Positioning device
The positioning device employs a clamp module with fluid-actuated clamp blocks and a piston mechanism to address slow and unstable screw-based locking, achieving quick and accurate positioning and detachment.
Patent Information
- Application Number
- JP2025001472U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2035-05-12
AI Technical Summary
Existing positioning devices suffer from slow adjustment speed and unstable clamping due to screw-based locking mechanisms, leading to reduced efficiency and accuracy during frequent article exchanges.
A positioning device with a clamp module comprising clamp blocks, a push block, and reset modules, utilizing fluid pressure to quickly and stably engage and disengage with positioning holes through elastic units and a piston mechanism.
Enables rapid and stable positioning and detachment of members, minimizing shaking and improving accuracy by using a simple structure that reduces wear and maintains consistent clamping force.
Smart Images
Figure 0003251976000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a positioning device, and in particular, to a technical improvement of a positioning device capable of positioning a member to be positioned.
Background Art
[0002] Positioning devices can be used in fields such as precision machining, CNC machining, mold manufacturing, and five-axis machining. Articles (such as positioning jigs, vises, jigs, members to be machined, tools, molds, etc.) can be positioned thereon, and accurate positioning can be maintained even when the articles are transferred between different positioning devices or repeatedly attached to the same positioning device.
[0003] In the prior art positioning device, the first and second locking members are screwed together with a screw, and by rotating the screw, the first and second locking members are adjusted to lock the first insertion post and the second insertion post of the article, and by rotating the screw in the reverse direction, the locking of the first and second locking members to the first insertion post and the second insertion post of the article is released.
[0004] However, in the prior art, since the method of screwing and adjusting the first and second locking members with the screw to lock and release the first insertion post and the second insertion post is adopted, the adjustment speed is slow. When the articles are frequently exchanged, it causes a waste of time and reduces the working efficiency. In addition, the wear of the screw affects the locking accuracy, and loosening of the screw occurs after long-term use, resulting in unstable clamping force.
[0005] Therefore, in order to solve the above problems, it is necessary to provide a novel and progressive positioning device.
Summary of the Invention
Problems to be Solved by the Invention
[0006] The main object of the present invention is to provide a positioning device capable of stably and quickly positioning and detaching a member to be positioned.
Means for Solving the Problems
[0007] To achieve the above object, the present invention provides a positioning device, including a plurality of positioning holes, a first receiving groove, a second receiving groove, and a first flow path. The first flow path is connected to the second receiving groove, and the first receiving groove is provided with a plurality of clamp blocks, a push block, and at least one reset module. The push block laterally presses against the plurality of clamp blocks to engage them with the plurality of positioning holes. Each of the clamp blocks is provided with a sliding contact inclined surface, and a plurality of pressing contact inclined surfaces are provided on the circumferential side of the push block. Each of the pressing contact inclined surfaces is slidably contacted with the sliding contact inclined surface. Each of the reset modules includes a connecting member and at least one elastic unit. The connecting member penetrates through the plurality of clamp blocks, and the at least one elastic unit includes a clamping module that elastically contacts one of the clamp blocks and the connecting member, and a piston that is movably provided in the second receiving groove, annularly contacts the inner circumferential wall of the second receiving groove, and moves the push block to move the plurality of clamp blocks.
Brief Description of the Drawings
[0008]
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Embodiments for Carrying Out the Invention
[0009] Hereinafter, possible embodiments of the present invention will be described only by way of examples, which do not limit the scope to be protected by the present invention, nor do they limit the number "one" or "at least one" attached to the nouns described in this specification. If necessary, it may be "a plurality", and this change in number is also within the scope to be protected, which will be described first.
[0010] Referring to FIGS. 1 to 15, which show an embodiment of the present invention, the positioning device 1 of the present invention includes a base 10, a clamp module 20, and a piston 40.
[0011] The base 10 includes a plurality of positioning holes 11, a first receiving groove 12, a second receiving groove 13, and a first flow path 14, and the first flow path 14 communicates with the second receiving groove 13. The clamping module 20 is provided in the first receiving groove 12, and the clamping module 20 includes a plurality of clamping blocks 21, a push block 22, and at least one reset module 30. The push block 22 can laterally abut against the plurality of clamping blocks 21 and engage with the plurality of positioning holes 11. Each of the clamping blocks 21 is provided with a sliding abutting slope 211, and a plurality of abutting slopes 221 are provided on the circumferential side of the push block 22. Each of the abutting slopes 221 is slidably abutted against the sliding abutting slope 211 relatively.
[0012] Each reset module 30 includes a connecting member 31 and at least one elastic unit 32. The connecting member 31 penetrates through the plurality of clamping blocks 21, and the elastic unit 32 is elastically abutted against one of the clamping blocks 21 and the connecting member 31. In this embodiment, the elastic unit 32 is elastically abutted against the enlarged diameter portion of the connecting member 31. The piston 40 is movably provided in the second receiving groove 13. The piston 40 is annularly abutted against the inner circumferential wall of the second receiving groove 13. The piston 40 can move the push block 22 to move the plurality of clamping blocks 21.
[0013] Furthermore, each positioning hole 11 extends along the axial direction L1, and the axial direction L1 is transverse to the sliding direction S of each clamping block 21. The plurality of positioning holes 11 are used to removably accommodate a plurality of positioning structures 3 (such as insertion posts) of a positioning target member 2 (such as a positioning jig, a vise, a jig, a machining target member, a tool, a mold, etc.). The plurality of clamping blocks 21 are used to selectively engage with or disengage from the concave grooves 4 of each positioning structure 3. The axial direction L1 is perpendicular to the sliding direction S, whereby the positioning target member 2 can be quickly positioned and de-positioned.
[0014] During use, fluid (e.g., gas or liquid) is selectively introduced into the first flow path 14, pushing up the piston 40 to move the push block 22 and move it upward along the axial direction L1 (e.g., as shown in FIG. 8), pressing the push block 22 laterally against the plurality of clamp blocks 21 to move them away from each other along the extending direction of the connecting member 31, engaging with the plurality of positioning holes 11 and the concave grooves 4 of each positioning structure 3 (e.g., as shown in FIG. 13), and elastically compressing each elastic unit 32 to achieve a positioning effect. Conversely, when the push block 22 moves downward to reset in the piston 40 (e.g., as shown in FIG. 7), each elastic unit 32 elastically presses the plurality of clamp blocks 21 to move them closer to each other along the extending direction of the connecting member 31 to reset (e.g., as shown in FIG. 9), disengaging from the plurality of positioning holes 11 and the concave grooves 4 of each positioning structure 3 to release the positioning.
[0015] Thereby, with a simple structure, the plurality of clamp blocks 21 are moved to stably and smoothly move away from and close to each other to reset, making it less prone to shaking and quickly positioning and disengaging the positioning target member 2.
[0016] Specifically, each connecting member 31 includes two screw members 311 (which may be bolts or headed screws) and nuts 312. Each screw member 311 penetrates the clamp block 21, and the nut 312 screws and locks the threaded portions of the two screw members 311. Each clamp block 21 can move relative to the screw member 311. Preferably, each reset module 30 includes a plurality of elastic units 32. Each elastic unit 32 is elastically abutted between the screw member 311 and the clamp block 21, guiding each clamp block 21 to stably move relatively through each screw member 311.
[0017] More specifically, the nut 312 has a first female thread portion and a second female thread portion with opposite spiral directions. One of the screw members 311 is screwed onto the first female thread portion, and the other screw member 311 is screwed onto the second female thread portion. When the nut 312 is screwed and adjusted in the forward and reverse directions, the two screw members 311 are relatively moved closer or farther apart, and further, the relative positions between the plurality of clamp blocks 21 can be adjusted, thereby improving the positioning accuracy.
[0018] Preferably, at least one locking groove 222 is provided on the push block 22, and the nut 312 is locked in the at least one locking groove 222. The nut 312 can be locked to two opposite side walls of the locking groove 222 in the sliding direction S of each clamp block 21. In this embodiment, the clamp module 20 includes two reset modules 30, and the two locking grooves 222 are provided on both opposite sides of the push block 22, and each nut 312 is provided in one of the locking grooves 222. Each screw member 311 can penetrate the clamp block 21 along the sliding direction S of each clamp block 21. In this way, each clamp block 21 is restricted by the locking groove 222 and does not move relative to the push block 22 along the sliding direction S, thereby fixing the relative positions of the two screw members 311.
[0019] Preferably, the clamp module 20 further includes a plurality of elastic pressing members 23, and the plurality of elastic pressing members 23 are elastically abutted between the plurality of clamp blocks 21 and the base 10 and are parallel to each elastic unit 32, thereby improving the elastic thrust for elastically pressing and resetting each clamp block 21 (for example, FIGS. 12 and 13).
[0020] At least one (a plurality of) balls 24 are provided on one end face of each clamp block 21, and the at least one (a plurality of) balls 24 are in contact with one inner wall of the base 10, so that each clamp block 21 can slide stably and smoothly relative to the base 10 and is not prone to deflection.
[0021] The positioning device 1 further includes a plurality of lifting mechanisms 50. Each positioning hole 11 defines a central axis A, and the central axis A extends along the axial direction L1. Each positioning hole 11 is open in the axial direction L1. The base 10 further includes a second flow path 15 and a plurality of accommodation holes 16. The second flow path 15 communicates the plurality of accommodation holes 16 with the second accommodation groove 13. The plurality of lifting mechanisms 50 are provided in the plurality of accommodation holes 16. Each lifting mechanism 50 can move along the axial direction L1 with respect to the accommodation hole 16 until it protrudes from one outer end surface of the base 10. Specifically, fluid can be selectively introduced into the first flow path 14 and the second flow path 15 via a driving unit such as a pneumatic cylinder.
[0022] Specifically, each lifting mechanism 50 includes a lifting member 51, an elastic abutting member 52, and a sealing ring 53. The lifting member 51 can move between a first position and a second position with respect to the accommodation hole 16. When the lifting member 51 is in the first position (e.g., FIG. 14), the lifting member 51 is located within the accommodation hole 16. When the lifting member 51 is in the second position (e.g., FIG. 15), the lifting member 51 protrudes from the outer end surface of the base 10. The elastic abutting member 52 is elastically abutted against the lifting member 51 and the inner wall of the accommodation hole 16. The sealing ring 53 is provided on the lifting member 51 and is annularly abutted against the inner wall of the accommodation hole 16. A stopper ring 54 is further provided in each accommodation hole 16. The stopper ring 54 can lock the lifting member 51 and move in the direction of the second accommodation groove 13. A through hole 541 is provided in the stopper ring 54, and the through hole 541 communicates the second accommodation groove 13 with the accommodation hole 16. In this embodiment, the stopper ring 54 is screwed into the accommodation hole 16 to facilitate detachment and replacement.
[0023] The piston 40 blocks the first flow path 14 and the second flow path 15 on both opposite sides. Each of the accommodating holes 16 is opened along the axial direction L1, similar to each of the positioning holes 11. In this way, fluid (gas or liquid) can be introduced into the second flow path 15, and at the same time, each of the pushing members 51 can be pushed up (moved from the first position to the second position), and the piston 40 can be pushed down. That is, each of the clamp blocks 21 simultaneously releases the position restriction on the plurality of positioning structures 3 (the operation is from Figure 13 to Figure 12), and pushes up the plurality of positioning structures 3 of the positioning target member 2 away from each of the positioning holes 11, and quickly and smoothly detaches each of the positioning structures 3. Also, when the fluid is released from pushing up each of the pushing members 51, each of the pushing members 51 can be elastically pushed through the elastic abutting member 52 and reset to the first position.
Explanation of Reference Numerals
[0024] 1 Positioning device 2 Positioning target member 3 Positioning structure 4 Groove 10 Base 11 Positioning hole 12 First accommodating groove 13 Second accommodating groove 14 First flow path 15 Second flow path 16 Accommodating hole 20 Clamp module 21 Clamp block 211 Sliding abutting inclined surface 22 Push block 221 Pushing abutting inclined surface 222 Locking groove 23 Elastic pushing member 24 Ball 30 Reset module 31 Connecting member 311 Screw member 312 Nut 32 Elastic unit 40 Piston 50 Pushing mechanism 51 Pushing-up member 52 Elastic abutting member 53 Seal ring 54 Stopping ring 541 Through hole S Sliding direction A Central axis L1 Axial direction
Claims
1. A positioning device, including a plurality of positioning holes, a first receiving groove, a second receiving groove, and a first flow path, wherein the first flow path communicates with the second receiving groove, and a base; provided in the first receiving groove, including a plurality of clamp blocks, a push block, and at least one reset module, wherein the push block laterally presses against the plurality of clamp blocks to engage them in the plurality of positioning holes, each of the clamp blocks is provided with a sliding contact inclined surface, a plurality of pressing contact inclined surfaces are provided on the circumferential side of the push block, each of the pressing contact inclined surfaces is slidably contacted relative to the sliding contact inclined surface, each of the reset modules includes a connecting member and at least one elastic unit, the connecting member penetrates the plurality of clamp blocks, and the at least one elastic unit includes a clamp module that elastically contacts one of the clamp blocks and the connecting member; a piston movably provided in the second receiving groove, annularly contacting the inner circumferential wall of the second receiving groove, and moving the push block to move the plurality of clamp blocks. A positioning device.
2. Each of the connecting members includes two screw members and a nut, each of the screw members penetrates the clamp block, the nut screws and locks the two screw members, and each of the clamp blocks moves relative to the screw member. The positioning device according to claim 1.
3. Each of the reset modules includes a plurality of the elastic units, and each of the elastic units elastically contacts between the screw member and the clamp block. The positioning device according to claim 2.
4. At least one locking groove is provided in the push block, the nut is locked in the at least one locking groove, and is locked to two opposing side walls of the locking groove in the sliding direction of each of the clamp blocks. The positioning device according to claim 3.
5. The clamp module further includes a plurality of elastic pressing members, the plurality of elastic pressing members elastically contact between the plurality of clamp blocks and the base, and are parallel to each of the elastic units. The positioning device according to claim 1.
6. At least one ball is provided on one end face of each of the clamping blocks, and the at least one ball contacts one inner wall of the base. The positioning device according to claim 1.
7. Each of the positioning holes extends along an axial direction, the axial direction is transverse to the sliding direction of each of the clamping blocks, the plurality of positioning holes are used to removably accommodate a plurality of positioning structures of a member to be positioned therein, and the plurality of clamping blocks are used to selectively engage or disengage with the concave grooves of each of the positioning structures. The positioning device according to claim 1.
8. Further comprising a plurality of pushing mechanisms, each of the positioning holes defines a central axis, the central axis extends along an axial direction, the base further comprises a second flow path and a plurality of accommodation holes, the second flow path communicates the plurality of accommodation holes with the second accommodation groove, the plurality of pushing mechanisms are provided in the plurality of accommodation holes, and each of the pushing mechanisms moves along the axial direction with respect to the accommodation hole until it protrudes from the outer end face of the base. The positioning device according to any one of claims 1 to 6.
9. The second flow path communicates with the second accommodation groove, and the piston blocks the first flow path and the second flow path on opposite sides. The positioning device according to claim 8.
10. The clamping module includes two of the reset modules, the two locking grooves are provided on opposite sides of the push block, and each of the nuts is provided in one of the locking grooves. Each of the screw members penetrates the clamping block along the sliding direction of each of the clamping blocks. The clamping module further includes a plurality of elastic pressing members, the plurality of elastic pressing members are elastically abutted between the plurality of clamping blocks and the base, and are parallel to each of the elastic units. At least one ball is provided on one end face of each of the clamping blocks, and the at least one ball contacts one inner wall of the base. Each of the positioning holes extends along an axial direction, the axial direction is transverse to the sliding direction of each of the clamping blocks, the plurality of positioning holes are used to removably accommodate a plurality of positioning structures of a member to be positioned therein, and the plurality of clamping blocks are used to selectively engage or disengage with the concave grooves of each of the positioning structures. The positioning device further includes a plurality of pushing-up mechanisms. Each of the positioning holes defines a central axis, and the central axis extends along the axial direction. Each of the positioning holes is open along the axial direction. The base further includes a second flow path and a plurality of accommodating holes. The second flow path communicates the plurality of accommodating holes with the second accommodating groove. The plurality of pushing-up mechanisms are provided in the plurality of accommodating holes. Each of the pushing-up mechanisms moves along the axial direction with respect to the accommodating hole until it protrudes from the outer end face of the base. The second flow path communicates with the second accommodating groove. The piston blocks the first flow path and the second flow path on both opposite sides. Each of the pushing-up mechanisms includes a pushing-up member, an elastic abutting member, and a sealing ring. The pushing-up member moves between a first position and a second position with respect to the accommodating hole. When the pushing-up member is located at the first position, the pushing-up member is located within the accommodating hole. When the pushing-up member is located at the second position, the pushing-up member protrudes from the outer end face of the base. The elastic abutting member is elastically abutted against the pushing-up member and the inner wall of the accommodating hole. The sealing ring is provided on the pushing-up member and is annularly abutted against the inner wall of the accommodating hole. A stopper ring is further provided in each of the accommodating holes. The stopper ring locks the pushing-up member to move in the direction of the second accommodating groove. A through hole is provided in the stopper ring, and the through hole communicates the second accommodating groove with the accommodating hole. The positioning device according to claim 4.