A positioning tool for batch positioning of lock head rotating shafts, a production device and a production method

Abstract

The application discloses a kind of positioning toolings of lock head rotating shaft batch, production device and production method, it is related to railway equipment production and manufacturing field, including: seat plate, it is U-shaped, one side wall of seat plate is equipped with multiple pairs of first recess, first recess and the end portion of lock head rotating shaft raw material are matched with clamping;Support plate is connected with the bottom wall of seat plate, and the top of support plate is equipped with multiple pairs of second recess, and the end portion of lock head rotating shaft raw material is matched with clamping in second recess;Flat key is detachably connected with the bottom wall of seat plate, and the top of flat key is attached with the processing plane of lock head rotating shaft semi-finished product;Multiple pressing plates are arranged above seat plate, when lock head rotating shaft raw material or lock head rotating shaft semi-finished product is placed on seat plate, pressing plate is attached with the upper surface of lock head rotating shaft raw material or lock head rotating shaft semi-finished product;The scheme can realize mass production of lock head rotating shaft, meet the production requirement of fast and efficient.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of railway equipment production and manufacturing, and more particularly relates to a positioning tool for batch production of lock head rotating shafts, a production device and a production method. BACKGROUND

[0002] NX70A type common flat cars are used on domestic standard railways and are mainly used for loading containers conforming to ISO668, 45ft, 48ft and 50ft national standard non-standard containers, and can also be used for loading steel, automobiles, boxed goods, large concrete bridges and military equipment. Among them, the lock head on the flat car adopts an improved F-TR lock form, and the lock head rotating shaft is an important component for fixing and overturning the lock head, so a large number of lock head rotating shafts need to be produced and stored. However, the existing equipment has limited production capacity and cannot meet the requirements of large quantities, rapid and efficient production. SUMMARY

[0003] The present application aims to solve the problems existing in the prior art and provides a positioning tool for batch production of lock head rotating shafts, a production device and a production method, which can realize mass production of lock head rotating shafts and meet the requirements of rapid and efficient production.

[0004] To achieve the above-mentioned purpose, the present application provides a positioning tool for batch production of lock head rotating shafts, comprising:

[0005] a seat plate in the shape of U, a plurality of pairs of first grooves are formed on one side wall of the seat plate, and the first grooves are matched with the end of the lock head rotating shaft raw material;

[0006] a support plate connected with the bottom wall of the seat plate, a plurality of pairs of second grooves are formed on the top of the support plate, and the second grooves are matched with the end of the lock head rotating shaft raw material;

[0007] a flat key detachably connected with the bottom wall of the seat plate, the top of the flat key is matched with the processing plane of the lock head rotating shaft semi-finished product;

[0008] a plurality of pressing plates arranged above the seat plate, when the lock head rotating shaft raw material or the lock head rotating shaft semi-finished product is placed on the seat plate, the pressing plates are matched with the upper surface of the lock head rotating shaft raw material or the lock head rotating shaft semi-finished product.

[0009] Optionally, a plurality of first mounting holes are formed on the other side wall of the seat plate, a plurality of second mounting holes are formed on the support plate, and the first mounting holes and the second mounting holes are connected by first bolts.

[0010] Optionally, the first grooves and the second grooves are correspondingly arranged, and the lock head rotating shaft raw material is placed along the width direction of the seat plate.

[0011] Optionally, the bottom wall of the seat plate is provided with a plurality of third mounting holes, and the flat key is provided with a plurality of fourth mounting holes, the third mounting holes and the fourth mounting holes being connected by a second bolt.

[0012] Optionally, the bottom wall of the seat plate is provided with a plurality of fifth mounting holes, and the clamping plate is connected to the fifth mounting holes by a third bolt.

[0013] Optionally, the clamping plate is centrally disposed between each pair of the first grooves.

[0014] The present invention also provides a production apparatus for batch production of lock head shafts, including the above-mentioned positioning fixture for batch production of lock head shafts, wherein at least two positioning fixtures are provided, the first positioning fixture is not provided with the flat key, and the second positioning fixture is provided with the flat key.

[0015] Optionally, the two positioning fixtures are mounted on the same machine tool bed.

[0016] Optionally, the two positioning fixtures are arranged along the length of the machine tool bed.

[0017] The present invention also provides a method for mass production of lock cylinder shafts, utilizing the aforementioned mass production apparatus for lock cylinder shafts, the method comprising:

[0018] The raw material of the lock cylinder shaft is placed on the first positioning fixture, and the semi-finished lock cylinder shaft is placed on the second positioning fixture;

[0019] The machine tool is started to process the raw material of the lock head shaft and the semi-finished product of the lock head shaft;

[0020] After processing, the finished lock head shaft is obtained from the second positioning fixture. The semi-finished lock head shaft removed from the first positioning fixture is transferred to the second positioning fixture. The new lock head shaft material is placed on the first positioning fixture, and the machine tool is started again for processing.

[0021] This invention provides a positioning fixture, production device, and production method for batch production of lock head shafts, the advantages of which are:

[0022] 1. This positioning fixture can ensure production quality. It is only necessary to fix the two positioning fixtures on the machine tool bed and then calibrate their positioning edges. During processing, it is only necessary to use this reference for positioning to ensure processing quality.

[0023] 2. This production device can improve production efficiency. Compared with the production time of a single piece, the efficiency of batch production is significantly improved. Using this production equipment can save a lot of time spent on frequent material changes and cutting.

[0024] 3. This production equipment can effectively guarantee process performance. The positioning fixture has a simple and reasonable structure, which facilitates manufacturing, assembly, adjustment, inspection and maintenance. Only two types of positioning fixtures are used. The different positioning fixtures have basically the same structure and most of them use standard fasteners. This allows workers to quickly meet the requirements of rapid workpiece loading and unloading and production without special training.

[0025] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0026] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0027] Figure 1 A schematic diagram of a positioning fixture for batch production of lock head shafts without a flat key, according to an embodiment of the present invention, is shown.

[0028] Figure 2 It shows Figure 1 A bottom view.

[0029] Figure 3 It shows Figure 1 A three-dimensional image.

[0030] Figure 4 It shows Figure 1 Exploded view.

[0031] Figure 5 A schematic diagram of a positioning fixture with a flat key for batch production of lock head shafts according to an embodiment of the present invention is shown.

[0032] Figure 6 It shows Figure 5 A bottom view.

[0033] Figure 7 It shows Figure 5 A three-dimensional image.

[0034] Figure 8 It shows Figure 5 Exploded view.

[0035] Figure 9An external schematic diagram of a finished lock cylinder shaft according to an embodiment of the present invention is shown.

[0036] Figure 10 An internal sectional view of a finished lock cylinder shaft according to an embodiment of the present invention is shown.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Seat plate; 2. First groove; 3. Support plate; 4. Second groove; 5. Flat key; 6. Pressure plate; 7. First bolt; 8. Second bolt; 9. Fifth mounting hole; 10. Third bolt; 11. Finished lock head shaft. Detailed Implementation

[0039] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0040] This invention provides a positioning fixture for batch production of lock head shafts, comprising:

[0041] The seat plate is U-shaped, and multiple pairs of first grooves are formed on one side wall of the seat plate. The first grooves are engaged with the end of the material of the lock head shaft.

[0042] The support plate is connected to the bottom wall of the base plate. The top of the support plate has multiple pairs of second grooves, which engage with the end of the lock head shaft material.

[0043] The flat key is detachably connected to the bottom wall of the base plate, and the top of the flat key is in contact with the machined surface of the semi-finished lock head shaft.

[0044] Multiple clamping plates are set above the base plate. When the raw material or semi-finished product of the lock cylinder shaft is placed on the base plate, the clamping plates are in contact with the upper surface of the raw material or semi-finished product of the lock cylinder shaft.

[0045] Specifically, the positioning fixture uses a base plate as the main support, and then a support plate is installed inside the base plate. Since the lock cylinder shaft material is a round bar structure, the lower half of both ends of the lock cylinder shaft material can be clamped and fixed through the first groove on the base plate and the second groove on the support plate. Then, a clamping plate is connected to the base plate, so that the clamping plate can press down on the top surface of the lock cylinder shaft, thereby achieving the positioning of the lock cylinder shaft material, which facilitates the processing of the upper surface plane, holes and chamfers of the lock cylinder shaft material. Then, the lock cylinder shaft with the upper surface processed is rotated up and down and placed on the positioning fixture with a flat key. The flat key fits with the processed upper surface to achieve stable support and positioning. Then, the clamping plate presses down on the unprocessed side of the lock cylinder shaft, which again achieves the positioning of the lock cylinder shaft material, which facilitates the processing of the lower surface plane and chamfers of the lock cylinder shaft material. The positioning fixture is equipped with multiple pairs of first and second grooves, with two grooves in each pair. This allows multiple lock head shafts to be positioned and fixed simultaneously using a single positioning fixture, eliminating the time spent on repeated positioning and fixing.

[0046] In one embodiment, two rows of flat keys are arranged along the width direction of the base plate. The two rows of flat keys are respectively arranged on a side wall and a support plate near the base plate. In this way, the machined surface on the lock cylinder shaft semi-finished product is fitted and supported with the flat keys, which can ensure the stable bottom positioning support of the lock cylinder shaft semi-finished product. In addition, the pressing plate includes a lower vertical plate and an upper horizontal plate. The lower vertical plate is arranged along the width direction of the base plate, so that the lower vertical plate can avoid the lock cylinder shaft. The upper horizontal plate is arranged along the length direction of the base plate. The two ends of the upper horizontal plate are fitted and pressed against the upper surface of the adjacent lock cylinder shaft. A positioning groove is provided at the end of the upper horizontal plate. When drilling holes in the lock cylinder shaft, the positioning groove can be used for positioning to ensure the accuracy of the hole position.

[0047] Optionally, a plurality of first mounting holes are provided on the other side wall of the seat plate, and a plurality of second mounting holes are provided on the support plate. The first mounting holes and the second mounting holes are connected by a first bolt.

[0048] Specifically, the base plate and the support plate are connected and fixed by the first bolt. The support plate is placed inside the U-shaped groove of the base plate. When the lock head shaft is fixed in the two grooves, the axial position of the lock head shaft is limited by the other side wall of the base plate. In this way, as long as the shape of the base plate is positioned, the positioning of the lock head shaft can be ensured accurately.

[0049] Optionally, the first groove and the second groove are provided correspondingly, and the material of the lock head shaft is placed along the width direction of the base plate.

[0050] Specifically, the first and second grooves engage and position the lower semicircular surface of the lock cylinder shaft, allowing the lock cylinder shafts to be arranged sequentially along the width of the base plate. This enables the positioning of more lock cylinder shafts using a base plate of the same area.

[0051] Optionally, the bottom wall of the seat plate is provided with multiple third mounting holes, and the flat key is provided with multiple fourth mounting holes. The third mounting holes and the fourth mounting holes are connected by a second bolt.

[0052] Optionally, the bottom wall of the seat plate is provided with multiple fifth mounting holes, and the clamping plate is connected to the fifth mounting holes by a third bolt.

[0053] Specifically, the flat key is fixed to the bottom wall of the base plate by multiple second bolts. The flat key can be set as a single piece, with multiple positioning surfaces on the upper surface of the flat key and a fourth mounting hole between adjacent positioning surfaces. This way, when the lock head shaft is in contact with the flat key, there will be no interference with the second bolts. Alternatively, the flat key can be set as multiple pieces, with two positioning surfaces on the upper surface of each flat key and a fourth mounting hole between the positioning surfaces. The gap between adjacent flat keys provides space for the clamping plate, allowing the clamping plate to be fully in contact with the side of the lock head shaft that needs to be machined, thereby achieving clamping and positioning of the upper surface of the lock head shaft.

[0054] Optionally, the clamping plate is centrally positioned between each pair of first grooves.

[0055] Specifically, during the installation of the two lock cylinder shafts on the positioning fixture, the base plate and the support plate are installed according to the principle of corresponding grooves. A spacer block is set on one side wall of the base plate between a pair of first grooves, and a spacer block is also set on the support plate between a pair of second grooves. The two lock cylinder shafts are placed in a pair of grooves respectively, and then the clamping plate is installed in the position corresponding to the spacer block. The middle part of the clamping block is connected by a third bolt, and the two ends of the clamping block press the upper surfaces of the two lock cylinder shafts together, thereby achieving the positioning and fixing of the two lock cylinder shafts. After one plane of the two lock cylinder shafts is machined, the two lock cylinder shafts are transferred to the positioning fixture with a flat key installed. The flat key is installed between one side wall of the base plate and the support plate. In this way, the flat key can fit against the machined plane on the lock cylinder shaft, and the clamping block can fit against and press against the upper surface of the lock cylinder shaft. This positions the lock cylinder shaft in the height direction. In addition, both ends of the lock cylinder shaft are still placed in the groove. In this way, the groove can limit the horizontal direction of the lock cylinder shaft, ensuring that the lock cylinder shaft can still maintain accurate positioning when it is machined on the relative plane.

[0056] The present invention also provides a production apparatus for batch production of lock head shafts, including the above-mentioned positioning fixture for batch production of lock head shafts. The positioning fixture is provided in at least two parts, the first positioning fixture is not provided with a flat key, and the second positioning fixture is provided with a flat key.

[0057] Optionally, the two positioning fixtures are mounted on the same machine tool bed.

[0058] Optionally, the two positioning fixtures are arranged along the length of the machine tool bed.

[0059] Specifically, in the batch production device for lock head shafts, two types of positioning fixtures, one with a flat key and the other without, are set on the same machine tool bed. The first positioning fixture is used to place the raw lock head shaft, and the second positioning fixture is used to place the semi-finished lock head shaft. Since the support plate, flat key, and clamping plate on the positioning fixture are all installed according to the first groove, third mounting hole, and fifth mounting hole on the base plate, as long as the base plate is positioned consistently on the machine tool bed, the machining datum of all lock head shafts can be determined. In this way, all lock head shafts can be processed in one machine tool cycle, saving the time of multiple tool lifting and lowering.

[0060] In one embodiment, apart from the addition of a flat key, the other components of the first and second positioning fixtures, such as the base plate, support plate, and clamping plate, are all general-purpose parts. The first and second bolts can be standard bolts, which reduces the manufacturing cost of the positioning fixtures and facilitates subsequent maintenance.

[0061] The present invention also provides a method for mass production of lock cylinder shafts, utilizing the aforementioned mass production apparatus for lock cylinder shafts, the method comprising:

[0062] Place the raw lock cylinder shaft on the first positioning fixture, and place the semi-finished lock cylinder shaft on the second positioning fixture;

[0063] Start the machine tool to process the raw material and semi-finished product of the lock head shaft;

[0064] After processing, the finished lock head shaft is obtained from the second positioning fixture. The semi-finished lock head shaft removed from the first positioning fixture is transferred to the second positioning fixture. The new lock head shaft material is placed on the first positioning fixture, and the machine tool is started again for processing.

[0065] Specifically, when processing the lock head shaft using this production device, the raw lock head shaft is fixed on the first positioning fixture, and the semi-finished lock head shaft is fixed on the second positioning fixture. Then, the machine tool is started, and in one operating cycle, a certain number of semi-finished and finished lock head shafts are produced. Next, the semi-finished lock head shafts are transferred to the second positioning fixture, and a certain number of raw lock head shafts are re-fixed on the first positioning fixture. The machine tool is then restarted for processing. In this way, during the entire processing, only the positions of the first and second positioning fixtures on the machine tool bed need to be determined at the very beginning. The positioning can be calibrated using the base plate structure of the positioning fixtures. Afterward, each loading and unloading of the lock head shafts does not require adjustment of the positioning fixtures' positions, ensuring processing quality and reducing the time spent on reference positioning.

[0066] Example

[0067] like Figures 1 to 10 As shown, the present invention provides a positioning fixture for batch production of lock head shafts, comprising:

[0068] The seat plate 1 is U-shaped, and multiple pairs of first grooves 2 are provided on one side wall of the seat plate 1. The first grooves 2 are engaged with the end of the raw material of the lock head shaft.

[0069] The support plate 3 is connected to the bottom wall of the base plate 1. The top of the support plate 3 has multiple pairs of second grooves 4, which are engaged with the end of the lock head shaft material.

[0070] The flat key 5 is detachably connected to the bottom wall of the base plate 1, and the top of the flat key 5 is in contact with the machined surface of the lock head shaft semi-finished product;

[0071] Multiple clamping plates 6 are set above the base plate 1. When the raw material or semi-finished product of the lock cylinder shaft is placed on the base plate 1, the clamping plates 6 are in contact with the upper surface of the raw material or semi-finished product of the lock cylinder shaft.

[0072] In this embodiment, a plurality of first mounting holes are provided on the other side wall of the base plate 1, and a plurality of second mounting holes are provided on the support plate 3. The first mounting holes and the second mounting holes are connected by a first bolt 7.

[0073] In this embodiment, the first groove 2 and the second groove 4 are provided correspondingly, and the raw material for the lock head shaft is placed along the width direction of the base plate 1.

[0074] In this embodiment, the bottom wall of the base plate 1 is provided with a plurality of third mounting holes, and the flat key 5 is provided with a plurality of fourth mounting holes. The third mounting holes and the fourth mounting holes are connected by a second bolt 8.

[0075] In this embodiment, a plurality of fifth mounting holes 9 are provided on the bottom wall of the base plate 1, and the clamping plate 6 is connected to the fifth mounting holes by the third bolt 10.

[0076] In this embodiment, the clamping plate 6 is centrally positioned between each pair of first grooves 2.

[0077] The present invention also provides a production apparatus for batch production of lock head shafts, including the above-mentioned positioning fixture for batch production of lock head shafts. The positioning fixture is provided in at least two parts, the first positioning fixture is not provided with a flat key 5, and the second positioning fixture is provided with a flat key 5.

[0078] In this embodiment, the two positioning fixtures are mounted on the same machine tool bed.

[0079] In this embodiment, two positioning fixtures are arranged along the length of the machine tool bed.

[0080] The present invention also provides a method for mass production of lock cylinder shafts, utilizing the aforementioned mass production apparatus for lock cylinder shafts, the method comprising:

[0081] Place the raw lock cylinder shaft on the first positioning fixture, and place the semi-finished lock cylinder shaft on the second positioning fixture;

[0082] Start the machine tool to process the raw material and semi-finished product of the lock head shaft;

[0083] After processing, the finished lock head shaft is obtained from the second positioning fixture. The semi-finished lock head shaft removed from the first positioning fixture is transferred to the second positioning fixture. The new lock head shaft material is placed on the first positioning fixture, and the machine tool is started again for processing.

[0084] In summary, the positioning fixture has six first grooves 2 on one side wall of the base plate 1, and six second grooves 4 correspondingly on the support plate 3. The support plate 3 is fixed to the other side wall of the base plate 1 by the first bolt 7, forming the main body of the first positioning fixture. On another base plate 1 with six first grooves 2, in addition to installing the support plate 3, two flat keys 5 are also installed. The two flat keys 5 are respectively placed close to one side wall of the base plate 1 and the support plate 3, and fixed with the second bolt 8, forming the second positioning fixture. The first and second positioning fixtures are fixed on the machine tool bed, and the positioning is uniformly achieved by the shape of the base plate 1 of the two positioning fixtures. In this way, all the lock head shafts on the two positioning fixtures can be processed in one run of the machine tool. The raw material of the lock head shaft and the lock head shaft semi-finished product are processed together. The parts are placed on the first and second positioning fixtures respectively. The lower half of the lock head shaft material is clamped and positioned by the first groove 2 and the second groove 4. Then, the top of the lock head shaft material is pressed and fixed by the clamping plate 6. The semi-finished lock head shaft fits and fixes the machined plane with the flat key 5. At the same time, the first groove 2 and the second groove 4 can position the arc surface of the lower half of the lock head shaft. The unmachined plane of the semi-finished lock head shaft is pressed and fixed by the clamping plate 6. Finally, the machine tool can be started to process the lock head shaft material and the semi-finished lock head shaft on the positioning fixtures at the same time. Each time the machine tool runs, six finished lock head shafts will be produced, saving the time of lifting and lowering the cutter, improving the processing efficiency. No repositioning and calibration is required each time the material is loaded, which can ensure the processing quality and accuracy.

[0085] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A positioning fixture for batch production of lock head shafts, characterized in that, include: The seat plate is U-shaped, and multiple pairs of first grooves are formed on one side wall of the seat plate. The first grooves are engaged with one end of the material of the lock head shaft. A support plate is connected to the bottom wall of the seat plate. The top of the support plate has multiple pairs of second grooves, which engage with the other end of the lock head shaft material. A flat key is detachably connected to the bottom wall of the base plate, and the top of the flat key is in contact with the machined surface of the lock head shaft semi-finished product; Multiple clamping plates are disposed above the base plate. When the raw material of the lock head shaft or the semi-finished product of the lock head shaft is placed on the base plate, the clamping plates are in contact with the upper surface of the raw material of the lock head shaft or the semi-finished product of the lock head shaft. The first groove and the second groove are provided correspondingly, and the raw material of the lock head shaft is placed along the width direction of the base plate.

2. The positioning fixture for batch production of lock head shafts according to claim 1, characterized in that, The other side wall of the seat plate has a plurality of first mounting holes, and the support plate has a plurality of second mounting holes. The first mounting holes and the second mounting holes are connected by a first bolt.

3. The positioning fixture for batch production of lock head shafts according to claim 1, characterized in that, The bottom wall of the base plate has multiple third mounting holes, and the flat key has multiple fourth mounting holes. The third mounting holes and the fourth mounting holes are connected by a second bolt.

4. The positioning fixture for batch production of lock head shafts according to claim 1, characterized in that, The bottom wall of the seat plate has multiple fifth mounting holes, and the clamping plate is connected to the fifth mounting holes by a third bolt.

5. The positioning fixture for batch production of lock head shafts according to claim 1, characterized in that, The clamping plate is centrally positioned between each pair of the first grooves.

6. A batch production device for lock head shafts, characterized in that, The positioning fixture for batch production of lock head shafts according to any one of claims 1-5 is provided in at least two, wherein the first positioning fixture is not provided with the flat key, and the second positioning fixture is provided with the flat key.

7. The batch production apparatus for lock head shafts according to claim 6, characterized in that, The two positioning fixtures are mounted on the same machine tool bed.

8. The batch production apparatus for lock head shafts according to claim 7, characterized in that, The two positioning fixtures are arranged along the length of the machine tool bed.

9. A method for mass production of lock cylinder shafts, utilizing the mass production apparatus for lock cylinder shafts according to any one of claims 6-8, characterized in that, The production method includes: The raw material of the lock cylinder shaft is placed on the first positioning fixture, and the semi-finished lock cylinder shaft is placed on the second positioning fixture; The machine tool is started to process the raw material of the lock head shaft and the semi-finished product of the lock head shaft; After processing, the finished lock head shaft is obtained from the second positioning fixture. The semi-finished lock head shaft removed from the first positioning fixture is transferred to the second positioning fixture. The new lock head shaft material is placed on the first positioning fixture, and the machine tool is started again for processing.

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