Clamping tool for water cap machining

Abstract

The utility model discloses a clamping tool for processing a water cap, which relates to the technical field of petroleum drilling and comprises a U-shaped fixing seat, a positioning hole is arranged on one side of the fixing seat, and a movable clamping block capable of being close to or far away from the center of the fixing seat is mounted on the other side of the fixing seat. According to the utility model, the water cap can be quickly and accurately clamped after the first water hole is finished, so that the processing efficiency of the water cap is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum drilling, in particular to a clamping tool for water cap processing. Background Art

[0002] The screw drill is a type of volumetric downhole power drill that uses drilling fluid as a power source and converts liquid pressure energy into mechanical energy. The screw drill consists of five major parts: a drive shaft assembly, a motor assembly, a universal shaft assembly, an anti-drop assembly, and a bypass valve assembly. The mud output by the mud pump flows through the bypass valve into the motor, forming a certain pressure difference at the inlet and outlet of the motor to drive the motor's rotor to rotate, and transmits the torque and speed to the drill bit through the universal shaft assembly and the drive shaft assembly. Among them, one end of the water cap is sleeved on the end of the drive shaft assembly, and the other end is against the end of the universal shaft assembly. When the screw drill is running, the drive shaft assembly transmits the rotational power of the motor to the drill bit, while bearing the axial and radial loads generated by the drilling pressure.

[0003] At present, water holes need to be opened on the circumferential surface of the water cap during the processing. In order to ensure the accuracy of the water hole opening, the water hole is generally clamped and fixed on the machine tool with a fixture, and then the water hole is drilled with a drill. Since there are generally multiple water holes on the water cap, and the angle between two adjacent water holes is 90° or 120°, when the first water hole is processed, the fixture loosens the clamp on the water cap, rotates the water cap, and clamps the water cap again; however, the existing fixture does not have a related structure for positioning the water cap, so after the previous water hole is processed, the water cap needs to spend a lot of time to correct its angle during the second clamping, which makes the entire processing process time-consuming and labor-intensive, and the processing efficiency is low. Utility Model Content

[0004] The utility model aims to provide a clamping tool for processing a water cap, which enables the water cap to be clamped quickly and accurately after the first water hole is completed, thereby greatly improving the processing efficiency of the water cap.

[0005] To achieve the purpose of the utility model, the technical solution adopted is: a clamping tool for water cap processing, including a U-shaped fixing seat, a positioning hole is opened on one side of the fixing seat, and a movable clamping block that can be close to or away from the center of the fixing seat is installed on the other side of the fixing seat.

[0006] Furthermore, the shape of the side wall of the fixing seat where the movable clamping block is not installed matches the outer wall of the water cap.

[0007] Furthermore, the shape of the positioning hole is the same as the shape of the water eye.

[0008] Furthermore, the angle between the positioning hole and the central axis of the clamped water cap is 90° or / and 120°.

[0009] Furthermore, there are two movable clamping blocks, and the two movable clamping blocks are arranged at intervals along the length direction of the fixing seat.

[0010] Furthermore, a screw rod connected to the movable clamping block is also installed on the fixing seat, and the screw rod is threadably matched with the fixing seat.

[0011] Furthermore, a handle is installed on the outer end of the screw.

[0012] Furthermore, the inner wall of the fixed seat and the clamping surface of the movable clamping block are V-shaped.

[0013] Furthermore, the middle of the clamping surface of the movable clamping block is in an arc-shaped transition.

[0014] Furthermore, the inner wall of the fixing seat is provided with a groove for accommodating the movable clamping block.

[0015] The beneficial effects of the utility model are:

[0016] In the utility model, a positioning hole is opened on one side of a fixing seat, so that after the first water hole of the water cap is processed, the water cap is rotated so that the water hole on the water cap corresponds to the positioning hole, and then a positioning rod is inserted into the water hole and the positioning hole to realize the positioning of the water cap, ensuring that after the water cap is rotated, the position of the water hole to be processed on the water cap is accurately positioned with the drill bit on the machine tool, and finally, the movable clamping block is moved, and the movable clamping block cooperates with the inner wall of the fixing seat to clamp and fix the water cap.

[0017] The utility model can realize accurate and fast clamping after the first water hole on the water cap is processed, so that when processing the remaining water holes of the water cap, there is no need to calibrate the drill bit and the position of the water holes to be processed, which not only makes the processing of the water cap more convenient, but also greatly improves the processing efficiency of the water cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present invention and are used to explain the principles of the present invention together with the description. These drawings are included to provide a further understanding of the present invention, and the drawings are included in and constitute a part of this specification.

[0019] Figure 1 This is a schematic diagram of the structure of the clamping tooling for water cap processing provided by the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the clamping tooling for water cap processing provided by the utility model Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the utility model for clamping a water cap.

[0022] Markings and corresponding parts names in the attached drawings:

[0023] 1. Fixed seat, 2. Receiving groove, 3. Fixed clamping block, 4. Groove, 5. Movable clamping block, 6. Screw, 7. Handle, 8. Positioning hole, 9. Positioning rod. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and implementations. It is to be understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a clamping tool for processing a water cap, including a U-shaped fixing seat 1, that is, the fixing seat 1 has a through groove for accommodating the water cap to be processed; a positioning hole 8 is opened on one side of the fixing seat 1, and the positioning hole 8 is a through hole, that is, one end of the positioning hole 8 passes through the outer wall of the fixing seat 1, and the other end of the positioning hole 8 passes through the inner wall of the fixing seat 1; a movable clamping block 5 is installed on the other side of the fixing seat 1, and the movable clamping block 5 can horizontally approach the central axis of the fixing seat 1, and the movable clamping block 5 can also horizontally move away from the central axis of the fixing seat 1. When the movable clamping block 5 approaches the central axis of the fixing seat 1, the movable clamping block 5 cooperates with the inner wall of the fixing seat 1 to clamp and fix the water cap to be processed; when the movable clamping block 5 moves away from the central axis of the fixing seat 1, the movable clamping block 5 releases the clamping of the water cap to be processed.

[0027] Since the outer wall of the water cap is not a straight cylinder, specifically, one end of the water cap has a large diameter, the other end of the water cap has a small diameter, and the middle section of the water cap also has a flange. Therefore, in order to ensure that the two ends of the water cap remain stable after clamping, the side wall of the fixed seat 1 where the movable clamping block 5 is not installed can be set to a step surface that matches the outer wall of the water cap; at the same time, when the side wall of the fixed seat 1 where the movable clamping block 5 is not installed can only meet the requirements of matching the large diameter end and the middle section of the water cap, a fixed clamping block 3 can also be set on the side wall of the fixed seat 1 where the movable clamping block 5 is not installed to raise the side wall of the fixed seat 1, which not only ensures that the water cap will not tilt when clamped, but also ensures that the clamping force on the water cap is more evenly distributed when clamped, thereby avoiding damage to the water cap. When a fixed clamping block 3 is provided on the fixed seat 1, a receiving groove 2 for installing the fixed clamping block 3 is opened on the fixed seat 1, and the fixed seat 1 is fixedly installed in the receiving groove 2 by screws; in addition, when the fixed clamping block 3 is provided on the fixed seat 1, the clamping surface of the fixed clamping block 3 is also V-shaped, and the middle of the clamping surface on the fixed clamping block 3 also has an arc-shaped transition.

[0028] The shape of the positioning hole 8 is the same as that of the water eye. For example, when the water eye is circular, the positioning hole 8 is circular. Of course, the shape of the water eye may also be other shapes.

[0029] Since the number of water holes on the water cap can be 3, 4, etc., in order to meet the processing of water caps with different numbers of water holes, the number of positioning holes 8 can be 1, 2, etc. Specifically, when the utility model is only used to process a water cap with 3 water holes, a vertical plane is set with the central axis of the clamped water cap, and the clockwise angle between the central axis of the positioning hole 8 and the vertical plane is 120°; when the utility model is only used to process a water cap with 4 water holes, a vertical plane is set with the central axis of the clamped water cap, and the clockwise angle between the central axis of the positioning hole 8 and the vertical plane is 90°; when the utility model is used to process water caps with 3 and 4 water holes at the same time, there are two positioning holes 8 on the fixing seat 1, and a vertical plane is set with the central axis of the clamped water cap, and the clockwise angle between the central axis of one positioning hole 8 and the vertical plane is 90°, and the clockwise angle between the central axis of the other positioning hole 8 and the vertical plane is 120°.

[0030] In order to make the water cap more stable after being clamped, the utility model can have two movable clamping blocks 5, and the two movable clamping blocks 5 are respectively arranged at the two ends of the fixed seat 1, so that when the water cap is clamped, the two movable clamping blocks 5 can cooperate to clamp the two ends of the water cap at the same time, making the water cap more stable after clamping, and avoiding the water cap from tilting on the fixed seat 1 when processing the water eye.

[0031] In order to make the water cap more stable after being clamped, the clamping surface of the movable clamping block 5 is V-shaped, so that when the water cap is clamped, the water cap is clamped by the movable clamping block 5 at two points, so that the clamping effect of the water cap is better.

[0032] In order to facilitate the processing of the clamping surface of the movable clamping block 5, the middle of the clamping surface of the movable clamping block 5 is in an arc transition, so that when the movable clamping block 5 is clamping the water cap, the stress of the two clamping points on the movable clamping block 5 can be diffused through the arc segment, avoiding damage to the water cap due to stress concentration.

[0033] In order to facilitate the driving of the movable clamping block 5, a screw rod 6 corresponding to the movable clamping block 5 is also installed on the fixed seat 1. The screw rod 6 is threadedly matched with the fixed seat 1, so that the screw rod 6 moves forward or backward on the fixed seat 1 when it rotates; at the same time, the end of the screw rod 6 extending into the fixed seat 1 is fixed to the movable clamping block 5, and the end of the screw rod 6 extending outside the fixed seat 1 is installed with a handle 7. In order to realize the automatic advancement and automatic retreat of the movable clamping block 5, a cylinder, hydraulic cylinder or electronic telescopic element can also be installed on the fixed seat 1 to replace the screw rod 6. At this time, the cylinder, hydraulic cylinder or electronic telescopic element is fixed on the outer wall of the fixed seat 1, and the output end of the cylinder, hydraulic cylinder or electronic telescopic element passes through the fixed seat 1 and is fixed to the movable clamping block 5. The movable clamping block 5 is driven forward or backward by the cylinder, hydraulic cylinder or electronic telescopic element, thereby realizing the automatic clamping or automatic loosening of the water cap.

[0034] In the present invention, when there are two movable clamping blocks 5, both movable clamping blocks 5 are connected with a screw rod 6. At this time, the two movable clamping blocks 5 are driven forward and backward respectively.

[0035] In order to make the water cap more stable after being clamped, the side wall of the fixing seat 1 where the movable clamping block 5 is not installed and the inner bottom surface of the fixing seat 1 are both V-shaped, so that when the water cap is clamped, in addition to the two clamping points of the movable clamping block 5, the water cap and the fixing seat 1 have four clamping points, so that the clamping points on the water cap are more evenly distributed, effectively avoiding damage due to stress concentration.

[0036] In the utility model, in order to ensure that the movable clamping block 5 is always in a straight line during the forward and backward movement, a groove 4 can be further opened on the fixed seat 1, and the movable clamping block 5 can be installed in the groove 4, so that the movable clamping block 5 can be guided by both sides of the groove 4 during the forward or backward movement, thereby ensuring that the movable clamping block 5 moves forward or backward; at the same time, in order to prevent the movable clamping block 5 from falling off from the groove 4, the groove 4 can be designed to be a "convex" type. At this time, the structure of the movable clamping block 5 matches the structure of the groove 4.

[0037] In order to disperse the clamping points on the water cap as much as possible when the water cap is clamped, the side of the fixed seat 1 where the movable clamping block 5 is not installed can be set higher, and the clamping point on the side of the fixed seat 1 where the movable clamping block 5 is not installed can be higher than the clamping point on the movable clamping block 5.

[0038] When processing the water cap, first place the water cap on the fixed seat 1, rotate the screw rod 6 in the forward direction, the screw rod 6 pushes the movable clamping block 5 forward, the movable clamping block 5 cooperates with the inner wall of the fixed seat 1 to clamp and fix the water cap, and then use the drill bit to process the water hole on the water cap; when the first water hole is processed, rotate the screw rod 6 in the reverse direction, the screw rod 6 drives the movable clamping block 5 to retreat, the movable clamping block 5 loses the clamping of the water cap, and the water cap is rotated to keep the central axis of the water eye and the central axis of the positioning hole 8 in the same straight line, and insert the positioning rod 9 into the water eye and the positioning hole 8 together, so that the water cap cannot rotate or move axially on the fixed seat 1, so as to realize the positioning of the water cap; then, the movable clamping block 5 moves forward, the movable clamping block 5 cooperates with the inner wall of the fixed seat 1 to clamp and fix the water cap again, and the drill bit processes the second water hole; repeat this until all the water holes on the water cap are processed.

[0039] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A clamping tool for water cap processing, characterized in that: The invention comprises a U-shaped fixing seat (1), a positioning hole (8) is provided on one side of the fixing seat (1), and a movable clamping block (5) which can be moved close to or away from the center of the fixing seat (1) is installed on the other side of the fixing seat (1).

2. The clamping tool for water cap processing according to claim 1, characterized in that: The shape of the side wall of the fixing seat (1) on which the movable clamping block (5) is not installed matches the outer wall of the water cap.

3. The clamping tool for water cap processing according to claim 1, characterized in that: The shape of the positioning hole (8) is the same as that of the water hole.

4. The clamping tool for water cap processing according to claim 1, characterized in that: The angle between the positioning hole (8) and the central axis of the clamped water cap is 90° or / and 120°.

5. The clamping tool for water cap processing according to claim 1, characterized in that: There are two movable clamping blocks (5), and the two movable clamping blocks (5) are arranged at intervals along the length direction of the fixing seat (1).

6. The clamping tool for water cap processing according to claim 1, 2, 3, 4 or 5, characterized in that: A screw rod (6) connected to the movable clamping block (5) is also mounted on the fixing seat (1), and the screw rod (6) is threadedly matched with the fixing seat (1).

7. The clamping tool for water cap processing according to claim 6, characterized in that: A handle (7) is also installed at the outer end of the screw rod (6).

8. The clamping tool for water cap processing according to claim 1, 2, 3, 4 or 5, characterized in that: The inner wall of the fixing seat (1) and the clamping surface of the movable clamping block (5) are V-shaped.

9. The clamping tool for water cap processing according to claim 8, characterized in that: The middle of the clamping surface of the movable clamping block (5) is in an arc-shaped transition.

10. The clamping tool for water cap processing according to claim 1, 2, 3, 4 or 5, characterized in that: The inner wall of the fixing seat (1) is also provided with a groove (4) for accommodating a movable clamping block (5).

Images