High-precision rapid clamping device for gear grinding machine

Abstract

The utility model relates to a high-precision quick clamping device for a gear grinding machine, which is characterized in that a base is fixed on a working table of the gear grinding machine through a bolt, the base and a rotating shaft of the gear grinding machine are coaxially arranged, a taper sleeve is arranged at the top of the base, a processing gear is sleeved on the taper sleeve, and a plurality of clamping jaws are uniformly distributed in the circumferential direction between a taper section of the taper sleeve and the processing gear; the multiple clamping jaws are hooped through annular springs, a cavity is formed in the base, a lifting pull rod is arranged in the cavity, and the pull rod sequentially penetrates through the taper sleeve and the gland from bottom to top and then is locked through a nut. According to the utility model, the pull rod is manually or hydraulically driven to ascend and descend, so that the gear is quickly clamped and disassembled, the clamping time is greatly shortened, the production efficiency is improved, the position of the gear is adjusted when the pull rod descends, the gear is ensured to be coaxial with a rotating shaft of a gear grinding machine, and the machining precision is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of gear grinding technology, specifically to a high-precision and fast clamping device for a gear grinding machine. Background Technology

[0002] Currently, gear grinding machines are one of the key pieces of equipment in gearbox manufacturing, and the efficiency and precision of gear clamping directly affect production efficiency and product quality. Traditional gear clamping methods typically involve manually tapping the gear with a dial indicator to the center of rotation of the gear grinding machine, and then securing it with a clamping plate and screws. This method requires the operator to manually adjust the gear position to ensure it is concentric (coaxial) with the gear grinding machine's rotating shaft, and then fix the gear to the worktable using a clamping plate and bolts. This manual adjustment and locking process is time-consuming (approximately 10-20 minutes), complex to operate, and prone to clamping errors due to human factors, affecting machining accuracy. Therefore, there is an urgent need to design a high-precision, rapid clamping device for gear grinding machines that is efficient, accurate, and reliable. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a high-precision quick clamping device for gear grinding machines. The pull rod is manually or hydraulically driven to lift and lower, realizing the quick clamping and disassembly of gears, which greatly shortens the clamping time and improves production efficiency. The pull rod descends synchronously to adjust the position of the gear, ensuring that the gear is coaxial with the rotating shaft of the gear grinding machine, which significantly improves the machining accuracy.

[0004] The purpose of this utility model is achieved as follows:

[0005] A high-precision, rapid clamping device for a gear grinding machine includes a base fixed to the worktable of the gear grinding machine by bolts. The base is coaxially arranged with the rotary shaft of the gear grinding machine. A tapered sleeve is provided on the top of the base, and the gear being processed is fitted onto the tapered sleeve. Multiple cleats are evenly distributed circumferentially between the tapered section of the tapered sleeve and the gear being processed. The multiple cleats are clamped together by annular springs. The base has an internal cavity, and a liftable pull rod is provided inside the cavity. The pull rod passes through the tapered sleeve and the pressure cap from bottom to top and is then locked by a nut.

[0006] Preferably, the tapered sleeve is fixed to the top of the base by countersunk screws, and the bottom of the tapered sleeve is provided with a positioning step, which is used to position the lower end face of the gear being machined.

[0007] Preferably, the claw has a limiting groove corresponding to the annular spring.

[0008] Preferably, there are multiple annular springs, which are spaced apart along the axial direction of the chuck.

[0009] Preferably, a reset spring is provided at the bottom of the claw, and the reset spring is disposed between the claw and the positioning step.

[0010] Preferably, the pull rod is driven to rise and fall by a hydraulic cylinder, and the extension rod of the hydraulic cylinder is connected to the pull rod.

[0011] Preferably, the hydraulic cylinder is fixed inside the base by a cylinder chassis, and the cylinder chassis and the base are connected by bolts.

[0012] Preferably, the base is also provided with an inspection door.

[0013] Preferably, the pull rod is manually raised and lowered, and the pull rod passes through the cone sleeve and the pressure cap in sequence from bottom to top, and both ends of the pull rod are locked with nuts.

[0014] The beneficial effects of this utility model are:

[0015] The pull rod is lowered manually or hydraulically. The pull rod causes the pressure cover to press down on the chuck. The circumferentially distributed chucks tilt downwards along the conical surface of the cone sleeve. At the same time as the gear is aligned, the chucks open and tension the gear, which plays a role in quick positioning and clamping.

[0016] After the external gear teeth are machined, the pull rod is raised manually or hydraulically. The pull rod drives the pressure plate upward, and the pressure plate no longer squeezes the chuck. The chuck releases the tension between the chuck and the gear's inner hole through the return spring, realizing the rapid disassembly of the machined gear. This greatly shortens the clamping time and improves production efficiency. It avoids the traditional manual hammering operation, reducing the risk of scratches and deformation on the equipment surface. The structure is simple and easy to operate, making it suitable for mass production environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of Embodiment 1 of a high-precision rapid clamping device for a gear grinding machine according to this utility model.

[0018] Figure 2 This is an external view of Embodiment 1 of the present utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of Embodiment 2 of the high-precision rapid clamping device for a gear grinding machine according to the present invention.

[0020] The components include: base 1; cone sleeve 2; chuck 3; pull rod 4; pressure cap 5; machining gear 6; ring spring 7; hydraulic cylinder 8; nut 9; return spring 10; cylinder chassis 11; and inspection door 12. Detailed Implementation Example 1

[0021] See Figure 1 and Figure 2This utility model relates to a high-precision, rapid clamping device for a gear grinding machine, comprising a base 1, a conical sleeve 2, a chuck 3, a pull rod 4, and a pressure cap 5. The base 1 is fixed to the worktable of the gear grinding machine by bolts, and the base 1 is coaxially arranged with the rotary shaft of the gear grinding machine. The top of the base 1 is provided with a conical sleeve 2, which is fixed to the top of the base 1 by countersunk screws. The bottom of the conical sleeve 1 is provided with a positioning step, which is used to position the lower end face of the gear 6 being processed. The conical section of the conical sleeve 2 is evenly distributed circumferentially. There are multiple jaws 3, which are clamped together by annular springs 7. There are three jaws 3, which form an annular inner support jaw. The gear 6 is sleeved on the outside of the inner support jaw. The elastic deformation of the annular spring 7 applies a radial force to the jaw, ensuring that the jaw 3 is in close contact with the tapered section of the tapered sleeve 2. The jaw 3 has an inner tapered surface corresponding to the tapered sleeve 2. When the jaw 3 is pulled down by the pull rod 4, it will slide with the tapered sleeve 2. The three jaws expand outward radially to clamp the gear.

[0022] The claw 3 is provided with a limiting groove corresponding to the annular spring 7. There are multiple annular springs 7, which are distributed at intervals along the axial direction of the claw 3. The base 1 has a built-in cavity, and a pull rod 4 is provided in the cavity. The pull rod 4 is located at the center of the base. The pull rod 4 is driven to rise and fall by a hydraulic cylinder 8. The telescopic rod of the hydraulic cylinder 8 is connected to the pull rod 4. The pull rod 4 passes through the cone sleeve 2 and the pressure cover 5 from bottom to top and is then locked by a nut 9.

[0023] The bottom of the claw 3 is provided with a reset spring 10, which is located between the claw 3 and the positioning step.

[0024] The hydraulic cylinder 8 is fixed inside the base 1 by the cylinder chassis 11, and the cylinder chassis 11 is connected to the base 1 by bolts.

[0025] The base 1 is also provided with an inspection door 12 for regular maintenance of the hydraulic cylinder 8.

[0026] The pull rod 4, located at the center of the base 1, passes through the center of the cone sleeve and the pressure cap, meaning that the base 1, cone sleeve 2, pull rod 4, and pressure cap 5 are coaxially arranged.

[0027] Working principle:

[0028] The gear to be processed is placed on the tapered sleeve at the top of the base. The pull rod is driven downward by the hydraulic cylinder by 5cm. The pull rod drives the pressure cover to press down on the chuck. The circumferentially distributed chuck tilts downward along the tapered surface of the tapered sleeve, automatically adjusting the position of the gear to be processed (the gear to be processed is coaxial with the pull rod, that is, the gear to be processed is coaxial with the rotating shaft of the gear grinding machine). At the same time, the chuck opens up to tension the gear, which plays a role in quick positioning and clamping.

[0029] After the external gear teeth are machined, the extension rod of the hydraulic cylinder extends, and the pull rod drives the pressure plate upward. The pressure plate no longer squeezes the chuck, and the tension between the chuck and the gear inner hole is released by the return spring, realizing the quick disassembly of the machined gear. Example 2

[0030] See Figure 3 This utility model relates to a high-precision quick clamping device for a gear grinding machine, including a base 1, a tapered sleeve 2, chucks 3, a pull rod 4, and a pressure cover 5. The base 1 is fixed to the worktable of the gear grinding machine by bolts. The base 1 is coaxially arranged with the rotary shaft of the gear grinding machine. The tapered sleeve 2 is provided on the top of the base 1 and is fixed to the top of the base 1 by countersunk screws. The bottom of the tapered sleeve 1 is provided with a positioning step, which is used to position the lower end face of the gear 6 being processed. Multiple chucks 3 are evenly distributed around the tapered section of the tapered sleeve 2. The multiple chucks 3 are clamped by annular springs 7. The elastic deformation of the annular springs 7 applies a radial force to the chucks to ensure that the chucks 3 are in close contact with the tapered section of the tapered sleeve 2.

[0031] The claw 3 is provided with a limiting groove corresponding to the annular spring 7. There are multiple annular springs 7, which are distributed at intervals along the axial direction of the claw 3. The base 1 has a built-in cavity, and a pull rod 4 is provided in the cavity. The pull rod 4 is manually raised and lowered. The pull rod 4 passes through the cone sleeve 2 and the pressure cover 5 from bottom to top, and both ends of the pull rod 4 are locked by nuts 9.

[0032] The bottom of the claw 3 is provided with a reset spring 10, which is located between the claw 3 and the positioning step.

[0033] The pull rod 4, located at the center of the base 1, passes through the center of the cone sleeve and the pressure cap, meaning that the base 1, cone sleeve 2, pull rod 4, and pressure cap 5 are coaxially arranged.

[0034] Working principle:

[0035] Place the gear to be processed on the tapered sleeve at the top of the base, rotate the top nut, and the pull rod will drive the pressure cover to press down on the chuck. The circumferentially distributed chucks tilt downward along the tapered surface of the tapered sleeve, automatically adjusting the position of the gear to be processed (the gear to be processed is coaxial with the pull rod, that is, the gear to be processed is coaxial with the rotating shaft of the gear grinding machine). At the same time, the chucks open to tension the gear, which plays a role in quick positioning and clamping.

[0036] After the external gear teeth are machined, the nut is rotated in the opposite direction. The pull rod drives the pressure cap upward, and the pressure cap no longer squeezes the chuck. The chuck releases tension between the chuck and the gear's inner hole via the return spring, thus achieving quick disassembly of the machined gear.

[0037] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A high-precision, rapid clamping device for a gear grinding machine, wherein the base is fixed to the worktable of the gear grinding machine by bolts, and the base is coaxially arranged with the rotary shaft of the gear grinding machine, characterized in that: The base has a tapered sleeve at the top, and the processing gear is fitted on the tapered sleeve. Multiple claws are evenly distributed circumferentially between the tapered section of the tapered sleeve and the processing gear. The multiple claws are clamped by a ring spring. The base has an internal cavity, and a liftable pull rod is provided in the cavity. The pull rod passes through the tapered sleeve and the pressure cap from bottom to top and is locked by a nut.

2. The high-precision rapid clamping device for a gear grinding machine according to claim 1, characterized in that: The tapered sleeve is fixed to the top of the base by countersunk screws. The bottom of the tapered sleeve is provided with a positioning step, which is used to position the lower end face of the gear being machined.

3. The high-precision rapid clamping device for a gear grinding machine according to claim 1, characterized in that: The claw has a limiting groove corresponding to the annular spring.

4. A high-precision, rapid clamping device for a gear grinding machine according to claim 1 or 3, characterized in that: The ring springs are provided in multiples, and the multiple ring springs are distributed at intervals along the axial direction of the chuck.

5. A high-precision, rapid clamping device for a gear grinding machine according to claim 2, characterized in that: The bottom of the chuck is equipped with a reset spring, which is located between the chuck and the positioning step.

6. The high-precision rapid clamping device for a gear grinding machine according to claim 1, characterized in that: The pull rod is driven to rise and fall by a hydraulic cylinder, and the extension rod of the hydraulic cylinder is connected to the pull rod.

7. A high-precision, rapid clamping device for a gear grinding machine according to claim 6, characterized in that: The hydraulic cylinder is fixed inside the base by a cylinder chassis, and the cylinder chassis is connected to the base by bolts.

8. A high-precision, rapid clamping device for a gear grinding machine according to claim 6, characterized in that: The base is also equipped with an inspection door.

9. A high-precision, rapid clamping device for a gear grinding machine according to claim 1, characterized in that: The pull rod is manually raised and lowered. The pull rod passes through the cone sleeve and the pressure cap in sequence from bottom to top, and both ends of the pull rod are locked with nuts.

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