Machining tool for middle block of methanol sprayer
By designing specialized machining fixtures, the machining challenges caused by the special shape of the intermediate block of the methanol injector were solved, achieving stable fixing and rapid discharge, thus improving machining accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2026-03-13
AI Technical Summary
In the existing technology, the special shape design of the intermediate block of the methanol injector makes it impossible to directly perform rotary machining of ordinary shaft parts, which increases the machining difficulty and precision requirements.
A machining fixture including a tooling body, a positioning pin, a crescent-shaped pressure plate, an internal hexagonal screw, and an ejector mechanism was designed. Through the positioning of the eccentric center hole and the cooperation of the ejector mechanism, the middle block can be stably fixed and quickly discharged.
It reduces the difficulty of fixing intermediate blocks, improves processing stability and accuracy, simplifies size control, increases production efficiency, and enables the quick removal of processed parts.
Smart Images
Figure CN121649787A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of machining tooling for intermediate blocks of methanol injectors, specifically to a machining tooling for intermediate blocks of methanol injectors. Background Technology
[0002] The methanol injector is a very important component of dual-fuel diesel engines. The intermediate block is a crucial part that effectively ensures the normal operation of the dual-fuel diesel engine in methanol fuel mode. In the existing technology, the intermediate block needs to be machined with an eccentric hole. However, the eccentric hole of the intermediate block is obviously not concentric with the outer circle, and the hole has high positional accuracy requirements. In addition, the hole has very high precision requirements, and machining equipment such as lathes and grinders are required to perform rotary machining on its inner hole and seat surface, and both end faces need to be machined.
[0003] When fixing the intermediate block, the special shape design of the intermediate block makes it impossible to perform rotary machining such as turning and grinding of the outer diameter of the part directly, just like the central hole of ordinary shaft parts, which increases the difficulty of machining. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a machining fixture for the intermediate block of a methanol injector, thereby solving the technical problem that the special shape design of the intermediate block makes it impossible to directly perform rotary machining such as turning and grinding of the outer diameters of this type of part, as is the case with the central hole of ordinary shaft parts, thus increasing the difficulty of machining.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the present invention provides the following technical solution: a machining fixture for a methanol injector intermediate block, comprising: a fixture body, wherein a positioning pin is assembled inside the fixture body, a crescent-shaped pressure plate is assembled on the top of the fixture body, and hexagonal screws are evenly distributed between the crescent-shaped pressure plate and the fixture body, and a pin mechanism is provided inside the fixture body.
[0008] Preferably, the bottom of the tooling body is equipped with a tool that allows the tooling body to be mounted on the outside of the machine tool.
[0009] Preferably, the tooling body is a disc with an eccentric central hole at the top, and the positioning pin is fitted inside the eccentric central hole, which can hold the intermediate block to be processed and the positioning pin.
[0010] Preferably, the ejector mechanism includes a bent tube, a T-shaped arm is slidably connected inside the bent tube, a force-bearing plate is assembled inside the bent tube, and a top plate is assembled on the top of the force-bearing plate. The bent tube is embedded inside the tooling body, the T-shaped arm can be pressed and then drive the force-bearing plate to move, and the top plate is driven to rise and drive the processed intermediate block to be discharged.
[0011] Preferably, both sides inside the bend are connected to return plates, and a return spring is connected between the return plate and the T-arm. The return spring, in conjunction with the return plate, drives the T-arm to return to its original position after the movement is completed.
[0012] Preferably, both sides of the load-bearing plate are equipped with seated bearings, and the seated bearings are connected to the bend, so that the load-bearing plate can be supported.
[0013] Preferably, pull ropes are connected to both sides of the top of the force-bearing plate, and the pull ropes are respectively connected to the bottom of the top plate and the T-shaped arm. The pull ropes can improve the transmission effect of the force-bearing plate.
[0014] (III) Beneficial Effects
[0015] Compared with the prior art, the present invention provides a machining fixture for the intermediate block of a methanol injector, which has the following advantages:
[0016] This methanol injector intermediate block machining fixture significantly reduces the difficulty of fixing the intermediate block while improving stability during machining, ensuring product accuracy, reducing adjustment difficulty, facilitating dimensional control during machining, effectively guaranteeing part dimensional accuracy, improving product quality, facilitating installation, saving machining time, and increasing production efficiency. Furthermore, the added ejector mechanism allows the intermediate block to be quickly removed from the device after machining, preventing it from getting stuck inside the fixture body due to mismatch between the intermediate block and the fixture body. Attached Figure Description
[0017] Figure 1 This is a front view of the present invention;
[0018] Figure 2 This is a front view of the ejector pin mechanism of the present invention;
[0019] Figure 3 This is a front sectional view of the ejector mechanism of the present invention;
[0020] Figure 4 This is a schematic diagram of the workpiece being processed according to the present invention.
[0021] In the diagram: 1. Tooling body; 2. Locating pin; 3. Crescent-shaped pressure plate; 4. Socket head screw; 5. Ejector mechanism; 51. Bend; 52. T-arm; 53. Return spring; 54. Return plate; 55. Force plate; 56. Bearing with seat; 57. Pull rope; 58. Top plate; 6. Intermediate block to be machined. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] This invention provides a technical solution; please refer to [link / reference]. Figure 1 and Figure 2 as well as Figure 4 A machining fixture for a methanol injector intermediate block includes: a fixture body 1, a positioning pin 2 installed inside the fixture body 1, a crescent-shaped pressure plate 3 installed on the top of the fixture body 1, and hexagonal screws 4 evenly distributed between the crescent-shaped pressure plate 3 and the fixture body 1, and an 11 installed at the bottom of the fixture body 1. The fixture body 1 is a disc with an eccentric central hole at the top, and the positioning pin 2 is installed inside the eccentric central hole.
[0024] The eccentric central hole has two sets of locating pin holes, which are used to mate with the pin holes of the parts during the machining of the two end faces of the intermediate block 6 and to install the locating pin 2. The gap between the pin hole and the locating pin 2 is controlled within 0.01mm on one side to ensure the accuracy of positioning. The top of the tooling body 1 is designed with three screw holes, which are used in conjunction with the crescent-shaped pressure plate 3 to fix the intermediate block 6. The intermediate block 6 can be assembled inside the tooling body 1. The intermediate block 6 is a methanol injector intermediate block and is a shaft-type part.
[0025] Please see Figure 2 and Figure 3 The tool body 1 has an ejector mechanism 5 inside. The ejector mechanism 5 includes a bent tube 51. The bent tube 51 is a bent tube with slots on both sides of the top. A T-shaped arm 52 is slidably connected inside the bent tube 51. The T-shaped arm 52 can slide up and down inside the bent tube 51 to drive the force plate 55 to move.
[0026] The inside of the bend 51 is equipped with a force plate 55, which can drive the top plate 58 to rise. The top plate 58 is also equipped on the top of the force plate 55. Both sides inside the bend 51 are connected to return plates 54, and a return spring 53 is connected between the return plates 54 and the T-shaped arm 52.
[0027] Both sides of the force plate 55 are equipped with seated bearings 56, and the seated bearings 56 are connected to the bend 51. Both sides of the top of the force plate 55 are connected with pull ropes 57, and the pull ropes 57 are connected to the bottom of the top plate 58 and the T-shaped arm 52 respectively. The return spring 53, together with the return plate 54, can make the T-shaped arm 52 return to its original position after movement. The pull ropes 57 can improve the transmission effect of the force plate 55 to the top plate 58. Furthermore, the ejector mechanism 5 utilizes the lever principle to increase the discharge speed of the processed intermediate block 6 after processing.
[0028] This solution involves assembling the tool body 1 onto the outside of the machine tool, assembling the positioning pin 2 into the eccentric central hole inside the tool body 1, inserting the intermediate block 6 to be machined into the eccentric central hole inside the tool body 1, placing the crescent-shaped pressure plate 3 on top of the tool body 1, fixing the position of the crescent-shaped pressure plate 3 with the hexagon socket screw 4, and machining the intermediate block 6 with a cutting tool.
[0029] After the intermediate block 6 is processed, the crescent-shaped pressure plate 3 is released by the internal hex screw 4, and then the T-shaped arm 52 is pressed down, which in turn drives the force plate 55 to rotate, pushes the top plate 58 to rise, and finally pushes the intermediate block 6 out of the eccentric central hole inside the tooling body 1, thus completing the processing of the intermediate block 6.
[0030] Before processing, the intermediate block 6 can be quickly fixed inside the tooling body 1 according to its shape by adding the tooling body 1, positioning pin 2, crescent-shaped pressure plate 3 and internal hex screw 4. Then the position of the eccentric hole of the intermediate block 6 is fixed, which facilitates the processing of the intermediate block 6, compared with the traditional processing method.
[0031] This invention significantly reduces the difficulty of fixing the intermediate block 6 being processed, while improving the stability of the intermediate block 6 during processing, ensuring product accuracy, reducing adjustment difficulty, facilitating dimensional control during processing, effectively ensuring the dimensional accuracy of parts, effectively improving product quality, facilitating installation, effectively saving processing time, and improving production efficiency. Furthermore, through the added ejector mechanism 5, after the intermediate block 6 is processed, it can be quickly removed from the inside of the device, avoiding the intermediate block 6 from being stuck inside the tooling body 1 due to its compatibility with the tooling body 1 and being unable to be quickly removed.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.
[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A machining fixture for an intermediate block of a methanol injector, comprising: The tooling body (1) is characterized in that: a positioning pin (2) is installed inside the tooling body (1), a crescent-shaped pressure plate (3) is installed on the top of the tooling body (1), and hexagonal screws (4) are evenly distributed between the crescent-shaped pressure plate (3) and the tooling body (1), and a pin mechanism (5) is opened inside the tooling body (1).
2. The machining fixture for the intermediate block of a methanol injector according to claim 1, characterized in that: The bottom of the tooling body (1) is equipped with (11).
3. The machining fixture for the intermediate block of a methanol injector according to claim 1, characterized in that: The tooling body (1) is a disc with an eccentric central hole at the top, and the positioning pin (2) is fitted inside the eccentric central hole.
4. The machining fixture for the intermediate block of a methanol injector according to claim 1, characterized in that: The ejector mechanism (5) includes a bent tube (51), a T-shaped arm (52) is slidably connected inside the bent tube (51), a force plate (55) is assembled inside the bent tube (51), and a top plate (58) is assembled on the top of the force plate (55).
5. The machining fixture for the intermediate block of a methanol injector according to claim 4, characterized in that: Both sides of the inside of the bend (51) are connected to return plates (54), and a return spring (53) is connected between the return plates (54) and the T-arm (52).
6. The machining fixture for the intermediate block of a methanol injector according to claim 4, characterized in that: Both sides of the load-bearing plate (55) are equipped with seated bearings (56), and the seated bearings (56) are connected to the bend (51).
7. The machining fixture for the intermediate block of a methanol injector according to claim 4, characterized in that: The top two sides of the load-bearing plate (55) are connected to pull ropes (57), and the pull ropes (57) are connected to the bottom of the top plate (58) and the T-shaped arm (52) respectively.