Spindle concentricity aligning device of turning and milling composite machine tool

Abstract

The invention discloses a turning and milling composite machine tool spindle concentricity aligning device, belongs to the technical field of mechanical machining, and aims at solving the problems that in the prior art, operation is tedious, efficiency is low, and the aligning precision is difficult to guarantee, the turning and milling composite machine tool spindle concentricity aligning device comprises a workbench, and a plurality of universal self-locking wheels are fixedly connected to the bottom of the workbench; a limiting mechanism is arranged at the top of the workbench, a workpiece is placed in the limiting mechanism, and an alignment mechanism is arranged in the workpiece. A benchmark is established through accurate connection of the alignment mechanism, the threaded connector and the main shaft, it is ensured that the round rod and the main shaft are coaxial, and then the position of the workpiece is adjusted with the round rod as a reference; and stable and controllable concentricity alignment logic is formed, the deviation probability is effectively reduced, the concentricity precision of the main shaft and the workpiece is guaranteed, then the problems of machining vibration, cutting precision reduction, cutter breakage, workpiece scrapping and the like are reduced, operation links are greatly reduced, the alignment time consumption is shortened, the labor cost is reduced, and the requirement for efficient production is better met.

Description

Technical Field

[0001] This invention belongs to the field of machining technology, specifically relating to a spindle concentricity adjustment device for a milling and turning composite machine tool. Background Technology

[0002] A milling-turning machine tool is a high-precision machining equipment that integrates multiple machining functions such as turning and milling. Its spindle system, as the core moving component, directly determines the accuracy and surface quality of the machined workpiece. After long-term use of the machine tool, wear of components, or assembly maintenance, concentricity deviations can easily occur between the spindle and the matching machining components, leading to vibration during machining, reduced cutting accuracy, and even problems such as tool breakage and workpiece scrap.

[0003] The prior art patent publication number CN106514422A describes a method for aligning the concentricity of a milling-turning machine spindle. This patent involves placing a sample workpiece on a fixture and fixing it in place. The fixture is then installed in the milling-turning machine. The center of the sample workpiece is determined, and a reference hole is milled at the center of the workpiece. The fixture is then released, and the fixture, along with the sample workpiece, is placed at the machining position of the milling-turning machine. A dial indicator is used in conjunction with the machine spindle to align the reference hole, ensuring that the centers of the reference hole on the machine spindle and the sample workpiece coincide. The fixture is then locked, and the origin of the machine spindle is set. This invention, however, first selects a workpiece to be machined as a sample workpiece. The sample workpiece is fixed in a fixture. A reference circle for alignment is machined on the sample workpiece. Then, a dial indicator is used in conjunction with the machine tool spindle to extend into the reference circle. The spindle rotates to push the sample workpiece and the fixture to adjust their position so that they coincide with the center of the spindle, thus achieving concentricity with the spindle. However, in actual use, the following shortcomings still exist: From a practical point of view, this device requires multiple steps such as selecting the sample workpiece, determining the center, milling the reference circle hole, and multiple clamping and adjustment. The process is complex and time-consuming, with high labor costs, making it difficult to meet the needs of efficient production. At the same time, relying on the dial indicator to push the sample workpiece to drive the fixture for correction, the adjustment range is difficult to control precisely due to the influence of dial indicator accuracy, friction, inertia, etc., and deviations are prone to occur.

[0004] Therefore, a spindle concentricity adjustment device for milling and turning composite machine tools is needed to solve the problems of cumbersome operation, low efficiency, and difficulty in ensuring adjustment accuracy in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a spindle concentricity adjustment device for a milling and turning machine tool to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spindle concentricity adjustment device for a milling and turning composite machine tool, comprising a worktable, a plurality of universal self-locking wheels fixedly connected to the bottom of the worktable, a limit mechanism provided on the top of the worktable, a workpiece placed inside the limit mechanism, and an alignment mechanism provided inside the workpiece.

[0007] It should be noted in the solution that the limiting mechanism includes a lower arc seat fixedly connected to the top of the worktable, a convex frame fixedly connected to the top of the worktable, a cylinder fixedly connected to the top of the convex frame, a push plate fixedly connected to the output end of the cylinder, two slide rods fixedly connected to the bottom of the push plate, an upper arc seat slidably connected to the bottom of the two slide rods, and springs sleeved on the outer walls of the two slide rods.

[0008] It is worth noting that both springs are fixedly connected between the bottom of the push plate and the top of the upper arc seat.

[0009] It should be further noted that both the outer wall of the lower arc seat and the outer wall of the upper arc seat are fixedly connected with protective sleeves.

[0010] In a preferred embodiment, the alignment mechanism includes a round rod. Threaded seats are rotatably connected to the outer walls of the round rod near both sides. A turntable is fixedly connected to the outer sides of each of the two threaded seats. A first sleeve is rotatably connected to the outer walls of each of the two threaded seats. Two second sleeves are fixedly connected to the outer walls of the round rod near the inner side. Multiple first hinge seats are fixedly connected to the outer walls of each of the two first sleeves. Multiple second hinge seats are fixedly connected to the outer walls of each of the two second sleeves. A first connecting rod is rotatably connected inside each of the multiple first hinge seats. A second connecting rod is rotatably connected inside each of the multiple second hinge seats. An inner support plate is rotatably installed at the outer ends of each corresponding pair of first and second connecting rods. A threaded joint is fixedly connected to the end of the round rod.

[0011] In a preferred embodiment, the first and second links of each pair are rotatably connected.

[0012] In a preferred embodiment, anti-slip strips are fixedly connected to the outer walls of the plurality of inner support plates.

[0013] Compared with the prior art, the spindle concentricity adjustment device of the milling and turning composite machine tool provided by the present invention has at least the following beneficial effects:

[0014] (1) By setting up the alignment mechanism, the precise connection between the threaded joint and the spindle establishes a benchmark, ensuring that the round rod is coaxial with the spindle. Then, the workpiece position is adjusted with the round rod as a reference, forming a stable and controllable concentricity adjustment logic, effectively reducing the probability of deviation, ensuring the concentricity accuracy of the spindle and the workpiece, thereby reducing problems such as machining vibration, decreased cutting accuracy, tool breakage and workpiece scrap, significantly reducing operation links, shortening adjustment time, reducing labor costs, and better meeting the needs of high-efficiency production.

[0015] (2) By setting a limiting mechanism, with the cooperation of the slide bar and the spring, the upper arc seat can perform the clamping function while the workpiece can be adjusted within a small range, so as to facilitate the alignment of the workpiece with the spindle and ensure the stability of subsequent processing. Attached Figure Description

[0016] Figure 1 This is a first-view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the second perspective structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the limiting mechanism of the present invention;

[0019] Figure 4 This is a schematic diagram of the alignment mechanism of the present invention.

[0020] In the diagram: 1. Workbench; 2. Universal self-locking wheel; 3. Limiting mechanism; 301. Lower arc seat; 302. Convex frame; 303. Cylinder; 304. Push plate; 305. Slide rod; 306. Upper arc seat; 307. Spring; 4. Workpiece; 5. Alignment mechanism; 501. Round rod; 502. Threaded seat; 503. Turntable; 504. First sleeve; 505. Second sleeve; 506. First hinge seat; 507. Second hinge seat; 508. First connecting rod; 509. Second connecting rod; 510. Inner support plate; 511. Threaded joint. Detailed Implementation

[0021] The present invention will be further described below with reference to embodiments.

[0022] Please see Figure 1-4 The present invention provides a spindle concentricity adjustment device for a milling and turning composite machine tool, including a worktable 1, a plurality of universal self-locking wheels 2 fixedly connected to the bottom of the worktable 1, a limit mechanism 3 provided on the top of the worktable 1, a workpiece 4 placed inside the limit mechanism 3, and an alignment mechanism 5 provided inside the workpiece 4.

[0023] Further as Figure 3As shown, it is worth noting that the limiting mechanism 3 includes a lower arc seat 301 fixedly connected to the top of the worktable 1, a convex frame 302 fixedly connected to the top of the worktable 1, a cylinder 303 fixedly connected to the top of the convex frame 302, a push plate 304 fixedly connected to the output end of the cylinder 303, two slide rods 305 fixedly connected to the bottom of the push plate 304, an upper arc seat 306 slidably connected to the bottom of the two slide rods 305, and springs 307 sleeved on the outer walls of the two slide rods 305. By setting the limiting mechanism 3, with the cooperation of the slide rods 305 and the springs 307, the upper arc seat 306 can perform the clamping function while the workpiece can be adjusted within a small range, thereby facilitating the alignment of the workpiece with the spindle and ensuring the stability of subsequent processing.

[0024] Further as Figure 3 As shown, it is worth noting that both springs 307 are fixedly connected between the bottom of the push plate 304 and the top of the upper arc seat 306. The bottom of the slide rod 305 extends to the center of the upper arc seat 306. The springs 307 enable the upper arc seat 306 to slide and rise flexibly.

[0025] Further as Figure 3 As shown, it is worth noting that both the outer wall of the lower arc seat 301 and the outer wall of the upper arc seat 306 are fixedly connected with protective sleeves. During the placement, clamping, or fine-tuning of the workpiece, the outer wall of the workpiece and the inner wall of the arc seat will have slight relative contact. The protective sleeves can prevent the arc seat from directly rubbing against the surface of the workpiece. Especially for precision workpieces with high surface accuracy requirements, it can effectively prevent surface damage such as scratches and abrasions, and reduce the risk of workpiece scrap due to surface defects.

[0026] As can be seen from the above working process, by setting the limiting mechanism 3, with the cooperation of the slide bar 305 and the spring 307, the upper arc seat 306 can perform the clamping function while the workpiece can be adjusted within a small range, so as to facilitate the alignment of the workpiece with the spindle and ensure the stability of subsequent processing.

[0027] Further as Figure 4As shown, it is worth noting that the alignment mechanism 5 includes a round rod 501. Threaded seats 502 are rotatably connected to the outer walls of the round rod 501 near both sides. Turntables 503 are fixedly connected to the outer sides of both threaded seats 502. First sleeves 504 are rotatably connected to the outer walls of both threaded seats 502. Two second sleeves 505 are fixedly connected to the outer walls of the round rod 501 near the inner side. Multiple first hinge seats 506 are fixedly connected to the outer walls of both first sleeves 504. Multiple second hinge seats 507 are fixedly connected to the outer walls of both second sleeves 505. First connecting rods 508 are rotatably connected inside the multiple first hinge seats 506. Second connecting rods 509 are rotatably connected inside the multiple second hinge seats 507. An inner support plate 510 is rotatably installed at the outer ends of each corresponding first connecting rod 508 and second connecting rod 509. A threaded joint 511 is fixedly connected to the end of the round rod 501. By setting up the alignment mechanism 5, the threaded joint 511... A precise connection with the spindle establishes a benchmark, ensuring that the round rod 501 is coaxial with the spindle. Then, using the round rod 501 as a reference, the workpiece position is adjusted. The round rod 501 passes through the inside of the workpiece 4. Rotating the turntable 503 drives the threaded seat 502 to rotate. As the threaded seat 502 rotates, it drives the first sleeve 504 to move inward. Under the action of the first connecting rod 508 and the second connecting rod 509, the inward movement of the first sleeve 504 can drive multiple inner support plates 510 to expand outward. Thus, the multiple inner support plates 510 support the workpiece 4. Since the center of the multiple inner support plates 510 is consistent with the center of the round rod 501, it is ensured that the workpiece 4, the round rod 501, and the spindle are in the same center, forming a stable and controllable concentricity adjustment logic. This effectively reduces the probability of deviation, ensures the concentricity accuracy of the spindle and the workpiece 4, and reduces problems such as machining vibration, decreased cutting accuracy, and tool breakage. It also significantly reduces operation steps, shortens adjustment time, reduces labor costs, and is more suitable for high-efficiency production needs.

[0028] Further as Figure 4 As shown, it is worth noting that the corresponding first link 508 and second link 509 in each group are rotatably connected to ensure that the relative movement between the first link 508 and the second link 509 can drive the inner support plate 510 to rise and fall.

[0029] Further as Figure 4 As shown, it is worth noting that anti-slip strips are fixedly connected to the outer walls of multiple inner support plates 510. The anti-slip strips can effectively increase the friction between the inner support plate 510 and the surface of the workpiece 4, and prevent the inner support plate 510 from sliding or moving on the contact surface of the workpiece 4.

[0030] This solution has the following working process: In actual use, the workpiece 4 to be adjusted is placed on the lower arc seat 301 of the top limiting mechanism 3 of the worktable 1. At this time, the universal self-locking wheel 2 at the bottom of the worktable 1 is in a self-locking state, ensuring that the position of the worktable 1 is fixed and preventing displacement during the adjustment process; the cylinder 303 at the top of the convex frame 302 is activated, and the output end of the cylinder 303 pushes the push plate 304 downward. The push plate 304 drives the two slide rods 305 at the bottom to move downward simultaneously. The slide rods 305 push the upper arc seat 306 closer to the workpiece 4 until the upper arc seat 306 and the lower arc seat 301 together initially clamp the workpiece 4. During the process, the spring 307 sleeved on the outer wall of the slide bar 305 is in a compressed state, providing clamping force while retaining a small range of adjustment space for the workpiece 4, avoiding over-clamping that could cause deformation of the workpiece 4 or prevent fine-tuning; the round rod 501 of the alignment mechanism 5 is passed through the internal through hole of the workpiece 4, and the threaded joint 511 at the end of the round rod 501 is precisely connected to the spindle of the turning and milling compound machine tool. The threaded fit ensures a stable connection. At this time, the round rod 501 is coaxial with the spindle, establishing a benchmark for concentricity adjustment; the turntable 503 on the threaded seats 502 on both sides of the outer wall of the round rod 501 is rotated, causing the threaded seats 502 to move axially along the round rod 501. When the threaded seat 502 moves inward, the first sleeve 504, which is rotatably connected to its outer wall, moves inward toward the second sleeve 505 fixed on the round rod 501. Since the first hinge seat 506 on the outer wall of the first sleeve 504 is rotatably connected to the first connecting rod 508, and the second hinge seat 507 on the outer wall of the second sleeve 505 is rotatably connected to the second connecting rod 509, and the ends of each set of first connecting rods 508 and second connecting rods 509 are rotatably connected to the inner support plate 510, the inward movement of the first sleeve 504 will push the first connecting rods 508 and second connecting rods 509 to unfold, causing multiple inner support plates 510 to expand outward. The anti-slip strips on the outer wall of the inner support plate 510 increase the friction with the inner wall of the workpiece 4, preventing relative sliding, until multiple inner support plates 510 are tightly pressed against the inner wall of the workpiece 4. Since the center of the inner support plate 510 is consistent with the center of the round rod 501, the workpiece 4 automatically adjusts its position under the action of the inner support force, and finally becomes coaxial with the round rod 501 and the spindle, completing the concentricity adjustment. After the concentricity adjustment is completed, the position of the workpiece 4 is confirmed to be stable. The output force of the cylinder 303 can be further adjusted as needed to make the upper arc seat 306 and the lower arc seat 306 firmly clamp the workpiece 4. Then the alignment mechanism 5 is removed, and the machine tool can be started to process the workpiece 4.

[0031] In summary: By setting the limiting mechanism 3, with the cooperation of the slide bar 305 and the spring 307, the upper arc seat 306 can perform the clamping function while allowing the workpiece to be adjusted within a small range, thus facilitating the alignment of the workpiece with the spindle and ensuring the stability of subsequent processing; by setting the alignment mechanism 5, a stable and controllable concentricity adjustment logic is formed, effectively reducing the probability of deviation and ensuring the concentricity accuracy of the spindle and the workpiece 4, thereby reducing problems such as processing vibration, decreased cutting accuracy, and tool breakage, significantly reducing operation steps, shortening adjustment time, reducing labor costs, and better meeting the needs of high-efficiency production.

[0032] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

Claims

1. A spindle concentricity adjustment device for a milling and turning composite machine tool, comprising a worktable (1), characterized in that: The bottom of the workbench (1) is fixedly connected with multiple universal self-locking wheels (2), and the top of the workbench (1) is provided with a limiting mechanism (3). The limiting mechanism (3) contains a workpiece (4), and the workpiece (4) contains an alignment mechanism (5).

2. The spindle concentricity adjustment device for a milling and turning composite machine tool according to claim 1, characterized in that: The limiting mechanism (3) includes a lower arc seat (301) fixedly connected to the top of the workbench (1), a convex frame (302) fixedly connected to the top of the workbench (1), a cylinder (303) fixedly connected to the top of the convex frame (302), a push plate (304) fixedly connected to the output end of the cylinder (303), two slide rods (305) fixedly connected to the bottom of the push plate (304), an upper arc seat (306) slidably connected to the bottom of the two slide rods (305), and a spring (307) sleeved on the outer wall of each of the two slide rods (305).

3. The spindle concentricity adjustment device for a milling and turning composite machine tool according to claim 2, characterized in that: Both springs (307) are fixedly connected between the bottom of the push plate (304) and the top of the upper arc seat (306).

4. The spindle concentricity adjustment device for a milling and turning composite machine tool according to claim 2, characterized in that: The outer walls of the lower arc seat (301) and the upper arc seat (306) are both fixedly connected with protective sleeves.

5. The spindle concentricity adjustment device for a milling and turning composite machine tool according to claim 1, characterized in that: The alignment mechanism (5) includes a round rod (501), with threaded seats (502) rotatably connected to the outer walls of the round rod (501) near both sides. A turntable (503) is fixedly connected to the outer sides of each of the two threaded seats (502). A first sleeve (504) is rotatably connected to the outer walls of each of the two threaded seats (502). Two second sleeves (505) are fixedly connected to the outer walls of the round rod (501) near the inner side. Multiple first hinge seats (504) are fixedly connected to the outer walls of each of the two first sleeves (504). 506), the outer walls of the two second sleeves (505) are fixedly connected with multiple second hinge seats (507), the multiple first hinge seats (506) are rotatably connected with a first connecting rod (508), the multiple second hinge seats (507) are rotatably connected with a second connecting rod (509), the outer ends of the corresponding first connecting rod (508) and the outer ends of the second connecting rod (509) are rotatably installed with an inner support plate (510), and the end of the round rod (501) is fixedly connected with a threaded joint (511).

6. The spindle concentricity adjustment device for a milling and turning composite machine tool according to claim 5, characterized in that: The first link (508) and the second link (509) of each pair are rotatably connected.

7. The spindle concentricity adjustment device for a milling and turning composite machine tool according to claim 5, characterized in that: Anti-slip strips are fixedly connected to the outer walls of the multiple inner support plates (510).

Images