Intermediate cold high-low temperature chuck

Abstract

The utility model discloses a kind of cold high-low temperature chucks, it is related to chuck technical field, solve the chuck in prior art There is the problem that the clamped part is damaged due to lack of cooling and heating device, difficult to adapt to different working condition requirements, easy to cause temperature difference;Including: chuck body, the chuck body includes disc body, disc cover is fixedly arranged on the disc body, three chuck claws are arranged on the disc cover and drive mechanism is arranged on the disc body for driving the movement of the chuck claw;Three sliding limit grooves are provided on the disc cover, each chuck claw is respectively slidingly connected in the sliding limit groove, three sliding limit grooves are evenly distributed along the circumference of the disc cover and form three regions, and an inner cavity is provided in each region;The utility model scheme, design cooling and heating device, difficult to adapt to different working condition requirements, conducive to keeping stable clamping, improve the machining quality of workpiece.

Description

Technical Field

[0001] This utility model belongs to the field of chuck technology, and particularly relates to a medium-cooling high and low temperature chuck. Background Technology

[0002] A chuck, a key mechanical device on a machine tool for clamping workpieces, typically consists of three parts: the chuck body, the moving jaws, and the jaw drive mechanism. Its core working principle is to achieve workpiece clamping and positioning through the radial movement of the moving jaws. Chucks are mainly classified into manual chucks, powered chucks, and electrostatic chucks.

[0003] Currently, commercially available chucks have a significant drawback when installed on machine tools: due to the lack of cooling and heating devices, temperature fluctuations in the clamping area can easily damage the clamped workpiece. This makes existing chucks unsuitable for various working conditions, such as rapid cooling after high-temperature machining or maintaining stable clamping in low-temperature environments.

[0004] In summary, existing chucks suffer from the problem of lacking cooling and heating devices, making them difficult to adapt to different working conditions, and easily causing damage to the clamped parts due to temperature differences. Utility Model Content

[0005] This invention provides a medium-cooling high and low temperature chuck, which can solve the problem that existing chucks lack cooling and heating devices, making it difficult to adapt to different working conditions and easily causing damage to the clamped parts due to temperature differences.

[0006] To achieve the above objectives, a medium-cooling high and low temperature chuck is provided according to an embodiment of the first aspect of this utility model, comprising: The chuck body includes a chuck body, a chuck cover fixedly mounted on the chuck body, three jaws mounted on the chuck cover, and a drive mechanism mounted on the chuck body for driving the jaws to move. The disc cover is provided with three sliding limiting grooves, and each of the claws is slidably engaged in the sliding limiting groove. The three sliding limiting grooves are evenly distributed along the circumference of the disc cover and form three regions, each region having an inner cavity. Each of the inner cavities is provided with a cooling heating cavity and a heat conduction cavity. The cover is fixedly provided with a liquid injection port and a liquid return port at the position corresponding to each cooling heating cavity. Control valves are fixedly provided on the liquid injection port and the liquid return port. A heating rod is fixedly installed in each of the cooling and heating chambers, and the power plug of the heating rod is located on the corresponding plate cover of each section. A heat-conducting copper sheet is fixedly installed in each of the heat-conducting chambers.

[0007] A further improvement is that the driving mechanism includes a bevel gear rotatably mounted on the disc and a conical gear meshing with the bevel gear. The bevel gear has a helical rack on the side away from the conical gear. Each pawl has several slots on its back, and the helical rack is engaged in the slots. When the conical gear rotates, each pawl moves radially synchronously under the drive of the helical rack to fix the workpiece.

[0008] A further improvement is that each of the claws has notches on both sides that are connected to the sliding limiting groove.

[0009] A further improvement is that the end of the bevel gear is provided with a connecting rotation port.

[0010] A further improvement is that the three inner cavities are located inside two adjacent sliding limiting grooves.

[0011] A further improvement is that the disc cover is provided with fixing bolts at the positions corresponding to each area, and the disc cover is fixedly connected to the disc body by the fixing bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model injects an appropriate amount of coolant into the cooling and heating chamber. When the chuck clamps a high-temperature workpiece, the heat carried by the workpiece is transferred to the coolant in the cooling and heating chamber, allowing the workpiece to cool down quickly. This rapid cooling method helps to maintain a stable clamping state between the workpiece and the jaws, avoids problems such as loosening of the clamping due to excessive workpiece temperature, and ensures the smooth progress of the operation.

[0013] (2) In the preheating operation state, a heating rod is fixedly installed in the cooling heating chamber, and a heat-conducting copper sheet is fixedly installed in each heat-conducting chamber. When the heating rod is powered on, it heats the coolant in the cooling heating chamber. The heated coolant conducts heat to the heat-conducting chamber, and then the heat-conducting copper sheet conducts the heat evenly, so that the three areas of the chuck form a preheating zone. At this time, the workpiece to be processed is placed in this preheating zone, which can preheat it, effectively avoid quality problems such as cracks caused by sudden temperature changes, and improve the processing yield of the workpiece. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the entire chuck structure of this utility model; Figure 2 This is a schematic diagram of the structure of the disc cover (after removal) of this utility model; Figure 3 This is a front view schematic diagram of the cross-sectional structure of the disc cover of this utility model.

[0015] Marked in the image: 1. Disc body; 11. Connecting rotating port; 2. Disc cover; 21. Claw; 22. Sliding limiting groove; 23. Fixing bolt; 201. Inner cavity; 202. Cooling and heating cavity; 203. Heat conduction cavity; 204. Liquid injection port; 205. Heating rod; 206. Heat-conducting copper sheet; 207. Liquid return port; 3. Drive mechanism; 31. Bevel gear; 32. Conical gear; 33. Helical rack; 301. Slot. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] like Figures 1 to 3 As shown, a medium-cooling high and low temperature chuck includes: The chuck body includes a chuck body 1, a chuck cover 2 fixedly mounted on the chuck body 1, three jaws 21 mounted on the chuck cover 2, and a drive mechanism 3 mounted on the chuck body 1 for driving the jaws 21 to move. It should be noted that the cover 2 is provided with three sliding limit grooves 22, and each claw 21 is slidably engaged in the sliding limit groove 22. The drive mechanism 3 includes a bevel gear 31 rotatably mounted on the disc body 1 and a bevel gear 32 meshing with the bevel gear 31. The bevel gear 31 has a helical rack 33 on the side away from the bevel gear 32. Each chuck 21 has several slots 301 on its back, and the helical rack 33 is engaged in the slots 301. When the bevel gear 32 rotates, each chuck 21 moves synchronously radially under the drive of the helical rack 33, thereby achieving the clamping of the workpiece. It should be noted that the number of bevel gears 32 can be set to multiple. The end of the bevel gear 32 is provided with a connecting rotation port 11, into which the throttle / motor spindle can be inserted to drive the bevel gear 32. Three sliding limiting grooves 22 are evenly distributed along the circumference of the cover 2 and form three regions, each region having an inner cavity 201; Each inner cavity 201 is provided with a cooling and heating cavity 202 and a heat conduction cavity 203. The three inner cavities 201 are respectively located inside two adjacent sliding limiting grooves 22. The cover 2 is fixedly provided with a liquid injection port 204 and a liquid return port 207 at the position corresponding to each cooling and heating cavity 202. Control valves are fixedly provided on the liquid injection port 204 and the liquid return port 207. During operation, an appropriate amount of coolant can be injected into the cooling and heating cavity 202. In this way, after the workpiece is clamped, the high temperature workpiece can be cooled quickly by transferring heat to the cooling and heating cavity 202, which is beneficial to maintaining stable clamping, etc. A heating rod 205 is fixedly installed in each cooling and heating chamber 202. The power plug of the heating rod 205 is located on the corresponding cover 2 of each section. A heat-conducting copper sheet 206 is fixedly installed in each heat-conducting chamber 203. When the heating rod 205 is powered on, it will heat the coolant in the cooling and heating chamber 202. After heating, the heat is conducted to the heat-conducting chamber 203, and then the heat in the coolant is conducted out by the heat-conducting copper sheet 206, so that the three areas form a preheating area, thereby preheating the workpiece placed in the area and preventing the workpiece from cracking due to sudden temperature change. In this embodiment, there is also a preferred embodiment in which notches are provided on both sides of each claw 21 to cooperate and connect with the sliding limiting groove 22, for engaging each claw 21; In this embodiment, there is also a preferred implementation: the cover 2 is provided with fixing bolts 23 at the positions corresponding to each area, and the cover 2 is fixedly connected to the disc body 1 by the fixing bolts 23, which is used for convenient disassembly and assembly of the cover 2.

[0018] In this embodiment, it should also be noted that the actual dimensions of each component in the application document are selected and installed according to the actual needs on site. Additionally, it should be noted that this application document only addresses the shortcomings of existing chucks, such as the lack of cooling and heating devices, making them difficult to adapt to different working conditions and prone to damage to the clamped parts due to temperature differences; it does not cover other aspects. The working principle of this intercooled high and low temperature chuck is described below: When in use, the new type of chuck drives the bevel gear 31 to rotate by driving the bevel gear 32, which in turn causes each jaw 21 to move radially synchronously along the sliding limit groove 22 under the drive of the helical rack 33, thus completing the clamping action of the workpiece.

[0019] In practical applications, this chuck can present two different states depending on the operational requirements: Under normal operating conditions, an appropriate amount of coolant is injected into the cooling and heating chamber 202. When the chuck clamps a high-temperature workpiece, the heat carried by the workpiece is transferred to the coolant in the cooling and heating chamber 202, allowing the workpiece to cool down rapidly. This rapid cooling method helps maintain a stable clamping state between the workpiece and the jaws 21, avoiding problems such as loosening of the clamp due to excessive workpiece temperature, and ensuring smooth operation.

[0020] In the preheating state, a heating rod 205 is fixedly installed inside the cooling heating chamber 202, and a heat-conducting copper sheet 206 is fixedly installed inside each heat-conducting chamber 203. When the heating rod 205 is energized, it heats the coolant in the cooling heating chamber 202. The heated coolant conducts heat to the heat-conducting chamber 203, and then the heat-conducting copper sheet 206 evenly conducts the heat out, forming a preheating zone in the three areas of the chuck. At this time, placing the workpiece to be processed in this preheating zone allows it to be preheated, effectively avoiding quality problems such as cracks caused by sudden temperature changes, and improving the workpiece's yield.

[0021] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A medium-cooling high and low temperature chuck, comprising: The chuck body includes a chuck body (1), a chuck cover (2) fixedly disposed on the chuck body (1), three jaws (21) disposed on the chuck cover (2), and a drive mechanism (3) disposed on the chuck body (1) for driving the jaws (21) to move. The feature is that the disc cover (2) is provided with three sliding limiting grooves (22), and each of the claws (21) is slidably engaged in the sliding limiting grooves (22). The three sliding limiting grooves (22) are evenly distributed along the circumference of the disc cover (2) and form three regions. Each region is provided with an inner cavity (201). Each of the inner cavities (201) is provided with a cooling and heating cavity (202) and a heat conduction cavity (203). The cover (2) is fixedly provided with a liquid injection port (204) and a liquid return port (207) at the position corresponding to each cooling and heating cavity (202). Control valves are fixedly provided on the liquid injection port (204) and the liquid return port (207). A heating rod (205) is fixedly installed in each of the cooling and heating chambers (202). The power plug of the heating rod (205) is located on the corresponding disk cover (2) of each section. A heat-conducting copper sheet (206) is fixedly installed in each of the heat-conducting chambers (203).

2. The intercooled high and low temperature chuck according to claim 1, characterized in that, The drive mechanism (3) includes a bevel gear (31) rotatably mounted on the disc (1) and a bevel gear (32) meshing with the bevel gear (31). The bevel gear (31) has a helical rack (33) on one side away from the bevel gear (32). Each claw (21) has several slots (301) on its back side. The helical rack (33) is engaged in the slots (301). When the bevel gear (32) rotates, each claw (21) moves radially synchronously under the drive of the helical rack (33) to fix the workpiece.

3. The intercooled high and low temperature chuck according to claim 1, characterized in that, Each of the claws (21) has notches on both sides that are connected to the sliding limiting groove (22).

4. A medium-cooling high and low temperature chuck according to claim 2, characterized in that, The end of the bevel gear (32) is provided with a connecting rotation port (11).

5. A medium-cooling high and low temperature chuck according to claim 1, characterized in that, The three cavities (201) are located inside the adjacent two sliding limiting grooves (22).

6. A medium-cooling high and low temperature chuck according to claim 1, characterized in that, The disc cover (2) is provided with fixing bolts (23) at the corresponding positions of each area, and the disc cover (2) is fixedly connected to the disc body (1) by fixing bolts (23).

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