Positioning tool for finish machining of piston rod sub-assembly

Abstract

The utility model discloses a positioning tool for finish machining of a piston rod sub-assembly, which belongs to the technical field of piston assembly machining and comprises a mounting frame fixedly arranged below a punching device and an upper movable plate rotationally connected above the mounting frame, and a circular positioning hole is formed in the middle of the upper movable plate. The gear rings are arranged on the upper side and the lower side of the upper movable plate respectively, the gear rings are rotationally connected with the upper movable plate, and the rotating axes of the gear rings coincide with the circles of the positioning holes; the longitudinal clamping piece is arranged on the side, away from the upper movable plate, of the gear ring, and the clamping piece can be aligned to the upper end and the lower end of the assembly to conduct limiting clamping, so that vertical position movement of the assembly is limited; according to the utility model, the clamping position of the clamping piece on the end part of the assembly can be quickly adjusted while the assembly is limited to move up and down, so that the assembly is processed more conveniently and quickly.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston assembly processing technical field, concretely is a kind of positioning tool for piston rod sub-assembly finish machining. BACKGROUND

[0002] Assembly finish machining can need to punch or polish on the end face of the upper and lower ends of assembly, in order to avoid that clamping equipment shields the machining end face, the existing piston assembly processing is generally fixed by clamping piece close to assembly side wall to fix the position of assembly, but the clamping equipment that only contacts side wall cannot effectively curb the up and down movement of assembly, especially when punching end door, it is more likely to make the assembly stress to move up and down position, although the clamping of upper and lower ends can limit the up and down movement of assembly, but clamping equipment will shield assembly equipment end, affect the processing of assembly, in order to ensure the overall processing of assembly end, it is necessary to loosen the clamping and replace the clamping position, so that the assembly end can be fully processed.

[0003] Based on this, the utility model discloses a kind of positioning tool for piston rod sub-assembly finish machining to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of positioning tool for piston rod sub-assembly finish machining, to be able to limit the up and down movement of assembly while can quickly adjust the clamping position of clamping piece to assembly end, so that assembly processing is more convenient and fast.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of positioning tool for piston rod sub-assembly finish machining, including fixedly arranged in the mounting frame below puncher and rotationally connected in the mounting frame upper movable plate, the middle position of the upper movable plate is provided with circular positioning hole, positioning assembly is provided on the positioning hole:

[0007] Gear ring, set two groups and are separately arranged in the upper movable plate upper and lower sides, the gear ring is rotationally connected with the upper movable plate and rotation axis is circularly coincident with the positioning hole;

[0008] Longitudinal clamping piece, clamping piece is arranged in the side of gear ring away from the upper movable plate, the clamping piece can be respectively from the upper and lower ends of assembly alignment position clamping, to limit the up and down position movement of assembly;

[0009] Lateral positioning piece, lateral positioning piece is rotationally arranged in the positioning hole inside and can be fixed by the side wall of assembly to the position of assembly;

[0010] The limiting assembly is arranged on both sides of the upper movable plate, and the limiting assembly can lock the position of the gear ring. When the limiting effect of the limiting assembly on the gear ring disappears, the limiting assembly can automatically push the gear ring away from the upper movable plate.

[0011] Preferably, the longitudinal clamping piece comprises a mounting seat, which is provided with a plurality of groups of mounting seats symmetrically arranged on the gear ring. An end of the mounting seat away from the gear ring is slidingly connected with a sliding frame. One end of the sliding frame is fixedly connected with an electric telescopic rod. The free end of the electric telescopic rod is fixedly connected with a contact plate. The electric telescopic rod is arranged on both sides of the positioning hole. The contact plate can be in contact with the surface of the assembly workpiece from the upper and lower directions.

[0012] Preferably, the lateral positioning piece comprises an inner connecting ring, which is rotatably connected inside the positioning hole. The inner wall of the inner connecting ring is symmetrically provided with a contact piece, which is spliced by two groups of mutually perpendicular straight plates.

[0013] Preferably, the limiting assembly comprises:

[0014] A driving gear is arranged on both sides of the upper movable plate. The driving gear is engaged with the gear ring.

[0015] A sleeve pipe is arranged on both sides of the upper movable plate and between the upper and lower gear rings. The upper and lower ends of the sleeve pipe are slidingly connected with extrusion rods, which can be in contact with the surface of the gear ring.

[0016] A linkage is slidingly connected in the upper movable plate. One end of the linkage can be extruded into the sleeve pipe. The other end of the linkage can be in contact with the driving gear.

[0017] Preferably, the linkage comprises a connecting rod, which is slidingly connected in the upper movable plate. Both ends of the connecting rod are fixedly connected with push rods. One end of the push rod can be introduced into the sleeve pipe. After the push rod is introduced into the sleeve pipe, the push rod can push the extrusion rod to move upward and downward. One end of the push rod away from the sleeve pipe is fixedly connected with an elastic piece. The elastic piece is provided with an upper and lower telescopic spring, which can make both ends of the elastic piece in contact with the driving gear.

[0018] Preferably, a collecting piece is fixedly arranged below the mounting frame. The bottom of the collecting piece is provided with a clamping cover. The gear ring is fixedly connected with an introduction block, which is rotatably embedded in the upper movable plate. The sleeve pipe is fixedly connected with the upper movable plate through a fixing rod.

[0019] Preferably, the upper movable plate is provided with a movable slot corresponding to the position of the connecting rod, a connecting shaft is rotatably installed on the mounting frame, the connecting shaft is fixedly connected with the upper movable plate, a rotating motor is fixedly installed on one side of the mounting frame, and an output end of the rotating motor is fixedly connected with the connecting shaft.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] The utility model discloses a positioning assembly is fixed in the middle position of the positioning hole through the side positioning piece, and then the assembly processing piece is clamped and fixed from the upper and lower ends of the assembly processing piece through the longitudinal clamping piece, the longitudinal clamping piece limits the up-and-down movement of the assembly clamping piece, avoids the position movement of the assembly processing piece during punching and other processing operations, and when the end clamping position needs to be processed, the limiting assembly can quickly move away from the assembly processing piece, and simultaneously drive the longitudinal clamping piece to rotate, lock the longitudinal clamping piece after adjusting the position, and make the longitudinal clamping piece clamp on the assembly processing piece again, so that the device can quickly adjust the clamping position of the end, and the assembly processing efficiency is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0023] Figure 1 It is the overhead view angle structure schematic diagram of the utility model;

[0024] Figure 2 It is the side view angle structure schematic diagram of the utility model;

[0025] Figure 3 It is the overhead view angle structure schematic diagram of the utility model; Figure 2 It is the structure partial schematic diagram of A in the utility model;

[0026] Figure 4 It is the overhead view angle structure schematic diagram of the utility model; Figure 2 It is the structure partial schematic diagram of B in the utility model;

[0027] Figure 5 It is the structure section of the utility model; Figure 1 ;

[0028] Figure 6 It is the structure partial schematic diagram of C in the utility model; Figure 5 It is the structure partial schematic diagram of C in the utility model;

[0029] Figure 7 It is the structure section of the utility modelFigure 2 .

[0030] In the attached diagram: 1. Mounting frame; 2. Collector; 3. Upper movable plate; 4. Connecting shaft; 5. Gear ring; 6. Mounting base; 7. Sliding frame; 8. Electric telescopic rod; 9. Inner connecting ring; 10. Abutting element; 11. Drive gear; 12. Elastic element; 13. Sleeve; 14. Pressing rod; 15. Push rod; 16. Movable groove; 17. Connecting rod; 18. Guide block; 19. Fixing rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-7 This utility model provides a technical solution:

[0033] A positioning fixture for precision machining of a piston rod subassembly includes a mounting bracket 1 fixedly disposed below a punching device and an upper movable plate 3 rotatably connected above the mounting bracket 1. A circular positioning hole is provided in the middle of the upper movable plate 3, and a positioning component is provided in the positioning hole.

[0034] Two sets of gear rings 5 ​​are provided and are respectively located on the upper and lower sides of the upper movable plate 3. The gear rings 5 ​​are rotatably connected to the upper movable plate 3 and the rotation axis coincides with the circle of the positioning hole.

[0035] The longitudinal clamping member is located on the side of the gear ring 5 away from the upper movable plate 3. The clamping member can be aligned and clamped from the upper and lower ends of the assembly respectively, thereby restricting the vertical movement of the assembly.

[0036] The lateral positioning component is rotatably mounted inside the positioning hole and can fix the position of the assembly through the side wall of the assembly.

[0037] The limiting components are located on both sides of the upper movable plate 3. The limiting components can lock the position of the gear ring 5. When the limiting effect of the limiting components on the gear ring 5 disappears, the limiting components can automatically push the gear ring 5 away from the upper movable plate 3.

[0038] This invention uses a side positioning component to fix the assembly in the middle of the positioning hole. Then, a longitudinal clamping component clamps and fixes the assembly from both the top and bottom ends. The longitudinal clamping component restricts the vertical movement of the assembly clamping component, preventing positional movement of the assembly during punching and other processing operations. When the end clamping position needs to be processed, the limiting component can quickly move the longitudinal clamping component away from the assembly and simultaneously drive the longitudinal clamping component to rotate. After adjusting the position, the longitudinal clamping component is locked and then clamped onto the assembly again, ensuring that the device can quickly adjust the end clamping position and reduce assembly processing efficiency.

[0039] The longitudinal clamping component includes a mounting base 6, which has multiple sets symmetrically mounted on the gear ring 5. A sliding frame 7 is slidably connected to the end of the mounting base 6 furthest from the gear ring 5. An electric telescopic rod 8 is fixedly mounted to one end of the sliding frame 7, and an abutment plate is fixedly mounted to the free end of the electric telescopic rod 8. The electric telescopic rod 8 is positioned on the upper and lower sides of the positioning hole, and the abutment plate can abut against the surface of the assembly workpiece from both upper and lower directions. The sliding frame 7 slides on the mounting base 6, allowing the electric telescopic rod 8 to move to the position of the assembly. Then, the electric telescopic rod 8 drives the abutment plate closer to the assembly workpiece, and the abutment plate fixes the position of the assembly from both the upper and lower ends of the assembly workpiece.

[0040] The lateral positioning component includes an inner connecting ring 9, which is rotatably connected inside the positioning hole. Symmetrically arranged on the inner wall of the inner connecting ring 9 are contact members 10, each composed of two sets of perpendicular straight plates joined together. Under the action of the telescopic rod, the contact members extend evenly from both sides of the inner connecting ring 9 and abut against the side wall of the assembly, thereby fixing the assembly in the middle position of the positioning hole.

[0041] The limiting components include:

[0042] The driving gear 11 has two sets and is respectively set on the upper and lower sides of the upper movable plate 3. Both driving gears 11 mesh with the gear ring 5.

[0043] The sleeve 13 is located on both sides of the upper movable plate 3 and between the upper and lower gear rings 5. Both ends of the sleeve 13 are slidably connected to the pressing rods 14, which can abut against the surface of the gear rings 5.

[0044] The linkage is slidably connected inside the upper movable plate 3. One end of the linkage can be squeezed into the sleeve 13, and the other end of the linkage can abut against the drive gear 11.

[0045] In this invention, when the linkage slides towards the sleeve 13, its resistance to the drive gear 11 disappears, allowing the drive gear 11 to rotate. Simultaneously, one end of the linkage is inserted into the sleeve 13 to push the pressing rod 14, causing the pressing rod 14 to push the gear ring 5 from both the upper and lower sides. This causes the upper gear ring 5 to move upward and the lower gear ring 5 to move downward, thereby moving the contact plate away from the assembly machining part. Then, the drive gear 11 rotates, causing the gear ring 5 to rotate, thereby adjusting the position of the contact plate and facilitating the user to quickly adjust the clamping position at the end of the assembly machining part.

[0046] The linkage includes a connecting rod 17, which is slidably connected to the upper movable plate 3. Both ends of the connecting rod 17 are fixedly installed with push rods 15. One end of the push rod 15 can be inserted into the sleeve 13. After the push rod 15 is inserted into the sleeve 13, it can push the pressing rod 14 to move to the upper and lower sides respectively. The end of the push rod 15 away from the sleeve 13 is fixedly installed with an elastic element 12. The elastic element 12 is provided with a spring that can extend and retract vertically, so that both the upper and lower ends of the elastic element 12 abut against the drive gear 11. The connecting rod 17 slides and drives the push rod 15 into the sleeve 13, thereby moving the elastic element 12 away from the drive gear. The push rod 15 pushes the pressing rod 14. After adjustment, the connecting rod 17 is reset, and the elastic element 12 is re-engaged between the drive gears 11, thereby locking the drive gears 11 and locking the position of the gear ring 5 and its longitudinal clamping member. At the same time, the push rod 15 is pulled out from the sleeve 13, so that the gear ring 5 is reset and close to the upper movable plate 3, so that the longitudinal clamping member on the gear ring 5 is re-clamped to the end of the assembly.

[0047] The mounting frame 1 has a collector 2 fixedly installed below it. The bottom of the collector 2 is equipped with a snap-fit ​​cover. An inlet block 18 is fixedly installed on each gear ring 5. The inlet block 18 rotates and embeds into the upper movable plate 3. The sleeve pipe 13 is fixedly connected to the upper movable plate 3 through a fixing rod 19. The collector 2 can automatically collect processing waste.

[0048] The upper movable plate 3 has a movable groove 16 corresponding to the position of the connecting rod 17. A connecting shaft 4 is rotatably mounted on the mounting frame 1 and is fixedly connected to the upper movable plate 3. A rotary motor is fixedly mounted on one side of the mounting frame 1, and the output end of the rotary motor is fixedly connected to the connecting shaft 4. The rotation of the connecting shaft 4 drives the upper movable plate 3 to rotate. The upper movable plate 3 can be flipped to change the upper and lower ends of the assembly machining parts, avoiding the trouble of disassembling the assembly machining parts and then flipping them.

Claims

1. A positioning fixture for precision machining of a piston rod sub-assembly, comprising a mounting bracket (1) fixedly disposed below a punching device and an upper movable plate (3) rotatably connected above the mounting bracket (1), characterized in that: A circular positioning hole is provided in the middle of the upper movable plate (3), and a positioning component is provided in the positioning hole: Two sets of gear rings (5) are provided and are respectively located on the upper and lower sides of the upper movable plate (3). The gear rings (5) are rotatably connected to the upper movable plate (3) and the rotation axis coincides with the circle of the positioning hole. A longitudinal clamping member is provided on the side of the gear ring (5) away from the upper movable plate (3). The clamping member can be aligned and clamped from the upper and lower ends of the assembly respectively, thereby restricting the vertical movement of the assembly. A lateral positioning component is rotatably disposed inside the positioning hole, which can fix the position of the assembly through the side wall of the assembly; The limiting components are disposed on both sides of the upper movable plate (3). The limiting components can lock the position of the gear ring (5). When the limiting effect of the limiting components on the gear ring (5) disappears, the limiting components can automatically push the gear ring (5) away from the upper movable plate (3).

2. The positioning fixture for precision machining of a piston rod sub-assembly according to claim 1, characterized in that: The longitudinal clamping component includes a mounting base (6), which is provided in multiple sets and symmetrically mounted on the gear ring (5). A sliding frame (7) is slidably connected to one end of the mounting base (6) away from the gear ring (5). An electric telescopic rod (8) is fixedly mounted on one end of the sliding frame (7). An abutment plate is fixedly mounted on the free end of the electric telescopic rod (8). The electric telescopic rod (8) is respectively arranged on the upper and lower sides of the positioning hole. The abutment plate can abut against the surface of the assembly machining part from both the upper and lower directions.

3. The positioning fixture for precision machining of a piston rod sub-assembly according to claim 2, characterized in that: The lateral positioning component includes an inner connecting ring (9), which is rotatably connected inside the positioning hole. The inner wall of the inner connecting ring (9) is symmetrically provided with abutment members (10), which are formed by splicing two sets of mutually perpendicular straight plates.

4. A positioning fixture for precision machining of a piston rod sub-assembly according to claim 3, characterized in that: The limit components include: The driving gear (11) is provided in two sets and is respectively provided on the upper and lower sides of the upper movable plate (3). The driving gear (11) meshes with the gear ring (5). The sleeve (13) is disposed on both sides of the upper movable plate (3) and between the gear rings (5) arranged above and below. Both ends of the sleeve (13) are slidably connected with the pressing rod (14), and the pressing rod (14) can abut against the surface of the gear ring (5). The linkage is slidably connected inside the upper movable plate (3), one end of the linkage can be squeezed into the inside of the sleeve (13), and the other end of the linkage can abut against the drive gear (11).

5. A positioning fixture for precision machining of a piston rod sub-assembly according to claim 4, characterized in that: The linkage includes a connecting rod (17), which is slidably connected to the upper movable plate (3). Both ends of the connecting rod (17) are fixedly installed with push rods (15). One end of the push rod (15) can be inserted into the sleeve (13). After the push rod (15) is inserted into the sleeve (13), it can push the pressing rod (14) to move up and down respectively. The end of the push rod (15) away from the sleeve (13) is fixedly installed with an elastic element (12). The elastic element (12) is provided with a spring that can extend and retract vertically, so that both ends of the elastic element (12) abut against the drive gear (11).

6. A positioning fixture for precision machining of a piston rod sub-assembly according to claim 5, characterized in that: A collection component (2) is fixedly installed below the mounting bracket (1). A snap-fit ​​cover is provided at the bottom of the collection component (2). An inlet block (18) is fixedly installed on each gear ring (5). The inlet block (18) is rotatably embedded into the upper movable plate (3). The sleeve pipe (13) is fixedly connected to the upper movable plate (3) through a fixing rod (19).

7. A positioning fixture for precision machining of a piston rod sub-assembly according to claim 6, characterized in that: The upper movable plate (3) has a movable groove (16) at the position corresponding to the connecting rod (17). A connecting shaft (4) is rotatably mounted on the mounting frame (1). The connecting shaft (4) is fixedly connected to the upper movable plate (3). A rotating motor is fixedly mounted on one side of the mounting frame (1). The output end of the rotating motor is fixedly connected to the connecting shaft (4).

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