CN103962655A - Elastic clamping tool of cylindrical gears - Google Patents

Abstract

The invention discloses a cylindrical gear elastic clamping tool, comprising an inner bushing (1), an elastic foot (2), an elastic foot locking cylinder (3), an upper tooling base (4), the inner bushing (1) There are many small holes in the radial direction. One end of the elastic foot (2) is straight, and the other end is a small elbow. Put the small elbow of the elastic foot (2) into the inner bushing (1) respectively. In the small hole, the elastic foot locking cylinder (3) is installed in the inner bushing (1), and the elastic foot locking cylinder (3) fixes the straight end of the elastic foot (2) on the inner wall of the inner bushing (1) , the inner bushing (1), the elastic foot (2), and the elastic locking cylinder (3) are installed in the hole of the upper tooling base (4). The beneficial effect is that the elastic clamping tool provided by the invention can solve the problem of damage to the tooth profile surface caused by hard contact clamping, because the elastic clamping will not cause scratches or indentations to the tooth profile of the copper cylindrical gear. At the same time, the design and manufacture of tooling in production is very simple, small in size, occupies less work area, and the assembly and production operation is also very convenient.

Description

A cylindrical gear elastic clamping tool

technical field

The invention relates to a clamping tool, in particular to a cylindrical gear elastic clamping tool.

Background technique

The clamping device is a very common device in mechanical processing and mechanical assembly (assembly line assembly), which plays the role of fixing, positioning, and press-fit assembly. The clamping methods include manual, wrench, rocker, and pneumatic, electric or magnetic seats. The polarity change acts as a clamping suction. The structure has flat mouth type, V shape, semicircle type, point type, and the contact surface has hard contact or elastic contact. The invention refers to the elastic clamping device.

At present, the part is a small cylindrical gear made of non-magnetic copper. The existing process requires that the part should be installed upside down in the upper tooling and cannot fall. After analysis, because copper is a non-magnetic material, it cannot be magnetically adsorbed, because the surface of the cylindrical gear is full of The tooth-shaped groove has a hole in the middle, so it cannot be adsorbed by negative pressure, and the hard contact clamping will damage the tooth-shaped surface, so the existing technology adopts horizontal tooling assembly to solve the difficulty of gear falling, but the disadvantage is the horizontal tooling structure Complicated, with high processing precision, poor interchangeability, and large work area.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a cylindrical gear elastic clamping tool, which can solve the problem that the hard contact clamping has damage to the tooth surface, because the elastic clamping has a large impact on the copper cylinder. The tooth profile of the gears does not cause galling or indentations. At the same time, the design and manufacture of tooling in production is very simple, small in size, occupies less work area, and the assembly and production operation is also very convenient.

The technical solution adopted by the present invention to solve the technical problem is: a cylindrical gear elastic clamping tool, including an inner bushing, an elastic foot, an elastic foot locking cylinder, an upper tooling base, and the inner bushing is radially There are many small holes, one end of the elastic foot is straight, and the other end is a small elbow, respectively put the small elbow of the elastic foot into the small hole of the inner bushing, and the elastic foot locking cylinder is installed in the inner bushing. In the bushing, the elastic foot locking cylinder fixes the straight end of the elastic foot on the inner wall of the inner bushing, and the inner bushing, elastic foot, and elastic locking cylinder are installed in the hole of the upper tooling base.

As a further improved technical solution of the present invention, the number of small holes provided in the radial direction of the inner bushing is three or more, and the holes are evenly distributed.

As a further improved technical solution of the present invention, the number of said elastic feet is equal to the number of small holes provided in the inner bushing.

As a further improved technical solution of the present invention, the diameter of the elastic leg steel wire is smaller than the diameter of the small hole on the inner bushing.

As a further improved technical solution of the present invention, the diameter of the elastic foot steel wire is 0.8 mm, and the diameter of the small hole on the inner liner is 1.5 mm.

The beneficial effects of the present invention are:

The elastic clamping tooling of the present invention, because the cylindrical gear is elastically clamped in the tooling, has a certain swing gap on the horizontal plane. When the small shaft of the lower motor is pressed in, the center of the gear and the center of the motor shaft do not require precise alignment. Small deviations can be automatically adjusted within the elastic clamp. The elastic clamping does not cause galling or indentation to the tooth profile of the copper cylindrical gear. At the same time, the design and manufacture of the tooling in production is very simple, small in size, takes up less work area, and the assembly and production operation is also very convenient. After press-fitting the motor, the step of pressure relief is omitted, and the gear can be separated from the tooling by the weight of the motor itself.

Description of drawings

Accompanying drawing 1 is inner bush figure of the present invention;

Accompanying drawing 2 is elastic foot figure of the present invention;

Accompanying drawing 3 is the front view of elastic pin locking cylinder figure of the present invention;

Accompanying drawing 4 is the top view of elastic pin locking cylinder figure of the present invention;

Accompanying drawing 5 is the upper frock base figure of the present invention;

Accompanying drawing 6 is the cylindrical gear diagram of clamping parts of the present invention;

Accompanying drawing 7 is the assembly drawing of the present invention;

Accompanying drawing 8 is the clamping state diagram of the present invention.

Explanation of reference numerals: 1-inner bushing, 2-elastic foot, 3-elastic foot locking cylinder, 4-upper tooling base, 5-cylindrical gear.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is further described:

As shown in Figures 1 to 7, a cylindrical gear elastic clamping tooling includes an inner bushing 1, an elastic foot 2, an elastic foot locking cylinder 3, and an upper tooling base 4. The inner bushing 1 is in diameter Drill four small holes evenly upwards. The diameter of the small holes is 1.5 mm. One end of the elastic foot is straight, and the other end is a small elbow. The small elbows are installed in the four small holes respectively, and the elastic feet are small. The elbows play a positioning and guiding role in the four small holes on the inner bushing 1. Because the diameter of the steel wire is 0.8 mm smaller than the diameter of the small hole 1.5 mm, the elastic The foot 2 has a certain elastic range for the inner circle of the inner liner 1, front, back, left, and right. The elastic foot locking cylinder 3 is installed in the inner bushing 1, and the elastic foot locking cylinder 3 fixes the straight end of the elastic foot 2 on the inner wall of the inner bushing 1. The inner bushing 1, the elastic foot 2, and the elastic locking cylinder 3 are installed in the hole of the upper tooling base 4 to form a complete device with elastic clamping function.

Working principle of the present invention: the inner diameters of the four elastic feet 2 in the original state are smaller than the middle diameter of the cylindrical gear 5, when the cylindrical gear 5 is inserted into the inner bushing 1, the elastic feet 2 spring into the tooth grooves of the cylindrical gear 5, and the Cylindrical gear 5 is clamped. The elastic force of the elastic foot 2 is designed according to the weight of the clamping part. Because the cylindrical gear 5 is elastically clamped in the tooling, there is a certain swing gap on the horizontal plane. When the small shaft of the lower motor is pressed in, the center of the gear and the center of the motor shaft do not require very precise alignment, and the slight deviation is within the elastic clamping. Can be adjusted automatically. And because it is elastic clamping, it will not cause scratches or indentations to the tooth profile of the copper cylindrical gear 5 . At the same time, the design and manufacture of the tooling in production is very simple, small in size, takes up less work area, and the assembly and production operation is also very convenient. After the motor is press-fitted, the step of pressure relief is omitted, and the gear can be separated from the tooling by the weight of the motor itself.

The above embodiments are only described with the number of gear teeth being 24. If the number of gear teeth is 21 or a multiple of 3, the elastic feet can be designed to be divided into thirds. Similarly, if the number of gear teeth is a multiple of 5, the elastic feet are designed to be divided into five equal parts.

Claims (5)

1. A cylindrical gear elastic clamping tooling, including an inner bushing (1), an elastic foot (2), an elastic foot locking cylinder (3), and an upper tooling base (4), characterized in that the inner bushing ( 1) There are several small holes in the radial direction. One end of the elastic foot (2) is straight, and the other end is a small elbow. Put the small elbow of the elastic foot (2) into the small hole of the inner bush (1) respectively. In the hole, the elastic foot locking cylinder (3) is installed in the inner bushing (1), and the elastic foot locking cylinder (3) fixes the straight end of the elastic foot (2) on the inner wall of the inner bushing (1). The inner bushing (1), the elastic feet (2), and the elastic locking cylinder (3) are installed in the holes of the upper tooling base (4). 2. A cylindrical gear elastic clamping tool according to claim 1, characterized in that: the number of small holes in the radial direction of the inner bush (1) is three or more, and they are evenly distributed. 3. A cylindrical gear elastic clamping tool according to claim 1, characterized in that the number of elastic feet (2) is equal to the number of small holes provided in the inner bush (1). 4. A cylindrical gear elastic clamping tool according to claim 1, characterized in that: the diameter of the steel wire of the elastic foot (2) is smaller than the diameter of the small hole on the inner bush (1). 5. A cylindrical gear elastic clamping tool according to claim 4, characterized in that: the diameter of the steel wire of the elastic foot (2) is 0.8 mm, and the diameter of the small hole on the inner bush (1) is 1.5 mm.