Rocker arm machining tool

Abstract

The utility model relates to the technical field of rocker arm tools, and provides a rocker arm machining tool which comprises a tool base, a fixing support and a supporting block, the fixing support is installed on the top of the tool base, a rocker arm body is arranged at the front end of the fixing support, a supporting assembly is arranged at the rear end of the rocker arm body, and an upper pressing assembly is arranged at the lower end of the rocker arm body. The rocker arm body is arranged on the clamp core rod in a sleeved mode, primary fixing is achieved through the opening baffle and the tightening screw, and then the rocker arm body is matched with two-way pressing of the limiting pin with the adjustable position and the pressing rod. According to the rocker arm clamping tool, accurate positioning and stable clamping of a rocker arm body can be achieved, it can be guaranteed that the rocker arm is kept stable in the machining process, displacement or shaking of the rocker arm is effectively prevented, the rocker arm clamping tool can be suitable for clamping operation of rocker arms of different sizes, and the applicability of the rocker arm clamping tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of rocker arm tooling technology, and in particular to a rocker arm machining tooling. Background Technology

[0002] In the field of engine manufacturing and repair, the valve rocker arm, as a key transmission component, plays a decisive role in the engine's valve timing performance. Because valve rocker arms are usually formed using casting processes, their shape is complex and their structure is irregular, making them typical irregular-shaped parts.

[0003] These irregular structures make it difficult for traditional general-purpose tooling to effectively fit the complex shape of the valve rocker arm. During the clamping process, uneven local force and unstable clamping are very likely to occur, which cannot meet the strict requirements for workpiece positioning accuracy and clamping force during the processing. Utility Model Content

[0004] The purpose of this invention is to provide a rocker arm machining fixture, which solves the above-mentioned problems when used in operation.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rocker arm processing fixture, including a fixture base, a fixed support and a support block. The fixed support is installed on the top of the fixture base, the rocker arm body is provided at the front end of the fixed support, the support component is provided at the rear end of the rocker arm body, the upper pressing component is provided at the lower end of the rocker arm body, the lower pressing component is provided at the rear end of the fixed support, and a counterweight is installed on one side of the top of the fixture base.

[0006] Preferably, the support assembly includes a clamping mandrel disposed at the rear end of the rocker arm body, the clamping mandrel is installed at the front end of the fixed support, the rocker arm body is sleeved on the clamping mandrel, the front end of the rocker arm body is provided with a screw hole, a tightening screw is threaded into the screw hole, and an open baffle is sleeved on the outside of the screw rod of the tightening screw, the open baffle is in close contact with the side wall of the rocker arm body.

[0007] Preferably, the upper pressure assembly includes a pin seat disposed at the lower end of the rocker arm body. The pin seat is installed on the top of the tooling base and located at the front end of the fixed support. A pin groove is provided on the top of the pin seat. A limit pin is provided inside the pin groove. A screw groove is provided on one side of the pin groove. The screw groove is connected to the pin groove. A hand screw is threaded inside the screw groove. The end of the hand screw extends into the pin groove and abuts against the side wall of the limit pin.

[0008] Preferably, the sidewall of the locating pin facing the hand-tightening screw is an inclined end face, and both the screw groove and the hand-tightening screw are inclined designs. The end of the hand-tightening screw is perpendicular to the inclined end face of the locating pin and abuts against it.

[0009] Preferably, the pressing component includes a through groove opened inside the fixed support, the through groove being located on one side of the clamping mandrel, a pressure rod being provided inside the through groove, the front end of the support block being located above the rocker arm body, and a support block being provided at the rear end of the bottom of the pressure rod, the support block being installed at the rear end of the fixed support.

[0010] Preferably, the support block has a fixing groove inside, and a clamping screw is threaded inside the fixing groove. Shaft grooves are provided on both sides inside the through groove, and a support shaft is provided in the shaft groove.

[0011] Preferably, the support shaft is inserted into the shaft groove on one side and extends into the shaft groove on the other side through the pressure rod, and the pressure rod can rotate about the support shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The rocker arm machining fixture provided by this utility model, by fitting the rocker arm body onto the clamping mandrel, and using the open baffle and tightening screws to achieve initial fixation, and then cooperating with the bidirectional clamping of the adjustable position limiting pin and the pressure rod, can achieve precise positioning and stable clamping of the rocker arm body. This not only ensures that the rocker arm remains stable during the machining process and effectively prevents it from shifting or shaking, but also makes the fixture applicable to the clamping operation of rocker arms of different sizes, thus improving the applicability of the fixture.

[0014] 2. The rocker arm machining fixture provided by this utility model has a limiting pin that can move to the desired position in the pin groove and be fixed by a hand-tightening screw. The hand-tightening screw abuts against the inclined end face of the limiting pin and provides auxiliary support when the limiting pin is under pressure to prevent it from moving downward. The pressure rod rotates around the support shaft to press down on the top of the rocker arm body. This structural design makes full use of mechanical principles and enhances the overall stability and reliability of the fixture.

[0015] 3. The present invention provides a rocker arm processing fixture, wherein the counterweight block installed on the top of the fixture base provides weight treatment for the fixture, effectively adjusting the overall center of gravity distribution, avoiding vibration of the fixture during operation, preventing vibration marks from being generated in the processed rocker arm body, thereby ensuring the appearance quality and performance of the rocker arm body, and improving the product qualification rate and service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0018] Figure 3 This is an exploded view of the overall structure of this utility model;

[0019] Figure 4This is a partial structural exploded view of the present invention;

[0020] Figure 5 This is a front view structural diagram of the present utility model;

[0021] Figure 6 This is a side view of the structure of this utility model.

[0022] The reference numerals in the figure are as follows: 1. Tooling base; 2. Fixed support; 21. Fixture mandrel; 22. Screw hole; 23. Opening baffle; 24. Tightening screw; 3. Support block; 31. Pressure rod; 311. Through groove; 32. Support shaft; 321. Shaft groove; 33. Tightening screw; 331. Fixing groove; 4. Pin seat; 41. Hand screw; 411. Screw groove; 42. Limiting pin; 421. Pin groove; 5. Rocker arm body; 6. Counterweight block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0025] Combination Figures 1 to 6 As shown, the present invention provides a rocker arm processing fixture, including a fixture base 1, a fixed support 2, and a support block 3. The fixed support 2 is installed on the top of the fixture base 1. The rocker arm body 5 is provided at the front end of the fixed support 2. The support component is provided at the rear end of the rocker arm body 5. The upper pressing component is provided at the lower end of the rocker arm body 5. The lower pressing component is provided at the rear end of the fixed support 2. A counterweight block 6 is installed on one side of the top of the fixture base 1.

[0026] The support assembly includes a clamping mandrel 21 located at the rear end of the rocker arm body 5. The clamping mandrel 21 is mounted on the front end of the fixed support 2. The rocker arm body 5 is fitted onto the clamping mandrel 21. A screw hole 22 is provided at the front end of the rocker arm body 5. A tightening screw 24 is connected to the screw hole 22 by internal thread. An open baffle 23 is fitted on the outside of the screw of the tightening screw 24. The open baffle 23 is in close contact with the side wall of the rocker arm body 5.

[0027] The upper pressure assembly includes a pin seat 4 located at the lower end of the rocker arm body 5. The pin seat 4 is installed on the top of the tooling base 1 and located at the front end of the fixed support 2. A pin groove 421 is provided on the top of the pin seat 4. A limiting pin 42 is provided inside the pin groove 421. A screw groove 411 is provided on one side of the pin groove 421. The screw groove 411 is connected to the pin groove 421. A hand screw 41 is threaded inside the screw groove 411. The end of the hand screw 41 extends into the pin groove 421 and abuts against the side wall of the limiting pin 42.

[0028] The side wall of the limiting pin 42 facing the hand screw 41 is an inclined end face. Both the screw groove 411 and the hand screw 41 are inclined designs. The end of the hand screw 41 is perpendicular to the inclined end face of the limiting pin 42 and abuts against it.

[0029] The pressing component includes a through groove 311 opened inside the fixed support 2. The through groove 311 is located on one side of the clamp mandrel 21. A pressure rod 31 is provided inside the through groove 311. The front end of the support block 3 is located above the rocker arm body 5. The rear end of the bottom of the pressure rod 31 is provided with a support block 3. The support block 3 is installed at the rear end of the fixed support 2.

[0030] The support block 3 has a fixing groove 331 inside, and a clamping screw 33 is threaded inside the fixing groove 331. Shaft grooves 321 are opened on both sides inside the through groove 311, and a support shaft 32 is installed in the shaft groove 321.

[0031] The support shaft 32 is inserted into the shaft groove 321 on one side and extends into the shaft groove 321 on the other side through the pressure rod 31. The pressure rod 31 can rotate about the support shaft 32.

[0032] Specifically, during the installation of the rocker arm body 5, firstly, the rocker arm body 5 is placed on the clamping mandrel 21. Then, the opening baffle 23 is placed over the screw of the tightening screw 24. Next, the tightening screw 24 is slowly screwed into the screw hole 22. When the opening baffle 23 is pushed tightly against the side wall of the rocker arm body 5 by the tightening screw 24, the initial fixing of the rocker arm body 5 is completed. The purpose of the initial fixing is to initially constrain the position of the rocker arm body 5 and prevent it from shifting significantly during subsequent operations.

[0033] After initial fixing, the adjustment and positioning of the limiting pin 42 proceeds. First, the position of the limiting pin 42 within the pin slot 421 is moved. Due to differences in positioning between rocker arm bodies 5 of different specifications and processing requirements, the limiting pin 42 needs to be moved to the required precise position according to the actual situation. During the movement, once the limiting pin 42 reaches the predetermined position, the hand screw 41 is turned to ensure its end is tightly abutted against the inclined side wall of the pin seat 4. Then, the rocker arm body 5 is rotated so that the front end of its bottom perfectly aligns with the top of the limiting pin 42. In this way, the limiting pin 42 provides strong support for the front end of the bottom of the rocker arm body 5. It is worth noting that when the limiting pin 42 is subjected to downward pressure, the hand screw 41 is tightly pressed against the inclined end face of the limiting pin 42. The hand screw 41 can provide strong auxiliary support for the limiting pin 42 from the side. Through the principle of force decomposition and interaction, the limiting pin 42 will not easily move down due to pressure, thus ensuring the stability of the bottom positioning of the rocker arm body 5.

[0034] Finally, the final clamping operation of the rocker arm body 5 is performed. Since the pressure rod 31 can rotate flexibly around the support shaft 32, the upper end of the pressure rod 31 is gradually pushed against the rear of the pressure rod 31 by rotating the clamping screw 33. As the clamping screw 33 rotates, the pressure rod 31 rotates around the support shaft 32, at which point the front part of the pressure rod 31 gradually presses down on the front end of the top of the rocker arm body 5. When the front part of the pressure rod 31 is tightly pressed against the front end of the top of the rocker arm body 5, a clamping force is formed in both directions. The clamping operation of the rocker arm body 5 is completed by utilizing the coordinated clamping action of the pressure rod 31 and the limiting pin 42. This clamping method not only ensures the stability of the rocker arm body 5 during processing, effectively preventing displacement or wobbling, but also is applicable to the clamping operation of rocker arm bodies 5 of different sizes, improving the applicability of the tooling.

[0035] It is important to note that a counterweight 6 is installed on one side of the top of the fixture base 1. By using the counterweight 6 to adjust the weight distribution of the fixture, the overall center of gravity can be effectively adjusted. During the operation of the fixture, proper counterweighting can keep the fixture running smoothly, greatly avoiding vibration caused by an unstable center of gravity. The vibration of the fixture directly affects the machining accuracy and quality. If the fixture vibrates, the surface of the rocker arm body 5 is prone to developing vibration marks. These vibration marks not only affect the appearance quality of the rocker arm body 5, but also have a serious negative impact on its performance and service life.

[0036] 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.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rocker arm machining tooling, comprising a tooling base (1), a fixed support (2) and a support block (3), characterized in that: The top of the tool base (1) is provided with a fixed support (2), the front end of the fixed support (2) is provided with a rocker body (5), the rear end of the rocker body (5) is provided with a supporting assembly, the lower end of the rocker body (5) is provided with an upper pressing assembly, the rear end of the fixed support (2) is provided with a lower pressing assembly, and one side of the top of the tool base (1) is provided with a counterweight (6).

2. The rocker arm machining tooling fixture of claim 1, wherein: The supporting assembly comprises a clamp core rod (21) arranged at the rear end of the rocker body (5), the clamp core rod (21) is arranged at the front end of the fixed support (2), the rocker body (5) is sleeved on the clamp core rod (21), the front end of the rocker body (5) is provided with a threaded hole (22), a threaded screw (24) is screwed in the threaded hole (22), an open baffle (23) is sleeved on the threaded screw (24), and the open baffle (23) is tightly attached to the side wall of the rocker body (5).

3. The rocker arm machining tooling fixture of claim 2, wherein: The upper pressing assembly comprises a pin seat (4) arranged at the lower end of the rocker body (5), the pin seat (4) is arranged at the top of the tool base (1) and located at the front end of the fixed support (2), the top of the pin seat (4) is provided with a pin slot (421), a limiting pin (42) is arranged in the pin slot (421), a screw slot (411) is arranged on one side of the pin slot (421), the screw slot (411) is communicated with the pin slot (421), a hand screw (41) is screwed in the screw slot (411), and the end of the hand screw (41) extends into the pin slot (421) and abuts against the side wall of the limiting pin (42).

4. The rocker arm machining tooling fixture of claim 3, wherein: The side wall of the limiting pin (42) facing the hand screw (41) is an inclined end face, the screw slot (411) and the hand screw (41) are both inclined, and the end of the hand screw (41) is perpendicular to the inclined end face of the limiting pin (42) and abuts against the inclined end face.

5. The rocker arm machining tooling fixture of claim 4, wherein: The lower pressing assembly comprises a through slot (311) arranged in the fixed support (2), the through slot (311) is located on one side of the clamp core rod (21), the through slot (311) is provided with a pressing rod (31), the front end of the supporting block (3) is located above the rocker body (5), the rear end of the bottom of the pressing rod (31) is provided with the supporting block (3), and the supporting block (3) is arranged at the rear end of the fixed support (2).

6. The rocker arm machining tooling fixture of claim 5, wherein: The inside of the supporting block (3) is provided with a fixed slot (331), the fixed slot (331) is screwed with a pressing screw (33), both sides of the inside of the through slot (311) are provided with an axle slot (321), and the axle slot (321) is provided with a supporting axle (32).

7. The rocker arm machining tooling fixture of claim 6, wherein: The supporting axle (32) is inserted into the axle slot (321) on one side and extends into the axle slot (321) on the other side through the pressing rod (31), and the pressing rod (31) can rotate around the supporting axle (32) as the axis.

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