A machining fixture for a pinion shaft

Abstract

The utility model provides a kind of processing fixture of gear shaft belongs to gear shaft processing technical field, including base and the support fixedly installed at the top of base, the top of base is fixedly connected first fixed seat by support, the both sides of first fixed seat are symmetrically provided with rotary clamping part, and the rotary end of rotary clamping part is connected with second fixed seat;Rotary adjusting part is set on first fixed seat and second fixed seat, and the adjusting end of rotary adjusting part is provided with the U-shaped mounting seat of uniform distribution, the driving wheel driven by shaft connection motor is installed on the U-shaped mounting seat on first fixed seat, and the driven wheel is installed on the U-shaped mounting seat on second fixed seat.The utility model is convenient for adjusting the rotation angle of gear shaft, avoids dead angle of spraying, without operator repeatedly disassembling, adjusting workpiece to complete all-around spraying, improves work efficiency and the uniformity of coating.

Description

Technical Field

[0001] This utility model relates to the field of gear shaft machining technology, and more specifically, to a gear shaft machining fixture. Background Technology

[0002] In the field of mechanical manufacturing, gear shafts are core transmission components, and the anti-corrosion coating or decorative spraying treatment on their surface is of utmost importance. The quality of the coating directly affects the service life and performance of the gear shaft.

[0003] A search revealed a Chinese patent application with patent number CN202322913500.1, which discloses a gear shaft machining fixture, including a machining table, a clamping assembly, and an adjusting assembly. The clamping assembly includes a fixed frame, a fixed clamping assembly, and a movable clamping assembly. The two free ends of the fixed frame are fixed to the center sides of the machining table. The fixed clamping assembly includes a base, a support column, and a fixed platform. A V-groove is provided on the top of the fixed platform. The base is located at the center of the machining table. The upper and lower ends of the support column are connected to the base and the fixed platform, respectively. This gear shaft machining fixture can clamp gear shafts of different diameters. Moreover, if the gear shaft has splines, the clamping blocks can assist in positioning the two side walls of the splines by rotating the positive and negative thread screws driven by the motor, further ensuring the stability of the gear shaft clamping. Although the aforementioned patent can achieve the clamping function, it still has the following shortcomings in use: it is not convenient to adjust the rotation angle of the gear shaft, resulting in spraying dead angles. Operators need to repeatedly disassemble and adjust the workpiece to complete all-round spraying, which is inefficient and makes it difficult to guarantee the uniformity of the coating. Utility Model Content

[0004] The purpose of this utility model is to provide a machining fixture for gear shafts to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: A machining fixture for a gear shaft includes a base and a bracket fixedly mounted on the top of the base. The top of the base is fixedly connected to a first fixed seat via the bracket. Rotary clamping portions are symmetrically arranged on both sides of the first fixed seat. The rotating end of the rotary clamping portion is connected to a second fixed seat. Both the first fixed base and the second fixed base are provided with a rotation adjustment part. The adjustment end of the rotation adjustment part is provided with U-shaped mounting seats that are evenly distributed. The U-shaped mounting seats on the first fixed base are each equipped with a drive wheel that is connected to the motor via a shaft. The U-shaped mounting seats on the second fixed base are each equipped with a driven wheel.

[0006] As a preferred technical solution of this application, the rotating clamping part includes a U-shaped connector fixedly installed on the outer side walls of both ends of the first fixed seat, a connecting rod rotatably connected to the U-shaped connector, and the end of the connecting rod away from the U-shaped connector is fixedly connected to the second fixed seat.

[0007] As a preferred technical solution of this application, the top of the base is rotatably connected to symmetrically distributed electric telescopic rods via a connector, and the telescopic ends of the electric telescopic rods are rotatably connected to the middle section of the connecting rod via a connector.

[0008] As a preferred technical solution of this application, the rotation adjustment part includes a first rotating shaft rotatably connected to the first fixed base and evenly distributed, a first gear fixedly disposed on the outer wall of the middle section of the first rotating shaft, a second rotating shaft rotatably connected to the first fixed base and evenly distributed, a second gear fixedly installed at the top of the second rotating shaft, a grip handle fixedly installed at the bottom of one of the second rotating shafts, a clamping plate fixedly disposed at the top of the grip handle, an arc-shaped angle ruler fixedly installed at the bottom of the first fixed base and located above the grip handle, and a fixing bolt that is threadedly connected between the grip handle and the arc-shaped angle ruler.

[0009] As a preferred technical solution of this application, the first gear and the second gear are meshed and connected, the top end of the first rotating shaft is fixedly connected to the U-shaped mounting base, the clamping plate is set to avoid the arc angle ruler, the outer walls of the first gear and the second gear are both provided with a waterproof coating, and the fixing bolt is used with an anti-loosening thread and a nut.

[0010] As a preferred technical solution of this application, the rotation adjustment part installed on the second fixed base has the same structure as the rotation adjustment part located on the first fixed base.

[0011] As a preferred technical solution of this application, both the first fixing base and the second fixing base can be detachably installed with protective covers. The side walls of the protective covers are provided with evenly distributed ventilation holes, and the protective covers are provided with a waterproof coating.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this application, the operator can precisely adjust all U-shaped mounting seats and their drive wheels and driven wheels to deflect synchronously at a specific angle. Combined with the motor starting the drive wheel to drive the gear shaft to rotate, the spray gun can perform uniform spraying on the complex surfaces of the gear shaft (such as gear grooves and shaft shoulders) without any dead angles without moving. This solves the problem in the prior art that traditional fixtures are not convenient for adjusting the rotation angle of the gear shaft, resulting in spraying dead angles. Operators need to repeatedly disassemble and adjust the workpiece to complete all-round spraying, which is inefficient and makes it difficult to guarantee the uniformity of the coating. Attached Figure Description

[0013] Figure 1A schematic diagram of the overall structure of the machining fixture for the gear shaft provided in this application; Figure 2 An exploded view of the machining fixture for the gear shaft provided in this application; Figure 3 A schematic diagram of the main structure of the machining fixture for the gear shaft provided in this application; Figure 4 A partial structural schematic diagram of the machining fixture for the gear shaft provided in this application; Figure 5 A schematic diagram of the rotation adjustment part of the machining fixture for the gear shaft provided in this application; Figure 6 For the machining fixture of the gear shaft provided in this application Figure 5 Enlarged view of the A-structure.

[0014] The image shows: 1. Base; 2. Bracket; 3. First fixed seat; 4. Rotary clamping part; 401. U-shaped connector; 402. Connecting rod; 5. Second fixed seat; 6. Rotary adjustment part; 601. First rotating shaft; 602. First gear; 603. Second rotating shaft; 604. Second gear; 605. Handle; 606. Clamping plate; 607. Arc-shaped angle gauge; 608. Fixing bolt; 7. U-shaped mounting seat; 701. Drive wheel; 702. Driven wheel; 8. Electric telescopic rod; 9. Protective cover. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0016] like Figure 1-6 As shown, the gear shaft machining fixture proposed in this embodiment includes a base 1 and a bracket 2 fixedly installed on the top of the base 1. The fixture is characterized in that the top of the base 1 is fixedly connected to a first fixed seat 3 through the bracket 2, and rotating clamping parts 4 are symmetrically arranged on both sides of the first fixed seat 3. The rotating end of the rotating clamping part 4 is connected to a second fixed seat 5.

[0017] Both the first fixed seat 3 and the second fixed seat 5 are provided with a rotation adjustment part 6. The adjustment end of the rotation adjustment part 6 is provided with U-shaped mounting seats 7 evenly distributed. The U-shaped mounting seats 7 on the first fixed seat 3 are each equipped with a drive wheel 701 driven by a motor connected by a shaft. The U-shaped mounting seats 7 on the second fixed seat 5 are each equipped with a driven wheel 702.

[0018] In this embodiment, like Figure 2-5As shown, the rotating clamping part 4 includes a U-shaped connector 401 fixedly installed on the outer side walls of both ends of the first fixed base 3, and a connecting rod 402 rotatably connected to the U-shaped connector 401, with one end of the connecting rod 402 away from the U-shaped connector 401 fixedly connected to the second fixed base 5.

[0019] like Figure 3 As shown, to further illustrate, the top of the base 1 is rotatably connected to symmetrically distributed electric telescopic rods 8 via connectors. The telescopic ends of the electric telescopic rods 8 are rotatably connected to the middle section of the connecting rod 402 via connectors. In the actual product, the connectors are shafts, and their installation method is a common existing technology.

[0020] like Figure 4-6 As shown, the rotation adjustment unit 6 includes a first rotating shaft 601 rotatably connected to the first fixed base 3 and evenly distributed, a first gear 602 fixedly disposed on the outer wall of the middle section of the first rotating shaft 601, a second rotating shaft 603 rotatably connected to the first fixed base 3 and evenly distributed, a second gear 604 fixedly installed at the top of the second rotating shaft 603, a grip handle 605 fixedly installed at the bottom of one of the second rotating shafts 603, a locking plate 606 fixedly disposed at the top of the grip handle 605, an arc-shaped angle ruler 607 fixedly installed at the bottom of the first fixed base 3 and located above the grip handle 605, and a fixing bolt 608 threadedly connected between the grip handle 605 and the arc-shaped angle ruler 607.

[0021] Among them, the first gear 602 and the second gear 604 are meshed and connected, the top of the first rotating shaft 601 is fixedly connected to the U-shaped mounting base 7, the clamping plate 606 is set to avoid the arc angle ruler 607, the outer walls of the first gear 602 and the second gear 604 are both provided with waterproof coating, and the fixing bolt 608 is used with anti-loosening thread and nut.

[0022] In the actual product, the rotation adjustment part 6 installed on the second fixed base 5 has the same structure as the rotation adjustment part 6 located on the first fixed base 3. For example... Figure 1-3 As shown, both the first fixed base 3 and the second fixed base 5 can be detachably installed with protective covers 9. The side walls of the protective covers 9 are provided with evenly distributed ventilation holes, and the protective covers 9 are provided with a waterproof coating.

[0023] When using the machining fixture for this gear shaft: First, the operator loosens the fixing bolts 608 on the rotation adjustment part 6 installed on the first fixed seat 3 and the second fixed seat 5 respectively, so that the grip handle 605 and the clamping plate 606 can rotate freely and release the angle lock. By manually rotating the grip handle 605 mounted on the first fixed base 3, the grip handle 605 drives one of the second rotating shafts 603 mounted on the first fixed base 3 to rotate. The second gear 604 fixed on the second rotating shaft 603 rotates accordingly. Since all the first gears 602 and the second gears 604 mesh in sequence to form a synchronous transmission system, the first rotating shafts 601 in the same group mounted on the first fixed base 3 drive the drive wheel 701 to rotate synchronously and at the same angle. The operator observes the scale indicated on the arc angle ruler 607 on the edge of the chuck plate 606. When the predetermined angle is reached, the rotation is stopped and the fixing bolt 608 is tightened immediately. The grip handle 605 and the arc angle ruler 607 are fastened together by friction, thereby locking the rotation adjustment part 6 mounted on the first fixed base 3 and preventing the drive wheel 701 from deviating during the processing. By manually rotating the grip handle 605 mounted on the second fixed base 5, the grip handle 605 drives one of the second rotating shafts 603 mounted on the second fixed base 5 to rotate. The second gear 604 fixed on the second rotating shaft 603 rotates accordingly. Since all the first gears 602 and the second gears 604 mesh in sequence to form a synchronous transmission system, the first rotating shafts 601 of the same group mounted on the second fixed base 5 drive the driven wheel 702 to rotate synchronously and at the same angle. The operator observes the scale indicated on the arc angle ruler 607 on the edge of the chuck plate 606. When the predetermined angle is reached, the rotation is stopped and the fixing bolt 608 is tightened immediately. The grip handle 605 and the arc angle ruler 607 are fastened together by friction, thereby locking the rotation adjustment part 6 mounted on the second fixed base 5 and preventing the driven wheel 702 from shifting during the processing. Repeat the operation steps to adjust the rotation adjustment part 6 installed on the other set of second fixed seats 5 to the same angle and lock it, so that the U-shaped mounting seat 7 installed on the first fixed seat 3 and the two sets of second fixed seats 5 are adjusted to the exact same angle. Then, the operator places the gear shaft to be sprayed horizontally on a row of drive wheels 701 on the first fixed seat 3; the operator starts the electric telescopic rod 8 through the operation panel, the piston rod of the electric telescopic rod 8 extends, pulls the connecting rod 402, and causes the second fixed seat 5 installed at one end of the connecting rod 402 to close around the axis of the U-shaped connector 401 toward the first fixed seat 3. As the two sets of second fixed seats 5 close, the driven wheel 702 presses against the side wall of the gear shaft from both sides, forming a stable V-shaped support and clamping together with the drive wheel 701. At this time, the gear shaft is firmly clamped between the drive wheel 701 and the driven wheel 702, and the axis remains horizontal. The motor connected to the drive wheel 701 is started, and the drive wheel 701 begins to rotate at a constant speed under the drive of the motor. Relying on friction, the drive wheel 701 drives the clamped gear shaft to rotate around its own axis while rotating; Operate the spray gun to apply paint to the surface of the slowly rotating gear shaft at a specific rotation angle. Because the gear shaft can be rotated while the rotation angle can be controlled, the spray gun jet can easily cover all complex surfaces of the gear, such as the tooth surface, tooth root, shaft shoulder, and platform shoulder, achieving seamless spraying in a single clamping operation. After the spraying is completed, stop the motor and spray gun, adjust the rotation adjustment part 6 back to the zero position, control the piston rod of the electric telescopic rod 8 to retract, thereby opening the two sets of second fixed seats 5, and the processed gear shaft can be easily removed.

[0024] The above embodiments are only used to illustrate the present invention in detail with reference to the above embodiments. However, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A machining fixture for a gear shaft, comprising a base (1) and a bracket (2) fixedly mounted on the top of the base (1), characterized in that, The top of the base (1) is fixedly connected to the first fixed seat (3) via the bracket (2). The first fixed seat (3) is symmetrically provided with rotating clamping parts (4) on both sides. The rotating end of the rotating clamping part (4) is connected to the second fixed seat (5). Both the first fixed seat (3) and the second fixed seat (5) are provided with a rotation adjustment part (6). The adjustment end of the rotation adjustment part (6) is provided with U-shaped mounting seats (7) evenly distributed. The U-shaped mounting seats (7) on the first fixed seat (3) are all equipped with drive wheels (701) driven by motors connected by shafts. The U-shaped mounting seats (7) on the second fixed seat (5) are all equipped with driven wheels (702).

2. The gear shaft machining fixture according to claim 1, characterized in that, The rotating clamping part (4) includes a U-shaped connector (401) fixedly installed on the outer side wall of both ends of the first fixed seat (3) and a connecting rod (402) rotatably connected to the U-shaped connector (401), and the end of the connecting rod (402) away from the U-shaped connector (401) is fixedly connected to the second fixed seat (5).

3. The gear shaft machining fixture according to claim 2, characterized in that, The top of the base (1) is rotatably connected to symmetrically distributed electric telescopic rods (8) via a connector. The telescopic ends of the electric telescopic rods (8) are rotatably connected to the middle section of the connecting rod (402) via a connector.

4. The gear shaft machining fixture according to claim 1, characterized in that, The rotation adjustment part (6) includes a first rotating shaft (601) rotatably connected to the first fixed seat (3) and evenly distributed, a first gear (602) fixedly disposed on the outer wall of the middle section of the first rotating shaft (601), a second rotating shaft (603) rotatably connected to the first fixed seat (3) and evenly distributed, a second gear (604) fixedly installed on the top of the second rotating shaft (603), a grip handle (605) fixedly installed on the bottom of one of the second rotating shafts (603), a clamping plate (606) fixedly disposed on the top of the grip handle (605), an arc-shaped angle ruler (607) fixedly installed on the bottom of the first fixed seat (3) and located above the grip handle (605), and a fixing bolt (608) threadedly connected between the grip handle (605) and the arc-shaped angle ruler (607).

5. A machining fixture for a gear shaft according to claim 4, characterized in that, The first gear (602) and the second gear (604) are meshed and connected. The top of the first shaft (601) is fixedly connected to the U-shaped mounting base (7). The clamping plate (606) is set to avoid the arc-shaped angle ruler (607). The outer walls of the first gear (602) and the second gear (604) are both provided with a waterproof coating. The fixing bolt (608) is used with an anti-loosening thread and a nut.

6. The gear shaft machining fixture according to claim 4, characterized in that, The rotation adjustment part (6) installed on the second fixed base (5) has the same structure as the rotation adjustment part (6) located on the first fixed base (3).

7. A machining fixture for a gear shaft according to claim 6, characterized in that, Both the first fixed base (3) and the second fixed base (5) can be detachably installed with protective covers (9). The side walls of the protective covers (9) are provided with evenly distributed ventilation holes, and the protective covers (9) are provided with a waterproof coating.

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