A fixture positioning and mounting mechanism for a CNC lathe

Abstract

The utility model discloses a fixture positioning installation mechanism for numerical control lathe belongs to numerical control lathe technical field, and its technical scheme main points include built -in support base and mounting bracket, the mounting bracket sets up in built -in support base top rear side, the front side of mounting bracket is provided with the connecting frame, and the fixture installation structure is set up, and the clamping block is clamped into the embedded groove and makes the positioning groove cooperate with the positioning rod, realizes the stable installation of clamping block, when installing the fixture, the fixture bottom clamping groove is connected with the clamping block top, and the preliminary realization fixture accurate positioning reduces the machining accuracy deviation caused by installation error, simultaneously, the compression block is connected with the connecting frame through the fixed bolt, and the fixture is pressed down, realizes the compression fixed installation of fixture, guarantees its absolute firmness while significantly reduces the risk of fixture falling, prolongs the service life of fixture, improves workpiece processing consistency and surface finish.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, and in particular to a fixture positioning and mounting mechanism for CNC lathes. Background Technology

[0002] In the field of CNC lathe applications, fixtures are key components that directly participate in cutting processes. The accuracy and stability of their positioning and installation directly affect the workpiece's machining quality, machining efficiency, and the equipment's service life. A reliable fixture positioning and installation mechanism can ensure that the fixture maintains a precise position during high-speed cutting, reduce vibration and offset, thereby improving machining accuracy and surface finish. At the same time, it can also reduce the fixture's wear rate and extend its service life.

[0003] However, most existing CNC lathe fixtures are installed and positioned using a planar extrusion method. Although this method is simple in structure and convenient to install, it has many drawbacks. On the one hand, the connection strength of the planar extrusion positioning installation method is limited. Under the high-speed operation of the CNC lathe and the action of complex cutting forces, the fixture is prone to loosening and displacement, resulting in a decrease in machining accuracy. In severe cases, it may even cause the fixture to fall off, causing equipment failure and safety accidents. On the other hand, the positioning accuracy is difficult to guarantee. During the installation process, the fixture may not reach the ideal installation position due to manual operation or component tolerances, affecting the consistency and stability of machining and hindering efficient production.

[0004] Therefore, a fixture positioning and mounting mechanism for CNC lathes is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a fixture positioning and installation mechanism for CNC lathes, which solves the problem that existing CNC lathe fixtures are mostly installed and positioned using a planar extrusion method. Although this method is simple in structure and convenient to install, it has many drawbacks. On the one hand, the connection strength of the planar extrusion positioning and installation method is limited. Under the high-speed operation and complex cutting forces of the CNC lathe, the fixture is prone to loosening and displacement, resulting in a decrease in machining accuracy. In severe cases, it may even cause the fixture to fall off, causing equipment failure and safety accidents. On the other hand, the positioning accuracy is difficult to guarantee. During the installation process, the fixture may not reach the ideal installation position due to manual operation or component tolerances, affecting the consistency and stability of machining and hindering efficient production.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fixture positioning and mounting mechanism for a CNC lathe, comprising a built-in support base and a mounting frame, wherein the mounting frame is disposed on the rear side of the top of the built-in support base, a connecting frame is disposed on the front side of the mounting frame, an adjustment and fixing structure is disposed between the connecting frame and the mounting frame, and a fixture mounting structure is disposed on the front side of the connecting frame;

[0007] The clamp mounting structure includes a groove on the front top of the connecting frame, a locking block is engaged inside the groove, a positioning groove is provided at the bottom of the locking block, a positioning rod is fixedly connected inside the groove, the positioning rod is inserted into the positioning groove, a clamp is provided on the top of the locking block, a locking groove is provided at the bottom of the clamp, the locking groove engages with the locking block, a pressing block is provided on the top of the clamp, a slot is provided on the top of the pressing block, a fixing bolt is provided inside the slot, and the bottom of the fixing bolt is threaded to the top of the connecting frame.

[0008] Preferably, the adjustment and fixing structure includes connecting screw holes at the four corners of the rear side of the connecting frame, and elliptical adjustment holes are provided at the four corners of the front side of the interior of the mounting frame.

[0009] Preferably, a connecting bolt is provided inside the elliptical adjusting hole, and the front side of the connecting bolt is threaded into the connecting screw hole. Adjusting screw holes are provided on both sides of the top of the connecting frame.

[0010] Preferably, a support block is bolted to the front side of the top of the mounting bracket, and adjusting bolts are provided on both sides of the front side of the top of the support block, with the bottom of the adjusting bolts threaded into the interior of the adjusting screw hole.

[0011] Preferably, a reinforcing groove is provided on the front side of the top of the connecting frame, and the interior of the reinforcing groove is engaged with the rear side of the bottom of the clamping block.

[0012] Preferably, the bottom of the clamping block has a concave shape in the middle, which is engaged with the front side of the top of the connecting frame.

[0013] Preferably, both sides of the top of the support block are threaded with clamping bolts, and the clamping bolts are located at the top of the connecting frame.

[0014] Preferably, the fixing bolt, connecting bolt, adjusting bolt and clamping bolt are all internal hexagon bolts with cylindrical heads and regular hexagonal grooves inside.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application sets up a fixture installation structure, which inserts the clamping block into the groove and makes the positioning groove cooperate with the positioning rod to achieve stable installation of the clamping block. When installing the fixture, the bottom groove of the fixture engages with the top of the clamping block, initially achieving accurate positioning of the fixture and reducing the deviation in machining accuracy caused by installation errors. At the same time, the clamping block is connected to the connecting frame through fixing bolts, pressing down on the fixture to achieve clamping and fixing of the fixture. While ensuring its absolute firmness, it significantly reduces the risk of fixture falling off, extends the service life of the fixture, and improves the consistency of workpiece machining and surface finish.

[0017] 2. By setting an adjustable fixing structure, this application can flexibly adjust the relative position of the connecting frame and the mounting frame according to different processing requirements, ensuring the precise matching of the fixture installation height and angle, and guaranteeing the connection strength. It forms a stable double fixing system with the fixture mounting structure, which can effectively resist the impact of complex cutting forces even under high-speed cutting conditions, prevent the fixture from loosening and shifting, and ensure the reliability and stability of equipment operation. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the fixture positioning and mounting mechanism for CNC lathes according to the present invention;

[0019] Figure 2 This is a structural diagram of the built-in support base of this utility model;

[0020] Figure 3 This is a structural diagram of the mounting bracket of this utility model;

[0021] Figure 4 This is a structural diagram of the clamp mounting structure of this utility model;

[0022] Figure 5 This is a structural diagram of the adjusting and fixing structure of this utility model;

[0023] Figure 6 This is a structural diagram of the connecting frame of this utility model;

[0024] Figure 7 This is a structural diagram of the clamping block of this utility model.

[0025] In the diagram: 1. Built-in support base; 2. Mounting bracket; 3. Connecting bracket; 4. Adjustment and fixing structure; 41. Connecting screw hole; 42. Elliptical adjustment hole; 43. Connecting bolt; 44. Adjusting screw hole; 45. Support block; 46. Adjusting bolt; 5. Fixture mounting structure; 51. Slot; 52. Locking block; 53. Positioning slot; 54. Positioning rod; 55. Fixture; 56. Locking slot; 57. Pressing block; 58. Hole and slot; 59. Fixing bolt; 6. Reinforcing slot; 7. Pressing bolt. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-7 The present invention provides the following technical solution:

[0028] A fixture positioning and mounting mechanism for a CNC lathe includes an internal support base 1 and a mounting frame 2. The mounting frame 2 is located on the rear side of the top of the internal support base 1. A connecting frame 3 is provided on the front side of the mounting frame 2. An adjustment and fixing structure 4 is provided between the connecting frame 3 and the mounting frame 2. A fixture mounting structure 5 is provided on the front side of the connecting frame 3.

[0029] The clamp mounting structure 5 includes a groove 51 on the front side of the top of the connecting frame 3. A locking block 52 is engaged inside the groove 51. A positioning groove 53 is provided at the bottom of the locking block 52. A positioning rod 54 is fixedly connected inside the groove 51 and inserted into the positioning groove 53. A clamp 55 is provided on the top of the locking block 52. A locking groove 56 is provided at the bottom of the clamp 55 and engages with the locking block 52. A pressing block 57 is provided on the top of the clamp 55. A hole 58 is provided on the top of the pressing block 57. A fixing bolt 59 is provided inside the hole 58. The bottom of the fixing bolt 59 is threaded to the top of the connecting frame 3.

[0030] In this embodiment: A built-in support base 1, mounting bracket 2, connecting bracket 3, adjustment and fixing structure 4, and fixture mounting structure 5 are provided. The built-in support base 1 is stably installed inside the bottom side of the CNC lathe housing, providing a rigid support foundation for the whole. The mounting bracket 2 is fixed to its top rear side with bolts to ensure vertical positioning accuracy. The connecting bracket 3 on the front side of the mounting bracket 2 can be finely adjusted in height by adjusting the fixing structure 4, thereby meeting the installation and processing needs of the fixture 55 at different heights. After adjustment, it is fixed to form a rigid whole. The fixture mounting structure 5 on the front side of the connecting bracket 3 fixes the fixture 55 through a multi-stage positioning mechanism, first embedding the locking block 52. The groove 51 allows the positioning groove 53 to be inserted into the positioning rod 54 to complete the initial positioning. The bottom slot 56 of the fixture 55 is engaged with the top boss of the block 52 to form a secondary positioning. Finally, the clamping block 57 covers the top of the fixture 55. The fixing bolt 59 passes through the hole slot 58 and is threaded to the connecting frame 3 for rigid clamping. The stop fit between the groove 51 and the block 52, the pin positioning between the positioning rod 54 and the positioning groove 53, the convex and concave engagement between the slot 56 and the block 52, and the bolt preload of the clamping block 57 constitute a quadruple anti-loosening structure, which effectively resists the alternating load of high-speed cutting, ensures the stability of the positioning accuracy of the fixture 55, and significantly reduces the risk of the fixture 55 falling off, thus extending the service life of the fixture 55.

[0031] Specifically, such as Figure 4 As shown, the adjusting and fixing structure 4 includes connecting screw holes 41 at the four corners of the rear side of the connecting frame 3, and elliptical adjusting holes 42 are provided at the four corners of the front side inside the mounting frame 2.

[0032] Specifically, such as Figure 4As shown, a connecting bolt 43 is provided inside the elliptical adjusting hole 42. The front thread of the connecting bolt 43 is connected to the inside of the connecting screw hole 41. Adjusting screw holes 44 are provided on both sides of the top of the connecting bracket 3.

[0033] Specifically, such as Figure 4 As shown, a support block 45 is bolted to the front side of the top of the mounting bracket 2. Adjusting bolts 46 are provided on both sides of the front side of the top of the support block 45. The bottom of the adjusting bolt 46 is threaded into the inside of the adjusting screw hole 44.

[0034] In this embodiment: by setting the adjustment and fixing structure 4, when the position of the connecting frame 3 needs to be adjusted, the connecting bolts 43 in the four corner connecting screw holes 41 on the rear side of the connecting frame 3 and the elliptical adjustment holes 42 of the mounting frame 2 can be loosened. The long axis space of the elliptical adjustment holes 42 is used to realize the vertical movement of the connecting frame 3. At the same time, the adjusting bolts 46 on the front support block 45 at the top of the mounting frame 2 are rotated to make them cooperate with the adjusting screw holes 44 on both sides of the top of the connecting frame 3. The height position of the connecting frame 3 can be further precisely controlled. After the adjustment is completed, the connecting bolts 43 and the adjusting bolts 46 are tightened as needed to make the connecting frame 3 and the mounting frame 2 firmly connected. At the same time, it meets the installation and processing use of the fixture 55 at different heights.

[0035] Specifically, such as Figure 5 As shown, a reinforcing groove 6 is provided on the front side of the top of the connecting frame 3, and the interior of the reinforcing groove 6 is engaged with the rear side of the bottom of the clamping block 57.

[0036] Specifically, such as Figure 6 As shown, the bottom center of the clamping block 57 is concave, which is snapped onto the front side of the top of the connecting bracket 3.

[0037] In this embodiment: by setting the reinforcing groove 6, the reinforcing groove 6 on the front side of the top of the connecting frame 3 is engaged with the rear side of the bottom of the clamping block 57. Combined with the concave shape in the middle of the bottom of the clamping block 57 and the engagement design on the front side of the top of the connecting frame 3, when the clamp 55 is installed, it can not only help to position the clamping block 57, but also disperse the pressure applied by the fixing bolt 59, thereby enhancing the fixing stability of the clamp 55.

[0038] Specifically, such as Figure 5 As shown, both sides of the top of the support block 45 are threaded with clamping bolts 7, which are located on the top of the connecting frame 3.

[0039] Specifically, such as Figure 3 , Figure 4 , Figure 5 As shown, the fixing bolt 59, connecting bolt 43, adjusting bolt 46 and clamping bolt 7 are all internal hex bolts with cylindrical heads and regular hexagonal grooves inside.

[0040] In this embodiment: the connecting frame 3 is further tightened by the clamping bolts 7 set on both sides of the top of the support block 45, which work together with the adjusting and fixing structure 4 to improve the overall rigidity. In addition, the fixing bolt 59, connecting bolt 43, adjusting bolt 46 and clamping bolt 7 are all made of internal hexagon bolts. Their cylindrical head and regular hexagonal groove design are compatible with internal hexagon wrench operation, which can provide greater torque, ensure the reliability of bolt tightening, and reduce the risk of loosening caused by vibration. Thus, during the high-speed cutting process of CNC lathe, the accuracy and strength of the fixture 55 after installation are effectively guaranteed.

[0041] Working principle: In the use of the fixture positioning and mounting mechanism of the CNC lathe, firstly, the built-in support base 1 is firmly installed on the bottom side inside the CNC lathe chassis, and the mounting bracket 2 is fixed to its top rear side with bolts to ensure vertical positioning accuracy. When it is necessary to install the fixture 55, if it is necessary to adjust the installation height of the fixture 55, the connecting bolts 43 in the four corner connecting screw holes 41 on the rear side of the connecting bracket 3 and the elliptical adjustment holes 42 of the mounting bracket 2 can be loosened. The long axis space of the elliptical adjustment holes 42 is used to realize the vertical movement of the connecting bracket 3, while rotating the mounting bracket 55. Adjusting bolts 46 on the front support block 45 at the top of mounting bracket 2 are aligned with adjusting screw holes 44 on both sides of the top of connecting bracket 3 to further precisely control the height position of connecting bracket 3. After adjustment, tighten connecting bolts 43 and adjusting bolts 46 to securely connect connecting bracket 3 to mounting bracket 2. Next, install clamp 55 by inserting the locking block 52 into the groove 51 on the front top of connecting bracket 3, so that the positioning groove 53 at the bottom of locking block 52 engages with the positioning rod 54 in the groove 51, completing the initial positioning of locking block 52. Then, the locking groove 54 at the bottom of clamp 55 is... 6 engages with the top boss of the clamping block 52 to achieve secondary positioning of the clamp 55. Finally, the clamping block 57 covers the top of the clamp 55, and the fixing bolt 59 passes through the hole groove 58 of the clamping block 57 and is threaded to the connecting frame 3 to rigidly clamp the clamp 55. During this process, the reinforcing groove 6 on the front side of the top of the connecting frame 3 engages with the rear side of the bottom of the clamping block 57. This, combined with the concave shape in the middle of the bottom of the clamping block 57 and the engagement design on the front side of the top of the connecting frame 3, assists in positioning the clamping block 57 while dispersing the pressure applied by the fixing bolt 59, thus strengthening the clamp 55. 5. For improved stability, the clamping bolts 7 on both sides of the top of the support block 45 further tighten the connecting frame 3, working together to enhance overall rigidity. In addition, the fixing bolt 59, connecting bolt 43, adjusting bolt 46 and clamping bolt 7 are all made of internal hexagonal bolts. Their cylindrical head and regular hexagonal groove design are compatible with internal hexagonal wrench operation, providing greater torque. This ensures that during high-speed cutting on CNC lathes, the fixture 55 and its mounting components can effectively resist alternating loads, maintain high-precision positioning and high-strength connection, and guarantee the stability and reliability of machining.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture positioning and mounting mechanism for a CNC lathe, comprising a built-in support base (1) and a mounting bracket (2), characterized in that: The mounting bracket (2) is located on the rear side of the top of the built-in support base (1). A connecting bracket (3) is provided on the front side of the mounting bracket (2). An adjustment and fixing structure (4) is provided between the connecting bracket (3) and the mounting bracket (2). A clamp mounting structure (5) is provided on the front side of the connecting bracket (3). The clamp mounting structure (5) includes a groove (51) opened on the front side of the top of the connecting frame (3). A locking block (52) is engaged inside the groove (51). A positioning groove (53) is opened at the bottom of the locking block (52). A positioning rod (54) is fixedly connected inside the groove (51). The positioning rod (54) is inserted into the positioning groove (53). A clamp (55) is provided on the top of the locking block (52). A slot (56) is opened at the bottom of the clamp (55). The slot (56) engages with the locking block (52). A pressing block (57) is provided on the top of the clamp (55). A hole (58) is opened on the top of the pressing block (57). A fixing bolt (59) is provided inside the hole (58). The bottom of the fixing bolt (59) is threadedly connected to the top of the connecting frame (3).

2. The fixture positioning and mounting mechanism for a CNC lathe according to claim 1, characterized in that: The adjusting and fixing structure (4) includes connecting screw holes (41) at the four corners of the rear side of the connecting frame (3), and elliptical adjusting holes (42) are provided at the four corners of the front side of the mounting frame (2).

3. A fixture positioning and mounting mechanism for a CNC lathe according to claim 2, characterized in that: The elliptical adjustment hole (42) is provided with a connecting bolt (43), the front side of the connecting bolt (43) is threaded into the connecting screw hole (41), and the top of the connecting frame (3) is provided with adjustment screw holes (44) on both sides.

4. A fixture positioning and mounting mechanism for a CNC lathe according to claim 3, characterized in that: The mounting bracket (2) is bolted to the front side of the top with a support block (45). The support block (45) has adjusting bolts (46) on both sides of the front side of the top. The bottom of the adjusting bolts (46) is threaded into the interior of the adjusting screw hole (44).

5. A fixture positioning and mounting mechanism for a CNC lathe according to claim 1, characterized in that: The front side of the top of the connecting frame (3) is provided with a reinforcing groove (6), and the interior of the reinforcing groove (6) is engaged with the rear side of the bottom of the clamping block (57).

6. A fixture positioning and mounting mechanism for a CNC lathe according to claim 1, characterized in that: The bottom center of the clamping block (57) is concave, and it is snapped onto the front side of the top of the connecting frame (3).

7. A fixture positioning and mounting mechanism for a CNC lathe according to claim 4, characterized in that: Both sides of the top of the support block (45) are threaded with clamping bolts (7), which are located on the top of the connecting frame (3).

8. A fixture positioning and mounting mechanism for a CNC lathe according to claim 1, characterized in that: The fixing bolt (59), connecting bolt (43), adjusting bolt (46) and clamping bolt (7) are all internal hexagon bolts with cylindrical heads and regular hexagonal grooves inside.

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