A locking device based on a broaching machine

Abstract

This application discloses a locking device based on a broaching machine, belonging to the field of fixing devices. It includes: a broaching machine body, on which a broach, a broach box, a fixing plate, and a positioning plate are disposed; the broach forms a cutting part, a shank, and a bayonet; the broach box forms a receiving chamber and a slotted hole for the shank to be inserted; the fixing plate forms a slotted fixing hole for engaging the bayonet; a limiting plate is placed at one end of the receiving chamber, and when the shank contacts the limiting plate, the bayonet is located at the other end of the receiving chamber; the beneficial effect is that the limiting plate can limit the broach when one end of the broach shank is inserted into the receiving chamber, and when the broach is inserted into the receiving chamber, the position of the bayonet in the receiving chamber is opposite to the end of the limiting plate. The worker does not need to determine the position of the bayonet; they only need to place the fixing block into the receiving chamber at the end opposite to the limiting plate, thereby improving production efficiency.

Description

Technical Field

[0001] This application relates to the field of fixing devices, and more specifically, to a locking device based on a broaching machine. Background Technology

[0002] In the field of machining, broaches are commonly used cutting tools, and the broach locking structure is crucial to ensuring the stable installation and reliable operation of broaches.

[0003] Patent CN204122838U discloses a crankshaft gear keyway machining mechanism. The pulling device includes a broach clamping block and a broach box fixedly connected to the broaching machine's pull shaft. The broach box has a slot for the broach to pass through. The broach clamping block is inserted into the broach box from top to bottom, so that the two vertical plates welded below the broach clamping block are precisely engaged in the slot of the broach shank. When the broaching machine is turned on, the pull shaft of the broaching machine pulls the broach box to move, and the two vertical plates press against the side walls of the broach box, thereby driving the broach to move.

[0004] When inserting the broach into the broach box, the worker needs to first determine the position of the broach shank's latch before placing the broach clamping block into the broach box, ensuring that the two vertical plates below the clamping block fit precisely between the latches on the broach shank. During production, after machining a gear, the worker needs to remove it from the gear jig and place the gear to be keyed onto the gear jig. This process requires repeated installation and removal of the broach, and each time the worker must determine the position of the broach shank's latch before placing the broach clamping block into the broach box, resulting in extremely low production efficiency. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a locking device based on a broaching machine, comprising: a broaching machine body, wherein a broach, a broach box, a fixing plate, and a positioning plate are disposed on the broaching machine body; the broach forms a cutting part, a shank, and a bayonet, wherein the shank and the cutting part are respectively located at both ends of the broach; the bayonet is located at one end near the shank; a receiving chamber is formed in the broach box, and a slotted hole for the shank to be inserted; the fixing plate forms a slotted fixing hole that engages with the bayonet; the positioning plate is placed at one end of the receiving chamber, and when the shank contacts the positioning plate, the bayonet is located at the other end of the receiving chamber; when the fixing plate is placed at the end of the receiving chamber away from the positioning plate, the slotted fixing hole engages with the bayonet.

[0007] Furthermore, the receiving chamber forms a guide groove for the insertion of the fixed plate; the opening direction of the guide groove is perpendicular to the horizontal plane; a driving member is provided on the broaching machine body; the output end of the driving member is connected to the fixed plate; the driving member is used to push the fixed plate to move along the extension direction of the guide groove.

[0008] Furthermore, the driving component includes: a fixing block; the fixing block forming a receiving groove; the receiving groove matching the shape of the fixing plate; and the centerline of the receiving groove coinciding with the centerline of the guide groove.

[0009] Furthermore, the fixing block forms a positioning slot; the extension direction of the positioning slot is parallel to the horizontal plane; the fixing plate forms a slot; when the fixing plate is placed in the receiving groove, the position of the slot matches the position of the positioning slot; a positioning rod is provided in the positioning slot and the slot; the shape of the positioning rod matches the shape of the receiving groove and the positioning slot.

[0010] Furthermore, one end of the positioning rod forms an abutment portion; when the positioning rod is inserted into the receiving groove and the positioning slot hole, the abutment portion contacts the outer wall surface of the fixing block.

[0011] Furthermore, a winding ring is provided on the positioning rod; the winding ring is connected to the puller box via a flexible rope.

[0012] The beneficial effects of this application are as follows: The positioning plate can limit the broach when one end of the broach shank is inserted into the receiving chamber, preventing the broach from being inserted too far into the receiving chamber. When the broach is inserted into the receiving chamber, the position of the latch in the receiving chamber is away from the end of the positioning plate. The worker does not need to judge the position of the latch, but only needs to put the fixing block into the receiving chamber at the end away from the positioning plate, thereby improving production efficiency. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0014] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0015] In the attached diagram: Figure 1 This is an overall schematic diagram based on an embodiment of this application; Figure 2 This is a structural diagram of a part of the embodiment, mainly showing the structure of the broach box, the fixing plate and the positioning plate; Figure 3 This is a partial exploded view of the embodiment, mainly showing the structure of the driving component, the fixing block and some surrounding parts; Figure 4 This is a partial exploded view of an embodiment, mainly showing the structure of the positioning rod and some surrounding parts; Figure 5 This is a structural schematic diagram as part of an embodiment, mainly showing the structure of the broach. Figure Labels

[0016] 1. Broaching machine body; 2. Broach; 21. Shank; 22. Cutting part; 23. Bayonet; 3. Broach box; 31. Receiving chamber; 32. Slot hole; 33. Guide groove; 4. Fixing plate; 41. Slot-shaped fixing hole; 42. Slot hole; 5. Positioning plate; 6. Drive component; 61. Fixing block; 611. Receiving groove; 612. Positioning slot hole; 7. Positioning rod; 71. Abutment part; 8. Flexible rope; 9. Winding ring. Detailed Implementation

[0017] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0018] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0019] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0020] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1-5 , A locking device based on a broaching machine includes: a broaching machine body 1, on which a broach 2, a broach box 3, a fixing plate 4, and a positioning plate 5 are disposed; the broach 2 forms a cutting part 22, a shank 21, and a shank 23, with the shank 21 and the cutting part 22 located at opposite ends of the broach 2; the shank 23 is located at the end near the shank 21; the cutting part 22 is the portion of the broach 2 used to cut keyways for gears, and the shank 21 refers to the end that inserts into the broach box 3, as shown in the attached drawings. Figure 5 The drawbar box 3 has an opening at the top forming a receiving chamber 31 and a slot 32 for inserting the handle 21. The fixing plate 4 has a slotted fixing hole 41 that engages with the slot 23. The positioning plate 5 is placed at one end of the receiving chamber 31, and when the handle 21 is in contact with the positioning plate 5, the slot 23 is located at the other end of the receiving chamber 31. When the fixing plate 4 is placed in the receiving chamber 31 at the end opposite to the positioning plate 5, the slotted fixing hole 41 engages with the slot 23. The worker does not need to determine the position of the slot 23; they only need to place the fixing block 61 into the receiving chamber 31 at the end opposite to the positioning plate 5, which significantly improves installation efficiency and reduces operation time. The positioning plate 5 can be made of metal or plastic; in this embodiment, plastic is preferred.

[0023] Specifically, the receiving chamber 31 forms a guide groove 33 for inserting the fixing plate 4; the opening direction of the guide groove 33 is perpendicular to the horizontal plane, and the guide groove 33 (perpendicular to the horizontal plane) ensures that the fixing plate 4 moves stably in the vertical direction. A drive component 6 is provided on the broaching machine body 1; the drive component 6 includes a fixed frame and a cylinder. In this embodiment, the cylinder can be replaced by an electric push rod or a hydraulic cylinder. The fixed frame is fixedly connected to the bottom of the broach box 3, and the cylinder is set on the fixed frame. In other embodiments, the fixed frame can also be set above the broach box 3, but an opening communicating with the receiving chamber 31 must be opened at the bottom of the broach box 3. The output end of the drive component 6 is connected to the fixing plate 4; the drive component 6 is used to push the fixing plate 4 to move along the extension direction of the guide groove 33. The output end of the drive component 6 pushes the fixing plate 4 to accurately engage with the slot 23, eliminating the need for workers to manually insert the fixing plate 4 into the receiving chamber 31, thus improving convenience. The output end of the drive unit 6 pushes the fixed plate 4 to move. When the strip-shaped fixing hole 41 on the fixed plate 4 is engaged in the bayonet 23 and the fixed plate 4 is located in the receiving chamber 31, the drive unit 6 will stop pushing. Before removing the broach 2, the drive unit 6 can drive the fixed plate 4 to move away from the bayonet 23 until the position of the strip-shaped fixing hole 41 is below the bayonet 23. At this time, the worker can remove the broach 2.

[0024] Specifically, the driving component 6 further includes: a fixing block 61; the fixing block 61 forms a receiving groove 611; one end of the fixing block 61 facing away from the strip-shaped fixing hole 41 is used to insert into the receiving groove 611. The shape of the receiving groove 611 matches that of the fixing plate 4; the center line of the receiving groove 611 coincides with the center line of the guide groove 33. After long-term use, the fixing block 61 will deform under stress at the point where the strip-shaped fixing hole 41 contacts the bayonet 23. Therefore, in this embodiment, a fixing block 61 is provided, and the receiving groove 611 is used to place the fixing block 61 at the output end of the driving component 6 to ensure that the fixing block 61 can be replaced.

[0025] Specifically, the fixing block 61 forms a positioning slot 612; the extension direction of the positioning slot 612 is parallel to the horizontal plane; the fixing plate 4 forms a slot 42; when the fixing plate 4 is placed in the receiving groove 611, the position of the slot 42 matches that of the positioning slot 612; a positioning rod 7 is provided in the positioning slot 612 and the slot 42; the shape of the positioning rod 7 matches the shape of the receiving groove 611 and the positioning slot 612. When the driving member 6 drives the fixing plate 4 closer to or away from the slot 23, the outer wall surface of the fixing plate 4 will contact the inner wall surface of the guide groove 33. If dust during the processing enters the guide groove 33, the fixing plate 4 will be stuck in the guide groove 33 and then detach from the receiving groove 611. Therefore, a positioning rod 7 is provided in this embodiment. The positioning slot 612 and the slot 42 are connected by the positioning rod 7 to achieve quick fixing of the fixing block 61 and the fixing plate 4, so as to prevent the fixing plate 4 from being stuck in the guide groove 33.

[0026] Specifically, one end of the positioning rod 7 forms an abutment portion 71; the abutment portion 71 has a plate-like structure. When the positioning rod 7 is inserted into the receiving groove 611 and the positioning slot hole 612, the abutment portion 71 contacts the outer wall surface of the fixing block 61. The contact between the abutment portion 71 and the outer wall surface of the fixing block 61 provides mechanical restraint, prevents the positioning rod 7 from loosening, and enhances structural stability.

[0027] Specifically, a winding ring 9 is installed on the positioning rod 7; the winding ring 9 is connected to the cutter box 3 via a flexible rope 8. The connection design between the winding ring 9 and the flexible rope 8 prevents the positioning rod 7 from being lost, facilitates maintenance and management, and extends the service life of the equipment.

[0028] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A drawbench based locking device, characterized in that, include: A broaching machine body, wherein a broach, a broach box, a fixing plate and a positioning plate are provided on the broaching machine body; The broach has a cutting section, a shank, and a chuck, with the shank and the cutting section located at opposite ends of the broach; the chuck is located at the end closest to the shank. The drawbar box has a receiving chamber and a slot for inserting the handle; the fixing plate has a slotted fixing hole that engages with the slot; the positioning plate is placed at one end of the receiving chamber, and when the handle is in contact with the positioning plate, the slot is located at the other end of the receiving chamber; when the fixing plate is placed at the end of the receiving chamber away from the positioning plate, the slotted fixing hole engages with the slot.

2. The locking device based on a broaching machine according to claim 1, characterized in that: The receiving chamber forms a guide groove for the insertion of the fixing plate; the opening direction of the guide groove is perpendicular to the horizontal plane; The broaching machine body is equipped with a drive component; The output end of the driving component is connected to the fixed plate; the driving component is used to push the fixed plate to move along the extension direction of the guide groove.

3. A locking device based on a broaching machine according to claim 2, characterized in that: The driving component includes: a fixing block; The fixing block forms a receiving groove; the shape of the receiving groove matches that of the fixing plate; the center line of the receiving groove coincides with the center line of the guide groove.

4. A locking device based on a broaching machine according to claim 3, characterized in that: The fixing block forms a positioning slot; the extension direction of the positioning slot is parallel to the horizontal plane; The fixing plate forms a slot hole; when the fixing plate is placed in the receiving groove, the slot hole matches the position of the positioning slot hole. A positioning rod is provided in the positioning slot and the card slot; The shape of the positioning rod matches the shape of the receiving groove and the positioning slot hole.

5. A locking device based on a broaching machine according to claim 4, characterized in that: One end of the positioning rod forms an abutment portion; When the positioning rod is inserted into the receiving groove and the positioning slot hole, the abutting part contacts the outer wall surface of the fixing block.

6. A locking device based on a broaching machine according to claim 5, characterized in that: The positioning rod is provided with a winding ring; the winding ring is connected to the puller box by a flexible rope.

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