CN108890339A - A kind of hand-rail type lathe fork clamp for machining - Google Patents

Abstract

The invention discloses a jig for fork processing of a hand-operated lathe, which includes a base part, a driving part and a clamping part. The base part includes a clamp base and a middle plate. The clamping part is located outside the base. Round mouth fixed cylinder, clamping and fixing claws, ring mouth positioning pins and fixing pins, the driving part includes cross key rocker and movable screw rod, the invention improves labor productivity, guarantees processing quality at the same time, reduces labor intensity, and saves cumbersome processing during processing. The process and the technical level requirements for workers are relatively low.

Description

A hand-operated lathe fork processing jig

technical field

The invention relates to the field of part processing, in particular to a processing jig for a fork of a hand-operated lathe.

Background technique

Lathe fork parts, located inside the lathe gearbox. The main function is to be used for the gear shifting of the lathe, so that the rotary motion of the spindle can work according to the requirements of the worker to obtain the required speed and torque. The upper hole in the part is connected to the operating mechanism, and the lower half hole is used to make contact with the shaft on which the controlled gear is located. The lower gear is shifted by the upper force. The two parts are cast as one piece and separated during machining.

The disadvantages of the prior art are low production efficiency, lack of professional lathe shift fork clamps, and common clamps are difficult to achieve fast clamping and pick-up. In order to improve labor productivity, ensure processing quality, and reduce labor intensity, it is necessary to design special fixtures.

Contents of the invention

The purpose of the present invention is to provide a hand-operated lathe fork processing fixture, which can be used to initially fix the lathe fork by setting a round mouth fixing cylinder and a ring mouth positioning pin, and then rotate the movable screw rod to clamp the fork The clamping and final fixing of the lathe shift fork is achieved by holding the fixed claws apart. The invention improves labor productivity, ensures processing quality, reduces labor intensity, saves tedious procedures in processing and requires relatively low technical level of workers. .

A hand-operated lathe fork processing jig includes a base part, a driving part and a clamping part, the base part includes a jig base and a middle plate, and the middle plate is fixedly installed on the inner side of the upper end of the jig base, There is a bolt through groove at the middle position on the left side of the middle plate;

The clamping part is located on the outside of the abutment, and the clamping part includes a round mouth fixing cylinder, a clamping and fixing claw, a ring mouth positioning pin and a fixing pin, and the rear end of the round mouth fixing cylinder is fixedly connected to the middle plate, so that The front of the round mouth fixing cylinder is provided with an internal thread, and the inner side of the ring mouth positioning pin is provided with a bolt hole, and the ring mouth positioning pin is fixedly connected to the middle plate through a fixing bolt, and the bolt passes through the bolt through groove and the ring mouth The positioning pin is threaded, the rear end of the fixing pin is fixedly connected to the middle plate, and the fixing pin is located at the rear of the round mouth fixing cylinder, and the clamping and fixing claws are rotatably connected with the cylinder wall of the round mouth fixing cylinder;

The driving part includes a cross key rocker and a movable screw, the movable screw is threadedly connected with the round mouth fixed cylinder, and the movable screw is located in front of the round mouth fixed cylinder, and the clamping and fixed claw is located between the movable screw and the fixed pin , the front end of the movable screw rod is provided with a cross lock, and the front end of the cross key rocker is provided with a cross key matched with the cross lock.

Preferably, the upper and lower ends of the ring positioning pin are arc-shaped, and the ring positioning pin is installed vertically on the middle plate.

Preferably, the clamping and fixing claws are composed of three parts: a claw buckle, a rotating shaft and a ball post. The claw buckle part is located outside the round opening fixing cylinder, and the ball post part is located inside the round opening fixing cylinder.

Preferably, there are two clamping and fixing claws, which are respectively installed directly above, at the lower left and at the lower right of the round mouth fixing cylinder, and the cylinder wall of the round mouth fixing cylinder is provided with claw buckle grooves.

Preferably, the cross key remote lever is a "Z" shaped rocker.

Preferably, feet are provided at the bottom of the abutment.

The invention has the advantages of simple structure and flexible use. The preliminary fixing of the lathe shift fork is realized by setting the round mouth fixing cylinder and the ring mouth positioning pin, and then the clamping and fixing claws are opened by turning the movable screw rod by the hand-operated cross key remote lever. Realize the clamping and final fixing of the fork of the lathe, the invention improves labor productivity, guarantees processing quality, reduces labor intensity, saves tedious procedures in processing and requires relatively low technical level of workers.

Description of drawings

Fig. 1 is the structural representation of device of the present invention;

Fig. 2 is the top view of device of the present invention;

Fig. 3 is the front view of device of the present invention;

Fig. 4 is a schematic diagram of the structure of the connection between the clamping and fixing claws and the round mouth fixing cylinder in the device of the present invention;

Fig. 5 is the schematic diagram when clamping fixed claw in the device of the present invention is in contact with movable screw rod and fixed pin;

Fig. 6 is the top view of the cross key remote lever in the device of the present invention;

Fig. 7 is the front view of the cross key remote lever in the device of the present invention;

Fig. 8 is a schematic diagram of clamping and fixing claws in the device of the present invention;

Fig. 9 is a schematic diagram of the connection between the fixed pin and the round mouth fixed cylinder and the middle plate in the device of the present invention;

Among them, 1. Lathe fork, 2. Cross key rocker, 20. Cross key, 3. Round mouth fixing cylinder, 30. Claw buckle groove, 4. Clamping and fixing claw, 40. Claw buckle, 41. Rotating shaft, 42 , ball column, 5, movable screw rod, 6, fixture abutment, 7, ring mouth positioning pin, 8, cross lock hole, 9, fixed pin, 10, middle plate, 11, bolt through groove, 12, fixed bolt.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figures 1 to 9, a hand-operated lathe fork processing fixture includes a base part, a driving part and a clamping part, and the base part includes a clamp base 6 and a middle plate 10, and the middle The plate 10 is fixedly installed on the inner side of the upper end of the fixture base 6, and the middle position on the left side of the middle plate 10 is provided with a bolt through groove 11;

The clamping part is located on the outside of the abutment 6, and the clamping part includes a round mouth fixing cylinder 3, a clamping and fixing claw 4, a ring mouth positioning pin 7 and a fixing pin 9, and the rear end of the round mouth fixing cylinder 3 is fixedly connected On the middle plate 10, the front of the round opening fixing cylinder 3 is provided with an internal thread, and the inner side of the ring opening positioning pin 7 is provided with a bolt hole, and the ring opening positioning pin 7 is fixedly connected to the middle plate 10 by fixing bolts 12 , the bolt 12 passes through the bolt through groove 11 and is threadedly connected with the ring opening positioning pin 7, the rear end of the fixing pin 9 is fixedly connected to the middle plate 10, and the fixing pin 9 is located at the rear of the round mouth fixing cylinder 3, so The clamping and fixing claw 4 is rotationally connected with the cylinder wall of the round mouth fixing cylinder 3;

The driving part includes a cross key rocker 2 and a movable screw 5, the movable screw 5 is threadedly connected with the round mouth fixed cylinder 3, and the movable screw 5 is located in front of the round mouth fixed cylinder 3, and the clamping and fixed claw 4 is located Between the movable screw 5 and the fixed pin 9 , the front end of the movable screw 5 is provided with a cross lock 8 , and the front end of the cross key rocker 2 is provided with a cross key 20 matched with the cross lock 8 .

The upper and lower ends of the ring opening positioning pin 7 are arc-shaped, and the ring opening positioning pin 7 is vertically installed on the middle plate 10 .

The clamping and fixing claw 4 includes a claw buckle 40, a rotating shaft 41 and a ball post 42. The claw buckle 40 is partly located outside the round mouth fixing cylinder 3, and the ball post 42 is partly located inside the round mouth fixing cylinder 3. .

The clamping and fixing claws 4 are provided with three, which are respectively installed directly above, at the lower left and at the lower right of the round mouth fixing cylinder 3 , and the cylinder wall of the round mouth fixing cylinder 3 is equipped with claw buckle grooves 30 .

The cross key remote lever 2 is a "Z" shaped rocker.

The bottom end of the abutment 6 is provided with feet.

Specific implementation and principle:

Embodiment 1. First, put the round mouth of the lathe fork 1 on the round mouth fixing cylinder 3, and then clamp the ring mouth on the ring mouth positioning pin 7. After the lathe fork is initially fixed, put the cross key rocker 2 The front cross key 20 is inserted into the cross lock 8 at the front end of the movable screw 5, and then the cross key rocker 2 is turned by hand to make the movable screw 5 rotate into the round mouth fixed cylinder 3, and the movable screw 5 moves into the round mouth fixed cylinder 3 for a while Touch the ball post 42 holding the fixed claw 4, and by pushing the ball post 42, the claw buckle 40 holding the fixed claw 4 will be lifted up, and it will be pushed against the round mouth of the lathe fork 1 to realize the fixation of the lathe fork 1 and clamping.

Embodiment 2. Since the fixing bolt 12 is threadedly connected with the ring opening positioning pin 7 through the bolt through groove 11, the ring opening positioning pin 7 can be fine-tuned on the middle plate 10 through the fixing bolt 12, so it can be better started. Due to the function of fixing the fork 1 of the lathe, the rotating shaft 41 of the clamping and fixing claw 4 is rotationally connected with the cylinder wall of the round mouth fixing cylinder 3. Therefore, after the ball post 42 is pushed, the clamping and fixing claw 4 will be centered on the rotating shaft 41. Rotation, clamping and fixing claw 4 rotations can make claw button 40 turn out from the claw button groove 30, thereby play fixing and clamping effect, abutment 6 bottom end is provided with leg to facilitate the movement and placement of abutment 6.

Based on the above, the present invention is simple in structure and flexible in use. The initial fixation of the lathe shift fork is realized by setting the round mouth fixing cylinder and the ring mouth positioning pin, and then the clamping and fixing claws are stretched out by turning the movable screw rod by the hand-operated cross key remote lever. For the clamping and final fixing of the fork of the lathe, the present invention improves labor productivity, ensures processing quality, reduces labor intensity, saves tedious procedures in processing and requires relatively low technical level of workers.

It can be known from common technical knowledge that the present invention can be realized through other embodiments without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are embraced by the present invention.

Claims (6)

1. A hand-operated lathe fork processing clamp is characterized in that it comprises a base part, a driving part and a clamping part, and the base part comprises a clamp base (6) and an intermediate plate (10), and the The middle plate (10) is fixedly installed on the inner side of the upper end of the fixture base (6), and the middle position on the left side of the middle plate (10) is provided with a bolt through groove (11); The clamping part is located on the outside of the abutment (6), and the clamping part includes a round mouth fixing cylinder (3), a clamping and fixing claw (4), a ring opening positioning pin (7) and a fixing pin (9). The rear end of the round mouth fixed cylinder (3) is fixedly connected to the middle plate (10), the front of the round mouth fixed cylinder (3) is provided with an internal thread, and the inner side of the ring mouth positioning pin (7) is provided with a bolt hole, The ring mouth positioning pin (7) is fixedly connected on the middle plate (10) by the fixing bolt (12), and the described bolt (12) passes through the bolt through groove (11) and is threadedly connected with the ring mouth positioning pin (7), The rear end of the fixing pin (9) is fixedly connected to the middle plate (10), and the fixing pin (9) is located at the rear of the round mouth fixing cylinder (3), and the clamping and fixing claws (4) are fixed with the round mouth The cylinder wall of the cylinder (3) is rotationally connected; The driving part includes a cross key rocker (2) and a movable screw (5), the movable screw (5) is threadedly connected with the round mouth fixed cylinder (3), and the movable screw rod (5) is located in the round mouth fixed cylinder (3) ), the clamping and fixing claw (4) is located between the movable screw (5) and the fixed pin (9), and the front end of the movable screw (5) is provided with a cross lock (8), and the cross key rocker The front end of the rod (2) is provided with a cross key (20) matched with the cross lock (8). 2. A hand-operated lathe fork processing fixture according to claim 1, characterized in that: the upper and lower ends of the ring mouth positioning pin (7) are arc-shaped, and the ring mouth positioning pin (7) is vertical Installed on the middle plate (10). 3. A hand-operated lathe fork processing fixture according to claim 1, characterized in that: the clamping and fixing claw (4) includes a claw buckle (40), a rotating shaft (41) and a ball post (42) It consists of three parts, the claw buckle (40) is partly located outside the round mouth fixed cylinder (3), and the ball post (42) is partly located inside the round mouth fixed cylinder (3). 4. The fork processing jig of a hand-operated lathe according to claim 3, characterized in that: the clamping and fixing claws (4) are provided with three, respectively installed on the front of the round mouth fixing cylinder (3). At the top, at the bottom left and at the bottom right, the wall of the round mouth fixing cylinder (3) is equipped with claw grooves (30). 5. A hand-operated lathe fork processing jig according to claim 1, characterized in that: the cross key remote lever (2) is a "Z" shaped rocker. 6 . The fork processing jig of a hand-operated lathe according to claim 1 , characterized in that: the bottom end of the abutment ( 6 ) is provided with a leg. 7 .