Crankshaft machining numerical control machine tool convenient to replace
By introducing adjustment and cleaning mechanisms into CNC machine tools, the problem of low crankshaft replacement efficiency has been solved, enabling convenient crankshaft replacement and automatic cleaning of waste materials, thereby improving work efficiency and equipment continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI JIEXING MASCH MFG CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-21
AI Technical Summary
Existing CNC machine tools for crankshaft machining are inefficient when changing crankshafts, making it difficult to achieve convenient replacement, increasing labor costs and reducing work efficiency.
The design incorporates a combination of adjustment and cleaning mechanisms, including components such as a motor, threaded rod, hydraulic cylinder, and locking plate. The motor drives the threaded rod to move the adjustment and locking plates, enabling convenient installation and replacement of the crankshaft. Simultaneously, components such as gears, scrapers, and collection boxes enable automatic cleaning of waste materials.
It enables rapid installation and replacement of crankshafts, improves work efficiency, effectively prevents waste accumulation, and ensures the continuity of normal operation.
Smart Images

Figure CN224144138U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of CNC machine tool technology, and more specifically, to a CNC machine tool for crankshaft machining that is easy to replace. Background Technology
[0002] CNC machine tools, short for numerical control machine tools, are automated machine tools equipped with a program control system. This control system logically processes programs with control codes or other symbolic instructions, decodes them, represents them with coded numbers, and inputs them into the CNC device via an information carrier. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings. CNC machine tools effectively solve the problems of machining complex, precise, small-batch, and multi-variety parts. They are flexible, high-efficiency automated machine tools, representing the development direction of modern machine tool control technology. They are typical mechatronics products, and their applications are wide-ranging, with configurations varying depending on the application.
[0003] According to a public disclosure (publication number: CN 219684742U), a special CNC machine tool for crankshaft machining is provided, which includes a CNC machine tool body. A machining groove is provided on the front of the CNC machine tool body. A machining device is fixed to the top wall of the inner cavity of the machining groove. A collection mechanism for collecting debris generated during crankshaft machining is provided inside the machining groove and below the machining device. A protective mechanism for improving the safety of the CNC machine tool during machining is provided on the front of the CNC machine tool body and to the left of the machining groove. The collection mechanism includes a fixed plate fixed inside the machining groove and below the machining device. The lower surface of the fixed plate has at least two flow ports.
[0004] In the aforementioned application, the cooperation between the CNC machine tool body and the protective mechanism makes it difficult to easily replace the crankshaft after processing. This results in increased labor costs and reduced work efficiency for the workers replacing the crankshaft. Therefore, we propose a CNC machine tool for crankshaft processing that is easy to replace. Utility Model Content
[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a CNC machine tool for crankshaft machining that is easy to replace, thus solving the technical problem of easy crankshaft replacement in related technologies.
[0006] According to one aspect, at least one embodiment of this disclosure provides a CNC machine tool for crankshaft machining that is easy to replace, including a CNC machine tool, a control panel provided on the side of the CNC machine tool, a protective door slidably connected to the side of the CNC machine tool, and an adjustment mechanism provided inside the CNC machine tool;
[0007] The adjustment mechanism includes a motor, the side of which is fixedly connected to the inner wall of the CNC machine tool. A threaded rod is fixedly connected to the output end of the motor. A threaded sleeve is threadedly connected to the circumferential surface of the threaded rod. A moving rod is fixedly connected to the top of the threaded sleeve. An adjustment plate is fixedly connected to one end of the moving rod. An annular hydraulic cylinder is rotatably connected inside the adjustment plate. A force-bearing rod is slidably connected to one end of the annular hydraulic cylinder via a piston. A hydraulic rod is slidably connected to the other end of the annular hydraulic cylinder via another piston. A locking plate is fixedly connected to the end of the hydraulic rod away from the side of the annular hydraulic cylinder.
[0008] For example, in at least one embodiment of this disclosure, a CNC machine tool for crankshaft machining that is easy to replace is provided, which further includes: a return spring fixedly connected to the side of the annular hydraulic cylinder, and the end of the return spring away from the side of the annular hydraulic cylinder is fixedly connected to the circumferential surface of the force-bearing rod, the purpose of which is to ensure that the force-bearing rod can automatically reset and reduce manual intervention.
[0009] The circumferential surface of the force-bearing rod is elastically connected to the side of the annular hydraulic cylinder through a return spring. The circumferential surface of the threaded rod is fixedly penetrated by a limit plate. A transparent observation window is provided on the side of the protective door. The function of the limit plate is to limit the displacement distance of the threaded sleeve, and the function of the transparent observation window is to allow the operator to observe the internal condition of the CNC machine tool at any time.
[0010] A limiting shaft is fixedly connected to the side of the motor. The circumferential surface of the limiting shaft passes through and slides through the side of the threaded sleeve. The purpose of this is to ensure that the threaded sleeve does not rotate when it moves.
[0011] The hydraulic rod and locking plate are provided in two quantities and are symmetrical to each other along the vertical central axis of the annular hydraulic cylinder. The initial state of the return spring is set to a relaxed state, which is to ensure that the crankshaft can be stably fixed.
[0012] According to another aspect, at least one embodiment of this disclosure also provides a CNC machine tool for crankshaft machining that is easy to replace, including a cleaning mechanism. The cleaning mechanism includes a rotating shaft, which is fixedly connected to one end of a threaded rod. A gear is fixedly passed through the circumferential surface of the rotating shaft. A slide groove is provided inside the CNC machine tool, and a rack is slidably connected inside the slide groove. A connecting rod is fixedly connected to the top of the rack, and a scraper is fixedly connected to the end of the connecting rod away from the top of the rack. The purpose of this is to clean the waste material after machining.
[0013] For example, in at least one embodiment of this disclosure, a CNC machine tool for easy-to-replace crankshaft machining is provided, which further includes: a collection groove is provided on the side of the CNC machine tool, and a collection box is slidably connected inside the collection groove, the purpose of which is to ensure that the waste material after cleaning can be collected inside the collection box.
[0014] The CNC machine tool is fixedly connected to a protective plate. The protective plate has a moving groove on its side. The side of the connecting rod is slidably connected to the inside of the moving groove. The purpose of this is to prevent waste material from splashing and getting stuck in the transmission components.
[0015] The circumferential surface of the gear meshes with the side surface of the rack, and the bottom of the scraper is located below the adjusting plate. The purpose of this is to ensure that the rotation of the gear can drive the rack to move.
[0016] The bottom of the scraper is in contact with the interior of the CNC machine tool, and a pull handle is fixedly connected to the side of the collection box. The purpose of this is to ensure that the scraper can clean the waste inside the CNC machine tool.
[0017] The beneficial effects of the embodiments disclosed herein are as follows:
[0018] 1. In this disclosure, through the cooperation between components such as the motor, adjusting plate, and locking plate of the adjusting mechanism, after the crankshaft is completed inside the CNC machine tool, the operator moves the protective door to open the CNC machine tool. At this time, the motor is started, and the adjusting plate moves away from the triangular clamping plate inside the CNC machine tool, causing the crankshaft to move away from one end of the force rod. The hydraulic rod retracts into the annular hydraulic cylinder, causing the locking plate to release the crankshaft from its fixation. This makes it convenient for the operator to take out and replace the machined crankshaft. This design achieves the effect of easy replacement of the machined crankshaft, enabling the rapid installation, adjustment, and replacement of the crankshaft, thus improving work efficiency.
[0019] 2. In this disclosure, through the mutual cooperation between components such as gears, scrapers, and collection boxes in the cleaning mechanism, when replacing the machined crankshaft, the threaded rod rotates, driving the shaft to rotate. The shaft rotation drives the gears to rotate. Through the meshing of the gears and racks, the scraper cleans the processed waste during its movement. The cleaned waste falls into the collection box, where personnel can then extract and collect it through the collection trough. This design achieves the effect of cleaning the processed waste, effectively preventing waste accumulation and affecting normal operation. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0021] Figure 1 This is a first-person perspective three-dimensional structural diagram of the appearance of the present disclosure;
[0022] Figure 2This is a first-person three-dimensional cross-sectional structural diagram of the present disclosure;
[0023] Figure 3 This is a schematic diagram of the structure in a second-view three-dimensional cross-section of the present disclosure;
[0024] Figure 4 For this disclosure Figure 2 A three-dimensional magnified structural diagram of A in the middle;
[0025] Figure 5 For this disclosure Figure 3 A three-dimensional magnified structural diagram of B.
[0026] In the diagram: 1. CNC machine tool; 2. Control panel; 3. Protective door; 4. Adjustment mechanism; 41. Motor; 42. Threaded rod; 43. Threaded sleeve; 44. Moving rod; 45. Adjusting plate; 46. Annular hydraulic cylinder; 47. Force rod; 48. Hydraulic rod; 49. Locking plate; 410. Return spring; 411. Limiting plate; 412. Transparent observation window; 413. Limiting shaft; 5. Cleaning mechanism; 51. Rotating shaft; 52. Gear; 53. Slide groove; 54. Rack; 55. Connecting rod; 56. Scraper; 57. Collection trough; 58. Collection box; 59. Protective plate; 510. Moving trough. Detailed Implementation
[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] like Figures 1-5 As shown, it illustrates a replaceable CNC machine tool for crankshaft machining in one embodiment of the present disclosure, including a CNC machine tool 1, a control panel 2 provided on the side of the CNC machine tool 1, a protective door 3 slidably connected to the side of the CNC machine tool 1, and an adjustment mechanism 4 provided inside the CNC machine tool 1;
[0034] The adjustment mechanism 4 includes a motor 41, which is fixedly connected to the inner wall of the CNC machine tool 1. A threaded rod 42 is fixedly connected to the output end of the motor 41. A threaded sleeve 43 is threadedly connected to the circumferential surface of the threaded rod 42. A moving rod 44 is fixedly connected to the top of the threaded sleeve 43. An adjustment plate 45 is fixedly connected to one end of the moving rod 44. An annular hydraulic cylinder 46 is rotatably connected inside the adjustment plate 45. A force-bearing rod 47 is slidably connected to one end of the annular hydraulic cylinder 46 through a piston. A hydraulic rod 48 is slidably connected to the other end of the annular hydraulic cylinder 46 through another piston. A locking plate 49 is fixedly connected to the end of the hydraulic rod 48 away from the side of the annular hydraulic cylinder 46.
[0035] In some examples, a return spring 410 is fixedly connected to the side of the annular hydraulic cylinder 46. The end of the return spring 410 away from the side of the annular hydraulic cylinder 46 is fixedly connected to the circumferential surface of the force rod 47. The purpose is to ensure that the force rod 47 can automatically reset and reduce manual intervention.
[0036] The circumferential surface of the force-bearing rod 47 is elastically connected to the side of the annular hydraulic cylinder 46 through the return spring 410. The circumferential surface of the threaded rod 42 is fixedly penetrated by the limit plate 411. A transparent observation window 412 is provided on the side of the protective door 3. The function of the limit plate 411 is to limit the displacement distance of the threaded sleeve 43. The function of the transparent observation window 412 is to allow the staff to observe the internal situation of the CNC machine tool 1 at any time.
[0037] A limiting shaft 413 is fixedly connected to the side of the motor 41. The circumferential surface of the limiting shaft 413 passes through and slides through the side of the threaded sleeve 43. The purpose is to ensure that the threaded sleeve 43 does not rotate when it moves.
[0038] There are two hydraulic rods 48 and locking plates 49, which are symmetrical to each other along the vertical central axis of the annular hydraulic cylinder 46. The initial state of the return spring 410 is set to a relaxed state, which is to ensure that the crankshaft can be stably fixed.
[0039] For example, such as Figures 1-5 As shown, after the crankshaft is completed inside the CNC machine tool 1, the operator moves the protective door 3 to open the CNC machine tool 1. At this time, the motor 41 is started, and the output end of the motor 41 rotates. The rotation of the output end of the motor 41 drives the threaded rod 42 to rotate. The rotation of the threaded rod 42 drives the threaded sleeve 43 to move linearly through the limiting shaft 413. The movement of the threaded sleeve 43 drives the adjusting plate 45 to move through the moving rod 44. At this time, the adjusting plate 45 moves away from the triangular clamp inside the CNC machine tool 1, so that one end of the crankshaft leaves the force rod 47. The force rod 47 is reset by the return spring 410. The reset of the force rod 47 causes the hydraulic rod 48 to retract into the annular hydraulic cylinder 46, so that the locking plate 49 releases the fixing of the crankshaft, making it convenient for the operator to take out and replace the processed crankshaft. After the crankshaft is replaced, the threaded sleeve 43 moves in the opposite direction through the motor 41 to adjust and lock the replaced crankshaft.
[0040] like Figures 1-5 As shown, it illustrates a CNC machine tool for easy-to-replace crankshaft machining in another embodiment of this disclosure. It is largely the same as the above-described technical solution, so only the differences are described. It includes a cleaning mechanism 5, which includes a rotating shaft 51. The rotating shaft 51 is fixedly connected to one end of the threaded rod 42. A gear 52 is fixedly passed through the circumferential surface of the rotating shaft 51. A slide groove 53 is provided inside the CNC machine tool 1. A rack 54 is slidably connected inside the slide groove 53. A connecting rod 55 is fixedly connected to the top of the rack 54. A scraper 56 is fixedly connected to the end of the connecting rod 55 away from the top of the rack 54. The purpose of the scraper 56 is to clean the waste material after machining.
[0041] In some examples, the CNC machine tool 1 is provided with a collection groove 57 on its side, and a collection box 58 is slidably connected inside the collection groove 57, the purpose of which is to ensure that the waste after cleaning can be collected inside the collection box 58.
[0042] The CNC machine tool 1 has a protective plate 59 fixedly connected inside. The protective plate 59 has a moving groove 510 on its side. The side of the connecting rod 55 is slidably connected to the inside of the moving groove 510. The purpose is to prevent waste material from splashing and getting stuck in the transmission components.
[0043] The circumferential surface of gear 52 meshes with the side surface of rack 54, and the bottom of scraper 56 is located below adjusting plate 45. The purpose of this is to ensure that the rotation of gear 52 can drive rack 54 to move.
[0044] The bottom of the scraper 56 is in contact with the interior of the CNC machine tool 1, and a pull handle is fixedly connected to the side of the collection box 58. The purpose of this is to ensure that the scraper 56 can move to clean the waste inside the CNC machine tool 1.
[0045] For example, such as Figures 1-5 As shown, when replacing the machined crankshaft, the threaded rod 42 rotates, causing the rotating shaft 51 to rotate. The rotating shaft 51 rotates, causing the gear 52 to rotate. Through the meshing of the gear 52 and the rack 54, the gear 52 rotates, causing the rack 54 to move inside the slide groove 53. The movement of the rack 54 causes the connecting rod 55 to move inside the moving groove 510. The movement of the connecting rod 55 causes the scraper 56 to move. During the movement of the scraper 56, the machined waste is cleaned. The cleaned waste falls into the collection box 58. At this time, personnel can extract and collect the waste from the collection box 58 through the collection groove 57.
[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications or substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A numerical control machine tool for machining of a crankshaft, which is characterized by, The system includes a CNC machine tool (1), a control panel (2) is provided on the side of the CNC machine tool (1), a protective door (3) is slidably connected to the side of the CNC machine tool (1), and an adjustment mechanism (4) is provided inside the CNC machine tool (1). The adjustment mechanism (4) includes a motor (41), the side of which is fixedly connected to the inner wall of the CNC machine tool (1). The output end of the motor (41) is fixedly connected to a threaded rod (42). The circumferential surface of the threaded rod (42) is threadedly connected to a threaded sleeve (43). The top of the threaded sleeve (43) is fixedly connected to a moving rod (44). One end of the moving rod (44) is fixedly connected to an adjusting plate (45). The inside of the adjusting plate (45) is rotatably connected to an annular hydraulic cylinder (46). One end of the annular hydraulic cylinder (46) is slidably connected to a force rod (47) via a piston. The other end of the annular hydraulic cylinder (46) is slidably connected to a hydraulic rod (48) via another piston. The end of the hydraulic rod (48) away from the side of the annular hydraulic cylinder (46) is fixedly connected to a locking plate (49).
2. The numerical control machine tool for machining of crankshaft with easy replacement according to claim 1, characterized in that, A return spring (410) is fixedly connected to the side of the annular hydraulic cylinder (46), and the end of the return spring (410) away from the side of the annular hydraulic cylinder (46) is fixedly connected to the circumferential surface of the force rod (47).
3. The numerical control machine tool for machining of crankshaft with easy replacement of the tooling assembly as claimed in claim 2 wherein, The circumferential surface of the force-bearing rod (47) is elastically connected to the side of the annular hydraulic cylinder (46) through a return spring (410), the circumferential surface of the threaded rod (42) is fixedly penetrated through the limit plate (411), and a transparent observation window (412) is provided on the side of the protective door (3).
4. The numerical control machine tool for machining of crankshaft with easy replacement according to claim 3, wherein, A limiting shaft (413) is fixedly connected to the side of the motor (41), and the circumferential surface of the limiting shaft (413) is slidably connected to the side of the threaded sleeve (43).
5. The numerical control machine tool for machining of crankshaft with easy replacement according to claim 4, wherein, The hydraulic rod (48) and locking plate (49) are provided in two quantities and are symmetrical to each other along the vertical central axis of the annular hydraulic cylinder (46). The initial state of the reset spring (410) is set to the relaxed state.
6. The numerical control machine tool for machining of crankshaft with easy replacement of the tooling assembly as claimed in claim 5 wherein, The CNC machine tool (1) is equipped with a cleaning mechanism (5). The cleaning mechanism (5) includes a rotating shaft (51). The rotating shaft (51) is fixedly connected to one end of a threaded rod (42). A gear (52) is fixedly passed through the circumferential surface of the rotating shaft (51). A sliding groove (53) is opened inside the CNC machine tool (1). A rack (54) is slidably connected inside the sliding groove (53). A connecting rod (55) is fixedly connected to the top of the rack (54). A scraper (56) is fixedly connected to the end of the connecting rod (55) away from the top of the rack (54).
7. The numerical control machine tool for machining of crankshaft with easy replacement according to claim 6, wherein, The CNC machine tool (1) has a collection groove (57) on its side, and a collection box (58) is slidably connected inside the collection groove (57).
8. The numerical control machine tool for machining of crankshaft with easy replacement of the tooling assembly as claimed in claim 7 wherein, The CNC machine tool (1) is fixedly connected to a protective plate (59), and a moving groove (510) is provided on the side of the protective plate (59). The side of the connecting rod (55) is slidably connected to the inside of the moving groove (510).
9. The numerical control machine tool for machining of crankshaft with easy replacement of the tooling assembly as claimed in claim 8 wherein, The circumferential surface of the gear (52) is engaged with the side surface of the rack (54), and the bottom of the scraper (56) is below the adjusting plate (45).
10. The numerical control machine tool for machining of crankshaft with easy replacement of the tooling assembly as claimed in claim 9 wherein, The bottom of the scraper (56) is in contact with the inside of the numerical control machine tool (1), and the side surface of the collecting box (58) is fixedly connected with a pulling handle.
Citation Information
Patent Citations
Numerical control machine tool special for crankshaft machining
CN219684742U