Pressure measuring tool for machining

Abstract

The utility model relates to the technical field of pressure measurement, and discloses a pressure measurement tool for machining, which comprises a base, a fixed block is fixedly connected to the top of the right side of the base, cylinders are fixedly connected to the left sides of the front and rear ends of the fixed block, a push block is fixedly connected to the output end of each cylinder, and a workpiece is arranged on the right side of each push block. The top of the pushing block is fixedly connected with a connecting pipe. According to the utility model, through performance tests under different pressure states and in a low pressure test, the second pressure gauge can be utilized to monitor pressure in real time, adjust the pressure to a low pressure value required by the test and keep the pressure for a certain time, and observe the performance of a workpiece under low pressure, and the pressure can also be adjusted to a required high pressure value. The pressure change is monitored through the first pressure gauge and the third pressure gauge, and the performance of the workpiece in different working pressure environments can be comprehensively evaluated through multi-pressure state testing, so that whether the workpiece is qualified or not is judged more accurately, and the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure measurement technical field, concretely is a kind of pressure measurement frock for machining. BACKGROUND

[0002] Mechanical processing refers to the process of changing the shape size or performance of workpiece by a mechanical device. According to the difference of processing mode, it can be divided into cutting and pressure processing.

[0003] In mechanical processing, the working performance of many parts depends on specific pressure conditions. For example, the internal pressure of the cylinder of the engine directly affects the power output of the engine. Traditional measuring tools are difficult to meet the needs of complex parts and high-precision measurement, so special pressure measurement frock is needed, which can penetrate into the internal parts or specific parts of the workpiece to accurately measure the pressure distribution and value.

[0004] Only testing the workpiece under a single pressure state, the actual performance of the workpiece in different working pressure environments cannot be understood. Only low-pressure testing, it is difficult to know whether it can maintain good sealing performance, structural stability and other properties under high-pressure environment. If only high-pressure testing, it is not clear about its running condition under low-pressure state, which will lead to one-sidedness in understanding the overall performance of the workpiece, and some potential performance defects may be missed, so that some problems that can only be exposed under specific pressure environment cannot be discovered in time.

[0005] To solve the above problems, a pressure measurement frock for machining is provided. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a pressure measurement frock for machining, which solves the problem that the actual performance of the workpiece in different working pressure environments cannot be understood in the background technology, only low-pressure testing, it is difficult to know whether it can maintain good sealing performance, structural stability and other properties under high-pressure environment. If only high-pressure testing, it is not clear about its running condition under low-pressure state, which will lead to one-sidedness in understanding the overall performance of the workpiece, and some potential performance defects may be missed, so that some problems that can only be exposed under specific pressure environment cannot be discovered in time.

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: A kind of pressure measuring tool for machining, including base, the base right side top is fixedly connected with fixed block, the fixed block front and rear ends left side are all fixedly connected with cylinder, the cylinder output end is fixedly connected with push block, the push block right side is provided with workpiece, push block top is fixedly connected with connecting pipe, the connecting pipe one end is fixedly connected with control valve, the control valve top is fixedly connected with motor, the control valve rear end is fixedly connected with delivery pipe, the delivery pipe top is fixedly connected with first pressure gauge, the delivery pipe rear end bottom is provided with connecting frame, and connecting frame is fixedly connected with base, the delivery pipe rear end is provided with first pipeline, the first pipeline top is fixedly connected with first manual pressure relief valve, the first pipeline rear end is fixedly connected with high pressure safety valve, the base right side is provided with test assembly.

[0008] By adopting the above technical scheme, the workpiece is detected, and then the pressure of the workpiece is tested, so that the stability of the test is guaranteed.

[0009] As a further description of the above technical scheme: the test assembly includes a second pipeline, the second pipeline is provided with a right rear end, and the second pipeline top is fixedly connected with a second manual pressure relief valve.

[0010] By adopting the above technical scheme, the manual pressure relief valve is controlled.

[0011] As a further description of the above technical scheme: the connecting frame is rotatably connected with a bidirectional threaded rod inside, and the bidirectional threaded rod left and right sides outer circle are all threadedly connected with nut pair.

[0012] By adopting the above technical scheme, the nut pair is moved by the bidirectional threaded rod.

[0013] As a further description of the above technical scheme: the second manual pressure relief valve is fixedly connected with a second pressure gauge on one side, and the second pipeline right side is fixedly connected with a hand control reversing valve.

[0014] By adopting the above technical scheme, the internal pressure is reversed by the hand control reversing valve.

[0015] As a further description of the above technical scheme: the base middle end top is provided with a pressure maintaining valve, and the pressure maintaining valve rear end is fixedly connected with a third pipeline.

[0016] By adopting the above technical scheme, the gas inside can be maintained for how long by the pressure maintaining valve.

[0017] As a further description of the above technical scheme: the third pipeline top middle end is fixedly connected with a third manual pressure relief valve, and the third pipeline front end inside is fixedly connected with a third pressure gauge

[0018] By adopting the technical scheme, manual pressure relief is realized through the second manual pressure relief valve.

[0019] As a further description of the above technical scheme: the clamping plates are fixedly connected with the arc-shaped plates.

[0020] By adopting the technical scheme, the arc-shaped plates are moved and fixed by the clamping plates.

[0021] As a further description of the above technical scheme: the limit rods are in penetration and sliding connection with the nut pairs, and the limit rods are fixedly connected with the connecting frames, and the limit disc is fixedly connected with the outer ring on the right side of the bidirectional threaded rod.

[0022] By adopting the technical scheme, the connecting part of the conveying pipe is fixed by the limit disc and the bolt.

[0023] Compared with the prior art, the utility model has the advantages that:

[0024] 1. The pressure measuring tool for machining can test the performance of the workpiece under low pressure and high pressure through the complex pipeline connection and pressure adjusting system. In the low pressure test, the second pressure gauge is used to monitor the pressure in real time, the pressure is adjusted to the required low pressure value and kept for a certain period of time, the performance of the workpiece under low pressure is observed, and the pressure can also be adjusted to the required high pressure value. The first pressure gauge and the third pressure gauge are used to monitor the pressure change, and the sealing performance of the workpiece under high pressure is observed. The test under multiple pressure conditions can comprehensively evaluate the performance of the workpiece under different working pressure environments, so that whether the workpiece is qualified can be more accurately judged, and the product quality can be ensured.

[0025] 2. The pressure measuring tool for machining can adjust the position of the nut pair by rotating the bidirectional threaded rod, move the clamping plates and the arc-shaped plates, and adjust the clamping position of the workpiece. The pipeline can be quickly installed and disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall rear view structure of the utility model;

[0028] Figure 3 It is an exploded structural schematic diagram of the connecting frame of the utility model.

[0029] In the figure: 1, base; 2, fixed block; 3, air cylinder; 4, workpiece; 5, connecting pipe; 6, control valve; 7, motor; 8, push block; 9, conveying pipe; 10, first pressure gauge; 11, high-pressure safety valve; 12, first pipeline; 13, first manual pressure relief valve; 14, second pipeline; 15, hand-operated reversing valve; 16, second pressure gauge; 17, second manual pressure relief valve; 18, third pipeline; 19, third manual pressure relief valve; 20, third pressure gauge; 21, bidirectional threaded rod; 22, limit disc; 23, nut pair; 24, limit rod; 25, arc plate; 26, clamping plate; 27, connecting frame; 28, pressure maintaining valve. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] In order to further understand the content of the present application, the present application will be described in detail with reference to the drawings.

[0032] With reference to Figure 1 The present application is a kind of pressure measuring tool for machining, including base 1, the right side top of base 1 is fixedly connected with fixed block 2, the left side of the front and rear ends of fixed block 2 is fixedly connected with air cylinder 3, the output end of air cylinder 3 is fixedly connected with push block 8, and the push operation of workpiece 4 can be realized through the telescopic movement of air cylinder 3, and workpiece 4 is arranged on the right side of push block 8.

[0033] With reference to Figure 1 And Figure 2, the push block 8 top fixedly connected with the connecting pipe 5, one end of the connecting pipe 5 fixedly connected with the control valve 6, the control valve 6 in this tool plays a key role in pressure regulation and control of the hub, the control valve 6 top fixedly connected with the motor 7, the control valve 6 rear end fixedly connected with the delivery pipe 9, from the control valve 6 rear end delivery pipe 9, delivery pipe 9 top fixedly connected with the first pressure gauge 10, delivery pipe 9 rear end is provided with the first pipe 12, the first pipe 12 top fixedly connected with the first manual pressure relief valve 13, the first pressure gauge 10 can real-time monitoring of the pressure value in the delivery pipe 9, so that the operator understands the pressure situation, the first pipe 12 rear end fixedly connected with the high pressure safety valve 11, the valve can be manually opened when needed to relieve pressure operation, ensure that the system pressure is within the safe range. The first pipe 12 rear end is connected with the high pressure safety valve 11, the high pressure safety valve 11 as a kind of safety protection device, when the system pressure exceeds its set safety threshold, will automatically open the pressure relief, prevent the safety accident caused by high pressure, the base 1 right side is provided with test assembly, test assembly includes second pipe 14, the second pipe 14 is provided with right rear end, the second pipe 14 top fixedly connected with the second manual pressure relief valve 17, the valve can manually control the pressure release in the second pipe 14, second manual pressure relief valve 17 side fixedly connected with the second pressure gauge 16, the second pipe 14 right side is fixedly connected with hand control reversing valve 15, hand control reversing valve 15 can change the flow direction of the fluid in the pipe, to meet the different test requirements, the base 1 middle end top is provided with pressure retaining valve 28, the pressure retaining valve 28 rear end is fixedly connected with the third pipe 18, the third pipe 18 top middle end is fixedly connected with the third manual pressure relief valve 19, the third pipe 18 front end is fixedly connected with the third pressure gauge 20 inside, can manually operate to relieve pressure, the third pipe 18 front end is installed with the third pressure gauge 20 inside, for monitoring the pressure condition in the third pipe 18

[0034] Referring to Figure 3The bottom of the rear end of the conveying pipe 9 is provided with a connecting frame 27, and the connecting frame 27 is fixedly connected with the base 1. A bidirectional threaded rod 21 is rotatably connected in the connecting frame 27. Nut pairs 23 are threadedly connected to the outer circles of the left and right sides of the bidirectional threaded rod 21. When the bidirectional threaded rod 21 is rotated, the nut pairs 23 move towards or away from each other on the bidirectional threaded rod 21 according to the rotation direction of the threads. The clamping plates 26 are fixedly connected to the top of the nut pairs 23. The arc-shaped plates 25 are fixedly connected between the clamping plates 26. The clamping plates 26 and the arc-shaped plates 25 are driven to move by the movement of the nut pairs 23 to clamp the workpiece or other components that need to be fixed. Limit rods 24 are penetratingly and slidably connected in the nut pairs 23, and the limit rods 24 are fixedly connected with the connecting frame 27. The limit disc 22 is fixedly connected to the outer circle of the right side of the bidirectional threaded rod 21. The limit rods 24 can only move linearly along the axial direction of the nut pairs 23, preventing the nut pairs 23 from rotating with the bidirectional threaded rod 21, and ensuring the stability of the movement of the clamping plates 26. The limit disc 22 can prevent the nut pairs 23 from being detached from the right side of the bidirectional threaded rod 21.

[0035] Working principle: Place the workpiece 4 on the base 1 at the right side of the appropriate position. Start the cylinder 3, and the output end of the cylinder 3 pushes the push block 8 to move left, so as to clamp the workpiece 4 between the push block 8 and the fixed block 2. The motor 7 is started to drive the control valve 6 to work, so that the gas enters the conveying pipe 9 through the connecting pipe 5. The first pipeline 12 is connected with the conveying pipe 9, the pressure of the high-pressure safety valve 11 is adjusted to a fixed value through the control valve 6, and the pressure is detected. The first pipeline 12 is loosened, the second pipeline 14 is connected with the conveying pipe 9, and the hand control reversing valve 15 is opened, so that the gas enters the low-pressure test loop through the second pipeline 14. The second pressure gauge 16 displays the pressure value in the second pipeline 14 in real time. The pressure reaches the required low pressure value by controlling the motor 7 and the control valve 6. Similarly, keep the low pressure state for a certain period of time, observe the performance of the workpiece 4 under low pressure, and continuously monitor the pressure change through the second pressure gauge 16 to further judge whether the workpiece is qualified. The conveying pipe 9 is connected with the third pipeline 18. When the gas fills the system, the pressure maintaining valve 28 is closed, the pressurization is stopped through the motor 7 and the control valve 6, the pressure value in the conveying pipe 9 is displayed in real time through the first pressure gauge 10, and when the pressure reaches the required high pressure value, the pressurization is stopped. Keep this high pressure state for a certain period of time, observe the sealing performance of the workpiece 4 under high pressure, and continuously monitor the pressure change through the third pressure gauge 20 to judge whether the workpiece is qualified. The position of the nut pairs 23 is adjusted by rotating the bidirectional threaded rod 21. The nut pairs 23 move left and right on the bidirectional threaded rod 21, drive the clamping plates 26 and the arc-shaped plates 25 to move, and thus adjust the clamping position of the workpiece 4 to adapt to the test requirements of different workpieces. The conveying pipe 9 is connected with other pipelines.

[0036] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A pressure measuring tool for machining, comprising a base (1), characterised in that: The base (1) right side top fixedly connected with fixed block (2), the fixed block (2) front and back both ends left side are fixedly connected with pneumatic cylinder (3), the pneumatic cylinder (3) output end fixedly connected with push block (8), the push block (8) right side is provided with workpiece (4), the push block (8) top fixedly connected with connecting pipe (5), the connecting pipe (5) one end fixedly connected with control valve (6), the control valve (6) top fixedly connected with motor (7), the control valve (6) rear end fixedly connected with delivery pipe (9), the delivery pipe (9) top fixedly connected with first pressure gauge (10), the delivery pipe (9) rear end bottom is provided with connecting frame (27), and connecting frame (27) and base (1) fixedly connected, the delivery pipe (9) rear end is provided with first pipe (12), the first pipe (12) top fixedly connected with first manual pressure relief valve (13), the first pipe (12) rear end fixedly connected with high pressure safety valve (11), the base (1) right side is provided with test assembly.

2. The pressure measuring tool for machining according to claim 1, characterized in that: The test assembly includes a second pipe (14), the second pipe (14) is provided with a right rear end, the second pipe (14) top fixedly connected with second manual pressure relief valve (17).

3. The pressure measuring tool for machining according to claim 1, characterized in that: The connecting frame (27) is rotatably connected with a bidirectional threaded rod (21) inside, and the left and right sides of the bidirectional threaded rod (21) are both externally threaded with a nut pair (23).

4. The pressure measuring tool for machining according to claim 2, characterized in that: The second manual pressure relief valve (17) is fixedly connected with a second pressure gauge (16) on one side, and the second pipe (14) is fixedly connected with a hand control reversing valve (15) on the right side.

5. The pressure measuring tool for machining according to claim 1, characterized in that: The base (1) is provided with a pressure maintaining valve (28) in the middle top, and the pressure maintaining valve (28) is fixedly connected with a third pipe (18) at the rear end.

6. The pressure measuring tool for machining according to claim 5, characterized in that: The third pipe (18) is fixedly connected with a third manual pressure relief valve (19) at the top middle end, and the third pipe (18) is fixedly connected with a third pressure gauge (20) inside the front end.

7. The pressure measuring tool for machining according to claim 3, characterized in that: The nut pair (23) is fixedly connected with a clamping plate (26) at the top, and the clamping plate (26) is fixedly connected with an arc plate (25) between them.

8. The pressure measuring tool for machining according to claim 3, characterized in that: The nut pair (23) is internally penetrated and slidingly connected with a limiting rod (24), and the limiting rod (24) is fixedly connected with the connecting frame (27), and the right side of the bidirectional threaded rod (21) is fixedly connected with a limiting disc (22).

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