Positioning device for preventing workpiece from jumping during finish machining of pig iron casting

Abstract

The utility model belongs to the technical field of pig iron casting finish machining, and discloses a positioning device for preventing a workpiece from jumping during pig iron casting finish machining, which comprises a dial indicator body, the bottom end of the dial indicator body is in threaded connection with a measuring head and is provided with a first mounting seat, and the bottom end of the first mounting seat is provided with a first chute. A second mounting seat is slidably mounted in the first sliding groove, a second sliding groove penetrates through the top end of the second mounting seat, a third mounting seat is slidably mounted in the second sliding groove, a third sliding groove penetrates through the top end of the third mounting seat, locking mechanisms are mounted at the bottom ends of the two sides of the third sliding groove, and a protective cover is mounted at the bottom end of the third mounting seat. The device can protect the dial indicator, reduces the influence on the measurement precision due to the damage of transmission parts in the dial indicator caused by collision, and can quickly replace the measuring head, thereby prolonging the service life of the positioning device for preventing the workpiece from jumping during finish machining of the pig iron casting, and ensuring the measurement precision during measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of pig iron casting finishing, and more specifically, particularly relates to a positioning device for preventing workpieces from jumping during pig iron casting finishing. Background Art

[0002] Precision machining technology refers to various machining processes with machining accuracy and surface finish higher than the corresponding machining methods. Precision machining technology includes precision cutting (such as diamond boring, precision turning, wide blade planing, etc.) and high-finish and high-precision grinding. The machining accuracy of precision machining is generally 10 to 0.1μm, the tolerance grade is above IT5, and the surface roughness Ra is below 0.1μm.

[0003] When performing high-precision grinding on the surface of a round cast iron casting, a fixture is usually used to clamp the casting and perform rotation processing. However, problems such as equipment wear and aging and the weight of the casting itself can cause the casting to jump during rotation, which in turn leads to a decrease in the quality of the finished product. A positioning device is required to detect the jumping of the casting. When a micrometer is used as a positioning device to prevent the workpiece from jumping during the fine processing of cast iron castings, due to the large number of internal transmission mechanisms of the micrometer, collisions can cause internal components to be dislocated and damaged, affecting the measurement accuracy. In addition, the measuring head of the micrometer will rub against the casting during measurement, which will cause wear and increase errors after long-term use.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a positioning device is provided to prevent the workpiece from jumping during the fine processing of pig iron castings, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a positioning device for preventing workpiece from jumping during fine machining of pig iron castings, which is achieved by the following specific technical means:

[0006] A positioning device for preventing workpiece from jumping during fine machining of pig iron castings, comprises a micrometer body, a measuring head is threadedly connected to the bottom end of the micrometer body, a first mounting seat is installed at the bottom end of the micrometer body, a first slide groove is provided at the bottom end of the first mounting seat, a second mounting seat is slidably installed in the first slide groove, a second slide groove is penetrated at the top end of the second mounting seat, a third mounting seat is slidably installed in the second slide groove, a third slide groove is penetrated at the top end of the third mounting seat, locking mechanisms are installed at the bottom ends of both sides of the third slide groove, a protective cover is installed at the bottom end of the third mounting seat, a pair of first triangular blocks are symmetrically installed on both sides of the top end of the protective cover located in the protective cover, and limiting mechanisms are installed at the bottom ends of both sides of the first mounting seat.

[0007] Furthermore, the locking mechanism includes a pair of fourth slide grooves, the pair of fourth slide grooves are symmetrically opened on both sides of the third mounting seat, and the fourth slide groove is connected to the third slide groove, a mounting plate is slidably installed in the fourth slide groove, and the two ends of the mounting plate are respectively located on both sides of the fourth slide groove, and a second triangular block is installed at the bottom end of the mounting plate on one side located in the third slide groove, a plurality of first springs are installed on one side of the second triangular block, and the other end of the first spring is connected to one side of the third slide groove.

[0008] Furthermore, the size of the second triangular block matches the size of the first triangular block.

[0009] Furthermore, a pressing plate is installed on one side of the mounting plate located outside the third mounting seat.

[0010] Furthermore, the limiting mechanism includes a pair of L-shaped mounting seats, which are symmetrically installed at the bottom ends of both sides of the first mounting seat, and the L-shaped mounting seat is provided with a fifth sliding groove on the side close to the second mounting seat, and a limiting block is slidably installed on one side of the fifth sliding groove, and a second spring is installed on the other side of the fifth sliding groove, and the other end of the second spring is connected to the limiting block, and a pulling block is installed on one side of the limiting block.

[0011] Furthermore, a clamping block is installed on the peripheral side of the first mounting seat, and an anti-slip pad is installed on the peripheral side of the clamping block.

[0012] Furthermore, an anti-collision sponge pad is installed around the dial of the micrometer body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The positioning device for preventing the workpiece from jumping during the fine machining of pig iron castings in the utility model, through the coordinated use of the protective cover, the first triangular clamping block, the limiting mechanism, the first mounting seat, the second mounting seat, the third mounting seat, the first slide groove, the second slide groove, the third slide groove, the locking mechanism and the anti-collision sponge pad, is convenient for anti-collision protection of the measuring rod of the micrometer and the internal transmission mechanism, and the second mounting seat can be quickly retracted during measurement so that the measuring head can contact the casting, and the measuring head can be replaced after being used for a period of time, thereby extending the service life of the positioning device for preventing the workpiece from jumping during the fine machining of pig iron castings and ensuring the measurement accuracy during measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0016] Figure 2 The utility model is a three-dimensional exploded schematic diagram of a part of the structure at the bottom of the dial gauge body.

[0017] Figure 3 It is a front cross-sectional schematic diagram of a partial structure of the utility model.

[0018] Figure 4 The utility model Figure 3 Enlarged schematic diagram of part A.

[0019] Figure 5 The utility model Figure 3 Schematic diagram of the enlarged portion B.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Micrometer body; 2. Measuring head; 3. First mounting seat; 4. First slide groove; 5. Second mounting seat; 6. Second slide groove; 7. Third mounting seat; 8. Third slide groove; 9. Protective cover; 10. First triangular clamp block; 11. Fourth slide groove; 12. Mounting plate; 13. Second triangular clamp block; 14. First spring; 15. Pressing plate; 16. L-shaped mounting seat; 17. Fifth slide groove; 18. Limit block; 19. Second spring; 20. Pull block; 21. Clamping block; 22. Anti-collision sponge pad. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 5 As shown:

[0027] The utility model provides a positioning device for preventing workpieces from jumping during fine machining of pig iron castings, comprising a dial gauge body 1, a measuring head 2 being threadedly connected to the bottom end of the dial gauge body 1, a first mounting seat 3 being installed at the bottom end of the dial gauge body 1, a first slide groove 4 being provided at the bottom end of the first mounting seat 3, a second mounting seat 5 being slidably installed in the first slide groove 4, a second slide groove 6 being penetrated at the top end of the second mounting seat 5, a third mounting seat 7 being slidably installed in the second slide groove 6, a third slide groove 8 being penetrated at the top end of the third mounting seat 7, locking mechanisms being installed at the bottom ends of both sides of the third slide groove 8, a protective cover 9 being installed at the bottom end of the third mounting seat 7, a pair of first triangular clamping blocks 10 being symmetrically installed at the top end of the protective cover 9 on both sides located in the protective cover 9, and limiting mechanisms being installed at the bottom ends of both sides of the first mounting seat 3.

[0028] Among them, the locking mechanism includes a pair of fourth slide grooves 11, and the pair of fourth slide grooves 11 are symmetrically arranged on both sides of the third mounting seat 7, and the fourth slide groove 11 is connected to the third slide groove 8, a mounting plate 12 is slidably installed in the fourth slide groove 11, and the two ends of the mounting plate 12 are respectively located on both sides of the fourth slide groove 11, and the mounting plate 12 is installed with a second triangular block 13 at the bottom end of one side located in the third slide groove 8, and a plurality of first springs 14 are installed on one side of the second triangular block 13, and the other end of the first spring 14 is connected to one side of the third slide groove 8. When the protective cover 9 is installed, the inclined surface of the first triangular block 10 fits with the inclined surface of the second triangular block 13, pushing When the protective cover 9 is removed, a pair of second triangular blocks 13 can be driven to move to the opposite side. When the first triangular block 10 moves to a position above the second triangular block 13, the second triangular block 13 is engaged with the first triangular block 10 under the pulling action of the first spring 14 to reset, thereby fixing the protective cover 9 and further protecting the measuring rod and measuring head 2 of the dial gauge body 1. When the dial gauge needs to be used for measurement, the pressing block is pressed to drive the second triangular block 13 to move relatively through the mounting plate 12, so that the second triangular block 13 is no longer engaged with the first triangular block 10. At this time, the protective cover 9 can be removed by pulling the protective cover 9 downward.

[0029] The size of the second triangular clamping block 13 matches the size of the first triangular clamping block 10 , so that the second triangular clamping block 13 can be engaged with the first triangular clamping block 10 to achieve installation and removal of the protective cover 9 .

[0030] A pressing plate 15 is installed on one side of the mounting plate 12 outside the third mounting seat 7, so as to facilitate the movement of the second triangular clamping block 13 by pressing.

[0031] Among them, the limiting mechanism includes a pair of L-shaped mounting seats 16, and the pair of L-shaped mounting seats 16 are symmetrically installed at the bottom ends of both sides of the first mounting seat 3. The L-shaped mounting seat 16 is provided with a fifth slide groove 17 on the side close to the second mounting seat 5, and a limiting block 18 is slidably installed on one side of the fifth slide groove 17, and a second spring 19 is installed on the other side of the fifth slide groove 17, and the other end of the second spring 19 is connected to the limiting block 18, and a pulling block 20 is installed on one side of the limiting block 18. When using the micrometer for measurement, after removing the protective cover 9, slide the second mounting seat 5 upward to expose the measuring head 2 to the outside. When the second mounting seat 5 slides into the first mounting seat 3, the limiting block 18 is no longer affected by the limiting effect of the second mounting seat 5. Under the pushing effect of the second spring 19 returning to the original position, it abuts against one side of the third mounting seat 7, thereby limiting the second mounting seat 5 in the first mounting seat 3 to prevent the second mounting seat 5 from sliding out during measurement and affecting the measurement.

[0032] A clamping block 21 is installed on the periphery of the first mounting seat 3 , and an anti-skid pad is installed on the periphery of the clamping block 21 , so as to facilitate clamping the dial gauge body 1 with a fixture during measurement and prevent damage caused by slipping.

[0033] An anti-collision sponge pad 22 is installed around the dial of the dial gauge body 1 to reduce damage to the dial gauge body 1 caused by collision.

[0034] The working principle of this embodiment: when it is necessary to use the micrometer for measurement, the pressing block is pressed to drive the second triangular block 13 to move relatively through the mounting plate 12, so that the second triangular block 13 is no longer engaged with the first triangular block 10. At this time, the protective cover 9 can be removed by pulling the protective cover 9 downward. After removing the protective cover 9, slide the second mounting seat 5 upward to expose the measuring head 2 to the outside. When the second mounting seat 5 slides into the first mounting seat 3, the limit block 18 is no longer limited by the second mounting seat 5. Under the pushing action of the second spring 19 returning to the original position, it abuts against one side of the third mounting seat 7, thereby limiting the second mounting seat 5 in the first mounting seat 3 to prevent the second mounting seat 5 from slipping out during measurement and affecting the measurement. At this time, the staff can use the clamp to clamp the micrometer body 1 and adjust The position is realized to measure and locate the casting. After the use is completed and the dial gauge body 1 is removed, the pulling block 20 is pulled to drive a pair of limit blocks 18 to move back to each other, so that the limit blocks 18 no longer have a limiting effect on the second mounting seat 5. At this time, pulling the third mounting seat 7 downward can drive the second mounting seat 5 to slide out of the first mounting seat 3. At this time, align the protective cover 9 with the bottom end of the third mounting seat 7. Since the inclined surface of the first triangular block 10 is in contact with the inclined surface of the second triangular block 13, pushing the protective cover 9 can drive a pair of second triangular blocks 13 to move to the opposite side. When the first triangular block 10 moves to the position above the second triangular block 13, the second triangular block 13 is engaged with the first triangular block 10 under the pulling action of the first spring 14 resetting, so as to fix the protective cover 9.

[0035] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A positioning device for preventing workpiece from jumping during fine machining of pig iron castings, comprising a dial gauge body (1), characterized in that: The bottom end of the dial gauge body (1) is threadedly connected with a measuring head (2); the bottom end of the dial gauge body (1) is installed with a first mounting seat (3); the bottom end of the first mounting seat (3) is provided with a first slide groove (4); a second mounting seat (5) is slidably installed in the first slide groove (4); a second slide groove (6) is penetrated through the top end of the second mounting seat (5); a third mounting seat (7) is slidably installed in the second slide groove (6); a third slide groove (8) is penetrated through the top end of the third mounting seat (7); locking mechanisms are installed at the bottom ends of both sides of the third slide groove (8); a protective cover (9) is installed at the bottom end of the third mounting seat (7); a pair of first triangular blocks (10) are symmetrically installed on both sides of the top end of the protective cover (9) located inside the protective cover (9); and limiting mechanisms are installed at the bottom ends of both sides of the first mounting seat (3).

2. The positioning device for preventing workpiece from jumping during fine machining of pig iron castings as claimed in claim 1, characterized in that: The locking mechanism comprises a pair of fourth slide grooves (11), the pair of fourth slide grooves (11) are symmetrically arranged on both sides of the third mounting seat (7), and the fourth slide grooves (11) are connected with the third slide groove (8), a mounting plate (12) is slidably mounted in the fourth slide groove (11), and two ends of the mounting plate (12) are respectively located on both sides of the fourth slide groove (11), a second triangular clamping block (13) is installed at the bottom end of one side of the mounting plate (12) located in the third slide groove (8), a plurality of first springs (14) are installed on one side of the second triangular clamping block (13), and the other end of the first spring (14) is connected to one side of the third slide groove (8).

3. The positioning device for preventing workpiece from jumping during fine machining of pig iron castings as claimed in claim 2, characterized in that: The size of the second triangular clamping block (13) matches the size of the first triangular clamping block (10).

4. The positioning device for preventing workpiece from jumping during fine machining of pig iron castings as claimed in claim 2, characterized in that: The mounting plate (12) is provided with a pressing plate (15) on one side located outside the third mounting seat (7).

5. The positioning device for preventing workpiece from jumping during fine machining of pig iron castings as claimed in claim 1, characterized in that: The limiting mechanism comprises a pair of L-shaped mounting seats (16), the pair of L-shaped mounting seats (16) are symmetrically mounted at the bottom ends of both sides of the first mounting seat (3), the L-shaped mounting seat (16) is provided with a fifth sliding groove (17) on a side close to the second mounting seat (5), a limiting block (18) is slidably mounted on one side of the fifth sliding groove (17), a second spring (19) is mounted on the other side of the fifth sliding groove (17), and the other end of the second spring (19) is connected to the limiting block (18), and a pulling block (20) is mounted on one side of the limiting block (18).

6. The positioning device for preventing workpiece from jumping during fine machining of pig iron castings as claimed in claim 1, characterized in that: A clamping block (21) is installed on the peripheral side of the first mounting seat (3), and an anti-slip pad is installed on the peripheral side of the clamping block (21).

7. The positioning device for preventing workpiece from jumping during fine machining of pig iron castings as claimed in claim 1, characterized in that: An anti-collision sponge pad (22) is installed around the dial of the dial gauge body (1).

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