Centering and clamping mechanism for mandrel
By designing components such as double-end cone sleeves, steel balls, thin-walled expansion sleeves and rotating sleeves on the mandrel, automatic centering and clamping of parts of different sizes is achieved, solving the problem that the existing technology cannot adapt to parts of different sizes is improved, and the convenience and practicality of operation are improved.
Patent Information
- Application Number
- CN202421421402.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing mandrel centering chuck cannot clamp parts of different sizes, which is troublesome to operate and has low practicality.
A centering clamping mechanism for mandrel is designed. By setting components such as double-end conical sleeves, steel balls, thin-walled sleeves and rotary sleeves on the mandrel, and using threaded connections and extrusion rings to achieve automatic floating centering and clamping of workpieces of different sizes.
Automatic centering and clamping of parts of different sizes is achieved, which simplifies the operation process and improves the practicality and applicability of the equipment.
Smart Images
Figure CN222660787U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spindles, in particular to a centering clamping mechanism for a spindle. Background Art
[0002] The spindle is a shaft used to support rotating parts and only bear bending moments but not transmit torque. It is divided into rotating spindles and fixed spindles. The chuck is a machine tool accessory that uses the radial movement of the movable jaws evenly distributed on the chuck body to clamp and position the workpiece. The chuck generally consists of three parts: the chuck body, the movable jaws, and the jaw drive mechanism. The conventional coil-wire four-jaw centering chuck is used to manually clamp and release the workpiece, and the four jaws are linked together, which can only be used to center and clamp round or square tubes.
[0003] At present, each part on the market has a different diameter, and the diameters of the parts clamped and installed by the mandrel are also different. It is impossible to clamp parts of different sizes, and the operation is troublesome and the practicality is low.
[0004] In view of the above problems, a centering clamping mechanism for a spindle is proposed. Utility Model Content
[0005] The purpose of the utility model is to provide a centering clamping mechanism for a spindle, which solves the problem in the background technology that each part on the market has a different diameter, the diameters of the parts clamped and installed by the spindle are also different, parts of different sizes cannot be clamped, the operation is cumbersome, and the practicality is low.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centering and clamping mechanism for a spindle, comprising a spindle, a double-ended tapered sleeve is arranged on the left outer ring of the spindle, and the outer walls on both sides of the double-ended tapered sleeve are provided with evenly distributed steel balls, the outer ring of the double-ended tapered sleeve is provided with a thin-walled expansion sleeve, and the outer wall of the thin-walled expansion sleeve is provided with a workpiece, a first threaded hole is opened inside the bottom of the thin-walled expansion sleeve, a second threaded hole is opened inside the bottom of the left side of the spindle, and an installation component is arranged on the right side of the spindle.
[0007] By adopting the above technical solution, the first threaded hole and the second threaded hole fix the thin-wall expansion sleeve on the left outer wall of the spindle to support the workpiece.
[0008] As a further description of the above technical solution: the installation assembly includes a rotating sleeve, and the rotating sleeve is arranged on the right side of the spindle.
[0009] By adopting the above technical solution, the rotating sleeve is rotated on the inner wall of the spindle.
[0010] As a further description of the above technical solution: the first threaded hole and the inner wall of the second threaded hole are threadedly connected with bolts, and the right outer wall of the spindle is provided with a thread groove.
[0011] By adopting the above technical solution, the thin-wall expansion sleeve is fixed and locked by bolts.
[0012] As a further description of the above technical solution: a thread ring is fixedly connected to the inner wall of the rotating sleeve, and the thread ring is threadedly connected to the thread groove.
[0013] By adopting the above technical solution, the rotating sleeve is rotated and moved to the left side through the thread ring and the thread groove.
[0014] As a further description of the above technical solution: evenly distributed slots are provided inside the outer ring of the rotating sleeve.
[0015] By adopting the above technical solution, the rotating sleeve can be easily installed through the slotted hole.
[0016] As a further description of the above technical solution: an extrusion ring is arranged on the left side of the rotating sleeve, and the extrusion ring is slidably connected to the outer ring of the spindle.
[0017] By adopting the above technical solution, the extrusion ring is driven to extrude by moving the rotating sleeve.
[0018] As a further description of the above technical solution: a spherical washer is arranged on the left side of the extrusion ring, and the spherical washer is slidably connected to the outer ring of the spindle, and a mounting groove is opened inside the right side of the spherical washer.
[0019] By adopting the above technical solution, the spherical gasket is squeezed by the squeezing ring.
[0020] As a further description of the above technical solution: a moving ring is arranged on the left side of the spherical washer, and the moving ring is slidably connected to the outer wall of the spindle.
[0021] By adopting the above technical solution, the moving ring is squeezed by the spherical gasket, and the moving ring and the double-end cone sleeve are squeezed.
[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0023] The utility model provides a centering and clamping mechanism for a spindle. Firstly, a double-end tapered sleeve is squeezed by a rotating sleeve, an extrusion ring, a spherical washer and a moving ring. The double-end tapered sleeve is limited by steel balls on both sides. An outward tensioning force is generated on the double-end tapered sleeve, and an elastic force is generated on the inner hole of the thin-walled expansion sleeve. The outer circle of the thin-walled expansion sleeve is automatically floated, centered and clamped on the inner hole of the workpiece, so that workpieces of different diameters can be clamped. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0025] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;
[0026] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model.
[0027] In the figure: 1. spindle; 2. workpiece; 3. rotating sleeve; 4. extrusion ring; 5. spherical washer; 6. thin-walled expansion sleeve; 7. first threaded hole; 8. second threaded hole; 9. bolt; 10. double-ended tapered sleeve; 11. steel ball; 12. threaded groove; 13. moving ring; 14. threaded ring; 15. slotted hole; 16. mounting groove. DETAILED DESCRIPTION
[0028] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.
[0030] Reference Figure 1 The utility model discloses a centering clamping mechanism for a spindle, comprising a spindle 1. A double-ended tapered sleeve 10 is arranged on the left outer ring of the spindle 1. There are slopes on both sides of the double-ended tapered sleeve 10 so that a steel ball 11 can roll on the inner wall. The double-ended tapered sleeve 10 and the thin-walled expansion sleeve 6 have certain toughness.
[0031] Reference Figure 2 and Figure 3, the outer walls of the left and right sides of the double-ended cone sleeve 10 are provided with evenly distributed steel balls 11, the outer ring of the double-ended cone sleeve 10 is provided with a thin-walled expansion sleeve 6, and the outer wall of the thin-walled expansion sleeve 6 is provided with a workpiece 2, pushing the two groups of circumferentially arranged steel balls 11 to produce an outward tensioning force on the double-ended cone sleeve 10 that cooperates with the outer circle of the spindle 1 and can slide, and the double-ended cone sleeve 10 is squeezed, and a first threaded hole 7 is opened inside the bottom of the thin-walled expansion sleeve 6, and a second threaded hole 8 is opened inside the bottom of the left side of the spindle 1. The thin-walled expansion sleeve 6 is fixed by the first threaded hole 7, the second threaded hole 8 and the bolt 9, and an installation component is provided on the right side of the spindle 1, and the installation component includes a rotating sleeve 3, which is arranged on the right side of the spindle 1, and the inner walls of the first threaded hole 7 and the second threaded hole 8 are threadedly connected with bolts 9, and a thread groove 12 is opened on the outer wall of the right side of the spindle 1, and a thread ring 14 is fixedly connected to the inner wall of the rotating sleeve 3, and the thread ring 14 is threadedly connected to the thread groove 12, and the outer ring of the rotating sleeve 3 is opened inside. The uniform slot 15 is provided on the left side of the rotating sleeve 3, and the extrusion ring 4 is slidably connected with the outer ring of the spindle 1, and the spherical washer 5 is provided on the left side of the extrusion ring 4, and the spherical washer 5 is slidably connected with the outer ring of the spindle 1, and the right side of the spherical washer 5 is provided with a mounting groove 16, and the left side of the spherical washer 5 is provided with a moving ring 13, and the moving ring 13 is slidably connected with the outer wall of the spindle 1. First, the double-end cone sleeve 10 is sleeved on the middle section of the spindle 1, and the steel balls 11 are placed on both sides, and then the thin-wall expansion sleeve 6 is installed. Installed on the outer wall of the double-ended tapered sleeve 10, limited by the bolt 9, the moving ring 13 is moved from the right to the left, and sleeved on the outer wall of the spindle 1, the spherical washer 5 and the extrusion ring 4 are also sleeved on the outer wall of the spindle 1, the extrusion ring 4 is inserted into the mounting groove 16, and then the threaded ring 14 on the inner wall of the rotating sleeve 3 is threaded with the threaded groove 12 on the right outer wall of the spindle 1, so that the rotating sleeve 3 squeezes the object on the left, and then the workpiece 2 is sleeved on the outer wall of the thin-walled expansion sleeve 6, and finally the workpiece 2 is squeezed and fixed.
[0032] Working principle: Put the double-ended tapered sleeve 10 on the middle section of the spindle 1, place the steel balls 11 on both sides, and then install the thin-walled expansion sleeve 6 on the outer wall of the double-ended tapered sleeve 10. Limit it with the bolts 9, move the moving ring 13 from the right to the left, and put it on the outer wall of the spindle 1. Put the spherical washer 5 and the extrusion ring 4 on the outer wall of the spindle 1, insert the extrusion ring 4 into the installation groove 16, and then thread the threaded ring 14 on the inner wall of the rotating sleeve 3 with the threaded groove 12 on the right outer wall of the spindle 1, so that the rotating sleeve 3 squeezes the object on the left, and then put the workpiece 2 on the outer wall of the thin-walled expansion sleeve 6, and finally squeeze and fix the workpiece 2.
[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A centering clamping mechanism for a spindle, comprising a spindle (1), characterized in that: The left outer ring of the spindle (1) is provided with a double-end cone sleeve (10), and the left and right outer walls of the double-end cone sleeve (10) are provided with uniformly distributed steel balls (11). The outer ring of the double-end cone sleeve (10) is provided with a thin-wall expansion sleeve (6), and the outer wall of the thin-wall expansion sleeve (6) is provided with a workpiece (2). A first threaded hole (7) is provided inside the bottom of the thin-wall expansion sleeve (6), and a second threaded hole (8) is provided inside the left bottom of the spindle (1). A mounting assembly is provided on the right side of the spindle (1).
2. A centering and clamping mechanism for a spindle according to claim 1, characterized in that: The mounting assembly comprises a rotating sleeve (3), and the rotating sleeve (3) is arranged on the right side of the spindle (1).
3. A centering and clamping mechanism for a spindle according to claim 1, characterized in that: The inner walls of the first threaded hole (7) and the second threaded hole (8) are threadedly connected with bolts (9), and the right outer wall of the spindle (1) is provided with a thread groove (12).
4. A centering and clamping mechanism for a spindle according to claim 2, characterized in that: A threaded ring (14) is fixedly connected to the inner wall of the rotating sleeve (3), and the threaded ring (14) is threadedly connected to the thread groove (12).
5. A centering and clamping mechanism for a spindle according to claim 2, characterized in that: The outer ring of the rotating sleeve (3) is provided with evenly distributed slots (15).
6. A centering and clamping mechanism for a spindle according to claim 2, characterized in that: An extrusion ring (4) is arranged on the left side of the rotating sleeve (3), and the extrusion ring (4) is slidably connected to the outer ring of the spindle (1).
7. A centering and clamping mechanism for a spindle according to claim 6, characterized in that: A spherical washer (5) is arranged on the left side of the extrusion ring (4), and the spherical washer (5) is slidably connected to the outer ring of the spindle (1), and a mounting groove (16) is opened inside the right side of the spherical washer (5).
8. A centering and clamping mechanism for a spindle according to claim 7, characterized in that: A moving ring (13) is arranged on the left side of the spherical washer (5), and the moving ring (13) is slidably connected to the outer wall of the spindle (1).