Detection tool for measuring center distance of two holes

Abstract

The utility model discloses a detection tool for measuring the center distance of two holes. The detection tool comprises a bottom plate, a measuring instrument fixedly connected with the bottom plate, and an adjusting block and a fixed block which are arranged on the bottom plate, the adjusting block is in sliding connection with the bottom plate through a distance adjusting mechanism, and a first elastic pin is fixedly arranged on the adjusting block; a sliding groove is formed in the top of the fixing block downwards, a sliding block is arranged in the sliding groove, a second elastic pin is arranged at the top of the sliding block, the sliding block slides in the connecting line direction of the first elastic pin and the second elastic pin through a sliding assembly, the fixing block is provided with an installation hole matched with the measuring end of the measuring instrument, and the measuring end of the measuring instrument is matched with the sliding block. According to the utility model, the center distance of two holes of different types of workpieces is adjusted through the distance adjusting mechanism, the center distance detection of different workpieces is realized, and the application range of the center distance detection tool is expanded.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of part detection, and specifically relates to a detection tool for measuring the center distance of two holes. BACKGROUND

[0002] The center distance of two holes is a key parameter for the cooperation of mechanical parts, and directly affects the transmission effect, stress distribution and running stability after assembly. For example, in box type parts (such as an engine shell), the center distance deviation of shaft holes can cause abnormal gear meshing, aggravation of bearing wear and other problems; for transmission parts such as connecting rods and crankshafts, the center distance error can cause vibration, noise and even mechanical failure.

[0003] Traditional center distance measurement is manually taken by workers and detected manually using a specific vernier caliper, which requires high skills of the detection personnel, and the manual detection can have detection errors after fatigue, affecting the accuracy and detection efficiency. Although the existing center distance gauge can quickly detect the center distance of the holes through mechanical table reading, the error is small, but the gauge can only detect a certain type of fixed workpiece, and the application range is small. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a detection tool for measuring the center distance of two holes to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:

[0006] A detection tool for measuring the center distance of two holes, comprising a bottom plate, a measuring instrument fixedly connected with the bottom plate, and an adjusting block and a fixed block arranged on the bottom plate; the adjusting block is slidably connected with the bottom plate through a distance adjusting mechanism, and a first elastic pin is fixedly arranged on the adjusting block; a sliding groove is formed downward on the top of the fixed block, a sliding block is arranged in the sliding groove, a second elastic pin is arranged on the top of the sliding block, the sliding block slides along the direction of the line connecting the first elastic pin and the second elastic pin through a sliding assembly, the fixed block is provided with a mounting hole matched with the measuring end of the measuring instrument, and the measuring end of the measuring instrument is arranged in cooperation with the sliding block.

[0007] Preferably, the sliding assembly comprises a guide rod fixedly arranged in the sliding groove and a first spring, the guide rod is parallel to the line connecting the first elastic pin and the second elastic pin, the sliding block is provided with a guide groove matched with the guide rod, and the first spring is sleeved outside the guide rod between the sliding block and the fixed block.

[0008] Preferably, the sliding block is provided with a positioning mounting groove matched with the first spring.

[0009] Preferably, the distance adjusting mechanism comprises a ball screw pair, a driving member, the bottom plate is provided with a mounting groove matched with the ball screw pair, a screw rod is rotatably arranged in the mounting groove, a nut arranged on the screw rod is slidably arranged in the mounting groove, the nut is connected with the adjusting block, and the driving end of the driving member is fixedly connected with one end of the screw rod.

[0010] Preferably, a slide rail is arranged between the bottom plate and the adjusting block, and the adjusting block is connected with the nut through a positioning assembly.

[0011] Preferably, the positioning assembly comprises a limiting groove arranged in the lower part of the adjusting block, a lifting column arranged in the limiting groove, a second spring arranged in the limiting groove and matched with the lifting column for resetting, a threaded groove arranged in the limiting groove and communicated with the upper part of the adjusting block, and a screw rod matched with the threaded groove and arranged in the first elastic pin.

[0012] Preferably, the fixing block is provided with a locking member matched with the slide assembly on the side.

[0013] Preferably, the locking member is a plug rod, the fixing block is provided with a plug hole matched with the plug rod, the plug rod is arranged in a sliding space formed by the sliding groove and the sliding block, and the diameter of one end of the plug rod inserted into the sliding space is consistent with the sliding distance of the sliding block under the non-deformation condition of the first spring in the sliding groove.

[0014] Compared with the prior art, the distance adjusting mechanism has the following beneficial effects:

[0015] In the utility model, the distance adjusting mechanism is used to adjust the center distance of two holes of different types of workpieces, to detect the center distance of different workpieces, and to expand the application range of the center distance gauge. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the utility model.

[0017] Figure 2 It is a top view of the utility model.

[0018] Figure 3 It is Figure 2 It is a sectional view structure schematic diagram in A-A direction.

[0019] Figure 4 It is Figure 2 It is a sectional view structure schematic diagram in B-B direction.

[0020] Figure 5 It is Figure 2 It is a sectional view structure schematic diagram of the fixing block in C-C direction in the utility model.

[0021] Marked: 1, bottom plate; 2, adjusting block; 3, fixed block; 31, sliding groove; 32, sliding block; 33, locking member; 34, positioning installation slot; 41, lead screw; 42, nut; 5, first spring pin; 6, second spring pin; 71, guide rod; 72, first spring; 8, sliding rail; 91, limiting groove; 92, lifting column; 93, second spring; 94, screw rod; 95, positioning groove; 100, measuring end. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Referring to Figures 1-5 As shown in the figure, a detection tool for measuring the center distance of two holes comprises a bottom plate 1, a measuring instrument fixedly connected with the bottom plate 1, and an adjusting block 2 and a fixed block 3 arranged on the bottom plate 1. The adjusting block 2 is arranged on the left side of the bottom, and the fixed block 3 is arranged on the right side of the bottom plate 1. The top surfaces of the adjusting block 2 and the fixed block 3 are at the same height. The adjusting block 2 is slidably connected with the bottom plate 1 through a distance adjusting mechanism. The distance adjusting mechanism is used to adjust the distance between the adjusting block 2 and the fixed block 3 to adapt to the measurement of the center distance of different workpieces. The first elastic pin is fixedly arranged on the adjusting block 2. The sliding groove 31 is formed downward on the top of the fixed block 3. The sliding block 32 is arranged in the sliding groove 31. The second elastic pin is arranged on the top of the sliding block 32. The sliding block 32 slides along the line connecting the first elastic pin and the second elastic pin through the sliding assembly. In this embodiment, the sliding block 32 slides leftward or rightward. The maximum sliding stroke is the same, which is d. The measuring instrument is a mechanical watch. The fixed block 3 is provided with a mounting hole matched with the measuring end 100 of the measuring instrument. The measuring end 100 of the measuring instrument is matched with the sliding block 32. When the sliding block 32 moves, the measuring end 100 of the measuring instrument moves, and the measurement value changes. At this time, it indicates that the center distance of the measured workpiece does not meet the standard.

[0024] Specifically, the sliding assembly comprises the guide rods 71 fixedly arranged in the sliding groove 31 and the first spring 72 arranged between the sliding block 32 and the fixed block 3. The guide rods 71 are arranged in four, which are respectively arranged on the upper part and the lower part of the front side and the rear side of the sliding block 32. All the guide rods 71 are parallel to the line connecting the first elastic pin and the second elastic pin. The sliding block 32 is provided with a guide groove matched with the guide rods 71, so as to realize the sliding of the sliding block 32 along the guide rods 71. The first spring 72 is sleeved outside the guide rods 71, which is used to reset the sliding block 32 for the next detection. The sliding block 32 is provided with the positioning installation slot 34 matched with the first spring 72 to position the first spring 72.

[0025] Here, no matter the first elastic pin or the second elastic pin, it is matched with the through hole on the workpiece, and the positioning of the workpiece is carried out at the same time, so it is detachably connected with the adjusting block 2 and the fixed block 3 through the threaded connection, so as to adapt to the requirements of different workpiece hole diameters.

[0026] Specifically, the distance adjusting assembly includes a ball screw pair and a driving member (not shown in the figure), the ball screw pair is composed of a screw rod 41 and a nut 42, a square mounting groove is formed in the ball screw pair matched with the top of the bottom plate 1, the screw rod 41 is rotatably mounted in the mounting groove through the bearing embedded on the bottom plate 1, the nut 42 is a square structure matched with the mounting groove, which prevents the synchronous rotation of the nut 42 during the rotation of the screw rod 41, thereby realizing the left and right movement of the nut 42. The driving member can be a motor, the fixed end of the motor can be fixed on the bottom plate 1, the output end of the motor is fixedly connected with the left end of the screw rod 41, and the driving force is provided by the motor; of course, the left end of the screw rod 41 can also be fixedly connected with a ratchet, and the driving force is provided by the hand-rotating mode, the specific installation of the driving member is a conventional technical means in the art, and those skilled in the art can set it according to the actual situation. On this basis, the nut 42 is connected with the adjusting block 2, and the adjusting block 2 moves synchronously with the movement of the nut 42.

[0027] In this embodiment, referring to Figure 1 and Figure 4 , the bottom plate 1 is provided with a sliding rail 8, and the adjusting block 2 slides on the sliding rail 8. The sliding rail 8 is in a limiting structure, which ensures smooth and reliable sliding while preventing the adjusting block 2 from moving up and down. The adjusting block 2 is connected with the nut 42 through the positioning assembly under the action of the first elastic pin, specifically, the positioning assembly includes a threaded groove formed in the upper part of the adjusting block 2, a limiting groove 91 formed in the lower part of the adjusting block 2, a lifting column 92 arranged in the limiting groove 91, a second spring 93 arranged in the limiting groove 91 to reset the lifting column 92, and a screw rod 94 fixedly arranged at the bottom of the first elastic pin. In the case that the second spring 93 is not deformed, the lifting column 92 is completely arranged inside the adjusting block 2, the first elastic pin is connected with the adjusting block 2 through the screw rod 94 fixedly arranged at the bottom of the first elastic pin and the threaded groove in the upper part of the adjusting block 2, and the first elastic pin presses and fixes the lifting column 92 at the same time, so that the bottom of the lifting column 92 is arranged below the adjusting block 2. The bottom of the lifting column 92 is arranged in a positioning groove 95 arranged at the top of the nut 42, and the shape of the positioning groove 95 is consistent with the shape of the bottom of the lifting column 92. The positioning assembly facilitates the quick installation of the adjusting block 2, the ball screw pair, the first elastic pin and the like.

[0028] Further, the fixing block 3 is provided with locking members 33 on the sides of the sliding assembly, which are used to fix the second elastic pin when the distance between the first elastic pin and the second elastic pin needs to be adjusted by the distance adjusting assembly during the measurement of a new workpiece, so that the sliding block 32 is in the correction position, and the distance adjustment is performed only by the distance adjusting assembly, thereby ensuring the reliability of the measurement.

[0029] Specifically, the locking members 33 can be in the form of plug blocks inserted into the sliding grooves 31 on the left and right sides of the sliding block 32. The maximum length of the sliding block 32 inserted into the sliding groove 31 should be the sliding distance of the sliding block 32 under the non-deformed condition of the first spring 72 in the sliding groove 31, so that the sliding block 32 is in the correction position. In the embodiment, as shown in FIG. 3, the locking members 33 are in the form of plug rods, and two plug rods are provided. One end of each of the two plug rods is arranged in the sliding groove 31, and one end of one of the plug rods is arranged on the left side of the sliding block 32, and one end of the other plug rod is arranged on the right side of the sliding block 32. The diameter of one end of each of the two plug rods inserted into the sliding groove 31 is consistent with the sliding distance of the sliding block 32 under the non-deformed condition of the first spring 72 in the sliding groove 31, and is d. The front side of the fixing block 3 is provided with a plug hole corresponding to one of the plug rods, and the rear side of the fixing block 3 is also provided with a plug hole corresponding to the other plug rod. After the distance adjustment is completed, the plug rods can be directly taken out for center distance detection. Figure 5

[0030] The above-described embodiments are only preferred embodiments of the present application, and do not limit the present application in any form. Other variants and modifications can be made without departing from the technical solutions recited in the claims.​

Claims

1. A detection tool for measuring the center distance of two holes, characterized by, The utility model provides a distance adjustable measuring instrument, including bottom plate (1), with bottom plate (1) fixed connection's measuring instrument, and set up on the adjusting block (2) and fixed block (3) of bottom plate (1), adjusting block (2) is connected with bottom plate (1) through distance adjusting mechanism and is slidably connected, and the first elastic pin is fixedly arranged on adjusting block (2), the top of fixed block (3) is set up the sliding slot (31) downward, the sliding block (32) is set up in the sliding slot (31), and the second elastic pin is arranged on the top of sliding block (32), and the sliding block (32) is slid along the line direction of first elastic pin and second elastic pin through sliding assembly, the mounting hole is set up with the measuring end (100) of measuring instrument of fixed block (3) cooperation measuring instrument's measuring end (100) is set up with sliding block (32) cooperation.

2. The detection tool for measuring the center distance between two holes according to claim 1, wherein, The sliding assembly includes a guide rod (71) fixedly arranged in the sliding slot (31) and a first spring (72), the guide rod (71) is parallel to the line of the first elastic pin and the second elastic pin, the sliding block (32) is provided with a guide groove matched with the guide rod (71), and the first spring (72) is sleeved outside the guide rod (71) between the sliding block (32) and the fixed block (3).

3. The detection tool for measuring the center distance between two holes according to claim 2, wherein, The sliding block (32) is provided with a positioning mounting groove (34) matched with the first spring (72).

4. The gauge of claim 1 wherein, The distance adjusting mechanism includes a ball screw pair and a driving member, the bottom plate (1) is provided with a mounting groove matched with the ball screw pair, a screw rod (41) is rotatably mounted in the mounting groove, a nut (42) provided on the screw rod (41) is slidably mounted in the mounting groove, the nut (42) is connected with the adjusting block (2), and a driving end of the driving member is fixedly connected with one end of the screw rod (41).

5. The gauge of claim 4 wherein, A sliding rail (8) is arranged between the bottom plate (1) and the adjusting block (2), and the adjusting block (2) is connected with the nut (42) through a positioning assembly.

6. The gauge of claim 5 wherein, The positioning assembly includes a limiting groove (91) formed in the lower part of the adjusting block (2), a lifting column (92) arranged in the limiting groove (91), a second spring (93) arranged in the limiting groove (91) and matched with the lifting column (92) for resetting, a threaded groove formed in the upper part of the adjusting block (2) and communicated with the limiting groove (91), and a screw rod (94) arranged in the threaded groove and matched with the first elastic pin.

7. The gauge of claim 1 wherein, The fixed block (3) is provided with a locking member (33) matched with the sliding assembly on the side.

8. The gauge of claim 7 wherein, The locking member (33) is a plug rod, the fixed block (3) is provided with a plug hole matched with the plug rod, the plug rod is arranged in a sliding space formed by the sliding slot (31) and the sliding block (32), and the diameter of one end of the plug rod inserted into the sliding space is consistent with the sliding distance of the first spring (72) in the sliding slot (31) when the sliding block (32) is not deformed.

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