Gear shaft clamp

Abstract

The utility model discloses a gear shaft clamp, including mounting seat and fixed in the mounting seat's mounting plate, be provided with the through -hole of upper and lower through in the mounting plate, and the curved surface in the through -hole isohedral and is provided with a plurality of big sliding slot, and every big sliding slot is equipped with a clamping assembly respectively, the utility model discloses the pressing plate in four clamping assemblies to lock gear shaft, and the face of pressing plate pasted in gear shaft is cambered surface, to increase the contact area, avoid to press the gear shaft, and the pressing plate in the utility model is easy to dismouting replacement, to adapt to different specifications diameter's gear shaft, and the versatility is better, the utility model discloses to gear shaft will carry out pre -clamping first and then actual clamping, namely, after the pressing plate contact gear shaft, the slide seat of installing the pressing plate does not actually drive the pressing plate movement in the later part of stroke, so as to facilitate staff to observe whether having installed the gear shaft of adaptive size, further avoid to press the gear shaft.

Description

Technical Field

[0001] This utility model relates to the field of gear shaft technology, and in particular to a gear shaft clamp. Background Technology

[0002] During the machining, subsequent quality inspection, and precision testing of gear shafts, fixtures are usually required for fixation. However, since the sizes and models of various gear shafts are different, different types of fixtures are needed to clamp the gear shafts, which increases the machining cost.

[0003] To address the aforementioned issues, CN202320155280.8 discloses a cylindrical gear clamp with adjustable shaft diameter. This clamp uses four movable clamping blocks to lock the gear shaft. However, this device has certain shortcomings that require improvement. For example, the contact surface between the clamping blocks and the workpiece is flat, which can easily damage the workpiece when clamping it. In addition, the clamp also has a built-in motor, which requires power to operate, limiting its versatility. Furthermore, the motor raises the height of the clamped workpiece. Therefore, improvements are needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a gear shaft clamp to solve the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a gear shaft clamp, including a mounting base and a mounting plate fixed in the mounting base, wherein the mounting plate is provided with a through hole that runs vertically through the inside, and several large sliding grooves are provided at equal angles in the curved surface of the through hole, and a clamping component is installed in each of the large sliding grooves. The clamping assembly includes a slide block slidably connected to the large slide groove, and a pressure plate is installed inside the slide block. The side of the pressure plate near the axis of the through hole is an arc surface. The mounting base is rotatably connected to a drive rod on its side, and also includes a clamping assembly that drives the sliding blocks to move inward and outward via the drive rod.

[0006] Preferably, the slide block has a small groove on the side near the axis of the through hole, and the lower end of the pressure plate has a slide plate that is slidably connected to the small groove. The pressure plate is provided in multiple sets, and the diameter of the arc surface inside the pressure plate in different sets is different.

[0007] Preferably, the bottom surface of the small slide groove is further provided with a spring groove, and the bottom surface of the spring groove is connected to a top plate by a spring, the top plate being attached to the slide plate.

[0008] Preferably, when the slide plate is attached to the bottom surface of the small slide groove, the arc surface inside the pressure plate connected to the slide plate still extends to the outside of the slide block.

[0009] Preferably, the slide is provided with four groups of equally spaced slides.

[0010] Preferably, the mounting base has a vertically penetrating mounting groove, the mounting plate is fixed in the mounting groove, and the clamping assembly includes two horizontal plates slidably connected in the mounting groove and distributed front to back. There is a 45° angle between the horizontal plates and the slide block, and the horizontal plates have transverse sliding grooves. Two push plates are slidably connected in each transverse sliding groove. The lower end of the slide block is integrally formed with an insert block. The insert blocks in two slide blocks at the same front to back position are inserted into the two push plates in one of the horizontal plates. The mounting slot is also rotatably connected to two threaded shafts distributed to the left and right. The threaded shafts are machined with two opposite threads and are respectively threaded to the two horizontal plates. Synchronous pulleys are mounted on the two threaded shafts and are connected to each other by a synchronous belt. The drive rod is fixedly connected to one of the threaded shafts.

[0011] Preferably, a lever is hinged to the drive rod.

[0012] This utility model provides a gear shaft clamp, which has the following beneficial effects: This utility model uses pressure plates in four clamping components to lock the gear shaft. The surface of the pressure plate that is attached to the gear shaft is curved to increase the contact area and avoid damaging the gear shaft. In addition, the pressure plates in this utility model are easy to disassemble and replace to adapt to gear shafts of different diameters, and have good versatility. This invention pre-clamps the gear shaft before actually clamping it. That is, after the pressure plate contacts the gear shaft, the slide of the pressure plate does not actually drive the pressure plate to move during a portion of the subsequent stroke. This allows the operator to observe whether a gear shaft of the appropriate size has been installed, and further avoids damaging the gear shaft. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance of this utility model; Figure 2 yes Figure 1 An enlarged schematic diagram of one of the slides; Figure 3 This is a schematic diagram of the appearance of this utility model from another perspective; Figure 4 This is a schematic diagram of the appearance of a slide block in this utility model.

[0014] In the picture: 11. Mounting base; 12. Mounting plate; 13. Through hole; 21. Slide; 22. Pressure plate; 23. Slide plate; 24. Top plate; 31. Horizontal plate; 32. Push plate; 33. Insert block; 34. Threaded shaft; 35. Synchronous belt; 41. Drive rod; 42. Lever. Detailed Implementation

[0015] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Reference Figures 1-4 According to an embodiment of the present invention, a gear shaft clamp includes a mounting base 11 and a mounting plate 12 fixed in the mounting base 11. The mounting plate 12 is provided with a through hole 13 that runs vertically through the shaft. Several large sliding grooves are provided at equal angles in the curved surface of the through hole 13. Each of the large sliding grooves is equipped with a clamping component.

[0020] The shaft of the gear shaft can be inserted into the through hole 13 and clamped by each of the clamping components for subsequent quality inspection or processing.

[0021] Specifically, such as Figure 1 As shown, the clamping assembly includes a slide block 21 slidably connected within the large slide groove, a pressure plate 22 installed inside the slide block 21, the side of the pressure plate 22 near the axis of the through hole 13 being an arc surface, and a drive rod 41 rotatably connected to the side of the mounting base 11. It also includes a clamping assembly that drives each slide block 21 to move inward and outward through the drive rod 41. When the pressure plate 22 locks the gear shaft, the contact surface between the pressure plate 22 and the gear shaft is an arc surface to increase the contact area and avoid crushing.

[0022] Furthermore, multiple sets of pressure plates 22 are provided, with different arc diameters in different sets of pressure plates 22 to adapt to gear shafts of different specifications. In order to facilitate the replacement of different sets of pressure plates 22, a small sliding groove is provided on the side of the slide block 21 near the axis of the through hole 13. The lower end of the pressure plate 22 is integrally formed with a sliding plate 23 that is slidably connected in the small sliding groove. The operator can directly push the pressure plate 22 inward to make the sliding plate 23 disengage from the small sliding groove and from the slide block 21 for replacement.

[0023] In a second embodiment of the gear shaft clamp, to prevent workers from mistakenly selecting the pressure plate 22 and damaging the gear shaft, the slide block 21 is designed such that a spring groove is provided in the bottom surface of the small slide groove, and a top plate 24 is connected to the bottom surface of the spring groove by a spring. The top plate 24 is attached to the slide plate 23. When the slide plate 23 is attached to the bottom surface of the small slide groove, the top plate 24 is completely retracted into the spring groove, and the arc surface of the pressure plate 22 connected to the slide plate 23 extends to the outside of the slide block 21.

[0024] With the design of the top plate 24, the pressure plate 22 is in a pre-compression state when it first contacts the gear shaft, so that the operator can observe whether the arc surface inside the pressure plate 22 is compatible with the gear shaft. Then the slide block 21 continues to move inward. During this process, the spring is gradually compressed. When the slide plate 23 is attached to the bottom surface of the small slide groove, the gear shaft held by the pressure plate 22 is completely clamped.

[0025] The slide block 21 is provided with four sets of equally angled distributions. The mounting base 11 is provided with a vertically penetrating mounting groove. The mounting plate 12 is fixed in the mounting groove. The specific components of the clamping assembly include two horizontal plates 31 that are slidably connected to the mounting groove and distributed front and back. There is a 45° angle between the horizontal plate 31 and the slide block 21. The horizontal plate is provided with a transverse sliding groove. Two push plates 32 are slidably connected in each transverse sliding groove. The lower end of the slide block 21 is integrally formed with an insert block 33. The insert blocks 33 in two slide blocks 21 that are in the same front and back position are inserted into the two push plates 32 in one horizontal plate 31. The mounting groove is also rotatably connected to two threaded shafts 34 distributed on the left and right. The threaded shafts 34 have two opposite threads machined in them and are respectively threaded to the two horizontal plates 31. Each of the two threaded shafts 34 is equipped with a synchronous pulley, and the two synchronous pulleys are connected by a synchronous belt 35. The drive rod 41 is fixedly connected to one of the threaded shafts 34.

[0026] When the operator drives the drive rod 41 to rotate, the two threaded shafts 34 rotate synchronously under the action of the synchronous belt 35, so that the two horizontal plates 31 move towards each other. When the two horizontal plates 31 are close to each other, the push plate 32 will move inward and the slide block 33 will move inward to perform clamping work. When the two horizontal plates 31 are far apart, the push plates 32 will move away from each other, so that the slide block 33 will drive the slide block 21 to move outward, thereby realizing the position control of the pressure plate 22.

[0027] Furthermore, to facilitate the operator's control of the rotation of the drive rod 41, a lever 42 is hinged to the drive rod 41, allowing the operator to rotate the drive rod 41 by using the lever 42.

[0028] It should be noted that extension plates are provided on both sides of the mounting base 11, and through holes are provided in the extension plates to facilitate the installation of fasteners and the fixing of the mounting base 11. Each of the threaded shafts 34 can be provided with two synchronous pulleys distributed in the front and back. The synchronous pulleys in the same front and back position can be connected by the synchronous belt 35 to increase the connection stability. This is a conventional setting in the prior art and will not be described in detail here.

[0029] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A gear shaft clamp, comprising a mounting base (11) and a mounting plate (12) fixed within the mounting base (11), characterized in that: The mounting plate (12) is provided with a through hole (13) that runs vertically through it, and several large sliding grooves are provided at equal angles in the curved surface of the through hole (13), and a clamping component is installed in each of the large sliding grooves. The clamping assembly includes a slide block (21) slidably connected to the large slide groove, and a pressure plate (22) is installed inside the slide block (21). The side of the pressure plate (22) near the axis of the through hole (13) is an arc surface. The mounting base (11) is rotatably connected to a drive rod (41) on its side, and also includes a clamping assembly that drives each slide (21) to move inward and outward via the drive rod (41).

2. The gear shaft clamp according to claim 1, characterized in that: The slide block (21) has a small groove on the side near the axis of the through hole (13), and the lower end of the pressure plate (22) is integrally formed with a slide plate (23) that is slidably connected in the small groove. The pressure plate (22) is provided in multiple sets, and the diameter of the arc surface inside the pressure plate (22) of different sets is different.

3. A gear shaft clamp according to claim 2, characterized in that: The bottom surface of the small slide groove is also provided with a spring groove, and the bottom surface of the spring groove is connected to a top plate (24) by a spring. The top plate (24) is attached to the slide plate (23).

4. A gear shaft clamp according to claim 3, characterized in that: When the slide plate (23) is attached to the bottom surface of the small slide groove, the arc surface inside the pressure plate (22) connected to the slide plate (23) still extends to the outside of the slide block (21).

5. A gear shaft clamp according to claim 1, characterized in that: The slide (21) is provided with four sets of equally angularly distributed slides.

6. A gear shaft clamp according to claim 5, characterized in that: The mounting base (11) is provided with a vertically penetrating mounting groove. The mounting plate (12) is fixed in the mounting groove. The clamping assembly includes two horizontal plates (31) that are slidably connected in the mounting groove and distributed in front and behind. There is a 45° angle between the horizontal plate (31) and the slide (21). The horizontal plate (31) is provided with a transverse sliding groove. Two push plates (32) are slidably connected in each transverse sliding groove. The lower end of the slide (21) is integrally formed with an insert (33). The insert (33) in the two slides (21) at the same front and rear position is inserted into the two push plates (32) in one of the horizontal plates (31). The mounting groove is also rotatably connected to two threaded shafts (34) distributed on the left and right. The threaded shafts (34) have two opposite threads machined in them and are respectively threaded to the two horizontal plates (31). The two threaded shafts (34) are equipped with synchronous pulleys and are connected to each other by a synchronous belt (35). The drive rod (41) is fixedly connected to one of the threaded shafts (34).

7. A gear shaft clamp according to claim 1, characterized in that: A lever (42) is hinged to the drive rod (41).

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