Anti-deformation clamp for annular thin-wall part

Abstract

The utility model relates to an annular thin-wall piece anti-deformation clamp which comprises a pressing disc, a heat exchange pipe is arranged in the pressing disc, a bottom core heat dissipation disc, a heat dissipation ring supporting plate and a bottom heat dissipation ring are evenly arranged on the lower portion of the pressing disc, and the bottom heat dissipation ring, the heat dissipation ring supporting plate and the bottom core heat dissipation disc seal and cover the heat exchange pipe in the pressing disc. And a refrigerating assembly is arranged outside the pressure plate and is connected with the heat exchange pipe in a pipeline refrigerating or heating manner. According to the utility model, the heat exchange tube is arranged in the pressure plate, so that the temperature of the pressure plate and the surrounding can be quickly adjusted, the annular workpiece is tightly attached to the surface of the pressure plate, the temperature transfer performance is better, and the processing environment temperature of the workpiece can be always kept at the appropriate temperature; the pressure plate can perform rapid temperature conversion through the bottom core heat dissipation plate, the heat dissipation ring supporting plate and the bottom heat dissipation ring, the heat exchange performance is good, and the temperature adjustment accuracy is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to aero-engine parts tool equipment field, especially relates to a prevent deformation clamp of annular thin wall spare. BACKGROUND

[0002] The precision of many annular parts in aero-engine is high, and the difficulty in processing is great. The annular part is one of the more important components of aero-engine. Most of the parts have diameters from tens of mm to hundreds of mm, different shapes, wall thicknesses from several mm to tens of mm, and high precision of machining surface size and technical requirements. The general traditional clamping and tightening clamping method cannot guarantee the processing of the parts.

[0003] When processing high-precision annular parts of aero-engine, the metal parts are easily affected by environmental temperature and expand or shrink. Moreover, the environmental temperature difference before and after processing the annular parts is large, and the clamped annular parts are easily deviated in roundness and parallelism after being removed, and are prone to stress deformation caused by temperature factors. INVENTION CONTENTS

[0004] The present application provides a prevent deformation clamp of annular thin wall spare, which aims to solve the technical problem of preventing large deformation of the workpiece by adjusting the temperature during the processing and clamping of the thin-walled annular workpiece.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a prevent deformation clamp of annular thin wall spare, characterized by comprising:

[0006] A pressure plate is provided with a plurality of grooves uniformly distributed thereon, and a condensation groove is arranged at the rear portion of the pressure plate;

[0007] A heat exchange pipe is arranged in the condensation groove of the pressure plate, the inlet and outlet pipe heads of the heat exchange pipe are arranged on the arc surface of the outer circle of the pressure plate, and the heat exchange pipe separates the adjacent two grooves;

[0008] A bottom core heat sink plate is arranged at the center of the bottom of the pressure plate in the form of bolted connection;

[0009] A heat sink ring support plate is arranged outside the bottom core heat sink plate;

[0010] A bottom heat sink ring is arranged outside the heat sink ring support plate, and the bottom heat sink ring, the heat sink ring support plate and the bottom core heat sink plate cover the heat exchange pipe in the pressure plate;

[0011] A refrigeration assembly is arranged outside the pressure plate and connected with the heat exchange pipe by pipeline, and the refrigeration assembly comprises a compressor, a condenser, a liquid storage dryer, a solenoid valve, an expansion valve and a thermostat.

[0012] Preferably, one end of the compressor is connected with the inlet end of the condenser, the other end of the compressor is connected with the outlet end of the heat exchange pipe, the outlet end of the condenser is connected with the inlet end of the liquid storage dryer, the pipeline of the inlet end of the heat exchange pipe is connected with the pipeline of the outlet end of the liquid storage dryer in series with the pipeline after the expansion valve and the electromagnetic valve, and the heat exchange pipe is coiled and distributed in the compression disc.

[0013] Preferably, the thermostat comprises a temperature sensing bag, the temperature sensing bag is connected with the compression disc in close contact, and the temperature sensing bag and the electromagnetic valve are electrically connected with the thermostat.

[0014] Preferably, the expansion valve comprises a measuring sensing bag, and the measuring sensing bag is connected with the outer wall of the pipeline between the compressor and the outlet of the heat exchange pipe in close contact.

[0015] Preferably, the bottom heat dissipation ring, the heat dissipation ring support plate and the bottom core heat dissipation disc are bolt-connected with the compression disc, and the bottom core heat dissipation disc and the bottom heat dissipation ring are both provided with fins.

[0016] Preferably, the heat dissipation ring support plate is uniformly provided with large grooves and small grooves, the number of the large grooves and the small grooves is equal to the number of the strip grooves, the large grooves and the small grooves are correspondingly distributed with the strip grooves, and the large grooves and the small grooves form T-shaped grooves with the strip grooves.

[0017] Preferably, the strip grooves are respectively provided with pressing plates, positioning columns and large bolts.

[0018] The compression disc is provided with the heat exchange pipe, so that the temperature of the surface of the compression disc and the surrounding temperature can be adjusted, the annular workpiece can be directly placed on the surface of the compression disc and positioned through the positioning column and pressed on the compression disc through the pressing plate, temperature transfer is good, the processing environment temperature of the workpiece can be kept at the appropriate temperature, meanwhile, the compression disc can be quickly converted in temperature through the bottom core heat dissipation disc, the heat dissipation ring support plate and the bottom heat dissipation ring, heat exchange performance is good, and temperature regulation accuracy is good. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the front view structural schematic diagram of the utility model;

[0020] Figure 2 is the main section structure schematic diagram of the compression disc of the utility model;

[0021] Figure 3 is the rear view schematic diagram of the utility model; Figure 2

[0022] Figure 4 is the rear view schematic diagram of the utility model; Figure 3 ​A-A direction structural diagram of the heat dissipation ring support plate of the utility model;

[0023] Figure 5 A-A direction structural diagram of the heat dissipation ring support plate of the utility model; Figure 1 A-A direction structural diagram of the heat dissipation ring support plate of the utility model;

[0024] Figure 6 A-A direction structural diagram of the heat dissipation ring support plate of the utility model; Figure 5 A-A direction structural diagram of the heat dissipation ring support plate of the utility model;

[0025] Figure 7 A-A direction structural diagram of the heat dissipation ring support plate of the utility model; Figure 1 A-A direction structural diagram of the heat dissipation ring support plate of the utility model;

[0026] Figure 8 A-A direction structural diagram of the heat dissipation ring support plate of the utility model;

[0027] In the figure: 1 pressure plate, 11 groove, 12 condensation groove, 13 pressing plate, 14 positioning column, 15 large bolt, 2 heat exchange pipe, 21 inlet, 22 outlet, 3 bottom core heat dissipation disc, 4 heat dissipation ring support plate, 41 large groove, 42 small groove, 5 bottom heat dissipation ring, 51 fin, 6 refrigeration assembly, 61 compressor, 62 condenser, 63 liquid storage dryer, 64 solenoid valve, 65 expansion valve, 651 measurement sensor bag, 66 thermostat, 661 temperature sensing bag, 7 machine tool box, 8 workpiece. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In addition, the technical solutions among various embodiments can be combined with each other, but the combination of the technical solutions should be based on the realization of the ordinary skilled in the art, and when the combination of the technical solutions appears contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope required by the utility model.

[0031] The utility model will be further described below in combination with the drawings:

[0032] Referring to Figures 1 to 7 The utility model provides a kind of anti-deformation fixture of annular thin-walled part, comprising: pressure disc 1, heat exchange pipe 2, bottom core heat dissipation disc 3, heat dissipation ring support plate 4, bottom heat dissipation ring 5, refrigeration assembly 6 and machine tool box 7.

[0033] In the following, part structure and principle of the above components according to the fixture will be described in detail.

[0034] As an example, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 And Figure 8 Pressure disc 1 can be made of alloy aluminum material with good thermal conductivity or made of other materials with good thermal conductivity. The pressure disc 1 can be circular, and the pressure disc 1 is uniformly provided with a slot 11. The pressure disc 1 can have 16 slots 11 arranged in a ring array, and the 16 slots 11 can be uniformly distributed around the axis of the pressure disc 1. The slot 11 is respectively distributed with a pressing plate 13, a positioning column 14 and a large bolt 15; 4 uniformly distributed large bolts 15, 4 uniformly distributed positioning columns 14 and 8 uniformly distributed pressing plates 13 are distributed in the 16 slots 11. The pressing plate 13 and the positioning column 14 can be the same as the traditional machine pressing plate structure, and the pressing plate 13 can be slidably connected in the slot 11 in the form of T-shaped groove and T-shaped block sliding cooperation; the upper part of the pressing plate 13 can pass through the middle part of the plate, and the rear part of the plate has a pad block with the same height as the workpiece 8, and the two ends of the plate are respectively placed on the pad block and the workpiece 8, and the screw rod is rotated downward to tightly lock the workpiece 8 on the surface of the pressure disc 1; before locking the workpiece 8, the workpiece 8 can be positioned on the pressure disc 1 by the 4 equally divided positioning columns 14, and then the workpiece 8 can be pressed by the 8 equally divided pressing plates 13; the positioning column 14 and the slot 11 are also slidably connected in the form of T-shaped groove and T-shaped block sliding cooperation. The large bolt 15 can be respectively placed in the 4 equally divided slots 11, and the pressure disc 1 can be connected with the chuck of the machine tool by the 4 equally distributed large bolts 15.

[0035] The bottom of the pressing disc 1 is provided with a condensing groove 12 which is a groove-shaped non-intersecting passage, which can separate two adjacent strip grooves 11, i.e. the heat exchange pipe 2 separates two adjacent strip grooves 11; the heat exchange pipe 2 can be a copper pipe made of copper material with good thermal conductivity, and the inlet 21 and outlet 22 of the heat exchange pipe 2 can be respectively placed on the arc surface of the outer circle of the pressing disc 1 for threaded connection; the heat exchange pipe 2 can be completely placed in the condensing groove 12 and filled and adhesively connected by a good heat-conductive adhesive material.

[0036] The bottom of the pressing disc 1 is provided with a condensing groove 12 which is a groove-shaped non-intersecting passage, which can separate two adjacent strip grooves 11, i.e. the heat exchange pipe 2 separates two adjacent strip grooves 11; the heat exchange pipe 2 can be a copper pipe made of copper material with good thermal conductivity, and the inlet 21 and outlet 22 of the heat exchange pipe 2 can be respectively placed on the arc surface of the outer circle of the pressing disc 1 for threaded connection; the heat exchange pipe 2 can be completely placed in the condensing groove 12 and filled and adhesively connected by a good heat-conductive adhesive material.

[0037] Referring to Figures 1 to 8As shown, the lower end surface of the heat dissipation ring support plate 4 is lower than the fin 51, facilitating ventilation and heat exchange, and the heat dissipation ring support plate 4 is uniformly provided with large grooves 41 and small grooves 42, and the number of the sum of the large grooves 41 and the small grooves 42 is equal to the number of the strip grooves 11; the number of the strip grooves 11 is 16; the number of the large grooves 41 is 12, and the number of the small grooves 42 is 4; the 4 small grooves 42 are aligned with the strip grooves 11 of the large bolts 15 on the pressure plate 1; 8 large grooves 41 are correspondingly distributed with 8 equal parts of the strip grooves 11 of the pressure plate 13, and 4 large grooves 41 are correspondingly distributed with 4 equal parts of the strip grooves 11 of the positioning column 14; the large grooves 41 and the strip grooves 11 form a T-shaped groove; the T-shaped groove of the pressure plate 13 or the positioning column 14 is in the shape of being narrow at the top and wide at the bottom; the strip grooves 11 of the 4 large bolts 15 are in the shape of a T-shaped groove being wide at the top and narrow at the bottom; the width of the small grooves 42 is equal to the width of the T-shaped groove being narrow at the bottom, so that the large bolts 15 can stably press the pressure plate 1, the bottom core heat dissipation plate 3 and the bottom heat dissipation ring 5 on the chuck of the machine tool through the strip grooves 11 on the pressure plate 1.

[0038] In the embodiment of the utility model, after the pressure plate 1 is connected and fixed with the workbench or chuck of the machine tool, the workpiece 8 can be placed on the surface of the pressure plate 1 and positioned by the positioning column 14 which is equally divided into 4 parts, and then the pressure plate 13 which is equally divided into 8 parts is used to press on the pressure plate 1. The workpiece 8 is clamped in the mode of pressing, and the axial stress of the annular workpiece 8 is not easy to deform, and the stability of the pressing is good, and the workpiece 8 is easy to process. The pressure plate 1 can be placed in the machine tool box 7, and after the box door of the machine tool box 7 is closed, the heat exchange pipe 2 in the pressure plate 1 can be connected with the external refrigeration assembly 6 in the mode of pipe connection through the inlet 21 pipe joint and the outlet 22 pipe joint. Generally, the temperature of the pressure plate 1 and the workpiece 8 on the upper part of the pressure plate 1 will rise during processing, so that under this working condition, the pressure plate 1 and the workpiece 8, the heat exchange pipe 2, the bottom core heat dissipation plate 3, the heat dissipation ring support plate 4 and the bottom heat dissipation ring 5 are equivalent to the evaporator in refrigeration, and are used to adjust the temperature of the pressure plate 1 and the workpiece 8. The pressure plate 1 and the workpiece 8 are metal parts, the pressure plate 1 has good thermal conductivity, and the temperature of the workpiece 8 can be quickly adjusted, and the workpiece 8 can be poured with cooling liquid with a set temperature to assist temperature adjustment during processing, so that the workpiece 8 is ensured to be in the temperature range of 20 to 25 degrees before processing, during processing and after processing.

[0039] The refrigeration assembly 6 can include a compressor 61, a condenser 62, a liquid storage dryer 63, a solenoid valve 64, an expansion valve 65 and a thermostat 66. The pipeline of the inlet 21 end of the heat exchange pipe 2 is connected to the outlet end pipeline of the liquid storage dryer 63 after being connected to the expansion valve 65 and the solenoid valve 64 in series. The inlet end of the liquid storage dryer 63 is connected to the outlet end of the condenser 62. The inlet end of the condenser 62 is connected to one end of the compressor 61. The other end of the compressor 61 is connected to the outlet 22 end of the heat exchange pipe 2, forming a refrigeration or heating temperature adjustment pipeline. The heat exchange pipe 2 is coiled and distributed in the pressure disc 1. The pressure disc 1 and the heat exchange pipe 2 function as an evaporator. The temperature sensing bag 661 of the thermostat 66 can be tightly connected to the workpiece accessory of the pressure disc 1. The measurement sensing bag 651 of the expansion valve 65 can be tightly connected to the outer wall of the pipeline between the compressor 61 and the outlet 22 of the heat exchange pipe 2. The thermostat 66 can be electrically connected to the temperature sensing bag 661 and the solenoid valve 64 respectively, so as to facilitate the temperature adjustment of the pressure disc 1 and the workpiece 8. In use, the refrigeration assembly 6 can be a purchased component. The controller of the refrigeration assembly 6 inputs a set temperature. The heat exchange pipe 2 and the pressure disc 1 can keep the machining environment temperature of the annular workpiece 8 at the set temperature, have good heat exchange performance, and have good temperature adjustment accuracy. The bottom core heat dissipation disc 3, the heat dissipation ring support plate 4 and the bottom heat dissipation ring 5 can increase the evaporation of the liquid refrigerant in the heat exchange pipe 2, increase the heat exchange area and improve the heat exchange efficiency. The device is suitable for high-precision part machining in aviation, aerospace and the like. The clamping of parts is simple and convenient. The clamping, positioning and deformation prevention effect of similar ring-shaped parts and other shaped parts in turning and milling machining is extremely obvious. One clamp can replace multiple clamps. The device can be used for batch production of parts, improves the machining efficiency, reduces the number of clamp installation, part clamping and alignment, and reduces the labor intensity of operators.

[0040] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A deformation-resistant clamp for annular thin-walled parts, characterized in that, It includes: The pressure plate is uniformly distributed with a groove, and the rear of the pressure plate is provided with a condensation groove; The heat exchange pipe is placed in the condensation groove of the pressure plate, the inlet and outlet pipe of the heat exchange pipe are placed on the arc surface of the outer circle of the pressure plate, and the heat exchange pipe separates the adjacent two grooves; The bottom core heat dissipation plate is placed in the center of the bottom of the pressure plate in the form of bolt connection; The heat dissipation ring support plate is placed outside the bottom core heat dissipation plate; The bottom heat dissipation ring is placed outside the heat dissipation ring support plate, and the bottom heat dissipation ring, heat dissipation ring support plate and bottom core heat dissipation plate cover the heat exchange pipe in the pressure plate; The refrigeration assembly is placed outside the pressure plate and connected with the heat exchange pipe, which includes compressor, condenser, liquid storage dryer, electromagnetic valve, expansion valve and thermostat.

2. The anti-deformation clamp for a ring-shaped thin-walled member according to claim 1, characterized in that: One end of the compressor is connected with one end of the inlet of the condenser, the other end of the compressor is connected with the outlet end of the heat exchange pipe, the outlet end of the condenser is connected with the inlet end of the liquid storage dryer, the inlet end of the heat exchange pipe is connected with the outlet end of the liquid storage dryer through the pipeline connected with the expansion valve and the electromagnetic valve, and the heat exchange pipe is coiled and distributed in the pressure plate.

3. The anti-deformation clamp for a ring-shaped thin-walled member according to claim 1, characterized by: The thermostat includes a temperature sensing bag, which is tightly connected with the pressure plate, and the temperature sensing bag and the electromagnetic valve are electrically connected with the thermostat.

4. The anti-deformation clamp for a ring-shaped thin-walled member according to claim 1, characterized by: The expansion valve includes a measurement sensing bag, which is tightly connected with the outer wall of the pipeline between the compressor and the outlet of the heat exchange pipe.

5. The anti-deformation clamp for a ring-shaped thin-walled member according to claim 1, characterized by: The bottom heat dissipation ring and the heat dissipation ring support plate and the bottom core heat dissipation plate are bolted to the pressure plate, and the bottom core heat dissipation plate and the bottom heat dissipation ring are provided with fins.

6. The anti-deformation clamp for a ring-shaped thin-wall part according to claim 1, characterized in that: The heat dissipation ring support plate is uniformly distributed with large and small grooves, the number of the sum of the large and small grooves is equal to the number of the grooves, the large and small grooves are correspondingly distributed with the grooves, and the large and small grooves form T-shaped grooves with the grooves.

7. The anti-deformation clamp for a ring-shaped thin-walled member according to claim 6, characterized by: The groove is respectively distributed with a pressure plate, a positioning column and a large bolt.

Images