Tool clamp for machining center curved surface die at high speed

Abstract

The tool clamp comprises a workbench, supporting blocks are attached to the two sides of the top end of the workbench, through threaded holes are formed in the two sides of each supporting block, fixing rods are in threaded connection with the interiors of the through threaded holes, baffles are fixed to the bottom ends of the fixing rods, and the baffles are fixed to the top ends of the baffles. A sleeve is fixed to the side wall of the supporting block, a pull rod is inserted into the sleeve, a limiting piece is arranged at the bottom end of the pull rod, a driving piece is arranged at the top end of the supporting block, a push plate is fixed to the inner side of the driving piece, and a limiting rod is fixed to the inner side of the push plate. The pull ring is arranged at the top end of the pull rod, manual operation of an operator is facilitated, the supporting block is rapidly positioned and fixed through cooperation of the pull rod, the spring and other components, complex tools are not needed, the installation and adjustment efficiency of the tool clamp is remarkably improved, the preparation time is shortened, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of machining center tooling, in particular to a tooling fixture for a high-speed machining center curved surface die. Background Art

[0002] In the field of high-speed machining centers, machining of curved workpieces is becoming increasingly common. Currently, traditional fixtures have many limitations when machining curved workpieces. On the one hand, the contact area between existing fixtures and curved workpieces is small, making it difficult to provide sufficient clamping force during machining, causing the workpiece to easily shift, affecting machining accuracy and surface quality, and even causing machining accidents. On the other hand, for complex workpieces with curved surfaces on both sides, traditional fixtures cannot effectively clamp them. Special fixtures are often required based on the specific shape of the workpiece, which not only increases production costs, but also extends production cycles, reduces production efficiency, and brings great inconvenience to actual production.

[0003] In addition, in order to achieve convenient adjustment and fixation of the fixture and the workbench, most of the current fixtures are tightened by screws and fixed by friction. However, during high-speed processing, due to the influence of factors such as cutting force and vibration, this fixing method can easily cause the fixture to shift in the fixed position, resulting in a decrease in the positioning accuracy of the workpiece, which in turn affects product quality and processing consistency, and is difficult to meet the modern manufacturing industry's demand for high-precision and high-efficiency processing. Therefore, it is urgent to develop a new type of tooling fixture that can effectively solve the above problems to improve the processing quality and efficiency of curved workpieces. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixture for a high-speed machining center curved surface mold to solve the problems raised in the above background technology.

[0005] The top end face of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel also is provided with an interlocking structure.

[0006] Preferably, both sides of the top of the workbench are provided with sliding grooves matching the baffle, and a clamping groove is provided above the sliding grooves.

[0007] Preferably, the limiting member includes a spring, which is sleeved on the outer wall of the bottom end of the pull rod, and the top of the spring is connected to the bottom end of the sleeve, a protrusion is fixed to the bottom end of the spring, and the protrusion is sleeved on the outer wall of the pull rod, a connecting rod is fixed on the inner side of the protrusion, a limiting block is fixed on the inner side of the connecting rod, and the limiting block is sleeved on the outer wall of the fixing rod.

[0008] Preferably, the limiting block is hexagonal in shape and matches the slot provided above the workbench.

[0009] Preferably, the driving member includes a threaded block, which is fixed to the top of the support block. The internal thread of the threaded block is connected to a first screw rod, and the inner side of the first screw rod is rotatably connected to the push plate through a bearing shaft.

[0010] Preferably, the clamping member includes a fixed block, which is fixed on the inner side of the limiting rod, the inner side of the fixed block is rotatably connected to a first rotating block, the inner side of the first rotating block is rotatably connected to a second rotating block, and the inner side of the second rotating block is fixed with a top block.

[0011] Preferably, the first rotating block and the second rotating block are semicircular in shape.

[0012] Preferably, an arc-shaped limiting groove is provided inside the fixed block, and the inside of the arc-shaped limiting groove is connected to the first rotating block via a sliding block.

[0013] Preferably, the clamping piece on the left is inclined outward, the clamping piece on the right is inclined inward, and the clamping piece on the right is slightly wider than the clamping piece on the left.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The workbench is made of high-strength cast iron, providing a solid and stable base platform for the entire fixture, ensuring stability during processing. The support block can slide freely in the T-shaped slot of the workbench through the cooperation of the fixed rod and the baffle, facilitating quick position adjustment. At the same time, the design of the spring, bump, connecting rod and limit block in the limiter enables the support block to be precisely positioned after installation, effectively preventing loosening and offset between the support block and the workbench during processing, and ensuring processing accuracy.

[0016] A pull ring is provided at the top of the pull rod to facilitate manual operation by the operator. The cooperation between the pull rod and the spring and other components enables the support block to be quickly positioned and fixed without the need for complex tools. This significantly improves the installation and adjustment efficiency of the fixture, shortens the preparation time, and improves the processing efficiency.

[0017] The cooperation between the first screw in the driving part, the threaded block and the push plate can accurately control the movement of the push plate, thereby driving the limit rod and the clamping part to move inward. The clamping part adopts a combined structure of a fixed block, a first rotating block, a second rotating block and a top block. The first rotating block and the second rotating block can be slightly rotated so that the top block can contact the curved surface of the workpiece over a large area, effectively improving the clamping stability and fit of the curved workpiece, avoiding displacement of the workpiece during processing, and ensuring the processing quality. The second screw at the center of the slot plate can adjust the position of the ball so that it can move to the center of the curved workpiece for support, thereby enhancing the adaptability of the tooling fixture to curved workpieces of different shapes and sizes; at the same time, the clamping parts designed with different inclination angles and widths on the left and right sides can meet the clamping needs of various curved workpieces, expand the scope of application of the tooling fixture, and improve equipment utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 for Figure 1 Detailed view of the connection structure from above;

[0020] Figure 3 for Figure 2 Enlarged detail view of the connection structure of the middle clamp;

[0021] Figure 4 for Figure 1 Detailed view of the connection structure in right section;

[0022] Figure 5 for Figure 4 Enlarged detail diagram of the connection structure of the middle limiter;

[0023] Figure 6 for Figure 5 Detailed diagram of the three-dimensional connection structure of the middle sleeve, tie rod and spring;

[0024] Figure 7 for Figure 5 Detailed view of the connection structure between the middle limit block and the connecting rod from above;

[0025] Figure 8 for Figure 1 Detailed view of the connection structure between the middle support block and the drive member from the front.

[0026] In the figure: 1. workbench, 2. support block, 3. fixed rod, 4. baffle, 5. sleeve, 6. pull rod, 7. spring, 8. bump, 9. connecting rod, 10. limit block, 11. threaded block, 12. first screw, 13. push plate, 14. limit rod, 15. slot plate, 16. fixed block, 17. first rotating block, 18. second rotating block, 19. top block, 20. second screw, 21. ball. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-8 The present invention provides a technical solution for a fixture for a curved surface mold of a high-speed machining center: a fixture for a curved surface mold of a high-speed machining center, comprising a workbench 1, with support blocks 2 attached to both sides of the top of the workbench 1. The workbench 1 serves as the basic bearing platform of the entire fixture and is made of high-strength cast iron. Through-threaded holes are provided on both sides of the support block 2, and the internal threads of the through-threaded holes are connected to fixing rods 3. The bottom end of the fixing rod 3 is fixed with a baffle 4 by welding, and the shape of the baffle 4 matches the T-shaped slide groove on the workbench 1. It can slide freely in the slide groove, which is convenient for adjusting the position of the support block 2, so that the baffle 4 and the fixed rod 3 form a solid overall structure. The baffle 4 is fixed to the bottom end of the fixed rod 3, and the side wall of the support block 2 is fixed with a sleeve 5. A sliding hole is opened inside the sleeve 5 to ensure that the pull rod 6 slides inside. The pull rod 6 is inserted into the inside of the sleeve 5, and a pull ring is provided on the top of the pull rod 6 to facilitate manual operation by the operator. By cooperating with the spring 7, the protrusion 8 and other components, the support block 2 can be quickly positioned and fixed. A limit piece is provided at the bottom end of the pull rod 6;

[0029] The top of the support block 2 is provided with a driving part, and a push plate 13 is fixed on the inner side of the driving part, and a limit rod 14 is fixed on the inner side of the push plate 13. When the limit rod 14 moves inward, the movement inside the slot plate 15 can limit the movement of the clamping part. The outer wall of the limit rod 14 is sleeved with a slot plate 15, and the slot plate 15 is used to provide support and limit when the limit rod 14 moves inward, and the bottom end of the slot plate 15 is connected to the side wall of the support block 2 through a connecting plate. A clamping part is provided on the inner side of the limit rod 14, and a threaded hole is provided inside the center of the slot plate 15, and the internal thread of the threaded hole is connected to a second screw 20. The second screw 20 is used to adjust the position of the ball 21, so that the ball 21 moves to the center of the arc workpiece for support. The ball 21 is fixed on the inner side of the second screw 20, and slide grooves matching the baffle 4 are provided on both sides of the top of the workbench 1, and a card slot is provided above the slide groove.

[0030] The limiting part includes a spring 7, which is sleeved on the outer wall of the bottom end of the pull rod 6, and the top of the spring 7 is connected to the bottom end of the sleeve 5. The spring 7 is used to provide a downward thrust to the protrusion 8. The bottom end of the spring 7 is fixed with a protrusion 8, and the protrusion 8 is used to transmit the downward thrust to the limiting block 10 through the connecting rod 9. The limiting block 10 is hexagonal in shape and matches the slot opened above the workbench 1 to ensure that it can fit tightly after installation to achieve precise limiting of the support block 2, and the protrusion 8 is sleeved on the outer wall of the pull rod 6, and the connecting rod 9 is fixed on the inner side of the protrusion 8. The limiting block 10 is fixed on the inner side of the connecting rod 9, and the limiting block 10 is sleeved on the outer wall of the fixed rod 3. The limiting block 10 is hexagonal in shape and matches the slot opened above the workbench 1.

[0031] The driving member includes a threaded block 11, which is fixed to the top of the support block 2. The threaded block 11 is fixed to the top of the support block 2 to ensure that the axis of the first screw 12 is parallel to the movement direction of the push plate 13, thereby ensuring the accuracy of the transmission. The internal thread of the threaded block 11 is connected to the first screw 12, and the inner side of the first screw 12 is rotatably connected to the push plate 13 through the bearing shaft. When the first screw 12 rotates, it can move inward to transmit the inward force to the push plate 13.

[0032] The clamping member includes a fixed block 16, which is fixed on the inner side of the limiting rod 14. The inner side of the fixed block 16 is rotatably connected to the first rotating block 17, and the inner side of the first rotating block 17 is rotatably connected to the second rotating block 18. A top block 19 is fixed to the inner side of the second rotating block 18. The first rotating block 17 and the second rotating block 18 are semicircular in shape. An arc-shaped limiting groove is provided inside the fixed block 16, and the inside of the arc-shaped limiting groove is connected to the first rotating block 17 through a slider. The clamping member on the left side is inclined outward, and the clamping member on the right side is inclined inward, and the clamping member on the right side is slightly wider than the clamping member on the left side.

[0033] Working principle: When a tooling fixture for a curved mold of a high-speed machining center is put into use, when it is necessary to support the curved workpiece, the user first picks up the support block 2 and aligns the baffle 4 with the slide position of the workbench 1. After alignment, the pull rod 6 is pulled upward. When pulling, the protrusion 8 moves upward to squeeze the spring 7. When the protrusion 8 moves upward, it drives the limit block 10 to move upward at the same time on the outer wall of the fixed rod 3 through the connecting rod 9. Then the baffle 4 is inserted and the support block 2 is moved to the appropriate position. The fixing rod 3 is rotated by the tool. When the fixing rod 3 rotates inside the support block 2, the baffle 4 is driven to move upward, thereby achieving support between the baffle 4 and the support block 2. When the baffle 4 is tightly attached to the inner wall of the workbench 1, the support block 2 is fixed above the workbench 1. Then the user releases the pull rod 6 and pushes the protrusion 8 downward by the reaction force of the spring 7. When the protrusion 8 moves downward, it drives the limit block through the connecting rod 9. When the workpiece is to be fixed, the center of the curved surface of the workpiece is first fitted with the ball 21, and then the user rotates the first screw 12. When the first screw 12 rotates, it moves inward inside the threaded block 11. When moving, the limit rod 14 is driven inward by the push plate 13. The limit rod 14 drives the fixing block 16 to move inward and fit the curved surface of the workpiece. When fitting, when different positions of the curved surface contact the first rotating block 17 and the second rotating block 18, the first rotating block 17 and the second rotating block 18 rotate slightly, thereby achieving a large area of ​​contact between the top block 19 and the curved surface of the workpiece. Then the user installs the clamp on the right side above the worktable 1, and then slides it to the left to contact the side wall of the workpiece, thereby fixing the workpiece.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for a high-speed machining center curved surface mold, comprising a workbench (1), characterized in that: The top sides of the workbench (1) are fitted with support blocks (2), the inside of the two sides of the support block (2) are provided with through threaded holes, and the internal threads of the through threaded holes are connected to fixed rods (3), the bottom ends of the fixed rods (3) are fixed with baffles (4), the side walls of the support block (2) are fixed with sleeves (5), the inside of the sleeves (5) is plugged with pull rods (6), the bottom ends of the pull rods (6) are provided with limiting parts, the top of the support block (2) is provided with a driving part, the inner side of the driving part is provided with a stopper (6), and the bottom of the driving part is provided with a stopper (6). A push plate (13) is fixed, a limiting rod (14) is fixed on the inner side of the push plate (13), a groove plate (15) is sleeved on the outer wall of the limiting rod (14), and the bottom end of the groove plate (15) is connected to the side wall of the support block (2) through a connecting plate, a clamping part is provided on the inner side of the limiting rod (14), a threaded hole is opened inside the center of the groove plate (15), and the inner thread of the threaded hole is connected to a second screw rod (20), and a round ball (21) is fixed on the inner side of the second screw rod (20).

2. The fixture for high-speed machining center curved mold according to claim 1, characterized in that: Slide grooves matching the baffle (4) are provided on both sides of the top of the workbench (1), and a clamping groove is provided above the slide grooves.

3. The fixture for high-speed machining center curved mold according to claim 1, characterized in that: The limiting member includes a spring (7), the spring (7) is sleeved on the outer wall of the bottom end of the pull rod (6), and the top end of the spring (7) is connected to the bottom end of the sleeve (5), a protrusion (8) is fixed to the bottom end of the spring (7), and the protrusion (8) is sleeved on the outer wall of the pull rod (6), a connecting rod (9) is fixed on the inner side of the protrusion (8), a limiting block (10) is fixed on the inner side of the connecting rod (9), and the limiting block (10) is sleeved on the outer wall of the fixing rod (3).

4. The fixture for high-speed machining center curved surface mold according to claim 3, characterized in that: The limiting block (10) is hexagonal in shape and matches the slot provided above the workbench (1).

5. The fixture for high-speed machining center curved surface mold according to claim 1, characterized in that: The driving member includes a threaded block (11), the threaded block (11) is fixed to the top end of the support block (2), the internal thread of the threaded block (11) is connected to a first screw rod (12), and the inner side of the first screw rod (12) is rotatably connected to the push plate (13) through a bearing shaft.

6. The fixture for high-speed machining center curved surface mold according to claim 1, characterized in that: The clamping member comprises a fixed block (16), the fixed block (16) is fixed on the inner side of the limiting rod (14), the inner side of the fixed block (16) is rotatably connected to a first rotating block (17), the inner side of the first rotating block (17) is rotatably connected to a second rotating block (18), and the inner side of the second rotating block (18) is fixed with a top block (19).

7. The fixture for high-speed machining center curved surface mold according to claim 6, characterized in that: The first rotating block (17) and the second rotating block (18) are semicircular in shape.

8. The fixture for high-speed machining center curved surface mold according to claim 6, characterized in that: An arc-shaped limiting groove is provided inside the fixed block (16), and the inside of the arc-shaped limiting groove is connected to the first rotating block (17) via a sliding block.

9. The fixture for high-speed machining center curved surface mold according to claim 1, characterized in that: The clamping piece on the left side is inclined outward, the clamping piece on the right side is inclined inward, and the clamping piece on the right side is slightly wider than the clamping piece on the left side.

Images