Horizontal rotary positioning device for propeller machining

Abstract

The utility model relates to a horizontal rotary positioning device for propeller processing, which comprises a left lathe bed, a headstock, a right lathe bed, a tailstock and a center frame, the headstock and the left center frame are arranged above the left lathe bed, and the tailstock and the right center frame are arranged above the right lathe bed. The left center frame and the right center frame are used for supporting the weight of a propeller tool propeller shaft, the headstock can achieve the A-axis rotation and positioning functions of the propeller tool propeller shaft, and the tailstock can axially abut against the propeller tool propeller shaft. The horizontal rotary positioning device for propeller machining meets the clamping requirements of propellers of three different specifications. Key points and protection points of the propeller horizontal type rotary positioning device are structural design of a main body of the propeller horizontal type rotary positioning device, working modes of position adjustment and control systems of all the devices, design and operation modes of a safety protection mechanism, and overall integration level and operation convenience of equipment.

Description

Technical Field

[0001] This utility model relates to the field of propeller processing technology, specifically to a horizontal rotary positioning device for propeller processing. Background Technology

[0002] As a core component of marine propulsion systems, the quality of the propeller's machining directly affects the propulsion system's performance. Propeller blades are three-dimensional helical surfaces with long cantilevered diameters of rotation, thin blades, and are prone to deformation.

[0003] Existing propeller machining methods employ vertical clamping, which results in a mismatch between the vertical machining configuration and the horizontal installation orientation during actual propeller use. Consequently, the deformation of the blades due to gravity during vertical machining affects the profile of the blade's three-dimensional surface, thus impacting the propeller's performance. This paper proposes a horizontal rotary positioning device for propeller machining to address these technical issues and ensure consistency between the machining configuration and the actual installation configuration during use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a horizontal rotary positioning device for propeller machining, which keeps the propeller machining state consistent with the installation state during actual use, thereby improving the machining accuracy of the propeller and enhancing the performance indicators of the thruster.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a horizontal rotary positioning device for propeller machining, comprising a left bed and a right bed. A headstock and a left center frame are disposed above the left bed, and a tailstock and a right center frame are disposed above the right bed.

[0006] The headstock is equipped with a spindle unit, and the front end of the spindle unit is equipped with a disc. The spindle unit is rotated and positioned around axis A under the drive of the main transmission mechanism.

[0007] Furthermore, the main transmission mechanism is that the main spindle motor sequentially passes through a planetary reducer, a gear, and a gear ring to realize the rotation of the main spindle unit. The main spindle motor, planetary reducer, and gear are all provided in two sets, and a double gear backlash elimination mechanism is adopted.

[0008] Furthermore, the disc is provided with a front center and an end face key. The front center is centered with the left end tapered hole of the propeller tool shaft, and the end face key is wedged tightly with the keyway of the propeller tool shaft by a wedge block to realize the rotational positioning of the propeller tool shaft.

[0009] Furthermore, the spindle unit is provided with a gear ring, and the gear ring is circumferentially provided with four sets of disc brakes to achieve clamping and braking of the spindle unit.

[0010] The tailstock is equipped with a sleeve, which is moved left and right along the X-axis of the tailstock under the drive of the X-axis transmission mechanism.

[0011] Furthermore, the X-axis transmission mechanism is a servo motor that drives the movement of the sleeve through a worm gear right-angle reducer and a T-type lead screw pair in sequence.

[0012] Furthermore, the sleeve is provided with a rotary rear center at the front end, and the rear center is centered with the tapered hole at the right end of the propeller tool shaft. The X-axis movement of the sleeve realizes the axial clamping of the propeller tool shaft.

[0013] The central frame consists of two sets, arranged on the left and right sides, used to support the weight of the propeller shaft of the propeller tooling.

[0014] Furthermore, the center frame is a servo center frame, which can achieve vertical movement along the Z-axis to meet the clamping requirements of three different specifications of propellers.

[0015] Furthermore, the central frame is provided with a central frame base, and a sliding saddle is provided in the middle of the central frame base. The sliding saddle moves vertically up and down along the Z-axis under the drive of the Z-axis transmission mechanism.

[0016] Furthermore, the slide saddle is equipped with two sets of rolling units for supporting the propeller shaft of the propeller tooling.

[0017] Furthermore, the Z-axis transmission mechanism consists of a set of servo motors that synchronously drive two sets of worm gear right-angle reducers and two sets of T-type lead screw pairs through right-angle reducers, thereby enabling the saddle to move vertically up and down along the Z-axis.

[0018] Compared with the prior art, this utility model provides a horizontal rotary positioning device for propeller processing, which has the following advantages:

[0019] Horizontal installation machining of propellers ensures that the machined state of the propeller is consistent with the actual installation state during use, reducing the impact of the gravity deformation of the propeller blades on the three-dimensional curved surface profile of the propeller. In addition, horizontal installation machining allows the chips to fall naturally under the action of gravity, reducing secondary wear of the chips on the blades and cutting edges, and improving the machining accuracy of the propeller. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the horizontal rotary positioning device for propeller processing proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the left bed structure of the horizontal rotary positioning device for propeller machining proposed in this utility model.

[0022] Figure 3 A schematic diagram of the headstock structure of the horizontal rotary positioning device for propeller machining proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the main transmission mechanism of the horizontal rotary positioning device for propeller processing proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the right bed structure of the horizontal rotary positioning device for propeller machining proposed in this utility model.

[0025] Figure 6 A schematic diagram of the tailstock structure of the horizontal rotary positioning device for propeller machining proposed in this utility model.

[0026] Figure 7 This is a schematic diagram of the central frame structure of the horizontal rotary positioning device for propeller processing proposed in this utility model.

[0027] In the diagram: 1. Left bed; 2. Right bed; 3. Headstock; 4. Tailstock; 5. Center rest; 6. Propeller tooling shaft; 7. Main drive mechanism; 8. Spindle unit; 9. Face plate; 10. Spindle motor; 11. Planetary reducer; 12. Gear; 13. Gear ring; 14. Lead center; 15. End face key; 16. Encoder; 17. Disc brake; 18. Sleeve; 19. X-axis drive mechanism; 20. Rear center; 21. Servo motor; 22. Worm gear right-angle reducer; 23. T-type lead screw pair; 24. Center rest base; 25. Slide saddle; 26. Z-axis drive mechanism; 27. Sliding guide rail; 28. Rolling unit; 29. ​​Tapered roller bearing; 30. Double row cylindrical roller bearing; 31. Single row cylindrical roller bearing; 32. Wedge block; 33. Right-angle reducer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 The propeller machining horizontal rotary positioning device includes a left bed 1 and a right bed 2, positioned on the left and right sides of the propeller tooling shaft 6, respectively. A headstock 3 and a left center support 5-a are mounted above the left bed 1, and a tailstock 4 and a right center support 5-b are mounted above the right bed 2. The rotation axis of the left spindle unit 8 coincides with the axis of the right sleeve 18.

[0030] In this embodiment, the left center frame 5-a and the right center frame 5-b are used to support the weight of the propeller tooling shaft 6, and the vertical movement of the Z-axis ensures that the axis of the propeller tooling shaft 6 coincides with the axis of the main shaft unit 8.

[0031] Please see Figure 2 The left end tapered hole of the propeller tooling shaft 6 is centered with the front center 14, and the end face key 15 is wedged with the left end keyway of the propeller tooling shaft 6 by the wedge block 32 to realize torque transmission. The propeller tooling shaft 6 is rotated and positioned around the A axis.

[0032] Please see Figure 3-4 The headstock 3 is equipped with a main drive mechanism 7 and a spindle unit 8. A face plate 9 is installed at the front end of the spindle unit 8. A front center 14 and two sets of end face keys 15 are installed at the front end of the face plate 9. An encoder 16 is installed at the rear end of the spindle unit 8 to detect and provide feedback on the rotational positioning angle error of the spindle unit 8.

[0033] Among them, the main transmission mechanism 7 adopts a double gear backlash elimination mechanism. Two sets of main shaft motors 10 drive the gear ring 13 through the planetary reducer 11 and gear 12 in sequence to realize the rotational positioning of the main shaft unit 8. During positioning, the double gear backlash elimination mechanism is adopted, and the two sets of gears 12 mesh with the gear ring 13 in opposite directions to eliminate the reverse angle error caused by the gear meshing backlash in the transmission chain of the main transmission mechanism 7.

[0034] The main spindle unit 8 employs a two-set bearing configuration. The front bearing consists of two sets of high-rigidity tapered roller bearings 29 mounted back-to-back, capable of withstanding axial and radial forces. The rear bearing consists of a combination of a double-row cylindrical roller bearing 30 and a single-row cylindrical roller bearing 31, positioned on both sides of the gear ring 13, to bear the radial force transmitted by the torque of the main drive mechanism 7.

[0035] Among them, four sets of disc brakes 17 are arranged circumferentially on the gear ring 13 for clamping and braking after the spindle unit 8 is rotated and positioned. The disc brakes 17 are hydraulic cylinder clamping brakes.

[0036] Please see Figure 5-6 The sleeve 18 is equipped with a rotary rear center 20 at its front end. The right end tapered hole of the propeller tooling shaft 6 is centered with the rear center 20. The sleeve 18 moves along the X-axis under the drive of the Z-axis transmission mechanism 26 to achieve axial clamping of the propeller tooling shaft 6.

[0037] The Z-axis transmission mechanism 26 uses a servo motor 21 to drive a T-type lead screw pair 23 through a worm gear right-angle reducer 22, so that the sleeve 18 can move left and right along the tailstock 4 along the X-axis. The T-type lead screw pair has a self-locking function, which can ensure that there is no axial movement after the propeller tooling shaft 6 is axially tightened.

[0038] Please see Figure 7 The inner cavity of the central frame base 24 is provided with sliding guide rails 27, and the slide saddle 25 moves vertically up and down along the sliding guide rails 27 under the drive of the Z-axis transmission mechanism 26.

[0039] The Z-axis transmission mechanism consists of a set of servo motors 21 that synchronously drive two sets of worm gear reducers 22 and T-type lead screw pairs 23 via right-angle reducers 33.

[0040] Among them, two sets of rolling units 28 are installed on the sliding saddle 25 to support the journal of the propeller tooling shaft 6.

[0041] The above technical solution enables the clamping, rotation, and positioning of the propeller shaft 6 in the propeller fixture. The specific steps are as follows:

[0042] Furthermore, the two sets of servo center frames 5 are raised to the upper limit position of the Z axis, and the sleeve 18 is retracted to the lower limit position of the X axis.

[0043] Furthermore, the propeller shaft 6 of the propeller tooling is hoisted and lowered onto the rolling unit 28 of the center frame 5.

[0044] Furthermore, the two sets of servo center frames 5 fall synchronously until the axis of the propeller tooling shaft 6 coincides with the rotation axis of the main shaft unit 8.

[0045] Furthermore, by moving the sleeve 18 along the X-axis, the propeller tooling shaft 6 is axially tightened. During the process, the propeller tooling shaft 6 is lifted with the help of a crane to reduce friction.

[0046] Furthermore, the left end tapered hole of the propeller tooling shaft 6 is centered with the front center 14, and the end face key 15 is wedged tightly with the left end keyway of the propeller tooling shaft 6 by the wedge block 32.

[0047] Furthermore, driven by the main transmission mechanism 7, the propeller tooling shaft 6 is rotated and positioned to meet the adjustment of the propeller blade processing posture.

[0048] The beneficial effects of the above embodiments are as follows:

[0049] The horizontal rotary positioning device for propeller machining meets the flexible clamping requirements of three different specifications of propellers; the horizontal installation machining ensures that the machining state of the propeller is consistent with the actual installation state during use, reducing the impact of the gravity deformation of the propeller blades on the three-dimensional curved surface profile of the propeller; in addition, the horizontal installation machining allows the chips to fall naturally under the action of gravity, reducing the secondary wear of the chips on the blades and cutting edges, and improving the machining accuracy of the propeller.

[0050] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal rotary positioning device for propeller machining, characterized in that: It includes a left bed (1) and a right bed (2). A headboard box (3) and a left center frame (5-a) are provided above the left bed (1), and a tailstock (4) and a right center frame (5-b) are provided above the right bed (2).

2. The horizontal rotary positioning device for propeller processing according to claim 1, characterized in that: The headstock (3) includes a main drive mechanism (7), a spindle unit (8), and a disc (9).

3. The horizontal rotary positioning device for propeller processing according to claim 2, characterized in that: The main drive mechanism (7) includes a spindle motor (10). The spindle motor (10) is driven by a planetary reducer (11), a gear (12) and a gear ring (13) in sequence to realize the rotation and positioning of the spindle unit (8) around the A-axis. The main drive mechanism (7) consists of two sets and adopts a double gear backlash elimination mechanism to eliminate the reverse angle error of the main drive system.

4. The horizontal rotary positioning device for propeller processing according to claim 2, characterized in that: The spindle unit (8) is equipped with a flower plate (9) at the front end. The flower plate (9) is provided with a front center (14) and two sets of end face keys (15). The spindle unit (8) is equipped with an encoder (16) at the rear end for detecting and feeding back the rotation angle positioning of the spindle unit (8).

5. The horizontal rotary positioning device for propeller processing according to claim 3, characterized in that: The gear ring (13) is fixed on the main spindle unit (8). Disc brakes (17) are distributed circumferentially on the gear ring (13) for clamping and braking after the main spindle unit (8) is rotated and positioned.

6. The horizontal rotary positioning device for propeller processing according to claim 1, characterized in that: The tailstock (4) includes a sleeve (18) and an X-axis transmission mechanism (19). The propeller processing horizontal rotary positioning device is characterized in that: the sleeve (18) moves left and right along the X-axis under the drive of the X-axis transmission mechanism (19), and the front end of the sleeve (18) is provided with a rotary rear center (20).

7. The horizontal rotary positioning device for propeller processing according to claim 6, characterized in that: The X-axis transmission mechanism (19) includes a servo motor (21), which drives a T-type lead screw pair (23) through a worm gear right angle reducer (22) to achieve left and right movement and positioning of the sleeve (18) along the X-axis.

8. The horizontal rotary positioning device for propeller processing according to claim 1, characterized in that: The center frame (5) includes a left center frame (5-a) and a right center frame (5-b). The center frame (5) includes a center frame base (24), a slide saddle (25), and a Z-axis transmission mechanism (26). The slide saddle (25) is provided with two sets of rolling units (28). The slide saddle (25) moves vertically up and down along the Z-axis under the drive of the Z-axis transmission mechanism (26) along the sliding guide rail (27) in the middle of the center frame base (24), which can meet the clamping requirements of propeller shafts (6) of three different specifications.

9. The horizontal rotary positioning device for propeller processing according to claim 8, characterized in that: The Z-axis transmission mechanism (26) includes a servo motor (21), which drives two sets of worm gear right-angle reducers (22) and T-type lead screw pairs (23) synchronously through a right-angle reducer (33) to realize the vertical movement of the slide saddle (25) along the Z-axis.

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