TWI656941B - Adjustable constant-force spring tool holder - Google Patents

Abstract

The utility model relates to an adjustable constant-pressure spring knife handle, which comprises a tool bar collet, a spring conversion device, a center rod, a universal ball head conversion device and a collet structure. One end of the spring conversion device is disposed in the tool holder collet and includes a spring conversion seat, a spring seat, and a plurality of constant force springs. The spring seat is connected to the spring conversion seat and is arranged along a central axis of the spring seat. The plurality of constant force springs Set in the spring seat, the elastic coefficients of the plurality of constant force springs are different from each other. One end of the central rod is connected to the spring conversion device and is arranged along the central axis of the force. The universal ball joint conversion device is connected to the other end of the center rod. The chuck structure is connected to the universal ball head conversion device for clamping a tool. Thereby, the processing pressure can be maintained at a certain value, and the quality of the workpiece can be ensured.

Description

Adjustable constant pressure spring knife handle

The invention relates to a knife handle, in particular to a spring knife handle which can adjust the applied pressure and maintain a constant pressure.

Polishing and grinding, according to different use occasions and required finished products, select polishing tools such as knives, etc. to remove the materials from the workpiece by polishing and grinding tools and abrasive particles to reduce the surface roughness of the workpiece to obtain the required workpiece size And shape, while the surface of the polished workpiece is smooth and has a good reflection effect. However, because the workpiece is gradually consumed during polishing, the traditional tool holder with polishing tool has the disadvantage that the polishing pressure decreases with the increase of the polishing area, so that the surface roughness of the workpiece becomes larger and the fixed value cannot be maintained. As a result, the quality of polishing is also deteriorated.

In view of this, how to maintain a constant pressure when polishing and grinding a workpiece to fix the surface roughness of the workpiece has become the goal of the related industry efforts.

The present disclosure provides an adjustable constant pressure spring knife handle, which includes a constant force spring and a universal ball head conversion device, so that the tool can be used in When polishing and grinding a workpiece, the forces in all directions are maintained at a constant value, thereby providing the advantage of maintaining the quality of polishing and grinding.

The present disclosure provides an adjustable constant pressure spring knife handle, which includes a tool bar collet, a spring conversion device, a center rod, a universal ball head conversion device, and a chuck structure. One end of the spring conversion device is disposed in the tool holder collet and includes a spring conversion seat, a spring seat, and a plurality of constant force springs. The spring seat is connected to the spring conversion seat and is arranged along a central axis of the spring seat. The plurality of constant force springs The elastic constants of the plurality of constant-force springs are different from each other. The spring conversion seat is used to rotate the spring seat, so that one of the plurality of constant-force springs is arranged along a force-applying central axis. One end of the central rod is connected to the spring conversion device and is arranged along the central axis of the force. The universal ball joint conversion device is connected to the other end of the center rod. The chuck structure is connected to the universal ball head conversion device for clamping a tool.

According to the adjustable constant pressure spring knife handle described in the previous paragraph, the number of constant force springs is four. The spring conversion device further includes a spring cover. The spring cover is connected to a plurality of constant force springs. The spring cover includes a spring seat cover and a spring end plate. The spring seat cover is arranged along the central axis of the spring seat. Rotating with the spring seat, the spring end plate is connected to one end of the central rod and is arranged along the central axis of the force. The center rod is a retractable rod. The adjustable constant-pressure spring knife handle further includes a shell, which is connected to the shank collet to receive the other end of the spring conversion device and the center lever, and the center lever is fixed in the shell. The adjustable constant pressure spring blade has a preset pressing distance, and the pressing distance is greater than 0 mm and less than or equal to 5 mm. Universal ball head conversion device includes a universal ball head fixing seat, a positioning spring and a universal ball A positioning spring is sleeved on the outer side of the universal ball head fixing seat, and the universal ball head is rotatably provided on one end of the universal ball head fixing seat. The chuck structure includes a chuck and a chuck cover. The chuck is used to hold a tool, and the chuck cover is covered on the chuck. The deflection angle of the universal ball head with the central axis of the force as the axis is 10 degrees.

100‧‧‧ Adjustable Constant Pressure Spring Knife

110‧‧‧Cutter Collet

120‧‧‧ spring conversion device

121‧‧‧Spring Converter

122‧‧‧Spring seat

123‧‧‧Constant force spring

124‧‧‧Spring cover

125‧‧‧ spring seat cover

126‧‧‧Spring end plate

130‧‧‧Center Rod

140‧‧‧shell

150‧‧‧ universal ball joint conversion device

151‧‧‧Universal ball joint holder

152‧‧‧Positioning spring

153‧‧‧ universal head

160‧‧‧ Collet structure

161‧‧‧Chuck

162‧‧‧Chuck cover

A‧‧‧ force central axis

B‧‧‧ spring seat central axis

θ‧‧‧deflection angle

Fig. 1 shows a perspective view of an adjustable constant pressure spring blade according to an embodiment of the present disclosure; Fig. 2 shows an exploded schematic view of an adjustable constant pressure spring blade according to the embodiment of Fig. 1; Fig. 1 is a sectional view of the adjustable constant-pressure spring blade of the embodiment; and Fig. 4 is another sectional view of the adjustable constant-pressure spring blade of the embodiment according to Fig. 1.

The utility model relates to an adjustable constant-pressure spring knife handle, which comprises a tool bar collet, a spring conversion device, a center rod, a universal ball head conversion device and a collet structure. One end of the spring conversion device is disposed in the tool bar collet, and includes a spring conversion seat, a spring seat, and a plurality of constant force springs. The spring seat is connected to the spring conversion seat and is arranged along a central axis of the spring seat. The spring is arranged in a spring seat, and the elastic coefficients of the plurality of constant force springs are different from each other. The spring conversion seat is used to rotate the spring seat, so that one of the plurality of constant force springs follows. One force is applied to the central axis. One end of the central rod is connected to the spring conversion device and is arranged along the central axis of the force. The universal ball joint conversion device is connected to the other end of the center rod. The chuck structure is connected to the universal ball head conversion device for clamping a tool. Thereby, the adjustable constant pressure spring tool holder can provide a force for the constant pressure of the tool to apply to the workpiece.

In detail, the number of the plurality of constant force springs may be four, and the elastic coefficients are different from each other. With this, the constant-force spring with the elastic coefficient required for processing can be set on the adjustable constant-pressure spring knife handle at one time. When the constant-force spring with a different elastic coefficient needs to be replaced, only the spring conversion device can be used to reduce the processing time. .

The spring conversion device further includes a spring cover. The spring cover is connected to a plurality of constant force springs. The spring cover includes a spring seat cover and a spring end plate. The spring seat cover is arranged along the central axis of the spring seat. The spring end plate rotates, and the spring end plate is connected to one end of the center rod, and is arranged along the central axis of the force, and does not rotate with the spring seat.

The center rod is a retractable rod. The adjustable constant-pressure spring knife handle further includes a shell, which is connected to the shank collet to receive the other end of the spring conversion device and the center lever, and the center lever is fixed in the shell. The adjustable constant pressure spring blade has a preset pressing distance, and the pressing distance is greater than 0 mm and less than or equal to 5 mm.

The universal ball joint conversion device includes a universal ball joint fixing seat, a positioning spring, and a universal ball joint. The positioning spring is sleeved on the outer side of the universal ball joint fixing seat, and the universal ball joint is rotatably disposed in the universal joint. One end of the ball head fixing seat. The chuck structure includes a chuck and a chuck cover. The head cover covers the chuck. The deflection angle of the universal ball head with the central axis of the force as the axis is 10 degrees. With this, when the universal ball joint conversion device deflects, the chuck structure can be deflected accordingly. With the setting of the constant force spring, the pressure of the adjustable constant pressure spring blade can be the same in all directions when processing the workpiece. Therefore, constant pressure processing can be achieved on workpieces of any shape, so that the surface roughness of the workpiece is maintained at a certain value.

With reference to FIG. 1 and FIG. 2, FIG. 1 illustrates a perspective view of an adjustable constant pressure spring knife handle 100 according to an embodiment of the present disclosure, and FIG. 2 illustrates an adjustable constant pressure according to the embodiment of FIG. 1. Explosion diagram of spring knife handle 100. As can be seen from FIG. 1 and FIG. 2, the adjustable constant-pressure spring tool holder 100 includes a tool bar collet 110, a spring conversion device 120, a center rod 130, a housing 140, a universal ball joint conversion device 150, and A collet structure 160.

In detail, one end of the shank collet 110 is used to be connected with an actuating tool. The actuating tool may be a polishing machine, but is not limited thereto.

The spring conversion device 120 includes a spring conversion base 121, a spring base 122, and a plurality of constant force springs 123, and may further include a spring cover 124 including a spring base cover 125 and a spring end plate 126. The universal ball head conversion device 150 includes a universal ball head fixing seat 151, a positioning spring 152, and a universal ball head 153. The collet structure 160 includes a collet 161 and a collet cover 162.

Please refer to FIG. 3, which is a sectional view of the adjustable constant pressure spring knife handle 100 according to the embodiment of FIG. As can be seen from FIG. 3, one end of the spring conversion device 120 is disposed in the tool holder collet 110. The spring seat 122 is connected to the spring conversion seat 121, and a plurality of constant force springs 123 are disposed in the spring seat 122. The middle spring conversion seat 121 is used to rotate the spring seat 122 so that one of the plurality of constant force springs 123 is disposed along a force applying central axis A. One end of the central rod 130 is connected to the spring conversion device 120 and is disposed along the central axis A of the biasing force. The universal ball joint conversion device 150 is connected to the other end of the center rod 130. The chuck structure 160 is connected to the universal ball head conversion device 150 for holding a tool. In this way, the constant force spring 123 and the universal ball joint conversion device 150 enable the adjustable constant pressure spring tool holder 100 to hold the processing tool within a certain pressing process stroke and maintain constant force processing, which can more accurately control the application to the workpiece during processing. Force to get better workpiece quality.

The complex constant-force spring 123 is specially planned. When the pressure is applied, the deformation variable does not change after it reaches a certain value, and the constant-force spring 123 with different elastic coefficients can be planned according to the pressure required for processing to achieve different deformation variables. Therefore, when the adjustable constant pressure spring knife handle 100 is used to polish and grind the workpiece, the pressure applied to the workpiece can be maintained at a constant value, thereby maintaining the surface roughness of the workpiece constant and obtaining better polishing and grinding quality.

The coefficients of elasticity of the plurality of constant force springs 123 are different from each other, and the number of the plurality of constant force springs 123 is four. Therefore, the constant force springs 123 of the elastic coefficients used in a machining stroke can be set as required without removing the tool holder. That is, the spring conversion device 120 can be used to replace the constant force spring 123 for each stroke, reducing the processing time. However, the number of the plurality of constant force springs 123 may be changed according to requirements, and is not limited to this embodiment.

The spring conversion device 120 further includes a spring cover 124, which is connected to a plurality of constant force springs 123, and includes a spring seat cover 125 and a spring end plate 126. The spring seat cover 125 is disposed along the spring seat center axis B. When the spring seat 122 rotates the spring seat 122, as the spring seat 122 rotates, the spring end plate 126 is connected to one end of the center rod 130, and is arranged along the central axis A of the urging force. The spring seat 122 is rotated on the spring seat 121 At this time, it does not rotate with the spring seat 122.

The central rod member 130 is a retractable rod member. The adjustable constant-pressure spring knife handle 100 further includes a shell 140, which is connected to the shank collet 110 to receive the other end of the spring conversion device 120 and the center lever 130, and the center lever 130 is fixed to the shell Position of the central axis of 140. Thereby, the central rod member 130 enables the adjustable constant-pressure spring blade 100 to have a preset compression interval, and the preset compression interval is greater than 0 mm and less than or equal to 5 mm.

With reference to FIG. 3 and FIG. 4, FIG. 4 shows another sectional view of the adjustable constant pressure spring knife handle 100 according to the embodiment of FIG. 1. As can be seen from FIGS. 3 and 4, the universal ball joint conversion device 150 includes a universal ball joint holder 151, a positioning spring 152, and a universal ball joint 153. The positioning spring 152 is sleeved on the outer side of the universal ball head fixing seat 151, and the universal ball head 153 is rotatably provided on one end of the universal ball head fixing seat 151. The collet structure 160 includes a collet 161 and a collet cover 162. The chuck 161 is used for clamping a tool, and the chuck cover 162 is covered on the chuck 161. The yaw angle θ of the universal ball head 153 with the urging center axis A as an axis is 10 degrees. In this way, the chuck structure 160 can be deflected with the universal ball joint conversion device 150, and with the setting of the constant force spring 123, the adjustable constant pressure spring blade 100 can maintain the force in all directions when polishing and grinding the workpiece Constant value, even if the workpiece is consumed during the processing, constant pressure processing can still be achieved on any complex curved surface workpiece, so that the surface roughness of the workpiece can be maintained at a fixed value and the quality of polishing can be ensured.

Although the present disclosure has been disclosed above by way of example, it is not intended to limit the present disclosure. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present disclosure. Retouch, so the scope of protection of this disclosure shall be determined by the scope of the attached patent application.

Claims (10)

An adjustable constant-pressure spring knife handle includes: a tool bar collet; a spring conversion device, one end of which is disposed in the tool bar collet, and includes: a spring conversion seat; a spring seat connected to the spring conversion seat, and It is arranged along a central axis of a spring seat; and a plurality of constant force springs are arranged in the spring seat. The elastic coefficients of the constant force springs are different from each other. The spring conversion seat is used to rotate the spring seat to make the constant forces. One of the springs is provided along a force-applying central axis; a center rod, one end of which is connected to the spring conversion device and is disposed along the force-applying central axis; a universal ball joint conversion device is connected to the other of the center rod One end; and a chuck structure, which is connected to the universal ball head conversion device for clamping a tool. The adjustable constant pressure spring knife handle as described in item 1 of the scope of patent application, wherein the number of the constant force springs is four. The adjustable constant pressure spring knife handle according to item 1 of the scope of patent application, wherein the spring conversion device further includes: a spring cover, the spring cover is connected with the constant force springs, and includes: a spring seat cover, along the spring A central axis of the seat is arranged, and when the spring seat rotates the spring seat, the spring seat rotates along with the spring seat; and a spring end plate is connected to the end of the central rod and is arranged along the force applying central axis. The adjustable constant pressure spring knife handle according to item 1 of the scope of patent application, wherein the center rod is a retractable rod. The adjustable constant pressure spring knife handle as described in item 1 of the scope of patent application, further comprising: a housing connected to the tool holder collet to accommodate the other end of the spring conversion device and the center rod And the central rod is fixed at the central axis position of the casing. The adjustable constant pressure spring knife handle according to item 5 of the scope of application for a patent, wherein the central rod member enables the adjustable constant pressure spring knife handle to have a preset pressure interval. The adjustable constant pressure spring knife handle as described in item 6 of the scope of patent application, wherein the preset pressure interval is greater than 0 mm and less than or equal to 5 mm. The adjustable constant pressure spring knife handle as described in the first patent application range, wherein the universal ball head conversion device includes: a universal ball head fixed seat; a positioning spring sleeved on the universal ball head fixed seat The outside; and a universal ball head which is rotatably disposed at one end of the universal ball head fixing seat. The adjustable constant pressure spring knife handle as described in item 5 of the patent application scope, wherein the chuck structure includes: a chuck for holding the tool; and a chuck cover covering the chuck. According to the adjustable constant-pressure spring knife handle described in item 8 of the scope of the patent application, the deflection angle of the universal ball head with the force-applying central axis as the axis is 10 degrees.