One-way needle valve body machining clamping jaw

Abstract

The utility model provides a one-way needle valve body machining clamping jaw. The one-way needle valve body machining clamping jaw is characterized in that a discharging hole is formed in the center of a chuck, chuck grooves are formed in one end of the chuck at equal intervals, one sides of the chuck grooves are communicated with the discharging hole, chuck teeth are arranged in the chuck grooves in a transition fit mode, and inverted-T-shaped moving grooves are formed in the centers of the tops of the chuck teeth; the latch mounting block is clamped in the inverted-T-shaped moving groove in a transition fit mode, and a connecting threaded hole is formed in the top of the latch mounting block. A pair of first clamping jaws is arranged, and the first clamping jaws are symmetrically arranged at the top of the clamping tooth mounting block; the second clamping jaw is arranged at the top of the latch mounting block on one side far away from the first clamping jaw; when the clamping device is used, the side wall, away from one side of the quadrilateral boss, of the one-way needle valve body abuts against the second clamping jaw, the first clamping jaw is lightly knocked, the left side and the right side of the quadrilateral boss on the side wall of the quadrilateral groove of the boss in the first clamping jaw achieve three-point limiting on a blank piece, the clamping force on the one-way needle valve body blank is increased, and the clamping efficiency is improved. Blank jumping is prevented during machining, and machining precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of machine tool processing, in particular to the technical field of one-way needle valve body clamping, and specifically relates to a one-way needle valve body processing clamping claw. Background Art

[0002] It is now necessary to open a through hole in the middle of the one-way needle valve body blank with a formed outer contour for installing the valve core. Because there is a quadrilateral boss on the side wall of the one-way needle valve body blank, conventional jaws can only clamp a small section of the boss near both ends when processing on a lathe. Because the clamping end is small, the clamping force is insufficient during drilling, and the blank vibrates slightly during processing, which will cause the processed inner hole wall to collide with the drill bit, causing the inner hole wall to be very rough and the inner hole processing accuracy to be unable to be guaranteed. The fixture needs to be improved. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a one-way needle valve body processing claw to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a one-way needle valve body processing claw, comprising:

[0005] A chuck 1, wherein a discharge hole 11 is provided in the middle of the chuck 1, and three chuck grooves 12 are provided at one end of the chuck 1 at an interval of 120°. One side of the chuck groove 12 is communicated with the discharge hole 11, and a chuck tooth 13 is provided in the chuck groove 12 for transition fit, and an inverted T-shaped moving groove 14 is provided in the middle of the top of the chuck tooth 13;

[0006] A latching tooth mounting block 2, wherein the latching tooth mounting block 2 is transitionally mounted in the inverted T-shaped moving groove 14, and a connecting threaded hole 21 is formed on the top of the latching tooth mounting block 2;

[0007] A first clamping claw 3, wherein the first clamping claw 3 is provided in a pair, and the pair of the first clamping claws 3 is symmetrically arranged on the top of the clamping tooth mounting block 2;

[0008] The second clamping jaw 4 is arranged on the top of the clamping tooth mounting block 2 away from the side of the first clamping jaw 3.

[0009] According to a preferred embodiment, the first clamping jaw 3 and the second clamping jaw 4 are trapezoidal in shape on one side close to the discharge hole 11 .

[0010] According to a preferred embodiment, the discharge hole 11 is arranged concentrically with the chuck 1 .

[0011] According to a preferred embodiment, triangular stop teeth 5 are arranged in a row on one side where the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 are close to the clamping tooth mounting block 2, and the triangular stop teeth 5 between the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 and the clamping tooth mounting block 2 are meshed with each other.

[0012] According to a preferred embodiment, a mounting clearance groove 6 is provided in the middle of the bottom of the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4.

[0013] According to a preferred embodiment, a mounting threaded hole 7 is opened in the middle of the top of the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4, a mounting screw 71 is passed through the middle of the mounting threaded hole 7, and the bottom of the mounting screw 71 passes through the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 and is clamped in the connecting threaded hole 21.

[0014] According to a preferred embodiment, a circular arc-shaped groove 8 is provided at the rear end of the valve body on one side of the first clamping jaw 3 and the second clamping jaw 4 close to the discharge hole 11 .

[0015] According to a preferred embodiment, the center of the arc-shaped groove 8 at the rear end of the valve body is coaxial with the center of the discharge hole 11 .

[0016] According to a preferred embodiment, a boss quadrilateral groove 31 is provided on one side of the first clamping jaw 3 close to the discharge hole 11 and away from the end of the chuck 1, and the boss quadrilateral groove 31 is communicated with the arc-shaped clamping groove 8 at the rear end of the valve body.

[0017] According to a preferred embodiment, a letter-numbered clearance groove 32 is provided in the middle of the side wall of the boss quadrilateral groove 31 away from the central axis of the discharge hole 11.

[0018] The utility model adopts a chuck, chuck teeth, a tooth mounting block, a first clamping jaw and a second clamping jaw. When the utility model is used, the tooth mounting block is driven to move the first clamping jaw and the second clamping jaw along an inverted T-shaped moving groove toward the central axis direction of a discharge hole, so that a side wall of a one-way needle valve body away from a quadrilateral boss is pressed against the second clamping jaw, and the first clamping jaw is lightly tapped so that a side wall of a quadrilateral groove of a boss in the first clamping jaw away from a central axis of the discharge hole is pressed against the left and right sides of the quadrilateral boss of a side wall of a one-way needle valve body blank, so that the processing hole position is coaxially arranged with the chuck, and three-point limiting of the one-way needle valve body blank is realized, thereby increasing the clamping length of the one-way needle valve body blank, improving the clamping force during processing, preventing the workpiece from jumping during hole processing, and improving the processing accuracy.

[0019] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 Shown is an enlarged schematic diagram of the three-dimensional structure of the chuck in the utility model;

[0022] Figure 3Shown is an enlarged schematic diagram of the three-dimensional structure of the chuck teeth and the chuck tooth mounting block in the utility model;

[0023] Figure 4 The figure shows an enlarged schematic diagram of the three-dimensional structure of the first clamping claw in the present invention;

[0024] Figure 5 It shows a schematic diagram of a first clamping jaw and a second clamping jaw clamping a blank of a one-way needle valve body in the present utility model;

[0025] Figure 6 The figure shows an enlarged schematic diagram of the three-dimensional structure of the one-way needle valve body blank in the utility model;

[0026] Description of symbols

[0027] 1. Chuck; 11. Discharge hole; 12. Chuck groove; 13. Chuck teeth; 14. Inverted T-shaped moving groove; 2. Chuck tooth mounting block; 21. Connecting threaded hole;

[0028] 3. No. 1 clamping jaw; 31. Boss quadrilateral groove; 32. Letter numbered clearance groove; 4. No. 2 clamping jaw; 5. Triangular stop tooth; 6. Installation clearance groove; 7. Installation threaded hole; 71. Installation screw; 8. Arc-shaped clamping groove at the tail end of the valve body; DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described 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.

[0030] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0031] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] The utility model provides a one-way needle valve body processing claw, which is used in the one-way needle valve body machine tool processing hole process. The utility model does not limit the specification type of the one-way needle valve body to be processed, but the chuck 1, chuck teeth 13, tooth mounting block 2, first claw 3 and second claw 4 structure are particularly suitable for clamping non-standard parts in the shape of a quadrilateral boss on the side wall of a cylindrical part such as a one-way needle valve body.

[0033] In general, the one-way needle valve body processing claws proposed in the present invention mainly include: a chuck 1, a chuck tooth 13, a tooth mounting block 2, a first claw 3 and a second claw 4, among which, it can be seen that Figure 1 , which shows the arrangement relationship of the chuck 1, the chuck teeth 13, the tooth mounting block 2, the first jaw 3 and the second jaw 4.

[0034] The one-way needle valve body processing claw proposed in the utility model is used as follows Figure 1 The driving tooth mounting block 2 shown in the figure makes the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 move along the inverted T-shaped moving groove 14 toward the central axis of the discharge hole 11, and the side wall of the one-way needle valve body away from the quadrilateral boss is placed on the No. 2 clamping jaw 4, and the No. 1 clamping jaw 3 is tapped lightly, so that the side wall of the quadrilateral groove 31 of the boss in the No. 1 clamping jaw 3 away from the central axis of the discharge hole 11 is close to the left and right sides of the quadrilateral boss of the side wall of the one-way needle valve body blank, and the processing hole position is set coaxially with the chuck 1, and the three-point limit of the one-way needle valve body blank is realized, which increases the clamping length of the one-way needle valve body blank, improves the clamping force during processing, prevents the workpiece from jumping during hole processing, and improves the processing accuracy.

[0035] A discharge hole 11 is provided in the center of the chuck 1, and the discharge hole 11 is concentrically arranged with the chuck 1. Three chuck grooves 12 are provided at equal intervals of 120° at one end of the chuck 1, and the three-point positioning clamping force is high. One side of the chuck groove 12 is communicated with the discharge hole 11, and a chuck tooth 13 is provided in the transition fit in the chuck groove 12. An inverted T-shaped moving groove 14 is provided in the center of the top of the chuck tooth 13. A tooth mounting block 2 is provided in the transition fit in the inverted T-shaped moving groove 14. A connecting threaded hole 21 is provided at the top of the tooth mounting block 2. A pair of No. 1 claws 3 are provided, and a The No. 1 clamping jaw 3 is symmetrically arranged on the top of the clamping tooth mounting block 2, and the No. 2 clamping jaw 4 is arranged on the top of the clamping tooth mounting block 2 on the side away from the No. 1 clamping jaw 3, wherein the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 are arranged on the side close to the clamping tooth mounting block 2. The triangular stop teeth 5 between the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 and the clamping tooth mounting block 2 are meshed with each other to prevent the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 from being offset on the clamping tooth mounting block 2 due to mechanical vibration during processing, and the clamped one-way needle valve body blank is clamped due to insufficient holding force. The first and second clamping jaws 3 and 4 are thrown out, causing safety hazards. The middle of the bottom of the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 is provided with an installation concession groove 6, and the middle of the top of the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 is provided with an installation threaded hole 7. The middle of the installation threaded hole 7 is penetrated by a mounting screw 71. The bottom of the mounting screw 71 passes through the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 and is clamped in the connecting threaded hole 21, so that the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 are connected to the clamping tooth mounting block 2 as a whole. Only by knocking the No. 1 clamping jaw 3 and the No. 2 clamping jaw 4 can the clamping tooth mounting block 2 move forward and backward along the inverted T-shaped moving groove 14. The first and second jaws 3 and 4 are provided with an arc-shaped groove 8 at the tail end of the valve body on one side near the discharge hole 11, and the boss quadrilateral groove 31 is communicated with the arc-shaped groove 8 at the tail end of the valve body, which is used to limit the quadrilateral boss on the side wall of the one-way needle valve body blank to increase the clamping length of the jaws, and the boss quadrilateral groove 31 is provided with a letter numbered make way groove 32 in the middle of the side wall away from the central axis of the discharge hole 11 to prevent the jaws from wearing out during clamping. The laser engraving machine engraves the model font on the side wall of the one-way needle valve body blank away from the quadrilateral boss.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A one-way needle valve body processing claw, characterized in that: include: A chuck (1), wherein a discharge hole (11) is provided in the middle of the chuck (1), three chuck grooves (12) are provided at equal intervals of 120° at one end of the chuck (1), one side of the chuck groove (12) is communicated with the discharge hole (11), a chuck tooth (13) is provided in the chuck groove (12) for transition fit, and an inverted T-shaped moving groove (14) is provided in the middle of the top of the chuck tooth (13); A latching tooth mounting block (2), the latching tooth mounting block (2) being transitionally mounted in the inverted T-shaped moving groove (14), and a connecting threaded hole (21) being formed on the top of the latching tooth mounting block (2); A first clamping claw (3), wherein the first clamping claw (3) is provided in a pair, and the pair of the first clamping claws (3) are symmetrically arranged on the top of the clamping tooth mounting block (2); The second clamping jaw (4) is arranged on the top of the clamping tooth mounting block (2) at a side away from the first clamping jaw (3).

2. The one-way needle valve body machining claw according to claim 1, characterized in that: Triangular stop teeth (5) are arranged in a row on the side where the first clamping claw (3) and the second clamping claw (4) are close to the clamping tooth mounting block (2), and the triangular stop teeth (5) between the first clamping claw (3) and the second clamping claw (4) and the clamping tooth mounting block (2) are meshed with each other.

3. The one-way needle valve body machining claw according to claim 2, characterized in that: The bottoms of the first clamping jaw (3) and the second clamping jaw (4) are provided with installation clearance grooves (6) in the middle.

4. The one-way needle valve body machining claw according to claim 3, characterized in that: A mounting threaded hole (7) is provided in the middle of the top of the No. 1 clamping jaw (3) and the No. 2 clamping jaw (4), a mounting screw (71) is passed through the middle of the mounting threaded hole (7), and the bottom of the mounting screw (71) passes through the No. 1 clamping jaw (3) and the No. 2 clamping jaw (4) and is clamped in the connecting threaded hole (21).

5. The one-way needle valve body machining claw according to claim 4, characterized in that: The first clamping jaw (3) and the second clamping jaw (4) are provided with a circular arc-shaped clamping groove (8) at the rear end of the valve body on one side close to the discharge hole (11).

6. The one-way needle valve body machining claw according to claim 5, characterized in that: A boss quadrilateral groove (31) is provided on one side of the first clamping claw (3) close to the discharge hole (11) and away from the end of the chuck (1), and the boss quadrilateral groove (31) is communicated with the arc-shaped clamping groove (8) at the rear end of the valve body.

7. The one-way needle valve body machining claw according to claim 6, characterized in that: A letter-numbered clearance groove (32) is provided in the middle of the side wall of the boss quadrilateral groove (31) away from the central axis of the discharge hole (11).

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