A gauge block machining positioning device

Abstract

The utility model discloses a gauge block processing positioning device belongs to precision machining technical field, and the device includes fixed frame, rotatably mounted in the adjusting mechanism of fixed frame and fixed connection's adaptation mechanism, is provided with clamping subassembly in the adjusting mechanism, and it includes servo motor, gear one and rack one for servo motor preliminary positioning, the efficient transmission mechanism that constitutes by ball and screw rod, and the base and tray for stable support gauge block, and servo motor realizes the precision clamping of gauge block through transmission mechanism drive fixed pincers, and the adaptation mechanism includes the hydraulic push rod for the automatic regulation and the laser interferometer for real -time feedback calibration. The utility model has solved the problem that the existing device clamping force control is not accurate, lacks dynamic calibration ability, has realized the high accuracy, micro - force nondestructive positioning of gauge block, has improved the processing quality and automation level significantly, and the overall structure is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of precision machining technology, and in particular to a positioning device for machining gauge blocks. Background Technology

[0002] Gauge blocks, as reference instruments for length measurement, possess extremely high dimensional accuracy, surface finish, and the flatness and parallelism of their measuring surfaces. During grinding, polishing, or engraving processes, stable, precise, and damage-free positioning and clamping of gauge blocks is a prerequisite for ensuring the final machining quality.

[0003] In current machining practices, general-purpose fixtures or simple positioning devices are often used to fix gauge blocks. However, these devices often have limitations due to their simple structure and single function. For example, when using manual screw clamping, it is difficult for the operator to precisely control the clamping force. Excessive clamping force can easily cause slight elastic deformation of the gauge block. Although this deformation is difficult to detect with the naked eye, it can have a fatal impact on sub-micron level machining accuracy. Conversely, if the clamping force is too small, the gauge block cannot be guaranteed to resist cutting or grinding forces during machining, and displacement and vibration are likely to occur, which also cannot achieve satisfactory machining results.

[0004] Traditional positioning methods are typically "static positioning," meaning that once the position is adjusted and fixed, processing begins. Throughout the process, there is a lack of dynamic monitoring and compensation for minute positional changes that may be caused by factors such as equipment temperature drift or external vibration. This open-loop control method means that the initial positioning accuracy cannot be effectively maintained throughout the entire processing cycle, leading to the continuous accumulation of errors and ultimately resulting in substandard precision of the machined gauge blocks.

[0005] Therefore, this utility model proposes a positioning device for machining gauge blocks to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of gauge block machining positioning devices, such as inaccurate clamping force control, which leads to workpiece deformation, and the general lack of dynamic and real-time position monitoring and calibration capabilities, which seriously affect the final machining accuracy, this utility model aims to provide a gauge block machining positioning device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a positioning device for machining gauge blocks, including: a fixed frame, an adjustment mechanism, a fixed bracket, a fixed clamp; as well as an adapter mechanism, a base, a fixed block, a clamping assembly, a servo motor, a ball bearing, a lead screw, a gear, a rack, a base, a tray, a hydraulic push rod, and a laser interferometer.

[0008] The adjusting mechanism is rotatably mounted inside the fixed frame, and the clamping assembly is integrated into the adjusting mechanism. The servo motor in the clamping assembly achieves initial positioning through the meshing transmission of a gear and a rack. The servo motor also drives a lead screw that is engaged with a ball bearing. The linear motion of the lead screw drives the fixed clamp to perform clamping or releasing actions. The clamping assembly also includes a base disposed below the fixed clamp and a tray supported on the base to stably support the bottom of the gauge block.

[0009] Furthermore, the adapter mechanism is fixedly connected to the bottom of the fixed frame via a base and a fixing block. The adapter mechanism integrates a hydraulic push rod for automatic adjustment and a laser interferometer for real-time position feedback and calibration. The adjustment mechanism, the adapter mechanism, and the fixed frame are combined through precise connection and spatial position relationship to form a complete system integrating precision clamping, stable support, and real-time calibration functions.

[0010] Preferably, the left and right sides of the fixing frame are connected by an adjusting rod with a size engraved on its surface and a bolt, which achieves an adjustable fixed connection between the fixing frame and the fixing frame in terms of angle and position. This structure not only ensures the stability of the connection, but also provides an intuitive and convenient quantitative basis for the initial alignment and debugging of the device.

[0011] Preferably, a gasket is detachably installed at the jaws of the clamping clamp via a snap or thread. The gasket is preferably made of a high-molecular polymer material with a low coefficient of friction and a certain degree of elasticity. This design can effectively isolate and protect the precision non-working surface of the gauge block during clamping, and also facilitates quick replacement according to wear conditions, ensuring continuous protection.

[0012] Preferably, the adapter mechanism further includes a fixed rod. Both the hydraulic push rod and the fixed rod are rotatably connected to the front of the fixed frame. Through the linear extension and retraction of the hydraulic push rod, a precise and stable pushing or pulling force can be applied to the entire adjustment mechanism, thereby realizing automated and high-precision fine adjustment of the gauge block position.

[0013] Preferably, the adapter mechanism is further equipped with a meshing gear two and a rack two at the rear of the fixed frame. The meshing transmission of the gear two and the rack two is used to assist the adjustment mechanism in performing high-precision sliding displacement adjustment. The structure and the front hydraulic push rod form a cooperative control mechanism, which further improves the stability and accuracy of the adjustment.

[0014] Preferably, the adapter mechanism further includes a support rod vertically fixed to the center of the top of the fixed frame, and the laser interferometer is mounted on the free end of the support rod. This arrangement allows the laser interferometer to perform vertical measurements on the working surface of the gauge block below without obstruction, providing the best optical path for achieving fast and accurate real-time position calibration.

[0015] Preferably, the transmission mechanism consisting of the lead screw and the ball bearing is located inside the fixed frame and is specifically used to drive the front structure of the fixed clamp. This single-sided drive design simplifies the mechanical structure, while achieving a stable and reliable clamping effect through high-precision closed-loop control.

[0016] Preferably, support structures are installed on both the front and rear sides of the fixed frame. These support structures enhance the overall rigidity of the fixed frame. In particular, when the adjustment mechanism moves up and down, they can effectively suppress possible vibrations or deformations, ensuring the high stability of the entire device during dynamic adjustment.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem of inaccurate clamping force control and easy deformation and damage of gauge blocks in the prior art by setting a clamping component driven by a servo motor and ball screw transmission. It achieves the technical effect of high-precision micro-force clamping of gauge blocks and significantly improves the reliability of positioning and processing accuracy.

[0018] 2. This utility model, by setting up an adapter mechanism that integrates a laser interferometer and a hydraulic push rod, solves the problems in the prior art where the positioning device lacks real-time position feedback and automatic calibration capabilities, and the adjustment process relies on manual operation with low accuracy. It achieves the technical effect of automated assisted precise positioning and real-time closed-loop calibration, greatly simplifies the operation and ensures the final processing quality.

[0019] 3. This utility model solves the problems of poor stability and susceptibility to environmental temperature and vibration in the positioning device in the prior art by using high-stability materials such as granite or cast iron to make the base and tray, and by strengthening the support design of the fixing frame. It achieves the technical effect of improving the overall rigidity, thermal stability and vibration resistance of the device, and provides a stable and reliable basic platform for ultra-precision machining.

[0020] 4. This utility model, by modularly designing the adjustment mechanism and the adapter mechanism, and using a graduated adjustment rod, replaceable shims, and other structures, solves the problems of simple device structure, inconvenient adjustment, and insufficient protection of workpieces in the prior art. It achieves the technical effect of clear structure, flexible and convenient adjustment, and effective protection of precision workpieces, thereby enhancing the practicality and maintainability of the device. Attached Figure Description

[0021] Figure 1 This is a perspective view of a gauge block machining positioning device proposed in this utility model; Figure 2 This is a side view of a gauge block machining positioning device proposed in this utility model; Figure 3 This is a partial structural exploded view of a gauge block machining positioning device proposed in this utility model; Figure 4 This is a partial structural schematic diagram of a gauge block machining positioning device proposed in this utility model.

[0022] Legend: 1. Fixed frame; 2. Adjustment mechanism; 201. Fixed bracket; 202. Adjusting rod; 203. Bolt; 204. Fixing clamp; 205. Washer; 206. Clamping assembly; 2061. Ball bearing; 2062. Lead screw; 2063. Base; 2064. Tray; 2065. Servo motor; 2066. Gear 1; 2067. Rack 1; 3. Adaptor mechanism; 301. Base; 302. Fixing block; 303. Hydraulic push rod; 304. Fixing rod; 305. Support rod; 306. Laser interferometer; 307. Gear 2; 308. Rack 2. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Example: Please refer to Figures 1 to 4 This utility model provides a gauge block machining positioning device, which aims to solve the problems of low gauge block positioning accuracy, inaccurate clamping force control leading to gauge block deformation, and lack of real-time calibration capability that makes it difficult to guarantee machining accuracy in the prior art.

[0025] like Figure 1 and Figure 2As shown, a gauge block machining positioning device includes a fixed frame 1, an adjustment mechanism 2 rotatably installed inside the fixed frame 1, and an adapter mechanism 3 fixedly connected to the fixed frame 1. The fixed frame 1 serves as the mounting base 2063 and support frame for the entire device, providing a stable connection foundation for the adjustment mechanism 2 and the adapter mechanism 3. Support structures are installed on both the front and rear sides of the fixed frame 1 to increase the overall stability of the adjustment mechanism 2 during vertical adjustment. The adjustment mechanism 2 includes a fixed frame 201 for supporting components. At least one pair of clamping clamps 204 for holding gauge blocks are provided on the fixed frame 201 along its front-rear direction. The left and right sides of the fixed frame 201 are connected by an adjustment rod 202 with dimensions engraved on its surface and a bolt 203 to achieve an adjustable fixed connection between the fixed frame 201 and the fixed frame 1 in terms of angle and position. The adapter mechanism 3 is fixedly connected to the bottom of the fixed frame 1 through a base 301 and a fixing block 302, providing a foundation for the stable operation of the adapter mechanism 3.

[0026] The adjustment mechanism 2 is equipped with a precision clamping component 206, and the clamping component 206 forms a specific drive and support relationship with the fixing frame 201 and the fixing clamp 204.

[0027] The clamping assembly 206 includes a servo motor 2065 for providing precision driving force. A gear 2066 is fixedly connected to the output end of the servo motor 2065. The gear 2066 meshes with a fixedly mounted rack 2067 for transmission. This structure is used for initial installation and positioning of the servo motor 2065. The servo motor 2065 also drives a lead screw 2062 that rolls with a ball bearing 2061. The transmission mechanism formed by the lead screw 2062 and the ball bearing 2061 is located within the mounting bracket 201 and is specifically used to drive the front clamp 204. The rotational motion of the lead screw 2062 is converted into high-precision linear motion through the ball bearing 2061, thereby driving the clamp 204. 04. Achieve precise clamping or release of the gauge block; This transmission method, which uses ball bearings 2061 and lead screw 2062, replaces sliding friction with rolling friction, greatly improving transmission efficiency and positioning accuracy, while reducing wear and ensuring precise control of clamping force; At the same time, the clamping assembly 206 also includes a base 2063 located below the fixed clamp 204 and a tray 2064 supported on the base 2063 to stably support the bottom of the gauge block. The base 2063 and the tray 2064 are made of materials with good thermal stability and high damping, such as granite or cast iron, and are subjected to aging treatment to eliminate internal stress, ensuring extremely high stability of the gauge block during clamping and processing.

[0028] In a preferred embodiment, in order to protect the non-working surface of the gauge block from damage and contamination during clamping, a gasket 205 is detachably installed at the jaws of the clamping clamp 204 by means of a snap or thread. The gasket 205 is preferably made of a material with a low coefficient of friction and a certain degree of elasticity, such as polytetrafluoroethylene or a high molecular polymer, which is convenient for regular replacement and cleaning.

[0029] As another preferred embodiment, the adapter mechanism 3 is used to assist the adjustment mechanism 2 in achieving more precise and automated positioning. Please refer to [reference needed]. Figure 1 and Figure 2 The adapter mechanism 3 includes a fixed rod 304 and a hydraulic push rod 303. Both the hydraulic push rod 303 and the fixed rod 304 are rotatably connected to the front of the fixed frame 1. Through the extension and retraction of the hydraulic push rod 303, the adjustment mechanism 2 can be precisely pushed and pulled to reduce manual intervention.

[0030] As another preferred embodiment, in order to further improve the smoothness and accuracy of the movement adjustment, the adapter mechanism 3 is also equipped with a meshing gear 2 307 and a rack 2 308 at the rear of the fixed frame 1. The meshing transmission of gear 2 307 and rack 2 308 is used to assist the adjustment mechanism 2 in performing high-precision sliding displacement adjustment, and forms a coordinated control with the front hydraulic push rod 303.

[0031] As another preferred embodiment, in order to realize real-time monitoring and calibration of the positioning process, the adapter mechanism 3 also includes a support rod 305 that is vertically fixed to the center of the top of the fixed frame 1. The laser interferometer 306 is installed on the free end of the support rod 305. The laser interferometer 306 can emit a laser beam to the working surface of the gauge block and receive the reflected signal. It calculates the precise position information through the interference principle, thereby realizing the convenience of operation and real-time feedback and calibration of positioning accuracy.

[0032] Working principle: The non-working surface of the gauge block is placed in the jaws of the fixing clamp 204 of the adjustment mechanism 2. Replaceable shims 205 are installed at the jaws to prevent the gauge block from contaminating the data. The adjustment mechanism 2 rotates inside the fixing frame 1. The fixing frame 1 provides support for the adjustment mechanism 2 while facilitating operation and increasing the overall integrity of the connection. To improve the accuracy of gauge block measurement, fixing clamps 204 are installed at the front and rear of the fixing frame 201 to easily hold the non-working surface of the gauge block, increasing the accuracy of gauge block dimensions, surface finish, and the flatness and parallelism of the measurement surface. The fixing frame 201 is initially adjusted on both sides by adjusting rods 202 with adjustable angles and bolts 203. The adjusting rods 202 are engraved with dimensions for easy positioning. Precision fixing clamps 204 are used inside the fixing frame 201. The non-working surface is clamped with micro-force. The clamping component 206 controls a pair of fixed clamps 204. The front fixed clamp 204 uses rolling friction instead of sliding friction through ball bearings 2061 and lead screw 2062, which greatly improves transmission efficiency and accuracy while reducing wear. The rear side of the fixed clamp 204 is equipped with gear 2066 and rack 2067 to perform preliminary positioning of the top servo motor 2065. At the same time, the servo motor 2065 and high-resolution absolute encoder form a closed-loop control system to achieve precise position, speed and torque control. The bottom of the gauge block is subjected to aging treatment through tray 2064 and two open base 2063 structural components to eliminate internal stress. The tray 2064 and base 2063 are made of materials with good thermal stability and high damping, such as granite or cast iron. To improve the accuracy of processing positioning, an adapter mechanism 3 is used to assist in achieving more precise positioning. The base 301 and the fixing block 302 are fixed to the chassis of the fixing frame 1, which facilitates connection and increases stability. The front of the fixing frame 1 has an actively adjustable hydraulic push rod 303 and a fixing rod 304, which reduces manual adjustment. The rear of the fixing frame 1 is equipped with a gear 307 and a rack 308 for meshing transmission, which facilitates sliding and increases the precision of movement adjustment. Supports are installed at both the front and rear of the fixing frame 1 to increase the stability of the equipment's vertical adjustment. At the top center of the fixing frame 1, a support rod 305 and a laser interferometer 306 are installed for convenient user calibration, real-time position feedback and calibration, and to facilitate operation.

Claims

1. A positioning device for machining gauge blocks, comprising: Fixed frame (1); Adjustment mechanism (2), which is rotatably mounted inside the fixed frame (1), includes a fixed frame (201) for carrying components, and at least one pair of clamping clamps (204) for holding gauge blocks are provided on the fixed frame (201) along its front-back direction. Its features are, The aforementioned block processing positioning device further includes an adapter mechanism (3), which is fixedly connected to the bottom of the fixed frame (1) via a base (301) and a fixing block (302); The adjustment mechanism (2) is provided with a clamping assembly (206). The clamping assembly (206) includes a servo motor (2065) for providing driving force. The output end of the servo motor (2065) achieves preliminary positioning through the meshing transmission of gear one (2066) and rack one (2067). The servo motor (2065) also drives a lead screw (2062) that rolls with a ball (2061). The linear motion of the lead screw (2062) drives one of the fixing clamps (204) to perform clamping or releasing actions. The clamping assembly (206) also includes a base (2063) disposed below the fixing clamp (204) and a tray (2064) supported on the base (2063) for stabilizing the bottom of the gauge block. The adapter (3) includes a hydraulic push rod (303) for automated adjustment and a laser interferometer (306) for real-time position feedback and calibration.

2. The gauge block machining positioning device according to claim 1, characterized in that, The left and right sides of the fixing frame (201) are connected by an adjusting rod (202) with a size engraved on the surface and a bolt (203) to achieve an adjustable fixed connection between the fixing frame (201) and the fixing frame (1) in terms of angle and position.

3. The gauge block machining positioning device according to claim 1, characterized in that, The clamping clamp (204) has a detachable pad (205) installed at the jaws by a snap or thread. The pad (205) is used to isolate and protect the non-working surface of the gauge block during clamping.

4. The gauge block machining positioning device according to claim 1, characterized in that, The adapter mechanism (3) also includes a fixed rod (304). Both the hydraulic push rod (303) and the fixed rod (304) are rotatably connected to the front of the fixed frame (1) for pushing and pulling adjustment of the adjustment mechanism (2).

5. The gauge block machining positioning device according to claim 4, characterized in that, The adapter mechanism (3) also has a meshing gear two (307) and a rack two (308) installed at the rear of the fixed frame (1). The meshing transmission of the gear two (307) and the rack two (308) is used to assist the adjustment mechanism (2) in performing high-precision sliding displacement adjustment.

6. The gauge block machining positioning device according to claim 1, characterized in that, The adapter mechanism (3) also includes a support rod (305) that is vertically fixed to the center of the top of the fixed frame (1). The laser interferometer (306) is installed at the free end of the support rod (305) to facilitate quick calibration of the gauge block working surface.

7. The gauge block machining positioning device according to claim 1, characterized in that, The transmission mechanism consisting of the lead screw (2062) and the ball bearing (2061) is located inside the fixed frame (201) and is specifically used to drive the structure located on the front side of the fixed clamp (204).

8. The gauge block machining positioning device according to claim 1, characterized in that, The fixed frame (1) is equipped with support structures on both the front and rear sides to increase the overall stability of the adjustment mechanism (2) when it is adjusted up and down.

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