Timing gear production and machining stabilizing clamp

Abstract

The utility model discloses a stable clamp for production and machining of a timing gear, and belongs to the technical field of production of timing gears. Comprising a mounting seat mounted on a machine table and a connecting rod fixedly connected to the center of the mounting seat, the tray is fixedly connected to one end, far away from the mounting seat, of the connecting rod; the expanding and tightening mechanism is arranged at one end, far away from the connecting rod, of the tray, penetrates through a central through hole of the timing gear and is tightly attached to the inner wall of the through hole through expansion so as to realize positioning; the tensioning mechanism comprises an inverted cone block which is arranged on the side, away from the connecting rod, of the tray and moves to be close to or away from the tray. According to the stable clamp for producing and machining the timing gear, the gear is rapidly and stably fixed through the expanding and tightening mechanism, an adaptive positioning piece does not need to be frequently replaced, the operation process is greatly simplified, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of timing gear production, in particular to a timing gear production and processing stabilizing fixture. Background Art

[0002] Timing gears are used in mechanical devices, particularly internal combustion engines, to perform control functions and achieve precise positioning on a timescale. They coordinate with other components to ensure the synchronized operation of key components within the engine, such as the intake and exhaust systems, crankshaft, and camshaft, thereby enabling proper engine operation. Timing gears, which require high precision, are typically manufactured using cutting processes, including turning, milling, and grinding.

[0003] Chinese utility model patent publication number CN220311995U discloses a fixture for gear production. By using a positioning boss screwed onto a rotating base, it can be replaced according to the size of the gear through-hole, increasing the fixture's flexibility and rapid positioning function, achieving a multi-purpose machine and saving time and effort.

[0004] However, when processing gear blanks with different through-hole sizes, the fixture used for gear production needs to replace the rotating seat in advance to adapt to the through-hole size, which is rather cumbersome. Especially when encountering a specific through-hole diameter, it is impossible to find a suitable rotating seat, which can easily lead to unstable positioning, resulting in reduced production quality and safety hazards during processing. Therefore, the overall operation is cumbersome and has limitations.

[0005] Therefore, a timing gear production and processing stabilizing fixture is provided to solve the above problems. Utility Model Content

[0006] (1) Technical problems solved

[0007] The utility model provides a stable fixture for producing and processing timing gears, aiming to solve the problem in the background art that the existing fixture for gear production needs to replace the positioning piece adapted to the timing gear through hole in advance, resulting in cumbersome operation and limitations.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stable fixture for the production and processing of timing gears, comprising a mounting base for installation on a machine platform, a connecting rod fixedly connected to the center of the mounting base, a tray fixedly connected to the end of the connecting rod away from the mounting base, and a tightening mechanism arranged on the end of the tray away from the connecting rod for passing through the central through hole of the timing gear and expanding to fit tightly against the inner wall of the through hole to achieve positioning; the gear is quickly and firmly fixed by the tightening mechanism without the need for frequent replacement of matching positioning parts, which greatly simplifies the operation process and improves processing efficiency.

[0010] In order to enable the tightening mechanism to achieve the positioning of the timing gear, the tightening mechanism includes an inverted cone block arranged on the side of the tray away from the connecting rod and moving close to or away from the tray, an adjusting bolt rotatably installed on the center of one side of the tray close to the inverted cone block, passing through the center of the inverted cone block and screwed to the inverted cone block, at least three clamping column petals distributed in an annular array surrounding the side of the inverted cone block and slidingly connected to the tray, and an elastic ring rope passing through all the clamping column petals for driving the clamping column petals to approach the inverted cone block; since the clamping column petals are surrounded by the side of the inverted cone block and distributed in an annular array, they can automatically adjust the degree of expansion according to the size of the central through hole of the timing gear, thereby adapting to gears of different specifications.

[0011] Preferably, in order to facilitate the inverted cone block to squeeze the column flap outward when moving toward the pallet, the side of the column flap close to the inverted cone block is matched with the side surface of the inverted cone block; the matched contact surface enables the inverted cone block to squeeze the column flap more effectively, thereby improving the working efficiency of the tightening mechanism. Since the column flap can expand outward smoothly and fit tightly on the inner wall of the center through hole of the timing gear, the timing gear can maintain a more stable fixed state during the processing, which helps to reduce processing errors caused by shaking or displacement and improve processing accuracy.

[0012] Preferably, in order to facilitate the application of force and reduce the difficulty of operation, a handle is inserted into the side of the adjusting bolt; the introduction of the handle significantly reduces the strength requirement for the operator, so that the rotation operation of the adjusting bolt can be easily completed even with less force.

[0013] Preferably, in order to facilitate the disassembly and assembly of the elastic ring rope, a through hole is provided on the clamping column petal to accommodate the elastic ring rope passing through.

[0014] Preferably, in order to improve the stability of the column flap during movement, the column flap has a slide seat on a side close to the tray, and the tray is provided with a slide groove which is consistent with the moving path of the column flap and corresponds to the slide seat; the matching design of the slide seat and the slide groove limits the shaking and deviation of the column flap during movement, thereby improving the stability and reliability of the overall structure.

[0015] Preferably, in order to further ensure the stable positioning of the timing gear on the tray, a pressure block is installed in the end of the clamping column flap away from the tray, which is moved closer to or away from the clamping column flap and is used to press the timing gear away from the tray. The end of the pressure block away from the clamping column flap is penetrated by a locking bolt threadedly connected to the clamping column flap. This design enables the combination of the clamping column flap and the pressure block to adapt to timing gears of different sizes, shapes and positions. By adjusting the position and pressing force of the pressure block, effective pressing of the timing gear can be ensured, thereby improving the adaptability and reliability of the entire transmission system.

[0016] Preferably, the pressure block has a friction pad on one side close to the clamping column petal; the addition of the friction pad significantly increases the friction between the pressure block and the timing gear, so that the pressure block can press the timing gear more firmly.

[0017] (3) Beneficial effects

[0018] The timing gear production and processing stabilizing fixture can quickly achieve stable fixation of the gear through the tightening mechanism, without the need for frequent replacement of matching positioning parts, greatly simplifying the operation process and improving processing efficiency.

[0019] The timing gear production and processing stable fixture, the design of the pressure block enables the combination of the clamping column petal and the pressure block to adapt to timing gears of different sizes, shapes and positions. By adjusting the position and pressing force of the pressure block, the timing gear can be effectively pressed to improve the adaptability and reliability of the entire transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a stable fixture for manufacturing timing gears;

[0021] Figure 2 This is a schematic diagram of the structure of the clamping column petal in a stable fixture for the production and processing of timing gears.

[0022] In the picture:

[0023] 1. Mounting seat;

[0024] 2. Connecting rod;

[0025] 3. Tray; 31. Slide;

[0026] 4. Expansion and tightening mechanism; 41. Clamping column flap; 411. Lock bolt; 412. Perforation; 413. Sliding seat;

[0027] 42. Elastic ring rope; 43. Inverted cone block; 44. Adjustment bolt;

[0028] 5. Pressure block; 51. Friction pad; 6. Handle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 2 The utility model provides a technical solution: a stable fixture for the production and processing of timing gears, comprising a mounting base 1 for installation on a machine platform, a connecting rod 2 fixedly connected to the center of the mounting base 1, a tray 3 fixedly connected to the end of the connecting rod 2 away from the mounting base 1, and an expansion mechanism 4 arranged at the end of the tray 3 away from the connecting rod 2 for passing through the central through hole of the timing gear and expanding to fit the inner wall of the through hole to achieve positioning.

[0032] The tightening mechanism 4 includes an inverted cone block 43 which is arranged on the side of the tray 3 away from the connecting rod 2 and moves closer to or away from the tray 3, an adjusting bolt 44 which is rotatably installed at the center of one side of the tray 3 close to the inverted cone block 43, passes through the center of the inverted cone block 43 and is screwed to the inverted cone block 43, at least three clamping column petals 41 distributed in an annular array around the side of the inverted cone block 43 and slidingly connected to the tray 3, and an elastic ring rope 42 which passes through all the clamping column petals 41 and is used to drive the clamping column petals 41 to approach the inverted cone block 43, wherein the clamping column petals 41 are provided with a through hole 412 for accommodating the elastic ring rope 42 to pass through.

[0033] When in use, first, firmly install the mounting base 1 of the fixture on the machine table to ensure that the fixture as a whole is stable and does not shake. Then, place the timing gear to be processed on the tray 3, and fit the center through hole of the gear on the tightening mechanism 4, and then rotate the adjusting bolt 44 to make it rotate on the tray 3. Since the adjusting bolt 44 is screwed to the inverted cone block 43, the rotation of the adjusting bolt 44 will push the inverted cone block 43 closer to the tray 3, and then squeeze and push the column petal 41 away from the inverted cone block 43 until the side of the inverted cone block 43 is close to the inner wall of the timing gear through hole, thereby pressing the gear to achieve positioning. After the processing is completed, rotate the adjusting bolt 44 in the opposite direction to move it away from the tray 3. As the compression force is released, the column petal 41 will gradually return to the tightened state under the action of the elastic ring rope 42, thereby loosening the pressure on the timing gear. At this time, the processed timing gear can be easily removed.

[0034] Specifically, the side of the clamping column petal 41 close to the inverted cone block 43 is matched with the side surface of the inverted cone block 43; under the combined action of conical extrusion and matching contact, the clamping column petals 41 can expand outward smoothly until they are tightly fitted and supported on the inner wall of the central through hole of the timing gear.

[0035] Furthermore, a handle 6 is inserted into the side of the adjusting bolt 44; by inserting the handle into the side of the adjusting bolt 44, the force originally acting directly on the adjusting bolt can be transferred to the handle, thereby increasing the distance from the line of action of the force to the center of rotation, achieving a labor-saving effect.

[0036] More specifically, the side of the column flap 41 close to the tray 3 has a slide 413, and the tray 3 is provided with a slide groove 31 that is consistent with the moving path of the column flap 41 and corresponds to the slide 413; the slide groove 31 on the tray 3 is a groove with a specific shape and length, and its shape and size match the slide 413, providing a moving track for the slide 413. Due to the close fit between the slide 413 and the slide groove 31, the column flap 41 can maintain a stable trajectory and direction during the movement, thereby achieving precise position adjustment.

[0037] Example 2

[0038] The difference from Example 1 is that a pressure block 5 is installed in the end of the column flap 41 away from the tray 3, which is moved closer to or away from the column flap 41 to press the timing gear away from the tray 3. The end of the pressure block 5 away from the column flap 41 is penetrated by a lock bolt 411 screwed to the column flap 41; when it is necessary to press the timing gear, the operator can rotate the lock bolt 411 to move it toward the inside of the column flap 41. The movement of the lock bolt 411 will push the pressure block 5 to slide along the column flap 41 until the pressure block 5 contacts the timing gear and applies sufficient clamping force. The clamping action of the pressure block 5 on the timing gear can ensure that the timing gear maintains a stable position and state during operation, reducing noise and wear caused by vibration or looseness.

[0039] Furthermore, the pressure block 5 has a friction pad 51 on one side close to the clamping column petal 41; due to the high friction coefficient of the friction pad 51, it will significantly increase the friction between the pressure block 5 and the timing gear, thereby ensuring that the pressure block 5 can firmly press the timing gear to prevent it from sliding or loosening during operation.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A timing gear production and processing fixture, characterized by: It comprises a mounting base (1) for mounting on a machine platform, a connecting rod (2) fixedly connected to the center of the mounting base (1), a tray (3) fixedly connected to the end of the connecting rod (2) away from the mounting base (1), and an expansion mechanism (4) provided at the end of the tray (3) away from the connecting rod (2) for passing through the central through hole of the timing gear and expanding to fit against the inner wall of the through hole to achieve positioning; The tightening mechanism (4) comprises an inverted cone block (43) arranged on a side of the tray (3) away from the connecting rod (2) and moving toward or away from the tray (3), an adjusting bolt (44) rotatably mounted on the center of one side of the tray (3) close to the inverted cone block (43), passing through the center of the inverted cone block (43) and screwed to the inverted cone block (43), at least three clamping column petals (41) distributed in an annular array around the side of the inverted cone block (43) and slidably connected to the tray (3), and an elastic ring rope (42) passing through all the clamping column petals (41) for driving the clamping column petals (41) to approach the inverted cone block (43).

2. The timing gear production and processing fixture according to claim 1, characterized in that: A surface of the clamping column flap (41) close to the inverted cone block (43) is matched with a side surface of the inverted cone block (43).

3. The timing gear production and processing fixture according to claim 2, characterized in that: A handle (6) is inserted into the side of the adjusting bolt (44).

4. The timing gear production and processing fixture according to claim 3 is characterized by: The clamping column flap (41) is provided with a through hole (412) for accommodating the elastic ring rope (42) to pass through.

5. The timing gear production and processing fixture according to claim 4, characterized in that: The clamping column flap (41) has a sliding seat (413) on a side close to the tray (3), and the tray (3) is provided with a sliding groove (31) that is consistent with the moving path of the clamping column flap (41) and corresponds to the sliding seat (413).

6. The timing gear production and processing fixture according to claim 5, characterized in that: A pressure block (5) is installed in the end of the clamping column flap (41) away from the tray (3), which is moved closer to or away from the clamping column flap (41) and is used to press the side of the timing gear away from the tray (3). A locking bolt (411) is passed through the end of the pressure block (5) away from the clamping column flap (41) and is screwed to the clamping column flap (41).

7. The timing gear production and processing fixture according to claim 6, characterized in that: The pressing block (5) has a friction pad (51) on one side close to the clamping column petal (41).

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