A quick positioning fixture for turning inserts

Abstract

The application discloses a quick positioning clamp for a turning blade and relates to the technical field of turning blade clamps, which comprises a long frame plate sliding horizontally between two groups of main guide rails, a closed ring groove arranged in the long frame plate, a plurality of groups of steel balls arranged in the closed ring groove, a clamping assembly movably arranged on the surface of the long frame plate and capable of adapting to the shape of the blade when moving, and a locking assembly for completing the final clamping state by extruding the steel balls. The application discloses a method of clamping the turning blade by horizontally approaching from both sides, which is adopted by traditional clamps. Regardless of the concave surface or the convex surface of the turning blade, the plurality of groups of clamping rods almost simultaneously apply nearly equal force to the surface of the turning blade, so that the risk of excessive extrusion of the convex surface of the turning blade is greatly reduced, and the qualified rate of the turning blade products is improved.

Description

Technical Field

[0001] This invention relates to the field of turning tool clamping technology, specifically a quick positioning clamping fixture for turning tools. Background Technology

[0002] In the field of modern metal cutting, turning inserts, as core tools for achieving efficient and precise cutting, are widely used in key industrial sectors such as automobile manufacturing, aerospace, mold processing, and general machinery. The performance of the inserts directly affects cutting efficiency, machining accuracy, and workpiece surface quality, thus placing extremely high demands on the machining quality of the inserts themselves. To meet different cutting conditions and material processing requirements, the structural design of turning inserts has become increasingly diversified. In addition to traditional straight-face inserts (whose locating and working surfaces are mostly planar structures with relatively regular shapes), special inserts with complex curved or corrugated structures—i.e., curved inserts—have been developed. These curved corrugated inserts do not refer to the shape of the cutting edge, but rather that the working or locating surfaces of the insert body are designed with specific curved contours or corrugated textures to adapt to special chip removal, heat dissipation, or machining requirements (commonly used straight-face inserts produce straight-line cutting patterns, while some require the use of curved inserts).

[0003] Currently, the fixtures used in machining turning inserts are generally composed of two straight clamping plates. However, this is clearly unsuitable for curved inserts with special shapes. The industry uses flexible fixtures to clamp and fix curved inserts, mainly to reduce the hard compression damage caused by the point-contact clamping of traditional straight clamping plates and turning inserts. The flexible fixture first approaches each other from both sides of the turning insert. When it contacts the convex surface of the turning insert, the flexible components (such as telescopic rods or air bladders) in the corresponding positions of the flexible fixture are blocked by the convex surface. As the flexible fixture continues to move, the flexible components in other positions of the flexible fixture will gradually come into contact with the concave surface of the turning insert, and finally make the entire flexible component tightly fit with the curved surface of the turning insert, relying on the friction between them to clamp and fix the turning insert.

[0004] Although existing flexible clamps have significantly reduced the risk of hard compression on turning inserts compared to traditional straight clamping plates, when part of the flexible component in the flexible clamp is already in contact with the convex surface of the turning insert, while the rest of the flexible component is not yet in close contact with the concave surface of the turning insert, as the flexible clamp is further advanced, the part of the flexible component in contact with the convex surface of the turning insert will still exert a certain degree of compression on the convex surface of the turning insert (in order to ensure the stability of the clamping, the clamp needs to be pushed as far as possible, rather than letting the flexible part of the clamp just contact the cutting face. Therefore, under strong pushing, it is inevitable that the convex surface of the turning insert will be excessively compressed). The curved shape of the turning insert itself has slightly lower rigidity, and it is easy to deform and be damaged under excessive compression. Currently, the clamps on the market all have the problem of uneven stress during the clamping process of curved turning inserts. The industry urgently needs clamps that can be well adapted to the machining of curved turning inserts.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing rapid positioning fixtures used for turning inserts. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a rapid positioning fixture for turning inserts, thereby solving the problem of uneven stress in the clamping process of curved turning inserts in the aforementioned background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rapid positioning fixture for turning inserts, comprising a machine tool, a main guide rail symmetrically fixed on the upper surface of the machine tool, and a first groove formed on the surface of the main guide rail, and further comprising: The long frame plate slides horizontally between the two sets of main guide rails, the closed annular groove is opened inside the long frame plate, several sets of steel balls are rolled in the closed annular groove, the clamping assembly is movably set on the surface of the long frame plate and can adapt to the shape of the blade when moving, and the locking assembly completes the final clamping state by squeezing the steel balls. The clamping assembly includes a base that slides on the upper surface of a long frame plate via an I-shaped slide rail, a rotating cylinder that is rotatably mounted on the upper surface of the base, and a clamping bar that slides horizontally in the middle of the rotating cylinder via a slide rail. The locking assembly includes a first insert block movably inserted at both ends of the long frame plate, a connecting block movably inserted vertically at the bottom of the base, a second insert block fixed at the bottom of the connecting block, a distance control cover fixed at the top of the connecting block, and a ball fixed at the bottom of the clamping rod.

[0008] Preferably, limit sliders are fixed at both ends of one set of the long frame plates; A second sliding groove is provided at one end of the main guide rail; The limiting slider slides inside the second slide groove.

[0009] Preferably, the long frame plate is provided with several groups arranged in a linear array; Each pair of adjacent long frame plates is hinged together by a connecting rod.

[0010] Preferably, the clamping rods are provided in several groups; Two sets of clamping bars are symmetrically arranged in the middle of each set of rotating cylinders; The surface of the clamping rod is covered with a rubber pad.

[0011] Preferably, the locking assembly further includes an outer frame fixed to the upper surface of the other end of the main guide rail; A pressure plate is slidably provided in the middle of the outer frame; The pressure plate is located directly above the first chute; The bottom surface of the pressure plate is covered with an anti-slip silicone pad; The top surface of the outer frame is threaded with fastening bolts; The bottom end of the fastening bolt passes through the top surface of the outer frame and is rotatably inserted into the pressure plate.

[0012] Preferably, the first insertion block is provided in several groups; The first insertion block slides horizontally inside the first sliding groove; The top surface of the first insertion block is covered with an anti-slip silicone pad; The lower ends of the first insertion block are set as inclined surfaces on both sides; The long frame plate has square grooves extending through both ends, and the width of the square grooves is smaller than the diameter of the steel ball. The dimensions of the square groove are adapted to the dimensions of the first insertion block, and the first insertion block slides horizontally longitudinally within the square groove.

[0013] Preferably, the closed annular groove is composed of two sets of parallel straight grooves and two sets of symmetrically arranged arc-shaped grooves; The junction between the straight groove and the arc groove is smooth and without sharp edges; The dimensions of the closed annular groove are adapted to the diameter of the steel ball.

[0014] Preferably, the upper surface of the long frame plate is provided with a third sliding groove; The width of the third chute is smaller than the diameter of the steel ball; The widths of the second insert block and the connecting block are both adapted to the width of the third slide groove.

[0015] Preferably, the two sides of the second insertion block are set as smooth bevels; The second insert block passes through the third slide groove and is inserted between several sets of steel balls.

[0016] Preferably, both the distance control cover and the ball slide inside the base and the rotating cylinder; The distance control cover is configured as a spherical structure with an arc-shaped cross-section; The inner wall of the distance control cover contacts the outer wall of the ball, and both contact surfaces are polished. The two sets of beads are symmetrically distributed inside each set of distance control covers.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention abandons the traditional method of clamping turning inserts by horizontally approaching each other on both sides. Instead, it pulls several sets of long frame plates, causing several sets of clamping bars to move adaptively to the corresponding positions according to the curved shape of the turning insert in a relaxed state. Then, by squeezing the steel balls, the two sets of symmetrical clamping bars adaptively and tightly adhere to both sides of the turning insert, thus achieving clamping and fixing of the turning insert. Compared with traditional flexible clamps, this invention provides more uniform clamping stress on the concave and convex surfaces of the turning insert. The several sets of clamping bars apply almost equal force to the surface of the turning insert at almost the same time, whether at the concave or convex surfaces (there may be slight deviations during operation, making it difficult to achieve perfect synchronization, but these deviations are very small and will not cause deformation of the turning insert, so they can be ignored). There is no need to worry about excessive stress on the convex surface of the turning insert, which greatly reduces the risk of excessive compression on the convex surface of the turning insert and helps to improve the yield of finished turning inserts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the initial state structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the working state of the present invention.

[0021] Figure 4 This is a partial structural diagram of the present invention.

[0022] Figure 5 This is a schematic diagram of the long frame plate structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the connecting rod structure of the present invention.

[0024] Figure 7 This is a schematic diagram of the closed annular groove and steel ball structure of the present invention.

[0025] Figure 8 This is a schematic diagram of the partially exploded structure of the present invention.

[0026] Figure 9This is a cross-sectional structural diagram of the base and rotating cylinder of the present invention.

[0027] Figure 10 This is a front view of the cross-sectional structure of the distance control cover of the present invention.

[0028] Figure 11 This is a partial cross-sectional front view of the structure of the present invention.

[0029] Figure 12 This is a side view of the fastening bolts and pressure plate of the present invention.

[0030] Figure 13 This is a schematic diagram of the structure of the pressure plate and the first insertion block of the present invention.

[0031] Figure 14 This is a schematic diagram of the structure of the long frame plate and the first insert block of the present invention.

[0032] In the diagram: 1. Machine tool; 2. Main guide rail; 3. Outer frame; 4. Fastening bolt; 5. Pressure plate; 6. Long frame plate; 7. No. 1 slide rail; 8. No. 1 insert block; 9. No. 2 slide rail; 10. Limiting slider; 11. Connecting rod; 12. Closed ring groove; 13. Steel ball; 14. Base; 15. Rotary cylinder; 16. Ball bearing; 17. Clamping bar; 18. No. 3 slide rail; 19. Connecting block; 20. Distance control cover; 21. No. 2 insert block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 14 The present invention provides a technical solution: a rapid positioning fixture for turning inserts, comprising a machine tool 1, a main guide rail 2 symmetrically fixed on the upper surface of the machine tool 1, and a first groove 7 formed on the surface of the main guide rail 2, and further comprising: The long frame plate 6 slides horizontally between the two sets of main guide rails 2, the closed ring groove 12 is opened inside the long frame plate 6, several sets of steel balls 13 are rolled in the closed ring groove 12, the clamping assembly is movably set on the surface of the long frame plate 6 and can adapt to the shape of the blade when moving, and the locking assembly completes the final clamping state by squeezing the steel balls 13. In specific implementations, machine tool 1 includes, but is not limited to, a loading platform, a multi-axial movement assembly, and a processing assembly. (See attached diagram.) Figure 1The illustrations are for illustrative purposes only. In reality, the model and type of machine tool 1 can be selected according to processing requirements. The clamping components and locking components involved in this invention are all located on the loading platform of machine tool 1.

[0035] The clamping assembly includes a base 14 that slides on the upper surface of the long frame plate 6 via an I-shaped slide rail, a rotating cylinder 15 that is rotatably disposed on the upper surface of the base 14, and a clamping rod 17 that slides horizontally in the middle of the rotating cylinder 15 via a slide rail. In practical implementation, the base 14 only slides horizontally on the surface of the long frame plate 6 and does not detach from the long frame plate 6. The movement of the base 14 can adapt to the position of the concave and convex surfaces of the turning insert. The rotating drum 15 moves synchronously with the base 14, and the rotating drum 15 can rotate independently of the base 14. The clamping bar 17 rotates synchronously with the rotating drum 15 and moves synchronously with the rotating drum 15. When the clamping bar 17 moves along the curved surface of the turning insert, it can adaptively and flexibly change its direction and position, so that the clamping bar 17 can maintain a symmetrical state on both sides of the insert as much as possible. Therefore, during the later clamping, a relatively symmetrical and balanced force is applied to the corresponding position of the turning insert. It should be noted that, as shown in the attached... Figure 9 As shown, the slide rail between the clamping rod 17 and the rotating cylinder 15 adopts a square structure (it can also be replaced by an I-shaped slide rail, etc.) to ensure that the clamping rod 17 can only move horizontally and is not affected by other external forces (especially the squeezing force of the ball 16) to move up and down.

[0036] The locking assembly includes a first insert 8 that is movably inserted at both ends of the long frame plate 6, a connecting block 19 that is movably inserted at the bottom of the base 14 in a vertical position, a second insert 21 that is fixed at the bottom of the connecting block 19, a distance control cover 20 that is fixed at the top of the connecting block 19, and a ball 16 that is fixed at the bottom of the clamping rod 17.

[0037] Limit sliders 10 are fixed at both ends of one set of long frame plates 6; A second sliding groove 9 is provided at one end of the main guide rail 2; The limit slider 10 slides inside the second slide groove 9.

[0038] In specific implementation, with attachment Figure 4 From the perspective shown, only the rightmost set of long frame plates 6 has limit sliders 10 fixed at both ends, while the leftmost part of the main guide rail 2 is in a closed state. To accommodate the use of most machine tools in the industry, the long frame plates 6 can be folded up as shown in the attached figure when not in use. Figure 2 The configuration shown facilitates routine maintenance and cleaning of machine tool 1. The long frame plate 6 can be pulled into the work area during operation. Figure 3At the position shown, the design of the second slide 9 limits the maximum length that several sets of long frame plates 6 can be stretched, in order to prevent several sets of long frame plates 6 from being overstretched, which would make it difficult for the connecting rod 11 to bend back (the connecting rod 11 cannot be in a 90-degree perpendicular state to the long frame plate 6, otherwise the connecting rod 11 will be difficult to bend back).

[0039] The long frame plate 6 is provided with several groups arranged in a linear array; Each pair of adjacent long frame plates 6 are hinged together by a connecting rod 11.

[0040] In specific implementation, as shown in the appendix Figure 6 As shown, the connecting rod 11 in this invention consists of two sets of cross-hinged long rods, and the two ends of each set of long rods slide on the surfaces of two adjacent sets of long frame plates 6 via slide rails. In fact, the connecting rod 11 can also be replaced with other common hinged connecting rods on the market. The main purpose of the connecting rod 11 is to connect several sets of long frame plates 6 to each other and pull them together. As a common prior art, this invention is only shown in simple illustrations and descriptions. The shape and length of the connecting rod 11 can be selected according to the specific requirements.

[0041] The clamping rods 17 are provided in several groups; Two sets of clamping bars 17 are symmetrically arranged in the middle of each set of rotating cylinders 15; The surface of the clamping rod 17 is covered with a rubber pad.

[0042] In practice, each pair of symmetrical clamping bars 17 clamps the turning insert in the middle. The rubber pad design can prevent hard friction damage between the clamping bars 17 and the insert, and can also enhance the friction between the clamping bars 17 and the insert, making it less likely for the insert to slip out from the middle of the clamping bars 17.

[0043] The locking assembly also includes an outer frame 3 fixed to the upper surface of the other end of the main guide rail 2; A pressure plate 5 is slidably installed in the middle of the outer frame 3; The pressure plate 5 is located directly above the first slide groove 7; The bottom surface of pressure plate 5 is covered with an anti-slip silicone pad; A fastening bolt 4 is threaded through the top surface of the outer frame 3; The bottom end of the fastening bolt 4 passes through the top surface of the outer frame 3 and is inserted into the pressure plate 5 by rotation.

[0044] In practice, by rotating the fastening bolt 4, the pressure plate 5 can move up and down with the fastening bolt 4. When the pressure plate 5 moves down, it can squeeze the first insert block 8, so that it can be inserted between several sets of steel balls 13 to complete the locking operation. When the pressure plate 5 moves up, it will gradually separate from the first insert block 8. The first insert block 8 loses its strong squeezing force on the steel balls 13, thus achieving the purpose of unlocking. In addition, multiple sets of threaded holes can be pre-set on the top surface of the outer frame 3 to add fastening bolts 4 to meet different usage requirements.

[0045] The number 8 insertion block has several groups; The first insert block 8 slides horizontally inside the first slide groove 7; The top surface of the No. 1 insert block 8 has an anti-slip silicone pad attached; In practice, when the top surface of the first insert 8 is in close contact with the bottom surface of the pressure plate 5, the anti-slip silicone pad on the contact surface of the two can increase the friction between them, so that the first insert 8 will no longer slide easily, thereby fixing the position of the long frame plate 6.

[0046] The lower ends of the first insert block 8 are set as bevels on both sides; Square grooves are provided at both ends of the long frame plate 6, and the width of the square grooves is smaller than the diameter of the steel ball 13. The size of the square groove is adapted to the size of the first insertion block 8, and the first insertion block 8 slides horizontally in the square groove.

[0047] In practice, when the lower end of the first insert block 8 is inserted between several groups of steel balls 13, it will use its inclined surface to push the steel balls 13 to both sides. The first insert block 8 is restricted by the square groove and will not move laterally. Therefore, when the first insert block 8 gradually moves down, it will eventually push and tighten the several groups of steel balls 13, so that the steel balls 13 lose their space to move.

[0048] The closed annular groove 12 consists of two sets of parallel straight grooves and two sets of symmetrically arranged arc grooves; The junction between the straight groove and the curved groove is smooth and without sharp edges; The dimensions of the closed annular groove 12 are adapted to the diameter of the steel ball 13.

[0049] In specific implementation, several sets of steel balls 13 can move in a circular cycle inside the closed annular groove 12. Since one set of straight grooves needs to provide enough space for the movement of the second insertion block 21, another set of straight grooves is needed to provide space for the insertion of the first insertion block 8. The design of the closed annular groove 12 allows the first insertion block 8 and the second insertion block 21 to influence each other through the movement of several sets of steel balls 13 even if they do not move in the same straight groove. Specifically, when the first insertion block 8 moves down, it will eventually push the second insertion block 21 up, and when the second insertion block 21 moves down, it will eventually push the first insertion block 8 up.

[0050] The upper surface of the long frame plate 6 is provided with three sliding grooves 18; The width of the third chute 18 is smaller than the diameter of the steel ball 13; The widths of the second insert block 21 and the connecting block 19 are both adapted to the width of the third slide groove 18.

[0051] In practice, the No. 3 slide 18 provides space for the movement of the No. 2 insert block 21 and the connecting block 19, and also allows the No. 2 insert block 21 and the connecting block 19 to move smoothly along a predetermined trajectory, and the steel ball 13 will not be squeezed out of the No. 3 slide 18.

[0052] The two sides of the second insertion block 21 are set as smooth bevels; After passing through the third slide groove 18, the second insert block 21 is inserted between several sets of steel balls 13.

[0053] In specific implementation, the inclined surface of the second insert block 21 can push the steel ball 13, so that when the device is not locked, the second insert block 21 can descend freely, so that the distance between the two sets of symmetrical clamping bars 17 can be greater than the width of the turning tool. This allows the two sets of symmetrical clamping bars 17 to move along the surface trajectory of the turning tool without excessive interference with the turning tool. When the first insert block 8 pushes the steel ball 13, and the steel ball 13 pushes the second insert block 21, the second insert block 21 can be forced to move upward, ultimately reducing the distance between the two sets of symmetrical clamping bars 17.

[0054] Both the distance control cover 20 and the ball 16 slide inside the base 14 and the rotating cylinder 15; The distance control cover 20 is configured as a spherical structure with an arc-shaped cross-section; The inner wall of the distance control cover 20 contacts the outer wall of the ball 16, and both contact surfaces are polished. Two groups of beads 16 are symmetrically distributed inside each group of distance control covers 20.

[0055] In specific implementation, the shape of the distance control cover 20 makes the distance from its center to both sides regular and gradually increasing. Based on this feature, the present invention can use the distance control cover 20 to squeeze the ball bearings 16 when it moves upward, so that the two sets of symmetrical ball bearings 16 can gradually approach each other, thereby adapting to the thickness of different turning tools.

[0056] Working principle: When using this quick positioning fixture for turning inserts, first insert one end of the turning insert to the far left (as shown in the attached image). Figure 1 To be continued Figure 5(From the perspective shown to distinguish left and right) Between two symmetrical sets of clamping bars 17 on a set of long frame plates 6, with the bottom of the cutting insert placed on the upper surface of the rotary drum 15, the long frame plates 6 are then pulled, causing several sets of long frame plates 6 to be stretched apart one after another. Note that the position of the cutting insert should not move significantly when pulling the long frame plates 6. One hand can hold the cutting insert while the other hand pulls the long frame plates 6 and moves the clamping bars 17, allowing one end of the cutting insert to pass through several sets of clamping bars 17 in sequence. Then, the leftmost set of long frame plates 6 is pulled horizontally along the main guide rail 2 until the total length of several sets of long frame plates 6 is greater than the length of the cutting insert. When the clamping bars 17 encounter the turning insert... When the surface is curved, the clamping bar 17 will move along the curved surface trajectory. Specifically, the clamping bar 17 drives the rotating cylinder 15 and the base 14 to move horizontally along the surface of the long frame plate 6 until the clamping bar 17 moves to the specific position of the curved surface of the turning tool. At the same time, the clamping bar 17 drives the rotating cylinder 15 to rotate, so that the two symmetrical sets of clamping bars 17 and the cutting tool can better adapt to the curved surface shape. The clamping bar 17 and the curved surface are less likely to have motion interference. It should be noted that the several sets of clamping bars 17 should be distributed as evenly as possible on the surface of the turning tool. This can be achieved by adjusting the position of each set of long frame plates 6 individually, which can make the turning tool be clamped more stably.

[0057] After the clamping rod 17 is positioned, directly rotate the fastening bolt 4 (the fastening bolts 4 on the same side should be turned synchronously, while the fastening bolts 4 on both sides can be turned asynchronously, and even after one side's fastening bolt 4 is tightened, the other side's fastening bolt 4 does not need to be turned). The fastening bolt 4 pushes the pressure plate 5 downward, and the pressure plate 5 pushes the first insertion block 8, so that the first insertion block 8 is gradually inserted between several sets of steel balls 13. Several sets of steel balls 13 are pushed to both sides of the first insertion block 8, and several sets of steel balls 13 are simultaneously forced to squeeze towards the second insertion block 21, pushing the second insertion block 21 upward. The second insertion block 21 pushes the distance control cover 20 upward. The two symmetrical sets of balls 16 are squeezed by the distance control cover 20, which drives the two symmetrical sets of clamping rods. Move the 17-alignment until the two symmetrical clamping bars 17 tightly clamp the turning tool. In this way, the control cover 20 and the second insert 21 can no longer move upward, and the several sets of steel balls 13 also lose their space of movement due to the obstruction of the second insert 21 and the first insert 8. The second insert 21 is fixed in the predetermined position and will no longer move up or down. Finally, the clamping bars 17 maintain the state of tightly clamping the tool, and the first insert 8 and the pressure plate 5 will no longer slide under the action of strong friction. The position of the long frame plate 6 is thus fixed. At the same time, under the restriction of the turning tool, the first slide groove 7 will no longer move horizontally. After completing all the operations, you can try shaking the turning tool to confirm that it will not shake before performing grinding, polishing and other processing operations.

[0058] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick positioning fixture for turning inserts, comprising a machine tool (1), a main guide rail (2) symmetrically fixed to the upper surface of the machine tool (1), and a first groove (7) formed on the surface of the main guide rail (2), characterized in that, Also includes: The long frame plate (6) slides horizontally between the two sets of main guide rails (2), the closed ring groove (12) is opened inside the long frame plate (6), a number of steel balls (13) are rolled in the closed ring groove (12), the clamping assembly is movably set on the surface of the long frame plate (6) and can adapt to the shape of the blade when moving, and the locking assembly completes the final clamping state by squeezing the steel balls (13); The clamping assembly includes a base (14) that slides on the upper surface of the long frame plate (6) via an I-shaped slide rail, a rotating cylinder (15) that is rotatably disposed on the upper surface of the base (14), and a clamping rod (17) that slides horizontally in the middle of the rotating cylinder (15) via a slide rail. The locking assembly includes a first insert (8) movably inserted at both ends of the long frame plate (6), a connecting block (19) movably inserted vertically at the bottom of the base (14), a second insert (21) fixed at the bottom of the connecting block (19), a distance control cover (20) fixed at the top of the connecting block (19), and a ball (16) fixed at the bottom of the clamping rod (17).

2. A quick positioning fixture for turning inserts according to claim 1, characterized in that: Limiting sliders (10) are fixed at both ends of one of the long frame plates (6). A second sliding groove (9) is provided on one side of the main guide rail (2); The limiting slider (10) slides inside the second slide groove (9).

3. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The long frame plate (6) is provided with several groups arranged in a linear array; Each pair of adjacent long frame plates (6) are hinged together by a connecting rod (11).

4. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The clamping rod (17) is provided in several groups; Two sets of clamping bars (17) are symmetrically arranged in the middle of each set of rotating cylinders (15); The surface of the clamping rod (17) is covered with a rubber pad.

5. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The locking assembly also includes an outer frame (3) fixed to the upper surface of the other end of the main guide rail (2); A pressure plate (5) is slidably provided in the middle of the outer frame (3); The pressure plate (5) is located directly above the first slide groove (7); The bottom surface of the pressure plate (5) is covered with an anti-slip silicone pad; The top surface of the outer frame (3) is threaded with fastening bolts (4); The bottom end of the fastening bolt (4) passes through the top surface of the outer frame (3) and is rotatably inserted into the pressure plate (5).

6. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The first insertion block (8) is provided in several groups; The first insert (8) slides horizontally inside the first slide groove (7); The top surface of the first insert (8) is covered with an anti-slip silicone pad; The lower ends of the first insert (8) are set as inclined surfaces on both sides; The long frame plate (6) has square grooves through both ends, and the width of the square grooves is smaller than the diameter of the steel ball (13). The size of the square groove is adapted to the size of the first insert (8), and the first insert (8) slides horizontally in the square groove.

7. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The closed annular groove (12) consists of two sets of parallel straight grooves and two sets of symmetrically arranged arc grooves; The junction between the straight groove and the arc groove is smooth and without sharp edges; The dimensions of the closed annular groove (12) are adapted to the diameter of the steel ball (13).

8. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The upper surface of the long frame plate (6) is provided with three sliding grooves (18); The width of the third chute (18) is smaller than the diameter of the steel ball (13); The widths of the second insert (21) and the connecting block (19) are both adapted to the width of the third slide (18).

9. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The two sides of the second insert (21) are set as smooth inclined surfaces; The second insert (21) passes through the third slide (18) and is inserted between several sets of steel balls (13).

10. A quick positioning fixture for turning inserts according to claim 1, characterized in that: The distance control cover (20) and the ball (16) both slide inside the base (14) and the rotating cylinder (15); The distance control cover (20) is configured as a spherical structure with an arc-shaped cross-section; The inner wall of the distance control cover (20) is in contact with the outer wall of the ball (16), and both contact surfaces are polished. Two sets of the aforementioned beads (16) are symmetrically distributed inside each set of distance control covers (20).

Images