Blow-down valve machining tool

Abstract

The utility model relates to the technical field of tool equipment, in particular to a blow-down valve machining tool, which comprises a clamping base, a clamping block, a clamping block, a positioning block and a clamping block, the clamping base is of a horizontally-arranged disc structure and is provided with a plurality of longitudinally-penetrating fixing holes, and a positioning circular truncated cone is arranged in the center of the top of the clamping base; the connecting rods are distributed on the periphery of the positioning circular truncated cone, and the top ends of the connecting rods are in threaded fit with nuts. According to the blow-down valve machining tool, the positioning circular truncated cone is matched with an inner hole formed after a workpiece is turned around, the coaxiality of the workpiece after the workpiece is turned around is guaranteed, and machining deviation caused by repeated positioning errors is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling equipment, and particularly relates to a processing tooling for a sewage valve. Background Art

[0002] During the machining process of sewage valve parts, due to their special structural design, there are often difficulties in secondary clamping and positioning. For example: when one end of the part is machined and then the other end needs to be machined after turning the workpiece around, due to the high surface finish or weak structure of the machined surface, it is easy to slip or deform during clamping, affecting the machining accuracy. Traditional fixtures such as three-jaw chucks or parallel clamps are difficult to directly clamp, which can easily lead to insufficient clamping stability or damage to the workpiece. Therefore, designing a special tooling is a key technical link to improve the machining consistency of sewage valve parts. Content of the Utility Model

[0003] The utility model provides a processing tooling for a sewage valve. By matching the positioning round table with the inner hole after the workpiece is turned around, the coaxiality after the workpiece is turned around is ensured, and the machining deviation caused by repeated positioning errors is avoided.

[0004] In order to achieve the above object, the utility model provides the following technical solution: A processing tooling for a sewage valve, which includes: a clamping base, the clamping base is a horizontally arranged disc structure, and the clamping base is provided with a plurality of longitudinally penetrating fixing holes, and a positioning round table is arranged at the center of the top of the clamping base; a connecting rod, the connecting rods are distributed around the positioning round table, and nuts are threadedly matched at the top ends.

[0005] Preferably, a T-shaped slideway is arranged on the top of the clamping base around the positioning round table; a T-shaped head is arranged at the bottom end of the connecting rod, which is matched with the T-shaped slideway.

[0006] Preferably, an upper step is arranged on the outer edge of the top of the clamping base, and side grooves are arranged circumferentially on the outer side wall of the upper step; a circular ring is also included, the circular ring is sleeved on the outside of the upper step and is fixedly connected with the clamping base through a plurality of longitudinally penetrating bolts, and a lower step is arranged circumferentially on the inner edge of the bottom of the circular ring; the lower step and the side grooves form the T-shaped slideway.

[0007] Preferably, the middle part of the connecting rod is provided with an external hexagonal cross-section.

[0008] Preferably, cutting surfaces are respectively arranged on both sides of the T-shaped head, and the inner side walls of the T-shaped slideway are matched through the cutting surfaces on both sides.

[0009] The beneficial effects of the present invention are as follows: the design of the drain valve processing tooling is aimed at the positioning difficulties and workpiece damage problems in the secondary clamping, and high stability and protection are achieved through structural optimization. The positioning frustum cooperates with the inner hole of the workpiece after the turn, ensuring the coaxiality of the workpiece after the turn, and avoiding processing deviations caused by repeated positioning errors. The tooling is fixed to the machine tool workbench by bolts, and the connecting rods are distributed around the frustum. The nuts are used to press the non-critical areas of the workpiece, such as the flange end face, so as to disperse the clamping force and avoid local deformation. The nut thread cooperates to provide adjustable pressing force to adapt to workpieces of different sizes, avoid the three-jaw chuck directly squeezing the processed surface, and prevent the workpiece from being scratched or deformed. Since the workpiece is placed on the positioning frustum, it only needs to tighten the surrounding nuts to complete the fixation, reducing the adjustment time of traditional fixtures and being suitable for batch processing. The positioning frustum and the fixing holes ensure the coaxiality of the workpiece and the machine tool spindle, and the position accuracy of the processed surfaces at both ends after the secondary clamping is significantly improved. The T-shaped head at the bottom of the connecting rod slides within the T-shaped slideway, allowing for free circumferential adjustment to accommodate flanges of various workpieces. This optimizes the connecting rod's flexibility, stability, maintainability, and clamping adaptability. The T-shaped head, with its two side cuts, mates with the inner wall of the T-shaped slideway, effectively preventing the connecting rod from rotating or shifting slightly when subjected to force. This ensures that the connecting rod maintains radial alignment after sliding adjustment or locking, preventing uneven clamping force due to circumferential loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the application state of the utility model;

[0013] Figure 3 It is a partial structural sectional view of the utility model.

[0014] In the figure: 1. Clamping base; 2. Fixing hole; 3. Positioning cone; 4. Connecting rod; 5. Nut; 6. T-type slide; 7. T-type head; 8. Upper step; 9. Side slot; 10. Ring; 11. Lower step; 12. External hexagonal section; 14. Workpiece. DETAILED DESCRIPTION

[0015] The technical solution of the present utility model will be clearly and completely described below in conjunction with the drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] According to Figure 1 、 Figure 2 、 Figure 3 As shown, a processing tooling for a sewage discharge valve includes: a clamping base 1, the clamping base 1 is a horizontally arranged disc structure, and the clamping base 1 is provided with a plurality of longitudinally penetrating fixing holes 2, and a positioning round table 3 is provided at the center of the top of the clamping base 1; a connecting rod 4, the connecting rod 4 is distributed around the positioning round table 3, and the top end is threadedly matched with a nut 5.

[0017] Through the above settings, the design of this processing tooling for the sewage discharge valve aims at the positioning difficulty and workpiece 14 damage problems in secondary clamping, and realizes high stability and protection through structural optimization. Its positioning round table 3 is matched with the inner hole after the workpiece 14 is turned around, ensuring the coaxiality of the workpiece 14 after turning around, and avoiding machining deviation caused by repeated positioning error. The tooling is fixed on the machine tool workbench by bolts. The connecting rod 4 is distributed around the round table, and the nut 5 is used to press the non-critical area of the workpiece 14, such as on the flange end face, so as to disperse the clamping force and avoid local deformation. The adjustable pressing force is also provided through the threaded fit of the nut 5 to adapt to workpieces 14 of different sizes, avoiding direct extrusion of the machined surface by the three-jaw chuck and preventing the workpiece 14 from being scratched or deformed. Since only the surrounding nuts 5 need to be tightened after the workpiece 14 is placed on the positioning round table 3 to complete the fixation, the adjustment time of the traditional fixture is reduced, which is suitable for batch processing. The positioning round table 3 and the fixing holes 2 ensure the coaxiality of the workpiece 14 and the machine tool spindle, and the position accuracy of the two end machining surfaces is significantly improved after secondary clamping.

[0018] A T-shaped slideway 6 is provided on the top of the clamping base 1 around the positioning round table 3; a T-shaped head 7 matched with the T-shaped slideway 6 is provided at the bottom end of the connecting rod 4. An upper step 8 is provided on the outer edge of the top of the clamping base 1, and a side slot 9 is provided on the outer side wall of the upper step 8 in a circumferential direction; a ring 10 is further included, the ring 10 is sleeved on the outside of the upper step 8 and is fixedly connected with the clamping base 1 through a plurality of longitudinally penetrating bolts, and a lower step 11 is provided on the inner edge of the bottom of the ring 10 in a circumferential direction; the lower step 11 and the side slot 9 form the T-shaped slideway 6.

[0019] Through this design, the T-shaped head 7 at the bottom of the connecting rod 4 can slide in the T-shaped slideway 6 to freely adjust the circumferential position, so as to adapt to the flange plates of different workpieces 14, thus optimizing the flexibility, stability, maintainability and clamping adaptability of the connecting rod 4.

[0020] The middle part of the connecting rod 4 is provided with an external hexagonal cross-section 12, and a standard open-end wrench or socket wrench can be used on the external hexagonal cross-section 12 to circumferentially restrain the connecting rod 4, ensuring that the rod body does not rotate along with it when the nut 5 is tightened, improving the assembly accuracy, and avoiding the surface damage of the connecting rod 4 caused by using a pipe wrench or friction clamping for a traditional round rod.

[0021] Both sides of the T-shaped head 7 are respectively provided with cut surfaces, and the cut surfaces on both sides are matched with the inner side walls of the T-shaped slideway 6. Therefore, it can effectively prevent the connecting rod 4 from undergoing minute rotation or deviation when stressed, ensuring that the connecting rod 4 always maintains radial alignment after sliding adjustment or locking, and avoiding uneven clamping force caused by circumferential loosening.

[0022] As mentioned above, the above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, and all of them should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A processing tooling for a sewage discharge valve, characterized in that, Comprising: A clamping base (1), the clamping base (1) being a horizontally arranged disc structure, and the clamping base (1) being provided with a plurality of longitudinally penetrating fixing holes (2), and a positioning round platform (3) being provided at the center of the top of the clamping base (1); Connecting rods (4), the connecting rods (4) being distributed around the positioning round platform (3), and nuts (5) being threadedly engaged with the tops thereof.

2. The processing tooling for the sewage discharge valve according to claim 1, characterized in that: A T-shaped slideway (6) is provided on the top of the clamping base (1) around the positioning round platform (3); a T-shaped head (7) cooperating with the T-shaped slideway (6) is provided at the bottom end of the connecting rod (4).

3. The processing tooling for the sewage discharge valve according to claim 2, characterized in that: An upper step (8) is provided on the outer edge of the top of the clamping base (1), and side grooves (9) are circumferentially arranged on the outer side wall of the upper step (8); further included is a ring (10), the ring (10) being sleeved on the outside of the upper step (8) and fixedly connected to the clamping base (1) by a plurality of longitudinally penetrating bolts, and a lower step (11) being circumferentially arranged on the inner edge of the bottom of the ring (10); the lower step (11) and the side grooves (9) form the T-shaped slideway (6).

4. The processing tooling for the sewage discharge valve according to claim 1, characterized in that: An external hexagonal cross-section (12) is provided in the middle of the connecting rod (4).

5. The processing tooling for the sewage discharge valve according to claim 3, characterized in that: Cut surfaces are respectively provided on both sides of the T-shaped head (7), and the inner side walls of the T-shaped slideway (6) are cooperated through the cut surfaces on both sides.

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