Tooling fixture for positioning machining center

Abstract

The utility model discloses a tool fixture for machining center positioning belongs to machining equipment technical field, including mounting bracket, adjusting assembly and install the positioning assembly on adjusting assembly, adjusting assembly can adjust the overall height of positioning assembly, positioning assembly includes lead screw, drive motor, two sets of positioning plate, two sets of positioning rod, cylinder and clamping plate, and it has symmetrical screw rotation through drive motor drive lead screw, drives two sets of positioning plate and positioning rod synchronous movement with the meshing of lead screw, realizes the quick centering positioning to two workpieces, after positioning, cylinder drives clamping plate movement, and the workpiece is pressed on the positioning rod. The device solves the positioning cumbersome, low efficiency problem when batch processing multiple workpieces in the prior art, has the beneficial effect of one-time synchronous positioning and clamping two workpieces, high clamping efficiency, good processing consistency.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a tooling fixture for positioning a machining center. Background Technology

[0002] In modern manufacturing, machining centers, as highly efficient and precise automated processing equipment, directly impact a company's production efficiency through their effective utilization rate. Tooling fixtures, as indispensable auxiliary devices in the machining process, play a crucial role in fully leveraging the capabilities of the machining center, particularly in the efficiency and precision of their clamping process.

[0003] When mass-producing similar parts, minimizing non-cutting auxiliary time becomes crucial for improving overall production efficiency. Traditional operations typically involve clamping one workpiece at a time on the machining center's worktable, completing the machining, and then unloading and replacing it with the next, repeating this cycle. During this process, each workpiece requires independent alignment, tool setting, and clamping—a series of repetitive operations that consume significant machine tool downtime. This equipment idleness due to repeated clamping is particularly pronounced when single-piece machining times are short.

[0004] Existing implementation methods mostly involve simply arranging multiple independent fixtures on the worktable. While this reduces the number of tool changes, the positioning datum for each workpiece remains independently determined. The operator needs to position and clamp each workpiece individually, which not only fails to fundamentally solve the problem of time-consuming repetitive positioning operations, but also easily introduces positional errors between different workpieces due to multiple independent manual positioning operations. This makes it difficult to ensure the high consistency of the datum of the entire batch of parts, thus affecting the final product quality.

[0005] Therefore, this utility model proposes a tooling fixture for positioning in a machining center to address the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a tooling fixture for positioning in a machining center, which aims to improve the problems of cumbersome and time-consuming positioning operations and difficulty in ensuring the consistency of positioning references for multiple workpieces when performing batch processing of multiple workpieces in the existing tooling fixture.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a tooling fixture for positioning a machining center, comprising a mounting frame, an adjustment component mounted on the mounting frame, and a positioning component mounted on the adjustment component. The adjustment component includes a movable plate slidably connected to the side wall of the mounting frame, and a slide rail pair for locking the position of the movable plate. The positioning assembly includes a guide rail, a lead screw, a drive motor, two sets of positioning plates, two sets of positioning rods, a cylinder, and a clamping plate. The guide rail is horizontally mounted on the movable plate, and the lead screw is parallel to the guide rail and rotatably mounted on the movable plate. The output shaft of the drive motor is connected to one end of the lead screw. Both sets of positioning plates are threadedly engaged with the lead screw and slidably connected to the guide rail. Each set of positioning rods is fixedly connected to its corresponding positioning plate. The drive motor drives the lead screw to rotate, achieving synchronous or disjoint movement of the two sets of positioning rods. Simultaneously, the cylinder body is fixedly mounted on the movable plate, and the clamping plate, driven by the piston rod of the cylinder, presses the workpiece against the positioning rods, thus forming an integrated device combining synchronous positioning and clamping functions. Preferably, the two ends of the lead screw are a left-hand thread and a right-hand thread, respectively, and the two sets of positioning plates mesh with the left-hand thread and the right-hand thread, respectively; Preferably, the clamping plate has guide holes for the two sets of positioning rods to pass through; Preferably, the positioning assembly further includes a support plate, the piston rod end of the cylinder is connected to the support plate, and the support plate is fixedly connected to the clamping plate; Preferably, the direction of movement of the clamping plate is parallel to the axis of the lead screw; Preferably, the positioning assembly further includes a fixing frame and a bearing seat, and the lead screw is rotatably mounted on the movable plate via the fixing frame and the bearing seat; Preferably, the drive motor is fixed to the movable plate by bolts; Preferably, the clamping plate is arranged perpendicular to the positioning plate.

[0008] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that when batch processing multiple workpieces, it is necessary to clamp and position them one by one, which is cumbersome, inefficient and difficult to ensure the consistency of the positioning reference of multiple workpieces. By setting a lead screw with symmetrical threads driven by a single drive motor to synchronously drive two sets of positioning mechanisms to move towards or away from each other, the present invention achieves fast, synchronous and high-precision centering and positioning of two workpieces, which significantly improves production efficiency and processing consistency.

[0009] 2. This utility model, by setting a movable plate that is slidably connected to the mounting frame, and mounting the entire positioning component on the movable plate, constitutes an adjustable component with vertically adjustable height. This solves the defects of traditional tooling fixtures, which have a limited range of applications and are difficult to adapt to the processing needs of workpieces of different thicknesses. It achieves flexible adjustment of the overall working height of the fixture and enhances the versatility and applicability of the device.

[0010] 3. This utility model integrates the synchronous positioning mechanism with the pneumatic clamping mechanism, and makes the movement direction of the clamping plate match the positioning direction. This solves the problem that the positioning and clamping actions may interfere with each other in the traditional clamping process, or that the clamping force may cause the workpiece to shift, affecting the final machining accuracy. It achieves the technical effect of accurate positioning and reliable and stable clamping, ensuring that the workpiece can remain stable when subjected to strong cutting forces, thereby guaranteeing the machining quality. Attached Figure Description

[0011] Figure 1 This is a perspective view of a positioning fixture for a machining center proposed in this utility model; Figure 2 This is a schematic diagram of a clamping plate for a positioning fixture in a machining center, as proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the slide rail pair of a positioning tooling fixture for a machining center proposed in this utility model.

[0012] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Positioning assembly; 201. Cylinder; 202. Support plate; 203. Clamping plate; 204. Guide rail; 205. Bearing seat; 206. Motor; 207. Fixing bracket; 208. Lead screw; 209. Positioning plate; 210. Positioning rod; 3. Adjustment assembly; 301. Slide rail pair; 302. Moving plate. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail below.

[0014] Reference Figures 1-4 This utility model provides an embodiment of a tooling fixture for positioning a machining center, including a mounting frame 1, an adjustment component 3, and a positioning component 2. The adjustment component 3 is mounted on the mounting frame 1, and the positioning component 2 is mounted on the adjustment component 3. The mounting frame 1 serves as the basic load-bearing structure of the entire device, providing a stable mounting platform for other components. The adjustment component 3 serves as a height adjustment mechanism, including a moving plate 302 and a slide rail pair 301. The moving plate 302 moves up and down through a sliding connection with the side wall of the mounting frame 1. The slide rail pair 301 is used to lock the position of the moving plate 302 after it is adjusted to a suitable height. The entire positioning component 2 is fixed on the moving plate 302, thereby achieving flexible adaptation to the machining height. The positioning assembly 2 includes a guide rail 204, a lead screw 208, a drive motor 206, two sets of positioning plates 209, two sets of positioning rods 210, a cylinder 201, and a clamping plate 203. The guide rail 204 is horizontally arranged on the surface of the moving plate 302. The lead screw 208 is arranged parallel to the guide rail 204 and is fixed to the moving plate 302 by a rotatable mounting. The output shaft of the drive motor 206 is connected to one end of the lead screw 208 to provide power for the rotation of the lead screw 208. Both sets of positioning plates 209 are engaged with the threads of the lead screw 208 through an internal thread structure, and the bottoms of the two sets of positioning plates 209 are also slidably connected. On the guide rail 204, this structure allows the two sets of positioning plates 209 to move synchronously along the length of the guide rail 204 when the lead screw 208 rotates. Each set of positioning rods 210 is fixedly connected to the corresponding positioning plate 209 and moves synchronously with the positioning plate 209 to directly abut against the reference surface of the workpiece. As for the clamping mechanism, the cylinder body of the cylinder 201 is fixedly installed on the moving plate 302, and the clamping plate 203 is connected to the piston rod of the cylinder 201, so that it can be driven by the piston rod of the cylinder 201 to generate reciprocating motion. When the clamping plate 203 moves, it is used to press the workpiece onto the positioning rod 210 that has been positioned, forming a stable clamping state. It also includes a fixing plate 504, which is hinged to the first drive rod 503. By cooperating with a preset support point on the base 1, the fixing plate 504 provides auxiliary support and guidance for the movement trajectory of the first drive rod 503 during transmission. After the cutting operation is completed, to facilitate the cleaning of the generated aluminum alloy waste, such as... Figure 1 and Figure 4 As shown, the aluminum alloy rod cutting and fixing fixture with anti-slip positioning groove also includes a collection component 6. The collection component 6 is set on the side of the base 1 for collecting waste. The collection component 6 is a manual cleaning mechanism. Its specific structure includes a push plate 603, a push rod 602 and a handle 601. In terms of assembly, the push rod 602 is fixedly connected to the rear end of the push plate 603, and the handle 601 is fixedly connected to the end of the push rod 602 away from the push plate 603. This structure allows the operator to easily push the push rod 602 by holding the handle 601, thereby driving the push plate 603 to move in the waste collection area of ​​the base 1, so as to push the scattered cutting waste to the designated position and keep the working environment clean. The structure of the lead screw 208 is key to achieving synchronous positioning. The two ends of the lead screw 208 are left-hand threads and right-hand threads, respectively, and the lead screw 208 is rotatably mounted on the moving plate 302 through the fixing bracket 207 and the bearing seat 205. The two sets of positioning plates 209 are respectively engaged with the left-hand threads and right-hand threads of the lead screw 208 through internal threaded holes, and the bottom of the two sets of positioning plates 209 are also slidably connected to the guide rail 204. This sliding fit structure driven by symmetrical threads and guided by the guide rail 204 ensures that when the drive motor 206 drives the lead screw 208 to rotate, the two sets of positioning plates 209 will inevitably move synchronously towards or away from each other along the guide rail 204, thereby ensuring that the two sets of positioning rods 210 fixed on the positioning plates 209 can be accurately aligned with the reference surfaces of the two workpieces, achieving high-precision synchronous positioning. After positioning is completed, the clamping mechanism starts to work. The clamping plate 203 is set perpendicular to the positioning plate 209, and the clamping plate 203 has guide holes for the two sets of positioning rods 210 to pass through. This setting ensures that the clamping plate 203 will not interfere with the positioning rods 210 when it moves. The movement direction of the clamping plate 203 is parallel to the axis of the lead screw 208 and is driven by the cylinder 201. It applies pressure to the workpiece in the horizontal direction, pushes the workpiece towards and presses it against the positioning rods 210. In order to achieve stable driving, the positioning assembly 2 also includes a support plate 202. The piston rod end of the cylinder 201 is connected to the support plate 202, and the support plate 202 is then fixedly connected to the clamping plate 203 to form a stable thrust transmission structure. The positioning assembly 2 also includes a fixing frame 207 and a bearing seat 205. The lead screw 208 is rotatably mounted on the movable plate 302 via the fixing frame 207 and the bearing seat 205. In order to achieve synchronous opposite or opposite movement of the two sets of positioning plates 209, the two ends of the lead screw 208 are left-hand threads and right-hand threads, respectively. The two sets of positioning plates 209 are respectively engaged with the left-hand threads and right-hand threads of the lead screw 208 through internal threaded holes. In order to ensure reliable transmission of driving power, the drive motor 206 is fixed to the movable plate 302 by bolts. The clamping plate 203 is perpendicular to the surface of the positioning plate 209, and the clamping plate 203 has guide holes for the two sets of positioning rods 210 to pass through, so as to avoid collision during the clamping movement. The movement direction of the clamping plate 203 is parallel to the axis of the lead screw 208, ensuring that a pure horizontal thrust is applied to the workpiece. In order to form a stable force transmission structure, the positioning assembly 2 also includes a support plate 202. The piston rod end of the cylinder 201 is connected to the support plate 202. The support plate 202 and the clamping plate 203 are fixedly connected to each other, so that the thrust generated by the cylinder 201 is completely transmitted to the clamping plate 203.

[0015] Working principle: Before clamping, the height is first adjusted. By unlocking the slide rail pair 301 in the adjustment component 3, the moving plate 302, which is equipped with the entire positioning component 2, can slide up and down along the side wall of the mounting frame 1. When the moving plate 302 is adjusted to a suitable height for processing the current workpiece, the slide rail pair 301 is locked again to complete the setting of the working height of the entire fixture. When it is necessary to position the workpiece, the drive motor 206 starts, and the power of the drive motor 206 is transmitted to the lead screw 208 through the transmission connection, so that the lead screw 208 rotates stably under the support of the fixed frame 207 and the bearing seat 205. Since the lead screw 208 has a structure with left-hand threads and right-hand threads at both ends, and the two sets of positioning plates 209 are respectively engaged with the left-hand and right-hand threads, the rotation of the lead screw 208 will drive the two sets of positioning plates 209 to move synchronously towards each other along the length direction of the guide rail 204. The two sets of positioning rods 210 fixed on the two sets of positioning plates 209 also move synchronously, and finally abut against the positioning reference surface of the two workpieces respectively, completing the synchronous and precise centering of the two workpieces. After positioning is completed, the clamping mechanism starts working. The cylinder 201 is activated, and the piston rod of the cylinder 201 extends, pushing the support plate 202 and clamping plate 203, which are fixedly connected to it, to move in a direction parallel to the axis of the lead screw 208. During the movement of the clamping plate 203, the two sets of positioning rods 210 pass through the guide holes opened on the clamping plate 203. Finally, the clamping plate 203 firmly presses the two workpieces onto the stationary positioning rods 210, thereby achieving a stable clamping of the two workpieces and preparing for subsequent processing steps.

Claims

1. A tooling fixture for positioning a machining center, comprising a mounting frame (1), an adjusting component (3), and a positioning component (2), wherein the adjusting component (3) is mounted on the mounting frame (1), and the positioning component (2) is mounted on the adjusting component (3), the adjusting component (3) comprising a moving plate (302) and a slide rail pair (301), the moving plate (302) being slidably connected to the side wall of the mounting frame (1), and the slide rail pair (301) being used to lock the position of the moving plate (302), characterized in that... ； The positioning assembly (2) includes a guide rail (204), a lead screw (208), a drive motor (206), two sets of positioning plates (209), two sets of positioning rods (210), a cylinder (201), and a clamping plate (203). The guide rail (204) is horizontally arranged on the moving plate (302), and the lead screw (208) is arranged parallel to the guide rail (204) and rotatably mounted on the moving plate (302). The output shaft of the drive motor (206) is connected to the lead screw (208). One end of the transmission is connected, and both sets of positioning plates (209) are threadedly engaged with the lead screw (208) and slidably connected to the guide rail (204). Each set of positioning rods (210) is fixedly connected to its corresponding positioning plate (209). The cylinder body of the cylinder (201) is fixedly installed on the moving plate (302). The clamping plate (203) is driven by the piston rod of the cylinder (201). The clamping plate (203) is used to press the workpiece onto the positioning rod (210).

2. The positioning fixture for a machining center according to claim 1, characterized in that: The two ends of the lead screw (208) are left-hand threads and right-hand threads, respectively, and the two sets of positioning plates (209) are respectively engaged with the left-hand threads and the right-hand threads.

3. The positioning fixture for a machining center according to claim 1, characterized in that: The clamping plate (203) has guide holes for the two sets of positioning rods (210) to pass through.

4. The positioning fixture for a machining center according to claim 1, characterized in that: The positioning component (2) also includes a support plate (202), the piston rod end of the cylinder (201) is connected to the support plate (202), and the support plate (202) is fixedly connected to the clamping plate (203).

5. A positioning fixture for a machining center according to claim 1, characterized in that: The direction of movement of the clamping plate (203) is parallel to the axis of the lead screw (208).

6. A positioning fixture for a machining center according to claim 1, characterized in that: The positioning component (2) further includes a fixing frame (207) and a bearing seat (205); the lead screw (208) is rotatably mounted on the movable plate (302) via the fixing frame (207) and the bearing seat (205).

7. A positioning fixture for a machining center according to claim 1, characterized in that: The drive motor (206) is fixed to the movable plate (302) by bolts.

8. A positioning fixture for a machining center according to claim 1, characterized in that: The clamping plate (203) is perpendicular to the positioning plate (209).

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