Tool for machining part with local protrusion in hole and corresponding outer circle groove

Abstract

The utility model relates to a tool used for machining a part with a local protrusion in a hole and a corresponding outer circle groove, the end, to be machined, of the part is a cylindrical end, and the tool comprises a positioning sleeve, a neck bush and a punch. A positioning hole is formed in the positioning sleeve in a penetrating mode, and a punch hole matched with the punch is formed in the side wall of the positioning hole in a penetrating mode. The inner lining sleeve comprises an inner lining head and an inner lining groove formed in the side wall of the inner lining head. The lining head is matched with the barrel-shaped end part and the positioning hole, so that the lining head can be embedded into the barrel-shaped end part, and the lining head and the inner wall of the positioning hole clamp and limit the barrel-shaped end part; and the punch is used for penetrating through the punch hole and punching the side wall of the cylindrical end part into the lining groove, so that a groove is formed in the outer wall of the cylindrical end part, and a bulge is formed on the inner wall of the cylindrical end part. Compared with the prior art, the punching device is easy to operate, ingenious in structure and accurate in punching, the problems of punching deviation and the like are avoided, the operation difficulty is greatly reduced, and the use safety, accuracy and reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial mechanical device technical field especially is related to a kind of tooling for processing the part of local protrusion in hole and corresponding outer circle groove. BACKGROUND

[0002] Processing a kind of part, need to have two corresponding protrusions on its inner hole, while outer circle is processed with two corresponding grooves, groove and protrusion are located in the same direction, and the height requirement of protrusion (groove) part needs to be three decimal places, precision is difficult to achieve. With conventional mechanical processing mode, it is difficult to process the style of inner hole protrusion and outer circle groove, if using processing mode such as casting, the dimensional accuracy of inner hole protrusion and outer circle groove cannot be met.

[0003] To meet market demand, reduce operation difficulty, improve operation efficiency, a kind of processing tooling that can quickly handle such parts and meet dimensional accuracy is needed. SUMMARY

[0004] The utility model discloses a kind of tooling for processing the part of local protrusion in hole and corresponding outer circle groove, to overcome the defects of the above prior art.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The technical scheme of the utility model provides a kind of tooling for processing local hole protrusion and outer circle groove part, the end to be processed of part is cylindrical end,

[0007] Tooling includes positioning sleeve, inner bushing and punch;

[0008] Positioning sleeve is provided with positioning hole, and punch hole matched with punch is provided on the side wall of positioning hole;The inner bushing includes inner punch, and inner bushing groove is provided on the side wall of inner punch;

[0009] The inner punch is matched with cylindrical end and positioning hole, so that the inner punch can be embedded in cylindrical end, and the cylindrical end is clamped and limited by the inner wall of positioning hole;

[0010] The punch is used to pass through punch hole and stamp cylindrical end side wall into inner bushing groove, to form groove on the outer wall of cylindrical end, and protrusion on the inner wall.

[0011] In some specific embodiments, a plurality of limit protrusions are provided on the inner wall of positioning hole and spaced apart in circumferential direction, limit slot is provided on the side wall of cylindrical end, and the limit protrusion and limit slot are inserted and matched to rotate limit cylindrical end.

[0012] In some embodiments, the inner sleeve includes an inner sleeve body, and a positioning surface is arranged on the inner sleeve body, and the inner sleeve head is arranged on the positioning surface;

[0013] The positioning surface is matched with the end surface of the positioning sleeve with the positioning hole and the end surface of the cylindrical end portion, so that when the cylindrical end portion and the inner sleeve head are inserted and connected in the positioning hole, the positioning surface abuts against the end surface of the positioning sleeve with the positioning hole and the end surface of the cylindrical end portion.

[0014] In some embodiments, the positioning surface and the end surface of the positioning sleeve with the positioning hole are both flat surfaces.

[0015] In some embodiments, a chamfer is arranged on the opening inner edge of the cylindrical end portion to facilitate insertion.

[0016] In some embodiments, the inner sleeve groove is an annular groove and is arranged on the side wall of the inner sleeve head in the circumferential direction.

[0017] In some embodiments, the outer wall surface of the inner sleeve head includes a support arc surface and a give-way flat surface connected in the circumferential direction, the distance from the support arc surface to the center of the inner sleeve head is greater than the distance from the give-way flat surface to the center of the inner sleeve head, and the distance difference is not less than the height of the protrusion, so that the support arc surface can clamp and limit the cylindrical end portion with the inner wall of the positioning hole, and when the give-way flat surface is opposite to the protrusion on the inner wall, the inner sleeve head can be pulled out from the cylindrical end portion.

[0018] In some embodiments, the outer wall surface of the inner sleeve head includes two groups of support arc surfaces and give-way flat surfaces arranged alternately, the support arc surfaces are arranged opposite to each other, and the give-way flat surfaces are arranged opposite to each other.

[0019] In some embodiments, a gasket is further arranged on the positioning sleeve, a through hole is arranged on the gasket and communicates with the punch hole, and the punch sequentially passes through the through hole and the punch hole to perform stamping processing on the cylindrical end portion.

[0020] In some embodiments, the length of the punch satisfies that when the punch is stamped to form the groove, the end surface of the punch is flush with the end surface of the gasket.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] (1) The tool for machining the part with the local hole and the corresponding outer circular groove can adopt the carbon steel with the hardness of HRC45~50 after heat treatment, so that the service life is long.

[0023] (2) The utility model discloses simple operation, and the structure is ingenious, and the stamping is accurate, and will not appear stamping deviation and other problems, also greatly reduced the operation difficulty, improved use safety, accuracy, reliability.

[0024] (3) The structure of the utility model is the spare part with good interchangeability of size, if single component is damaged, can exchange new component, and the phenomenon of influence unable to process will not appear. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure explosion schematic view of the utility model.

[0026] Figure 2 It is the structure sectional view of the utility model when processing.

[0027] Figure 3 It is the structure sectional view of the utility model when disassembling.

[0028] Figure 4 It is the part structure front view of the utility model after processing.

[0029] Figure 5 It is the part structure side view of the utility model after processing.

[0030] Identified in the drawing as follows:

[0031] 1 is a part, 11 is a cylindrical end, 12 is a groove, 13 is a protrusion, 14 is a limiting slot, 2 is a punch, 3 is a gasket, 4 is a positioning sleeve, 41 is a positioning hole, 42 is a limiting convex rib, 5 is an inner bushing, 51 is an inner bushing head, 52 is an inner bushing body, 53 is an inner bushing groove, 6 is a stamping hole, and 7 is a through hole. DETAILED DESCRIPTION

[0032] The utility model will be described in detail below in combination with the drawings and specific embodiments. The embodiment is implemented on the premise of the technical scheme of the utility model, and detailed implementation mode and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

[0033] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0034] Some embodiments of the utility model will be described in detail below in combination with the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0035] In the following examples, if there is no special description of the function components or structure, it indicates that they are all conventional components or conventional structures adopted in the field to realize the corresponding functions.

[0036] Embodiment 1:

[0037] The embodiment provides a tool shown in the drawings for machining a part 1 shown in the drawings into a local protrusion in a hole and a corresponding outer circular groove, and one end of the part 1 to be machined is a cylindrical end 11. Figure 1 Figures 4-5 The tool includes a positioning sleeve 4, an inner sleeve 5 and a punch 2, the positioning sleeve 4 is provided with a positioning hole 41 penetrating through the positioning sleeve 4, and a punch hole 6 adapted to the punch 2 is penetratingly formed in the side wall of the positioning hole 41; the inner sleeve 5 includes an inner punch 51 and an inner sleeve groove 53 formed in the side wall of the inner punch 51.

[0038] As shown in the drawings, the tool includes a positioning sleeve 4, an inner sleeve 5 and a punch 2, the positioning sleeve 4 is provided with a positioning hole 41 penetrating through the positioning sleeve 4, and a punch hole 6 adapted to the punch 2 is penetratingly formed in the side wall of the positioning hole 41; the inner sleeve 5 includes an inner punch 51 and an inner sleeve groove 53 formed in the side wall of the inner punch 51. Figures 1-3 The inner punch 51 is adapted to the cylindrical end 11 and the positioning hole 41, so that the inner punch 51 can be embedded in the cylindrical end 11 and clamp the cylindrical end 11 to the inner wall of the positioning hole 41.

[0039] The punch 2 is used to pass through the punch hole 6 and stamp the side wall of the cylindrical end 11 into the inner sleeve groove 53, so as to form a groove 12 on the outer wall of the cylindrical end 11 and a protrusion 13 on the inner wall.

[0040] In the technical solution, the cylindrical end 11 is fixed and limited between surfaces from the inside and the outside by the inner punch 51 and the positioning sleeve 4, so that the deviation of the part 1 during machining can be effectively avoided. The punch 2 is used to stamp the cylindrical end 11 to form the outer circular groove 12 and the inner hole protrusion 13 corresponding in the same direction. The technical solution not only can stamp the side wall of the cylindrical end 11 to be concave to a specified depth, but also can make the surrounding of the formed protrusion 13 (groove 12) not follow the collapse, effectively guaranteeing the accuracy of the height dimension of the protrusion 13 (groove 12). For example, the inner hole diameter is 6.35 cm, the spacing between the two inner hole protrusions 13 is 4.726 cm, and the height of a single protrusion 13 is 0.812 cm. Moreover, the stamping process has strong adaptability and can be applied to the machining of metal plates of various materials and shapes, such as brass C36000.

[0041] More specifically, a plurality of limiting ribs 42 can be formed on the inner wall of the positioning hole 41 in a circumferential direction, and a limiting slot 14 is arranged on the side wall of the cylindrical end 11, and the limiting rib 42 is inserted and matched with the limiting slot 14 to rotate the cylindrical end 11.

[0042]

[0043] ​​The inner liner 5 comprises an inner liner body 52, a positioning surface is arranged on the inner liner body 52, and the inner liner head 51 is arranged on the positioning surface; the positioning surface is matched with an end surface of the positioning sleeve 4, on which the positioning hole 41 is arranged, and an end surface of the cylindrical end part 11, so that when the cylindrical end part 11 and the inner liner head 51 are inserted and matched in the positioning hole 41, the positioning surface is abutted with the end surface of the positioning sleeve 4, on which the positioning hole 41 is arranged, and the end surface of the cylindrical end part 11, and as a more preferred, the positioning surface and the end surface of the positioning sleeve 4, on which the positioning hole 41 is arranged, are both planes, and when the cylindrical end part 11 and the inner liner head 51 are inserted and matched in the positioning hole 41, the positioning surface and the end surface of the positioning sleeve 4, on which the positioning hole 41 is arranged, are abutted and matched in a plane.

[0044] A chamfer is arranged on an opening inner edge of the cylindrical end part 11 to facilitate insertion. The inner liner groove 53 is an annular groove and is arranged on a side wall of the inner liner head 51 in a circumferential direction.

[0045] An outer wall surface of the inner liner head 51 comprises a support arc surface and a giving-in plane which are connected in a circumferential direction, a distance from the support arc surface to a center of the inner liner head 51 is greater than a distance from the giving-in plane to the center of the inner liner head 51, and a distance difference is not less than a height of the protrusion 13, so that the support arc surface can clamp and limit the cylindrical end part 11 with an inner wall of the positioning hole 41, and when the giving-in plane is opposite to the protrusion 13 on the inner wall, the inner liner head 51 can be pulled out from the cylindrical end part 11. As a more preferred, the outer wall surface of the inner liner head 51 comprises two groups of support arc surfaces and giving-in planes which are arranged alternately, the support arc surfaces are arranged opposite to each other, and the giving-in planes are arranged opposite to each other. During processing, the inner liner head 51 only needs to be turned over by 90° to complete disassembly of the inner liner head 51.

[0046] The positioning sleeve 4 is further provided with a gasket 3, the gasket 3 is used for buffering damage of a punch hole 6 around the positioning sleeve 4 caused by a punching force of a punch 2, a through hole 7 is arranged on the gasket 3 and is communicated with the punch hole 6, and the punch 2 passes through the through hole 7 and the punch hole 6 in sequence to punch and process the cylindrical end part 11.

[0047] A length of the punch 2 satisfies that when the punch 2 is punched to form the recess 12, an end surface of the punch 2 is flush with an end surface of the gasket 3. By converting a depth of the measured recess 12 into a position relationship between the punch 2 and the gasket 3, the depth of the recess 12 can be more intuitively known.

[0048] As shown in Figures 2-3 The steps of processing the part 1 are shown as follows:

[0049] First, the cylindrical end 11 side of the part 1 is inserted into the positioning hole 41 of the positioning sleeve 4, and the limiting convex rib 42 on the inner wall of the positioning hole 41 is inserted into the limiting slot 14 of the cylindrical end 11 to rotate the limiting cylindrical end 11, so that the end face of the hollow cylinder 11 is flush with the end face of the positioning hole 41;

[0050] Then, the inner liner head 51 of the inner liner sleeve 5 is inserted into the cylindrical end 11 from the other side of the positioning hole 41, the upper and lower sides of the inner liner head 51 are supported by the arc surface close to the inner wall surface of the hollow cylinder 11, and the end face of the positioning sleeve 4 with the positioning hole (41) is abutted and fitted with the positioning face of the inner liner body 52;

[0051] Next, the gasket 3 is placed on the positioning sleeve 4 and aligned with the stamping hole 6 and the through hole 7;

[0052] Finally, the punch 2 is pressed into the through hole 7 and the stamping hole 6 in sequence by the press, until the upper end face of the punch 2 is flush with the upper end face of the gasket 3, that is, a group of outer circular grooves 12 and inner hole protrusions 13 in the same direction on the part 1 are completed;

[0053] After the punch 2 and the gasket 3 are pulled out, the entire device is turned over by 180°, and the same way is used on the other side of the positioning sleeve 4 to perform stamping forming.

[0054] When two groups of outer circular grooves 12 and inner hole protrusions 13 in the same direction are completed, the tooling is disassembled. When disassembling, the punch 2 and the gasket 3 are pulled out first, then the inner liner body 52 is clamped with hand tongs to turn over by 90°, so that the accommodation plane of the inner liner head 51 is opposite to the protrusion 13 on the inner wall of the cylindrical end 11, the inner liner head 51 is pulled out from the cylindrical end 11, and then the part 1 is taken out by rotating the cylindrical end 11.

[0055] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. Those skilled in the art can obviously make various modifications to these embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the utility model is not limited to the above embodiments, and those skilled in the art can make improvements and modifications within the scope of the utility model without departing from the scope of the utility model.

Claims

1. A tooling for machining a part with a local protrusion in a bore and a corresponding external circular groove, the part (1) having a cylindrical end (11) to be machined at one end, characterised in that, The tooling includes a positioning sleeve (4), an inner sleeve (5) and a punch (2); The positioning sleeve (4) is provided with a positioning hole (41) penetrating through the positioning sleeve (4), and a punch hole (6) penetrating through the side wall of the positioning hole (41) and matched with the punch (2); the inner sleeve (5) includes an inner sleeve head (51) and an inner sleeve groove (53) provided on the side wall of the inner sleeve head (51); The inner sleeve head (51) is matched with the cylindrical end (11) and the positioning hole (41), so that the inner sleeve head (51) can be embedded in the cylindrical end (11) and hold the cylindrical end (11) by the inner wall of the positioning hole (41). The punch (2) is used to pass through the punch hole (6) and stamp the side wall of the cylindrical end (11) into the inner sleeve groove (53), so as to form a groove (12) on the outer wall of the cylindrical end (11) and a protrusion (13) on the inner wall.

2. The tooling of claim 1, wherein, A plurality of limiting convex edges (42) are circumferentially spaced apart on the inner wall of the positioning hole (41), and a limiting slot (14) is provided on the side wall of the cylindrical end (11), the limiting convex edges (42) and the limiting slot (14) are inserted and matched to rotate the cylindrical end (11).

3. The tooling of claim 1, wherein, The inner sleeve (5) includes an inner sleeve body (52), and the inner sleeve head (51) is provided on the positioning surface of the inner sleeve body (52); The positioning surface is matched with the end surface of the positioning sleeve (4) provided with the positioning hole (41) and the end surface of the cylindrical end (11), so that when the cylindrical end (11) and the inner sleeve head (51) are inserted and matched in the positioning hole (41), the positioning surface abuts against the end surface of the positioning sleeve (4) provided with the positioning hole (41) and the end surface of the cylindrical end (11).

4. The tooling of claim 3, wherein, The positioning surface and the end surface of the positioning sleeve (4) provided with the positioning hole (41) are both flat surfaces.

5. The tooling of claim 1, wherein, The opening inner edge of the cylindrical end (11) is provided with a chamfer for easy insertion.

6. The tooling of claim 1 wherein, The inner sleeve groove (53) is an annular groove and is circumferentially provided on the side wall of the inner sleeve head (51).

7. The tooling of claim 1 wherein, The outer wall surface of the inner sleeve head (51) includes a support arc surface and a give-way flat surface connected circumferentially, the distance from the support arc surface to the center of the inner sleeve head (51) is greater than the distance from the give-way flat surface to the center of the inner sleeve head (51), and the distance difference is not less than the height of the protrusion (13), so that the support arc surface can hold and limit the cylindrical end (11) with the inner wall of the positioning hole (41), and when the give-way flat surface is opposite to the protrusion (13) on the inner wall, the inner sleeve head (51) can be pulled out of the cylindrical end (11).

8. The tooling of claim 7, wherein, The outer wall surface of the inner sleeve head (51) includes two groups of support arc surfaces and give-way flat surfaces arranged alternately, the support arc surfaces are arranged opposite to each other, and the give-way flat surfaces are arranged opposite to each other.

9. The tooling of claim 1 wherein, The positioning sleeve (4) is further provided with a gasket (3), the gasket (3) is provided with a through hole (7) penetrating through the gasket (3) and communicating with the punch hole (6), and the punch (2) passes through the through hole (7) and the punch hole (6) in sequence to stamp the cylindrical end (11).

10. The tooling of claim 9, wherein, The length of the punch (2) satisfies that when the punch (2) is punched to form the groove (12), the end face of the punch (2) is flush with the end face of the gasket (3).

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