Method and system for reducing temperature difference between ring gauge and part to be measured

Abstract

A method and system for reducing the temperature difference between a ring gauge and a to-be-measured part, and the method comprises the following steps: 1, constructing a ring gauge constant-temperature circulating water path on the basis that a machine tool cooling water tank is provided with a part cooling circulating water path, forming double circulation, and connecting a constant-temperature device to the ring gauge constant-temperature circulating water path; controlling the cooling water after cooling the parts in the machining process to flow back to the machine tool cooling water tank through the part cooling circulating water path; cooling water in the machine tool cooling water tank is controlled to synchronously circulate in the ring gauge constant-temperature circulating water path and the constant-temperature device, and the temperature difference between the constant-temperature device and the parts is reduced through heat exchange; the method replaces a conventional method of cooling depending on room temperature, machine tool cooling water is directly used as a constant-temperature medium, the temperature of the ring gauge and the temperature of the machined part are kept consistent, and then the detection precision of the part is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of parts detection, and in particular to a method and a system for reducing the temperature difference between a ring gauge and a part to be detected. Background Art

[0002] As a standard size part, the ring gauge is greatly affected by temperature. In a machining workshop, the temperature difference between the ring gauge and the machined part often leads to inaccurate measurement results. The traditional solution is to build a constant temperature production workshop and a constant temperature test room to maintain the temperature within a certain range. After the parts are machined, they need to be kept at a constant temperature for 24 hours to ensure that the temperature of the parts is completely consistent with that of the ring gauge to improve the accuracy of the measurement. This constant temperature method is time-consuming and inefficient, affecting the machining accuracy and production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for reducing the temperature difference between the ring gauge and the part to be tested, replacing the conventional method of cooling by room temperature, directly using machine tool cooling water as a constant temperature medium to keep the temperature of the ring gauge and the processed part consistent, thereby ensuring the accuracy of part detection.

[0004] The technical solution adopted by the present invention is: a method for reducing the temperature difference between a ring gauge and a part to be measured, comprising the following steps: Step 1: On the basis of a parts cooling circulating water circuit in the machine tool cooling water tank, a ring gauge constant temperature circulating water circuit is constructed to form a double circulation, and a constant temperature device is connected to the ring gauge constant temperature circulating water circuit; Control the cooling water after cooling the parts during the processing to flow back to the machine tool cooling water tank through the parts cooling circulation water circuit; Controlling the cooling water in the cooling water tank of the machine tool to circulate synchronously in the constant temperature circulation water circuit of the ring gauge and the constant temperature device, and reducing the temperature difference between the constant temperature device and the parts through heat exchange; Step 2: during the processing of the parts, the ring gauge is placed in the constant temperature device and maintained for a period of time T. During the period of time T, the temperature of the ring gauge and the part are made consistent under the action of the double cycle; Step 3: After the parts are processed, use a ring gauge with sufficient heat exchange to directly measure the size of the parts.

[0005] As a preferred solution, the thermostatic device has a heat exchange channel for cooling water to flow and a ring gauge accommodating cavity inside, and the heat exchange channel and the ring gauge accommodating cavity are separated and conduct heat to each other.

[0006] As a preferred solution, after the ring gauge is placed in the constant temperature device, the temperature of the ring gauge and the temperature of the cooling water are monitored in real time, and the time required to reduce the temperature difference between the ring gauge and the cooling water to the minimum value is taken as the minimum value of the time period T.

[0007] As a preferred solution, the parts cooling circulating water circuit and the ring gauge constant temperature circulating water circuit are provided with circulating pumps and valves for controlling the flow rate of each circulating water circuit.

[0008] As a preferred solution, the flow rate of cooling water in the ring gauge constant temperature circulation water circuit is controlled by a valve so that at the end of time period T, the temperature of the constant temperature device and the temperature of the cooling water in the machine tool cooling water tank remain consistent.

[0009] As a preferred solution, the flow rate of cooling water in the constant temperature circulation water circuit of the ring gauge is controlled by a valve so that the end time of time period T is close to the end time of each part being processed on the machine tool.

[0010] A system for reducing the temperature difference between a ring gauge and a part to be measured, comprising a machine tool with a cooling water tank and a constant temperature device, wherein a part cooling circulating water circuit and a ring gauge constant temperature circulating water circuit are connected to an interface of the cooling water tank, and a circulating pump and a valve are arranged on the part cooling circulating water circuit and the ring gauge constant temperature circulating water circuit; The constant temperature device comprises a heat exchange channel and a ring gauge accommodating cavity which are separated and heat-conducting to each other, and the heat exchange channel is connected in series to the constant temperature circulation water path of the ring gauge.

[0011] As a preferred solution, the thermostatic device comprises an upper cover and a base, the ring gauge accommodating cavity is arranged on the upper side of the upper cover, and when the base and the upper cover are closed, a heat exchange channel surrounding the ring gauge accommodating cavity is formed between the two. The heat exchange channel is divided by the inner wall of the upper cover, the inner wall of the base and a partition fixed in the base; Each partition is annular and has an overflow groove; multiple partitions are concentric and nested in sequence to form an annular cavity; adjacent annular cavities are connected through the overflow groove to form the heat exchange channel, and the base is provided with a water inlet and a water outlet respectively connecting the innermost and outermost annular cavities.

[0012] As a preferred solution, the overflow grooves on adjacent partitions are in opposite directions.

[0013] As a preferred embodiment, the ring gauge accommodating cavity is annular, and has an inner circle heat exchange wall, an outer circle heat exchange wall and an end face heat exchange wall forming the ring gauge accommodating cavity on the upper cover. One side of each wall contacts the corresponding position of the ring gauge, and the other side is an annular cavity in contact with it.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Instead of the conventional method of cooling by room temperature, the machine tool cooling water is directly used as the constant temperature medium to keep the temperature of the ring gauge and the processed parts consistent, thereby ensuring the part detection accuracy and processing accuracy; 2. Directly use the cooling water of the machine tool, without the need for additional constant temperature equipment or the construction of a constant temperature testing room. After the parts are processed, there is no need to wait for constant temperature before testing, which reduces production investment costs and time costs and improves testing efficiency.

[0015] 3. A circulating water channel is set inside the device, which has a good convective heat exchange effect; while the ring gauge is synchronized with the machine tool cooling water temperature, it is physically isolated from the cooling water to prevent the ring gauge from rusting when exposed to water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is an overall schematic diagram of the system of the present invention; Figure 2 It is an axial schematic diagram of the thermostatic device in the present invention; Figure 3 It is a cross-sectional schematic diagram of the constant temperature device in the present invention; Figure 4 It is a top view schematic diagram of the base in the present invention; Figure 5 It is a cross-sectional schematic diagram of the upper cover in the present invention.

[0018] Reference numerals: 100. Cooling water tank; 200, circulation pump; 300, valve; 400. Constant temperature device; 401, upper cover, 402, base, 403, water exchange channel, 404, ring gauge accommodating cavity, 405, partition, 406, overflow groove, 407, water inlet hole, 408, water outlet hole, 409 screw hole; 4011, inner circle heat exchange wall, 4012, outer circle heat exchange wall, 4013, end surface heat exchange wall; 500, Ring Gauge; 600. Parts. DETAILED DESCRIPTION

[0019] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0020] It should be noted that: unless otherwise defined, the technical terms or scientific terms used in this document shall have the usual meanings understood by people with ordinary skills in the field to which the invention belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of the present invention do not express quantity restrictions, but indicate the existence of at least one; the words "first", "second" and "third" used in this document shall not be regarded as restrictions on the order of components, but are only used to distinguish different components; words such as "include" or "comprise" and the like indicate that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, but do not exclude other elements or objects with the same function.

[0021] In order to more clearly describe the method and system for reducing the temperature difference between the ring gauge and the part to be measured, Figure 1-5 Describe this embodiment: like Figure 1 As shown, a method for reducing the temperature difference between a ring gauge and a part to be measured comprises the following steps: Step 1: On the basis of a parts cooling circulating water circuit in the machine tool cooling water tank 100, a ring gauge constant temperature circulating water circuit is constructed to form a double circulation, and a constant temperature device 400 is connected to the ring gauge constant temperature circulating water circuit; Control the cooling water after cooling the parts during the machining process to flow back to the cooling water tank 100 of the machine tool through the parts cooling circulation water circuit; Control the cooling water in the machine tool cooling water tank 100 to circulate synchronously in the ring gauge constant temperature circulation water circuit and the constant temperature device, and reduce the temperature difference between the constant temperature device 400 and the part 600 through heat exchange; Step 2: during the processing of the part 600, the ring gauge 500 is placed in the constant temperature device 400 and maintained for a period of time T. During the period of time T, the temperature of the ring gauge 500 and the part 600 are made consistent under the action of the double cycle; Step 3: After the processing of the part 600 is completed, the ring gauge 500 with sufficient heat exchange is used to directly measure the size of the part 600; After one part is measured, the ring gauge 500 is placed in the constant temperature device 400, and the machine tool is controlled to continue processing a new part and wait for the next measurement.

[0022] In this method, the ring gauge 500 is placed in a thermostat 400, which is connected to the cooling water circuit of the machine tool cooling water tank 100. During the machining process of the machine tool, the cooling water and the machined part 600 are heat-conducted, the water for cooling the part enters the cooling water tank 100 for circulating heat exchange, and the cooling water enters the thermostat 400 for internal circulation, ensuring that the temperature of the ring gauge 500 is consistent with the temperature of the cooling water, thereby ensuring that the temperature of the ring gauge 500 is consistent with the temperature of the part 600 during the machining process. After the machining is completed, there is no temperature difference between the part and the ring gauge, and the size can be measured directly by comparing the ring gauge, avoiding the measurement error caused by the temperature difference between the ring gauge and the part.

[0023] In the above method, after the ring gauge 500 is placed in the constant temperature device 400, a certain heat exchange time T is required. The temperature of the ring gauge 500 and the temperature of the cooling water (it is best to select the cooling water close to the part processing) are monitored in real time. The time required to reduce the temperature difference between the ring gauge 500 and the cooling water to the minimum value is taken as the minimum value of the time period T. When the same type of parts are processed subsequently, it is only necessary to ensure that the ring gauge is placed in the constant temperature device for a sufficient time period T.

[0024] The parts cooling water circuit and the ring gauge thermostatic water circuit are provided with a circulation pump 200 and a valve 300 for controlling the flow rate of each circulation water circuit. When the system is initially set up, the flow rate of the cooling water in the ring gauge thermostatic water circuit is controlled by the valve 300 to balance the speed of heat exchange so that at the end of the time period T, the temperature of the thermostatic device 400 and the temperature of the cooling water in the cooling water tank 100 remain the same.

[0025] During specific use, the valve 300 is used to control the flow rate of cooling water in the constant temperature circulation water circuit of the ring gauge to balance the speed of heat exchange so that the end time of time period T is close to the end time of each part 600 being processed on the machine tool, thereby ensuring the efficiency of the use of the ring gauge 500.

[0026] A method for reducing the temperature difference between a ring gauge and a part to be measured, comprising a machine tool having a cooling water tank 100 and a constant temperature device 400, wherein a part cooling circulating water circuit and a ring gauge constant temperature circulating water circuit are connected to an interface of the cooling water tank 100, and a circulating pump 200 and a valve 300 are arranged on the part cooling circulating water circuit and the ring gauge constant temperature circulating water circuit; The thermostatic device 400 comprises a heat exchange channel 403 and a ring gauge accommodating chamber 404 which are separated and conduct heat to each other, and the heat exchange channel 403 is connected in series to the constant temperature circulation water path of the ring gauge.

[0027] See also Figure 2 , Figure 3 and Figure 4The thermostatic device 400 includes an upper cover 401 and a base 402. The ring gauge accommodating cavity 404 is arranged on the upper side of the upper cover 401. When the base 402 and the upper cover 401 are closed, a heat exchange channel 403 surrounding the ring gauge accommodating cavity 404 is formed between the two. The heat exchange channel 403 is separated by the inner wall of the upper cover 401, the inner wall of the base 402 and a partition 405 fixed in the base 402. Screw holes 409 are arranged at the edge positions of the upper cover 401 and the base 402, and installation and disassembly are performed by matching screws.

[0028] See also Figure 4 Specifically, each partition 405 is annular, and each partition 405 has an overflow groove 406; multiple partitions 405 are concentric and nested in sequence to form an annular cavity; adjacent annular cavities are connected through the overflow groove 406 to form a heat exchange channel 403, and the base 402 is provided with a water inlet hole 407 and a water outlet hole 408 that are connected to the innermost and outermost annular cavities respectively. The cooling water enters the outermost annular cavity through the water inlet hole 407, and then flows inward layer by layer through the overflow groove 406, and is finally discharged from the water outlet hole 408. In this process, heat is exchanged with the ring gauge 500 through the upper cover 401.

[0029] In the above embodiment, in order to ensure the efficiency of heat exchange and to allow the cooling water to fill the annular groove, the overflow grooves 406 on adjacent partitions 405 are designed to be in opposite directions.

[0030] See also Figure 5 The ring gauge accommodating cavity 404 is annular, and has an inner circle heat exchange wall 4011, an outer circle heat exchange wall 4012 and an end face heat exchange wall 4013 forming the ring gauge accommodating cavity 404 on the upper cover 401. One side of each wall contacts the corresponding position of the ring gauge 500, and the other side is an annular cavity in contact with it. After the ring gauge 500 is placed in the constant temperature device 400, the inner circle heat exchange wall 4011, the outer circle heat exchange wall 4012 and the end face heat exchange wall 4013 are in contact with the inner diameter, outer diameter and lower end face of the ring gauge, and the constant temperature efficiency is higher.

[0031] The base material of the thermostat 400 is aluminum or copper, which has a high heat conduction rate.

[0032] The parts not described in detail in the above embodiments are prior art.

[0033] It should be noted that although the present invention is described by the above embodiments, the present invention may also have other various embodiments. Without departing from the spirit and scope of the present invention, it is obvious that those skilled in the art may make various corresponding changes and deformations to the present invention, but these changes and deformations should all fall within the scope of protection of the appended claims of the present invention and their equivalents.

Claims

1. A method for reducing the temperature difference between a ring gauge and a part to be measured, characterized in that: The following steps are involved: Step 1: On the basis of a parts cooling circulating water circuit in the machine tool cooling water tank, a ring gauge constant temperature circulating water circuit is constructed to form a double circulation, and a constant temperature device is connected to the ring gauge constant temperature circulating water circuit; Control the cooling water after cooling the parts during the processing to flow back to the machine tool cooling water tank through the parts cooling circulation water circuit; Controlling the cooling water in the cooling water tank of the machine tool to circulate synchronously in the constant temperature circulation water circuit of the ring gauge and the constant temperature device, and reducing the temperature difference between the constant temperature device and the parts through heat exchange; Step 2: during the processing of the parts, the ring gauge is placed in the constant temperature device and maintained for a period of time T. During the period of time T, the temperature of the ring gauge and the part are made consistent under the action of the double cycle; Step 3: After the parts are processed, use a ring gauge with sufficient heat exchange to directly measure the size of the parts.

2. A method for reducing the temperature difference between a ring gauge and a part to be measured according to claim 1, characterized in that: The thermostatic device is provided with a heat exchange channel for cooling water to flow and a ring gauge accommodating cavity inside, and the heat exchange channel and the ring gauge accommodating cavity are separated and conduct heat to each other.

3. A method for reducing the temperature difference between a ring gauge and a part to be measured according to claim 1, characterized in that: After the ring gauge is placed in the constant temperature device, the temperature of the ring gauge and the temperature of the cooling water are monitored in real time, and the time required for the temperature difference between the ring gauge and the cooling water to be reduced to the minimum value is taken as the minimum value of the time period T.

4. A method for reducing the temperature difference between a ring gauge and a part to be measured according to claim 1, characterized in that: The parts cooling circulating water circuit and the ring gauge constant temperature circulating water circuit are equipped with circulating pumps and valves for controlling the flow rate of each circulating water circuit.

5. A method for reducing the temperature difference between a ring gauge and a part to be measured according to claim 4, characterized in that: The flow rate of cooling water in the ring gauge constant temperature circulation water circuit is controlled by a valve so that at the end of time period T, the temperature of the constant temperature device is consistent with the temperature of the cooling water in the machine tool cooling water tank.

6. A method for reducing the temperature difference between a ring gauge and a part to be measured according to claim 4, characterized in that: The flow rate of cooling water in the ring gauge constant temperature circulation water circuit is controlled by a valve so that the end time of time period T is close to the end time of each part being processed on the machine tool.

7. A system for reducing the temperature difference between a ring gauge and a part to be measured, characterized in that: The invention comprises a machine tool having a cooling water tank (100) and a constant temperature device (400), wherein a parts cooling circulating water circuit and a ring gauge constant temperature circulating water circuit are connected to an interface of the cooling water tank (100), and a circulating pump (200) and a valve (300) are arranged on the parts cooling circulating water circuit and the ring gauge constant temperature circulating water circuit; The constant temperature device (400) comprises a heat exchange channel (403) and a ring gauge accommodating cavity (404) which are separated and conduct heat to each other, and the heat exchange channel (403) is connected in series to the constant temperature circulation water channel of the ring gauge.

8. A system for reducing the temperature difference between a ring gauge and a part to be measured according to claim 7, characterized in that: The thermostatic device comprises an upper cover (401) and a base (402); a ring gauge accommodating cavity (404) is arranged on the upper side of the upper cover (401); and when the base (402) and the upper cover (401) are closed, a heat exchange channel (403) surrounding the ring gauge accommodating cavity (404) is formed between the two. The water exchange channel (403) is divided by the inner wall of the upper cover (401), the inner wall of the base (402), and a partition (405) fixed inside the base (402); Each partition (405) is annular, and each partition (405) has an overflow groove (406); a plurality of partitions (405) are concentric and nested in sequence to form an annular cavity; Adjacent annular cavities are connected via the overflow groove (406) to form the water exchange channel (403), and the base (402) is provided with a water inlet (407) and a water outlet (408) respectively connected to the innermost and outermost annular cavities.

9. A system for reducing the temperature difference between a ring gauge and a part to be measured according to claim 8, characterized in that: The overflow grooves (406) on adjacent partitions (405) are in opposite directions.

10. A system for reducing the temperature difference between a ring gauge and a part to be measured according to claim 8, characterized in that: The ring gauge accommodating cavity (404) is annular, and has an inner circle heat exchange wall (4011), an outer circle heat exchange wall (4012) and an end surface heat exchange wall (4013) on the upper cover (401) to form the ring gauge accommodating cavity (404), one side of each wall being in contact with a corresponding position of the ring gauge, and the other side being an annular cavity in contact with the ring gauge.

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