Double-end working tool for shafts

Abstract

The utility model relates to the technical field of shaft component machining, particularly to a shaft component double -top frock. Include: a pair of top of long -shaft axial movement adjustment with long -shaft both ends center hole one -to -one realizes positioning, drive assembly is constituted by mounting disc and drive arrangement, and drive arrangement drives mounting disc rotation, one top is installed in mounting disc, and mounting disc is equipped with radially extending groove portion, long -shaft near mounting disc one side has a group of interval setting connecting rod along the circumference, and axially extends into the groove portion, and this frock passes through connecting rod transmission rotation torque, avoids the problem that top and center hole rub and damage, keyway slip, claw disc scratch surface in traditional mode, and combines top cone, mounting disc detachable, control box adjustment parameter etc. design, promotes the clamping efficiency, adaptability and universality, realizes long -shaft high -efficient, stable, nondestructive processing.

Description

Technical Field

[0001] This utility model relates to the field of shaft component processing technology, and in particular to a double-top tooling for shaft components. Background Technology

[0002] In the field of machining, especially for turning, grinding or milling of long shaft components, it is usually necessary to fix the two ends of the long shaft axially and drive it to rotate stably around its own axis.

[0003] Currently, the industry widely adopts a "one-clamp-one-support" machining method for axial clamping and rotational drive of shaft components. This method involves a three-jaw chuck clamping the end of the shaft component at one end, and a tailstock center pressing against the central hole of the shaft component at the other end. The rotation of the three-jaw chuck drives the shaft component to rotate around its axis, thus enabling milling and other machining operations. The three-jaw chuck clamps the shaft component by the radial synchronous movement of its three jaws, while the tailstock center provides axial support to balance the radial force during machining and prevent bending or vibration of the long shaft. However, when the outer surface of the shaft component has been machined to its finished state, the "one-clamp-one-support" method has significant drawbacks: the jaws of the three-jaw chuck are in direct contact with the outer surface of the long shaft, which can easily cause clamping and scratching damage to the finished surface during clamping, resulting in excessive surface roughness and appearance damage, making it difficult to meet the quality requirements of high-precision products. Therefore, a double-support tooling for shaft components is urgently needed to solve these problems. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a double-top tooling for shaft components, which solves the technical problem that existing tooling easily causes clamping and scratching on the surface of finished products when clamping shaft components, resulting in excessive surface roughness and appearance damage.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A double-topped fixture for shaft-like components, used to axially clamp a long shaft and rotate it about its axis, wherein both ends of the long shaft are provided with center holes, comprising: A pair of tops that are axially movable and adjustable along the long axis, with each pair of tops corresponding to a pair of central holes; A drive assembly, comprising: a mounting plate and a drive device, the drive device being used to drive the mounting plate to rotate, wherein one of the tops is mounted on the mounting plate, the mounting plate having a groove extending radially along the mounting plate; A set of connecting rods, wherein the set of connecting rods is located on the side of the long shaft near the mounting plate, the set of connecting rods is spaced apart circumferentially along the long shaft, and the connecting rods extend axially into the groove.

[0006] Based on the above structure, the principle of the double-top tooling for shaft components is as follows: In use, firstly, according to the length and dimensions of the long shaft, adjust the position of a pair of tops so that they align with the center holes at both ends of the long shaft; then, install a set of connecting rods at intervals along the circumference of the long shaft, rotate the mounting plate so that the connecting rods align with the grooves on the mounting plate; next, adjust the position of the pair of tops again so that the center holes at both ends of the long shaft fit onto the corresponding tops, and the connecting rods extend into the corresponding grooves, so that the long shaft is firmly clamped between the pair of tops; then, start the drive device, which drives the mounting plate to rotate, and the mounting plate, through the tops and connecting rods, drives the long shaft to rotate around its axis. According to processing requirements, the long shaft can be processed with corresponding processing equipment. After processing, the drive device is turned off, the position of the pair of tops is adjusted so that the pair of tops are separated from the center holes at both ends of the long shaft, and finally the long shaft is removed from the fixture and the connecting rod is removed from the long shaft. This fixture achieves efficient and stable torque transmission by inserting a set of connecting rods into the groove. The tops are mainly used for positioning, while the rotational torque is borne by a set of connecting rods. This avoids the problem of the tops damaging the center hole or slipping during the rotation of the long shaft due to pure friction between the tops and the center hole or the keyway transmission of torque. At the same time, it avoids the problem of the long shaft surface being pinched or scratched when the traditional claw plate clamps the long shaft.

[0007] Furthermore, in this application, a double-top tooling for shaft components has a top that is conical in shape. As a preferred embodiment of this application, this double-top tooling for shaft components utilizes the self-guiding properties of the top conical surface. During clamping, there is no need to repeatedly adjust the position of the long shaft; centering and clamping can be completed simply by axial advancement, significantly shortening clamping time and improving production efficiency.

[0008] Furthermore, in this application, a double-top tooling for shaft components includes a drive assembly further comprising: a mounting base and a turntable. The turntable is mounted on the mounting base, and a drive device is disposed within the mounting base. The drive end of the drive device is connected to the turntable for transmission. The mounting plate is detachably mounted on the turntable. As a preferred embodiment of this application, the detachable connection between the mounting plate and the turntable in this double-top tooling for shaft components allows for quick replacement of mounting plates of different specifications. When machining long shafts of different sizes or center hole parameters, only the appropriate mounting plate needs to be replaced, without adjusting the entire drive assembly, thus improving the adaptability and flexibility of the tooling.

[0009] Furthermore, in this application, a double-top tooling for shaft components includes a control box on the side of the mounting base. As a preferred embodiment of this application, the control box in this double-top tooling for shaft components allows for the setting and adjustment of operating parameters of the drive device, such as rotation speed, rotation angle, and start / stop time, via a built-in control module or display screen (not shown), to adapt to the processing requirements of long shafts of different sizes and specifications, thereby improving the tooling's versatility.

[0010] Furthermore, in this application, a double-top tooling for shaft components has a protrusion on the top of the mounting plate, and a recess on the mounting plate opposite to the protrusion, the recess accommodating the protrusion. As a preferred embodiment of this application, the double-top tooling for shaft components, with its protrusion and recess engaging, utilizes the guiding effect of the protrusion and recess to allow even non-professional operators to quickly complete the replacement or installation of the top, shortening assembly time, improving tooling changeover efficiency, and simultaneously ensuring the coaxiality of the top and the mounting plate.

[0011] Furthermore, in this application, a double-top tooling for shaft components includes a set of connecting rods detachably mounted on one end of a long shaft near the drive assembly. As a preferred embodiment of this application, the double-top tooling for shaft components, with connecting rods detachably mounted on one end of a long shaft near the drive assembly, allows for flexible replacement of connecting rods of different lengths and diameters according to the diameter of the long shaft, processing requirements, or the position of the groove, ensuring precise fit between the connecting rods and the groove, adapting to various specifications of long shafts, and improving the tooling's versatility.

[0012] Furthermore, a double-top tooling for shaft components in this application further includes: a pin tail seat, the pin tail seat comprising: a pin rod, the pin rod being positioned opposite the mounting plate, and another pin being mounted on the pin rod. As a preferred embodiment of this application, in this double-top tooling for shaft components, the pin rod and the mounting plate of the drive assembly are arranged opposite each other, with the pins respectively mounted on the pin rod and the mounting plate. By engaging with the center holes at both ends of a long shaft, double-end support for the long shaft is achieved. The pin rod is axially adjustable; by adjusting the position of the pin rod, the pin is pushed to press against the end of the long shaft, cooperating with the pin on the mounting plate side to achieve axial clamping of the long shaft, preventing axial movement of the long shaft during rotation or processing.

[0013] As can be seen from the above technical solution, this utility model has the following beneficial effects: The purpose of this utility model is to provide a double-top tooling for shaft components. By setting a pair of axially adjustable tops, the long shaft is positioned. A set of connecting rods spaced circumferentially along the long shaft and extending into the groove of the mounting plate are used to transmit rotational torque. This avoids the problems of easy damage due to friction between the top and the center hole, easy slippage due to keyway transmission, and easy scratching of the long shaft surface by the claw plate clamping in traditional methods. At the same time, combined with the top conical structure, detachable connection of the mounting plate, and control box for adjusting operating parameters, the clamping efficiency, adaptability and versatility are improved, and efficient, stable and non-destructive machining of long shafts is achieved. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the long shaft in a double-top tooling for a shaft component according to an embodiment of this application; Figure 2This is a three-dimensional structural schematic diagram of a double-top tooling for a shaft component in an embodiment of this application; Figure 3 This is an exploded view of the drive assembly in a double-top tooling for a shaft component according to an embodiment of this application; Figure 4 This is a three-dimensional structural diagram of the ejector pin tailstock in a double-top tooling for a shaft component according to an embodiment of this application.

[0015] In the figure: 1-long shaft; 10-center hole; 100-mounting hole; 2-top; 21-protrusion; 3-drive assembly; 31-mounting plate; 310-slot; 311-recess; 32-mounting seat; 33-turntable; 4-connecting rod; 5-control box; 6-ejector tailstock; 61-ejector rod. Detailed Implementation

[0016] like Figure 1 , 2 As shown in Figure 3, a double-top tooling for shaft components is used to axially clamp a long shaft 1 and rotate it about its axis. Both ends of the long shaft 1 are provided with center holes 10. The tooling includes: A pair of tops 2 that are axially movable and adjustable along the long axis 1, and the pair of tops 2 are respectively configured to correspond one-to-one with a pair of center holes 10; The drive assembly 3 includes: a mounting plate 31 and a drive device. The drive device is used to drive the mounting plate 31 to rotate. One of the tops 2 is mounted on the mounting plate 31. The mounting plate 31 is provided with a groove 310, which extends radially along the mounting plate 31. A set of connecting rods 4 are provided on one side of the long shaft 1 near the mounting plate 31. The set of connecting rods 4 are spaced apart circumferentially along the long shaft 1, and the connecting rods 4 extend axially into the groove 310.

[0017] Based on the above structure, the principle of the double-top tooling for shaft components is as follows: In use, firstly, according to the length and dimensions of the long shaft 1, adjust the position of a pair of tops 2 so that they align with the center holes 10 at both ends of the long shaft 1; then, install a set of connecting rods 4 at intervals along the circumference of the long shaft 1, rotate the mounting plate 31 so that the connecting rods 4 align with the grooves 310 on the mounting plate 31; next, adjust the position of the pair of tops 2 again so that the center holes 10 at both ends of the long shaft 1 respectively fit onto the corresponding tops 2, and the connecting rods 4 extend into the corresponding grooves 310, so that the long shaft 1 is firmly clamped between the pair of tops 2; then, start the drive device, which drives the mounting plate 31 to rotate, and the mounting plate 31, through the tops 2 and connecting rods 4, drives the long shaft 1 to rotate around its axis. Rotate the shaft. At this point, the long shaft 1 can be machined using appropriate processing equipment according to processing requirements. After machining, turn off the drive unit, adjust the position of the pair of top rods 2 to separate them from the center holes 10 at both ends of the long shaft 1, and finally remove the long shaft 1 from the fixture and disconnect the connecting rods 4 from it. This fixture achieves efficient and stable torque transmission by inserting a set of connecting rods 4 into the groove 310. The top rods 2 mainly serve a positioning function, while the rotational torque is borne by the set of connecting rods 4. This avoids the problem of damage to the center hole 10 or slippage caused by pure friction between the top rods 2 and the center hole 10 or by keyway torque transmission during rotation of the long shaft 1. It also avoids the problem of pinching and scratching the surface of the long shaft 1 when using a traditional jaw chuck. The set of connecting rods 4 consists of two rods.

[0018] In this embodiment, the top 2 is cone-shaped. Utilizing the self-guiding properties of the cone surface of the top 2, there is no need to repeatedly adjust the position of the long axis 1 during clamping; centering and clamping can be completed simply by axial advancement, significantly shortening clamping time and improving production efficiency.

[0019] In this embodiment, the drive assembly 3 further includes: a mounting base 32 and a turntable 33. The turntable 33 is mounted on the mounting base 32, and the drive device is located inside the mounting base 32. The drive end of the drive device is connected to the turntable 33 for transmission. The mounting plate 31 is detachably mounted on the turntable 33. The detachable connection between the mounting plate 31 and the turntable 33 allows for quick replacement of mounting plates 31 of different specifications. When machining long shafts 1 of different specifications or center hole 10 parameters, only the appropriate mounting plate 31 needs to be replaced, without adjusting the entire drive assembly 3, thus improving the adaptability of the tooling. The drive device can be a motor (not shown), whose drive end can be connected to the turntable 33 for transmission via a gear set (not shown). The mounting plate 31 is detachably mounted on the turntable 33 by screws (not shown).

[0020] In this embodiment, a control box 5 is provided on the side of the mounting base 32. The control box 5 is used to set and adjust the operating parameters of the drive device, such as rotation speed, rotation angle, start and stop time, through the built-in control module or display screen (not shown), so as to adapt to the processing requirements of long shafts 1 of different sizes and specifications and improve the versatility of the tooling.

[0021] In this embodiment, the top 2 mounted on the mounting plate 31 has a protrusion 21, and the mounting plate 31 has a recess 311 opposite to the protrusion 21, the recess 311 being used to accommodate the protrusion 21. The protrusion 21 and the recess 311 cooperate, and with the guiding effect of the protrusion 21 and the recess 311, even non-professional operators can quickly complete the replacement or installation of the top 2, shortening assembly time, improving tooling changeover efficiency, and ensuring the coaxiality of the top 2 and the mounting plate 31. The top 2 mounted on the mounting plate 31 is installed on the mounting plate 31 by screws (not shown).

[0022] In this embodiment, a set of connecting rods 4 are detachably mounted on one end of the long shaft 1 near the drive assembly 3. The detachable mounting of connecting rods 4 on one end of the long shaft 1 near the drive assembly 3 allows for flexible replacement of connecting rods 4 of different lengths and diameters according to the diameter of the long shaft 1, processing requirements, or the position of the groove 310, ensuring precise fit between the connecting rods 4 and the groove 310, adapting to various specifications of long shafts 1, and improving the versatility of the tooling. A set of mounting holes 100 is provided on one end of the long shaft 1 near the mounting plate 31, and a set of connecting rods 4 are respectively inserted into the corresponding mounting holes 100; in other embodiments, the connecting rods 4 can be screwed into the mounting holes 100.

[0023] In this embodiment, as Figure 4 As shown, it also includes: a pin tail seat 6, which includes: a push rod 61, which is positioned opposite the mounting plate 31, and another top 2 is mounted on the push rod 61. The push rod 61 and the mounting plate 31 of the drive assembly 3 are arranged opposite each other. The top 2 is mounted on the push rod 61 and the mounting plate 31 respectively, and provides double-end support for the long shaft 1 by cooperating with the center holes 10 at both ends of the long shaft 1. The push rod 61 can be adjusted axially. By adjusting the position of the push rod 61, the top 2 is pushed to press against the end of the long shaft 1, which, together with the top 2 on the side of the mounting plate 31, achieves axial clamping of the long shaft 1 and prevents axial movement of the long shaft 1 during rotation or processing. The pin tail seat 6 is a manual pin tail seat 6, and the other top 2 is detachably mounted on the end of the push rod 61 near the drive assembly 3 by a screw (not shown).

[0024] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A double-top tooling for shaft components, used to axially clamp a long shaft (1) and rotate it about its axis, wherein both ends of the long shaft (1) are provided with center holes (10), characterized in that: include: A pair of tops (2) that are axially movable and adjustable on the long axis (1), and the pair of tops (2) are respectively provided with a pair of center holes (10); The drive assembly (3) includes: a mounting plate (31) and a drive device. The drive device is used to drive the mounting plate (31) to rotate. One of the tops (2) is mounted on the mounting plate (31). The mounting plate (31) is provided with a groove (310) which extends radially along the mounting plate (31). A set of connecting rods (4) is provided on the side of the long shaft (1) near the mounting plate (31). The set of connecting rods (4) is arranged circumferentially along the long shaft (1). The connecting rods (4) extend axially into the groove (310).

2. The double-top tooling for shaft components according to claim 1, characterized in that: The top (2) is cone-shaped.

3. The double-top tooling for shaft components according to claim 1, characterized in that: The drive assembly (3) further includes: a mounting base (32) and a turntable (33). The turntable (33) is mounted on the mounting base (32). The drive device is located inside the mounting base (32). The drive end of the drive device is connected to the turntable (33) in a transmission connection. The mounting plate (31) is detachably mounted on the turntable (33).

4. The double-top tooling for shaft components according to claim 3, characterized in that: The mounting base (32) has a control box (5) on its side.

5. A double-top tooling for shaft components according to claim 1, characterized in that: A protrusion (21) is provided on the top (2) of the mounting plate (31), and a recess (311) is provided on the mounting plate (31) opposite to the protrusion (21), the recess (311) being used to accommodate the protrusion (21).

6. The double-top tooling for shaft components according to claim 1, characterized in that: A set of the connecting rods (4) are detachably mounted on one end of the long shaft (1) near the drive assembly (3).

7. The double-top tooling for shaft components according to claim 1, characterized in that: Also includes: The ejector pin tail seat (6) includes: a push rod (61) which is positioned opposite the mounting plate (31), and another top (2) which is mounted on the push rod (61).

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