CN209935907U - Fixture device for machining cross hole of steering shaft of forklift - Google Patents

Abstract

The utility model discloses a fixture device for processing a cross hole of a steering shaft of a forklift, which comprises a workpiece and a fixture base, wherein the fixture base is fixedly connected with a machine tool, the middle part of the upper part of the fixture base is provided with a positioning fixture, the positioning fixture comprises a lower positioning fixture and an upper positioning fixture, the surface of the upper positioning fixture, which is contacted with the workpiece, is provided with an inverted V-shaped groove, the surface of the lower positioning fixture, which is contacted with the workpiece, is provided with a positive V-shaped groove, the workpiece is arranged in a gap enclosed by two V-shaped grooves, a clamping support plate is arranged above the upper positioning fixture, the clamping support plate is connected with the positioning fixture through a guide shaft, a clamping screw body is also connected between the clamping support plate and the upper positioning fixture, the clamping screw body passes through the clamping support plate and is inserted into the upper positioning fixture, the clamping screw body is rotated to drive the upper positioning clamp to move up and down so as to clamp or loosen a workpiece. The utility model discloses shorten the tight time of dismantling of work piece location clamp in the course of working, improved the utilization ratio of product production efficiency and lathe.

Description

A fixture device for processing cross hole of steering shaft of forklift

technical field

The utility model relates to the technical field of mechanical manufacturing and processing, in particular to a clamp device for processing a cross hole of a steering shaft of a forklift.

Background technique

The function of the forklift steering shaft is to transmit the steering torque that the driver acts on the steering wheel to the steering gear. The upper part of it is fixedly connected to the steering wheel, and the lower part is connected to the steering gear.

Forklift steering shafts are fork-shaped workpieces. At present, the most commonly used processing method for drilling cross holes on the left steering shaft of forklift trucks is to use the steering shaft hole stopper seat to locate, and to drill the two cross holes by clamping the end face of the steering shaft hole. Processed on two machines.

However, in the existing forklift left steering shaft, the cross hole is drilled and the shaft hole is positioned by the stopper seat, and the clamping method of the end face pressure plate will indirectly guarantee the axial size of the cross hole of the steering shaft, increase the machining dimensional error, and it is difficult to ensure the quality of the workpiece. Type clamping, drilling two cross holes and processing them on two equipments respectively. During the processing, it takes time for workpiece positioning and clamping and workpiece removal, which in turn affects the production efficiency and the utilization rate of the lathe. This process also needs to consider the workpiece process route. The problem of the connection between the front and rear processes.

Utility model content

The technical problem to be solved by the utility model is to provide a clamp device for processing the cross hole of the steering shaft of a forklift, aiming at the above-mentioned deficiencies of the prior art.

In order to realize the above-mentioned technical purpose, the technical scheme adopted by the present utility model is:

A fixture device for processing a cross hole of a steering shaft of a forklift truck, which comprises a fixture base, the waist holes on both sides of the fixture base are fixedly connected to a machine tool through T-shaped bolts, a positioning fixture is arranged in the upper and middle part of the fixture base, and the The positioning fixture includes an upper positioning fixture and a lower positioning fixture, the lower positioning fixture is fixedly installed on the fixture base, the upper positioning fixture is installed above the lower positioning fixture, and a clamping support is installed above the upper positioning fixture. The clamping support plate and the positioning fixture are connected by a guide shaft, the upper end of the guide shaft is fixed on the clamping support plate, and the lower end passes through the clamping support plate and the upper positioning fixture in turn and is inserted into the lower positioning fixture Among them, an inverted V-shaped groove is opened on the lower bottom surface of the upper positioning fixture, a positive V-shaped groove is opened on the upper bottom surface of the lower positioning fixture, and the workpiece is installed in the gap enclosed by the two V-shaped grooves. A clamping screw body is also connected between the clamping support plate and the upper positioning fixture, the clamping screw body passes through the clamping support plate and is inserted into the upper positioning fixture, and the clamping screw body can drive the upper positioning fixture. Move up and down relative to the clamping support plate to clamp or loosen the workpiece;

The left end face of the machining end of the workpiece is positioned by a support nail, the support nail is level with the workpiece and is fixed on the boss, the boss is installed on the fixture base, and the upper end of the boss is connected with a drill sleeve connecting plate , the drill sleeve connecting plate is connected with a drill sleeve at a position above the machining end of the workpiece;

Two floating positioning support devices are also installed on the fixture base, and the floating positioning support devices include a first floating positioning support device for fixing the connecting end of the workpiece to be placed horizontally and a second floating positioning support device for fixing the connecting end of the workpiece to be placed vertically. 2. Floating positioning support device;

The first floating positioning support device includes a bracket, a first floating support pin, a first adjusting nut and a first compression spring. The lower end of the bracket is fixed on the side of the fixture base, and the upper end is provided with a transverse through hole. The first adjustment nut is installed in the through hole, the first floating support pin is connected to the first adjustment nut through the first compression spring, and the first adjustment nut is moved horizontally to drive the first compression spring to control the first floating The support pin is moved to a position where it can be clamped at the connecting end of the workpiece;

The second floating positioning support device includes a second compression spring, a second floating support pin and a second adjusting nut, the second adjusting nut is installed in the through hole on the base, and the second floating support pin passes through the base. The second compression spring is connected to the second adjustment nut, and by moving the second adjustment nut to move vertically, the second compression spring is driven to control the second floating support pin to move to a position where it can be clamped at the connection end of the workpiece.

In order to optimize the above technical solutions, the specific measures taken also include:

The above-mentioned guide shafts are two, which are symmetrically distributed on both sides of the clamping screw body, the upper end of the guide shaft is fixed on the clamping support plate by a nut, and the upper positioning fixture is provided with two through holes, two The guide shaft passes through it, and the diameter of the through hole is slightly larger than the diameter of the guide shaft.

The above-mentioned lower positioning fixture is provided with two threaded holes, and the lower end of the guide shaft is screwed into the two threaded holes on the lower positioning fixture.

A T-shaped slot is formed in the middle of the above-mentioned upper positioning fixture, the clamping screw body is a T-shaped screw, the lower end is a small cylindrical shape, and the lower end of the clamping screw body is inserted into the T-shaped slot.

The above-mentioned clamping screw body is threadedly connected with the clamping support plate.

The above-mentioned through holes for connecting the first adjustment nut and the second adjustment nut are all stepped holes, the upper part is small and the lower part is large, the lower end of the large hole is threaded, and the two adjustment nuts are respectively connected with the two through holes threadedly.

The upper part of the first floating support pin and the second floating support pin are both tapered, and the lower part is provided with a hole, and the first compression spring and the second compression spring are respectively connected in the holes of the two support pins.

The V-shaped angles of the above-mentioned positive V-shaped grooves and inverted V-shaped grooves are both 90°.

The lower end of the above-mentioned bracket is screwed to the side surface of the fixture base.

The utility model has the beneficial effects of a clamp device for processing a cross hole of a steering shaft of a forklift:

The utility model provides a clamp device for processing a cross hole of a steering shaft of a forklift, which can complete the drilling of two cross holes through two positioning and clamping on one processing equipment; The precise positioning of the steering shaft ensures the requirements of processing size, shortens the time for workpiece positioning and clamping and workpiece removal during the processing process, solves the problem of front and rear connection in the process route, and improves product production efficiency and machine tool equipment utilization.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic top view of the structure of the utility model;

Fig. 3 is the schematic diagram of the right side view of the structural workpiece of the utility model;

FIG. 4 is a schematic diagram of the right side view of the structural workpiece of the present invention rotated by 90°.

Reference numerals are: workpiece 1, fixture base 2, positioning fixture 3, lower positioning fixture 31, upper positioning fixture 32, inverted V-shaped groove 33, positive V-shaped groove 34, clamping support plate 4, guide shaft 5, clamping Screw body 6, support pin 7, boss 8, drill sleeve connecting plate 9, drill sleeve 10, first floating positioning support device 11, bracket 12, first floating support pin 13, first adjusting nut 14, first compression spring 15. The second floating positioning support device 16 , the second compression spring 17 , the second floating support pin 18 , the second adjusting nut 19 , and the workpiece connecting end 20 .

Detailed ways

The embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

As shown in Figures 1 to 4, the utility model is a fixture device for processing a cross hole of a steering shaft of a forklift, wherein: a fixture base 2 is included, and the waist holes on both sides of the fixture base 2 are fixedly connected to the machine tool through T-shaped bolts, and the fixture base 2. There is a positioning fixture 3 in the upper middle. The positioning fixture 3 includes an upper positioning fixture 31 and a lower positioning fixture 32. The lower positioning fixture 32 is fixedly installed on the fixture base 2, the upper positioning fixture 31 is installed above the lower positioning fixture 32, and the upper positioning fixture The clamping support plate 4 is installed above the 31. The clamping support plate 4 and the positioning fixture 3 are connected by a guide shaft 5. The upper end of the guide shaft 5 is fixed on the clamping support plate 4, and the lower end passes through the clamping support plate 4 and the clamping support plate in turn. The upper positioning fixture 31 is inserted into the lower positioning fixture 32. The lower bottom surface of the upper positioning fixture 31 is provided with an inverted V-shaped groove 33, and the upper bottom surface of the lower positioning fixture 32 is provided with a positive V-shaped groove 34. The workpiece 1 is installed in two In the gap enclosed by the V-shaped groove, a clamping screw body 6 is also connected between the clamping support plate 4 and the upper positioning fixture 31, and the clamping screw body 6 passes through the clamping support plate 4 and is inserted into the upper positioning fixture 31, The clamping screw body 6 can drive the upper positioning fixture 31 to move up and down relative to the clamping support plate 4 to clamp or loosen the workpiece 1;

The left end face of the machining end of the workpiece 1 is positioned by the support nail 7, the support nail 7 is horizontally flush with the workpiece 1 and fixed on the boss 8, the boss 8 is installed on the fixture base 2, and the upper end of the boss 8 is connected with a drill sleeve connecting plate 9 , the drill sleeve connecting plate 9 is connected with the drill sleeve 10 at the position above the machining end of the workpiece 1;

Two floating positioning support devices are also installed on the fixture base 2. The floating positioning support devices include a first floating positioning support device 11 for fixing the workpiece connecting end 20 to be placed horizontally and a second floating positioning support device for fixing the workpiece connecting end 20 to be placed vertically. positioning support device 16;

The first floating positioning support device 11 includes a bracket 12, a first floating support pin 13, a first adjusting nut 14 and a first compression spring 15. The lower end of the bracket 12 is fixed on the side of the fixture base 2, and the upper end is provided with a transverse through hole. An adjustment nut 14 is installed in the through hole, and the first floating support pin 13 is connected to the first adjustment nut 14 through the first compression spring 15. By moving the first adjustment nut 14 horizontally, the first compression spring 15 is driven to control the first adjustment nut 14. The floating support pin 13 is moved to a position where it can be clamped on the workpiece connecting end 20;

The second floating positioning support device 16 includes a second compression spring 17, a second floating support pin 18 and a second adjusting nut 19, the second adjusting nut 19 is installed in the through hole on the base, and the second floating support pin 18 passes through the second pressure The spring 17 is connected to the second adjusting nut 19 . By moving the second adjusting nut 14 to move vertically, the second compression spring 17 is driven to control the second floating support pin 18 to move to a position where it can be clamped on the workpiece connecting end 20 .

In this embodiment, there are two guide shafts, which are symmetrically distributed on both sides of the clamping screw body 6, the upper end of the guide shaft 5 is fixed on the clamping support plate 4 by nuts, and the upper positioning fixture 31 is provided with two through holes. A guide shaft 5 passes through it, and the diameter of the through hole is slightly larger than the diameter of the guide shaft 5 .

In this embodiment, the lower positioning fixture 32 is provided with two threaded holes, and the lower end of the guide shaft 5 is screwed into the two threaded holes on the lower positioning fixture 32.

In this embodiment, a T-shaped slot is formed in the middle of the upper positioning fixture 31, the clamping screw body 6 is a T-shaped screw, and the lower end of the clamping screw body 6 is inserted into the T-shaped slot.

In this embodiment, the clamping screw body 6 is threadedly connected with the clamping support plate 4 .

In this embodiment, the through holes used to connect the first adjustment nut 14 and the second adjustment nut 19 are all stepped holes, the upper part is small and the lower part is large, the lower end of the large hole is threaded, and the two adjustment nuts are respectively threaded with the two through holes connect.

In this embodiment, the upper part of the first floating support pin 13 and the second floating support pin 18 are both tapered, and the lower part is provided with a hole, and the first compression spring 15 and the second compression spring 17 are respectively connected in the holes of the two support pins. .

In this embodiment, the V-shaped angles of the positive V-shaped groove 34 and the inverted V-shaped groove 33 are both 90°.

In this embodiment, the lower end of the bracket 12 is screwed to the side surface of the fixture base 2 .

A processing method for processing a cross hole of a steering shaft of a forklift is as follows:

Taking FIG. 1 to FIG. 4 as an example, step A: pre-adjust the first adjusting nut 14 and the second adjusting nut 19 so that the first floating support pin 13 and the second floating support pin 18 are adjusted to be just clamped on the workpiece connecting end 20 Then install the lower positioning fixture 32 and fix it on the machine tool, rotate and adjust the clamping screw body 6 to move upward, control the upper positioning fixture 31 away from the lower positioning fixture 32, and then put the workpiece 1, and the left end face of the workpiece 1 processing end passes through The support nail 7 is positioned, the workpiece connecting end 20 is placed horizontally and positioned by the first floating support pin 13, the first floating support pin 13 is clamped between the workpiece connecting ends 20, and finally the rotating adjustment clamping screw body 6 moves downward, controlling The upper positioning jig 31 is close to the lower positioning jig 32 and clamps the workpiece 1 to complete the positioning, and then a pair of holes in the cross hole is processed by the drill sleeve 10 .

Step B: Rotate and adjust the clamping screw body 6 to move upward, control the upper positioning fixture 31 away from the lower positioning fixture 32, then rotate the workpiece 1 by 90°, and the workpiece connecting end 20 passes vertically downward through the second floating support pin on the fixture base 2 18 is supported and positioned, the second floating support pin 18 is clamped in the middle of the workpiece connecting end 20, and then the clamping screw body 6 is rotated and adjusted to move downward, and the upper positioning fixture 31 is controlled to approach the lower positioning fixture 32 and clamp the workpiece 1. Completed Position and then machine the other pair of holes in the cross hole with drill sleeve 10 .

The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (9)

1. A clamp device for processing a cross hole of a forklift steering shaft, characterized in that: comprising a clamp base (2), the waist holes on both sides of the clamp base (2) are fixedly connected with the machine tool by T-shaped bolts, and the clamp The upper and middle part of the base (2) is provided with a positioning fixture (3), the positioning fixture (3) includes an upper positioning fixture (31) and a lower positioning fixture (32), and the lower positioning fixture (32) is fixedly installed on the fixture On the base (2), the upper positioning fixture (31) is installed above the lower positioning fixture (32), and a clamping support plate (4) is installed above the upper positioning fixture (31). The support plate (4) and the positioning fixture (3) are connected by a guide shaft (5). The upper end of the guide shaft (5) is fixed on the clamping support plate (4), and the lower end passes through the clamping support plate (4). 4) and the upper positioning fixture (31) and inserted into the lower positioning fixture (32), the lower bottom surface of the upper positioning fixture (31) is provided with an inverted V-shaped groove (33), the lower positioning fixture (32) ) is provided with a positive V-shaped groove (34) on the upper bottom surface, the workpiece (1) is installed in the gap enclosed by the two V-shaped grooves, the clamping support plate (4) and the upper positioning fixture (31) A clamping screw body (6) is also connected between the clamping screws, the clamping screw body (6) passes through the clamping support plate (4) and is inserted into the upper positioning fixture (31), and the clamping screw body (6) can drive the The upper positioning fixture (31) moves up and down relative to the clamping support plate (4) to clamp or loosen the workpiece (1); The left end face of the machining end of the workpiece (1) is positioned by a support nail (7), and the support nail (7) is horizontally flush with the workpiece (1) and fixed on the boss (8). (8) Installed on the fixture base (2), the upper end of the boss (8) is connected with a drill sleeve connecting plate (9), and the drill sleeve connecting plate (9) is connected with a drill at the position above the machining end of the workpiece (1). set(10); Two floating positioning support devices are also installed on the fixture base (2), and the floating positioning support devices include a first floating positioning support device (11) for fixing the workpiece connecting end (20) to be placed horizontally, and a floating positioning support device (11). a second floating positioning support device (16) vertically placed on the connection end (20) of the fixed workpiece; The first floating positioning support device (11) includes a bracket (12), a first floating support pin (13), a first adjusting nut (14) and a first compression spring (15). The bracket (12) The lower end is fixed on the side of the fixture base (2), the upper end is provided with a transverse through hole, the first adjusting nut (14) is installed in the through hole, and the first floating support pin (13) passes through the first pressure The spring (15) is connected to the first adjusting nut (14), and by moving the first adjusting nut (14) horizontally, the first compression spring (15) is driven to control the first floating support pin (13) to move to a position that can be clamped on the the position of the workpiece connection end (20); The second floating positioning support device (16) comprises a second compression spring (17), a second floating support pin (18) and a second adjusting nut (19), and the second adjusting nut (19) is mounted on the In the through hole on the base, the second floating support pin (18) is connected to the second adjusting nut (19) through the second compression spring (17), and the second adjusting nut (19) is moved vertically to drive the second adjusting nut (19). Two compression springs (17) control the second floating support pin (18) to move to a position where it can be clamped on the workpiece connecting end (20). 2. A clamp device for processing a cross hole of a forklift steering shaft according to claim 1, wherein the number of the guide shafts is two, which are symmetrically distributed on both sides of the clamping screw body (6), and the The upper end of the guide shaft (5) is fixed on the clamping support plate (4) by a nut, and the upper positioning fixture (31) is provided with two through holes through which the two guide shafts (5) pass. The diameter of the through hole is slightly larger than the diameter of the guide shaft (5). 3. A clamp device for processing a cross hole of a forklift steering shaft according to claim 1, wherein the lower positioning clamp (32) is provided with two threaded holes, and the guide shaft (5) The lower end is screwed into the two threaded holes on the lower positioning fixture (32). 4. A clamp device for processing a cross hole of a steering shaft of a forklift truck according to claim 1, wherein a T-shaped groove is formed in the middle of the upper positioning clamp (31), and the clamping screw body (6) ) is a T-shaped screw, and the lower end of the clamping screw body (6) is inserted into the T-shaped groove. 5. A clamp device for processing a cross hole of a forklift steering shaft according to claim 4, wherein the clamping screw body (6) is threadedly connected to the clamping support plate (4). 6. A fixture device for processing a cross hole of a steering shaft of a forklift truck according to claim 1, wherein the through holes for connecting the first adjusting nut (14) and the second adjusting nut (19) are both It is a stepped hole, the upper part is small and the lower part is large, the lower end of the large hole is threaded, and the two adjusting nuts are respectively connected with the two through holes threadedly. 7. The fixture device for processing the cross hole of the steering shaft of a forklift truck according to claim 1, wherein the upper parts of the first floating support pin (13) and the second floating support pin (18) are both tapered The lower part is provided with a hole, and the first compression spring (15) and the second compression spring (17) are respectively connected in the holes of the two support pins. 8. A fixture device for processing a cross hole of a forklift steering shaft according to claim 1, wherein the V-shaped angles of the positive V-shaped groove (34) and the inverted V-shaped groove (33) are both 90° °. 9 . The fixture device for processing the cross hole of a forklift steering shaft according to claim 1 , wherein the lower end of the bracket ( 12 ) is screwed to the side surface of the fixture base ( 2 ). 10 .

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