A device for locating the center of a circular block

Abstract

The present invention provides a device for locating the center of a round block, comprising: a positioning ruler, a V-shaped positioning rod and a sliding sleeve, wherein a first sliding groove is coaxially arranged on the positioning ruler, a positioning hole is arranged at the exact center of the positioning ruler, and scales are arranged on the side wall of the positioning ruler, with the center of the positioning hole as the zero scale and extending to both ends, there are two V-shaped positioning rods, the angle between the V-shaped positioning rods is a right angle, the top of the V-shaped positioning rods is a mounting portion, the two V-shaped positioning rods are both slidably arranged above the first sliding groove through a guide assembly arranged on the mounting portion, the angle between the two ends of the two V-shaped positioning rods and the first sliding groove is an even angle, the two V-shaped positioning rods are arranged facing each other, the two V-shaped positioning rods are not in the same plane, the two V-shaped positioning rods form a clamping groove for clamping the round block, and the two ends of the two V-shaped positioning rods are slidably connected by the sliding sleeve, thereby solving the problem that the existing center positioning tool is inconvenient to accurately find the center of the round block.

Description

Technical Field

[0001] The invention relates to the technical field of circle center positioning tools, and in particular to a device for positioning the center of a circle block. Background Art

[0002] The usual methods for determining the center of a circular block include the scribing method, the center stand, the center finding gauge, etc. These methods are inconvenient to use. Some methods require the use of multiple tools or multiple measurements to determine the center, the time required for determination is long, and errors are prone to occur. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a device for locating the center of a round block, which solves the problem in the prior art that the existing tools for locating the center of the round block are not convenient for accurately finding the center of the round block.

[0004] According to an embodiment of the present invention, a device for locating the center of a round block comprises: a positioning ruler, a V-shaped positioning rod and a sliding sleeve, a first sliding groove is coaxially arranged on the positioning ruler, a positioning hole is arranged at the exact center of the positioning ruler, and a scale is arranged on the side wall of the positioning ruler with the center of the positioning hole as the zero scale and extending to both ends, there are two V-shaped positioning rods, the angle between the V-shaped positioning rods is a right angle, the top of the V-shaped positioning rod is a mounting portion, the two V-shaped positioning rods are slidably arranged above the first sliding groove through a guide assembly arranged on the mounting portion, the angle between the two ends of the two V-shaped positioning rods and the first sliding groove is an even angle of °, the two V-shaped positioning rods are arranged facing each other, the two V-shaped positioning rods are not in the same plane, the two V-shaped positioning rods form a clamping groove for clamping the round block, and the two ends of the two V-shaped positioning rods are slidably connected by a sliding sleeve.

[0005] Compared with the prior art, the present invention has the following beneficial effects: by arranging two right-angled V-shaped positioning rods above the first slide groove, the two V-shaped positioning rods cross and overlap each other, thereby forming a square clamping groove, and at the same time, the two ends of the intersection of the two V-shaped positioning rods are slidably connected by a sliding sleeve, so that the size of the clamping groove can be reasonably pre-adjusted according to the size of the round block whose center is to be found, the round block is placed in the clamping groove, and then the clamping groove is adjusted to be tightened, so that the round block is tangent to the edge line of the clamping groove, and then the two V-shaped positioning rods are kept relatively still. Then push the two V-shaped positioning rods to move relative to the first sliding groove. When the round block coincides with the positioning hole, take the top and bottom of the round block as reference points, read the scale on the side wall of the positioning ruler. When the two scales read are the same, stop moving the V-shaped positioning rod, use a marking pen of the same size as the positioning hole to pass through the positioning hole to mark a point on the round block, that is, the marked point is the center of the round block. The device can quickly find the center of the round block, improve work efficiency, and reduce errors in finding the center of the circle. At the same time, the device is small and easy to carry, and the production cost is also low.

[0006] Furthermore, each of the guide assemblies comprises: a guide rod and a mounting rod, one end of the guide rod being fixedly arranged on the side wall of the mounting portion close to the positioning ruler, the other end of the guide rod passing through the first slide slot, the guide rod being slidably connected to the first slide slot, there being two mounting rods, the two mounting rods being detachably arranged on the two side walls of the end of the guide rod passing through the first slide slot by bolts, each mounting rod being rotatably provided with a guide wheel on the side wall close to the positioning ruler through a mounting frame, and each guide wheel being rollingly connected to the side wall of the positioning ruler.

[0007] Furthermore, it also includes a limit assembly, there are two limit assemblies, the two limit assemblies are respectively arranged at the two ends of the positioning ruler, and the two limit assemblies are used to prevent the guide rod from being separated from the first sliding groove.

[0008] Furthermore, each of the limit assembly comprises: a limit block and a mounting plate, the mounting plate is fixed to the end of the positioning ruler by bolts, the limit block is fixed to the side wall of the mounting plate close to the first slide slot, and the limit block is inserted into the first slide slot.

[0009] Preferably, a buffer pad is provided at one end of each limiting block away from the mounting plate.

[0010] Furthermore, the two sliding sleeves include: a mounting block, a clamping plate and a screw rod. The two mounting blocks are slidably arranged on the two ends of the same V-shaped positioning rod. A second sliding groove is arranged on both ends of each V-shaped positioning rod. Each mounting block is provided with a locking mechanism for cooperating with the second sliding grooves on the two ends intersecting the two V-shaped positioning rods to lock the two ends of the two V-shaped positioning rods. A clamping plate tightly attached to the side wall of the V-shaped positioning rod is arranged on the side wall of each mounting block. The screw rod horizontally passes through the clamping plate and is tightly pressed against the side wall of the V-shaped positioning rod. The screw rod is threadedly connected to the clamping plate.

[0011] Furthermore, each of the locking mechanisms includes: a connecting rod and a spring, the connecting rod vertically passes through the mounting block and is inserted into the second slide groove, a pull handle is fixedly provided on the top of the connecting rod, and the spring is provided between the pull handle and the mounting block. Under the elastic force of the spring, the connecting rod is inserted into the second slide groove of another V-shaped positioning rod adjacent to it. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0013] Figure 2 Schematic diagram of the structure of the guide component.

[0014] Figure 3 It is a schematic diagram of the structure of the limit component.

[0015] Figure 4 Schematic diagram of the installation structure of the V-shaped positioning rod.

[0016] Figure 5 It is a structural schematic diagram of the sleeve.

[0017] Figure 6 This is a schematic diagram of the structure after the round block is placed in the clamping groove.

[0018] In the above drawings: 1. positioning ruler; 2. first slide groove; 3. positioning hole; 4. V-shaped positioning rod; 5. sliding sleeve; 6. guide rod; 7. mounting rod; 8. mounting frame; 9. guide wheel; 10. mounting plate; 11. limit block; 12. buffer pad; 13. second slide groove; 401. mounting part; 501. mounting block; 502. clamping plate; 503. screw; 504. pull handle; 505. spring; 506. connecting rod. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, an embodiment of the present invention proposes a device for locating the center of a round block, comprising: a positioning ruler 1, a V-shaped positioning rod 4 and a sliding sleeve 5. A first slide groove 2 is coaxially arranged on the positioning ruler 1, a positioning hole 3 is arranged at the exact center of the positioning ruler 1, and scales are arranged on the side wall of the positioning ruler 1 with the center of the positioning hole 3 as the zero scale and extending to both ends. There are two V-shaped positioning rods 4, the angle between the V-shaped positioning rods 4 is a right angle, and the top of the V-shaped positioning rod 4 is a mounting portion 401. The two V-shaped positioning rods 4 are slidably arranged above the first slide groove 2 through a guide assembly arranged on the mounting portion 401. The angle between the two ends of the two V-shaped positioning rods 4 and the first slide groove 2 is an even angle of °. The two V-shaped positioning rods 4 are arranged opposite to each other, and the two V-shaped positioning rods 4 are not in the same plane. The two V-shaped positioning rods 4 form a clamping groove for clamping the round block, and the two ends of the two V-shaped positioning rods 4 are slidably connected by the sliding sleeve 5.

[0021] By arranging two right-angled V-shaped positioning rods 4 above the first slide groove 2, the two V-shaped positioning rods 4 cross and overlap each other to form a square clamping groove, and at the same time, the two ends of the intersection of the two V-shaped positioning rods 4 are slidably connected by the sliding sleeve 5, so that the size of the clamping groove can be reasonably pre-adjusted according to the size of the circle to be found. Figure 6As shown, put the round block into the clamping groove, and then adjust the clamping groove to tighten so that the round block and the edge line of the clamping groove are tangent, then keep the two V-shaped positioning rods 4 relatively still, and then push the two V-shaped positioning rods 4 to move relative to the first slide groove 2. When the round block coincides with the positioning hole 3, take the top and bottom of the round block as reference points, read the scale on the side wall of the positioning ruler 1, when the two scales read are the same, stop moving the V-shaped positioning rod 4, use a marking pen of the same size as the positioning hole 3 to pass through the positioning hole 3 to mark a point on the round block, that is, the marked point is the center of the round block. The device can quickly find the center of the round block, improve work efficiency, and reduce the error in finding the center of the circle. At the same time, the device is small and easy to carry, and the production cost is also low.

[0022] like Figure 2 As shown, each of the guide assemblies comprises: a guide rod 6 and a mounting rod 7, one end of the guide rod 6 is fixedly arranged on the side wall of the mounting portion 401 close to the positioning ruler 1, the other end of the guide rod 6 passes through the first slide groove 2, the guide rod 6 is slidably connected to the first slide groove 2, there are two mounting rods 7, the two mounting rods 7 are detachably arranged on the two side walls of the end of the guide rod 6 passing through the first slide groove 2 by bolts, each mounting rod 7 is rotatably provided with a guide wheel 9 close to the side wall of the positioning ruler 1 through a mounting frame 8, and each guide wheel 9 is rollingly connected to the side wall of the positioning ruler 1.

[0023] Specifically, by arranging a guide wheel 9 on the mounting frame 8, it can guide the guide rod 6 when it moves in the first slide groove 2. At the same time, the mounting rod 7 is detachably connected to the guide rod 6 by bolts, which facilitates the removal of the V-shaped positioning rod 4 from the positioning ruler 1 for maintenance or replacement.

[0024] Preferably, Figure 3 As shown, it also includes two limit assemblies, which are respectively arranged at the two ends of the positioning ruler 1, and the two limit assemblies are used to prevent the guide rod 6 from being separated from the first slide groove 2. Each of the limit assemblies includes: a limit block 11 and a mounting plate 10, the mounting plate 10 is fixed to the end of the positioning ruler 1 by bolts, the limit block 11 is fixed to the side wall of the mounting plate 10 close to the first slide groove 2, and the limit block 11 is inserted into the first slide groove 2.

[0025] Furthermore, in order to prevent the mounting portion 401 of the V-shaped positioning rod 4 from being damaged, a buffer pad 12 is provided at one end of each limiting block 11 away from the mounting plate 10 .

[0026] Further, such as Figure 4 as well as Figure 5As shown, the two sliding sleeves 5 each include: a mounting block 501, a clamping plate 502 and a screw 503. The two mounting blocks 501 are slidably arranged on the two ends of the same V-shaped positioning rod 4. A second sliding groove 13 is arranged on both ends of each V-shaped positioning rod 4. Each mounting block 501 is provided with a locking mechanism for cooperating with the second sliding groove 13 on the two ends intersecting the two V-shaped positioning rods 4 to lock the two ends of the two V-shaped positioning rods 4. A clamping plate 502 tightly attached to the side wall of the V-shaped positioning rod 4 is arranged on the side wall of each mounting block 501. The screw 503 horizontally passes through the clamping plate 502 and is pressed against the side wall of the V-shaped positioning rod 4. The screw 503 is threadedly connected with the clamping plate 502. Each of the locking mechanisms includes: a connecting rod 506 and a spring 505. The connecting rod 506 vertically passes through the mounting block 501 and is inserted into the second slide groove 13. A pull handle 504 is fixedly provided on the top of the connecting rod 506. The spring 505 is provided between the pull handle 504 and the mounting block 501. Under the elastic force of the spring 505, the connecting rod 506 is inserted into the second slide groove 13 of another adjacent V-shaped positioning rod 4.

[0027] Specifically, when it is necessary to adjust the two V-shaped positioning rods 4 to move away from or closer to each other to adjust the clamping groove to become larger or smaller, first pull the handle 504 to pull the connecting rod 506 out of the second slide groove 13, and then twist the screw 503 so that the screw 503 is no longer tightly attached to the side wall of the V-shaped positioning rod 4, and finally, the two V-shaped positioning rods 4 can be pushed to slide relative to the first slide groove 2.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A device for locating the center of a circular block, characterized in that: include: A positioning ruler (1), a V-shaped positioning rod (4) and a sliding sleeve (5), wherein a first sliding groove (2) is coaxially arranged on the positioning ruler (1), a positioning hole (3) is arranged at the exact center of the positioning ruler (1), and a scale extending from the center of the positioning hole (3) as the zero scale and extending to both ends is arranged on the side wall of the positioning ruler (1), the V-shaped positioning rods (4) are two, the angle between the V-shaped positioning rods (4) is a right angle, the top of the V-shaped positioning rods (4) is a mounting portion (401), and the two The V-shaped positioning rods (4) are slidably arranged above the first slide groove (2) through a guide assembly arranged on the mounting portion (401); the angles between the two ends of the two V-shaped positioning rods (4) and the first slide groove (2) are both 45°; the two V-shaped positioning rods (4) are arranged facing each other, the two V-shaped positioning rods (4) are not in the same plane, the two V-shaped positioning rods (4) form a clamping groove for clamping the round block, and the two ends of the two V-shaped positioning rods (4) are slidably connected through a sliding sleeve (5); Each of the guide assemblies comprises: a guide rod (6) and a mounting rod (7), one end of the guide rod (6) is fixedly arranged on the side wall of the mounting portion (401) close to the positioning ruler (1), the other end of the guide rod (6) passes through the first slide groove (2), the guide rod (6) is slidably connected to the first slide groove (2), there are two mounting rods (7), the two mounting rods (7) are detachably arranged on the two side walls of the end of the guide rod (6) passing through the first slide groove (2) by bolts, each mounting rod (7) is rotatably provided with a guide wheel (9) on the side wall close to the positioning ruler (1) through a mounting frame (8), and each guide wheel (9) is rollingly connected to the side wall of the positioning ruler (1).

2. A device for locating the center of a circular block as claimed in claim 1, characterized in that: It also includes two limit assemblies, which are respectively arranged at the two ends of the positioning ruler (1), and are used to prevent the guide rod (6) from being separated from the first sliding groove (2).

3. A device for locating the center of a circular block as claimed in claim 2, characterized in that: Each of the limiter assemblies comprises: a limiter block (11) and a mounting plate (10); the mounting plate (10) is fixed to the end of the positioning ruler (1) by means of bolts; the limiter block (11) is fixed to the side wall of the mounting plate (10) close to the first slide groove (2); and the limiter block (11) is inserted into the first slide groove (2).

4. A device for locating the center of a circular block as claimed in claim 3, characterized in that: A buffer pad (12) is provided at one end of each limiting block (11) facing away from the mounting plate (10).

5. A device for locating the center of a circular block as claimed in any one of claims 1 to 4, characterized in that: The two sliding sleeves (5) each comprise: a mounting block (501), a clamping plate (502) and a screw rod (503); the two mounting blocks (501) are slidably arranged at the two ends of the same V-shaped positioning rod (4); a second sliding groove (13) is arranged at both ends of each V-shaped positioning rod (4); each mounting block (501) is provided with a locking mechanism for cooperating with the second sliding grooves (13) at the two ends intersecting the two V-shaped positioning rods (4) to lock the two ends of the two V-shaped positioning rods (4); a clamping plate (502) tightly attached to the side wall of the V-shaped positioning rod (4) is arranged on the side wall of each mounting block (501); the screw rod (503) horizontally passes through the clamping plate (502) and is tightly attached to the side wall of the V-shaped positioning rod (4); the screw rod (503) is threadedly connected to the clamping plate (502).

6. A device for locating the center of a circular block as claimed in claim 5, characterized in that: Each of the locking mechanisms comprises: a connecting rod (506) and a spring (505), the connecting rod (506) vertically passes through the mounting block (501) and is inserted into the second slide groove (13), a pull handle (504) is fixedly provided on the top of the connecting rod (506), the spring (505) is arranged between the pull handle (504) and the mounting block (501), and under the elastic force of the spring (505), the connecting rod (506) is inserted into the second slide groove (13) of another adjacent V-shaped positioning rod (4).

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