Vertical machining center positioning tool clamp

Abstract

The utility model relates to the field of machining center clamps, and discloses a vertical machining center positioning tool clamp which comprises a bottom plate, a moving groove is formed in the upper surface of the bottom plate, a clamping mechanism is arranged on the upper surface of the bottom plate, the clamping mechanism comprises a fixing assembly, and the fixing assembly comprises a fixing block. The fixing block is slidably connected to the upper surface of the bottom plate, the inner wall of the fixing block is slidably connected with a push plate, one end of the push plate is fixedly connected with a friction pad, the other end of the push plate is fixedly connected with a connecting plate, and the connecting plate is elastically connected with the fixing block through a spring. According to the utility model, through the arrangement of the fixing assembly, when a hard and brittle workpiece such as aluminum-based silicon carbide is clamped, the clamping fixing block can stably fix the workpiece without too large extrusion force by utilizing the stabilizing effect of the friction pad and the buffering effect of the spring, so that the workpiece can be prevented from generating cracks due to rigid clamping; the practicability of the device is further improved.

Description

Technical Field

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

[0002] A vertical machining center is a machining center in which the spindle axis is set perpendicular to the worktable. It is mainly suitable for machining complex parts such as plates, discs, molds and small shells. Vertical machining centers can complete milling, boring, drilling, tapping and thread cutting operations.

[0003] In the existing technology, the tooling fixtures of vertical machining centers are often damaged due to cracks caused by rigid clamping when machining hard and brittle workpieces such as aluminum-based silicon carbide. If the clamping is not tight, the workpiece will wobble. Therefore, a positioning tooling fixture for vertical machining centers is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a vertical machining center positioning fixture, which aims to improve the problem in the prior art that "the fixture of the vertical machining center is often damaged due to cracks caused by rigid clamping when machining hard and brittle workpieces such as aluminum-based silicon carbide".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a vertical machining center positioning fixture, including a base plate, a movable groove formed on the upper surface of the base plate, a clamping mechanism provided on the upper surface of the base plate, the clamping mechanism including a fixing component, the fixing component including a fixing block, the fixing block being slidably connected to the upper surface of the base plate, a push plate being slidably connected to the inner wall of the fixing block, a friction pad being fixedly connected to one end of the push plate, a connecting plate being fixedly connected to the other end of the push plate, and the connecting plate being elastically connected to the fixing block by a spring.

[0006] As a further description of the above technical solution:

[0007] The clamping mechanism further includes an auxiliary component, which includes a cylinder body. The cylinder body is fixedly connected to the outer wall of the fixing block. A push rod is slidably connected to the inner wall of the cylinder body. A sealing plate is fixedly connected to one end of the push rod, and an installation block is fixedly connected to the other end of the push rod. A pressing block is slidably connected to the inner wall of the installation block. A limiting block is fixedly connected to the outer wall of the pressing block. Elastic pads are fixedly connected to both ends of the pressing block. Magnetic blocks are fixedly connected to the inner walls of both the pressing block and the installation block.

[0008] As a further description of the above technical solution:

[0009] A drive assembly is provided on the lower surface of the base plate. The drive assembly includes a mounting rod, which is fixedly connected to the lower surface of the base plate. A motor is mounted on the outer wall of the mounting rod. A lead screw is fixedly connected to the output shaft of the motor. A connecting block is provided on the outer wall of the lead screw. A chip blocking block is slidably connected to the inner wall of the connecting block.

[0010] As a further description of the above technical solution:

[0011] The connecting plate is slidably connected to the inner wall of the fixing block, and the fixing block is fixedly connected to the top of the connecting block.

[0012] As a further description of the above technical solution:

[0013] The auxiliary components are provided in multiple sets, and the multiple sets of auxiliary components are symmetrically arranged with the center line of the fixed block as the axis of symmetry. An air pipe is provided on the top of the cylinder body. The air outlet of the air pipe is set in a forked shape and is connected to two sets of cylinder bodies respectively. The air inlet of the air pipe is connected to the air outlet of the air pump. The sealing plate is slidably connected to the inner wall of the cylinder body.

[0014] As a further description of the above technical solution:

[0015] The lead screw is rotatably connected to the inner wall of the mounting rod, the connecting block is slidably connected to the inner wall of the mounting rod, and the connecting block is slidably connected to the inner wall of the moving groove.

[0016] As a further description of the above technical solution:

[0017] The chip block is fixedly connected to the outer wall of the mounting rod, and the upper surface of the chip block is inclined.

[0018] As a further description of the above technical solution:

[0019] The extrusion block is shaped like a semi-circular arc, and the elastic pad is shaped like a semi-circle.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting a fixing component, when clamping hard and brittle workpieces such as aluminum-based silicon carbide, the stabilizing effect of the friction pad and the buffering effect of the spring are used to allow the clamping fixing block to complete the stable fixing of the workpiece without too much squeezing force, which can avoid the workpiece from cracking due to rigid clamping and further improve the practicality of the device.

[0022] 2. In this utility model, by setting auxiliary components, when clamping workpieces with special shapes, the semi-circular arc-shaped extrusion block slides within the mounting block to form a three-point positioning structure, stably supporting the workpiece. The elastic pad adaptively conforms to the irregular curved surface, further increasing the effectiveness of the device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional structural disassembly diagram of the driving component in this utility model;

[0025] Figure 3 This is a three-dimensional cross-sectional view of the fixing component in this utility model;

[0026] Figure 4 This is a three-dimensional cross-sectional view of the auxiliary component in this utility model.

[0027] Legend:

[0028] 1. Base plate; 2. Auxiliary components; 21. Cylinder body; 22. Sealing plate; 23. Push rod; 24. Mounting block; 25. Magnetic block; 26. Extrusion block; 27. Elastic pad; 28. Restriction block; 3. Fixing component; 31. Fixing block; 32. Spring; 33. Connecting plate; 34. Push plate; 35. Friction pad; 4. Moving groove; 5. Drive component; 51. Motor; 52. Mounting rod; 53. Lead screw; 54. Connecting block; 55. Chip block; 6. Air pipe. Detailed Implementation

[0029] 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.

[0030] Reference Figure 1 , Figure 2 , Figure 3This utility model provides an embodiment of a vertical machining center positioning fixture, including a base plate 1 for placing machining materials. The upper surface of the base plate 1 has a moving groove 4 for moving a clamping mechanism. The upper surface of the base plate 1 is provided with a clamping mechanism for clamping aluminum-based silicon carbide workpieces. The clamping mechanism includes a fixing component 3, which includes a fixing block 31 for pressing and fixing the aluminum-based silicon carbide workpiece. The fixing block 31 is slidably connected to the upper surface of the base plate 1 and is pushed and pressed to fix the clamped workpiece by a driving component 5. A push plate 34 for pushing a friction pad 35 is slidably connected to the inner wall of the fixing block 31. One end of the push plate 34 is fixedly connected to an additional fixing block. The friction pad 35 is pressed and fixed to improve stability. The friction pad 35 is pushed by the push plate 34 to contact the aluminum-based silicon carbide workpiece, which can increase the fixing stability of the fixing block 31 and avoid the workpiece being damaged due to excessive pressure from the fixing block 31. The other end of the push plate 34 is fixedly connected to a connecting plate 33 for connecting the spring 32 to push the push plate 34. The connecting plate 33 and the fixing block 31 are elastically connected by the spring 32. The spring 32 provides elastic force for the push plate 34 to push out the friction pad 35. The connecting plate 33 is slidably connected to the inner wall of the fixing block 31 and stably connected to the spring 32. The fixing block 31 is fixedly connected to the top of the connecting block 54 and is pushed and moved by the connecting block 54 of the drive assembly 5.

[0031] Reference Figure 1 , Figure 4The clamping mechanism also includes an auxiliary component 2 for assisting the fixing component 3 in fixing the workpiece. The auxiliary component 2 includes a cylinder 21, which, together with a sealing plate 22, forms a closed space. It utilizes the air pressure provided by the air pipe 6 to push other components. The cylinder 21 is fixedly connected to the outer wall of the fixing block 31, assisting the fixing block 31 in clamping the workpiece. A push rod 23 for pushing other components is slidably connected to the inner wall of the cylinder 21. One end of the push rod 23 is fixedly connected to the sealing plate 22 for sealing the cylinder 21, and the other end is fixedly connected to... A mounting block 24 is used to mount and place the extrusion block 26. The inner wall of the mounting block 24 is slidably connected to the extrusion block 26 for extruding and fixing the workpiece. The extrusion block 26 can slide on the inner wall of the mounting block 24 to conform to the outer wall of workpieces of different shapes. A limiting block 28 is fixedly connected to the outer wall of the extrusion block 26 to limit the sliding range of the extrusion block 26. Both ends of the extrusion block 26 are fixedly connected to elastic pads 27 to prevent the extrusion block from bumping or pressing against the aluminum-based silicon carbide workpiece. Magnetic blocks 25 are fixedly connected to both the extrusion block 26 and the inner wall of the mounting block 24. The magnetic block 25 resets the clamping block 26 after it has been released from clamping, preventing it from affecting the next clamping fixation. Multiple sets of auxiliary components 2 are provided, symmetrically arranged around the center line of the fixing block 31. This allows for better assistance in fixing the fixing block 31 when dealing with workpieces of unusual shapes. The top of the cylinder 21 is equipped with an air pipe 6 for pressurizing the interior of the cylinder 21. The outlet of the air pipe 6 is bifurcated and connects to two sets of cylinders 21 respectively, evenly distributing the gas from the air pump into the interior of the cylinder 21. The inlet of the air pipe 6... The air end is connected to the air outlet of the air pump, and the air pressure is provided by the air pump to control the telescopic clamping of the auxiliary component 2. The sealing plate 22 is slidably connected to the inner wall of the cylinder 21. The shape of the extrusion block 26 is set as a semi-circular arc. When it comes into contact with an irregularly shaped workpiece, one end of the extrusion block 26 will generate a thrust when it contacts the workpiece first, causing it to slide on the inner wall of the mounting block 24, driving the other end to move forward to contact the workpiece, thus completing the bonding and extrusion of the workpiece. The shape of the elastic pad 27 is set as a semi-circular arc, which allows both ends of the extrusion block 26 to be stably bonded to the surface of the workpiece.

[0032] Reference Figure 1 , Figure 2The lower surface of the base plate 1 is provided with a drive assembly 5 for clamping the workpiece with the push clamping mechanism. The drive assembly 5 includes a mounting rod 52 for mounting other components. The mounting rod 52 is fixedly connected to the lower surface of the base plate 1 and is fixedly mounted by the base plate 1. A motor 51 for driving the lead screw 53 to rotate is mounted on the outer wall of the mounting rod 52. The output shaft of the motor 51 is fixedly connected to the lead screw 53 for driving the fixing assembly 3 to clamp and fix the workpiece. A connecting block 54 for driving the fixing block 31 to move is provided on the outer wall of the lead screw 53. A chip-blocking block 55 is slidably connected to the inner wall of the connecting block 54. The chip-blocking block 55 is used for... To prevent debris generated during processing from entering the mounting rod 52 and affecting the use of the lead screw 53, the lead screw 53 is rotatably connected to the inner wall of the mounting rod 52 and is installed by the mounting rod 52. The connecting block 54 is slidably connected to the inner wall of the mounting rod 52 and is driven by the lead screw 53 to slide inside the mounting rod 52. The connecting block 54 is slidably connected to the inner wall of the moving groove 4, which provides sliding space for the connecting block 54. The chip blocking block 55 is fixedly connected to the outer wall of the mounting rod 52. The upper surface of the chip blocking block 55 is set to be inclined to guide the falling debris in other directions and protect the mounting rod 52 and the lead screw 53.

[0033] Working principle: During use, the starter motor 51 drives the lead screw 53 to rotate, driving the connecting block 54 to move horizontally along the inner cavity of the mounting rod 52. The connecting block 54 drives the fixed block 31 to move towards the workpiece through the moving groove 4, clamping the aluminum-based silicon carbide workpiece. The inclined design of the chip blocking block 55 guides the machining chips in other directions, preventing them from entering the transmission part of the lead screw 53. During the clamping process, when the fixed block 31 contacts the workpiece, the spring 32 pushes the connecting plate 33, causing the push plate 34 to move forward. The push plate 34 causes the friction pad 35 to tightly adhere to the surface of the workpiece, forming an elastic contact surface. The elastic deformation of the spring 32 can absorb part of the pressure generated by clamping, preventing the aluminum-based silicon carbide workpiece from cracking due to rigid clamping. Furthermore, the auxiliary fixing system works in coordination. The air pump synchronously inflates the two sets of cylinders 21 through the bifurcated air pipe 6. The air pressure pushes the sealing plate 22 to move the push rod 23 forward, and the mounting block 24 is pushed towards the workpiece. When the extrusion block 26 contacts the workpiece, the semi-circular arc structure guides both ends to contact the workpiece surface. The limiting block 28 controls the sliding stroke. The magnetic suction block 25 maintains the initial position of the extrusion block 26 when it is not in operation. The elastic pad 27 generates deformation buffer at the moment of contact. When clamping workpieces with special shapes, the extrusion block 26 slides in the mounting block 24 to form a three-point positioning structure. The semi-circular elastic pad 27 adaptively fits the irregular curved surface. The two sets of auxiliary components 2 form a symmetrical clamping force field to ensure torque balance.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture clamp for a vertical machining center, comprising a base plate (1), characterized in that: The upper surface of the bottom plate (1) is provided with a moving groove (4), and the upper surface of the bottom plate (1) is provided with a clamping mechanism, which comprises a fixed assembly (3). The fixed assembly (3) comprises a fixed block (31) which is slidingly connected to the upper surface of the bottom plate (1), and the inner wall of the fixed block (31) is slidingly connected with a push plate (34), one end of the push plate (34) is fixedly connected with a friction pad (35), and the other end of the push plate (34) is fixedly connected with a connecting plate (33), and the connecting plate (33) is elastically connected with the fixed block (31) through a spring (32).

2. The positioning fixture clamp of a vertical machining center according to claim 1, characterized in that: The clamping mechanism further comprises an auxiliary assembly (2), and the auxiliary assembly (2) comprises a cylinder body (21) which is fixedly connected to the outer wall of the fixed block (31), the inner wall of the cylinder body (21) is slidingly connected with a push rod (23), one end of the push rod (23) is fixedly connected with a sealing plate (22), the other end of the push rod (23) is fixedly connected with a mounting block (24), the inner wall of the mounting block (24) is slidingly connected with an extrusion block (26), the outer wall of the extrusion block (26) is fixedly connected with a limiting block (28), both ends of the extrusion block (26) are fixedly connected with elastic pads (27), and the inner wall of the extrusion block (26) and the mounting block (24) are fixedly connected with magnetic attraction blocks (25).

3. The positioning fixture clamp of claim 1, wherein: The lower surface of the bottom plate (1) is provided with a driving assembly (5), and the driving assembly (5) comprises a mounting rod (52) which is fixedly connected to the lower surface of the bottom plate (1), the outer wall of the mounting rod (52) is provided with a motor (51), the output shaft of the motor (51) is fixedly connected with a lead screw (53), the outer wall of the lead screw (53) is provided with a connecting block (54), and the inner wall of the connecting block (54) is slidingly connected with a chip stopping block (55).

4. The positioning fixture clamp of claim 1, wherein: The connecting plate (33) is slidingly connected to the inner wall of the fixed block (31), and the fixed block (31) is fixedly connected to the top of the connecting block (54).

5. The positioning fixture clamp of claim 2, wherein: The auxiliary assembly (2) is provided with multiple groups, and the multiple groups of the auxiliary assembly (2) are symmetrically arranged with the center line of the fixed block (31) as the axis of symmetry, the top of the cylinder body (21) is provided with an air pipe (6), the air outlet end of the air pipe (6) is provided in a bifurcated shape and connected with two groups of cylinder bodies (21) respectively, the air inlet end of the air pipe (6) is connected with the air outlet end of the air pump, and the sealing plate (22) is slidingly connected to the inner wall of the cylinder body (21).

6. The positioning fixture clamp of claim 3, wherein: The lead screw (53) is rotationally connected to the inner wall of the mounting rod (52), the connecting block (54) is slidingly connected to the inner wall of the mounting rod (52), and the connecting block (54) is slidingly connected to the inner wall of the moving groove (4).

7. The positioning fixture clamp of claim 3, wherein: The chip stopping block (55) is fixedly connected to the outer wall of the mounting rod (52), and the upper surface of the chip stopping block (55) is provided in an inclined shape.

8. The positioning fixture clamp of claim 2, wherein: The shape of the extrusion block (26) is provided as a semicircular arc, and the shape of the elastic pad (27) is provided as a semicircle.

Images