Position adjusting device of broaching machine sample base

Abstract

The utility model discloses a position adjusting device of a broaching machine sample base, which comprises a cross beam, an adjusting bolt and two hooks, the cross beam is placed on a broaching machine platform and is positioned on the side part of the sample base needing to be adjusted, and the two hooks are respectively positioned on two sides of a knife rest in the middle of the broaching machine platform. Hook handles of the two hooks are perpendicular to the cross beam and connected with the two ends of the cross beam respectively, hook heads of the two hooks are hooked to the side wall of one end of the broaching machine platform, the adjusting bolt is screwed into a through bolt hole in the cross beam, and the end of the adjusting bolt abuts against the sample base. According to the utility model, the sample base is driven by the adjusting bolt to move on the broaching machine platform, and the pitch of the adjusting bolt is known, so that the displacement of the sample base can be controlled by controlling the rotation angle of the adjusting bolt, the position of the sample base of the broaching machine can be quickly and accurately adjusted, and the processing efficiency and the processing precision of an impact sample are improved.

Description

Technical Field

[0001] The utility model relates to a position adjusting device for a sample base of a broaching machine, belonging to the technical field of machining. Background Art

[0002] Broaching machines are widely used in the processing and manufacturing of impact samples, and their main function is to machine notches such as V-shaped and arc-shaped in the middle position of the samples. During the processing, with the increase in the number of processed samples, continuous wear of the broach, loosening of the base, etc., can all cause changes in the notch size, thus affecting the data of the impact test. Therefore, after the broaching machine is used for a period of time, the sample base is usually adjusted to correct the notch size so that it is within the specified error range to ensure the processing quality of the impact sample.

[0003] For ordinary broaching machines, the equipment itself does not have a special mechanism to adjust the position of the sample base. The position of the sample base is usually finely adjusted by knocking. However, the magnitude of the knocking force seriously affects the change in the position of the sample base, and it often takes repeated knocking to complete the adjustment, which is not only time-consuming and laborious, but also has a low adjustment accuracy. Therefore, it is necessary to design an adjustment device that can be used on ordinary broaching machines to achieve precise control of the position of the sample base of the broaching machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a position adjusting device for a sample base of a broaching machine aiming at the disadvantages of the prior art, so as to quickly and precisely adjust the position of the sample base of the broaching machine and improve the processing efficiency and processing accuracy of the impact sample.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A position adjusting device for a sample base of a broaching machine includes a cross beam, adjusting bolts and two hooks. The cross beam is placed on the broaching machine platform and is located at the side of the sample base to be adjusted. The two hooks are respectively located on both sides of the tool rest in the middle of the broaching machine platform. The hook handles of the two hooks are perpendicular to the cross beam and are respectively connected to both ends of the cross beam. The hook heads of the two hooks are hooked on the side wall at one end of the broaching machine platform. The adjusting bolts are screwed into the through bolt holes on the cross beam, and the ends of the adjusting bolts abut against the sample base.

[0007] For the above-mentioned position adjusting device for a sample base of a broaching machine, two adjusting bolts are provided, and the ends of the two adjusting bolts respectively abut against both ends of the sample base.

[0008] The position adjustment device of the above broaching machine sample base further includes a magnet, a spring, a rear pull bolt and a disc. The rear pull bolt is installed in the middle bolt hole of the crossbeam. One end of the spring is fixedly connected to the rear pull bolt, and the other end is fixedly connected to the disc. One end of the magnet is fixed on the disc, and the other end is adsorbed on the sample pressing device on the sample base.

[0009] For the position adjustment device of the above broaching machine sample base, the hook handle of the hook is connected to the end of the crossbeam through a telescopic rod, a pin shaft and a movable pin. One end of the telescopic rod is rotatably connected to the end of the crossbeam through the pin shaft, and a square hole is provided on the end surface of the other end. The hook handle of the hook slides into the square hole. A plurality of pin holes are arranged along the length direction of the telescopic rod on the telescopic rod, and positioning holes corresponding to the pin holes are provided on the hook handle of the hook. The movable pin passes through a pin hole on the telescopic rod and then inserts into the positioning hole.

[0010] For the position adjustment device of the above broaching machine sample base, the end of the adjustment bolt opposite to the sample base is provided with a spherical surface.

[0011] For the position adjustment device of the above broaching machine sample base, the pitch of the adjustment bolt is 0.5 mm.

[0012] For the position adjustment device of the above broaching machine sample base, three pin holes are designed on the telescopic rod.

[0013] The sample base of the present utility model is driven to move on the broaching machine platform through the adjustment bolt. Since the pitch of the adjustment bolt is known, the displacement of the sample base can be controlled by controlling the rotation angle of the adjustment bolt, thereby quickly and accurately adjusting the position of the broaching machine sample base and improving the processing efficiency and processing accuracy of the impact sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 the bottom view of

[0017] Figure 3 is a schematic installation structure diagram of the hook and the telescopic rod, where Figure 3 (b) is Figure 3 the upward sectional view of (a);

[0018] Figure 4 is a schematic structural diagram of the crossbeam;

[0019] Figure 5 is a schematic structural diagram of the pin shaft;

[0020] Figure 6 It is a schematic structural diagram of an adjusting bolt.

[0021] The labels in the figure are as follows: 1. Hook, 2. Movable bolt, 3. Telescopic rod, 4. Pin shaft, 5. Cross beam, 6. Adjusting bolt, 7. Magnet, 8. Spring, 9. Rear pull bolt, 10. Disc, 11. Base, 12. Broach, 13. Tool holder, 14. Fixed bolt, 15. Specimen pressing device, 16. Broaching machine platform, 17. Square hole, 18. Arc surface, 19. Round hole, 20. Inclined surface, 21. Pin hole, 22. Pin shaft threaded hole, 23. First bolt hole, 24. Intermediate bolt hole, 25. Second bolt hole, 26. Positioning surface, 27. Spherical surface. Specific implementation mode

[0022] The utility model provides a position adjusting device for a broaching machine specimen base aiming at the problems existing in the prior art, which can not only improve the adjusting efficiency of the specimen base, but also improve the adjusting accuracy of the specimen base.

[0023] Refer to Figure 1 , Figure 2 , Figure 4 The utility model mainly includes a hook 1, a movable bolt 2, a telescopic rod 3, a pin shaft 4, a cross beam 5, an adjusting bolt 6, a magnet 7, a spring 8, a rear pull bolt 9, and a disc 10; among them, the cross beam 5 is the main structural member; the telescopic rods 3 are installed at both ends of the cross beam 5 and fixed on the cross beam 5 through the pin shafts 4; one end of the pin shaft 4 is provided with an external thread, and the pin shaft 4 passes through the round hole 19 of the telescopic rod 3 and is screwed into the pin shaft threaded hole 22 of the cross beam 5; the hook handle of the hook 1 is installed in the square hole 17 inside the telescopic rod 3 and can slide along the square hole 17; the movable bolt 2 is inserted into a pin hole 21 on the telescopic rod 3 and then into a positioning hole on the hook handle of the hook 1 to fix the relative positions of the hook 1 and the telescopic rod 3; the adjusting bolts 6 are installed in the first bolt hole 23 and the second bolt hole 25 of the cross beam 5, that is, an adjusting bolt 6 is arranged on each side of the rear pull bolt 9 and symmetrically installed; the rear pull bolt 9 is installed in the intermediate bolt hole 24 of the cross beam 5; the spring 8 is welded to the threaded end surface of the rear pull bolt 9; the disc 10 is welded to the other end of the spring 8; the magnet 7 is glued to the disc 10.

[0024] According to Figure 3 , 5 As shown, the positioning surface 26 of the pin shaft 4 and the round hole 19 of the telescopic rod 3 are in clearance fit, so that the telescopic rod 3 can make a circular motion around the axis of the pin shaft 4.

[0025] According to Figure 3As shown in the figure, three pin holes 21 are designed on the telescopic rod 3, so that there are three changes in the relative positions of the hook 1 and the telescopic rod 3. The inclination angle of the inclined surface 20 of the hook 1 is 3-5°, and both ends of the inclined surface 20 are designed with arc angle transitions. The main function is to ensure that the hook 1 firmly grasps the broaching machine platform 16.

[0026] In order to improve the displacement adjustment accuracy, the adjustment bolt 6 is selected with a thread pitch of 0.5 mm. That is, when it rotates one week, the bolt advances 0.5 mm, and the fine adjustment of the base 11 can be realized.

[0027] The specific use steps of the present utility model are as follows:

[0028] Pull out the movable pin 2, adjust the relative positions of the hook 1 and the telescopic rod 3 according to the width of the broaching machine platform 16, and insert the movable pin into the pin hole 21 to fix the hook and the telescopic rod 3.

[0029] Place the cross beam 5 on one side of the specimen base 11 to be adjusted, and rotate the hook 1 to hook the broaching machine platform 16.

[0030] Rotate the rear pull bolt 9 to make the magnet 7 attracted to the specimen pressing device 15.

[0031] Rotate the adjustment bolt 6 so that its spherical surface 27 closely adheres to the base 11.

[0032] Loosen the fixing bolt 14 on the base 11 to make the base 11 in an active state, but do not remove the fixing bolt 14.

[0033] According to the error of the tensile specimen, gently rotate the adjustment bolt 6, and the relative displacement of the base 11 and the broach 12 can be finely adjusted until the specimen notch error is within the specified range.

[0034] Tighten the fixing bolt 14 to fix the position of the base 11.

[0035] Loosen the adjustment bolt 6 and the rear pull bolt 9, remove the present utility model, and the adjustment of the base 11 is completed.

[0036] During the whole adjustment process, the spring 8 is in a stretched state. The elastic force of the spring 8 makes the specimen base 11 always closely adhere to the spherical surface 27 of the adjustment bolt 6, ensuring that the displacement of the specimen base 11 is the same as the axial movement of the tight adjustment bolt 6.

[0037] The present utility model uses a fine thread to finely adjust the broaching machine specimen base. Compared with the traditional knocking adjustment method, it can realize the controllable fine adjustment of the specimen base displacement, thereby improving the adjustment efficiency and accuracy of the specimen base. Moreover, the relative positions of the hook and the telescopic rod can be adjusted through the pin holes to realize the adjustment of the specimen bases of different specifications of broaching machines, and the versatility is relatively strong.

[0038] An implementation case of the present utility model is as follows:

[0039] Hook: length 380 mm, width 15 mm, height 25 mm;

[0040] Telescopic rod: length 350 mm, width 20 mm, height 30 mm, inner hole width 15 mm, height 25 mm;

[0041] Pin shaft: diameter 18 mm, thread M16

[0042] Cross beam: length 300 mm, width 30 mm, height 30 mm;

[0043] Adjusting bolt: M8*0.5, length 120 mm;

[0044] Rear pull bolt: M24, length 70 mm;

[0045] Magnet: diameter 30 mm, thickness 20 mm;

[0046] Disc: diameter 30 mm, thickness 5 mm;

[0047] Spring: diameter 30 mm, length 40 mm.

Claims

1. A position adjustment device for a specimen base of a broaching machine, characterized in that: The invention comprises a crossbeam (5), an adjusting bolt (6) and two hooks (1), wherein the crossbeam (5) is placed on a lathe platform (16) and is located on the side of a sample base (11) to be adjusted, and the two hooks (1) are respectively located on both sides of a tool holder (13) in the middle of the lathe platform (16), and the hook handles of the two hooks are perpendicular to the crossbeam (5) and are respectively connected to the two ends of the crossbeam (5), and the hook heads of the two hooks (1) are hooked on the side wall of one end of the lathe platform (16), and the adjusting bolt (6) is screwed into the through bolt hole on the crossbeam (5), and the end of the adjusting bolt (6) is pressed against the sample base (11).

2. The position adjustment device for a specimen base of a broaching machine according to claim 1, characterized in that: Two adjusting bolts (6) are provided, and the ends of the two adjusting bolts (6) are respectively pressed against the two ends of the sample base (11).

3. The position adjustment device for a specimen base of a broaching machine according to claim 2, characterized in that: It also includes a magnet (7), a spring (8), a back-tension bolt (9) and a disc (10), wherein the back-tension bolt (9) is installed in a middle bolt hole (24) of the crossbeam (5), one end of the spring (8) is fixedly connected to the back-tension bolt (9), and the other end is fixedly connected to the disc (10); one end of the magnet (7) is fixed to the disc (10), and the other end is adsorbed on a sample clamping device (15) on a sample base (11).

4. A position adjustment device for a specimen base of a broaching machine according to any one of claims 1 to 3, characterized in that: The hook handle of the hook (1) is connected to the end of the cross beam (5) through the telescopic rod (3), the pin shaft (4) and the movable latch (2); one end of the telescopic rod (3) is rotatably connected to the end of the cross beam (5) through the pin shaft (4); a square hole (17) is provided on the end surface of the other end; the hook handle of the hook (1) is slidably inserted into the square hole (17); a plurality of pin holes (21) arranged along the length direction of the telescopic rod (3) are provided on the telescopic rod (3); a positioning hole corresponding to the pin hole (21) is provided on the hook handle of the hook (1); and the movable latch (2) passes through a pin hole (21) on the telescopic rod (3) and is then inserted into the positioning hole.

5. The position adjustment device for a specimen base of a broaching machine according to claim 4, characterized in that: A spherical surface (27) is provided at the end of the adjusting bolt (6) opposite to the sample base (11).

6. The position adjustment device for a specimen base of a broaching machine according to claim 5, characterized in that: The pitch of the adjusting bolt (6) is 0.5 mm.

7. The position adjustment device for a specimen base of a broaching machine according to claim 6, characterized in that: There are three pin holes (21) on the telescopic rod (3).

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