Group hole machining, positioning and clamping jig for conical safety filter screen

Abstract

The utility model provides a group hole machining, positioning and clamping jig for a conical safety filter screen. The group hole machining, positioning and clamping jig comprises a frustum positioning rod, a locking nut and an opposite-wall protection core. The lower end of the opposite-wall protection core is connected to the upper end of the frustum positioning rod, the locking nut is used for locking the conical safety filter screen on the frustum positioning rod, and an internal space is formed between the locking nut and the frustum positioning rod. A positioning conical boss is arranged at the upper end of the frustum positioning rod; after the conical safety filter screen is locked on the frustum positioning rod through the locking nut, the peripheral wall of the positioning conical boss is tightly attached to the inner wall face of the lower end of the conical safety filter screen. The group hole machining, positioning and clamping jig for the conical safety filter screen can effectively ensure the consistency of repeated clamping precision of products, and improves the machining quality and the machining efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping fixtures, in particular to a processing positioning and clamping fixture for a filter screen. Background Art

[0002] Most of the existing tooling fixtures for conical safety filter screens use the self-threads of the products for locking and fixing. Due to the gaps existing in the thread locking of this traditional tooling fixture and the lack of positioning reference, the consistency of repeated clamping is poor. In addition, since the tooling fixture itself has no through cavity, during the process of laser high-frequency group hole machining, the phenomenon of molten residue blocking the holes is likely to occur, seriously affecting the machining effect and reducing the machining efficiency. Summary of the Utility Model

[0003] The utility model provides a group hole machining positioning and clamping fixture for a conical safety filter screen, which can effectively ensure the consistency of the repeated clamping accuracy of the product and improve the machining quality and machining efficiency.

[0004] The technical solution adopted by the utility model is as follows: a group hole machining positioning and clamping fixture for a conical safety filter screen, which comprises: a frustum positioning rod, a locking nut and a counter wall protection core; the lower end of the counter wall protection core is connected to the upper end of the frustum positioning rod, the locking nut is used to lock the conical safety filter screen on the frustum positioning rod, and an internal space is formed between the locking nut and the frustum positioning rod;

[0005] The upper end of the frustum positioning rod is provided with a positioning conical boss; when the locking nut locks the conical safety filter screen on the frustum positioning rod, the outer peripheral wall of the positioning conical boss is closely attached to the inner wall surface of the lower end of the conical safety filter screen.

[0006] Further, the positioning conical boss is provided with a ventilation channel, the ventilation channel penetrates upward through the top surface of the positioning conical boss and downward through the side wall of the frustum positioning rod, and the ventilation channel communicates with the internal circulation gap and the internal space; the locking nut is provided with a ventilation hole, and the ventilation hole communicates the internal space with the outside.

[0007] Further, the conical safety filter screen surrounds the counter wall protection core, and an internal circulation gap is formed between the conical safety filter screen and the counter wall protection core, and the ventilation channel communicates the internal space and the internal circulation gap.

[0008] Further, the top surface of the positioning conical boss is concavely provided with an installation groove, and the lower end of the counter wall protection core is inserted into the installation groove.

[0009] Further, an annular convex portion extends laterally from the upper end of the frustum-shaped positioning rod. The convex portion is located below the positioning conical boss, and an annular air flow groove is formed circumferentially between the convex portion and the positioning conical boss. The lower outlet of the air passage communicates with the air flow groove. After the locking nut locks the conical safety filter onto the frustum-shaped positioning rod, the ventilation holes are aligned with the lower outlets of the air passages located within the air flow groove.

[0010] Further, the internal flow gap, the air passage, the air flow groove, the internal space, and the ventilation holes form an air flow channel.

[0011] Further, an axial partition wall is formed within the air flow groove. The partition wall divides the air flow groove into compartments, and the compartments communicate with the air passages.

[0012] Further, an internal thread is provided at the upper end inside the locking nut, and an external thread is provided at the lower end outside the conical safety filter. The internal thread and the external thread cooperate to lock.

[0013] Compared with the prior art, the positioning and clamping fixture for machining the group holes of the conical safety filter of the present utility model sets a positioning conical platform on the frustum-shaped positioning rod, so that the outer peripheral wall of the positioning conical boss is closely attached to the inner wall surface of the lower end of the conical safety filter, achieving the purpose of product positioning and effectively ensuring the consistency of the repeated clamping accuracy of the conical safety filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model and form a part of the specification, and are used together with the following specific embodiments to explain the present utility model, but should not be construed as limiting the present utility model. In the drawings,

[0015] Figure 1 : Three-dimensional exploded view of the positioning and clamping fixture for machining the group holes of the conical safety filter of the present utility model;

[0016] Figure 2 : Partial three-dimensional structure view of the positioning and clamping fixture for machining the group holes of the conical safety filter of the present utility model;

[0017] Figure 3 : Planar assembly view of the positioning and clamping fixture for machining the group holes of the conical safety filter of the present utility model;

[0018] Figure 4 : Figure 3 Cross-sectional view along line A-A. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following detailed description of the specific embodiments of the present utility model is provided in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation, and are not intended to limit the present utility model.

[0020] As Figure 1 and Figure 2 and Figure 4 As shown, the jig for positioning and clamping the group holes of the conical safety filter screen 100 of the present utility model includes a conical platform positioning rod 1, a locking nut 2, and a wall protection core 3; wherein, the lower end of the wall protection core 3 is connected to the upper end of the conical platform positioning rod 1, and the locking nut 2 is used to lock the conical safety filter screen 100 on the conical platform positioning rod 1, and an internal space 4 is formed between the locking nut 2 and the conical platform positioning rod 1. The conical safety filter screen 100 surrounds the wall protection core 3, and an internal flow gap 5 is formed between the conical safety filter screen 100 and the wall protection core 3.

[0021] Specifically, the upper end inside the locking nut 2 is provided with an internal thread, and the lower end outside the conical safety filter screen 100 is provided with an external thread. Through the mutual cooperation of the internal thread and the external thread, the conical safety filter screen 100 is locked on the conical platform positioning rod 1.

[0022] The upper end of the conical platform positioning rod 1 is provided with a positioning conical boss 6; when the locking nut 2 locks the conical safety filter screen 100 on the conical platform positioning rod 1, the outer peripheral wall of the positioning conical boss 6 is closely attached to the inner wall surface of the lower end of the conical safety filter screen 100, achieving the purpose of product positioning and effectively ensuring the consistency of the repeated clamping accuracy of the conical safety filter screen 100.

[0023] The top surface of the positioning conical boss 6 is concavely provided with an installation groove 9, and the lower end of the wall protection core 3 is inserted into the installation groove 9, thereby realizing the connection between the wall protection core 3 and the conical platform positioning rod 1. The positioning conical boss 6 is provided with a plurality of ventilation channels 10, and the plurality of ventilation channels 10 are circumferentially distributed along the top surface of the positioning boss 6. Each ventilation channel 10 penetrates upward through the top surface of the positioning conical boss 6 and downward through the side wall of the conical platform positioning rod 1, so that the internal flow gap 5 is communicated with the internal space 4 through the ventilation channels 10.

[0024] In a preferred embodiment, the upper end of the conical platform positioning rod 1 also laterally extends an annular protruding portion 7, and the protruding portion 7 is located below the positioning conical boss 6, so that an annular air flow groove 8 is formed along the circumferential direction between the protruding portion 7 and the positioning conical boss 6; the lower outlet of each ventilation channel 10 is located in the air flow groove 8.

[0025] In another preferred embodiment, a plurality of axial partition walls 81 are formed in the air flow groove 8, thereby dividing the air flow groove 8 into a plurality of compartments 82, and each compartment 82 corresponds to and communicates with each ventilation channel 10; thereby effectively improving the discharge rate of the molten residue, further improving the smoothness inside the product cavity, and improving the processing efficiency.

[0026] As Figures 2 to 4As shown in the figure, further, the locking nut 2 is provided with a plurality of vent holes 11, and the plurality of vent holes 11 communicate the internal space 4 with the outside. After the locking nut 2 locks the conical safety filter screen 100 on the frustum positioning rod 1, each vent hole 11 is aligned with each compartment 82, so that the internal flow gap 5 → air passage 10 → air flow groove 8 → internal space 4 → vent hole 11 → outside, forming an air flow channel from the inside to the outside; thus, when laser processing the group holes of the conical safety filter screen 100, the combustion-supporting oxygen ejected by the processing head can penetrate the cavity and fully support combustion; and the molten residues generated also smoothly discharge to the outside along with the air flow, greatly improving the processing quality of the group holes of the conical safety filter screen 100 and the smoothness of the cavity of the conical safety filter screen 100, making the post-processing process simple, effectively shortening the entire processing cycle of the conical safety filter screen 100, and at the same time greatly improving the efficiency of the conical safety filter screen 100 in batch laser group hole processing.

[0027] In summary, the group hole processing positioning and clamping fixture for the conical safety filter screen 100 of the present utility model has the following advantages:

[0028] 1. By providing a positioning conical platform on the frustum positioning rod 1, the outer peripheral wall of the positioning conical boss 6 is closely attached to the inner wall surface of the lower end of the conical safety filter screen 100, achieving the purpose of product positioning and effectively ensuring the consistency of the repeated clamping accuracy of the conical safety filter screen 100.

[0029] 2. By providing an air passage 10 on the positioning conical platform and vent holes 11 on the locking nut 2, and the vent holes 11 are aligned with the air passage 10, the internal flow gap 5 is communicated with the outside through the air passage 10 and the vent holes 11. Thus, when laser processing the group holes of the conical safety filter screen 100, the combustion-supporting oxygen ejected by the processing head can penetrate the cavity and fully support combustion; and the molten residues generated also smoothly discharge to the outside along with the air flow, greatly improving the processing quality of the group holes of the conical safety filter screen 100 and the smoothness of the cavity of the conical safety filter screen 100, making the post-processing process simple, effectively shortening the entire processing cycle of the conical safety filter screen 100, and at the same time greatly improving the efficiency of the conical safety filter screen 100 in batch laser group hole processing.

[0030] As long as it does not violate the idea of the creation of the present utility model, any combination of various different embodiments of the present utility model shall be regarded as the content disclosed by the present utility model; within the scope of the technical concept of the present utility model, various simple modifications of the technical solutions and any combination of different embodiments that do not violate the idea of the creation of the present utility model shall be within the protection scope of the present utility model.

Claims

1. A group hole processing positioning fixture for a conical safety filter, characterized in that: include: A frustum positioning rod (1), a locking nut (2) and a wall protection core (3); the lower end of the wall protection core (3) is connected to the upper end of the frustum positioning rod (1), the locking nut (2) is used to lock the conical safety filter (100) on the frustum positioning rod (1), and an internal space (4) is formed between the locking nut (2) and the frustum positioning rod (1); A positioning conical boss (6) is provided at the upper end of the cone positioning rod (1); when the locking nut (2) locks the conical safety filter (100) on the cone positioning rod (1), the outer peripheral wall of the positioning conical boss (6) is tightly fitted with the inner wall surface of the lower end of the conical safety filter (100).

2. The hole group processing positioning fixture of the conical safety filter according to claim 1 is characterized in that: The positioning conical boss (6) is provided with an air passage (10), the air passage (10) penetrates upwardly through the top surface of the positioning conical boss (6) and penetrates downwardly through the side wall of the cone positioning rod (1), the air passage (10) is connected to the internal space (4); the locking nut (2) is provided with an air hole (11), the air hole (11) is connected to the internal space (4) and the outside.

3. The hole group processing positioning fixture of the conical safety filter according to claim 2 is characterized in that: The conical safety filter (100) is surrounded by the opposite wall protection core (3), and an internal circulation gap (5) is formed between the conical safety filter (100) and the opposite wall protection core (3), and the air passage (10) communicates the internal space (4) and the internal circulation gap (5).

4. The positioning and clamping fixture for processing the group holes of the conical safety filter according to claim 1, characterized in that: The top surface of the positioning conical boss (6) is concavely provided with a mounting groove (9), and the lower end of the wall protection core (3) is inserted into the mounting groove (9).

5. The hole group processing positioning fixture of the conical safety filter according to claim 3, characterized in that: An annular protrusion (7) extends from the upper end side of the cone positioning rod (1), and the protrusion (7) is located below the positioning cone boss (6). An annular air circulation groove (8) along the circumferential direction is formed between the protrusion (7) and the positioning cone boss (6), and the lower outlet of the air passage (10) is connected to the air circulation groove (8); when the locking nut (2) locks the conical safety filter (100) on the cone positioning rod (1), the air hole (11) faces the lower outlet of the air passage (10) located in the air circulation groove (8).

6. The positioning and clamping fixture for processing the group holes of the conical safety filter according to claim 5, characterized in that: The internal circulation gap (5), the air passage (10), the air circulation groove (8), the internal space (4), and the air hole (11) form an air flow channel.

7. The positioning and clamping fixture for processing the group holes of the conical safety filter according to claim 5, characterized in that: An axial partition wall (81) is formed in the air circulation groove (8), and the partition wall (81) divides the air circulation groove (8) into compartments (82), and the compartments (82) are connected to the air passage (10).

8. The positioning and clamping fixture for processing the group holes of the conical safety filter according to claim 1, characterized in that: The inner upper end of the locking nut (2) is provided with an internal thread, and the outer lower end of the conical safety filter (100) is provided with an external thread, and the internal thread and the external thread cooperate with each other to lock.

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