Workpiece positioning base

Abstract

The utility model provides a workpiece positioning base which comprises a fixed base plate, a connecting plate is installed on one side of the fixed base plate, a fixed base is installed on the side, away from the fixed base plate, of the connecting plate, a connecting column is installed on the side, away from the connecting plate, of the fixed base, and an installation pipe is installed on the side, away from the fixed base, of the connecting column. One end of the mounting pipe is provided with a connecting column, the other end of the mounting pipe is provided with an embedded sleeve, the side, close to the mounting pipe, of the embedded sleeve is provided with a driving piece, and the side, close to the mounting pipe, of the connecting column is provided with a locking piece. Compared with the prior art, the workpiece fixing device has the advantages that the workpiece fixing effect is improved, and the problem that a workpiece shakes in the machining process is solved.

Description

Technical Field

[0001] The utility model relates to a workpiece positioning base, belonging to the field of workpiece processing positioning equipment. Background Art

[0002] The workpiece refers to the object to be processed during the machining process. It can be a single part or a combination of several parts fixed together. There are various types of workpiece processing methods, including turning, milling, planing, grinding, casting, forging, etc. The processing procedures of the workpiece also change with the changes in the processing methods. In the prior art, when the workpiece is processed for positioning operation, it is usually necessary to manually set the workstation sleeve on the outside of the mounting tube, and then install the upper limit on one side of the mounting tube so that the limit ring cooperates with the mounting tube to fix the position of the workpiece, and then drive the grinding wheel to grind the outer surface of the workpiece. However, when the limit ring is installed on the surface of the mounting tube to fix the position of the workpiece, due to the different sizes of the workpiece, it is impossible to ensure that the limit ring is always in contact with the surface of the workpiece. There is a gap between the limit ring and the workpiece, which affects the accuracy of the workpiece processing. Therefore, it is necessary to design a workpiece positioning base that can improve the workpiece fixing effect and prevent the workpiece from shaking. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a workpiece positioning base to solve the problems raised in the above-mentioned background technology. The utility model improves the fixing effect of the workpiece and reduces the problem of shaking of the workpiece during processing.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a workpiece positioning base, including a fixed chassis, a connecting plate is installed on one side of the fixed chassis, a fixed base is installed on the side of the connecting plate away from the fixed chassis, a connecting column is installed on the side of the fixed base away from the connecting plate, a mounting tube is installed on the side of the connecting column away from the fixed base, an inner nest is installed on the other end of the mounting tube, a driving member is installed on the side of the inner nest close to the mounting tube, and a locking member is installed on the side of the connecting column close to the mounting tube.

[0005] Furthermore, the driving member includes an installation groove, which is opened on the inner side of the fixed base. A hydraulic cylinder is installed inside the installation groove. A push rod is installed on one side of the hydraulic cylinder. The push rod is inserted inside the installation tube. A stud is installed at one end of the push rod away from the hydraulic cylinder, and an inner nest is installed on the stud.

[0006] Furthermore, the cross section of the inner nest is a trapezoid, and the diameter of the inner nest on the side away from the mounting tube gradually expands toward the outside.

[0007] Furthermore, the locking member includes a limit plate, four limit plates are evenly installed on the side of the mounting tube close to the connecting column, limit holes are provided on the limit plates, a plurality of positioning grooves are provided on the connecting column, a protective plate is covered above one side of the positioning groove, a circular hole is provided on the protective plate, the position and size of the circular hole match the limit hole, the limit plate is installed on the side of the positioning groove close to the protective plate, and a push plate is installed on the side of the positioning groove away from the protective plate.

[0008] Furthermore, the four push-in plates are fixedly installed on the protective ring, the inner diameter of the protective ring matches the outer diameter of the mounting tube, four positioning rods are evenly installed on one side of the protective ring close to the connecting column, the four positioning rods are evenly distributed in the gaps between the four push-in plates, and the diameter of the positioning rods matches the diameter of the circular hole and the limiting hole.

[0009] Furthermore, a control groove is formed on one side of the four push plates away from the mounting tube, and four movable grooves are formed on one side of the connecting column close to the protective ring, and the positions of the four movable grooves match the positions of the control grooves.

[0010] The beneficial effects of the utility model: the utility model provides a workpiece positioning base, which drives the push rod to retract through the hydraulic cylinder, so that the inner nest retracts into the inside of the mounting tube. Because the diameter of the outer side of the inner nest is larger than the inner diameter of the mounting tube, when the hydraulic cylinder drives the inner nest to retract into the inside of the mounting tube, the diameter of one end of the mounting tube will be expanded, so that the one end of the mounting tube is tightly fitted with the inner wall of the workpiece, thereby fixing the position of the workpiece, improving the fixing effect of the workpiece, and avoiding the workpiece from moving during the processing.

[0011] By cooperating with the control groove and the movable groove, the protective ring can be separated from the connecting column, so that the plug plate can be taken out of the positioning groove. When the protective ring moves outward, the positioning rod will follow the protective ring to move out of the round hole and the limit hole, thereby releasing the restriction on the position of the mounting tube. The mounting tube is rotated to move to the side of the movable groove away from the protective plate, and the mounting tube is separated from the connecting column and taken out, and the mounting tube is replaced, saving the maintenance cost of the mounting tube.

[0012] When the inner nest retracts into the mounting tube, the pressure at the points where the outer side of the inner nest contacts the inner wall of the mounting tube is the same, so that the inside of the mounting tube is evenly stressed, thereby reducing the probability of deformation of the mounting tube. The mounting tube is made of steel and has certain strength and toughness and can withstand a certain extrusion pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1This is a schematic diagram of the overall structure of a workpiece positioning base of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a fixed base in a workpiece positioning base of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of a mounting tube in a workpiece positioning base of the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of a protective ring in a workpiece positioning base of the utility model;

[0018] In the figure: 1. Fixed chassis; 2. Connecting plate; 3. Fixed base; 4. Connecting column; 5. Protective ring; 6. Mounting tube; 7. Inner nesting; 8. Mounting groove; 9. Hydraulic cylinder; 10. Push rod; 11. Stud; 12. Limit plate; 13. Limit hole; 14. Push plate; 15. Control groove; 16. Positioning rod. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a workpiece positioning base, including a fixed chassis 1, a connecting plate 2 is installed on one side of the fixed chassis 1, a fixed base 3 is installed on the side of the connecting plate 2 away from the fixed chassis 1, a connecting column 4 is installed on the side of the fixed base 3 away from the connecting plate 2, a mounting tube 6 is installed on the side of the connecting column 4 away from the fixed base 3, an inner nest 7 is installed on the other end of the mounting tube 6, a driving member is installed on the side of the inner nest 7 close to the mounting tube 6, a locking member is installed on the side of the connecting column 4 close to the mounting tube 6, the cross section of the inner nest 7 is a trapezoid, and the diameter of the inner nest 7 on the side away from the mounting tube 6 gradually expands toward the outside.

[0021] See also Figure 2 The driving member includes a mounting groove 8, which is opened on the inner side of the fixed base 3. A hydraulic cylinder 9 is installed inside the mounting groove 8. A push rod 10 is installed on one side of the hydraulic cylinder 9. The push rod 10 is inserted inside the mounting tube 6. A stud 11 is installed at one end of the push rod 10 away from the hydraulic cylinder 9. An inner nest 7 is installed on the stud 11. Through the cooperation of the set push rod 10 and the hydraulic cylinder 9, the stud 11 can be driven to retract into the push rod 10, so that the diameter of the front end of the mounting tube 6 expands, thereby fixing the position of the workpiece.

[0022] See also Figure 3 and Figure 4The locking member includes a limit plate 12. Four limit plates 12 are evenly installed on the side of the mounting tube 6 close to the connecting column 4. The limit plates 12 are all provided with limit holes 13. The connecting column 4 is provided with a plurality of positioning grooves. A protective plate is covered on one side of the positioning groove. A round hole is provided on the protective plate. The position and size of the round hole match the limit hole 13. The limit plate 12 is installed on the side of the positioning groove close to the protective plate. A push plate 14 is installed on the side of the positioning groove away from the protective plate. The four push plates 14 are fixedly installed on the protective ring 5. The inner diameter of the protective ring 5 matches the outer diameter of the mounting tube 6. The side of the protective ring 5 close to the connecting column 4 Four positioning rods 16 are evenly installed, and the four positioning rods 16 are evenly distributed in the gaps between the four push plates 14. The diameter of the positioning rod 16 matches the diameter of the circular hole and the limiting hole 13. A control groove 15 is provided on the side of the four push plates 14 away from the mounting tube 6, and four movable grooves are provided on the side of the connecting column 4 close to the protective ring 5. The positions of the four movable grooves match the positions of the control groove 15. Through the cooperation of the set control groove 15 and the movable groove, the push plates 14 can be lifted upward, thereby facilitating the removal of the positioning rod 16 from the circular hole and the limiting hole 13 to release the restriction on the position of the mounting tube 6.

[0023] Specific implementation method: The hydraulic cylinder 9 drives the push rod 10 to retract, so that the inner nest 7 retracts into the mounting tube 6. Because the outer diameter of the inner nest 7 is larger than the inner diameter of the mounting tube 6, when the hydraulic cylinder 9 drives the inner nest 7 to retract into the mounting tube 6, the diameter of one end of the mounting tube 6 will be expanded, so that one end of the mounting tube 6 is closely fitted with the inner wall of the workpiece, the position of the workpiece is fixed, the fixing effect of the workpiece is improved, and the workpiece is prevented from moving during the processing. The protection ring 5 can be separated from the connecting column 4 through the cooperation of the control groove 15 and the movable groove, so that the plug plate 14 can be taken out from the positioning groove, and the protective ring 5 can be moved. While moving outward, the positioning rod 16 will follow the protective ring 5 to move out of the circular hole and the limiting hole 13, thereby releasing the restriction on the position of the mounting tube 6, rotating the mounting tube 6 to move the mounting tube 6 to the side of the movable groove away from the protective plate, separating the mounting tube 6 from the connecting column 4, and replacing the mounting tube 6, saving the maintenance cost of the mounting tube 6, and when the inner nest 7 retracts into the mounting tube 6, the point pressure where the outer side of the inner nest 7 contacts the inner wall of the mounting tube 6 is the same, so that the inside of the mounting tube 6 is evenly stressed, thereby reducing the probability of deformation of the mounting tube 6, and the mounting tube 6 is made of steel, has certain strength and toughness, and can withstand a certain extrusion pressure.

[0024] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A workpiece positioning base, comprising a fixed chassis (1), characterized in that: A connecting plate (2) is mounted on one side of the fixed chassis (1); a fixed base (3) is mounted on the side of the connecting plate (2) away from the fixed chassis (1); a connecting column (4) is mounted on the side of the fixed base (3) away from the connecting plate (2); a mounting tube (6) is mounted on the side of the connecting column (4) away from the fixed base (3); an inner nest (7) is mounted on the other end of the mounting tube (6); a driving member is mounted on the side of the inner nest (7) close to the mounting tube (6); and a locking member is mounted on the side of the connecting column (4) close to the mounting tube (6).

2. A workpiece positioning base according to claim 1, characterized in that: The driving member comprises a mounting groove (8), wherein the mounting groove (8) is provided on the inner side of the fixed base (3), a hydraulic cylinder (9) is installed inside the mounting groove (8), a push rod (10) is installed on one side of the hydraulic cylinder (9), the push rod (10) is inserted inside the mounting tube (6), a stud (11) is installed on one end of the push rod (10) away from the hydraulic cylinder (9), and an inner nest (7) is installed on the stud (11).

3. A workpiece positioning base according to claim 1, characterized in that: The cross section of the inner nest (7) is a trapezoid, and the diameter of the inner nest (7) on the side away from the mounting tube (6) gradually expands toward the outside.

4. A workpiece positioning base according to claim 1, characterized in that: The locking member comprises a limit plate (12), four limit plates (12) are evenly mounted on a side of the mounting tube (6) close to the connecting column (4), the limit plates (12) are each provided with a limit hole (13), the connecting column (4) is provided with a plurality of positioning grooves, a protective plate is covered above one side of the positioning groove, a circular hole is provided on the protective plate, the position and size of the circular hole match the limit hole (13), the limit plate (12) is mounted on a side of the positioning groove close to the protective plate, and a push plate (14) is mounted on a side of the positioning groove away from the protective plate.

5. A workpiece positioning base according to claim 4, characterized in that: The four push-in plates (14) are fixedly mounted on the protective ring (5); the inner diameter of the protective ring (5) matches the outer diameter of the mounting tube (6); four positioning rods (16) are evenly mounted on one side of the protective ring (5) close to the connecting column (4); the four positioning rods (16) are evenly distributed in the gaps between the four push-in plates (14); the diameter of the positioning rods (16) matches the diameter of the circular hole and the limiting hole (13).

6. A workpiece positioning base according to claim 5, characterized in that: A control groove (15) is formed on the side of the four push plates (14) away from the mounting tube (6), and four movable grooves are formed on the side of the connecting column (4) close to the protective ring (5), and the positions of the four movable grooves match the positions of the control groove (15).

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