Ball hole turning tool

Abstract

The utility model discloses a ball hole turning tool which is used for clamping and machining of a three-jaw chuck of a lathe and comprises a clamp body, a positioning plate, a connecting piece and a limiting piece, the clamp body comprises a cylindrical piece and an installation piece, and the installation piece is connected to one end of the cylindrical piece and provided with a clamped end clamped by the three-jaw chuck of the lathe; the positioning plate is provided with a mounting surface for mounting a processed workpiece; the connecting piece is arranged on the positioning plate and the mounting piece in a penetrating manner, and is used for adjusting a gap between the positioning plate and the mounting piece, so that the positioning plate has a first position state in which the positioning plate can rotate around the axis of the positioning plate and a second position state in which the positioning plate is locked on the mounting piece. The workpiece to be machined is mounted and positioned through the mounting part, the positioning plate and the limiting part, so that the axis of the cylindrical part coincides with the axis of the ball hole to be machined in the workpiece to be machined, the purpose of aligning the center of the ball hole at a time can be achieved when the cylindrical part is clamped by three jaws of a lathe, and the center of the part does not need to be frequently aligned.

Description

Technical Field

[0001] This utility model relates to the field of ball hole machining technology, specifically to a ball hole machining tooling. Background Technology

[0002] For machining ball holes in components, the components need to be clamped before machining with a special drill bit. For example, Chinese Patent 202322224682.1 discloses an internal ball hole machining device, including a fixture for clamping the workpiece and a first drive mechanism for driving the fixture to rotate. The axial side of the fixture is provided with a cutting tool for machining the internal ball hole of the workpiece. In the machining of ball holes on the airdrop plugs of aircraft electrical equipment, special spherical drill bits are currently used. For machining a φ7.5 spherical surface, a four-jaw clamp is used, combined with manual reverse pulling with the special spherical drill bit to form the hole.

[0003] For the aforementioned existing technology, the four-jaw clamping of the ball hole requires aligning the tooling and centering the ball hole every time the part is clamped, which is a relatively complicated process. In addition, multiple clamping operations can easily lead to unstable quality. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a ball hole machining fixture to solve the technical problem that in the existing technology, when machining ball holes with a four-jaw clamp, it is necessary to align the fixture and align the center of the ball hole each time the part is clamped, which is a relatively complicated process. At the same time, multiple clamping can easily cause unstable quality.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a ball hole turning fixture for lathe three-jaw chuck clamping and machining, including:

[0007] The clamping body includes a cylindrical part and a mounting part, the mounting part being connected to one end of the cylindrical part and having a clamped end that is held by the lathe's three-jaw chuck;

[0008] The positioning plate has a mounting surface for mounting the workpiece.

[0009] A connector, passing through the positioning plate and the mounting member, adjusts the gap between the positioning plate and the mounting member to give the positioning plate a first position state in which it can rotate about the positioning plate axis, and a second position state in which it is locked on the mounting member; and

[0010] A limiting component is inserted between the positioning plate and the mounting component, so that the axis of the cylindrical component coincides with the axis of the ball hole to be processed on the workpiece.

[0011] In some embodiments, the mounting member includes a vertical plate and a horizontal plate, the vertical plate being vertically connected to the top of the horizontal plate and connected to one end of the cylindrical member, and the positioning plate being detachably rotatably connected to the top of the horizontal plate via a connector.

[0012] In some embodiments, the outer side of the positioning plate is provided with external threads for threaded connection with the internal threads of the workpiece.

[0013] In some embodiments, the connector includes a rotating shaft, a top plate, and a limiting nut. The positioning plate has a through hole at its axis, and the horizontal plate has a shaft hole aligned with the through hole. The rotating shaft is inserted between the through hole and the shaft hole. The top plate is disposed on the top of the rotating shaft and abuts against the top of the positioning plate. The limiting nut is threaded to the outside of the rotating shaft and abuts against the bottom of the horizontal plate.

[0014] In some embodiments, a first positioning hole is provided at the bottom of the horizontal plate, and a second positioning hole corresponding to the position of the first positioning hole is provided at the bottom of the positioning plate, and the limiting member is inserted between the first positioning hole and the second positioning hole.

[0015] In some embodiments, the number of the second positioning holes is two, and they are arranged symmetrically on both sides of the through hole.

[0016] In some embodiments, a groove is provided at the end of the cylindrical member, and a rod is provided on the side of the vertical plate near the cylindrical member. The rod is inserted into the groove, and the vertical plate is connected to the end of the cylindrical member by connecting bolts.

[0017] In some embodiments, the groove is square in shape.

[0018] In some embodiments, the limiting member includes a positioning bolt, which is threadedly connected to the first positioning hole and inserted into the corresponding second positioning hole.

[0019] In some embodiments, the limiting member includes a pull rod and a spring, one end of the spring being connected to the first positioning hole and the other end being connected to the pull rod, and both ends of the pull rod extending to the bottom of the first positioning hole and the inner side of the second positioning hole, respectively.

[0020] Compared with the prior art, the ball hole machining fixture provided by this utility model installs and positions the workpiece through mounting parts, positioning plates and limiting parts, so that the axis of the cylindrical part coincides with the axis of the ball hole to be machined on the workpiece. When the cylindrical part is held by the three jaws of the lathe, the center of the ball hole can be aligned in one step, without the need for frequent alignment of the part center, reducing the workload, improving production efficiency and ensuring production quality. Attached Figure Description

[0021] Figure 1 This is a three-dimensional drawing of the ball hole machining fixture provided in this embodiment of the utility model;

[0022] Figure 2 This is a three-dimensional exploded view of the ball hole machining fixture provided in this embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the installation and machining of the ball hole machining fixture provided in this embodiment of the utility model;

[0024] Figure 4 This is a partial orthosectional view of the ball hole machining fixture provided in this embodiment of the present invention, which uses positioning bolts.

[0025] Figure 5 This is a partial orthosectional view of the ball hole machining fixture provided in this embodiment of the present invention, which uses a tie rod and a spring.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Clamp body; 11. Cylindrical part; 1101. Groove; 12. Mounting part; 121. Vertical plate; 122. Horizontal plate; 1201. Shaft hole; 1202. First positioning hole; 1203. Insert rod; 1204. Connecting bolt;

[0028] 2. Positioning plate; 201. External thread; 202. Through hole; 203. Second positioning hole;

[0029] 3. Limiting component; 31. Positioning bolt; 32. Tie rod; 33. Spring;

[0030] 4. Connecting parts; 41. Rotating shaft; 42. Top plate; 43. Limiting nut;

[0031] 5. Workpiece to be processed; 501. Hole to be processed. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the technical problem of complex tooling alignment for machining ball holes using a four-jaw chuck, which requires aligning the tooling and center of the ball hole every time a part is clamped, and the instability in quality caused by multiple clamping operations, this invention provides a ball hole machining tooling that enables the spindle center to be aligned with the center of the machined hole with only one clamping and tooling alignment during the machining process.

[0034] It should be noted that the ball hole machining fixture described in this utility model is used for, but not limited to, ball hole machining of aircraft electrical equipment airdrop plugs. For ease of explanation, this utility model only uses the application of the ball hole machining fixture to the ball hole machining of aircraft electrical equipment airdrop plugs as an example. The principle of the ball hole machining fixture applied to other types of equipment is essentially the same as that applied to the ball hole machining of aircraft electrical equipment airdrop plugs, and will not be elaborated here.

[0035] Please see Figure 1 and Figure 2 This utility model provides a ball-hole turning fixture for lathe three-jaw chuck clamping and machining. The fixture includes a fixture body 1, a positioning plate 2, and a limiting member 3. The fixture body 1 includes a cylindrical member 11 and a mounting member 12. The mounting member 12 is connected to one end of the cylindrical member 11. The cylindrical member 11 is used for three-jaw chuck clamping of the lathe. The cylindrical member 11 is a cylindrical rod that can be directly clamped by the three-jaw chuck, and after clamping, the center of the lathe spindle can be aligned with its axis. The positioning plate 2 is detachably connected to the mounting member 12 via a connecting member 4, and has a first position state that can rotate around the axis of the positioning plate 2, and a second position state that is locked on the mounting member 12, for mounting the workpiece 5. Part 5 is installed on the positioning plate 2. In the first position, it can also be rotated to adjust its direction. This action is used when there are ball holes on both sides that need to be processed. It can be rotated directly to change the position without disassembling the workpiece, thus improving the convenience of ball hole processing. The limiting part 3 is inserted between the positioning plate 2 and the mounting part 12, so that the axis of the cylindrical part 11 coincides with the axis of the ball hole to be processed on the workpiece. After rotation and repositioning, the limiting part 3 is used to position the part to ensure that the axis of the cylindrical part 11 still coincides with the axis of the ball hole to be processed on the workpiece after rotation and repositioning.

[0036] In this embodiment, the workpiece 5, namely the aircraft electrical equipment airdrop plug, has two symmetrical spherical holes that need to be machined on its outer circumference. The inner walls of these holes need to be machined into spherical surfaces. Based on this, please refer to [further details omitted]. Figure 1-5 The workpiece 5 is installed on the positioning plate 2, with the hole 501 to be processed on one side facing away from the cylindrical part 11. This side is the processing side. The positioning plate 2 is locked in the second position state for processing. After processing, the positioning plate 2 is adjusted to the first position state, and the positioning plate 2 and the workpiece 5 are rotated together until the hole 501 to be processed on the other side faces away from the cylindrical part 11 for ball hole processing.

[0037] Understandably, the cylindrical part 11 provides a base point for the ball hole machining fixture and the three-jaw chuck lathe to be clamped, and can be used to position the axis. Then, the mounting part 12 and the positioning plate 2 form an installation structure for the workpiece, so that the workpiece can be installed on the ball hole machining fixture, and the axis of the cylindrical part 11 is aligned with the axis of the ball hole to be machined on the workpiece. After clamping, positioning can be achieved. Then, the connecting part 4 and the limiting part 3 can be used to rotate and position at least two holes 501 located on the outer periphery of the workpiece 5, improving the convenience of machining operations.

[0038] In one embodiment, please refer to Figure 3 and Figure 4 To distinguish between the connecting part and the workpiece area, the mounting component 12 includes a vertical plate 121 and a horizontal plate 122. The vertical plate 121 is vertically connected to the top of the horizontal plate 122 and connected to one end of the cylindrical component 11. The positioning plate 2 is detachably and rotatably connected to the top of the horizontal plate 122 via a connector 4. The horizontal plate 122 serves as a platform for mounting the workpiece, while the positioning plate 2 serves as both the positioning part and the connecting part of the workpiece.

[0039] Furthermore, to facilitate the installation of the workpiece, the outer side of the positioning plate 2 is provided with an external thread 201 for threaded connection with the internal thread of the workpiece. When the inner side of the workpiece has an internal thread for connection with other components in actual use, the external thread 201 on the outer side of the positioning plate 2 simulates the connection structure of other components with it in actual use, thereby allowing the workpiece to be installed and positioned.

[0040] Understandably, the installation structure of the workpiece is not limited to threaded connection; a clamping structure can also be used for clamping and fixing. If the workpiece is connected to other components in actual use by a flange or other structure, the structure of the positioning plate 2 can be adjusted accordingly to achieve the purpose of installing and positioning the workpiece.

[0041] In one embodiment, please refer to Figure 1 and Figure 2To enable the positioning plate 2 to rotate and lock, the connecting member 4 includes a rotating shaft 41, a top plate 42, and a limiting nut 43. The positioning plate 2 has a through hole 202 at its axis, and the horizontal plate 122 has a shaft hole 1201 aligned with the through hole 202. The rotating shaft 41 is inserted between the through hole 202 and the shaft hole 1201, forming a support shaft for the positioning plate 2, allowing the positioning plate 2 to rotate around the rotating shaft 41. The top plate 42 is positioned on top of the rotating shaft 41 and abuts against the top of the positioning plate 2, forming a top limit. The limiting nut 43 is threaded onto the outside of the rotating shaft 41 and abuts against the bottom of the horizontal plate 122, forming a bottom limit. When the limiting nut 43 is rotated, the tightness between the nut and the bottom of the horizontal plate 122 is released, and the top plate 42 can release the restriction on the positioning plate 2, which is the first position state, and the positioning plate 2 can be rotated; when the limiting nut 43 is rotated, it is pressed against the bottom of the horizontal plate 122, pulling the top plate 42 and pressing the clamp on the top of the positioning plate 2, restricting its rotation and forming a lock, which is the second position state.

[0042] Understandably, by loosening and tightening the limit nut 43, the positioning plate 2 can be switched between the first position state and the second position state.

[0043] In one embodiment, please refer to Figure 3 , Figure 4 and Figure 5 To position the positioning plate 2 and the workpiece thereon, and to align the axis of the cylindrical member 11 with the axis of the ball hole to be processed on the workpiece, a first positioning hole 1202 is provided at the bottom of the horizontal plate 122, and a second positioning hole 203 corresponding to the position of the first positioning hole 1202 is provided at the bottom of the positioning plate 2. A limiting member 3 is inserted between the first positioning hole 1202 and the second positioning hole 203. The first positioning hole 1202 is located on the vertical plane of the axis of the cylindrical member 11, and the second positioning hole 203 is located on the vertical plane of the axis of the ball hole to be processed on the workpiece. When the limiting member 3 is inserted between the inner sides of the first positioning hole 1202 and the second positioning hole 203, the axis of the cylindrical member 11 coincides with the axis of the ball hole to be processed on the workpiece.

[0044] Understandably, during the manufacturing process, the height of the fixture 1 is matched with that of the workpiece. That is, when the workpiece is installed on the positioning plate 2 and locked, the height of the ball hole to be processed is at the same height as the axis of the cylindrical part 11.

[0045] Furthermore, there are two second positioning holes 203, which are symmetrically arranged on both sides of the through hole 202. The two through holes 202 correspond to two ball holes to be processed, and they are respectively distributed on the vertical plane of the axis of the ball hole to be processed.

[0046] Understandably, if there are multiple ball holes to be processed on the outer periphery of the workpiece, then multiple second positioning holes 203 can be set up for positioning at the corresponding ball hole positions.

[0047] In one embodiment, please refer to Figure 1 and Figure 2 In order to replace the workpiece when the height of the ball hole changes, the cylindrical part 11 has a groove 1101 at its end. The vertical plate 121 has a plug 1203 on the side near the cylindrical part 11. The plug 1203 is inserted into the groove 1101. The vertical plate 121 is connected to the end of the cylindrical part 11 by a connecting bolt 1204. By removing the connecting bolt 1204, the cylindrical part 11 and the vertical plate 121 can be separated, and the mounting part 12 can be replaced with another mounting part 12 with a different height to be used for the workpiece with the changed ball hole height.

[0048] To prevent twisting during installation, the groove 1101 is square in shape, which allows for quick positioning of bolt holes.

[0049] Understandably, the detachable structure of the cylindrical part 11 and the mounting part 12 allows the mounting part 12 to be replaced without loosening the clamping of the cylindrical part 11, thereby increasing the speed of tooling replacement; and, if the cylindrical part 11 or the mounting part 12 is damaged, they can be replaced separately.

[0050] In one feasible embodiment, please refer to Figure 4 In order to limit the positioning plate 2, the limiting member 3 includes a positioning bolt 31. The positioning bolt 31 is threadedly connected to the first positioning hole 1202 and inserted into the corresponding second positioning hole 203. Positioning can be formed by rotating the positioning bolt 31 and inserting it into the corresponding second positioning hole 203.

[0051] In another feasible embodiment, please refer to Figure 5 To quickly limit the positioning plate 2, the limiting component 3 includes a pull rod 32 and a spring 33. One end of the spring 33 is connected to the first positioning hole 1202, and the other end is connected to the pull rod 32. Both ends of the pull rod 32 extend to the bottom of the first positioning hole 1202 and the inner side of the second positioning hole 203, respectively. By pulling the pull rod 32, the pull rod 32 is disengaged from the second positioning hole 203, thus releasing the rotation restriction on the positioning plate 2. At this time, the spring 33 is in a compressed state. When the positioning plate 2 is rotated again, and the first positioning hole 1202 is aligned with the second positioning hole 203 on the other side, the pull rod 32 can be automatically pushed into the second positioning hole 203 under the rebound action of the spring 33, forming a positioning limit.

[0052] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail as follows: The workpiece 5 is threaded onto the positioning plate 2 to form an installation positioning; then, the positioning plate 2 is rotated to align one of the second positioning holes 203 with the first positioning hole 1202, and then the limiting member 3 passes through the second positioning hole 203 and the first positioning hole 1202 to form a positioning; finally, the limiting nut 43 is tightened to abut against the bottom of the horizontal plate 122, the top plate 42 is pulled tight and pressed against the top of the positioning plate 2 to restrict its rotation and form a lock, so that subsequent processing can be carried out; after the first ball hole is processed, the limiting nut 43 is loosened, the positioning plate 2 is rotated to align the other second positioning hole 203 with the first positioning hole 1202, and the limiting member 3 passes through the second positioning hole 203 and the first positioning hole 1202 to form a positioning, and then the limiting nut 43 is tightened to process the second ball hole.

[0053] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A ball-hole turning fixture for machining on a lathe using a three-jaw chuck, characterized in that, include: The clamping body includes a cylindrical part and a mounting part, the mounting part being connected to one end of the cylindrical part and having a clamped end that is held by the lathe's three-jaw chuck; The positioning plate has a mounting surface for mounting the workpiece. A connector is inserted through the positioning plate and the mounting component to adjust the gap between the positioning plate and the mounting component, so that the positioning plate has a first position state in which it can rotate about the axis of the positioning plate, and a second position state in which it is locked on the mounting component. as well as A limiting component is inserted between the positioning plate and the mounting component, so that the axis of the cylindrical component coincides with the axis of the ball hole to be processed on the workpiece.

2. The tooling for machining ball holes according to claim 1, characterized in that, The mounting component includes a vertical plate and a horizontal plate. The vertical plate is vertically connected to the top of the horizontal plate and connected to one end of the cylindrical component. The positioning plate is detachably and rotatably connected to the top of the horizontal plate via a connector.

3. The tooling for machining ball holes according to claim 1, characterized in that, The positioning plate has external threads on its outer side for threaded connection with the internal threads of the workpiece.

4. The tooling for machining ball holes according to claim 2, characterized in that, The connector includes a rotating shaft, a top plate, and a limiting nut. The positioning plate has a through hole at its center, and the horizontal plate has a shaft hole aligned with the through hole. The rotating shaft is inserted between the through hole and the shaft hole. The top plate is located on the top of the rotating shaft and abuts against the top of the positioning plate. The limiting nut is threaded to the outside of the rotating shaft and abuts against the bottom of the horizontal plate.

5. The ball hole machining fixture according to claim 4, characterized in that, The bottom of the horizontal plate is provided with a first positioning hole, and the bottom of the positioning plate is provided with a second positioning hole corresponding to the position of the first positioning hole. The limiting member is inserted between the first positioning hole and the second positioning hole.

6. The tooling for machining ball holes according to claim 5, characterized in that, The second positioning hole has two holes, which are symmetrically arranged on both sides of the through hole.

7. The tooling for machining ball holes according to claim 2, characterized in that, The cylindrical component has a groove at its end, and the vertical plate has a rod on the side near the cylindrical component. The rod is inserted into the groove, and the vertical plate is connected to the end of the cylindrical component by connecting bolts.

8. The tooling for machining ball holes according to claim 7, characterized in that, The groove is square in shape.

9. The tooling for machining ball holes according to claim 5, characterized in that, The limiting component includes a positioning bolt, which is threadedly connected to the first positioning hole and inserted into the corresponding second positioning hole.

10. The tooling for machining a ball hole according to claim 5, characterized in that, The limiting component includes a pull rod and a spring. One end of the spring is connected to the first positioning hole, and the other end is connected to the pull rod. The two ends of the pull rod extend to the bottom of the first positioning hole and the inner side of the second positioning hole, respectively.

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