A positioning assembly for a machine tool drive wheel clamp

Abstract

The utility model relates to machine tool technical field especially is a kind of positioning assembly of machine tool driving wheel clamping, including main shaft and driving wheel, and the guiding assembly for guiding is equipped between main shaft and driving wheel, and the clamping assembly for clamping is also equipped between main shaft and driving wheel, clamping assembly is symmetrically arranged in the both sides of guiding assembly, clamping assembly includes threaded rod, and the end of threaded rod away from driving wheel is fixedly connected with limiting nut, and the end of threaded rod close to driving wheel is fixedly connected with clamping insertion rod, and symmetrically set up clamping insertion slot with the specification of clamping insertion rod on driving wheel is adapted, and the outside of threaded rod is connected with the positioning nut, in the utility model, when assembling between main shaft and driving wheel, it is aligned quickly by means of guiding structure, and then clamping and fixing are carried out through clamping assembly, the whole installation process does not need to repeatedly adjust hole position and assembly strength is better, when disassembling, it is not necessary to unscrew bolt gradually, significantly reduce operation complexity and time cost.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a positioning component for mounting a machine tool drive wheel. Background Technology

[0002] Machine tools, also known as machining tools, are mechanical equipment used to process workpieces. They use mechanical means such as cutting, grinding, drilling, and tapping to process raw materials or semi-finished products into parts or components with specific shapes, sizes, and surface qualities. Machine tools are an indispensable basic equipment in modern industrial production and are widely used in many fields such as machinery manufacturing, automobiles, aerospace, mold manufacturing, and electronic equipment. The machine tool drive wheel is the core load-bearing component in the machine tool transmission system responsible for transmitting power and driving the operation of key moving parts. The drive wheel needs to be precisely matched with the matching transmission components. Its machining accuracy and assembly accuracy directly determine the positioning accuracy and machining error of the machine tool. It is a key transmission component to ensure the efficient and accurate operation of the machine tool. In the assembly of machine tool drive wheels and spindles, traditional connection solutions generally adopt a "multiple bolts through-type fixing" design. Specifically, bolt holes are made on the rim of the drive wheel and the spindle flange respectively. During installation, the drive wheel needs to be placed against the spindle flange, each set of bolt holes needs to be aligned one by one, and then the bolts need to be inserted and tightened one by one. During disassembly, the bolts need to be loosened one by one in the reverse direction. The overall operation is cumbersome, and the drive wheel and spindle are fixed only by the friction of the bolts. Long-term vibration can easily cause the bolts to loosen, which will aggravate the wear of the components. Therefore, a positioning component for machine tool drive wheel clamping is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a positioning component for mounting a machine tool drive wheel, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A positioning assembly for mounting a machine tool drive wheel includes a spindle and a drive wheel. A guide assembly for guiding is provided between the spindle and the drive wheel, and a mounting assembly for mounting is also provided between the spindle and the drive wheel. The mounting assemblies are symmetrically arranged on both sides of the guide assembly. Each mounting assembly includes a threaded rod. A limit nut is fixedly connected to the end of the threaded rod away from the drive wheel, and a mounting insert is fixedly connected to the end of the threaded rod near the drive wheel. The drive wheel has symmetrically opened mounting slots that are adapted to the specifications of the mounting insert. A positioning nut is threadedly connected to the outer side of the threaded rod. A locking structure is symmetrically provided on the side of the mounting insert away from the threaded rod. The locking structure includes a receiving groove, a locking plate, a reset groove, and a reset spring.

[0005] As a further optimization of this utility model, the guide assembly includes a mounting groove at the end of the spindle, in which a guide cone of the same specifications is fixedly installed.

[0006] As a further optimization of this utility model, the drive wheel is provided with a guide cone groove on the side near the main shaft, and the guide cone groove and the guide cone are configured to be compatible in terms of specifications.

[0007] As a further optimization of this utility model, the main shaft, mounting groove, and guide cone are all coaxially arranged, and the drive wheel and guide cone groove are coaxially arranged.

[0008] As a further optimization of this utility model, the snap-fit ​​structure includes symmetrically arranged receiving grooves on both sides of the snap-fit ​​insert rod, and the receiving grooves are provided with snap-fit ​​plates of matching specifications. The end of the snap-fit ​​plate away from the threaded rod is hinged to the receiving groove through a hinge shaft.

[0009] As a further optimization of this utility model, a reset groove is provided in the receiving groove, the reset groove is located on the side away from the hinge axis, and a reset spring is provided in the inner cavity of the reset groove.

[0010] As a further optimization of this utility model, one end of the reset spring is fixedly connected to the inner end face of the reset groove, and the other end of the reset spring is fixedly connected to the inner side of the snap-fit ​​plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the guide assembly and snap-fit ​​assembly eliminate the need to align the bolt holes one by one during installation. The operator only needs to hold the drive wheel and align the guide cone groove with the guide cone of the spindle. The self-centering property of the cone surface allows for quick initial alignment of the drive wheel and the spindle. Subsequently, pushing the drive wheel causes the snap-fit ​​rod to insert into the snap-fit ​​slot. The snap-fit ​​plate automatically forms an anti-dislodgement structure under the action of the return spring. Finally, tightening the positioning nut completes the fixation. The entire installation process does not require repeated adjustment of the hole positions. During disassembly, simply loosening the positioning nut and squeezing the snap-fit ​​plate allows the drive wheel to be pulled out. There is no need to loosen the bolts one by one, significantly reducing the complexity of operation and time costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rear structure of this utility model; Figure 3 This is a cross-sectional view of the drive wheel of this utility model; Figure 4 This is an exploded view of the structure of this utility model; Figure 5This is a schematic diagram of the structure of the card-mounting component of this utility model; Figure 6 This is a cross-sectional view of the card mounting component of this utility model.

[0013] In the diagram: 1. Main shaft; 2. Drive wheel; 3. Guide assembly; 31. Mounting slot; 32. Guide cone; 33. Guide cone groove; 4. Snap-fit ​​assembly; 41. Threaded rod; 42. Limit nut; 43. Snap-fit ​​insert; 44. Snap-fit ​​slot; 45. Positioning nut; 46. Snap-fit ​​structure; 461. Receiving groove; 462. Snap-fit ​​plate; 463. Reset groove; 464. Reset spring. Detailed Implementation

[0014] 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.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A positioning assembly for mounting a machine tool drive wheel includes a spindle 1 and a drive wheel 2. A guide assembly 3 is provided between the spindle 1 and the drive wheel 2 for guiding. A mounting assembly 4 is also provided between the spindle 1 and the drive wheel 2 for mounting. The mounting assembly 4 is symmetrically arranged on both sides of the guide assembly 3. The mounting assembly 4 includes a threaded rod 41. A limit nut 42 is fixedly connected to the end of the threaded rod 41 away from the drive wheel 2. A mounting insert 43 is fixedly connected to the end of the threaded rod 41 near the drive wheel 2. Mounting slots 44 that are compatible with the specifications of the mounting insert 43 are symmetrically opened on the drive wheel 2. A positioning nut 45 is threadedly connected to the outer side of the threaded rod 41. A mounting structure 46 is symmetrically provided on the side of the mounting insert 43 away from the threaded rod 41. The mounting structure 46 includes a receiving groove 461, a mounting plate 462, a reset groove 463, and a reset spring 464.

[0017] It should be noted that: spindle 1 and drive wheel 2 are the core load-bearing components. The two are precisely docked and stably connected through guide component 3 and clamping component 4, which is suitable for the high speed and high load driving scenarios of machine tools. Spindle 1 ensures stable power transmission during driving, and drive wheel 2 is the core component for power output of machine tools. The wheel body edge is provided with transmission teeth or friction surfaces. Furthermore: The clamping components 4 are symmetrically distributed on both sides of the guide components 3, forming a stable structure of "central guidance + clamping on both sides". Each clamping component 4 independently achieves local clamping and jointly bears the radial and axial forces of the drive wheel 2, preventing the drive wheel 2 from loosening or rotating relative to the spindle 1 during machine operation. Specifically: One end of the threaded rod 41 is welded and fixed to the limiting nut 42 (after welding, flaw detection is performed to ensure no false welds or cracks are found), and the other end is integrally machined with the clamping rod 43 to ensure overall strength and prevent breakage under stress; the outer diameter of the limiting nut 42 is larger than the diameter of the threaded rod 41; the clamping rod 43 is coaxial with the threaded rod 41, has a cylindrical structure, and its surface is hardened to improve wear resistance and avoid dimensional wear caused by long-term insertion and removal, which would affect clamping accuracy; As a further implementation of this solution, the guide assembly 3 includes a mounting groove 31 opened at the end of the main shaft 1, in which a guide cone 32 of the same specification is fixedly installed. A guide cone groove 33 is opened on the side of the drive wheel 2 near the main shaft 1. The guide cone groove 33 and the guide cone 32 are configured to be compatible in specifications. The main shaft 1, the mounting groove 31 and the guide cone 32 are all coaxially arranged. The drive wheel 2 and the guide cone groove 33 are also coaxially arranged. It should be noted that the guide component 3, acting as a "precision positioning guide" during installation, is located in the center area of ​​the contact surface between the spindle 1 and the drive wheel 2. It eliminates radial deviation between the two through the self-centering principle of the conical surface, laying the foundation for the precise docking of the clamping component 4 and avoiding the cumbersome process of "first aligning the holes and then adjusting" in traditional installation. Furthermore, the mounting groove 31 is located at the center of the end of the spindle 1. The groove wall is precision ground, and the bottom of the groove is flat, strictly coaxial with the spindle 1, providing a stable mounting reference for the guide cone 32. The guide cone 32 is press-fitted into the mounting groove 31, and after press-fitting, its end face is ground to ensure that its end face is flush with the reference surface of the spindle 1. The conical surface of the guide cone 32 is polished to ensure that there is no gap when it fits into the guide cone groove 33. The guide cone groove 33 is located at the center of the drive wheel 2 near the spindle 1, and is a conical groove (taper, angle, width) that is perfectly adapted to the guide cone 32. (With consistent busbar length), the groove wall is also precision ground and strictly coaxial with the drive wheel 2. When the guide cone 32 is embedded in the guide cone groove 33, the cone surface automatically corrects the radial deviation between the main shaft 1 and the drive wheel 2, eliminating the need for repeated manual calibration. The main shaft 1, mounting groove 31, and guide cone 32 are coaxial, and the drive wheel 2 is coaxial with the guide cone groove 33. This "double coaxial" design ensures that the guide assembly 3 can directly transmit the coaxial reference during installation, avoiding overall positioning deviation caused by the eccentricity of a single component, and providing a prerequisite for the precise docking of the mounting rod 43 and the mounting slot 44 of the mounting assembly 4. As a further implementation of this solution, the snap-fit ​​structure 46 includes symmetrically opened receiving grooves 461 on both sides of the snap-fit ​​insert 43. The receiving grooves 461 are provided with snap-fit ​​plates 462 of matching specifications. The end of the snap-fit ​​plate 462 away from the threaded rod 41 is hinged to the receiving grooves 461 through a hinge shaft. The receiving grooves 461 are provided with reset grooves 463. The reset grooves 463 are located on the side away from the hinge shaft. The inner cavity of the reset grooves 463 is provided with reset springs 464. One end of the reset springs 464 is fixedly connected to the inner end face of the reset grooves 463, and the other end of the reset springs 464 is fixedly connected to the inner side of the snap-fit ​​plate 462. It should be noted that the snap-fit ​​structure 46, as a "secondary anti-disengagement safety device," is symmetrically arranged on the side of the snap-fit ​​rod 43 away from the threaded rod 41. It enhances the connection stability between the snap-fit ​​rod 43 and the snap-fit ​​slot 44 through mechanical snap-fit, and avoids the snap-fit ​​rod 43 from being dislodged by centrifugal force at high speed. The core components include the receiving groove 461, the snap-fit ​​plate 462, the reset groove 463, and the reset spring 464. Furthermore: the receiving grooves 461 are symmetrically opened on both sides of the end of the mounting rod 43 away from the threaded rod 41, providing sufficient rotational space for the snap-fit ​​plate 462; the end of the snap-fit ​​plate 462 away from the threaded rod 41 is hinged to the receiving groove 461 via a hinge shaft, and the hinge shaft and the snap-fit ​​plate 462 are clearance-fitted to ensure that the snap-fit ​​plate 462 can rotate flexibly around the hinge shaft (rotation angle 0-30°); the reset groove 463 is opened on the side of the receiving groove 461 away from the hinge shaft, the bottom of the groove is flat and parallel to the axis of the receiving groove 461, providing a stable installation space for the reset spring 464 and preventing the spring from shifting when compressed or rebounding; the reset spring 464 is a cylindrical compression spring, one end of which is welded and fixed to the inner end face of the reset groove 463, and the other end is welded to the inner side plane of the snap-fit ​​plate 462; Specifically: In its natural state, the return spring 464 is uncompressed, pushing the end of the snap-fit ​​plate 462 away from the hinge axis to extend out of the receiving groove 461 to form an outward expansion. When the snap-fit ​​rod 43 is inserted into the snap-fit ​​slot 44, the outward expansion end of the snap-fit ​​plate 462 is squeezed by the inner wall of the snap-fit ​​slot 44 and rotates around the hinge axis into the receiving groove 461, while compressing the return spring 464. When the snap-fit ​​rod 43 is fully inserted and the outward expansion end of the snap-fit ​​plate 462 passes through the snap-fit ​​slot 44, the return spring 464 rebounds and pushes the snap-fit ​​plate 462 outward, and it abuts against the outside of the drive wheel 2. When disassembling, the outward expansion end of the snap-fit ​​plate 462 is squeezed to compress the return spring 464 and retract into the receiving groove 461, so that it can be pulled out smoothly. The operation is convenient and the anti-dislodgement effect is reliable.

[0018] Work process: The operator holds the drive wheel 2 and aligns its guide cone groove 33 with the guide cone 32 at the end of the main shaft 1 so that the axes of the two are roughly coincident. The operator slowly pushes the drive wheel 2 and uses the self-centering characteristics of the cone surfaces of the guide cone 32 and the guide cone groove 33 to automatically correct the radial deviation. At this time, the drive wheel 2 and the main shaft 1 are initially aligned. Next, insert the front end of the mounting rod 43 into the mounting slot 44. During the insertion process, the inner wall of the mounting slot 44 presses the outer end of the mounting plate 462, forcing the mounting plate 462 to rotate around the hinge axis receiving groove 461. At the same time, the return spring 464 is compressed until the mounting plate 462 is completely retracted into the receiving groove 461. When the outer end of the mounting plate 462 passes through the mounting slot 44, the outer end of the mounting plate 462 pops out of the receiving groove 461 and is locked against the outside of the drive wheel 2 under the rebound action of the return spring 464, forming a mechanical anti-disengagement structure. At this time, tighten the positioning nut 45 with a wrench to make it fit tightly with the drive wheel 2, ensuring that the mounting rod 43 does not move axially. When disassembly is required, first use a wrench to loosen the positioning nut 45 to eliminate its preload on the spindle 1, squeeze the outer expansion end of the snap-fit ​​plate 462, and force the snap-fit ​​plate 462 to overcome the elastic force of the return spring 464 and retract into the receiving groove 461. At this time, the mechanical lock is released, and the snap-fit ​​rod 43 and the drive wheel 2 can be separated. It is worth noting that the preload of the positioning nut 45, combined with the mechanical locking of the snap-fit ​​structure 46, will not loosen even under long-term vibration. The conical surface of the guide assembly 3 continuously compensates for minor installation errors, ensuring that the coaxiality of the main shaft 1 and the drive wheel 2 remains stable, and avoiding additional torque and abnormal wear caused by eccentricity.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning assembly for mounting a machine tool drive wheel, comprising a spindle (1) and a drive wheel (2), characterized in that: A guide assembly (3) for guiding is provided between the main shaft (1) and the drive wheel (2), and a clamping assembly (4) for clamping is also provided between the main shaft (1) and the drive wheel (2). The clamping assembly (4) is symmetrically arranged on both sides of the guide assembly (3). The mounting assembly (4) includes a threaded rod (41), with a limit nut (42) fixedly connected to one end of the threaded rod (41) away from the drive wheel (2), and a mounting insert (43) fixedly connected to one end of the threaded rod (41) near the drive wheel (2). The drive wheel (2) is symmetrically provided with mounting slots (44) that are compatible with the specifications of the mounting insert (43). A positioning nut (45) is threadedly connected to the outer side of the threaded rod (41). A snap-fit ​​structure (46) is symmetrically provided on the side of the mounting insert (43) away from the threaded rod (41). The snap-fit ​​structure (46) includes a receiving groove (461), a snap-fit ​​plate (462), a reset groove (463), and a reset spring (464).

2. The positioning assembly for mounting a machine tool drive wheel according to claim 1, characterized in that: The guide assembly (3) includes a mounting groove (31) at the end of the spindle (1), in which a guide cone (32) of the same specification is fixedly installed.

3. The positioning assembly for mounting a machine tool drive wheel according to claim 2, characterized in that: The drive wheel (2) has a guide cone groove (33) on the side near the main shaft (1), and the guide cone groove (33) and the guide cone (32) are configured to be compatible in specifications.

4. The positioning assembly for mounting a machine tool drive wheel according to claim 3, characterized in that: The main shaft (1), mounting groove (31) and guide cone (32) are all coaxially arranged, and the drive wheel (2) and guide cone groove (33) are coaxially arranged.

5. A positioning assembly for mounting a machine tool drive wheel according to claim 1, characterized in that: The snap-fit ​​structure (46) includes accommodating grooves (461) symmetrically opened on both sides of the snap-fit ​​insert (43). The accommodating groove (461) is provided with a snap-fit ​​plate (462) of matching specifications. The end of the snap-fit ​​plate (462) away from the threaded rod (41) is hinged to the accommodating groove (461) through a hinge shaft.

6. The positioning assembly for mounting a machine tool drive wheel according to claim 5, characterized in that: A reset groove (463) is provided in the receiving groove (461). The reset groove (463) is located on the side away from the hinge axis. A reset spring (464) is provided in the inner cavity of the reset groove (463).

7. A positioning assembly for mounting a machine tool drive wheel according to claim 6, characterized in that: One end of the reset spring (464) is fixedly connected to the inner end face of the reset groove (463), and the other end of the reset spring (464) is fixedly connected to the inner side of the snap-fit ​​plate (462).

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