Rotary machining device for horizontal milling machine

Abstract

The utility model discloses a rotary machining device for a horizontal milling machine, and belongs to the technical field of machining. The device comprises a fixed table assembly, a rotary table and a positioning and pressing device. The fixed table assembly is rigidly connected with the fixed table through a fixed shaft, a rotating disc is arranged at the lower end of the rotary table, the rotating disc is embedded into a circular rotating groove of the fixed table, and stable rotation is achieved through tight attachment and low-friction design; and the positioning and pressing device is matched with the concentric taper hole through a conical surface positioning sleeve, so that high-precision positioning of the rotary table after rapid overturning is ensured. When two parallel planes are machined, a workpiece is clamped on the T-shaped groove of the rotary table, the positioning column is loosened after one face is milled, and the other face can be machined by rotating by 180 degrees. Through precise matching of the rotating disc and the rotating groove, the problems that a traditional rotating disc cannot be used for a super-long casting, turning-over precision is low, and efficiency is insufficient are solved, meanwhile, abrasion is remarkably reduced, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of machining, specifically relates to a rotary processing device for horizontal milling machine. BACKGROUND

[0002] In the field of machining, castings are widely used in the automobile, aerospace, heavy machinery and other industries due to their near net shape characteristics. With the progress of casting process, the dimensional accuracy and surface quality of castings are significantly improved, but the key functional surface still needs to be further processed by milling, grinding and other processes. Especially when processing symmetrical parallel planes on a horizontal milling machine, the positioning reference of the workpiece and the processing efficiency become the core challenge.

[0003] The traditional rotary disc has the following defects:

[0004] 1. Stroke limitation: The workbench of the horizontal milling machine is 300mmX1200mm, and the rotary indexing disc on the market is usually circular. The horizontal milling machine can only use a rotary indexing disc with a diameter of 350mm, and workpieces with a length size of 300mm-1000mm cannot be clamped for rotary processing on the rotary indexing disc.

[0005] 2. Insufficient accuracy: When processing castings, one end needs to be processed first, and the workpiece needs to be flipped and repositioned after being removed, which causes the reference surface to shift and accumulates errors, making it difficult to meet high precision requirements.

[0006] 3. Low efficiency: Each time the surface is flipped, it needs to be re-aligned, especially when the casting uses the unprocessed blank surface as the reference, which consumes a lot of time and relies on the experience of the operator, with poor consistency.

[0007] In summary, the existing technology cannot balance high-precision processing, high-efficiency flipping and low-cost requirements, especially for ultra-long castings and blank surface positioning scenarios, and lacks effective solutions. The utility model aims to break through the above technical bottlenecks through innovative structural design to meet the urgent needs of the industry for efficient, accurate and universal processing devices. UTILITY MODEL CONTENTS

[0008] The utility model aims to provide a rotary processing device for horizontal milling machine, to solve the problems raised in the above background technology.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A rotary processing device for horizontal milling machine, comprising a fixed table assembly, a rotary table and a positioning and pressing device;

[0011] The fixed platform assembly includes a fixed platform with a horizontal upper surface. A rotating groove is formed on the top surface of the fixed platform. The rotating groove is circular, with its sidewall perpendicular to the bottom surface and its bottom surface parallel to the upper surface of the fixed platform. An inner hole for the fixed platform is provided at the center of the rotating groove. The inner hole is perpendicular to the fixed platform and extends through it. A fixed shaft is inserted into the inner hole. A fixed seat is provided at the lower end of the fixed shaft. The fixed seat is connected to the fixed platform by fasteners. Fixed platform positioning holes are symmetrically provided at both ends of the fixed platform.

[0012] The rotary table is mounted on a fixed platform. The upper and lower surfaces of the rotary table are parallel. A rotating disk is fixedly connected to the lower surface of the rotary table. The rotating disk is engaged in a rotating groove and fits tightly with the rotating groove. The rotating disk can rotate within the rotating groove. The rotary table has an inner hole. The inner hole of the fixed platform is coaxial with the inner hole of the rotary table. Rotary table positioning holes are symmetrically provided on the left and right sides of the rotary table. The rotary table positioning holes are coaxial with the positioning holes of the fixed platform. The upper surface of the rotary table has a T-shaped groove for connecting and fixing components of the workpiece.

[0013] The positioning and clamping device includes a positioning post with a threaded lower end. The positioning post passes through the positioning holes on the left and right sides of the rotary table and is screwed into the positioning hole of the fixed table to lock the fixed table and the rotary table.

[0014] Furthermore, the rotary table positioning hole and the fixed table positioning hole form a fixed conical hole. The inner wall of the rotary table positioning hole and the inner wall of the fixed table positioning hole belong to the same conical surface, and the lower diameter of the rotary table positioning hole is equal to the upper diameter of the fixed table positioning hole. The rotary table positioning hole and the fixed table positioning hole are located on the same axis. A positioning sleeve is fitted on the positioning post. The side of the positioning sleeve is a conical surface. The positioning sleeve is inserted into the positioning conical hole. The positioning sleeve and the fixed conical hole are interference fit. There is a gap between the inner wall of the positioning sleeve and the positioning post. A baffle is provided on the positioning post. The end abuts against the lower end face of the baffle. A retaining spring is sleeved on the positioning post. The retaining spring is located at the lower end of the positioning sleeve and is used to limit the positioning sleeve. The positioning sleeve is engaged in the fixed conical hole formed by the positioning hole of the rotary table and the positioning hole of the fixed table. The positioning holes of the fixed table and the rotary table adopt high-precision conical holes, which are matched with the conical surface of the positioning sleeve to realize the automatic centering function, reduce the error of manual intervention. The positioning post and the inner hole of the positioning sleeve are reserved with a gap, which allows the positioning sleeve to be freely fine-tuned during the conical surface fitting process, avoiding stress concentration caused by screw installation deviation or thermal expansion, and further improving the positioning stability.

[0015] Furthermore, the upper end of the positioning post is provided with threads, and a nut is screwed onto the upper end of the positioning post for further locking the fixed platform and the rotary table.

[0016] Furthermore, the upper end of the positioning post is provided with a through hole in the horizontal direction, and a rotating rod is inserted into the through hole for pre-installing the positioning sleeve into the fixed conical hole.

[0017] Furthermore, a rotary sleeve is provided between the inner hole of the rotary table and the fixed shaft to further limit the rotation of the rotary table. The rotary sleeve and the inner hole of the rotary table form an interference fit. The upper end of the fixed shaft is provided with a screw hole. The rotary sleeve and the fixed shaft are connected by fasteners.

[0018] Furthermore, the upper end of the fixed shaft is provided with a thread, and a lock nut is screwed onto the upper end of the fixed shaft to fix the rotating sleeve.

[0019] Furthermore, two locking nuts are provided; the two locking nuts form a double-nut locking method to prevent the two locking nuts from loosening during the frequent rotation of the upper and lower rotary tables.

[0020] Furthermore, a dust cover is provided at the top of the fixed shaft, and the dust cover is connected to the fixed shaft by fasteners to prevent machining debris from entering the rotary mechanism.

[0021] Furthermore, the fixed shaft has a screw hole at its top center and the dust cover has a through hole at its center. The dust cover is connected to the fixed shaft by a countersunk bolt.

[0022] Furthermore, the fixed table is provided with side grooves on both the left and right sides for fixing the fixed table to the horizontal milling machine.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. High positioning accuracy and stability: The positioning holes of the fixed table and rotary table adopt high-precision concentric conical holes, which, together with the conical surface of the positioning sleeve, achieve automatic centering and reduce manual intervention errors. A radial clearance is reserved between the positioning pin and the inner hole of the positioning sleeve, allowing the positioning sleeve to be freely fine-tuned during the conical surface contact process, avoiding stress concentration caused by screw installation deviations or thermal expansion, further improving positioning stability. The rotating disk at the lower end of the rotary table and the circular rotating groove of the fixed table are machined with high precision to ensure minimal radial and axial runout during rotation, significantly improving the parallelism of the machined surfaces.

[0025] 2. High-efficiency processing and time cost optimization: Traditional flipping requires disassembling the workpiece and realigning it, while this device achieves rapid flipping by rotating a 180° rotary table. It only requires loosening the positioning pin, rotating and then locking it again, thus improving the overall processing efficiency.

[0026] 3. High compatibility: Clamping is performed using the unmachined datum surface of the casting, eliminating the need for dedicated positioning fixtures and reducing fixture manufacturing costs. The fixed table, rotary table, and positioning clamping device use standardized interfaces, and damaged parts can be replaced individually. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the positioning column structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the fixing platform of this utility model;

[0030] Figure 4 This is a schematic diagram of the rotary table of this utility model;

[0031] Figure 5 This is a schematic diagram of the installation of this utility model;

[0032] In the diagram, 1-fixed platform, 101-rotating groove, 102-fixed platform inner hole, 103-fixed platform positioning hole, 104-side groove, 2-fixed shaft, 201-fixed seat, 202-bolt, 203-rotating sleeve, 204-locking nut, 205-dust cover, 206-countersunk bolt, 3-rotating platform, 301-rotating disk, 302-rotating platform inner hole, 303-rotating platform positioning hole, 304-T-slot, 4-positioning post, 401-positioning sleeve, 402-baffle, 403-circlip, 404-flange nut, 405-rotating rod. Detailed Implementation

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0034] like Figures 1-5 As shown, a rotary machining device for a horizontal milling machine includes a fixed table 1 assembly, a rotary table 3, and a positioning and clamping device.

[0035] The fixed platform 1 assembly includes a fixed platform 1 and a fixed shaft 2. The upper surface of the fixed platform 1 is horizontal. A rotating groove 101 is provided on the top surface of the fixed platform 1. The rotating groove 101 is circular. The side wall of the rotating groove 101 is perpendicular to the bottom surface of the rotating groove 101, and the bottom surface of the rotating groove 101 is parallel to the upper surface of the fixed platform 1. The center of the rotating groove 101 is provided with a fixed platform inner hole 102. The fixed platform inner hole 102 is vertically provided in the fixed platform 1 and penetrates through the fixed platform 1. The fixed shaft 2 is inserted into the fixed platform inner hole 102. A fixed seat 201 is provided at the lower end of the fixed shaft 2. The fixed seat 201 is connected to the fixed platform 1 by bolts 202. The upper end of the fixed shaft 2 is threaded, and two locking nuts 204 are screwed onto the upper end of the fixed shaft 2. The lower locking nut 204 is used to fix the rotary sleeve 203, and the upper locking nut 204 is used to lock the lower locking nut 204, so that the two locking nuts 204 form a double nut locking method to prevent the two locking nuts 204 from loosening during the frequent rotation of the upper and lower rotary tables 3. The top of the fixed shaft 2 is equipped with a dust cover 205, and the center of the top of the fixed shaft 2 is provided with a screw hole. The center of the dust cover 205 is provided with a through hole. The dust cover 205 is connected to the fixed shaft 2 by a countersunk bolt 206 to prevent machining debris from entering the rotary mechanism. The left and right ends of the fixed table 1 are symmetrically provided with fixed table positioning holes 103 for connecting the rotary table positioning holes 303. The left and right sides of the fixed table 1 are provided with side grooves 104 for fixing the fixed table 1 to the horizontal milling machine.

[0036] A rotary table 3 is mounted on a fixed platform 1. The upper and lower surfaces of the rotary table 3 are parallel. A rotating disk 301 is fixedly connected to the lower surface of the rotary table 3. The rotating disk 301 is engaged in a rotating groove 101, and the rotating disk 301 and the rotating groove 101 are in close contact. The rotating disk 301 can rotate within the rotating groove 101. A wear-resistant titanium nitride coating can be applied to the surface of the rotating disk 301, and grease can be filled into the contact surface with the rotating groove 101 to avoid wear accumulation caused by long-term rotation. The rotary table 3 has an inner hole 302. The inner hole 102 of the fixed platform is coaxial with the inner hole 302 of the rotary table. The fixed shaft 2 passes through the inner hole 102 of the fixed platform and the inner hole 302 of the rotary table in sequence. A rotating sleeve 203 is provided between the inner hole 302 of the rotary table and the fixed shaft 2 to further limit the rotation of the rotary table 3. The rotating sleeve 203 and the inner hole 302 of the rotary table form an interference fit. The rotary table 3 has symmetrical rotary table positioning holes 303 on its left and right sides. The rotary table positioning holes 303 are coaxial with the fixed table positioning holes 103. The rotary table positioning holes 303 and the fixed table positioning holes 103 form a fixed conical hole. The inner wall of the rotary table positioning hole 303 and the inner wall of the fixed table positioning hole 103 belong to the same conical surface, and the lower diameter of the rotary table positioning hole 303 is equal to the upper diameter of the fixed table positioning hole 103. The upper surface of the rotary table 3 is provided with a T-shaped groove 304 for connecting and fixing the workpiece.

[0037] The positioning and clamping device includes a positioning pin 4, with a threaded lower end. A positioning sleeve 401 is fitted onto the positioning pin 4. The side of the positioning sleeve 401 is conical, and the positioning sleeve 401 is interference-fitted with the fixed conical hole. A gap is provided between the inner wall of the positioning sleeve 401 and the positioning pin 4, allowing for free fine-tuning of the positioning sleeve 401 during the conical surface contact process. This avoids stress concentration caused by installation deviations of the positioning pin 4 or thermal expansion, further improving positioning stability. A baffle 402 is provided on the positioning pin 4, and the upper end of the positioning sleeve 401 abuts against the lower end face of the baffle 402. A retaining spring 403 is fitted onto the lower end of the positioning sleeve 401 to prevent it from sliding downwards. The positioning pin 4 is inserted into the fixed cone hole formed by the positioning hole 303 of the rotary table and the positioning hole 103 of the fixed table. The positioning pin 4 passes through the rotary table positioning holes 303 on the left and right sides of the rotary table 3. The lower end of the positioning pin 4 is screwed into the positioning hole 103 of the fixed table to lock the fixed table 1 and the rotary table 3. The upper end of the positioning pin 4 is provided with threads, and a flange nut 404 is screwed into the upper end of the positioning pin 4 to further lock the fixed table 1 and the rotary table 3 and prevent the positioning pin 4 from loosening. The upper end of the positioning pin 4 is provided with a through hole in the horizontal direction. A rotating rod 405 is inserted into the through hole. The positioning sleeve 401 is driven by the rotating rod 405 to fit the cone surface and pre-install the positioning sleeve 401 into the fixed cone hole.

[0038] The positioning sleeve 401 achieves automatic centering by tightly fitting its conical surface with the concentric conical holes of the fixed table 1 and the rotary table 3, eliminating manual adjustment errors and ensuring a repeatability accuracy of ±0.005mm, guaranteeing a parallelism error of ≤0.02mm on the machined surface. A 2mm radial gap is reserved between the inner wall of the positioning sleeve 401 and the positioning post 4, allowing the positioning sleeve 401 to be freely fine-tuned during the conical surface fitting process, avoiding stress concentration caused by thermal expansion or installation deviations, and improving positioning stability. After the positioning sleeve 401 is driven down to fit the conical hole by the rotating rod 405, it only needs to be tightened with the flange nut 404 to complete the locking. The operation time for flipping is ≤5 minutes, increasing efficiency by 60%-70%. 180° flipping can be achieved without disassembling the workpiece, reducing the secondary clamping and alignment steps required for traditional flipping, and shortening the processing time per piece by 50%. The rotating rod 405 and the flange nut 404 must be operated in sequence, first fitting the conical surface and then tightening, to prevent the safety risk of starting the machine tool before complete positioning. With dual fixation of conical surface and mechanical locking, it can withstand high-frequency vibration during processing and improves displacement resistance by 3 times.

[0039] The cooperation between the rotating groove 101 and the rotating disk 301 ensures that the radial runout of the rotary table 3 is ≤0.01mm and the axial runout is ≤0.005mm when rotating in the horizontal direction, thereby improving the parallelism of the rotary table 3 during rotation. The cooperation between the rotating disk 301 and the rotating groove 101 allows the rotary table 3 to be easily rotated manually, reducing the flipping time from the traditional 30 minutes to ≤5 minutes, and improving efficiency by 60%-70%.

[0040] The positioning holes of the fixed platform 1 and the rotary platform 3 adopt high-precision concentric conical holes, which, together with the conical surface of the positioning sleeve 401, realize the automatic centering function, reduce the error of manual intervention, and the positioning column 4 and the inner hole of the positioning sleeve 401 are reserved with a gap, which allows the positioning sleeve 401 to be freely fine-tuned during the conical surface fitting process, avoiding stress concentration caused by screw installation deviation or thermal expansion, and further improving positioning stability.

[0041] The precise fit between the rotating disk 301 and the rotating groove 101 provides rotational freedom and stability, while the positioning and clamping device ensures high-precision positioning and rigid locking. The combined effect of these two components significantly improves both machining accuracy and efficiency.

[0042] The method of using this utility model is as follows:

[0043] Place the fixed table 1 on the worktable of the horizontal milling machine. Use bolts 202 and the side grooves 104 on both sides of the fixed table 1 to initially fix the fixed table 1 to the worktable. Then use a dial indicator to align the upper surface of the fixed table 1, ensuring that its levelness error is less than or equal to 0.02mm. Then use a torque wrench to tighten the bolts 202 evenly. Next, insert the fixed shaft 2 into the inner hole 102 of the fixed table. The lower end of the fixed shaft 2 is connected to the fixed table 1 through the fixed seat 201. Use four hexagon socket head cap bolts 202 to tighten symmetrically, ensuring that the coaxiality between the fixed shaft 2 and the fixed table 1 is less than or equal to 0.01mm.

[0044] Place the rotary table 3 on the fixed platform 1, ensuring that the rotary table 3 fits onto the fixed shaft 2, so that the rotating disk 301 at the lower end of the rotary table 3 is embedded in the rotating groove 101 of the fixed platform 1. The clearance between the rotating disk 301 and the rotating groove 101 is 0.05mm, ensuring that the rotary table 3 can rotate freely without radial wobble. Then, install two locking nuts 204 sequentially on the thread at the upper end of the fixed shaft 2. First, pre-tighten the first nut, rotate the rotary table 3 to test the axial clearance, ensuring that the rotary table 3 can rotate freely. Then, adjust the second nut to allow the axial clearance to form a double-nut locking method, preventing the two locking nuts 204 from loosening during frequent rotation of the upper and lower rotary tables 3. Finally, use countersunk bolts 206 to fix the dust cover 205 to the top of the rotary table 3 to prevent machining debris from entering the rotary mechanism.

[0045] Place the positioning sleeve 401 onto the positioning pin 4, with the upper end of the positioning pin 4 abutting against the baffle 402. Maintain a 2mm radial gap between the inner hole of the positioning sleeve 401 and the outer circle of the positioning pin 4. Install a retaining ring 403 at the lower end of the positioning sleeve 401 for limiting the movement. Next, pre-install a flange nut 404 on the threaded part of the upper end of the positioning pin 4, and insert a rotating rod 405 into the through hole at the upper end of the positioning pin 4. Screw the threaded part of the lower end of the positioning pin 4 into the positioning hole 103 of the fixed platform. After manual pre-tightening, rotate the rotating rod 405 to lower the positioning sleeve 401 until the conical surface of the positioning sleeve 401 is fully engaged with the fixed conical hole formed by the positioning hole 103 of the fixed platform and the positioning hole 303 of the rotary table. At this point, the coaxiality error of the center lines of the positioning holes of the fixed platform 1 and the rotary table 3 is less than or equal to 0.005mm. Tighten the flange bolt 202 with a wrench to achieve rigid locking of the fixed platform 1 and the rotary table 3.

[0046] When machining two symmetrical parallel sides of a workpiece on a horizontal milling machine, first align and tighten the fixed table 1, then press the rotary sleeve 203 into the inner hole 302 of the rotary table, then insert the fixed shaft 2, and install two locking nuts 204 in sequence, finally fixing the dust cover 205. Next, place the casting blank face down on the upper surface of the rotary table 3, and use the T-slot 304 and clamping assembly to fix the workpiece to be machined, ensuring that the two symmetrical parallel sides of the workpiece are perpendicular to the upper surface of the rotary table 3. Then, insert the positioning sleeve 401 into the positioning pin 4, install the snap ring 403 at the lower end of the positioning pin 4, assemble the flange nut 404 at the top, and then assemble the rotating rod 405. Align the tapered holes of the fixed table 1 and the rotary table 3, screw in the screw, and rotate the rotating rod 405 to make the tapered surfaces fit together, finally locking the flange nut 404. After ensuring the positioning and clamping devices are locked, start the horizontal milling machine and mill the first side of the two symmetrical and parallel sides of the casting. After the first side is machined, loosen the flange nut 404, pull out the positioning and clamping devices on the left and right sides of the rotary table 3, manually rotate the rotary table 3180° along the horizontal plane, and the rotating disk 301 rotates smoothly in the rotating groove 101. Reinsert the positioning pin 4 and re-lock the positioning and clamping devices on the left and right sides, then machine the second side. After the machining is completed, remove the workpiece.

Claims

1. A rotary processing device for use in a horizontal milling machine, characterized by comprising: It comprises a fixed platform (1) assembly, a rotary platform (3) and a positioning and pressing device; The fixed platform (1) assembly comprises a fixed platform (1), the upper end surface of which is a horizontal surface, a rotating groove (101) is formed in the top surface of the fixed platform (1), the rotating groove (101) is circular, the side wall of the rotating groove (101) is perpendicular to the bottom surface of the rotating groove (101), and the bottom surface of the rotating groove (101) is parallel to the upper end surface of the fixed platform (1), a fixed platform inner hole (102) is arranged in the center of the rotating groove (101), the fixed platform inner hole (102) is vertically arranged in the fixed platform (1) and penetrates the fixed platform (1), a fixed shaft (2) is inserted into the fixed platform inner hole (102), a fixed seat (201) is arranged at the lower end of the fixed shaft (2), the fixed seat (201) is connected to the fixed platform (1) by means of fasteners, and fixed platform positioning holes (103) are symmetrically arranged at the left and right ends of the fixed platform (1); The rotary platform (3) is arranged on the fixed platform (1), the upper end surface of the rotary platform (3) is parallel to the lower end surface, a rotating disc (301) is fixedly connected to the lower end surface of the rotary platform (3), the rotating disc (301) is clamped in the rotating groove (101), the rotating disc (301) is tightly attached to the rotating groove (101), the rotating disc (301) can rotate in the rotating groove (101), an inner hole (302) is arranged on the rotary platform (3), the fixed platform inner hole (102) and the inner hole (302) are coaxial, rotary platform positioning holes (303) are symmetrically arranged on the left and right sides of the rotary platform (3), the rotary platform positioning holes (303) are coaxial with the fixed platform positioning holes (103), and a T-shaped groove (304) is arranged on the upper end surface of the rotary platform (3) for connecting components for fixing workpieces; The positioning and pressing device comprises a positioning column (4), the lower end of the positioning column (4) is provided with a thread, the positioning column (4) penetrates the rotary platform positioning holes (303) on the left and right sides of the rotary platform (3), and the lower end of the positioning column (4) is screwed into the fixed platform positioning holes (103) for locking the fixed platform (1) and the rotary platform (3).

2. A swivel processing device for use in a horizontal milling machine according to claim 1, characterized in that The rotary table positioning hole (303) and the fixed table positioning hole (103) form a fixed taper hole, the inner wall of the rotary table positioning hole (303) and the inner wall of the fixed table positioning hole (103) belong to the same taper surface, the lower end diameter of the rotary table positioning hole (303) is equal to the upper end diameter of the fixed table positioning hole (103), the rotary table positioning hole (303) and the fixed table positioning hole (103) are located on the same axis, a positioning sleeve (401) is sleeved on the positioning column (4), the side surface of the positioning sleeve (401) is a taper surface, the positioning sleeve (401) is inserted into the positioning taper hole, the positioning sleeve (401) and the fixed taper hole are in interference fit, the inner wall of the positioning sleeve (401) is directly provided with a gap with the positioning column (4), a baffle (402) is arranged on the positioning column (4), the upper end of the positioning sleeve (401) abuts against the lower end surface of the baffle (402), a clamping spring (403) is sleeved on the positioning column (4), and the clamping spring (403) is arranged at the lower end of the positioning sleeve (401) and is used for limiting the positioning sleeve (401). The positioning sleeve (401) is clamped in the fixed taper hole formed by the rotary table positioning hole (303) and the fixed table positioning hole (103).

3. The swiveling processing device for use in a horizontal milling machine according to claim 2, wherein The upper end of the positioning column (4) is provided with a thread, and a nut is screwed on the upper end of the positioning column (4) to further lock the fixed table (1) and the rotary table (3).

4. The swivel processing device for use in a horizontal milling machine according to claim 3, wherein A through hole is formed in the upper end of the positioning column (4) in the horizontal direction, a rotating rod (405) is inserted into the through hole, and the rotating rod (405) is used for pre-installing the positioning sleeve (401) into the fixed taper hole.

5. The swivel processing device for use in a horizontal milling machine according to claim 4, wherein A rotary sleeve (203) is arranged between the rotary table inner hole (302) and the fixed shaft (2), the rotary sleeve (203) and the rotary table inner hole (302) form an interference fit, and the rotary sleeve (203) is used for further limiting the rotary table (3). The upper end of the fixed shaft (2) is provided with a screw hole, and the rotary sleeve (203) and the fixed shaft (2) are connected through a fastener.

6. The swivel processing device for use in a horizontal milling machine according to claim 5, wherein The upper end of the fixed shaft (2) is provided with a thread, and a locking nut (204) is screwed on the upper end of the fixed shaft (2) to fix the rotary sleeve (203).

7. The swivel processing device for use in a horizontal milling machine according to claim 6, wherein The locking nut (204) is provided with two.

8. The swivel processing device for use in a horizontal milling machine according to claim 7, wherein A dust cover (205) is arranged at the top end of the fixed shaft (2), the dust cover (205) and the fixed shaft (2) are connected through a fastener, and the dust cover (205) is used for preventing machining debris from entering the rotary mechanism.

9. The swivel processing device for use in a horizontal milling machine according to claim 8, wherein A screw hole is formed in the center of the top end of the fixed shaft (2), a through hole is formed in the center of the dust cover (205), and the dust cover (205) is connected with the fixed shaft (2) through a countersunk head bolt (206).

10. The swivel processing device for use in a horizontal milling machine according to claim 9, wherein Side grooves (104) are arranged on the left and right sides of the fixed table (1), and the fixed table (1) is fixedly connected to a horizontal milling machine.

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