Machining clamp for shaft hole of valve body of exhaust brake valve

Abstract

The utility model discloses an exhaust brake valve body shaft hole machining clamp which comprises a fixing bottom plate, the upper surface of the fixing bottom plate is fixedly connected with a containing table, a fixing sliding groove is formed in the upper surface of the containing table, and a transverse clamping plate and a longitudinal clamping plate are arranged above the containing table. The bottom face of the transverse clamping plate and the bottom face of the longitudinal clamping plate are both fixedly connected with movable sliding blocks, each movable sliding block is slidably connected to the interior of the corresponding fixed sliding groove, and a positioning sliding groove is formed in the bottom face of the fixed bottom plate. Through the cooperation of the fixed bottom plate, the placing table, the fixed sliding groove, the movable sliding block, the transverse clamping plate and the longitudinal clamping plate, the four faces of the valve body can be conveniently positioned and clamped, then through the cooperation of the positioning sliding groove, the positioning sliding block and the positioning bolt, the positioning sliding block is stably positioned and clamped into the positioning sliding groove, and therefore the valve body can be conveniently positioned and clamped. The valve body of the exhaust brake valve is stably clamped, and the function of positioning and fixing the valve body of the exhaust brake valve exceeding the range is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing fixtures, in particular to a processing fixture for a shaft hole of an exhaust brake valve body. Background Art

[0002] The exhaust brake valve is an auxiliary brake and a necessary supplement to the vehicle's service brakes. The exhaust brake valve uses the engine as an air compressor to generate braking torque, thereby decelerating the vehicle. When machining the shaft hole of the exhaust brake valve body, in order to ensure the machining accuracy of the shaft hole and reduce defective products, the exhaust brake valve body needs to be fixed by a clamp.

[0003] The utility model with the existing authorization announcement number CN220050929U discloses an exhaust brake valve body shaft hole processing fixture, including a base; a positioning shaft is connected to the top of the base, a shaft mounting plate is installed on one side of the base, a bolt D is installed inside the shaft mounting plate, and the bolt D is connected to the positioning shaft; a bolt E is connected to one end of the positioning shaft, and a quick-change clamp is connected to the outside of the bolt E; a bolt A and a bolt B are connected to the top of the base; a valve body, the valve body is sleeved on the outside of the positioning shaft, and the valve body is respectively in contact with the base, the quick-change clamp, the bolt A and the bolt B.

[0004] Although the above-mentioned technical scheme uses the quick-change clamp to limit and fix the valve body, making the valve body fixation simpler and faster, and the valve body is adjusted to a vertical state by bolt A, and the bottom of the valve body is clamped and fixed by bolt B to ensure the machining accuracy of the internal axial hole of the valve body, when the exhaust brake valve body axial hole machining fixture of the above-mentioned technical scheme is used, it is necessary to machine the axial hole of the exhaust brake valve body to position the exhaust brake valve body, and it is necessary to position the four horizontal planes of the exhaust brake valve body, and the horizontal positioning structure of the fixture cannot adjust the distance between the two clamping parts, so that the size range of the exhaust brake valve body clamped by the fixture is determined, so that the clamp cannot position and fix the exhaust brake valve body that exceeds the size range, thereby reducing the applicability of the fixture. Therefore, technical personnel in this field provide an exhaust brake valve body axial hole machining fixture to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0005] In view of this, it is necessary to provide an exhaust brake valve body shaft hole processing fixture to solve the problem that the exhaust brake valve body exceeding the size range cannot be positioned and fixed.

[0006] According to one aspect of the utility model, there is provided an exhaust brake valve body shaft hole processing fixture, including a fixed base plate, the upper surface of the fixed base plate is fixedly connected to a placing table, the upper surface of the placing table is provided with a fixed slide groove, a transverse clamping plate and a longitudinal clamping plate are respectively arranged above the placing table, the bottom surface of the transverse clamping plate and the bottom surface of the longitudinal clamping plate are fixedly connected to a movable slider, each of the movable sliders is slidably connected to the inside of the fixed slide groove, the bottom surface of the fixed base plate is provided with a positioning slide groove, the positioning slide groove is communicated with the fixed slide groove, the interior of the positioning slide groove is slidably connected to two positioning sliders, the interior of each positioning slider is threadedly connected to a positioning bolt, and the top end of each positioning bolt passes through the positioning slider and is threadedly connected to the internal thread of the movable slider.

[0007] According to some embodiments, two groups of threaded holes are opened on the upper surface of the fixed base plate, and a processing table is arranged below the fixed base plate.

[0008] According to some embodiments, the interior of each group of threaded holes is threadedly connected with a mounting bolt, and the bottom end of each group of mounting bolts passes through the threaded holes and is threadedly connected to the interior of the processing table.

[0009] According to some embodiments, the left side surface and the front side of the placing table are both fixedly connected with mounting plates, and the side surfaces of the two mounting plates that are away from each other are both fixedly connected with scales.

[0010] According to some embodiments, a transverse positioning plate is fixedly connected to the upper surface of the placement table, and a longitudinal positioning plate is fixedly connected to the upper surface of the placement table.

[0011] According to some embodiments, two reinforcement rods are fixedly connected to the right side of the transverse positioning plate and the back side of the longitudinal positioning plate, and the bottom end of each group of the reinforcement rods is fixedly connected to the upper surface of the fixed bottom plate.

[0012] According to some embodiments, the front side of the transverse clamping plate, the back side of the transverse clamping plate and both side surfaces of the longitudinal clamping plate are provided with extension slide grooves, and the interior of each group of the extension slide grooves is slidably connected with an extension baffle.

[0013] According to some embodiments, a buffer ring is sleeved on the outer surface of each positioning bolt, and the upper surface of each buffer ring is in contact with the bottom surface of the positioning slider.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By providing a fixed bottom plate, a placement table, a fixed slide groove, a movable slider, a transverse clamping plate and a longitudinal clamping plate, the placement table fixed on the fixed bottom plate can be used to place the exhaust brake valve body that needs hole processing on its upper surface, and make the exhaust brake valve body contact with the two fixed side baffles, and the fixed slide groove opened on the placement table can be used to make the movable slider fixed on the bottom surface of the transverse clamping plate and the longitudinal clamping plate slide inside, so that the transverse clamping plate and the longitudinal clamping plate can be conveniently contacted with the other two side surfaces of the exhaust brake valve body, thereby facilitating the exhaust brake The four surfaces of the valve body are positioned and clamped, and then the positioning groove, positioning slider and positioning bolt are cooperated. When the transverse clamping plate and the longitudinal clamping plate are in contact with the other two side surfaces of the exhaust brake valve body, the positioning slider can be firmly positioned and clamped in the positioning groove by twisting the positioning bolt, so that the movable slider is firmly positioned and clamped in the fixed groove, and then the transverse clamping plate and the longitudinal clamping plate can be used to stably clamp the exhaust brake valve body, so as to position and fix the exhaust brake valve body exceeding this range, thereby improving the applicability of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a fixed bottom plate of a fixture for machining the shaft hole of an exhaust brake valve body provided by the utility model;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of a placement table for a fixture for machining the shaft hole of an exhaust brake valve body provided by the utility model;

[0019] Figure 3 A bottom view stereoscopic structural diagram of a fixed bottom plate of an exhaust brake valve body shaft hole machining fixture provided by the utility model;

[0020] Figure 4 The utility model provides a bottom view stereoscopic structural diagram of a positioning slide block of a fixture for machining an axial hole of an exhaust brake valve body.

[0021] In the figure: 1. Processing table; 2. Fixed base plate; 3. Mounting bolts; 4. Threaded holes; 5. Placement table; 6. Mounting plate; 7. Scale; 8. Horizontal positioning plate; 9. Longitudinal positioning plate; 10. Horizontal clamping plate; 11. Longitudinal clamping plate; 12. Fixed slide; 13. Extended baffle; 14. Reinforcement rod; 15. Moving slider; 16. Extended slide; 17. Positioning slide; 18. Positioning slider; 19. Positioning bolts; 20. Buffer ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] See also Figures 1 to 4 The utility model provides an exhaust brake valve body shaft hole processing fixture, including a fixed base plate 2, the upper surface of the fixed base plate 2 is fixedly connected with a placing table 5, the upper surface of the placing table 5 is provided with a fixed slide groove 12, and a transverse clamping plate 10 and a longitudinal clamping plate 11 are respectively arranged above the placing table 5, the bottom surface of the transverse clamping plate 10 and the bottom surface of the longitudinal clamping plate 11 are fixedly connected with a movable slider 15, each movable slider 15 is slidably connected to the inside of the fixed slide groove 12, and a positioning slide groove 17 is provided on the bottom surface of the fixed base plate 2, the positioning slide groove 17 is connected with the fixed slide groove 12, and two positioning slides 18 are slidably connected to the inside of the positioning slide groove 17, and the interior of each positioning slide block 18 is threadedly connected with a positioning bolt 19, and the top end of each positioning bolt 19 passes through the positioning slide block 18 and is threadedly connected with the inner part of the movable slide block 15.

[0024] When it is necessary to use the clamp to process the axial hole of the exhaust brake valve body, the fixed base plate 2 of the clamp is first firmly fixed on the processing structure, and a transverse clamping plate 10 and a longitudinal clamping plate 11 are set on the placement table 5. The bottom surfaces of the transverse clamping plate 10 and the longitudinal clamping plate 11 are fixed with movable sliders 15, which can facilitate the movable sliders 15 of the transverse clamping plate 10 and the longitudinal clamping plate 11 to slide in the fixed slide grooves 12 opened on the placement table 5, and clamping plates corresponding to the transverse clamping plate 10 and the longitudinal clamping plate 11 are fixed on the placement table 5 to make the two side surfaces of the exhaust brake valve body placed on the placement table 5 contact with the clamping plates, and the positioning bolts 19 are used to position the positioning sliders 18 under the transverse clamping plate 10 and the longitudinal clamping plate 11, so that the exhaust brake valve body on the placement table 5 can be stably clamped and positioned to accurately process the axial hole of the exhaust brake valve body.

[0025] Furthermore, two groups of threaded holes 4 are opened on the upper surface of the fixed base plate 2, and a processing table 1 is arranged below the fixed base plate 2, so that the fixed base plate 2 is placed on the processing table 1 with the clamp, and holes corresponding to the threaded holes 4 are drilled on the processing table 1 manually, so that the clamp can be fixed on the processing table 1.

[0026] Furthermore, each set of threaded holes 4 is threadedly connected to a mounting bolt 3, and the bottom end of each set of mounting bolts 3 passes through the threaded holes 4 and is threadedly connected to the internal threads of the processing table 1. The mounting bolts 3 pass through the threaded holes 4 and are threadedly connected to the drilled holes, thereby facilitating the fixed installation of the clamp.

[0027] Furthermore, the left side surface of the placing table 5 and the front side of the placing table 5 are fixedly connected with mounting plates 6, and the sides of the two mounting plates 6 that are away from each other are fixedly connected with scales 7. The mounting plates 6 fixed on the two side surfaces of the placing table 5 are used to install the scales 7 on the two side surfaces of the placing table 5, so that the moving distances of the horizontal clamping plate 10 and the longitudinal clamping plate 11 can be compared and measured through the comparison scale.

[0028] Furthermore, a transverse positioning plate 8 is fixedly connected to the upper surface of the placing table 5, and a longitudinal positioning plate 9 is fixedly connected to the upper surface of the placing table 5. The transverse positioning plate 8 and the longitudinal positioning plate 9 fixed on the placing table 5 are utilized to make the two side surfaces of the exhaust brake valve body contact with the transverse positioning plate 8 and the longitudinal positioning plate 9, thereby being able to limit the two side surfaces of the exhaust brake valve body.

[0029] Furthermore, two reinforcement rods 14 are fixedly connected to the right side of the transverse positioning plate 8 and the back side of the longitudinal positioning plate 9, and the bottom end of each group of reinforcement rods 14 is fixedly connected to the upper surface of the fixed bottom plate 2. The reinforcement rods 14 can be used to improve the fixing stability of the transverse positioning plate 8 and the longitudinal positioning plate 9, thereby improving the clamping stability of the exhaust brake valve body.

[0030] Furthermore, extension grooves 16 are provided on the front side of the transverse clamping plate 10, the back side of the transverse clamping plate 10 and the two side surfaces of the longitudinal clamping plate 11, and an extension baffle 13 is slidably connected inside each group of extension grooves 16. The extension grooves 16 provided on both sides of the transverse clamping plate 10 and the longitudinal clamping plate 11 are utilized to make the extension baffle 13 slide inside them, so that the transverse clamping plate 10 and the longitudinal clamping plate 11 can be extended, thereby increasing the contact area with the other two side surfaces of the exhaust brake valve body, and further improving the clamping stability of the exhaust brake valve body.

[0031] Furthermore, a buffer ring 20 is sleeved on the outer surface of each positioning bolt 19, and the upper surface of each buffer ring 20 contacts the bottom surface of the positioning slider 18. The buffer ring 20 is utilized to increase the force area applied by the positioning bolt 19 to the positioning slider 18, thereby reducing the impact force received by the positioning bolt 19 and extending the service life of the positioning bolt 19.

[0032] Working principle: When the fixture is used to clamp the exhaust brake valve body for shaft hole processing, the fixed base plate 2 is first placed on the processing table 1 manually, and a hole corresponding to the threaded hole 4 is drilled on the upper surface of the processing table 1, and the mounting bolt 3 is passed through the threaded hole 4 and threadedly connected with the drilled hole, so that the fixture can be firmly fixed on the upper surface of the processing table 1, and then the exhaust brake valve body that needs to be processed with the shaft hole is manually placed on the upper surface of the placement table 5, and the two side surfaces of the exhaust brake valve body are respectively contacted with the inner sides of the horizontal positioning plate 8 and the longitudinal positioning plate 9 fixed on the placement table 5 to limit the two side surfaces of the exhaust brake valve body, and then the horizontal clamping plate 10 and the longitudinal clamping plate 11 are manually moved to make the displacement The movable slider 15 slides in the fixed slide groove 12, and the positioning slider 18 slides in the positioning slide groove 17, so that the transverse clamping plate 10 and the longitudinal clamping plate 11 are both close to the exhaust brake valve body until the transverse clamping plate 10 and the longitudinal clamping plate 11 are in contact with the other two side surfaces of the exhaust brake valve body. The positioning slider 18 sliding in the positioning slide groove 17 is positioned by manually twisting the positioning bolt 19 threadedly connected to the movable slider 15 and the positioning slider 18, so that the transverse clamping plate 10 and the longitudinal clamping plate 11 can be positioned, and then the exhaust brake valve body can be clamped by the limit clamping of the transverse positioning plate 8, the longitudinal positioning plate 9, the transverse clamping plate 10 and the longitudinal clamping plate 11, and the axial hole of the exhaust brake valve body can be stably processed.

[0033] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

Claims

1. A fixture for machining the shaft hole of an exhaust brake valve body, characterized in that: The invention comprises a fixed base plate (2), the upper surface of which is fixedly connected with a placing platform (5), the upper surface of which is provided with a fixed slide groove (12), a transverse clamping plate (10) and a longitudinal clamping plate (11) are respectively arranged above the placing platform (5), the bottom surface of the transverse clamping plate (10) and the bottom surface of the longitudinal clamping plate (11) are fixedly connected with a movable slider (15), each of which is slidably connected to the inside of the fixed slide groove (12), a positioning slide groove (17) is provided on the bottom surface of the fixed base plate (2), the positioning slide groove (17) is connected with the fixed slide groove (12), two positioning slides (18) are slidably connected inside the positioning slide groove (17), the inside of each positioning slide groove (18) is threadedly connected with a positioning bolt (19), the top end of each positioning bolt (19) passes through the positioning slide groove (18) and is threadedly connected with the inside of the movable slide groove (15).

2. The exhaust brake valve body shaft hole machining fixture according to claim 1, characterized in that: Two groups of threaded holes (4) are provided on the upper surface of the fixed base plate (2), and a processing table (1) is provided below the fixed base plate (2).

3. The exhaust brake valve body shaft hole machining fixture according to claim 2, characterized in that: The interior of each group of threaded holes (4) is threadedly connected with a mounting bolt (3), and the bottom end of each group of mounting bolts (3) passes through the threaded holes (4) and is threadedly connected with the interior of the processing table (1).

4. The exhaust brake valve body shaft hole machining fixture according to claim 1, characterized in that: The left side surface of the placing platform (5) and the front surface of the placing platform (5) are both fixedly connected with mounting plates (6), and the side surfaces of the two mounting plates (6) that are away from each other are both fixedly connected with scales (7).

5. The exhaust brake valve body shaft hole machining fixture according to claim 1, characterized in that: A transverse positioning plate (8) is fixedly connected to the upper surface of the placement platform (5), and a longitudinal positioning plate (9) is fixedly connected to the upper surface of the placement platform (5).

6. The exhaust brake valve body shaft hole machining fixture according to claim 5, characterized in that: Two reinforcing rods (14) are fixedly connected to the right side of the transverse positioning plate (8) and the back side of the longitudinal positioning plate (9), and the bottom end of each group of reinforcing rods (14) is fixedly connected to the upper surface of the fixed bottom plate (2).

7. The exhaust brake valve body shaft hole machining fixture according to claim 1, characterized in that: The front side of the transverse clamping plate (10), the back side of the transverse clamping plate (10) and the two side surfaces of the longitudinal clamping plate (11) are all provided with extension slide grooves (16), and the interior of each group of the extension slide grooves (16) is slidably connected with an extension baffle (13).

8. The exhaust brake valve body shaft hole machining fixture according to claim 1, characterized in that: The outer surface of each positioning bolt (19) is sleeved with a buffer ring (20), and the upper surface of each buffer ring (20) is in contact with the bottom surface of the positioning slide block (18).

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