Positioning tool for rocker processing

Abstract

The present disclosure relates to the technical field of positioning tooling, and one embodiment of the present disclosure provides a positioning tooling for rocker machining, which comprises a placing mold, clamping screws, a pressing assembly and a lateral fixing assembly. The placing mold is fixedly installed at the top end of a machining table. Threaded holes are formed on both sides of the placing mold, and a placing groove is formed in the placing mold. The clamping screws are provided in plurality. The clamping screws are respectively threadedly installed in the threaded holes. The pressing assembly is arranged on the placing mold and is used for pressing the top end of the rocker. The lateral fixing assembly is arranged on the side of the placing mold and is used for fixing the side of the rocker. Through the above technical solution, the technical problem of unstable clamping during the positioning and clamping of the rocker is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of positioning tooling technology, and more specifically, to a positioning tooling for rocker arm machining. Background Technology

[0002] A joystick is a common mechanical component, usually used to control or operate equipment. Common materials used in manufacturing joysticks include metals, plastics, and composite materials. For metal joysticks, machining methods such as turning, milling, and drilling are required to shape them into the required form.

[0003] When machining a rocker arm, a positioning device is needed to clamp and fix the rocker arm to ensure that it is accurately fixed on the machine tool table during machining. This also makes the machining area more accurate relative to the cutting tool. The positioning device can also prevent the rocker arm from shifting or shaking during machining.

[0004] When positioning and clamping a rocker arm, a fixture or clamping plate is usually installed on the worktable. The clamping plate is moved to fit against both sides of the rocker arm and clamp it in place. However, existing positioning fixtures are generally difficult to clamp and fix the rocker arm from all four sides. They only fit and fix the two sides of the rocker arm. Since the surface of the rocker arm is usually relatively smooth, if too much force is applied to the rocker arm during processing, it is easy for the rocker arm to detach from the clamping plate, resulting in unstable positioning and clamping. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a positioning fixture for rocker arm processing, which solves the technical problem in the prior art that it is difficult to fix the rocker arm around its perimeter when positioning and clamping it, resulting in unstable clamping during processing.

[0006] According to one aspect, at least one embodiment of this disclosure provides a positioning fixture for processing a rocker arm, including a processing table, a first placement mold and a second placement mold, clamping screws, a pressing assembly and a lateral fixing assembly. The first placement mold and the second placement mold are both fixedly installed on the top of the processing table. The first placement mold and the second placement mold have a plurality of threaded holes on both sides, and the first placement mold and the second placement mold have placement grooves inside. A plurality of clamping screws are provided, and the plurality of clamping screws are respectively threaded into the plurality of threaded holes. The pressing assembly is provided on the first placement mold and the second placement mold for pressing the top of the rocker arm. The lateral fixing assembly is provided on the side of the first placement mold for fixing the side of the rocker arm.

[0007] Furthermore, the clamping assembly includes a clamping screw and a clamping block. The clamping screw is threadedly installed on the first placement mold and the second placement mold. The clamping block is fixedly installed on the clamping screw, and a U-shaped groove for placing the clamping screw is formed on the side of the clamping block.

[0008] Furthermore, the lateral fixing assembly includes a movable screw and a top block, the movable screw being rotatably mounted on the side of the second placement mold, and the top block being mounted on the end of the movable screw.

[0009] Furthermore, it also includes a lifting assembly, which includes a second movable screw, a lifting block, and a fixing assembly. The second movable screw is rotatably mounted on the side of the second placement mold, the lifting block is mounted on the end of the second movable screw, and the fixing assembly is disposed at the top of the placement mold.

[0010] Furthermore, the fixing assembly includes a fixing frame, a stabilizing frame, a sliding rod, two bolts, and a fixing plate. The fixing frame is fixedly installed on the top of the second placement mold, the stabilizing frame is fixedly installed on the top of the fixing frame, and the stabilizing frame has a threaded hole on its side. There are two sliding rods, both of which are slidably installed on the stabilizing frame, and the sliding rods have threaded holes on their sides. The two bolts are threaded into the threaded holes, and the fixing plate is fixedly installed on the bottom of the two sliding rods.

[0011] Furthermore, the length and width of the placement slots of the first placement mold and the second placement mold are both greater than the length and width of the rocker arm.

[0012] Furthermore, when the bottom end of the clamping screw is in contact with the top end of the first placement mold and the second placement mold, the bottom end of the clamping block is in contact with the top end of the rocker arm.

[0013] Furthermore, the sides of the lifting block are set to be curved.

[0014] Furthermore, when the top of the lifting block contacts the bottom of the rocker arm and the threaded hole of the slide rod is at the same horizontal position as the threaded hole of the stabilizing bracket, the bottom of the fixing plate is in contact with the top of the rocker arm.

[0015] Furthermore, the lifting block and the top block are located in the placement slots of the second placement mold and the first placement mold, respectively.

[0016] The beneficial effects of the embodiments disclosed herein are as follows: 1. In this disclosure, when clamping and positioning the rocker, it is placed into the placement slots of the first placement mold and the second placement mold, which can place it in the cavity, reducing its range of movement, and the rocker is fixed in the placement slot by the threaded clamping screws on both sides of the placement mold.

[0017] 2. In this disclosure, after the joystick is fixed in the placement slot, the top of the joystick and the other side can be clamped and fixed again by the cooperation of the clamping component and the lateral fixing component. By clamping and fixing the four sides of the joystick, it can be more stable in the placement slot.

[0018] In summary, this positioning fixture, through the cooperation of the placement mold, clamping screw, pressing component and lateral fixing component, can clamp and fix the top and sides of the rocker arm when positioning it, so that the rocker arm can be stably placed in the placement groove during processing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the structure of the first placement mold, the lateral fixing component, the clamping component, and the lower pressure plate of this utility model in a bursting-opening arrangement; Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model; Figure 4 This is a schematic diagram of the structure of the second placement mold, the clamping component, and the lifting component of this utility model. Figure 5 This is a schematic diagram of the structure of the movable screw and the lifting block of this utility model. Figure 6 This is a schematic diagram of the structure of the clamping block of this utility model; Figure 7 This is a schematic diagram of the structure of the clamping screw of this utility model in an explosive state.

[0021] In the diagram: 1. Processing table; 2. First placement mold; 3. Clamping screw; 4. Pressing screw; 6. Pressing block; 7. Moving screw one; 8. Top block; 9. Moving screw two; 10. Lifting block; 11. Fixing frame; 12. Stabilizing frame; 13. Slide rod; 14. Bolt two; 15. Fixing plate; 16. Lower pressure plate; 17. Second placement mold; 21. Ejector screw; 22. Positioning tapered pin; 23. Connecting bolt; 2103. Rear clamping surface; 2204. Front clamping surface; 2201. Middle end surface; 2202. Arc-shaped top end surface; 2301. Optical axis surface; 2302. Rear end surface. Detailed Implementation

[0022] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0023] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0024] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0025] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Example 1, as Figure 1 , Figure 2 and Figure 6 As shown, it illustrates a positioning fixture for rocker arm machining according to an embodiment of the present disclosure, including a machining table 1, as... Figure 1 As shown, it also includes a first placement mold 2 and a second placement mold 17, clamping screws 3, a pressing assembly and a lateral fixing assembly. The first placement mold 2 and the second placement mold 17 are both fixedly installed on the top of the processing table 1. Several threaded holes are opened on both sides of the first placement mold 2 and the second placement mold 17, and placement grooves are opened inside the first placement mold 2 and the second placement mold 17. Several clamping screws 3 are provided, and the several clamping screws 3 are respectively threaded into the several threaded holes. The pressing assembly is set inside the first placement mold 2 and the second placement mold 17 for pressing the top of the rocker arm. The lateral fixing assembly is set on the side of the first placement mold 2 for fixing the side of the rocker arm.

[0029] When positioning and clamping the rocker arm, first place the rocker arm into the placement groove of the first placement mold 2 or the second placement mold 17. Because the length and width of the placement groove of the first placement mold 2 or the second placement mold 17 are greater than the length and width of the rocker arm, it can be placed and removed smoothly. Furthermore, the clamping screw 3 can be threaded into the first placement mold 2 to hold the rocker arm in place. It should be noted that the clamping screw 3 has a threaded blind hole at its front end and a tapered positioning pin with a center hole at its front end. The diameter of the positioning pin is connected to the tapered pin of the first placement mold 2 via a connecting screw. When holding the rocker arm in place, the top of the rocker arm can be pressed and fixed by the clamping assembly. Figure 2As shown, the clamping assembly includes a clamping screw 4 and a clamping block 6. The clamping screw 4 is threadedly installed in the first placement mold 2 and the second placement mold 17. The clamping block 6 is fixedly installed on the clamping screw 4, and a U-shaped groove for placing the clamping screw 4 is provided on the side of the clamping block 6. Specifically, when clamping the rocker arm, it is only necessary to screw the clamping screw 4 into the bottom end of the threaded hole of the first placement mold 2. At this time, the bottom end of the clamping block 6 contacts the top end of the rocker arm, thereby pressing it down. At this time, the other side of the rocker arm can be further fixed by the lateral fixing assembly, such as... Figure 2 As shown, the lateral fixing assembly includes a movable screw 7 and a top block 8. The movable screw 7 is rotatably mounted on the side of the first placement mold 2, and the top block 8 is mounted on the end of the movable screw 7. Specifically, since the top block 8 is located in the placement groove of the first placement mold 2, by rotating the movable screw 7, the top block 8, which is threaded onto the end of the movable screw 7, moves forward under the rotation of the movable screw 7, thereby contacting the side of the rocker arm. It should be noted that the movable screw 7 is rotatably mounted on the side of the first placement mold 2 via a bearing, and the movable screw 7... The threaded connection between 7 and top block 8 is the same as that between reciprocating screw and screw nut. It should be added that when top block 8 contacts and presses against the side of rocker arm, in order to prevent top block 8 from "moving" up and down when it is tightened, the lower pressure plate 16 can be detachably installed on the top of the second placement mold 17 by hexagonal internal bolts to block the top of top block 8. The front end of the moving screw 7 has a T-shaped structure design, which cooperates with the T-shaped groove at the tail of the wedge-shaped top block 8. After processing, the wedge-shaped top block 8 is disengaged from the rocker arm by reversing the moving screw 7.

[0030] Working principle: When positioning and clamping the joystick, firstly, the joystick is placed into the placement groove of the first placement mold 2 or the second placement mold 17. Then, several clamping screws 3 are threaded into the side of the first placement mold 2 to clamp and fix both sides of the joystick. Then, the clamping screw 4 is threaded to the top of the first placement mold 2 through bolt 1. At this time, the bottom end of the clamping block 6 is attached to the top of the joystick to fix the top of the joystick. Finally, the moving screw 7 is rotated, and the top block 8 moves forward under the rotation of the moving screw 7 to attach to the side of the joystick. At this time, both the side and the top of the joystick are clamped and fixed, making it stable.

[0031] During processing, Figure 1The clamping body is mainly machined with a φ16mm hole. The clamping screw 3 passes through the positioning tapered pin on the side of the first placement mold 2 and is tightened. The rear end of the clamping screw 3 is a set screw. After the clamping screw 3 passes through the positioning tapered pin, it is tightened onto the set screw. The surface of the clamping screw 3 is a smooth axial surface. The length is designed to be slightly longer than the total length of the positioning tapered pin by 1mm. The set screws are symmetrically designed on both sides of the first placement mold 2. After tightening, it ensures that the inner end face of the rocker arm is close to the side end face of the rocker arm, realizing the centering of the left and right sides of the rocker arm and the center positioning of the pin hole. After the clamping block 6 passes through the bolt, it presses the rocker arm into the placement mold, completing the positioning of 1 axis + 2 end faces.

[0032] Example 2, as Figure 3 , Figure 4 and Figure 5 As shown, to prevent the rocker arm from deforming when the tool is pressed down during machining, a lifting assembly can be used to lift one end of the rocker arm. The lifting assembly also includes, for example... Figure 4As shown, the lifting assembly includes a second movable screw 9, a lifting block 10, and a fixing assembly. The second movable screw 9 is rotatably mounted on the side of the second placement mold 17. The lifting block 10 is mounted on the end of the second movable screw 9. The fixing assembly is located at the top of the second placement mold 17 and includes a fixing frame 11, a stabilizing frame 12, a sliding rod 13, a bolt 14, and a fixing plate 15. The fixing frame 11 is fixedly mounted on the top of the second placement mold 17, and the stabilizing frame 12 is fixedly mounted on the top of the fixing frame 11. The stabilizing frame 12 has a threaded hole on its side. There are two sliding rods 13, both of which are slidably mounted on the stabilizing frame 12. The sliding rods 13 have threaded holes on their sides, and the bolt 14 is threaded into the threaded holes. The fixing plate 15 is fixedly mounted on the bottom of the two sliding rods 13. Specifically, since the lifting block 10 is located in the placement groove of the second placement mold 17, rotating the second movable screw 9 will move the lifting block 10 forward. It should be noted that the connection between the second movable screw 9 and the lifting block 10 is... The connection method is the same as that of the moving screw 7 and the top block 8. The side of the lifting block 10 is set to be arc-shaped, which fits against the side of the rocker arm and then lifts it up. After lifting, in order to prevent poor stability during processing, the fixing plate 15 is moved down to fit against the rocker arm by sliding the slide rod 13. Then, the bolt 14 is threaded into the threaded holes of the slide rod 13 and the stabilizing frame 12. Because the top of the lifting block 10 contacts the bottom of the rocker arm and the threaded holes of the slide rod 13 and the stabilizing frame 12 are at the same level, the bottom of the fixing plate 15 fits against the top of the rocker arm. Therefore, the rocker arm can still be clamped and fixed after it is lifted. It should be added that the bottom of the fixing plate 15 and the clamping block 6 are both equipped with rubber pads, which can increase the friction and protect the top and side of the rocker arm. This prevents the fixing plate 15 and the side of the top block 8 from directly contacting the rocker arm and causing friction. The stabilizing frame 12 can fix the rigidity of the rocker arm during processing, thereby improving the processing quality. The lifting block 10 can provide support on the lower side during processing.

[0033] Working principle: such as Figure 3 As shown, before processing, the second moving screw 9 is rotated to move the lifting block 10 forward. The side of the lifting block 10 is then placed against the side of the rocker arm and lifted. Then, the sliding rod 13 is slid down to place the fixing plate 15 against the rocker arm. Then, the bolt 14 is threaded into the threaded holes of the sliding rod 13 and the stabilizing bracket 12 to further fix the rocker arm.

[0034] like Figure 7As shown, it is necessary to further explain the clamping screw 3. The connecting bolt 23 passes through the positioning tapered pin 22 and is tightened onto the set screw 21. The length of the optical axis surface 2301 is designed to be slightly longer than the total length of the positioning tapered pin 22 by 1mm. After the rear end face 2302 is tightened onto the set screw 21, a gap of 0.5mm is ensured between the rear clamping surface 2103 and the front clamping surface 2204. The middle end face 2201 of the clamping screw 3 rotates along the internal thread of the threaded hole on the side of the first placement mold 2. The set screw 21 is threadedly connected to the threaded hole on the side of the first placement mold 2. The arc-shaped top end face 2202 is designed with a 60° conical surface, which forms a conical positioning with the rocker arm hole opening at a 60° chamfer. After tightening, it ensures that the inner end face of the rocker arm is close to the side end face of the placement groove of the first placement mold 2, thereby achieving centering of the left and right sides of the rocker arm and center positioning of the pin hole.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A positioning fixture for rocker arm machining, comprising a machining table (1), characterized in that, Also includes: The first placement mold (2) and the second placement mold (17) are both fixedly installed on the top of the processing table (1). The first placement mold (2) and the second placement mold (17) are provided with several threaded holes on both sides, and placement grooves are provided inside the first placement mold (2) and the second placement mold (17). Clamping screws (3), a plurality of clamping screws (3) are provided, and the plurality of clamping screws (3) are respectively threaded into the plurality of threaded holes; A clamping assembly is disposed on the first placement mold (2) and the second placement mold (17) for clamping the top end of the rocker arm; A lateral fixing component is disposed on the side of the first placement mold (2) for fixing the side of the rocker arm.

2. The positioning fixture for rocker arm machining according to claim 1, characterized in that, The clamping assembly includes: A clamping screw (4) is threadedly installed in the first placement mold (2) and the second placement mold (17); A clamping block (6) is fixedly installed on the clamping screw (4), and a U-shaped groove for placing the clamping screw (4) is provided on the side of the clamping block (6).

3. The positioning fixture for rocker arm machining according to claim 2, characterized in that, The lateral fixing assembly includes: A movable screw (7) is rotatably mounted on the side of the first placement mold (2); Top block (8), which is installed at the end of the movable screw (7).

4. The positioning fixture for rocker arm machining according to claim 3, characterized in that, It also includes a lifting component, the lifting component comprising: The second movable screw (9) is rotatably mounted on the side of the second placement mold (17); Lifting block (10), which is installed at the end of the moving screw two (9); A fixing component is disposed at the top of the second placement mold (17).

5. A positioning fixture for rocker arm machining according to claim 4, characterized in that, The fixing component includes: A fixing frame (11) is fixedly installed on the top of the second placement mold (17); A stabilizing frame (12) is fixedly installed on the top of the fixing frame (11), and the side of the stabilizing frame (12) is provided with threaded holes; Slide rod (13), two slide rods (13) are provided, both slide rods (13) are slidably mounted on the stabilizer (12), and threaded holes are provided on the side of the slide rod (13); Bolt 2 (14), the bolt 2 (14) is threaded into the threaded hole; A fixing plate (15) is fixedly installed at the bottom end of the two slide bars (13).

6. A positioning fixture for rocker arm machining according to claim 5, characterized in that, The length and width of the placement slots of the first placement mold (2) and the second placement mold (17) are both greater than the length and width of the rocker arm.

7. A positioning fixture for rocker arm machining according to claim 6, characterized in that, When the bottom end of the clamping screw (4) is in contact with the top end of the first placement mold (2) and the second placement mold (17), the bottom end of the clamping block (6) is in contact with the top end of the rocker arm.

8. A positioning fixture for rocker arm machining according to claim 7, characterized in that, The side of the lifting block (10) is set to be arc-shaped.

9. A positioning fixture for rocker arm machining according to claim 8, characterized in that, When the top end of the lifting block (10) contacts the bottom end of the rocker arm and the threaded hole of the slide bar (13) and the threaded hole of the stabilizing bracket (12) are at the same horizontal position, the bottom end of the fixing plate (15) is in contact with the top end of the rocker arm.

10. A positioning fixture for rocker arm machining according to claim 9, characterized in that, The lifting block (10) and the top block (8) are located in the placement slots of the second placement mold (17) and the first placement mold (2), respectively.

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