Inner hole positioning turning tool
Through the design of the support component of the inner hole positioning workpiece, the problems of part deformation and inaccurate positioning are solved, efficient processing and simple maintenance are achieved, and part damage and production downtime are reduced.
Patent Information
- Application Number
- CN202422119062.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-29
AI Technical Summary
The prior art When turning and processing thin-walled parts with holes in discs, the parts are prone to deformity, resulting in inaccurate positioning or dimensional deviation, and the existing structure is complex and difficult to maintain.
The inner hole positioning workpiece is adopted. Through the mandrel and disk design of the support assembly, the coordination of the limit plate and the slope table is used to achieve simple support and fixation of the holes at the center of the part.
While ensuring processing accuracy, it reduces parts damage, and the tooling structure is simple, which is easy to replace and maintain and saves production time.
Smart Images
Figure CN223146039U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lathe machining, and particularly relates to an internal hole positioning lathe tooling. Background Art
[0002] When turning and machining thin-walled parts of a disc type with holes, the prior art is to directly clamp the outer circle of the part. This method is likely to cause the part to deform, resulting in inaccurate positioning, or the part to deform and rebound after machining, resulting in dimensional deviation. There is also a prior art that designs a relatively complex structure to support the hole at the center of the part. Not only is the installation method relatively complex, but the structure is likely to be damaged after long-term use, and the overall maintenance is difficult. Summary of the Utility Model
[0003] Aiming at the technical problems in the background art, the purpose of the utility model is to provide an internal hole positioning lathe tooling, which supports the hole at the center of the part with a simple structure.
[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:
[0005] An internal hole positioning lathe tooling includes a support assembly, a connecting piece and a workpiece. A number of support holes are provided on the workpiece, and an opening is provided at the center position of the workpiece. The workpiece is arranged between the support assembly and the connecting piece. The support assembly includes a disc body and a core shaft. The workpiece is closely attached to the disc body. The core shaft is arranged at the center of the disc body. A connecting hole is provided on the core shaft. A limiting cylinder is arranged at one end of the core shaft. The limiting cylinder is surrounded by a number of limiting pieces. There is a certain interval between adjacent limiting pieces. The limiting pieces have a certain elasticity. When the workpiece and the disc body are closely attached, the limiting cylinder extends into the opening. One end of the connecting piece is provided with a connecting rod, and a bevel platform is provided on the connecting rod. The connecting rod extends into the connecting hole, and the bevel platform extends into the limiting cylinder and abuts against the limiting pieces, so that the limiting pieces move along the inclined surface direction of the bevel platform.
[0006] Preferably, a number of support columns are provided on the disc body, and the support holes are connected to the support columns.
[0007] Preferably, a connecting groove is provided at the center position of the disc body, and the connecting piece is detachably connected in the connecting groove.
[0008] Preferably, the disc body is connected to the lathe.
[0009] Preferably, the diameter of the bevel platform continuously decreases along the direction of the connecting rod, and the maximum diameter of the bevel platform is greater than the diameter of the limiting cylinder.
[0010] Preferably, a connecting cap is provided at one end of the bevel platform, and a clamping groove is provided through the connecting cap.
[0011] The utility model has the following advantages and beneficial effects:
[0012] 1. In the present utility model, the mandrel and the disc body are detachably connected. The parts are directly inserted into the limiting posts and the limiting cylinders, the connecting piece is inserted into the mandrel, the inclined platform expands the limiting piece, so that the limiting piece and the opening are in close contact, and the parts are supported, which is convenient for subsequent processing. The whole tooling structure is simple. Under the condition of ensuring normal processing, the damage of the tooling to the parts is minimized.
[0013] 2. In the present utility model, the tooling adopts a detachable design. After long-term use, the limiting pieces on the mandrel will inevitably undergo varying degrees of deformation. Remove the mandrel and then insert a new mandrel into the disc body to complete the replacement work. The whole replacement process is simple and efficient, does not require long-term shutdown, and saves a lot of production time. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional connection diagram of an internal hole positioning lathe tooling provided by the present utility model;
[0015] Figure 2 It is a schematic structural diagram of the disc body of an internal hole positioning lathe tooling provided by the present utility model;
[0016] Figure 3 It is a schematic structural diagram of the workpiece of an internal hole positioning lathe tooling provided by the present utility model;
[0017] Figure 4 It is a schematic structural diagram of the mandrel of an internal hole positioning lathe tooling provided by the present utility model;
[0018] Figure 5 It is a schematic structural diagram of the connecting piece of an internal hole positioning lathe tooling provided by the present utility model;
[0019] Figure 6 It is a sectional view of an internal hole positioning lathe tooling provided by the present utility model;
[0020] Reference numerals: 1 - disc body, 101 - connection groove, 102 - support post, 2 - mandrel, 21 - limiting cylinder, 211 - limiting piece, 22 - connection hole, 23 - thread section II, 3 - workpiece, 31 - opening, 32 - support hole, 4 - inclined platform, 41 - connecting rod, 411 - thread section I, 42 - connection cap, 421 - card slot. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.
[0022] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the scope of protection of the present invention.
[0023] Embodiment
[0024] As Figure 1 、 2 As shown in 3 and 6, an internal hole positioning lathe tooling includes a support assembly, a connecting member, and a workpiece 3. A plurality of support holes 32 are provided on the workpiece 3, and the support holes 32 are evenly distributed on the circumference of the workpiece 3. An opening 31 is provided at the center position of the workpiece 3. The workpiece 3 is arranged between the support assembly and the connecting member. The support assembly includes a disk body 1 and a mandrel 2. The disk body 1 is connected to the main shaft of the lathe, and the rotation of the main shaft of the lathe drives the disk body 1 to rotate synchronously. A plurality of support columns 102 are provided on the disk body 1. The shape and position of the support columns 102 are the same as those of the support holes 32. The workpiece 3 is closely attached to the disk body 1, and the support holes 32 are connected to the support columns 102. The support columns 102 are used to strengthen the connection between the workpiece 3 and the support assembly and prevent relative sliding between the workpiece 3 and the disk body 1.
[0025] As Figures 1-6As shown in the figure, a connecting groove 101 is provided at the center position of the disk body 1. The mandrel 2 is detachably connected in the connecting groove 101. The mandrel 2 is directly inserted into the disk body 1, which is not only efficient and convenient during installation, but can be directly removed during disassembly. The inside of the disk body 1 is a stepped hole structure. The mandrel 2 extends into the connecting groove 101. The end of the mandrel 2 is supported by the disk body 1, and the mandrel can slide in the connecting groove 101. During turning processing, the turning tool continuously applies a force to the workpiece 3, so that the mandrel 2 is subjected to a force towards the disk body 1. At the same time, the end of the mandrel 2 receives the supporting force of the disk body 1, making the mandrel 2 in a fixed state. A connecting hole 22 is provided on the mandrel 2. A limiting cylinder 21 is provided at one end of the mandrel 2. The limiting cylinder 21 is formed by enclosing a number of circumferentially evenly distributed limiting pieces 211. There is a certain interval between adjacent limiting pieces 211, and the limiting pieces 211 have a certain elasticity. When the mandrel 2 is completely connected in the disk body 1, the limiting cylinder 21 extends out from one end of the disk body 1. When the workpiece 3 is in close contact with the disk body 1, the limiting cylinder 21 extends into the opening 31 to support the workpiece 3. The connecting piece includes a connecting rod 41 and an inclined platform 4 integrally connected to the connecting rod 41. The diameter of the inclined platform 4 continuously decreases along the direction of the connecting rod 41. The maximum diameter of the inclined platform 4 is larger than the diameter of the limiting cylinder 21. When the connecting rod 41 extends into the connecting hole 22, the inclined platform 4 extends into the limiting cylinder 21 and abuts against the limiting pieces 211, causing the limiting pieces 211 to move along the inclined surface direction of the inclined platform 4. At this time, the limiting pieces 211 open, the diameter of the limiting cylinder 21 becomes larger, and it is in close contact with the opening 31. The limiting pieces 211 tension the workpiece 3 outward, fixing the workpiece 3 on the limiting cylinder 21. A threaded section I 411 is provided on the connecting rod 41, and a threaded section II 23 is provided in the connecting hole 22. The connecting rod 41 and the connecting hole 22 are threadedly connected, which is convenient for adjusting the position of the inclined platform 4, and thus realizing the function of adjusting the opening angle of the limiting pieces 211.
[0026] As Figure 1 , 5 , 6 shown, a connecting cap 42 is provided at one end of the inclined platform 4. A card slot 421 is provided through the connecting cap 42. When installing the mandrel 2, align the connecting rod 41 and the connecting hole 22, and then insert one end of the wrench into the card slot 421 and rotate the wrench to connect the mandrel 2 and the disk body 1.
[0027] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An internal hole positioning lathe tooling, comprising a support assembly, a connecting piece and a workpiece (3). An opening (31) is provided at the center position of the workpiece (3). The workpiece (3) is arranged between the support assembly and the connecting piece. It is characterized in that, The support assembly includes a disc body (1) and a core shaft (2). The workpiece (3) is closely attached to the disc body (1). The core shaft (2) is arranged at the center of the disc body (1). A connection hole (22) is provided on the core shaft (2). A limiting cylinder (21) is provided at one end of the core shaft (2). The limiting cylinder (21) is formed by enclosing a plurality of circumferentially evenly distributed limiting pieces (211). There is a gap between adjacent limiting pieces (211). The limiting pieces (211) are elastic. When the workpiece (3) is closely attached to the disc body (1), the limiting cylinder (21) extends into the opening (31). The connecting piece includes a connecting rod (41) and an inclined platform (4) integrally connected to the connecting rod (41). The connecting rod (41) is connected in the connection hole (22). The inclined platform (4) extends into the limiting cylinder (21) and abuts against the limiting pieces (211) to make the limiting pieces (211) tension the workpiece outward.
2. The internal hole positioning lathe tooling according to claim 1, characterized in that: A plurality of support holes (32) are provided on the workpiece (3). A plurality of support columns (102) are provided on the disc body (1). The support holes (32) are connected to the support columns (102).
3. The internal hole positioning lathe tooling according to claim 1, characterized in that: A connection groove (101) is provided at the center position of the disc body (1). The core shaft (2) is detachably connected in the connection groove (101).
4. The internal hole positioning lathe tooling according to claim 1, wherein: The disc body (1) is connected to the lathe.
5. The internal hole positioning lathe tooling according to claim 1, characterized in that: The diameter of the inclined platform (4) continuously decreases along the direction of the connecting rod (41). The maximum diameter of the inclined platform (4) is greater than the diameter of the limiting cylinder (21).
6. The internal hole positioning lathe tooling according to claim 5, wherein: A connection cap (42) is provided at one end of the inclined platform (4). A card slot (421) is provided through the connection cap (42).
7. The internal hole positioning lathe tooling according to claim 1, characterized in that: A threaded section I (411) is provided on the connecting rod (41). A threaded section II (23) is provided in the connection hole (22). The connecting rod (41) and the connection hole (22) are threadedly connected.