Assembly press toolholder

Abstract

SOLUTION: A toolholder (10) for a press (100), in particular for an assembly press (100) has: an axis (A11); an actuation member (14); and retaining elements (17a, 17b, 17c, 17d) arranged to retain a tool (20). The toolholder (10) is configured and / or arranged such that the retaining elements (17a, 17b, 17c, 17d) are movable from an activated position to a deactivated position by virtue of a movement in a first direction of the actuation member (14), in particular by virtue of an elementary movement in the first direction of the actuation member (14).SELECTED DRAWING: Figure 9

Description

Technical Field

[0003]

[0001] The present invention relates to a press tool holder. The present invention also relates to a press including the tool holder. The present invention further relates to a method of operating the tool holder.

Background Art

[0002] Press fitting is a well-known technique in the art. It is typically performed using a press or the like, including a tool designed to apply a force to a first part against a second part placed on the frame of the press, thereby causing a structure in which one of the first and second parts penetrates into the other. The tool is usually a dedicated tool that conforms to the shape of the first part and is replaceable to enable the assembly of various types of parts on the same press or the like. For example, during a day, an operator may be called upon to frequently change the tool in order to perform different ranges of assembly.

[0003] The tool change operation may be cumbersome because it requires holding and / or manipulating the tool for a long time in order to properly mount the tool to the tool holder, for example, by screwing. Frequent and repeated tool change operations may eventually cause a risk of musculoskeletal disorders (MSDs) to the operator.

[0004] Patent Document 1 discloses a representative solution of the prior art. The tool of a manual press is fixed to the tool holder using a screw. The screw is screwed into the tool holder in a direction perpendicular to the longitudinal axis of the tool so that the end of the screw can exert a radial force on the tool and hold the tool in a housing formed in the tool holder. Therefore, the tool mounting operation requires holding the tool in the tool holder during the screwing step. For this reason, the operator needs to simultaneously screw the screw and hold the tool in the tool holder during the mounting operation.

[0005] It is also known that tools are screwed directly into tool holders. For this purpose, the tool includes a male thread designed to work with the female thread of the tool holder, or vice versa. In this situation, the operator must manipulate the potentially heavy tool, particularly in rotation and translation, within a confined space.

[0006] Patent Document 2 more specifically discloses a bayonet-type solution suitable for use with a coupler intended to connect interchangeable tools to a portable press device. Thus, the interchangeable tool includes a nesting element designed to cooperate with the retaining element of the tool holder, particularly when the tool is introduced into the tool holder and rotated within it. The nesting element and the retaining element are fixed to the tool and the tool holder, respectively. Thus, operations performed by the operator, particularly the rotation of the tool, enable the cooperation between the nesting element and the retaining element. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 6713010 [Patent Document 2] European Patent Application Publication No. 3424645 [Overview of the project] [Problems that the invention aims to solve]

[0008] The object of the present invention is to provide a tool holder that enables improvements over known prior art tool holders. In particular, the present invention proposes a tool holder that is simple, reliable, and allows for quick fastening of tools to the tool holder. [Means for solving the problem]

[0009] The tool holder according to the present invention is defined in claim 1.

[0010] Embodiments of the tool holder are defined in claims 2 to 10.

[0011] The tool according to the present invention is defined in claim 11.

[0012] The press according to the present invention is defined in claim 12.

[0013] The operating method according to the present invention is defined in claim 13.

[0014] Embodiments of the operating method are defined in claims 14 and 15.

[0015] The attached drawings show, as an example, one embodiment of the press according to the present invention. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is a perspective view of one embodiment of a press. [Figure 2] Figure 2 is a detailed view of the press at the height of the tool holder. [Figure 3] Figure 3 is a view of the tool holder from above. [Figure 4] Figure 4 is a top view of the tool holder, showing elements of the tool holder (which cannot be seen in Figure 3). [Figure 5] Figure 5 is a longitudinal cross-sectional view of the tool holder in plane AA of Figure 3, with the tool holder's retaining element in the operating position. [Figure 6] Figure 6 is a longitudinal cross-sectional view of the tool holder at the BB plane in Figure 3, with the tool holder's holding element in the operating position. [Figure 7] Figure 7 is a longitudinal cross-sectional view of the tool holder in the CC plane of Figure 3, with the tool holder's holding element in the operating position. [Figure 8] Figure 8 is a longitudinal cross-sectional view of the tool holder in the CC plane of Figure 3, with the tool holder's retaining element in the stopped position. [Figure 9] Figure 9 is a longitudinal cross-sectional view of the tool holder in plane AA of Figure 3, with the tool holder's retaining element in the stopped position. [Modes for carrying out the invention]

[0017] An embodiment of the press 100 according to the present invention will be described below with reference to the drawings, particularly FIGS. 1 and 2.

[0018] The press 100 (etc.) is designed to enable the driving of the first part 1 into the second part 2 along the vertical axis A100. In particular, the driving operation consists of causing one first structure of the part to penetrate, particularly by force, into the other second structure of the part.

[0019] To perform the driving operation, the press applies a force to the first part 1 via a tool 20, particularly a driving ring 22. This force is transmitted to the second part 2, then to a support 98 on which the second part 2 is placed, and then to the frame 99 of the press 100 on which the support 98 is placed or fixed.

[0020] The driving ring 22 is particularly - ensuring good positioning, particularly good orientation, of the first part during driving, and - limiting the area of intense pressure on the first part so as not to cause dents on the first part. This makes it possible.

[0021] The support 98 is particularly - ensuring good positioning, particularly good orientation, of the second part during driving, and - limiting the area of intense pressure on the second part so as not to cause dents on the second part. This makes it possible.

[0022] The press 100 includes a tool holder 10 and a tool 20. The tool 20 is mounted on the press 100 using the tool holder.

[0023] Figure 2 illustrates details of the tool holder 10 on which the tool 20 is mounted. The tool holder 10 is fixed, in particular by screws, to a slider 97 which is integrated into the press 100. The slider 97 includes a body having a cylindrical shape, in particular, which includes a geometric axis A97 that coincides with axis A100.

[0024] The translational movement of the slider 97 along axis A100 toward the support part 98, indicated by the thick arrow in Figure 1, moves the tool 20 toward the first part 1 which has been previously positioned on the second part 2 until the tool 20 contacts the first part 1, and then enables assembly by driving the first part 1 into the second part 2.

[0025] The translational speed of the slider 97 along axis A100 and the applied force allow for the forced and / or positional impact of the first part onto the second part, or the contact impact of the first part onto the second part.

[0026] The press 100 is preferably an assembly press, i.e., a press that enables assembly of a first part and a second part, particularly by a pressing process. The press 100 shown in Figure 1 is an automatic press, particularly a servo press, i.e., a press equipped with a servo motor (electric motor and control system). Alternatively, the press 100 may be a manual press, i.e., a press that utilizes energy provided by an operator.

[0027] Figure 3 shows a top view of the tool holder 10 and the tool 20, identifying various planes from which various longitudinal sections (relative to the axis A11 of the tool holder) are taken, as shown in Figures 5 to 9.

[0028] Figure 4 shows the same top view as Figure 3, but exposes the components of the tool holder 10.

[0029] The tool holder 10 is - Having axis A11, - Operating member 14 and, - Retaining elements 17a, 17b, 17c, 17d are adapted to hold the tool 20, Includes.

[0030] The tool holder is configured and / or arranged such that the holding elements 17a, 17b, 17c, and 17d are movable from an operating position to a stopped position by the movement of the operating member 14 in a first direction, particularly by the basic movement of the operating member 14 in a first direction.

[0031] Shaft A11 is preferably intended to coincide with shafts A97 and A100 when the tool holder 10 is mounted on the press 100.

[0032] In particular, Figures 3 and 4 clearly show the actuation member 14 of the tool holder 10, which is articulated by rotation around an axis A14 in a plane perpendicular to the axis A97 of the slider 97 or perpendicular to the axis A11 corresponding to the geometric axis of the housing 11 of the tool holder 10, and which is designed to receive the components of the tool holder 10, as shown in Figures 5 to 9.

[0033] In this configuration, the operating member 14 has a bent shape. The operating member 14 is - An arm or lever 141 to which an operating handle 142 is attached, - A shaft 143 is articulated around axis A14, Includes. Parts 141 and 143 are interconnected or fixed to each other by connecting element 144 in a vertical or substantially vertical manner. The actuating members, in particular lever 141, can be actuated manually by an operator, especially downward.

[0034] As described above, in order to move the holding elements 17a, 17b, 17c, and 17d from the operating position to the stopped position, - Unidirectional from the first contact point to the second contact point, and - Rotation or translation, It is sufficient to move the operating member 14 by the basic movement. In the illustrated embodiment, the movement is rotation. The amplitude of the rotational movement is preferably less than 20° or 10°, particularly about 5°.

[0035] Alternatively, the movement may be translational. The amplitude of the translational movement is preferably less than 100 mm or 50 mm.

[0036] The operator may preferably perform a single operation or gesture to perform the basic movement from the first contact to the second contact. For example, the gesture may be a gesture of the operator's hand, which may be substantially linear or curved. The operator may preferably not need to perform a return movement from the second contact to the first contact. This return is preferably brought about by an elastic return force.

[0037] A combination of two consecutive translational movements, especially in different directions, is not a basic movement. A combination of two consecutive rotational movements, especially in different directions, is not a basic movement. A combination of consecutive rotational and translational movements is not a basic movement.

[0038] The shaft 143 includes a fork 15, which is fixed by screwing to a flat surface 145 formed on the shaft, as can be seen in Figure 4, for example (as can be seen in Figures 7 and 8). The fork 15 is designed to cooperate with a cam 16, which has a hollow cylindrical shape including an axis A16 coaxial with the axis A11 of the housing 11. This cooperation allows the cam 16 to move, particularly translationally, due to the movement of the fork 15. As an alternative to this configuration, the shaft 143 and the fork 15 may be a single unit.

[0039] The housing 11 is formed from an upper frame 12 and a lower frame 13, which are fixed in particular by screws 123, for example, by eight screws 123, in particular by four pairs of screws 123 (as can be seen in Figure 3).

[0040] The cam 16 is preferably guided along the axis A11, at least in translation, by the cooperation of a first tenon 131 formed on the lower frame 13 including the axis A11 and a through hole 161 in the cam 16 on the one hand, and by the cooperation of a second tenon 121 formed on the upper frame 12 including the axis A11 and the opening 161 on the other hand. In this way, the cam can be mounted on the frames 12 and 13 with respect to the axis A16 by sliding and pivot connection.

[0041] Furthermore, the cam 16 includes grooves on its outer circumference at each of its longitudinal ends that define first and second support surfaces 162, 163. The first support surface 162 is designed to cooperate with the fork end 151 of the fork 15 (specifically as can be seen in Figure 4), and the second support surface 163 is designed to drive the retaining element 17, for example, by direct contact.

[0042] As can be seen in Figures 5 to 7, in this embodiment of the tool holder, there are four retaining elements, which preferably take the shape of identical claws 17a, 17b, 17c, and 17d, and are designed to cooperate with the tool 20 to hold the tool 20 within the housing 11 of the tool holder 10.

[0043] The retaining elements 17a, 17b, 17c, and 17d have a bent or L-shaped form. Each of the retaining elements is articulated by rotation at the height of the bend around each axis A17a, A17b, A17c, and A17d, which are arranged radially perpendicular to axis A11, and in particular using each pin 18a, 18b, 18c, and 18d (as can be seen in Figure 4). Thus, the axis lies in a plane or multiple planes of the tool holder 10 perpendicular to axis A11. These claws are preferably evenly distributed around axis A11. In particular, the pins 18a, 18b, 18c, and 18d are arranged radially perpendicular to axis A11 and preferably evenly distributed around axis A11.

[0044] Each of the claws 17a, 17b, 17c, and 17d includes support surfaces 171a, 171b, 171c, and 171d designed to cooperate with the second support surface 163 of the cam 16, particularly by direct contact, and support surfaces 173a, 173b, 173c, and 173d designed to cooperate with the tool 20.

[0045] The support surfaces 171a, 171b, 171c, 171d and the support surfaces 173a, 173b, 173c, 173d are preferably parallel or substantially parallel.

[0046] Support surfaces 171a, 171b, 171c, 171d are formed at one end of the first claw portions 172a, 172b, 172c, 172d, which are oriented radially with respect to axis A11 (in the operating position of the retaining element), and support surfaces 173a, 173b, 173c, 173d are formed at one end of the second portions 174a, 174b, 174c, 174d, which are positioned perpendicular or substantially perpendicular to the first portions 172a, 172b, 172c, 172d.

[0047] These claws 17a, 17b, 17c, and 17d are advantageously elastically biased against the cam 16, particularly against the second support surface 163 of the cam 16, and especially independently of each other. The claws 17a, 17b, 17c, and 17d are biased by separate identical or non-identical springs 19a, 19b, 19c, and 19d, for example, whose return forces may be identical or non-identical. This type of design advantageously allows the claws 17a, 17b, 17c, and 17d to cooperate independently with the tool 20. The retaining elements 17a, 17b, 17c, and 17d are therefore movable relative to their respective axes by the cam 16.

[0048] Here, the springs 19a, 19b, 19c, and 19d have a spiral shape. The springs are preferably arranged parallel to the axis A11. The springs are preferably positioned between the support surface 132 of the lower frame 13 and each of the first claw portions 172a, 172b, 172c, and 172d, and the respective projections 175a, 175b, 175c, and 175d of the first portion, which enable the positioning of the ends of the springs and prevent spring distortion.

[0049] In the first configuration of the tool holder 10, the cooperation between the springs 19a, 19b, 19c, 19d and the pawls 17a, 17b, 17c, 17d allows the tool 20 to be held within the housing 11. Figures 5, 6, and 7 illustrate the first, so-called operating configuration of this type. The holding element is in the operating position.

[0050] In the illustrated embodiment, the tool 20 has a shape configured to cooperate with the tool holder 10, particularly having a support surface 212, a support surface 211, and a perimeter 213. In particular, the tool 20, - Support part 21 and, - Insertion ring 22, The drive ring 22 is fixed to the support portion 21. The shape configured to cooperate with the tool holder 10 is preferably located on the support portion 21.

[0051] Figures 5 and 6 illustrate the support surfaces 173a, 173b, 173c, and 173d of the claws 17a, 17b, 17c, and 17d, respectively, which cooperate with the support surface 211 of the support portion 21 of the tool 20 to press the support surface 212 of the support portion 21 against the support surface 133 of the frame 13, where the support surfaces 211 and 212 are preferably parallel. The support surfaces 133 and 212 are designed to transmit the pressing force. The actuator 14 and fork 15 are themselves held in position by a cam 16 which is elastically biased by springs 19a, 19b, 19c, and 19d via the claws 17a, 17b, 17c, and 17d in the direction of the frame 12. In the first configuration, the support surfaces 171a, 171b, 171c, 171d and support surfaces 173a, 173b, 173c, 173d are advantageously perpendicular to the axis A11 to prevent all risks of the tool 20 being removed from the tool holder 10. In the first configuration, the tool 20 is advantageously centered within the housing 11 through the cooperation of the outer circumference 213 of the support portion 21 and the housing 134 formed on the frame 13 or a component mounted on the frame 13. The circumference 213 and the housing 134 preferably have complementary cylindrical shapes.

[0052] Figure 8 illustrates the stages of operation of member 14, particularly the "downward" operation of the handle 142, which causes the shaft 143 and its fork 15 to rotate clockwise around axis A14, as indicated by the solid arrows in Figure 8. This rotation drives the translational movement of the cam 16 toward the frame 13, in opposition to the action of springs 19a, 19b, 19c, and 19d. This results in the rotation of the pawls 17a, 17b, 17c, and 17d around their respective axes A17a, A17b, A17c, and A17d, thereby allowing the pawls to be separated from the tool 20, particularly from the support 21.

[0053] Figure 9 illustrates, as an example, the claws 17a and 17c retracted from the support 21, i.e., the retaining elements, in particular, in a position where the claws are deactivated. The respective positions of the claws allow for the definition of a second configuration of the tool holder 10, referred to as the mounting / removal configuration. In this second configuration, the support surfaces 173a and 173c are particularly far from the support surface 211, in order to allow movement of surfaces 133 and 212 and to allow removal of the tool 20 from the tool holder 10. This second configuration is achieved by pressing down the handle 142, as the handle 142 is subjected to the return force exerted by springs 19a, 19b, 19c, and 19d, respectively, via the cam 16 and fork 15. When the handle 142 is released, the handle returns to a “high” position due to the action of these springs, which causes counterclockwise rotation of the shaft 143 and its fork 15 around axis A14, as shown by the dotted arrow in Figure 8. Therefore, the actuating member 14 is elastically biased by the elastic elements 19a, 19b, 19c, and 19d, particularly via the cam 16 that kinematically connects the actuating member 14 with the elastic elements 19a, 19b, 19c, and 19d. As a result, the operator does not need to act on the tool holder 20 to return it to the actuating configuration, i.e., to the configuration in which the holding element is in the operating position.

[0054] One embodiment of the method for operating the tool holder according to the present invention is described below.

[0055] The operation method includes the following steps of removing the tool 20 that is pre-mounted in the tool holder 10. - A step in which the operator moves the actuator 14 in the first direction, in particular a basic movement of the actuator 14 in the first direction, said step is followed by the following steps: - A step of stopping the operation of the retaining elements 17a, 17b, 17c, and 17d due to a movement step that leads to the release of the tool 20.

[0056] The step of moving the operating member 14 is a step of movement in the first direction from the first position to the second position, in particular a step of rotation of the operating member 14 in the first direction, in order to move the tool holder to the second configuration and thus enable the removal of the tool 20 that has been pre-loaded in the housing 11 of the tool holder 10.

[0057] To load a new tool 20 into a tool holder 10 that does not currently contain a tool, the operation method includes the following steps, following the steps described above for bringing the retaining element to the stop position (and removing any tools present in the tool holder): - A step of holding the retaining elements 17a, 17b, 17c, and 17d in the stop position. - Steps to introduce tool 20 into tool holder 10, - A step of moving the actuator 14 in a second direction opposite to the first direction, particularly a step of basic movement of the actuator in the second direction. This movement is preferably brought about by elastic return elements 19a, 19b, 19c, 19d when the operator releases the actuator 14. This movement in the second direction reconfigures the tool holder into an operating configuration and brings the retaining element to the working position. Thus the tool holder 10 is configured and / or arranged so that the retaining element can move from the stopped position to the working position by moving the actuator 14 in a second direction opposite to the first direction, particularly by basic movement of the actuator 14 in the second direction.

[0058] Alternatively, to mount a new tool 20 onto a tool holder 10 that does not currently have a tool, the operation method includes the following steps while the holding element is positioned in the working position. - Step of bringing tool 20 and tool holder 10 into contact, - Retracting the retaining elements 17a, 17b, 17c, and 17d, the tool 20 applies force to the tool holder 10 in order to position the tool 20 within the tool holder 10, and - The elastic return elements 19a, 19b, 19c, and 19d move the retaining elements 17a, 17b, 17c, and 17d.

[0059] To perform the retraction operation, the tool and retaining element preferably have a chamfered surface or a cam surface to allow the retaining element to tilt relative to the spring when an axial force (along axis A11) is exerted on the tool holder 10 by the tool 20. This makes it possible to introduce the tool into the housing of the tool holder without prior manipulation of the operating member. In any case, in this situation, the movement of the retaining element causes the movement of the operating member (in the absence of an additional clutch system). Therefore, the tool holder is configured and / or positioned so that the retaining element can move from the operating position (without the tool) to the operating position (with the tool) via the stop position. The movement from the operating position (without the tool) to the stop position is achieved by the tool applying force to the tool holder. The movement from the stop position (with the tool) to the operating position (with the tool) is generated by the action of the elastic return element.

[0060] As a result, movement of the actuating member in the first direction causes separation of the retaining element, or vice versa. Furthermore, movement of the actuating member in the second direction, opposite to the first direction, causes tightening of the retaining element.

[0061] In the illustrated embodiment, the actuating element is articulated around an axis of rotation in one or more planes perpendicular to the geometric axes of the tool holder housing. However, alternatively, the actuating member and / or retaining element may be articulated around an axis of rotation parallel or substantially parallel to the geometric axes of the tool holder housing. For example, the retaining element may be arranged in the same manner as the blades of an iris diaphragm. In this case, the actuating member may be rotatable, for example, around the geometric axes of the tool holder housing.

[0062] More generally, the operating member and / or holding element may be moved by any kind of movement, such as translational movement.

[0063] In addition to the retaining element, the tool holder and / or tool may include foolproof means to ensure the correct angular orientation of the tool relative to the tool holder and / or the tool relative to the first part.

[0064] In the illustrated embodiment, the slider 97 is secured to the tool holder 10 by screwing it through a plate 96, and the plate 96 is secured to the frame 12 by screws 122, in particular by four screws 122 (as can be seen in Figures 3 and 5). Of course, any other assembly solution can be used.

[0065] In the illustrated embodiment, the tool includes a support portion 21, a drive ring 22 designed to contact the first part 1, and an assembly ring 23 designed to allow the drive ring 22 to be secured to the support portion 21, particularly by screwing. Thus, the support portion 21 includes a male thread on its outer wall, designed to cooperate with the female thread of the receiving portion of the assembly ring 23. Of course, the tool 20 may take any other shape. For example, the tool 20 may be a single unit. Alternatively, the tool 20 may take the shape of a more complex assembly, and may include one or more springs, particularly designed to absorb the driving force.

[0066] The first and second parts 1 and 2 are preferably watch parts. In the first embodiment, the first part may be an external part such as a bezel disc, and the second part may be an external part such as a bezel ring. In the second embodiment, the first part may be an external part such as a crystal (including a sealing part if applicable), and the second part may be an external part such as a case (including a sealing part if applicable). The first and second parts may similarly take the shape of movement parts. In the third embodiment, the first part may be a gear, and the second part may be a shaft. In the fourth embodiment, the first part may be a jewel, and the second part may be a movement blank.

[0067] In the illustrated embodiment, the press is for pressing two parts together, particularly two watch parts. A tool holder of this type may also be used with the press to enable riveting or crimping of two parts together.

[0068] In the illustrated embodiment, the tool holder is designed to be operated by an operator. Due to its structure, it may also be operated by an automated device, which may, similarly and advantageously. For example, the device may include a motor, particularly a motor shaft, that directly or indirectly engages with the actuator 14. In particular, the motor may be operated by an operator using auxiliary controls such as a push button. This type of solution may be particularly advantageous depending on the press configuration or environment. The automated device enables the automation of the operation of the actuator.

[0069] Thus, the present invention is not limited to a tool holder in which the operating member 14 can be operated manually.

[0070] The solution described above has the unique characteristic of including an operating member and a retaining element, the retaining element being designed to allow the tool to be mounted or removed from the tool holder by simple manipulation of the operating member.

[0071] In particular, movement of the actuarial member in the first direction causes the retaining elements to move away from each other, thus enabling the removal of the tool from the tool holder, while movement of the actuarial member in the second direction opposite to the first direction causes the retaining elements to tighten, thus enabling the retention or mounting of the tool in the tool holder.

[0072] The first direction may be clockwise, as indicated by the solid arrow in Figure 8, and the second direction may be counterclockwise, as indicated by the dotted arrow in Figure 8. Alternatively, the first direction may be counterclockwise and the second direction may be clockwise.

[0073] The solution described improves user comfort during tool changes, such as when using a press, by proposing a tool holder that optimizes the ease of tool loading and unloading, and minimizes the time required for such operations.

[0074] As described above, the movement of the retaining element in at least one direction is advantageously obtained as a result of the movement of the actuating member, thus differing from known solutions from the prior art, where it is necessary to achieve movement of the tool and / or tool holder in order to enable the movement of the retaining element. In other words, the retaining element is movable relative to the tool holder due to the movement of the actuating member. [Explanation of symbols]

[0075] 10 Tool holders 12 frames 13 frames 14 Operating member 15 Forks 16 Cam 17a, 17b, 17c, 17d retaining elements 18a, 18b, 18c, 18d pins 19a, 19b, 19c, 19d Elastic return elements 20 Tools 21 Support part 22 Insertion rings 100 press 141 Lever 142 Handle 143 Shaft 211 Support surface 212 Support surface 213 Surroundings

Claims

1. An operating member (14) and A retaining element (17a, 17b, 17c, 17d) is positioned to hold the tool (20), A tool holder (10) for a press (100), including, The tool holder (10) is configured and / or arranged such that the holding elements (17a, 17b, 17c, 17d) can move from an operating position to a non-operating position due to the movement of the operating member (14) in the first direction. Tool holder (10).

2. The tool holder (10) is configured and / or arranged such that the holding element can move from a stopped position to an operating position due to the movement of the operating member (14) in a second direction opposite to the first direction. The tool holder (10) according to claim 1.

3. The tool holder is configured and / or arranged such that the holding element can move from a non-operational position to an operational position when the tool (20) is introduced into the tool holder (10). The tool holder (10) according to claim 1.

4. The operating member (14) is articulated by rotation around the axis (A14), and / or The holding elements (17a, 17b, 17c, 17d) are articulated by rotation around the axis (A17a, A17b, A17c, A17d). The tool holder (10) according to claim 1.

5. The retaining elements are claws (17a, 17b, 17c, 17d) characterized by bends, Each claw is articulated by rotation at the height of its own bend, and / or by pins (18a, 18b, 18c, 18d) mounted on the frame (12, 13) of the tool holder (10), and / or The claws (17a, 17b, 17c, 17d) are distributed evenly or substantially evenly around the axis (A11) of the tool holder (10). The tool holder (10) according to claim 1.

6. The retaining elements (17a, 17b, 17c, 17d) are elastically biased by the elastic return elements (19a, 19b, 19c, 19d). The tool holder (10) according to claim 1.

7. The operating member (14) is elastically biased by the elastic return elements (19a, 19b, 19c, 19d). The tool holder (10) according to claim 6.

8. The tool holder includes a cam (16), and the retaining elements (17a, 17b, 17c, 17d) are movable relative to their respective axes by the cam (16). The tool holder (10) according to claim 1.

9. The operating member (14) includes a fork (15), and the cam (16) is movable by the movement of the fork (15). The tool holder (10) according to claim 8.

10. The aforementioned operating member (14) is A lever (141) adapted to be operated, A shaft (143) articulated around an axis (A14), and the shaft (143) including the fork (15) or the shaft (143) and the fork (15) being fixed to each other, Includes, The lever (141) and the shaft (143) are fixed to each other. The tool holder (10) according to claim 1.

11. A support portion (21) configured to cooperate with a tool holder (100) for a press (100), the support portion (21) having a shape and including an operating member (14) and holding elements (17a, 17b, 17c, 17d) arranged to hold a tool (20), wherein the tool holder (10) is configured and / or arranged such that the holding elements (17a, 17b, 17c, 17d) can move from an operating position to a non-operating position due to the movement of the operating member (14) in a first direction, The drive-in ring (22), Tools (20), including the tool.

12. A press (100) including the tool holder (10) described in claim 1.

13. A step performed by the operator to move the operating member (14) in the first direction, The movement step that leads to the release of the tool (20) results in the stopping of the operation of the holding elements (17a, 17b, 17c, 17d), A method for operating the tool holder (10) according to claim 1, including the following:

14. A first movement step of the operating member (14) in the first direction, performed by the operator, A step of stopping the operation of the holding elements (17a, 17b, 17c, 17d) due to the first movement step, The steps include introducing the tool (20) into the tool holder (10), A second movement step of the operating member (14) in a second direction opposite to the first direction by elastic return elements (19a, 19b, 19c, 19d), A method for operating the tool holder (10) according to claim 1, including the following:

15. The steps include bringing the tool (20) into contact with the tool holder (10), The steps include applying force with the tool (20) to the tool holder (10) so as to retract the retaining elements (17a, 17b, 17c, 17d) and position the tool (20) within the tool holder (10), Steps include the movement of the holding elements (17a, 17b, 17c, 17d) by the elastic return elements (19a, 19b, 19c, 19d), A method for operating the tool holder (10) according to claim 13 or 14, including the following:

16. The step of moving the operating member (14) in the first direction is a step of basic movement. A method for operating the tool holder (10) according to claim 13.

17. The first movement step of the operating member (14) in the first direction is a step of the first basic movement, and the second movement step of the operating member (14) in the second direction is a step of the second basic movement. A method for operating the tool holder (10) according to claim 14.

18. The movement of the operating member (14) in the first direction is a first basic movement, and the movement of the operating member (14) in the second direction is a second basic movement. The tool holder (10) according to claim 2.

19. The retaining elements (17a, 17b, 17c, 17d) are articulated by rotation around an axis (A17a, A17b, A17c, A17d), and the axis lies in one or more planes perpendicular to the axis (A11) of the tool holder (10). The tool holder (10) according to claim 4.

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