Flywheel housing machining fixture

Abstract

The utility model relates to the technical field of clamp, disclose a kind of flywheel housing machining clamp, including installation panel, be set on the horizontal clamping component and vertical limiting component of installation panel, the two sides of installation panel length direction are all set with first sliding slot, horizontal clamping component includes the symmetric setting arc-shaped clamping plate;Vertical limiting component includes the installation hole being set on the two sides of installation panel width direction, installation hole is located the middle of two sides clamping plate, guide shaft is threadedly connected in installation hole, the top end of guide shaft is equipped with two interval limit block, interval is provided with pressing plate, and one end of pressing plate is rotatably connected with guide shaft;Flywheel housing is realized horizontal clamping fixed by horizontal clamping component, vertical limiting component is set, and vertical limiting is formed to flywheel housing, prevent flywheel housing from the displacement of vertical direction in processing process, effectively avoid the deviation of machining accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, specifically relating to a flywheel housing machining fixture. Background Technology

[0002] The flywheel housing is one of the engine components. Located between the engine block and the gearbox, the flywheel housing is installed outside the engine flywheel and is fixedly connected to the engine block and gearbox. Its function is to connect the engine and the gearbox, bear part of the weight of the engine and gearbox, protect the clutch and flywheel, cover the flywheel through the flywheel chamber for safety protection, and also serve as a support component of the engine. Its machining quality directly affects the engine performance.

[0003] During the machining process (such as grinding and drilling), the flywheel housing needs to be positioned and clamped. In this regard, the existing clamping devices usually use bolts, nuts and clamping plates to clamp the flywheel housing, which is cumbersome and results in low machining efficiency. Secondly, the clamping force is difficult to control. When the clamping force is too large, it can easily cause deformation of the flywheel housing. Thirdly, there is a lack of vertical limit, which causes the flywheel housing to move up and down during the machining process, resulting in deviations in machining accuracy. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a flywheel housing machining fixture to solve the technical problem that the clamping device in the prior art lacks vertical limiting, which leads to deviations in machining accuracy.

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

[0006] A flywheel housing machining fixture includes a mounting panel, a horizontal clamping assembly and a vertical limiting assembly disposed on the mounting panel. The mounting panel has first sliding grooves on both sides along its length. The horizontal clamping assembly includes symmetrically arranged arc-shaped clamping plates. A first slider is fixedly connected to the bottom surface of the clamping plates and slidably connected to the first sliding grooves. A reversible motor is disposed directly below the mounting panel. A gear is sleeved on the top of the output shaft of the reversible motor. Racks are disposed on both sides of the gear, meshing with the gear. The ends of the racks furthest from the gear are fixedly connected to the first slider via connecting blocks. The vertical limiting assembly includes mounting holes on both sides of the mounting panel along its width. The mounting holes are located in the middle of the clamping plates on both sides. A guide shaft is threaded into the mounting holes. Two spaced limiting blocks are sleeved on the top of the guide shaft. A pressure plate is disposed at the space between the blocks, and one end of the pressure plate is rotatably connected to the guide shaft.

[0007] Furthermore, the clamping plates correspond one-to-one with the first sliding grooves and the first sliding grooves are opposite to the middle of the clamping plates. The bottom surface of the clamping plates is in smooth contact with the upper surface of the mounting panel, and the inner surfaces of the clamping plates on both sides are curved surfaces.

[0008] Furthermore, the axis of the reversible motor output shaft coincides with the center of the virtual circle formed by the inner arc surfaces of the two clamping plates. A connecting groove is provided on the lower surface of the mounting plate, which is directly opposite the output shaft. The inner diameter of the connecting groove is larger than the diameter of the output shaft. The top end of the output shaft extends into the connecting groove, and the two are rotatably connected by a bearing.

[0009] Furthermore, the extending direction of the rack is consistent with the extending direction of the first sliding groove;

[0010] Furthermore, a support assembly is provided on the outer side of the rack. The support assembly includes a support frame that is fixedly connected to the lower surface of the mounting panel. The support frame includes a vertical plate and a horizontal plate located at the bottom end of the vertical plate, so that the cross-section of the support frame is "L" shaped. The support frame partially wraps around the rack, and there is a gap between the support frame and the rack. The upper surface of the horizontal plate is provided with a hemispherical sliding protrusion, which makes point contact with the bottom surface of the rack.

[0011] Furthermore, a disc-shaped fixing plate is fixedly connected to the bottom end of the guide shaft, and handles are evenly distributed along the circumference on the side of the fixing plate.

[0012] The beneficial effects of this utility model are as follows:

[0013] Compared with existing technologies, the flywheel housing is horizontally clamped and fixed by a horizontal clamping assembly. Rotating the handle causes the guide shaft to move downward until the pressure plate contacts the top surface of the flywheel housing. By setting a vertical limiting assembly, the flywheel housing is vertically limited, preventing vertical displacement of the flywheel housing during processing and effectively avoiding deviations in processing accuracy. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0015] Figure 1 This is a schematic diagram (first perspective) of the flywheel housing machining fixture in Embodiment 1 of this utility model.

[0016] Figure 2 This is a schematic diagram (second perspective) of the flywheel housing machining fixture in Embodiment 1 of this utility model.

[0017] Figure 3 This is a cross-sectional view of the flywheel housing machining fixture in Embodiment 1 of this utility model;

[0018] Figure 4 for Figure 1 Enlarged view at point A1;

[0019] Figure 5 for Figure 1 Enlarged view at point A2;

[0020] Figure 6 for Figure 3 Enlarged view of section A3 in the middle.

[0021] The following labels are shown in the attached diagram:

[0022] Mounting panel 1, first sliding groove 101, connecting groove 102, second sliding groove 103, horizontal clamping assembly 2, clamping plate 201, first slider 202, reversible motor 203, output shaft 2031, bearing 204, gear 205, rack 206, connecting block 207, support frame 208, sliding protrusion 209, second slider 210, vertical limiting assembly 3, mounting hole 301, guide shaft 302, limiting block 303, pressure plate 304, fixing plate 305, handle 306, limiting cylinder 307. Detailed Implementation

[0023] Example 1, specifically as follows: Figures 1-6 As shown.

[0024] A flywheel housing machining fixture includes a mounting panel 1, a horizontal clamping assembly 2 disposed on the mounting panel 1, and a vertical limiting assembly 3.

[0025] like Figure 1 As shown, the mounting panel 1 is rectangular. The mounting panel 1 has a first sliding groove 101 on both sides along its length. The first sliding groove 101 extends along the length of the mounting panel 1 and is located at the middle position in the width direction of the mounting panel 1.

[0026] The horizontal clamping assembly 2 includes symmetrically arranged arc-shaped clamping plates 201. Each clamping plate 201 corresponds one-to-one with a first sliding groove 101, and the first sliding groove 101 is opposite to the center of the clamping plate 201. The bottom surface of the clamping plate 201 is in smooth contact with the upper surface of the mounting panel 1. The inner surfaces of the two clamping plates 201 are arc-shaped. Notably, the inner arc surfaces of the two clamping plates 201 together form a virtual circle, allowing the clamping plate 201 to fully contact the outer wall of the cylindrical flywheel housing.

[0027] The bottom surface of the clamping plate 201 is fixedly connected to a first slider 202, which is slidably connected to the first sliding groove 101. The first slider 202 extends vertically and protrudes from the lower surface of the mounting panel 1.

[0028] A reversible motor 203 is located directly below the mounting panel 1. The reversible motor 203 is fixedly connected to the ground, and the axis of the output shaft 2031 of the reversible motor 203 coincides with the center of the virtual circle formed by the inner arc surfaces of the two clamping plates 201. A circular connecting groove 102 is formed on the lower surface of the mounting plate 1, which is directly opposite the output shaft 2031. The inner diameter of the connecting groove 102 is larger than the diameter of the output shaft 2031, and the top end of the output shaft 2031 extends into the connecting groove 102. The two are rotatably connected by a bearing 204. Specifically, the bearing 204 is sleeved on the top end of the output shaft 2031, the inner ring of the bearing 204 is keyed to the output shaft 203, and the outer ring of the bearing 204 is interference-fitted with the groove wall of the connecting groove 102.

[0029] A gear 205 is fitted onto the top of the output shaft 2031. The axis of the gear 205 coincides with the axis of the output shaft 2031. A gap is left between the gear 205 and the mounting panel 1 to prevent friction between the gear 205 and the mounting panel 1 during rotation. Racks 206 are provided on both sides of the gear 205, meshing with it. The extending direction of the racks 206 is consistent with the extending direction of the first sliding groove 101. The end of the rack 206 away from the gear 205 is fixedly connected to the first slider 202 via a connecting block 207. Specifically, the cuboid connecting block 207 is horizontal, with its inner end welded to the first slider 202 and its outer end welded to the rack 206.

[0030] Since only one end of the rack 206 is fixed to the connecting block 207, uneven stress during long-term operation can cause the rack 206 to bend and deform. Therefore, in this embodiment, a support assembly is provided on the outer side of the rack 206 to provide vertical support. Figure 6 As shown, the support assembly includes a support frame 208 welded and fixed to the lower surface of the mounting panel 1. The support frame 208 includes a vertical plate and a horizontal plate located at the bottom end of the vertical plate, so that the cross-section of the support frame 208 is "L" shaped. The support frame 208 partially encloses the rack 206, but there is a gap between the support frame 208 and the rack 206. The upper surface of the horizontal plate is provided with a hemispherical sliding protrusion 209. The sliding protrusion 209 forms a point contact with the bottom surface of the rack 206. The support frame 208 supports the rack 206 while reducing the sliding friction between the two.

[0031] Second sliding grooves 103 are provided on both sides of the first sliding groove 101. The second sliding grooves 103 on both sides are symmetrically distributed about the first sliding groove 101 as an axis of symmetry. The size of the second sliding grooves 103 is the same as that of the first sliding groove 101. The second sliding grooves 103 also penetrate the mounting panel 1 vertically. Second sliders 210 are fixedly connected to both ends of the bottom surface of the clamping plate 201. The second sliders 210 are slidably connected to the second sliding grooves 103. It is necessary to explain in detail that in this embodiment, the second sliders 210 are cylindrical, and their side surfaces form line contact with the inner walls of the second sliding grooves 103, reducing the sliding friction between them. By providing the second sliding grooves 103 and the second sliders 210 on the bottom surface of the clamping plate 201, the stability of the clamping plate 201 during the sliding process can be effectively improved.

[0032] In use, first, the flywheel housing to be processed is placed between the two clamping plates 201. Then, the reversible motor 203 is turned on, and the output shaft 2031 drives the gear 205 to rotate synchronously. Under the drive of the gear 205, the racks 206 on both sides move towards each other, thereby driving the clamping plates 201 on both sides to move towards each other. The inner arc surface of the clamping plate 201 contacts and clamps the outer wall of the flywheel housing, thereby positioning the flywheel housing.

[0033] The vertical limiting component 3 includes mounting holes 301 on both sides of the mounting panel 1 in the width direction, with the mounting holes 301 located in the middle of the two clamping plates 201. A guide shaft 302 is internally threaded into the mounting holes 301, with both ends of the guide shaft 302 protruding from the upper and lower surfaces of the mounting panel 1, respectively. Two annular limiting blocks 303 are fitted onto the top of the guide shaft 302, with a gap between the limiting blocks 303. A pressure plate 304 is provided at the gap, with one end of the pressure plate 304 rotatably connected to the guide shaft 302. The thickness of the pressure plate 304 is the same as the height of the gap.

[0034] A disc-shaped fixing plate 305 is fixedly connected to the bottom end of the guide shaft 302. Handles 306 are evenly distributed along the circumference on the side of the fixing plate 305. A limiting cylinder 307 is also provided around the guide shaft 302. The bottom surface of the limiting cylinder 307 is welded and fixed to the top surface of the mounting panel 1. The limiting cylinder 307 provides lateral support and limiting for the guide shaft 302 to prevent bending deformation.

[0035] In use, firstly, the flywheel housing is horizontally clamped and fixed using the horizontal clamping assembly 2. Then, the pressure plate 304 is rotated so that it is positioned above the flywheel housing. Next, the handle is rotated to move the guide shaft 302 downwards until the pressure plate 304 contacts the top surface of the flywheel housing. By setting the vertical limiting assembly 3, the flywheel housing is vertically limited, preventing vertical displacement of the flywheel housing during processing and effectively avoiding deviations in processing accuracy.

[0036] 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 flywheel housing machining fixture, characterized in that, The device includes a mounting panel, a horizontal clamping assembly mounted on the mounting panel, and a vertical limiting assembly. The mounting panel has first sliding grooves on both sides along its length. The horizontal clamping assembly includes symmetrically arranged arc-shaped clamping plates. A first slider is fixedly connected to the bottom surface of the clamping plates and slidably connected to the first sliding grooves. A reversible motor is located directly below the mounting panel. A gear is fitted onto the top of the output shaft of the reversible motor. Racks are provided on both sides of the gear, meshing with the gear. The ends of the racks furthest from the gear are fixedly connected to the first slider via connecting blocks. The vertical limiting assembly includes mounting holes on both sides of the mounting panel along its width. The mounting holes are located in the middle of the clamping plates on both sides. A guide shaft is threaded into the mounting holes. Two spaced limiting blocks are fitted onto the top of the guide shaft, with pressure plates at the intervals. One end of the pressure plate is rotatably connected to the guide shaft.

2. The flywheel housing machining fixture according to claim 1, characterized in that, The clamping plates correspond one-to-one with the first sliding grooves, and the first sliding grooves are opposite to the middle of the clamping plates. The bottom surface of the clamping plates is in smooth contact with the upper surface of the mounting panel, and the inner surfaces of the clamping plates on both sides are curved surfaces.

3. The flywheel housing machining fixture according to claim 2, characterized in that, The axis of the reversible motor output shaft coincides with the center of the virtual circle formed by the inner arc surfaces of the clamping plates on both sides. A connecting groove is provided on the lower surface of the mounting plate, which is directly opposite the output shaft. The inner diameter of the connecting groove is larger than the diameter of the output shaft. The top end of the output shaft extends into the connecting groove, and the two are rotatably connected by a bearing.

4. The flywheel housing machining fixture according to claim 3, characterized in that, The rack extends in the same direction as the first sliding groove.

5. The flywheel housing machining fixture according to claim 4, characterized in that, A support assembly is provided on the outer side of the rack. The support assembly includes a support frame that is fixedly connected to the lower surface of the mounting panel. The support frame includes a vertical plate and a horizontal plate located at the bottom end of the vertical plate, so that the cross-section of the support frame is "L" shaped. The support frame partially wraps around the rack, and there is a gap between the support frame and the rack. The upper surface of the horizontal plate is provided with a hemispherical sliding protrusion, which makes point contact with the bottom surface of the rack.

6. The flywheel housing machining fixture according to claim 5, characterized in that, A disc-shaped fixing plate is fixedly connected to the bottom end of the guide shaft, and handles are evenly distributed along the circumference on the side of the fixing plate.

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