Positioning jig for machining mechanical parts

Abstract

The utility model relates to the technical field of mechanical part positioning, in particular to a positioning jig for mechanical part machining, which is characterized in that a placing groove is formed in the surface of a supporting seat, a moving rod is arranged in the placing groove, a driving motor is arranged on the side surface of the supporting seat, a moving plate is screwed on the surface of the moving rod, and a supporting shaft is arranged in the supporting plate; a positioning plate is arranged at one end of the supporting shaft, and a limiting clamping plate is arranged in the supporting shaft. The device has the beneficial effects that the moving rod can be driven by the driving motor to rotate, so that two groups of moving plates screwed on the moving rod can perform reverse displacement, and then a mechanical part can be positioned through the positioning plate arranged above the moving plates; when the bottom of the mechanical part needs to be machined, only the limiting clamping plate needs to be separated from the limiting plate to be matched with the bearing to rotate the positioning plate, and after the positioning plate rotates by 180 degrees, the limiting clamping plate is used for positioning, so that the bottom of the mechanical part can be machined, and the mechanical part does not need to be taken down to rotate by an angle for machining.

Description

Technical Field

[0001] The utility model relates to the field of mechanical parts positioning, in particular to a positioning fixture used for machining mechanical parts. Background Art

[0002] The cylinder head is installed on the cylinder body, sealing the cylinder from the top and forming a combustion chamber. It is often in contact with high-temperature and high-pressure fuel gas, so it bears a large thermal and mechanical load.

[0003] China Patent Network CN209110567U discloses a cylinder head clamp that is easy to position, including a base, first slide rails are provided on both sides of the top of the base, a first slider is slidably connected in the first slide rail, a fixing plate is symmetrically provided in the middle of the top of the base, a screw rod is connected between the two fixing plates through a bearing, a threaded sleeve is screwed on the screw rod, the threaded sleeve and the top of the two first sliders are in a horizontal plane, a support plate is fixed to the threaded sleeve and the top of the two first sliders, and the fastening bolts are loosened, and the staff moves the handle up and down to make the two second sliders move up and down in the second slide rails, so that the clamping plates on the left and right sides rise or fall at the same time. After positioning, it is fixed with fastening bolts, and the cylinder head is placed between the two clamping plates. The distance between the left and right clamping plates is adjusted according to the size of the cylinder head by starting the cylinder, thereby processing the cylinder head fixation.

[0004] However, in the above technical solution, after the mechanical parts are positioned and clamped, when the bottom of the parts needs to be processed, the staff is required to loosen the positioning device to rearrange the parts, and then use the positioning device to position them, which not only reduces the processing efficiency but also increases the labor intensity of the staff. For this reason, the utility model proposes a positioning fixture for mechanical parts processing to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning fixture for machining mechanical parts 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 machining mechanical parts, the positioning fixture for machining mechanical parts comprising: a support seat, a placement groove is opened on the surface of the support seat, a moving rod is arranged in the placement groove, a driving motor is arranged on the side of the support seat, and a moving plate is screwed on the surface of the moving rod;

[0007] A support plate, a through hole is opened on the side of the support plate, a bearing is arranged in the through hole, a support shaft is inserted in the bearing, a positioning plate is arranged at one end of the support shaft, a limiting plate is arranged on the side of the support plate, and a limiting clamping plate is arranged in the support shaft.

[0008] Preferably, the driving motor is fixedly connected to the side surface of the support base. A hole is formed in the end surface of the placement groove, and an auxiliary bearing is arranged in the hole. The moving rod is fixedly connected to the inner ring surface of the auxiliary bearing, and the transmission end of the driving motor is fixedly connected to the end surface of the moving rod. A chip discharge port is formed in the side surface of the placement groove.

[0009] Preferably, a left-handed thread is formed on the surface of one end of the moving rod, and a right-handed thread is formed on the surface of the other end of the moving rod. Two sets of moving plates are respectively screwed to the two ends of the moving rod, and the two sets of moving plates can be displaced in opposite directions by rotating the moving rod.

[0010] Preferably, one end of the support plate can be clamped into the end surface of the moving plate, and after the support plate is clamped into the end surface of the moving plate, it can be fixed by a positioning bolt.

[0011] Preferably, the support shaft is fixedly connected to the inner ring surface of the bearing. There are two sets of limiting plates, and the two sets of limiting plates are symmetrically distributed up and down with respect to the support shaft. The limiting plate is in a "C"-shaped plate structure.

[0012] Preferably, a lifting groove is formed in the end surface of the support shaft, and a limiting spring is arranged in the lifting groove. One end of the limiting spring is fixedly connected to the bottom of the lifting groove, and a base is arranged at the other end of the limiting spring.

[0013] Preferably, the limiting clamping plate is integrally in an "L"-shaped plate structure. There are two sets of limiting clamping plates, and the two sets of limiting clamping plates are symmetrically distributed with respect to the lifting groove. One end of the limiting clamping plate is fixedly connected to the side surface of the base, the limiting clamping plate can be inserted into the limiting plate, a sliding groove is formed in the side surface of the lifting groove, and the limiting clamping plate can slide up and down in the sliding groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The positioning jig for machining mechanical parts proposed by the present utility model can drive the moving rod to rotate through the driving motor, so that the two sets of moving plates screwed on the moving rod can be displaced in opposite directions, and then the mechanical parts can be positioned through the positioning plate arranged above the moving plate. When machining the bottom of the mechanical parts, only need to disengage the limiting clamping plate from the limiting plate and then cooperate with the bearing to rotate the positioning plate. After rotating 180°, use the limiting clamping plate for positioning again, so that the bottom of the mechanical parts can be machined, without taking the mechanical parts off and rotating the angle for machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram when the structure of the present utility model is inclined;

[0018] Figure 3 This is a top view of the structure of the utility model;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. Support seat; 2. Placement slot; 3. Moving rod; 4. Driving motor; 5. Moving plate; 6. Support plate; 7. Bearing; 8. Support shaft; 9. Positioning plate; 10. Limiting plate; 11. Limiting card plate;

[0021] 12. Auxiliary bearing; 13. Positioning bolt; 14. Lifting slot; 15. Limit spring; 16. Base; 17. Slide slot; 18. Chip removal port. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 4 The utility model provides a technical solution: a positioning fixture for machining mechanical parts, the positioning fixture for machining mechanical parts comprising: a support seat 1, a placement groove 2 is opened on the surface of the support seat 1, a moving rod 3 is arranged in the placement groove 2, a driving motor 4 is arranged on the side of the support seat 1, and a moving plate 5 is screwed on the surface of the moving rod 3;

[0025] A support plate 6, a through hole is provided on the side of the support plate 6, a bearing 7 is provided in the through hole, a support shaft 8 is inserted into the bearing 7, a positioning plate 9 is provided at one end of the support shaft 8, a limiting plate 10 is provided on the side of the support plate 6, and a limiting clamping plate 11 is provided in the support shaft 8;

[0026] When in use, the moving rod 3 can be driven to rotate by the driving motor 4, so that the two groups of moving plates 5 screwed on the moving rod 3 can be displaced in the opposite direction, and then the mechanical parts can be positioned by the positioning plate 9 arranged above the moving plate 5. When the bottom of the mechanical parts needs to be processed, it is only necessary to detach the limiting clamping plate 11 from the limiting plate 10 and then rotate the positioning plate 9 in conjunction with the bearing 7. After rotating 180°, the limiting clamping plate 11 is used for positioning, so that the bottom of the mechanical parts can be processed, and there is no need to remove the mechanical parts and rotate them for processing.

[0027] Embodiment 2

[0028] On the basis of Embodiment 1, a positioning plate 9 is provided for facilitating the positioning of mechanical parts. The driving motor 4 is fixedly connected to the side surface of the support base 1. A hole is opened at the end surface of the placing groove 2, and an auxiliary bearing 12 is arranged in the hole. The moving rod 3 is fixedly connected to the inner ring surface of the auxiliary bearing 12. The transmission end of the driving motor 4 is fixedly connected to the end surface of the moving rod 3. A chip discharge port 18 is opened on the side surface of the placing groove 2. The surface of one end of the moving rod 3 is provided with a left-handed thread, and the surface of the other end of the moving rod 3 is provided with a right-handed thread. Two groups of moving plates 5 are respectively screwed to both ends of the moving rod 3. By rotating the moving rod 3, the two groups of moving plates 5 can be displaced in the opposite direction;

[0029] During use, the driving motor 4 can be started to drive the moving rod 3 to rotate, so that the two groups of moving plates 5 can be displaced in the opposite direction, and the positioning plate 9 can clamp and position the mechanical parts. With the setting of the chip discharge port 18, when the chips generated during the machining of the mechanical parts fall into the placing groove 2, the chips in the placing groove 2 can be cleaned through the setting of the chip discharge port 18.

[0030] In order to facilitate the separation of the support plate 6 from the moving plate 5, one end of the support plate 6 can be clamped into the end surface of the moving plate 5. After the support plate 6 is clamped into the end surface of the moving plate 5, it can be fixed by a positioning bolt 13. When it is necessary to separate the support plate 6 from the moving plate 5, only the positioning bolt 13 needs to be rotated to make the positioning bolt 13脱离 from the support plate 6, so that the support plate 6 can be taken off from one end of the moving plate 5 more conveniently.

[0031] Embodiment 3

[0032] On the basis of Embodiment 2, a support shaft 8 is provided for facilitating the rotation of the positioned mechanical parts. The support shaft 8 is fixedly connected to the inner ring surface of the bearing 7. Two groups of limiting plates 10 are provided, and the two groups of limiting plates 10 are symmetrically distributed up and down with respect to the support shaft 8. The limiting plate 10 has a "C"-shaped plate structure. A lifting groove 14 is opened at the end surface of the support shaft 8, and a limiting spring 15 is arranged in the lifting groove 14. One end of the limiting spring 15 is fixedly connected to the bottom of the lifting groove 14, and a base 16 is arranged at the other end of the limiting spring 15. The limiting clamping plate 11 as a whole has an "L"-shaped plate structure. Two groups of limiting clamping plates 11 are provided, and the two groups of limiting clamping plates 11 are symmetrically distributed with respect to the lifting groove 14. One end of the limiting clamping plate 11 is fixedly connected to the side surface of the base 16, and the limiting clamping plate 11 can be inserted into the limiting plate 10. A sliding groove 17 is opened on the side surface of the lifting groove 14, and the limiting clamping plate 11 can slide up and down in the sliding groove 17;

[0033] When it is necessary to rotate the positioned mechanical parts during use, first pull the limit card plate 11 out of the limit plate 10, and then the support shaft 8 can be rotated by using the setting of the bearing 7, so that the mechanical parts behind the positioning plate 9 can be rotated. When the limit card plate 11 is rotated to the appropriate position, it can be reset with the help of the elastic force of the limit spring 15. The limit card plate 11 is inserted into the limit plate 10 to avoid the problem of secondary rotation of the support shaft 8.

[0034] During actual use, the moving rod 3 can be driven to rotate by the driving motor 4, so that the two groups of moving plates 5 screwed on the moving rod 3 can be displaced in the opposite direction, and then the mechanical parts can be positioned by the positioning plate 9 arranged above the moving plate 5. When it is necessary to process the bottom of the mechanical parts, it is only necessary to disengage the limiting clamp 11 from the limiting plate 10 and then rotate the positioning plate 9 in cooperation with the bearing 7. After rotating 180°, the limiting clamp 11 is used for positioning, so that the bottom of the mechanical parts can be processed, and there is no need to remove the mechanical parts and rotate them for processing. This avoids the need for the staff to loosen the positioning equipment to rearrange the parts when the bottom of the parts needs to be processed after the mechanical parts are positioned and clamped, and then use the positioning equipment to position them, which not only reduces the processing efficiency but also increases the labor intensity of the staff.

[0035] Although 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 machining mechanical parts, characterized in that: The positioning fixture for machining mechanical parts includes: a support base (1), a placement groove (2) is provided on the surface of the support base (1), a moving rod (3) is arranged in the placement groove (2), a driving motor (4) is arranged on the side of the support base (1), and a moving plate (5) is screwed on the surface of the moving rod (3); A support plate (6), a through hole is provided on the side of the support plate (6), a bearing (7) is arranged in the through hole, a support shaft (8) is inserted into the bearing (7), a positioning plate (9) is arranged at one end of the support shaft (8), a limiting plate (10) is arranged on the side of the support plate (6), and a limiting clamping plate (11) is arranged in the support shaft (8).

2. A positioning fixture for machining mechanical parts according to claim 1, characterized in that: The driving motor (4) is fixedly connected to the side of the support base (1), a hole is provided at the end face of the placement groove (2), an auxiliary bearing (12) is arranged in the hole, the moving rod (3) is fixedly connected to the inner ring surface of the auxiliary bearing (12), the transmission end of the driving motor (4) is fixedly connected to the end face of the moving rod (3), and a chip discharge port (18) is provided on the side of the placement groove (2).

3. The positioning fixture for machining mechanical parts according to claim 1, characterized in that: One end surface of the moving rod (3) is provided with a left-handed thread, the other end surface of the moving rod (3) is provided with a right-handed thread, and two groups of moving plates (5) are respectively screwed on the two ends of the moving rod (3), and the two groups of moving plates (5) can be displaced in opposite directions by rotating the moving rod (3).

4. The positioning fixture for machining mechanical parts according to claim 1, characterized in that: One end of the support plate (6) can be clamped into the end face of the moving plate (5), and after the support plate (6) is clamped into the end face of the moving plate (5), it can be fixed by a positioning bolt (13).

5. The positioning fixture for machining mechanical parts according to claim 1, characterized in that: The support shaft (8) is fixedly connected to the inner ring surface of the bearing (7), there are two groups of limiting plates (10), and the two groups of limiting plates (10) are symmetrically distributed up and down with respect to the support shaft (8), and the limiting plate (10) is in a "C"-shaped plate structure.

6. The positioning fixture for machining mechanical parts according to claim 1, characterized in that: A lifting groove (14) is provided at the end face of the support shaft (8), a limiting spring (15) is arranged in the lifting groove (14), one end of the limiting spring (15) is fixedly connected to the bottom of the lifting groove (14), and a base (16) is arranged at the other end of the limiting spring (15).

7. The positioning fixture for machining mechanical parts according to claim 1, characterized in that: The limiting clamping plate (11) is integrally in an "L"-shaped plate structure, there are two groups of limiting clamping plates (11), and the two groups of limiting clamping plates (11) are symmetrically distributed with respect to the lifting groove (14), one end of the limiting clamping plate (11) is fixedly connected to the side of the base (16), the limiting clamping plate (11) can be inserted into the limiting plate (10), a sliding groove (17) is provided on the side of the lifting groove (14), and the limiting clamping plate (11) can slide up and down in the sliding groove (17).

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