Anti-deformation flywheel shell processing tooling

Abstract

The utility model relates to tool fixture technical field discloses a kind of anti-deformation flywheel housing machining tool, including the inner support component in flywheel housing interior and the outer support component in flywheel housing peripheral side;It further includes workbench, and the panel of workbench is opened into limiting through-hole;Inner support component includes center pole, and the bottom of center pole forms radial shrink section, radial shrink section passes through limiting through-hole, and the periphery of radial shrink section is equipped with rotating cylinder, and rotating cylinder top portion forms thread section, and thread section is threadedly connected with thread sleeve, and center pole top is equipped with fixed ring, and inner support component further includes support plate, and the hinge connection between positioning plate and thread sleeve is realized by first connecting rod, and the hinge connection between positioning plate and fixed ring is realized by second connecting rod, and by inner support component, flywheel housing can be supported and fixed from inside to outside, and support plate and flywheel housing contact area are larger, to avoid partial deformation of flywheel housing in clamping process due to stress concentration.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, specifically relating to a tooling for processing a deformation-resistant flywheel housing. Background Technology

[0002] The flywheel housing is a crucial component of an engine, primarily serving to connect the engine and transmission, bear part of the engine and transmission weight, and protect the flywheel. Flywheel housings typically feature ventilation holes, protrusions, and other structural elements, necessitating clamping and securing during manufacturing. Current technology often employs extended grippers to hold the motor housing in this manner.

[0003] For a cylindrical, thin-walled casing, its structural rigidity is insufficient. The grippers act on a very small contact area, generating huge local stresses. Once the thin-walled casing is subjected to local stress, the wall surface is prone to instability and distortion. The deformed flywheel casing not only affects the overall assembly accuracy of the engine, but also, during subsequent operation, severe vibrations and torque fluctuations will create stress concentration points in the casing, which can easily lead to fatigue cracking over time. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a machining fixture for anti-deformation flywheel housing, so as to solve the technical problem that the existing technology uses clamps for clamping, which leads to deformation of the housing.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A deformation-resistant flywheel housing machining fixture includes an inner support assembly located inside the flywheel housing and an outer support assembly located around the flywheel housing. The inner and outer support assemblies together clamp and fix the flywheel housing. It also includes a worktable with a limiting through hole on its panel. The inner support assembly includes a central rod with a constricted diameter section at its bottom, which passes through the limiting through hole. A limiting base plate is provided on the bottom surface of the constricted section. The central rod is fixed to the panel by a diagonal brace. A rotating cylinder is fitted around the constricted section, rotatably connected to it. External threads are provided on the outer surface of the top part of the rotating cylinder, forming a threaded section. A threaded sleeve is threadedly connected to the outer surface of the threaded section. A fixing ring is fitted on the top of the central rod. The inner support assembly also includes arc-shaped support plates evenly distributed around the central rod. A positioning plate is hinged to the threaded sleeve via a first connecting rod, and a positioning plate is hinged to the fixing ring via a second connecting rod.

[0007] Furthermore, the upper and lower ends of the constricted section are exposed on the upper and lower surfaces of the panel, respectively;

[0008] Furthermore, the threaded section is located above the panel;

[0009] Furthermore, multiple pairs of fixing ears are provided opposite to each other on the outer surface of the fixing ring and the outer surface of the threaded sleeve. The multiple pairs of fixing ears are evenly distributed along the circumferential direction, and a positioning shaft is provided between each pair of fixing ears.

[0010] Furthermore, the outer plate surface of the support plate away from the central rod is arc-shaped, and the outer plate surface of the support plate matches the inner wall of the flywheel housing, so that the support plate and the flywheel housing fit tightly together. There is a gap between the support plate and the central rod. In addition, there is also a gap between the support plate and the panel.

[0011] Furthermore, a single support plate is directly opposite a pair of fixed ears, and a positioning plate extending vertically is provided at the center of the inner side of the support plate. The top of the positioning plate has an axle hole, and the bottom of the positioning plate has an elongated sliding hole that extends vertically and is directly opposite the axle hole.

[0012] Furthermore, there are two first connecting rods, which are respectively set on both sides of the positioning plate. Both ends of the first connecting rod have rotating holes. The rotating hole at the top of the first connecting rod is aligned with the shaft hole at the top of the positioning plate. A rotating shaft passes through the rotating hole at the top and the shaft hole. The rotating hole at the bottom of the first connecting rod is matched with the positioning shaft between the fixing lug on the outside of the threaded sleeve and the two are rotatably connected.

[0013] Furthermore, there are two second connecting rods, which are respectively set on both sides of the positioning plate. The second connecting rods are intersecting with the first connecting rods, and the first connecting rods are located between the two second connecting rods. Both ends of the second connecting rods also have rotating holes. The rotating hole at the top of the second connecting rod is fitted around the positioning shaft between the fixing ears on the outside of the fixing ring, thereby realizing the rotational connection between the two. The rotating hole at the bottom of the second connecting rod is directly opposite the sliding hole, and a rotating shaft passes through the rotating hole and the sliding hole at the bottom.

[0014] Furthermore, the outer support component includes a limiting ring, with a gap between the limiting ring and the inner support component. An annular airbag is fixed on the inner side of the limiting ring. An air pump is provided on one side of the limiting ring, and an air guide tube is provided at the air outlet of the air pump. The air guide tube passes through the limiting ring and is connected to the airbag. An air nozzle is provided on the airbag, and the airbag is deflated through the air nozzle.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) Compared with the prior art, the flywheel housing can be supported and fixed from the inside out by the internal support component. On the one hand, the contact area between the support plate and the flywheel housing is large, which can avoid local deformation of the flywheel housing during the clamping process due to stress concentration. On the other hand, the operation is simple and can achieve internal support fixation in a short time, thereby improving processing efficiency.

[0017] (2) The flywheel housing is clamped and fixed by the combined action of the inner support component and the outer support component, and the deformation resistance of the flywheel housing edge can be effectively improved by the outer support component, ensuring the structural stability of the flywheel housing edge. Attached Figure Description

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0019] Figure 1 This is an overall schematic diagram of the anti-deformation flywheel housing machining fixture in Embodiment 1 of this utility model;

[0020] Figure 2 This is a cross-sectional view of the anti-deformation flywheel housing machining fixture in Embodiment 1 of this utility model;

[0021] Figure 3 for Figure 1 Enlarged view at point A1;

[0022] Figure 4 for Figure 2 Enlarged view at point A2;

[0023] Figure 5 for Figure 4 Enlarged view at point A3;

[0024] Figure 6 for Figure 4 Enlarged view at A4 in the middle;

[0025] Figure 7 for Figure 4 Enlarged view at point A5 in the middle.

[0026] The following labels are shown in the attached diagram:

[0027] Workbench 1, panel 101, limiting through hole 102, inner support assembly 2, center rod 201, diameter reduction section 2011, limiting base plate 2012, diagonal brace 202, rotating cylinder 203, threaded section 2031, threaded sleeve 204, handle 205, fixing ring 206, fixing ear 207, support plate 208, positioning plate 209, shaft hole 2091, sliding hole 2092, first connecting rod 210, second connecting rod 211, positioning shaft 212, rotating shaft 213, outer support assembly 3, limiting ring 301, airbag 302, air pump 303, air nozzle 304. Detailed Implementation

[0028] Example 1, specifically as follows: Figures 1-7 As shown.

[0029] A tooling for processing a flywheel housing that prevents deformation includes an inner support assembly 2 located inside the flywheel housing and an outer support assembly 3 located on the periphery of the flywheel housing. The inner support assembly 2 and the outer support assembly 3 work together to clamp and fix the flywheel housing.

[0030] A machining fixture for an anti-deformation flywheel housing also includes a worktable 1. The worktable 1 includes a rectangular panel 101 and a support vertical rod located at the apex of the panel 101, which supports the panel 101. A limiting through hole 102 is opened at the center of the rectangular panel 101.

[0031] The inner support assembly 2 includes a vertical central rod 201. The bottom portion of the central rod 201 has a uniformly tapered diameter, forming a radially narrowed section 2011. The radially narrowed section 2011 passes vertically downward through the limiting through hole 102, and its upper and lower ends protrude from the upper and lower surfaces of the panel 101, respectively. It is necessary to explain in detail that the diameter of the radially narrowed section 2011 is smaller than the inner diameter of the limiting through hole 102, and the axis of the central rod 201 coincides with the axis of the limiting through hole 102.

[0032] A coaxial limiting base plate 2012 is welded to the bottom surface of the radial reduction section 2011. The diameter of the limiting base plate 2012 is larger than the diameter of the radial reduction section 2011.

[0033] The center rod 201 is provided with a diagonal brace 202 in the middle. The diagonal brace 202 is evenly distributed along the circumference. Its bottom end is welded and fixed to the panel 101, and its top end is welded and fixed to the outer wall of the center rod 201. In this embodiment, a total of 3 diagonal braces 202 are provided, and the angle between the diagonal brace 202 and the horizontal plane is 65°. The center rod 201 and the panel 101 are fixed by the diagonal brace 202.

[0034] A rotating cylinder 203 of equal length is sleeved around the diameter reduction section 2011. The rotating cylinder 203 is rotatably connected to the diameter reduction section 2011. Specifically, the inner diameter of the rotating cylinder 203 is the same as the diameter of the diameter reduction section 2011, and the outer diameter of the rotating cylinder 203 is the same as the inner diameter of the limiting through hole 102. In addition, the bottom surface of the rotating cylinder 203 is in contact with the upper surface of the limiting base plate 2012. The limiting base plate 2012 supports and limits the rotating cylinder 203 to prevent the rotating cylinder 203 from falling off in the vertical direction.

[0035] The outer surface of the top portion of the rotating cylinder 203 has external threads, forming a threaded section 2031. Notably, the threaded section 2031 is located above the panel 101. A threaded sleeve 204 is fitted around the threaded section 2031, and the two are threadedly connected. A handle 205 is provided at the bottom end of the rotating cylinder 203. The handles 205 are evenly distributed along the circumference and are welded and fixed to the outer surface of the rotating cylinder 203.

[0036] A fixing ring 206 is fitted on the top of the center rod 201. The inner diameter of the fixing ring 206 is the same as the diameter of the center rod 201. The fixing ring 206 is welded to the center rod 201. It is necessary to further explain that the outer diameter of the fixing ring 206 is the same as the outer diameter of the threaded sleeve 204.

[0037] Multiple pairs of fixing ears 207 are provided opposite to each other on the outer surface of the fixing ring 206 and the outer surface of the threaded sleeve 204. The multiple pairs of fixing ears 207 are evenly distributed along the circumferential direction. In this embodiment, a total of 3 pairs of fixing ears 207 are provided. A positioning shaft 212 is provided between each pair of fixing ears 207. The positioning shaft 212 extends in the horizontal direction. The two ends of the positioning shaft 212 are welded and fixed to the center position of the inner plate of the fixing ears 207 on both sides respectively.

[0038] The inner support assembly 2 also includes arc-shaped support plates 208 evenly distributed around the central rod 201. The outer surface of the support plate 208 away from the central rod 20 is arc-shaped, and the outer surface of the support plate 208 matches the inner wall of the flywheel housing, thereby ensuring a tight fit between the support plate 208 and the flywheel housing. A gap is left between the support plate 208 and the central rod 201, and a gap is also left between the support plate 208 and the panel 101.

[0039] A single support plate 208 is directly opposite a pair of fixing ears 207. A positioning plate 209 extending vertically is provided at the center of the inner side of the support plate 208. The side of the positioning plate 209 is directly opposite the pair of fixing ears 207. The positioning plate 209 is welded to the inner side of the support plate 208. A shaft hole 2091 is provided at the top of the positioning plate 209, and a long strip-shaped sliding hole 2092 is provided at the bottom of the positioning plate 209. The sliding hole 2092 extends vertically and is directly opposite the shaft hole 2091.

[0040] The positioning plate 209 and the threaded sleeve 204 are hinged by an inclined first connecting rod 210. Specifically, there are two first connecting rods 210, which are respectively set on both sides of the positioning plate 209. Both ends of the first connecting rod 210 have rotating holes. The rotating hole at the top of the first connecting rod is directly opposite to the shaft hole 2091 at the top of the positioning plate 209. A rotating shaft 213 is inserted into the rotating hole at the top and the shaft hole 2091. The rotating hole at the bottom of the first connecting rod 210 is adapted to the positioning shaft 212 between the fixing lug 207 on the outside of the threaded sleeve 204 and the two are rotatably connected.

[0041] The positioning plate 209 and the fixing ring 206 are hinged together by an inclined second connecting rod 211. Specifically, there are two second connecting rods 211, one on each side of the positioning plate 209. It is worth explaining in detail that the second connecting rod 211 and the first connecting rod 210 are intersecting, with the first connecting rod 210 located between the two second connecting rods 211. Both ends of the second connecting rod 211 also have rotating holes. The rotating hole at the top of the second connecting rod 211 is fitted around the positioning shaft 212 between the fixing ears 207 on the outside of the fixing ring 206, thereby realizing the rotatable connection between the two. The rotating hole at the bottom of the second connecting rod 211 is directly opposite the sliding hole 2092, and a rotating shaft 213 passes through the rotating hole and the sliding hole 2092 at the bottom.

[0042] In addition, a pivot 213 is provided at the intersection of the adjacent first link 210 and second link 211 to further improve the stability between the first link 210 and the second link 211.

[0043] In use, first, the flywheel housing is fitted around the inner support assembly 2. At this time, the inner wall of the flywheel housing and the support plate 208 are in a non-contact state. Then, the handle 205 is turned to drive the rotating cylinder 203 to rotate synchronously. The rotation of the rotating cylinder 203 drives the threaded sleeve 204 to move upward. During the upward movement of the threaded sleeve 204, the first connecting rod 210 and the second connecting rod 211 rotate, causing the support plate 208 to expand radially outward. Finally, the outwardly expanded support plate 208 abuts against the inner wall of the flywheel housing, thereby achieving internal support and fixation of the flywheel housing.

[0044] The inner support component 2 can support and fix the flywheel housing from the inside out. On the one hand, the support plate 208 has a large contact area with the flywheel housing, which can avoid local deformation of the flywheel housing during the clamping process due to stress concentration. On the other hand, it is simple to operate and can achieve inner support fixation in a short time, thereby improving processing efficiency.

[0045] However, due to the low strength at the edge of the flywheel housing, the inner support assembly 2 alone cannot guarantee the deformation resistance at the edge. Therefore, in this embodiment, an outer support assembly 3 is also provided around the inner support assembly 2.

[0046] The outer support component 3 includes a limiting ring 301, with a gap between the limiting ring 301 and the inner support component 2. An annular airbag 302 is glued to the inner side of the limiting ring 301. An air pump 303 is provided on one side of the limiting ring 301. An air guide tube is provided at the air outlet of the air pump 303. The air guide tube passes through the limiting ring 301 and is connected to the airbag 302. An air nozzle 304 is provided on the airbag 302, and the airbag 302 is deflated through the air nozzle 304.

[0047] In use, firstly, the flywheel housing is internally supported by the inner support assembly 2. Then, the air pump 303 inflates the airbag 302, causing it to deform and contact the edge of the flywheel housing, thus forming an external support at the edge of the flywheel housing. The combined action of the inner support assembly 2 and the outer support assembly 3 clamps and fixes the flywheel housing. Furthermore, the outer support assembly 3 effectively enhances the deformation resistance at the edge of the flywheel housing, ensuring its structural stability.

[0048] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A tooling for machining a deformation-resistant flywheel housing, characterized in that, The system includes an inner support assembly located inside the flywheel housing and an outer support assembly located around the flywheel housing, which together clamp and fix the flywheel housing. It also includes a worktable with a limiting through hole on its panel. The inner support assembly includes a central rod with a constricted section at its bottom, which passes through the limiting through hole. A limiting base plate is provided on the bottom surface of the constricted section. The central rod is fixed to the panel by diagonal bracing. A rotating cylinder is fitted around the constricted section, rotatably connected to it. External threads are provided on the outer surface of the top part of the rotating cylinder, forming a threaded section. A threaded sleeve is threadedly connected to the threaded section. A fixing ring is fitted on the top of the central rod. The inner support assembly also includes arc-shaped support plates evenly distributed around the central rod. A positioning plate is hinged to the threaded sleeve via a first connecting rod, and a positioning plate is hinged to the fixing ring via a second connecting rod.

2. The anti-deformation flywheel housing machining fixture according to claim 1, characterized in that, The upper and lower ends of the constricted section are exposed on the upper and lower surfaces of the panel, respectively.

3. The anti-deformation flywheel housing machining fixture according to claim 2, characterized in that, The threaded section is located above the panel.

4. The anti-deformation flywheel housing machining fixture according to claim 3, characterized in that, Multiple pairs of fixing ears are provided on the outer surface of the fixing ring and the outer surface of the threaded sleeve. The multiple pairs of fixing ears are evenly distributed along the circumferential direction, and a positioning shaft is provided between each pair of fixing ears.

5. The anti-deformation flywheel housing machining fixture according to claim 4, characterized in that, The outer surface of the support plate away from the center rod is arc-shaped, and the outer surface of the support plate matches the inner wall of the flywheel housing, so that the support plate and the flywheel housing fit tightly together. There is a gap between the support plate and the center rod, and there is also a gap between the support plate and the panel.

6. The anti-deformation flywheel housing machining fixture according to claim 5, characterized in that, A single support plate is directly opposite a pair of fixed ears. A positioning plate extending vertically is provided at the center of the inner side of the support plate. A shaft hole is provided at the top of the positioning plate, and a long sliding hole is provided at the bottom of the positioning plate. The sliding hole extends vertically and is directly opposite the shaft hole.

7. The anti-deformation flywheel housing machining fixture according to claim 6, characterized in that, There are two first connecting rods, which are respectively set on both sides of the positioning plate. Both ends of the first connecting rod have rotating holes. The rotating hole at the top of the first connecting rod is aligned with the shaft hole at the top of the positioning plate. A rotating shaft passes through the rotating hole at the top and the shaft hole. The rotating hole at the bottom of the first connecting rod is matched with the positioning shaft between the fixing lug on the outside of the threaded sleeve and the two are rotatably connected.

8. The anti-deformation flywheel housing machining fixture according to claim 7, characterized in that, There are two second connecting rods, which are respectively set on both sides of the positioning plate. The second connecting rod and the first connecting rod are intersected, and the first connecting rod is located between the two second connecting rods. Both ends of the second connecting rod also have rotating holes. The rotating hole at the top of the second connecting rod is fitted around the positioning shaft between the fixing ears on the outside of the fixing ring, thereby realizing the rotational connection between the two. The rotating hole at the bottom of the second connecting rod is directly opposite the sliding hole, and a rotating shaft passes through the rotating hole and the sliding hole at the bottom.

9. The anti-deformation flywheel housing machining fixture according to any one of claims 1-8, characterized in that, The outer support assembly includes a limiting ring, with a gap between the limiting ring and the inner support assembly. An annular airbag is fixed on the inner side of the limiting ring. An air pump is provided on one side of the limiting ring, and an air guide tube is provided at the air outlet of the air pump. The air guide tube passes through the limiting ring and is connected to the airbag. An air nozzle is provided on the airbag, and the airbag is deflated through the air nozzle.

Images