Crankcase blank turnover device

Abstract

The invention relates to the technical field of machining and overturning, and discloses a crankcase blank overturning device which comprises a device base, supporting blocks are fixedly installed at one end of the top of the device base at equal intervals, and supporting plates are installed at the tops of the opposite sides of every two adjacent supporting blocks. Supporting blocks are installed at one end of the top of the device base, a carrying lifting frame located between the supporting blocks is installed at the top of the device base, fixed blocks are fixedly installed at the other end of the top of the device base at equal intervals, a round through hole is formed in the middle of each fixed block, two movable rings are installed in each round through hole, and two plate blocks are fixedly and symmetrically installed between the interiors of the two movable rings; clamping plates are mounted on the opposite sides of the two plate blocks, and protective rubber clamping pads are fixedly mounted at one ends of the opposite sides of the two clamping plates; the crankcase blank overturning device has the functions of lifting, moving, clamping, fixing and overturning, a crankcase can be conveniently overturned at any time in the machining process, and therefore the crankcase machining efficiency is effectively improved, and the crankcase machining speed is effectively increased.

Description

Technical Field

[0001] The invention belongs to the technical field of machining turnover, and in particular relates to a crankcase blank turnover device. Background Art

[0002] The crankcase blank refers to the preliminary formed metal component formed by casting or forging during the manufacturing process of the crankcase; the crankcase is an important component of the engine, mainly used to support the crankshaft and contain engine oil, and play a role in lubrication and cooling; the blank usually refers to the part that has not yet undergone final processing, with a rough surface, and the shape and size may be different from the final product. In the subsequent processing process, the blank will undergo machining, heat treatment, surface treatment and other processes to finally form a crankcase that meets the design requirements.

[0003] The crankcase blank needs to be processed on each surface during the processing, and the crankcase needs to be turned over when processing each surface. Since the crankcase is heavy, the turning operation is inconvenient and there are safety hazards. The traditional turning method is to use a lifting equipment for turning operation, which is cumbersome and reduces the efficiency and speed of crankcase processing. Therefore, in view of the above problems, it is necessary to design a crankcase blank turning device. Summary of the invention

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a crankcase blank turning device, comprising a device base, a support block is fixedly installed at one end of the top of the device base at an equal distance, a rotatable and adjustable support plate is installed on the top of the opposite sides of two adjacent support blocks, a supporting lifting frame is installed between the support blocks on the top of the device base, a fixed block is fixedly installed at an equal distance on the other end of the top of the device base, a circular through hole is opened in the middle of the fixed block, two rotatable and adjustable movable rings are installed inside the circular through hole, two plates are symmetrically fixedly installed between the insides of the two movable rings, telescopic and adjustable splints are installed on opposite sides of the two plates, and protective rubber clamping pads are fixedly installed on one end of the opposite sides of the two splints.

[0005] Preferably, vertical inner grooves are provided on the tops of the opposite sides of two adjacent support blocks, and the interiors of the vertical inner grooves are rotatably connected to a rotating shaft, and the support plates are fixedly connected to the surface of the rotating shaft. Both ends of the rotating shaft extend to the outside of the two ends of the support blocks and are fixedly installed with adjustment gears, so that the support plates can be effectively adjusted.

[0006] Preferably, the supporting and lifting frame includes two main supporting beams and several middle supporting plates. The several middle supporting plates are fixedly installed at equal distances between the two main supporting beams. The support block is located between two adjacent middle supporting plates. Ball bearings are fixedly installed at equal distances on the top of the middle supporting plates. Two fixed blocks are fixedly installed on the bottom of the two main supporting beams, so that the rough crankcase can be effectively supported, lifted and moved.

[0007] Preferably, a plurality of fixed vertical plates are fixedly installed on opposite sides of the two main support beams, and a vertical rack matching and transmission-engaged with the adjusting gear is fixedly installed on one side of the fixed vertical plates, thereby enabling effective transmission adjustment.

[0008] Preferably, two horizontal slide grooves are symmetrically opened at one end of the top of the base of the device, and two bidirectional threaded rods A are rotatably installed inside the two horizontal slide grooves. Two threaded movable sleeves A are symmetrically threadedly connected on the surfaces of the two bidirectional threaded rods A, and the four threaded movable sleeves A are rotatably connected to the four fixed blocks respectively with lifting adjustment rods.

[0009] Preferably, one end of the two bidirectional threaded rods A extends to the outside of one end of the device base and is fixedly installed with a sprocket A, a chain A is installed between the two sprockets A, and the other end of the device base is installed with a forward and reverse motor A connected to the other end of one of the bidirectional threaded rods A, so that the supporting lifting frame can be effectively raised and lowered.

[0010] Preferably, two circular grooves are provided inside the circular through hole, and two movable rings are respectively installed inside the two circular grooves. The outer circumferential surfaces of the two movable rings are fixedly installed with external gear rings, and the interiors of the two circular grooves are both annularly and equidistantly rotated with transmission gears, and the transmission gears are meshed and connected with the external gear rings.

[0011] Preferably, a connecting shaft is connected between the axes of two opposite transmission gears inside the two ring grooves, and a forward and reverse motor B is installed on one side of the fixed block. The output end of the forward and reverse motor B is fixedly connected to the output end of the forward and reverse motor B, thereby effectively driving the two movable circles, two plates, two splints and two protective rubber clamping pads to perform synchronous rotation adjustment.

[0012] Preferably, mounting grooves are provided on opposite sides of the two plates, and bidirectional threaded rods B are rotatably installed inside the two mounting grooves. Two threaded moving blocks are symmetrically threadedly connected to the surface of the bidirectional threaded rods B, and telescopic adjustment rods are rotatably connected to both ends of the two threaded moving blocks. Fixed connecting blocks are connected between one ends of the four telescopic adjustment rods on one side of the same plate, and the two fixed connecting blocks are respectively fixedly connected to the two splints.

[0013] Preferably, one end of the two bidirectional threaded rods B extends to the outside of one end of the two plates and is fixedly connected to a sprocket B, a chain B is installed between the two sprockets B, a forward and reverse motor C is installed at the other end of one of the plates, and the output end of the forward and reverse motor C is fixedly connected to the other end of one of the bidirectional threaded rods B, thereby effectively being able to adjust the relative movement of the two splints.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) During operation, the crankcase blank turning device has the functions of lifting, moving, clamping, fixing and turning by providing a device base, a support block, a support plate, a supporting lifting frame, a fixed block, a round through hole, a movable ring, a plate, a clamping plate and a protective rubber clamping pad. The crankcase blank turning device can conveniently turn over the crankcase at any time during the processing, thereby effectively improving the efficiency and speed of crankcase processing. The turning device is easy to use, simple to operate, and safe and reliable to turn over. At the same time, the turning device has a simple structural design, is easy to use, and has a stable and reliable turning operation. Its performance can meet the use requirements of crankcase blank processing;

[0016] (2) By starting the forward and reverse motors, one of the two-way threaded rods A is rotated. The rotation of one of the two-way threaded rods A drives the other of the two-way threaded rods A to rotate through two sprockets A and chains A. The rotation of the two two-way threaded rods A causes the two threaded moving sleeves A on their surfaces to move in opposite directions. The relatively moving threaded moving sleeves A push the two main support beams upward through the lifting adjustment rods. The upward movement of the two main support beams drives a number of middle support plates to move upward synchronously.

[0017] The upward movement of the two main support beams drives all the middle support plates to move upward. At the same time, the upward movement of the two main support beams drives the fixed vertical plate and the vertical rack to move upward. The upward movement of the vertical rack drives the adjustment gear to rotate. The rotation of the adjustment gear drives the rotation shaft and the support plate to rotate. Finally, all the support plates are rotated 90 degrees and stored inside the vertical inner groove of the slot, so that the middle support plate located between the support blocks can be effectively moved upward.

[0018] The two ends of the support frame are moved horizontally by the rolling of the ball bearings, so that one end of the support frame moves between the two protective rubber clamping pads; the two relatively moving clamping plates drive the two protective rubber clamping pads to clamp and fix one end of the support frame; the main support frame and the middle support frame are then lowered, and the two plates, the two clamping plates, the two protective rubber clamping pads and the support frame are rotated by the two rotatable movable rings, so as to flip the support frame; after the flipping is completed, the main support frame and the middle support frame are raised again, so that the support frame is located between the tops of the lower support plates; the support frame is moved again by the ball bearings, and the main support frame is lowered, so that the flipped support frame finally falls on a platform composed of multiple support plates and a plurality of support blocks;

[0019] (3) By starting the forward and reverse motor B, the connecting shaft is rotated. The rotation of the connecting shaft will drive the two transmission gears connected to it to rotate. The rotation of the two transmission gears will transmit the two outer gear rings through other rotatable transmission gears inside the two ring grooves. The rotation of the two outer gear rings will drive the movable rings to rotate. The rotation of the two movable rings will drive the two plates, two clamping plates and two protective rubber clamping pads to rotate synchronously, thereby flipping the blank crankcase between the two clamping plates and the two protective rubber clamping pads. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached picture:

[0022] Figure 1 It is a schematic structural diagram of the crankcase blank turning device of the present invention;

[0023] Figure 2 For the present invention Figure 1 A partial cross-sectional view of the structure Figure 1 ;

[0024] Figure 3 For the present invention Figure 2 Schematic diagram of the local structure;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of a partial cross-sectional structure;

[0026] Figure 5 For the present invention Figure 1 A partial cross-sectional view of the structure Figure 2 ;

[0027] Figure 6 For the present invention Figure 5 The local structure of Figure 1 ;

[0028] Figure 7 For the present invention Figure 5 The local structure of Figure 2 ;

[0029] In the figure: 1. Device base; 2. Support block; 3. Support plate; 4. Support lifting frame; 5. Fixed block; 6. Round hole; 7. Movable ring; 8. Plate; 9. Clamp; 10. Protective rubber clamping pad; 11. Vertical inner groove; 12. Rotating shaft; 13. Adjusting gear; 15. Main support beam; 16. Middle support plate; 17. Ball bearing; 18. Fixed block; 19. Fixed vertical plate; 20. Vertical rack; 21. Horizontal slide; 22. Bidirectional threaded rod A ; 23. Threaded moving sleeve A; 24. Lifting adjustment rod; 25. Sprocket A; 26. Chain A; 27. Forward and reverse motor A; 28. Ring groove; 29. ​​External gear ring; 30. Transmission gear; 31. Linking shaft; 32. Forward and reverse motor B; 33. Installation groove; 34. Bidirectional threaded rod B; 35. Threaded moving block; 36. Telescopic adjustment rod; 37. Fixed connection block; 38. Sprocket B; 39. Chain B; 40. Forward and reverse motor C. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1 to 7The present invention includes a device base 1, a support block 2 is fixedly installed at one end of the top of the device base 1 at an equal distance, and a rotatable and adjustable support plate 3 is installed on the top of the opposite sides of two adjacent support blocks 2. The two adjacent support plates 3 can be spliced ​​into a support shielding plate flush with the top of the support block 2. Through the splicing of multiple support plates 3 and a number of support blocks 2, a platform for placing a rough crankcase can be effectively formed. A supporting lifting frame 4 located between the support blocks 2 is installed on the top of the device base 1, and the supporting lifting frame 4 can be adjusted to rise and fall. A fixed block 5 is fixedly installed at the other end of the top of the device base 1 at an equal distance, a circular through hole 6 is opened in the middle of the fixed block 5, and two rotatable and adjustable movable rings 7 are installed inside the circular through hole 6. Two plates 8 are fixedly installed symmetrically between the insides of the two movable rings 7, and telescopically adjustable clamps 9 are installed on the opposite sides of the two plates 8. Protective rubber clamping pads 10 are fixedly installed on one end of the opposite sides of the two clamps 9. The two relatively movable clamps 9 can clamp and fix the rough crankcase through the protective rubber clamping pads 10.

[0032] The crankcase blank flipping device has the functions of lifting, moving, clamping and fixing and flipping. It can conveniently flip the crankcase at any time during the processing, thereby effectively improving the efficiency and speed of crankcase processing. The flipping device is easy to use, simple to operate, and safe and reliable to flip. At the same time, the flipping device has a simple structural design, is easy to use, and the flipping operation is stable and reliable. The performance it has can meet the use requirements of crankcase blank processing.

[0033] Embodiment 2, on the basis of embodiment 1, vertical inner grooves 11 are provided at the tops of the opposite sides of two adjacent support blocks 2, and the interiors of the vertical inner grooves 11 are rotatably connected with rotating shafts 12, and the support plates 3 are fixedly connected to the surface of the rotating shafts 12, and both ends of the rotating shafts 12 extend to the outside of the two ends of the support blocks 2 and are fixedly installed with adjustment gears 13, so that the support plates 3 can be effectively adjusted; the supporting lifting frame 4 includes two main supporting beams 15 and a plurality of middle supporting plates 16, and the plurality of middle supporting plates 16 are fixedly installed on the two main supporting beams at equal distances. 15, the support block 2 is located between two adjacent middle supporting plates 16, and balls 17 are fixedly installed on the top of the middle supporting plates 16 at equal distances. Two fixed blocks 18 are fixedly installed on the bottom of the two main supporting beams 15, so that the rough crankcase can be effectively supported, lifted and moved. Several fixed vertical plates 19 are fixedly installed on the opposite sides of the two main supporting beams 15, and one side of the fixed vertical plates 19 is fixedly installed with a vertical rack 20 that matches and meshes with the adjusting gear 13, so that the transmission adjustment can be effectively performed.

[0034] When the rough crankcase is processed, it is placed on a platform composed of multiple support plates 3 and several support blocks 2. When the rough crankcase needs to be turned over, the upward movement of the two main support beams 15 drives all the middle support plates 16 to move upward. At the same time, the upward movement of the two main support beams 15 will drive the fixed vertical plate 19 and the vertical rack 20 to move upward. The upward movement of the vertical rack 20 will drive the adjustment gear 13 to rotate. The rotation of the adjustment gear 13 will drive the rotation shaft 12 and the support plate 3 to rotate, and finally all the support plates 3 will rotate ninety degrees and receive the inside of the vertical inner groove 11 of the groove, so that the middle support plate 16 located between the support blocks 2 can be effectively moved upward.

[0035] After that, the vertical rack 20 is separated from the adjusting gear 13, and the two main support beams 15 can effectively lift the rough crankcase away from the top of the support block 2 through all the middle supporting plates 16, and then the rough crankcase is horizontally moved by the rolling of the ball 17, so that one end of the rough crankcase moves between the two protective rubber clamping pads 10; then the two relatively moving clamping plates 9 drive the two protective rubber clamping pads 10 to clamp and fix one end of the rough crankcase, and then the main support beams 15 and the middle supporting plates 16 are lowered, and then The two plates 8, the two clamping plates 9, the two protective rubber clamping pads 10 and the rough crankcase are driven to rotate by two rotatable movable rings 7, so as to flip the rough crankcase. After the flipping is completed, the main support beam 15 and the middle supporting plate 16 are adjusted upward again so that the rough crankcase is located between the tops of the lower supporting plates 16, and then the rough crankcase is moved again by the ball bearings 17, and then the main support beam 15 is lowered so that the flipped rough crankcase finally falls on a platform composed of multiple support plates 3 and a number of support blocks 2.

[0036] Two horizontal slide grooves 21 are symmetrically provided at one end of the top of the device base 1, and two bidirectional threaded rods A22 are rotatably installed inside the two horizontal slide grooves 21. Two threaded movable sleeves A23 are symmetrically threadedly connected to the surfaces of the two bidirectional threaded rods A22. A lifting adjustment rod 24 is rotatably connected between the four threaded movable sleeves A23 and four fixed blocks 18 respectively; one end of the two bidirectional threaded rods A22 extends to the outside of one end of the device base 1 and is fixedly installed with a sprocket A25, and a chain A26 is installed between the two sprockets A25. A forward and reverse motor A27 connected to the other end of one of the bidirectional threaded rods A22 is installed at the other end of the device base 1, so that the supporting lifting frame 4 can be effectively raised and lowered.

[0037] By starting the forward and reverse motor 27, one of the two-way threaded rods A22 is rotated, and the rotation of one of the two-way threaded rods A22 drives the other two-way threaded rod A22 to rotate through two sprockets A25 and a chain A26. The rotation of the two two-way threaded rods A22 causes the two threaded movable sleeves A23 on their surfaces to move back to back, and the relatively moving threaded movable sleeves A23 push the two main support beams 15 through the lifting adjustment rod 24.

[0038] Embodiment 3, on the basis of embodiment 1, two circular grooves 28 are provided inside the circular through hole 6, two movable rings 7 are respectively installed inside the two circular grooves 28, the outer circumferential surfaces of the two movable rings 7 are fixedly installed with outer gear rings 29, the insides of the two circular grooves 28 are annularly and equidistantly installed with transmission gears 30, and the transmission gears 30 are meshed and connected with the outer gear rings 29; a connecting shaft 31 is connected between the axes of two opposite transmission gears 30 inside the two circular grooves 28, a forward and reverse motor B32 is installed on one side of the fixed block 5, and the output end of the forward and reverse motor B32 is fixedly connected with the output end of the forward and reverse motor B32, thereby effectively driving the two movable rings 7, the two plates 8, the two splints 9 and the two protective rubber clamping pads 10 to perform synchronous rotation adjustment.

[0039] By starting the forward and reverse motor B32, the connecting shaft 31 is rotated, and the rotation of the connecting shaft 31 will drive the two transmission gears 30 connected thereto to rotate. The rotation of the two transmission gears 30 will transmit the rotation of the two outer gear rings 29 through other rotatable transmission gears 30 inside the two ring grooves 28. The rotation of the two outer gear rings 29 will drive the movable ring 7 to rotate. The rotation of the two movable rings 7 will drive the two plates 8, the two clamping plates 9 and the two protective rubber clamping pads 10 to perform synchronous rotation adjustment, thereby flipping and adjusting the blank crankcase between the two clamped clamping plates 9 and the two protective rubber clamping pads 10.

[0040] Mounting grooves 33 are provided on the opposite sides of the two plates 8, and bidirectional threaded rods B34 are rotatably installed inside the two mounting grooves 33. The surfaces of the bidirectional threaded rods B34 are symmetrically threadedly connected with two threaded moving blocks 35, and telescopic adjustment rods 36 are rotatably connected at both ends of the two threaded moving blocks 35. Fixed connecting blocks 37 are connected between one ends of the four telescopic adjustment rods 36 on one side of the same plate 8, and the two fixed connecting blocks 37 are respectively fixedly connected to the two clamping plates 9; one ends of the two bidirectional threaded rods B34 extend to the outside of one end of the two plates 8 and are fixedly connected with sprockets B38, and a chain B39 is installed between the two sprockets B38; a forward and reverse motor C40 is installed at the other end of one of the plates 8, and the output end of the forward and reverse motor C40 is fixedly connected to the other end of one of the bidirectional threaded rods B34, so that the relative movement of the two clamping plates 9 can be effectively adjusted.

[0041] By starting the forward and reverse motor C40, one of the two-way threaded rods B34 is rotated, and the rotation of one of the two-way threaded rods B34 will cause the other two-way threaded rod B34 to rotate synchronously through two sprockets B38 and chains B39. The rotation of the two two-way threaded rods B34 will cause the two threaded moving blocks 35 on their surfaces to move opposite to each other. The two relatively moving threaded moving blocks 35 will push the fixed connecting block 37 to move through four telescopic adjustment rods 36. The two relatively moving fixed connecting blocks 37 will drive the two clamps 9 and the two protective rubber clamping pads 10 to move relative to each other, so that the two clamps 9 can clamp and fix the blank crankcase through the two protective rubber clamping pads 10.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crankcase blank turning device, comprising a device base (1), characterized in that: One end of the top of the device base (1) is fixedly installed with support blocks (2) at equal distances, and the tops of the opposite sides of two adjacent support blocks (2) are both installed with rotatable and adjustable support plates (3), and the two adjacent support plates (3) can be spliced ​​into a support shielding plate flush with the top of the support block (2). Through the splicing of multiple support plates (3) and a plurality of support blocks (2), a platform for placing a rough crankcase can be effectively formed, and the top of the device base (1) is installed with a supporting lifting frame (4) located between the support blocks (2), and the supporting lifting frame (4) can be raised and lowered. The device base (1 ) is fixedly installed with a fixed block (5) at an equal distance from the other end of the top, a round through hole (6) is opened in the middle of the fixed block (5), two rotatably adjustable movable rings (7) are installed inside the round through hole (6), two plates (8) are fixedly installed symmetrically between the insides of the two movable rings (7), telescopically adjustable clamping plates (9) are installed on the opposite sides of the two plates (8), and protective rubber clamping pads (10) are fixedly installed on one end of the opposite sides of the two clamping plates (9), and the two relatively movable clamping plates (9) can clamp and fix the rough crankcase through the protective rubber clamping pads (10).

2. A crankcase blank turning device according to claim 1, characterized in that: The tops of the opposite sides of two adjacent support blocks (2) are each provided with a vertical inner groove (11), the interior of the vertical inner groove (11) is rotatably connected to a rotating shaft (12), the support plate (3) is fixedly connected to the surface of the rotating shaft (12), and both ends of the rotating shaft (12) extend outside the two ends of the support block (2) and are fixedly mounted with an adjusting gear (13).

3. A crankcase blank turning device according to claim 2, characterized in that: The supporting lifting frame (4) comprises two main supporting beams (15) and a plurality of middle supporting plates (16), wherein the plurality of middle supporting plates (16) are fixedly installed at equal distances between the two main supporting beams (15), the supporting block (2) is located between two adjacent middle supporting plates (16), the top of the middle supporting plates (16) are fixedly installed with balls (17) at equal distances, and the bottoms of the two main supporting beams (15) are fixedly installed with two fixing blocks (18).

4. A crankcase blank turning device according to claim 3, characterized in that: A plurality of fixed vertical plates (19) are fixedly installed on opposite sides of the two main support beams (15), and a vertical rack (20) matching and drivingly meshing with the adjusting gear (13) is fixedly installed on one side of the fixed vertical plates (19).

5. The crankcase blank turning device according to claim 3 is characterized in that: Two horizontal slide grooves (21) are symmetrically provided at one end of the top of the device base (1), and bidirectional threaded rods A (22) are rotatably installed inside the two horizontal slide grooves (21). Two threaded movable sleeves A (23) are symmetrically threadedly connected on the surfaces of the two bidirectional threaded rods A (22), and lifting adjustment rods (24) are rotatably connected between the four threaded movable sleeves A (23) and the four fixed blocks (18).

6. The crankcase blank turning device according to claim 5, characterized in that: One end of each of the two bidirectional threaded rods A (22) extends to the outside of one end of the device base (1) and is fixedly mounted with a sprocket A (25), a chain A (26) is mounted between the two sprockets A (25), and the other end of the device base (1) is mounted with a forward and reverse motor A (27) connected to the other end of one of the bidirectional threaded rods A (22).

7. The crankcase blank turning device according to claim 1, characterized in that: Two circular grooves (28) are provided inside the circular through hole (6), and two movable rings (7) are respectively installed inside the two circular grooves (28). External gear rings (29) are fixedly installed on the outer circumferential surfaces of the two movable rings (7). Transmission gears (30) are installed inside the two circular grooves (28) in an annular manner and equidistantly, and the transmission gears (30) are meshingly connected with the external gear rings (29).

8. The crankcase blank turning device according to claim 7, characterized in that: A linkage shaft (31) is connected between the axes of two opposite transmission gears (30) in the two ring grooves (28), a forward and reverse motor B (32) is installed on one side of the fixed block (5), and the output end of the forward and reverse motor B (32) is fixedly connected to the output end of the forward and reverse motor B (32).

9. The crankcase blank turning device according to claim 1, characterized in that: The two plates (8) are provided with mounting grooves (33) on opposite sides, and bidirectional threaded rods B (34) are rotatably mounted inside the two mounting grooves (33). Two threaded moving blocks (35) are symmetrically threadedly connected to the surface of the bidirectional threaded rods B (34), and telescopic adjustment rods (36) are rotatably connected to the two ends of the two threaded moving blocks (35). A fixed connection block (37) is connected between one end of the four telescopic adjustment rods (36) on one side of the same plate (8), and the two fixed connection blocks (37) are fixedly connected to the two clamping plates (9) respectively.

10. The crankcase blank turning device according to claim 9, characterized in that: One end of each of the two bidirectional threaded rods B (34) extends outside one end of the two plates (8) and is fixedly connected to a sprocket B (38), a chain B (39) is installed between the two sprockets B (38), a forward and reverse motor C (40) is installed at the other end of one of the plates (8), and an output end of the forward and reverse motor C (40) is fixedly connected to the other end of one of the bidirectional threaded rods B (34).

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