Cooling device for thermal expansion cutter handle

Abstract

The utility model relates to a thermal expansion knife handle cooling device which comprises a base and a cooling sleeve, a plurality of inserting holes used for inserting thermal expansion knife handles are formed in the table top of the base, an installation frame is vertically arranged at the rear end of the table top of the base, and a plurality of hanging rod assemblies are installed on the upper portion of the installation frame at intervals in the transverse direction. A cooling sleeve used for being arranged on the thermal expansion cutter handle in a sleeving mode is hung on the hanging rod assembly and connected with a cooling-water machine through a pipeline. The device is compact in structure, rapid cooling of the thermal expansion cutter handle can be achieved, and the cooling time of the thermal expansion cutter handle is shortened.

Description

Technical Field

[0001] This utility model relates to a cooling device for thermally expanded tool holders. Background Technology

[0002] Thermal expansion tool holders utilize an induction coil to heat the clamping portion of the tool holder, expanding its inner diameter before the tool is inserted. Upon cooling, the tool holder contracts to clamp the tool tightly, creating a powerful clamping force capable of withstanding extremely high torque. This clamping method eliminates the need for any mechanical clamping components, ensuring a close fit between the tool and the tool holder. It is particularly suitable for high-speed cutting and deep cavity machining, providing high precision and stable machining results.

[0003] After the cutting tool is installed, the thermal expansion tool holder needs to cool to around room temperature before being installed on the equipment. This cooling process is usually natural and takes 1 to 2 hours, which is slow and seriously affects the subsequent use of the thermal expansion tool holder and the machining equipment. Therefore, a thermal expansion tool holder cooling device is needed. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for hot-expanded tool holders. This device has a compact structure and can achieve rapid cooling of hot-expanded tool holders, thus shortening the cooling time.

[0005] The technical solution of this utility model is as follows: a cooling device for a thermally expanded tool holder, comprising a base and a cooling sleeve. The platform of the base is provided with a plurality of insertion holes for inserting the thermally expanded tool holder. A mounting frame is vertically provided at the rear end of the platform of the base. A plurality of hanging rod assemblies are installed at horizontal intervals on the upper part of the mounting frame. A cooling sleeve for fitting onto the thermally expanded tool holder is suspended on the hanging rod assembly. The cooling sleeve is connected to a chiller via a pipeline.

[0006] Furthermore, the hanging rod assembly includes a fixing plate, on the front side of which a pair of hanging rods arranged side by side are longitudinally fixed, and the fixing plate is connected to the mounting bracket.

[0007] Furthermore, hook plates are provided on the upper and lower parts of the rear side of the fixing plate, and the mounting bracket is provided with slots for the hook plates to engage.

[0008] Furthermore, a fixing bolt that is screwed onto the mounting bracket is longitudinally inserted through the middle of the fixing plate.

[0009] Furthermore, the front end of the hanging rod has a curved portion that bends upwards.

[0010] Furthermore, a cooling pipe is provided inside the cooling sleeve. One end of the cooling pipe is connected to the outlet of the chiller via an inlet pipe, and the other end of the cooling pipe is connected to the return outlet of the chiller via a return pipe.

[0011] Furthermore, a thermocouple is fixed to one end of the cooling sleeve.

[0012] Furthermore, a radial groove is provided at one end of the cooling sleeve, and the thermocouple is fixed to the side of the radial groove near the inner ring of the cooling sleeve by bolts.

[0013] Furthermore, the cooling sleeve is a metal sleeve.

[0014] Furthermore, the base is a hollow shell, and the insertion holes are arranged on the top plate of the hollow shell.

[0015] Compared with the prior art, the present invention has the following advantages: the device has a compact structure and can achieve rapid cooling of the hot-expanded tool holder, shortening the cooling time of the hot-expanded tool holder. The cooling time of the hot-expanded tool holder can be reduced from the original 1-2 hours to about 10 minutes, which greatly improves the cooling speed and helps to enable the hot-expanded tool holder to be put into subsequent use quickly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a side sectional view of the present invention;

[0018] Figure 3 This is a top view of the base of this utility model;

[0019] Figure 4 For the present utility model Figure 2 Enlarged view of area A;

[0020] Figure 5 This is a schematic diagram of the structure of the cooling sleeve of this utility model;

[0021] Figure 6 This is a cross-sectional view of the cooling sleeve of this utility model;

[0022] In the diagram: 10-base, 11-socket, 20-cooling sleeve, 21-cooling pipe, 22-inlet pipe, 23-return pipe, 24-thermocouple, 25-radial groove, 26-bolt, 30-mounting bracket, 31-slot, 40-hanging rod assembly, 41-fixing plate, 411-hook plate, 42-hanging rod, 421-bend, 43-fixing bolt, 50-chiller. Detailed Implementation

[0023] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0024] refer to Figures 1 to 6

[0025] A cooling device for a thermally expanded tool holder includes a base 10 and a cooling sleeve 20. The base has several insertion holes 11 on its surface for inserting the thermally expanded tool holder, allowing the connecting seat of the tool holder to be positioned within the holes. A mounting bracket 30 is vertically mounted at the rear end of the base's surface. Several hanging rod assemblies 40 are horizontally spaced on the upper part of the mounting bracket. The hanging rod assemblies suspend the cooling sleeve for fitting onto the thermally expanded tool holder. The cooling sleeve is connected to a chiller 50 via a pipe, allowing the chiller to supply cooling water to the cooling sleeve, reducing its temperature, and subsequently cooling the thermally expanded tool holder.

[0026] In this embodiment, in order to suspend unused cooling sleeves, the hanging rod assembly includes a fixing plate 41, and a pair of hanging rods 42 arranged side by side in the transverse direction are longitudinally fixed on the front side of the fixing plate. The fixing plate is connected to the mounting bracket.

[0027] In this embodiment, to better install the fixing plate, hook plates 411 are respectively provided on the upper and lower parts of the rear side of the fixing plate, and slots 31 are correspondingly provided on the mounting bracket. The hook plates snap into the slots and engage with the mounting bracket.

[0028] In this embodiment, in order to make the connection between the fixing plate and the mounting bracket more secure, a fixing bolt 43 that is screwed onto the mounting bracket is provided longitudinally in the middle of the fixing plate.

[0029] In this embodiment, to prevent the cooling sleeve from slipping off the hanging rod, the front end of the hanging rod has a curved portion 421 that bends upward.

[0030] In this embodiment, a cooling pipe 21 is provided inside the cooling sleeve. One end of the cooling pipe is connected to the outlet of the chiller via a water inlet pipe 22, and the other end of the cooling pipe is connected to the return outlet of the chiller via a water return pipe 23. Thus, the cooling sleeve is cooled by cooling water.

[0031] In this embodiment, to better detect the temperature of the cooling sleeve, a thermocouple 24 is fixed to one end of the cooling sleeve. The temperature of the cooling sleeve is detected by the thermocouple to determine the temperature of the thermally expanded tool holder. The thermocouple can be a WT-HD series 304 stainless steel armored cable thermocouple. The thermocouple is connected to a controller mounted on the base via wiring, and the base is equipped with a display screen for displaying the thermocouple temperature.

[0032] In this embodiment, in order to change the installation of the thermocouple, a radial groove 25 is provided at one end of the cooling sleeve, and the thermocouple is fixed to the side of the radial groove near the inner ring of the cooling sleeve by bolts 26.

[0033] In this embodiment, the cooling sleeve is a metal sleeve, which helps to ensure strength and cool the thermally expanded tool holder.

[0034] In this embodiment, in order to dissipate heat from the thermally expanded tool holder, the base is a hollow shell made of metal sheet, and the insertion hole is arranged on the top plate of the hollow shell.

[0035] In this embodiment, the chiller is a small low-temperature chiller.

[0036] In use, turn on the chiller to cool the cooling sleeve, allowing the chiller's output water temperature to reach approximately 18°C. Insert the thermal expansion tool holder into the insertion hole, and place the cooling sleeve over the tool mounting section of the thermal expansion tool holder. The cooling sleeve cools the corresponding thermal expansion tool holder. A thermocouple is used to monitor the temperature of the cooling sleeve, and the detected temperature indicates whether the thermal expansion tool holder has cooled to the required temperature. For example, if the thermocouple detects a temperature of 25°C, the temperature of the thermal expansion tool holder is approximately 30°C. This device can reduce the cooling time of the thermal expansion tool holder from 1-2 hours to approximately 10 minutes, significantly improving the cooling speed.

[0037] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0038] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0039] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0040] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A thermal expansion tool shank cooling device comprising a base and a cooling sleeve, characterized in that, The base is provided with several insertion holes for inserting the hot expanding tool handle, and a mounting rack is vertically arranged at the rear end of the base top, several hanging rod assemblies are horizontally and spacedly arranged at the upper part of the mounting rack, and a cooling sleeve for sleeving the hot expanding tool handle is hung on the hanging rod assembly, and the cooling sleeve is connected with the water chiller through a pipeline.

2. The thermal expansion tool shank cooling device of claim 1, wherein, The hanging rod assembly comprises a fixed plate, and a pair of transversely arranged hanging rods are longitudinally fixed on the front side of the fixed plate.

3. The thermal expansion tool shank cooling device of claim 2, wherein, The upper and lower parts of the rear side of the fixed plate are respectively provided with hook plates, and the mounting rack is provided with notches for hooking the hook plates.

4. The thermal expansion tool shank cooling apparatus of claim 3, wherein, A fixed bolt is longitudinally arranged in the middle part of the fixed plate and is screwed with the mounting rack.

5. The thermal expansion tool shank cooling apparatus according to claim 2, 3 or 4, wherein The front end of the hanging rod has a curved part which is bent upward.

6. The thermal expansion tool shank cooling apparatus of claim 1, wherein, A cooling pipeline is arranged in the cooling sleeve, one end of the cooling pipeline is connected with the water outlet of the water chiller through a water inlet pipe, and the other end of the cooling pipeline is connected with the water return port of the water chiller through a water return pipe.

7. The thermal expansion tool shank cooling apparatus of claim 1, 2, 3, 4, or 6, wherein, One end of the cooling sleeve is fixed with a thermocouple.

8. The thermal expansion tool shank cooling apparatus of claim 7, wherein, A radial slot is arranged at one end of the cooling sleeve, and the thermocouple is fixed on the side of the radial slot which is close to the inner ring of the cooling sleeve through a bolt.

9. The thermal expansion handle cooling device of claim 1, 2, 3, 4, 6, or 8, wherein, The cooling sleeve is a metal sleeve.

10. The thermal expansion handle cooling device of claim 1, 2, 3, 4, 6, or 8, wherein, The base is a hollow shell, and the insertion holes are arranged on the top plate of the hollow shell.

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