GB 13960.2-2008Safety of transportable motor operated electric tools - Part 2: Particular requirements for circular saws (English PDF)

Foreword

All technical content in this section is mandatory.

This section GB 13960 "Safety of transportable power tool" in the second part of the series standard requirements for circular saws. This series marked Quasi is composed as follows.

GB 13960.1 "Safety of transportable electric tools - Part 1. General requirements" GB 13960.2 "safe second portion movable electric tools. requirements for circular saws" GB 13960.3 "Safety of transportable electric tools Part II. Particular requirements for radial arm saws" GB 13960.4 "safe second portion movable electric tools. planer and thickness planer special requirements" GB 13960.5 "safe second portion movable electric tools. Particular requirements for bench grinders" GB 13960.6 "safe second portion movable electric tools. requirements for band saws" GB 13960.7 "safe second portion movable electric tools. Particular requirements for diamond drills with water supply." GB 13960.8 "Safety of transportable electric tools Part II. Particular requirements for diamond saws with water supply." GB 13960.9 "Safety of transportable electric tools Part 2. Particular requirements for cutting machine" GB 13960.10 "Safety of transportable electric tools Part II. single spindle vertical milling special requirements" GB 13960.11 "Portable electric tools Part Security. profile cutting machine of special requirements" GB 13960.12 "Safety of transportable electric tools Part II. Particular requirements for high pressure cleaners" GB 13960.13 "safe second portion movable electric tools. oblique cutting table saws requirements" this Part replaces GB 13960.2-1996, and used with GB 13960.1-2008.

This section GB 13960.2-1996 major technical modifications include.

Reg structure --- the first part of this section due to the revision caused changes;

--- Replace the original 7.13 8.12.2b), and refer to GB 13960.9-2004 made part of the increase;

--- Increased 19.1.101.4;

--- According to IEC 61029-2-1 Amendment No. 1 (2001), the inspection clause 21.18 is amended as.

By (100 ± 1) mm diameter sphere is applied onto the switch test. Sphere tool should not be started.

This section states that "applicable", showing the corresponding provisions applicable in 13960.1-2008 GB ; this section states that "change", then shall be subject to the provisions of this section; this section states that "modify", expressed in GB 13960.1 corresponding provisions of this section shall be content the modification is subject to, and the contents of other provisions still apply; this states "addition", expressed in addition to compliance with GB 13960.1-Outside the corresponding provisions of the 2008's, this section shall comply with the increased provision.

This part is proposed by the China Electrical Equipment Industrial Association.

This part of the National Power Tools Standardization Technical Committee (SAC/TC68) and focal point responsible for the interpretation.

This section is responsible for drafting unit. Shanghai Electric Tool Research Institute.

1 Scope

In addition to the following provisions, GB 13960.1-2008 this chapter apply.

modify.

Change the first paragraph.

This section applies to a diameter of not more than 260mm blade sawing wood and similar materials for portable circular saw (as defined in 3.101).

2 Normative references

GB 13960.1-2008 this chapter apply.

3 Terms and Definitions

In addition to the following provisions, GB 13960.1-2008 this chapter apply.

3.101

With extended open tooth saw blade rotating table slot to sawing wood and similar materials, tools, the table supporting the workpiece, and the workpiece Positioning the workpiece by hand or push rod toward the saw blade feed motor and blade gearing placed countertops or less.

4 General requirements

GB 13960.1-2008 this chapter apply.

5 General test requirements

GB 13960.1-2008 this chapter apply.

6 Void

Category 7

GB 13960.1-2008 this chapter apply.

8 Marking and instructions

In addition to the following provisions, GB 13960.1-2008 this chapter apply.

8.1 Addition.

Circular saws shall be marked.

--- Nominal blade diameter, mm;

--- Rated load speed, r/min;

--- Maximum sawing depth, mm;

--- Mark the direction of rotation of the blade.

Rotating blade identification shall be marked on the shroud can be adjusted.

To be changed to a different load speed circular saw should shift method and thus obtained detailed load speed marked in the past regulating device Next, a schematic can be achieved by other methods.

8.6 Addition.

In the vicinity of the output shaft rotation direction of the blade shall be visible when replacing the blade protruding or concave arrow, or other clear and durable way Marked on the fixing member.

8.12.2 b) increase.

--- Do not use damaged or deformed saw blades;

--- If the guard is not in its proper position, shall not use a circular saw;

--- Replace worn-out table inlay;

--- Can be sawn material specifications;

--- Not use a circular saw sawing material is not recommended;

--- When sawing, the saw dust to be loaded on the device;

--- Can only use blades recommended by the manufacturer;

--- Sawing material selection is based on the blade;

--- To use the push stick to push the workpiece through the saw blade;

--- Use and correctly adjust the riving knife;

--- Use and correct adjustment on the saw blade guard;

Be careful when --- grooved.

Note. The available diagrams to represent the mode of operation.

9 Protected from contact with live parts

GB 13960.1-2008 this chapter apply.

10 Start

GB 13960.1-2008 this chapter apply.

11 Power input and current

GB 13960.1-2008 this chapter apply.

Fever 12

GB 13960.1-2008 this chapter apply.

13 Void

GB 13960.1-2008 this chapter apply.

14 Moisture resistance

GB 13960.1-2008 this chapter apply.

15 Void

GB 13960.1-2008 this chapter apply.

16 Overload protection of transformers and associated circuits

GB 13960.1-2008 this chapter apply.

17 Durability

GB 13960.1-2008 this chapter apply.

18 Abnormal operation

In addition to the following provisions, GB 13960.1-2008 this chapter apply.

18.1 Addition.

101 Note. that the circular saw is one other moving parts easy to get stuck tools.

19 Mechanical hazards

In addition to the following provisions, GB 13960.1-2008 this chapter apply.

19.1 Addition.

Circular saws shall be equipped with an appropriate protection system, the system shall be by means of a tool to remove.

Protection systems must comply with the requirements of 19.1.107 19.1.101 ~.

101 Note. Allow other measures to achieve the desired degree of mechanical safety, as long as these measures and provisions equivalent and equally reliable protection system.

Protection 19.1.101 Saw table side 19.1.101.1 circular saw should be above the saw table has a protective cover, covering the saw blade crown and frontal, which can be an adjustable guard or Automatic guard or fixed shield, or a combination of these types of protective cover.

19.1.101.2 any sawing blade depth and tilt angle, the guard should at least be able to cover both sides of the blade root, the blade in front it should at least cover the surface between the riving knife and table.

Application of aluminum shield, wood, plastic and other materials made of similar, in order to reduce it in the event of damage to the blade met blade.

Guards shall be designed and fixed to be as to not collide with the blade occurs.

19.1.101.3 when the guard made non-transparent material, it should be on a plane with the blade in a straight line direction refers to a sawing line Display.

19.1.101.4 shield if material is not directly supported by the knife points, as long as the thickness of the support is not greater than the thickness of the riving knife, which can support with the riving knife row in a straight line.

19.1.101.5 adjustable hood should be adjusted without tools, but should be able to be locked in any position necessary in order to achieve the required Protective effects.

19.1.106 automatic guard shall.

a) When sawing the workpiece is moved to come into contact with the blade guard opens automatically.

b) automatically maintain contact with the upper surface of the workpiece being sawn, and can cover both sides of the blade, at least to the tooth root or less, and at least to cover the surface between the riving knife and the workpiece.

c) when the workpiece moves past the guard post will automatically return to the closed position.

Protection 19.1.102 saw table below 19.1.102.1 sawing at any depth and the blade tilt angle, shall not be possible to touch the moving parts under the table plate.

19.1.102.2 shield should be easy and safe to dust and chip.

By IEC 61032:1997 type B probe to verify compliance with the requirements of 19.1.102.1 and 19.1.102.2.

When the guard is in a normal position and a closed position, when the test finger shall not touch the saw moving parts work.

20 Mechanical strength

GB 13960.1-2008 this chapter apply.

21 Structure

In addition to the following provisions, GB 13960.1-2008 this chapter apply.

21.18 Review.

Power switch or controller actuator should not be affected by the regulation of the table or the workpiece, the contact switch or controller stage should not be Regulation or restriction of the workpiece.

By (100 ± 1) mm diameter sphere is applied onto the switch test. Sphere tool should not be started.

21.20 Addition.

Voltage recovery after power failure, circular saws should not automatically start.

21.107 circular saw should have integrally formed with wood chips, dust and debris adsorption device, or should be able to install additional wood chips, dust and debris Adsorbing components of the device chip.

22 Internal wiring

GB 13960.1-2008 this chapter apply.

23 Components

GB 13960.1-2008 this chapter apply.

24 Power connection and extension cord

GB 13960.1-2008 this chapter apply.

25 Terminal, external conductors

GB 13960.1-2008 this chapter apply.

26 Grounding device

GB 13960.1-2008 this chapter apply.

27 and screw coupling GB 13960.1-2008 this chapter apply.

28 Creepage distances, clearances and distances through insulation

GB 13960.1-2008 this chapter apply.

29 Heat resistance, flame resistance and electrical resistance to tracking

GB 13960.1-2008 this chapter apply.

30 Rust

GB 13960.1-2008 this chapter apply.

31 Radiation, toxicity and similar hazards

GB 13960.1-2008 This chapter does not apply.

101 riving knife position Millimeters Saw table size Saw the largest diameter (D) D<=100a 100 200 L>= 300 500 5D/2 I>= 200 335 400 Rao >= 150 250 5D/2 Chou >= 75 110 5D/2 sawing a maximum depth of 15mm.

102 Saw table size

103 saw table size slots appendix Appendices GB 13960.1 are applicable.