Turning mechanism for front section of shell
The adjustable fixing device for combustion chamber shells addresses the challenge of inconsistent wall thickness and custom tooling needs, ensuring secure and cost-effective processing of engines with varying shell sizes.
Patent Information
- Application Number
- CN202421068482.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The shape of the combustion chamber shell in engines is difficult to process due to its unique structure, leading to inconsistent wall thickness and the need for custom fixing tools for different sizes, increasing processing costs.
A shell front section machining mechanism with an adjustable fixing device, including a central axis, adjustment fixture, and movable tightening assemblies, allowing for adaptive fixation of combustion chamber shells of varying sizes.
Enables secure and cost-effective fixation of combustion chamber shells of different sizes, improving processing accuracy and reducing the need for custom tools.
Smart Images
Figure CN222242664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical processing mechanisms, in particular to a shell front section turning mechanism. Background Art
[0002] Due to its special purpose and product structure, the shape of the combustion chamber of our country's engine is not easy to process. The combustion chamber shell is a rotating body part, with the small end as a convergent section and the large end as a diastolic section. The traditional combustion chamber shell blank has a large outer shape margin, which is convenient for clamping when machining the inner shape. After the inner shape is machined in place, it is fixed with the inner shape profiling mechanism to process the outer shape. When machining the outer shape, the inner shape straight line section at the small end is not tightly fitted with the profiling mechanism, and the consistency of the wall thickness cannot be guaranteed.
[0003] The prior art CN217776240U discloses a combustion chamber shell machining mechanism, including an inner cavity fixing tool, including a large-end inner shaped tire, a small-end inner shaped tire, a small-end inner oblique pin, a central shaft, a central shaft nut, an intermediate positioning pin and two standard keys; the large-end inner shaped tire is axially and vertically placed in the large-end inner cavity of the combustion chamber shell to be machined; the small-end inner shaped tire is axially and vertically placed on the top of the large-end inner shaped tire, and is located in the small-end inner cavity of the combustion chamber shell to be machined; the small-end inner oblique pin is a conical annular structure; the small-end inner oblique pin is arranged at the top of the small-end inner shaped tire, and is located between the small-end inner shaped tire and the small-end inner wall of the combustion chamber shell to be machined; the central shaft axially and vertically passes through the axes of the large-end inner shaped tire and the small-end inner shaped tire; central shaft nuts are arranged at both axial ends of the central shaft; the intermediate positioning pin is arranged at the butt surface of the large-end inner shaped tire and the small-end inner shaped tire; and the circumferential rotation of the central shaft is limited by two standard keys. The inner cavity fixing tool is installed inside the external combustion chamber shell to be processed, and is used to fix the external combustion chamber shell to be processed; the utility model can well control the shell deformation, improve the processing accuracy and facilitate the processing of large combustion chamber shells.
[0004] However, the shape of the inner cavity fixing tool in the above technology is consistent with the shape of the combustion chamber shell. For combustion chamber shells of different sizes, it is necessary to manufacture suitable fixing tools, which increases the processing cost. Utility Model Content
[0005] The purpose of the utility model is to provide a shell front section machining mechanism, which solves the problem that the shape of the inner cavity fixing tool in the prior art is consistent with the shape of the combustion chamber shell, and suitable fixing tooling needs to be manufactured for combustion chamber shells of different sizes, which leads to increased machining costs.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a shell front section machining mechanism, including a middle axis,
[0007] Also included is an adjustment fixture;
[0008] The adjusting and fixing device includes a center seat, a spring, a center tightening block, a telescopic rod and a movable tightening assembly. The center seat is fixedly connected to the center axis and sleeved on the middle position of the center axis. One end of the spring is fixedly connected to the center seat, and the other end of the spring is fixedly connected to the center tightening block. The spring is located between the center seat and the center tightening block. One end of the telescopic rod is fixedly connected to the center seat, and the other end of the telescopic rod is fixedly connected to the center tightening block. The telescopic rod is located in the inner ring of the spring. The movable tightening assembly is connected to the center axis and sleeved on the center axis.
[0009] Among them, the movable tightening assembly includes an annular sleeve, a hemispherical abutment block and a telescopic member, the annular sleeve is connected to the central axis by bolts and is sleeved on the outside of the central axis; the hemispherical abutment block is connected to the annular sleeve by a telescopic member; the telescopic member is installed on the outside of the annular sleeve and is fixedly connected to the hemispherical abutment block.
[0010] Wherein, the telescopic member includes a threaded rod and a threaded sleeve, the threaded rod is fixedly connected to the annular sleeve and is located on the outer side wall of the annular sleeve; the threaded sleeve is threadedly connected to the threaded rod, is sleeved on the threaded rod, and is fixedly connected to the hemispherical stop block.
[0011] Wherein, the adjusting and fixing device also includes a sleeve ring and a limiting plate, the sleeve ring is connected to the central axis by bolts and sleeved on the outside of the central axis; the limiting plate is fixedly connected to the sleeve ring and fixedly sleeved on the outside of the sleeve ring.
[0012] Among them, the adjustment and fixing device also includes a limit block, which is fixedly connected to the sleeve ring and is located on the inner wall of the sleeve ring; the central axis has a limit groove, and the limit groove is arranged on a side of the central axis close to the limit block and cooperates with the limit block.
[0013] The utility model provides a shell front section machining mechanism. When machining the outer side of the combustion chamber shell, it is necessary to fix the inner cavity of the combustion chamber shell, extend the central axis into the inner cavity of the combustion chamber shell, and the central position tightening block on the central seat fixedly installed in the middle of the central axis slides along the inner cavity wall of the combustion chamber shell to the middle section of the combustion chamber shell. The central position tightening block gradually squeezes the spring, and the spring is compressed. The central position tightening block is tightened against the inner wall of the middle section of the combustion chamber shell by the rebound force of the spring. Then, a plurality of movable tightening assemblies are installed at the upper and lower ends of the central axis in the inner cavity of the combustion chamber shell to press and fit the inner cavity of the combustion chamber shell, so that the adjustable fixing device can fit combustion chamber shells of different sizes tightly, realize adaptive fixation of the inner cavity of the combustion chamber shell, and the fixing processing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.
[0015] Figure 1 It is a shell internal installation diagram of the shell front section turning mechanism of the first embodiment of the utility model.
[0016] Figure 2 It is a structural schematic diagram of the shell front section turning mechanism of the first embodiment of the utility model.
[0017] Figure 3 It is a structural schematic diagram of the shell front section turning mechanism of the second embodiment of the utility model.
[0018] In the figure: 101-central axis, 102-central seat, 103-spring, 104-central tightening block, 105-telescopic rod, 106-annular sleeve, 107-hemispherical resisting block, 108-threaded rod, 109-threaded sleeve, 210-sleeve ring, 211-limiting plate, 212-limiting block, 213-limiting groove. DETAILED DESCRIPTION
[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0020] First embodiment:
[0021] See also Figure 1 and Figure 2 ,in Figure 1 This is a diagram of the internal installation of the housing of the housing front section machining mechanism of the first embodiment of the utility model. Figure 2 It is a structural schematic diagram of the shell front section turning mechanism of the first embodiment of the utility model.
[0022] The utility model provides a shell front section machining mechanism: including a central axis 101 and an adjusting and fixing device, the adjusting and fixing device including a central seat 102, a spring 103, a central tightening block 104, a telescopic rod 105 and a movable tightening assembly, the movable tightening assembly including an annular sleeve 106, a hemispherical tightening block 107 and a telescopic member, the telescopic member including a threaded rod 108 and a threaded sleeve 109. The above scheme solves the problem that the shape of the inner cavity fixing tool in the prior art is consistent with the shape of the combustion chamber shell, and that it is necessary to manufacture an adaptive fixing tool for combustion chamber shells of different sizes, resulting in increased processing costs; it can be understood that the above scheme can fit combustion chamber shells of different sizes tightly, achieve adaptive fixation of the inner cavity of the combustion chamber shell, and achieve better fixing processing effect.
[0023] In this embodiment, the central axis 101 is a cylindrical structure, and the adjusting and fixing device is installed to fix the inner cavity of the combustion chamber in cooperation with the adjusting and fixing device. The adjusting and fixing device is adapted to the inner cavities of different combustion chambers for tight fixation, which reduces the cost of processing the combustion chamber shell and improves the applicability of the lathe processing mechanism.
[0024] Among them, the middle seat 102 is fixedly connected to the middle axis 101 and is sleeved on the middle position of the middle axis 101, one end of the spring 103 is fixedly connected to the middle seat 102, and the other end of the spring 103 is fixedly connected to the middle tightening block 104, and the spring 103 is located between the middle seat 102 and the middle tightening block 104, one end of the telescopic rod 105 is fixedly connected to the middle seat 102, and the other end of the telescopic rod 105 is fixedly connected to the middle tightening block 104, and the telescopic rod 105 is located in the inner ring of the spring 103, and the movable tightening assembly is connected to the middle axis 101 and is sleeved on the middle axis 101.The middle seat 102 is a cube structure with a circular through hole in the middle. The middle seat 102 is fixedly welded to the middle position of the central axis 101. The springs 103 are fixedly arranged on the left and right sides of the middle seat 102. The middle position abutting block 104 is fixedly installed at one end of the two springs 103 away from the middle seat 102. The telescopic rod 105 is arranged in the middle of the two springs 103. One end of the telescopic rod 105 is fixedly connected to the middle seat 102, and the other end of the telescopic rod 105 is fixedly connected to the middle position abutting block 104. The inner ring of the spring 103 is provided to guide the elastic expansion and contraction of the spring 103, so that the spring 103 can be expanded and contracted horizontally, and the spring 103 can be prevented from being skewed and unable to make the middle-position tightening block 104 press against the inner wall of the combustion chamber shell. The middle-position tightening block 104 is arc-shaped on one side close to the inner wall of the combustion chamber shell, and the two ends are conveniently pressed against the minimum diameter of the inner cavity of the combustion chamber shell, and the spring 103 is compressed by the middle-position tightening block 104, and the telescopic rod 105 cooperates with the spring 103 to contract, so that the spring 103 moves horizontally, and the rebound of the spring 103 The force pushes the center tightening block 104 to press against the inner wall of the combustion chamber shell. The upper and lower ends of the center axis 101 close to the center seat 102 are respectively installed with a plurality of the movable tightening components, and the number of the movable tightening components installed can be adjusted by the size and length of the combustion chamber shell, so that the inner cavity of the combustion chamber shell is fixed more tightly; therefore, when processing the outer side of the combustion chamber shell, it is necessary to fix the inner cavity of the combustion chamber shell, extend the center axis 101 into the inner cavity of the combustion chamber shell, and the center tightening block 104 on the center seat 102 fixedly installed in the middle of the center axis 101 is moved along The inner cavity wall of the combustion chamber shell slides in to the middle section of the combustion chamber shell, and the center tightening block 104 gradually squeezes the spring 103. The spring 103 is compressed, and the rebound force of the spring 103 makes the center tightening block 104 press against the inner wall of the middle section of the combustion chamber shell, and then a plurality of the movable tightening assemblies are installed at the upper and lower ends of the center axis 101 in the inner cavity of the combustion chamber shell to press against the inner cavity of the combustion chamber shell, so that the adjustment and fixing device can fit tightly to combustion chamber shells of different sizes, realize adaptive fixation of the inner cavity of the combustion chamber shell, and the fixing processing effect is better.
[0025] Secondly, the annular sleeve 106 is connected to the central axis 101 by bolts and is sleeved on the outside of the central axis 101; the hemispherical stop block 107 is connected to the annular sleeve 106 by a telescopic member; the telescopic member is installed on the outside of the annular sleeve 106 and is fixedly connected to the hemispherical stop block. The annular sleeve 106 is a circular ring structure, and its inner ring diameter matches the diameter of the central axis 101. The threaded sleeve 109 is arranged on the central axis 101 to achieve the position fixing of the movable clamping assembly. The annular sleeve 106 is provided with three telescopic members coaxially spaced at the same angle. The end of the telescopic member away from the annular sleeve 106 is provided with the hemispherical block 107. The telescopic length is adjusted by telescopic adjustment to make the arc end of the hemispherical block 107 press against the inner wall of the combustion chamber shell. Therefore, the annular sleeve 106 is sleeved on the central axis 101, and the position of the movable clamping assembly is fixed by bolts. Then, the hemispherical block 107 is driven and moved by the telescopic member to press against the inner wall of the combustion chamber shell, thereby achieving the effect of the movable clamping assembly fixing the inner cavity of the combustion chamber shell.
[0026] At the same time, the threaded rod 108 is fixedly connected to the annular sleeve 106 and is located on the outer side wall of the annular sleeve 106 ; the threaded sleeve 109 is threadedly connected to the threaded rod 108 , is sleeved on the threaded rod 108 , and is fixedly connected to the hemispherical stop block 107 . One end of the threaded rod 108 is fixedly connected to the annular sleeve 106, which matches the arc-shaped outer wall of the annular sleeve 106. Three threaded rods 108 are provided on one annular sleeve 106 with the same spacing angle. The outer thread of the threaded rod 108 matches the inner thread of the threaded sleeve 109. The threaded sleeve 109 is provided with a threaded groove with one end open for threaded connection with the threaded rod 108. The end of the threaded sleeve 109 away from the threaded rod 108 is fixedly connected to the hemispherical block 107, and the spherical end of the hemispherical block 107 is close to the inner wall of the combustion chamber housing. The position of the threaded sleeve 109 on the threaded rod 108 is adjusted by threaded rotation so that the hemispherical block 107 on the threaded sleeve 109 is tightly pressed against the inner wall of the combustion chamber housing, thereby achieving fixation of the inner cavity of the combustion chamber housing.
[0027] When the utility model is used to process the outer side of the combustion chamber shell, it is necessary to fix the inner cavity of the combustion chamber shell, extend the central axis 101 into the inner cavity of the combustion chamber shell, and the central tightening block 104 on the central seat 102 fixedly installed in the middle of the central axis 101 slides along the inner cavity wall of the combustion chamber shell to the middle section of the combustion chamber shell, and the central tightening block 104 gradually squeezes the spring 103, and the spring 103 is compressed, and the rebound force of the spring 103 makes the central tightening block 104 press against the inner wall of the middle section of the combustion chamber shell, and then install a plurality of the movable tightening assemblies at the upper and lower ends of the central axis 101 in the inner cavity of the combustion chamber shell to press against the inner cavity of the combustion chamber shell, so that the adjustable fixing device can fit the combustion chamber shells of different sizes tightly, realize the adaptive fixation of the inner cavity of the combustion chamber shell, and the fixing processing effect is better.
[0028] Second embodiment:
[0029] See also Figure 3 , Figure 3 It is a structural schematic diagram of the housing front section machining mechanism of the second embodiment of the utility model. Based on the first embodiment, the adjusting and fixing device of the utility model further comprises a sleeve ring 210 , a limiting plate 211 and a limiting block 212 , and the central axis 101 has a limiting groove 213 .
[0030] In this embodiment, the sleeve ring 210 is connected to the central axis 101 by bolts and sleeved on the outer side of the central axis 101 ; the limiting plate 211 is fixedly connected to the sleeve ring 210 and fixedly sleeved on the outer side of the sleeve ring 210 . The sleeve ring 210 is a circular ring structure, and its length is greater than the thickness of the limiting plate 211. The inner diameter of the sleeve ring 210 matches the diameter of the central axis 101. The limiting plate 211 is fixedly sleeved on the outer bottom of the sleeve ring 210. The limiting plate 211 is a rectangular structure, and a circular through hole is provided at the center thereof, and the circular through hole matches the outer diameter of the sleeve ring 210. The sleeve ring 210 and the central axis 101 are fixed to the outer side of the central axis 101 by threaded bolts, and the limiting plates 211 and the sleeve ring 210 are two in number, and are symmetrically fixed at the upper and lower ends of the central axis 101, respectively, and the two limiting plates 211 are respectively abutted against the upper and lower ends of the combustion chamber housing, and the installation of the sleeve ring 210 and the limiting plates 211 makes the abutment and positioning of the adjusting and fixing device in the combustion chamber housing more secure.
[0031] The limit block 212 is fixedly connected to the sleeve ring 210 and is located on the inner side wall of the sleeve ring 210; the limit groove 213 is arranged on the side of the central axis 101 close to the limit block 212 and cooperates with the limit block 212. The limit block 212 is a rectangular parallelepiped structure and is fixedly installed on the inner side wall of the sleeve ring 210, and the limit blocks 212 are fixedly installed on both sleeve rings 210. The open limit grooves 213 are provided on one side of the upper and lower ends of the central axis 101, which cooperate with the limit block 212 to provide conditions for the installation of the limit block 212. The limit block 212 cooperates with the limit groove 213 to prevent the central axis 101 from rotating during the fixing process.
[0032] Therefore, by means of the arrangement and coordination of the sleeve ring 210, the limiting plate 211, the limiting block 212 and the limiting groove 213, the installation and fixation of the central axis 101 is achieved, and the fixing stability of the adjusting and fixing device is further increased.
[0033] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.
Claims
1. A shell front section machining mechanism, including a central axis, characterized in that: Also included is an adjustment fixture; The adjusting and fixing device includes a center seat, a spring, a center tightening block, a telescopic rod and a movable tightening assembly. The center seat is fixedly connected to the center axis and sleeved on the middle position of the center axis. One end of the spring is fixedly connected to the center seat, and the other end of the spring is fixedly connected to the center tightening block. The spring is located between the center seat and the center tightening block. One end of the telescopic rod is fixedly connected to the center seat, and the other end of the telescopic rod is fixedly connected to the center tightening block. The telescopic rod is located in the inner ring of the spring. The movable tightening assembly is connected to the center axis and sleeved on the center axis.
2. The housing front section machining mechanism according to claim 1, characterized in that: The movable clamping assembly includes an annular sleeve, a hemispherical abutment block and a telescopic member. The annular sleeve is connected to the central axis by bolts and is sleeved on the outside of the central axis; the hemispherical abutment block is connected to the annular sleeve by a telescopic member; the telescopic member is installed on the outside of the annular sleeve and fixedly connected to the hemispherical abutment block.
3. The housing front section machining mechanism according to claim 2, characterized in that: The telescopic member includes a threaded rod and a threaded sleeve. The threaded rod is fixedly connected to the annular sleeve and is located on the outer side wall of the annular sleeve. The threaded sleeve is threadedly connected to the threaded rod, sleeved on the threaded rod, and fixedly connected to the hemispherical stop block.
4. The housing front section machining mechanism according to claim 1, characterized in that: The adjusting and fixing device also includes a sleeve ring and a limiting plate. The sleeve ring is connected to the central axis by bolts and sleeved on the outer side of the central axis; the limiting plate is fixedly connected to the sleeve ring and fixedly sleeved on the outer side of the sleeve ring.
5. The housing front section machining mechanism according to claim 4, characterized in that: The adjusting and fixing device also includes a limit block, which is fixedly connected to the sleeve ring and located on the inner wall of the sleeve ring; the central axis has a limit groove, which is arranged on a side of the central axis close to the limit block and cooperates with the limit block.