A high-precision end face-to-blind hole axis perpendicularity detection device

Abstract

The application provides a high-precision end face-to-blind hole axis perpendicularity detection equipment, which comprises a detection table, a driving gear and a driven gear rotatably arranged on the detection table and engaged with each other, the driving gear is driven to rotate by a motor, a telescopic fixing rod and a mounting disc are sequentially and fixedly connected above the driven gear, an equipment box is fixedly arranged on the detection table, a detection device for detecting the end face perpendicularity of a detection piece is fixedly arranged on the equipment box, a warning device is arranged in the equipment box, a moving block is movably arranged on the moving rod, a detection cavity is formed in the moving block, and a detection rod is movably arranged in the detection cavity. In the process of using the device, the detection piece is fixed on the mounting disc through the fixing device, the detection rod can intermittently move on the end face through the cooperation of the inflation device and the inflation rod, the detection piece is marked when an unqualified piece is detected, and the operator is prompted through the sound emitted by the ventilation whistle.

Description

Technical Field

[0001] This invention relates to the field of blind hole axis perpendicularity detection technology, specifically a high-precision end face perpendicularity detection device for blind hole axis. Background Technology

[0002] In the process of mechanical manufacturing, it is often necessary to drill holes in some materials, such as the inner and outer rings and threaded holes of bearings. For some high-precision products, the perpendicularity of the hole axis needs to be checked after production to meet the requirements of subsequent installation and use. Blind holes are through holes that connect the surface and inner layers without penetrating the entire plate. They have a certain depth, but the depth of the hole usually does not exceed a certain ratio. During the production and manufacturing process, whether it is a blind hole or a through hole, the perpendicularity of its axis to the mold end face needs to be checked.

[0003] The patent application CN202885750U discloses an end-face perpendicularity measuring instrument for blind hole axes. It includes an expandable mandrel that slides in various directions within the hole as needed for measurement; a lower plane perpendicular to the mandrel's axis rests on a steel ball at the bottom of the blind hole, serving as a measurement reference point; the expandable mandrel, through a movable expansion ball, contacts the inner wall of the blind hole, simulating the blind hole's axis; the mandrel is inserted into the blind hole to an effective depth of L1, and the distance from the mandrel's axis to the dial indicator's probe axis is L2; ​​a dial indicator probe mounted on the left end of a horizontal plate rests on the blind hole's end face; rotating the mandrel one revolution causes the dial indicator on the horizontal plate to measure the perpendicularity error of the blind hole's axis. This end-face perpendicularity measuring instrument for blind hole axes allows for simple, quick, and accurate measurement, ensuring product quality.

[0004] However, the above-mentioned device still has the following problems during implementation:

[0005] 1. For some products with high precision requirements, each one often needs to be inspected individually, which is a huge workload. In the actual production process, there are certain precision requirements. Under this precision standard, there are only two results: qualified and unqualified. Therefore, during the inspection process, it is not necessary to check the product's error rate, but only whether the product's precision is within the specified range. However, due to the huge workload, and the fact that existing inspection equipment often requires inspectors to keep an eye on the dial indicator at all times and judge whether the product is qualified by the magnitude of the pointer swing, the operators are not only very tired, but also prone to making judgment errors during long-term high-intensity inspections, which affects the pass rate of finished products.

[0006] 2. In current testing equipment, the dial indicator probe often only contacts a linear loop on the end face during the testing process. If it is necessary to select several points on the end face for testing, the position of the dial indicator and the probe needs to be adjusted multiple times, which is very troublesome. Summary of the Invention

[0007] The purpose of this invention is to provide a high-precision end face perpendicularity testing device for blind hole axis, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A high-precision end face perpendicularity testing device for blind hole axis includes a testing table. A drive gear and a driven gear are rotatably mounted on the testing table. The drive gear is driven by a motor located at the bottom of the testing table. A telescopic fixing rod and a mounting plate are fixedly connected above the driven gear in sequence. The mounting plate is provided with a fixing device for clamping the test piece.

[0010] An equipment box is fixedly installed on the testing table. A testing device for detecting the perpendicularity of the end face of the test piece is fixedly installed on the equipment box. An alarm device is installed inside the equipment box. When the testing device detects that the test piece is unqualified, the alarm device marks the test piece and then sounds an alarm to remind the operator.

[0011] Preferably, the fixing device includes a fixing plate fixedly mounted on the mounting plate, a track rod symmetrically fixedly mounted between the two fixing plates, a clamping block symmetrically and movably mounted on the track rod, a first spring fixedly connected between the clamping block and the fixing plate, and the detection element placed between the two clamping blocks.

[0012] Preferably, the detection device includes a movable rod fixedly mounted on the bottom side of the equipment box, a movable block movably sleeved on the movable rod, a detection cavity opened inside the movable block, a movable detection rod movably extending inside the detection cavity, the detection rod movably contacting the end face of the detection piece, a second spring fixedly connected to the detection rod and the inner wall of the detection cavity, a laser emitter disposed inside the detection cavity, and a laser receiver fixedly disposed at the end of the detection rod near the laser emitter, the movable block moving intermittently under the push of the inflatable rod to perform multi-point detection on the surface of the detection piece, and the inflatable rod being inflated in stages by an inflation device.

[0013] Preferably, the inflation device includes a horizontal groove formed on the surface of the testing table, a movable block disposed inside the horizontal groove, a toothed plate fixedly connected to the movable block and meshing with a drive gear, a rotating gear rotatably disposed on the testing table and meshing with the toothed plate, a rotating disk fixedly connected to the rotating gear via a vertical rod, an inflation chamber disposed inside the equipment box, an inflation rod communicating with the inside of the inflation chamber via a hose, the inflation chamber communicating with the outside via an air inlet, a one-way valve disposed inside the air inlet and at the connection between the hose and the inflation chamber, an inflation piston movably disposed inside the inflation chamber, the inflation piston and the rotating disk being connected via a rocker arm, both ends of the rocker arm being rotatably connected to the inflation piston and the rotating disk.

[0014] Preferably, the warning device includes an installation cavity inside the equipment box, the installation cavity being connected to an inflation cavity via an air passage, and a one-way valve being installed inside the air passage. A sealing plate is movably installed inside the installation cavity, and a third spring is fixedly connected to the sealing plate and the inner wall of the installation cavity. A movable connecting rod is fixedly connected to the sealing plate, and the connecting rod is movably locked by a snap-fit ​​device. One end of the connecting rod is fixedly connected to a colored block that movably contacts the detection element. The installation cavity is connected to the outside via an exhaust duct, and a ventilation whistle is fixedly installed inside the exhaust duct. The exhaust duct is movably blocked by an air-blocking device.

[0015] Preferably, the latching device includes a latching cavity inside the equipment box, an electromagnet electrically connected to the laser receiver is fixedly installed inside the latching cavity, a magnetic latch block is provided inside the latching cavity to movably latch the connecting rod, and a fourth spring is fixedly connected between the magnetic latch block and the electromagnet.

[0016] Preferably, the air-blocking device includes an electric telescopic rod fixedly installed inside the mounting cavity, the electric telescopic rod being fixedly connected to a baffle that movably blocks the exhaust passage, the baffle blocking the exhaust passage when not subjected to external force, and a relay being fixedly installed inside the mounting cavity that is in movable contact with the sealing plate, the relay being electrically connected to the electric telescopic rod.

[0017] Preferably, a bearing is rotatably mounted on the bottom side of the equipment housing, and an axial rod that extends movably into the blind hole of the test piece is fixedly connected to the inner ring of the bearing.

[0018] Preferably, the end of the detection rod that is in active contact with the detection element is spherical.

[0019] Preferably, the coloring block is a sponge block soaked in pigment.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By setting up an inflation device, the inflation rod is inflated intermittently, causing the inflation rod to extend intermittently. This drives the moving block to move the detection rod intermittently, thereby detecting multiple points and linear loops of the test piece.

[0022] 2. Abandoning the original dial indicator, the laser emitter and laser receiver are used to determine whether the end face flatness and perpendicularity of the test piece are qualified. When the test piece is unqualified, the laser receiver releases the connecting rod through the control buckling device. At this time, the high-pressure gas inside the mounting cavity drives the connecting rod to move down, causing the coloring block to squeeze the end face of the test piece and mark the unqualified test piece.

[0023] 3. During the downward movement of the connecting rod, the relay is squeezed, causing the electric telescopic rod to move the baffle to no longer block the exhaust passage. At this time, the high-pressure gas inside the installation cavity is discharged through the exhaust passage and the ventilation whistle, making a sound to remind the operator that the perpendicularity of the end face of the test piece is not up to standard.

[0024] 4. The test piece is fixed on the mounting plate by a fixing device. At the same time, the mounting plate is continuously rotated by the drive gear and the driven gear, so that the test piece is continuously rotated for testing.

[0025] In the process of using this invention, the detection piece is first placed between two clamping blocks. Under the action of the first spring, the detection piece is clamped by the two clamping blocks. At this time, by adjusting the telescopic fixing rod, the mounting plate is moved upward, so that the shaft rod extends into the blind hole of the detection piece. At the same time, the spherical end of the detection rod just contacts the end face of the detection piece. Then, the motor is turned on. The motor drives the mounting plate and the test piece to rotate continuously via the drive gear and driven gear. During the rotation of the drive gear, the rotating gear and the rotating plate are continuously rotated via the gear plate. During the rotation of the rotating plate, the rocker arm drives the inflation piston to intermittently inflate the inflation rod and the interior of the mounting cavity. At this time, the inflation rod drives the moving block to continuously move the test rod to detect multiple points and linear loops on the test piece. The laser receiver detects the perpendicularity of the end face of the test piece by receiving the laser. When a defect is detected, the laser receiver controls the latching device through the built-in chip, so that the connecting rod is no longer stuck. At this time, under the action of the high-pressure gas inside the mounting cavity, the connecting rod moves the coloring block down to contact the test piece and mark it. At the same time, as the sealing plate moves the connecting rod down, it squeezes the relay, so that the baffle no longer blocks the exhaust channel. At this time, the gas inside the mounting cavity is discharged through the exhaust channel and the ventilation whistle, which makes a sound to remind the operator. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the detection table of the present invention;

[0027] Figure 2This is a schematic diagram of the three-dimensional structure on the installation disk of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the rotating gear, vertical rod, and rotating disk of the present invention arranged on the testing table;

[0029] Figure 4 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0030] Figure 5 This is a top sectional view of the interior of the equipment housing of the present invention;

[0031] Figure 6 This is a front sectional view of the interior of the equipment box of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of the mounting cavity of the present invention;

[0033] Figure 8 This is a three-dimensional structural diagram of the connection between the shaft rod and the bearing of the present invention;

[0034] Figure 9 This is a three-dimensional structural diagram of the movable block and movable rod of the present invention;

[0035] Figure 10 This is a schematic diagram of the internal structure of the moving block of the present invention.

[0036] In the diagram: 1. Testing table; 101. Horizontal groove; 2. Drive gear; 3. Driven gear; 4. Motor; 5. Telescopic fixing rod; 6. Mounting plate; 7. Testing piece; 8. Equipment box; 801. Inflation chamber; 802. Air inlet; 803. Mounting chamber; 804. Air passage; 805. Exhaust passage; 806. Snap-fit ​​chamber; 9. Fixing plate; 10. Track rod; 11. Clamping block; 12. First spring; 13. Moving rod; 14. Moving block; 141. Testing chamber; 15. Testing rod; 16. Second spring; 7. Laser emitter; 18. Laser receiver; 19. Inflatable rod; 20. Movable block; 21. Gear plate; 22. Rotating gear; 221. Vertical rod; 23. Rotating disk; 24. Hose; 25. Inflatable piston; 26. Rocker arm; 27. Sealing plate; 28. Third spring; 29. ​​Connecting rod; 30. Colored block; 31. Ventilation blast whistle; 32. Electromagnet; 33. Magnetic card block; 34. Fourth spring; 35. Electric telescopic rod; 36. Baffle; 37. Relay; 38. Bearing; 39. Axis rod. Detailed Implementation

[0037] This invention provides a technical solution:

[0038] Please see Figure 1-10 :

[0039] Example 1:

[0040] Please see Figure 1-4 :

[0041] A high-precision end face perpendicularity testing device for blind hole axis includes a testing table 1, on which a driving gear 2 and a driven gear 3 are rotatably mounted.

[0042] In this embodiment, the driving gear 2 and the driven gear 3 mesh with each other and have different numbers of teeth. Both the driving gear 2 and the driven gear 3 are rotatably mounted on the testing table 1. In actual use, the number and size of the teeth of the driving gear 2 and the driven gear 3 can be controlled so that the driving gear 2 rotates once and the driven gear 3 rotates multiple times.

[0043] Furthermore, the drive gear 2 is driven by the motor 4 located at the bottom of the testing table 1, and the drive gear 2 rotates under the drive of the motor 4.

[0044] More specifically, motor 4 is powered by an external power source and is controlled by an operator to start.

[0045] A telescopic fixing rod 5 and a mounting plate 6 are sequentially fixedly connected above the driven gear 3. In this embodiment, the telescopic fixing rod 5 can extend and shorten, and its length is fixed after extension and retraction. In actual use, the telescopic fixing rod 5 in this embodiment can also be modified to be electric to facilitate the operation of the operator.

[0046] The mounting plate 6 is equipped with a fixing device for clamping the test piece 7.

[0047] An equipment box 8 is fixedly installed on the testing table 1. In this embodiment, the equipment box 8 is L-shaped.

[0048] Furthermore, such as Figure 3 and Figure 4 As shown, one side of the equipment box 8 is fixedly connected to the testing table 1, and the other side is directly above the mounting plate 6. In this embodiment, the testing device, the warning device, and the subsequent axis rod 39 are all located on the side of the equipment box 8 near the mounting plate 6. The equipment box 8 is fixedly equipped with a testing device for detecting the perpendicularity of the end face of the test piece 7, and a warning device is provided inside the equipment box 8.

[0049] When the testing device detects that test piece 7 is unqualified, the warning device marks test piece 7 and then sounds an alarm to remind the operator.

[0050] Example 2:

[0051] Please see Figure 2 :

[0052] Based on Embodiment 1, the structure of the fixing device in Embodiment 1 is disclosed. The fixing device includes a fixing plate 9 fixedly disposed on the mounting plate 6. In this embodiment, there are two fixing plates 9, which are symmetrically fixedly disposed on the mounting plate 6.

[0053] Furthermore, in this embodiment, two track rods 10 are symmetrically fixed between the two fixing plates 9. In this embodiment, the track rods 10 are cylindrical rods, and two clamping blocks 11 are sleeved on the track rods 10. The clamping blocks 11 are used to clamp one side of the detection piece 7 in an arc shape.

[0054] More specifically, the shape of the clamping block 11 in this embodiment can be selected according to the shape of the detection element 7. If the detection element 7 is square, then two clamping blocks with square inner grooves can be selected during use. This can better cooperate to fix the detection element 7. Furthermore, anti-slip rubber can be provided on the inner side of the arc groove of the clamping block 11, which is more conducive to fixing the detection element 7 and preventing the detection element 7 from falling off or shifting during subsequent rotation.

[0055] Furthermore, in this embodiment, a track rod 10 is symmetrically fixed between the two fixed plates 9, and a clamping block 11 is symmetrically and movably sleeved on the track rod 10. A first spring 12 is fixedly connected between the clamping block 11 and the fixed plate 9, and the detection piece 7 is placed between the two clamping blocks 11.

[0056] More specifically, in this embodiment, the first spring 12 between the two clamping blocks 11 and the fixing plate 9 is a spring of the same model. When the operator places the detection piece 7 between the two clamping blocks 11, the two clamping blocks 11 clamp the detection piece 7 at the center of the mounting plate 6. In actual use, a spring with a larger elastic coefficient can be selected as the first spring 12 so that the detection piece 7 will not shift during subsequent rotation. Alternatively, after the two clamping blocks 11 fix the detection piece 7, the two clamping blocks 11 can be fixed to the mounting plate 6 by means of a pull rod or a buckle known to those skilled in the art, so that the clamping blocks 11 can overcome the centrifugal force during rotation.

[0057] Example 3:

[0058] Please see Figure 6 , Figure 9 and Figure 10 :

[0059] Based on Embodiment 1, the structure of the detection device in Embodiment 1 is disclosed. The detection device includes a movable rod 13 fixedly installed on the bottom side of the equipment box 8. In this embodiment, the movable rod 13 is a square rod.

[0060] The movable block 14 is sleeved on the movable rod 13, and the movable block 14 is movably sleeved on the movable rod 13. The movable block 14 has a detection cavity 141 inside, and a movable detection rod 15 is provided inside the detection cavity 141. The end of the detection rod 15 that is in contact with the detection piece 7 is spherical.

[0061] In this embodiment, the movably extended end of the detection rod 15 is spherical and makes movable contact with the surface of the detection element 7. The detection rod 15 and the end face of the detection element 7 make movable contact. The detection rod 15 and the inner wall of the detection cavity 141 are fixedly connected to a second spring 16. A laser emitter 17 is provided inside the detection cavity 141, and a laser receiver 18 is fixedly provided at the end of the detection rod 15 near the laser emitter 17.

[0062] The laser emitter 17 and laser receiver 18 in this embodiment are devices well known to those skilled in the art. The model number will not be described in this embodiment. The laser receiver 18 in this embodiment is fixedly mounted on the detection rod 15.

[0063] More specifically, when the perpendicularity of the end face of the detection component 7 is uneven, the detection rod 15 will be pushed up by the end face of the detection component 7. At this time, the laser receiver 18 will receive the laser for a shorter time. The laser receiver 18 will judge the time of receiving the laser by its built-in chip.

[0064] When the laser receiver 18 receives the laser for a time exceeding the set range, it indicates that the perpendicularity of the end face of the test piece 7 does not meet the standard.

[0065] At this time, the laser receiver 18 controls the electromagnet 32 ​​to be energized through the built-in chip, and the moving block 14 moves intermittently under the push of the inflation rod 19 to perform multi-point detection on the surface of the detection piece 7, while the inflation rod 19 is inflated in stages by the inflation device.

[0066] Example 4:

[0067] Please see Figure 3-5 :

[0068] Based on Embodiment 3, the structure of the inflation device in Embodiment 3 is disclosed. The inflation device includes a horizontal groove 101 formed on the surface of the testing table 1. A movable block 20 is provided inside the horizontal groove 101. The movable block 20 is connected to a toothed plate 21 that meshes with the drive gear 2. In this embodiment, the toothed plate 21 is fixedly mounted on the movable block 20 by a snap fastener.

[0069] More specifically, when the drive gear 2 rotates, it can drive the toothed plate 21 to move inside the transverse groove 101. The moving toothed plate 21 drives the rotating gear 22 to rotate through meshing. The rotating gear 22 drives the vertical rod 221 and the rotating disk 23 to rotate.

[0070] Furthermore, in this embodiment, the rocker arm 26 and the rotating disk 23 are rotatably configured. The connection between the rocker arm 26 and the rotating disk 23 is located at the eccentric position of the rotating disk 23. When the rotating disk 23 rotates, the rocker arm 26 can drive the inflation piston 25 to move back and forth.

[0071] A rotating gear 22 that meshes with a toothed plate 21 is rotatably mounted on the testing table 1. The rotating gear 22 is fixedly connected to a rotating disk 23 via a vertical rod 221. An inflation chamber 801 is provided inside the equipment box 8. An inflation rod 19 is connected to the inside of the inflation chamber 801 via a hose 24. The inflation chamber 801 is connected to the outside via an air inlet 802. One-way valves are provided inside the air inlet 802 and at the connection between the hose 24 and the inflation chamber 801. The one-way valve inside the air inlet 802 ensures that gas can only enter the inflation chamber 801 through the air inlet 802.

[0072] A one-way valve at the connection between the hose 24 and the inflation chamber 801 ensures that gas can only enter the inflation rod 19 from the inflation chamber 801. An inflation piston 25 is movably installed inside the inflation chamber 801.

[0073] More specifically, in this embodiment, the inner wall of the inflation chamber 801 of the inflation piston 25 forms a sealed space. When the rocker arm 26 drives the inflation piston 25 to move to the left, the gas inside the inflation chamber 801 is squeezed into the inflation rod 19 and the mounting cavity 803.

[0074] When the inflation piston 25 moves to the right, the gas inside the inflation chamber 801 is replenished through the air inlet 802.

[0075] Therefore, in this embodiment, the inflation piston 25 only inflates the inflation rod 19 once per reciprocating motion, which is intermittent inflation. The inflation rod 19 also extends intermittently. It is connected to the inflation piston 25 and the rotating disk 23 through a rocker arm 26. Both ends of the rocker arm 26 are rotatably connected to the inflation piston 25 and the rotating disk 23.

[0076] Example 5:

[0077] Please see Figure 6-7 :

[0078] Based on Embodiment 1, the structure of the warning device in Embodiment 1 is disclosed. The warning device includes an installation cavity 803 opened inside the equipment box 8. The installation cavity 803 is connected to the inflation cavity 801 through an air passage 804, and a one-way valve is provided inside the air passage 804. In this embodiment, the installation cavity 803 is connected to the inflation cavity 801 through the air passage 804.

[0079] When the inflation piston 25 moves to the left, it compresses the gas inside the inflation chamber 801 into the mounting chamber 803.

[0080] Furthermore, in this embodiment, the one-way valve inside the air passage 804 ensures that gas can only enter the mounting cavity 803 from the inflation chamber 801. A sealing plate 27 is movably installed inside the mounting cavity 803, and the sealing plate 27 and the inner wall of the mounting cavity 803 form a sealed space. A third spring 28 is fixedly connected to the sealing plate 27 and the inner wall of the mounting cavity 803. A movable connecting rod 29 is fixedly connected to the sealing plate 27, and the connecting rod 29 is movably locked by a snap-fit ​​device. One end of the connecting rod 29 is fixedly connected to a color block 30 that movably contacts the detection piece 7. The mounting cavity 803 communicates with the outside through the exhaust passage 805. A ventilation whistle 31 is fixedly installed inside the exhaust passage 805, and the exhaust passage 805 is movably blocked by an air-blocking device.

[0081] More specifically, in the initial state, the air-blocking device is blocking the exhaust passage 805, and the connecting rod 29 is locked by the latching device. Therefore, the gas entering the mounting cavity 803 is continuously stored, and the gas inside the mounting cavity 803 continuously accumulates to form a high-pressure state.

[0082] During use, by controlling the size of the mounting cavity 803, the gas inside the mounting cavity 803 can be in a high-pressure state after one inflation. At this time, the subsequent inflation piston 25 cannot continue to squeeze the gas inside the inflation cavity 801 into the mounting cavity 803, and all the gas inside the subsequent inflation cavity 801 enters the inflation rod 19.

[0083] Example 6:

[0084] Please see Figure 7 :

[0085] The latching device includes a latching cavity 806 opened inside the equipment box 8, and an electromagnet 32 ​​electrically connected to the laser receiver 18 is fixedly installed inside the latching cavity 806.

[0086] In this embodiment, the electromagnet 32 ​​is powered by an external power source and is controlled by the built-in chip of the laser receiver 18. The chip inside the laser receiver 18 determines whether the perpendicularity of the end face of the detection piece 7 is qualified by the length of time the laser is received.

[0087] When the perpendicularity of the end face of the test piece 7 is not qualified, the electromagnet 32 ​​is energized, attracting the magnetic card block 33 to move. At this time, the magnetic card block 33 no longer jams the connecting rod 29. Under the action of the high pressure gas inside the mounting cavity 803, once the connecting rod 29 is no longer jammed, the gas drives the sealing plate 27 to move the connecting rod 29 and the coloring block 30 downward. At this time, the coloring block 30 and the end face of the test piece 7 are pressed into contact, marking the test piece 7.

[0088] Furthermore, the coloring block 30 is a sponge block soaked in pigment, and the color inside the coloring block 30 is yellow, making it more eye-catching and easier for operators to notice. The latch cavity 806 is equipped with a magnetic latch block 33 that can be moved to latch the connecting rod 29. A fourth spring 34 is fixedly connected between the magnetic latch block 33 and the electromagnet 32.

[0089] Example 7:

[0090] Please see Figure 7-8 :

[0091] Based on Embodiment 5, the structure of the air-blocking device in Embodiment 5 is disclosed. The air-blocking device includes an electric telescopic rod 35 fixedly installed inside the mounting cavity 803. The electric telescopic rod 35 is fixedly connected to a baffle 36 that movably blocks the exhaust passage 805. The baffle 36 blocks the exhaust passage 805 when it is not subjected to external force. A relay 37 that is in movable contact with the sealing plate 27 is fixedly installed inside the mounting cavity 803. The relay 37 and the electric telescopic rod 35 are electrically connected.

[0092] More specifically, in the initial state, the baffle 36 is blocking the exhaust passage 805. During the downward movement of the sealing plate 27, the relay 37 is squeezed. At this time, the relay 37 controls the electric telescopic rod 35 to be energized for a period of time and then de-energized. The electric telescopic rod 35 drives the baffle 36 to no longer block the exhaust passage 805. At this time, the gas inside the mounting cavity 803 is discharged through the exhaust passage 805, and the ventilation whistle 31 sounds to remind the operator.

[0093] Furthermore, in this embodiment, the equipment box 8 is fixedly provided with an axis rod 39 on the bottom side of the upper part of the mounting plate 6. In this embodiment, the axis rod 39 can be an expansion rod, or it can be a rod with a diameter slightly smaller than the blind hole of the detection component 7.

[0094] A bearing 38 is rotatably mounted on the bottom side of the equipment box 8. The inner ring of the bearing 38 is fixedly connected to an axial rod 39 that extends into the blind hole of the detection piece 7. In this embodiment, the outer ring of the bearing 38 is fixedly connected to the outer wall of the equipment box 8, and the axial rod 39 is fixedly connected to the inner wall of the bearing 38, ensuring that when the axial rod 39 extends into the blind hole, it can rotate together with the detection piece 7.

[0095] Working principle: During the use of this device, the operator first separates the two clamping blocks 11, at which point the first spring 12 is compressed. Then, the detection piece 7 is placed in the middle of the two clamping blocks 11. At this time, the operator slowly releases the clamping blocks 11. Under the action of the first spring 12, the detection piece 7 is loaded and fixed between the two clamping blocks 11.

[0096] Then, the operator adjusts the telescopic fixing rod 5 so that the mounting plate 6 moves the test piece 7 upward, so that the spherical end of the test rod 15 just contacts the end face of the test piece 7, and at the same time, the axis rod 39 extends into the blind hole of the test piece 7, and then the length of the telescopic fixing rod 5 is fixed.

[0097] At this time, the operator turns on the motor 4, which drives the drive gear 2 to rotate. The rotating drive gear 2 drives the driven gear 3 to rotate. The driven gear 3 drives the mounting plate 6 to rotate continuously through the telescopic fixing rod 5. At this time, the detection element 7 on the mounting plate 6 rotates continuously, and the detection rod 15 continuously detects the perpendicularity of a certain linear loop on the end face of the detection element 7.

[0098] During the rotation of the drive gear 2, the toothed plate 21 moves inside the transverse groove 101. The moving toothed plate 21 causes the rotating gear 22 to rotate continuously. The rotating gear 22 drives the rotating disk 23 to rotate continuously through the vertical rod 221. The rotating disk 23 drives the inflation piston 25 inside the inflation chamber 801 to move back and forth continuously through the rocker arm 26.

[0099] When the inflation piston 25 moves to the left, it squeezes the gas inside the inflation chamber 801 into the inflation rod 19 and the mounting chamber 803. When the inflation piston 25 moves to the right, the inflation chamber 801 is replenished with air through the air inlet 802. That is, when the rotating disk 23 rotates once, the inflation rod 19 will be inflated once.

[0100] As the gas inside the inflation rod 19 is continuously filled, the inflation rod 19 extends continuously, driving the moving block 14 to move the detection rod 15 along the moving rod 13. At this time, the detection rod 15 moves intermittently on the end face of the detection piece 7 to detect multiple points on the end face of the detection piece 7.

[0101] As gas continuously enters the mounting cavity 803 from the inflation chamber 801, the mounting cavity 803 is under high pressure. When the perpendicularity of the end face of the test piece 7 is not up to standard, the laser receiver 18 uses its built-in chip to determine the perpendicularity of the end face of the test piece 7 by judging the duration of the received laser. When the duration of the received laser exceeds the set range, the laser receiver 18 controls the electromagnet 32 ​​to be energized through its built-in chip. At this time, the electromagnet 32 ​​becomes magnetic. Under the action of the magnetic force, the magnetic card block 33 moves and no longer jams the connecting rod 29. At this time, under the action of the high-pressure gas inside the mounting cavity 803, the sealing plate 27 is driven to move the connecting rod 29 and the coloring block 30 downward. The coloring block 30 and the end face of the test piece 7 are pressed into contact, and the test piece 7 is colored and marked.

[0102] Simultaneously, as the sealing plate 27 moves downward, it presses the relay 37. At this time, the relay 37 controls the electric telescopic rod 35 to be energized. The electric telescopic rod 35 drives the baffle 36 to no longer block the exhaust duct 805. At this time, the gas inside the installation cavity is released through the exhaust duct. During the release process, the ventilation whistle 31 sounds to remind the operator.

[0103] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision end face perpendicularity testing device for blind hole axis, comprising a testing table (1), characterized in that: The testing table (1) is rotatably equipped with a drive gear (2) and a driven gear (3) that mesh with each other. The drive gear (2) is driven by a motor (4) located at the bottom of the testing table (1). A telescopic fixing rod (5) and a mounting plate (6) are fixedly connected above the driven gear (3). The mounting plate (6) is equipped with a fixing device for clamping the test piece (7). An equipment box (8) is fixedly installed on the testing table (1). A testing device for testing the perpendicularity of the end face of the test piece (7) is fixedly installed on the equipment box (8). An alarm device is installed inside the equipment box (8). When the testing device detects that the test piece (7) is unqualified, the alarm device marks the test piece (7) and then sounds to remind the operator. The detection device includes a movable rod (13) fixedly installed on the bottom side of the equipment box (8), a movable block (14) is movably sleeved on the movable rod (13), the movable block (14) moves intermittently under the push of the inflatable rod (19) to perform multi-point detection on the surface of the detection piece (7), and the inflatable rod (19) is inflated in stages by the inflatable device; The inflation device includes a horizontal groove (101) formed on the surface of the testing table (1). A movable block (20) is provided inside the horizontal groove (101). The movable block (20) is connected to a toothed plate (21) that meshes with a drive gear (2). A rotating gear (22) that meshes with the toothed plate (21) is rotatably provided on the testing table (1). A rotating disk (23) is fixedly connected to the rotating gear (22) through a vertical rod (221). An inflation chamber (801) is provided inside the equipment box (8). The inflation rod (19) is connected to the inside of the inflation chamber (801) through a hose (24). The inflation chamber (801) is connected to the inside of the inflation chamber (801) through an air inlet (80). 2) Connected to the outside, the air inlet (802) and the connection between the hose (24) and the inflation chamber (801) are provided with one-way valves. An inflation piston (25) is movably arranged inside the inflation chamber (801). The inflation piston (25) and the rotating disk (23) are connected by a rocker arm (26). Both ends of the rocker arm (26) are rotatably connected to the inflation piston (25) and the rotating disk (23). The connection between the rocker arm (26) and the rotating disk (23) is located at the eccentric position of the rotating disk (23). When the rotating disk (23) rotates, the inflation piston (25) can be driven to move back and forth left and right by the rocker arm (26). The warning device includes an installation cavity (803) inside the equipment box (8). The installation cavity (803) is connected to the inflation cavity (801) through an air passage (804). A one-way valve is installed inside the air passage (804). A sealing plate (27) is movably installed inside the installation cavity (803). A third spring (28) is fixedly connected to the sealing plate (27) and the inner wall of the installation cavity (803). A movable connecting rod (29) is fixedly connected to the sealing plate (27). The connecting rod (29) is movably locked by a snap-fit ​​device. A colored block (30) that movably contacts the detection piece (7) is fixedly connected to one end of the connecting rod (29). The installation cavity (803) is connected to the outside through an exhaust passage (805). A ventilation blast whistle (31) is fixedly installed inside the exhaust passage (805). The exhaust passage (805) is movably blocked by an air-blocking device. The air-blocking device includes an electric telescopic rod (35) fixedly installed inside the mounting cavity (803). The electric telescopic rod (35) is fixedly connected to a baffle (36) that movably blocks the exhaust passage (805). The baffle (36) blocks the exhaust passage (805) when it is not subjected to external force. A relay (37) that is in movable contact with the sealing plate (27) is fixedly installed inside the mounting cavity (803). The relay (37) is electrically connected to the electric telescopic rod (35).

2. The high-precision end face perpendicularity testing device for blind hole axis as described in claim 1, characterized in that: The fixing device includes a fixing plate (9) fixedly mounted on the mounting plate (6), a track rod (10) symmetrically fixed between the two fixing plates (9), a clamping block (11) symmetrically movably mounted on the track rod (10), a first spring (12) fixedly connected between the clamping block (11) and the fixing plate (9), and the detection piece (7) placed between the two clamping blocks (11).

3. The high-precision end face perpendicularity testing device for blind hole axis as described in claim 2, characterized in that: The detection device includes a detection cavity (141) opened inside the movable block (14). A detection rod (15) is provided inside the detection cavity (141). The detection rod (15) is in contact with the end face of the detection piece (7). A second spring (16) is fixedly connected to the detection rod (15) and the inner wall of the detection cavity (141). A laser emitter (17) is provided inside the detection cavity (141), and a laser receiver (18) is fixedly provided at the end of the detection rod (15) near the laser emitter (17).

4. The high-precision end face perpendicularity testing device for blind hole axis as described in claim 3, characterized in that: The latching device includes a latching cavity (806) opened inside the equipment box (8). An electromagnet (32) electrically connected to the laser receiver (18) is fixedly installed inside the latching cavity (806). A magnetic latch block (33) is provided inside the latching cavity (806) to movably latch the connecting rod (29). A fourth spring (34) is fixedly connected between the magnetic latch block (33) and the electromagnet (32).

5. The high-precision end face perpendicularity testing device for blind hole axis as described in claim 4, characterized in that: The bottom side of the equipment box (8) is rotatably provided with a bearing (38), and the inner ring of the bearing (38) is fixedly connected with an axial rod (39) that extends into the blind hole of the test piece (7).

6. The high-precision end face perpendicularity testing device for blind hole axis as described in claim 5, characterized in that: The end of the detection rod (15) and the detection piece (7) that are in contact with each other is spherical.

7. A high-precision end face perpendicularity testing device for blind hole axis as described in claim 6, characterized in that: The coloring block (30) is a sponge block coated with pigment.

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