A cast drilling positioning tool

Abstract

This application relates to the field of drilling equipment technology and discloses a casting drilling positioning fixture, including a base plate, a fixture bracket fixedly connected to the upper side of the base plate, a rotating shaft rotatably connected to the inner side of the fixture bracket, and a mounting base fixedly connected to one end of the rotating shaft. This casting drilling positioning fixture, through the cooperative action of a telescopic cylinder, a pressing plate, and a positioning block, can quickly clamp and position the casting. Then, the axial linkage between the rotating shaft and the turntable allows for circumferential angle adjustment of the casting. Subsequently, the slots on the turntable surface, through limiting components, ensure the stability of the casting after angle adjustment, thereby guaranteeing the stability of the casting during drilling. The entire fixture enables rapid clamping and angle adjustment of the casting, ensuring the continuity of position adjustment during multi-hole machining, significantly improving processing efficiency and accuracy consistency. Simultaneously, the integrated structural design reduces human intervention and lowers the risk of clamping errors.

Description

Technical Field

[0001] This application relates to the field of drilling equipment technology, specifically to a positioning fixture for drilling holes in castings. Background Technology

[0002] Castings are shaped metal objects obtained through various casting methods. This involves pouring, injecting, suction, or other casting methods into a pre-prepared mold, allowing it to cool, and then processing it through grinding and other subsequent steps. Castings are closely related to daily life. During the processing of castings, holes can be machined into them to meet specific design requirements or connection needs.

[0003] Currently, some castings are irregular and require drilling at specific locations. Traditional drilling processes lack reasonable positioning fixtures, resulting in poor efficiency or inconsistent processing quality. Furthermore, when machining multiple holes in irregular castings, after drilling one hole, the casting needs to be removed from the drilling equipment, manually rotated and adjusted to adjust its position, and then re-clamped onto the drilling equipment to drill the next hole. This method not only increases the labor intensity of workers but also easily introduces clamping errors during re-clamping, further affecting the accuracy and quality of drilling. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a casting drilling positioning fixture that enables rapid clamping and angle adjustment of castings, ensuring the continuity of position adjustment during multi-hole machining, significantly improving machining efficiency and accuracy consistency. Furthermore, its integrated structural design reduces human intervention and lowers the risk of clamping errors, thus solving the problems mentioned in the background technology.

[0005] To achieve the above objectives, this application provides the following technical solution: a casting drilling positioning fixture, comprising a base plate, a fixture bracket fixedly connected to the upper side of the base plate, a rotating shaft rotatably connected to the inner side of the fixture bracket, a mounting base fixedly connected to one end of the rotating shaft, an insertion block inserted into the inner side of the mounting base, a positioning block fixedly connected to the outer side of the insertion block, a limiting component provided on the outer side of the fixture bracket, a turntable fixedly connected to the other end of the rotating shaft, a plurality of circumferentially arrayed slots opened on the outer side of the turntable, a rotating handle rotatably mounted on the outer side of the turntable, a telescopic cylinder fixedly embedded in one side of the fixture bracket, a fixing plate fixedly connected to the output end of the telescopic cylinder, a pressing plate rotatably connected to the outer side of the fixing plate, a support frame fixedly connected to the upper side of the base plate, a hydraulic cylinder fixedly embedded in the upper side of the support frame, and a drilling device mounted on the output end of the hydraulic cylinder.

[0006] The above scheme achieves rapid clamping and positioning of castings by coordinating the telescopic cylinder, extrusion plate, and positioning block. Then, the axial linkage between the rotating shaft and turntable allows for circumferential angle adjustment of the casting. The slots on the turntable surface, through their interaction with the limiting components, ensure the stability of the casting after angle adjustment, thus guaranteeing stability during drilling. Overall, the scheme enables rapid clamping and angle adjustment of castings, ensuring the continuity of position adjustment during multi-hole machining, significantly improving processing efficiency and accuracy consistency. Simultaneously, the integrated structural design reduces human intervention and lowers the risk of clamping errors.

[0007] Furthermore, the mounting base and the plug-in block are fixedly connected by bolts.

[0008] The above solution facilitates quick disassembly and maintenance by setting the bolt connection between the mounting base and the plug-in block, while ensuring connection strength, preventing components from loosening due to vibration, and improving the overall stability and service life of the tooling.

[0009] Furthermore, a protective pad is fixedly connected to the outer side of the extrusion plate, and the protective pad is made of rubber.

[0010] Through the above solution, the flexible material with protective pads can effectively buffer the impact of clamping force and prevent damage to the surface of the casting. Its high friction characteristics enhance the reliability of clamping and are especially suitable for fixing irregularly shaped contact surfaces of castings.

[0011] Furthermore, two second guide rods are fixedly connected to one side of the fixing plate, and the outer side of the second guide rods is slidably connected to the inner side of the tooling bracket.

[0012] The above scheme ensures precise and controllable movement trajectory of the fixed plate through the guiding constraint design of two second guide rods, eliminates the possibility of lateral offset, and improves the stability of the extrusion plate clamping.

[0013] Furthermore, a shaped positioning groove is provided on one side of the positioning block, and a through hole adapted to the slot is provided on the outer side of the positioning block, with the inner wall of the through hole communicating with the inner wall of the shaped positioning groove.

[0014] The above scheme, with its uniquely shaped positioning groove, can meet the initial positioning requirements of irregularly shaped castings. At the same time, the combination of perforation and slot enables self-calibration of angle positioning, enhancing the coordinate correlation of multi-hole machining.

[0015] Furthermore, the outer side of the handle is covered with a rubber sleeve.

[0016] The above-mentioned design improves the comfort and anti-slip performance of manual operation by adding an outer layer to the handle, and reduces the risk of slippage during adjustment.

[0017] Furthermore, the limiting component includes a frame fixedly connected to the outside of the tooling bracket, a movable plate provided on the inner side of the frame, an insert block fixedly connected to one end of the movable plate, and the outer side of the insert block inserted into the inner side of the frame, one end of the insert block inserted into the inner side of the slot, the insert block and the slot being compatible, and two springs fixedly connected to one side of the movable plate, and the other end of the springs fixedly connected to the inner side of the frame.

[0018] The above solution achieves automatic locking after turntable angle adjustment by setting up a flexible insertion mechanism of a moving plate, insert block, and spring. There are no additional operation steps in the insertion process, and the elastic preload of the moving plate ensures the reliability of the insertion, significantly shortening the station changeover time.

[0019] Furthermore, two first guide rods are fixedly connected to the inner side of the frame, the inner side of the movable plate is slidably connected to the outer side of the first guide rods, and the two springs are respectively sleeved on the outer side of the first guide rods.

[0020] The above scheme optimizes the movement trajectory of the elastic component by setting the nested guide structure of the first guide rod and the spring, avoiding misalignment caused by spring overload. The dual guide design enhances the durability of the limiting mechanism and ensures that it maintains accurate insertion characteristics even after long-term use.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This casting drilling positioning fixture achieves rapid clamping and positioning of the casting through the cooperation of a telescopic cylinder, a pressing plate, and a positioning block. Then, the axial linkage between the rotating shaft and the turntable allows for circumferential angle adjustment of the casting. Subsequently, the slots on the turntable surface, through their interaction with the limiting components, ensure the stability of the casting after angle adjustment, thereby guaranteeing stability during casting drilling. The entire fixture enables rapid clamping and angle adjustment of the casting, ensuring the continuity of position adjustment during multi-hole machining, significantly improving machining efficiency and accuracy consistency. Simultaneously, the integrated structural design reduces human intervention and lowers the risk of clamping errors. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0024] Figure 2 This is a three-dimensional structural diagram of the rotating shaft, mounting base, and turntable of this application;

[0025] Figure 3 This is a three-dimensional structural diagram of the telescopic cylinder, the fixed plate, and the extrusion plate of this application;

[0026] Figure 4 This is a three-dimensional structural diagram of the positioning block in this application;

[0027] Figure 5 This is a three-dimensional structural diagram of the limiting component of this application.

[0028] In the picture:

[0029] 1. Base plate; 2. Tooling bracket; 3. Rotating shaft; 4. Mounting base; 5. Insertion block; 6. Positioning block; 7. Limiting component; 701. Frame; 702. Moving plate; 703. Insertion block; 704. Spring; 705. First guide rod; 8. Turntable; 9. Slot; 10. Rotating handle; 11. Telescopic cylinder; 12. Fixing plate; 13. Extrusion plate; 14. Protective pad; 15. Second guide rod; 16. Support frame; 17. Hydraulic cylinder; 18. Drilling equipment; 19. Irregular positioning groove; 20. Perforation. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a casting drilling positioning fixture includes a base plate 1, a fixture bracket 2 fixedly connected to the upper side of the base plate 1, a rotating shaft 3 rotatably connected to the inner side of the fixture bracket 2, a mounting base 4 fixedly connected to one end of the rotating shaft 3, a plug-in block 5 inserted into the inner side of the mounting base 4, and the mounting base 4 and the plug-in block 5 fixedly connected by bolts. The bolt connection between the mounting base 4 and the plug-in block 5 facilitates quick disassembly and maintenance, while ensuring connection strength, preventing loosening of components due to vibration, and improving the overall stability and service life of the fixture. A positioning block 6 is fixedly connected to the outer side of the plug-in block 5, a limiting component 7 is provided on the outer side of the fixture bracket 2, a turntable 8 is fixedly connected to the other end of the rotating shaft 3, a plurality of circumferentially arrayed slots 9 are opened on the outer side of the turntable 8, a rotating handle 10 is rotatably installed on the outer side of the turntable 8, a telescopic cylinder 11 is fixedly embedded on one side of the fixture bracket 2, a fixing plate 12 is fixedly connected to the output end of the telescopic cylinder 11, and a pressing plate 13 is rotatably connected to the outer side of the fixing plate 12.

[0032] Please see Figure 1 and Figure 3A support frame 16 is fixedly connected to the upper side of the base plate 1, and a hydraulic cylinder 17 is fixedly embedded in the upper side of the support frame 16. A drilling device 18 is installed at the output end of the hydraulic cylinder 17. Through the cooperation between the telescopic cylinder 11, the extrusion plate 13, and the positioning block 6, the casting can be quickly clamped and positioned. Then, the axial linkage between the rotating shaft 3 and the turntable 8 realizes the circumferential angle adjustment of the casting. Afterwards, the slots 9 arrayed on the surface of the turntable 8 limit the casting after angle adjustment by limiting the limit component 7, thereby ensuring the stability of the casting during drilling. The overall design enables rapid clamping and angle adjustment of castings, ensuring the continuity of position adjustment during multi-hole machining, significantly improving machining efficiency and precision consistency. At the same time, the integrated structural design reduces human intervention and lowers the risk of clamping errors. A protective pad 14 is fixedly connected to the outside of the extrusion plate 13. The protective pad 14 is made of rubber. The flexible material of the protective pad 14 can effectively buffer the impact of clamping force and prevent the surface of the casting from being crushed. Its high friction characteristics enhance the reliability of clamping, and it is especially suitable for fixing irregularly shaped contact surfaces of castings.

[0033] Please see Figure 2 , Figure 3 and Figure 4 Two second guide rods 15 are fixedly connected to one side of the fixed plate 12, and the outer side of the second guide rods 15 is slidably connected to the inner side of the tooling bracket 2. The guiding constraint design of the two second guide rods 15 ensures that the moving trajectory of the fixed plate 12 is accurate and controllable, eliminates the possibility of lateral displacement, and improves the stability of the clamping of the extrusion plate 13. A shaped positioning groove 19 is opened on one side of the positioning block 6, and a through hole 20 that matches the slot 9 is opened on the outer side of the positioning block 6. The number of slots 9 and through holes 20 is even. In this embodiment, the number of slots 9 and through holes 20 is four. Thus, when the slot 9 rotates to align with the limiting component 7, At the corresponding phase, one of the perforations 20 is directly above, thus ensuring that the drilling equipment 18 can pass through the perforation 20 to drill the casting in the positioning block 6. The inner wall of the perforation 20 is connected to the inner wall of the irregular positioning groove 19. The aforementioned irregular positioning groove 19 can meet the initial positioning requirements of irregular castings. At the same time, the cooperation between the perforation 20 and the slot 9 realizes angle positioning self-calibration, enhancing the coordinate correlation of multi-hole processing. The outer side of the rotating handle 10 is covered with a rubber sleeve. The aforementioned setting of the outer cover of the rotating handle 10 improves the comfort of manual operation and anti-slip performance, and reduces the risk of slippage during adjustment.

[0034] Please see Figure 1 and Figure 5The limiting component 7 includes a frame 701 fixedly connected to the outside of the tooling bracket 2. A movable plate 702 is provided on the inner side of the frame 701. One end of the movable plate 702 is fixedly connected to an insert block 703, and the outer side of the insert block 703 is inserted into the inner side of the frame 701. One end of the insert block 703 is inserted into the inner side of the slot 9, and the insert block 703 and the slot 9 are compatible. Two springs 704 are fixedly connected to one side of the movable plate 702, and the other end of the springs 704 is fixedly connected to the inner side of the frame 701. By setting the elastic insertion mechanism of the movable plate 702, the insert block 703, and the springs 704, the automatic locking of the turntable 8 after angle adjustment is realized. The fixed function and no additional operation steps are required during the insertion process. The elastic preload of the moving plate 702 ensures the reliability of the insertion and significantly shortens the station changeover time. Two first guide rods 705 are fixedly connected to the inner side of the frame 701, and the inner side of the moving plate 702 is slidably connected to the outer side of the first guide rods 705. Two springs 704 are respectively sleeved on the outer side of the first guide rods 705. The above-mentioned nested guide structure of the first guide rods 705 and springs 704 optimizes the movement trajectory of the elastic components and avoids insertion misalignment caused by the off-center load of the springs 704. The dual guide design enhances the durability of the limiting mechanism and ensures that the precise insertion characteristics are maintained even after long-term use.

[0035] This embodiment of a casting drilling positioning fixture enables rapid clamping and positioning of the casting through the cooperation of a telescopic cylinder 11, a pressing plate 13, and a positioning block 6. Subsequently, the axial linkage between the rotating shaft 3 and the turntable 8 enables circumferential angle adjustment of the casting. Then, the slots 9 arrayed on the surface of the turntable 8, through the limiting component 7, ensure the stability of the casting after angle adjustment, thereby ensuring the stability of the casting during drilling. The whole system can realize rapid clamping and angle adjustment of the casting, ensuring the continuity of position adjustment during multi-hole machining, significantly improving machining efficiency and accuracy consistency. At the same time, the integrated structural design reduces human intervention and lowers the risk of clamping errors.

[0036] The working principle of the above embodiment is as follows: When the casting is placed between the positioning block 6 and the extrusion plate 13, the irregular contour of the irregular positioning groove 19 matches the shape of the casting. Then, the fixing plate 12 adjusts the extension and retraction of the telescopic cylinder 11 to make the extrusion plate 13 generate a vertical clamping force. At the same time, the guiding constraint design of the second guide rod 15 ensures that the movement trajectory of the fixing plate 12 is accurate and controllable. At this time, the protective pad 14 undergoes elastic deformation under the push of the extrusion plate 13 to clamp and fix the casting. Then, when adjusting the angle, the rotating shaft 3 drives the turntable 8 to rotate through the manual rotation of the handle 10. At the same time, the rotating shaft 3 can drive the safety device to rotate. The mounting base 4, the insertion block 5, and the positioning block 6 rotate to adjust the angle of the casting. Then, when the slot 9 rotates to the phase corresponding to the insertion block 703, the elastic restoring force of the spring 704 drives the insertion block 703 to automatically insert into the slot 9 to complete the angle locking. At this time, an angle reference coordinate system for multi-hole processing is established between the through hole 20 and the slot 9, so that the limit component 7 automatically locks after the turntable 8 rotates by a preset angle, forming an indexing drilling cycle. During drilling, the hydraulic cylinder 17 drives the drilling equipment 18 to move vertically, and then the drill bit of the drilling equipment 18 passes through the through hole 20 to drill the internal casting.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting drilling positioning fixture, comprising a base plate (1), characterized in that: A tooling bracket (2) is fixedly connected to the upper side of the base plate (1). A rotating shaft (3) is rotatably connected to the inner side of the tooling bracket (2). A mounting base (4) is fixedly connected to one end of the rotating shaft (3). A plug-in block (5) is inserted into the inner side of the mounting base (4). A positioning block (6) is fixedly connected to the outer side of the plug-in block (5). A limiting component (7) is provided on the outer side of the tooling bracket (2). A turntable (8) is fixedly connected to the other end of the rotating shaft (3). A plurality of circumferentially arrayed clips are opened on the outer side of the turntable (8). The groove (9), the turntable (8) is rotatably mounted with a handle (10), the tooling bracket (2) is fixedly embedded with a telescopic cylinder (11) on one side, the output end of the telescopic cylinder (11) is fixedly connected with a fixing plate (12), the outer side of the fixing plate (12) is rotatably connected with a pressing plate (13), the upper side of the base plate (1) is fixedly connected with a support frame (16), the upper side of the support frame (16) is fixedly embedded with a hydraulic cylinder (17), and the output end of the hydraulic cylinder (17) is equipped with a drilling device (18).

2. The casting drilling positioning fixture according to claim 1, characterized in that: The mounting base (4) and the plug block (5) are fixedly connected by bolts.

3. The casting drilling positioning fixture according to claim 1, characterized in that: A protective pad (14) is fixedly connected to the outside of the extrusion plate (13), and the protective pad (14) is made of rubber.

4. The casting drilling positioning fixture according to claim 1, characterized in that: Two second guide rods (15) are fixedly connected to one side of the fixed plate (12), and the outer side of the second guide rods (15) is slidably connected to the inner side of the tooling bracket (2).

5. The casting drilling positioning fixture according to claim 1, characterized in that: The positioning block (6) has an irregularly shaped positioning groove (19) on one side, and a through hole (20) adapted to the slot (9) is provided on the outer side of the positioning block (6). The inner wall of the through hole (20) is connected to the inner wall of the irregularly shaped positioning groove (19).

6. The casting drilling positioning fixture according to claim 1, characterized in that: The outer side of the handle (10) is covered with a rubber sleeve.

7. The casting drilling positioning fixture according to claim 1, characterized in that: The limiting component (7) includes a frame (701) fixedly connected to the outside of the tooling bracket (2). The inner side of the frame (701) is provided with a movable plate (702). One end of the movable plate (702) is fixedly connected to an insert (703), and the outer side of the insert (703) is inserted into the inner side of the frame (701). One end of the insert (703) is inserted into the inner side of the slot (9). The insert (703) and the slot (9) are compatible. Two springs (704) are fixedly connected to one side of the movable plate (702), and the other end of the springs (704) is fixedly connected to the inner side of the frame (701).

8. A casting drilling positioning fixture according to claim 7, characterized in that: The inner side of the frame (701) is fixedly connected to two first guide rods (705), the inner side of the movable plate (702) is slidably connected to the outer side of the first guide rods (705), and the two springs (704) are respectively sleeved on the outer side of the first guide rods (705).

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