. The connection relationship, working principle, and operation sequence between the centering component and other components are existing technologies and are common knowledge known to those skilled in the art, and will not be elaborated further here.

[0041] Working principle: When machining the driven shaft, the driven shaft is installed inside the lathe 1, and the corresponding center is inserted into the fixed cylinder. Then, the U-shaped plate 601 is lifted, which drives the T-shaped block 603 to lift through the connecting plate 602 and the connecting rod 611. When the T-shaped block 603 drives the locking block 604 at the bottom to lift, it can synchronously drive the transmission rods 609 on both sides to rotate, thereby driving the first rotating rod 605 and the second rotating rod 606 to rotate. With the setting of the limit rod 607 and the fixing rod 608, the locking block 604 is driven to rise, thus... Unlock the movable seat 3, then push it to a position close to the metal rod. Release the U-shaped plate 601. Under the reset action of the compression spring 610, the locking block 604 moves downwards, allowing the anti-slip groove at the bottom of the locking block 604 to engage with the toothed groove at the bottom of the lathe 1's inner cavity, thus locking the movable seat 3 and facilitating unlocking. After locking, adjust the worm gear 507 on the side furthest from the threaded rod 509 using an Allen wrench. The engagement of the worm gear 507 and worm wheel 508 drives the transmission shaft 511 to rotate, thereby enabling the transmission gear 511 to rotate. The engagement of the teeth on the outer surface of the internal threaded cylinder 502 with the mounting cylinder 501 causes the internal threaded cylinder 502 to rotate, thereby causing the external threaded cylinder 503 to rotate. The movement of the external threaded cylinder 503 then causes the moving ring 504 to move. Meanwhile, the mounting cylinder 501 and the fixed ring 506 remain stationary. This allows the external threaded cylinder 503 to adjust the preload of the preload spring 505 via the moving ring 504, thus limiting the maximum movement distance of the mounting cylinder 501 and consequently limiting the pressure exerted by the mounting cylinder 501 on the metal rod by the tip. Once the preload spring 505 is adjusted... Next, adjust the worm gear 507 on one side of the threaded rod 509 using an Allen wrench. This will cause the threaded rod 509 to rotate via the worm wheel 508 and the worm gear 507, thereby causing the mounting cylinder 501 to extend outward. Simultaneously, the top extrudes the metal rod, causing the fixing ring 506 to move. This causes the fixing ring 506 to compress the preload spring 505. Once the preload spring 505 is compressed to its maximum compression, it can no longer be compressed, thus limiting the extrusion force of the mounting cylinder 501 on the metal rod. Finally, the tailstock is adjusted to facilitate the extrusion and fixation of the metal rod.

[0042] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A CNC lathe for machining an adjustable driven shaft, comprising a lathe (1), wherein a movable seat (3) is slidably disposed inside the lathe (1), and an adjusting seat (4) is disposed on the top of the movable seat (3), characterized in that: The top of the adjusting seat (4) is provided with a movable box (2), the inside of the movable box (2) is provided with an adjusting component (5), and the inside of the movable seat (3) is provided with a locking component (6). The adjusting assembly (5) includes a threaded rod (509) movably installed inside the movable box (2). One end of the threaded rod (509) is engaged with an mounting cylinder (501). A fixing ring (506) is installed on the outer surface of the mounting cylinder (501). A moving ring (504) is provided on the side of the fixing ring (506) away from the threaded rod (509). A preload spring (505) is installed between the fixing ring (506) and the moving ring (504). An external threaded cylinder (503) is fixedly installed on the side of the fixing ring (506) away from the moving ring (504). An internal threaded cylinder (502) is engaged with the outer surface of the end of the external threaded cylinder (503) away from the preload spring (505). The locking assembly (6) includes two T-shaped blocks (603) disposed inside the movable seat (3). A compression spring (610) is fixedly installed between the top of the two T-shaped blocks (603) and the top of the inner cavity of the movable seat (3). A transmission rod (609) is hinged to both ends of the horizontal part of the T-shaped block (603). A first rotating rod (605) is provided on both sides of the T-shaped block (603). The bottom end of the first rotating rod (605) is hinged to the end of the transmission rod (609) away from the T-shaped block (603). A second rotating rod (606) is also hinged to the bottom end of the first rotating rod (605). A locking block (604) is provided at the bottom end of the second rotating rod (606) and the bottom end of the T-shaped block (603).

2. The adjustable driven shaft machining CNC lathe according to claim 1, characterized in that: The movable box (2) is movably connected to a drive shaft (511). A drive gear (510) is fixedly installed on the outer surface of the drive shaft (511). The outer surface of the internal threaded cylinder (502) is provided with teeth. The internal threaded cylinder (502) is meshed with the drive gear (510) through the teeth on its outer surface. A worm wheel (508) is fixedly installed on the outer surface of the drive shaft (511) and the outer surface of the threaded rod (509) away from the mounting cylinder (501). A worm (507) is movably connected to the inside of the movable box (2). The worm (507) is meshed with the worm wheel (508).

3. The adjustable driven shaft machining CNC lathe according to claim 2, characterized in that: The movable box (2) has a circular hole at one end away from the threaded rod (509) for the installation cylinder (501) to move. The inner wall of the circular hole at one end of the movable box (2) and the outer surface of the fixing ring (506) are provided with limit protrusions. The outer surface of the installation cylinder (501) and the inner wall of the inner cavity of the movable box (2) are provided with grooves that cooperate with the limit protrusions.

4. The adjustable driven shaft machining CNC lathe according to claim 3, characterized in that: The mounting cylinder (501) has a threaded hole at one end near the threaded rod (509), and the mounting cylinder (501) is engaged with the threaded rod (509) through the threaded hole. The mounting cylinder (501) has an insertion hole at one end away from the threaded rod (509).

5. A CNC lathe for machining adjustable driven shafts according to claim 4, characterized in that: The top end of the first rotating rod (605) is hinged to the top of the inner cavity of the movable box (2), and the bottom end of the second rotating rod (606) is hinged to a fixing rod (608). The bottom end of the fixing rod (608) and the bottom of the T-block (603) are both fixedly connected to the top of the adjacent locking block (604).

6. A CNC lathe for machining adjustable driven shafts according to claim 5, characterized in that: The lathe (1) has a toothed groove at the bottom of its inner cavity. The locking block (604) has an anti-slip groove on its lower surface that matches the toothed groove. The movable seat (3) has a groove at its bottom that matches the locking block (604). Limiting rods (607) are installed on the upper surface of the locking block (604) located on both sides of the T-block (603). The movable seat (3) has a limiting hole at the top of its bottom groove that matches the limiting rod (607). The movable seat (3) has an opening at the top of its bottom groove that communicates with the inner cavity of the movable box (2). The fixing rod (608) passes through the opening.

7. A CNC lathe for machining adjustable driven shafts according to claim 5, characterized in that: Two connecting rods (611) are installed on the top of the T-shaped block (603). The top of the connecting rod (611) passes through the inside of the compression spring (610) and is fixedly connected to the connecting plate (602) on the upper surface of the moving seat (3). The top of the connecting plate (602) is fixedly connected to the U-shaped plate (601). The bottom of the moving seat (3) has a rectangular opening that matches the U-shaped plate (601).

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