Machining center positioning clamp

Abstract

The utility model relates to the technical field of workpiece machining, and discloses a machining center positioning clamp which comprises a bottom plate, four supporting seats are evenly and fixedly arranged on the periphery of the bottom face of the bottom plate, a containing seat is fixedly arranged on the top face of the bottom plate, a containing plate is arranged above the containing seat, a positioning mechanism is arranged below the containing plate, and a limiting mechanism is arranged above the containing seat. A placing groove is vertically and downwards formed in the placing seat, four adjusting grooves are vertically and downwards formed in the top surface of the placing plate and are uniformly formed in the periphery of the top surface of the placing plate, the positioning mechanism comprises an adjusting part and a positioning part, the limiting mechanism comprises a connecting part and a springback part, and a connecting rod at the upper end of the adjusting plate drives a positioning rod to move. Limiting rods below the positioning rods slide in limiting grooves, the positioning rods are positioned, the distance of the positioning rods can be adjusted, machined parts of different sizes can be clamped and positioned, operation is easy, the device can be suitable for the machined parts of different sizes, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece processing, in particular to a positioning fixture for a processing center. Background Art

[0002] Nowadays, in the manufacturing process, the use of fixtures is more common. The fixture is a process device used to quickly fasten the workpiece during processing to keep the machine tool, tool, and workpiece in the correct relative position;

[0003] Existing fixtures can only clamp one type of part or similar parts, and are not convenient for clamping and positioning parts of other sizes. The fixtures need to be replaced from time to time, resulting in low versatility of the fixtures.

[0004] Therefore, a positioning fixture for a machining center is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning fixture for a machining center to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning fixture for a machining center, comprising a bottom plate, four supporting seats are evenly and fixedly arranged around the bottom surface of the bottom plate, a placing seat is fixedly arranged on the top surface of the bottom plate, a placing plate is arranged above the placing seat, a positioning mechanism is arranged below the placing plate, and a limiting mechanism is arranged above the placing seat;

[0007] A placement groove is vertically opened inside the placement seat downwards, and an adjustment groove is vertically opened on the top surface of the placement plate downwards. There are four adjustment grooves, and the four adjustment grooves are evenly arranged around the top surface of the placement plate;

[0008] The positioning mechanism includes an adjusting portion and a positioning portion;

[0009] The limiting mechanism includes a connecting portion and a rebound portion.

[0010] Preferably, the adjusting part includes a lifting plate, the lifting plate is located at the center of the placement slot, an output cylinder is arranged directly below the lifting plate, the bottom surface of the output cylinder is fixedly connected to the inner bottom surface of the placement slot, and the output end of the output cylinder is fixedly connected to the bottom surface of the lifting plate.

[0011] Preferably, four connecting blocks are evenly and fixedly arranged on the outer side surface of the lifting plate, and adjustment plates are arranged on both sides of the four connecting blocks. The lower ends of the two adjusting plates on the same side are rotatably connected to the adjacent connecting blocks, and connecting rods are fixedly arranged on the adjacent sides of the upper ends of the two adjusting plates on the same side.

[0012] Preferably, the positioning part includes a positioning rod, and four positioning rods are evenly arranged. The upper ends of the four positioning rods pass through adjacent adjustment grooves and are slidably connected to the inner walls of the adjacent adjustment grooves. The outer sides of the lower ends of the four positioning rods are all provided with sliding grooves, and the connecting rod is located inside the sliding groove and is slidably connected to the inner wall of the sliding groove.

[0013] Preferably, four L-shaped limit frames are evenly and fixedly arranged on the inner wall of the placement groove, a limit groove is provided on the outer side of the L-shaped limit frame, a positioning groove is provided on the lower end of the positioning rod, the upper end of the L-shaped limit frame is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove, a limit rod is arranged inside the positioning groove, both ends of the limit rod are connected to bearings on the inner wall of the positioning groove, and the limit rod is located inside the limit groove and is slidably connected to the inner wall of the limit groove.

[0014] Preferably, positioning blocks are fixedly provided on the upper ends of the four positioning rods close to the sides.

[0015] Preferably, the connecting part includes a fixing frame, the bottom surface of the fixing frame is fixedly connected to the placing seat, a fixing block is arranged above the fixing frame, four fixing blocks are evenly arranged, and the four fixing blocks are fixedly connected to the side surfaces of the placing plate near the side surfaces, a sliding rod is arranged above the fixing block, the lower end of the sliding rod passes through the fixing block and the fixing frame in sequence and extends to the bottom of the fixing frame, the sliding rod is fixedly connected to the fixing block, and the lower end of the sliding rod is slidably connected to the fixing frame.

[0016] Preferably, the rebound part comprises a limit spring, the limit spring is sleeved on the outer side of the sliding rod, and the upper and lower ends of the limit spring are fixedly connected to the fixed block and the fixed frame respectively.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the positioning fixture for a machining center is

[0018] 1) The positioning rod is driven to move by adjusting the connecting rod at the upper end of the plate, and the limiting rod below the positioning rod slides inside the limiting groove to position the positioning rod. The distance of the positioning rod can be adjusted, and workpieces of different sizes can be clamped and positioned. The operation is simple and can be applied to workpieces of different sizes, thereby improving the applicability of the device.

[0019] 2) The reaction force generated by the expansion and contraction of the positioning block and the limit spring applies pressure to the upper and lower ends of the workpiece, limits the upper and lower ends of the workpiece, improves the stability of the workpiece during positioning and clamping, and facilitates the subsequent positioning and clamping of the workpiece by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0021] Figure 2This is a three-dimensional view of the placement seat of the utility model;

[0022] Figure 3 This is a three-dimensional view of the positioning mechanism of the utility model;

[0023] Figure 4 This is a three-dimensional view of the limiting mechanism of the utility model.

[0024] In the figure: 1 base plate, 2 support seat, 3 placement seat, 4 placement plate, 5 positioning mechanism, 51 lifting plate, 52 output cylinder, 53 connecting block, 54 adjustment plate, 55 connecting rod, 56 positioning rod, 57 limiting rod, 58 L-type limiting frame, 59 positioning block, 6 limiting mechanism, 61 fixing frame, 62 fixing block, 63 sliding rod, 64 limiting spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figure 1-Figure 4 The utility model provides a technical solution: a positioning fixture for a machining center, comprising a bottom plate 1, four support seats 2 are evenly and fixedly arranged around the bottom surface of the bottom plate 1, a placement seat 3 is fixedly arranged on the top surface of the bottom plate 1, a placement plate 4 is arranged above the placement seat 3, a positioning mechanism 5 is arranged below the placement plate 4, and a limiting mechanism 6 is arranged above the placement seat 3;

[0028] A placement groove is vertically opened inside the placement seat 3, and an adjustment groove is vertically opened on the top surface of the placement plate 4. There are four adjustment grooves, which are evenly arranged around the top surface of the placement plate 4.

[0029] The positioning mechanism 5 includes an adjusting portion and a positioning portion;

[0030] The limiting mechanism 6 includes a connecting portion and a rebound portion.

[0031] The adjustment part includes a lifting plate 51, which is located at the center of the placement slot. An output cylinder 52 is arranged directly below the lifting plate 51. The bottom surface of the output cylinder 52 is fixedly connected to the bottom surface of the placement slot, and the output end of the output cylinder 52 is fixedly connected to the bottom surface of the lifting plate 51.

[0032] Four connecting blocks 53 are evenly fixedly arranged on the outer side of the lifting plate 51, and adjusting plates 54 are arranged on both sides of the four connecting blocks 53. The lower ends of the two adjusting plates 54 on the same side are rotatably connected to the adjacent connecting blocks 53, and the upper ends of the two adjusting plates 54 on the same side are fixedly arranged with connecting rods 55 on the adjacent sides.

[0033] The positioning part includes positioning rods 56, and four positioning rods 56 are evenly arranged. The upper ends of the four positioning rods 56 pass through the adjacent adjustment grooves and are slidably connected to the inner walls of the adjacent adjustment grooves. The outer sides of the lower ends of the four positioning rods 56 are all provided with sliding grooves. The connecting rod 55 is located inside the sliding groove and is slidably connected to the inner wall of the sliding groove.

[0034] Four L-shaped limit frames 58 are evenly fixedly arranged on the inner wall of the placement groove, and a limit groove is arranged on the outer side of the L-shaped limit frame 58. A positioning groove is arranged on the lower end of the positioning rod 56. The upper end of the L-shaped limit frame 58 is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove. A limit rod 57 is arranged inside the positioning groove, and both ends of the limit rod 57 are connected to the bearings on the inner wall of the positioning groove. The limit rod 57 is located inside the limit groove and is slidably connected to the inner wall of the limit groove. A positioning block 59 is fixedly arranged near the side of the upper ends of the four positioning rods 56;

[0035] Furthermore, in this embodiment, the output cylinder 52 drives the lifting plate 51 to move up and down, and the lifting plate 51 drives the adjustment plate 54 to move by relying on the connecting block 53. The connecting rod 55 at the upper end of the adjustment plate 54 drives the positioning rod 56 to move, and the limiting rod 57 below the positioning rod 56 slides inside the limiting groove;

[0036] Furthermore, in this embodiment, the connecting rod 55 at the upper end of the adjusting plate 54 drives the positioning rod 56 to move, and the limiting rod 57 below the positioning rod 56 slides inside the limiting groove to position the positioning rod 56. The distance of the positioning rod 56 can be adjusted to clamp and position workpieces of different sizes. The operation is simple and can be applied to workpieces of different sizes, thereby improving the applicability of the device.

[0037] Embodiment 2

[0038] See also Figure 1-Figure 4 , and on the basis of the first embodiment, it is further obtained that: the connection part includes a fixing frame 61, the bottom surface of the fixing frame 61 is fixedly connected to the placement seat 3, a fixing block 62 is arranged above the fixing frame 61, four fixing blocks 62 are evenly arranged, and the four fixing blocks 62 are fixedly connected to the side of the placement plate 4 near the side, and a sliding rod 63 is arranged above the fixing block 62, and the lower end of the sliding rod 63 sequentially penetrates the fixing block 62 and the fixing frame 61 and extends to the bottom of the fixing frame 61, the sliding rod 63 is fixedly connected to the fixing block 62, and the lower end of the sliding rod 63 is slidably connected to the fixing frame 61;

[0039] The rebound part includes a limit spring 64, which is sleeved on the outer side of the sliding rod 63, and the upper and lower ends of the limit spring 64 are fixedly connected to the fixed block 62 and the fixed frame 61 respectively;

[0040] Furthermore, in this embodiment, when the workpiece is located on the placement plate 4, the positioning block 59 abuts against the upper end of the workpiece, and according to the height of the workpiece, the placement plate 4 moves downward, thereby driving the fixed block 62 and the sliding rod 63 to move. When the fixed block 62 moves, the limit spring 64 expands and contracts, and the pressure generated by the expansion and contraction of the limit spring 64 exerts a reaction force on the fixed block 62 and the placement plate 4;

[0041] Furthermore, this embodiment applies pressure to the upper and lower ends of the workpiece through the reaction force generated by the expansion and contraction of the positioning block 59 and the limit spring 64, limits the upper and lower ends of the workpiece, improves the stability of the workpiece during positioning and clamping, and facilitates the subsequent positioning and clamping of the workpiece by the device.

[0042] When in use, the output cylinder 52 drives the lifting plate 51 to rise and fall, and the lifting plate 51 relies on the connecting block 53 to drive the adjusting plate 54 to move. The connecting rod 55 at the upper end of the adjusting plate 54 drives the positioning rod 56 to move, and the limiting rod 57 below the positioning rod 56 slides inside the limiting groove to position the positioning rod 56. The distance of the positioning rod 56 can be adjusted, and workpieces of different sizes can be clamped and positioned. When the workpiece is located on the placement plate 4, the positioning block 59 abuts against the upper end of the workpiece, and the placement plate 4 is moved downward according to the height of the workpiece, thereby driving the fixed block 62 and the sliding rod 63 to move. When the fixed block 62 moves, the limiting spring 64 is extended and retracted, and the pressure generated by the extension and retraction of the limiting spring 64 exerts a reaction force on the fixed block 62 and the placement plate 4, and the reaction force generated by the extension and retraction of the positioning block 59 and the limiting spring 64 applies pressure to the upper and lower ends of the workpiece, so as to limit the upper and lower ends of the workpiece.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for a machining center, comprising a base plate (1), characterized in that: Four support seats (2) are evenly and fixedly arranged around the bottom surface of the bottom plate (1); a placement seat (3) is fixedly arranged on the top surface of the bottom plate (1); a placement plate (4) is arranged above the placement seat (3); a positioning mechanism (5) is arranged below the placement plate (4); and a limiting mechanism (6) is arranged above the placement seat (3); The placement seat (3) has a placement groove vertically downwardly formed inside, and the placement plate (4) has an adjustment groove vertically downwardly formed on its top surface, wherein four adjustment grooves are provided, and the four adjustment grooves are evenly arranged around the top surface of the placement plate (4); The positioning mechanism (5) comprises an adjusting portion and a positioning portion; The limiting mechanism (6) comprises a connecting portion and a rebound portion.

2. A machining center positioning fixture according to claim 1, characterized in that: The regulating part comprises a lifting plate (51), the lifting plate (51) is located at the center of the placement slot, an output cylinder (52) is arranged directly below the lifting plate (51), the bottom surface of the output cylinder (52) is fixedly connected to the inner bottom surface of the placement slot, and the output end of the output cylinder (52) is fixedly connected to the bottom surface of the lifting plate (51).

3. A positioning fixture for a machining center according to claim 2, characterized in that: Four connecting blocks (53) are evenly and fixedly arranged on the outer side surface of the lifting plate (51), and adjustment plates (54) are arranged on both sides of the four connecting blocks (53). The lower ends of the two adjusting plates (54) on the same side are rotatably connected to the adjacent connecting blocks (53), and connecting rods (55) are fixedly arranged on the adjacent sides of the upper ends of the two adjusting plates (54) on the same side.

4. A machining center positioning fixture according to claim 1, characterized in that: The positioning part comprises a positioning rod (56), and four positioning rods (56) are evenly arranged. The upper ends of the four positioning rods (56) pass through the adjacent adjustment grooves and are slidably connected to the inner walls of the adjacent adjustment grooves. The outer sides of the lower ends of the four positioning rods (56) are all provided with sliding grooves. The connecting rod (55) is located inside the sliding groove and is slidably connected to the inner wall of the sliding groove.

5. A positioning fixture for a machining center according to claim 4, characterized in that: Four L-shaped limit frames (58) are evenly and fixedly arranged on the inner wall of the placement groove, and a limit groove is provided on the outer side surface of the L-shaped limit frame (58). A positioning groove is provided at the lower end of the positioning rod (56). The upper end of the L-shaped limit frame (58) is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove. A limit rod (57) is arranged inside the positioning groove, and both ends of the limit rod (57) are connected to bearings on the inner wall of the positioning groove. The limit rod (57) is located inside the limit groove and is slidably connected to the inner wall of the limit groove.

6. A positioning fixture for a machining center according to claim 5, characterized in that: Positioning blocks (59) are fixedly arranged on the upper ends of the four positioning rods (56) close to the side surfaces.

7. A positioning fixture for a machining center according to claim 1, characterized in that: The connecting portion comprises a fixing frame (61), the bottom surface of which is fixedly connected to the placement seat (3), a fixing block (62) is arranged above the fixing frame (61), four fixing blocks (62) are evenly arranged, and the four fixing blocks (62) are fixedly connected to the side surface of the placement plate (4) at adjacent sides, a sliding rod (63) is arranged above the fixing block (62), the lower end of which passes through the fixing block (62) and the fixing frame (61) in sequence and extends to the bottom of the fixing frame (61), the sliding rod (63) is fixedly connected to the fixing block (62), and the lower end of which is slidably connected to the fixing frame (61).

8. The positioning fixture for a machining center according to claim 1, characterized in that: The rebound part comprises a limit spring (64), the limit spring (64) is sleeved on the outer side of the sliding rod (63), and the upper and lower ends of the limit spring (64) are respectively fixedly connected to the fixed block (62) and the fixed frame (61).

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