Height detection device for inner annular step of product cylinder

Abstract

The utility model discloses a height detection device for an inner annular step of a product cylinder. The height detection device comprises a positioning sleeve, a bearing, a lower turntable, an upper turntable and a dial indicator, the positioning sleeve is provided with a sleeve middle hole, an annular groove is formed in the hole wall of the upper end of the sleeve middle hole, the lower end of the sleeve middle hole is used for being arranged on a product barrel in a sleeving mode, and a positioning mechanism used for fixing the product barrel is arranged at the lower end of the positioning sleeve. The bearing is installed in the annular groove of the positioning sleeve, the lower rotating disc is installed in the bearing and provided with a vertical first through hole, the upper rotating disc is installed on the lower rotating disc, and the upper rotating disc is provided with a vertical second through hole; the dial indicator is installed on the upper rotating disc and provided with a testing rod extending downwards, the testing rod movably penetrates through the second through hole and the first through hole in sequence from top to bottom, and the lower end of the testing rod can abut against the inner annular step of the product cylinder. According to the utility model, multi-point height detection can be carried out around the annular upper side surface of the inner annular step of the product cylinder, the detection range is wide, and the detection precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection tools, in particular to a height inspection device for an inner annular step of a product cylinder. Background Art

[0002] Some parts products have a cylinder, and the inner wall of the cylinder has an inner annular step. After the inner annular step is processed and formed, its height needs to be detected to check whether the error between its surface height and the standard height is within the allowable range, so as to ensure the quality of the processed parts products.

[0003] In the prior art, the height detection device of the inner annular step of the product cylinder usually includes a positioning mechanism and a dial indicator installed on the positioning mechanism. During detection, the positioning mechanism is fixedly installed on the upper end of the product cylinder, and then the test rod of the dial indicator is placed on the inner annular step of the product cylinder. The value of the dial indicator is then read to determine whether the error between the surface height and the standard height is within the allowable range.

[0004] However, the height detection device and detection method in the prior art can only perform height detection on a certain point above the inner annular step of the product cylinder, but cannot perform multi-point height detection around the annular upper side surface of the inner annular step of the product cylinder, which can easily lead to detection errors. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a height detection device for the inner annular step of a product cylinder in view of the deficiencies of the above-mentioned prior art. The height detection device can perform multi-point height detection around the annular upper side surface of the inner annular step of the product cylinder, with a wide detection area and high detection accuracy.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a height detection device for the inner annular step of a product cylinder, comprising a positioning sleeve, a bearing, a lower turntable, an upper turntable and a dial indicator; the positioning sleeve is provided with a sleeve center hole, the upper end hole wall of the sleeve center hole is provided with an annular groove, the lower end of the sleeve center hole is used to be sleeved on the product cylinder, and the lower end of the positioning sleeve is provided with a positioning mechanism for fixing the product cylinder; the bearing is installed in the annular groove of the positioning sleeve, the lower turntable is installed in the bearing, the lower turntable is provided with a vertical first through hole, the upper turntable is installed on the lower turntable, and the upper turntable is provided with a vertical second through hole; the dial indicator is installed on the upper turntable, and the dial indicator is provided with a test rod extending downward, the test rod moves from top to bottom in sequence through the second through hole and the first through hole, and the lower end of the test rod can be against the inner annular step of the product cylinder.

[0007] Preferably, the upper turntable and the lower turntable are respectively provided with a plurality of screw holes, and screws are provided in the screw holes for locking the upper turntable and the lower turntable.

[0008] Preferably, a handle for driving the upper turntable to rotate is laterally connected to one side of the upper turntable.

[0009] Preferably, the positioning mechanism of the positioning sleeve includes two relatively positioned clamping blocks, which are used to clamp the outer side of the upper end of the product cylinder; a push rod is connected to the outer side of the positioning sleeve, which is used to push the positioning sleeve to rotate at an angle so that the clamping blocks clamp the product cylinder.

[0010] Preferably, the test rod of the dial indicator includes a fixed rod and a movable rod, the upper end of the fixed rod is fixedly connected to the dial indicator, the lower end of the fixed rod is movably inserted into the second through hole of the upper turntable, a fixed rod middle hole is provided inside the fixed rod, and the upper end of the movable rod movably passes through the fixed rod middle hole; the upper turntable is provided with a transverse tensioning bolt, the inner end of the tensioning bolt extends into the second through hole of the upper turntable, and is used to clamp or loosen the side of the fixed rod.

[0011] Preferably, a dial indicator reference position elevation block is provided on the upper turntable, the lower end of the dial indicator is placed on the dial indicator reference position elevation block, and the dial indicator reference position elevation block is provided with a hole in the elevation block for the fixing rod of the test rod to movably pass through.

[0012] Preferably, the dial indicator, the test rod, the first through hole, the second through hole, the tension bolt and the dial indicator reference position pad are respectively provided in pairs.

[0013] The beneficial effects of the utility model are as follows: the utility model has an annular groove on the upper hole wall of the sleeve center hole, the lower turntable is installed in the bearing, the lower end of the sleeve center hole is used to be sleeved on the product cylinder, the lower end of the positioning sleeve is provided with a positioning mechanism for fixing the product cylinder, the lower turntable is provided with a vertical first through hole, the upper turntable is installed on the lower turntable, the upper turntable is provided with a vertical second through hole, the dial indicator is installed on the upper turntable, the dial indicator is provided with a test rod extending downward, the test rod moves from top to bottom in sequence through the second through hole and the first through hole, and the lower end of the test rod can be against the inner annular ring of the product cylinder. Therefore, when the utility model detects the height of the inner annular step of the product cylinder, the lower end of the positioning sleeve can be fixed on the product cylinder, the dial indicator can be fixed on the upper turntable, and then the dial indicator test rod can be placed on the inner annular step of the product cylinder, and the value of the dial indicator can be read to determine whether the error between the surface height and the standard height is within the permitted range; when it is necessary to perform height detection on multiple points on the inner annular step of the product cylinder along the circumferential direction, it is only necessary to rotate the upper turntable and the lower turntable to perform height detection on multiple points on the inner annular step of the product cylinder. It can be seen that the utility model can perform multi-point height detection on the annular upper side surface of the inner annular step of the product cylinder, with a wide detection area and high detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is one of the schematic diagrams of the dispersed structure of the utility model.

[0016] Figure 3 This is the second schematic diagram of the dispersed structure of the utility model. DETAILED DESCRIPTION

[0017] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1-Figure 3 As shown, a component product 100 has a product cylinder 101 on it, and an inner annular step 102 is provided inside the product cylinder 101. The utility model is a height detection device for the inner annular step of the product cylinder, including a positioning sleeve 1, a bearing 2, a lower turntable 3, an upper turntable 4 and a dial indicator 5; the positioning sleeve 1 is provided with a sleeve middle hole 11, and the upper end hole wall of the sleeve middle hole 11 is provided with an annular groove 12, the lower end of the sleeve middle hole 11 is used to be sleeved on the product cylinder 101, and the lower end of the positioning sleeve 1 is provided with a positioning mechanism for fixing the product cylinder 101 Structure 12; the bearing 2 is installed in the annular groove 12 of the positioning sleeve 1, the lower turntable 3 is installed in the bearing 2, the lower turntable 3 is provided with a vertical first through hole 31, the upper turntable 4 is installed on the lower turntable 3, and the upper turntable 4 is provided with a vertical second through hole 41; the dial indicator 5 is installed on the upper turntable 4, the dial indicator 5 is provided with a test rod 51 extending downward, the test rod 51 moves from top to bottom in sequence through the second through hole 41 and the first through hole 31, and the lower end of the test rod 51 can be against the inner annular step 102 of the product cylinder 101. When the utility model detects the height of the inner annular step 102 of the product cylinder, the lower end of the positioning sleeve 1 can be fixed on the product cylinder 101, the dial indicator 5 can be fixed on the upper turntable 4, and then the test rod 51 of the dial indicator 5 is placed on the inner annular step 102 of the product cylinder 101, and the value of the dial indicator 5 is read to determine whether the error between the surface height and the standard height is within the permitted range; when it is necessary to perform height detection on multiple points on the inner annular step 102 of the product cylinder 101 along the circumferential direction, it is only necessary to rotate the upper turntable 4 and the lower turntable 3 to perform height detection on multiple points on the inner annular step 102 of the product cylinder 101. It can be seen that the utility model can perform multi-point height detection on the annular upper side surface of the inner annular step 102 of the product cylinder 101, with a wide detection area and high detection accuracy.

[0019] like Figure 1-Figure 3As shown, the upper turntable 4 and the lower turntable 3 are respectively provided with a plurality of screw holes 32, 42, and screws (not shown) are provided in the screw holes 32, 42 for locking the upper turntable 4 and the lower turntable 3. During assembly, the bearing 2 is first installed in the annular groove 12 of the positioning sleeve 1, and then the lower turntable 3 is placed in the bearing 2, and the upper side of the lower turntable 3 is equal to or arranged at the upper side of the bearing 2; then the upper turntable 4 is aligned with the lower turntable 3 and placed on the upper side of the lower turntable 3; finally, the upper turntable 4 and the lower turntable 3 are fixed by screws. A handle 8 for pushing the upper turntable to rotate is laterally connected to one side of the upper turntable 4, so that it is convenient for people to push the upper turntable 4 to rotate.

[0020] like Figure 1-Figure 3 As shown, the positioning mechanism 12 of the positioning sleeve 1 includes two oppositely positioned blocks, which are used to clamp the upper outer side of the product cylinder 101; the outer side of the positioning sleeve 1 is connected with a push rod 14, which is used to push the positioning sleeve 1 to rotate an angle so that the blocks clamp the product cylinder 101. The upper outer side of the product cylinder 101 has two buckles, and the blocks can be just clamped into the lower side of the buckles to fix the product cylinder 101.

[0021] like Figure 1-Figure 3 As shown, the test rod 51 of the dial gauge 5 includes a fixed rod 511 and a movable rod 512. The upper end of the fixed rod 511 is fixedly connected to the dial gauge 5, and the lower end of the fixed rod 511 is movably inserted into the second through hole 41 of the upper turntable 4. The fixed rod 511 is provided with a fixed rod middle hole, and the upper end of the movable rod 512 is movably inserted into the fixed rod middle hole. The upper turntable 4 is provided with a transverse tension bolt 6, and the inner end of the tension bolt 6 extends into the second through hole 41 of the upper turntable 4, which is used to clamp or loosen the side of the fixed rod 511. By loosening the tension bolt 6, the test rod 51 of the dial gauge 5 can be easily taken out of the second through hole 41, and by tightening the tension bolt 6, the test rod 51 of the dial gauge 5 can be positioned in the second through hole 41 by the tension bolt 6, so that the dial gauge 5 can be detachably connected.

[0022] like Figure 1-Figure 3 As shown, a dial gauge reference position pad 7 is provided on the upper turntable 4, the lower end of the dial gauge 5 is placed on the dial gauge reference position pad 7, and the dial gauge reference position pad 7 is provided with a pad middle hole 71 for the fixed rod 511 of the test rod 51 to movably pass through. After the dial gauge reference position pad 7 is provided, the dial gauge can maintain the reference position before testing.

[0023] like Figure 1-Figure 3As shown, the dial gauge 5, the test rod 51, the first through hole 31, the second through hole 41, the tension bolt 6 and the dial gauge reference position pad 7 are respectively arranged in parallel. Since the utility model is provided with two sets of dial gauges 5, two sets of height test data can be read out, so as to more accurately judge whether the inner annular step height of the product cylinder is qualified through the two sets of height test data.

[0024] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A height detection device for the inner annular step of a product cylinder, characterized in that: The invention comprises a positioning sleeve (1), a bearing (2), a lower rotating disk (3), an upper rotating disk (4) and a dial indicator (5); the positioning sleeve (1) is provided with a sleeve center hole (11), the upper end hole wall of the sleeve center hole (11) is provided with an annular groove (12), the lower end of the sleeve center hole (11) is used to be sleeved on the product cylinder, and the lower end of the positioning sleeve (1) is provided with a positioning mechanism (13) for fixing the product cylinder; the bearing (2) is installed in the annular groove (12) of the positioning sleeve (1), and the lower rotating disk (3) is installed on the sleeve center hole (11). Inside the bearing (2), the lower turntable (3) is provided with a vertical first through hole (31); the upper turntable (4) is mounted on the lower turntable (3); the upper turntable (4) is provided with a vertical second through hole (41); the dial gauge (5) is mounted on the upper turntable (4); the dial gauge (5) is provided with a test rod (51) extending downward; the test rod (51) moves from top to bottom and passes through the second through hole (41) and the first through hole (31) in sequence; the lower end of the test rod (51) can abut against the inner annular step of the product cylinder.

2. The height detection device for the inner annular step of the product cylinder according to claim 1 is characterized in that: The upper turntable (4) and the lower turntable (3) are respectively provided with a plurality of screw holes, and screws are provided in the screw holes for locking the upper turntable (4) and the lower turntable (3).

3. The height detection device for the inner annular step of the product cylinder according to claim 1 is characterized in that: A handle (8) for driving the upper turntable (4) to rotate is laterally connected to one side of the upper turntable (4).

4. The height detection device for the inner annular step of the product cylinder according to claim 1 is characterized in that: The positioning mechanism (13) of the positioning sleeve (1) comprises two clamping blocks located opposite to each other, the clamping blocks being used to clamp the outer side of the upper end of the product cylinder; a push rod is connected to the outer side of the positioning sleeve (1) and is used to push the positioning sleeve (1) to rotate at an angle so that the clamping blocks clamp the product cylinder.

5. The height detection device for the inner annular step of the product cylinder according to claim 1 is characterized in that: The test rod (51) of the dial gauge (5) comprises a fixed rod (511) and a movable rod (512), the upper end of the fixed rod (511) being fixedly connected to the dial gauge (5), the lower end of the fixed rod (511) being movably inserted into the second through hole (41) of the upper turntable (4), the fixed rod (511) being provided with a fixed rod middle hole, the upper end of the movable rod (512) being movably inserted into the fixed rod middle hole; the upper turntable (4) is provided with a transverse tensioning bolt (6), the inner end of the tensioning bolt (6) extending into the second through hole (41) of the upper turntable (4) for clamping or loosening the side of the fixed rod (511).

6. The height detection device for the inner annular step of the product cylinder according to claim 5, characterized in that: A dial gauge reference position pad (7) is provided on the upper rotating disk (4), the lower end of the dial gauge (5) is placed on the dial gauge reference position pad (7), and the dial gauge reference position pad (7) is provided with a pad middle hole (71) for a fixing rod of the test rod (51) to movably pass through.

7. The height detection device for the inner annular step of the product cylinder according to claim 6, characterized in that: The dial gauge (5), the test rod (51), the first through hole (31), the second through hole (41), the tightening bolt (6) and the dial gauge reference position padding block (7) are respectively provided in pairs.

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