Search

DE-202026101675-U1 - Vibration-damped tool holder with internal coolant supply

DE202026101675U1DE 202026101675 U1DE202026101675 U1DE 202026101675U1DE-202026101675-U1

Abstract

Vibration-damped tool holder with internal coolant supply, including: - a main body (10) comprising a first receiving chamber (11), a second receiving chamber (12) and an adjustment threaded bore (13), wherein the first and second receiving chambers (11, 12) are arranged in the main body (10) and each extend to the two ends of the main body (10), wherein the adjustment threaded bore (13) is connected to the first and second receiving chambers (11, 12); - a water supply assembly (20) arranged in the second receiving chamber (12) and integrated into the main body (10), wherein the water supply assembly (20) has a water supply pipe (22) integrated into the main body (10) and has a water inlet channel (221) connected to the second receiving chamber (12); - a collet (30) which is arranged in the first receiving chamber (11) and has a tool receiving opening (31) connected to the first receiving chamber (11); - a sleeve (60) that is placed on the main body (10); - a pressure piece (40) arranged in the first receiving chamber (11) and a threaded section (41) screwed into the adjustment threaded bore (13), a pressure head (43) arranged at one end of the threaded section (41) and located in the first receiving chamber (11), a connecting channel (44) arranged inside the pressure piece (40) and connected to the water inlet channel (221), and a [missing information] inside the pressure piece (40) a damping chamber (45) arranged and extending from the printhead (43) to the connecting channel (44); and - a damping assembly (50) comprising a damping spring (51) and a damping element (52) which are received in the damping chamber (45), wherein one end of the damping spring (51) is supported against the pressure piece (40), wherein the damping element (52) is made of a tungsten heavy metal alloy, is supported against the other end of the damping spring (51) and comprises a water supply passage (521), wherein the water supply passage (521) is connected to the connecting channel (44).

Assignees

  • SHIN YAIN IND CO LTD

Dates

Publication Date
20260513
Application Date
20260325
Priority Date
20260325

Claims (10)

  1. Vibration-damped tool holder with internal coolant supply, comprising: - a main body (10) comprising a first receiving chamber (11), a second receiving chamber (12), and an adjustment threaded bore (13), wherein the first and second receiving chambers (11, 12) are arranged within the main body (10) and extend to the two ends of the main body (10), the adjustment threaded bore (13) being connected to the first and second receiving chambers (11, 12); - a water supply assembly (20) arranged within the second receiving chamber (12) and integrated into the main body (10), the water supply assembly (20) comprising a water supply tube (22) integrated into the main body (10) and having a water inlet channel (221) connected to the second receiving chamber (12); - a collet (30) arranged in the first receiving chamber (11) and having a tool receiving opening (31) connected to the first receiving chamber (11); - a sleeve (60) fitted onto the main body (10); - a pressure piece (40) arranged in the first receiving chamber (11) comprising a threaded section (41) screwed into the adjustment threaded bore (13), a pressure head (43) arranged at one end of the threaded section (41) and located in the first receiving chamber (11), a connecting channel (44) arranged inside the pressure piece (40) and connected to the water inlet channel (221), and a damping chamber (45) arranged inside the pressure piece (40) and extending from the pressure head (43) to the connecting channel (44); and - a damping assembly (50) comprising a damping spring (51) and a damping element (52) which are received in the damping chamber (45), wherein one end of the damping spring (51) is supported against the pressure piece (40), wherein the damping element (52) is made of a tungsten heavy metal alloy, is supported against the other end of the damping spring (51) and comprises a water supply passage (521), wherein the water supply passage (521) is connected to the connecting channel (44).
  2. Tool holder according to Claim 1 , characterized in that the pressure piece (40) comprises an insertion section (42) which is arranged at one end of the threaded section (41) opposite the print head (43), wherein the insertion section (42) is inserted into the water inlet channel (221) such that the connecting channel (44) is connected to the water inlet channel (221).
  3. Tool holder according to Claim 2 characterized in that a fixing bore (46) is arranged inside the pressure piece (40), which has a polygonal profile and extends from the insertion section (42) to the connecting channel (44) in such a way that it is connected to the connecting channel (44).
  4. Tool holder according to Claim 3 , characterized in that a groove (47) is arranged on the print head (43) of the pressure piece (40) in which a retaining ring (53) is attached, by means of which the damping spring (51) and the damping element (52) of the damping assembly (50) are restricted in the damping chamber (45).
  5. Tool holder according to Claim 4 , characterized in that a sealing groove (48) is arranged on the end part of the print head (43), in which a sealing ring (54) is attached in such a way that it surrounds the water supply passage (521).
  6. Tool holder according to one of the Claims 2 until 5 , characterized in that the print head (43) has an outer diameter and the threaded section (41) has an outer diameter, wherein the outer diameter of the print head (43) is larger than the outer diameter of the threaded section (41).
  7. Tool holder according to Claim 6 , characterized in that the insertion section (42) has an outer diameter, wherein the outer diameter of the insertion section (42) is smaller than the outer diameter of the threaded section (41).
  8. Tool holder according to Claim 7 , characterized in that the main body (10) has a connecting threaded bore (14) which is arranged inside the main body (10) such that it is located in the central section of the main body (10) and is directly connected to the adjusting threaded bore (13) and the second receiving chamber (11); that the water supply assembly (20) comprises a connecting threaded bushing (21) which is screwed into the connecting threaded bore (14), wherein the water supply pipe (22) is inserted into the connecting threaded bushing (21).
  9. Tool holder according to Claim 1 , characterized in that the main body (10) has a connecting threaded bore (14) which is arranged inside the main body (10) such that it is located in the central section of the main body (10) and is directly connected to the adjusting threaded bore (13) and the second receiving chamber (11); that the water supply assembly (20) comprises a connecting threaded bushing (21) which is screwed into the connecting threaded bore (14), wherein the water supply pipe (22) is inserted into the connecting threaded bushing (21).
  10. Tool holder according to Claim 1 , characterized in that the print head (43) has an outer diameter and the threaded section (41) has an outer diameter, wherein the outer diameter of the print head (43) is larger than the outer diameter of the threaded section (41).

Description

The invention relates to a tool holder for machining, in particular a vibration-damped tool holder with internal coolant supply, in which vibrations generated during the machining of workpieces can be dampened. When machining workpieces, strong counterforces often act on the tool holder, generating vibrations during the machining process. Generally, vibrations at tool holders are unavoidable when machining workpieces. For tool holders used to machine large workpieces, and therefore longer, the resulting vibrations not only reduce machining efficiency and lead to a rougher surface with noticeable machining marks, but also cause noise. A conventional tool holder with internal coolant supply comprises a main body, a water supply assembly, and a tool support element. A tool for machining workpieces is mounted at one end of the main body. The water supply assembly is located inside the main body, near the other end. The tool support element is positioned inside the main body to support the tool. The conventional tool holder with internal coolant supply of the type mentioned above is not equipped with any vibration damping structure, which means that vibrations at the tool holder, which occur when machining large or hard workpieces, impair the machining quality. The invention is based on the objective of creating a vibration-damped tool holder with internal coolant supply, in which vibrations generated during the machining of workpieces are dampened, which contributes to an increase in machining quality and a reduction in noise. The object of the invention is achieved by a vibration-damped tool holder with internal coolant supply, comprising the features of claim 1. Advantageous embodiments are the subject of the dependent claims. The vibration-damped tool holder with internal coolant supply according to the invention comprises the following: a main body comprising a first receiving chamber, a second receiving chamber and an adjustment threaded bore, wherein the first and second receiving chambers are arranged in the main body and each extend to the two ends of the main body, the adjustment threaded bore being connected to the first and second receiving chambers; a water supply assembly arranged in the second receiving chamber and integrated into the main body, wherein the water supply assembly has a water supply pipe integrated into the main body and has a water inlet channel connected to the second receiving chamber; a collet chuck which is arranged in the first receiving chamber and has a tool receiving opening connected to the first receiving chamber; a sleeve that is placed on the main body; a pressure piece arranged in the first receiving chamber and comprising a threaded section screwed into the adjustment threaded bore, a pressure head arranged at one end of the threaded section and located in the first receiving chamber, a connecting channel arranged inside the pressure piece and connected to the water inlet channel, and a damping chamber arranged inside the pressure piece and extending from the pressure head to the connecting channel; and a damping assembly comprising a damping spring and a damping element which are received in the damping chamber, wherein one end of the damping spring is supported against the pressure piece, wherein the damping element is made of a tungsten heavy metal alloy, is supported against the other end of the damping spring and comprises a water supply passage, wherein the water supply passage is connected to the connecting channel. The vibration-damped tool holder with internal coolant supply according to the invention has the following advantages. According to the invention, the damping assembly is located inside the pressure piece. The damping element of the damping assembly is made of a high-density tungsten heavy metal alloy and has a higher specific gravity compared to the main body. The interaction of the damping element with the damping spring ensures that the vibrations generated during the machining of workpieces are dampened, which leads to This contributes to an increase in processing quality and a reduction in noise. The invention is described in detail below with reference to an exemplary embodiment and the drawing. The drawing shows: 1 a perspective view of a preferred embodiment of a vibration-damped tool holder according to the invention with internal coolant supply, 2 a further perspective view of a preferred embodiment of a vibration-damped tool holder according to the invention with internal coolant supply, 3 a perspective view of a pressure piece and a damping assembly of the tool holder according to the invention in 1 , 4 an exploded view of the pressure piece and the damping assembly in 3 , 5 a sectional view of the tool holder according to the invention in 1 ,and 6 a schematic representation of the tool holder according to the invention in 1 in use, shown in section view. The following section explains the tasks, features, and advantages of the present i