A honing device

Abstract

The utility model relates to a kind of honing processing device, wherein honing processing device includes support;For providing the transmission mechanism of the rotation and lifting power required by honing;Honing mechanism, honing mechanism includes shaft sleeve, movable shaft, upper sleeve, upper pressing plate, spring, lower pressing plate, lower sleeve, fixed size gauge, sword shell, tool;Honing mechanism is used to directly contact and hone the inner hole of workpiece;Positioning mechanism, positioning mechanism, positioning mechanism includes positioning plate and multiple sensing devices, positioning plate is installed on support, multiple sensing devices are installed on positioning plate from top to bottom, the vertical height of multiple sensing devices and the multiple steps of fixed size gauge one-to-one dislocation correspondence, so that at least one sensing device can be identified to lower pressing plate all the time.The utility model can be matched by the multiple steps of fixed size gauge and multiple sensing devices, realize the quick processing switching of different honing stages, without replacing fixed size gauge, low in cost and high in processing efficiency.

Description

Technical Field

[0001] This utility model relates to a honing machine, and more particularly to a honing processing device. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] A workpiece needs to be machined with holes. The machining process can be divided into three stages: roughing, finishing, and smoothing, depending on the machining time. The vertical pressure and rotation speed of the honing head need to be set differently for each of these three stages.

[0004] Based on existing solutions, during the switching process between the two processing stages, the processing is stopped in advance by triggering the sliding of a spherical or cylindrical dimension gauge. However, this generally only achieves single-dimensional control and cannot meet the needs of multi-stage processing. Existing methods also involve using laser or eddy current sensors to measure the aperture in real time and adjust processing parameters, but these are costly and have poor environmental adaptability.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a honing processing device that can quickly switch between different honing stages through multiple steps of a fixed-size gauge and one-to-one matching sensing devices, without the need to change the fixed-size gauge, resulting in low cost and high processing efficiency.

[0007] To achieve the above objectives, this utility model discloses a honing apparatus for machining the inner hole of a workpiece, wherein the inner hole to be machined in the workpiece has a first diameter, characterized in that the honing apparatus comprises: support; The transmission mechanism includes a rotary motor, a connecting rod, a first lifting motor, a connecting plate, and a second lifting motor. The rotary motor is mounted on the bracket, and its output end is connected to the connecting rod at the bottom. The first lifting motor is mounted on the bracket, and its output end is connected to the connecting plate. The second lifting motor is mounted on the connecting plate. A honing mechanism, comprising a bushing, a movable shaft, an upper sleeve, an upper pressure plate, a spring, a lower pressure plate, a lower sleeve, a fixed-size gauge, a tool housing, and a cutting tool; The top end of the movable shaft is connected to the output end of the second lifting motor. The top end of the upper sleeve is mounted on the connecting plate. The upper sleeve is sleeved on the upper section of the movable shaft. The top end of the upper sleeve is fixedly connected to the bottom end of the connecting rod. The bushing is sleeved on the lower section of the movable shaft and fixedly connected to the upper sleeve. The lower sleeve is sleeved outside the bushing and positioned below the upper sleeve. The upper pressure plate is sleeved and fixed on the upper sleeve. The lower pressure plate is sleeved and fixed on the lower sleeve. The spring is installed between the upper pressure plate and the lower pressure plate. The dimensional gauge is sleeved on the outside of the bushing and located at the bottom of the lower sleeve. The dimensional gauge includes multiple steps with a gradually increasing diameter from top to bottom. The diameter of the bottommost step is not greater than the first aperture, and the diameter of the topmost step is greater than the first aperture. The cutter housing is fixedly disposed at the bottom of the bushing, the cutter is installed in the cutter housing, and the cutter housing is provided with a cutter hole for the cutter to pass through. The cutter hole is used to allow the cutter to protrude out of the cutter housing when the bottom end of the movable shaft is pressed down to squeeze the cutter outward. The positioning mechanism includes a positioning plate and multiple sensing devices. The positioning plate is mounted on the bracket, and the multiple sensing devices are mounted on the positioning plate from top to bottom. The vertical height of the multiple sensing devices corresponds to the multiple steps of the fixed-size gauge in a staggered manner, so that at least one of the sensing devices can always detect the lower pressure plate.

[0008] As a further description of the above technical solution, the honing mechanism also includes an upper locking nut and a lower locking nut. The upper locking nut is threadedly fixed to the upper sleeve. The top end of the upper pressure plate abuts against the upper locking nut, and the bottom end of the upper pressure plate abuts against the spring. The lower locking nut is threadedly fixed to the lower sleeve. The bottom end of the lower pressure plate abuts against the lower locking nut, and the top end of the lower pressure plate abuts against the spring.

[0009] As a further description of the above technical solution, the plurality of steps include a first step, a second step, and a third step from top to bottom, wherein the thickness of the first step, the second step, and the third step is equal in the vertical direction; the plurality of sensing devices include a first sensor, a second sensor, and a third sensor from top to bottom, wherein the spacing between the first sensor, the second sensor, and the third sensor in the vertical direction is equal.

[0010] As a further description of the above technical solution, the plurality of the sensing devices are arranged in a staggered manner along the horizontal direction.

[0011] As a further description of the above technical solution, the sensing device is configured as a PVDF piezoelectric thin film sensor.

[0012] As a further description of the above technical solution, the end of the movable shaft includes a first annular surface that is inclined from top to bottom toward the axial direction, and the inner wall of the cutter includes a second annular surface that corresponds to the size and position of the first annular surface, and the first annular surface and the second annular surface are fitted together.

[0013] As a further description of the above technical solution, the diameter difference between any two adjacent steps is the same.

[0014] As a further description of the above technical solution, the diameter difference between any two adjacent steps is 0.01 mm.

[0015] Based on the above technical solution, the beneficial effects of this utility model are as follows: This honing device can achieve rapid switching between different honing stages through multiple steps of a fixed-size gauge and one-to-one matching sensors, eliminating the need to change the fixed-size gauge, resulting in low cost and high processing efficiency. Specifically, the tool processes the inner diameter of the inner hole to a certain extent. When switching between two processing stages, the fixed-size gauge changes from abutting the bottom step against the outer wall of the inner hole to abutting the upper-level step with a larger preset hole diameter against the outer wall of the inner hole. Therefore, the entire lower pressure plate descends, and the lower pressure plate that originally corresponded to the upper-level sensor can now correspond to the lower-level sensor. After the new sensor recognizes the data, it can transmit the information to the control center. The control center then recognizes the switching of processing stages and quickly adjusts the honing intensity. This solution is faster and more stable than manual adjustment.

[0016] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a partial schematic diagram of a honing apparatus provided in the embodiments of this specification; Figure 2This is a general schematic diagram of a honing apparatus provided in the embodiments of this specification; Figure 3 This is a schematic cross-sectional view of the honing mechanism of a honing apparatus provided in the embodiments of this specification; Figure 4 This is a schematic diagram of the honing mechanism of a honing processing apparatus provided in the embodiments of this specification; In the picture: 100, workpiece; 200, inner hole; 1. Bracket; 2. Transmission mechanism; 21. Rotary motor; 22. Connecting rod; 23. First lifting motor; 24. Connecting plate; 25. Second lifting motor; 3. Honing mechanism; 31. Bushing; 32. Movable shaft; 321. First annular surface; 33. Upper sleeve; 34. Upper pressure plate; 35. Spring; 36. Lower pressure plate; 37. Lower sleeve; 38. Fixed dimension gauge; 381. First step; 382. Second step; 383. Third step; 39. Tool housing; 310. Tool; 3101. Second annular surface; 311. Upper locking nut; 312. Lower locking nut; 4. Positioning mechanism; 41. Positioning plate; 42. Sensing device; 43. First sensor; 44. Second sensor; 45. Third sensor. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0021] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0022] Please see Figure 1-4 This embodiment provides a honing apparatus for machining the inner hole 200 of a workpiece 100, wherein the inner hole 200 to be machined in the workpiece 100 has a first diameter. The honing apparatus comprises: Bracket 1; The transmission mechanism 2 includes a rotary motor 21, a connecting rod 22, a first lifting motor 23, a connecting plate 24, and a second lifting motor 25. The rotary motor 21 is mounted on the bracket 1, and its output end is connected to the connecting rod 22 at the bottom. The first lifting motor 23 is mounted on the bracket 1, and its output end is connected to the connecting plate 24. The second lifting motor 25 is mounted on the connecting plate 24. Honing mechanism 3, which includes bushing 31, movable shaft 32, upper sleeve 33, upper pressure plate 34, spring 35, lower pressure plate 36, lower sleeve 37, fixed size gauge 38, blade shell 39, and blade 310; The top end of the movable shaft 32 is connected to the output end of the second lifting motor 25. The top end of the upper sleeve 33 is mounted on the connecting plate 24. The upper sleeve 33 is sleeved on the upper section of the movable shaft 32. The top end of the upper sleeve 33 is fixedly connected to the bottom end of the connecting rod 22. The bushing 31 is sleeved on the lower section of the movable shaft 32 and fixedly connected to the upper sleeve 33. The lower sleeve 37 is sleeved outside the bushing 31 and located below the upper sleeve 33. The upper pressure plate 34 is sleeved and fixed on the upper sleeve 33. The lower pressure plate 36 is sleeved and fixed on the lower sleeve 37. The spring 35 is installed between the upper pressure plate 34 and the lower pressure plate 36. The dimensional gauge 38 is sleeved on the outside of the bushing 31 and located at the bottom of the lower sleeve 37. The dimensional gauge 38 includes multiple steps with a gradually increasing diameter from top to bottom. The diameter of the bottommost step is not greater than the first aperture, and the diameter of the topmost step is greater than the first aperture. The blade housing 39 is fixedly disposed at the bottom of the bushing 31, and the blade 310 is installed in the blade housing 39. The blade housing 39 is provided with a blade hole for passing the blade. The blade hole is used to allow the blade 310 to protrude out of the blade housing 39 when the bottom end of the movable shaft 32 is pressed down to squeeze the blade 310 outward. The positioning mechanism 4 includes a positioning plate 41 and a plurality of sensing devices 42. The positioning plate 41 is mounted on the bracket 1, and the plurality of sensing devices 42 are mounted on the positioning plate 41 from top to bottom. The vertical height of the plurality of sensing devices 42 corresponds one-to-one with the plurality of steps of the dimension gauge 38, so that at least one of the sensing devices 42 can always identify the lower pressure plate 36.

[0023] Based on the above scheme, taking the machining of a workpiece 100 with a vertically penetrating inner hole 200 at the top as an example, firstly, the operator can fix the workpiece 100 in the middle position on the bracket 1, and place the inner hole 200 of the workpiece 100 facing the top, and position it in conjunction with the position of the honing mechanism 3, so that the tool housing 39 and the cutting tool 310 are aligned with the position of the inner hole 200, so that they are on the same axis as the inner hole 200. Then, the transmission mechanism 2 and the honing mechanism 3 are started to run. Among them, the first lifting motor 23 drives the connecting plate 24 to move up and down, which drives the second lifting motor 25 and the upper sleeve 33 installed on the connecting plate 24 to move up and down. The rotary motor 21 is turned on and drives the connecting rod 22 at the bottom output end to rotate around the axis, so that the connecting rod 22 drives the upper sleeve 33 at the bottom to rotate, so that the upper sleeve 33 drives the bushing 31 to rotate, and the bushing 31 drives the tool housing 39 and the cutting tool 310 at the bottom end to rotate.

[0024] In other words, driven by the aforementioned transmission mechanism 2, the connecting plate 24, bushing 31, and upper sleeve 33 rotate and move up and down synchronously. The movable shaft 32 moves up and down relative to the bushing 31 based on the connecting plate 24. Since the bottom end of the bushing 31 is equipped with a cutter shell 39 and a cutting tool 310, the movable shaft 32 can squeeze the cutting tool 310 out of the cutter head after being pressed down. Therefore, the cutting tool 310 grinds the inner wall of the inner hole 200 by inserting the cutting tool shell 39 into the inner hole 200 to be processed and rotating it.

[0025] Specifically, when the cutter housing 39 and the cutter 310 are inserted into the inner hole 200 to be machined, under the action of the spring 35, the lower sleeve 37 drives the end gauge 38 to descend. Due to the small diameter of the inner hole 200, one of the steps with a larger diameter on the gauge 38 first abuts against the top of the inner hole 200. The bushing 31 continues to descend and pushes the cutter 310 out of the cutter housing 39, thus honing the inner wall of the inner hole 200 during rotation. During the above process, the upper sleeve 33 and the bushing 31 actually undergo misalignment with the lower sleeve 37 and the gauge 38, causing the top surface of the lower pressure plate 36 on the lower sleeve 37 and the bottom surface of the upper pressure plate 34 on the upper sleeve 33 to compress the spring 35 held in the middle.

[0026] Furthermore, in practice, based on the position where one of the steps with a larger diameter on the aforementioned fixed-size gauge 38 first abuts against the top of the inner hole 200, the lowest position of the lower pressure plate 36 is restricted, so that a sensor 42 installed at the uppermost position on the positioning plate 41 reads the vertical position of its lower pressure plate 36. Then, the sensor 42 sends the corresponding information to the control center and sends a default control command to the lifting motor 2 and the rotary motor 22, so that its tool 310 can hone the inner hole 200 under the preset speed and downward pressure.

[0027] When honing reaches a certain level, the diameter of the inner hole 200 expands. Therefore, once the inner hole 200 is larger than the corresponding step on the dimension gauge 38 at its original limiting position, the dimension gauge 38 can descend deeper into the inner hole 200, allowing the next step on the dimension gauge 38 with a larger diameter to be locked at the top of the inner hole 200 again. Similarly, at this time, a sensor 42 mounted on the positioning plate 41 at the next uppermost position reads the vertical position of its lower pressure plate 36. Then, the sensor 42 sends the corresponding information to the control center and sends a default control command to the transmission mechanism 2, enabling its tool 310 to hone the inner hole 200 at another preset rotational speed and downward pressure.

[0028] Similarly, based on the processing depth and the steps of the corresponding fixed-size gauge 38 and the sensing device 42, multi-level positioning can be achieved to change the honing speed and downward pressure. The switching is fully automatic in the above process, requiring only the pre-installed fixed-size gauge 38 and sensing device 42.

[0029] Based on the above technical solution, rapid switching between different honing stages can be achieved through multiple steps of the dimension gauge 38 and one-to-one matching sensing devices 42, without the need to replace the dimension gauge 38, resulting in low cost and high processing efficiency. Specifically, the tool 310 processes the inner diameter of the inner hole 200 to a certain extent. When switching between two processing stages, the dimension gauge 38 changes from abutting the bottom step and the outer wall of the inner hole 200 to abutting the upper-level step with a larger preset hole diameter and the outer wall of the inner hole 200. Therefore, the entire lower pressure plate 36 descends, and the lower pressure plate 36 that originally corresponded to the upper-level sensing device 42 can now correspond to the lower-level sensing device 42. After the new sensing device 42 recognizes the data, it can transmit the information to the control center. The control center then recognizes the switching of processing stages and makes rapid adjustments to the honing intensity. Compared with manual adjustment, the above solution is faster and more stable.

[0030] In one embodiment, the honing mechanism 3 further includes an upper locking nut 311 and a lower locking nut 312. The upper locking nut 311 is threaded onto the upper sleeve 33. The top end of the upper pressure plate 34 abuts against the upper locking nut 311, and the bottom end of the upper pressure plate 34 abuts against the spring 35. The lower locking nut 312 is threaded onto the lower sleeve 37. The bottom end of the lower pressure plate 36 abuts against the lower locking nut 312, and the top end of the lower pressure plate 36 abuts against the spring 35. The use of the upper locking nut 311 and the lower locking nut 312 allows for flexible adjustment of the vertical position of the upper pressure plate 34 and the lower pressure plate 36, and facilitates quick installation.

[0031] In one embodiment, the plurality of steps include a first step 381, a second step 382, ​​and a third step 383 from top to bottom, wherein the first step 381, the second step 382, ​​and the third step 383 have equal thickness in the vertical direction; the plurality of sensing devices 42 include a first sensor 43, a second sensor 44, and a third sensor 45 from top to bottom, wherein the first sensor 43, the second sensor 44, and the third sensor 45 are spaced at equal intervals in the vertical direction. Specifically, the diameter of the first step 381 is 50.025mm, the diameter of the second step 382 is 50.015mm, and the diameter of the third step 383 is 50.005mm. The target machining diameter of the inner hole 200 is 50mm. Based on the above three-stage machining, the diameter difference between any two adjacent steps is 0.01mm. The roughing, finishing and smoothing of the inner hole 200 can be achieved in three parts, which is fast and effective. The diameter difference between any two adjacent steps is the same, so that the corresponding sensing devices 42 are also equidistantly arranged vertically.

[0032] In this embodiment, the sensing device 42 is a PVDF piezoelectric film sensor. PVDF piezoelectric film sensors are a mature solution in the industry, utilizing the piezoelectric effect to identify the lower pressure plate 36, offering high efficiency and low cost. In this embodiment, multiple sensing devices 42 are arranged in a staggered manner along the horizontal direction. Specifically, considering the approximately cylindrical shape of the PVDF piezoelectric film sensor, the staggered arrangement allows for a higher installation density within a limited space, and the vertical distance between two adjacent PVDF piezoelectric film sensors does not need to be the entire diameter of a complete PVDF piezoelectric film sensor.

[0033] Furthermore, the end of the movable shaft 32 includes a first annular surface 321 that slopes downwards along the axial direction, and the inner wall of the cutter 310 includes a second annular surface 3101 that corresponds to the size and position of the first annular surface 321. The first annular surface 321 and the second annular surface 3101 are fitted together. During operation, the movable shaft 32 moves up and down under the drive of the second lifting motor 25. During the downward pushing process, the first annular surface 321 and the second annular surface 3101 undergo misalignment and friction. Due to the limited vertical space of the cutter housing 39, the cutter 310 extends horizontally beyond the cutting edge under the push of the inclined plane and performs compression honing on the inner wall of the inner hole 200.

[0034] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0035] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0036] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A honing apparatus for machining the inner hole of a workpiece, wherein, The workpiece to be machined has an inner hole with a first diameter, characterized in that the honing device includes: support; The transmission mechanism includes a rotary motor, a connecting rod, a first lifting motor, a connecting plate, and a second lifting motor. The rotary motor is mounted on the bracket, and its output end is connected to the connecting rod at the bottom. The first lifting motor is mounted on the bracket, and its output end is connected to the connecting plate. The second lifting motor is mounted on the connecting plate. A honing mechanism, comprising a bushing, a movable shaft, an upper sleeve, an upper pressure plate, a spring, a lower pressure plate, a lower sleeve, a fixed-size gauge, a tool housing, and a cutting tool; The top end of the movable shaft is connected to the output end of the second lifting motor. The top end of the upper sleeve is mounted on the connecting plate. The upper sleeve is sleeved on the upper section of the movable shaft. The top end of the upper sleeve is fixedly connected to the bottom end of the connecting rod. The bushing is sleeved on the lower section of the movable shaft and fixedly connected to the upper sleeve. The lower sleeve is sleeved outside the bushing and positioned below the upper sleeve. The upper pressure plate is sleeved and fixed on the upper sleeve. The lower pressure plate is sleeved and fixed on the lower sleeve. The spring is installed between the upper pressure plate and the lower pressure plate. The dimensional gauge is sleeved on the outside of the bushing and located at the bottom of the lower sleeve. The dimensional gauge includes multiple steps with a gradually increasing diameter from top to bottom. The diameter of the bottommost step is not greater than the first aperture, and the diameter of the topmost step is greater than the first aperture. The cutter housing is fixedly disposed at the bottom of the bushing, the cutter is installed in the cutter housing, and the cutter housing is provided with a cutter hole for the cutter to pass through. The cutter hole is used to allow the cutter to protrude out of the cutter housing when the bottom end of the movable shaft is pressed down to squeeze the cutter outward. The positioning mechanism includes a positioning plate and multiple sensing devices. The positioning plate is mounted on the bracket, and the multiple sensing devices are mounted on the positioning plate from top to bottom. The vertical height of the multiple sensing devices corresponds to the multiple steps of the fixed-size gauge in a staggered manner, so that at least one of the sensing devices can always detect the lower pressure plate.

2. The honing apparatus according to claim 1, characterized in that: The honing mechanism further includes an upper locking nut and a lower locking nut. The upper locking nut is threadedly fixed to the upper sleeve. The top end of the upper pressure plate abuts against the upper locking nut, and the bottom end of the upper pressure plate abuts against the spring. The lower locking nut is threadedly fixed to the lower sleeve. The bottom end of the lower pressure plate abuts against the lower locking nut, and the top end of the lower pressure plate abuts against the spring.

3. The honing apparatus according to claim 1, characterized in that: The plurality of steps include a first step, a second step, and a third step from top to bottom, wherein the first step, the second step, and the third step have equal thickness in the vertical direction; the plurality of sensing devices include a first sensor, a second sensor, and a third sensor from top to bottom, wherein the first sensor, the second sensor, and the third sensor are spaced at equal intervals in the vertical direction.

4. The honing apparatus according to claim 1, characterized in that: The multiple sensing devices are arranged in a staggered manner along the horizontal direction.

5. The honing apparatus according to claim 1, characterized in that: The sensing device is configured as a PVDF piezoelectric thin film sensor.

6. The honing apparatus according to claim 1, characterized in that: The end of the movable shaft includes a first annular surface that is axially inclined from top to bottom, and the inner wall of the cutter includes a second annular surface that corresponds to the size and position of the first annular surface. The first annular surface and the second annular surface are fitted together.

7. The honing apparatus according to claim 1, characterized in that: The diameter difference between any two adjacent steps is the same.

8. The honing apparatus according to claim 7, characterized in that: The diameter difference between any two adjacent steps is 0.01 mm.

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