Supporting device for part grinding machining

Abstract

The utility model relates to the technical field of grinding, in particular to a part grinding supporting device, which is characterized in that a mandrel is detachably connected with a plurality of washers, the washers have certain elasticity, an annular spacer sleeve is arranged between every two adjacent washers, an annular pressing ring is arranged at the tail end of the mandrel, and the washers and the spacer sleeves are pressed on the mandrel. The locking assembly comprises a locking plate and a locking cover, the locking plate and the locking cover are connected to the threaded rod in a sliding mode, the locking plate is tightly attached to the tail end of the mandrel, the locking cover is connected to the outer side of the locking plate, one end of the locking cover abuts against the part, the locking plate extrudes the pressing ring, and the pressing ring presses the part. And when the locking assembly is far away from the mandrel, the gasket is restored, the part is directly taken down, and the quality of the inner hole of the part is guaranteed to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding processing, in particular to a support device for grinding processing of parts. Background Art

[0002] Machining often involves the machining of thin-walled sleeve parts with high coaxiality requirements for inner and outer circles. For parts that cannot finish the precision machining of inner and outer circles in one clamping, usually after the inner hole is machined into shape, the part is mounted on a support device with the inner hole as the reference for precision machining of the outer circle.

[0003] In the prior art, a cylindrical mandrel is used as the support device, and the part is directly sleeved on the mandrel. The two are in clearance fit. The clearance between the inner hole of the part and the outer circle of the mandrel directly affects the coaxiality machining error. Moreover, since the inner hole size of each part cannot be machined to be exactly the same, when the inner hole is machined to the upper limit size, the clearance will be further enlarged. At the same time, the mandrel and the part are in a tight fit. After multiple uses, obvious wear will inevitably occur, and it is easy to scratch the part. Content of the Utility Model

[0004] Aiming at the technical problems existing in the background art, the purpose of the utility model is to provide a support device for grinding processing of parts, which can strengthen the strength of the support structure and protect the inner hole of the part while ensuring the coaxiality of the part and the mandrel.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A support device for grinding processing of parts, including a mandrel and washers and a locking assembly arranged on the mandrel. A plurality of washers are detachably connected to the mandrel. The washers have a certain elasticity. An annular spacer sleeve is arranged between adjacent washers. An annular pressing ring is arranged at the end of the mandrel to press the washers and the spacer sleeve on the mandrel. The part is connected to the outside of the washers, the spacer sleeve and the pressing ring. A threaded rod is arranged at the end of the mandrel. The locking assembly includes a locking plate and a locking cover. The locking plate and the locking cover are slidably connected to the threaded rod. The locking plate is in close contact with the end of the mandrel. The locking cover is connected to the outside of the locking plate and one end abuts against the part.

[0007] Preferably, an opening Ⅰ is arranged in the middle of the locking plate. The threaded rod passes through the opening Ⅰ. A connecting groove Ⅰ is arranged on the locking plate, and the connecting groove Ⅰ is arranged outside the opening Ⅰ.

[0008] Preferably, a nut Ⅰ is rotatably arranged on the locking plate. A convex ring Ⅰ is arranged at one end of the nut Ⅰ, and the convex ring Ⅰ is connected in the connecting groove Ⅰ.

[0009] Preferably, a limiting groove I is arranged inside the lock plate. The limiting groove I and the connecting groove I are vertically arranged. A limiting plate I is arranged on the convex ring I, and the limiting plate I is arranged in the limiting groove I.

[0010] Preferably, the inside of the lock cover is hollow. When one end of the lock cover abuts against a part, the lock plate is connected to the threaded rod. Inside the lock cover, an opening II is arranged in the middle of the lock cover. The threaded rod passes through the opening II. A connecting groove II is arranged on the lock cover, and the connecting groove II is arranged outside the opening II.

[0011] Preferably, a nut II is rotatably arranged on the lock cover. A convex ring II is arranged at one end of the nut II, and the convex ring II is connected in the connecting groove II.

[0012] Preferably, a limiting groove II is arranged inside the lock cover. The limiting groove II and the connecting groove II are vertically arranged. A limiting plate II is arranged on the convex ring II, and the limiting plate II is arranged in the limiting groove II.

[0013] The utility model has the following advantages and beneficial effects:

[0014] First, in the utility model, the part is first sleeved on the washer and the spacer sleeve. When the lock plate is in close contact with the end of the mandrel, the lock plate presses the pressing ring, so that the washer is extruded and protrudes outwards, and is in close contact with the inner hole of the part, realizing the effect of supporting the part. When the locking assembly and the mandrel are separated, the washer is restored, and the part can be directly removed, which greatly protects the quality of the inner hole of the part.

[0015] Second, in the utility model, the lock plate and the nut I are integrated. The nut I rotates on the lock plate, and the same is true for the lock cover and the nut II. When disassembling and assembling, rotating the nut I and the nut II can synchronously disassemble and assemble the lock plate and the lock cover, without disassembling and assembling the four components separately, saving the processing time. Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional connection diagram of a part grinding and processing support device provided by the utility model;

[0017] Figure 2 It is a connection diagram of the washer, spacer sleeve and pressing ring of a part grinding and processing support device provided by the utility model;

[0018] Figure 3 It is a cross-sectional view of a part grinding and processing support device provided by the utility model;

[0019] Figure 4 It is a cross-sectional view of the lock plate of a part grinding and processing support device provided by the utility model;

[0020] Figure 5Cross-sectional view of the lock cover of a part grinding and processing support device provided by the present utility model;

[0021] Figure 6 Cross-sectional view of the nut of a part grinding and processing support device provided by the present utility model;

[0022] Icon: A - part, 1 - mandrel, 2 - threaded rod, 3 - washer, 4 - spacer sleeve, 5 - pressing ring, 6 - lock plate, 61 - opening Ⅰ, 62 - connecting groove Ⅰ, 63 - limiting groove Ⅰ, 7 - nut Ⅰ, 71 - convex ring Ⅰ, 72 - limiting plate Ⅰ, 8 - lock cover, 81 - opening Ⅱ, 82 - connecting groove Ⅱ, 83 - limiting groove Ⅱ, 9 - nut Ⅱ, 91 - convex ring Ⅱ, 92 - limiting plate Ⅱ. Specific embodiments

[0023] To make the objectives, 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0024] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model that is claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] Embodiment

[0026] As Figure 1-3 shown, a part grinding and processing support device includes a mandrel 1 and washers 3 and a locking assembly arranged on the mandrel 1. The mandrel 3 is a multi-stage stepped shaft. A plurality of washers 3 are detachably connected to the mandrel 1. The washers 3 have a certain elasticity. An annular spacer sleeve 4 is arranged between adjacent washers 3. An annular pressing ring 5 is arranged at the end of the mandrel 1. The pressing ring 5 is arranged at the end of the mandrel 1 and extends a certain distance beyond the end of the mandrel 1. The part A is connected to the outside of the washers 3, the spacer sleeve 4, and the pressing ring 5. When the pressing ring 5 is squeezed along the direction of the mandrel 1, the spacer sleeve 4 slides on the mandrel 1 and squeezes the washer 3, causing the washer 3 to undergo elastic deformation and bulge towards the outside of the mandrel 1, increasing the outer diameter of the washer 3 to tension the inner wall of the part A for fixation.

[0027] As Figure 1-6As shown in the figure, a threaded rod 2 is provided at the end of the mandrel 1. The locking assembly includes a locking plate 6 and a locking cover 8. An opening I 61 is provided in the middle of the locking plate 6. The threaded rod 2 passes through the opening I 61. An opening II 81 is provided in the middle of the locking cover 8. The threaded rod 2 passes through the opening II 81. The locking plate 6 and the locking cover 8 are slidably connected to the threaded rod 2. A connecting groove I 62 is provided on the locking plate 6. The connecting groove I 62 is provided outside the opening I 61. A nut I 7 is rotatably provided on the locking plate 6. A convex ring I 71 is provided at one end of the nut I 7. The convex ring I 71 is connected in the connecting groove I 62. A limiting groove I 63 is provided inside the locking plate 6. The limiting groove I 63 is perpendicular to the connecting groove I 62. A limiting plate I 72 is provided on the convex ring I 71. The limiting plate I 72 is provided in the limiting groove I 63. The nut I 7 is connected to the locking plate 6 through the convex ring I 71 and the limiting plate I 72. At the same time, when the nut I 7 rotates, the convex ring I 71 and the limiting plate I 72 rotate inside the locking plate 6. When the nut I 7 is screwed onto the threaded rod 2, the locking plate 6 can be driven to move towards the mandrel 1. When the nut I 7 is unscrewed from the threaded rod 2, the locking plate 6 can be driven to slide out of the threaded rod 2 synchronously. The structure connecting the nut I 7 and the locking plate 6 can achieve disassembly and assembly more efficiently. When the locking plate 6 abuts against the end of the mandrel 1, the locking plate (6) and the pressing ring (5) are in close contact, and the pressing ring 5 is squeezed, so that the washer 3 is deformed by extrusion and is in close contact with the inner wall of the part A.

[0028] As Figure 1-6 shown, the inside of the locking cover 8 is hollow. When one end of the locking cover 8 abuts against the part A, the locking plate 6 is connected to the threaded rod 2 and is inside the locking cover 8. A connecting groove II 82 is provided on the locking cover 8. The connecting groove II 82 is provided outside the opening II 81. A nut II 9 is rotatably provided on the locking cover 8. A convex ring II 91 is provided at one end of the nut II 9. The convex ring II 91 is connected in the connecting groove II 82. A limiting groove II 83 is provided inside the locking cover 8. The limiting groove II 83 is perpendicular to the connecting groove II 82. A limiting plate II 92 is provided on the convex ring II 91. The limiting plate II 92 is provided in the limiting groove II 83. The connection method of the nut II 9 and the nut I 7 is the same. Rotating the nut II 9 can make the locking cover 8 move on the threaded rod 2 to realize the disassembly and assembly of the locking cover 8.

[0029] As Figure 1-6As shown in the figure, first, a washer 3 and a spacer sleeve 4 are sleeved on the mandrel 1, and the two are installed alternately. Then, a pressing ring 5 is sleeved at the end of the mandrel 1. The part A is sleeved on the washer 3, the spacer sleeve 4 and the pressing ring 5. The locking plate 6 is aligned with the threaded rod 2, and a nut Ⅰ7 is screwed onto the threaded rod 2 so that the locking plate 6 is pressed against the mandrel 1. The locking plate 6 also contacts the pressing ring 5, pushing the pressing ring 5 and thus causing the washer 3 to be squeezed by the spacer sleeve 4. Since the washer 3 is made of an elastic material, it protrudes a certain distance during the squeezing process and is in close contact with the inner hole of the part A, which not only plays a role in supporting the part A but also prevents the inner hole of the part A from being worn. Then, the locking cover 8 is aligned with the threaded rod 2, and a nut Ⅱ9 is screwed onto the threaded rod 2 so that one end of the locking cover 8 abuts against the part A, further fixing the part A on the mandrel 1 for grinding. After grinding, they can be removed in sequence.

[0030] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. 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. A supporting device for grinding a part, comprising a mandrel (1) and a washer (3) and a locking assembly arranged on the mandrel (1), characterized in that, A number of washers (3) are detachably connected to the mandrel (1). The washers (3) are elastic. An annular spacer sleeve (4) is provided between adjacent washers (3). An annular pressing ring (5) is provided at the end of the mandrel (1). The pressing ring (5) is arranged at the end of the mandrel (1). The part (A) is connected to the outside of the washers (3), the spacer sleeve (4) and the pressing ring (5). A threaded rod (2) is provided at the end of the mandrel (1). The locking assembly includes a lock plate (6) and a lock cover (8). The lock plate (6) and the lock cover (8) are slidably connected to the threaded rod (2). The lock plate (6) is in close contact with the pressing ring (5). The lock cover (8) is connected to the outside of the lock plate (6) and one end abuts against the part (A).

2. The supporting device for part grinding and machining according to claim 1, characterized in that: An opening I (61) is provided in the middle of the lock plate (6). The threaded rod (2) passes through the opening I (61). A connecting groove I (62) is provided on the lock plate (6). The connecting groove I (62) is arranged outside the opening I (61).

3. A part grinding and processing support device according to claim 2, characterized in that: A nut I (7) is rotatably provided on the lock plate (6). A convex ring I (71) is provided at one end of the nut I (7). The convex ring I (71) is connected in the connecting groove I (62).

4. The supporting device for part grinding processing according to claim 3, wherein: A limiting groove I (63) is provided inside the lock plate (6). The limiting groove I (63) is perpendicular to the connecting groove I (62). A limiting plate I (72) is provided on the convex ring I (71). The limiting plate I (72) is arranged in the limiting groove I (63).

5. The support device for part grinding and machining according to claim 1, wherein: The inside of the lock cover (8) is hollow. When one end of the lock cover (8) abuts against the part (A), the lock plate (6) is connected to the threaded rod (2). And inside the lock cover (8), an opening II (81) is provided in the middle of the lock cover (8). The threaded rod (2) passes through the opening II (81). A connecting groove II (82) is provided on the lock cover. The connecting groove II (82) is arranged outside the opening II (81).

6. The support device for part grinding processing according to claim 5, characterized in that: A nut II (9) is rotatably provided on the lock cover (8). A convex ring II (91) is provided at one end of the nut II (9). The convex ring II (91) is connected in the connecting groove II (82).

7. The supporting device for grinding and machining of parts according to claim 6, characterized in that: A limiting groove II (83) is provided inside the lock cover (8). The limiting groove II (83) is perpendicular to the connecting groove II (82). A limiting plate II (92) is provided on the convex ring II (91). The limiting plate II (92) is arranged in the limiting groove II (83).

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