A boring and milling fixture

Abstract

The utility model provides a kind of boring and milling fixture, it includes workbench, chuck mechanism, tailstock mechanism and clamping mechanism;Chuck mechanism is set on workbench, to clamp one end of product to be processed;Tailstock mechanism is set on workbench, and it is opposite with chuck mechanism interval arrangement, to be tightly in the other end of product to be processed;Clamping mechanism is set on workbench, and it is located between chuck mechanism and tailstock mechanism, to clamp the middle part of product to be processed;Clamping mechanism includes lower clamp block, upper clamp block and lifting drive unit, upper clamp block is located above lower clamp block, lifting drive unit is connected with upper clamp block, lifting drive unit is used to drive upper clamp block to lift, first clamping groove is opened in lower clamp block, second clamping groove is opened in upper clamp block, second clamping groove is opposite first clamping groove arrangement.The boring and milling fixture can avoid " clamping injury " product to be processed, and can avoid position deviation of product to be processed.

Description

Technical Field

[0001] This utility model relates to the field of boring and milling technology, and in particular to a boring and milling fixture. Background Technology

[0002] In the field of machining, boring and milling is a key process in manufacturing large drill bits (such as ultra-long drill bits used in mining and geological exploration). These drill bits are typically long, large in volume, and heavy in weight. During manufacturing, these drill bits require multi-directional boring and milling (such as powder discharge grooves and transverse grooves).

[0003] Currently, traditional chucks (such as three-jaw chucks) are commonly used for clamping such drill bits during boring and milling operations. However, due to the unique characteristics of large drill bits, this traditional clamping method has significant limitations, mainly in the following aspects: Firstly, regarding clamping and positioning, large drill bits are bulky and quite heavy, while traditional chuck jaws have physical limits on their travel length and rated clamping force. When forcibly clamping excessively heavy workpieces, indentations or even permanent damage (i.e., "clamping marks") are easily left on the drill bit surface. This surface damage not only directly affects the product's appearance quality but also creates stress concentration points in critical load-bearing areas, severely weakening the drill bit's structural strength and fatigue life, thus impacting its subsequent performance and reliability.

[0004] Secondly, the problems are particularly prominent in terms of machining accuracy and stability. During milling, the enormous weight of the workpiece continuously generates a downward force. Due to the limited clamping force of the chuck, this downward force causes the workpiece to sink or shift slightly within the fixture. For high-precision boring and milling, even micrometer-level displacements are sufficient to cause the actual machining trajectory of the tool to deviate from the preset program, resulting in the inability to guarantee critical groove dimensions and positions. This makes it impossible to guarantee machining dimensions, making it difficult to meet high-precision machining requirements and severely impacting product yield and production efficiency. Utility Model Content

[0005] In existing technologies, traditional chucks are used for clamping products during boring and milling. However, when the product is long or heavy, the chuck can easily damage it, and the product's position can easily shift downwards during processing, affecting the product's pass rate and production efficiency. This invention provides a boring and milling fixture with a chuck mechanism, a center mechanism, and a clamping mechanism. The chuck mechanism clamps the tail of the product, the center mechanism holds it against the end face, and the clamping mechanism holds the middle. This combination of center holding, chuck clamping, and clamping provides multiple layers of fixation, ensuring more even force distribution on the product during clamping, preventing damage, and providing more stable clamping to prevent downward shift. This improves the pass rate and production efficiency of the machining process.

[0006] A boring and milling fixture includes a worktable, a chuck mechanism, a center mechanism, and a clamping mechanism; The chuck mechanism is mounted on the worktable and is used to clamp one end of the product to be processed. The top mechanism is set on the worktable and is positioned opposite the chuck mechanism at a distance, so as to press against the other end of the product to be processed. The clamping mechanism is disposed on the worktable and located between the chuck mechanism and the center mechanism, and is used to clamp the middle part of the product to be processed; The clamping mechanism includes a lower clamping block, an upper clamping block, and a lifting drive unit. The upper clamping block is located above the lower clamping block. The lifting drive unit is connected to the upper clamping block and is used to drive the upper clamping block to move up and down. The lower clamping block has a first clamping groove, and the upper clamping block has a second clamping groove. The second clamping groove is positioned opposite the first clamping groove.

[0007] Preferably, the clamping mechanism further includes a base plate, which is disposed on the worktable, and the lower clamping block and the lifting drive unit are both disposed on the base plate.

[0008] Preferably, a height adjustment unit is provided between the lower clamping block and the base plate, the height adjustment unit being used to adjust the height of the lower clamping block.

[0009] Preferably, a balance adjustment unit is also provided between the lower clamping block and the base plate; Along the width direction of the worktable, the height adjustment unit is located at the bottom center of the lower clamping block, and the balance adjustment unit is respectively provided on both sides of the bottom of the lower clamping block.

[0010] Preferably, a limiting block can be detachably placed between the lower clamping block and the base plate.

[0011] Preferably, a wear-resistant block is detachably provided on the wall of the first clamping groove, and the lower clamping block contacts the product to be processed through the wear-resistant block.

[0012] Preferably, the groove wall of the first clamping groove includes a bottom groove wall located at the bottom and two side groove walls connected to both sides of the bottom groove wall. The two side groove walls are inclined and the wear-resistant blocks are detachably provided on the two side groove walls respectively.

[0013] Preferably, a guide rod is provided between the upper clamping block and the lower clamping block, and a height adjustment component is provided between the lifting drive unit and the upper clamping block.

[0014] Preferably, the chuck mechanism, the clamping mechanism, and the center mechanism are spaced apart sequentially along the length of the worktable; Along the width direction of the worktable, there are two lifting drive units, and the two lifting drive units are respectively connected to both sides of the upper clamping block through the height adjustment component.

[0015] Preferably, the worktable includes a worktable body and an extension worktable connected to one end of the worktable body, the chuck mechanism and the clamping mechanism are disposed on the worktable body, and the tip mechanism is disposed on the extension worktable.

[0016] Compared with the prior art, the boring and milling fixture provided by this utility model includes a worktable, a chuck mechanism, a center mechanism, and a clamping mechanism. The chuck mechanism is disposed on the worktable and is used to clamp one end of the product to be processed. The center mechanism is disposed on the worktable and is positioned opposite the chuck mechanism at a distance, and is used to press against the other end of the product to be processed. The clamping mechanism is disposed on the worktable and is located between the chuck mechanism and the center mechanism, and is used to clamp the middle part of the product to be processed. The clamping mechanism includes a lower clamping block, an upper clamping block, and a lifting drive unit. The upper clamping block is located above the lower clamping block, and the lifting drive unit is connected to the upper clamping block. The lifting drive unit is used to drive the upper clamping block to lift and lower. The lower clamping block has a first clamping groove, and the upper clamping block has a second clamping groove, which is positioned opposite the first clamping groove. The boring and milling fixture is equipped with a clamping mechanism. When clamping the product to be processed, the clamping mechanism can hold the product in the middle, providing better support and clamping, and ensuring more stable clamping. This prevents the product from shifting downwards, thereby improving the pass rate and production efficiency. Furthermore, when clamping the product, the center mechanism, the chuck mechanism, and the clamping mechanism form multiple fixations, ensuring more even force distribution on the product during clamping and better preventing damage from clamping. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of a boring and milling fixture provided in one embodiment; Figure 2 for Figure 1 A three-dimensional structural diagram of the boring and milling fixture from another angle; Figure 3 for Figure 1 A three-dimensional structural diagram of the boring and milling fixture from another angle; Figure 4 A three-dimensional structural schematic diagram of a clamping mechanism provided in one embodiment; Explanation of reference numerals in the attached figures: The components include: a boring and milling fixture 100, a worktable 10, a worktable body 11, an extended worktable 12, a connecting plate 13, a chuck mechanism 20, a center mechanism 30, a tailstock 31, a center 32, a clamping mechanism 40, a lower clamping block 41, a first clamping groove 411, a groove wall 4111, a groove bottom wall 4112, a groove side wall 4113, an upper clamping block 42, a second clamping groove 421, a first clearance hole 412, a lifting drive unit 43, a base plate 44, a height adjustment unit 45, a height adjustment screw 451, a height adjustment ring 452, a balance adjustment unit 46, a balance adjustment screw 461, a balance adjustment nut 462, a limit block 47, a wear-resistant block 48, a guide rod 49, a height adjustment assembly 50, a height adjustment nut 51, and a height adjustment screw 52. 200 products awaiting processing. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that when a component is referred to as "mounted on", "fixed on", or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0021] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0022] This utility model provides a boring and milling fixture, which includes a worktable, a chuck mechanism, a center mechanism, and a clamping mechanism. The chuck mechanism is disposed on the worktable and is used to clamp one end of the product to be processed. The center mechanism is disposed on the worktable and is positioned opposite the chuck mechanism at a distance, and is used to press against the other end of the product to be processed. The clamping mechanism is disposed on the worktable and is located between the chuck mechanism and the center mechanism, and is used to clamp the middle part of the product to be processed. The clamping mechanism includes a lower clamping block, an upper clamping block, and a lifting drive unit. The upper clamping block is located above the lower clamping block, and the lifting drive unit is connected to the upper clamping block. The lifting drive unit is used to drive the upper clamping block to move up and down. The lower clamping block has a first clamping groove, and the upper clamping block has a second clamping groove, which is positioned opposite the first clamping groove. The boring and milling fixture is equipped with a clamping mechanism. When clamping the product to be processed, the clamping mechanism can hold the product in the middle, providing better support and clamping, and ensuring more stable clamping. This prevents the product from shifting downwards, thereby improving the pass rate and production efficiency. Furthermore, when clamping the product, the center mechanism, the chuck mechanism, and the clamping mechanism form multiple fixations, ensuring more even force distribution on the product during clamping and better preventing damage from clamping.

[0023] Please refer to the following: Figures 1 to 4 In one embodiment, a boring and milling fixture 100 is provided to clamp the product 200 to be processed during boring and milling, thereby fixing the position of the product 200. The boring and milling fixture 100 mainly addresses the problems in the prior art where fixtures easily damage the product during clamping, and the product tends to shift downwards during clamping, affecting the product's pass rate and production efficiency.

[0024] The boring and milling fixture 100 includes a worktable 10, a chuck mechanism 20, a center mechanism 30, and a clamping mechanism 40. The chuck mechanism 20, the center mechanism 30, and the clamping mechanism 40 are respectively disposed on the worktable 10. The center mechanism 30 and the chuck mechanism 20 are disposed opposite each other at a distance, and the clamping mechanism 40 is located between the chuck mechanism 20 and the center mechanism 30. The chuck mechanism 20 is used to clamp one end of the product 200 to be processed, the center mechanism 30 is used to press against the other end of the product 200 to be processed, and the clamping mechanism 40 is used to clamp the middle part of the product 200 to be processed.

[0025] The clamping mechanism 40 includes a lower clamping block 41, an upper clamping block 42, and a lifting drive unit 43. The upper clamping block 42 is located above the lower clamping block 41, and the lifting drive unit 43 is connected to the upper clamping block 42, used to drive the upper clamping block 42 to move up and down. The lower clamping block 41 has a first clamping groove 411, and the upper clamping block 42 has a second clamping groove 421, which is directly opposite to the first clamping groove 411. When the clamping mechanism 40 clamps the product 200 to be processed, the middle part of the product 200 is located in the first clamping groove 411 and the second clamping groove 421. The clamping mechanism 40 clamps the middle part of the product 200 to be processed through the groove walls of the first clamping groove 411 and the groove walls of the second clamping groove 421.

[0026] By configuring the lifting drive unit 43, the upper clamping block 42 can be automatically raised and lowered, improving processing efficiency and accuracy. For example, after machining a groove in one direction of the product 200, the lifting drive unit 43 can lift the upper clamping block 42 to release the product 200. Then, after the product 200 rotates to a specified angle, the lifting drive unit 43 can lower the upper clamping block 42 to clamp the product 200 again, thereby improving processing efficiency and ensuring multi-directional processing accuracy.

[0027] When the boring and milling fixture 100 clamps the workpiece 200, the tail of the workpiece 200 is clamped by the chuck mechanism 20, the middle of the workpiece 200 is clamped by the clamping mechanism 40, and the top surface of the workpiece 200 is supported by the center mechanism 30. This ensures that the workpiece 200 is subjected to more even force during clamping, avoiding excessive force concentration and thus preventing damage to the workpiece 200. Furthermore, the clamping mechanism 40 also supports the middle of the workpiece 200, better preventing it from shifting downwards due to its own weight and ensuring the stability of its position. Simultaneously, the chuck mechanism 20, the center mechanism 30, and the clamping mechanism 40 form multiple layers of fixation, reducing the shaking of the workpiece 200 during boring and milling and ensuring processing stability.

[0028] Specifically, in one embodiment, the product to be processed 200 is a drill bit. More specifically, in one embodiment, the product to be processed 200 is a large drill bit, which is long, large in volume, and heavy in weight.

[0029] Specifically, in one embodiment, the chuck mechanism 20 is a three-jaw chuck.

[0030] Preferably, in one embodiment, the clamping mechanism 40 further includes a base plate 44, which is disposed on the worktable 10. The lower clamping block 41 and the lifting drive unit 43 are both disposed on the base plate 44. The base plate 44 facilitates the installation of the lower clamping block 41 and the lifting drive unit 43, and also better ensures the stability of the connection between the clamping mechanism 40 and the worktable 10.

[0031] The base plate 44 can be clamped and fixed to the worktable 10 by a fastening structure. When it is necessary to adjust the position of the base plate 44, the fastening structure can be loosened, the base plate 44 can be adjusted along the length of the worktable 10, and then the fastening structure can be used to clamp and fix the base plate 44. This allows the clamping mechanism 40 to be flexibly adjusted to adapt to different models of products 200 to be processed.

[0032] Preferably, in one embodiment, a height adjustment unit 45 is provided between the lower clamping block 41 and the base plate 44, the height adjustment unit 45 being used to adjust the height of the lower clamping block 41. That is, in this embodiment, the height of the lower clamping block 41 is adjustable and can be adjusted according to actual needs. It is understood that drill bits come in various models, and the center diameter of different models is different. By setting the lower clamping block 41 to a height-adjustable structure, the clamping mechanism 40 can be adapted to different models of drill bits, improving the versatility of the boring and milling fixture 100.

[0033] Specifically, in one embodiment, the height adjustment unit 45 includes a height adjustment screw 451 and a height adjustment ring 452. The height adjustment screw 451 is disposed on the base plate 44, and the height adjustment ring 452 is rotatably disposed on the bottom of the lower clamping block 41, and the height adjustment ring 452 is threadedly connected to the height adjustment screw 451. By rotating the height adjustment ring 452, the threaded structure allows the height adjustment ring 452 to move on the height adjustment screw 451. Since the height adjustment ring 452 is disposed on the lower clamping block 41, its movement synchronously drives the lower clamping block 41, thereby adjusting the height of the lower clamping block 41. More specifically, the lower clamping block 41 is provided with a first clearance hole 412 corresponding to the height adjustment screw 451, the first clearance hole 412 being used to avoid the height adjustment screw 451.

[0034] Preferably, in one embodiment, a balance adjustment unit 46 is further provided between the lower clamping block 41 and the base plate 44. Along the width direction of the worktable 10, the height adjustment unit 45 is located at the bottom center of the lower clamping block 41, and the balance adjustment units 46 are respectively provided on both sides of the bottom of the lower clamping block 41. Wherein, the width direction of the worktable 10 is... Figure 1 As shown in the Y direction, the length direction of the worktable 10 is... Figure 1 The X direction is shown. That is to say, in this embodiment, the balance adjustment unit 46 is respectively provided on both sides of the bottom of the lower clamping block 41. The main function of the balance adjustment unit 46 is to level the lower clamping block 41 and ensure that the lower clamping block 41 will not tilt to one side, thereby ensuring that the lower clamping block 41 stably and reliably supports and clamps the product 200 to be processed.

[0035] Specifically, in one embodiment, the balance adjustment unit 46 includes a balance adjustment screw 461 and a balance adjustment nut 462. The balance adjustment screw 461 is disposed on the base plate 44, and the balance adjustment nut 462 is rotatably disposed on the bottom of the lower clamping block 41, and the balance adjustment nut 462 is threadedly connected to the balance adjustment screw 461. When one side of the lower clamping block 41 is tilted, the balance adjustment nut 462 on the corresponding side can be rotated, thereby moving the balance adjustment nut 462 on the balance adjustment screw 461 through the engagement of the threaded structure, thereby adjusting the height of one side of the lower clamping block 41 and achieving leveling of the lower clamping block 41.

[0036] More specifically, in one embodiment, the lower clamping block 41 is provided with a second clearance hole corresponding to the balance adjusting screw 461, the second clearance hole being used to avoid the balance adjusting screw 461.

[0037] Preferably, in one embodiment, a limiting block 47 is detachably placed between the lower clamping block 41 and the base plate 44. The main function of the limiting block 47 is to be placed at the bottom of the lower clamping block 41, providing support and limiting for the lower clamping block 41. The limiting block 47 effectively supports the lower clamping block 41, ensuring its stable position. Furthermore, the supporting force provided by the limiting block 47 also protects other structures. It is understood that since the required height of the lower clamping block 41 varies depending on the type of drill bit used, the limiting block 47 can be provided in various models with different heights, thus adapting to lower clamping blocks 41 at different heights.

[0038] Specifically, in one embodiment, two limiting blocks 47 are detachably placed between the lower clamping block 41 and the base plate 44. Along the width direction of the worktable 10, the two limiting blocks 47 are located on the left and right sides of the bottom of the lower clamping block 41.

[0039] Preferably, in one embodiment, a wear-resistant block 48 is detachably provided on the groove wall 4111 of the first clamping groove 411, and the lower clamping block 41 contacts the product 200 to be processed through the wear-resistant block 48. It is understood that when boring and milling a drill bit, multiple positions of the drill bit need to be bored and milled. After the groove on one position of the drill bit is bored and milled, the angle of the drill bit needs to be adjusted by rotation. During the rotation and adjustment of the drill bit, the position of the lower clamping block 41 in contact with the drill bit will experience a certain degree of wear. In this embodiment, by providing the detachable wear-resistant block 48 to contact the drill bit, it is possible to eliminate the need for repair or replacement of the entire lower clamping block 41 after wear, thereby reducing maintenance costs and downtime, and extending the overall service life of the fixture.

[0040] Specifically, in one embodiment, the groove wall 4111 of the first clamping groove 411 includes a bottom wall 4112 located at the bottom and two side walls 4113 connected to both sides of the bottom wall 4112. The two side walls 4113 are inclined, and the wear-resistant blocks 48 are detachably provided on each of the two side walls 4113. This structure facilitates the placement and clamping of the drill bit, and also further reduces maintenance costs and downtime, extending the overall service life of the fixture.

[0041] Specifically, in one embodiment, the wear-resistant block 48 is detachably mounted on the groove sidewall 4113 with a threaded hole provided on the groove sidewall 4113, and the wear-resistant block 48 is detachably mounted on the groove sidewall 4113 by screws.

[0042] Preferably, in one embodiment, a guide rod 49 is provided between the upper clamping block 42 and the lower clamping block 41. By providing the guide rod 49, the position of the upper clamping block 42 can be guided when the upper clamping block 42 is raised and lowered, which can effectively control the positional deviation between the upper clamping block 42 and the lower clamping block 41 and ensure the accuracy of the position between the upper clamping block 42 and the lower clamping block 41.

[0043] Preferably, in one embodiment, a height adjustment component 50 is provided between the lifting drive unit 43 and the upper clamping block 42. By providing the height adjustment component 50, the position of the upper clamping block 42 can be adjusted, thereby improving the versatility and practicality of the clamping mechanism 40.

[0044] Specifically, in one embodiment, the height adjustment assembly 50 includes a height adjustment nut 51 and a height adjustment screw 52. The height adjustment nut 51 is rotatably mounted on the lifting end of the lifting drive unit 43, and the height adjustment screw 52 is mounted on the upper clamping block 42 and threadedly connected to the height adjustment nut 51. When it is necessary to adjust the height position of the upper clamping block 42, the height adjustment nut 51 is rotated, thereby causing the height adjustment screw 52 to move through the engagement of the threaded structure. This movement of the height adjustment screw 52 simultaneously moves the upper clamping block 42, thus achieving the adjustment of the height position of the upper clamping block 42.

[0045] It is understandable that the lifting drive unit 43 has an upper limit to its stroke. When the size of the drill bit to be clamped is larger than the upper limit of the stroke of the lifting drive unit 43, the drill bit cannot be clamped by the clamping mechanism 40. However, by setting the height adjustment component 50, the upper clamping block 42 can be further raised, allowing the boring and milling chuck 100 to clamp larger drill bits, increasing its versatility and practicality. For example, when the lifting drive unit 43 uses a cylinder, the cylinder's stroke is limited. When a larger drill bit needs to be clamped, if the drill bit's size exceeds the cylinder's stroke, the limited stroke will prevent the drill bit from being clamped. Therefore, a long height adjustment nut 51 is designed at this location. When a drill bit with a larger outer diameter needs to be clamped, the height adjustment screw 52 in the height adjustment nut 51 can be unscrewed, and the upper clamping block 42 can be moved upward, thereby increasing the clamping slot size of the clamping mechanism 40. This allows large drill bits to pass smoothly through the clamping mechanism 40 for clamping, ensuring versatility and practicality.

[0046] Specifically, in one embodiment, the chuck mechanism 20, the clamping mechanism 40, and the tip mechanism 30 are spaced apart sequentially along the length of the worktable 10.

[0047] Preferably, in one embodiment, two lifting drive units 43 are provided along the width direction of the worktable 10, and the two lifting drive units 43 are respectively connected to both sides of the upper clamping block 42 through the height adjustment component 50. With this structure, the upper clamping block 42 can be lifted and lowered more smoothly, avoiding the upper clamping block 42 from tilting to one side during lifting and lowering.

[0048] Specifically, in one embodiment, the lifting drive unit 43 is a vertically arranged cylinder.

[0049] Preferably, in one embodiment, the worktable 10 includes a worktable body 11 and an extension worktable 12 connected to one end of the worktable body 11. The chuck mechanism 20 and the clamping mechanism 40 are disposed on the worktable body 11, and the tip mechanism 40 is disposed on the extension worktable 12. The reason for providing the extension worktable 12 is that the product to be processed 200 is too large and too long, making it impossible to directly install the tip mechanism 30 on the worktable body 11. Therefore, in this embodiment, the tip mechanism 30 is installed by adding the extension worktable 12.

[0050] Specifically, in one embodiment, the extended workbench 12 is connected to one end of the workbench body 11 via a connecting plate 13.

[0051] Specifically, in one embodiment, the centering mechanism 30 includes a tailstock 31 and a center 32. The tailstock 31 is disposed on the extended worktable 12, and the center 32 is disposed on the tailstock 31. The tailstock 31 is movable along the extended worktable 12 to adjust the position of the center 32, and the tailstock 31 can be locked onto the extended worktable 12 to fix the position of the center 32. Both the tailstock 31 and the center 32 are well-known structures in machine tools and will not be described in detail here.

[0052] During the installation of the boring and milling fixture 100 and the positioning of the workpiece 200: First, the clamping mechanism 40 is fixed to the worktable 10 along the T-slot, and then pressed and fixed with a pressure plate. Then, the workpiece 200 is clamped by the chuck mechanism 20, and the workpiece 200 is initially fixed by the center mechanism 30. Subsequently, the height adjustment unit 45 is adjusted to calibrate the height of the lower clamping block 41, and the balance adjustment unit 46 is used to ensure the overall balance of the workpiece 200. Finally, the limiting block 47 is installed to complete the precise positioning of the workpiece 200.

[0053] When the boring and milling fixture 100 performs automated clamping and angle switching: the action of the lifting drive unit 43 is controlled by the equipment program code. After the powder discharge groove and horizontal groove in one direction of the product to be processed 200 are processed, the lifting drive unit 43 drives the upper clamping block 42 to lift and release the product to be processed 200. When the product to be processed 200 rotates to the specified angle, the lifting drive unit 43 drives the upper clamping block 42 to descend again to clamp the finished product 200, ensuring multi-directional processing accuracy.

[0054] The boring and milling fixture 100 has the following advantages: Offset prevention and wear compensation: The guide rod 49 is provided to limit the positional offset between the upper clamping block 42 and the lower clamping block 41 when the lifting drive unit 43 moves up and down, thus avoiding machining deviations. In addition, since the rotation of the product to be processed 200 will wear down the lower clamping block 41 and affect dimensional accuracy, a replaceable high-hardness wear-resistant block 48 is installed on the lower clamping block 41. After wear, it can be directly replaced to maintain the tooling performance. After wear, there is no need to repair or replace the entire lower clamping block, reducing maintenance costs and downtime, making maintenance more convenient, and extending the overall service life of the tooling.

[0055] Precise positioning: Through the cooperation of the height adjustment unit 45, the balance adjustment unit 46, the limit block 47 and the guide rod 49, the positional deviation between the product to be processed 200 and the clamping block is effectively controlled, ensuring the dimensional accuracy of boring and milling.

[0056] Highly efficient operation: The automatic clamping and releasing is achieved by relying on the program-controlled cylinder, eliminating the need for repeated manual adjustments. The angle of the product to be processed can be switched easily, greatly improving processing efficiency.

[0057] High stability: The top mechanism 30 clamps, the chuck mechanism 20 holds, and the clamping mechanism 40 clamp to form multiple fixation, combined with the balance adjustment and offset prevention structure, to reduce the shaking of the product 200 to be processed during the processing and ensure processing stability.

[0058] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A boring and milling fixture, characterized in that, This includes the worktable, chuck mechanism, center mechanism, and clamping mechanism; The chuck mechanism is mounted on the worktable and is used to clamp one end of the product to be processed. The top mechanism is set on the worktable and is positioned opposite the chuck mechanism at a distance, so as to press against the other end of the product to be processed. The clamping mechanism is disposed on the worktable and located between the chuck mechanism and the center mechanism, and is used to clamp the middle part of the product to be processed; The clamping mechanism includes a lower clamping block, an upper clamping block, and a lifting drive unit. The upper clamping block is located above the lower clamping block. The lifting drive unit is connected to the upper clamping block and is used to drive the upper clamping block to move up and down. The lower clamping block has a first clamping groove, and the upper clamping block has a second clamping groove. The second clamping groove is positioned opposite the first clamping groove.

2. The boring and milling fixture according to claim 1, characterized in that, The clamping mechanism also includes a base plate, which is disposed on the worktable. The lower clamping block and the lifting drive unit are both disposed on the base plate.

3. The boring and milling fixture according to claim 2, characterized in that, A height adjustment unit is provided between the lower clamping block and the base plate, and the height adjustment unit is used to adjust the height of the lower clamping block.

4. The boring and milling fixture according to claim 3, characterized in that, A balance adjustment unit is also provided between the lower clamping block and the base plate; Along the width direction of the worktable, the height adjustment unit is located at the bottom center of the lower clamping block, and the balance adjustment unit is respectively provided on both sides of the bottom of the lower clamping block.

5. The boring and milling fixture according to claim 4, characterized in that, A limiting block can be detachably placed between the lower clamping block and the base plate.

6. The boring and milling fixture according to claim 1, characterized in that, A wear-resistant block is detachably provided on the wall of the first clamping groove, and the lower clamping block contacts the product to be processed through the wear-resistant block.

7. The boring and milling fixture according to claim 6, characterized in that, The first clamping groove has a bottom wall at the bottom and two side walls connected to both sides of the bottom wall. The two side walls are inclined and the wear-resistant blocks are detachably provided on each of the two side walls.

8. The boring and milling fixture according to claim 1, characterized in that, A guide rod is provided between the upper clamping block and the lower clamping block, and a height adjustment component is provided between the lifting drive unit and the upper clamping block.

9. The boring and milling fixture according to claim 8, characterized in that, The chuck mechanism, the clamping mechanism, and the center point mechanism are spaced apart sequentially along the length of the worktable; Along the width direction of the worktable, there are two lifting drive units, and the two lifting drive units are respectively connected to both sides of the upper clamping block through the height adjustment component.

10. The boring and milling fixture according to claim 1, characterized in that, The worktable includes a worktable body and an extension worktable connected to one end of the worktable body. The chuck mechanism and the clamping mechanism are disposed on the worktable body, and the center point mechanism is disposed on the extension worktable.

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