Fixing device for powder metallurgy gear

Abstract

The utility model relates to a powder metallurgy gear fixing device which comprises a base, two receding grooves are formed in the top side of the base, sliding rods are connected in the two receding grooves in a sliding mode, fixing pieces are arranged at the top ends of the sliding rods, a mounting groove is formed in the center in the base, and a driving piece is arranged in the mounting groove. The utility model relates to the technical field of powder metallurgy gear fixing. When the fixing device for the powder metallurgy gear is used, the two clamping plates can be driven by the driving part to fix the powder metallurgy gear, the outer circumferential side of the gear can be clamped and fixed through the obtuse angle sides of the clamping plates, and meanwhile the inner circumferential side of the powder metallurgy gear can be fixed through the cambered surface sides of the clamping plates; and the effect of fixing the inner peripheral side and the outer peripheral side of the powder metallurgy gear is achieved, so that the effect of machining the inner side and the outer side of the powder metallurgy gear is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy gear fixing, in particular to a fixing device for powder metallurgy gears. Background Art

[0002] The proportion of powder metallurgy gears in various machinery, automobiles, and motorcycles is much larger than that of powder metallurgy parts in other fields. Powder metallurgy gears are powder metallurgy parts commonly used in various automobile engines. Through one-time forming and finishing processes, without other post-treatment processes, the dimensional accuracy requirements can be fully met.

[0003] In the prior art, a fixing device for a powder metallurgy gear proposed in the publication number CN220762381U includes a U-shaped fixing seat. A movable cavity is opened in the middle of the upper end of the U-shaped fixing seat. A rotating table is slidably connected inside the movable cavity. A guiding column is fixedly connected to the upper end of the rotating table. A lower support sleeve, a lower support platform, a gear body, an upper support platform, and an upper support sleeve are sequentially sleeved on the outer side wall of the guiding column from top to bottom. The lower end of the lower support platform is fixedly connected to the upper end of the lower support sleeve. A guiding sliding sleeve is fixedly connected to the upper end of the upper support platform. A guiding sliding groove matching the guiding sliding sleeve is opened at the lower end of the upper support sleeve. Four guiding rods distributed in an array are fixedly connected to the lower end of the lower support platform. The powder metallurgy gear fixing device is convenient for fixing the gear body, simple, convenient, and fast to operate, and is convenient for adjusting the angle of the powder metallurgy gear, improving the processing efficiency, and enhancing the practical performance of the fixing device.

[0004] When this application is used, mainly the upper and lower sides of the gear body are restricted, so as to facilitate the fixing of the powder metallurgy gear. However, further fine processing (such as grinding, polishing, and keyway opening, etc.) is required for both the inner and outer sides of the powder metallurgy gear during processing. After the powder metallurgy gear is fixed by this device, the inner peripheral wall is completely blocked, so the processing of the inner peripheral wall of the powder metallurgy gear is affected. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a fixing device for powder metallurgy gears, so as to solve the technical problems mentioned in the above background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A fixing device for powder metallurgy gears includes a base. Two avoidance grooves are opened on the top side of the base. A sliding rod is slidably connected in each of the two avoidance grooves. A fixing member is arranged at the top end of the sliding rod. An installation groove is opened at the center of the base, and a driving member is arranged in the installation groove.

[0008] The fixing member includes a bearing plate, a clamping plate and positioning protrusions. The bearing plate is fixedly installed at the top end of the sliding rod. The clamping plate is fixedly installed on the top side of the bearing plate. One side of the clamping plate close to the axis of the base is set to be an obtuse angle. A number of limiting grooves are formed on the side of the clamping plate where the obtuse angle is set. The side of the bearing plate away from the axis of the base is arc-shaped and is provided with a number of anti-slip grooves. The number of the positioning protrusions is several, and several positioning protrusions are all fixedly installed on the arc-shaped side of the clamping plate and are respectively located between two adjacent anti-slip grooves.

[0009] In a preferred example of the present utility model, it can be further configured that: the driving member includes two racks, the two racks are respectively arranged at the side walls of the long sides of the inner side length of the installation groove, a sliding groove is formed below the avoidance groove, the two racks are respectively slidably installed in the sliding groove, and the two racks are respectively fixedly connected to the two sliding rods.

[0010] In a preferred example of the present utility model, it can be further configured that: a driving gear is rotatably connected to the middle part of the installation groove, and the driving gear meshes with the two racks respectively.

[0011] In a preferred example of the present utility model, it can be further configured that: a driving motor is fixedly installed below the driving gear, and the output end of the driving motor is drivingly connected to the driving gear.

[0012] In a preferred example of the present utility model, it can be further configured that: there is a gap between the obtuse angle side of the clamping plate and the side of the bearing plate, and there is a gap between the arc-shaped side of the clamping plate and the corresponding side of the bearing plate.

[0013] In a preferred example of the present utility model, it can be further configured that: the positioning protrusions are made of rubber or silica gel, and the side walls of the anti-slip grooves are inclined.

[0014] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0015] 1. For the fixing device of a powder metallurgy gear, when in use, the two clamping plates can be driven by the driving member to fix the powder metallurgy gear. The outer peripheral side of the gear can be clamped and fixed by the obtuse angle side of the clamping plate, and at the same time, the inner peripheral side of the powder metallurgy gear can also be fixed by the arc-shaped side of the clamping plate, achieving the effect of being able to fix the inner peripheral side and the outer peripheral side of the powder metallurgy gear, so as to facilitate the processing of the inner side and the outer side of the powder metallurgy gear;

[0016] 2. The fixing device for a powder metallurgy gear is provided with driving gears meshing with two racks respectively. Subsequently, when the driving gears rotate, they can drive the two racks to mesh. It should be noted that the two racks are parallel to each other. Therefore, when the driving gears rotate, they can drive the two racks to move towards each other or in opposite directions, and finally drive the clamping plates to move towards each other or in opposite directions, so as to fix the powder metallurgy gear inside or outside.

[0017] 3. The fixing device for a powder metallurgy gear is provided with the output end of a driving motor drivingly connected to a driving gear, so that the driving gear can drive the driving gear to rotate. Subsequently, it drives the two racks to slide in the corresponding sliding grooves, and then drives the sliding rod and the provided clamping plates to move, facilitating the fixing of the powder metallurgy gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of a fixing device for a powder metallurgy gear of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the base of a fixing device for a powder metallurgy gear of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure at the fixing part of a fixing device for a powder metallurgy gear of the present invention.

[0022] Figure 4 For the present invention Figure 3 in a top view structure schematic diagram.

[0023] In the figure, 1, base; 2, avoidance groove; 3, sliding rod; 4, fixing part; 5, installation groove; 6, driving part; 7, bearing plate; 8, clamping plate; 9, positioning protrusion; 10, limiting groove; 11, anti-slip groove; 12, rack; 13, driving gear; 14, driving motor; 15, sliding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Embodiment:

[0026] Referring to Figures 1-4, a fixing device for a powder metallurgy gear disclosed by the utility model, includes a base 1. Two avoidance grooves 2 are opened on the top side of the base 1. A slide bar 3 is slidably connected in each of the two avoidance grooves 2. A fixing member 4 is arranged at the top end of the slide bar 3. An installation groove 5 is opened at the center of the base 1, and a driving member 6 is arranged in the installation groove 5;

[0027] The fixing member 4 includes a bearing plate 7, a clamping plate 8 and positioning protrusions 9. The bearing plate 7 is fixedly installed at the top end of the slide bar 3. The clamping plate 8 is fixedly installed on the top side of the bearing plate 7. One side of the clamping plate 8 close to the axis of the base 1 is set to be an obtuse angle. A number of limiting grooves 10 are opened on the side of the clamping plate 8 where the obtuse angle is set. The side of the bearing plate 7 away from the axis of the base 1 is arc-shaped and is provided with a number of anti-slip grooves 11. The number of the positioning protrusions 9 is several. A number of the positioning protrusions 9 are all fixedly installed on the arc-shaped side of the clamping plate 8 and are respectively located between two adjacent anti-slip grooves 11.

[0028] In this embodiment, when fixing the gear, if the outer side of the gear is processed, at this time, the driving member 6 drives the two slide bars 3 to move towards each other, and also drives the corresponding bearing plates 7 and clamping plates 8 to move along with the slide bars 3. Then the gear is sleeved on the outer sides of the two clamping plates 8. Then, the driving member 6 drives the two slide bars 3 to move in the opposite direction again. Then, the arc-shaped side of the clamping plate 8 presses against the inner peripheral wall of the powder metallurgy gear. At the same time, the positioning protrusions 9 will be pressed. By continuously pressing the two clamping plates 8, the friction force between the metallurgy gear and the clamping plate 8 is increased, so as to achieve the fixing effect, and thus it is convenient to process the outer side of the gear;

[0029] When processing the inner peripheral wall of the powder metallurgy gear, at this time, the driving member 6 drives the two slide bars 3 to move towards each other, and at the same time drives the bearing plate 7 and the clamping plate 8 to move towards each other, and the powder metallurgy gear is taken off. Then, the driving member 6 drives the two toothed plates to move in the opposite direction again, and the distance between the two clamping plates 8 is moved to be greater than the maximum diameter of the powder metallurgy gear. Then, the powder metallurgy gear is placed between the two clamping plates 8. Then, the driving member 6 drives the clamping plates 8 to move towards each other, so that the obtuse angle side of the clamping plates 8 clamps the outer side of the powder metallurgy gear. There will be protrusions between two adjacent tooth grooves. After the protrusions fit the outer peripheral side of the gear, the powder metallurgy gear is rotated, so that the protrusions fitting the gear are inserted into the tooth grooves of the powder metallurgy gear, thus completing the fixing of the powder metallurgy gear;

[0030] Therefore, when the fixing device fixes and processes the powder metallurgy gear, it can fix the outer peripheral side and the inner peripheral side of the powder metallurgy gear, thereby facilitating the processing of the outer side and the inner peripheral side of the powder metallurgy gear, improving the scope of application, and avoiding affecting the processing of the powder metallurgy gear due to the occlusion of the inner peripheral side of the powder metallurgy gear.

[0031] In a further preferred embodiment of the present invention, as Figure 2 shown, the driving member 6 includes two racks 12, and the two racks 12 are respectively arranged at the side walls of the long sides of the inner side of the installation groove 5. A sliding groove 15 is opened below the avoidance groove 2, and the two racks 12 are respectively slidably installed in the sliding groove 15, and the two racks 12 are respectively fixedly connected to the two sliding rods 3.

[0032] In this embodiment, the two racks 12 provided can move synchronously and need to move towards each other or in opposite directions, so as to facilitate driving the corresponding sliding rod 3 to move. In addition, the sliding groove 15 provided can be used to install the rack 12, so that the rack 12 can slide in the corresponding sliding groove 15. The avoidance groove 2 provided facilitates the insertion of the rack 12 into the sliding groove 15 to be connected to the corresponding rack 12, so that the corresponding sliding rod 3 can be driven to slide by the movement of the rack 12.

[0033] In a further preferred embodiment of the present invention, as Figure 2 shown, a driving gear 13 is rotatably connected to the middle of the installation groove 5, and the driving gear 13 is respectively meshed with the two racks 12.

[0034] In this embodiment, the driving gear 13 provided is respectively meshed with the two racks 12. Subsequently, when the driving gear 13 rotates, the two racks 12 can be driven to mesh. It should be noted that the two racks 12 are parallel to each other. Therefore, when the driving gear 13 rotates, it can drive the two racks 12 to move towards each other or in opposite directions, so as to finally drive the clamping plate 8 to move towards each other or in opposite directions, and further fix the powder metallurgy gear inside or outside.

[0035] In a further preferred embodiment of the present invention, as Figure 2 shown, a driving motor 14 is fixedly installed below the driving gear 13, and the output end of the driving motor 14 is drivingly connected to the driving gear 13.

[0036] In this embodiment, the output end of the driving motor 14 provided is drivingly connected to the driving gear 13, so that the driving gear 13 can drive the driving gear 13 to rotate, and then drive the two racks 12 to slide in the corresponding sliding grooves 15, and further drive the sliding rod 3 and the clamping plate 8 provided to move, so as to facilitate the fixing of the powder metallurgy gear.

[0037] In a further preferred embodiment of the present utility model, as Figures 3-4 shown, a gap is left between the obtuse angle side of the clamping plate 8 and the side of the bearing plate 7, and a gap is left between the arc surface side of the clamping plate 8 and the corresponding side of the bearing plate 7.

[0038] In this embodiment, gaps are respectively left between the obtuse angle side and the arc surface side of the provided clamping plate 8 and the corresponding sides of the bearing plate 7, so that there is a certain bearing space when the powder metallurgy gear is placed between the clamping plates 8, allowing the powder metallurgy gear to be temporarily placed.

[0039] In a further preferred embodiment of the present utility model, as Figures 1-4 shown, the positioning protrusion 9 is made of rubber or silica gel, and the side wall of the anti-slip groove 11 is inclined.

[0040] In this embodiment, the provided positioning protrusion 9 is made of rubber or silica gel. When the clamping plates 8 move in opposite directions, the positioning protrusion 9 can increase the friction between the clamping plates 8 and the powder metallurgy gear when fixing the powder metallurgy gear, thereby improving the stability of the clamping plates 8 in fixing the powder metallurgy gear. The inclined side wall of the anti-slip groove 11 can reduce the width of the end of the protrusion between two adjacent anti-slip grooves 11, so as to facilitate insertion into the tooth grooves of the corresponding powder metallurgy gear for limitation.

[0041] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A powder metallurgy gear fixing device, comprising a base (1), characterized in that: Two avoidance grooves (2) are provided on the top side of the base (1), and a slide bar (3) is slidably connected in each of the two avoidance grooves (2). A fixing member (4) is provided at the top of the slide bar (3). A mounting groove (5) is provided at the center of the base (1), and a driving member (6) is provided in the mounting groove (5); The fixing member (4) comprises a bearing plate (7), a clamping plate (8) and a positioning protrusion (9); the bearing plate (7) is fixedly mounted on the top end of the sliding rod (3); the clamping plate (8) is fixedly mounted on the top side of the bearing plate (7); the side of the clamping plate (8) close to the axis of the base (1) is set at an obtuse angle; the side of the clamping plate (8) located at the obtuse angle is provided with a number of limiting grooves (10); the side of the bearing plate (7) away from the axis of the base (1) is set in an arc shape and is provided with a number of anti-skid grooves (11); the number of the positioning protrusions (9) is several, and the several positioning protrusions (9) are fixedly mounted on the side of the arc surface of the clamping plate (8) and are respectively located between two adjacent anti-skid grooves (11).

2. A powder metallurgy gear fixing device according to claim 1, characterized in that: The driving member (6) includes two racks (12), the two racks (12) are respectively arranged on the side walls of the inner long side of the installation groove (5), a sliding groove (15) is opened below the avoidance groove (2), the two racks (12) are respectively slidably installed in the sliding groove (15), and the two racks (12) are respectively fixedly connected to the two sliding rods (3).

3. A powder metallurgy gear fixing device according to claim 2, characterized in that: A driving gear (13) is rotatably connected to the middle of the installation groove (5), and the driving gear (13) is respectively meshed with the two racks (12).

4. A powder metallurgy gear fixing device according to claim 3, characterized in that: A driving motor (14) is fixedly mounted below the driving gear (13), and an output end of the driving motor (14) is drivingly connected to the driving gear (13).

5. The fixing device for a powder metallurgy gear according to claim 1, characterized in that: A gap is left between the obtuse-angled side of the clamping plate (8) and the side of the bearing plate (7), and a gap is left between the curved side of the clamping plate (8) and the side corresponding to the bearing plate (7).

6. The fixing device for a powder metallurgy gear according to claim 1, characterized in that: The positioning protrusion (9) is made of rubber or silicone material, and the side wall of the anti-slip groove (11) is inclined.

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