Non-contact grinder workpiece thickness automatic detection device
By using a non -contact vortex displacement sensor and 7 -aliased brackets on the grinding machine, the problem of being susceptible to vibration and pollution of the contact sensor is solved, and the accurate and real -time detection and automatic control of the thickness of the workpiece is achieved to ensure that the processing contributions have Consistency of thickness.
Patent Information
- Application Number
- CN202323495099.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-21
AI Technical Summary
The existing grinder thickness measurement methods mostly use contact displacement sensors, which are easily affected by machine vibration and grinding fluid contamination, resulting in inaccurate measurement.
A non -contact grinding mechanical workpiece thickness detection device is designed, which uses the vortex current displacement sensor and 7 -shaped sensor bracket. The cooperation of induction brackets and installation brackets can be realized to realize real -time detection and memory of the thickness of the workpiece.
Effectively reduce the effects of vibration on measurement, avoid errors caused by pollution of abrasive liquid, and achieve accurate real -time detection and automatic control of the thickness of the workpiece to ensure the consistency of the thickness of the processing parts.
Smart Images
Figure CN222405065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thickness detection, in particular to a non-contact type grinding machine workpiece thickness automatic detection device. Background Art
[0002] Grinding machines are widely used in grinding silicon wafers, sapphire, quartz crystals, and other hard and brittle materials. With the improvement of technology in various industries, higher requirements are placed on the performance of the workpieces. The thickness of the workpieces needs to be strictly controlled and monitored in real time. Currently, most of the thickness measurement methods of grinding machines on the market use contact displacement sensors. This sensor is easily affected by external factors such as machine vibration and grinding fluid contamination, resulting in inaccurate measurement and unusable. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a non-contact type automatic detection device for the thickness of a workpiece of a grinding machine.
[0004] The technical solution adopted by the utility model to solve the technical problem is:
[0005] A non-contact grinder workpiece thickness automatic detection device comprises a grinder gantry, a lower grinding disc arranged on the grinder gantry, an upper grinding disc arranged on the grinder gantry and located above the lower grinding disc, a 7-shaped sensing bracket is provided on the upper grinding disc, a mounting bracket is provided on the grinder gantry, the mounting bracket extends to the bottom of the 7-shaped sensing bracket, an induction area exists between the upper end of the mounting bracket and the 7-shaped sensing bracket, and an eddy current displacement sensor is provided above the mounting bracket.
[0006] In one embodiment, a programmable controller is provided on the grinding machine gantry.
[0007] In one embodiment, the programmable controller is electrically connected to the eddy current displacement sensor.
[0008] In one embodiment, the programmable controller is electrically connected to the grinding machine.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] 1. The utility model installs the eddy current displacement sensor on the mounting bracket, and the mounting bracket is installed on the gantry of the grinding machine, which effectively reduces the impact of vibration;
[0011] 2. The utility model is installed on the upper grinding disc through the induction bracket. When there is a workpiece between the upper grinding disc and the lower grinding disc, before the grinding is started, the displacement sensor measures the thickness of the workpiece and memorizes it in the programmable controller. As the grinding is running, the workpiece is ground by the upper grinding disc and the lower grinding disc, causing the thickness of the workpiece to change. The induction bracket on the upper grinding disc will move downward, resulting in a displacement difference between the eddy current displacement sensor and the induction bracket on the upper grinding disc. Therefore, the displacement change detected by the eddy current displacement sensor is the thickness change of the workpiece. Every time the upper grinding disc rotates one circle, the eddy current displacement sensor feeds back data once, and the programmable controller collects data in real time. Therefore, the programmable controller can detect the thickness of the workpiece in real time. When the ground workpiece reaches the set target thickness, the programmable controller controls the grinder to stop automatically to ensure the consistency of the thickness of the processed workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;
[0013] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure.
[0014] In the figure: 1. mounting bracket, 2. eddy current displacement sensor, 3. 7-shaped sensing bracket, 4. upper grinding disc, 5. lower grinding disc, 6. grinding machine gantry. DETAILED DESCRIPTION
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] It should be noted that the utility model is applied to a grinding machine.
[0017] Example 1
[0018] like Figure 1-2 As shown, this embodiment includes a grinder gantry 6, a lower grinding disc 5 arranged on the grinder gantry 6, and an upper grinding disc 4 arranged on the grinder gantry 6 and located above the lower grinding disc 5;
[0019] A 7-shaped sensing bracket 3 is provided on the upper grinding disc 4, and a mounting bracket 1 is provided on the grinding machine gantry 6. The mounting bracket 1 extends to the bottom of the 7-shaped sensing bracket 3, so that there is a sensing area between the upper end of the mounting bracket 1 and the 7-shaped sensing bracket 3, and an eddy current displacement sensor 2 is provided above the mounting bracket 1.
[0020] A programmable controller is provided on the grinder gantry 6 , and the programmable controller is electrically connected to the eddy current displacement sensor 2 , and the programmable controller is electrically connected to the grinder.
[0021] In this embodiment, an amplifier, an amplifier communication line, and a shielded cable are also included, wherein the amplifier is connected to the eddy current displacement sensor 2 via the shielded cable.
[0022] Therefore, every time the upper grinding disc 4 rotates one circle, the eddy current displacement sensor 2 feeds back data once, so that the programmable controller can collect data in real time; when the upper disc 4 of the grinder descends, the induction bracket 3 descends with the upper disc 4 of the grinder. At this time, the eddy current displacement sensor 2 converts the displacement signal into an electrical signal and transmits it to the amplifier through a shielded cable. The amplifier calculates the displacement value through the signal and transmits it to the programmable controller through the amplifier communication line to obtain the thickness of the workpiece. When the thickness of the workpiece reaches the set value, the machine automatically stops; therefore, the utility model can improve the processing efficiency of the grinder, shorten the processing time, and at the same time ensure the consistency of the thickness of the processed workpiece after processing, thereby improving the quality of the product.
[0023] The utility model utilizes the characteristics of the eddy current displacement sensor 2 and does not contact the workpiece and the grinding machine, thereby reducing the error caused by the vibration of the machine itself and the pollution of the grinding fluid.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the technical solution of the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the spirit and scope of the technical solution of each embodiment of the utility model.
Claims
1. A non-contact grinding machine workpiece thickness automatic detection device, comprising a grinding machine gantry (6), a lower grinding disc (5) arranged on the grinding machine gantry (6), and an upper grinding disc (4) arranged on the grinding machine gantry (6) and located above the lower grinding disc (5), characterized in that: A 7-shaped induction bracket (3) is provided on the upper grinding disc (4), a mounting bracket (1) is provided on the grinding machine gantry (6), the mounting bracket (1) extends to the bottom of the 7-shaped induction bracket (3), a sensing area exists between the upper end of the mounting bracket (1) and the 7-shaped induction bracket (3), and an eddy current displacement sensor (2) is provided above the mounting bracket (1).
2. The non-contact grinding machine workpiece thickness automatic detection device according to claim 1 is characterized in that: The grinding machine gantry (6) is provided with a programmable controller.
3. The non-contact grinding machine workpiece thickness automatic detection device according to claim 2 is characterized in that: The programmable controller is electrically connected to the eddy current displacement sensor (2).
4. The non-contact grinding machine workpiece thickness automatic detection device according to claim 3 is characterized in that: The programmable controller is electrically connected to the grinder.