This standard specifies the basic requirements for the safety protection of sawing machines. This standard applies to horizontal band sawing machines, vertical band sawing machines, circular sawing machines, bow sawing machines and abrasive blade sawing machines for general use. GB 16454-1996 Technical requirements for safety protection of sawing machines GB16454-1996 Standard download decompression password: www.bzxz.net

GB 16454--1996
The purpose of formulating this standard is to reasonably determine the basic requirements for the installation and protection of sawing machines and their accessories, to ensure that the machines work safely and reliably during normal use and that human health is not harmed. From the date of entry into force of this standard, JB4140-85 "Safety Protection Requirements for Sawing Machines" shall be invalidated
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Metal Cutting Machine Tools. The drafting unit of this standard: Changsha Sawing Machine Research Institute. 38
1 Scope
National Standard of the People's Republic of China
Safeguarding Technical Requirements for Sawing Machines
Sawing machines
-Safeguarding specification
This standard specifies the basic requirements for safety protection of sawing machines. GB 16454-1996
This standard applies to horizontal band sawing machines, vertical band sawing machines, circular sawing machines, bow sawing machines and grinding wheel sawing machines for general purposes. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB15760—1995 General technical conditions for safety protection of metal cutting machine tools GB4674--84 Safety regulations for grinding machinery
ZBJ50004—88 Determination of sound pressure level of noise in metal cutting machine tools JB3866-85 Connection dimensions of the spindle end of circular sawing machine 3 Definitions
This standard adopts the following definitions.
3.1 Processing area
refers to the area through which the sawing machine tool cuts the workpiece. 3.1.1 The processing area of ​​a horizontal band sawing machine
refers to the area between the worktable and the saw band tooth edge within the exposed saw band length when the saw frame is at the maximum opening height, as shown in Figure 1.
3.1.2 The processing area of ​​a vertical band saw machine
refers to the maximum exposed area of ​​the saw band between the work table and the saw frame opening, as shown in Figure 2. 3.1.3 The processing area of ​​a horizontal circular saw machine
refers to the area passed by the exposed part of the circular saw blade during the horizontal stroke when sawing the workpiece with the largest cross-section, as shown in Figure 3. 3.1.4 The processing area of ​​a vertical circular saw machine
refers to the area passed by the exposed part of the circular saw blade during the vertical stroke when sawing the workpiece with the largest cross-section, as shown in Figure 4. 3.1.5 The processing area of ​​a swing circular saw machine
refers to the area passed by the exposed part of the circular saw blade during the swing stroke when sawing the workpiece with the largest cross-section, as shown in Figure 5. 3.1.6 The processing area of ​​horizontal and column horizontal bow saw machines refers to the area between the saw blade tooth edge and the work table when the saw bow is at the maximum opening height and the inner stop of the saw bow is within the front and rear limit positions of the maximum stroke, as shown in Figures 6 and 7.
3.1.7 Processing area of ​​grinding wheel sawing machine
Approved by the State Administration of Technical Supervision on July 5, 1996 and implemented on February 1, 1997
GB 16454--- 1996
refers to the area that the exposed part of the grinding wheel passes through during the feed stroke when sawing the workpiece with the largest cross section, as shown in Figure 8. 3.2 Processing area shield
refers to the shield covering the section of the saw belt that does not need to be exposed during sawing in the processing area, as shown in Figures 1 and 2. 3.3 Processing area baffle
refers to the baffle that allows the operator to enter the processing area to perform necessary operations, but restricts unintentional entry into the processing area, as shown in Figure 9. 3.4 Processing area fence
refers to the fence-like railing that warns and prevents the operator from entering the processing area, as shown in Figure 10. 3.5 Processing area tool
refers to a component, part or tool used during sawing to minimize the possibility of the operator unintentionally entering the processing area. 3.6 Shield
is a cover that prevents unintentional contact with dangerous parts outside the processing area of ​​the sawing machine. 3.7 Safety cover
refers to the cover that protects the circular saw blade or saw teeth from breaking during operation, as shown in Figure 4 (applicable only to circular saw machines). 3.8 Safety baffle
refers to the board that protects the circular saw blade or saw teeth from breaking during operation, as shown in Figure 11 (applicable only to circular saw machines). 3.9 Unconscious action
refers to the action that people perform unintentionally. For example, the operator or other personnel unconsciously bumps against the saw machine operating controls and unconsciously hits the protruding limit switch.
4 General requirements
4.1 The saw machine should be designed for safety to ensure that the saw machine is safe and reliable to use, and its safety protection should comply with the requirements of GB15760 and this standard. 4.2 It should be ensured that no harm is caused to personnel and machine tools when operating, adjusting, maintaining and overhauling machine tools in accordance with regulations. Necessary protective measures or safety protection devices should be taken for dangers that cannot be eliminated; dangers that are inconvenient to protect must be explained in the instruction manual, and warning signs should be set near dangerous parts when necessary. 4.3 When clamping the workpiece, ensure that the clamping pressure is maintained during the entire cutting cycle to prevent the workpiece clamping device from loosening. Processing area guard
Processing area guard
Processing area
Processing area
Processing area
Processing area
Processing area
GB 16454---1996
Processing area
Processing area
Processing area
Safety guard
Working area baffle
GB16454—1996
Processing area
Processing area fence
Safety baffle
4.4 The manufacturer shall provide one or more of the following protective devices for the safety protection of the sawing machine processing area: a) processing area guard;
b) processing area baffle;
c) processing area fence,
d) processing area machinery.
4.5 The operating force of the handwheel and handle of the sawing machine should be uniform within the travel range and generally meet the requirements of GB15760. Among them, the operating force of the stepless speed change handwheel of the horizontal band sawing machine, the saw band tensioning handwheel, the guide block handle, the column handwheel of the circular sawing machine, and the clamping handwheel of all sawing machines should meet the design requirements.
4.6 There should be no abnormal screaming and impact sound when the machine tool is running. Under the condition of idling, the noise sound pressure level of the sawing machine shall not exceed 83dB (A), and the measurement method of the sawing machine noise shall be carried out in accordance with the provisions of ZBJ50004. 5 Safety protection requirements for each sawing machine
5.1 Horizontal band sawing machinewwW.bzxz.Net
5.1.1 The band saw blade should be protected as effectively and reasonably as possible. The moving parts of the saw wheel and the band saw blade should be covered with a protective cover, and the processing area between the saw wheel guard and the guide device should be protected with an adjustable processing area guard. 5.1.2 When a horizontal band saw is in operation, the processing area shield should be able to be adjusted to keep the minimum safe distance from the workpiece, that is, as close to the workpiece as possible. 5.1.3 The protective device should have a solid structure to block the broken saw blade. 5.2 Vertical band saw
5.2.1 The band saw blade should be protected as effectively and reasonably as possible. The saw wheel and the moving part of the band saw blade should be covered with a protective cover, and the processing area between the saw wheel shield and the guide device should be protected with an adjustable processing area shield. 5.2.2 When a vertical band saw is in operation, the processing area shield should be able to be adjusted to keep the minimum safe distance from the workpiece, that is, as close to the workpiece as possible. 42
GB 16454—1996
5.2.3 The cover strip (or pad) used on the workbench of the vertical band saw should ensure that the gap on both sides of the cutting tool is not greater than 3mm. 5.2.4 When manual feeding is performed on vertical band saws, manual feeding tools should be provided to prevent hands or fingers from entering the processing area. 5.2.5 The protective device should have a solid structure to ensure that broken saw blades or saw blades are blocked. 5.2.6 When a foot controller is used, it should be covered to prevent unintentional operation. 5.3 Circular Saw Machines
5.3.1 All circular saw machines should be equipped with a fixed or movable safety cover. In addition, some circular saw machines also require a safety baffle. The design and manufacture of the safety cover should meet the following requirements: a) It should have sufficient strength to protect the operator from broken circular saw blades or saw teeth; b) The strength of the fasteners should be greater than the strength of the safety cover; c) It should be a limiting device to control the maximum diameter of the circular saw blade; d) It should provide appropriate openings and means of clearing chips without causing accidents; e) The exposed part of the circular saw blade should not exceed the range required to safely utilize the maximum sawing capacity of the saw machine. 5.3.2 The design of the safety cover or baffle should be adapted to the exposed part of the circular saw blade to protect the operator from being injured by flying sawdust, and its position should be as close to the front position as possible.
5.3.3 The design and manufacture of the spindle shall meet the following requirements: a) The spindle shall have a large enough diameter and strength to safely withstand the torque generated by "biting" and have a strong support capacity;
b) The axial clearance of the spindle shall not be too large and shall meet the design requirements; ) The spindle and the circular saw blade shall fit freely, generally using the H8 fit;
d) When the circular saw blade is tightened on the spindle with screws, the thread direction of the spindle shall be opposite to the rotation direction of the spindle. 5.3.4 The design and manufacture of the flange shall meet the following requirements: a) The flange can be made of steel, cast iron or other materials with equivalent or higher strength; b) Any type of two flanges that clamp the circular saw blade in the middle shall have equal diameters and the same clamping support surface, as shown in Figure 12
Incorrect
c) The design of the flange shall ensure that it has sufficient rigidity to maintain a certain radial contact support surface width when the saw blade is clamped. 5.3.5 The driving pin should have a suitable diameter, strength and number, and should generally comply with JB3866 to ensure that the driving torque of the spindle can be transmitted to the saw blade and can play a safety protection role. 5.3.6 The arrow on the safety cover should be used to permanently mark the rotation direction of the spindle. 5.4 Bow saw machine
GB 16454—1996
5.4.1 Because bow saw machines can hardly provide tangible protective devices to protect the processing area, but the reciprocating saw blade has a relatively low movement speed and a short reciprocating stroke. When cutting the workpiece, most of the saw blade is hidden in the workpiece or protected by the workpiece clamping mechanism. Therefore, there is generally no processing area shield, and a processing area baffle can be set as needed. 5.4.2 A splash guard should be provided to prevent coolant from splashing around the working area. 5.4.3 Obvious markings can be provided on the saw bow arm to indicate the correct installation method of the saw blade. 5.5 Grinding wheel sawing machine
5.5.1 Grinding wheel sawing machine is similar to circular sawing machine, the main difference is that the grinding wheel is installed in the place where the circular saw blade is installed, so it should meet the requirements of 5.3.1, 5.3.2, 5.3.4 and 5.3.6 of this standard. 5.5.2 The flange should be subjected to static balance test. 5.5.3 The protection of the grinding wheel should also meet the provisions of GB4674. 6 Safety requirements for use and maintenance
6.1 The manufacturer should send the user's manual of the sawing machine to the user at random for the user to correctly and safely install, adjust, operate, transport and repair. The safety regulations and standards to be followed must be specified in the manual. 6.2 In order to ensure the safe use and maintenance of the sawing machine, especially the personal safety of the operator, the user and the operator should try to meet the following requirements. 6.2.1 The sawing machine user has the responsibility and the manufacturer has the obligation to train the sawing machine operator so that he or she can safely complete various operations of the sawing machine.
6.2.2 The sawing machine user shall strictly follow the instructions to correctly install and use the sawing machine, and provide an appropriate working area around the sawing machine for safe operation and routine maintenance.
6.2.3 The operator shall operate the sawing machine according to the training received and the instructions of the sawing machine, and regularly maintain and service the sawing machine to maintain safe operating conditions.
6.2.4 The operator shall work under the condition that the sawing machine has safety protection devices and regularly check their integrity. If these devices are to be changed, moved or scrapped, the consent of the safety department of the unit shall be obtained. 6.2.5 The following points should be noted when operating a band saw: a) When a horizontal band saw is in operation, the processing area shield should be adjusted to maintain the minimum safety distance from the workpiece, that is, as close to the workpiece as possible; b) When a vertical band saw is in operation, the processing area shield should be adjusted to maintain the minimum safety distance from the workpiece, that is, as close to the workpiece as possible c) When the operator is working on a vertical band saw, the cover strip (or pad) on the workbench should be used to ensure that the gap on both sides of the cutting tool is not greater than 3mm;
d) When the operator is manually feeding on a vertical band saw, the manual feeding tool should be used as much as possible to prevent hands or fingers from entering the processing area.
6.2.6 When using various types of saws, care should be taken to ensure that long and heavy workpieces are securely supported when cutting in and out to avoid the cut workpiece falling and the machine tool overturning after cutting. 44
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