Precision measuring device for deep and long hole

Abstract

The utility model discloses a deep and long hole precision measuring device in the technical field of measuring devices, which comprises a main plate, the bottom end surface of the main plate is a flat surface, the two sides of the main plate are provided with sliding grooves, and the middle part of the upper end of the main plate is welded with a hollow holding handle. After the two long supporting rods of the device enter the deep and long hole in a combined state, the pulling block is driven to move upwards by rotating the screw rod, the supporting rods on the two sides are driven to be opened by the abutting block, the contact ends at the bottoms of the supporting rods make contact with the inner wall of the deep and long hole, the inner diameter of the deep and long hole is marked, and the inner diameter of the deep and long hole can be obtained by measuring the distance between the bottom ends of the two supporting rods. The bottom flat end of the main plate is in contact with the upper end face of the deep long hole, the bottom end of the main plate is pressed to make contact with the bottom end of the deep long hole, the depth rod is elastically clamped through the rubber cylinder, the depth rod is made to be matched with the graduated scale for depth detection, and the device is suitable for inner diameter and depth detection of the deep long hole.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring devices, in particular to a deep and long hole precision measuring device. Background Art

[0002] Machining refers to the process of changing the size or performance of a workpiece through a mechanical device. In the production process, any process that changes the shape, size, position and properties of the production object to make it a finished product or semi-finished product is called a process. It is the main part of the production process. The mechanical manufacturing process generally refers to the sum of the mechanical processing process of parts and the assembly process of the machine. Other processes are called auxiliary processes. Drilling materials is a common machining operation. After drilling, the depth and diameter of the drilling need to be measured to ensure the accuracy of the drilling process.

[0003] However, the existing ordinary drill holes are measured by vernier calipers, which is not convenient enough to detect the depth and diameter of deep and long holes. The measuring end of the vernier caliper cannot penetrate into the long hole, and the ordinary vernier caliper cannot measure the depth and diameter at the same time, and the use effect is not good. Based on this, the utility model designs a deep and long hole precision measuring device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a deep and long hole precision measuring device to solve the above-mentioned problems that it is not convenient to detect the depth and diameter of the deep and long hole, the measuring end of the vernier caliper cannot penetrate into the long hole, and the ordinary vernier caliper cannot measure the depth and diameter at the same time.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A deep and long hole precision measuring device comprises a main board, the bottom end surface of the main board is a flat surface, sliding grooves are provided on both sides of the main board, a hollow holding handle is welded on the middle part of the upper end of the main board, support rods are movably connected on both sides of the main board, a moving groove is provided on the upper end of the support rod, a T-shaped interference block is installed in the moving groove for limiting position, a shaft is installed through the lateral end of the interference block and both ends of the shaft are clamped in the sliding groove, a pulling block is installed on the main board, and both ends of the shaft penetrated by the interference block are clamped in the bottom end of the pulling block, a screw is rotatably connected to the upper limit position of the main board, and the screw is threadedly connected to the upper end of the pulling block, a rubber tube is rotatably connected to the middle part of the main board, a depth rod is installed inside the rubber tube, and a scale is embedded and connected on one side of the depth rod.

[0007] As a further solution of the utility model: a rubber sleeve is installed on the upper end of the gripping handle, and the rubber sleeve is made of elastic rubber.

[0008] As a further solution of the utility model: the bottom end of the support rod is movably connected with a contact block, and the contact end of the contact block is arc-shaped.

[0009] As a further solution of the utility model: the lateral end of the abutment block is cylindrical, and the length of the lateral end of the abutment block is greater than the width of the support rod.

[0010] As a further solution of the utility model: the cross section of the depth rod is square, and a bottom rod is welded to the bottom end of the depth rod.

[0011] As a further solution of the utility model: the bottom rod and the depth rod are arranged on the same axis, and the bottom end of the bottom rod is conical.

[0012] As a further solution of the utility model: an operating cylinder is welded to the upper end of the depth rod, and the operating cylinder is a hollow cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, after the two longer support rods of the device are combined into the deep and long hole, the pulling block is driven to move upward through the knob screw, so that the resistance block drives the support rods on both sides to open, so that the contact end of the bottom of the support rod is in contact with the inner wall of the deep and long hole, and the inner diameter of the deep and long hole is marked. The inner diameter of the deep and long hole can be obtained by measuring the distance between the bottom ends of the two support rods. A rubber tube is installed in the middle of the main board, and a depth rod is installed inside the rubber tube. The flat end of the bottom of the main board contacts the upper end surface of the deep and long hole. The depth rod is pressed to contact the bottom end of the deep and long hole. The depth rod is elastically clamped by the rubber tube, and the depth rod is cooperated with the scale to perform depth detection. It is suitable for the inner diameter and depth detection of the deep and long hole.

[0015] 2. In the utility model, a contact block is movably connected through the bottom end of the support rod, and the contact end of the contact block is arc-shaped. The contact block movably connected through the bottom end of the support rod is convenient for vertical contact with the inner wall of the deep and long hole to ensure accurate measurement. The arc-shaped contact end of the contact block matches the cylindrical deep and long hole. The bottom rod and the depth rod are arranged on the same axis. The bottom end of the bottom rod is conical. The bottom rod and the depth rod on the same axis ensure accurate depth detection. The conical end of the bottom end of the bottom rod is convenient for centering the center line of the deep and long hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model;

[0019] Figure 4 It is a bottom-up three-dimensional structural schematic diagram of the utility model.

[0020] In the figure: 1. main board; 2. sliding groove; 3. holding handle; 4. rubber sleeve; 5. support rod; 6. contact block; 7. moving groove; 8. resistance block; 9. pulling block; 10. screw rod; 11. rubber cylinder; 12. depth rod; 13. bottom rod; 14. scale; 15. operating cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] Example:

[0023] See also Figure 1-Figure 4In the embodiment of the utility model, a deep and long hole precision measuring device includes a main board 1, the bottom end surface of the main board 1 is a flat surface, sliding grooves 2 are provided on both sides of the main board 1, a hollow gripping handle 3 is welded on the middle part of the upper end of the main board 1, support rods 5 are movably connected on both sides of the main board 1, and a moving groove 7 is provided on the upper end of the support rod 5. A T-shaped interference block 8 is installed in the moving groove 7 for limiting position, and a shaft is installed through the lateral end of the interference block 8 and the two ends of the shaft are clamped in the sliding groove 2, a pulling block 9 is installed on the main board 1, and the interference block The two ends of the shaft passing through 8 are clamped at the bottom of the pulling block 9, the upper limit rotation connection of the main board 1 is connected with a screw rod 10, the screw rod 10 is threadedly connected to the upper end of the pulling block 9, the middle part of the main board 1 is rotatably connected with a rubber tube 11, a depth rod 12 is installed inside the rubber tube 11, and a scale 14 is embedded and connected to one side of the depth rod 12. The support rod 5 is movably connected on both sides of the main board 1, and the movable groove 7 at the upper end of the support rod 5 is used to install the resistance block 8. The lateral end of the resistance block 8 contacts the bottom of the support rod 5, and the bottom end of the pulling block 9 is against the resistance block 8 is connected with the shaft passing through the horizontal end, and the holding handle 3 at the upper end of the main board 1 is convenient for hand holding. After the two longer support rods 5 of the device are combined into the deep and long hole, the pulling block 9 is driven to move upward through the knob screw 10, so that the resistance block 8 drives the support rods 5 on both sides to open, so that the contact end at the bottom of the support rod 5 contacts the inner wall of the deep and long hole, and the inner diameter of the deep and long hole is marked. The distance between the bottom ends of the two support rods 5 can be measured to obtain the inner diameter of the deep and long hole. A rubber tube 11 is installed in the middle of the main board 1, and a depth rod 1 is installed inside the rubber tube 11 2. The flat end of the bottom of the main board 1 contacts the upper end surface of the deep and long hole, and the depth rod 12 is pressed to contact the bottom end of the deep and long hole. The depth rod 12 is elastically clamped by the rubber tube 11, and the depth rod 12 is allowed to cooperate with the scale 14 for depth detection. The rubber tube 11 in the middle of the main board 1 can be rotated to adjust the angle of the depth rod 12 so that the scale 14 faces the user, which is convenient for depth reading. The device can measure the depth and inner diameter of the deep and long hole at the same time. The measurement is fast and suitable for the inner diameter and depth detection of the deep and long hole.

[0024] Preferably, Figure 1 As shown, a rubber sleeve 4 is installed on the upper end of the gripping handle 3. The rubber sleeve 4 is made of elastic rubber. The rubber sleeve 4 on the gripping handle 3 is convenient for hand gripping and increases gripping friction.

[0025] Preferably, Figure 1 and Figure 3 As shown, the bottom end of the support rod 5 is movably connected with a contact block 6, and the contact end of the contact block 6 is arc-shaped. The contact block 6 movably connected to the bottom end of the support rod 5 is convenient for vertical contact with the inner wall of the deep and long hole to ensure accurate measurement. The arc-shaped contact end of the contact block 6 matches the cylindrical deep and long hole.

[0026] Preferably, Figure 3As shown, the lateral end of the resistance block 8 is cylindrical, and the length of the lateral end of the resistance block 8 is greater than the width of the support rod 5. The cylindrical lateral end of the resistance block 8 reduces the friction with the support rod 5 and facilitates sliding. At the same time, the longer lateral end of the resistance block 8 provides stable support for the support rod 5.

[0027] Preferably, Figure 3 and Figure 4 As shown, the depth rod 12 has a square cross section, and a bottom rod 13 is welded to the bottom end of the depth rod 12. The depth rod 12 with a square cross section is prevented from rotating in the rubber tube 11. The bottom rod 13 at the bottom of the depth rod 12 contacts the bottom end surface of the deep long hole, and the bottom rod 13 can reduce the wear of the depth rod 12 during use.

[0028] Preferably, Figure 3 As shown, the bottom rod 13 and the depth rod 12 are arranged on the same axis, and the bottom end of the bottom rod 13 is tapered. The bottom rod 13 and the depth rod 12 on the same axis ensure accurate depth detection, and the tapered end at the bottom end of the bottom rod 13 facilitates the centerline alignment of the deep and long hole.

[0029] Preferably, Figure 3 As shown, an operating cylinder 15 is welded to the upper end of the depth rod 12. The operating cylinder 15 is a hollow cylinder. The operating cylinder 15 at the upper end of the depth rod 12 is convenient for hand operation to perform depth detection.

[0030] The working principle of the utility model is as follows: the hand holds the holding handle 3, and after the two longer support rods 5 of the device are combined into the deep and long hole, the pull block 9 is driven to move upward through the knob screw 10, so that the resistance block 8 drives the support rods 5 on both sides to open, so that the contact end at the bottom of the support rod 5 contacts the inner wall of the deep and long hole, and the inner diameter of the deep and long hole is marked. The distance between the bottom ends of the two support rods 5 can be measured to obtain the inner diameter of the deep and long hole. A rubber tube 11 is installed in the middle of the main board 1, and a depth rod 12 is installed inside the rubber tube 11. The main board 1 The flat end of the bottom contacts the upper end surface of the deep and long hole, the depth rod 12 is pressed to contact the bottom end of the deep and long hole, the depth rod 12 is elastically clamped by the rubber tube 11, and the depth rod 12 cooperates with the scale 14 to detect the depth. The rubber tube 11 in the middle of the main board 1 can be rotated to adjust the angle of the depth rod 12 so that the scale 14 faces the user, which is convenient for depth reading. The device can measure the depth and inner diameter of the deep and long hole at the same time, with fast measurement, which is suitable for the inner diameter and depth detection of the deep and long hole.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deep and long hole precision measuring device, comprising a main board (1), characterized in that: The bottom end surface of the main board (1) is a flat surface, and sliding grooves (2) are provided on both sides of the main board (1). A hollow gripping handle (3) is welded to the middle of the upper end of the main board (1). Support rods (5) are movably connected to both sides of the main board (1), and a movable groove (7) is provided on the upper end of the support rod (5). A T-shaped resistance block (8) is installed in the movable groove (7) in a limited position, and a shaft is installed through the lateral end of the resistance block (8), and both ends of the shaft are clamped in the sliding groove (2). A pulling block (9) is mounted on the main board (1), two ends of the shaft through which the abutment block (8) passes are clamped at the bottom end of the pulling block (9), the main board (1) is rotatably connected to the upper limit position with a screw rod (10), the screw rod (10) is threadedly connected to the upper end of the pulling block (9), the middle of the main board (1) is rotatably connected to a rubber tube (11), a depth rod (12) is mounted inside the rubber tube (11), and a scale (14) is embedded and connected to one side of the depth rod (12).

2. A deep and long hole precision measuring device according to claim 1, characterized in that: A rubber sleeve (4) is installed on the upper end of the gripping handle (3), and the rubber sleeve (4) is made of elastic rubber.

3. The deep and long hole precision measuring device according to claim 1, characterized in that: The bottom end of the support rod (5) is movably connected to a contact block (6), and the contact end of the contact block (6) is arc-shaped.

4. The deep and long hole precision measuring device according to claim 1 is characterized in that: The transverse end of the abutment block (8) is cylindrical, and the length of the transverse end of the abutment block (8) is greater than the width of the support rod (5).

5. The deep and long hole precision measuring device according to claim 1 is characterized in that: The cross section of the depth rod (12) is square, and a bottom rod (13) is welded to the bottom end of the depth rod (12).

6. A deep and long hole precision measuring device according to claim 5, characterized in that: The bottom rod (13) and the depth rod (12) are arranged on the same axis, and the bottom end of the bottom rod (13) is conical.

7. The deep and long hole precision measuring device according to claim 5, characterized in that: An operating cylinder (15) is welded to the upper end of the depth rod (12), and the operating cylinder (15) is a hollow cylinder.

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