Sliding block arc groove center distance dimension detection device

Abstract

The utility model relates to a slide block arc groove center distance dimension detection device in the ball slide block guide rail pair measurement technology field, comprising a pedestal and a right pedestal, the surface of the pedestal is provided with square grooves of different dimensions, the rear part of the pedestal is provided with a cushion block, the upper part of the pedestal is fixedly provided with a dovetail groove type guide rail and a fixed seat, and the dovetail groove type guide rail and the fixed seat are fixed on the right pedestal. According to the measuring device, the measured value of the standard sliding block is compared with the measured value of the measured sliding block, and the size parameter of the center distance of the arc groove of the sliding block is indirectly obtained through the inductance measuring head. The measuring device is simple in structure, all operations can be completed by only one person, the measuring efficiency is greatly improved, the inductive probe is used for measurement, the result is accurate and visual, reading errors caused by different experiences of workers are avoided, and the measuring precision is high. And measuring devices with different sizes can be designed according to sliding blocks with different sizes, so that the device is wide in application range and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of ball slider guide pair measurement, in particular to a slider circular arc groove center distance size detection device. Background Art

[0002] With the continuous development of the field of mechanical engineering, the precision requirements for many devices are getting higher and higher. Linear guides and sliders, as the most commonly used functional components, have a decisive influence on the overall accuracy of the equipment, and the parameters of the slider arc groove center distance play an important role in it. However, the current measurement of the arc groove size is only carried out in batches using a ball head gear micrometer, and the initial inspection and random inspection are carried out using a manual imager. The slider replaces the large and small steel balls to keep the preload force within a certain range after the slider and guide rail are assembled. This measurement method is time-consuming and labor-intensive, and the detection accuracy is related to the worker's operating experience level, and the accuracy is difficult to guarantee. In addition, the measurement error of the center distance dimension accuracy of a single slider guide rail is large, and it is impossible to finely divide the size grades, which makes batch assembly difficult. For this reason, we propose a slider arc groove center distance dimension detection device. Utility Model Content

[0003] In view of the above problems, the utility model provides a circular arc groove center distance measuring device with simple operation, high detection accuracy and measurement efficiency, thereby improving the production efficiency and processing quality of the ball slider.

[0004] The technical solution of the utility model is:

[0005] A device for detecting the center distance of a circular arc groove of a slider comprises a base and a right base, wherein the surface of the base is provided with square grooves of different sizes, a pad is installed at the rear of the base, a dovetail groove guide rail and a fixed seat are fixedly installed above the base, a Y-direction movable measuring mechanism is installed at the top of the dovetail groove guide rail, an adjusting knob for controlling the entire Y-direction movable measuring mechanism to move in the X direction is installed on one side of the dovetail groove guide rail, a locking nut for fixing the movement of the Y-direction movable measuring mechanism is installed on the other side of the dovetail groove guide rail, the Y-direction movable measuring mechanism comprises a cross guide rail, a micro-motion knob for controlling the Y-direction movement of the cross guide rail is installed on one side of the cross guide rail, a locking knob for fixing the cross guide rail is installed on the other side of the cross guide rail, an L-shaped bracket is fixedly installed at the top of the cross guide rail, a clamping mechanism is fixedly installed at the top of the L-shaped bracket, and an inductive sensing probe is installed at the middle position of the clamping mechanism.

[0006] In a further technical solution, linear guides are installed on both sides of the bottom end of the right base, a slider is installed above the linear guide, both sides of the slider are fixed on the right base through set connecting gaskets, a moving seat is installed on the top of the right base, a fixed seat is installed on the rear side of the moving seat, a measured slider is installed on the top of the fixed seat, and a pad is installed on one side of the fixed seat.

[0007] In a further technical solution, a three-hole fixing bracket is installed on the top of the cushion block, and three holes are opened on the three-hole fixing bracket. An electromagnet and a proximity switch are installed in the three holes respectively, and the proximity switch is located in the middle hole. Adjustment push rods are installed on the top of the three-hole fixing bracket and above the three holes, and movable blocks are fixedly installed on the bottom ends of the three adjustment push rods. Snap rings for fixing the two ends of the three-hole fixing bracket are installed on both sides of the three-hole fixing bracket.

[0008] In a further technical solution, a spring guide mechanism is installed between the movable seat and the fixed seat, and the spring guide mechanism includes a guide sleeve fixedly installed on the fixed seat, a spring fixed seat is installed at one end of the guide sleeve, one end of the spring fixed seat is in contact with the movable seat, and a tension spring is installed on the outer surface of the guide sleeve.

[0009] In a further technical solution, four sets of ball retaining mechanisms are installed on the inner side of the tested slider, and the ball retaining mechanism includes a rod body, both ends of the rod body are installed with precision balls, and retaining frames are installed on both sides of the precision balls and on the surface of the rod body.

[0010] In a further technical solution, the clamping mechanism includes a lower cover, an upper cover is installed on the top of the lower cover, connecting rings are installed at both ends of the upper cover, cylindrical pins are installed at both ends of the lower cover, the lower cover and the upper cover are locked by two cylindrical pins and the connecting ring, an adjusting bolt is threadedly installed on the top of the upper cover, a top block is installed at the bottom end of the adjusting bolt and inside the top of the upper cover, and a limited locking knob is installed on the front surface of the top block.

[0011] The beneficial effects of the utility model are:

[0012] This measuring device compares the measured value of the standard slider with the measured value of the slider under test, and indirectly obtains the size parameter of the slider arc groove center distance through the inductive probe. This measuring device has a simple structure, and only one person is required to complete all operations, which greatly improves the measurement efficiency. The inductive probe is used for measurement, and the results are accurate and intuitive, eliminating the reading errors caused by different workers' experience, and the measurement accuracy is high. In addition, this device can design measuring devices of different sizes according to sliders of different sizes, which can adapt to a wide range and has strong universal ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the spring guide mechanism of the utility model embodiment;

[0015] Figure 3 It is a structural schematic diagram of the ball cage mechanism of the embodiment of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the clamping device of the embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 1. Base; 2. Dovetail groove guide rail; 3. Linear guide rail; 4. Slider; 5. Right base; 6. Moving seat; 7. Fixed seat; 8. Rod body; 9. Cage; 10. Precision ball; 11. Slider to be measured; 12. Electromagnet; 13. Proximity switch; 14. Three-hole fixing frame; 15. Snap ring; 16. Movable block; 17. Adjusting push rod; 18. Pad; 19. Inductive probe; 20. L-shaped bracket; 21. Clamping mechanism; 22. Locking knob; 23. Cross guide rail; 24. Micro-motion knob; 25. Adjusting knob; 26. Locking nut; 27. Connecting gasket; 28. Guide sleeve; 29. ​​Spring fixing seat; 30. Tension spring; 211. Lower cover; 212. Cylindrical pin; 213. Connecting ring; 214. Upper cover; 215. Top block; 216. Limit locking knob; 217. Adjusting bolt. DETAILED DESCRIPTION

[0019] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1-Figure 4As shown, a device for measuring the center distance of a slider circular arc groove comprises a base 1, on which square grooves of different sizes are opened as installation references for various components installed on the base 1, so that the installation positions of various components are accurate and reliable, a cushion block 18 is installed at the rear of the base 1, and a dovetail groove guide rail 2 that can move forward and backward in the X direction, a linear guide rail 3 that can move left and right in the Y direction, and a fixed seat 7 for placing a ball retainer are fixedly installed above the base 1. The dovetail groove guide rail 2 is equipped with an adjusting knob 25, a locking nut 26 and a Y-direction movement measuring mechanism. The adjusting knob 25 is responsible for supporting the entire Y-direction movement measuring mechanism to move forward and backward in the X direction, and the locking nut 26 is responsible for fixing the Y-direction movement measuring mechanism. The Y-direction movement measuring mechanism includes a cross guide rail 23, a micro knob 24, and a locking knob 22. When the micro knob 24 rotates, the cross guide rail 23 can be controlled to move the L-shaped bracket 20 left and right in the Y direction. The locking knob 22 is used to fix the L-shaped bracket 20. A clamping mechanism 21 is fixedly installed on the L-shaped bracket 20. An inductive probe 19 is installed between the L-shaped bracket 20 and the clamping mechanism 21. The inductive probe 19 obtains the measured value by sensing the moving distance of the moving seat 6, and then obtains the center distance value of the slider arc groove. The small cylinder at the end of the inductive probe 19 is connected to the connecting line, and then a display is connected to display the measurement result.

[0022] The linear guide rail 3 is provided with a slider 4 which can move left and right in the Y direction. The slider 4 and the right base 5 are fixed together by a connecting gasket 27. The right base 5 is installed on the slider 4 on the two linear guide rails 3, connecting the two guide rails into one, and carrying the right base 5 and the moving seat 6 for micro-movement.

[0023] The pad 18 is provided with a three-hole fixing frame 14, which has three holes, and two pairs of electromagnets 12 and a proximity switch 13 are respectively installed in the holes. The movable block 16 is pushed by adjusting the push rod 17 so that its top is respectively against the proximity switch 13 and the electromagnet 12, so that it is firmly fixed on the three-hole fixing frame 14. At the same time, there are snap rings 15 on both sides of the three-hole fixing frame 14 to play an auxiliary fixing role. During measurement, when the measured slider 11 moves from front to back in the X direction, the proximity switch 13 senses the approach of the measured slider 11, so that the electromagnet is energized, adsorbs the measured slider 11, and fixes it on the fixed seat 7 and the movable seat 6.

[0024] A spring guide mechanism is installed between the fixed seat 7 and the movable seat 6, which includes a spring guide sleeve 28, a spring fixed seat 29 and a tension spring 30. One end of the spring guide mechanism is fixed to the fixed seat 7 by bolts, and the other end is against the hole opened on the movable seat 6. Under the action of the spring, the movable seat 6 on the linear guide rail 3 can move slightly, so that the precision ball 10 can be in close contact with the arc raceway in the measured slider 11, preparing for the next step of measuring the inductive probe 19.

[0025] Reference Figure 3 The ball cage mechanism includes a rod body 8, a cage 9 and a precision ball 10. The rod body 8 is a segmented structure, and the connection is welded or bonded to the two ends of the separated rod body by arc bars. When the rod body material is metal, welding is adopted, and when the material is non-metal, bonding is adopted. The cage 9 is also installed on the rod body 8, which is in a semi-circular arc wrapping shape and is used to fix the precision ball 10 to prevent it from slipping. The ball cage mechanism has 4 as a whole, which are respectively installed on the 4 inner arc raceways of the measured slider 11. Each precision ball is against the arc raceway and is in close contact with it.

[0026] It should be further explained that the radius of each precision ball is the same as the radius of the arc raceway of the slider 11 to be measured.

[0027] Reference Figure 4 The clamping device 21 is composed of a lower cover 211, an upper cover 214, a cylindrical pin 212, a connecting ring 213, a top block 215, a limit locking knob 216 and an adjusting bolt 217. When the inductive probe 19 is clamped, the upper and lower covers are fastened by the connecting ring 213, the nut and the cylindrical pin 212, and then the adjusting bolt 217 is screwed to push the top block 215 until its tip contacts the measuring rod of the inductive probe 19. There are three top blocks, which are arranged in an equilateral triangle and can stably clamp the measuring rod without shaking. Under the joint action of the clamping device 21 and the L-shaped bracket 20, the probe part of the measuring rod 19 can be perpendicular to the surface of the moving seat 6 and can be parallel to the center line of the clamping device 21 and the center line of the hole on the L-shaped bracket 20, so that the final measurement result of the center distance of the slider arc groove is accurate and reliable.

[0028] Working process:

[0029] When the entire device is assembled intact, first, select a standard slider and slowly push the slider along the central axis direction of the four ball retainer rods 8 until the proximity switch 13 senses the approach of the standard slider. At this time, under the action of the proximity switch 13, the electromagnet 12 is energized to firmly adsorb the column slider. During the pushing process of the standard slider, the spring 30 is compressed along the central axis direction of the spring guide sleeve 28, and the moving seat 6 moves in the Y direction with the assistance of the linear guide 3. After the standard slider is adsorbed and fixed, under the action of the elastic force of the spring 30, the precision ball 10 is tightly in contact with the inner arc raceway of the standard slider. Then rotate the adjustment knob 25 to control the measuring rod 19 and its auxiliary parts to move in the X direction until they reach the position directly below the slider, then rotate the locking nut 26 to fix the X-direction movement of the measuring rod 19, then rotate the micro-motion knob 24 to move the measuring rod 19 and its auxiliary parts in the Y direction until the inductive probe 19 contacts the moving seat 6, then rotate the locking knob 22 to fix the movement in the Y direction, then read the measured value and record it, then rotate the locking nut 26 in the opposite direction to unlock it, and then rotate the adjustment knob 25 to move the measuring rod back and forth in the X direction, and record the value of the inductive probe at different positions. Finally, remove the standard slider and replace it with the measured slider 11, ensuring that the position of the measuring rod remains unchanged, and perform the same operation to record the value of the measuring rod change in the case of the standard slider and the measured slider. Since the center distance of the standard slider is known, the center distance parameter value of the arc groove raceway of the measured slider can be easily obtained through the change value.

[0030] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A device for detecting the center distance of a slider arc groove, comprising a base (1) and a right base (5), characterized in that: The surface of the base (1) is provided with square grooves of different sizes, a cushion block (18) is installed at the rear of the base (1), a dovetail groove guide rail (2) and a fixing seat (7) are fixedly installed on the top of the base (1), a Y-direction moving measuring mechanism is installed at the top of the dovetail groove guide rail (2), an adjusting knob (25) for controlling the entire Y-direction moving measuring mechanism to move in the X direction is installed on one side of the dovetail groove guide rail (2), and a locking nut (26) for fixing the movement of the Y-direction moving measuring mechanism is installed on the other side of the dovetail groove guide rail (2). The Y-direction movement measuring mechanism comprises a cross guide rail (23), a micro-motion knob (24) for controlling the Y-direction movement of the cross guide rail (23) is installed on one side of the cross guide rail (23), a locking knob (22) for fixing the cross guide rail (23) is installed on the other side of the cross guide rail (23), an L-shaped bracket (20) is fixedly installed at the top end of the cross guide rail (23), a clamping mechanism (21) is fixedly installed at the top end of the L-shaped bracket (20), and an inductive sensor head (19) is installed at the middle position of the clamping mechanism (21).

2. A device for detecting the center distance of a slider arc groove according to claim 1, characterized in that: Linear guide rails (3) are installed on both sides of the bottom end of the right base (5), a slider (4) is installed above the linear guide rail (3), and both sides of the slider (4) are fixedly installed on the right base (5) through connecting gaskets (27). A moving seat (6) is installed on the top of the right base (5), a fixed seat (7) is installed on the rear side of the moving seat (6), a slider (11) to be measured is installed on the top of the fixed seat (7), and a cushion block (18) is installed on one side of the fixed seat (7).

3. A device for detecting the center distance of a slider arc groove according to claim 2, characterized in that: A three-hole fixing frame (14) is installed at the top of the cushion block (18), and three holes are opened on the three-hole fixing frame (14). Two electromagnets (12) and a proximity switch (13) are installed in the three holes respectively, and the proximity switch (13) is located in the middle hole. Adjustment push rods (17) are installed at the top of the three-hole fixing frame (14) and above the three holes. Movable blocks (16) are fixedly installed at the bottom ends of the three adjustment push rods (17). Clamp rings (15) for fixing the two ends of the three-hole fixing frame (14) are installed on both sides of the three-hole fixing frame (14).

4. A device for detecting the center distance of a slider arc groove according to claim 2, characterized in that: A spring guide mechanism is installed between the movable seat (6) and the fixed seat (7), and the spring guide mechanism comprises a guide sleeve (28) fixedly installed on the fixed seat (7), one end of the guide sleeve (28) is installed with a spring fixed seat (29), one end of the spring fixed seat (29) is in contact with the movable seat (6), and a tension spring (30) is installed on the outer surface of the guide sleeve (28).

5. A device for detecting the center distance of a slider arc groove according to claim 2, characterized in that: Four sets of ball retaining mechanisms are installed on the inner side of the measured slide block (11), and the ball retaining mechanism comprises a rod body (8), both ends of the rod body (8) are installed with precision balls (10), and retaining frames (9) are installed on both sides of the precision balls (10) and on the surface of the rod body (8).

6. A device for detecting the center distance of a slider arc groove according to claim 1, characterized in that: The clamping mechanism (21) comprises a lower cover (211), an upper cover (214) is installed at the top end of the lower cover (211), connecting rings (213) are installed at both ends of the upper cover (214), cylindrical pins (212) are installed at both ends of the lower cover (211), the lower cover (211) and the upper cover (214) are locked by two cylindrical pins (212) and the connecting ring (213), an adjusting bolt (217) is threadedly installed at the top end of the upper cover (214), a top block (215) is installed at the bottom end of the adjusting bolt (217) and located inside the top end of the upper cover (214), and a locking limit knob (216) is installed on the front surface of the top block (215).

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