A shaft machining jig

Abstract

The utility model belongs to the technical field of processing fixture, especially relates to a pivot processing fixture. A pivot processing fixture, including bottom plate, isohypse column, support plate, positioning plate, side push mechanism, push mechanism, press mechanism and apron, the positioning block is set to the baffle in the positioning plate one end and sets the locating block along its length direction, side push mechanism includes side push cylinder and sets the side push plate on the telescopic spare of side push cylinder, push mechanism includes push cylinder and sets the push plate on the telescopic spare of push cylinder, press mechanism includes press cylinder and sets the press plate on the telescopic spare of press cylinder, and the apron is used for the pressure joint pivot to carry out horizontal positioning, when the pivot is placed on the positioning plate, the apron pressure joint is on the pivot upper end face, the side push mechanism and push mechanism make pivot abut respectively locating block and baffle, after taking down the apron, the press mechanism pressure joint pivot. The utility model simple structure and can realize to the stable, high accuracy clamping of pivot.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, and in particular relates to a rotating shaft machining fixture. Background Technology

[0002] like Figure 11 As shown, the hinge 8 is a long, narrow structure for electronic products such as laptops. Its lower end face is flat, and a curved surface 82 connects it to the vertical end face 81. A connecting protrusion 83 is integrally formed on the hinge 8, and its upper end face is flat. During actual machining of the hinge 8, it needs to be fixed upwards to allow for milling and drilling of the inner cavity. Therefore, a machining fixture is required to fix the hinge 8 upwards. In the prior art, to ensure stable and accurate clamping of the hinge 8, a contour-following machining fixture is designed, where the hinge 8 is placed in a contour groove and fixed using a clamping tool. However, due to the long length of the hinge 8, manual clamping is time-consuming, and machining the contour structure also takes a considerable amount of time. In the existing technology, cylinders are also used to clamp the rotating shaft 8 laterally. However, since the rotating shaft 8 is long and narrow, when it is laterally positioned and fixed, the upper end face of the rotating shaft 8 is difficult to keep horizontal due to the narrow lower end face and the presence of the arc surface 82, which reduces the positioning and machining accuracy of the rotating shaft 8. Utility Model Content

[0003] To address the technical problems existing in the prior art, this application provides a simple rotating shaft machining fixture that can stably and precisely clamp the rotating shaft.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A machining fixture for rotating shafts includes a base plate, a contour post disposed on the upper surface of the base plate, and a support plate disposed on the contour post; further comprising: Positioning plate; fixedly connected to the upper surface of the support plate, with a stop block at one end and a positioning block along its length; Side push mechanism: includes a side push cylinder fixedly connected to a support plate on one side of the positioning plate and a side push plate provided on the telescopic part of the side push cylinder; Pushing mechanism: includes a pushing cylinder fixedly connected to a support plate opposite to the stop block and a pushing plate provided on the telescopic part of the pushing cylinder; The pressing mechanism includes a pressing cylinder fixedly connected to the support plate and a pressing plate provided on the telescopic part of the pressing cylinder; Cover plate: Used to press the shaft to position it horizontally; When the rotating shaft is placed on the positioning plate inside the positioning block and the stop block, the cover plate is pressed against the upper end face of the rotating shaft. The side pushing mechanism and the top pushing mechanism cause the rotating shaft to abut against the positioning block and the stop block respectively. After the cover plate is removed, the pressing mechanism presses against the rotating shaft.

[0005] Preferably, positioning blocks are provided on both sides of the upper surface of the positioning plate along its length, and the rotating shaft is placed between the positioning blocks on both sides.

[0006] Preferably, an avoidance groove is provided on one side of the positioning plate, and the side push plate can slide down into the avoidance groove and abut against the rotating shaft under the drive of the side push cylinder.

[0007] Preferably, a clearance groove is provided on the support plate outside the positioning plate, the pressing cylinder is vertically fixedly connected to the lower end face of the support plate at the clearance groove, and the pressing plate is slidably disposed in the clearance groove.

[0008] Preferably, the pressing cylinder is a rotary pressing cylinder. When it is necessary to press the rotating shaft, the pressing cylinder drives the pressing plate to rotate to be perpendicular to the rotating shaft and move down to press the rotating shaft. When it is not necessary to press the rotating shaft, the pressing cylinder drives the pressing plate to move up to disengage from the rotating shaft and rotate to be parallel to the rotating shaft.

[0009] Preferably, the lower pressure plate has a T-shaped structure, and a support block is provided on the side away from the positioning plate's clearance groove. When the rotating shaft needs to be pressed, one side of the horizontal end of the lower pressure plate presses against the upper surface of the rotating shaft, and the other side presses against the support block.

[0010] Preferably, a cover plate through groove is provided on the cover plate corresponding to the lower pressure plate. When the cover plate is placed on the rotating shaft, the lower pressure plate passes through the corresponding cover plate through groove.

[0011] Preferably, an observation through hole is provided in the middle of the cover plate.

[0012] Preferably, slots for taking out and putting in are provided on both sides of the cover plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention, by setting a cover plate, allows the upper end face of the rotating shaft to be positioned and fixed in the horizontal direction through a side-pushing mechanism and a top-pushing mechanism when the shaft is in a horizontal state. After the cover plate is removed, the rotating shaft is fixed in the vertical direction through a pressing mechanism. Compared with the prior art, this invention has a simple structure and can achieve stable and high-precision clamping of the rotating shaft. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure when a rotating shaft is placed on this utility model and the rotating shaft is not pressed down.

[0016] Figure 3 for Figure 2 A top-view structural diagram.

[0017] Figure 4 This is a schematic diagram of the structure of this utility model without the cover plate.

[0018] Figure 5 This is a schematic diagram of the connection structure of the support plate and positioning plate of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure when the rotating shaft is placed on the positioning plate of this utility model.

[0020] Figure 7 This is a schematic diagram of the positioning plate of this utility model.

[0021] Figure 8 This is a schematic diagram of the pressing mechanism of this utility model.

[0022] Figure 9 This is a schematic diagram of the cover plate of this utility model.

[0023] Figure 10 This is a schematic diagram of the structure when a rotating shaft is placed on the present invention and the rotating shaft is pressed tightly.

[0024] Figure 11 This is a schematic diagram of the existing rotating shaft.

[0025] In the diagram: 1. Base plate; 11. Contour column. 2. Support plate; 21. Clearance slot; 22. Support block. 3. Positioning plate; 31. Stop block; 32. Positioning block; 33. Clearance groove. 4. Side thrust mechanism; 41. Side thrust cylinder; 42. Side thrust plate. 5. Pushing mechanism; 51. Pushing cylinder; 52. Pushing plate. 6. Pressing mechanism, 61. Pressing cylinder, 62. Pressing plate, 7. Cover plate; 71. Cover plate through slot; 72. Observation through hole; 73. Removal through slot. 8. Rotating shaft; 81. Vertical end face; 82. Arc surface; 83. Connecting protrusion. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Example

[0028] See appendix Figure 1 , 2 As shown in Figure 3, a rotating shaft machining fixture includes a base plate 1, four equal-height columns 11 fixedly connected to the upper end face of the base plate 1 by bolts, a support plate 2 horizontally fixedly connected to the upper end face of the equal-height columns 11 by bolts, a positioning plate 3 fixedly connected to the support plate 2, a side-pushing mechanism 4 provided on one side of the positioning plate 3, a top-pushing mechanism 5 provided at one end of the positioning plate 3, a pressing mechanism 6 provided on both sides of the positioning plate 3, and a cover plate 7 that can be covered on the rotating shaft 8.

[0029] See Figure 7 As shown, the positioning plate 3 has a long strip-shaped structure, with a stop block 31 at one end. The stop block 31 protrudes upward from the upper end surface of the positioning plate 3. Multiple positioning blocks 32 are fixedly connected to the upper end surface of the positioning plate 3 along its length. The multiple positioning blocks 32 can be set on one side of the upper end surface of the positioning plate 3. In this embodiment, in order to facilitate the initial positioning of the rotating shaft 8, positioning blocks 32 are provided on both sides of the upper end surface of the positioning plate 3.

[0030] In order to make the side push mechanism 4 abut against the middle of the vertical end face 81 of the side of the rotating shaft 8 to stabilize and fix the rotating shaft 8, an avoidance groove 33 is provided on the side of the positioning plate 3 near the side push mechanism 4. The avoidance groove 33 extends from the vertical end face of the positioning plate 3 to its inner side.

[0031] See Figure 6 As shown, when the rotating shaft 8 is placed on the positioning plate 3 along the length of the positioning plate 3, the rotating shaft 8 is placed on the upper surface of the positioning plate 3 surrounded by the stop block 31 and the two side positioning blocks 32. The two side positioning blocks 32 perform preliminary positioning of the rotating shaft 8, so that one end of the rotating shaft 8 can abut against the stop block 31 and the inner end face of the positioning block 32 on the side away from the side push mechanism 4 as much as possible.

[0032] See Figure 4 , 5 As shown, the positioning plate 3 is horizontally fixed to the upper surface of the support plate 2 along the length of the support plate 2 by bolts. The side-push mechanism 4 has two components, including a side-push cylinder 41 fixedly connected to one side of the support plate 2 of the positioning plate 3 by bolts, and a side-push plate 42 fixedly connected to the telescopic component of the side-push cylinder 41 by bolts. When the telescopic component of the side-push cylinder 41 extends to drive the side-push plate 42, the side-push plate 42 can extend into the clearance groove 33 of the positioning plate 3 and abut against the vertical end face 81 of the rotating shaft 8, causing the rotating shaft 8 to abut against the inner end face of the positioning block 32 away from the side-push mechanism 4, thereby positioning the side of the rotating shaft 8.

[0033] The jacking mechanism 5 includes a jacking cylinder 51 bolted to a support plate 2 opposite to the stop block 31, and a jacking plate 52 bolted to the telescopic component of the jacking cylinder 51. When the telescopic component of the jacking cylinder 51 extends, it can drive the jacking plate 52 to abut against and push the rotating shaft 8, so that the end of the rotating shaft 8 away from the jacking mechanism 5 abuts against the inner end face of the stop block 31, thereby positioning the end face of the rotating shaft 8.

[0034] The pressing mechanism 6 includes a pressing cylinder 61 fixedly connected to the support plate 2 by bolts and a pressing plate 62 fixedly connected to the telescopic part of the pressing cylinder 61. In this embodiment, in order to make the overall structure compact and facilitate longitudinal pressing of the rotating shaft 8, the pressing cylinder 61 is fixedly connected to the lower end face of the support plate 2 by bolts.

[0035] See Figure 5 As shown, clearance slots 21 are provided on the outer sides of both sides of the positioning plate 3 and on the outer sides of both ends of the support plate 2. The pressing cylinder 61 is vertically fixed to the lower end face of the support plate 2 at the clearance slot 21 by bolts. The telescopic component of the pressing cylinder 61 can slide through the clearance slot 21. A pressing plate 62 is fixedly connected to the telescopic component of the pressing cylinder 61 in the clearance slot 21 by bolts. The pressing plate 62 can slide in the clearance slot 21. When the telescopic component of the pressing cylinder 61 retracts, it can drive the pressing plate 62 to move down and press against the upper end face of the rotating shaft 8.

[0036] See Figure 8 As shown, in order to avoid the lower pressure plate 62 blocking the rotating shaft 8 when feeding the rotating shaft 8, in this embodiment, the lower pressure cylinder 61 is an existing rotary lower pressure cylinder, and the lower pressure plate 62 is a T-shaped structure, which is vertically fixed to the telescopic part of the lower pressure cylinder 61 by bolts.

[0037] See Figure 4As shown, when there is no need to press the rotating shaft 8, that is, when loading and unloading the rotating shaft 8, the lower pressure cylinder 61 drives the lower pressure plate 62 to move upward to disengage from the rotating shaft 8 and rotate the lower pressure plate 62 to be parallel to the rotating shaft 8. At this time, the lower pressure plate 62 is located outside the rotating shaft 8 and will not obstruct it when loading and unloading the rotating shaft 8.

[0038] See Figure 10 As shown, when it is necessary to press the rotating shaft 8, the pressing cylinder 61 drives the pressing plate 62 to rotate perpendicular to the rotating shaft 8 and move down to press the rotating shaft 8.

[0039] Furthermore, to prevent the lower pressure plate 62 from damaging the rotating shaft 8, in this embodiment, a support block 22 is vertically fixed to the support plate 2 on the side away from the positioning plate 3 and the clearance slot 21 by bolts. When the rotating shaft 8 needs to be pressed, one side of the horizontal end of the lower pressure plate 62 presses against the upper surface of the rotating shaft 8, and the other side presses against the support block 22. By setting the support block 22, the downward pulling force of the lower pressure cylinder 61 on the lower pressure plate 62 is shared, thereby preventing damage to the rotating shaft 8.

[0040] See Figure 1 As shown, since the rotating shaft 8 has an arc surface 82, when the side-push cylinder 41 drives the side-push plate 42 to abut and push the vertical end face 81 of the rotating shaft 8, the rotating shaft 8 may deflect, resulting in the upper end face of the rotating shaft 8 being in a non-horizontal state. Therefore, in this embodiment, a cover plate 7 is provided, which is used to press the rotating shaft 8 to position it horizontally. When the telescopic parts of the side-push cylinder 41 and the top-push cylinder 51 are not extended, the cover plate 7 is used to cover the upper end face of the rotating shaft 8 to ensure that the upper end face of the rotating shaft 8 is horizontal. When the cover plate 7 is not removed, the side-push cylinder 41 drives the side-push plate 42 and the top-push cylinder 51 drives the top-push plate 52, thereby achieving precise positioning and horizontal fixation of the rotating shaft 8.

[0041] See Figure 9 As shown, a cover plate through groove 71 is provided on the cover plate 7 corresponding to the lower pressure plate 62. When the cover plate 7 is placed on the rotating shaft 8, the lower pressure plate 62, which is parallel to the rotating shaft 8, passes through the corresponding cover plate through groove 71. An observation through hole 72 is provided in the middle of the cover plate 7 to observe the rotating shaft 8 below. In addition, it also has a weight reduction function. To facilitate the removal and placement of the cover plate 7, removal and placement through grooves 73 are provided on both sides of the cover plate 7. The operator can put their hands into the removal and placement through grooves 73 and hold the cover plate 7.

[0042] The working principle and process of this embodiment are as follows: See Figure 4 As shown, when the rotating shaft 8 is not placed, the telescopic parts of the side push cylinder 41 and the top push cylinder 51 are in the retracted state, and the telescopic part of the downward press cylinder 61 is in the extended state. At this time, the downward press plate 62 is parallel to the positioning plate 3. See Figure 2As shown, the rotating shaft 8 is placed along its length inside the stop block 31 and positioning block 32 of the positioning plate 3. Then, the cover plate 7 is held and pressed against the upper end face of the rotating shaft 8. At this time, the lower end face of the cover plate 7 is pressed against the upper end face of the support block 22, thus ensuring that the lower end face of the cover plate 7 is in a horizontal state, thereby ensuring that the upper end face of the rotating shaft 8 is in a horizontal state. Then, the telescopic parts of the side push cylinder 41 and the top push cylinder 51 extend to drive the side push plate 42 and the top push plate 52 to move respectively, so that one vertical end face 81 of the rotating shaft 8 abuts against the inner end face of the positioning block 32, and one end of the rotating shaft 8 abuts against the inner side face of the stop block 31, thereby completing the horizontal positioning and fixing of the rotating shaft 8. Figure 1 As shown; See afterward. Figure 10 As shown, when the cover plate 7 is removed, the telescopic part of the pressing cylinder 61 retracts, thereby driving the pressing plate 62 to rotate and press down. At this time, the pressing plate 62 is perpendicular to the rotating shaft 8 and presses against the rotating shaft 8, thereby completing the fixation of the rotating shaft 8 in the vertical direction. Afterwards, the rotating shaft 8 can be machined. After machining, the telescopic component of the downward pressing cylinder 61 extends, and the telescopic components of the side pushing cylinder 41 and the top pushing cylinder 51 retract, as shown. Figure 2 As shown, the machined shaft 8 can then be removed.

[0043] It should be noted that this embodiment also requires a controller, solenoid valve, air source and other components that cooperate with the side thrust cylinder 41, top thrust cylinder 51 and bottom thrust cylinder 61. The connection method and control principle of these components with the side thrust cylinder 41, top thrust cylinder 51 and bottom thrust cylinder 61 are existing technologies and will not be described in detail here. As long as the above process can be met, it is acceptable.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining fixture for rotating shafts, comprising a base plate, a contour column disposed on the upper surface of the base plate, and a support plate disposed on the contour column, characterized in that: Also includes: Positioning plate; fixedly connected to the upper surface of the support plate, with a stop block at one end and positioning blocks along its length; Side push mechanism: includes a side push cylinder fixedly connected to a support plate on one side of the positioning plate and a side push plate provided on the telescopic part of the side push cylinder; Pushing mechanism: includes a pushing cylinder fixedly connected to a support plate opposite to the stop block and a pushing plate provided on the telescopic part of the pushing cylinder; The pressing mechanism includes a pressing cylinder fixedly connected to the support plate and a pressing plate provided on the telescopic part of the pressing cylinder; Cover plate: Used to press the shaft to position it horizontally; When the rotating shaft is placed on the positioning plate inside the positioning block and the stop block, the cover plate presses against the upper end face of the rotating shaft. The side push mechanism and the top push mechanism cause the rotating shaft to abut against the positioning block and the stop block respectively. After the cover plate is removed, the pressing mechanism presses against the rotating shaft.

2. The shaft machining fixture according to claim 1, characterized in that: Positioning blocks are provided on both sides of the upper surface of the positioning plate along its length, and the rotating shaft is placed between the positioning blocks on both sides.

3. The shaft machining fixture according to claim 2, characterized in that: An avoidance groove is provided on one side of the positioning plate, and the side push plate can slide down into the avoidance groove and abut against the rotating shaft under the drive of the side push cylinder.

4. The shaft machining fixture according to claim 1, characterized in that: An clearance groove is provided on the support plate outside the positioning plate. The pressing cylinder is vertically fixed to the lower end face of the support plate at the clearance groove. The pressing plate is slidably disposed in the clearance groove.

5. The shaft machining fixture according to claim 4, characterized in that: The pressing cylinder is a rotary pressing cylinder. When it is necessary to press the rotating shaft, the pressing cylinder drives the pressing plate to rotate to be perpendicular to the rotating shaft and move down to press the rotating shaft. When it is not necessary to press the rotating shaft, the pressing cylinder drives the pressing plate to move up to disengage from the rotating shaft and rotate to be parallel to the rotating shaft.

6. The shaft machining fixture according to claim 5, characterized in that: The lower pressure plate has a T-shaped structure, and a support block is provided on the side away from the positioning plate's clearance groove. When the rotating shaft needs to be pressed, one side of the horizontal end of the lower pressure plate presses against the upper surface of the rotating shaft, and the other side presses against the support block.

7. The shaft machining fixture according to claim 1, characterized in that: A cover plate through groove is provided on the cover plate corresponding to the lower pressure plate. When the cover plate is placed on the rotating shaft, the lower pressure plate passes through the corresponding cover plate through groove.

8. The shaft machining fixture according to claim 7, characterized in that: An observation hole is provided in the middle of the cover plate.

9. A shaft machining fixture according to claim 7, characterized in that: Access slots are provided on both sides of the cover plate.

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