In-process measuring device and horizontal grinding machine

Abstract

The present application relates to the field of machine tool, and provide a kind of in-machine measuring device and horizontal grinding machine.In-machine measuring device includes base;Measuring component base, movably disposed on base;Driving assembly, for driving measuring component base reciprocating motion along first linear direction;Probe component, installed on measuring component base, probe component includes probe mounting seat, rotary probe seat and probe needle, rotary probe seat is rotatably connected to probe mounting seat, probe needle is arranged on rotary probe seat;Rotary probe seat is configured to rotate around rotation axis, to make probe needle switch between at least two different measurement orientations.This in-machine measuring device can measure the inner diameter, end face of workpiece, can also measure outer diameter, end face;High motion accuracy, accurate repeat positioning, avoid the positioning deviation caused by unstable pressure in traditional hydraulic drive mode;Improve the accuracy and reliability of measurement result, reduce the error of manual measurement.

Description

Technical Field

[0001] This invention relates to the field of machine tools, and provides an in-machine measuring device and a horizontal grinding machine. Background Technology

[0002] With the continuous development of CNC machine tool technology, the automation level of CNC machine tools plays an increasingly important role in the manufacturing industry. To achieve high-precision in-machine measurement, reduce manual intervention, and improve machine tool efficiency, horizontal grinding machines are gradually being equipped with in-machine measurement devices, integrating machining and measurement functions. This not only solves the problem of offline measurement but also becomes one of the important development directions of modern advanced manufacturing technology, providing crucial support for the digital transformation and intelligent upgrading of the manufacturing industry.

[0003] However, most existing horizontal internal and external cylindrical grinding machines lack on-machine measurement devices. Therefore, measurement solutions often rely on manual measurement using calipers or offline measurement on a coordinate measuring machine (CMM) after the workpiece has been removed. This approach involves high levels of manual intervention and introduces significant errors, resulting in inaccurate measurement results. Offline workpiece measurement not only reduces the grinding machine's efficiency but also decreases the machine tool's integration, thus impacting overall production efficiency.

[0004] While some horizontal grinding machines are indeed equipped with in-machine measuring devices, their main structural form is the hydraulic cylinder swing type. This structure uses hydraulic oil at a certain pressure to push the swing arm probe for measurement, and then retracts it by hydraulic pressure after the measurement is completed. However, this structure has some problems during the measurement process. For example, it requires frequent extension and retraction during measurement, and the instability of hydraulic pressure may cause the swing arm probe to not extend fully, resulting in low repeatability accuracy of the outer diameter measurement, which in turn affects the accuracy of the workpiece measurement results. In addition, the existing hydraulic cylinder swing measuring structure has limited functionality, mainly limited to workpiece end face measurement, and cannot fully realize fully automated workpiece measurement. This part of the work still needs to be done manually. Summary of the Invention

[0005] This invention provides an in-machine measurement device to address the shortcomings of low measurement accuracy and poor comprehensiveness of workpieces in related technologies.

[0006] This invention provides a horizontal grinding machine.

[0007] A first aspect of the present invention provides an in-machine measurement device, comprising: Base; The measuring component base is movably mounted on the base; A driving component is used to drive the base of the measuring component to reciprocate along a first linear direction; A probe assembly is mounted on the base of the measuring component. The probe assembly includes a probe mounting base, a rotating probe base, and a probe. The rotating probe base is rotatably connected to the probe mounting base, and the probe is disposed on the rotating probe base. The rotating probe holder is configured to rotate about a rotation axis so that the probe can switch between at least two different measurement orientations.

[0008] According to one embodiment of the present invention, it further includes: A grating ruler is disposed on the base along the first straight line direction; A reading head, mounted on the base of the measuring component and cooperating with the grating ruler, is used to provide closed-loop position feedback on the movement of the base of the measuring component.

[0009] According to one embodiment of the present invention, the probe assembly further includes: A rotating shaft is connected to the rotating probe base, and the rotating shaft is rotatably mounted in the probe mounting base.

[0010] According to one embodiment of the present invention, a locking mechanism is further included for fixing the rotating shaft at a preset rotation position; The locking mechanism includes: Plum blossom lock nut; A spring plate, driven by the plum blossom locking nut, abuts against the rotating shaft to lock the rotating shaft.

[0011] According to one embodiment of the present invention, the probe assembly further includes: A limiting stud is provided on the rotating probe base; A position sensor is disposed within the probe mounting base; When the rotating probe holder rotates to a predetermined angle, the limiting stud contacts the limiting surface of the probe mounting base, and the position sensor detects that the rotating probe holder has reached the predetermined angle.

[0012] According to one embodiment of the present invention, the rotating probe holder is configured to rotate 90 degrees to switch the probe between a first position and a second position: In the first position, the axis of the probe is parallel to the axis of the workpiece, and is used to measure the inner diameter or end face of the workpiece. In the second position, the axis of the probe is perpendicular to the axis of the workpiece, and is used to measure the outer diameter or end face of the workpiece.

[0013] According to one embodiment of the present invention, a guide rail is provided on the base, and a slider that cooperates with the guide rail is provided on the measuring component base. The slider is guided along the guide rail to realize the reciprocating motion of the measuring component base.

[0014] According to one embodiment of the present invention, it further includes: A protective housing is fixed to the base; A flexible protective cover, one end of which is connected to the protective housing and the other end of which is connected to the measuring component base or the probe assembly, to protect the internal components when the measuring component base reciprocates.

[0015] A second aspect of the present invention provides a horizontal grinding machine, comprising: Machine tool body; The grinding wheel holder is rotatably mounted on the machine tool body; At least one grinding wheel spindle is mounted on the grinding wheel holder; As described above, the in-machine measuring device is also mounted on the grinding wheel frame; The grinding wheel head can be rotated to switch between the machining position where the grinding wheel spindle is aligned with the workpiece and the measurement position where the in-machine measuring device is aligned with the workpiece.

[0016] According to one embodiment of the present invention, the horizontal grinding machine is a horizontal internal and external cylindrical grinding machine, and further includes: The headstock and tailstock are mounted on the machine tool body and used for clamping workpieces; The grinding wheel frame is movable relative to the machine tool body along the first axis direction; The headstock and tailstock are movable relative to the machine tool body along a second axis direction perpendicular to the first axis.

[0017] According to the in-machine measuring device provided in the first aspect of the present invention, the rotation function of the rotating probe holder allows the probe to switch between two key orientations, enabling the measurement of both the inner diameter and end face of the workpiece, as well as the outer diameter and end face. It is compatible with both chuck grinding and double-center grinding, solving the problems of limited functionality and measurement range of traditional measuring devices and meeting diverse workpiece measurement needs. The measuring component base, through the cooperation of the guide rail slider and the precise control of the drive component, achieves high motion accuracy and accurate repeatability, avoiding positioning deviations caused by unstable pressure in traditional hydraulic drives. The precise rotation and positioning of the rotating probe holder ensures consistent measurement references for the probe in different orientations, significantly improving the accuracy and reliability of measurement results and reducing errors from manual measurement. This in-machine measuring device is integrated into the machine tool grinding wheel head, allowing direct in-machine measurement after machining without disassembling the workpiece or transferring it to offline measuring equipment, reducing process flow time. The convenient switching of probe orientations eliminates the need to replace the probe or adjust the machine tool structure, significantly simplifying the measurement process and improving the overall production efficiency of the machine tool.

[0018] According to a second aspect of the present invention, the horizontal grinding machine integrates the in-machine measuring device onto a rotatable grinding wheel head, sharing the same motion carrier with the grinding wheel spindle. After workpiece machining, there is no need to disassemble or transfer it to offline equipment; in-machine measurement can be performed directly by rotating the grinding wheel head. This significantly shortens the machining-measurement cycle, reduces process flow time, and improves the overall production efficiency of the horizontal grinding machine, making it particularly suitable for automated production lines and batch processing scenarios. The in-machine measuring device and the grinding wheel spindle are mounted on the same grinding wheel head, sharing the high-precision mounting reference provided by the machine tool body. This eliminates measurement errors caused by workpiece clamping, unloading, transfer, or differences in references between different equipment, allowing the measurement results to directly reflect the actual machining accuracy of the workpiece and ensuring the stability and consistency of product quality. The rotation switching of the grinding wheel head and the triggering and resetting of the measuring device can be automatically controlled by the machine tool's CNC system, eliminating the need for operators to frequently manually adjust the position of the measuring device or change measuring tools. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic perspective view of the horizontal grinding machine provided by the present invention.

[0021] Figure 2 This is a schematic perspective view of the in-machine measuring device provided by the present invention.

[0022] Figure 3 This is a schematic perspective view of the internal structure of the in-machine measuring device provided by the present invention.

[0023] Figure 4 This is a schematic top view of the probe assembly provided by the present invention.

[0024] Figure 5 yes Figure 4 A schematic cross-sectional view along the AA direction.

[0025] Figure 6 This is a schematic front view of the probe assembly provided by the present invention.

[0026] Figure 7 yes Figure 6 A magnified view of a section at point B.

[0027] Figure 8 This is a schematic perspective view of a horizontal grinding machine provided by the present invention measuring the inner diameter of a workpiece in chuck grinding mode.

[0028] Figure 9 This is a schematic perspective view of the horizontal grinding machine provided by the present invention measuring the outer diameter of a workpiece in a double-center grinding mode.

[0029] Figure label: 10. In-machine measuring device; 100. Base; 102. Measuring component base; 104. Drive assembly; 106. Probe assembly; 108. Probe mounting base; 110. Rotating probe holder; 112. Probe; 114. Grating ruler; 116. Reading head; 118. Rotating shaft; 120. Torx lock nut; 122. Spring plate; 124. Limit stud; 126. Position sensor; 128. Guide rail; 130. Slider; 132. Flexible anti-locking device. 134. Protective cover; 136. Machine tool body; 138. Grinding wheel head; 140. Grinding wheel spindle; 141. Headstock; 142. Tailstock; 144. Upper cover plate; 146. Side cover plate; 148. Lower cover plate; 150. Protective cover plate; 152. Limit block seat; 154. Limit block; 156. Guide rail pressure bar; 158. Bearing spacer; 160. Locking nut; 162. Angular contact bearing; 164. Locking seat; 166. Bearing cover; 168. Signal indicator plate. Detailed Implementation

[0030] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0031] like Figures 1 to 9 As shown, a first aspect of the present invention provides an in-machine measurement device 10, comprising: Base 100; The measuring component base 102 is movably mounted on the base 100; Drive component 104 is used to drive the measuring component base 102 to reciprocate along a first linear direction; Probe assembly 106 is mounted on measurement assembly base 102. Probe assembly 106 includes: Probe mounting base 108; The rotating probe holder 110 is rotatably connected to the probe mounting base 108; The probe 112 is mounted on the rotating probe holder 110; The rotating probe holder 110 is configured to rotate about the axis of the rotation axis 118 so that the probe 112 can switch between at least two different measurement orientations.

[0032] According to the in-machine measuring device 10 provided in the first aspect embodiment of the present invention, the rotation function of the rotating probe holder 110 enables the probe 112 to switch between two key orientations, allowing it to measure both the inner diameter and end face of the workpiece, as well as the outer diameter and end face. It is compatible with both chuck grinding and double-center grinding, solving the problems of limited functionality and measurement range of traditional measuring devices, and meeting diverse workpiece measurement needs. The measuring component base 102, through the cooperation of the guide rail 128 and slider 130 and the precise control of the drive component 104, achieves high motion accuracy and accurate repeatability, avoiding positioning deviations caused by unstable pressure in traditional hydraulic drive methods. The precise rotation and positioning of the rotating probe holder 110 ensures that the measurement reference of the probe 112 is consistent in different orientations, significantly improving the accuracy and reliability of the measurement results and reducing errors from manual measurement. The in-machine measurement device 10 is integrated on the grinding wheel head 136 of the machine tool. After processing, in-machine measurement can be performed directly without disassembling the workpiece or transferring it to offline measurement equipment, which reduces the process flow time. The probe orientation switching is convenient, without the need to replace the probe or adjust the structure of the horizontal grinding machine, which significantly simplifies the measurement process and improves the overall production efficiency of the horizontal grinding machine.

[0033] See Figures 1 to 9 The in-machine measuring device 10 provided in the first aspect of the present invention achieves multi-directional, high-precision in-machine measurement of workpieces through the coordinated design of movable measuring components and rotatable probes.

[0034] The base 100 is the fundamental load-bearing component of the entire measuring device, stably supporting components such as the measuring assembly base 102 and the drive assembly 104, thus preventing accuracy deviations caused by vibration during measurement. The base 100's external structure is adapted to the installation space of the machine tool grinding wheel head 136, and it is firmly fixed to the grinding wheel head 136 with screws and other fasteners, ensuring stable relative position with the horizontal grinding machine and providing a fundamental guarantee for measurement accuracy.

[0035] The measuring component base 102 is movably mounted on the base 100. Its bottom is connected to the base 100 via a guide rail 128 and a slider 130. The guide rail 128 is fixed to the base 100 along a first straight line (vertical). The slider 130 is fixedly connected to the measuring component base 102, ensuring smooth reciprocating motion of the measuring component base 102 along a preset straight trajectory. The measuring component base 102 has a compact structure, capable of supporting the probe assembly 106 and following the movement of the drive assembly 104. During movement, there is no jamming or deviation, ensuring the accuracy of the probe 112's movement.

[0036] The drive assembly 104 is fixedly mounted on the base 100, providing power for the reciprocating motion of the measuring assembly base 102. It adopts a motor-driven lead screw seat transmission method, which ensures precise power transmission and rapid response. The drive assembly 104 is electrically connected to the CNC system of the horizontal grinding machine. It can receive control signals according to measurement requirements and adjust the movement speed, stroke, and position of the measuring assembly base 102 to achieve automated and precise control and avoid errors caused by manual operation.

[0037] The probe assembly 106 is the core component of the measurement. The probe mounting base 108 is fixed to the measurement assembly base 102 by screws and moves synchronously with the measurement assembly base 102. The rotating probe holder 110 is rotatably connected to the probe mounting base 108 via a rotating shaft 118. The rotating shaft 118 is mounted with bearings to ensure smooth rotation and low friction. The axis of the rotating shaft 118 coincides with the central axis of the probe mounting base 108 to ensure rotational accuracy.

[0038] The probe 112 is fixedly mounted on the rotating probe holder 110 and rotates together with the rotating probe holder 110. The rotating probe holder 110 can rotate around the axis of the rotating shaft 118, enabling the probe 112 to switch between two key measurement positions. The rotation angle of the rotating probe holder 110 is positioned by both mechanical limit and sensor detection, ensuring accurate and reliable position switching.

[0039] According to one embodiment of the present invention, it further includes: A grating ruler 114 is set on the base 100 along the first straight line direction; The reading head 116 is mounted on the measuring component base 102 and cooperates with the grating ruler 114 to provide closed-loop position feedback for the movement of the measuring component base 102.

[0040] In one embodiment of the present invention, the grating ruler 114 is fixedly installed on the side of the base 100 along the first straight line direction, and its length covers the entire movement stroke of the measuring component base 102, ensuring that the reading head 116 can always cooperate with the grating ruler 114 during the reciprocating motion of the measuring component base 102.

[0041] The reading head 116 is fixed to the measuring component base 102 via a reading head 116 mounting seat, and is in close contact with the measuring surface of the grating ruler 114 with a small and uniform gap to ensure the accuracy of signal acquisition. The reading head 116 is electrically connected to the CNC system of the horizontal grinding machine, transmitting the acquired position signal to the CNC system in real time. The CNC system adjusts the operation of the drive component 104 according to the feedback signal, realizing closed-loop control of the movement of the measuring component base 102, ensuring that its movement position accurately meets the preset requirements.

[0042] The cooperation between the grating ruler 114 and the reading head 116 provides high-precision position feedback, which greatly reduces the movement position error of the measuring component base 102, avoids the positioning deviation caused by unstable pressure in the traditional hydraulic drive method, significantly improves the repeatability of the probe 112, and thus ensures the accuracy of the workpiece measurement results.

[0043] According to one embodiment of the present invention, the probe assembly 106 further includes: The rotating shaft 118 is connected to the rotating probe holder 110, and the rotating shaft 118 is rotatably mounted in the probe mounting base 108.

[0044] In one embodiment of the present invention, the lower end of the rotating shaft 118 is fixedly connected to the rotating probe seat 110, and the two rotate synchronously. The upper end of the rotating shaft 118 extends into the probe mounting seat 108 and is rotatably mounted in the probe mounting seat 108 by means of an angular contact bearing 162. The bearing arrangement makes the rotation of the rotating shaft 118 smoother and reduces friction.

[0045] A bearing spacer 158 and a locking nut 160 are provided between the rotating shaft 118 and the probe mounting base 108 to fix the position of the bearing and ensure the installation accuracy and stability of the rotating shaft 118. The axis of the rotating shaft 118 coincides with the rotation axis of the rotating probe base 110, ensuring that the rotating probe base 110 will not be eccentric or tilted when rotating, and ensuring the accurate movement trajectory of the probe 112.

[0046] The rotating shaft 118 is made of high-strength, wear-resistant metal material, which can withstand long-term rotation and impact during measurement, thus extending its service life. The connection between the rotating shaft 118 and the rotating probe holder 110 is firm and secure, ensuring accurate power transmission. The rotating probe holder 110 can rotate synchronously and smoothly with the rotating shaft 118.

[0047] The rotating shaft 118 enables the rotating probe holder 110 to rotate around the axis, thereby driving the probe 112 to switch between different measurement positions. This breaks the limitation of traditional measuring devices that can only measure a single feature, allowing the on-machine measuring device 10 to meet the measurement needs of the outer diameter, inner diameter and end face of the workpiece under different grinding methods, thus expanding the measurement function.

[0048] According to one embodiment of the present invention, a locking mechanism is further included for fixing the rotating shaft 118 at a preset rotation position; Locking mechanisms include: 120mm plum blossom lock nut; Spring plate 122, driven by plum blossom locking nut 120, abuts against rotating shaft 118 to lock rotating shaft 118.

[0049] In one embodiment of the present invention, a locking mechanism is installed on the top of the probe mounting base 108, and a plum blossom locking nut 120 is threaded onto the locking seat 164, which is fixedly installed on the bearing cover 166. A spring plate 122 is disposed between the locking seat 164 and the rotating shaft 118, and has an annular or arc-shaped structure, which can fit tightly against the outer surface of the rotating shaft 118.

[0050] When it is necessary to lock the rotating shaft 118, manually tighten the Phillips head nut 120. The Phillips head nut 120 pushes the spring plate 122 downward, causing the spring plate 122 to elastically deform and tightly abut against the outer surface of the rotating shaft 118. The frictional force fixes the rotating shaft 118 in the current rotational position, preventing it from rotating during measurement. When it is necessary to change the position of the probe 112, manually loosen the Phillips head nut 120. The spring plate 122 automatically resets under its own elasticity, disengages from the rotating shaft 118, and is unlocked, allowing the rotating shaft 118 to rotate freely.

[0051] The locking mechanism can firmly fix the rotating shaft 118 in the preset position, preventing the probe 112 from shifting its position due to vibration or external force during the measurement process, ensuring that the probe 112 is always in the accurate measurement position, thereby guaranteeing the accuracy and consistency of the measurement results.

[0052] According to one embodiment of the present invention, the probe assembly 106 further includes: A limiting stud 124 is mounted on the rotating probe base 110; Position sensor 126 is installed inside probe mounting base 108; When the rotating probe holder 110 rotates to a predetermined angle, the limiting stud 124 contacts the limiting surface of the probe mounting base 108, and the position sensor 126 detects that the rotating probe holder 110 has reached the predetermined angle.

[0053] In one embodiment of the present invention, a limiting stud 124 is fixedly installed on the side of the rotary probe holder 110, extending radially along the rotary probe holder 110, and its end is a smooth plane, which can smoothly contact the limiting surface of the probe mounting base 108. A position sensor 126 is fixedly disposed inside the probe mounting base 108, corresponding to the signal indicator plate 168 on the rotary probe holder 110, and is used to detect the rotational position of the rotary probe holder 110.

[0054] When the rotary probe holder 110 rotates around the rotation axis 118, the limiting stud 124 rotates synchronously with it. When it rotates to a predetermined angle (e.g., 90 degrees), the end of the limiting stud 124 contacts the limiting surface of the probe mounting base 108, restricting the rotary probe holder 110 from continuing to rotate, thus achieving mechanical limiting. At the same time, the signal indicator plate 168 on the rotary probe holder 110 moves into the detection range of the position sensor 126. The position sensor 126 detects the signal and transmits it to the CNC system, issuing a positioning signal to prompt the operator to rotate to the correct position.

[0055] The combination of mechanical limit and sensor detection ensures that the rotating probe holder 110 can rotate accurately to the predetermined angle, avoiding positional deviation of the probe 112 due to excessive or insufficient rotation, ensuring the accuracy of switching between different measurement positions, and thus ensuring the accuracy of the measurement results.

[0056] According to one embodiment of the present invention, the rotating probe holder 110 is configured to rotate 90 degrees to switch the probe 112 between a first position and a second position: In the first position, the axis of the probe 112 is parallel to the axis of the workpiece, and is used to measure the inner diameter or end face of the workpiece. In the second position, the axis of the probe 112 is perpendicular to the axis of the workpiece, and is used to measure the outer diameter or end face of the workpiece.

[0057] In one embodiment of the present invention, the rotating probe holder 110 is configured to rotate 90 degrees to switch the probe 112 between two orientations: a first orientation in which the axis of the probe 112 is parallel to the axis of the workpiece for measuring the inner diameter or end face of the workpiece; and a second orientation in which the axis of the probe 112 is perpendicular to the axis of the workpiece for measuring the outer diameter or end face of the workpiece.

[0058] The rotation angle of the rotary probe holder 110 is precisely limited to 90 degrees, and precise positioning is achieved through the cooperation of the limiting stud 124 and the limiting surface of the probe mounting base 108. In the first position, the probe 112 extends in a direction parallel to the workpiece axis, and the probe 112 can extend into the interior of the sleeve-type workpiece in the chuck grinding method, contacting the inner diameter surface or end face of the workpiece to achieve inner diameter or end face measurement.

[0059] In the second position, the rotating probe holder 110 rotates 90 degrees, and the probe 112 extends in a direction perpendicular to the workpiece axis. The probe 112 can contact the outer diameter surface or end face of the workpiece under the double-center grinding method to realize the measurement of the outer diameter or end face. The switching between the two positions is completed in coordination by the rotation of the rotating shaft 118, the locking mechanism, and the detection of the limit sensor, ensuring accurate switching and reliable fixation.

[0060] The 90-degree rotation switching design enables the on-machine measuring device 10 to simultaneously adapt to both chuck grinding and double-center grinding, achieving comprehensive measurement of the workpiece's outer diameter, inner diameter, and end face. This solves the problem of the traditional measuring device having a single measurement function, greatly expands the application range of horizontal grinding machines, and improves the equipment's versatility and practicality.

[0061] According to one embodiment of the present invention, a guide rail 128 is provided on the base 100, and a slider 130 that cooperates with the guide rail 128 is provided on the measuring component base 102. The slider 130 realizes the reciprocating motion of the measuring component base 102 by being guided along the guide rail 128.

[0062] In one embodiment of the present invention, a guide rail 128 is fixedly mounted on a base 100 along a first linear direction. The length of the guide rail 128 covers the travel distance of the measuring component base 102. The cross-section of the guide rail 128 is a stable structure such as a rectangle or triangle, with a smooth surface and high precision. A slider 130 is fixedly mounted on the bottom of the measuring component base 102. The slider 130 has a groove that matches the guide rail 128. The inner wall of the groove is smooth, and the fit clearance between the slider and the guide rail 128 is small, ensuring smooth sliding.

[0063] The guide rail 128 has limit block seats 152 and limit blocks 154 at both ends to limit the movement limit position of the measuring component base 102 and prevent the slider 130 from exceeding the range of the guide rail 128, which could cause damage to the component. The guide rail pressure strip 156 is mounted on the base 100 to fix the position of the guide rail 128 and prevent the guide rail 128 from shifting or deforming during use. The measuring component base 102, through the cooperation of the slider 130 and the guide rail 128, makes a smooth reciprocating linear motion along the guide rail 128 under the drive of the drive component 104.

[0064] The high-precision fit between the guide rail 128 and the slider 130 ensures that the reciprocating motion trajectory of the measuring component base 102 is accurate, without deviation or shaking, and ensures that the probe 112 can move smoothly along the preset direction and accurately reach the measurement position, significantly improving the measurement accuracy and repeatability.

[0065] According to one embodiment of the present invention, it further includes: The protective housing is fixed to the base 100; A flexible protective cover 132 is provided, with one end connected to the protective housing and the other end connected to the measuring component base 102 or the probe assembly 106, to protect the internal components when the measuring component base 102 reciprocates.

[0066] In one embodiment of the present invention, the protective housing consists of an upper cover plate, side cover plates, a lower cover plate, and a protective shield plate, which are fixedly installed on the base 100 to form a closed protective space, enclosing internal components such as the drive assembly 104, guide rail 128, slider 130, and grating ruler 114. The protective housing is made of high-strength sheet metal, which has good dustproof, chipproof, and waterproof performance, and can prevent chips, coolant, and dust generated during processing from entering the interior.

[0067] The flexible protective cover 132 is divided into upper and lower parts. One end of the upper flexible protective cover 132 is connected to the upper cover plate, and the other end is connected to the probe assembly 106. One end of the lower flexible protective cover 132 is connected to the lower cover plate, and the other end is connected to the probe assembly 106. The flexible protective cover 132 has good extensibility and flexibility, and can freely expand and contract with the reciprocating movement of the measuring component base 102, always maintaining full coverage protection for the internal components, and will not fail due to movement.

[0068] The combined protection of the protective housing and the flexible protective cover 132 can effectively block impurities such as chips, coolant, and dust from entering the interior, and prevent impurities from adhering to the surfaces of precision components such as the guide rail 128, slider 130, grating ruler 114, and drive assembly 104, thus preventing component wear, corrosion, or short circuits and significantly extending the service life of internal components.

[0069] like Figure 1 As shown, a second aspect of the present invention provides a horizontal grinding machine, comprising: Machine tool body 134; The grinding wheel holder 136 is rotatably mounted on the machine tool body 134; At least one grinding wheel spindle 138 is mounted on a grinding wheel holder 136; As described above, the in-machine measuring device 10 is also mounted on the grinding wheel frame 136; By rotating the grinding wheel frame 136, it is possible to switch between the machining position where the grinding wheel spindle 138 is aligned with the workpiece and the measurement position where the in-machine measuring device 10 is aligned with the workpiece.

[0070] According to the second aspect of the present invention, the in-machine measuring device 10 is integrated on a rotatable grinding wheel head 136, sharing the same motion carrier with the grinding wheel spindle 138. After the workpiece is processed, it can be directly measured on-machine by rotating the grinding wheel head 136 without disassembling or transferring it to offline equipment. This significantly shortens the processing-measurement cycle, reduces process flow time, and improves the overall production efficiency of the horizontal grinding machine, making it particularly suitable for automated production lines and batch processing scenarios. The in-machine measuring device 10 and the grinding wheel spindle 138 are mounted on the same grinding wheel head 136, sharing the high-precision mounting reference provided by the machine tool body 134. This eliminates measurement errors caused by workpiece clamping, unloading, transfer, or differences in references between different equipment, allowing the measurement results to directly reflect the actual processing accuracy of the workpiece and ensuring the stability and consistency of product quality. The rotation switching of the grinding wheel head 136 and the triggering and resetting of the measuring device can be automatically controlled by the horizontal grinding machine's CNC system, eliminating the need for operators to frequently manually adjust the position of the measuring device or change measuring tools.

[0071] The horizontal grinding machine provided in the second aspect of the present invention integrates machining and measurement functions on the same carrier through the rotation switching function of the grinding wheel head 136, thereby achieving seamless connection between workpiece machining and on-machine measurement.

[0072] The machine tool body 134 serves as the basic frame of the horizontal grinding machine, providing the mounting and positioning reference for each core component. Internally, it houses a drive mechanism, a guide rail system 128, and a control system, supporting the operation of components such as the grinding wheel head 136 and the workpiece clamping structure, and ensuring the relative positional accuracy between these components. The pre-installed mounting guide rails 128 and connection interfaces on the machine tool body 134 provide the foundation for the rotational mounting of the grinding wheel head 136 and subsequent motion control.

[0073] The grinding wheel head 136 is rotatably mounted on the machine tool body 134 via a rotating shaft or slewing bearing structure. The rotation axis of the grinding wheel head 136 is preset to be perpendicular to or at a specific angle to the workpiece machining axis to ensure accurate alignment with the machining or measurement position during switching. The grinding wheel head 136 has mounting holes for mounting the grinding wheel spindle 138. The positional accuracy and coaxiality of the mounting holes are precision machined to ensure the operational stability of the grinding wheel spindle 138. At the same time, the preset mounting area of ​​the grinding wheel head 136 is precisely matched in shape, size, and positioning reference to the probe mounting seat 108 of the on-machine measuring device 10, ensuring that the on-machine measuring device 10 can be firmly and accurately mounted on the grinding wheel head 136 and complete the rotation switching synchronously with the grinding wheel spindle 138.

[0074] At least one grinding wheel spindle 138 is fixedly mounted on the grinding wheel head 136 for mounting the grinding wheel and performing cutting operations on the workpiece. The grinding wheel spindle 138 has an internal drive connection structure that can be connected to the main drive system inside the horizontal grinding machine to obtain high-speed rotational power. The positional relationship between the axis of the grinding wheel spindle 138 and the rotation axis of the grinding wheel head 136 is preset to ensure that when the grinding wheel head 136 rotates to the machining position, the grinding wheel spindle 138 can be precisely aligned with the machining area of ​​the workpiece, achieving high-precision grinding of the workpiece.

[0075] The on-machine measuring device 10 is fixedly connected to a preset mounting area on the grinding wheel head 136 via its base 100 or probe mounting seat 108, achieving synchronous installation and rotation with the grinding wheel spindle 138. The initial position or rotational calibration position of the probe 112 of the on-machine measuring device 10 is preset to ensure that when the grinding wheel head 136 rotates to the measuring position, the probe 112 can accurately align with the measuring part of the workpiece. Through the control of the horizontal grinding machine's CNC system, the grinding wheel head 136 can precisely switch between two key positions according to the machining process instructions: Machining position: The grinding wheel spindle 138 is aligned with the workpiece to perform grinding. At this time, the on-machine measuring device 10 rotates synchronously with the grinding wheel head 136 to a safe avoidance position to avoid interference with the workpiece or other parts of the horizontal grinding machine.

[0076] Measurement position: The grinding wheel frame 136 rotates and switches so that the probe 112 of the on-machine measuring device 10 is aligned with the workpiece to perform the dimension and accuracy detection after machining; at this time, the grinding wheel spindle 138 rotates synchronously to the non-machining avoidance position to ensure that the measurement is carried out smoothly.

[0077] According to one embodiment of the present invention, the horizontal grinding machine is a horizontal internal and external cylindrical grinding machine, and further includes: The headstock 140 and tailstock 142 are mounted on the machine tool body 134 and are used to clamp workpieces. The grinding wheel head 136 can move relative to the machine tool body 134 along the first axis direction; The headstock 140 and tailstock 142 can move relative to the machine body 134 along a second axis direction perpendicular to the first axis.

[0078] In one embodiment of the present invention, the headstock 140 and tailstock 142 are symmetrically mounted on the worktable of the machine tool body 134 for clamping and fixing workpieces. The headstock 140 can drive the workpiece to rotate, and the tailstock 142 can move along the axial direction to adapt to workpieces of different lengths. The clamping structure of the headstock 140 and tailstock 142 has good centering accuracy and clamping force, ensuring that the workpiece is firmly clamped and rotates stably.

[0079] The grinding wheel head 136 is mounted on the guide rail 128 of the machine tool body 134 and can move along the first axis to realize the feed motion between the grinding wheel and the workpiece. The headstock 140 and tailstock 142 can move synchronously along the second axis to adjust the lateral position of the workpiece so that the machining part and the measuring part of the workpiece can be accurately aligned with the grinding wheel spindle 138 and the on-machine measuring device 10.

[0080] The in-machine measuring device 10 is mounted on the grinding wheel frame 136 together with the outer cylindrical grinding wheel spindle and the inner cylindrical grinding wheel spindle. By rotating the grinding wheel frame 136, the machining position and the measuring position can be switched. With the movement of the grinding wheel frame 136, the headstock 140 and the tailstock 142, the machining and measurement of different parts of the workpiece can be realized.

[0081] The high-precision clamping structure of the headstock 140 and tailstock 142 ensures the centering accuracy and rotational stability of the workpiece, providing a foundation for high-precision machining and measurement. The multi-directional movement function of the grinding wheel head 136, headstock 140 and tailstock 142 enables the workpiece to be accurately aligned with the machining and measurement position, avoiding machining and measurement errors caused by positioning deviations and ensuring product quality.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An in-machine measuring device, characterized in that, include: Base; The measuring component base is movably mounted on the base; A driving component is used to drive the base of the measuring component to reciprocate along a first linear direction; A probe assembly is mounted on the base of the measuring component. The probe assembly includes a probe mounting base, a rotating probe base, and a probe. The rotating probe base is rotatably connected to the probe mounting base, and the probe is disposed on the rotating probe base. The rotating probe holder is configured to rotate about a rotation axis so that the probe can switch between at least two different measurement orientations.

2. The in-machine measurement device according to claim 1, characterized in that, Also includes: A grating ruler is disposed on the base along the first straight line direction; A reading head, mounted on the base of the measuring component and cooperating with the grating ruler, is used to provide closed-loop position feedback on the movement of the base of the measuring component.

3. The in-machine measurement device according to claim 1, characterized in that, The probe assembly also includes: A rotating shaft is connected to the rotating probe base, and the rotating shaft is rotatably mounted in the probe mounting base.

4. The in-machine measurement device according to claim 3, characterized in that, It also includes a locking mechanism for fixing the rotating shaft in a preset rotation position; The locking mechanism includes: Plum blossom lock nut; A spring plate, driven by the plum blossom locking nut, abuts against the rotating shaft to lock the rotating shaft.

5. The in-machine measurement device according to claim 3, characterized in that, The probe assembly also includes: A limiting stud is provided on the rotating probe base; A position sensor is disposed within the probe mounting base; When the rotating probe holder rotates to a predetermined angle, the limiting stud contacts the limiting surface of the probe mounting base, and the position sensor detects that the rotating probe holder has reached the predetermined angle.

6. The in-machine measurement device according to claim 1, characterized in that, The rotating probe holder is configured to rotate 90 degrees to allow the probe to switch between a first position and a second position: In the first position, the axis of the probe is parallel to the axis of the workpiece, and is used to measure the inner diameter or end face of the workpiece. In the second position, the axis of the probe is perpendicular to the axis of the workpiece, and is used to measure the outer diameter or end face of the workpiece.

7. The in-machine measurement device according to claim 1, characterized in that, The base is provided with a guide rail, and the measuring component base is provided with a slider that cooperates with the guide rail. The slider is guided along the guide rail to realize the reciprocating motion of the measuring component base.

8. The in-machine measurement device according to claim 1, characterized in that, Also includes: A protective housing is fixed to the base; A flexible protective cover, one end of which is connected to the protective housing and the other end of which is connected to the measuring component base or the probe assembly, to protect the internal components when the measuring component base reciprocates.

9. A horizontal grinding machine, characterized in that, include: Machine tool body; The grinding wheel holder is rotatably mounted on the machine tool body; At least one grinding wheel spindle is mounted on the grinding wheel holder; The in-machine measuring device as described in any one of claims 1 to 8, wherein the in-machine measuring device is also mounted on the grinding wheel frame; The grinding wheel head can be rotated to switch between the machining position where the grinding wheel spindle is aligned with the workpiece and the measurement position where the in-machine measuring device is aligned with the workpiece.

10. The horizontal grinding machine according to claim 9, characterized in that, The horizontal grinding machine is a horizontal internal and external cylindrical grinding machine, and also includes: The headstock and tailstock are mounted on the machine tool body and used for clamping workpieces; The grinding wheel frame is movable relative to the machine tool body along the first axis direction; The headstock and tailstock are movable relative to the machine tool body along a second axis direction perpendicular to the first axis.

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