Positioning device for machining turbocharger shell

Abstract

The utility model relates to a positioning device for machining a turbocharger shell. The positioning device comprises a base plate and a chuck. The chassis and the chuck are provided with center holes, a first oil cylinder is arranged in the center hole of the chassis, and the outer end of a piston rod of the first oil cylinder extends into the center hole of the chuck. The lower end of the movable head is connected with a piston rod of the first oil cylinder. A dustproof cover is arranged at the upper end of the chuck, and a preset shaft and an end cover are sequentially arranged above the dustproof cover. Upper radial grooves are evenly distributed in the upper surface of the chuck in the circumferential direction, and clamping jaws are arranged in the upper radial grooves. The clamping jaws are in sliding fit with the upper radial grooves. A lower radial groove is formed in the groove bottom of the upper radial groove, and a shifting fork is arranged in the lower radial groove. The upper end of the shifting fork is provided with an outer folding edge. First pits are evenly distributed in the outer circumference direction of the movable head, second pits are formed in the lower portions of the transverse portions of the clamping jaws, and the outer ends of the transverse portion and the vertical portion of the shifting fork extend into the first pits and the second pits respectively. The device is easy to operate and high in production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fixture, more particularly, a positioning device for fixing a turbocharger shell during processing. BACKGROUND

[0002] It is known in the field of turbocharger shell production that a positioning device is needed to fix a turbocharger shell during processing to ensure the processing quality. At present, the positioning device used to fix a turbocharger shell during processing mostly adopts a rising sleeve to enter from the large end face of the turbocharger shell and uses the rising sleeve to realize the positioning of the turbocharger shell. Although the rising sleeve can also realize the positioning of the turbocharger shell, the rising sleeve has many parts and a complex structure, which makes the operation troublesome and reduces the production efficiency. SUMMARY

[0003] The utility model provides a positioning device for turbocharger shell processing. The positioning device for turbocharger shell processing has a simple structure, is easy to operate, and can improve the production efficiency.

[0004] The above problems of the utility model are solved by the following technical solutions.

[0005] The positioning device for turbocharger shell processing has the following characteristics: a base plate is provided, a chuck is connected to the base plate, a central hole is formed in the base plate and the chuck, a first oil cylinder is connected to the central hole of the base plate, the outer end of the piston rod of the first oil cylinder is upward and extends into the central hole of the chuck. An activity head is arranged in the central hole of the chuck. The activity head is cylindrical, and the lower end of the activity head is movably connected to the outer end of the piston rod of the first oil cylinder. A dust cover is arranged on the upper end face of the chuck. The dust cover is a three-pronged plate, and a predetermined shaft and an end cover are sequentially connected to the upper end of the dust cover. Three upper radial grooves are evenly distributed on the upper surface of the chuck, and a pawl is arranged in each of the three upper radial grooves. The pawl is L-shaped, the vertical part of the pawl is lower than the end cover, the horizontal part of the pawl faces outward and is in sliding fit with the groove bottom of the corresponding upper radial groove, and a lower radial groove is arranged on the groove bottom of the upper radial groove. A yoke is arranged in the lower radial groove. The yoke is reverse L-shaped, the horizontal part and the vertical part of the yoke face inward and upward, respectively, and the upper end outer edge of the vertical part of the yoke has an outer hook. Three first recesses are evenly distributed on the outer circumference of the activity head corresponding to the horizontal part of the yoke, and a second recess is arranged on the lower surface of the horizontal part of the pawl corresponding to the vertical part of the yoke. The horizontal part and the vertical part of the yoke are movably inserted into the first recess and the second recess, respectively.

[0006] In a further improved embodiment of the utility model, the lower end of the activity head has a T-shaped groove, and the outer end of the piston rod of the first oil cylinder has a T-shaped head. The T-shaped head is movably embedded in the T-shaped groove.

[0007] The further improved scheme of the utility model is that the piston rod of the first oil cylinder contains a rod body and a first connecting rod, the outer end of the rod body is connected with one end of the first connecting rod, and the other end of the first connecting rod has the T-shaped head, and the T-shaped head is embedded into the T-shaped groove in a movable manner.

[0008] The further improved scheme of the utility model is that the chuck and the base plate between the adjacent clamping claws are provided with corresponding vertical holes, and the base plate has corresponding second oil cylinders in the outer circumferences of the vertical holes. The base plate corresponding to the second oil cylinders is provided with radial holes, the radial holes correspond to the vertical holes and are communicated with the vertical holes. The vertical holes are provided with top rods, and the outer end of the piston rod of the second oil cylinder is movably inserted into the radial hole. The lower end of the top rod and the outer end surface of the piston rod of the second oil cylinder are both inclined surfaces, and the inclined surfaces are slidably connected.

[0009] The further improved scheme of the utility model is that the diameter of the vertical hole in the upper part of the base plate is smaller than the diameter of the vertical hole in the chuck, and the top rod in the vertical hole in the base plate is provided with a circumferential boss for limiting.

[0010] The further improved scheme of the utility model is that the radial hole in the piston rod of the second oil cylinder is sequentially provided with a second connecting rod and a top head. One end of the second connecting rod is connected with the outer end of the piston rod of the second oil cylinder, and the other end of the second connecting rod is connected with one end of the top head; the other end of the top head has the inclined surface, and the inclined surface is slidably connected with the inclined surface of the lower end of the top rod.

[0011] The further improved scheme of the utility model is that the horizontal part of the clamping claw is connected with a sliding block, the sliding block is slidably connected with the upper radial groove, the second recess is located on the lower surface of the sliding block, and the vertical part of the shift fork is movably inserted into the second recess.

[0012] From the above scheme can be seen, because the center hole on the bottom disc and chuck, the center hole of the bottom disc is connected with the first oil cylinder, the outer end of the piston rod of the first oil cylinder is upward and extends into the center hole of the chuck. The center hole of the chuck has a movable head, the lower end of the movable head is movably connected with the outer end of the piston rod of the first oil cylinder. The upper end face of the chuck has a dust cover, the dust cover is a three-pronged plate, and a predetermined shaft and an end cover are sequentially connected above the dust cover. The upper surface of the chuck is uniformly distributed with three upper radial grooves, and the three upper radial grooves are uniformly distributed with clamping jaws. The clamping jaw is L-shaped, and the horizontal part of the clamping jaw is outward and is in sliding fit with the groove bottom of the corresponding upper radial groove. The groove bottom of the upper radial groove has a lower radial groove, and the lower radial groove has a yoke. The horizontal part and the vertical part of the yoke are inward and upward, respectively, and the outer edge of the upper end of the vertical part has an outer hook, and the connecting point of the vertical part and the horizontal part is hinged in the corresponding lower radial groove. The outer circumference of the movable head corresponding to the horizontal part of the yoke is uniformly distributed with three first recesses, and the horizontal part of the clamping jaw corresponding to the vertical part of the yoke has a second recess. The outer ends of the horizontal part and the vertical part of the yoke are movably extended into the first recess and the second recess, respectively. When working, the first oil cylinder is started, the piston rod of the first oil cylinder is extended, and the movable head is driven to move upward. At the same time, the yoke is driven to rotate in the clockwise direction by the movable head, and the sliding block is driven to move outward along the upper radial groove until

[0013] The three clamping jaws are tightened on the large end face of the turbocharger shell, and the outer folded edge of the upper end of the vertical part of the clamping jaw is hooked on the second circumferential inner protrusion in the large end face of the turbocharger shell. At the same time, the three second oil cylinders are started, the piston rods of the second oil cylinders are extended, and the piston rods of the second oil cylinders drive the top rods to move upward and only press against the large end face of the turbocharger shell. As can be seen, only the first oil cylinder and the second oil cylinder are operated to realize the positioning of the turbocharger shell. Compared with the background art, the structure is simple, easy to operate, and can improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of the positioning device for turbocharger shell machining of the utility model;

[0015] Figure 2 is Figure 1 a schematic view from above;

[0016] Figure 3 is Figure 2 a schematic view of A-A section of

[0017] Figure 4 is Figure 2 a schematic view of B-B section of

[0018] Figure 5 is a schematic view of the positioning device for turbocharger shell machining of the utility model;

[0019] Figure 6 is a turbocharger housing with a processed Figure 3 schematic view. DETAILED DESCRIPTION

[0020] The utility model discloses further in detail in connection with the drawings below.

[0021] As Figures 1-5 The utility model discloses a positioning device for turbocharger housing processing, containing base plate 1, the base plate 1 is circular board, and it is fixed with chuck 2 on it. The chuck 2 is circular, and its diameter is less than the base plate 1. The center hole is processed on the base plate 1 and chuck 2, and the first oil cylinder 17 is connected in the center hole on the base plate 1, and the outer end of the piston rod of the first oil cylinder 17 is upwards and stretches into the center hole of the chuck 2. The movable head 9 is arranged in the center hole of the chuck 2, and the movable head 9 is cylindrical, and the lower end thereof is movably connected with the outer end of the piston rod of the first oil cylinder 17. Among them, the lower end of the movable head 9 is radially processed with T-shaped groove, and the outer end of the piston rod of the first oil cylinder 17 is processed with T-shaped head, and the T-shaped head is movably embedded in the T-shaped groove.

[0022] The piston rod of the first oil cylinder 17 contains the rod body 16 and the first connecting rod 10, and the outer end of the rod body 16 is connected with one end of the first connecting rod 10, and the other end of the first connecting rod 10 is processed with the T-shaped head, and the T-shaped head is movably embedded in the T-shaped groove.

[0023] The upper end face of the chuck 2 is provided with the dust cover 3, and the dust cover 3 is a three-pronged plate, and the predetermined shaft 5 and the end cover 4 are sequentially connected above the dust cover 3. Among them, the upper and lower ends of the predetermined shaft 5 are connected with the end cover 4 and the dust cover 3 by means of the screws 18. The upper surface of the chuck 2 is circumferentially uniformly distributed with three upper radial grooves, and the three upper radial grooves are all provided with the claw 6. The claw 6 is L-shaped, and the vertical part thereof is lower than the end cover 4, and the horizontal part thereof all faces outward and is slidably matched with the groove bottom of the corresponding upper radial groove. The groove bottom of the upper radial groove is all processed with the lower radial groove 23, and the lower radial groove 23 is all provided with the shift fork 21. The shift fork 21 is L-shaped, and the horizontal part and the vertical part thereof face inward and upward respectively, and the outer edge of the upper end of the vertical part is all processed with the outer folding edge 19, and the intersection point of the vertical part and the horizontal part is hinged in the corresponding lower radial groove 23 by means of the pin 22. The outer circumference of the movable head 9 corresponding to the horizontal part of the shift fork 21 is all uniformly distributed with three first recesses, and the lower surface of the horizontal part of the claw 6 corresponding to the vertical part of the shift fork 21 is all processed with the second recess, and the horizontal part and the vertical part of the shift fork 21 are movably inserted into the first recess and the second recess respectively. Among them, the lower surface of the horizontal part of the claw 6 is connected with the sliding block 20, and the sliding block 20 is slidably matched with the upper radial groove, and the second recess is located on the lower surface, and the vertical part of the shift fork 21 is movably inserted into the second recess.

[0024] The chuck 2 and the base 1 between the adjacent claws 6 are provided with corresponding vertical holes 11, and the base 1 is provided with second oil cylinders 8 corresponding to the vertical holes 11. The base 1 corresponding to the second oil cylinders 8 is provided with radial holes 15 corresponding to the vertical holes 11 and connected with the vertical holes 11. The vertical holes 11 are provided with top rods 7 in sliding fit. The outer end of the piston rod of the second oil cylinder 8 extends into the radial hole 15. The lower end of the top rod 7 and the outer end of the piston rod of the second oil cylinder 8 are both bevels in sliding fit.

[0025] The upper part of the vertical hole 11 of the base 1 has a smaller diameter than the vertical hole 11 of the chuck 2, and the top rod 7 in the vertical hole 11 of the base 1 is provided with a circumferential boss 71 for limiting.

[0026] The radial hole 15 in the piston rod of the second oil cylinder 8 is provided with a second connecting rod 13 and a top head 14 in sequence. One end of the second connecting rod 13 is connected with the outer end of the piston rod of the second oil cylinder 8, and the other end is connected with one end of the top head 14. The other end of the top head 14 is provided with a bevel in sliding fit with the bevel of the lower end of the top rod 7.

[0027] See Figure 6 The large end face of the turbocharger housing 12 to be machined is provided with a first circumferential inner boss 121 and a second circumferential inner boss 122 in sequence from outside to inside. The inner diameter of the first circumferential inner boss 121 is larger than that of the second circumferential inner boss 122. During operation, the large end face of the turbocharger housing 12 to be machined is first placed downward on the end cover 4. Then the first oil cylinder 17 is started to make the piston rod thereof extend and drive the movable head 9 to move upward. At the same time, the movable head 9 drives the fork 21 to rotate in the clockwise direction and drives the sliding block 20 to move outward along the upper radial groove until the three claws are tightened against the large end face of the turbocharger housing and the outer flange 19 at the upper end of the vertical part of the claw hooks the second circumferential inner boss 121 in the large end face of the turbocharger housing. At the same time, the three second oil cylinders are started to make the piston rods thereof extend, and the piston rod of the second oil cylinder 8 drives the top rod to move upward and tightly abut against the edge of the large end face of the turbocharger housing. It can be seen that the positioning of the turbocharger housing 12 to be machined can be realized by only operating the first oil cylinder 17 and the second oil cylinder 8.

Claims

1. A positioning device for turbocharger housing machining, characterized in that: The utility model provides a centering device, including chassis (1), the chuck (2) of being connected with chassis (1) on chassis (1), the center hole of chassis (1) and chuck (2) all have, the center hole of chassis (1) is connected with first oil cylinder (17), the piston rod outer end of first oil cylinder (17) is upwards and stretches into the center hole of chuck (2) inside, the center hole of chuck (2) has movable head (9), the movable head (9) is cylindrical, its lower end with the piston rod outer end of first oil cylinder (17) is activity state connection together, the upper end surface of chuck (2) has dust cover (3), the dust cover (3) is three pronged board, its upper sequentially is connected with predetermined shaft (5) and end cover (4), the upper surface of chuck (2) is evenly distributed with three upper radial slots, three upper radial slots all have claw (6) inside, the claw (6) is L-shaped, its vertical part is lower than the end cover (4), its horizontal part all faces outward and with the groove bottom of corresponding upper radial slot is sliding fit, the groove bottom of upper radial slot all has lower radial slot (23), lower radial slot (23) all have shift fork (21) inside, the shift fork (21) is reverse L-shaped, its horizontal part and vertical part are inward and upward respectively, its vertical part's upper end outer edge all has outer hook (19), its vertical part and horizontal part's connecting point is hinged in corresponding lower radial slot (23) inside, the outer circumference of movable head (9) corresponding with the horizontal part of shift fork (21) all has three first recesses, the horizontal part lower surface of claw (6) corresponding with the vertical part of shift fork (21) all has second recess, the horizontal part and vertical part outer end of shift fork (21) are activity state and stretch into first recess and second recess inside respectively.

2. The turbocharger housing machining positioning device of claim 1, wherein: The lower end of movable head (9) has T-shaped groove, the outer end of piston rod of first oil cylinder (17) has T-shaped head, the T-shaped head is activity state and embedded in T-shaped groove.

3. The turbocharger housing machining positioning device of claim 2, wherein: The piston rod of first oil cylinder (17) contains rod body (16) and first connecting rod (10), the outer end of rod body (16) is connected with one end of first connecting rod (10), the other end of first connecting rod (10) has T-shaped head, the T-shaped head is activity state and embedded in T-shaped groove.

4. The turbocharger housing machining positioning apparatus of claim 1, wherein: The chassis (1) and chuck (2) all have corresponding vertical hole (11) between adjacent claw (6), the outer circumference of chassis (1) corresponding with vertical hole (11) all has second oil cylinder (8), the outer end of piston rod of second oil cylinder (8) is activity state and stretches into radial hole (15) inside, the outer end of piston rod of second oil cylinder (8) and the lower end of top rod (7) all are inclined surface, and they are sliding fit.

5. The turbocharger housing machining positioning device of claim 4, wherein: The diameter of vertical hole (11) on chassis (1) is smaller than the diameter of vertical hole (11) on chuck (2), and the section of top rod (7) in vertical hole (11) on chassis (1) has circumferential boss (71) for limiting.

6. The positioning device for turbocharger housing machining according to claim 4, characterized in that: The radial hole (15) in the piston rod of the second oil cylinder (8) has the second connecting rod (13) and the top head (14) in sequence; one end of the second connecting rod (13) is connected with the outer end of the piston rod of the second oil cylinder (8), and the other end is connected with one end of the top head (14); the other end of the top head (14) has the inclined surface, which is in sliding fit with the inclined surface of the lower end of the top rod (7).

7. The turbocharger housing machining positioning device according to any one of claims 1 to 6, characterized in that: The horizontal part of the claw (6) is connected with the sliding block (20) below, which is in sliding fit with the upper radial groove, and the second recess is located on the lower surface of the sliding block (20), and the vertical part of the shifting fork (21) is movably extended into the second recess.

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